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freebsd-skq/sys/cam/cam_xpt.c

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CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* Implementation of the Common Access Method Transport (XPT) layer.
*
Add support for wildcard device entries in the EDT. The target mode 'Black Hole' device uses this feature to schedule itself against any target or lun attached to a controller that receives an unwanted request from an initiator instead of having an instance per potential target/lun request. Use the wildcard entries to simplify wildcard async callback storage. Don't announce devices twice to peripheral drivers. The devices will be announced as soon as the AC_PATH_REGISTERED event is registered by the peripheral driver, so no manaul push of this event is required. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1999-01-14 06:03:59 +00:00
* Copyright (c) 1997, 1998, 1999 Justin T. Gibbs.
Generalize the quirk entry for the Conner CFP* drives. It did just cover the CFP2107, but it appears (not surprisingly) that the 1 gig and 4 gig versions of that drive have the same problem with tagged queueing. Also, fix the problem reported in PR kern/9482. The XPT_DEV_MATCH case in xptioctl() wasn't putting a proper path in the CCB before it called xpt_action(). When CAMDEBUG is defined, and CAM_DEBUG_TRACE debugging is turned on, the CAM_DEBUG statement at the beginning of xpt_action would end up deferencing a NULL path pointer. That of course caused a panic. My solution is to just stick the xpt peripheral's path in the CCB. PR: kern/9482 Reviewed by: gibbs
1999-01-19 01:02:47 +00:00
* Copyright (c) 1997, 1998, 1999 Kenneth D. Merry.
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification, immediately at the beginning of the file.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
* $Id: cam_xpt.c,v 1.66 1999/08/16 17:47:39 mjacob Exp $
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/types.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <sys/kernel.h>
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
#include <sys/time.h>
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
#include <sys/conf.h>
#include <sys/fcntl.h>
#include <sys/md5.h>
#include <sys/devicestat.h>
a more correct change that should meet the sniff test
1998-12-24 06:01:15 +00:00
#include <sys/interrupt.h>
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
#ifdef PC98
#include <pc98/pc98/pc98_machdep.h> /* geometry translation */
#endif
#include <machine/clock.h>
#include <machine/ipl.h>
#include <cam/cam.h>
#include <cam/cam_conf.h>
#include <cam/cam_ccb.h>
#include <cam/cam_periph.h>
#include <cam/cam_sim.h>
#include <cam/cam_xpt.h>
#include <cam/cam_xpt_sim.h>
#include <cam/cam_xpt_periph.h>
#include <cam/cam_debug.h>
#include <cam/scsi/scsi_all.h>
#include <cam/scsi/scsi_message.h>
#include <cam/scsi/scsi_pass.h>
#include "opt_cam.h"
/* Datastructures internal to the xpt layer */
/*
* Definition of an async handler callback block. These are used to add
* SIMs and peripherals to the async callback lists.
*/
struct async_node {
SLIST_ENTRY(async_node) links;
u_int32_t event_enable; /* Async Event enables */
void (*callback)(void *arg, u_int32_t code,
struct cam_path *path, void *args);
void *callback_arg;
};
SLIST_HEAD(async_list, async_node);
SLIST_HEAD(periph_list, cam_periph);
Staticize. Reviewed by: gibbs
1998-12-22 20:05:23 +00:00
static STAILQ_HEAD(highpowerlist, ccb_hdr) highpowerq;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* This is the maximum number of high powered commands (e.g. start unit)
* that can be outstanding at a particular time.
*/
#ifndef CAM_MAX_HIGHPOWER
#define CAM_MAX_HIGHPOWER 4
#endif
/* number of high powered commands that can go through right now */
static int num_highpower = CAM_MAX_HIGHPOWER;
/*
* Structure for queueing a device in a run queue.
* There is one run queue for allocating new ccbs,
* and another for sending ccbs to the controller.
*/
struct cam_ed_qinfo {
cam_pinfo pinfo;
struct cam_ed *device;
};
/*
* The CAM EDT (Existing Device Table) contains the device information for
* all devices for all busses in the system. The table contains a
* cam_ed structure for each device on the bus.
*/
struct cam_ed {
TAILQ_ENTRY(cam_ed) links;
struct cam_ed_qinfo alloc_ccb_entry;
struct cam_ed_qinfo send_ccb_entry;
struct cam_et *target;
lun_id_t lun_id;
struct camq drvq; /*
* Queue of type drivers wanting to do
* work on this device.
*/
struct cam_ccbq ccbq; /* Queue of pending ccbs */
struct async_list asyncs; /* Async callback info for this B/T/L */
struct periph_list periphs; /* All attached devices */
u_int generation; /* Generation number */
struct cam_periph *owner; /* Peripheral driver's ownership tag */
struct xpt_quirk_entry *quirk; /* Oddities about this device */
/* Storage for the inquiry data */
struct scsi_inquiry_data inq_data;
u_int8_t inq_flags; /*
* Current settings for inquiry flags.
* This allows us to override settings
* like disconnection and tagged
* queuing for a device.
*/
u_int8_t queue_flags; /* Queue flags from the control page */
u_int8_t *serial_num;
u_int8_t serial_num_len;
u_int32_t qfrozen_cnt;
u_int32_t flags;
#define CAM_DEV_UNCONFIGURED 0x01
#define CAM_DEV_REL_TIMEOUT_PENDING 0x02
#define CAM_DEV_REL_ON_COMPLETE 0x04
#define CAM_DEV_REL_ON_QUEUE_EMPTY 0x08
#define CAM_DEV_RESIZE_QUEUE_NEEDED 0x10
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
#define CAM_DEV_TAG_AFTER_COUNT 0x20
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
#define CAM_DEV_INQUIRY_DATA_VALID 0x40
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
u_int32_t tag_delay_count;
#define CAM_TAG_DELAY_COUNT 5
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
u_int32_t refcount;
struct callout_handle c_handle;
};
/*
* Each target is represented by an ET (Existing Target). These
* entries are created when a target is successfully probed with an
* identify, and removed when a device fails to respond after a number
* of retries, or a bus rescan finds the device missing.
*/
struct cam_et {
TAILQ_HEAD(, cam_ed) ed_entries;
TAILQ_ENTRY(cam_et) links;
struct cam_eb *bus;
target_id_t target_id;
u_int32_t refcount;
u_int generation;
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
struct timeval last_reset;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
};
/*
* Each bus is represented by an EB (Existing Bus). These entries
* are created by calls to xpt_bus_register and deleted by calls to
* xpt_bus_deregister.
*/
struct cam_eb {
TAILQ_HEAD(, cam_et) et_entries;
TAILQ_ENTRY(cam_eb) links;
path_id_t path_id;
struct cam_sim *sim;
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
struct timeval last_reset;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
u_int32_t flags;
#define CAM_EB_RUNQ_SCHEDULED 0x01
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
u_int32_t refcount;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
u_int generation;
};
struct cam_path {
struct cam_periph *periph;
struct cam_eb *bus;
struct cam_et *target;
struct cam_ed *device;
};
struct xpt_quirk_entry {
struct scsi_inquiry_pattern inq_pat;
u_int8_t quirks;
#define CAM_QUIRK_NOLUNS 0x01
#define CAM_QUIRK_NOSERIAL 0x02
Put in a limit (8) for lun width- do not exceed probing this unless a device is quirked for allowing it. This will allow SCSI cards to specify their true correct lun width (32 for Qlogic SCSI, 16 or 65536 for Qlogic Fibre Channel) without crippling the system because of f/w breakage of a lot of drives. Reviewed by: gibbs@freebsd.org
1999-08-16 17:47:39 +00:00
#define CAM_QUIRK_HILUNS 0x04
Add a number of interrelated CAM feature enhancements and bug fixes. NOTE: These changes will require recompilation of any userland applications, like cdrecord, xmcd, etc., that use the CAM passthrough interface. A make world is recommended. camcontrol.[c8]: - We now support two new commands, "tags" and "negotiate". - The tags commands allows users to view the number of tagged openings for a device as well as a number of other related parameters, and it allows users to set tagged openings for a device. - The negotiate command allows users to enable and disable disconnection and tagged queueing, set sync rates, offsets and bus width. Note that not all of those features are available for all controllers. Only the adv, ahc, and ncr drivers fully support all of the features at this point. Some cards do not allow the setting of sync rates, offsets and the like, and some of the drivers don't have any facilities to do so. Some drivers, like the adw driver, only support enabling or disabling sync negotiation, but do not support setting sync rates. - new description in the camcontrol man page of how to format a disk - cleanup of the camcontrol inquiry command - add support in the 'devlist' command for skipping unconfigured devices if -v was not specified on the command line. - make use of the new base_transfer_speed in the path inquiry CCB. - fix CCB bzero cases cam_xpt.c, cam_sim.[ch], cam_ccb.h: - new flags on many CCB function codes to designate whether they're non-immediate, use a user-supplied CCB, and can only be passed from userland programs via the xpt device. Use these flags in the transport layer and pass driver to categorize CCBs. - new flag in the transport layer device matching code for device nodes that indicates whether a device is unconfigured - bump the CAM version from 0x10 to 0x11 - Change the CAM ioctls to use the version as their group code, so we can force users to recompile code even when the CCB size doesn't change. - add + fill in a new value in the path inquiry CCB, base_transfer_speed. Remove a corresponding field from the cam_sim structure, and add code to every SIM to set this field to the proper value. - Fix the set transfer settings code in the transport layer. scsi_cd.c: - make some variables volatile instead of just casting them in various places - fix a race condition in the changer code - attach unless we get a "logical unit not supported" error. This should fix all of the cases where people have devices that return weird errors when they don't have media in the drive. scsi_da.c: - attach unless we get a "logical unit not supported" error scsi_pass.c: - for immediate CCBs, just malloc a CCB to send the user request in. This gets rid of the 'held' count problem in camcontrol tags. scsi_pass.h: - change the CAM ioctls to use the CAM version as their group code. adv driver: - Allow changing the sync rate and offset separately. adw driver - Allow changing the sync rate and offset separately. aha driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. ahc driver: - Allow setting offset and sync rate separately bt driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. NCR driver: - Fix the ultra/ultra 2 negotiation bug - allow setting both the sync rate and offset separately Other HBA drivers: - Put code in to set the base_transfer_speed field for XPT_GET_TRAN_SETTINGS CCBs. Reviewed by: gibbs, mjacob (isp), imp (aha)
1999-05-06 20:16:39 +00:00
u_int mintags;
u_int maxtags;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
};
Put in a limit (8) for lun width- do not exceed probing this unless a device is quirked for allowing it. This will allow SCSI cards to specify their true correct lun width (32 for Qlogic SCSI, 16 or 65536 for Qlogic Fibre Channel) without crippling the system because of f/w breakage of a lot of drives. Reviewed by: gibbs@freebsd.org
1999-08-16 17:47:39 +00:00
#define CAM_SCSI2_MAXLUN 8
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
typedef enum {
XPT_FLAG_OPEN = 0x01
} xpt_flags;
struct xpt_softc {
xpt_flags flags;
u_int32_t generation;
#ifdef DEVFS
void *xpt_devfs_token;
void *ctl_devfs_token;
#endif
};
static const char quantum[] = "QUANTUM";
Add several quirks: Western Digital Enterprise drives have sorry performance (1.5MB/sec versus 8MB/sec) when doing tagged queueing. Disable tagged queueing for them. Submitted by: Andrew Gallatin <gallatin@cs.duke.edu> Some Sony CDROM drives don't like it when we probe more than one LUN. Verified by: Jean-Marc Zucconi <jmz@FreeBSD.ORG> Some Sony CD-R's don't like multi-LUN probing either. Submitted by: Parag Patel <parag@cgt.com>
1998-09-22 20:41:12 +00:00
static const char sony[] = "SONY";
static const char west_digital[] = "WDIGTL";
The Samsung WN34324U is broken for tagged queueing. PR: kern/9535 Submitted by: NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
1999-01-19 16:59:36 +00:00
static const char samsung[] = "SAMSUNG";
Add a quirk entry for the Seagate Medalist Pro 6 gig drive. It seems this drive has very poor write performance (1.4MB/sec vs. 12MB/sec) with anything more than two oustanding transactions. So, this limits the number of tagged commands to two for that drive. Thanks to Paul van der Zwan for doing a whole lot of testing to confirm this. Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
1999-02-26 18:38:06 +00:00
static const char seagate[] = "SEAGATE";
disable tag queing for the MICROP 4421-07 drive. It's an old 2gig drive. convert MICROP to a static string
1999-07-11 06:10:47 +00:00
static const char microp[] = "MICROP";
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static struct xpt_quirk_entry xpt_quirk_table[] =
{
{
/* Reports QUEUE FULL for temporary resource shortages */
Change the Atlas II quirk entries so they work with differential Atlas II's. Also, add a quirk entry for the 2 gig Atlas II. Partially Submitted by: Ted Buswell <tbuswell@mediaone.net>
1998-09-18 19:55:34 +00:00
{ T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP39100*", "*" },
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*quirks*/0, /*mintags*/24, /*maxtags*/32
},
{
/* Reports QUEUE FULL for temporary resource shortages */
Change the Atlas II quirk entries so they work with differential Atlas II's. Also, add a quirk entry for the 2 gig Atlas II. Partially Submitted by: Ted Buswell <tbuswell@mediaone.net>
1998-09-18 19:55:34 +00:00
{ T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP34550*", "*" },
/*quirks*/0, /*mintags*/24, /*maxtags*/32
},
{
/* Reports QUEUE FULL for temporary resource shortages */
{ T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP32275*", "*" },
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*quirks*/0, /*mintags*/24, /*maxtags*/32
},
disable tag queing for the MICROP 4421-07 drive. It's an old 2gig drive. convert MICROP to a static string
1999-07-11 06:10:47 +00:00
{
/* Broken tagged queuing drive */
{ T_DIRECT, SIP_MEDIA_FIXED, microp, "4421-07*", "*" },
/*quirks*/0, /*mintags*/0, /*maxtags*/0
},
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
{
/* Broken tagged queuing drive */
{ T_DIRECT, SIP_MEDIA_FIXED, "HP", "C372*", "*" },
/*quirks*/0, /*mintags*/0, /*maxtags*/0
},
{
/* Broken tagged queuing drive */
disable tag queing for the MICROP 4421-07 drive. It's an old 2gig drive. convert MICROP to a static string
1999-07-11 06:10:47 +00:00
{ T_DIRECT, SIP_MEDIA_FIXED, microp, "3391*", "x43h" },
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*quirks*/0, /*mintags*/0, /*maxtags*/0
},
The Quantum Atlas III evidently has an identical problem to the Atlas II. It keeps returning queue full until we have reduced the number of tagged openings to the minimum. So, put in a quirk entry with the same work-around. This quirk entry is only for the 9G Atlas III, once someone comes up with inquiry information for the 18G version of that drive, we can quirk it as well. Submitted by: "Johan Granlund" <johan@granlund.nu>
1999-01-07 01:11:24 +00:00
{
/*
* Unfortunately, the Quantum Atlas III has the same
* problem as the Atlas II drives above.
* Reported by: "Johan Granlund" <johan@granlund.nu>
*
* For future reference, the drive with the problem was:
* QUANTUM QM39100TD-SW N1B0
*
* It's possible that Quantum will fix the problem in later
* firmware revisions. If that happens, the quirk entry
* will need to be made specific to the firmware revisions
* with the problem.
*
*/
/* Reports QUEUE FULL for temporary resource shortages */
{ T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM39100*", "*" },
/*quirks*/0, /*mintags*/24, /*maxtags*/32
},
Fix sync rate and transfer rate printouts in xpt_announce_periph(). Sync rates like 4.032MHz were getting printed as 4.32MHz. Also, add a quirk entry for the 18G Quantum Atlas III. Like most other recent Quantum drives, it bogusly reports queue full. Thanks to Andre Albsmeier <andre.albsmeier@mchp.siemens.de> for the Atlas III inquiry information. Reviewed by: gibbs
1999-02-18 18:08:39 +00:00
{
/*
* 18 Gig Atlas III, same problem as the 9G version.
* Reported by: Andre Albsmeier
* <andre.albsmeier@mchp.siemens.de>
*
* For future reference, the drive with the problem was:
* QUANTUM QM318000TD-S N491
*/
/* Reports QUEUE FULL for temporary resource shortages */
{ T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM318000*", "*" },
/*quirks*/0, /*mintags*/24, /*maxtags*/32
},
Disable tagged queueing for the Seagate Elite 9GB drives. They tend to get hung up when you send tags to them too quickly. (CAM is able to recover from the problem, but this just avoids it altogether.) Reviewed by: gibbs Reported by: Bret Ford <bford@uop.cs.uop.edu> and: Martin Renters <martin@tdc.on.ca>
1998-10-14 21:17:39 +00:00
{
/*
* Broken tagged queuing drive
* Reported by: Bret Ford <bford@uop.cs.uop.edu>
* and: Martin Renters <martin@tdc.on.ca>
*/
Add a quirk entry for the Seagate Medalist Pro 6 gig drive. It seems this drive has very poor write performance (1.4MB/sec vs. 12MB/sec) with anything more than two oustanding transactions. So, this limits the number of tagged commands to two for that drive. Thanks to Paul van der Zwan for doing a whole lot of testing to confirm this. Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
1999-02-26 18:38:06 +00:00
{ T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST410800*", "71*" },
Disable tagged queueing for the Seagate Elite 9GB drives. They tend to get hung up when you send tags to them too quickly. (CAM is able to recover from the problem, but this just avoids it altogether.) Reviewed by: gibbs Reported by: Bret Ford <bford@uop.cs.uop.edu> and: Martin Renters <martin@tdc.on.ca>
1998-10-14 21:17:39 +00:00
/*quirks*/0, /*mintags*/0, /*maxtags*/0
},
Add a quirk entry for the Seagate Medalist Pro 6 gig drive. It seems this drive has very poor write performance (1.4MB/sec vs. 12MB/sec) with anything more than two oustanding transactions. So, this limits the number of tagged commands to two for that drive. Thanks to Paul van der Zwan for doing a whole lot of testing to confirm this. Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
1999-02-26 18:38:06 +00:00
/*
The 4 gig version of the Seagate Medalist Pro seems to have the same trouble with tagged queueing as the 6.5 gig version. So, I've added a quirk entry for it to limit it to two outstanding transactions at a time, just like the 6.5G version. While I'm at it, add a quirk for the 9G version of the drive, since it most likely has the same problem. Submitted by: Jeremy Lea <reg@shale.csir.co.za>
1999-03-07 22:48:50 +00:00
* The Seagate Medalist Pro drives have very poor write
* performance with anything more than 2 tags.
*
Add a quirk entry for the Seagate Medalist Pro 6 gig drive. It seems this drive has very poor write performance (1.4MB/sec vs. 12MB/sec) with anything more than two oustanding transactions. So, this limits the number of tagged commands to two for that drive. Thanks to Paul van der Zwan for doing a whole lot of testing to confirm this. Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
1999-02-26 18:38:06 +00:00
* Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
* Drive: <SEAGATE ST36530N 1444>
The 4 gig version of the Seagate Medalist Pro seems to have the same trouble with tagged queueing as the 6.5 gig version. So, I've added a quirk entry for it to limit it to two outstanding transactions at a time, just like the 6.5G version. While I'm at it, add a quirk for the 9G version of the drive, since it most likely has the same problem. Submitted by: Jeremy Lea <reg@shale.csir.co.za>
1999-03-07 22:48:50 +00:00
*
* Reported by: Jeremy Lea <reg@shale.csir.co.za>
* Drive: <SEAGATE ST34520W 1281>
*
* No one has actually reported that the 9G version
* (ST39140*) of the Medalist Pro has the same problem, but
* we're assuming that it does because the 4G and 6.5G
* versions of the drive are broken.
Add a quirk entry for the Seagate Medalist Pro 6 gig drive. It seems this drive has very poor write performance (1.4MB/sec vs. 12MB/sec) with anything more than two oustanding transactions. So, this limits the number of tagged commands to two for that drive. Thanks to Paul van der Zwan for doing a whole lot of testing to confirm this. Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
1999-02-26 18:38:06 +00:00
*/
The 4 gig version of the Seagate Medalist Pro seems to have the same trouble with tagged queueing as the 6.5 gig version. So, I've added a quirk entry for it to limit it to two outstanding transactions at a time, just like the 6.5G version. While I'm at it, add a quirk for the 9G version of the drive, since it most likely has the same problem. Submitted by: Jeremy Lea <reg@shale.csir.co.za>
1999-03-07 22:48:50 +00:00
{
{ T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST34520*", "*"},
/*quirks*/0, /*mintags*/2, /*maxtags*/2
},
{
Add a quirk entry for the Seagate Medalist Pro 6 gig drive. It seems this drive has very poor write performance (1.4MB/sec vs. 12MB/sec) with anything more than two oustanding transactions. So, this limits the number of tagged commands to two for that drive. Thanks to Paul van der Zwan for doing a whole lot of testing to confirm this. Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
1999-02-26 18:38:06 +00:00
{ T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST36530*", "*"},
/*quirks*/0, /*mintags*/2, /*maxtags*/2
},
The 4 gig version of the Seagate Medalist Pro seems to have the same trouble with tagged queueing as the 6.5 gig version. So, I've added a quirk entry for it to limit it to two outstanding transactions at a time, just like the 6.5G version. While I'm at it, add a quirk for the 9G version of the drive, since it most likely has the same problem. Submitted by: Jeremy Lea <reg@shale.csir.co.za>
1999-03-07 22:48:50 +00:00
{
{ T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"},
/*quirks*/0, /*mintags*/2, /*maxtags*/2
},
Disable tagged queueing for the IBM DCAS drives. These drives have poor write performance when tagged queueing is enabled. Although the PR was submitted for the 4 gig version of this drive, the assumption is that the 2 gig version has the same problem. Therefore tagged queueing is disabled for both. Also, update the comment for the Western Digital Enterprise drives to note that the best performance for those drives is achieved when tagged queueing is disabled and write caching is enabled. PR: kern/10398 Submitted by: Hideaki Okada <hokada@isl.melco.co.jp>
1999-03-14 05:15:38 +00:00
{
/*
* Slow when tagged queueing is enabled. Write performance
* steadily drops off with more and more concurrent
* transactions. Best sequential write performance with
* tagged queueing turned off and write caching turned on.
*
* PR: kern/10398
* Submitted by: Hideaki Okada <hokada@isl.melco.co.jp>
* Drive: DCAS-34330 w/ "S65A" firmware.
*
* The drive with the problem had the "S65A" firmware
* revision, and has also been reported (by Stephen J.
* Roznowski <sjr@home.net>) for a drive with the "S61A"
* firmware revision.
*
* Although no one has reported problems with the 2 gig
* version of the DCAS drive, the assumption is that it
* has the same problems as the 4 gig version. Therefore
* this quirk entries disables tagged queueing for all
* DCAS drives.
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "IBM", "DCAS*", "*" },
/*quirks*/0, /*mintags*/0, /*maxtags*/0
},
Add a quirk entry for the Seagate Medalist Pro 6 gig drive. It seems this drive has very poor write performance (1.4MB/sec vs. 12MB/sec) with anything more than two oustanding transactions. So, this limits the number of tagged commands to two for that drive. Thanks to Paul van der Zwan for doing a whole lot of testing to confirm this. Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
1999-02-26 18:38:06 +00:00
{
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/* Broken tagged queuing drive */
Add a quirk entry for the Seagate Medalist Pro 6 gig drive. It seems this drive has very poor write performance (1.4MB/sec vs. 12MB/sec) with anything more than two oustanding transactions. So, this limits the number of tagged commands to two for that drive. Thanks to Paul van der Zwan for doing a whole lot of testing to confirm this. Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
1999-02-26 18:38:06 +00:00
{ T_DIRECT, SIP_MEDIA_REMOVABLE, "iomega", "jaz*", "*" },
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*quirks*/0, /*mintags*/0, /*maxtags*/0
Add several quirks: Western Digital Enterprise drives have sorry performance (1.5MB/sec versus 8MB/sec) when doing tagged queueing. Disable tagged queueing for them. Submitted by: Andrew Gallatin <gallatin@cs.duke.edu> Some Sony CDROM drives don't like it when we probe more than one LUN. Verified by: Jean-Marc Zucconi <jmz@FreeBSD.ORG> Some Sony CD-R's don't like multi-LUN probing either. Submitted by: Parag Patel <parag@cgt.com>
1998-09-22 20:41:12 +00:00
},
Add a quirk entry for the CFP2107, another drive with broken tagged queuing support. Ensure that we report that a device supports tagged queuing even if the system is waiting a "command count delay" before starting to use them. If a user disables disconnects on a device ensure that tagged queuing is also turned off. We did the right thing during initial configuration, but could be confused by manual changes.
1998-10-07 03:25:21 +00:00
{
/* Broken tagged queuing drive */
By popular demand, back out the CONNER CFP* quirk entry, and return it to its original form. (Originally, it only applied to the CFP 2107.) Hopefully we can come to some conclusion about which Conner drives are broken for tagged queueing.
1999-01-20 01:13:20 +00:00
{ T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CFP2107*", "*" },
Add a quirk entry for the CFP2107, another drive with broken tagged queuing support. Ensure that we report that a device supports tagged queuing even if the system is waiting a "command count delay" before starting to use them. If a user disables disconnects on a device ensure that tagged queuing is also turned off. We did the right thing during initial configuration, but could be confused by manual changes.
1998-10-07 03:25:21 +00:00
/*quirks*/0, /*mintags*/0, /*maxtags*/0
},
The Samsung WN34324U is broken for tagged queueing. PR: kern/9535 Submitted by: NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
1999-01-19 16:59:36 +00:00
{
/*
* Broken tagged queuing drive.
* Submitted by:
* NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
* in PR kern/9535
*/
{ T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN34324U*", "*" },
/*quirks*/0, /*mintags*/0, /*maxtags*/0
},
Add several quirks: Western Digital Enterprise drives have sorry performance (1.5MB/sec versus 8MB/sec) when doing tagged queueing. Disable tagged queueing for them. Submitted by: Andrew Gallatin <gallatin@cs.duke.edu> Some Sony CDROM drives don't like it when we probe more than one LUN. Verified by: Jean-Marc Zucconi <jmz@FreeBSD.ORG> Some Sony CD-R's don't like multi-LUN probing either. Submitted by: Parag Patel <parag@cgt.com>
1998-09-22 20:41:12 +00:00
{
/*
* Slow when tagged queueing is enabled. (1.5MB/sec versus
* 8MB/sec.)
* Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
Disable tagged queueing for the IBM DCAS drives. These drives have poor write performance when tagged queueing is enabled. Although the PR was submitted for the 4 gig version of this drive, the assumption is that the 2 gig version has the same problem. Therefore tagged queueing is disabled for both. Also, update the comment for the Western Digital Enterprise drives to note that the best performance for those drives is achieved when tagged queueing is disabled and write caching is enabled. PR: kern/10398 Submitted by: Hideaki Okada <hokada@isl.melco.co.jp>
1999-03-14 05:15:38 +00:00
* Best performance with these drives is achieved with
* tagged queueing turned off, and write caching turned on.
Add several quirks: Western Digital Enterprise drives have sorry performance (1.5MB/sec versus 8MB/sec) when doing tagged queueing. Disable tagged queueing for them. Submitted by: Andrew Gallatin <gallatin@cs.duke.edu> Some Sony CDROM drives don't like it when we probe more than one LUN. Verified by: Jean-Marc Zucconi <jmz@FreeBSD.ORG> Some Sony CD-R's don't like multi-LUN probing either. Submitted by: Parag Patel <parag@cgt.com>
1998-09-22 20:41:12 +00:00
*/
{ T_DIRECT, SIP_MEDIA_FIXED, west_digital, "WDE*", "*" },
/*quirks*/0, /*mintags*/0, /*maxtags*/0
},
{
/*
* Slow when tagged queueing is enabled. (1.5MB/sec versus
* 8MB/sec.)
* Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
Disable tagged queueing for the IBM DCAS drives. These drives have poor write performance when tagged queueing is enabled. Although the PR was submitted for the 4 gig version of this drive, the assumption is that the 2 gig version has the same problem. Therefore tagged queueing is disabled for both. Also, update the comment for the Western Digital Enterprise drives to note that the best performance for those drives is achieved when tagged queueing is disabled and write caching is enabled. PR: kern/10398 Submitted by: Hideaki Okada <hokada@isl.melco.co.jp>
1999-03-14 05:15:38 +00:00
* Best performance with these drives is achieved with
* tagged queueing turned off, and write caching turned on.
Add several quirks: Western Digital Enterprise drives have sorry performance (1.5MB/sec versus 8MB/sec) when doing tagged queueing. Disable tagged queueing for them. Submitted by: Andrew Gallatin <gallatin@cs.duke.edu> Some Sony CDROM drives don't like it when we probe more than one LUN. Verified by: Jean-Marc Zucconi <jmz@FreeBSD.ORG> Some Sony CD-R's don't like multi-LUN probing either. Submitted by: Parag Patel <parag@cgt.com>
1998-09-22 20:41:12 +00:00
*/
{ T_DIRECT, SIP_MEDIA_FIXED, west_digital, "ENTERPRISE", "*" },
/*quirks*/0, /*mintags*/0, /*maxtags*/0
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
},
cam_xpt.c: Add quirk entry for a Samsung drive that doesn't like experiencing the queue full condition. Bump the timeouts for all probe activities to 60s. We don't know what the seletion timeout (or equivelent on other mediums) is for controllers, which can make the transactions at the tail end of a parallel probe take a while to complete. The DPT seems to be a card that takes a long time to see a selection timeout. cam_periph.c: Don't call a device "gone" after a single selection timeout. We need to come up with a better policy. Until that time, you'll have to manually re-scan a bus via camcontrol for the system to decide that a device is really gone. This should give devices experiencing temporary insanity to escape death.
1998-09-20 07:14:36 +00:00
{
/*
* Doesn't handle queue full condition correctly,
* so we need to limit maxtags to what the device
* can handle instead of determining this automatically.
*/
The Samsung WN34324U is broken for tagged queueing. PR: kern/9535 Submitted by: NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
1999-01-19 16:59:36 +00:00
{ T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN321010S*", "*" },
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
/*quirks*/0, /*mintags*/2, /*maxtags*/32
cam_xpt.c: Add quirk entry for a Samsung drive that doesn't like experiencing the queue full condition. Bump the timeouts for all probe activities to 60s. We don't know what the seletion timeout (or equivelent on other mediums) is for controllers, which can make the transactions at the tail end of a parallel probe take a while to complete. The DPT seems to be a card that takes a long time to see a selection timeout. cam_periph.c: Don't call a device "gone" after a single selection timeout. We need to come up with a better policy. Until that time, you'll have to manually re-scan a bus via camcontrol for the system to decide that a device is really gone. This should give devices experiencing temporary insanity to escape death.
1998-09-20 07:14:36 +00:00
},
cam.c: Clear up trailing NULs in cam_strvis. cam_xpt.c: Nuke an experimental quirk entry for the Toshiba 3401. The real problem with this device turned out to be a bug in the aic7xxx driver that was fixed months ago. Add a quirk entry to inhibit multiple lun scanning and serial number probing of DPT RAID volumes. My DPT controller hangs up solid when I do either of these things to a RAID 1 volume.
1998-09-22 04:53:23 +00:00
{
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
/* Really only one LUN */
Quirk NOLUNS cabletron device. PR: 11677 Submitted by: "Matthew N. Dodd" <winter@jurai.net>
1999-06-20 18:19:44 +00:00
{ T_ENCLOSURE, SIP_MEDIA_FIXED, "SUN", "SENA*", "*" },
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
cam.c: Clear up trailing NULs in cam_strvis. cam_xpt.c: Nuke an experimental quirk entry for the Toshiba 3401. The real problem with this device turned out to be a bug in the aic7xxx driver that was fixed months ago. Add a quirk entry to inhibit multiple lun scanning and serial number probing of DPT RAID volumes. My DPT controller hangs up solid when I do either of these things to a RAID 1 volume.
1998-09-22 04:53:23 +00:00
},
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
{
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
/* I can't believe we need a quirk for DPT volumes. */
Quirk NOLUNS cabletron device. PR: 11677 Submitted by: "Matthew N. Dodd" <winter@jurai.net>
1999-06-20 18:19:44 +00:00
{ T_ANY, SIP_MEDIA_FIXED|SIP_MEDIA_REMOVABLE, "DPT", "*", "*" },
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS,
/*mintags*/0, /*maxtags*/255
Fix a formatting error. Fix a problem reported by bde: setting SCSI_DELAY to 0 doesn't work. Now, when the user sets SCSI_DELAY to 0, we re-set it to the minimum allowable bus settle delay (100ms). Fix a potential panic in xptfinishconfigfunc() if the CCB passed in is NULL. Reported by, I think, Nicolas Souchu. Fix a memory leak in the same function (we created a path, but didn't free it) by allocating the getdev CCB and path on the stack. Reviewed by: gibbs
1998-09-17 23:58:53 +00:00
},
Add several quirks: Western Digital Enterprise drives have sorry performance (1.5MB/sec versus 8MB/sec) when doing tagged queueing. Disable tagged queueing for them. Submitted by: Andrew Gallatin <gallatin@cs.duke.edu> Some Sony CDROM drives don't like it when we probe more than one LUN. Verified by: Jean-Marc Zucconi <jmz@FreeBSD.ORG> Some Sony CD-R's don't like multi-LUN probing either. Submitted by: Parag Patel <parag@cgt.com>
1998-09-22 20:41:12 +00:00
{
/*
Generalize the quirk entry that disables multi-lun probing for Sony CDROM drives. It seems that quite a few (possibly all?) of their drives respond to inquiries on multiple luns. Hopefully we can detect problems like this in the probe phase at some point. For now, this is a pretty functional solution.
1998-11-04 19:56:24 +00:00
* Many Sony CDROM drives don't like multi-LUN probing.
Add several quirks: Western Digital Enterprise drives have sorry performance (1.5MB/sec versus 8MB/sec) when doing tagged queueing. Disable tagged queueing for them. Submitted by: Andrew Gallatin <gallatin@cs.duke.edu> Some Sony CDROM drives don't like it when we probe more than one LUN. Verified by: Jean-Marc Zucconi <jmz@FreeBSD.ORG> Some Sony CD-R's don't like multi-LUN probing either. Submitted by: Parag Patel <parag@cgt.com>
1998-09-22 20:41:12 +00:00
*/
Quirk NOLUNS cabletron device. PR: 11677 Submitted by: "Matthew N. Dodd" <winter@jurai.net>
1999-06-20 18:19:44 +00:00
{ T_CDROM, SIP_MEDIA_REMOVABLE, sony, "CD-ROM CDU*", "*" },
Add several quirks: Western Digital Enterprise drives have sorry performance (1.5MB/sec versus 8MB/sec) when doing tagged queueing. Disable tagged queueing for them. Submitted by: Andrew Gallatin <gallatin@cs.duke.edu> Some Sony CDROM drives don't like it when we probe more than one LUN. Verified by: Jean-Marc Zucconi <jmz@FreeBSD.ORG> Some Sony CD-R's don't like multi-LUN probing either. Submitted by: Parag Patel <parag@cgt.com>
1998-09-22 20:41:12 +00:00
CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
},
{
/*
* This drive doesn't like multiple LUN probing.
* Submitted by: Parag Patel <parag@cgt.com>
*/
Quirk NOLUNS cabletron device. PR: 11677 Submitted by: "Matthew N. Dodd" <winter@jurai.net>
1999-06-20 18:19:44 +00:00
{ T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R CDU9*", "*" },
Add several quirks: Western Digital Enterprise drives have sorry performance (1.5MB/sec versus 8MB/sec) when doing tagged queueing. Disable tagged queueing for them. Submitted by: Andrew Gallatin <gallatin@cs.duke.edu> Some Sony CDROM drives don't like it when we probe more than one LUN. Verified by: Jean-Marc Zucconi <jmz@FreeBSD.ORG> Some Sony CD-R's don't like multi-LUN probing either. Submitted by: Parag Patel <parag@cgt.com>
1998-09-22 20:41:12 +00:00
CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
},
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
{
Disable multi-lun probing and serial number inquiries for the Exabyte 8200.
1998-10-06 19:27:19 +00:00
/*
* The 8200 doesn't like multi-lun probing, and probably
* don't like serial number requests either.
*/
{
T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
"EXB-8200*", "*"
},
CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
},
This old firmware of the TDC3620 hangs the SCSI bus upon serial number requests. Don't ask it so.
1998-11-25 13:50:10 +00:00
{
/*
* This old revision of the TDC3600 is also SCSI-1, and
* hangs upon serial number probing.
*/
{
T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
" TDC 3600", "U07:"
},
CAM_QUIRK_NOSERIAL, /*mintags*/0, /*maxtags*/0
},
Quirk NOLUNS CALIPER CP150.
1999-05-11 02:41:00 +00:00
{
/*
* Would repond to all LUNs if asked for.
*/
{
T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "CALIPER",
"CP150", "*"
},
CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
},
Quirk this drive- all luns show up the same. Submitted by: Stephen McKay <syssgm@detir.qld.gov.au>
1999-05-11 15:44:39 +00:00
{
/*
* Would repond to all LUNs if asked for.
*/
{
T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
"96X2*", "*"
},
CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
},
Quirk NOLUNS cabletron device. PR: 11677 Submitted by: "Matthew N. Dodd" <winter@jurai.net>
1999-06-20 18:19:44 +00:00
{
/* Submitted by: Matthew Dodd <winter@jurai.net> */
{ T_PROCESSOR, SIP_MEDIA_FIXED, "Cabletrn", "EA41*", "*" },
CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
},
{
/* Submitted by: Matthew Dodd <winter@jurai.net> */
{ T_PROCESSOR, SIP_MEDIA_FIXED, "CABLETRN", "EA41*", "*" },
CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
},
Disable multi-lun probing and serial number inquiries for the Exabyte 8200.
1998-10-06 19:27:19 +00:00
{
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/* Default tagged queuing parameters for all devices */
{
T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
/*vendor*/"*", /*product*/"*", /*revision*/"*"
},
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
/*quirks*/0, /*mintags*/2, /*maxtags*/255
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
},
};
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
static const int xpt_quirk_table_size =
sizeof(xpt_quirk_table) / sizeof(*xpt_quirk_table);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
typedef enum {
DM_RET_COPY = 0x01,
DM_RET_FLAG_MASK = 0x0f,
DM_RET_NONE = 0x00,
DM_RET_STOP = 0x10,
DM_RET_DESCEND = 0x20,
DM_RET_ERROR = 0x30,
DM_RET_ACTION_MASK = 0xf0
} dev_match_ret;
typedef enum {
XPT_DEPTH_BUS,
XPT_DEPTH_TARGET,
XPT_DEPTH_DEVICE,
XPT_DEPTH_PERIPH
} xpt_traverse_depth;
struct xpt_traverse_config {
xpt_traverse_depth depth;
void *tr_func;
void *tr_arg;
};
typedef int xpt_busfunc_t (struct cam_eb *bus, void *arg);
typedef int xpt_targetfunc_t (struct cam_et *target, void *arg);
typedef int xpt_devicefunc_t (struct cam_ed *device, void *arg);
typedef int xpt_periphfunc_t (struct cam_periph *periph, void *arg);
typedef int xpt_pdrvfunc_t (struct periph_driver **pdrv, void *arg);
/* Transport layer configuration information */
static struct xpt_softc xsoftc;
/* Queues for our software interrupt handler */
typedef TAILQ_HEAD(cam_isrq, ccb_hdr) cam_isrq_t;
static cam_isrq_t cam_bioq;
static cam_isrq_t cam_netq;
/* "Pool" of inactive ccbs managed by xpt_alloc_ccb and xpt_free_ccb */
Staticize. Reviewed by: gibbs
1998-12-22 20:05:23 +00:00
static SLIST_HEAD(,ccb_hdr) ccb_freeq;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static u_int xpt_max_ccbs; /*
* Maximum size of ccb pool. Modified as
* devices are added/removed or have their
* opening counts changed.
*/
static u_int xpt_ccb_count; /* Current count of allocated ccbs */
static struct cam_periph *xpt_periph;
static periph_init_t xpt_periph_init;
static periph_init_t probe_periph_init;
static struct periph_driver xpt_driver =
{
xpt_periph_init, "xpt",
TAILQ_HEAD_INITIALIZER(xpt_driver.units)
};
static struct periph_driver probe_driver =
{
probe_periph_init, "probe",
TAILQ_HEAD_INITIALIZER(probe_driver.units)
};
DATA_SET(periphdriver_set, xpt_driver);
DATA_SET(periphdriver_set, probe_driver);
#define XPT_CDEV_MAJOR 104
static d_open_t xptopen;
static d_close_t xptclose;
static d_ioctl_t xptioctl;
This commit should be a extensive NO-OP: Reformat and initialize correctly all "struct cdevsw". Initialize the d_maj and d_bmaj fields. The d_reset field was not removed, although it is never used. I used a program to do most of this, so all the files now use the same consistent format. Please keep it that way. Vinum and i4b not modified, patches emailed to respective authors.
1999-05-30 16:53:49 +00:00
static struct cdevsw xpt_cdevsw = {
/* open */ xptopen,
/* close */ xptclose,
/* read */ noread,
/* write */ nowrite,
/* ioctl */ xptioctl,
/* stop */ nostop,
/* reset */ noreset,
/* devtotty */ nodevtotty,
/* poll */ nopoll,
/* mmap */ nommap,
/* strategy */ nostrategy,
/* name */ "xpt",
/* parms */ noparms,
/* maj */ XPT_CDEV_MAJOR,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ 0,
/* maxio */ 0,
/* bmaj */ -1
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
};
static struct intr_config_hook *xpt_config_hook;
/* Registered busses */
Staticize. Reviewed by: gibbs
1998-12-22 20:05:23 +00:00
static TAILQ_HEAD(,cam_eb) xpt_busses;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static u_int bus_generation;
/* Storage for debugging datastructures */
#ifdef CAMDEBUG
struct cam_path *cam_dpath;
u_int32_t cam_dflags;
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
u_int32_t cam_debug_delay;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
#endif
#if defined(CAM_DEBUG_FLAGS) && !defined(CAMDEBUG)
#error "You must have options CAMDEBUG to use options CAM_DEBUG_FLAGS"
#endif
/*
* In order to enable the CAM_DEBUG_* options, the user must have CAMDEBUG
* enabled. Also, the user must have either none, or all of CAM_DEBUG_BUS,
* CAM_DEBUG_TARGET, and CAM_DEBUG_LUN specified.
*/
#if defined(CAM_DEBUG_BUS) || defined(CAM_DEBUG_TARGET) \
|| defined(CAM_DEBUG_LUN)
#ifdef CAMDEBUG
#if !defined(CAM_DEBUG_BUS) || !defined(CAM_DEBUG_TARGET) \
|| !defined(CAM_DEBUG_LUN)
#error "You must define all or none of CAM_DEBUG_BUS, CAM_DEBUG_TARGET \
and CAM_DEBUG_LUN"
#endif /* !CAM_DEBUG_BUS || !CAM_DEBUG_TARGET || !CAM_DEBUG_LUN */
#else /* !CAMDEBUG */
#error "You must use options CAMDEBUG if you use the CAM_DEBUG_* options"
#endif /* CAMDEBUG */
#endif /* CAM_DEBUG_BUS || CAM_DEBUG_TARGET || CAM_DEBUG_LUN */
Call the xpt_init() hook during at the start of the configure() process via SYSINIT(). This gets a little closer to making cam useable as a module.
1999-01-19 00:13:05 +00:00
/* Our boot-time initialization hook */
static void xpt_init(void *);
SYSINIT(cam, SI_SUB_CONFIGURE, SI_ORDER_SECOND, xpt_init, NULL);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static cam_status xpt_compile_path(struct cam_path *new_path,
struct cam_periph *perph,
path_id_t path_id,
target_id_t target_id,
lun_id_t lun_id);
static void xpt_release_path(struct cam_path *path);
static void xpt_async_bcast(struct async_list *async_head,
u_int32_t async_code,
struct cam_path *path,
void *async_arg);
static int xptnextfreebus(path_id_t startbus);
static int xptpathid(const char *sim_name, int sim_unit, int sim_bus,
path_id_t *nextpath);
static union ccb *xpt_get_ccb(struct cam_ed *device);
static int xpt_schedule_dev(struct camq *queue, cam_pinfo *dev_pinfo,
u_int32_t new_priority);
static void xpt_run_dev_allocq(struct cam_eb *bus);
static void xpt_run_dev_sendq(struct cam_eb *bus);
static timeout_t xpt_release_devq_timeout;
static timeout_t xpt_release_simq_timeout;
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
static void xpt_release_bus(struct cam_eb *bus);
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
static void xpt_release_devq_device(struct cam_ed *dev, u_int count,
int run_queue);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static struct cam_et*
xpt_alloc_target(struct cam_eb *bus, target_id_t target_id);
static void xpt_release_target(struct cam_eb *bus, struct cam_et *target);
static struct cam_ed*
xpt_alloc_device(struct cam_eb *bus, struct cam_et *target,
lun_id_t lun_id);
static void xpt_release_device(struct cam_eb *bus, struct cam_et *target,
struct cam_ed *device);
static u_int32_t xpt_dev_ccbq_resize(struct cam_path *path, int newopenings);
static struct cam_eb*
xpt_find_bus(path_id_t path_id);
static struct cam_et*
xpt_find_target(struct cam_eb *bus, target_id_t target_id);
static struct cam_ed*
xpt_find_device(struct cam_et *target, lun_id_t lun_id);
static void xpt_scan_bus(struct cam_periph *periph, union ccb *ccb);
static void xpt_scan_lun(struct cam_periph *periph,
struct cam_path *path, cam_flags flags,
union ccb *ccb);
static void xptscandone(struct cam_periph *periph, union ccb *done_ccb);
static xpt_busfunc_t xptconfigbuscountfunc;
static xpt_busfunc_t xptconfigfunc;
static void xpt_config(void *arg);
static xpt_devicefunc_t xptpassannouncefunc;
static void xpt_finishconfig(struct cam_periph *periph, union ccb *ccb);
static void xptaction(struct cam_sim *sim, union ccb *work_ccb);
a more correct change that should meet the sniff test
1998-12-24 06:01:15 +00:00
static swihand_t swi_camnet;
static swihand_t swi_cambio;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static void camisr(cam_isrq_t *queue);
#if 0
static void xptstart(struct cam_periph *periph, union ccb *work_ccb);
static void xptasync(struct cam_periph *periph,
u_int32_t code, cam_path *path);
#endif
static dev_match_ret xptbusmatch(struct dev_match_pattern *patterns,
int num_patterns, struct cam_eb *bus);
static dev_match_ret xptdevicematch(struct dev_match_pattern *patterns,
int num_patterns, struct cam_ed *device);
static dev_match_ret xptperiphmatch(struct dev_match_pattern *patterns,
int num_patterns,
struct cam_periph *periph);
static xpt_busfunc_t xptedtbusfunc;
static xpt_targetfunc_t xptedttargetfunc;
static xpt_devicefunc_t xptedtdevicefunc;
static xpt_periphfunc_t xptedtperiphfunc;
static xpt_pdrvfunc_t xptplistpdrvfunc;
static xpt_periphfunc_t xptplistperiphfunc;
static int xptedtmatch(struct ccb_dev_match *cdm);
static int xptperiphlistmatch(struct ccb_dev_match *cdm);
static int xptbustraverse(struct cam_eb *start_bus,
xpt_busfunc_t *tr_func, void *arg);
static int xpttargettraverse(struct cam_eb *bus,
struct cam_et *start_target,
xpt_targetfunc_t *tr_func, void *arg);
static int xptdevicetraverse(struct cam_et *target,
struct cam_ed *start_device,
xpt_devicefunc_t *tr_func, void *arg);
static int xptperiphtraverse(struct cam_ed *device,
struct cam_periph *start_periph,
xpt_periphfunc_t *tr_func, void *arg);
static int xptpdrvtraverse(struct periph_driver **start_pdrv,
xpt_pdrvfunc_t *tr_func, void *arg);
static int xptpdperiphtraverse(struct periph_driver **pdrv,
struct cam_periph *start_periph,
xpt_periphfunc_t *tr_func,
void *arg);
static xpt_busfunc_t xptdefbusfunc;
static xpt_targetfunc_t xptdeftargetfunc;
static xpt_devicefunc_t xptdefdevicefunc;
static xpt_periphfunc_t xptdefperiphfunc;
static int xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg);
The Conner CFP2107 is a fixed-media drive, not removable media. This fixes the quirk that disables tagged queueing for those drives. Also, silence a warning by disabling xpt_for_all_targets() and xpt_for_all_periphs(). These two functions are not currently used, but they should not be removed. They're part of a set of functions that provide a way to execute a function for every {bus,target,device,periph} in the system. If anyone needs to use either function in the future, they can be un-#ifdefed.
1999-01-05 21:37:07 +00:00
#ifdef notusedyet
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static int xpt_for_all_targets(xpt_targetfunc_t *tr_func,
void *arg);
The Conner CFP2107 is a fixed-media drive, not removable media. This fixes the quirk that disables tagged queueing for those drives. Also, silence a warning by disabling xpt_for_all_targets() and xpt_for_all_periphs(). These two functions are not currently used, but they should not be removed. They're part of a set of functions that provide a way to execute a function for every {bus,target,device,periph} in the system. If anyone needs to use either function in the future, they can be un-#ifdefed.
1999-01-05 21:37:07 +00:00
#endif
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static int xpt_for_all_devices(xpt_devicefunc_t *tr_func,
void *arg);
The Conner CFP2107 is a fixed-media drive, not removable media. This fixes the quirk that disables tagged queueing for those drives. Also, silence a warning by disabling xpt_for_all_targets() and xpt_for_all_periphs(). These two functions are not currently used, but they should not be removed. They're part of a set of functions that provide a way to execute a function for every {bus,target,device,periph} in the system. If anyone needs to use either function in the future, they can be un-#ifdefed.
1999-01-05 21:37:07 +00:00
#ifdef notusedyet
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static int xpt_for_all_periphs(xpt_periphfunc_t *tr_func,
void *arg);
The Conner CFP2107 is a fixed-media drive, not removable media. This fixes the quirk that disables tagged queueing for those drives. Also, silence a warning by disabling xpt_for_all_targets() and xpt_for_all_periphs(). These two functions are not currently used, but they should not be removed. They're part of a set of functions that provide a way to execute a function for every {bus,target,device,periph} in the system. If anyone needs to use either function in the future, they can be un-#ifdefed.
1999-01-05 21:37:07 +00:00
#endif
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static xpt_devicefunc_t xptsetasyncfunc;
static xpt_busfunc_t xptsetasyncbusfunc;
static cam_status xptregister(struct cam_periph *periph,
void *arg);
static cam_status proberegister(struct cam_periph *periph,
void *arg);
static void probeschedule(struct cam_periph *probe_periph);
static void probestart(struct cam_periph *periph, union ccb *start_ccb);
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
static void proberequestdefaultnegotiation(struct cam_periph *periph);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static void probedone(struct cam_periph *periph, union ccb *done_ccb);
static void probecleanup(struct cam_periph *periph);
static void xpt_find_quirk(struct cam_ed *device);
static void xpt_set_transfer_settings(struct ccb_trans_settings *cts,
Correct problems with xpt_set_transfer_settings and async transfer negotiation changes with wildcarded paths.
1998-09-25 22:35:56 +00:00
struct cam_ed *device,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
int async_update);
Fix a few problems with the tag delay code: - Tagged devices were limited to one transaction (oops) - We revert to untagged with a tag delay if the user changed the transfer negotiation values (via perhaps camcontrol some day). - xpt_async did not use the expanded path in some cases which could cause a panic.
1998-09-24 22:43:54 +00:00
static void xpt_toggle_tags(struct cam_path *path);
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
static void xpt_start_tags(struct cam_path *path);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static __inline int xpt_schedule_dev_allocq(struct cam_eb *bus,
struct cam_ed *dev);
static __inline int xpt_schedule_dev_sendq(struct cam_eb *bus,
struct cam_ed *dev);
static __inline int periph_is_queued(struct cam_periph *periph);
static __inline int device_is_alloc_queued(struct cam_ed *device);
static __inline int device_is_send_queued(struct cam_ed *device);
static __inline int dev_allocq_is_runnable(struct cam_devq *devq);
static __inline int
xpt_schedule_dev_allocq(struct cam_eb *bus, struct cam_ed *dev)
{
int retval;
if (dev->ccbq.devq_openings > 0) {
if ((dev->flags & CAM_DEV_RESIZE_QUEUE_NEEDED) != 0) {
cam_ccbq_resize(&dev->ccbq,
dev->ccbq.dev_openings
+ dev->ccbq.dev_active);
dev->flags &= ~CAM_DEV_RESIZE_QUEUE_NEEDED;
}
cam_periph.c: Move handling of CAM_AUTOSENSE_FAIL into block dealing with all other scsi status errors. cam_queue.c: cam_queue.h: Fix 'off by one' heap bug in a more efficient manner. Since heap algorithms like to deal with indexes started from 1, offset our heap array pointer at allocation time to make this so for a C environment. This makes the implementation of the algorithm a bit more efficient. cam_xpt.c: Use macros for accessing the head of the heap so that code is isolated from implementation details of the heap.
1999-04-19 21:26:08 +00:00
/*
* The priority of a device waiting for CCB resources
* is that of the the highest priority peripheral driver
* enqueued.
*/
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
retval = xpt_schedule_dev(&bus->sim->devq->alloc_queue,
&dev->alloc_ccb_entry.pinfo,
cam_periph.c: Move handling of CAM_AUTOSENSE_FAIL into block dealing with all other scsi status errors. cam_queue.c: cam_queue.h: Fix 'off by one' heap bug in a more efficient manner. Since heap algorithms like to deal with indexes started from 1, offset our heap array pointer at allocation time to make this so for a C environment. This makes the implementation of the algorithm a bit more efficient. cam_xpt.c: Use macros for accessing the head of the heap so that code is isolated from implementation details of the heap.
1999-04-19 21:26:08 +00:00
CAMQ_GET_HEAD(&dev->drvq)->priority);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
} else {
retval = 0;
}
return (retval);
}
static __inline int
xpt_schedule_dev_sendq(struct cam_eb *bus, struct cam_ed *dev)
{
int retval;
if (dev->ccbq.dev_openings > 0) {
cam_periph.c: Move handling of CAM_AUTOSENSE_FAIL into block dealing with all other scsi status errors. cam_queue.c: cam_queue.h: Fix 'off by one' heap bug in a more efficient manner. Since heap algorithms like to deal with indexes started from 1, offset our heap array pointer at allocation time to make this so for a C environment. This makes the implementation of the algorithm a bit more efficient. cam_xpt.c: Use macros for accessing the head of the heap so that code is isolated from implementation details of the heap.
1999-04-19 21:26:08 +00:00
/*
* The priority of a device waiting for controller
* resources is that of the the highest priority CCB
* enqueued.
*/
retval =
xpt_schedule_dev(&bus->sim->devq->send_queue,
&dev->send_ccb_entry.pinfo,
CAMQ_GET_HEAD(&dev->ccbq.queue)->priority);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
} else {
retval = 0;
}
return (retval);
}
static __inline int
periph_is_queued(struct cam_periph *periph)
{
return (periph->pinfo.index != CAM_UNQUEUED_INDEX);
}
static __inline int
device_is_alloc_queued(struct cam_ed *device)
{
return (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
}
static __inline int
device_is_send_queued(struct cam_ed *device)
{
return (device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
}
static __inline int
dev_allocq_is_runnable(struct cam_devq *devq)
{
/*
* Have work to do.
* Have space to do more work.
* Allowed to do work.
*/
return ((devq->alloc_queue.qfrozen_cnt == 0)
&& (devq->alloc_queue.entries > 0)
&& (devq->alloc_openings > 0));
}
static void
xpt_periph_init()
{
Simplify cdevsw registration. The cdevsw_add() function now finds the major number(s) in the struct cdevsw passed to it. cdevsw_add_generic() is no longer needed, cdevsw_add() does the same thing. cdevsw_add() will print an message if the d_maj field looks bogus. Remove nblkdev and nchrdev variables. Most places they were used bogusly. Instead check a dev_t for validity by seeing if devsw() or bdevsw() returns NULL. Move bdevsw() and devsw() functions to kern/kern_conf.c Bump __FreeBSD_version to 400006 This commit removes: 72 bogus makedev() calls 26 bogus SYSINIT functions if_xe.c bogusly accessed cdevsw[], author/maintainer please fix. I4b and vinum not changed. Patches emailed to authors. LINT probably broken until they catch up.
1999-05-31 11:29:30 +00:00
cdevsw_add(&xpt_cdevsw);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
static void
probe_periph_init()
{
}
static void
xptdone(struct cam_periph *periph, union ccb *done_ccb)
{
/* Caller will release the CCB */
wakeup(&done_ccb->ccb_h.cbfcnp);
}
static int
xptopen(dev_t dev, int flags, int fmt, struct proc *p)
{
int unit;
unit = minor(dev) & 0xff;
Check to make sure that this device is opened read-write, not just read only. Previously, if the device was chmoded 644, someone could open it with the O_RDONLY flag and issue any ioctl to the device. Reviewed by: imp, gibbs
1998-09-16 00:11:53 +00:00
/*
* Only allow read-write access.
*/
if (((flags & FWRITE) == 0) || ((flags & FREAD) == 0))
return(EPERM);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* We don't allow nonblocking access.
*/
if ((flags & O_NONBLOCK) != 0) {
printf("xpt%d: can't do nonblocking accesss\n", unit);
return(ENODEV);
}
/*
* We only have one transport layer right now. If someone accesses
* us via something other than minor number 1, point out their
* mistake.
*/
if (unit != 0) {
printf("xptopen: got invalid xpt unit %d\n", unit);
return(ENXIO);
}
/* Mark ourselves open */
xsoftc.flags |= XPT_FLAG_OPEN;
return(0);
}
static int
xptclose(dev_t dev, int flag, int fmt, struct proc *p)
{
int unit;
unit = minor(dev) & 0xff;
/*
* We only have one transport layer right now. If someone accesses
* us via something other than minor number 1, point out their
* mistake.
*/
if (unit != 0) {
printf("xptclose: got invalid xpt unit %d\n", unit);
return(ENXIO);
}
/* Mark ourselves closed */
xsoftc.flags &= ~XPT_FLAG_OPEN;
return(0);
}
static int
xptioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
{
int unit, error;
error = 0;
unit = minor(dev) & 0xff;
/*
* We only have one transport layer right now. If someone accesses
* us via something other than minor number 1, point out their
* mistake.
*/
if (unit != 0) {
printf("xptioctl: got invalid xpt unit %d\n", unit);
return(ENXIO);
}
switch(cmd) {
/*
* For the transport layer CAMIOCOMMAND ioctl, we really only want
* to accept CCB types that don't quite make sense to send through a
* passthrough driver.
*/
case CAMIOCOMMAND: {
union ccb *ccb;
union ccb *inccb;
inccb = (union ccb *)addr;
switch(inccb->ccb_h.func_code) {
case XPT_SCAN_BUS:
case XPT_RESET_BUS:
if ((inccb->ccb_h.target_id != CAM_TARGET_WILDCARD)
|| (inccb->ccb_h.target_lun != CAM_LUN_WILDCARD)) {
error = EINVAL;
break;
}
/* FALLTHROUGH */
case XPT_SCAN_LUN:
ccb = xpt_alloc_ccb();
/*
* Create a path using the bus, target, and lun the
* user passed in.
*/
if (xpt_create_path(&ccb->ccb_h.path, xpt_periph,
inccb->ccb_h.path_id,
inccb->ccb_h.target_id,
inccb->ccb_h.target_lun) !=
CAM_REQ_CMP){
error = EINVAL;
xpt_free_ccb(ccb);
break;
}
/* Ensure all of our fields are correct */
xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path,
inccb->ccb_h.pinfo.priority);
xpt_merge_ccb(ccb, inccb);
ccb->ccb_h.cbfcnp = xptdone;
cam_periph_runccb(ccb, NULL, 0, 0, NULL);
bcopy(ccb, inccb, sizeof(union ccb));
xpt_free_path(ccb->ccb_h.path);
xpt_free_ccb(ccb);
break;
case XPT_DEBUG: {
union ccb ccb;
/*
use CAM_DEBUG_XPT to track XPT; correct a misspelling
1998-12-06 00:06:48 +00:00
* This is an immediate CCB, so it's okay to
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
* allocate it on the stack.
*/
/*
* Create a path using the bus, target, and lun the
* user passed in.
*/
if (xpt_create_path(&ccb.ccb_h.path, xpt_periph,
inccb->ccb_h.path_id,
inccb->ccb_h.target_id,
inccb->ccb_h.target_lun) !=
CAM_REQ_CMP){
error = EINVAL;
break;
}
/* Ensure all of our fields are correct */
xpt_setup_ccb(&ccb.ccb_h, ccb.ccb_h.path,
inccb->ccb_h.pinfo.priority);
xpt_merge_ccb(&ccb, inccb);
ccb.ccb_h.cbfcnp = xptdone;
xpt_action(&ccb);
bcopy(&ccb, inccb, sizeof(union ccb));
xpt_free_path(ccb.ccb_h.path);
break;
}
case XPT_DEV_MATCH: {
struct cam_periph_map_info mapinfo;
Generalize the quirk entry for the Conner CFP* drives. It did just cover the CFP2107, but it appears (not surprisingly) that the 1 gig and 4 gig versions of that drive have the same problem with tagged queueing. Also, fix the problem reported in PR kern/9482. The XPT_DEV_MATCH case in xptioctl() wasn't putting a proper path in the CCB before it called xpt_action(). When CAMDEBUG is defined, and CAM_DEBUG_TRACE debugging is turned on, the CAM_DEBUG statement at the beginning of xpt_action would end up deferencing a NULL path pointer. That of course caused a panic. My solution is to just stick the xpt peripheral's path in the CCB. PR: kern/9482 Reviewed by: gibbs
1999-01-19 01:02:47 +00:00
struct cam_path *old_path;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* We can't deal with physical addresses for this
* type of transaction.
*/
if (inccb->ccb_h.flags & CAM_DATA_PHYS) {
error = EINVAL;
break;
}
Generalize the quirk entry for the Conner CFP* drives. It did just cover the CFP2107, but it appears (not surprisingly) that the 1 gig and 4 gig versions of that drive have the same problem with tagged queueing. Also, fix the problem reported in PR kern/9482. The XPT_DEV_MATCH case in xptioctl() wasn't putting a proper path in the CCB before it called xpt_action(). When CAMDEBUG is defined, and CAM_DEBUG_TRACE debugging is turned on, the CAM_DEBUG statement at the beginning of xpt_action would end up deferencing a NULL path pointer. That of course caused a panic. My solution is to just stick the xpt peripheral's path in the CCB. PR: kern/9482 Reviewed by: gibbs
1999-01-19 01:02:47 +00:00
/*
* Save this in case the caller had it set to
* something in particular.
*/
old_path = inccb->ccb_h.path;
/*
* We really don't need a path for the matching
* code. The path is needed because of the
* debugging statements in xpt_action(). They
* assume that the CCB has a valid path.
*/
inccb->ccb_h.path = xpt_periph->path;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
bzero(&mapinfo, sizeof(mapinfo));
/*
* Map the pattern and match buffers into kernel
* virtual address space.
*/
error = cam_periph_mapmem(inccb, &mapinfo);
Generalize the quirk entry for the Conner CFP* drives. It did just cover the CFP2107, but it appears (not surprisingly) that the 1 gig and 4 gig versions of that drive have the same problem with tagged queueing. Also, fix the problem reported in PR kern/9482. The XPT_DEV_MATCH case in xptioctl() wasn't putting a proper path in the CCB before it called xpt_action(). When CAMDEBUG is defined, and CAM_DEBUG_TRACE debugging is turned on, the CAM_DEBUG statement at the beginning of xpt_action would end up deferencing a NULL path pointer. That of course caused a panic. My solution is to just stick the xpt peripheral's path in the CCB. PR: kern/9482 Reviewed by: gibbs
1999-01-19 01:02:47 +00:00
if (error) {
inccb->ccb_h.path = old_path;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
break;
Generalize the quirk entry for the Conner CFP* drives. It did just cover the CFP2107, but it appears (not surprisingly) that the 1 gig and 4 gig versions of that drive have the same problem with tagged queueing. Also, fix the problem reported in PR kern/9482. The XPT_DEV_MATCH case in xptioctl() wasn't putting a proper path in the CCB before it called xpt_action(). When CAMDEBUG is defined, and CAM_DEBUG_TRACE debugging is turned on, the CAM_DEBUG statement at the beginning of xpt_action would end up deferencing a NULL path pointer. That of course caused a panic. My solution is to just stick the xpt peripheral's path in the CCB. PR: kern/9482 Reviewed by: gibbs
1999-01-19 01:02:47 +00:00
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* This is an immediate CCB, we can send it on directly.
*/
xpt_action(inccb);
/*
* Map the buffers back into user space.
*/
cam_periph_unmapmem(inccb, &mapinfo);
Generalize the quirk entry for the Conner CFP* drives. It did just cover the CFP2107, but it appears (not surprisingly) that the 1 gig and 4 gig versions of that drive have the same problem with tagged queueing. Also, fix the problem reported in PR kern/9482. The XPT_DEV_MATCH case in xptioctl() wasn't putting a proper path in the CCB before it called xpt_action(). When CAMDEBUG is defined, and CAM_DEBUG_TRACE debugging is turned on, the CAM_DEBUG statement at the beginning of xpt_action would end up deferencing a NULL path pointer. That of course caused a panic. My solution is to just stick the xpt peripheral's path in the CCB. PR: kern/9482 Reviewed by: gibbs
1999-01-19 01:02:47 +00:00
inccb->ccb_h.path = old_path;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
error = 0;
break;
}
default:
error = EINVAL;
break;
}
break;
}
/*
* This is the getpassthru ioctl. It takes a XPT_GDEVLIST ccb as input,
* with the periphal driver name and unit name filled in. The other
* fields don't really matter as input. The passthrough driver name
* ("pass"), and unit number are passed back in the ccb. The current
* device generation number, and the index into the device peripheral
* driver list, and the status are also passed back. Note that
* since we do everything in one pass, unlike the XPT_GDEVLIST ccb,
* we never return a status of CAM_GDEVLIST_LIST_CHANGED. It is
* (or rather should be) impossible for the device peripheral driver
* list to change since we look at the whole thing in one pass, and
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
* we do it with splcam protection.
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
*
*/
case CAMGETPASSTHRU: {
union ccb *ccb;
struct cam_periph *periph;
struct periph_driver **p_drv;
char *name;
int unit;
int cur_generation;
Add a "dummy light" (actually two dummy lights) to catch people who don't have the passthrough device configured in their kernel. This will hopefully reduce the number of people complaining that they can't get {camcontrol, xmcd, tosha, cdrecord, etc.} to work. Reviewed by: gibbs
1998-10-12 21:54:13 +00:00
int base_periph_found;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
int splbreaknum;
int s;
ccb = (union ccb *)addr;
unit = ccb->cgdl.unit_number;
name = ccb->cgdl.periph_name;
/*
* Every 100 devices, we want to drop our spl protection to
* give the software interrupt handler a chance to run.
* Most systems won't run into this check, but this should
* avoid starvation in the software interrupt handler in
* large systems.
*/
splbreaknum = 100;
ccb = (union ccb *)addr;
Add a "dummy light" (actually two dummy lights) to catch people who don't have the passthrough device configured in their kernel. This will hopefully reduce the number of people complaining that they can't get {camcontrol, xmcd, tosha, cdrecord, etc.} to work. Reviewed by: gibbs
1998-10-12 21:54:13 +00:00
base_periph_found = 0;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* Sanity check -- make sure we don't get a null peripheral
* driver name.
*/
if (*ccb->cgdl.periph_name == '\0') {
error = EINVAL;
break;
}
/* Keep the list from changing while we traverse it */
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
s = splcam();
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
ptstartover:
cur_generation = xsoftc.generation;
/* first find our driver in the list of drivers */
for (p_drv = (struct periph_driver **)periphdriver_set.ls_items;
*p_drv != NULL; p_drv++)
if (strcmp((*p_drv)->driver_name, name) == 0)
break;
if (*p_drv == NULL) {
splx(s);
ccb->ccb_h.status = CAM_REQ_CMP_ERR;
ccb->cgdl.status = CAM_GDEVLIST_ERROR;
*ccb->cgdl.periph_name = '\0';
ccb->cgdl.unit_number = 0;
error = ENOENT;
break;
}
/*
* Run through every peripheral instance of this driver
* and check to see whether it matches the unit passed
* in by the user. If it does, get out of the loops and
* find the passthrough driver associated with that
* peripheral driver.
*/
for (periph = TAILQ_FIRST(&(*p_drv)->units); periph != NULL;
periph = TAILQ_NEXT(periph, unit_links)) {
if (periph->unit_number == unit) {
break;
} else if (--splbreaknum == 0) {
splx(s);
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
s = splcam();
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
splbreaknum = 100;
if (cur_generation != xsoftc.generation)
goto ptstartover;
}
}
/*
* If we found the peripheral driver that the user passed
* in, go through all of the peripheral drivers for that
* particular device and look for a passthrough driver.
*/
if (periph != NULL) {
struct cam_ed *device;
int i;
Add a "dummy light" (actually two dummy lights) to catch people who don't have the passthrough device configured in their kernel. This will hopefully reduce the number of people complaining that they can't get {camcontrol, xmcd, tosha, cdrecord, etc.} to work. Reviewed by: gibbs
1998-10-12 21:54:13 +00:00
base_periph_found = 1;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
device = periph->path->device;
for (i = 0, periph = device->periphs.slh_first;
periph != NULL;
periph = periph->periph_links.sle_next, i++) {
/*
* Check to see whether we have a
* passthrough device or not.
*/
if (strcmp(periph->periph_name, "pass") == 0) {
/*
* Fill in the getdevlist fields.
*/
strcpy(ccb->cgdl.periph_name,
periph->periph_name);
ccb->cgdl.unit_number =
periph->unit_number;
if (periph->periph_links.sle_next)
ccb->cgdl.status =
CAM_GDEVLIST_MORE_DEVS;
else
ccb->cgdl.status =
CAM_GDEVLIST_LAST_DEVICE;
ccb->cgdl.generation =
device->generation;
ccb->cgdl.index = i;
/*
* Fill in some CCB header fields
* that the user may want.
*/
ccb->ccb_h.path_id =
periph->path->bus->path_id;
ccb->ccb_h.target_id =
periph->path->target->target_id;
ccb->ccb_h.target_lun =
periph->path->device->lun_id;
ccb->ccb_h.status = CAM_REQ_CMP;
break;
}
}
}
/*
* If the periph is null here, one of two things has
* happened. The first possibility is that we couldn't
* find the unit number of the particular peripheral driver
* that the user is asking about. e.g. the user asks for
* the passthrough driver for "da11". We find the list of
* "da" peripherals all right, but there is no unit 11.
* The other possibility is that we went through the list
* of peripheral drivers attached to the device structure,
* but didn't find one with the name "pass". Either way,
* we return ENOENT, since we couldn't find something.
*/
if (periph == NULL) {
ccb->ccb_h.status = CAM_REQ_CMP_ERR;
ccb->cgdl.status = CAM_GDEVLIST_ERROR;
*ccb->cgdl.periph_name = '\0';
ccb->cgdl.unit_number = 0;
error = ENOENT;
Add a "dummy light" (actually two dummy lights) to catch people who don't have the passthrough device configured in their kernel. This will hopefully reduce the number of people complaining that they can't get {camcontrol, xmcd, tosha, cdrecord, etc.} to work. Reviewed by: gibbs
1998-10-12 21:54:13 +00:00
/*
* It is unfortunate that this is even necessary,
* but there are many, many clueless users out there.
* If this is true, the user is looking for the
* passthrough driver, but doesn't have one in his
* kernel.
*/
if (base_periph_found == 1) {
printf("xptioctl: pass driver is not in the "
"kernel\n");
printf("xptioctl: put \"device pass0\" in "
"your kernel config file\n");
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
splx(s);
break;
}
default:
error = ENOTTY;
break;
}
return(error);
}
/* Functions accessed by the peripheral drivers */
put it back the way it was
1999-01-20 23:00:31 +00:00
static void
Call the xpt_init() hook during at the start of the configure() process via SYSINIT(). This gets a little closer to making cam useable as a module.
1999-01-19 00:13:05 +00:00
xpt_init(dummy)
void *dummy;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
{
struct cam_sim *xpt_sim;
struct cam_path *path;
struct cam_devq;
cam_status status;
TAILQ_INIT(&xpt_busses);
TAILQ_INIT(&cam_bioq);
TAILQ_INIT(&cam_netq);
SLIST_INIT(&ccb_freeq);
STAILQ_INIT(&highpowerq);
/*
* The xpt layer is, itself, the equivelent of a SIM.
* Allow 16 ccbs in the ccb pool for it. This should
* give decent parallelism when we probe busses and
* perform other XPT functions.
*/
xpt_sim = (struct cam_sim *)malloc(sizeof(*xpt_sim),
M_DEVBUF, M_WAITOK);
xpt_sim->sim_action = xptaction;
xpt_sim->sim_name = "xpt";
xpt_sim->path_id = CAM_XPT_PATH_ID;
xpt_sim->bus_id = 0;
xpt_sim->max_tagged_dev_openings = 0;
xpt_sim->max_dev_openings = 0;
xpt_sim->devq = cam_simq_alloc(16);
xpt_max_ccbs = 16;
xpt_bus_register(xpt_sim, 0);
/*
* Looking at the XPT from the SIM layer, the XPT is
* the equivelent of a peripheral driver. Allocate
* a peripheral driver entry for us.
*/
if ((status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
CAM_TARGET_WILDCARD,
CAM_LUN_WILDCARD)) != CAM_REQ_CMP) {
printf("xpt_init: xpt_create_path failed with status %#x,"
" failing attach\n", status);
return;
}
Fix a problem with the way we handled device invalidation when attaching to a device failed. In theory, the same steps that happen when we get an AC_LOST_DEVICE async notification should have been taken when a driver fails to attach. In practice, that wasn't the case. This only affected the da, cd and ch drivers, but the fix affects all peripheral drivers. There were several possible problems: - In the da driver, we didn't remove the peripheral's softc from the da driver's linked list of softcs. Once the peripheral and softc got removed, we'd get a kernel panic the next time the timeout routine called dasendorderedtag(). - In the da, cd and possibly ch drivers, we didn't remove the peripheral's devstat structure from the devstat queue. Once the peripheral and softc were removed, this could cause a panic if anyone tried to access device statistics. (one component of the linked list wouldn't exist anymore) - In the cd driver, we didn't take the peripheral off the changer run queue if it was scheduled to run. In practice, it's highly unlikely, and maybe impossible that the peripheral would have been on the changer run queue at that stage of the probe process. The fix is: - Add a new peripheral callback function (the "oninvalidate" function) that is called the first time cam_periph_invalidate() is called for a peripheral. - Create new foooninvalidate() routines for each peripheral driver. This routine is always called at splsoftcam(), and contains all the stuff that used to be in the AC_LOST_DEVICE case of the async callback handler. - Move the devstat cleanup call to the destructor/cleanup routines, since some of the drivers do I/O in their close routines. - Make sure that when we're flushing the buffer queue, we traverse it at splbio(). - Add a check for the invalid flag in the pt driver's open routine. Reviewed by: gibbs
1998-10-22 22:16:56 +00:00
cam_periph_alloc(xptregister, NULL, NULL, NULL, "xpt", CAM_PERIPH_BIO,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
path, NULL, 0, NULL);
xpt_free_path(path);
xpt_sim->softc = xpt_periph;
/*
* Register a callback for when interrupts are enabled.
*/
xpt_config_hook =
(struct intr_config_hook *)malloc(sizeof(struct intr_config_hook),
M_TEMP, M_NOWAIT);
if (xpt_config_hook == NULL) {
printf("xpt_init: Cannot malloc config hook "
"- failing attach\n");
return;
}
bzero(xpt_config_hook, sizeof(*xpt_config_hook));
xpt_config_hook->ich_func = xpt_config;
if (config_intrhook_establish(xpt_config_hook) != 0) {
free (xpt_config_hook, M_TEMP);
printf("xpt_init: config_intrhook_establish failed "
"- failing attach\n");
}
/* Install our software interrupt handlers */
a more correct change that should meet the sniff test
1998-12-24 06:01:15 +00:00
register_swi(SWI_CAMNET, swi_camnet);
register_swi(SWI_CAMBIO, swi_cambio);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
static cam_status
xptregister(struct cam_periph *periph, void *arg)
{
if (periph == NULL) {
printf("xptregister: periph was NULL!!\n");
return(CAM_REQ_CMP_ERR);
}
periph->softc = NULL;
xpt_periph = periph;
return(CAM_REQ_CMP);
}
int32_t
xpt_add_periph(struct cam_periph *periph)
{
struct cam_ed *device;
int32_t status;
struct periph_list *periph_head;
device = periph->path->device;
periph_head = &device->periphs;
status = CAM_REQ_CMP;
if (device != NULL) {
int s;
/*
* Make room for this peripheral
* so it will fit in the queue
* when it's scheduled to run
*/
s = splsoftcam();
status = camq_resize(&device->drvq,
device->drvq.array_size + 1);
device->generation++;
SLIST_INSERT_HEAD(periph_head, periph, periph_links);
splx(s);
}
xsoftc.generation++;
return (status);
}
void
xpt_remove_periph(struct cam_periph *periph)
{
struct cam_ed *device;
device = periph->path->device;
if (device != NULL) {
int s;
struct periph_list *periph_head;
periph_head = &device->periphs;
/* Release the slot for this peripheral */
s = splsoftcam();
camq_resize(&device->drvq, device->drvq.array_size - 1);
device->generation++;
SLIST_REMOVE(periph_head, periph, cam_periph, periph_links);
splx(s);
}
xsoftc.generation++;
}
void
xpt_announce_periph(struct cam_periph *periph, char *announce_string)
{
int s;
u_int mb;
struct cam_path *path;
struct ccb_trans_settings cts;
path = periph->path;
/*
* To ensure that this is printed in one piece,
* mask out CAM interrupts.
*/
s = splsoftcam();
printf("%s%d at %s%d bus %d target %d lun %d\n",
periph->periph_name, periph->unit_number,
path->bus->sim->sim_name,
path->bus->sim->unit_number,
path->bus->sim->bus_id,
path->target->target_id,
path->device->lun_id);
printf("%s%d: ", periph->periph_name, periph->unit_number);
scsi_print_inquiry(&path->device->inq_data);
if ((bootverbose)
&& (path->device->serial_num_len > 0)) {
/* Don't wrap the screen - print only the first 60 chars */
printf("%s%d: Serial Number %.60s\n", periph->periph_name,
periph->unit_number, path->device->serial_num);
}
xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
cts.flags = CCB_TRANS_CURRENT_SETTINGS;
xpt_action((union ccb*)&cts);
if (cts.ccb_h.status == CAM_REQ_CMP) {
u_int speed;
u_int freq;
if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
&& cts.sync_offset != 0) {
freq = scsi_calc_syncsrate(cts.sync_period);
speed = freq;
} else {
Add a number of interrelated CAM feature enhancements and bug fixes. NOTE: These changes will require recompilation of any userland applications, like cdrecord, xmcd, etc., that use the CAM passthrough interface. A make world is recommended. camcontrol.[c8]: - We now support two new commands, "tags" and "negotiate". - The tags commands allows users to view the number of tagged openings for a device as well as a number of other related parameters, and it allows users to set tagged openings for a device. - The negotiate command allows users to enable and disable disconnection and tagged queueing, set sync rates, offsets and bus width. Note that not all of those features are available for all controllers. Only the adv, ahc, and ncr drivers fully support all of the features at this point. Some cards do not allow the setting of sync rates, offsets and the like, and some of the drivers don't have any facilities to do so. Some drivers, like the adw driver, only support enabling or disabling sync negotiation, but do not support setting sync rates. - new description in the camcontrol man page of how to format a disk - cleanup of the camcontrol inquiry command - add support in the 'devlist' command for skipping unconfigured devices if -v was not specified on the command line. - make use of the new base_transfer_speed in the path inquiry CCB. - fix CCB bzero cases cam_xpt.c, cam_sim.[ch], cam_ccb.h: - new flags on many CCB function codes to designate whether they're non-immediate, use a user-supplied CCB, and can only be passed from userland programs via the xpt device. Use these flags in the transport layer and pass driver to categorize CCBs. - new flag in the transport layer device matching code for device nodes that indicates whether a device is unconfigured - bump the CAM version from 0x10 to 0x11 - Change the CAM ioctls to use the version as their group code, so we can force users to recompile code even when the CCB size doesn't change. - add + fill in a new value in the path inquiry CCB, base_transfer_speed. Remove a corresponding field from the cam_sim structure, and add code to every SIM to set this field to the proper value. - Fix the set transfer settings code in the transport layer. scsi_cd.c: - make some variables volatile instead of just casting them in various places - fix a race condition in the changer code - attach unless we get a "logical unit not supported" error. This should fix all of the cases where people have devices that return weird errors when they don't have media in the drive. scsi_da.c: - attach unless we get a "logical unit not supported" error scsi_pass.c: - for immediate CCBs, just malloc a CCB to send the user request in. This gets rid of the 'held' count problem in camcontrol tags. scsi_pass.h: - change the CAM ioctls to use the CAM version as their group code. adv driver: - Allow changing the sync rate and offset separately. adw driver - Allow changing the sync rate and offset separately. aha driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. ahc driver: - Allow setting offset and sync rate separately bt driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. NCR driver: - Fix the ultra/ultra 2 negotiation bug - allow setting both the sync rate and offset separately Other HBA drivers: - Put code in to set the base_transfer_speed field for XPT_GET_TRAN_SETTINGS CCBs. Reviewed by: gibbs, mjacob (isp), imp (aha)
1999-05-06 20:16:39 +00:00
struct ccb_pathinq cpi;
/* Ask the SIM for its base transfer speed */
xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
speed = cpi.base_transfer_speed;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
freq = 0;
}
if ((cts.valid & CCB_TRANS_BUS_WIDTH_VALID) != 0)
speed *= (0x01 << cts.bus_width);
mb = speed / 1000;
if (mb > 0)
Fix sync rate and transfer rate printouts in xpt_announce_periph(). Sync rates like 4.032MHz were getting printed as 4.32MHz. Also, add a quirk entry for the 18G Quantum Atlas III. Like most other recent Quantum drives, it bogusly reports queue full. Thanks to Andre Albsmeier <andre.albsmeier@mchp.siemens.de> for the Atlas III inquiry information. Reviewed by: gibbs
1999-02-18 18:08:39 +00:00
printf("%s%d: %d.%03dMB/s transfers",
periph->periph_name, periph->unit_number,
mb, speed % 1000);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
else
printf("%s%d: %dKB/s transfers", periph->periph_name,
periph->unit_number, (speed % 1000) * 1000);
if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
&& cts.sync_offset != 0) {
Fix sync rate and transfer rate printouts in xpt_announce_periph(). Sync rates like 4.032MHz were getting printed as 4.32MHz. Also, add a quirk entry for the 18G Quantum Atlas III. Like most other recent Quantum drives, it bogusly reports queue full. Thanks to Andre Albsmeier <andre.albsmeier@mchp.siemens.de> for the Atlas III inquiry information. Reviewed by: gibbs
1999-02-18 18:08:39 +00:00
printf(" (%d.%03dMHz, offset %d", freq / 1000,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
freq % 1000, cts.sync_offset);
}
if ((cts.valid & CCB_TRANS_BUS_WIDTH_VALID) != 0
&& cts.bus_width > 0) {
if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
&& cts.sync_offset != 0) {
printf(", ");
} else {
printf(" (");
}
printf("%dbit)", 8 * (0x01 << cts.bus_width));
} else if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
&& cts.sync_offset != 0) {
printf(")");
}
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
if (path->device->inq_flags & SID_CmdQue
|| path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
printf(", Tagged Queueing Enabled");
}
printf("\n");
Add a quirk entry for the CFP2107, another drive with broken tagged queuing support. Ensure that we report that a device supports tagged queuing even if the system is waiting a "command count delay" before starting to use them. If a user disables disconnects on a device ensure that tagged queuing is also turned off. We did the right thing during initial configuration, but could be confused by manual changes.
1998-10-07 03:25:21 +00:00
} else if (path->device->inq_flags & SID_CmdQue
|| path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
printf("%s%d: Tagged Queueing Enabled\n",
periph->periph_name, periph->unit_number);
}
/*
* We only want to print the caller's announce string if they've
* passed one in..
*/
if (announce_string != NULL)
printf("%s%d: %s\n", periph->periph_name,
periph->unit_number, announce_string);
splx(s);
}
static dev_match_ret
xptbusmatch(struct dev_match_pattern *patterns, int num_patterns,
struct cam_eb *bus)
{
dev_match_ret retval;
int i;
retval = DM_RET_NONE;
/*
* If we aren't given something to match against, that's an error.
*/
if (bus == NULL)
return(DM_RET_ERROR);
/*
* If there are no match entries, then this bus matches no
* matter what.
*/
if ((patterns == NULL) || (num_patterns == 0))
return(DM_RET_DESCEND | DM_RET_COPY);
for (i = 0; i < num_patterns; i++) {
struct bus_match_pattern *cur_pattern;
/*
* If the pattern in question isn't for a bus node, we
* aren't interested. However, we do indicate to the
* calling routine that we should continue descending the
* tree, since the user wants to match against lower-level
* EDT elements.
*/
if (patterns[i].type != DEV_MATCH_BUS) {
if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
retval |= DM_RET_DESCEND;
continue;
}
cur_pattern = &patterns[i].pattern.bus_pattern;
/*
* If they want to match any bus node, we give them any
* device node.
*/
if (cur_pattern->flags == BUS_MATCH_ANY) {
/* set the copy flag */
retval |= DM_RET_COPY;
/*
* If we've already decided on an action, go ahead
* and return.
*/
if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
return(retval);
}
/*
* Not sure why someone would do this...
*/
if (cur_pattern->flags == BUS_MATCH_NONE)
continue;
if (((cur_pattern->flags & BUS_MATCH_PATH) != 0)
&& (cur_pattern->path_id != bus->path_id))
continue;
if (((cur_pattern->flags & BUS_MATCH_BUS_ID) != 0)
&& (cur_pattern->bus_id != bus->sim->bus_id))
continue;
if (((cur_pattern->flags & BUS_MATCH_UNIT) != 0)
&& (cur_pattern->unit_number != bus->sim->unit_number))
continue;
if (((cur_pattern->flags & BUS_MATCH_NAME) != 0)
&& (strncmp(cur_pattern->dev_name, bus->sim->sim_name,
DEV_IDLEN) != 0))
continue;
/*
* If we get to this point, the user definitely wants
* information on this bus. So tell the caller to copy the
* data out.
*/
retval |= DM_RET_COPY;
/*
* If the return action has been set to descend, then we
* know that we've already seen a non-bus matching
* expression, therefore we need to further descend the tree.
* This won't change by continuing around the loop, so we
* go ahead and return. If we haven't seen a non-bus
* matching expression, we keep going around the loop until
* we exhaust the matching expressions. We'll set the stop
* flag once we fall out of the loop.
*/
if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
return(retval);
}
/*
* If the return action hasn't been set to descend yet, that means
* we haven't seen anything other than bus matching patterns. So
* tell the caller to stop descending the tree -- the user doesn't
* want to match against lower level tree elements.
*/
if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
retval |= DM_RET_STOP;
return(retval);
}
static dev_match_ret
xptdevicematch(struct dev_match_pattern *patterns, int num_patterns,
struct cam_ed *device)
{
dev_match_ret retval;
int i;
retval = DM_RET_NONE;
/*
* If we aren't given something to match against, that's an error.
*/
if (device == NULL)
return(DM_RET_ERROR);
/*
* If there are no match entries, then this device matches no
* matter what.
*/
if ((patterns == NULL) || (patterns == 0))
return(DM_RET_DESCEND | DM_RET_COPY);
for (i = 0; i < num_patterns; i++) {
struct device_match_pattern *cur_pattern;
/*
* If the pattern in question isn't for a device node, we
* aren't interested.
*/
if (patterns[i].type != DEV_MATCH_DEVICE) {
if ((patterns[i].type == DEV_MATCH_PERIPH)
&& ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE))
retval |= DM_RET_DESCEND;
continue;
}
cur_pattern = &patterns[i].pattern.device_pattern;
/*
* If they want to match any device node, we give them any
* device node.
*/
if (cur_pattern->flags == DEV_MATCH_ANY) {
/* set the copy flag */
retval |= DM_RET_COPY;
/*
* If we've already decided on an action, go ahead
* and return.
*/
if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
return(retval);
}
/*
* Not sure why someone would do this...
*/
if (cur_pattern->flags == DEV_MATCH_NONE)
continue;
if (((cur_pattern->flags & DEV_MATCH_PATH) != 0)
&& (cur_pattern->path_id != device->target->bus->path_id))
continue;
if (((cur_pattern->flags & DEV_MATCH_TARGET) != 0)
&& (cur_pattern->target_id != device->target->target_id))
continue;
if (((cur_pattern->flags & DEV_MATCH_LUN) != 0)
&& (cur_pattern->target_lun != device->lun_id))
continue;
if (((cur_pattern->flags & DEV_MATCH_INQUIRY) != 0)
&& (cam_quirkmatch((caddr_t)&device->inq_data,
(caddr_t)&cur_pattern->inq_pat,
1, sizeof(cur_pattern->inq_pat),
scsi_static_inquiry_match) == NULL))
continue;
/*
* If we get to this point, the user definitely wants
* information on this device. So tell the caller to copy
* the data out.
*/
retval |= DM_RET_COPY;
/*
* If the return action has been set to descend, then we
* know that we've already seen a peripheral matching
* expression, therefore we need to further descend the tree.
* This won't change by continuing around the loop, so we
* go ahead and return. If we haven't seen a peripheral
* matching expression, we keep going around the loop until
* we exhaust the matching expressions. We'll set the stop
* flag once we fall out of the loop.
*/
if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
return(retval);
}
/*
* If the return action hasn't been set to descend yet, that means
* we haven't seen any peripheral matching patterns. So tell the
* caller to stop descending the tree -- the user doesn't want to
* match against lower level tree elements.
*/
if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
retval |= DM_RET_STOP;
return(retval);
}
/*
* Match a single peripheral against any number of match patterns.
*/
static dev_match_ret
xptperiphmatch(struct dev_match_pattern *patterns, int num_patterns,
struct cam_periph *periph)
{
dev_match_ret retval;
int i;
/*
* If we aren't given something to match against, that's an error.
*/
if (periph == NULL)
return(DM_RET_ERROR);
/*
* If there are no match entries, then this peripheral matches no
* matter what.
*/
if ((patterns == NULL) || (num_patterns == 0))
return(DM_RET_STOP | DM_RET_COPY);
/*
* There aren't any nodes below a peripheral node, so there's no
* reason to descend the tree any further.
*/
retval = DM_RET_STOP;
for (i = 0; i < num_patterns; i++) {
struct periph_match_pattern *cur_pattern;
/*
* If the pattern in question isn't for a peripheral, we
* aren't interested.
*/
if (patterns[i].type != DEV_MATCH_PERIPH)
continue;
cur_pattern = &patterns[i].pattern.periph_pattern;
/*
* If they want to match on anything, then we will do so.
*/
if (cur_pattern->flags == PERIPH_MATCH_ANY) {
/* set the copy flag */
retval |= DM_RET_COPY;
/*
* We've already set the return action to stop,
* since there are no nodes below peripherals in
* the tree.
*/
return(retval);
}
/*
* Not sure why someone would do this...
*/
if (cur_pattern->flags == PERIPH_MATCH_NONE)
continue;
if (((cur_pattern->flags & PERIPH_MATCH_PATH) != 0)
&& (cur_pattern->path_id != periph->path->bus->path_id))
continue;
/*
* For the target and lun id's, we have to make sure the
* target and lun pointers aren't NULL. The xpt peripheral
* has a wildcard target and device.
*/
if (((cur_pattern->flags & PERIPH_MATCH_TARGET) != 0)
&& ((periph->path->target == NULL)
||(cur_pattern->target_id != periph->path->target->target_id)))
continue;
if (((cur_pattern->flags & PERIPH_MATCH_LUN) != 0)
&& ((periph->path->device == NULL)
|| (cur_pattern->target_lun != periph->path->device->lun_id)))
continue;
if (((cur_pattern->flags & PERIPH_MATCH_UNIT) != 0)
&& (cur_pattern->unit_number != periph->unit_number))
continue;
if (((cur_pattern->flags & PERIPH_MATCH_NAME) != 0)
&& (strncmp(cur_pattern->periph_name, periph->periph_name,
DEV_IDLEN) != 0))
continue;
/*
* If we get to this point, the user definitely wants
* information on this peripheral. So tell the caller to
* copy the data out.
*/
retval |= DM_RET_COPY;
/*
* The return action has already been set to stop, since
* peripherals don't have any nodes below them in the EDT.
*/
return(retval);
}
/*
* If we get to this point, the peripheral that was passed in
* doesn't match any of the patterns.
*/
return(retval);
}
static int
xptedtbusfunc(struct cam_eb *bus, void *arg)
{
struct ccb_dev_match *cdm;
dev_match_ret retval;
cdm = (struct ccb_dev_match *)arg;
/*
* If our position is for something deeper in the tree, that means
* that we've already seen this node. So, we keep going down.
*/
if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
&& (cdm->pos.cookie.bus == bus)
&& (cdm->pos.position_type & CAM_DEV_POS_TARGET)
&& (cdm->pos.cookie.target != NULL))
retval = DM_RET_DESCEND;
else
retval = xptbusmatch(cdm->patterns, cdm->num_patterns, bus);
/*
* If we got an error, bail out of the search.
*/
if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
cdm->status = CAM_DEV_MATCH_ERROR;
return(0);
}
/*
* If the copy flag is set, copy this bus out.
*/
if (retval & DM_RET_COPY) {
int spaceleft, j;
spaceleft = cdm->match_buf_len - (cdm->num_matches *
sizeof(struct dev_match_result));
/*
* If we don't have enough space to put in another
* match result, save our position and tell the
* user there are more devices to check.
*/
if (spaceleft < sizeof(struct dev_match_result)) {
bzero(&cdm->pos, sizeof(cdm->pos));
cdm->pos.position_type =
CAM_DEV_POS_EDT | CAM_DEV_POS_BUS;
cdm->pos.cookie.bus = bus;
cdm->pos.generations[CAM_BUS_GENERATION]=
bus_generation;
cdm->status = CAM_DEV_MATCH_MORE;
return(0);
}
j = cdm->num_matches;
cdm->num_matches++;
cdm->matches[j].type = DEV_MATCH_BUS;
cdm->matches[j].result.bus_result.path_id = bus->path_id;
cdm->matches[j].result.bus_result.bus_id = bus->sim->bus_id;
cdm->matches[j].result.bus_result.unit_number =
bus->sim->unit_number;
strncpy(cdm->matches[j].result.bus_result.dev_name,
bus->sim->sim_name, DEV_IDLEN);
}
/*
* If the user is only interested in busses, there's no
* reason to descend to the next level in the tree.
*/
if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
return(1);
/*
* If there is a target generation recorded, check it to
* make sure the target list hasn't changed.
*/
if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
&& (bus == cdm->pos.cookie.bus)
&& (cdm->pos.position_type & CAM_DEV_POS_TARGET)
&& (cdm->pos.generations[CAM_TARGET_GENERATION] != 0)
&& (cdm->pos.generations[CAM_TARGET_GENERATION] !=
bus->generation)) {
cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
return(0);
}
if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
&& (cdm->pos.cookie.bus == bus)
&& (cdm->pos.position_type & CAM_DEV_POS_TARGET)
&& (cdm->pos.cookie.target != NULL))
return(xpttargettraverse(bus,
(struct cam_et *)cdm->pos.cookie.target,
xptedttargetfunc, arg));
else
return(xpttargettraverse(bus, NULL, xptedttargetfunc, arg));
}
static int
xptedttargetfunc(struct cam_et *target, void *arg)
{
struct ccb_dev_match *cdm;
cdm = (struct ccb_dev_match *)arg;
/*
* If there is a device list generation recorded, check it to
* make sure the device list hasn't changed.
*/
if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
&& (cdm->pos.cookie.bus == target->bus)
&& (cdm->pos.position_type & CAM_DEV_POS_TARGET)
&& (cdm->pos.cookie.target == target)
&& (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
&& (cdm->pos.generations[CAM_DEV_GENERATION] != 0)
&& (cdm->pos.generations[CAM_DEV_GENERATION] !=
target->generation)) {
cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
return(0);
}
if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
&& (cdm->pos.cookie.bus == target->bus)
&& (cdm->pos.position_type & CAM_DEV_POS_TARGET)
&& (cdm->pos.cookie.target == target)
&& (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
&& (cdm->pos.cookie.device != NULL))
return(xptdevicetraverse(target,
(struct cam_ed *)cdm->pos.cookie.device,
xptedtdevicefunc, arg));
else
return(xptdevicetraverse(target, NULL, xptedtdevicefunc, arg));
}
static int
xptedtdevicefunc(struct cam_ed *device, void *arg)
{
struct ccb_dev_match *cdm;
dev_match_ret retval;
cdm = (struct ccb_dev_match *)arg;
/*
* If our position is for something deeper in the tree, that means
* that we've already seen this node. So, we keep going down.
*/
if ((cdm->pos.position_type & CAM_DEV_POS_DEVICE)
&& (cdm->pos.cookie.device == device)
&& (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
&& (cdm->pos.cookie.periph != NULL))
retval = DM_RET_DESCEND;
else
retval = xptdevicematch(cdm->patterns, cdm->num_patterns,
device);
if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
cdm->status = CAM_DEV_MATCH_ERROR;
return(0);
}
/*
* If the copy flag is set, copy this device out.
*/
if (retval & DM_RET_COPY) {
int spaceleft, j;
spaceleft = cdm->match_buf_len - (cdm->num_matches *
sizeof(struct dev_match_result));
/*
* If we don't have enough space to put in another
* match result, save our position and tell the
* user there are more devices to check.
*/
if (spaceleft < sizeof(struct dev_match_result)) {
bzero(&cdm->pos, sizeof(cdm->pos));
cdm->pos.position_type =
CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE;
cdm->pos.cookie.bus = device->target->bus;
cdm->pos.generations[CAM_BUS_GENERATION]=
bus_generation;
cdm->pos.cookie.target = device->target;
cdm->pos.generations[CAM_TARGET_GENERATION] =
device->target->bus->generation;
cdm->pos.cookie.device = device;
cdm->pos.generations[CAM_DEV_GENERATION] =
device->target->generation;
cdm->status = CAM_DEV_MATCH_MORE;
return(0);
}
j = cdm->num_matches;
cdm->num_matches++;
cdm->matches[j].type = DEV_MATCH_DEVICE;
cdm->matches[j].result.device_result.path_id =
device->target->bus->path_id;
cdm->matches[j].result.device_result.target_id =
device->target->target_id;
cdm->matches[j].result.device_result.target_lun =
device->lun_id;
bcopy(&device->inq_data,
&cdm->matches[j].result.device_result.inq_data,
sizeof(struct scsi_inquiry_data));
Add a number of interrelated CAM feature enhancements and bug fixes. NOTE: These changes will require recompilation of any userland applications, like cdrecord, xmcd, etc., that use the CAM passthrough interface. A make world is recommended. camcontrol.[c8]: - We now support two new commands, "tags" and "negotiate". - The tags commands allows users to view the number of tagged openings for a device as well as a number of other related parameters, and it allows users to set tagged openings for a device. - The negotiate command allows users to enable and disable disconnection and tagged queueing, set sync rates, offsets and bus width. Note that not all of those features are available for all controllers. Only the adv, ahc, and ncr drivers fully support all of the features at this point. Some cards do not allow the setting of sync rates, offsets and the like, and some of the drivers don't have any facilities to do so. Some drivers, like the adw driver, only support enabling or disabling sync negotiation, but do not support setting sync rates. - new description in the camcontrol man page of how to format a disk - cleanup of the camcontrol inquiry command - add support in the 'devlist' command for skipping unconfigured devices if -v was not specified on the command line. - make use of the new base_transfer_speed in the path inquiry CCB. - fix CCB bzero cases cam_xpt.c, cam_sim.[ch], cam_ccb.h: - new flags on many CCB function codes to designate whether they're non-immediate, use a user-supplied CCB, and can only be passed from userland programs via the xpt device. Use these flags in the transport layer and pass driver to categorize CCBs. - new flag in the transport layer device matching code for device nodes that indicates whether a device is unconfigured - bump the CAM version from 0x10 to 0x11 - Change the CAM ioctls to use the version as their group code, so we can force users to recompile code even when the CCB size doesn't change. - add + fill in a new value in the path inquiry CCB, base_transfer_speed. Remove a corresponding field from the cam_sim structure, and add code to every SIM to set this field to the proper value. - Fix the set transfer settings code in the transport layer. scsi_cd.c: - make some variables volatile instead of just casting them in various places - fix a race condition in the changer code - attach unless we get a "logical unit not supported" error. This should fix all of the cases where people have devices that return weird errors when they don't have media in the drive. scsi_da.c: - attach unless we get a "logical unit not supported" error scsi_pass.c: - for immediate CCBs, just malloc a CCB to send the user request in. This gets rid of the 'held' count problem in camcontrol tags. scsi_pass.h: - change the CAM ioctls to use the CAM version as their group code. adv driver: - Allow changing the sync rate and offset separately. adw driver - Allow changing the sync rate and offset separately. aha driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. ahc driver: - Allow setting offset and sync rate separately bt driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. NCR driver: - Fix the ultra/ultra 2 negotiation bug - allow setting both the sync rate and offset separately Other HBA drivers: - Put code in to set the base_transfer_speed field for XPT_GET_TRAN_SETTINGS CCBs. Reviewed by: gibbs, mjacob (isp), imp (aha)
1999-05-06 20:16:39 +00:00
/* Let the user know whether this device is unconfigured */
if (device->flags & CAM_DEV_UNCONFIGURED)
cdm->matches[j].result.device_result.flags =
DEV_RESULT_UNCONFIGURED;
else
cdm->matches[j].result.device_result.flags =
DEV_RESULT_NOFLAG;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
/*
* If the user isn't interested in peripherals, don't descend
* the tree any further.
*/
if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
return(1);
/*
* If there is a peripheral list generation recorded, make sure
* it hasn't changed.
*/
if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
&& (device->target->bus == cdm->pos.cookie.bus)
&& (cdm->pos.position_type & CAM_DEV_POS_TARGET)
&& (device->target == cdm->pos.cookie.target)
&& (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
&& (device == cdm->pos.cookie.device)
&& (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
&& (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
&& (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
device->generation)){
cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
return(0);
}
if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
&& (cdm->pos.cookie.bus == device->target->bus)
&& (cdm->pos.position_type & CAM_DEV_POS_TARGET)
&& (cdm->pos.cookie.target == device->target)
&& (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
&& (cdm->pos.cookie.device == device)
&& (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
&& (cdm->pos.cookie.periph != NULL))
return(xptperiphtraverse(device,
(struct cam_periph *)cdm->pos.cookie.periph,
xptedtperiphfunc, arg));
else
return(xptperiphtraverse(device, NULL, xptedtperiphfunc, arg));
}
static int
xptedtperiphfunc(struct cam_periph *periph, void *arg)
{
struct ccb_dev_match *cdm;
dev_match_ret retval;
cdm = (struct ccb_dev_match *)arg;
retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
cdm->status = CAM_DEV_MATCH_ERROR;
return(0);
}
/*
* If the copy flag is set, copy this peripheral out.
*/
if (retval & DM_RET_COPY) {
int spaceleft, j;
spaceleft = cdm->match_buf_len - (cdm->num_matches *
sizeof(struct dev_match_result));
/*
* If we don't have enough space to put in another
* match result, save our position and tell the
* user there are more devices to check.
*/
if (spaceleft < sizeof(struct dev_match_result)) {
bzero(&cdm->pos, sizeof(cdm->pos));
cdm->pos.position_type =
CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE |
CAM_DEV_POS_PERIPH;
cdm->pos.cookie.bus = periph->path->bus;
cdm->pos.generations[CAM_BUS_GENERATION]=
bus_generation;
cdm->pos.cookie.target = periph->path->target;
cdm->pos.generations[CAM_TARGET_GENERATION] =
periph->path->bus->generation;
cdm->pos.cookie.device = periph->path->device;
cdm->pos.generations[CAM_DEV_GENERATION] =
periph->path->target->generation;
cdm->pos.cookie.periph = periph;
cdm->pos.generations[CAM_PERIPH_GENERATION] =
periph->path->device->generation;
cdm->status = CAM_DEV_MATCH_MORE;
return(0);
}
j = cdm->num_matches;
cdm->num_matches++;
cdm->matches[j].type = DEV_MATCH_PERIPH;
cdm->matches[j].result.periph_result.path_id =
periph->path->bus->path_id;
cdm->matches[j].result.periph_result.target_id =
periph->path->target->target_id;
cdm->matches[j].result.periph_result.target_lun =
periph->path->device->lun_id;
cdm->matches[j].result.periph_result.unit_number =
periph->unit_number;
strncpy(cdm->matches[j].result.periph_result.periph_name,
periph->periph_name, DEV_IDLEN);
}
return(1);
}
static int
xptedtmatch(struct ccb_dev_match *cdm)
{
int ret;
cdm->num_matches = 0;
/*
* Check the bus list generation. If it has changed, the user
* needs to reset everything and start over.
*/
if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
&& (cdm->pos.generations[CAM_BUS_GENERATION] != 0)
&& (cdm->pos.generations[CAM_BUS_GENERATION] != bus_generation)) {
cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
return(0);
}
if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
&& (cdm->pos.cookie.bus != NULL))
ret = xptbustraverse((struct cam_eb *)cdm->pos.cookie.bus,
xptedtbusfunc, cdm);
else
ret = xptbustraverse(NULL, xptedtbusfunc, cdm);
/*
* If we get back 0, that means that we had to stop before fully
* traversing the EDT. It also means that one of the subroutines
* has set the status field to the proper value. If we get back 1,
* we've fully traversed the EDT and copied out any matching entries.
*/
if (ret == 1)
cdm->status = CAM_DEV_MATCH_LAST;
return(ret);
}
static int
xptplistpdrvfunc(struct periph_driver **pdrv, void *arg)
{
struct ccb_dev_match *cdm;
cdm = (struct ccb_dev_match *)arg;
if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
&& (cdm->pos.cookie.pdrv == pdrv)
&& (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
&& (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
&& (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
(*pdrv)->generation)) {
cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
return(0);
}
if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
&& (cdm->pos.cookie.pdrv == pdrv)
&& (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
&& (cdm->pos.cookie.periph != NULL))
return(xptpdperiphtraverse(pdrv,
(struct cam_periph *)cdm->pos.cookie.periph,
xptplistperiphfunc, arg));
else
return(xptpdperiphtraverse(pdrv, NULL,xptplistperiphfunc, arg));
}
static int
xptplistperiphfunc(struct cam_periph *periph, void *arg)
{
struct ccb_dev_match *cdm;
dev_match_ret retval;
cdm = (struct ccb_dev_match *)arg;
retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
cdm->status = CAM_DEV_MATCH_ERROR;
return(0);
}
/*
* If the copy flag is set, copy this peripheral out.
*/
if (retval & DM_RET_COPY) {
int spaceleft, j;
spaceleft = cdm->match_buf_len - (cdm->num_matches *
sizeof(struct dev_match_result));
/*
* If we don't have enough space to put in another
* match result, save our position and tell the
* user there are more devices to check.
*/
if (spaceleft < sizeof(struct dev_match_result)) {
struct periph_driver **pdrv;
pdrv = NULL;
bzero(&cdm->pos, sizeof(cdm->pos));
cdm->pos.position_type =
CAM_DEV_POS_PDRV | CAM_DEV_POS_PDPTR |
CAM_DEV_POS_PERIPH;
/*
* This may look a bit non-sensical, but it is
* actually quite logical. There are very few
* peripheral drivers, and bloating every peripheral
* structure with a pointer back to its parent
* peripheral driver linker set entry would cost
* more in the long run than doing this quick lookup.
*/
for (pdrv =
(struct periph_driver **)periphdriver_set.ls_items;
*pdrv != NULL; pdrv++) {
if (strcmp((*pdrv)->driver_name,
periph->periph_name) == 0)
break;
}
if (pdrv == NULL) {
cdm->status = CAM_DEV_MATCH_ERROR;
return(0);
}
cdm->pos.cookie.pdrv = pdrv;
/*
* The periph generation slot does double duty, as
* does the periph pointer slot. They are used for
* both edt and pdrv lookups and positioning.
*/
cdm->pos.cookie.periph = periph;
cdm->pos.generations[CAM_PERIPH_GENERATION] =
(*pdrv)->generation;
cdm->status = CAM_DEV_MATCH_MORE;
return(0);
}
j = cdm->num_matches;
cdm->num_matches++;
cdm->matches[j].type = DEV_MATCH_PERIPH;
cdm->matches[j].result.periph_result.path_id =
periph->path->bus->path_id;
/*
* The transport layer peripheral doesn't have a target or
* lun.
*/
if (periph->path->target)
cdm->matches[j].result.periph_result.target_id =
periph->path->target->target_id;
else
cdm->matches[j].result.periph_result.target_id = -1;
if (periph->path->device)
cdm->matches[j].result.periph_result.target_lun =
periph->path->device->lun_id;
else
cdm->matches[j].result.periph_result.target_lun = -1;
cdm->matches[j].result.periph_result.unit_number =
periph->unit_number;
strncpy(cdm->matches[j].result.periph_result.periph_name,
periph->periph_name, DEV_IDLEN);
}
return(1);
}
static int
xptperiphlistmatch(struct ccb_dev_match *cdm)
{
int ret;
cdm->num_matches = 0;
/*
* At this point in the edt traversal function, we check the bus
* list generation to make sure that no busses have been added or
* removed since the user last sent a XPT_DEV_MATCH ccb through.
* For the peripheral driver list traversal function, however, we
* don't have to worry about new peripheral driver types coming or
* going; they're in a linker set, and therefore can't change
* without a recompile.
*/
if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
&& (cdm->pos.cookie.pdrv != NULL))
ret = xptpdrvtraverse(
cam_periph.c: Move handling of CAM_AUTOSENSE_FAIL into block dealing with all other scsi status errors. cam_queue.c: cam_queue.h: Fix 'off by one' heap bug in a more efficient manner. Since heap algorithms like to deal with indexes started from 1, offset our heap array pointer at allocation time to make this so for a C environment. This makes the implementation of the algorithm a bit more efficient. cam_xpt.c: Use macros for accessing the head of the heap so that code is isolated from implementation details of the heap.
1999-04-19 21:26:08 +00:00
(struct periph_driver **)cdm->pos.cookie.pdrv,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
xptplistpdrvfunc, cdm);
else
ret = xptpdrvtraverse(NULL, xptplistpdrvfunc, cdm);
/*
* If we get back 0, that means that we had to stop before fully
* traversing the peripheral driver tree. It also means that one of
* the subroutines has set the status field to the proper value. If
* we get back 1, we've fully traversed the EDT and copied out any
* matching entries.
*/
if (ret == 1)
cdm->status = CAM_DEV_MATCH_LAST;
return(ret);
}
static int
xptbustraverse(struct cam_eb *start_bus, xpt_busfunc_t *tr_func, void *arg)
{
struct cam_eb *bus, *next_bus;
int retval;
retval = 1;
for (bus = (start_bus ? start_bus : TAILQ_FIRST(&xpt_busses));
bus != NULL;
bus = next_bus) {
next_bus = TAILQ_NEXT(bus, links);
retval = tr_func(bus, arg);
if (retval == 0)
return(retval);
}
return(retval);
}
static int
xpttargettraverse(struct cam_eb *bus, struct cam_et *start_target,
xpt_targetfunc_t *tr_func, void *arg)
{
struct cam_et *target, *next_target;
int retval;
retval = 1;
for (target = (start_target ? start_target :
TAILQ_FIRST(&bus->et_entries));
target != NULL; target = next_target) {
next_target = TAILQ_NEXT(target, links);
retval = tr_func(target, arg);
if (retval == 0)
return(retval);
}
return(retval);
}
static int
xptdevicetraverse(struct cam_et *target, struct cam_ed *start_device,
xpt_devicefunc_t *tr_func, void *arg)
{
struct cam_ed *device, *next_device;
int retval;
retval = 1;
for (device = (start_device ? start_device :
TAILQ_FIRST(&target->ed_entries));
device != NULL;
device = next_device) {
next_device = TAILQ_NEXT(device, links);
retval = tr_func(device, arg);
if (retval == 0)
return(retval);
}
return(retval);
}
static int
xptperiphtraverse(struct cam_ed *device, struct cam_periph *start_periph,
xpt_periphfunc_t *tr_func, void *arg)
{
struct cam_periph *periph, *next_periph;
int retval;
retval = 1;
for (periph = (start_periph ? start_periph :
SLIST_FIRST(&device->periphs));
periph != NULL;
periph = next_periph) {
next_periph = SLIST_NEXT(periph, periph_links);
retval = tr_func(periph, arg);
if (retval == 0)
return(retval);
}
return(retval);
}
static int
xptpdrvtraverse(struct periph_driver **start_pdrv,
xpt_pdrvfunc_t *tr_func, void *arg)
{
struct periph_driver **pdrv;
int retval;
retval = 1;
/*
* We don't traverse the peripheral driver list like we do the
* other lists, because it is a linker set, and therefore cannot be
* changed during runtime. If the peripheral driver list is ever
* re-done to be something other than a linker set (i.e. it can
* change while the system is running), the list traversal should
* be modified to work like the other traversal functions.
*/
for (pdrv = (start_pdrv ? start_pdrv :
(struct periph_driver **)periphdriver_set.ls_items);
*pdrv != NULL; pdrv++) {
retval = tr_func(pdrv, arg);
if (retval == 0)
return(retval);
}
return(retval);
}
static int
xptpdperiphtraverse(struct periph_driver **pdrv,
struct cam_periph *start_periph,
xpt_periphfunc_t *tr_func, void *arg)
{
struct cam_periph *periph, *next_periph;
int retval;
retval = 1;
for (periph = (start_periph ? start_periph :
TAILQ_FIRST(&(*pdrv)->units)); periph != NULL;
periph = next_periph) {
next_periph = TAILQ_NEXT(periph, unit_links);
retval = tr_func(periph, arg);
if (retval == 0)
return(retval);
}
return(retval);
}
static int
xptdefbusfunc(struct cam_eb *bus, void *arg)
{
struct xpt_traverse_config *tr_config;
tr_config = (struct xpt_traverse_config *)arg;
if (tr_config->depth == XPT_DEPTH_BUS) {
xpt_busfunc_t *tr_func;
tr_func = (xpt_busfunc_t *)tr_config->tr_func;
return(tr_func(bus, tr_config->tr_arg));
} else
return(xpttargettraverse(bus, NULL, xptdeftargetfunc, arg));
}
static int
xptdeftargetfunc(struct cam_et *target, void *arg)
{
struct xpt_traverse_config *tr_config;
tr_config = (struct xpt_traverse_config *)arg;
if (tr_config->depth == XPT_DEPTH_TARGET) {
xpt_targetfunc_t *tr_func;
tr_func = (xpt_targetfunc_t *)tr_config->tr_func;
return(tr_func(target, tr_config->tr_arg));
} else
return(xptdevicetraverse(target, NULL, xptdefdevicefunc, arg));
}
static int
xptdefdevicefunc(struct cam_ed *device, void *arg)
{
struct xpt_traverse_config *tr_config;
tr_config = (struct xpt_traverse_config *)arg;
if (tr_config->depth == XPT_DEPTH_DEVICE) {
xpt_devicefunc_t *tr_func;
tr_func = (xpt_devicefunc_t *)tr_config->tr_func;
return(tr_func(device, tr_config->tr_arg));
} else
return(xptperiphtraverse(device, NULL, xptdefperiphfunc, arg));
}
static int
xptdefperiphfunc(struct cam_periph *periph, void *arg)
{
struct xpt_traverse_config *tr_config;
xpt_periphfunc_t *tr_func;
tr_config = (struct xpt_traverse_config *)arg;
tr_func = (xpt_periphfunc_t *)tr_config->tr_func;
/*
* Unlike the other default functions, we don't check for depth
* here. The peripheral driver level is the last level in the EDT,
* so if we're here, we should execute the function in question.
*/
return(tr_func(periph, tr_config->tr_arg));
}
/*
* Execute the given function for every bus in the EDT.
*/
static int
xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg)
{
struct xpt_traverse_config tr_config;
tr_config.depth = XPT_DEPTH_BUS;
tr_config.tr_func = tr_func;
tr_config.tr_arg = arg;
return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
}
The Conner CFP2107 is a fixed-media drive, not removable media. This fixes the quirk that disables tagged queueing for those drives. Also, silence a warning by disabling xpt_for_all_targets() and xpt_for_all_periphs(). These two functions are not currently used, but they should not be removed. They're part of a set of functions that provide a way to execute a function for every {bus,target,device,periph} in the system. If anyone needs to use either function in the future, they can be un-#ifdefed.
1999-01-05 21:37:07 +00:00
#ifdef notusedyet
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* Execute the given function for every target in the EDT.
*/
static int
xpt_for_all_targets(xpt_targetfunc_t *tr_func, void *arg)
{
struct xpt_traverse_config tr_config;
tr_config.depth = XPT_DEPTH_TARGET;
tr_config.tr_func = tr_func;
tr_config.tr_arg = arg;
return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
}
The Conner CFP2107 is a fixed-media drive, not removable media. This fixes the quirk that disables tagged queueing for those drives. Also, silence a warning by disabling xpt_for_all_targets() and xpt_for_all_periphs(). These two functions are not currently used, but they should not be removed. They're part of a set of functions that provide a way to execute a function for every {bus,target,device,periph} in the system. If anyone needs to use either function in the future, they can be un-#ifdefed.
1999-01-05 21:37:07 +00:00
#endif /* notusedyet */
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* Execute the given function for every device in the EDT.
*/
static int
xpt_for_all_devices(xpt_devicefunc_t *tr_func, void *arg)
{
struct xpt_traverse_config tr_config;
tr_config.depth = XPT_DEPTH_DEVICE;
tr_config.tr_func = tr_func;
tr_config.tr_arg = arg;
return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
}
The Conner CFP2107 is a fixed-media drive, not removable media. This fixes the quirk that disables tagged queueing for those drives. Also, silence a warning by disabling xpt_for_all_targets() and xpt_for_all_periphs(). These two functions are not currently used, but they should not be removed. They're part of a set of functions that provide a way to execute a function for every {bus,target,device,periph} in the system. If anyone needs to use either function in the future, they can be un-#ifdefed.
1999-01-05 21:37:07 +00:00
#ifdef notusedyet
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* Execute the given function for every peripheral in the EDT.
*/
static int
xpt_for_all_periphs(xpt_periphfunc_t *tr_func, void *arg)
{
struct xpt_traverse_config tr_config;
tr_config.depth = XPT_DEPTH_PERIPH;
tr_config.tr_func = tr_func;
tr_config.tr_arg = arg;
return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
}
The Conner CFP2107 is a fixed-media drive, not removable media. This fixes the quirk that disables tagged queueing for those drives. Also, silence a warning by disabling xpt_for_all_targets() and xpt_for_all_periphs(). These two functions are not currently used, but they should not be removed. They're part of a set of functions that provide a way to execute a function for every {bus,target,device,periph} in the system. If anyone needs to use either function in the future, they can be un-#ifdefed.
1999-01-05 21:37:07 +00:00
#endif /* notusedyet */
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static int
xptsetasyncfunc(struct cam_ed *device, void *arg)
{
struct cam_path path;
struct ccb_getdev cgd;
struct async_node *cur_entry;
cur_entry = (struct async_node *)arg;
Add support for wildcard device entries in the EDT. The target mode 'Black Hole' device uses this feature to schedule itself against any target or lun attached to a controller that receives an unwanted request from an initiator instead of having an instance per potential target/lun request. Use the wildcard entries to simplify wildcard async callback storage. Don't announce devices twice to peripheral drivers. The devices will be announced as soon as the AC_PATH_REGISTERED event is registered by the peripheral driver, so no manaul push of this event is required. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1999-01-14 06:03:59 +00:00
/*
* Don't report unconfigured devices (Wildcard devs,
* devices only for target mode, device instances
* that have been invalidated but are waiting for
* their last reference count to be released).
*/
if ((device->flags & CAM_DEV_UNCONFIGURED) != 0)
return (1);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
xpt_compile_path(&path,
NULL,
device->target->bus->path_id,
device->target->target_id,
device->lun_id);
xpt_setup_ccb(&cgd.ccb_h, &path, /*priority*/1);
cgd.ccb_h.func_code = XPT_GDEV_TYPE;
xpt_action((union ccb *)&cgd);
cur_entry->callback(cur_entry->callback_arg,
AC_FOUND_DEVICE,
&path, &cgd);
xpt_release_path(&path);
return(1);
}
Add support for wildcard device entries in the EDT. The target mode 'Black Hole' device uses this feature to schedule itself against any target or lun attached to a controller that receives an unwanted request from an initiator instead of having an instance per potential target/lun request. Use the wildcard entries to simplify wildcard async callback storage. Don't announce devices twice to peripheral drivers. The devices will be announced as soon as the AC_PATH_REGISTERED event is registered by the peripheral driver, so no manaul push of this event is required. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1999-01-14 06:03:59 +00:00
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static int
xptsetasyncbusfunc(struct cam_eb *bus, void *arg)
{
struct cam_path path;
struct ccb_pathinq cpi;
struct async_node *cur_entry;
cur_entry = (struct async_node *)arg;
xpt_compile_path(&path, /*periph*/NULL,
bus->sim->path_id,
CAM_TARGET_WILDCARD,
CAM_LUN_WILDCARD);
xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
cur_entry->callback(cur_entry->callback_arg,
AC_PATH_REGISTERED,
&path, &cpi);
xpt_release_path(&path);
return(1);
}
void
xpt_action(union ccb *start_ccb)
{
Run xpt_action at splsoftcam() so that it cannot be re-entered by our SWI. The XPT doesn't have a problem with this itself, but some controllers drivers may have been caught off guard by the old behavior. XPT_CONT_TARGET_IO is also a valid ccb type for cam_periph_unmapmem.
1999-05-25 20:17:29 +00:00
int iopl;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_action\n"));
start_ccb->ccb_h.status = CAM_REQ_INPROG;
Run xpt_action at splsoftcam() so that it cannot be re-entered by our SWI. The XPT doesn't have a problem with this itself, but some controllers drivers may have been caught off guard by the old behavior. XPT_CONT_TARGET_IO is also a valid ccb type for cam_periph_unmapmem.
1999-05-25 20:17:29 +00:00
iopl = splsoftcam();
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
switch (start_ccb->ccb_h.func_code) {
case XPT_SCSI_IO:
Add a new CAM debugging mode, CAM_DEBUG_CDB. This causes the kernel to print out a one line description/dump of every SCSI CDB sent to a particular debugging target or targets. This is a good bit more useful than the other debugging modes, I think. Change some things in LINT to note the availability of this new option. Fix an erroneous argument to scsi_cdb_string() in scsi_all.c Reviewed by: gibbs
1998-10-02 21:00:58 +00:00
{
#ifdef CAMDEBUG
char cdb_str[(SCSI_MAX_CDBLEN * 3) + 1];
struct cam_path *path;
path = start_ccb->ccb_h.path;
#endif
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* For the sake of compatibility with SCSI-1
* devices that may not understand the identify
* message, we include lun information in the
* second byte of all commands. SCSI-1 specifies
* that luns are a 3 bit value and reserves only 3
* bits for lun information in the CDB. Later
* revisions of the SCSI spec allow for more than 8
* luns, but have deprecated lun information in the
* CDB. So, if the lun won't fit, we must omit.
*
* Also be aware that during initial probing for devices,
* the inquiry information is unknown but initialized to 0.
* This means that this code will be exercised while probing
* devices with an ANSI revision greater than 2.
*/
if (SID_ANSI_REV(&start_ccb->ccb_h.path->device->inq_data) <= 2
&& start_ccb->ccb_h.target_lun < 8
&& (start_ccb->ccb_h.flags & CAM_CDB_POINTER) == 0) {
start_ccb->csio.cdb_io.cdb_bytes[1] |=
start_ccb->ccb_h.target_lun << 5;
}
start_ccb->csio.scsi_status = SCSI_STATUS_OK;
Add a new CAM debugging mode, CAM_DEBUG_CDB. This causes the kernel to print out a one line description/dump of every SCSI CDB sent to a particular debugging target or targets. This is a good bit more useful than the other debugging modes, I think. Change some things in LINT to note the availability of this new option. Fix an erroneous argument to scsi_cdb_string() in scsi_all.c Reviewed by: gibbs
1998-10-02 21:00:58 +00:00
CAM_DEBUG(path, CAM_DEBUG_CDB,("%s. CDB: %s\n",
scsi_op_desc(start_ccb->csio.cdb_io.cdb_bytes[0],
&path->device->inq_data),
scsi_cdb_string(start_ccb->csio.cdb_io.cdb_bytes,
Fix several potential buffer overrun conditions. These changes have been tested both in the kernel and in userland. Also, fix a couple of printf warnings that show up when CAMDEBUG is defined. Reviewed by: imp Partially submitted by: imp
1998-10-15 19:08:58 +00:00
cdb_str, sizeof(cdb_str))));
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
/* FALLTHROUGH */
Add a new CAM debugging mode, CAM_DEBUG_CDB. This causes the kernel to print out a one line description/dump of every SCSI CDB sent to a particular debugging target or targets. This is a good bit more useful than the other debugging modes, I think. Change some things in LINT to note the availability of this new option. Fix an erroneous argument to scsi_cdb_string() in scsi_all.c Reviewed by: gibbs
1998-10-02 21:00:58 +00:00
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
case XPT_TARGET_IO:
case XPT_CONT_TARGET_IO:
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
start_ccb->csio.sense_resid = 0;
start_ccb->csio.resid = 0;
/* FALLTHROUGH */
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
case XPT_ENG_EXEC:
{
struct cam_path *path;
int s;
int runq;
path = start_ccb->ccb_h.path;
s = splsoftcam();
cam_ccbq_insert_ccb(&path->device->ccbq, start_ccb);
if (path->device->qfrozen_cnt == 0)
runq = xpt_schedule_dev_sendq(path->bus, path->device);
else
runq = 0;
splx(s);
if (runq != 0)
xpt_run_dev_sendq(path->bus);
break;
}
case XPT_SET_TRAN_SETTINGS:
{
xpt_set_transfer_settings(&start_ccb->cts,
Correct problems with xpt_set_transfer_settings and async transfer negotiation changes with wildcarded paths.
1998-09-25 22:35:56 +00:00
start_ccb->ccb_h.path->device,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*async_update*/FALSE);
break;
}
case XPT_CALC_GEOMETRY:
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
{
struct cam_sim *sim;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/* Filter out garbage */
if (start_ccb->ccg.block_size == 0
|| start_ccb->ccg.volume_size == 0) {
start_ccb->ccg.cylinders = 0;
start_ccb->ccg.heads = 0;
start_ccb->ccg.secs_per_track = 0;
start_ccb->ccb_h.status = CAM_REQ_CMP;
break;
}
#ifdef PC98
/*
* In a PC-98 system, geometry translation depens on
* the "real" device geometry obtained from mode page 4.
* SCSI geometry translation is performed in the
* initialization routine of the SCSI BIOS and the result
* stored in host memory. If the translation is available
* in host memory, use it. If not, rely on the default
* translation the device driver performs.
*/
if (scsi_da_bios_params(&start_ccb->ccg) != 0) {
start_ccb->ccb_h.status = CAM_REQ_CMP;
break;
}
#endif
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
sim = start_ccb->ccb_h.path->bus->sim;
(*(sim->sim_action))(sim, start_ccb);
break;
}
Wire up the XPT_ABORT and XPT_RESET_DEV ccb function codes so they can be delivered to controller drivers. Adjust for changes to the ccb_hdr list types in cam_queue.h
1998-12-15 08:13:10 +00:00
case XPT_ABORT:
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
{
union ccb* abort_ccb;
int s;
abort_ccb = start_ccb->cab.abort_ccb;
if (XPT_FC_IS_DEV_QUEUED(abort_ccb)) {
if (abort_ccb->ccb_h.pinfo.index >= 0) {
struct cam_ccbq *ccbq;
ccbq = &abort_ccb->ccb_h.path->device->ccbq;
cam_ccbq_remove_ccb(ccbq, abort_ccb);
abort_ccb->ccb_h.status =
CAM_REQ_ABORTED|CAM_DEV_QFRZN;
xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
s = splcam();
xpt_done(abort_ccb);
splx(s);
start_ccb->ccb_h.status = CAM_REQ_CMP;
break;
}
if (abort_ccb->ccb_h.pinfo.index == CAM_UNQUEUED_INDEX
&& (abort_ccb->ccb_h.status & CAM_SIM_QUEUED) == 0) {
/*
* We've caught this ccb en route to
* the SIM. Flag it for abort and the
* SIM will do so just before starting
* real work on the CCB.
*/
abort_ccb->ccb_h.status =
CAM_REQ_ABORTED|CAM_DEV_QFRZN;
xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
start_ccb->ccb_h.status = CAM_REQ_CMP;
break;
}
}
if (XPT_FC_IS_QUEUED(abort_ccb)
&& (abort_ccb->ccb_h.pinfo.index == CAM_DONEQ_INDEX)) {
/*
* It's already completed but waiting
* for our SWI to get to it.
*/
start_ccb->ccb_h.status = CAM_UA_ABORT;
break;
}
/*
* If we weren't able to take care of the abort request
* in the XPT, pass the request down to the SIM for processing.
*/
/* FALLTHROUGH */
}
Wire up the XPT_ABORT and XPT_RESET_DEV ccb function codes so they can be delivered to controller drivers. Adjust for changes to the ccb_hdr list types in cam_queue.h
1998-12-15 08:13:10 +00:00
case XPT_RESET_DEV:
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
case XPT_ACCEPT_TARGET_IO:
case XPT_EN_LUN:
case XPT_IMMED_NOTIFY:
case XPT_NOTIFY_ACK:
case XPT_GET_TRAN_SETTINGS:
case XPT_RESET_BUS:
{
struct cam_sim *sim;
sim = start_ccb->ccb_h.path->bus->sim;
(*(sim->sim_action))(sim, start_ccb);
break;
}
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
case XPT_PATH_INQ:
{
struct cam_sim *sim;
sim = start_ccb->ccb_h.path->bus->sim;
(*(sim->sim_action))(sim, start_ccb);
break;
}
case XPT_PATH_STATS:
start_ccb->cpis.last_reset =
start_ccb->ccb_h.path->bus->last_reset;
start_ccb->ccb_h.status = CAM_REQ_CMP;
break;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
case XPT_GDEV_TYPE:
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
{
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
struct cam_ed *dev;
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
int s;
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
dev = start_ccb->ccb_h.path->device;
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
s = splcam();
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
} else {
struct ccb_getdev *cgd;
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
struct cam_eb *bus;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
struct cam_et *tar;
cgd = &start_ccb->cgd;
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
bus = cgd->ccb_h.path->bus;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
tar = cgd->ccb_h.path->target;
cgd->inq_data = dev->inq_data;
cgd->pd_type = SID_TYPE(&dev->inq_data);
Rely on the statistics in XPT_GDEV_STATS instead of the versions still retained in XPT_GDEV_TYPE for binary compatibility. Mark the legacy structure values for removal when we bump the major CAM revision.
1999-05-23 18:57:29 +00:00
#ifndef GARBAGE_COLLECT
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
cgd->dev_openings = dev->ccbq.dev_openings;
cgd->dev_active = dev->ccbq.dev_active;
cgd->devq_openings = dev->ccbq.devq_openings;
cgd->devq_queued = dev->ccbq.queue.entries;
cgd->held = dev->ccbq.held;
cgd->maxtags = dev->quirk->maxtags;
cgd->mintags = dev->quirk->mintags;
Rely on the statistics in XPT_GDEV_STATS instead of the versions still retained in XPT_GDEV_TYPE for binary compatibility. Mark the legacy structure values for removal when we bump the major CAM revision.
1999-05-23 18:57:29 +00:00
#endif
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
cgd->ccb_h.status = CAM_REQ_CMP;
cgd->serial_num_len = dev->serial_num_len;
if ((dev->serial_num_len > 0)
&& (dev->serial_num != NULL))
bcopy(dev->serial_num, cgd->serial_num,
dev->serial_num_len);
}
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
splx(s);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
break;
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
}
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
case XPT_GDEV_STATS:
{
struct cam_ed *dev;
int s;
dev = start_ccb->ccb_h.path->device;
s = splcam();
if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
} else {
struct ccb_getdevstats *cgds;
struct cam_eb *bus;
struct cam_et *tar;
cgds = &start_ccb->cgds;
bus = cgds->ccb_h.path->bus;
tar = cgds->ccb_h.path->target;
cgds->dev_openings = dev->ccbq.dev_openings;
cgds->dev_active = dev->ccbq.dev_active;
cgds->devq_openings = dev->ccbq.devq_openings;
cgds->devq_queued = dev->ccbq.queue.entries;
cgds->held = dev->ccbq.held;
cgds->last_reset = tar->last_reset;
Rely on the statistics in XPT_GDEV_STATS instead of the versions still retained in XPT_GDEV_TYPE for binary compatibility. Mark the legacy structure values for removal when we bump the major CAM revision.
1999-05-23 18:57:29 +00:00
cgds->maxtags = dev->quirk->maxtags;
cgds->mintags = dev->quirk->mintags;
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
if (timevalcmp(&tar->last_reset, &bus->last_reset, <))
cgds->last_reset = bus->last_reset;
cgds->ccb_h.status = CAM_REQ_CMP;
}
splx(s);
break;
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
case XPT_GDEVLIST:
{
struct cam_periph *nperiph;
struct periph_list *periph_head;
struct ccb_getdevlist *cgdl;
int i;
int s;
struct cam_ed *device;
int found;
found = 0;
/*
* Don't want anyone mucking with our data.
*/
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
s = splcam();
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
device = start_ccb->ccb_h.path->device;
periph_head = &device->periphs;
cgdl = &start_ccb->cgdl;
/*
* Check and see if the list has changed since the user
* last requested a list member. If so, tell them that the
* list has changed, and therefore they need to start over
* from the beginning.
*/
if ((cgdl->index != 0) &&
(cgdl->generation != device->generation)) {
cgdl->status = CAM_GDEVLIST_LIST_CHANGED;
splx(s);
break;
}
/*
* Traverse the list of peripherals and attempt to find
* the requested peripheral.
*/
for (nperiph = periph_head->slh_first, i = 0;
(nperiph != NULL) && (i <= cgdl->index);
nperiph = nperiph->periph_links.sle_next, i++) {
if (i == cgdl->index) {
strncpy(cgdl->periph_name,
nperiph->periph_name,
DEV_IDLEN);
cgdl->unit_number = nperiph->unit_number;
found = 1;
}
}
if (found == 0) {
cgdl->status = CAM_GDEVLIST_ERROR;
splx(s);
break;
}
if (nperiph == NULL)
cgdl->status = CAM_GDEVLIST_LAST_DEVICE;
else
cgdl->status = CAM_GDEVLIST_MORE_DEVS;
cgdl->index++;
cgdl->generation = device->generation;
splx(s);
cgdl->ccb_h.status = CAM_REQ_CMP;
break;
}
case XPT_DEV_MATCH:
{
int s;
dev_pos_type position_type;
struct ccb_dev_match *cdm;
int ret;
cdm = &start_ccb->cdm;
/*
* Prevent EDT changes while we traverse it.
*/
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
s = splcam();
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* There are two ways of getting at information in the EDT.
* The first way is via the primary EDT tree. It starts
* with a list of busses, then a list of targets on a bus,
* then devices/luns on a target, and then peripherals on a
* device/lun. The "other" way is by the peripheral driver
* lists. The peripheral driver lists are organized by
* peripheral driver. (obviously) So it makes sense to
* use the peripheral driver list if the user is looking
* for something like "da1", or all "da" devices. If the
* user is looking for something on a particular bus/target
* or lun, it's generally better to go through the EDT tree.
*/
if (cdm->pos.position_type != CAM_DEV_POS_NONE)
position_type = cdm->pos.position_type;
else {
int i;
position_type = CAM_DEV_POS_NONE;
for (i = 0; i < cdm->num_patterns; i++) {
if ((cdm->patterns[i].type == DEV_MATCH_BUS)
||(cdm->patterns[i].type == DEV_MATCH_DEVICE)){
position_type = CAM_DEV_POS_EDT;
break;
}
}
if (cdm->num_patterns == 0)
position_type = CAM_DEV_POS_EDT;
else if (position_type == CAM_DEV_POS_NONE)
position_type = CAM_DEV_POS_PDRV;
}
switch(position_type & CAM_DEV_POS_TYPEMASK) {
case CAM_DEV_POS_EDT:
ret = xptedtmatch(cdm);
break;
case CAM_DEV_POS_PDRV:
ret = xptperiphlistmatch(cdm);
break;
default:
cdm->status = CAM_DEV_MATCH_ERROR;
break;
}
splx(s);
if (cdm->status == CAM_DEV_MATCH_ERROR)
start_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
else
start_ccb->ccb_h.status = CAM_REQ_CMP;
break;
}
case XPT_SASYNC_CB:
{
struct ccb_setasync *csa;
struct async_node *cur_entry;
struct async_list *async_head;
u_int32_t added;
int s;
csa = &start_ccb->csa;
added = csa->event_enable;
Add support for wildcard device entries in the EDT. The target mode 'Black Hole' device uses this feature to schedule itself against any target or lun attached to a controller that receives an unwanted request from an initiator instead of having an instance per potential target/lun request. Use the wildcard entries to simplify wildcard async callback storage. Don't announce devices twice to peripheral drivers. The devices will be announced as soon as the AC_PATH_REGISTERED event is registered by the peripheral driver, so no manaul push of this event is required. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1999-01-14 06:03:59 +00:00
async_head = &csa->ccb_h.path->device->asyncs;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* If there is already an entry for us, simply
* update it.
*/
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
s = splcam();
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
cur_entry = SLIST_FIRST(async_head);
while (cur_entry != NULL) {
if ((cur_entry->callback_arg == csa->callback_arg)
&& (cur_entry->callback == csa->callback))
break;
cur_entry = SLIST_NEXT(cur_entry, links);
}
if (cur_entry != NULL) {
/*
* If the request has no flags set,
* remove the entry.
*/
added &= ~cur_entry->event_enable;
if (csa->event_enable == 0) {
SLIST_REMOVE(async_head, cur_entry,
async_node, links);
Add support for wildcard device entries in the EDT. The target mode 'Black Hole' device uses this feature to schedule itself against any target or lun attached to a controller that receives an unwanted request from an initiator instead of having an instance per potential target/lun request. Use the wildcard entries to simplify wildcard async callback storage. Don't announce devices twice to peripheral drivers. The devices will be announced as soon as the AC_PATH_REGISTERED event is registered by the peripheral driver, so no manaul push of this event is required. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1999-01-14 06:03:59 +00:00
csa->ccb_h.path->device->refcount--;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
free(cur_entry, M_DEVBUF);
} else {
cur_entry->event_enable = csa->event_enable;
}
} else {
cur_entry = malloc(sizeof(*cur_entry), M_DEVBUF,
M_NOWAIT);
if (cur_entry == NULL) {
splx(s);
csa->ccb_h.status = CAM_RESRC_UNAVAIL;
break;
}
cur_entry->callback_arg = csa->callback_arg;
cur_entry->callback = csa->callback;
cur_entry->event_enable = csa->event_enable;
SLIST_INSERT_HEAD(async_head, cur_entry, links);
Add support for wildcard device entries in the EDT. The target mode 'Black Hole' device uses this feature to schedule itself against any target or lun attached to a controller that receives an unwanted request from an initiator instead of having an instance per potential target/lun request. Use the wildcard entries to simplify wildcard async callback storage. Don't announce devices twice to peripheral drivers. The devices will be announced as soon as the AC_PATH_REGISTERED event is registered by the peripheral driver, so no manaul push of this event is required. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1999-01-14 06:03:59 +00:00
csa->ccb_h.path->device->refcount++;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
if ((added & AC_FOUND_DEVICE) != 0) {
/*
* Get this peripheral up to date with all
* the currently existing devices.
*/
xpt_for_all_devices(xptsetasyncfunc, cur_entry);
}
if ((added & AC_PATH_REGISTERED) != 0) {
/*
* Get this peripheral up to date with all
* the currently existing busses.
*/
xpt_for_all_busses(xptsetasyncbusfunc, cur_entry);
}
splx(s);
start_ccb->ccb_h.status = CAM_REQ_CMP;
break;
}
case XPT_REL_SIMQ:
{
struct ccb_relsim *crs;
struct cam_ed *dev;
int s;
crs = &start_ccb->crs;
dev = crs->ccb_h.path->device;
if (dev == NULL) {
crs->ccb_h.status = CAM_DEV_NOT_THERE;
break;
}
s = splcam();
if ((crs->release_flags & RELSIM_ADJUST_OPENINGS) != 0) {
if ((dev->inq_data.flags & SID_CmdQue) != 0) {
/* Don't ever go below one opening */
if (crs->openings > 0) {
xpt_dev_ccbq_resize(crs->ccb_h.path,
crs->openings);
People who wanted the "tagged opening" message can boot -v. The rest of us, who appear to have complained incessantly about this message since it appeared, can now stop.
1999-03-11 10:48:02 +00:00
if (bootverbose) {
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
xpt_print_path(crs->ccb_h.path);
printf("tagged openings "
"now %d\n",
crs->openings);
}
}
}
}
if ((crs->release_flags & RELSIM_RELEASE_AFTER_TIMEOUT) != 0) {
if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
/*
* Just extend the old timeout and decrement
* the freeze count so that a single timeout
* is sufficient for releasing the queue.
*/
start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
untimeout(xpt_release_devq_timeout,
dev, dev->c_handle);
} else {
start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
}
dev->c_handle =
timeout(xpt_release_devq_timeout,
dev,
(crs->release_timeout * hz) / 1000);
dev->flags |= CAM_DEV_REL_TIMEOUT_PENDING;
}
if ((crs->release_flags & RELSIM_RELEASE_AFTER_CMDCMPLT) != 0) {
if ((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0) {
/*
* Decrement the freeze count so that a single
* completion is still sufficient to unfreeze
* the queue.
*/
start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
} else {
dev->flags |= CAM_DEV_REL_ON_COMPLETE;
start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
}
}
if ((crs->release_flags & RELSIM_RELEASE_AFTER_QEMPTY) != 0) {
if ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
|| (dev->ccbq.dev_active == 0)) {
start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
} else {
dev->flags |= CAM_DEV_REL_ON_QUEUE_EMPTY;
start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
}
}
splx(s);
if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) == 0) {
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
xpt_release_devq(crs->ccb_h.path, /*count*/1,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*run_queue*/TRUE);
}
start_ccb->crs.qfrozen_cnt = dev->qfrozen_cnt;
start_ccb->ccb_h.status = CAM_REQ_CMP;
break;
}
case XPT_SCAN_BUS:
xpt_scan_bus(start_ccb->ccb_h.path->periph, start_ccb);
break;
case XPT_SCAN_LUN:
xpt_scan_lun(start_ccb->ccb_h.path->periph,
start_ccb->ccb_h.path, start_ccb->crcn.flags,
start_ccb);
break;
case XPT_DEBUG: {
#ifdef CAMDEBUG
int s;
s = splcam();
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
#ifdef CAM_DEBUG_DELAY
cam_debug_delay = CAM_DEBUG_DELAY;
#endif
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
cam_dflags = start_ccb->cdbg.flags;
if (cam_dpath != NULL) {
xpt_free_path(cam_dpath);
cam_dpath = NULL;
}
if (cam_dflags != CAM_DEBUG_NONE) {
if (xpt_create_path(&cam_dpath, xpt_periph,
start_ccb->ccb_h.path_id,
start_ccb->ccb_h.target_id,
start_ccb->ccb_h.target_lun) !=
CAM_REQ_CMP) {
start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
cam_dflags = CAM_DEBUG_NONE;
use CAM_DEBUG_XPT to track XPT; correct a misspelling
1998-12-06 00:06:48 +00:00
} else {
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
start_ccb->ccb_h.status = CAM_REQ_CMP;
use CAM_DEBUG_XPT to track XPT; correct a misspelling
1998-12-06 00:06:48 +00:00
xpt_print_path(cam_dpath);
printf("debugging flags now %x\n", cam_dflags);
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
} else {
cam_dpath = NULL;
start_ccb->ccb_h.status = CAM_REQ_CMP;
}
splx(s);
#else /* !CAMDEBUG */
start_ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
#endif /* CAMDEBUG */
break;
}
case XPT_NOOP:
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0)
xpt_freeze_devq(start_ccb->ccb_h.path, 1);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
start_ccb->ccb_h.status = CAM_REQ_CMP;
break;
default:
case XPT_SDEV_TYPE:
case XPT_TERM_IO:
case XPT_ENG_INQ:
/* XXX Implement */
start_ccb->ccb_h.status = CAM_PROVIDE_FAIL;
break;
}
Run xpt_action at splsoftcam() so that it cannot be re-entered by our SWI. The XPT doesn't have a problem with this itself, but some controllers drivers may have been caught off guard by the old behavior. XPT_CONT_TARGET_IO is also a valid ccb type for cam_periph_unmapmem.
1999-05-25 20:17:29 +00:00
splx(iopl);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
void
xpt_polled_action(union ccb *start_ccb)
{
int s;
u_int32_t timeout;
struct cam_sim *sim;
struct cam_devq *devq;
struct cam_ed *dev;
timeout = start_ccb->ccb_h.timeout;
sim = start_ccb->ccb_h.path->bus->sim;
devq = sim->devq;
dev = start_ccb->ccb_h.path->device;
s = splcam();
/*
* Steal an opening so that no other queued requests
* can get it before us while we simulate interrupts.
*/
dev->ccbq.devq_openings--;
dev->ccbq.dev_openings--;
while((devq->send_openings <= 0 || dev->ccbq.dev_openings < 0)
&& (--timeout > 0)) {
DELAY(1000);
(*(sim->sim_poll))(sim);
swi_camnet();
swi_cambio();
}
dev->ccbq.devq_openings++;
dev->ccbq.dev_openings++;
if (timeout != 0) {
xpt_action(start_ccb);
while(--timeout > 0) {
(*(sim->sim_poll))(sim);
swi_camnet();
swi_cambio();
if ((start_ccb->ccb_h.status & CAM_STATUS_MASK)
!= CAM_REQ_INPROG)
break;
DELAY(1000);
}
if (timeout == 0) {
/*
* XXX Is it worth adding a sim_timeout entry
* point so we can attempt recovery? If
* this is only used for dumps, I don't think
* it is.
*/
start_ccb->ccb_h.status = CAM_CMD_TIMEOUT;
}
} else {
start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
}
splx(s);
}
/*
* Schedule a peripheral driver to receive a ccb when it's
* target device has space for more transactions.
*/
void
xpt_schedule(struct cam_periph *perph, u_int32_t new_priority)
{
struct cam_ed *device;
int s;
int runq;
CAM_DEBUG(perph->path, CAM_DEBUG_TRACE, ("xpt_schedule\n"));
device = perph->path->device;
s = splsoftcam();
if (periph_is_queued(perph)) {
/* Simply reorder based on new priority */
CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
(" change priority to %d\n", new_priority));
if (new_priority < perph->pinfo.priority) {
camq_change_priority(&device->drvq,
perph->pinfo.index,
new_priority);
}
runq = 0;
} else {
/* New entry on the queue */
CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
(" added periph to queue\n"));
perph->pinfo.priority = new_priority;
Remove camq_regen(). We already perform modular comparisons for generation counts, so no further steps to deal with generation count wrap are required. Fix an off by one problem in the camq heap code.
1999-04-07 22:57:48 +00:00
perph->pinfo.generation = ++device->drvq.generation;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
camq_insert(&device->drvq, &perph->pinfo);
runq = xpt_schedule_dev_allocq(perph->path->bus, device);
}
splx(s);
if (runq != 0) {
CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
(" calling xpt_run_devq\n"));
xpt_run_dev_allocq(perph->path->bus);
}
}
/*
* Schedule a device to run on a given queue.
* If the device was inserted as a new entry on the queue,
* return 1 meaning the device queue should be run. If we
* were already queued, implying someone else has already
* started the queue, return 0 so the caller doesn't attempt
* to run the queue. Must be run at either splsoftcam
* (or splcam since that encompases splsoftcam).
*/
static int
xpt_schedule_dev(struct camq *queue, cam_pinfo *pinfo,
u_int32_t new_priority)
{
int retval;
u_int32_t old_priority;
use CAM_DEBUG_XPT to track XPT; correct a misspelling
1998-12-06 00:06:48 +00:00
CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_schedule_dev\n"));
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
old_priority = pinfo->priority;
/*
* Are we already queued?
*/
if (pinfo->index != CAM_UNQUEUED_INDEX) {
/* Simply reorder based on new priority */
if (new_priority < old_priority) {
camq_change_priority(queue, pinfo->index,
new_priority);
use CAM_DEBUG_XPT to track XPT; correct a misspelling
1998-12-06 00:06:48 +00:00
CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
("changed priority to %d\n",
new_priority));
}
retval = 0;
} else {
/* New entry on the queue */
if (new_priority < old_priority)
pinfo->priority = new_priority;
use CAM_DEBUG_XPT to track XPT; correct a misspelling
1998-12-06 00:06:48 +00:00
CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
("Inserting onto queue\n"));
Remove camq_regen(). We already perform modular comparisons for generation counts, so no further steps to deal with generation count wrap are required. Fix an off by one problem in the camq heap code.
1999-04-07 22:57:48 +00:00
pinfo->generation = ++queue->generation;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
camq_insert(queue, pinfo);
retval = 1;
}
return (retval);
}
static void
xpt_run_dev_allocq(struct cam_eb *bus)
{
struct cam_devq *devq;
int s;
use CAM_DEBUG_XPT to track XPT; correct a misspelling
1998-12-06 00:06:48 +00:00
CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_allocq\n"));
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
devq = bus->sim->devq;
use CAM_DEBUG_XPT to track XPT; correct a misspelling
1998-12-06 00:06:48 +00:00
CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
(" qfrozen_cnt == 0x%x, entries == %d, "
"openings == %d, active == %d\n",
devq->alloc_queue.qfrozen_cnt,
devq->alloc_queue.entries,
devq->alloc_openings,
devq->alloc_active));
s = splsoftcam();
devq->alloc_queue.qfrozen_cnt++;
while ((devq->alloc_queue.entries > 0)
&& (devq->alloc_openings > 0)
&& (devq->alloc_queue.qfrozen_cnt <= 1)) {
struct cam_ed_qinfo *qinfo;
struct cam_ed *device;
union ccb *work_ccb;
struct cam_periph *drv;
struct camq *drvq;
qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->alloc_queue,
cam_periph.c: Move handling of CAM_AUTOSENSE_FAIL into block dealing with all other scsi status errors. cam_queue.c: cam_queue.h: Fix 'off by one' heap bug in a more efficient manner. Since heap algorithms like to deal with indexes started from 1, offset our heap array pointer at allocation time to make this so for a C environment. This makes the implementation of the algorithm a bit more efficient. cam_xpt.c: Use macros for accessing the head of the heap so that code is isolated from implementation details of the heap.
1999-04-19 21:26:08 +00:00
CAMQ_HEAD);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
device = qinfo->device;
use CAM_DEBUG_XPT to track XPT; correct a misspelling
1998-12-06 00:06:48 +00:00
CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
Fix several potential buffer overrun conditions. These changes have been tested both in the kernel and in userland. Also, fix a couple of printf warnings that show up when CAMDEBUG is defined. Reviewed by: imp Partially submitted by: imp
1998-10-15 19:08:58 +00:00
("running device %p\n", device));
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
drvq = &device->drvq;
#ifdef CAMDEBUG
if (drvq->entries <= 0) {
panic("xpt_run_dev_allocq: "
"Device on queue without any work to do");
}
#endif
if ((work_ccb = xpt_get_ccb(device)) != NULL) {
devq->alloc_openings--;
devq->alloc_active++;
cam_periph.c: Move handling of CAM_AUTOSENSE_FAIL into block dealing with all other scsi status errors. cam_queue.c: cam_queue.h: Fix 'off by one' heap bug in a more efficient manner. Since heap algorithms like to deal with indexes started from 1, offset our heap array pointer at allocation time to make this so for a C environment. This makes the implementation of the algorithm a bit more efficient. cam_xpt.c: Use macros for accessing the head of the heap so that code is isolated from implementation details of the heap.
1999-04-19 21:26:08 +00:00
drv = (struct cam_periph*)camq_remove(drvq, CAMQ_HEAD);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
splx(s);
xpt_setup_ccb(&work_ccb->ccb_h, drv->path,
drv->pinfo.priority);
use CAM_DEBUG_XPT to track XPT; correct a misspelling
1998-12-06 00:06:48 +00:00
CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
("calling periph start\n"));
drv->periph_start(drv, work_ccb);
} else {
/*
* Malloc failure in alloc_ccb
*/
/*
* XXX add us to a list to be run from free_ccb
* if we don't have any ccbs active on this
* device queue otherwise we may never get run
* again.
*/
break;
}
/* Raise IPL for possible insertion and test at top of loop */
s = splsoftcam();
if (drvq->entries > 0) {
/* We have more work. Attempt to reschedule */
xpt_schedule_dev_allocq(bus, device);
}
}
devq->alloc_queue.qfrozen_cnt--;
splx(s);
}
static void
xpt_run_dev_sendq(struct cam_eb *bus)
{
struct cam_devq *devq;
int s;
use CAM_DEBUG_XPT to track XPT; correct a misspelling
1998-12-06 00:06:48 +00:00
CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_sendq\n"));
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
devq = bus->sim->devq;
s = splcam();
devq->send_queue.qfrozen_cnt++;
splx(s);
s = splsoftcam();
while ((devq->send_queue.entries > 0)
&& (devq->send_openings > 0)) {
struct cam_ed_qinfo *qinfo;
struct cam_ed *device;
union ccb *work_ccb;
struct cam_sim *sim;
int ospl;
ospl = splcam();
if (devq->send_queue.qfrozen_cnt > 1) {
splx(ospl);
break;
}
qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->send_queue,
cam_periph.c: Move handling of CAM_AUTOSENSE_FAIL into block dealing with all other scsi status errors. cam_queue.c: cam_queue.h: Fix 'off by one' heap bug in a more efficient manner. Since heap algorithms like to deal with indexes started from 1, offset our heap array pointer at allocation time to make this so for a C environment. This makes the implementation of the algorithm a bit more efficient. cam_xpt.c: Use macros for accessing the head of the heap so that code is isolated from implementation details of the heap.
1999-04-19 21:26:08 +00:00
CAMQ_HEAD);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
device = qinfo->device;
/*
* If the device has been "frozen", don't attempt
* to run it.
*/
if (device->qfrozen_cnt > 0) {
splx(ospl);
continue;
}
use CAM_DEBUG_XPT to track XPT; correct a misspelling
1998-12-06 00:06:48 +00:00
CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
Fix several potential buffer overrun conditions. These changes have been tested both in the kernel and in userland. Also, fix a couple of printf warnings that show up when CAMDEBUG is defined. Reviewed by: imp Partially submitted by: imp
1998-10-15 19:08:58 +00:00
("running device %p\n", device));
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
cam_periph.c: Move handling of CAM_AUTOSENSE_FAIL into block dealing with all other scsi status errors. cam_queue.c: cam_queue.h: Fix 'off by one' heap bug in a more efficient manner. Since heap algorithms like to deal with indexes started from 1, offset our heap array pointer at allocation time to make this so for a C environment. This makes the implementation of the algorithm a bit more efficient. cam_xpt.c: Use macros for accessing the head of the heap so that code is isolated from implementation details of the heap.
1999-04-19 21:26:08 +00:00
work_ccb = cam_ccbq_peek_ccb(&device->ccbq, CAMQ_HEAD);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
if (work_ccb == NULL) {
printf("device on run queue with no ccbs???");
splx(ospl);
continue;
}
if ((work_ccb->ccb_h.flags & CAM_HIGH_POWER) != 0) {
if (num_highpower <= 0) {
/*
* We got a high power command, but we
* don't have any available slots. Freeze
* the device queue until we have a slot
* available.
*/
device->qfrozen_cnt++;
STAILQ_INSERT_TAIL(&highpowerq,
&work_ccb->ccb_h,
xpt_links.stqe);
splx(ospl);
continue;
} else {
/*
* Consume a high power slot while
* this ccb runs.
*/
num_highpower--;
}
}
devq->active_dev = device;
cam_ccbq_remove_ccb(&device->ccbq, work_ccb);
cam_ccbq_send_ccb(&device->ccbq, work_ccb);
splx(ospl);
devq->send_openings--;
devq->send_active++;
cam_periph.c: Move handling of CAM_AUTOSENSE_FAIL into block dealing with all other scsi status errors. cam_queue.c: cam_queue.h: Fix 'off by one' heap bug in a more efficient manner. Since heap algorithms like to deal with indexes started from 1, offset our heap array pointer at allocation time to make this so for a C environment. This makes the implementation of the algorithm a bit more efficient. cam_xpt.c: Use macros for accessing the head of the heap so that code is isolated from implementation details of the heap.
1999-04-19 21:26:08 +00:00
if (device->ccbq.queue.entries > 0)
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
xpt_schedule_dev_sendq(bus, device);
if (work_ccb && (work_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0){
/*
* The client wants to freeze the queue
* after this CCB is sent.
*/
ospl = splcam();
device->qfrozen_cnt++;
splx(ospl);
}
splx(s);
if ((device->inq_flags & SID_CmdQue) != 0)
work_ccb->ccb_h.flags |= CAM_TAG_ACTION_VALID;
else
/*
* Clear this in case of a retried CCB that failed
* due to a rejected tag.
*/
work_ccb->ccb_h.flags &= ~CAM_TAG_ACTION_VALID;
/*
* Device queues can be shared among multiple sim instances
* that reside on different busses. Use the SIM in the queue
* CCB's path, rather than the one in the bus that was passed
* into this function.
*/
sim = work_ccb->ccb_h.path->bus->sim;
(*(sim->sim_action))(sim, work_ccb);
ospl = splcam();
devq->active_dev = NULL;
splx(ospl);
/* Raise IPL for possible insertion and test at top of loop */
s = splsoftcam();
}
splx(s);
s = splcam();
devq->send_queue.qfrozen_cnt--;
splx(s);
}
/*
* This function merges stuff from the slave ccb into the master ccb, while
* keeping important fields in the master ccb constant.
*/
void
xpt_merge_ccb(union ccb *master_ccb, union ccb *slave_ccb)
{
/*
* Pull fields that are valid for peripheral drivers to set
* into the master CCB along with the CCB "payload".
*/
master_ccb->ccb_h.retry_count = slave_ccb->ccb_h.retry_count;
master_ccb->ccb_h.func_code = slave_ccb->ccb_h.func_code;
master_ccb->ccb_h.timeout = slave_ccb->ccb_h.timeout;
master_ccb->ccb_h.flags = slave_ccb->ccb_h.flags;
bcopy(&(&slave_ccb->ccb_h)[1], &(&master_ccb->ccb_h)[1],
sizeof(union ccb) - sizeof(struct ccb_hdr));
}
void
xpt_setup_ccb(struct ccb_hdr *ccb_h, struct cam_path *path, u_int32_t priority)
{
CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_setup_ccb\n"));
ccb_h->pinfo.priority = priority;
ccb_h->path = path;
ccb_h->path_id = path->bus->path_id;
if (path->target)
ccb_h->target_id = path->target->target_id;
else
ccb_h->target_id = CAM_TARGET_WILDCARD;
if (path->device) {
ccb_h->target_lun = path->device->lun_id;
Remove camq_regen(). We already perform modular comparisons for generation counts, so no further steps to deal with generation count wrap are required. Fix an off by one problem in the camq heap code.
1999-04-07 22:57:48 +00:00
ccb_h->pinfo.generation = ++path->device->ccbq.queue.generation;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
} else {
ccb_h->target_lun = CAM_TARGET_WILDCARD;
}
ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
ccb_h->flags = 0;
}
/* Path manipulation functions */
cam_status
xpt_create_path(struct cam_path **new_path_ptr, struct cam_periph *perph,
path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
{
struct cam_path *path;
cam_status status;
path = (struct cam_path *)malloc(sizeof(*path), M_DEVBUF, M_NOWAIT);
if (path == NULL) {
status = CAM_RESRC_UNAVAIL;
return(status);
}
status = xpt_compile_path(path, perph, path_id, target_id, lun_id);
if (status != CAM_REQ_CMP) {
free(path, M_DEVBUF);
path = NULL;
}
*new_path_ptr = path;
return (status);
}
static cam_status
xpt_compile_path(struct cam_path *new_path, struct cam_periph *perph,
path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
{
struct cam_eb *bus;
struct cam_et *target;
struct cam_ed *device;
cam_status status;
int s;
status = CAM_REQ_CMP; /* Completed without error */
target = NULL; /* Wildcarded */
device = NULL; /* Wildcarded */
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
/*
* We will potentially modify the EDT, so block interrupts
* that may attempt to create cam paths.
*/
s = splcam();
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
bus = xpt_find_bus(path_id);
if (bus == NULL) {
status = CAM_PATH_INVALID;
Add support for wildcard device entries in the EDT. The target mode 'Black Hole' device uses this feature to schedule itself against any target or lun attached to a controller that receives an unwanted request from an initiator instead of having an instance per potential target/lun request. Use the wildcard entries to simplify wildcard async callback storage. Don't announce devices twice to peripheral drivers. The devices will be announced as soon as the AC_PATH_REGISTERED event is registered by the peripheral driver, so no manaul push of this event is required. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1999-01-14 06:03:59 +00:00
} else {
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
target = xpt_find_target(bus, target_id);
if (target == NULL) {
Add support for wildcard device entries in the EDT. The target mode 'Black Hole' device uses this feature to schedule itself against any target or lun attached to a controller that receives an unwanted request from an initiator instead of having an instance per potential target/lun request. Use the wildcard entries to simplify wildcard async callback storage. Don't announce devices twice to peripheral drivers. The devices will be announced as soon as the AC_PATH_REGISTERED event is registered by the peripheral driver, so no manaul push of this event is required. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1999-01-14 06:03:59 +00:00
/* Create one */
struct cam_et *new_target;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
Add support for wildcard device entries in the EDT. The target mode 'Black Hole' device uses this feature to schedule itself against any target or lun attached to a controller that receives an unwanted request from an initiator instead of having an instance per potential target/lun request. Use the wildcard entries to simplify wildcard async callback storage. Don't announce devices twice to peripheral drivers. The devices will be announced as soon as the AC_PATH_REGISTERED event is registered by the peripheral driver, so no manaul push of this event is required. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1999-01-14 06:03:59 +00:00
new_target = xpt_alloc_target(bus, target_id);
if (new_target == NULL) {
status = CAM_RESRC_UNAVAIL;
} else {
target = new_target;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
}
Add support for wildcard device entries in the EDT. The target mode 'Black Hole' device uses this feature to schedule itself against any target or lun attached to a controller that receives an unwanted request from an initiator instead of having an instance per potential target/lun request. Use the wildcard entries to simplify wildcard async callback storage. Don't announce devices twice to peripheral drivers. The devices will be announced as soon as the AC_PATH_REGISTERED event is registered by the peripheral driver, so no manaul push of this event is required. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1999-01-14 06:03:59 +00:00
if (target != NULL) {
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
device = xpt_find_device(target, lun_id);
if (device == NULL) {
Add support for wildcard device entries in the EDT. The target mode 'Black Hole' device uses this feature to schedule itself against any target or lun attached to a controller that receives an unwanted request from an initiator instead of having an instance per potential target/lun request. Use the wildcard entries to simplify wildcard async callback storage. Don't announce devices twice to peripheral drivers. The devices will be announced as soon as the AC_PATH_REGISTERED event is registered by the peripheral driver, so no manaul push of this event is required. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1999-01-14 06:03:59 +00:00
/* Create one */
struct cam_ed *new_device;
new_device = xpt_alloc_device(bus,
target,
lun_id);
if (new_device == NULL) {
status = CAM_RESRC_UNAVAIL;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
} else {
Add support for wildcard device entries in the EDT. The target mode 'Black Hole' device uses this feature to schedule itself against any target or lun attached to a controller that receives an unwanted request from an initiator instead of having an instance per potential target/lun request. Use the wildcard entries to simplify wildcard async callback storage. Don't announce devices twice to peripheral drivers. The devices will be announced as soon as the AC_PATH_REGISTERED event is registered by the peripheral driver, so no manaul push of this event is required. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1999-01-14 06:03:59 +00:00
device = new_device;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
}
}
}
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
splx(s);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* Only touch the user's data if we are successful.
*/
if (status == CAM_REQ_CMP) {
new_path->periph = perph;
new_path->bus = bus;
new_path->target = target;
new_path->device = device;
CAM_DEBUG(new_path, CAM_DEBUG_TRACE, ("xpt_compile_path\n"));
} else {
if (device != NULL)
xpt_release_device(bus, target, device);
if (target != NULL)
xpt_release_target(bus, target);
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
if (bus != NULL)
xpt_release_bus(bus);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
return (status);
}
static void
xpt_release_path(struct cam_path *path)
{
CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_release_path\n"));
Release bus entries in the EDT when a path is released. Null out path entries when the path is released to catch bugs. Free our configuration hook when we're done with it.
1999-04-23 23:25:48 +00:00
if (path->device != NULL) {
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
xpt_release_device(path->bus, path->target, path->device);
Release bus entries in the EDT when a path is released. Null out path entries when the path is released to catch bugs. Free our configuration hook when we're done with it.
1999-04-23 23:25:48 +00:00
path->device = NULL;
}
if (path->target != NULL) {
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
xpt_release_target(path->bus, path->target);
Release bus entries in the EDT when a path is released. Null out path entries when the path is released to catch bugs. Free our configuration hook when we're done with it.
1999-04-23 23:25:48 +00:00
path->target = NULL;
}
if (path->bus != NULL) {
xpt_release_bus(path->bus);
path->bus = NULL;
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
void
xpt_free_path(struct cam_path *path)
{
CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_free_path\n"));
xpt_release_path(path);
free(path, M_DEVBUF);
}
/*
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
* Return -1 for failure, 0 for exact match, 1 for match with wildcards
* in path1, 2 for match with wildcards in path2.
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
*/
int
xpt_path_comp(struct cam_path *path1, struct cam_path *path2)
{
int retval = 0;
if (path1->bus != path2->bus) {
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
if (path1->bus->path_id == CAM_BUS_WILDCARD)
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
retval = 1;
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
else if (path2->bus->path_id == CAM_BUS_WILDCARD)
retval = 2;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
else
return (-1);
}
if (path1->target != path2->target) {
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
if (path1->target->target_id == CAM_TARGET_WILDCARD) {
if (retval == 0)
retval = 1;
} else if (path2->target->target_id == CAM_TARGET_WILDCARD)
retval = 2;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
else
return (-1);
}
if (path1->device != path2->device) {
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
if (path1->device->lun_id == CAM_LUN_WILDCARD) {
if (retval == 0)
retval = 1;
} else if (path2->device->lun_id == CAM_LUN_WILDCARD)
retval = 2;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
else
return (-1);
}
return (retval);
}
void
xpt_print_path(struct cam_path *path)
{
if (path == NULL)
printf("(nopath): ");
else {
if (path->periph != NULL)
printf("(%s%d:", path->periph->periph_name,
path->periph->unit_number);
else
printf("(noperiph:");
if (path->bus != NULL)
printf("%s%d:%d:", path->bus->sim->sim_name,
path->bus->sim->unit_number,
path->bus->sim->bus_id);
else
printf("nobus:");
if (path->target != NULL)
printf("%d:", path->target->target_id);
else
printf("X:");
if (path->device != NULL)
printf("%d): ", path->device->lun_id);
else
printf("X): ");
}
}
path_id_t
xpt_path_path_id(struct cam_path *path)
{
return(path->bus->path_id);
}
target_id_t
xpt_path_target_id(struct cam_path *path)
{
if (path->target != NULL)
return (path->target->target_id);
else
return (CAM_TARGET_WILDCARD);
}
lun_id_t
xpt_path_lun_id(struct cam_path *path)
{
if (path->device != NULL)
return (path->device->lun_id);
else
return (CAM_LUN_WILDCARD);
}
struct cam_sim *
xpt_path_sim(struct cam_path *path)
{
return (path->bus->sim);
}
struct cam_periph*
xpt_path_periph(struct cam_path *path)
{
return (path->periph);
}
/*
* Release a CAM control block for the caller. Remit the cost of the structure
* to the device referenced by the path. If the this device had no 'credits'
* and peripheral drivers have registered async callbacks for this notification
* call them now.
*/
void
xpt_release_ccb(union ccb *free_ccb)
{
int s;
struct cam_path *path;
struct cam_ed *device;
struct cam_eb *bus;
use CAM_DEBUG_XPT to track XPT; correct a misspelling
1998-12-06 00:06:48 +00:00
CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_release_ccb\n"));
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
path = free_ccb->ccb_h.path;
device = path->device;
bus = path->bus;
s = splsoftcam();
cam_ccbq_release_opening(&device->ccbq);
if (xpt_ccb_count > xpt_max_ccbs) {
xpt_free_ccb(free_ccb);
xpt_ccb_count--;
} else {
SLIST_INSERT_HEAD(&ccb_freeq, &free_ccb->ccb_h, xpt_links.sle);
}
bus->sim->devq->alloc_openings++;
bus->sim->devq->alloc_active--;
/* XXX Turn this into an inline function - xpt_run_device?? */
if ((device_is_alloc_queued(device) == 0)
&& (device->drvq.entries > 0)) {
xpt_schedule_dev_allocq(bus, device);
}
splx(s);
if (dev_allocq_is_runnable(bus->sim->devq))
xpt_run_dev_allocq(bus);
}
/* Functions accessed by SIM drivers */
/*
* A sim structure, listing the SIM entry points and instance
* identification info is passed to xpt_bus_register to hook the SIM
* into the CAM framework. xpt_bus_register creates a cam_eb entry
* for this new bus and places it in the array of busses and assigns
* it a path_id. The path_id may be influenced by "hard wiring"
* information specified by the user. Once interrupt services are
* availible, the bus will be probed.
*/
int32_t
xpt_bus_register(struct cam_sim *sim, u_int32_t bus)
{
static path_id_t buscount;
struct cam_eb *new_bus;
struct ccb_pathinq cpi;
int s;
sim->bus_id = bus;
new_bus = (struct cam_eb *)malloc(sizeof(*new_bus),
M_DEVBUF, M_NOWAIT);
if (new_bus == NULL) {
/* Couldn't satisfy request */
return (CAM_RESRC_UNAVAIL);
}
bzero(new_bus, sizeof(*new_bus));
if (strcmp(sim->sim_name, "xpt") != 0) {
sim->path_id = xptpathid(sim->sim_name, sim->unit_number,
sim->bus_id, &buscount);
}
new_bus->path_id = sim->path_id;
new_bus->sim = sim;
TAILQ_INIT(&new_bus->et_entries);
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
timevalclear(&new_bus->last_reset);
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
new_bus->refcount = 1; /* Held until a bus_deregister event */
s = splcam();
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
TAILQ_INSERT_TAIL(&xpt_busses, new_bus, links);
bus_generation++;
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
splx(s);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/* Notify interested parties */
if (sim->path_id != CAM_XPT_PATH_ID) {
struct cam_path path;
xpt_compile_path(&path, /*periph*/NULL, sim->path_id,
CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
xpt_async(AC_PATH_REGISTERED, xpt_periph->path, &cpi);
xpt_release_path(&path);
}
return (CAM_SUCCESS);
}
static int
xptnextfreebus(path_id_t startbus)
{
struct cam_sim_config *sim_conf;
sim_conf = cam_sinit;
while (sim_conf->sim_name != NULL) {
if (IS_SPECIFIED(sim_conf->pathid)
&& (startbus == sim_conf->pathid)) {
++startbus;
/* Start the search over */
sim_conf = cam_sinit;
} else {
sim_conf++;
}
}
return (startbus);
}
static int
xptpathid(const char *sim_name, int sim_unit,
int sim_bus, path_id_t *nextpath)
{
struct cam_sim_config *sim_conf;
path_id_t pathid;
pathid = CAM_XPT_PATH_ID;
for (sim_conf = cam_sinit; sim_conf->sim_name != NULL; sim_conf++) {
if (!IS_SPECIFIED(sim_conf->pathid))
continue;
if (!strcmp(sim_name, sim_conf->sim_name)
&& (sim_unit == sim_conf->sim_unit)) {
if (IS_SPECIFIED(sim_conf->sim_bus)) {
if (sim_bus == sim_conf->sim_bus) {
pathid = sim_conf->pathid;
break;
}
} else if (sim_bus == 0) {
/* Unspecified matches bus 0 */
pathid = sim_conf->pathid;
break;
} else {
printf("Ambiguous scbus configuration for %s%d "
"bus %d, cannot wire down. The kernel "
"config entry for scbus%d should "
"specify a controller bus.\n"
"Scbus will be assigned dynamically.\n",
sim_name, sim_unit, sim_bus,
sim_conf->pathid);
break;
}
}
}
if (pathid == CAM_XPT_PATH_ID) {
pathid = xptnextfreebus(*nextpath);
*nextpath = pathid + 1;
}
return (pathid);
}
int32_t
xpt_bus_deregister(path_id)
u_int8_t path_id;
{
/* XXX */
return (CAM_SUCCESS);
}
void
xpt_async(u_int32_t async_code, struct cam_path *path, void *async_arg)
{
struct cam_eb *bus;
struct cam_et *target, *next_target;
struct cam_ed *device, *next_device;
int s;
CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_async\n"));
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
/*
* Most async events come from a CAM interrupt context. In
* a few cases, the error recovery code at the peripheral layer,
* which may run from our SWI or a process context, may signal
* deferred events with a call to xpt_async. Ensure async
* notifications are serialized by blocking cam interrupts.
*/
s = splcam();
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
bus = path->bus;
if (async_code == AC_BUS_RESET) {
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
int s;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
s = splclock();
/* Update our notion of when the last reset occurred */
microtime(&bus->last_reset);
splx(s);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
for (target = TAILQ_FIRST(&bus->et_entries);
target != NULL;
target = next_target) {
next_target = TAILQ_NEXT(target, links);
if (path->target != target
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
&& path->target->target_id != CAM_TARGET_WILDCARD)
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
continue;
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
if (async_code == AC_SENT_BDR) {
int s;
/* Update our notion of when the last reset occurred */
s = splclock();
microtime(&path->target->last_reset);
splx(s);
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
for (device = TAILQ_FIRST(&target->ed_entries);
device != NULL;
device = next_device) {
cam_status status;
struct cam_path newpath;
next_device = TAILQ_NEXT(device, links);
if (path->device != device
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
&& path->device->lun_id != CAM_LUN_WILDCARD)
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
continue;
/*
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
* We need our own path with wildcards expanded to
* handle certain types of events.
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
*/
if ((async_code == AC_SENT_BDR)
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
|| (async_code == AC_BUS_RESET)
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
|| (async_code == AC_INQ_CHANGED))
status = xpt_compile_path(&newpath, NULL,
bus->path_id,
target->target_id,
device->lun_id);
else
Fix a few problems with the tag delay code: - Tagged devices were limited to one transaction (oops) - We revert to untagged with a tag delay if the user changed the transfer negotiation values (via perhaps camcontrol some day). - xpt_async did not use the expanded path in some cases which could cause a panic.
1998-09-24 22:43:54 +00:00
status = CAM_REQ_CMP_ERR;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
Fix a few problems with the tag delay code: - Tagged devices were limited to one transaction (oops) - We revert to untagged with a tag delay if the user changed the transfer negotiation values (via perhaps camcontrol some day). - xpt_async did not use the expanded path in some cases which could cause a panic.
1998-09-24 22:43:54 +00:00
if (status == CAM_REQ_CMP) {
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
/*
Fix a few problems with the tag delay code: - Tagged devices were limited to one transaction (oops) - We revert to untagged with a tag delay if the user changed the transfer negotiation values (via perhaps camcontrol some day). - xpt_async did not use the expanded path in some cases which could cause a panic.
1998-09-24 22:43:54 +00:00
* Allow transfer negotiation to occur in a
* tag free environment.
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
*/
Fix a few problems with the tag delay code: - Tagged devices were limited to one transaction (oops) - We revert to untagged with a tag delay if the user changed the transfer negotiation values (via perhaps camcontrol some day). - xpt_async did not use the expanded path in some cases which could cause a panic.
1998-09-24 22:43:54 +00:00
if (async_code == AC_SENT_BDR
|| async_code == AC_BUS_RESET)
xpt_toggle_tags(&newpath);
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
if (async_code == AC_INQ_CHANGED) {
Fix a few problems with the tag delay code: - Tagged devices were limited to one transaction (oops) - We revert to untagged with a tag delay if the user changed the transfer negotiation values (via perhaps camcontrol some day). - xpt_async did not use the expanded path in some cases which could cause a panic.
1998-09-24 22:43:54 +00:00
/*
* We've sent a start unit command, or
* something similar to a device that
* may have caused its inquiry data to
* change. So we re-scan the device to
* refresh the inquiry data for it.
*/
xpt_scan_lun(newpath.periph, &newpath,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
CAM_EXPECT_INQ_CHANGE,
NULL);
}
Fix a few problems with the tag delay code: - Tagged devices were limited to one transaction (oops) - We revert to untagged with a tag delay if the user changed the transfer negotiation values (via perhaps camcontrol some day). - xpt_async did not use the expanded path in some cases which could cause a panic.
1998-09-24 22:43:54 +00:00
xpt_release_path(&newpath);
Correct problems with xpt_set_transfer_settings and async transfer negotiation changes with wildcarded paths.
1998-09-25 22:35:56 +00:00
} else if (async_code == AC_LOST_DEVICE) {
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
device->flags |= CAM_DEV_UNCONFIGURED;
Correct problems with xpt_set_transfer_settings and async transfer negotiation changes with wildcarded paths.
1998-09-25 22:35:56 +00:00
} else if (async_code == AC_TRANSFER_NEG) {
struct ccb_trans_settings *settings;
settings =
(struct ccb_trans_settings *)async_arg;
xpt_set_transfer_settings(settings, device,
/*async_update*/TRUE);
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
xpt_async_bcast(&device->asyncs,
async_code,
path,
async_arg);
}
}
Add support for wildcard device entries in the EDT. The target mode 'Black Hole' device uses this feature to schedule itself against any target or lun attached to a controller that receives an unwanted request from an initiator instead of having an instance per potential target/lun request. Use the wildcard entries to simplify wildcard async callback storage. Don't announce devices twice to peripheral drivers. The devices will be announced as soon as the AC_PATH_REGISTERED event is registered by the peripheral driver, so no manaul push of this event is required. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1999-01-14 06:03:59 +00:00
/*
* If this wasn't a fully wildcarded async, tell all
* clients that want all async events.
*/
if (bus != xpt_periph->path->bus)
xpt_async_bcast(&xpt_periph->path->device->asyncs, async_code,
path, async_arg);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
splx(s);
}
static void
xpt_async_bcast(struct async_list *async_head,
u_int32_t async_code,
struct cam_path *path, void *async_arg)
{
struct async_node *cur_entry;
cur_entry = SLIST_FIRST(async_head);
while (cur_entry != NULL) {
struct async_node *next_entry;
/*
* Grab the next list entry before we call the current
* entry's callback. This is because the callback function
* can delete its async callback entry.
*/
next_entry = SLIST_NEXT(cur_entry, links);
if ((cur_entry->event_enable & async_code) != 0)
cur_entry->callback(cur_entry->callback_arg,
async_code, path,
async_arg);
cur_entry = next_entry;
}
}
u_int32_t
xpt_freeze_devq(struct cam_path *path, u_int count)
{
int s;
struct ccb_hdr *ccbh;
s = splcam();
path->device->qfrozen_cnt += count;
/*
* Mark the last CCB in the queue as needing
* to be requeued if the driver hasn't
* changed it's state yet. This fixes a race
* where a ccb is just about to be queued to
* a controller driver when it's interrupt routine
* freezes the queue. To completly close the
* hole, controller drives must check to see
* if a ccb's status is still CAM_REQ_INPROG
* under spl protection just before they queue
* the CCB. See ahc_action/ahc_freeze_devq for
* an example.
*/
Wire up the XPT_ABORT and XPT_RESET_DEV ccb function codes so they can be delivered to controller drivers. Adjust for changes to the ccb_hdr list types in cam_queue.h
1998-12-15 08:13:10 +00:00
ccbh = TAILQ_LAST(&path->device->ccbq.active_ccbs, ccb_hdr_tailq);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
if (ccbh && ccbh->status == CAM_REQ_INPROG)
ccbh->status = CAM_REQUEUE_REQ;
splx(s);
return (path->device->qfrozen_cnt);
}
u_int32_t
xpt_freeze_simq(struct cam_sim *sim, u_int count)
{
sim->devq->send_queue.qfrozen_cnt += count;
if (sim->devq->active_dev != NULL) {
struct ccb_hdr *ccbh;
ccbh = TAILQ_LAST(&sim->devq->active_dev->ccbq.active_ccbs,
Wire up the XPT_ABORT and XPT_RESET_DEV ccb function codes so they can be delivered to controller drivers. Adjust for changes to the ccb_hdr list types in cam_queue.h
1998-12-15 08:13:10 +00:00
ccb_hdr_tailq);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
if (ccbh && ccbh->status == CAM_REQ_INPROG)
ccbh->status = CAM_REQUEUE_REQ;
}
return (sim->devq->send_queue.qfrozen_cnt);
}
static void
xpt_release_devq_timeout(void *arg)
{
struct cam_ed *device;
device = (struct cam_ed *)arg;
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
xpt_release_devq_device(device, /*count*/1, /*run_queue*/TRUE);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
void
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
xpt_release_devq(struct cam_path *path, u_int count, int run_queue)
{
xpt_release_devq_device(path->device, count, run_queue);
}
static void
xpt_release_devq_device(struct cam_ed *dev, u_int count, int run_queue)
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
{
int rundevq;
int s;
rundevq = 0;
s = splcam();
if (dev->qfrozen_cnt > 0) {
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
count = (count > dev->qfrozen_cnt) ? dev->qfrozen_cnt : count;
dev->qfrozen_cnt -= count;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
if (dev->qfrozen_cnt == 0) {
/*
* No longer need to wait for a successful
* command completion.
*/
dev->flags &= ~CAM_DEV_REL_ON_COMPLETE;
/*
* Remove any timeouts that might be scheduled
* to release this queue.
*/
if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
untimeout(xpt_release_devq_timeout, dev,
dev->c_handle);
dev->flags &= ~CAM_DEV_REL_TIMEOUT_PENDING;
}
/*
* Now that we are unfrozen schedule the
* device so any pending transactions are
* run.
*/
if ((dev->ccbq.queue.entries > 0)
&& (xpt_schedule_dev_sendq(dev->target->bus, dev))
&& (run_queue != 0)) {
rundevq = 1;
}
}
}
splx(s);
if (rundevq != 0)
xpt_run_dev_sendq(dev->target->bus);
}
void
xpt_release_simq(struct cam_sim *sim, int run_queue)
{
int s;
struct camq *sendq;
sendq = &(sim->devq->send_queue);
s = splcam();
if (sendq->qfrozen_cnt > 0) {
sendq->qfrozen_cnt--;
if (sendq->qfrozen_cnt == 0) {
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
struct cam_eb *bus;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* If there is a timeout scheduled to release this
* sim queue, remove it. The queue frozen count is
* already at 0.
*/
if ((sim->flags & CAM_SIM_REL_TIMEOUT_PENDING) != 0){
untimeout(xpt_release_simq_timeout, sim,
sim->c_handle);
sim->flags &= ~CAM_SIM_REL_TIMEOUT_PENDING;
}
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
bus = xpt_find_bus(sim->path_id);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
splx(s);
if (run_queue) {
/*
* Now that we are unfrozen run the send queue.
*/
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
xpt_run_dev_sendq(bus);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
xpt_release_bus(bus);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
} else
splx(s);
} else
splx(s);
}
static void
xpt_release_simq_timeout(void *arg)
{
struct cam_sim *sim;
sim = (struct cam_sim *)arg;
xpt_release_simq(sim, /* run_queue */ TRUE);
}
void
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
xpt_done(union ccb *done_ccb)
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
{
int s;
s = splcam();
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_done\n"));
Add a number of interrelated CAM feature enhancements and bug fixes. NOTE: These changes will require recompilation of any userland applications, like cdrecord, xmcd, etc., that use the CAM passthrough interface. A make world is recommended. camcontrol.[c8]: - We now support two new commands, "tags" and "negotiate". - The tags commands allows users to view the number of tagged openings for a device as well as a number of other related parameters, and it allows users to set tagged openings for a device. - The negotiate command allows users to enable and disable disconnection and tagged queueing, set sync rates, offsets and bus width. Note that not all of those features are available for all controllers. Only the adv, ahc, and ncr drivers fully support all of the features at this point. Some cards do not allow the setting of sync rates, offsets and the like, and some of the drivers don't have any facilities to do so. Some drivers, like the adw driver, only support enabling or disabling sync negotiation, but do not support setting sync rates. - new description in the camcontrol man page of how to format a disk - cleanup of the camcontrol inquiry command - add support in the 'devlist' command for skipping unconfigured devices if -v was not specified on the command line. - make use of the new base_transfer_speed in the path inquiry CCB. - fix CCB bzero cases cam_xpt.c, cam_sim.[ch], cam_ccb.h: - new flags on many CCB function codes to designate whether they're non-immediate, use a user-supplied CCB, and can only be passed from userland programs via the xpt device. Use these flags in the transport layer and pass driver to categorize CCBs. - new flag in the transport layer device matching code for device nodes that indicates whether a device is unconfigured - bump the CAM version from 0x10 to 0x11 - Change the CAM ioctls to use the version as their group code, so we can force users to recompile code even when the CCB size doesn't change. - add + fill in a new value in the path inquiry CCB, base_transfer_speed. Remove a corresponding field from the cam_sim structure, and add code to every SIM to set this field to the proper value. - Fix the set transfer settings code in the transport layer. scsi_cd.c: - make some variables volatile instead of just casting them in various places - fix a race condition in the changer code - attach unless we get a "logical unit not supported" error. This should fix all of the cases where people have devices that return weird errors when they don't have media in the drive. scsi_da.c: - attach unless we get a "logical unit not supported" error scsi_pass.c: - for immediate CCBs, just malloc a CCB to send the user request in. This gets rid of the 'held' count problem in camcontrol tags. scsi_pass.h: - change the CAM ioctls to use the CAM version as their group code. adv driver: - Allow changing the sync rate and offset separately. adw driver - Allow changing the sync rate and offset separately. aha driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. ahc driver: - Allow setting offset and sync rate separately bt driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. NCR driver: - Fix the ultra/ultra 2 negotiation bug - allow setting both the sync rate and offset separately Other HBA drivers: - Put code in to set the base_transfer_speed field for XPT_GET_TRAN_SETTINGS CCBs. Reviewed by: gibbs, mjacob (isp), imp (aha)
1999-05-06 20:16:39 +00:00
if ((done_ccb->ccb_h.func_code & XPT_FC_QUEUED) != 0) {
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* Queue up the request for handling by our SWI handler
* any of the "non-immediate" type of ccbs.
*/
switch (done_ccb->ccb_h.path->periph->type) {
case CAM_PERIPH_BIO:
TAILQ_INSERT_TAIL(&cam_bioq, &done_ccb->ccb_h,
sim_links.tqe);
done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX;
setsoftcambio();
break;
case CAM_PERIPH_NET:
TAILQ_INSERT_TAIL(&cam_netq, &done_ccb->ccb_h,
sim_links.tqe);
done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX;
setsoftcamnet();
break;
}
}
splx(s);
}
union ccb *
xpt_alloc_ccb()
{
union ccb *new_ccb;
new_ccb = malloc(sizeof(*new_ccb), M_DEVBUF, M_WAITOK);
return (new_ccb);
}
void
xpt_free_ccb(union ccb *free_ccb)
{
free(free_ccb, M_DEVBUF);
}
/* Private XPT functions */
/*
* Get a CAM control block for the caller. Charge the structure to the device
* referenced by the path. If the this device has no 'credits' then the
* device already has the maximum number of outstanding operations under way
* and we return NULL. If we don't have sufficient resources to allocate more
* ccbs, we also return NULL.
*/
static union ccb *
xpt_get_ccb(struct cam_ed *device)
{
union ccb *new_ccb;
int s;
s = splsoftcam();
if ((new_ccb = (union ccb *)ccb_freeq.slh_first) == NULL) {
new_ccb = malloc(sizeof(*new_ccb), M_DEVBUF, M_NOWAIT);
if (new_ccb == NULL) {
splx(s);
return (NULL);
}
callout_handle_init(&new_ccb->ccb_h.timeout_ch);
SLIST_INSERT_HEAD(&ccb_freeq, &new_ccb->ccb_h,
xpt_links.sle);
xpt_ccb_count++;
}
cam_ccbq_take_opening(&device->ccbq);
SLIST_REMOVE_HEAD(&ccb_freeq, xpt_links.sle);
splx(s);
return (new_ccb);
}
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
static void
xpt_release_bus(struct cam_eb *bus)
{
int s;
s = splcam();
if ((--bus->refcount == 0)
&& (TAILQ_FIRST(&bus->et_entries) == NULL)) {
TAILQ_REMOVE(&xpt_busses, bus, links);
bus_generation++;
splx(s);
free(bus, M_DEVBUF);
} else
splx(s);
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static struct cam_et *
xpt_alloc_target(struct cam_eb *bus, target_id_t target_id)
{
struct cam_et *target;
target = (struct cam_et *)malloc(sizeof(*target), M_DEVBUF, M_NOWAIT);
if (target != NULL) {
struct cam_et *cur_target;
target->bus = bus;
target->target_id = target_id;
target->refcount = 1;
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
/*
* Hold a reference to our parent bus so it
* will not go away before we do.
*/
bus->refcount++;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
TAILQ_INIT(&target->ed_entries);
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
timevalclear(&target->last_reset);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/* Insertion sort into our bus's target list */
cur_target = TAILQ_FIRST(&bus->et_entries);
while (cur_target != NULL && cur_target->target_id < target_id)
cur_target = TAILQ_NEXT(cur_target, links);
if (cur_target != NULL) {
TAILQ_INSERT_BEFORE(cur_target, target, links);
} else {
TAILQ_INSERT_TAIL(&bus->et_entries, target, links);
}
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
bus->generation++;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
return (target);
}
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
static void
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
xpt_release_target(struct cam_eb *bus, struct cam_et *target)
{
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
int s;
s = splcam();
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
if ((--target->refcount == 0)
&& (TAILQ_FIRST(&target->ed_entries) == NULL)) {
TAILQ_REMOVE(&bus->et_entries, target, links);
bus->generation++;
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
splx(s);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
free(target, M_DEVBUF);
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
xpt_release_bus(bus);
} else
splx(s);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
static struct cam_ed *
xpt_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
{
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
struct cam_ed *device;
struct cam_devq *devq;
cam_status status;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/* Make space for us in the device queue on our bus */
devq = bus->sim->devq;
status = cam_devq_resize(devq, devq->alloc_queue.array_size + 1);
if (status != CAM_REQ_CMP) {
device = NULL;
} else {
device = (struct cam_ed *)malloc(sizeof(*device),
M_DEVBUF, M_NOWAIT);
}
if (device != NULL) {
struct cam_ed *cur_device;
bzero(device, sizeof(*device));
SLIST_INIT(&device->asyncs);
SLIST_INIT(&device->periphs);
callout_handle_init(&device->c_handle);
device->refcount = 1;
device->flags |= CAM_DEV_UNCONFIGURED;
Rely on the statistics in XPT_GDEV_STATS instead of the versions still retained in XPT_GDEV_TYPE for binary compatibility. Mark the legacy structure values for removal when we bump the major CAM revision.
1999-05-23 18:57:29 +00:00
/*
* Take the default quirk entry until we have inquiry
* data and can determine a better quirk to use.
*/
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
device->quirk = &xpt_quirk_table[xpt_quirk_table_size - 1];
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
cam_init_pinfo(&device->alloc_ccb_entry.pinfo);
device->alloc_ccb_entry.device = device;
cam_init_pinfo(&device->send_ccb_entry.pinfo);
device->send_ccb_entry.device = device;
device->target = target;
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
/*
* Hold a reference to our parent target so it
* will not go away before we do.
*/
target->refcount++;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
device->lun_id = lun_id;
/* Initialize our queues */
if (camq_init(&device->drvq, 0) != 0) {
free(device, M_DEVBUF);
return (NULL);
}
if (cam_ccbq_init(&device->ccbq,
bus->sim->max_dev_openings) != 0) {
camq_fini(&device->drvq);
free(device, M_DEVBUF);
return (NULL);
}
/*
* XXX should be limited by number of CCBs this bus can
* do.
*/
xpt_max_ccbs += device->ccbq.devq_openings;
/* Insertion sort into our target's device list */
cur_device = TAILQ_FIRST(&target->ed_entries);
while (cur_device != NULL && cur_device->lun_id < lun_id)
cur_device = TAILQ_NEXT(cur_device, links);
if (cur_device != NULL) {
TAILQ_INSERT_BEFORE(cur_device, device, links);
} else {
TAILQ_INSERT_TAIL(&target->ed_entries, device, links);
}
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
target->generation++;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
return (device);
}
static void
xpt_release_device(struct cam_eb *bus, struct cam_et *target,
struct cam_ed *device)
{
int s;
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
s = splcam();
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
if ((--device->refcount == 0)
&& ((device->flags & CAM_DEV_UNCONFIGURED) != 0)) {
struct cam_devq *devq;
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
if (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX
|| device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX)
panic("Removing device while still queued for ccbs");
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
if ((device->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0)
untimeout(xpt_release_devq_timeout, device,
device->c_handle);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
TAILQ_REMOVE(&target->ed_entries, device,links);
target->generation++;
xpt_max_ccbs -= device->ccbq.devq_openings;
/* Release our slot in the devq */
devq = bus->sim->devq;
cam_devq_resize(devq, devq->alloc_queue.array_size - 1);
splx(s);
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
free(device, M_DEVBUF);
} else
splx(s);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
static u_int32_t
xpt_dev_ccbq_resize(struct cam_path *path, int newopenings)
{
int s;
int diff;
int result;
struct cam_ed *dev;
dev = path->device;
s = splsoftcam();
diff = newopenings - (dev->ccbq.dev_active + dev->ccbq.dev_openings);
result = cam_ccbq_resize(&dev->ccbq, newopenings);
if (result == CAM_REQ_CMP && (diff < 0)) {
dev->flags |= CAM_DEV_RESIZE_QUEUE_NEEDED;
}
/* Adjust the global limit */
xpt_max_ccbs += diff;
splx(s);
return (result);
}
static struct cam_eb *
xpt_find_bus(path_id_t path_id)
{
struct cam_eb *bus;
for (bus = TAILQ_FIRST(&xpt_busses);
bus != NULL;
bus = TAILQ_NEXT(bus, links)) {
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
if (bus->path_id == path_id) {
bus->refcount++;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
break;
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
return (bus);
}
static struct cam_et *
xpt_find_target(struct cam_eb *bus, target_id_t target_id)
{
struct cam_et *target;
for (target = TAILQ_FIRST(&bus->et_entries);
target != NULL;
target = TAILQ_NEXT(target, links)) {
if (target->target_id == target_id) {
target->refcount++;
break;
}
}
return (target);
}
static struct cam_ed *
xpt_find_device(struct cam_et *target, lun_id_t lun_id)
{
struct cam_ed *device;
for (device = TAILQ_FIRST(&target->ed_entries);
device != NULL;
device = TAILQ_NEXT(device, links)) {
if (device->lun_id == lun_id) {
device->refcount++;
break;
}
}
return (device);
}
typedef struct {
union ccb *request_ccb;
struct ccb_pathinq *cpi;
int pending_count;
} xpt_scan_bus_info;
/*
* To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
* As the scan progresses, xpt_scan_bus is used as the
* callback on completion function.
*/
static void
xpt_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
{
CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
("xpt_scan_bus\n"));
switch (request_ccb->ccb_h.func_code) {
case XPT_SCAN_BUS:
{
xpt_scan_bus_info *scan_info;
union ccb *work_ccb;
struct cam_path *path;
u_int i;
u_int max_target;
u_int initiator_id;
/* Find out the characteristics of the bus */
work_ccb = xpt_alloc_ccb();
xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path,
request_ccb->ccb_h.pinfo.priority);
work_ccb->ccb_h.func_code = XPT_PATH_INQ;
xpt_action(work_ccb);
if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
request_ccb->ccb_h.status = work_ccb->ccb_h.status;
xpt_free_ccb(work_ccb);
xpt_done(request_ccb);
return;
}
Expand the hba_misc fied in the Path Inquiry ccb to allow a controller driver to specify that it does not provide initiator services (PIM_NOINITIATOR) and that the initial bus reset for device probing should be avoided (PIM_NOBUSRESET). Modify the XPT layer to honor these flags.
1998-12-10 04:05:49 +00:00
if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) {
/*
* Can't scan the bus on an adapter that
* cannot perform the initiator role.
*/
request_ccb->ccb_h.status = CAM_REQ_CMP;
xpt_free_ccb(work_ccb);
xpt_done(request_ccb);
return;
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/* Save some state for use while we probe for devices */
scan_info = (xpt_scan_bus_info *)
malloc(sizeof(xpt_scan_bus_info), M_TEMP, M_WAITOK);
scan_info->request_ccb = request_ccb;
scan_info->cpi = &work_ccb->cpi;
/* Cache on our stack so we can work asynchronously */
max_target = scan_info->cpi->max_target;
initiator_id = scan_info->cpi->initiator_id;
/*
* Don't count the initiator if the
* initiator is addressable.
*/
scan_info->pending_count = max_target + 1;
if (initiator_id <= max_target)
scan_info->pending_count--;
for (i = 0; i <= max_target; i++) {
cam_status status;
if (i == initiator_id)
continue;
status = xpt_create_path(&path, xpt_periph,
request_ccb->ccb_h.path_id,
i, 0);
if (status != CAM_REQ_CMP) {
printf("xpt_scan_bus: xpt_create_path failed"
" with status %#x, bus scan halted\n",
status);
break;
}
work_ccb = xpt_alloc_ccb();
xpt_setup_ccb(&work_ccb->ccb_h, path,
request_ccb->ccb_h.pinfo.priority);
work_ccb->ccb_h.func_code = XPT_SCAN_LUN;
work_ccb->ccb_h.cbfcnp = xpt_scan_bus;
work_ccb->ccb_h.ppriv_ptr0 = scan_info;
work_ccb->crcn.flags = request_ccb->crcn.flags;
#if 0
printf("xpt_scan_bus: probing %d:%d:%d\n",
request_ccb->ccb_h.path_id, i, 0);
#endif
xpt_action(work_ccb);
}
break;
}
case XPT_SCAN_LUN:
{
xpt_scan_bus_info *scan_info;
path_id_t path_id;
target_id_t target_id;
lun_id_t lun_id;
/* Reuse the same CCB to query if a device was really found */
scan_info = (xpt_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0;
xpt_setup_ccb(&request_ccb->ccb_h, request_ccb->ccb_h.path,
request_ccb->ccb_h.pinfo.priority);
request_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
path_id = request_ccb->ccb_h.path_id;
target_id = request_ccb->ccb_h.target_id;
lun_id = request_ccb->ccb_h.target_lun;
xpt_action(request_ccb);
#if 0
printf("xpt_scan_bus: got back probe from %d:%d:%d\n",
path_id, target_id, lun_id);
#endif
if (request_ccb->ccb_h.status != CAM_REQ_CMP) {
struct cam_ed *device;
struct cam_et *target;
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
int s;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* If we already probed lun 0 successfully, or
* we have additional configured luns on this
* target that might have "gone away", go onto
* the next lun.
*/
target = request_ccb->ccb_h.path->target;
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
s = splcam();
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
device = TAILQ_FIRST(&target->ed_entries);
if (device != NULL)
device = TAILQ_NEXT(device, links);
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
splx(s);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
if ((lun_id != 0) || (device != NULL)) {
/* Try the next lun */
Put in a limit (8) for lun width- do not exceed probing this unless a device is quirked for allowing it. This will allow SCSI cards to specify their true correct lun width (32 for Qlogic SCSI, 16 or 65536 for Qlogic Fibre Channel) without crippling the system because of f/w breakage of a lot of drives. Reviewed by: gibbs@freebsd.org
1999-08-16 17:47:39 +00:00
if (lun_id < (CAM_SCSI2_MAXLUN-1) ||
(device->quirk->quirks & CAM_QUIRK_HILUNS))
lun_id++;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
} else {
struct cam_ed *device;
device = request_ccb->ccb_h.path->device;
if ((device->quirk->quirks & CAM_QUIRK_NOLUNS) == 0) {
/* Try the next lun */
Put in a limit (8) for lun width- do not exceed probing this unless a device is quirked for allowing it. This will allow SCSI cards to specify their true correct lun width (32 for Qlogic SCSI, 16 or 65536 for Qlogic Fibre Channel) without crippling the system because of f/w breakage of a lot of drives. Reviewed by: gibbs@freebsd.org
1999-08-16 17:47:39 +00:00
if (lun_id < (CAM_SCSI2_MAXLUN-1) ||
(device->quirk->quirks & CAM_QUIRK_HILUNS))
lun_id++;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
}
xpt_free_path(request_ccb->ccb_h.path);
/* Check Bounds */
if ((lun_id == request_ccb->ccb_h.target_lun)
|| lun_id > scan_info->cpi->max_lun) {
/* We're done */
xpt_free_ccb(request_ccb);
scan_info->pending_count--;
if (scan_info->pending_count == 0) {
xpt_free_ccb((union ccb *)scan_info->cpi);
request_ccb = scan_info->request_ccb;
free(scan_info, M_TEMP);
request_ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(request_ccb);
}
} else {
/* Try the next device */
struct cam_path *path;
cam_status status;
path = request_ccb->ccb_h.path;
status = xpt_create_path(&path, xpt_periph,
path_id, target_id, lun_id);
if (status != CAM_REQ_CMP) {
printf("xpt_scan_bus: xpt_create_path failed "
"with status %#x, halting LUN scan\n",
status);
xpt_free_ccb(request_ccb);
scan_info->pending_count--;
if (scan_info->pending_count == 0) {
xpt_free_ccb(
(union ccb *)scan_info->cpi);
request_ccb = scan_info->request_ccb;
free(scan_info, M_TEMP);
request_ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(request_ccb);
break;
}
}
xpt_setup_ccb(&request_ccb->ccb_h, path,
request_ccb->ccb_h.pinfo.priority);
request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
request_ccb->ccb_h.cbfcnp = xpt_scan_bus;
request_ccb->ccb_h.ppriv_ptr0 = scan_info;
request_ccb->crcn.flags =
scan_info->request_ccb->crcn.flags;
#if 0
xpt_print_path(path);
printf("xpt_scan bus probing\n");
#endif
xpt_action(request_ccb);
}
break;
}
default:
break;
}
}
typedef enum {
PROBE_TUR,
PROBE_INQUIRY,
PROBE_MODE_SENSE,
PROBE_SERIAL_NUM,
PROBE_TUR_FOR_NEGOTIATION
} probe_action;
typedef enum {
PROBE_INQUIRY_CKSUM = 0x01,
PROBE_SERIAL_CKSUM = 0x02,
PROBE_NO_ANNOUNCE = 0x04
} probe_flags;
typedef struct {
TAILQ_HEAD(, ccb_hdr) request_ccbs;
probe_action action;
union ccb saved_ccb;
probe_flags flags;
MD5_CTX context;
u_int8_t digest[16];
} probe_softc;
static void
xpt_scan_lun(struct cam_periph *periph, struct cam_path *path,
cam_flags flags, union ccb *request_ccb)
{
Expand the hba_misc fied in the Path Inquiry ccb to allow a controller driver to specify that it does not provide initiator services (PIM_NOINITIATOR) and that the initial bus reset for device probing should be avoided (PIM_NOBUSRESET). Modify the XPT layer to honor these flags.
1998-12-10 04:05:49 +00:00
struct ccb_pathinq cpi;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
cam_status status;
struct cam_path *new_path;
struct cam_periph *old_periph;
int s;
CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
("xpt_scan_lun\n"));
Expand the hba_misc fied in the Path Inquiry ccb to allow a controller driver to specify that it does not provide initiator services (PIM_NOINITIATOR) and that the initial bus reset for device probing should be avoided (PIM_NOBUSRESET). Modify the XPT layer to honor these flags.
1998-12-10 04:05:49 +00:00
xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
if (cpi.ccb_h.status != CAM_REQ_CMP) {
if (request_ccb != NULL) {
request_ccb->ccb_h.status = cpi.ccb_h.status;
xpt_done(request_ccb);
}
return;
}
if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) {
/*
* Can't scan the bus on an adapter that
* cannot perform the initiator role.
*/
if (request_ccb != NULL) {
request_ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(request_ccb);
}
return;
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
if (request_ccb == NULL) {
request_ccb = malloc(sizeof(union ccb), M_TEMP, M_NOWAIT);
if (request_ccb == NULL) {
xpt_print_path(path);
printf("xpt_scan_lun: can't allocate CCB, can't "
"continue\n");
return;
}
new_path = malloc(sizeof(*new_path), M_TEMP, M_NOWAIT);
if (new_path == NULL) {
xpt_print_path(path);
printf("xpt_scan_lun: can't allocate path, can't "
"continue\n");
free(request_ccb, M_TEMP);
return;
}
Fix a bug in the scan lun code that showed up when we did the following sequence of things: - spin up a disk - send an async event to refresh the inquiry data - run through xpt_scan_lun() to re-probe the device - eventually finish the probe, but panic in xpt_done() because the periph pointer wasn't set. Reviewed by: gibbs Reported by: Philippe Regnauld <regnauld@deepo.prosa.dk>
1998-10-13 21:29:04 +00:00
status = xpt_compile_path(new_path, xpt_periph,
path->bus->path_id,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
path->target->target_id,
path->device->lun_id);
if (status != CAM_REQ_CMP) {
xpt_print_path(path);
printf("xpt_scan_lun: can't compile path, can't "
"continue\n");
free(request_ccb, M_TEMP);
free(new_path, M_TEMP);
return;
}
xpt_setup_ccb(&request_ccb->ccb_h, new_path, /*priority*/ 1);
request_ccb->ccb_h.cbfcnp = xptscandone;
request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
request_ccb->crcn.flags = flags;
}
s = splsoftcam();
if ((old_periph = cam_periph_find(path, "probe")) != NULL) {
probe_softc *softc;
softc = (probe_softc *)old_periph->softc;
TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
periph_links.tqe);
} else {
Fix a problem with the way we handled device invalidation when attaching to a device failed. In theory, the same steps that happen when we get an AC_LOST_DEVICE async notification should have been taken when a driver fails to attach. In practice, that wasn't the case. This only affected the da, cd and ch drivers, but the fix affects all peripheral drivers. There were several possible problems: - In the da driver, we didn't remove the peripheral's softc from the da driver's linked list of softcs. Once the peripheral and softc got removed, we'd get a kernel panic the next time the timeout routine called dasendorderedtag(). - In the da, cd and possibly ch drivers, we didn't remove the peripheral's devstat structure from the devstat queue. Once the peripheral and softc were removed, this could cause a panic if anyone tried to access device statistics. (one component of the linked list wouldn't exist anymore) - In the cd driver, we didn't take the peripheral off the changer run queue if it was scheduled to run. In practice, it's highly unlikely, and maybe impossible that the peripheral would have been on the changer run queue at that stage of the probe process. The fix is: - Add a new peripheral callback function (the "oninvalidate" function) that is called the first time cam_periph_invalidate() is called for a peripheral. - Create new foooninvalidate() routines for each peripheral driver. This routine is always called at splsoftcam(), and contains all the stuff that used to be in the AC_LOST_DEVICE case of the async callback handler. - Move the devstat cleanup call to the destructor/cleanup routines, since some of the drivers do I/O in their close routines. - Make sure that when we're flushing the buffer queue, we traverse it at splbio(). - Add a check for the invalid flag in the pt driver's open routine. Reviewed by: gibbs
1998-10-22 22:16:56 +00:00
status = cam_periph_alloc(proberegister, NULL, probecleanup,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
probestart, "probe",
CAM_PERIPH_BIO,
request_ccb->ccb_h.path, NULL, 0,
request_ccb);
if (status != CAM_REQ_CMP) {
xpt_print_path(path);
printf("xpt_scan_lun: cam_alloc_periph returned an "
"error, can't continue probe\n");
request_ccb->ccb_h.status = status;
xpt_done(request_ccb);
}
}
splx(s);
}
static void
xptscandone(struct cam_periph *periph, union ccb *done_ccb)
{
xpt_release_path(done_ccb->ccb_h.path);
free(done_ccb->ccb_h.path, M_TEMP);
free(done_ccb, M_TEMP);
}
static cam_status
proberegister(struct cam_periph *periph, void *arg)
{
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
union ccb *request_ccb; /* CCB representing the probe request */
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
probe_softc *softc;
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
request_ccb = (union ccb *)arg;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
if (periph == NULL) {
printf("proberegister: periph was NULL!!\n");
return(CAM_REQ_CMP_ERR);
}
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
if (request_ccb == NULL) {
printf("proberegister: no probe CCB, can't register device\n");
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
return(CAM_REQ_CMP_ERR);
}
Properly allocate our, per lun, probe peripheral softc from the TEMP malloc pool. Noticed by: Don Lewis <Don.Lewis@tsc.tdk.com>
1998-09-16 13:24:37 +00:00
softc = (probe_softc *)malloc(sizeof(*softc), M_TEMP, M_NOWAIT);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
if (softc == NULL) {
printf("proberegister: Unable to probe new device. "
"Unable to allocate softc\n");
return(CAM_REQ_CMP_ERR);
}
TAILQ_INIT(&softc->request_ccbs);
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
periph_links.tqe);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
softc->flags = 0;
periph->softc = softc;
cam_periph_acquire(periph);
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
/*
* Ensure we've waited at least a bus settle
* delay before attempting to probe the device.
*/
cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset,
SCSI_DELAY);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
probeschedule(periph);
return(CAM_REQ_CMP);
}
static void
probeschedule(struct cam_periph *periph)
{
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
struct ccb_pathinq cpi;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
union ccb *ccb;
probe_softc *softc;
softc = (probe_softc *)periph->softc;
ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* If a device has gone away and another device, or the same one,
* is back in the same place, it should have a unit attention
* condition pending. It will not report the unit attention in
* response to an inquiry, which may leave invalid transfer
* negotiations in effect. The TUR will reveal the unit attention
* condition. Only send the TUR for lun 0, since some devices
* will get confused by commands other than inquiry to non-existent
* luns. If you think a device has gone away start your scan from
* lun 0. This will insure that any bogus transfer settings are
* invalidated.
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
*
* If we haven't seen the device before and the controller supports
* some kind of transfer negotiation, negotiate with the first
* sent command if no bus reset was performed at startup. This
* ensures that the device is not confused by transfer negotiation
* settings left over by loader or BIOS action.
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
*/
Add support for wildcard device entries in the EDT. The target mode 'Black Hole' device uses this feature to schedule itself against any target or lun attached to a controller that receives an unwanted request from an initiator instead of having an instance per potential target/lun request. Use the wildcard entries to simplify wildcard async callback storage. Don't announce devices twice to peripheral drivers. The devices will be announced as soon as the AC_PATH_REGISTERED event is registered by the peripheral driver, so no manaul push of this event is required. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1999-01-14 06:03:59 +00:00
if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
&& (ccb->ccb_h.target_lun == 0)) {
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
softc->action = PROBE_TUR;
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
} else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0
&& (cpi.hba_misc & PIM_NOBUSRESET) != 0) {
proberequestdefaultnegotiation(periph);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
softc->action = PROBE_INQUIRY;
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
} else {
softc->action = PROBE_INQUIRY;
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE)
softc->flags |= PROBE_NO_ANNOUNCE;
else
softc->flags &= ~PROBE_NO_ANNOUNCE;
xpt_schedule(periph, ccb->ccb_h.pinfo.priority);
}
static void
probestart(struct cam_periph *periph, union ccb *start_ccb)
{
/* Probe the device that our peripheral driver points to */
struct ccb_scsiio *csio;
probe_softc *softc;
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n"));
softc = (probe_softc *)periph->softc;
csio = &start_ccb->csio;
switch (softc->action) {
case PROBE_TUR:
case PROBE_TUR_FOR_NEGOTIATION:
{
scsi_test_unit_ready(csio,
/*retries*/4,
probedone,
MSG_SIMPLE_Q_TAG,
SSD_FULL_SIZE,
cam_xpt.c: Add quirk entry for a Samsung drive that doesn't like experiencing the queue full condition. Bump the timeouts for all probe activities to 60s. We don't know what the seletion timeout (or equivelent on other mediums) is for controllers, which can make the transactions at the tail end of a parallel probe take a while to complete. The DPT seems to be a card that takes a long time to see a selection timeout. cam_periph.c: Don't call a device "gone" after a single selection timeout. We need to come up with a better policy. Until that time, you'll have to manually re-scan a bus via camcontrol for the system to decide that a device is really gone. This should give devices experiencing temporary insanity to escape death.
1998-09-20 07:14:36 +00:00
/*timeout*/60000);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
break;
}
case PROBE_INQUIRY:
{
struct scsi_inquiry_data *inq_buf;
inq_buf = &periph->path->device->inq_data;
/*
* If the device is currently configured, we calculate an
* MD5 checksum of the inquiry data, and if the serial number
* length is greater than 0, add the serial number data
* into the checksum as well. Once the inquiry and the
* serial number check finish, we attempt to figure out
* whether we still have the same device.
*/
if ((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0) {
MD5Init(&softc->context);
MD5Update(&softc->context, (unsigned char *)inq_buf,
sizeof(struct scsi_inquiry_data));
softc->flags |= PROBE_INQUIRY_CKSUM;
if (periph->path->device->serial_num_len > 0) {
MD5Update(&softc->context,
periph->path->device->serial_num,
periph->path->device->serial_num_len);
softc->flags |= PROBE_SERIAL_CKSUM;
}
MD5Final(softc->digest, &softc->context);
}
scsi_inquiry(csio,
/*retries*/4,
probedone,
MSG_SIMPLE_Q_TAG,
(u_int8_t *)inq_buf,
sizeof(*inq_buf),
/*evpd*/FALSE,
/*page_code*/0,
SSD_MIN_SIZE,
cam_xpt.c: Add quirk entry for a Samsung drive that doesn't like experiencing the queue full condition. Bump the timeouts for all probe activities to 60s. We don't know what the seletion timeout (or equivelent on other mediums) is for controllers, which can make the transactions at the tail end of a parallel probe take a while to complete. The DPT seems to be a card that takes a long time to see a selection timeout. cam_periph.c: Don't call a device "gone" after a single selection timeout. We need to come up with a better policy. Until that time, you'll have to manually re-scan a bus via camcontrol for the system to decide that a device is really gone. This should give devices experiencing temporary insanity to escape death.
1998-09-20 07:14:36 +00:00
/*timeout*/60 * 1000);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
break;
}
case PROBE_MODE_SENSE:
{
void *mode_buf;
int mode_buf_len;
mode_buf_len = sizeof(struct scsi_mode_header_6)
+ sizeof(struct scsi_mode_blk_desc)
+ sizeof(struct scsi_control_page);
mode_buf = malloc(mode_buf_len, M_TEMP, M_NOWAIT);
if (mode_buf != NULL) {
scsi_mode_sense(csio,
/*retries*/4,
probedone,
MSG_SIMPLE_Q_TAG,
/*dbd*/FALSE,
SMS_PAGE_CTRL_CURRENT,
SMS_CONTROL_MODE_PAGE,
mode_buf,
mode_buf_len,
SSD_FULL_SIZE,
cam_xpt.c: Add quirk entry for a Samsung drive that doesn't like experiencing the queue full condition. Bump the timeouts for all probe activities to 60s. We don't know what the seletion timeout (or equivelent on other mediums) is for controllers, which can make the transactions at the tail end of a parallel probe take a while to complete. The DPT seems to be a card that takes a long time to see a selection timeout. cam_periph.c: Don't call a device "gone" after a single selection timeout. We need to come up with a better policy. Until that time, you'll have to manually re-scan a bus via camcontrol for the system to decide that a device is really gone. This should give devices experiencing temporary insanity to escape death.
1998-09-20 07:14:36 +00:00
/*timeout*/60000);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
break;
}
xpt_print_path(periph->path);
printf("Unable to mode sense control page - malloc failure\n");
softc->action = PROBE_SERIAL_NUM;
/* FALLTHROUGH */
}
case PROBE_SERIAL_NUM:
{
struct scsi_vpd_unit_serial_number *serial_buf;
struct cam_ed* device;
serial_buf = NULL;
device = periph->path->device;
device->serial_num = NULL;
device->serial_num_len = 0;
if ((device->quirk->quirks & CAM_QUIRK_NOSERIAL) == 0)
serial_buf = (struct scsi_vpd_unit_serial_number *)
malloc(sizeof(*serial_buf), M_TEMP, M_NOWAIT);
if (serial_buf != NULL) {
bzero(serial_buf, sizeof(*serial_buf));
scsi_inquiry(csio,
/*retries*/4,
probedone,
MSG_SIMPLE_Q_TAG,
(u_int8_t *)serial_buf,
sizeof(*serial_buf),
/*evpd*/TRUE,
SVPD_UNIT_SERIAL_NUMBER,
SSD_MIN_SIZE,
cam_xpt.c: Add quirk entry for a Samsung drive that doesn't like experiencing the queue full condition. Bump the timeouts for all probe activities to 60s. We don't know what the seletion timeout (or equivelent on other mediums) is for controllers, which can make the transactions at the tail end of a parallel probe take a while to complete. The DPT seems to be a card that takes a long time to see a selection timeout. cam_periph.c: Don't call a device "gone" after a single selection timeout. We need to come up with a better policy. Until that time, you'll have to manually re-scan a bus via camcontrol for the system to decide that a device is really gone. This should give devices experiencing temporary insanity to escape death.
1998-09-20 07:14:36 +00:00
/*timeout*/60 * 1000);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
break;
}
/*
* We'll have to do without, let our probedone
* routine finish up for us.
*/
start_ccb->csio.data_ptr = NULL;
probedone(periph, start_ccb);
return;
}
}
xpt_action(start_ccb);
}
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
static void
proberequestdefaultnegotiation(struct cam_periph *periph)
{
struct ccb_trans_settings cts;
xpt_setup_ccb(&cts.ccb_h, periph->path, /*priority*/1);
cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
cts.flags = CCB_TRANS_USER_SETTINGS;
xpt_action((union ccb *)&cts);
cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
cts.flags &= ~CCB_TRANS_USER_SETTINGS;
cts.flags |= CCB_TRANS_CURRENT_SETTINGS;
xpt_action((union ccb *)&cts);
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static void
probedone(struct cam_periph *periph, union ccb *done_ccb)
{
probe_softc *softc;
struct cam_path *path;
u_int32_t priority;
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n"));
softc = (probe_softc *)periph->softc;
path = done_ccb->ccb_h.path;
priority = done_ccb->ccb_h.pinfo.priority;
switch (softc->action) {
case PROBE_TUR:
{
if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
if (cam_periph_error(done_ccb, 0,
SF_NO_PRINT, NULL) == ERESTART)
return;
else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
/* Don't wedge the queue */
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
xpt_release_devq(done_ccb->ccb_h.path,
/*count*/1,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*run_queue*/TRUE);
}
softc->action = PROBE_INQUIRY;
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
return;
}
case PROBE_INQUIRY:
{
if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
struct scsi_inquiry_data *inq_buf;
u_int8_t periph_qual;
u_int8_t periph_dtype;
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
inq_buf = &path->device->inq_data;
periph_qual = SID_QUAL(inq_buf);
periph_dtype = SID_TYPE(inq_buf);
if (periph_dtype != T_NODEVICE) {
switch(periph_qual) {
case SID_QUAL_LU_CONNECTED:
{
xpt_find_quirk(path->device);
if ((inq_buf->flags & SID_CmdQue) != 0)
softc->action =
PROBE_MODE_SENSE;
else
softc->action =
PROBE_SERIAL_NUM;
path->device->flags &=
~CAM_DEV_UNCONFIGURED;
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
return;
}
default:
break;
}
}
} else if (cam_periph_error(done_ccb, 0,
done_ccb->ccb_h.target_lun > 0
? SF_RETRY_UA|SF_QUIET_IR
: SF_RETRY_UA,
&softc->saved_ccb) == ERESTART) {
return;
} else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
/* Don't wedge the queue */
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*run_queue*/TRUE);
}
/*
* If we get to this point, we got an error status back
* from the inquiry and the error status doesn't require
* automatically retrying the command. Therefore, the
* inquiry failed. If we had inquiry information before
* for this device, but this latest inquiry command failed,
* the device has probably gone away. If this device isn't
* already marked unconfigured, notify the peripheral
* drivers that this device is no more.
*/
if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
/* Send the async notification. */
xpt_async(AC_LOST_DEVICE, path, NULL);
xpt_release_ccb(done_ccb);
break;
}
case PROBE_MODE_SENSE:
{
struct ccb_scsiio *csio;
struct scsi_mode_header_6 *mode_hdr;
csio = &done_ccb->csio;
mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr;
if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
struct scsi_control_page *page;
u_int8_t *offset;
offset = ((u_int8_t *)&mode_hdr[1])
+ mode_hdr->blk_desc_len;
page = (struct scsi_control_page *)offset;
path->device->queue_flags = page->queue_flags;
} else if (cam_periph_error(done_ccb, 0,
SF_RETRY_UA|SF_NO_PRINT,
&softc->saved_ccb) == ERESTART) {
return;
} else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
/* Don't wedge the queue */
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
xpt_release_devq(done_ccb->ccb_h.path,
/*count*/1, /*run_queue*/TRUE);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
xpt_release_ccb(done_ccb);
free(mode_hdr, M_TEMP);
softc->action = PROBE_SERIAL_NUM;
xpt_schedule(periph, priority);
return;
}
case PROBE_SERIAL_NUM:
{
struct ccb_scsiio *csio;
struct scsi_vpd_unit_serial_number *serial_buf;
u_int32_t priority;
int changed;
int have_serialnum;
changed = 1;
have_serialnum = 0;
csio = &done_ccb->csio;
priority = done_ccb->ccb_h.pinfo.priority;
serial_buf =
(struct scsi_vpd_unit_serial_number *)csio->data_ptr;
/* Clean up from previous instance of this device */
if (path->device->serial_num != NULL) {
free(path->device->serial_num, M_DEVBUF);
path->device->serial_num = NULL;
path->device->serial_num_len = 0;
}
if (serial_buf == NULL) {
/*
* Don't process the command as it was never sent
*/
} else if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP
Release bus entries in the EDT when a path is released. Null out path entries when the path is released to catch bugs. Free our configuration hook when we're done with it.
1999-04-23 23:25:48 +00:00
&& (serial_buf->length > 0)) {
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
have_serialnum = 1;
path->device->serial_num =
(u_int8_t *)malloc((serial_buf->length + 1),
M_DEVBUF, M_NOWAIT);
if (path->device->serial_num != NULL) {
bcopy(serial_buf->serial_num,
path->device->serial_num,
serial_buf->length);
path->device->serial_num_len =
serial_buf->length;
path->device->serial_num[serial_buf->length]
= '\0';
}
} else if (cam_periph_error(done_ccb, 0,
SF_RETRY_UA|SF_NO_PRINT,
&softc->saved_ccb) == ERESTART) {
return;
} else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
/* Don't wedge the queue */
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*run_queue*/TRUE);
}
/*
* Let's see if we have seen this device before.
*/
if ((softc->flags & PROBE_INQUIRY_CKSUM) != 0) {
MD5_CTX context;
u_int8_t digest[16];
MD5Init(&context);
MD5Update(&context,
(unsigned char *)&path->device->inq_data,
sizeof(struct scsi_inquiry_data));
if (have_serialnum)
MD5Update(&context, serial_buf->serial_num,
serial_buf->length);
MD5Final(digest, &context);
if (bcmp(softc->digest, digest, 16) == 0)
changed = 0;
/*
* XXX Do we need to do a TUR in order to ensure
* that the device really hasn't changed???
*/
if ((changed != 0)
&& ((softc->flags & PROBE_NO_ANNOUNCE) == 0))
xpt_async(AC_LOST_DEVICE, path, NULL);
}
if (serial_buf != NULL)
free(serial_buf, M_TEMP);
if (changed != 0) {
/*
* Now that we have all the necessary
* information to safely perform transfer
* negotiations... Controllers don't perform
* any negotiation or tagged queuing until
* after the first XPT_SET_TRAN_SETTINGS ccb is
* received. So, on a new device, just retreive
* the user settings, and set them as the current
* settings to set the device up.
*/
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
proberequestdefaultnegotiation(periph);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
xpt_release_ccb(done_ccb);
/*
* Perform a TUR to allow the controller to
* perform any necessary transfer negotiation.
*/
softc->action = PROBE_TUR_FOR_NEGOTIATION;
xpt_schedule(periph, priority);
return;
}
xpt_release_ccb(done_ccb);
break;
}
case PROBE_TUR_FOR_NEGOTIATION:
if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
/* Don't wedge the queue */
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*run_queue*/TRUE);
}
path->device->flags &= ~CAM_DEV_UNCONFIGURED;
if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
/* Inform the XPT that a new device has been found */
done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
xpt_action(done_ccb);
xpt_async(AC_FOUND_DEVICE, xpt_periph->path, done_ccb);
}
xpt_release_ccb(done_ccb);
break;
}
done_ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
TAILQ_REMOVE(&softc->request_ccbs, &done_ccb->ccb_h, periph_links.tqe);
done_ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(done_ccb);
if (TAILQ_FIRST(&softc->request_ccbs) == NULL) {
cam_periph_invalidate(periph);
cam_periph_release(periph);
} else {
probeschedule(periph);
}
}
static void
probecleanup(struct cam_periph *periph)
{
free(periph->softc, M_TEMP);
}
static void
xpt_find_quirk(struct cam_ed *device)
{
caddr_t match;
match = cam_quirkmatch((caddr_t)&device->inq_data,
(caddr_t)xpt_quirk_table,
sizeof(xpt_quirk_table)/sizeof(*xpt_quirk_table),
sizeof(*xpt_quirk_table), scsi_inquiry_match);
if (match == NULL)
panic("xpt_find_quirk: device didn't match wildcard entry!!");
device->quirk = (struct xpt_quirk_entry *)match;
}
static void
Correct problems with xpt_set_transfer_settings and async transfer negotiation changes with wildcarded paths.
1998-09-25 22:35:56 +00:00
xpt_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_ed *device,
int async_update)
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
{
struct cam_sim *sim;
int qfrozen;
sim = cts->ccb_h.path->bus->sim;
if (async_update == FALSE) {
struct scsi_inquiry_data *inq_data;
struct ccb_pathinq cpi;
Add a number of interrelated CAM feature enhancements and bug fixes. NOTE: These changes will require recompilation of any userland applications, like cdrecord, xmcd, etc., that use the CAM passthrough interface. A make world is recommended. camcontrol.[c8]: - We now support two new commands, "tags" and "negotiate". - The tags commands allows users to view the number of tagged openings for a device as well as a number of other related parameters, and it allows users to set tagged openings for a device. - The negotiate command allows users to enable and disable disconnection and tagged queueing, set sync rates, offsets and bus width. Note that not all of those features are available for all controllers. Only the adv, ahc, and ncr drivers fully support all of the features at this point. Some cards do not allow the setting of sync rates, offsets and the like, and some of the drivers don't have any facilities to do so. Some drivers, like the adw driver, only support enabling or disabling sync negotiation, but do not support setting sync rates. - new description in the camcontrol man page of how to format a disk - cleanup of the camcontrol inquiry command - add support in the 'devlist' command for skipping unconfigured devices if -v was not specified on the command line. - make use of the new base_transfer_speed in the path inquiry CCB. - fix CCB bzero cases cam_xpt.c, cam_sim.[ch], cam_ccb.h: - new flags on many CCB function codes to designate whether they're non-immediate, use a user-supplied CCB, and can only be passed from userland programs via the xpt device. Use these flags in the transport layer and pass driver to categorize CCBs. - new flag in the transport layer device matching code for device nodes that indicates whether a device is unconfigured - bump the CAM version from 0x10 to 0x11 - Change the CAM ioctls to use the version as their group code, so we can force users to recompile code even when the CCB size doesn't change. - add + fill in a new value in the path inquiry CCB, base_transfer_speed. Remove a corresponding field from the cam_sim structure, and add code to every SIM to set this field to the proper value. - Fix the set transfer settings code in the transport layer. scsi_cd.c: - make some variables volatile instead of just casting them in various places - fix a race condition in the changer code - attach unless we get a "logical unit not supported" error. This should fix all of the cases where people have devices that return weird errors when they don't have media in the drive. scsi_da.c: - attach unless we get a "logical unit not supported" error scsi_pass.c: - for immediate CCBs, just malloc a CCB to send the user request in. This gets rid of the 'held' count problem in camcontrol tags. scsi_pass.h: - change the CAM ioctls to use the CAM version as their group code. adv driver: - Allow changing the sync rate and offset separately. adw driver - Allow changing the sync rate and offset separately. aha driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. ahc driver: - Allow setting offset and sync rate separately bt driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. NCR driver: - Fix the ultra/ultra 2 negotiation bug - allow setting both the sync rate and offset separately Other HBA drivers: - Put code in to set the base_transfer_speed field for XPT_GET_TRAN_SETTINGS CCBs. Reviewed by: gibbs, mjacob (isp), imp (aha)
1999-05-06 20:16:39 +00:00
struct ccb_trans_settings cur_cts;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
Correct problems with xpt_set_transfer_settings and async transfer negotiation changes with wildcarded paths.
1998-09-25 22:35:56 +00:00
if (device == NULL) {
cts->ccb_h.status = CAM_PATH_INVALID;
xpt_done((union ccb *)cts);
return;
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*
* Perform sanity checking against what the
* controller and device can do.
*/
xpt_setup_ccb(&cpi.ccb_h, cts->ccb_h.path, /*priority*/1);
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
Add a number of interrelated CAM feature enhancements and bug fixes. NOTE: These changes will require recompilation of any userland applications, like cdrecord, xmcd, etc., that use the CAM passthrough interface. A make world is recommended. camcontrol.[c8]: - We now support two new commands, "tags" and "negotiate". - The tags commands allows users to view the number of tagged openings for a device as well as a number of other related parameters, and it allows users to set tagged openings for a device. - The negotiate command allows users to enable and disable disconnection and tagged queueing, set sync rates, offsets and bus width. Note that not all of those features are available for all controllers. Only the adv, ahc, and ncr drivers fully support all of the features at this point. Some cards do not allow the setting of sync rates, offsets and the like, and some of the drivers don't have any facilities to do so. Some drivers, like the adw driver, only support enabling or disabling sync negotiation, but do not support setting sync rates. - new description in the camcontrol man page of how to format a disk - cleanup of the camcontrol inquiry command - add support in the 'devlist' command for skipping unconfigured devices if -v was not specified on the command line. - make use of the new base_transfer_speed in the path inquiry CCB. - fix CCB bzero cases cam_xpt.c, cam_sim.[ch], cam_ccb.h: - new flags on many CCB function codes to designate whether they're non-immediate, use a user-supplied CCB, and can only be passed from userland programs via the xpt device. Use these flags in the transport layer and pass driver to categorize CCBs. - new flag in the transport layer device matching code for device nodes that indicates whether a device is unconfigured - bump the CAM version from 0x10 to 0x11 - Change the CAM ioctls to use the version as their group code, so we can force users to recompile code even when the CCB size doesn't change. - add + fill in a new value in the path inquiry CCB, base_transfer_speed. Remove a corresponding field from the cam_sim structure, and add code to every SIM to set this field to the proper value. - Fix the set transfer settings code in the transport layer. scsi_cd.c: - make some variables volatile instead of just casting them in various places - fix a race condition in the changer code - attach unless we get a "logical unit not supported" error. This should fix all of the cases where people have devices that return weird errors when they don't have media in the drive. scsi_da.c: - attach unless we get a "logical unit not supported" error scsi_pass.c: - for immediate CCBs, just malloc a CCB to send the user request in. This gets rid of the 'held' count problem in camcontrol tags. scsi_pass.h: - change the CAM ioctls to use the CAM version as their group code. adv driver: - Allow changing the sync rate and offset separately. adw driver - Allow changing the sync rate and offset separately. aha driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. ahc driver: - Allow setting offset and sync rate separately bt driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. NCR driver: - Fix the ultra/ultra 2 negotiation bug - allow setting both the sync rate and offset separately Other HBA drivers: - Put code in to set the base_transfer_speed field for XPT_GET_TRAN_SETTINGS CCBs. Reviewed by: gibbs, mjacob (isp), imp (aha)
1999-05-06 20:16:39 +00:00
xpt_setup_ccb(&cur_cts.ccb_h, cts->ccb_h.path, /*priority*/1);
cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
cur_cts.flags = CCB_TRANS_CURRENT_SETTINGS;
xpt_action((union ccb *)&cur_cts);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
inq_data = &device->inq_data;
Add a number of interrelated CAM feature enhancements and bug fixes. NOTE: These changes will require recompilation of any userland applications, like cdrecord, xmcd, etc., that use the CAM passthrough interface. A make world is recommended. camcontrol.[c8]: - We now support two new commands, "tags" and "negotiate". - The tags commands allows users to view the number of tagged openings for a device as well as a number of other related parameters, and it allows users to set tagged openings for a device. - The negotiate command allows users to enable and disable disconnection and tagged queueing, set sync rates, offsets and bus width. Note that not all of those features are available for all controllers. Only the adv, ahc, and ncr drivers fully support all of the features at this point. Some cards do not allow the setting of sync rates, offsets and the like, and some of the drivers don't have any facilities to do so. Some drivers, like the adw driver, only support enabling or disabling sync negotiation, but do not support setting sync rates. - new description in the camcontrol man page of how to format a disk - cleanup of the camcontrol inquiry command - add support in the 'devlist' command for skipping unconfigured devices if -v was not specified on the command line. - make use of the new base_transfer_speed in the path inquiry CCB. - fix CCB bzero cases cam_xpt.c, cam_sim.[ch], cam_ccb.h: - new flags on many CCB function codes to designate whether they're non-immediate, use a user-supplied CCB, and can only be passed from userland programs via the xpt device. Use these flags in the transport layer and pass driver to categorize CCBs. - new flag in the transport layer device matching code for device nodes that indicates whether a device is unconfigured - bump the CAM version from 0x10 to 0x11 - Change the CAM ioctls to use the version as their group code, so we can force users to recompile code even when the CCB size doesn't change. - add + fill in a new value in the path inquiry CCB, base_transfer_speed. Remove a corresponding field from the cam_sim structure, and add code to every SIM to set this field to the proper value. - Fix the set transfer settings code in the transport layer. scsi_cd.c: - make some variables volatile instead of just casting them in various places - fix a race condition in the changer code - attach unless we get a "logical unit not supported" error. This should fix all of the cases where people have devices that return weird errors when they don't have media in the drive. scsi_da.c: - attach unless we get a "logical unit not supported" error scsi_pass.c: - for immediate CCBs, just malloc a CCB to send the user request in. This gets rid of the 'held' count problem in camcontrol tags. scsi_pass.h: - change the CAM ioctls to use the CAM version as their group code. adv driver: - Allow changing the sync rate and offset separately. adw driver - Allow changing the sync rate and offset separately. aha driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. ahc driver: - Allow setting offset and sync rate separately bt driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. NCR driver: - Fix the ultra/ultra 2 negotiation bug - allow setting both the sync rate and offset separately Other HBA drivers: - Put code in to set the base_transfer_speed field for XPT_GET_TRAN_SETTINGS CCBs. Reviewed by: gibbs, mjacob (isp), imp (aha)
1999-05-06 20:16:39 +00:00
/* Fill in any gaps in what the user gave us */
if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) == 0)
cts->sync_period = cur_cts.sync_period;
if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) == 0)
cts->sync_offset = cur_cts.sync_offset;
if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) == 0)
cts->bus_width = cur_cts.bus_width;
if ((cts->valid & CCB_TRANS_DISC_VALID) == 0) {
cts->flags &= ~CCB_TRANS_DISC_ENB;
cts->flags |= cur_cts.flags & CCB_TRANS_DISC_ENB;
}
if ((cts->valid & CCB_TRANS_TQ_VALID) == 0) {
cts->flags &= ~CCB_TRANS_TAG_ENB;
cts->flags |= cur_cts.flags & CCB_TRANS_TAG_ENB;
}
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
&& (inq_data->flags & SID_Sync) == 0)
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
|| (cpi.hba_inquiry & PI_SDTR_ABLE) == 0) {
/* Force async */
cts->sync_period = 0;
cts->sync_offset = 0;
}
switch (cts->bus_width) {
case MSG_EXT_WDTR_BUS_32_BIT:
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
|| (inq_data->flags & SID_WBus32) != 0)
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
&& (cpi.hba_inquiry & PI_WIDE_32) != 0)
break;
/* Fall Through to 16-bit */
case MSG_EXT_WDTR_BUS_16_BIT:
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
|| (inq_data->flags & SID_WBus16) != 0)
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
&& (cpi.hba_inquiry & PI_WIDE_16) != 0) {
cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
break;
}
/* Fall Through to 8-bit */
default: /* New bus width?? */
case MSG_EXT_WDTR_BUS_8_BIT:
/* All targets can do this */
cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
break;
}
if ((cts->flags & CCB_TRANS_DISC_ENB) == 0) {
/*
* Can't tag queue without disconnection.
*/
cts->flags &= ~CCB_TRANS_TAG_ENB;
Add a quirk entry for the CFP2107, another drive with broken tagged queuing support. Ensure that we report that a device supports tagged queuing even if the system is waiting a "command count delay" before starting to use them. If a user disables disconnects on a device ensure that tagged queuing is also turned off. We did the right thing during initial configuration, but could be confused by manual changes.
1998-10-07 03:25:21 +00:00
cts->valid |= CCB_TRANS_TQ_VALID;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0
|| (inq_data->flags & SID_CmdQue) == 0
|| (device->queue_flags & SCP_QUEUE_DQUE) != 0
|| (device->quirk->mintags == 0)) {
/*
* Can't tag on hardware that doesn't support,
* doesn't have it enabled, or has broken tag support.
*/
cts->flags &= ~CCB_TRANS_TAG_ENB;
}
}
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
qfrozen = FALSE;
Remove camq_regen(). We already perform modular comparisons for generation counts, so no further steps to deal with generation count wrap are required. Fix an off by one problem in the camq heap code.
1999-04-07 22:57:48 +00:00
if ((cts->valid & CCB_TRANS_TQ_VALID) != 0
&& (async_update == FALSE)) {
Correct problems with xpt_set_transfer_settings and async transfer negotiation changes with wildcarded paths.
1998-09-25 22:35:56 +00:00
int device_tagenb;
Fix a few problems with the tag delay code: - Tagged devices were limited to one transaction (oops) - We revert to untagged with a tag delay if the user changed the transfer negotiation values (via perhaps camcontrol some day). - xpt_async did not use the expanded path in some cases which could cause a panic.
1998-09-24 22:43:54 +00:00
Correct problems with xpt_set_transfer_settings and async transfer negotiation changes with wildcarded paths.
1998-09-25 22:35:56 +00:00
/*
* If we are transitioning from tags to no-tags or
* vice-versa, we need to carefully freeze and restart
* the queue so that we don't overlap tagged and non-tagged
* commands. We also temporarily stop tags if there is
* a change in transfer negotiation settings to allow
* "tag-less" negotiation.
*/
if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
|| (device->inq_flags & SID_CmdQue) != 0)
device_tagenb = TRUE;
else
device_tagenb = FALSE;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
Correct problems with xpt_set_transfer_settings and async transfer negotiation changes with wildcarded paths.
1998-09-25 22:35:56 +00:00
if (((cts->flags & CCB_TRANS_TAG_ENB) != 0
&& device_tagenb == FALSE)
|| ((cts->flags & CCB_TRANS_TAG_ENB) == 0
&& device_tagenb == TRUE)) {
if ((cts->flags & CCB_TRANS_TAG_ENB) != 0) {
/*
* Delay change to use tags until after a
* few commands have gone to this device so
* the controller has time to perform transfer
* negotiations without tagged messages getting
* in the way.
*/
device->tag_delay_count = CAM_TAG_DELAY_COUNT;
device->flags |= CAM_DEV_TAG_AFTER_COUNT;
} else {
xpt_freeze_devq(cts->ccb_h.path, /*count*/1);
qfrozen = TRUE;
device->inq_flags &= ~SID_CmdQue;
xpt_dev_ccbq_resize(cts->ccb_h.path,
sim->max_dev_openings);
device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
device->tag_delay_count = 0;
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
}
Remove camq_regen(). We already perform modular comparisons for generation counts, so no further steps to deal with generation count wrap are required. Fix an off by one problem in the camq heap code.
1999-04-07 22:57:48 +00:00
if (async_update == FALSE) {
/*
* If we are currently performing tagged transactions to
* this device and want to change its negotiation parameters,
* go non-tagged for a bit to give the controller a chance to
* negotiate unhampered by tag messages.
*/
if ((device->inq_flags & SID_CmdQue) != 0
&& (cts->flags & (CCB_TRANS_SYNC_RATE_VALID|
CCB_TRANS_SYNC_OFFSET_VALID|
CCB_TRANS_BUS_WIDTH_VALID)) != 0)
xpt_toggle_tags(cts->ccb_h.path);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
(*(sim->sim_action))(sim, (union ccb *)cts);
Remove camq_regen(). We already perform modular comparisons for generation counts, so no further steps to deal with generation count wrap are required. Fix an off by one problem in the camq heap code.
1999-04-07 22:57:48 +00:00
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
if (qfrozen) {
struct ccb_relsim crs;
xpt_setup_ccb(&crs.ccb_h, cts->ccb_h.path,
/*priority*/1);
crs.ccb_h.func_code = XPT_REL_SIMQ;
crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
crs.openings
= crs.release_timeout
= crs.qfrozen_cnt
= 0;
xpt_action((union ccb *)&crs);
}
}
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
static void
Fix a few problems with the tag delay code: - Tagged devices were limited to one transaction (oops) - We revert to untagged with a tag delay if the user changed the transfer negotiation values (via perhaps camcontrol some day). - xpt_async did not use the expanded path in some cases which could cause a panic.
1998-09-24 22:43:54 +00:00
xpt_toggle_tags(struct cam_path *path)
{
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
struct cam_ed *dev;
Fix a few problems with the tag delay code: - Tagged devices were limited to one transaction (oops) - We revert to untagged with a tag delay if the user changed the transfer negotiation values (via perhaps camcontrol some day). - xpt_async did not use the expanded path in some cases which could cause a panic.
1998-09-24 22:43:54 +00:00
/*
* Give controllers a chance to renegotiate
* before starting tag operations. We
* "toggle" tagged queuing off then on
* which causes the tag enable command delay
* counter to come into effect.
*/
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
dev = path->device;
if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
|| ((dev->inq_flags & SID_CmdQue) != 0
&& (dev->inq_flags & (SID_Sync|SID_WBus16|SID_WBus32)) != 0)) {
Fix a few problems with the tag delay code: - Tagged devices were limited to one transaction (oops) - We revert to untagged with a tag delay if the user changed the transfer negotiation values (via perhaps camcontrol some day). - xpt_async did not use the expanded path in some cases which could cause a panic.
1998-09-24 22:43:54 +00:00
struct ccb_trans_settings cts;
xpt_setup_ccb(&cts.ccb_h, path, 1);
cts.flags = 0;
cts.valid = CCB_TRANS_TQ_VALID;
Correct problems with xpt_set_transfer_settings and async transfer negotiation changes with wildcarded paths.
1998-09-25 22:35:56 +00:00
xpt_set_transfer_settings(&cts, path->device,
/*async_update*/TRUE);
Fix a few problems with the tag delay code: - Tagged devices were limited to one transaction (oops) - We revert to untagged with a tag delay if the user changed the transfer negotiation values (via perhaps camcontrol some day). - xpt_async did not use the expanded path in some cases which could cause a panic.
1998-09-24 22:43:54 +00:00
cts.flags = CCB_TRANS_TAG_ENB;
Correct problems with xpt_set_transfer_settings and async transfer negotiation changes with wildcarded paths.
1998-09-25 22:35:56 +00:00
xpt_set_transfer_settings(&cts, path->device,
/*async_update*/TRUE);
Fix a few problems with the tag delay code: - Tagged devices were limited to one transaction (oops) - We revert to untagged with a tag delay if the user changed the transfer negotiation values (via perhaps camcontrol some day). - xpt_async did not use the expanded path in some cases which could cause a panic.
1998-09-24 22:43:54 +00:00
}
}
static void
xpt_start_tags(struct cam_path *path)
{
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
struct ccb_relsim crs;
struct cam_ed *device;
struct cam_sim *sim;
int newopenings;
device = path->device;
sim = path->bus->sim;
device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
xpt_freeze_devq(path, /*count*/1);
device->inq_flags |= SID_CmdQue;
newopenings = min(device->quirk->maxtags, sim->max_tagged_dev_openings);
Fix a few problems with the tag delay code: - Tagged devices were limited to one transaction (oops) - We revert to untagged with a tag delay if the user changed the transfer negotiation values (via perhaps camcontrol some day). - xpt_async did not use the expanded path in some cases which could cause a panic.
1998-09-24 22:43:54 +00:00
xpt_dev_ccbq_resize(path, newopenings);
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
xpt_setup_ccb(&crs.ccb_h, path, /*priority*/1);
crs.ccb_h.func_code = XPT_REL_SIMQ;
crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
crs.openings
= crs.release_timeout
= crs.qfrozen_cnt
= 0;
xpt_action((union ccb *)&crs);
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static int busses_to_config;
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
static int busses_to_reset;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
static int
xptconfigbuscountfunc(struct cam_eb *bus, void *arg)
{
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
if (bus->path_id != CAM_XPT_PATH_ID) {
struct cam_path path;
struct ccb_pathinq cpi;
int can_negotiate;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
busses_to_config++;
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
xpt_compile_path(&path, NULL, bus->path_id,
CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
can_negotiate = cpi.hba_inquiry;
can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE);
if ((cpi.hba_misc & PIM_NOBUSRESET) == 0
&& can_negotiate)
busses_to_reset++;
xpt_release_path(&path);
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
return(1);
}
static int
xptconfigfunc(struct cam_eb *bus, void *arg)
{
struct cam_path *path;
union ccb *work_ccb;
if (bus->path_id != CAM_XPT_PATH_ID) {
cam_status status;
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
int can_negotiate;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
work_ccb = xpt_alloc_ccb();
if ((status = xpt_create_path(&path, xpt_periph, bus->path_id,
CAM_TARGET_WILDCARD,
CAM_LUN_WILDCARD)) !=CAM_REQ_CMP){
printf("xptconfigfunc: xpt_create_path failed with "
"status %#x for bus %d\n", status, bus->path_id);
printf("xptconfigfunc: halting bus configuration\n");
xpt_free_ccb(work_ccb);
Expand the hba_misc fied in the Path Inquiry ccb to allow a controller driver to specify that it does not provide initiator services (PIM_NOINITIATOR) and that the initial bus reset for device probing should be avoided (PIM_NOBUSRESET). Modify the XPT layer to honor these flags.
1998-12-10 04:05:49 +00:00
busses_to_config--;
xpt_finishconfig(xpt_periph, NULL);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
return(0);
}
xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
Expand the hba_misc fied in the Path Inquiry ccb to allow a controller driver to specify that it does not provide initiator services (PIM_NOINITIATOR) and that the initial bus reset for device probing should be avoided (PIM_NOBUSRESET). Modify the XPT layer to honor these flags.
1998-12-10 04:05:49 +00:00
work_ccb->ccb_h.func_code = XPT_PATH_INQ;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
xpt_action(work_ccb);
Expand the hba_misc fied in the Path Inquiry ccb to allow a controller driver to specify that it does not provide initiator services (PIM_NOINITIATOR) and that the initial bus reset for device probing should be avoided (PIM_NOBUSRESET). Modify the XPT layer to honor these flags.
1998-12-10 04:05:49 +00:00
if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
printf("xptconfigfunc: CPI failed on bus %d "
"with status %d\n", bus->path_id,
work_ccb->ccb_h.status);
xpt_finishconfig(xpt_periph, work_ccb);
return(1);
}
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
can_negotiate = work_ccb->cpi.hba_inquiry;
can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE);
if ((work_ccb->cpi.hba_misc & PIM_NOBUSRESET) == 0
&& (can_negotiate != 0)) {
Expand the hba_misc fied in the Path Inquiry ccb to allow a controller driver to specify that it does not provide initiator services (PIM_NOINITIATOR) and that the initial bus reset for device probing should be avoided (PIM_NOBUSRESET). Modify the XPT layer to honor these flags.
1998-12-10 04:05:49 +00:00
xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
work_ccb->ccb_h.func_code = XPT_RESET_BUS;
work_ccb->ccb_h.cbfcnp = NULL;
CAM_DEBUG(path, CAM_DEBUG_SUBTRACE,
("Resetting Bus\n"));
xpt_action(work_ccb);
xpt_finishconfig(xpt_periph, work_ccb);
} else {
/* Act as though we performed a successful BUS RESET */
work_ccb->ccb_h.func_code = XPT_RESET_BUS;
xpt_finishconfig(xpt_periph, work_ccb);
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
return(1);
}
static void
xpt_config(void *arg)
{
/* Now that interrupts are enabled, go find our devices */
#ifdef CAMDEBUG
/* Setup debugging flags and path */
#ifdef CAM_DEBUG_FLAGS
cam_dflags = CAM_DEBUG_FLAGS;
#else /* !CAM_DEBUG_FLAGS */
cam_dflags = CAM_DEBUG_NONE;
#endif /* CAM_DEBUG_FLAGS */
#ifdef CAM_DEBUG_BUS
if (cam_dflags != CAM_DEBUG_NONE) {
if (xpt_create_path(&cam_dpath, xpt_periph,
CAM_DEBUG_BUS, CAM_DEBUG_TARGET,
CAM_DEBUG_LUN) != CAM_REQ_CMP) {
printf("xpt_config: xpt_create_path() failed for debug"
" target %d:%d:%d, debugging disabled\n",
CAM_DEBUG_BUS, CAM_DEBUG_TARGET, CAM_DEBUG_LUN);
cam_dflags = CAM_DEBUG_NONE;
}
} else
cam_dpath = NULL;
#else /* !CAM_DEBUG_BUS */
cam_dpath = NULL;
#endif /* CAM_DEBUG_BUS */
#endif /* CAMDEBUG */
Protect access to the EDT with splcam() to protect against corruption caused by temporary EDT allocations performed by controller drivers in their interrupt routiens. Reference count bus entries in the EDT in preparation for support for dynamic controller arrival and departure. Have children of the EDT hold references to their parents. Correct routing of the XPT_IMMED_NOTIFY ccb type for use in target mode applications. Fix a few cases where the generation count for EDT data members was not being updated when a modification occurred. splcam() problem Noticed by: Tor Egge <tegge@FreeBSD.org>
1999-03-05 23:18:16 +00:00
/*
* Scan all installed busses.
*/
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
xpt_for_all_busses(xptconfigbuscountfunc, NULL);
Only deregister out configuration hook manually if there are no SCSI busses to configure.
1998-09-20 05:03:34 +00:00
if (busses_to_config == 0) {
/* Call manually because we don't have any busses */
xpt_finishconfig(xpt_periph, NULL);
If the bus delay is >= 2 seconds, notify the user that we are waiting for devices to settle. This will hopefully allay any 'first installation' fears that the machine has hung.
1998-10-10 21:10:36 +00:00
} else {
Add the XPT_PATH_STATS and XPT_GDEV_STATS function codes. These ccb types allow the reporting of error counts and other statistics. Currently we provide information on the last BDR or bus reset as well as active transaction inforamtion, but this will be expanded as more information is added to aid in error recovery. Use the 'last reset' information to better handle bus settle delays. Peripheral drivers now control whether a bus settle delay occurs and for how long. This allows target mode peripheral drivers to avoid having their device queue frozen by the XPT for what shoudl only be initiator type behavior. Don't perform a bus reset if the target device is incapable of performing transfer negotiation (e.g. Fiber Channel). If we don't perform a bus reset but the controller is capable of transfer negotiations, force negotiations on the first transaction to go to the device. This ensures that we aren't tripped up by a left over negotiation from the prom, BIOS, loader, etc. Add a default async handler funstion to cam_periph.c to remove duplicated code in all initiator type peripheral drivers. Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
1999-05-22 21:58:47 +00:00
if (busses_to_reset > 0 && SCSI_DELAY >= 2000) {
If the bus delay is >= 2 seconds, notify the user that we are waiting for devices to settle. This will hopefully allay any 'first installation' fears that the machine has hung.
1998-10-10 21:10:36 +00:00
printf("Waiting %d seconds for SCSI "
"devices to settle\n", SCSI_DELAY/1000);
}
Only deregister out configuration hook manually if there are no SCSI busses to configure.
1998-09-20 05:03:34 +00:00
xpt_for_all_busses(xptconfigfunc, NULL);
If the bus delay is >= 2 seconds, notify the user that we are waiting for devices to settle. This will hopefully allay any 'first installation' fears that the machine has hung.
1998-10-10 21:10:36 +00:00
}
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
/*
* If the given device only has one peripheral attached to it, and if that
* peripheral is the passthrough driver, announce it. This insures that the
* user sees some sort of announcement for every peripheral in their system.
*/
static int
xptpassannouncefunc(struct cam_ed *device, void *arg)
{
struct cam_periph *periph;
int i;
for (periph = SLIST_FIRST(&device->periphs), i = 0; periph != NULL;
periph = SLIST_NEXT(periph, periph_links), i++);
periph = SLIST_FIRST(&device->periphs);
if ((i == 1)
&& (strncmp(periph->periph_name, "pass", 4) == 0))
xpt_announce_periph(periph, NULL);
return(1);
}
static void
xpt_finishconfig(struct cam_periph *periph, union ccb *done_ccb)
{
struct periph_driver **p_drv;
int i;
if (done_ccb != NULL) {
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE,
("xpt_finishconfig\n"));
switch(done_ccb->ccb_h.func_code) {
case XPT_RESET_BUS:
if (done_ccb->ccb_h.status == CAM_REQ_CMP) {
done_ccb->ccb_h.func_code = XPT_SCAN_BUS;
done_ccb->ccb_h.cbfcnp = xpt_finishconfig;
xpt_action(done_ccb);
return;
}
/* FALLTHROUGH */
case XPT_SCAN_BUS:
Expand the hba_misc fied in the Path Inquiry ccb to allow a controller driver to specify that it does not provide initiator services (PIM_NOINITIATOR) and that the initial bus reset for device probing should be avoided (PIM_NOBUSRESET). Modify the XPT layer to honor these flags.
1998-12-10 04:05:49 +00:00
default:
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
xpt_free_path(done_ccb->ccb_h.path);
busses_to_config--;
break;
}
}
if (busses_to_config == 0) {
/* Register all the peripheral drivers */
Well folks, this is it - The second stage of the removal for build support for LKM's..
1999-04-17 08:36:07 +00:00
/* XXX This will have to change when we have loadable modules */
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
p_drv = (struct periph_driver **)periphdriver_set.ls_items;
for (i = 0; p_drv[i] != NULL; i++) {
(*p_drv[i]->init)();
}
/*
* Check for devices with no "standard" peripheral driver
* attached. For any devices like that, announce the
* passthrough driver so the user will see something.
*/
xpt_for_all_devices(xptpassannouncefunc, NULL);
/* Release our hook so that the boot can continue. */
config_intrhook_disestablish(xpt_config_hook);
Release bus entries in the EDT when a path is released. Null out path entries when the path is released to catch bugs. Free our configuration hook when we're done with it.
1999-04-23 23:25:48 +00:00
free(xpt_config_hook, M_TEMP);
xpt_config_hook = NULL;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
if (done_ccb != NULL)
xpt_free_ccb(done_ccb);
}
static void
xptaction(struct cam_sim *sim, union ccb *work_ccb)
{
CAM_DEBUG(work_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xptaction\n"));
switch (work_ccb->ccb_h.func_code) {
/* Common cases first */
case XPT_PATH_INQ: /* Path routing inquiry */
{
struct ccb_pathinq *cpi;
cpi = &work_ccb->cpi;
cpi->version_num = 1; /* XXX??? */
cpi->hba_inquiry = 0;
cpi->target_sprt = 0;
cpi->hba_misc = 0;
cpi->hba_eng_cnt = 0;
cpi->max_target = 0;
cpi->max_lun = 0;
cpi->initiator_id = 0;
strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
strncpy(cpi->hba_vid, "", HBA_IDLEN);
strncpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
cpi->unit_number = sim->unit_number;
cpi->bus_id = sim->bus_id;
Add a number of interrelated CAM feature enhancements and bug fixes. NOTE: These changes will require recompilation of any userland applications, like cdrecord, xmcd, etc., that use the CAM passthrough interface. A make world is recommended. camcontrol.[c8]: - We now support two new commands, "tags" and "negotiate". - The tags commands allows users to view the number of tagged openings for a device as well as a number of other related parameters, and it allows users to set tagged openings for a device. - The negotiate command allows users to enable and disable disconnection and tagged queueing, set sync rates, offsets and bus width. Note that not all of those features are available for all controllers. Only the adv, ahc, and ncr drivers fully support all of the features at this point. Some cards do not allow the setting of sync rates, offsets and the like, and some of the drivers don't have any facilities to do so. Some drivers, like the adw driver, only support enabling or disabling sync negotiation, but do not support setting sync rates. - new description in the camcontrol man page of how to format a disk - cleanup of the camcontrol inquiry command - add support in the 'devlist' command for skipping unconfigured devices if -v was not specified on the command line. - make use of the new base_transfer_speed in the path inquiry CCB. - fix CCB bzero cases cam_xpt.c, cam_sim.[ch], cam_ccb.h: - new flags on many CCB function codes to designate whether they're non-immediate, use a user-supplied CCB, and can only be passed from userland programs via the xpt device. Use these flags in the transport layer and pass driver to categorize CCBs. - new flag in the transport layer device matching code for device nodes that indicates whether a device is unconfigured - bump the CAM version from 0x10 to 0x11 - Change the CAM ioctls to use the version as their group code, so we can force users to recompile code even when the CCB size doesn't change. - add + fill in a new value in the path inquiry CCB, base_transfer_speed. Remove a corresponding field from the cam_sim structure, and add code to every SIM to set this field to the proper value. - Fix the set transfer settings code in the transport layer. scsi_cd.c: - make some variables volatile instead of just casting them in various places - fix a race condition in the changer code - attach unless we get a "logical unit not supported" error. This should fix all of the cases where people have devices that return weird errors when they don't have media in the drive. scsi_da.c: - attach unless we get a "logical unit not supported" error scsi_pass.c: - for immediate CCBs, just malloc a CCB to send the user request in. This gets rid of the 'held' count problem in camcontrol tags. scsi_pass.h: - change the CAM ioctls to use the CAM version as their group code. adv driver: - Allow changing the sync rate and offset separately. adw driver - Allow changing the sync rate and offset separately. aha driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. ahc driver: - Allow setting offset and sync rate separately bt driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. NCR driver: - Fix the ultra/ultra 2 negotiation bug - allow setting both the sync rate and offset separately Other HBA drivers: - Put code in to set the base_transfer_speed field for XPT_GET_TRAN_SETTINGS CCBs. Reviewed by: gibbs, mjacob (isp), imp (aha)
1999-05-06 20:16:39 +00:00
cpi->base_transfer_speed = 0;
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
cpi->ccb_h.status = CAM_REQ_CMP;
xpt_done(work_ccb);
break;
}
default:
work_ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(work_ccb);
break;
}
}
/*
* Should only be called by the machine interrupt dispatch routines,
* so put these prototypes here instead of in the header.
*/
a more correct change that should meet the sniff test
1998-12-24 06:01:15 +00:00
static void
swi_camnet(void)
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
{
camisr(&cam_netq);
}
a more correct change that should meet the sniff test
1998-12-24 06:01:15 +00:00
static void
swi_cambio(void)
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
{
camisr(&cam_bioq);
}
static void
camisr(cam_isrq_t *queue)
{
int s;
struct ccb_hdr *ccb_h;
s = splcam();
while ((ccb_h = TAILQ_FIRST(queue)) != NULL) {
int runq;
TAILQ_REMOVE(queue, ccb_h, sim_links.tqe);
ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
splx(s);
CAM_DEBUG(ccb_h->path, CAM_DEBUG_TRACE,
("camisr"));
runq = FALSE;
if (ccb_h->flags & CAM_HIGH_POWER) {
struct highpowerlist *hphead;
struct cam_ed *device;
union ccb *send_ccb;
hphead = &highpowerq;
send_ccb = (union ccb *)STAILQ_FIRST(hphead);
/*
* Increment the count since this command is done.
*/
num_highpower++;
/*
* Any high powered commands queued up?
*/
if (send_ccb != NULL) {
device = send_ccb->ccb_h.path->device;
STAILQ_REMOVE_HEAD(hphead, xpt_links.stqe);
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
xpt_release_devq(send_ccb->ccb_h.path,
/*count*/1, /*runqueue*/TRUE);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
}
}
Add a number of interrelated CAM feature enhancements and bug fixes. NOTE: These changes will require recompilation of any userland applications, like cdrecord, xmcd, etc., that use the CAM passthrough interface. A make world is recommended. camcontrol.[c8]: - We now support two new commands, "tags" and "negotiate". - The tags commands allows users to view the number of tagged openings for a device as well as a number of other related parameters, and it allows users to set tagged openings for a device. - The negotiate command allows users to enable and disable disconnection and tagged queueing, set sync rates, offsets and bus width. Note that not all of those features are available for all controllers. Only the adv, ahc, and ncr drivers fully support all of the features at this point. Some cards do not allow the setting of sync rates, offsets and the like, and some of the drivers don't have any facilities to do so. Some drivers, like the adw driver, only support enabling or disabling sync negotiation, but do not support setting sync rates. - new description in the camcontrol man page of how to format a disk - cleanup of the camcontrol inquiry command - add support in the 'devlist' command for skipping unconfigured devices if -v was not specified on the command line. - make use of the new base_transfer_speed in the path inquiry CCB. - fix CCB bzero cases cam_xpt.c, cam_sim.[ch], cam_ccb.h: - new flags on many CCB function codes to designate whether they're non-immediate, use a user-supplied CCB, and can only be passed from userland programs via the xpt device. Use these flags in the transport layer and pass driver to categorize CCBs. - new flag in the transport layer device matching code for device nodes that indicates whether a device is unconfigured - bump the CAM version from 0x10 to 0x11 - Change the CAM ioctls to use the version as their group code, so we can force users to recompile code even when the CCB size doesn't change. - add + fill in a new value in the path inquiry CCB, base_transfer_speed. Remove a corresponding field from the cam_sim structure, and add code to every SIM to set this field to the proper value. - Fix the set transfer settings code in the transport layer. scsi_cd.c: - make some variables volatile instead of just casting them in various places - fix a race condition in the changer code - attach unless we get a "logical unit not supported" error. This should fix all of the cases where people have devices that return weird errors when they don't have media in the drive. scsi_da.c: - attach unless we get a "logical unit not supported" error scsi_pass.c: - for immediate CCBs, just malloc a CCB to send the user request in. This gets rid of the 'held' count problem in camcontrol tags. scsi_pass.h: - change the CAM ioctls to use the CAM version as their group code. adv driver: - Allow changing the sync rate and offset separately. adw driver - Allow changing the sync rate and offset separately. aha driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. ahc driver: - Allow setting offset and sync rate separately bt driver: - Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs. NCR driver: - Fix the ultra/ultra 2 negotiation bug - allow setting both the sync rate and offset separately Other HBA drivers: - Put code in to set the base_transfer_speed field for XPT_GET_TRAN_SETTINGS CCBs. Reviewed by: gibbs, mjacob (isp), imp (aha)
1999-05-06 20:16:39 +00:00
if ((ccb_h->func_code & XPT_FC_USER_CCB) == 0) {
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
struct cam_ed *dev;
dev = ccb_h->path->device;
s = splcam();
cam_ccbq_ccb_done(&dev->ccbq, (union ccb *)ccb_h);
ccb_h->path->bus->sim->devq->send_active--;
ccb_h->path->bus->sim->devq->send_openings++;
splx(s);
if ((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0
|| ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
&& (dev->ccbq.dev_active == 0))) {
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
xpt_release_devq(ccb_h->path, /*count*/1,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*run_queue*/TRUE);
}
Allow 5 untagged commands to go to a device before enabling tags after enabling transfer negotiations, a BDR, or a bus reset to allow the controller driver to negotiate without tagged messages getting in the way. Some devices are confused by attempts to negotiate and tag at the same time. Some controllers (e.g. BT MultiMaster with certain firmware revs) will never negotiate if you don't give them an untagged "window" to perform negotiation in. Bump the maximum tag count to 255. The system reclaims unused tag space as the tag count is dropped anyway, so we might as well try the max. We should probably use a larger type than u_int8_t to hold our tag value as SCSI over certain mediums allows for higher values. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-09-23 03:03:19 +00:00
if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
&& (--dev->tag_delay_count == 0))
xpt_start_tags(ccb_h->path);
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
if ((dev->ccbq.queue.entries > 0)
&& (dev->qfrozen_cnt == 0)
&& (device_is_send_queued(dev) == 0)) {
runq = xpt_schedule_dev_sendq(ccb_h->path->bus,
dev);
}
}
if (ccb_h->status & CAM_RELEASE_SIMQ) {
xpt_release_simq(ccb_h->path->bus->sim,
/*run_queue*/TRUE);
} else if ((ccb_h->flags & CAM_DEV_QFRZDIS)
&& (ccb_h->status & CAM_DEV_QFRZN)) {
Implement the guts of the XPT_ABORT function code. Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just as we do for XPT_SCSI_IO calls. Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by allowing the caller to decrement the count more than once per call. Change the semantics of xpt_path_cmp to return 1 for a match with a wildcard from path1 and 2 for a match with wildcards from path2. This change doesn't affect most callers as they only check for >=0 (exact match or one containing a wildcard). When cleaning up a device node, ensure that there are no timeouts outstanding that reference it.
1999-08-16 22:22:41 +00:00
xpt_release_devq(ccb_h->path, /*count*/1,
CAM Transport Layer (XPT). Submitted by: The CAM Team
1998-09-15 06:33:23 +00:00
/*run_queue*/TRUE);
ccb_h->status &= ~CAM_DEV_QFRZN;
} else if (runq) {
xpt_run_dev_sendq(ccb_h->path->bus);
}
/* Call the peripheral driver's callback */
(*ccb_h->cbfcnp)(ccb_h->path->periph,
(union ccb *)ccb_h);
/* Raise IPL for while test */
s = splcam();
}
splx(s);
}
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