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freebsd-nq/sys/cam/scsi/scsi_xpt.c
Kenneth D. Merry 9fb7b3949c Fix a bug in the CAM SCSI probe code that caused changes in inquiry 
data to go undetected.

The probe code does an MD5 checksum of the inquiry data (and page
0x80 serial number if available) before doing a reprobe of an
existing device, and then compares a checksum after the probe to
see whether the device has changed.

This check was broken in January, 2000 by change 56146 when the extended
inquiry probe code was added.

In the extended inquiry probe case, it was calculating the checksum
a second time.  The second time it included the updated inquiry
data from the short inquiry probe (first 36 bytes).  So it wouldn't
catch cases where the vendor, product, revision, etc. changed.

This change will have the effect that when a device's inquiry data is
updated and a rescan is issued, it will disappear and then reappear.
This is the appropriate action, because if the inquiry data or serial
number changes, it is either a different device or the device
configuration may have changed significantly.  (e.g. with updated
firmware.)

scsi_xpt.c:	Don't calculate the initial MD5 checksum on
		standard inquiry data and the page 0x80 serial
		number if we have already calculated it.

MFC after:	1 week
Sponsored by:	Spectra Logic
2015-01-08 16:27:56 +00:00

2997 lines
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/*-
* Implementation of the SCSI Transport
*
* Copyright (c) 1997, 1998, 1999 Justin T. Gibbs.
* Copyright (c) 1997, 1998, 1999 Kenneth D. Merry.
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/systm.h>
#include <sys/types.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/time.h>
#include <sys/conf.h>
#include <sys/fcntl.h>
#include <sys/md5.h>
#include <sys/interrupt.h>
#include <sys/sbuf.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/sysctl.h>
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_queue.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_xpt_internal.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 <machine/stdarg.h> /* for xpt_print below */
#include "opt_cam.h"
struct scsi_quirk_entry {
struct scsi_inquiry_pattern inq_pat;
u_int8_t quirks;
#define CAM_QUIRK_NOLUNS 0x01
#define CAM_QUIRK_NOVPDS 0x02
#define CAM_QUIRK_HILUNS 0x04
#define CAM_QUIRK_NOHILUNS 0x08
#define CAM_QUIRK_NORPTLUNS 0x10
u_int mintags;
u_int maxtags;
};
#define SCSI_QUIRK(dev) ((struct scsi_quirk_entry *)((dev)->quirk))
static int cam_srch_hi = 0;
static int sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS);
SYSCTL_PROC(_kern_cam, OID_AUTO, cam_srch_hi, CTLTYPE_INT | CTLFLAG_RWTUN, 0, 0,
sysctl_cam_search_luns, "I",
"allow search above LUN 7 for SCSI3 and greater devices");
#define CAM_SCSI2_MAXLUN 8
#define CAM_CAN_GET_SIMPLE_LUN(x, i) \
((((x)->luns[i].lundata[0] & RPL_LUNDATA_ATYP_MASK) == \
RPL_LUNDATA_ATYP_PERIPH) || \
(((x)->luns[i].lundata[0] & RPL_LUNDATA_ATYP_MASK) == \
RPL_LUNDATA_ATYP_FLAT))
#define CAM_GET_SIMPLE_LUN(lp, i, lval) \
if (((lp)->luns[(i)].lundata[0] & RPL_LUNDATA_ATYP_MASK) == \
RPL_LUNDATA_ATYP_PERIPH) { \
(lval) = (lp)->luns[(i)].lundata[1]; \
} else { \
(lval) = (lp)->luns[(i)].lundata[0]; \
(lval) &= RPL_LUNDATA_FLAT_LUN_MASK; \
(lval) <<= 8; \
(lval) |= (lp)->luns[(i)].lundata[1]; \
}
#define CAM_GET_LUN(lp, i, lval) \
(lval) = scsi_8btou64((lp)->luns[(i)].lundata); \
(lval) = CAM_EXTLUN_BYTE_SWIZZLE(lval);
/*
* If we're not quirked to search <= the first 8 luns
* and we are either quirked to search above lun 8,
* or we're > SCSI-2 and we've enabled hilun searching,
* or we're > SCSI-2 and the last lun was a success,
* we can look for luns above lun 8.
*/
#define CAN_SRCH_HI_SPARSE(dv) \
(((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_NOHILUNS) == 0) \
&& ((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_HILUNS) \
|| (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2 && cam_srch_hi)))
#define CAN_SRCH_HI_DENSE(dv) \
(((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_NOHILUNS) == 0) \
&& ((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_HILUNS) \
|| (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2)))
static periph_init_t probe_periph_init;
static struct periph_driver probe_driver =
{
probe_periph_init, "probe",
TAILQ_HEAD_INITIALIZER(probe_driver.units), /* generation */ 0,
CAM_PERIPH_DRV_EARLY
};
PERIPHDRIVER_DECLARE(probe, probe_driver);
typedef enum {
PROBE_TUR,
PROBE_INQUIRY, /* this counts as DV0 for Basic Domain Validation */
PROBE_FULL_INQUIRY,
PROBE_REPORT_LUNS,
PROBE_MODE_SENSE,
PROBE_SUPPORTED_VPD_LIST,
PROBE_DEVICE_ID,
PROBE_SERIAL_NUM,
PROBE_TUR_FOR_NEGOTIATION,
PROBE_INQUIRY_BASIC_DV1,
PROBE_INQUIRY_BASIC_DV2,
PROBE_DV_EXIT,
PROBE_DONE,
PROBE_INVALID
} probe_action;
static char *probe_action_text[] = {
"PROBE_TUR",
"PROBE_INQUIRY",
"PROBE_FULL_INQUIRY",
"PROBE_REPORT_LUNS",
"PROBE_MODE_SENSE",
"PROBE_SUPPORTED_VPD_LIST",
"PROBE_DEVICE_ID",
"PROBE_SERIAL_NUM",
"PROBE_TUR_FOR_NEGOTIATION",
"PROBE_INQUIRY_BASIC_DV1",
"PROBE_INQUIRY_BASIC_DV2",
"PROBE_DV_EXIT",
"PROBE_DONE",
"PROBE_INVALID"
};
#define PROBE_SET_ACTION(softc, newaction) \
do { \
char **text; \
text = probe_action_text; \
CAM_DEBUG((softc)->periph->path, CAM_DEBUG_PROBE, \
("Probe %s to %s\n", text[(softc)->action], \
text[(newaction)])); \
(softc)->action = (newaction); \
} while(0)
typedef enum {
PROBE_INQUIRY_CKSUM = 0x01,
PROBE_SERIAL_CKSUM = 0x02,
PROBE_NO_ANNOUNCE = 0x04,
PROBE_EXTLUN = 0x08
} 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];
struct cam_periph *periph;
} probe_softc;
static const char quantum[] = "QUANTUM";
static const char sony[] = "SONY";
static const char west_digital[] = "WDIGTL";
static const char samsung[] = "SAMSUNG";
static const char seagate[] = "SEAGATE";
static const char microp[] = "MICROP";
static struct scsi_quirk_entry scsi_quirk_table[] =
{
{
/* Reports QUEUE FULL for temporary resource shortages */
{ T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP39100*", "*" },
/*quirks*/0, /*mintags*/24, /*maxtags*/32
},
{
/* Reports QUEUE FULL for temporary resource shortages */
{ 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*", "*" },
/*quirks*/0, /*mintags*/24, /*maxtags*/32
},
{
/* Broken tagged queuing drive */
{ T_DIRECT, SIP_MEDIA_FIXED, microp, "4421-07*", "*" },
/*quirks*/0, /*mintags*/0, /*maxtags*/0
},
{
/* Broken tagged queuing drive */
{ T_DIRECT, SIP_MEDIA_FIXED, "HP", "C372*", "*" },
/*quirks*/0, /*mintags*/0, /*maxtags*/0
},
{
/* Broken tagged queuing drive */
{ T_DIRECT, SIP_MEDIA_FIXED, microp, "3391*", "x43h" },
/*quirks*/0, /*mintags*/0, /*maxtags*/0
},
{
/*
* 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
},
{
/*
* 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
},
{
/*
* Broken tagged queuing drive
* Reported by: Bret Ford <bford@uop.cs.uop.edu>
* and: Martin Renters <martin@tdc.on.ca>
*/
{ T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST410800*", "71*" },
/*quirks*/0, /*mintags*/0, /*maxtags*/0
},
/*
* The Seagate Medalist Pro drives have very poor write
* performance with anything more than 2 tags.
*
* Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
* Drive: <SEAGATE ST36530N 1444>
*
* 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.
*/
{
{ T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST34520*", "*"},
/*quirks*/0, /*mintags*/2, /*maxtags*/2
},
{
{ T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST36530*", "*"},
/*quirks*/0, /*mintags*/2, /*maxtags*/2
},
{
{ T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"},
/*quirks*/0, /*mintags*/2, /*maxtags*/2
},
{
/*
* Experiences command timeouts under load with a
* tag count higher than 55.
*/
{ T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST3146855LW", "*"},
/*quirks*/0, /*mintags*/2, /*maxtags*/55
},
{
/*
* 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
},
{
/* Broken tagged queuing drive */
{ T_DIRECT, SIP_MEDIA_REMOVABLE, "iomega", "jaz*", "*" },
/*quirks*/0, /*mintags*/0, /*maxtags*/0
},
{
/* Broken tagged queuing drive */
{ T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CFP2107*", "*" },
/*quirks*/0, /*mintags*/0, /*maxtags*/0
},
{
/* This does not support other than LUN 0 */
{ T_DIRECT, SIP_MEDIA_FIXED, "VMware*", "*", "*" },
CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
},
{
/*
* 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
},
{
/*
* Slow when tagged queueing is enabled. (1.5MB/sec versus
* 8MB/sec.)
* Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
* Best performance with these drives is achieved with
* tagged queueing turned off, and write caching turned on.
*/
{ 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>
* Best performance with these drives is achieved with
* tagged queueing turned off, and write caching turned on.
*/
{ T_DIRECT, SIP_MEDIA_FIXED, west_digital, "ENTERPRISE", "*" },
/*quirks*/0, /*mintags*/0, /*maxtags*/0
},
{
/*
* Doesn't handle queue full condition correctly,
* so we need to limit maxtags to what the device
* can handle instead of determining this automatically.
*/
{ T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN321010S*", "*" },
/*quirks*/0, /*mintags*/2, /*maxtags*/32
},
{
/* Really only one LUN */
{ T_ENCLOSURE, SIP_MEDIA_FIXED, "SUN", "SENA", "*" },
CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
},
{
/* I can't believe we need a quirk for DPT volumes. */
{ T_ANY, SIP_MEDIA_FIXED|SIP_MEDIA_REMOVABLE, "DPT", "*", "*" },
CAM_QUIRK_NOLUNS,
/*mintags*/0, /*maxtags*/255
},
{
/*
* Many Sony CDROM drives don't like multi-LUN probing.
*/
{ T_CDROM, SIP_MEDIA_REMOVABLE, sony, "CD-ROM CDU*", "*" },
CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
},
{
/*
* This drive doesn't like multiple LUN probing.
* Submitted by: Parag Patel <parag@cgt.com>
*/
{ T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R CDU9*", "*" },
CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
},
{
{ T_WORM, SIP_MEDIA_REMOVABLE, "YAMAHA", "CDR100*", "*" },
CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
},
{
/*
* 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_NOLUNS, /*mintags*/0, /*maxtags*/0
},
{
/*
* Let's try the same as above, but for a drive that says
* it's an IPL-6860 but is actually an EXB 8200.
*/
{
T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
"IPL-6860*", "*"
},
CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
},
{
/*
* These Hitachi drives don't like multi-lun probing.
* The PR submitter has a DK319H, but says that the Linux
* kernel has a similar work-around for the DK312 and DK314,
* so all DK31* drives are quirked here.
* PR: misc/18793
* Submitted by: Paul Haddad <paul@pth.com>
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK31*", "*" },
CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
},
{
/*
* The Hitachi CJ series with J8A8 firmware apparantly has
* problems with tagged commands.
* PR: 23536
* Reported by: amagai@nue.org
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK32CJ*", "J8A8" },
CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
},
{
/*
* These are the large storage arrays.
* Submitted by: William Carrel <william.carrel@infospace.com>
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "OPEN*", "*" },
CAM_QUIRK_HILUNS, 2, 1024
},
{
/*
* 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_NOVPDS, /*mintags*/0, /*maxtags*/0
},
{
/*
* Would repond to all LUNs if asked for.
*/
{
T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "CALIPER",
"CP150", "*"
},
CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
},
{
/*
* Would repond to all LUNs if asked for.
*/
{
T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
"96X2*", "*"
},
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
},
{
/* Submitted by: Matthew Dodd <winter@jurai.net> */
{ T_PROCESSOR, SIP_MEDIA_FIXED, "CABLETRN", "EA41*", "*" },
CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
},
{
/* TeraSolutions special settings for TRC-22 RAID */
{ T_DIRECT, SIP_MEDIA_FIXED, "TERASOLU", "TRC-22", "*" },
/*quirks*/0, /*mintags*/55, /*maxtags*/255
},
{
/* Veritas Storage Appliance */
{ T_DIRECT, SIP_MEDIA_FIXED, "VERITAS", "*", "*" },
CAM_QUIRK_HILUNS, /*mintags*/2, /*maxtags*/1024
},
{
/*
* Would respond to all LUNs. Device type and removable
* flag are jumper-selectable.
*/
{ T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, "MaxOptix",
"Tahiti 1", "*"
},
CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
},
{
/* EasyRAID E5A aka. areca ARC-6010 */
{ T_DIRECT, SIP_MEDIA_FIXED, "easyRAID", "*", "*" },
CAM_QUIRK_NOHILUNS, /*mintags*/2, /*maxtags*/255
},
{
{ T_ENCLOSURE, SIP_MEDIA_FIXED, "DP", "BACKPLANE", "*" },
CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
},
{
{ T_DIRECT, SIP_MEDIA_REMOVABLE, "Garmin", "*", "*" },
CAM_QUIRK_NORPTLUNS, /*mintags*/2, /*maxtags*/255
},
{
/* Default tagged queuing parameters for all devices */
{
T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
/*vendor*/"*", /*product*/"*", /*revision*/"*"
},
/*quirks*/0, /*mintags*/2, /*maxtags*/255
},
};
static const int scsi_quirk_table_size =
sizeof(scsi_quirk_table) / sizeof(*scsi_quirk_table);
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);
static void proberequestdefaultnegotiation(struct cam_periph *periph);
static int proberequestbackoff(struct cam_periph *periph,
struct cam_ed *device);
static void probedone(struct cam_periph *periph, union ccb *done_ccb);
static void probe_purge_old(struct cam_path *path,
struct scsi_report_luns_data *new,
probe_flags flags);
static void probecleanup(struct cam_periph *periph);
static void scsi_find_quirk(struct cam_ed *device);
static void scsi_scan_bus(struct cam_periph *periph, union ccb *ccb);
static void scsi_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 struct cam_ed *
scsi_alloc_device(struct cam_eb *bus, struct cam_et *target,
lun_id_t lun_id);
static void scsi_devise_transport(struct cam_path *path);
static void scsi_set_transfer_settings(struct ccb_trans_settings *cts,
struct cam_path *path,
int async_update);
static void scsi_toggle_tags(struct cam_path *path);
static void scsi_dev_async(u_int32_t async_code,
struct cam_eb *bus,
struct cam_et *target,
struct cam_ed *device,
void *async_arg);
static void scsi_action(union ccb *start_ccb);
static void scsi_announce_periph(struct cam_periph *periph);
static struct xpt_xport scsi_xport = {
.alloc_device = scsi_alloc_device,
.action = scsi_action,
.async = scsi_dev_async,
.announce = scsi_announce_periph,
};
struct xpt_xport *
scsi_get_xport(void)
{
return (&scsi_xport);
}
static void
probe_periph_init()
{
}
static cam_status
proberegister(struct cam_periph *periph, void *arg)
{
union ccb *request_ccb; /* CCB representing the probe request */
cam_status status;
probe_softc *softc;
request_ccb = (union ccb *)arg;
if (request_ccb == NULL) {
printf("proberegister: no probe CCB, "
"can't register device\n");
return(CAM_REQ_CMP_ERR);
}
softc = (probe_softc *)malloc(sizeof(*softc), M_CAMXPT, M_NOWAIT);
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);
TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
periph_links.tqe);
softc->flags = 0;
periph->softc = softc;
softc->periph = periph;
softc->action = PROBE_INVALID;
status = cam_periph_acquire(periph);
if (status != CAM_REQ_CMP) {
return (status);
}
CAM_DEBUG(periph->path, CAM_DEBUG_PROBE, ("Probe started\n"));
scsi_devise_transport(periph->path);
/*
* Ensure we've waited at least a bus settle
* delay before attempting to probe the device.
* For HBAs that don't do bus resets, this won't make a difference.
*/
cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset,
scsi_delay);
probeschedule(periph);
return(CAM_REQ_CMP);
}
static void
probeschedule(struct cam_periph *periph)
{
struct ccb_pathinq cpi;
union ccb *ccb;
probe_softc *softc;
softc = (probe_softc *)periph->softc;
ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NONE);
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
/*
* 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.
*
* 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.
*/
if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
&& (ccb->ccb_h.target_lun == 0)) {
PROBE_SET_ACTION(softc, PROBE_TUR);
} else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0
&& (cpi.hba_misc & PIM_NOBUSRESET) != 0) {
proberequestdefaultnegotiation(periph);
PROBE_SET_ACTION(softc, PROBE_INQUIRY);
} else {
PROBE_SET_ACTION(softc, PROBE_INQUIRY);
}
if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE)
softc->flags |= PROBE_NO_ANNOUNCE;
else
softc->flags &= ~PROBE_NO_ANNOUNCE;
if (cpi.hba_misc & PIM_EXTLUNS)
softc->flags |= PROBE_EXTLUN;
else
softc->flags &= ~PROBE_EXTLUN;
xpt_schedule(periph, CAM_PRIORITY_XPT);
}
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;
again:
switch (softc->action) {
case PROBE_TUR:
case PROBE_TUR_FOR_NEGOTIATION:
case PROBE_DV_EXIT:
{
scsi_test_unit_ready(csio,
/*retries*/4,
probedone,
MSG_SIMPLE_Q_TAG,
SSD_FULL_SIZE,
/*timeout*/60000);
break;
}
case PROBE_INQUIRY:
case PROBE_FULL_INQUIRY:
case PROBE_INQUIRY_BASIC_DV1:
case PROBE_INQUIRY_BASIC_DV2:
{
u_int inquiry_len;
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)
&& ((softc->flags & PROBE_INQUIRY_CKSUM) == 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);
}
if (softc->action == PROBE_INQUIRY)
inquiry_len = SHORT_INQUIRY_LENGTH;
else
inquiry_len = SID_ADDITIONAL_LENGTH(inq_buf);
/*
* Some parallel SCSI devices fail to send an
* ignore wide residue message when dealing with
* odd length inquiry requests. Round up to be
* safe.
*/
inquiry_len = roundup2(inquiry_len, 2);
if (softc->action == PROBE_INQUIRY_BASIC_DV1
|| softc->action == PROBE_INQUIRY_BASIC_DV2) {
inq_buf = malloc(inquiry_len, M_CAMXPT, M_NOWAIT);
}
if (inq_buf == NULL) {
xpt_print(periph->path, "malloc failure- skipping Basic"
"Domain Validation\n");
PROBE_SET_ACTION(softc, PROBE_DV_EXIT);
scsi_test_unit_ready(csio,
/*retries*/4,
probedone,
MSG_SIMPLE_Q_TAG,
SSD_FULL_SIZE,
/*timeout*/60000);
break;
}
scsi_inquiry(csio,
/*retries*/4,
probedone,
MSG_SIMPLE_Q_TAG,
(u_int8_t *)inq_buf,
inquiry_len,
/*evpd*/FALSE,
/*page_code*/0,
SSD_MIN_SIZE,
/*timeout*/60 * 1000);
break;
}
case PROBE_REPORT_LUNS:
{
void *rp;
rp = malloc(periph->path->target->rpl_size,
M_CAMXPT, M_NOWAIT | M_ZERO);
if (rp == NULL) {
struct scsi_inquiry_data *inq_buf;
inq_buf = &periph->path->device->inq_data;
xpt_print(periph->path,
"Unable to alloc report luns storage\n");
if (INQ_DATA_TQ_ENABLED(inq_buf))
PROBE_SET_ACTION(softc, PROBE_MODE_SENSE);
else
PROBE_SET_ACTION(softc,
PROBE_SUPPORTED_VPD_LIST);
goto again;
}
scsi_report_luns(csio, 5, probedone, MSG_SIMPLE_Q_TAG,
RPL_REPORT_DEFAULT, rp, periph->path->target->rpl_size,
SSD_FULL_SIZE, 60000); break;
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_CAMXPT, 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,
/*timeout*/60000);
break;
}
xpt_print(periph->path, "Unable to mode sense control page - "
"malloc failure\n");
PROBE_SET_ACTION(softc, PROBE_SUPPORTED_VPD_LIST);
}
/* FALLTHROUGH */
case PROBE_SUPPORTED_VPD_LIST:
{
struct scsi_vpd_supported_page_list *vpd_list;
struct cam_ed *device;
vpd_list = NULL;
device = periph->path->device;
if ((SCSI_QUIRK(device)->quirks & CAM_QUIRK_NOVPDS) == 0)
vpd_list = malloc(sizeof(*vpd_list), M_CAMXPT,
M_NOWAIT | M_ZERO);
if (vpd_list != NULL) {
scsi_inquiry(csio,
/*retries*/4,
probedone,
MSG_SIMPLE_Q_TAG,
(u_int8_t *)vpd_list,
sizeof(*vpd_list),
/*evpd*/TRUE,
SVPD_SUPPORTED_PAGE_LIST,
SSD_MIN_SIZE,
/*timeout*/60 * 1000);
break;
}
done:
/*
* We'll have to do without, let our probedone
* routine finish up for us.
*/
start_ccb->csio.data_ptr = NULL;
cam_freeze_devq(periph->path);
cam_periph_doacquire(periph);
probedone(periph, start_ccb);
return;
}
case PROBE_DEVICE_ID:
{
struct scsi_vpd_device_id *devid;
devid = NULL;
if (scsi_vpd_supported_page(periph, SVPD_DEVICE_ID))
devid = malloc(SVPD_DEVICE_ID_MAX_SIZE, M_CAMXPT,
M_NOWAIT | M_ZERO);
if (devid != NULL) {
scsi_inquiry(csio,
/*retries*/4,
probedone,
MSG_SIMPLE_Q_TAG,
(uint8_t *)devid,
SVPD_DEVICE_ID_MAX_SIZE,
/*evpd*/TRUE,
SVPD_DEVICE_ID,
SSD_MIN_SIZE,
/*timeout*/60 * 1000);
break;
}
goto done;
}
case PROBE_SERIAL_NUM:
{
struct scsi_vpd_unit_serial_number *serial_buf;
struct cam_ed* device;
serial_buf = NULL;
device = periph->path->device;
if (device->serial_num != NULL) {
free(device->serial_num, M_CAMXPT);
device->serial_num = NULL;
device->serial_num_len = 0;
}
if (scsi_vpd_supported_page(periph, SVPD_UNIT_SERIAL_NUMBER))
serial_buf = (struct scsi_vpd_unit_serial_number *)
malloc(sizeof(*serial_buf), M_CAMXPT,
M_NOWAIT|M_ZERO);
if (serial_buf != NULL) {
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,
/*timeout*/60 * 1000);
break;
}
goto done;
}
default:
panic("probestart: invalid action state 0x%x\n", softc->action);
}
start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
cam_periph_doacquire(periph);
xpt_action(start_ccb);
}
static void
proberequestdefaultnegotiation(struct cam_periph *periph)
{
struct ccb_trans_settings cts;
xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NONE);
cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
cts.type = CTS_TYPE_USER_SETTINGS;
xpt_action((union ccb *)&cts);
if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
return;
}
cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
cts.type = CTS_TYPE_CURRENT_SETTINGS;
xpt_action((union ccb *)&cts);
}
/*
* Backoff Negotiation Code- only pertinent for SPI devices.
*/
static int
proberequestbackoff(struct cam_periph *periph, struct cam_ed *device)
{
struct ccb_trans_settings cts;
struct ccb_trans_settings_spi *spi;
memset(&cts, 0, sizeof (cts));
xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NONE);
cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
cts.type = CTS_TYPE_CURRENT_SETTINGS;
xpt_action((union ccb *)&cts);
if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
if (bootverbose) {
xpt_print(periph->path,
"failed to get current device settings\n");
}
return (0);
}
if (cts.transport != XPORT_SPI) {
if (bootverbose) {
xpt_print(periph->path, "not SPI transport\n");
}
return (0);
}
spi = &cts.xport_specific.spi;
/*
* We cannot renegotiate sync rate if we don't have one.
*/
if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
if (bootverbose) {
xpt_print(periph->path, "no sync rate known\n");
}
return (0);
}
/*
* We'll assert that we don't have to touch PPR options- the
* SIM will see what we do with period and offset and adjust
* the PPR options as appropriate.
*/
/*
* A sync rate with unknown or zero offset is nonsensical.
* A sync period of zero means Async.
*/
if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0
|| spi->sync_offset == 0 || spi->sync_period == 0) {
if (bootverbose) {
xpt_print(periph->path, "no sync rate available\n");
}
return (0);
}
if (device->flags & CAM_DEV_DV_HIT_BOTTOM) {
CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
("hit async: giving up on DV\n"));
return (0);
}
/*
* Jump sync_period up by one, but stop at 5MHz and fall back to Async.
* We don't try to remember 'last' settings to see if the SIM actually
* gets into the speed we want to set. We check on the SIM telling
* us that a requested speed is bad, but otherwise don't try and
* check the speed due to the asynchronous and handshake nature
* of speed setting.
*/
spi->valid = CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_SYNC_OFFSET;
for (;;) {
spi->sync_period++;
if (spi->sync_period >= 0xf) {
spi->sync_period = 0;
spi->sync_offset = 0;
CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
("setting to async for DV\n"));
/*
* Once we hit async, we don't want to try
* any more settings.
*/
device->flags |= CAM_DEV_DV_HIT_BOTTOM;
} else if (bootverbose) {
CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
("DV: period 0x%x\n", spi->sync_period));
printf("setting period to 0x%x\n", spi->sync_period);
}
cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
cts.type = CTS_TYPE_CURRENT_SETTINGS;
xpt_action((union ccb *)&cts);
if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
break;
}
CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
("DV: failed to set period 0x%x\n", spi->sync_period));
if (spi->sync_period == 0) {
return (0);
}
}
return (1);
}
#define CCB_COMPLETED_OK(ccb) (((ccb).status & CAM_STATUS_MASK) == CAM_REQ_CMP)
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 (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
if (cam_periph_error(done_ccb, 0,
SF_NO_PRINT, NULL) == ERESTART) {
outr:
/* Drop freeze taken due to CAM_DEV_QFREEZE */
cam_release_devq(path, 0, 0, 0, FALSE);
return;
}
else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
/* Don't wedge the queue */
xpt_release_devq(done_ccb->ccb_h.path,
/*count*/1,
/*run_queue*/TRUE);
}
PROBE_SET_ACTION(softc, PROBE_INQUIRY);
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
out:
/* Drop freeze taken due to CAM_DEV_QFREEZE and release. */
cam_release_devq(path, 0, 0, 0, FALSE);
cam_periph_release_locked(periph);
return;
}
case PROBE_INQUIRY:
case PROBE_FULL_INQUIRY:
{
if (cam_ccb_status(done_ccb) == CAM_REQ_CMP) {
struct scsi_inquiry_data *inq_buf;
u_int8_t periph_qual;
path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID;
scsi_find_quirk(path->device);
inq_buf = &path->device->inq_data;
periph_qual = SID_QUAL(inq_buf);
if (periph_qual == SID_QUAL_LU_CONNECTED) {
u_int8_t len;
/*
* We conservatively request only
* SHORT_INQUIRY_LEN bytes of inquiry
* information during our first try
* at sending an INQUIRY. If the device
* has more information to give,
* perform a second request specifying
* the amount of information the device
* is willing to give.
*/
len = inq_buf->additional_length
+ offsetof(struct scsi_inquiry_data,
additional_length) + 1;
if (softc->action == PROBE_INQUIRY
&& len > SHORT_INQUIRY_LENGTH) {
PROBE_SET_ACTION(softc, PROBE_FULL_INQUIRY);
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
goto out;
}
scsi_devise_transport(path);
if (path->device->lun_id == 0 &&
SID_ANSI_REV(inq_buf) > SCSI_REV_SPC2 &&
(SCSI_QUIRK(path->device)->quirks &
CAM_QUIRK_NORPTLUNS) == 0) {
PROBE_SET_ACTION(softc,
PROBE_REPORT_LUNS);
/*
* Start with room for *one* lun.
*/
periph->path->target->rpl_size = 16;
} else if (INQ_DATA_TQ_ENABLED(inq_buf))
PROBE_SET_ACTION(softc,
PROBE_MODE_SENSE);
else
PROBE_SET_ACTION(softc,
PROBE_SUPPORTED_VPD_LIST);
if (path->device->flags & CAM_DEV_UNCONFIGURED) {
path->device->flags &= ~CAM_DEV_UNCONFIGURED;
xpt_acquire_device(path->device);
}
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
goto out;
} else if (path->device->lun_id == 0 &&
SID_ANSI_REV(inq_buf) >= SCSI_REV_SPC2 &&
(SCSI_QUIRK(path->device)->quirks &
CAM_QUIRK_NORPTLUNS) == 0) {
PROBE_SET_ACTION(softc, PROBE_REPORT_LUNS);
periph->path->target->rpl_size = 16;
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
goto out;
}
} 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) {
goto outr;
} else {
if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
/* Don't wedge the queue */
xpt_release_devq(done_ccb->ccb_h.path,
/*count*/1, /*run_queue*/TRUE);
}
path->device->flags &= ~CAM_DEV_INQUIRY_DATA_VALID;
}
/*
* 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);
PROBE_SET_ACTION(softc, PROBE_INVALID);
xpt_release_ccb(done_ccb);
break;
}
case PROBE_REPORT_LUNS:
{
struct ccb_scsiio *csio;
struct scsi_report_luns_data *lp;
u_int nlun, maxlun;
csio = &done_ccb->csio;
lp = (struct scsi_report_luns_data *)csio->data_ptr;
nlun = scsi_4btoul(lp->length) / 8;
maxlun = (csio->dxfer_len / 8) - 1;
if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
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) {
goto outr;
}
if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
xpt_release_devq(done_ccb->ccb_h.path, 1,
TRUE);
}
free(lp, M_CAMXPT);
lp = NULL;
} else if (nlun > maxlun) {
/*
* Reallocate and retry to cover all luns
*/
CAM_DEBUG(path, CAM_DEBUG_PROBE,
("Probe: reallocating REPORT_LUNS for %u luns\n",
nlun));
free(lp, M_CAMXPT);
path->target->rpl_size = (nlun << 3) + 8;
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
goto out;
} else if (nlun == 0) {
/*
* If there don't appear to be any luns, bail.
*/
free(lp, M_CAMXPT);
lp = NULL;
} else {
lun_id_t lun;
int idx;
CAM_DEBUG(path, CAM_DEBUG_PROBE,
("Probe: %u lun(s) reported\n", nlun));
CAM_GET_LUN(lp, 0, lun);
/*
* If the first lun is not lun 0, then either there
* is no lun 0 in the list, or the list is unsorted.
*/
if (lun != 0) {
for (idx = 0; idx < nlun; idx++) {
CAM_GET_LUN(lp, idx, lun);
if (lun == 0) {
break;
}
}
if (idx != nlun) {
uint8_t tlun[8];
memcpy(tlun,
lp->luns[0].lundata, 8);
memcpy(lp->luns[0].lundata,
lp->luns[idx].lundata, 8);
memcpy(lp->luns[idx].lundata,
tlun, 8);
CAM_DEBUG(path, CAM_DEBUG_PROBE,
("lun 0 in position %u\n", idx));
}
}
/*
* If we have an old lun list, We can either
* retest luns that appear to have been dropped,
* or just nuke them. We'll opt for the latter.
* This function will also install the new list
* in the target structure.
*/
probe_purge_old(path, lp, softc->flags);
lp = NULL;
}
if (path->device->flags & CAM_DEV_INQUIRY_DATA_VALID &&
SID_QUAL(&path->device->inq_data) == SID_QUAL_LU_CONNECTED) {
struct scsi_inquiry_data *inq_buf;
inq_buf = &path->device->inq_data;
if (INQ_DATA_TQ_ENABLED(inq_buf))
PROBE_SET_ACTION(softc, PROBE_MODE_SENSE);
else
PROBE_SET_ACTION(softc,
PROBE_SUPPORTED_VPD_LIST);
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
goto out;
}
if (lp) {
free(lp, M_CAMXPT);
}
PROBE_SET_ACTION(softc, PROBE_INVALID);
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 (cam_ccb_status(done_ccb) == 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) {
goto outr;
} else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
/* Don't wedge the queue */
xpt_release_devq(done_ccb->ccb_h.path,
/*count*/1, /*run_queue*/TRUE);
}
xpt_release_ccb(done_ccb);
free(mode_hdr, M_CAMXPT);
PROBE_SET_ACTION(softc, PROBE_SUPPORTED_VPD_LIST);
xpt_schedule(periph, priority);
goto out;
}
case PROBE_SUPPORTED_VPD_LIST:
{
struct ccb_scsiio *csio;
struct scsi_vpd_supported_page_list *page_list;
csio = &done_ccb->csio;
page_list =
(struct scsi_vpd_supported_page_list *)csio->data_ptr;
if (path->device->supported_vpds != NULL) {
free(path->device->supported_vpds, M_CAMXPT);
path->device->supported_vpds = NULL;
path->device->supported_vpds_len = 0;
}
if (page_list == NULL) {
/*
* Don't process the command as it was never sent
*/
} else if (CCB_COMPLETED_OK(csio->ccb_h)) {
/* Got vpd list */
path->device->supported_vpds_len = page_list->length +
SVPD_SUPPORTED_PAGES_HDR_LEN;
path->device->supported_vpds = (uint8_t *)page_list;
xpt_release_ccb(done_ccb);
PROBE_SET_ACTION(softc, PROBE_DEVICE_ID);
xpt_schedule(periph, priority);
goto out;
} else if (cam_periph_error(done_ccb, 0,
SF_RETRY_UA|SF_NO_PRINT,
&softc->saved_ccb) == ERESTART) {
goto outr;
} else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
/* Don't wedge the queue */
xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
/*run_queue*/TRUE);
}
if (page_list)
free(page_list, M_CAMXPT);
/* No VPDs available, skip to device check. */
csio->data_ptr = NULL;
goto probe_device_check;
}
case PROBE_DEVICE_ID:
{
struct scsi_vpd_device_id *devid;
struct ccb_scsiio *csio;
uint32_t length = 0;
csio = &done_ccb->csio;
devid = (struct scsi_vpd_device_id *)csio->data_ptr;
/* Clean up from previous instance of this device */
if (path->device->device_id != NULL) {
path->device->device_id_len = 0;
free(path->device->device_id, M_CAMXPT);
path->device->device_id = NULL;
}
if (devid == NULL) {
/* Don't process the command as it was never sent */
} else if (CCB_COMPLETED_OK(csio->ccb_h)) {
length = scsi_2btoul(devid->length);
if (length != 0) {
/*
* NB: device_id_len is actual response
* size, not buffer size.
*/
path->device->device_id_len = length +
SVPD_DEVICE_ID_HDR_LEN;
path->device->device_id = (uint8_t *)devid;
}
} else if (cam_periph_error(done_ccb, 0,
SF_RETRY_UA,
&softc->saved_ccb) == ERESTART) {
goto outr;
} else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
/* Don't wedge the queue */
xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
/*run_queue*/TRUE);
}
/* Free the device id space if we don't use it */
if (devid && length == 0)
free(devid, M_CAMXPT);
xpt_release_ccb(done_ccb);
PROBE_SET_ACTION(softc, PROBE_SERIAL_NUM);
xpt_schedule(periph, priority);
goto out;
}
probe_device_check:
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;
if (serial_buf == NULL) {
/*
* Don't process the command as it was never sent
*/
} else if (cam_ccb_status(done_ccb) == CAM_REQ_CMP
&& (serial_buf->length > 0)) {
have_serialnum = 1;
path->device->serial_num =
(u_int8_t *)malloc((serial_buf->length + 1),
M_CAMXPT, M_NOWAIT);
if (path->device->serial_num != NULL) {
memcpy(path->device->serial_num,
serial_buf->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) {
goto outr;
} else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
/* Don't wedge the queue */
xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
/*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_CAMXPT);
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 retrieve
* the user settings, and set them as the current
* settings to set the device up.
*/
proberequestdefaultnegotiation(periph);
xpt_release_ccb(done_ccb);
/*
* Perform a TUR to allow the controller to
* perform any necessary transfer negotiation.
*/
PROBE_SET_ACTION(softc, PROBE_TUR_FOR_NEGOTIATION);
xpt_schedule(periph, priority);
goto out;
}
xpt_release_ccb(done_ccb);
break;
}
case PROBE_TUR_FOR_NEGOTIATION:
case PROBE_DV_EXIT:
if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
cam_periph_error(done_ccb, 0,
SF_NO_PRINT | SF_NO_RECOVERY | SF_NO_RETRY, NULL);
}
if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
/* Don't wedge the queue */
xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
/*run_queue*/TRUE);
}
/*
* Do Domain Validation for lun 0 on devices that claim
* to support Synchronous Transfer modes.
*/
if (softc->action == PROBE_TUR_FOR_NEGOTIATION
&& done_ccb->ccb_h.target_lun == 0
&& (path->device->inq_data.flags & SID_Sync) != 0
&& (path->device->flags & CAM_DEV_IN_DV) == 0) {
CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
("Begin Domain Validation\n"));
path->device->flags |= CAM_DEV_IN_DV;
xpt_release_ccb(done_ccb);
PROBE_SET_ACTION(softc, PROBE_INQUIRY_BASIC_DV1);
xpt_schedule(periph, priority);
goto out;
}
if (softc->action == PROBE_DV_EXIT) {
CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
("Leave Domain Validation\n"));
}
if (path->device->flags & CAM_DEV_UNCONFIGURED) {
path->device->flags &= ~CAM_DEV_UNCONFIGURED;
xpt_acquire_device(path->device);
}
path->device->flags &=
~(CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
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, done_ccb->ccb_h.path,
done_ccb);
}
PROBE_SET_ACTION(softc, PROBE_DONE);
xpt_release_ccb(done_ccb);
break;
case PROBE_INQUIRY_BASIC_DV1:
case PROBE_INQUIRY_BASIC_DV2:
{
struct scsi_inquiry_data *nbuf;
struct ccb_scsiio *csio;
if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
cam_periph_error(done_ccb, 0,
SF_NO_PRINT | SF_NO_RECOVERY | SF_NO_RETRY, NULL);
}
if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
/* Don't wedge the queue */
xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
/*run_queue*/TRUE);
}
csio = &done_ccb->csio;
nbuf = (struct scsi_inquiry_data *)csio->data_ptr;
if (bcmp(nbuf, &path->device->inq_data, SHORT_INQUIRY_LENGTH)) {
xpt_print(path,
"inquiry data fails comparison at DV%d step\n",
softc->action == PROBE_INQUIRY_BASIC_DV1 ? 1 : 2);
if (proberequestbackoff(periph, path->device)) {
path->device->flags &= ~CAM_DEV_IN_DV;
PROBE_SET_ACTION(softc, PROBE_TUR_FOR_NEGOTIATION);
} else {
/* give up */
PROBE_SET_ACTION(softc, PROBE_DV_EXIT);
}
free(nbuf, M_CAMXPT);
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
goto out;
}
free(nbuf, M_CAMXPT);
if (softc->action == PROBE_INQUIRY_BASIC_DV1) {
PROBE_SET_ACTION(softc, PROBE_INQUIRY_BASIC_DV2);
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
goto out;
}
if (softc->action == PROBE_INQUIRY_BASIC_DV2) {
CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
("Leave Domain Validation Successfully\n"));
}
if (path->device->flags & CAM_DEV_UNCONFIGURED) {
path->device->flags &= ~CAM_DEV_UNCONFIGURED;
xpt_acquire_device(path->device);
}
path->device->flags &=
~(CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
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, done_ccb->ccb_h.path,
done_ccb);
}
PROBE_SET_ACTION(softc, PROBE_DONE);
xpt_release_ccb(done_ccb);
break;
}
default:
panic("probedone: invalid action state 0x%x\n", softc->action);
}
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_DEBUG(periph->path, CAM_DEBUG_PROBE, ("Probe completed\n"));
/* Drop freeze taken due to CAM_DEV_QFREEZE flag set. */
cam_release_devq(path, 0, 0, 0, FALSE);
cam_periph_release_locked(periph);
cam_periph_invalidate(periph);
cam_periph_release_locked(periph);
} else {
probeschedule(periph);
goto out;
}
}
static void
probe_purge_old(struct cam_path *path, struct scsi_report_luns_data *new,
probe_flags flags)
{
struct cam_path *tp;
struct scsi_report_luns_data *old;
u_int idx1, idx2, nlun_old, nlun_new;
lun_id_t this_lun;
u_int8_t *ol, *nl;
if (path->target == NULL) {
return;
}
mtx_lock(&path->target->luns_mtx);
old = path->target->luns;
path->target->luns = new;
mtx_unlock(&path->target->luns_mtx);
if (old == NULL)
return;
nlun_old = scsi_4btoul(old->length) / 8;
nlun_new = scsi_4btoul(new->length) / 8;
/*
* We are not going to assume sorted lists. Deal.
*/
for (idx1 = 0; idx1 < nlun_old; idx1++) {
ol = old->luns[idx1].lundata;
for (idx2 = 0; idx2 < nlun_new; idx2++) {
nl = new->luns[idx2].lundata;
if (memcmp(nl, ol, 8) == 0) {
break;
}
}
if (idx2 < nlun_new) {
continue;
}
/*
* An 'old' item not in the 'new' list.
* Nuke it. Except that if it is lun 0,
* that would be what the probe state
* machine is currently working on,
* so we won't do that.
*/
CAM_GET_LUN(old, idx1, this_lun);
if (this_lun == 0) {
continue;
}
/*
* We also cannot nuke it if it is
* not in a lun format we understand
* and replace the LUN with a "simple" LUN
* if that is all the HBA supports.
*/
if (!(flags & PROBE_EXTLUN)) {
if (!CAM_CAN_GET_SIMPLE_LUN(old, idx1))
continue;
CAM_GET_SIMPLE_LUN(old, idx1, this_lun);
}
if (xpt_create_path(&tp, NULL, xpt_path_path_id(path),
xpt_path_target_id(path), this_lun) == CAM_REQ_CMP) {
xpt_async(AC_LOST_DEVICE, tp, NULL);
xpt_free_path(tp);
}
}
free(old, M_CAMXPT);
}
static void
probecleanup(struct cam_periph *periph)
{
free(periph->softc, M_CAMXPT);
}
static void
scsi_find_quirk(struct cam_ed *device)
{
struct scsi_quirk_entry *quirk;
caddr_t match;
match = cam_quirkmatch((caddr_t)&device->inq_data,
(caddr_t)scsi_quirk_table,
sizeof(scsi_quirk_table) /
sizeof(*scsi_quirk_table),
sizeof(*scsi_quirk_table), scsi_inquiry_match);
if (match == NULL)
panic("xpt_find_quirk: device didn't match wildcard entry!!");
quirk = (struct scsi_quirk_entry *)match;
device->quirk = quirk;
device->mintags = quirk->mintags;
device->maxtags = quirk->maxtags;
}
static int
sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS)
{
int error, val;
val = cam_srch_hi;
error = sysctl_handle_int(oidp, &val, 0, req);
if (error != 0 || req->newptr == NULL)
return (error);
if (val == 0 || val == 1) {
cam_srch_hi = val;
return (0);
} else {
return (EINVAL);
}
}
typedef struct {
union ccb *request_ccb;
struct ccb_pathinq *cpi;
int counter;
int lunindex[0];
} scsi_scan_bus_info;
/*
* To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
* As the scan progresses, scsi_scan_bus is used as the
* callback on completion function.
*/
static void
scsi_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
{
struct mtx *mtx;
CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
("scsi_scan_bus\n"));
switch (request_ccb->ccb_h.func_code) {
case XPT_SCAN_BUS:
case XPT_SCAN_TGT:
{
scsi_scan_bus_info *scan_info;
union ccb *work_ccb, *reset_ccb;
struct cam_path *path;
u_int i;
u_int low_target, max_target;
u_int initiator_id;
/* Find out the characteristics of the bus */
work_ccb = xpt_alloc_ccb_nowait();
if (work_ccb == NULL) {
request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
xpt_done(request_ccb);
return;
}
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;
}
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;
}
/* We may need to reset bus first, if we haven't done it yet. */
if ((work_ccb->cpi.hba_inquiry &
(PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) &&
!(work_ccb->cpi.hba_misc & PIM_NOBUSRESET) &&
!timevalisset(&request_ccb->ccb_h.path->bus->last_reset) &&
(reset_ccb = xpt_alloc_ccb_nowait()) != NULL) {
xpt_setup_ccb(&reset_ccb->ccb_h, request_ccb->ccb_h.path,
CAM_PRIORITY_NONE);
reset_ccb->ccb_h.func_code = XPT_RESET_BUS;
xpt_action(reset_ccb);
if (reset_ccb->ccb_h.status != CAM_REQ_CMP) {
request_ccb->ccb_h.status = reset_ccb->ccb_h.status;
xpt_free_ccb(reset_ccb);
xpt_free_ccb(work_ccb);
xpt_done(request_ccb);
return;
}
xpt_free_ccb(reset_ccb);
}
/* Save some state for use while we probe for devices */
scan_info = (scsi_scan_bus_info *) malloc(sizeof(scsi_scan_bus_info) +
(work_ccb->cpi.max_target * sizeof (u_int)), M_CAMXPT, M_ZERO|M_NOWAIT);
if (scan_info == NULL) {
request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
xpt_free_ccb(work_ccb);
xpt_done(request_ccb);
return;
}
CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
("SCAN start for %p\n", scan_info));
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;
low_target = 0;
initiator_id = scan_info->cpi->initiator_id;
/*
* We can scan all targets in parallel, or do it sequentially.
*/
if (request_ccb->ccb_h.func_code == XPT_SCAN_TGT) {
max_target = low_target = request_ccb->ccb_h.target_id;
scan_info->counter = 0;
} else if (scan_info->cpi->hba_misc & PIM_SEQSCAN) {
max_target = 0;
scan_info->counter = 0;
} else {
scan_info->counter = scan_info->cpi->max_target + 1;
if (scan_info->cpi->initiator_id < scan_info->counter) {
scan_info->counter--;
}
}
mtx = xpt_path_mtx(scan_info->request_ccb->ccb_h.path);
mtx_unlock(mtx);
for (i = low_target; i <= max_target; i++) {
cam_status status;
if (i == initiator_id)
continue;
status = xpt_create_path(&path, NULL,
request_ccb->ccb_h.path_id,
i, 0);
if (status != CAM_REQ_CMP) {
printf("scsi_scan_bus: xpt_create_path failed"
" with status %#x, bus scan halted\n",
status);
free(scan_info, M_CAMXPT);
request_ccb->ccb_h.status = status;
xpt_free_ccb(work_ccb);
xpt_done(request_ccb);
break;
}
work_ccb = xpt_alloc_ccb_nowait();
if (work_ccb == NULL) {
xpt_free_ccb((union ccb *)scan_info->cpi);
free(scan_info, M_CAMXPT);
xpt_free_path(path);
request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
xpt_done(request_ccb);
break;
}
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 = scsi_scan_bus;
work_ccb->ccb_h.flags |= CAM_UNLOCKED;
work_ccb->ccb_h.ppriv_ptr0 = scan_info;
work_ccb->crcn.flags = request_ccb->crcn.flags;
xpt_action(work_ccb);
}
mtx_lock(mtx);
break;
}
case XPT_SCAN_LUN:
{
cam_status status;
struct cam_path *path, *oldpath;
scsi_scan_bus_info *scan_info;
struct cam_et *target;
struct cam_ed *device, *nextdev;
int next_target;
path_id_t path_id;
target_id_t target_id;
lun_id_t lun_id;
oldpath = request_ccb->ccb_h.path;
status = cam_ccb_status(request_ccb);
scan_info = (scsi_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0;
path_id = request_ccb->ccb_h.path_id;
target_id = request_ccb->ccb_h.target_id;
lun_id = request_ccb->ccb_h.target_lun;
target = request_ccb->ccb_h.path->target;
next_target = 1;
mtx = xpt_path_mtx(scan_info->request_ccb->ccb_h.path);
mtx_lock(mtx);
mtx_lock(&target->luns_mtx);
if (target->luns) {
lun_id_t first;
u_int nluns = scsi_4btoul(target->luns->length) / 8;
/*
* Make sure we skip over lun 0 if it's the first member
* of the list as we've actually just finished probing
* it.
*/
CAM_GET_LUN(target->luns, 0, first);
if (first == 0 && scan_info->lunindex[target_id] == 0) {
scan_info->lunindex[target_id]++;
}
/*
* Skip any LUNs that the HBA can't deal with.
*/
while (scan_info->lunindex[target_id] < nluns) {
if (scan_info->cpi->hba_misc & PIM_EXTLUNS) {
CAM_GET_LUN(target->luns,
scan_info->lunindex[target_id],
lun_id);
break;
}
if (CAM_CAN_GET_SIMPLE_LUN(target->luns,
scan_info->lunindex[target_id])) {
CAM_GET_SIMPLE_LUN(target->luns,
scan_info->lunindex[target_id],
lun_id);
break;
}
scan_info->lunindex[target_id]++;
}
if (scan_info->lunindex[target_id] < nluns) {
mtx_unlock(&target->luns_mtx);
next_target = 0;
CAM_DEBUG(request_ccb->ccb_h.path,
CAM_DEBUG_PROBE,
("next lun to try at index %u is %jx\n",
scan_info->lunindex[target_id],
(uintmax_t)lun_id));
scan_info->lunindex[target_id]++;
} else {
mtx_unlock(&target->luns_mtx);
/* We're done with scanning all luns. */
}
} else {
mtx_unlock(&target->luns_mtx);
device = request_ccb->ccb_h.path->device;
/* Continue sequential LUN scan if: */
/* -- we have more LUNs that need recheck */
mtx_lock(&target->bus->eb_mtx);
nextdev = device;
while ((nextdev = TAILQ_NEXT(nextdev, links)) != NULL)
if ((nextdev->flags & CAM_DEV_UNCONFIGURED) == 0)
break;
mtx_unlock(&target->bus->eb_mtx);
if (nextdev != NULL) {
next_target = 0;
/* -- stop if CAM_QUIRK_NOLUNS is set. */
} else if (SCSI_QUIRK(device)->quirks & CAM_QUIRK_NOLUNS) {
next_target = 1;
/* -- this LUN is connected and its SCSI version
* allows more LUNs. */
} else if ((device->flags & CAM_DEV_UNCONFIGURED) == 0) {
if (lun_id < (CAM_SCSI2_MAXLUN-1) ||
CAN_SRCH_HI_DENSE(device))
next_target = 0;
/* -- this LUN is disconnected, its SCSI version
* allows more LUNs and we guess they may be. */
} else if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0) {
if (lun_id < (CAM_SCSI2_MAXLUN-1) ||
CAN_SRCH_HI_SPARSE(device))
next_target = 0;
}
if (next_target == 0) {
lun_id++;
if (lun_id > scan_info->cpi->max_lun)
next_target = 1;
}
}
/*
* Check to see if we scan any further luns.
*/
if (next_target) {
int done;
/*
* Free the current request path- we're done with it.
*/
xpt_free_path(oldpath);
hop_again:
done = 0;
if (scan_info->request_ccb->ccb_h.func_code == XPT_SCAN_TGT) {
done = 1;
} else if (scan_info->cpi->hba_misc & PIM_SEQSCAN) {
scan_info->counter++;
if (scan_info->counter ==
scan_info->cpi->initiator_id) {
scan_info->counter++;
}
if (scan_info->counter >=
scan_info->cpi->max_target+1) {
done = 1;
}
} else {
scan_info->counter--;
if (scan_info->counter == 0) {
done = 1;
}
}
if (done) {
mtx_unlock(mtx);
xpt_free_ccb(request_ccb);
xpt_free_ccb((union ccb *)scan_info->cpi);
request_ccb = scan_info->request_ccb;
CAM_DEBUG(request_ccb->ccb_h.path,
CAM_DEBUG_TRACE,
("SCAN done for %p\n", scan_info));
free(scan_info, M_CAMXPT);
request_ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(request_ccb);
break;
}
if ((scan_info->cpi->hba_misc & PIM_SEQSCAN) == 0) {
mtx_unlock(mtx);
xpt_free_ccb(request_ccb);
break;
}
status = xpt_create_path(&path, NULL,
scan_info->request_ccb->ccb_h.path_id,
scan_info->counter, 0);
if (status != CAM_REQ_CMP) {
mtx_unlock(mtx);
printf("scsi_scan_bus: xpt_create_path failed"
" with status %#x, bus scan halted\n",
status);
xpt_free_ccb(request_ccb);
xpt_free_ccb((union ccb *)scan_info->cpi);
request_ccb = scan_info->request_ccb;
free(scan_info, M_CAMXPT);
request_ccb->ccb_h.status = status;
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 = scsi_scan_bus;
request_ccb->ccb_h.flags |= CAM_UNLOCKED;
request_ccb->ccb_h.ppriv_ptr0 = scan_info;
request_ccb->crcn.flags =
scan_info->request_ccb->crcn.flags;
} else {
status = xpt_create_path(&path, NULL,
path_id, target_id, lun_id);
/*
* Free the old request path- we're done with it. We
* do this *after* creating the new path so that
* we don't remove a target that has our lun list
* in the case that lun 0 is not present.
*/
xpt_free_path(oldpath);
if (status != CAM_REQ_CMP) {
printf("scsi_scan_bus: xpt_create_path failed "
"with status %#x, halting LUN scan\n",
status);
goto hop_again;
}
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 = scsi_scan_bus;
request_ccb->ccb_h.flags |= CAM_UNLOCKED;
request_ccb->ccb_h.ppriv_ptr0 = scan_info;
request_ccb->crcn.flags =
scan_info->request_ccb->crcn.flags;
}
mtx_unlock(mtx);
xpt_action(request_ccb);
break;
}
default:
break;
}
}
static void
scsi_scan_lun(struct cam_periph *periph, struct cam_path *path,
cam_flags flags, union ccb *request_ccb)
{
struct ccb_pathinq cpi;
cam_status status;
struct cam_path *new_path;
struct cam_periph *old_periph;
int lock;
CAM_DEBUG(path, CAM_DEBUG_TRACE, ("scsi_scan_lun\n"));
xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
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;
}
if (request_ccb == NULL) {
request_ccb = xpt_alloc_ccb_nowait();
if (request_ccb == NULL) {
xpt_print(path, "scsi_scan_lun: can't allocate CCB, "
"can't continue\n");
return;
}
status = xpt_create_path(&new_path, NULL,
path->bus->path_id,
path->target->target_id,
path->device->lun_id);
if (status != CAM_REQ_CMP) {
xpt_print(path, "scsi_scan_lun: can't create path, "
"can't continue\n");
xpt_free_ccb(request_ccb);
return;
}
xpt_setup_ccb(&request_ccb->ccb_h, new_path, CAM_PRIORITY_XPT);
request_ccb->ccb_h.cbfcnp = xptscandone;
request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
request_ccb->ccb_h.flags |= CAM_UNLOCKED;
request_ccb->crcn.flags = flags;
}
lock = (xpt_path_owned(path) == 0);
if (lock)
xpt_path_lock(path);
if ((old_periph = cam_periph_find(path, "probe")) != NULL) {
if ((old_periph->flags & CAM_PERIPH_INVALID) == 0) {
probe_softc *softc;
softc = (probe_softc *)old_periph->softc;
TAILQ_INSERT_TAIL(&softc->request_ccbs,
&request_ccb->ccb_h, periph_links.tqe);
} else {
request_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
xpt_done(request_ccb);
}
} else {
status = cam_periph_alloc(proberegister, NULL, probecleanup,
probestart, "probe",
CAM_PERIPH_BIO,
request_ccb->ccb_h.path, NULL, 0,
request_ccb);
if (status != CAM_REQ_CMP) {
xpt_print(path, "scsi_scan_lun: cam_alloc_periph "
"returned an error, can't continue probe\n");
request_ccb->ccb_h.status = status;
xpt_done(request_ccb);
}
}
if (lock)
xpt_path_unlock(path);
}
static void
xptscandone(struct cam_periph *periph, union ccb *done_ccb)
{
xpt_free_path(done_ccb->ccb_h.path);
xpt_free_ccb(done_ccb);
}
static struct cam_ed *
scsi_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
{
struct scsi_quirk_entry *quirk;
struct cam_ed *device;
device = xpt_alloc_device(bus, target, lun_id);
if (device == NULL)
return (NULL);
/*
* Take the default quirk entry until we have inquiry
* data and can determine a better quirk to use.
*/
quirk = &scsi_quirk_table[scsi_quirk_table_size - 1];
device->quirk = (void *)quirk;
device->mintags = quirk->mintags;
device->maxtags = quirk->maxtags;
bzero(&device->inq_data, sizeof(device->inq_data));
device->inq_flags = 0;
device->queue_flags = 0;
device->serial_num = NULL;
device->serial_num_len = 0;
device->device_id = NULL;
device->device_id_len = 0;
device->supported_vpds = NULL;
device->supported_vpds_len = 0;
return (device);
}
static void
scsi_devise_transport(struct cam_path *path)
{
struct ccb_pathinq cpi;
struct ccb_trans_settings cts;
struct scsi_inquiry_data *inq_buf;
/* Get transport information from the SIM */
xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
inq_buf = NULL;
if ((path->device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0)
inq_buf = &path->device->inq_data;
path->device->protocol = PROTO_SCSI;
path->device->protocol_version =
inq_buf != NULL ? SID_ANSI_REV(inq_buf) : cpi.protocol_version;
path->device->transport = cpi.transport;
path->device->transport_version = cpi.transport_version;
/*
* Any device not using SPI3 features should
* be considered SPI2 or lower.
*/
if (inq_buf != NULL) {
if (path->device->transport == XPORT_SPI
&& (inq_buf->spi3data & SID_SPI_MASK) == 0
&& path->device->transport_version > 2)
path->device->transport_version = 2;
} else {
struct cam_ed* otherdev;
for (otherdev = TAILQ_FIRST(&path->target->ed_entries);
otherdev != NULL;
otherdev = TAILQ_NEXT(otherdev, links)) {
if (otherdev != path->device)
break;
}
if (otherdev != NULL) {
/*
* Initially assume the same versioning as
* prior luns for this target.
*/
path->device->protocol_version =
otherdev->protocol_version;
path->device->transport_version =
otherdev->transport_version;
} else {
/* Until we know better, opt for safty */
path->device->protocol_version = 2;
if (path->device->transport == XPORT_SPI)
path->device->transport_version = 2;
else
path->device->transport_version = 0;
}
}
/*
* XXX
* For a device compliant with SPC-2 we should be able
* to determine the transport version supported by
* scrutinizing the version descriptors in the
* inquiry buffer.
*/
/* Tell the controller what we think */
xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
cts.type = CTS_TYPE_CURRENT_SETTINGS;
cts.transport = path->device->transport;
cts.transport_version = path->device->transport_version;
cts.protocol = path->device->protocol;
cts.protocol_version = path->device->protocol_version;
cts.proto_specific.valid = 0;
cts.xport_specific.valid = 0;
xpt_action((union ccb *)&cts);
}
static void
scsi_dev_advinfo(union ccb *start_ccb)
{
struct cam_ed *device;
struct ccb_dev_advinfo *cdai;
off_t amt;
start_ccb->ccb_h.status = CAM_REQ_INVALID;
device = start_ccb->ccb_h.path->device;
cdai = &start_ccb->cdai;
switch(cdai->buftype) {
case CDAI_TYPE_SCSI_DEVID:
if (cdai->flags & CDAI_FLAG_STORE)
return;
cdai->provsiz = device->device_id_len;
if (device->device_id_len == 0)
break;
amt = device->device_id_len;
if (cdai->provsiz > cdai->bufsiz)
amt = cdai->bufsiz;
memcpy(cdai->buf, device->device_id, amt);
break;
case CDAI_TYPE_SERIAL_NUM:
if (cdai->flags & CDAI_FLAG_STORE)
return;
cdai->provsiz = device->serial_num_len;
if (device->serial_num_len == 0)
break;
amt = device->serial_num_len;
if (cdai->provsiz > cdai->bufsiz)
amt = cdai->bufsiz;
memcpy(cdai->buf, device->serial_num, amt);
break;
case CDAI_TYPE_PHYS_PATH:
if (cdai->flags & CDAI_FLAG_STORE) {
if (device->physpath != NULL) {
free(device->physpath, M_CAMXPT);
device->physpath = NULL;
}
device->physpath_len = cdai->bufsiz;
/* Clear existing buffer if zero length */
if (cdai->bufsiz == 0)
break;
device->physpath = malloc(cdai->bufsiz, M_CAMXPT, M_NOWAIT);
if (device->physpath == NULL) {
start_ccb->ccb_h.status = CAM_REQ_ABORTED;
return;
}
memcpy(device->physpath, cdai->buf, cdai->bufsiz);
} else {
cdai->provsiz = device->physpath_len;
if (device->physpath_len == 0)
break;
amt = device->physpath_len;
if (cdai->provsiz > cdai->bufsiz)
amt = cdai->bufsiz;
memcpy(cdai->buf, device->physpath, amt);
}
break;
case CDAI_TYPE_RCAPLONG:
if (cdai->flags & CDAI_FLAG_STORE) {
if (device->rcap_buf != NULL) {
free(device->rcap_buf, M_CAMXPT);
device->rcap_buf = NULL;
}
device->rcap_len = cdai->bufsiz;
/* Clear existing buffer if zero length */
if (cdai->bufsiz == 0)
break;
device->rcap_buf = malloc(cdai->bufsiz, M_CAMXPT,
M_NOWAIT);
if (device->rcap_buf == NULL) {
start_ccb->ccb_h.status = CAM_REQ_ABORTED;
return;
}
memcpy(device->rcap_buf, cdai->buf, cdai->bufsiz);
} else {
cdai->provsiz = device->rcap_len;
if (device->rcap_len == 0)
break;
amt = device->rcap_len;
if (cdai->provsiz > cdai->bufsiz)
amt = cdai->bufsiz;
memcpy(cdai->buf, device->rcap_buf, amt);
}
break;
default:
return;
}
start_ccb->ccb_h.status = CAM_REQ_CMP;
if (cdai->flags & CDAI_FLAG_STORE) {
xpt_async(AC_ADVINFO_CHANGED, start_ccb->ccb_h.path,
(void *)(uintptr_t)cdai->buftype);
}
}
static void
scsi_action(union ccb *start_ccb)
{
switch (start_ccb->ccb_h.func_code) {
case XPT_SET_TRAN_SETTINGS:
{
scsi_set_transfer_settings(&start_ccb->cts,
start_ccb->ccb_h.path,
/*async_update*/FALSE);
break;
}
case XPT_SCAN_BUS:
case XPT_SCAN_TGT:
scsi_scan_bus(start_ccb->ccb_h.path->periph, start_ccb);
break;
case XPT_SCAN_LUN:
scsi_scan_lun(start_ccb->ccb_h.path->periph,
start_ccb->ccb_h.path, start_ccb->crcn.flags,
start_ccb);
break;
case XPT_DEV_ADVINFO:
{
scsi_dev_advinfo(start_ccb);
break;
}
default:
xpt_action_default(start_ccb);
break;
}
}
static void
scsi_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_path *path,
int async_update)
{
struct ccb_pathinq cpi;
struct ccb_trans_settings cur_cts;
struct ccb_trans_settings_scsi *scsi;
struct ccb_trans_settings_scsi *cur_scsi;
struct scsi_inquiry_data *inq_data;
struct cam_ed *device;
if (path == NULL || (device = path->device) == NULL) {
cts->ccb_h.status = CAM_PATH_INVALID;
xpt_done((union ccb *)cts);
return;
}
if (cts->protocol == PROTO_UNKNOWN
|| cts->protocol == PROTO_UNSPECIFIED) {
cts->protocol = device->protocol;
cts->protocol_version = device->protocol_version;
}
if (cts->protocol_version == PROTO_VERSION_UNKNOWN
|| cts->protocol_version == PROTO_VERSION_UNSPECIFIED)
cts->protocol_version = device->protocol_version;
if (cts->protocol != device->protocol) {
xpt_print(path, "Uninitialized Protocol %x:%x?\n",
cts->protocol, device->protocol);
cts->protocol = device->protocol;
}
if (cts->protocol_version > device->protocol_version) {
if (bootverbose) {
xpt_print(path, "Down reving Protocol "
"Version from %d to %d?\n", cts->protocol_version,
device->protocol_version);
}
cts->protocol_version = device->protocol_version;
}
if (cts->transport == XPORT_UNKNOWN
|| cts->transport == XPORT_UNSPECIFIED) {
cts->transport = device->transport;
cts->transport_version = device->transport_version;
}
if (cts->transport_version == XPORT_VERSION_UNKNOWN
|| cts->transport_version == XPORT_VERSION_UNSPECIFIED)
cts->transport_version = device->transport_version;
if (cts->transport != device->transport) {
xpt_print(path, "Uninitialized Transport %x:%x?\n",
cts->transport, device->transport);
cts->transport = device->transport;
}
if (cts->transport_version > device->transport_version) {
if (bootverbose) {
xpt_print(path, "Down reving Transport "
"Version from %d to %d?\n", cts->transport_version,
device->transport_version);
}
cts->transport_version = device->transport_version;
}
/*
* Nothing more of interest to do unless
* this is a device connected via the
* SCSI protocol.
*/
if (cts->protocol != PROTO_SCSI) {
if (async_update == FALSE)
xpt_action_default((union ccb *)cts);
return;
}
inq_data = &device->inq_data;
scsi = &cts->proto_specific.scsi;
xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
/* SCSI specific sanity checking */
if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0
|| (INQ_DATA_TQ_ENABLED(inq_data)) == 0
|| (device->queue_flags & SCP_QUEUE_DQUE) != 0
|| (device->mintags == 0)) {
/*
* Can't tag on hardware that doesn't support tags,
* doesn't have it enabled, or has broken tag support.
*/
scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
}
if (async_update == FALSE) {
/*
* Perform sanity checking against what the
* controller and device can do.
*/
xpt_setup_ccb(&cur_cts.ccb_h, path, CAM_PRIORITY_NONE);
cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
cur_cts.type = cts->type;
xpt_action((union ccb *)&cur_cts);
if (cam_ccb_status((union ccb *)&cur_cts) != CAM_REQ_CMP) {
return;
}
cur_scsi = &cur_cts.proto_specific.scsi;
if ((scsi->valid & CTS_SCSI_VALID_TQ) == 0) {
scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
scsi->flags |= cur_scsi->flags & CTS_SCSI_FLAGS_TAG_ENB;
}
if ((cur_scsi->valid & CTS_SCSI_VALID_TQ) == 0)
scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
}
/* SPI specific sanity checking */
if (cts->transport == XPORT_SPI && async_update == FALSE) {
u_int spi3caps;
struct ccb_trans_settings_spi *spi;
struct ccb_trans_settings_spi *cur_spi;
spi = &cts->xport_specific.spi;
cur_spi = &cur_cts.xport_specific.spi;
/* Fill in any gaps in what the user gave us */
if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
spi->sync_period = cur_spi->sync_period;
if ((cur_spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
spi->sync_period = 0;
if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
spi->sync_offset = cur_spi->sync_offset;
if ((cur_spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
spi->sync_offset = 0;
if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
spi->ppr_options = cur_spi->ppr_options;
if ((cur_spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
spi->ppr_options = 0;
if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
spi->bus_width = cur_spi->bus_width;
if ((cur_spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
spi->bus_width = 0;
if ((spi->valid & CTS_SPI_VALID_DISC) == 0) {
spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
spi->flags |= cur_spi->flags & CTS_SPI_FLAGS_DISC_ENB;
}
if ((cur_spi->valid & CTS_SPI_VALID_DISC) == 0)
spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
&& (inq_data->flags & SID_Sync) == 0
&& cts->type == CTS_TYPE_CURRENT_SETTINGS)
|| ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0)) {
/* Force async */
spi->sync_period = 0;
spi->sync_offset = 0;
}
switch (spi->bus_width) {
case MSG_EXT_WDTR_BUS_32_BIT:
if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
|| (inq_data->flags & SID_WBus32) != 0
|| cts->type == CTS_TYPE_USER_SETTINGS)
&& (cpi.hba_inquiry & PI_WIDE_32) != 0)
break;
/* Fall Through to 16-bit */
case MSG_EXT_WDTR_BUS_16_BIT:
if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
|| (inq_data->flags & SID_WBus16) != 0
|| cts->type == CTS_TYPE_USER_SETTINGS)
&& (cpi.hba_inquiry & PI_WIDE_16) != 0) {
spi->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 */
spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
break;
}
spi3caps = cpi.xport_specific.spi.ppr_options;
if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
&& cts->type == CTS_TYPE_CURRENT_SETTINGS)
spi3caps &= inq_data->spi3data;
if ((spi3caps & SID_SPI_CLOCK_DT) == 0)
spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
if ((spi3caps & SID_SPI_IUS) == 0)
spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
if ((spi3caps & SID_SPI_QAS) == 0)
spi->ppr_options &= ~MSG_EXT_PPR_QAS_REQ;
/* No SPI Transfer settings are allowed unless we are wide */
if (spi->bus_width == 0)
spi->ppr_options = 0;
if ((spi->valid & CTS_SPI_VALID_DISC)
&& ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) == 0)) {
/*
* Can't tag queue without disconnection.
*/
scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
scsi->valid |= CTS_SCSI_VALID_TQ;
}
/*
* 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 (cts->type == CTS_TYPE_CURRENT_SETTINGS
&& (device->inq_flags & SID_CmdQue) != 0
&& (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
&& (spi->flags & (CTS_SPI_VALID_SYNC_RATE|
CTS_SPI_VALID_SYNC_OFFSET|
CTS_SPI_VALID_BUS_WIDTH)) != 0)
scsi_toggle_tags(path);
}
if (cts->type == CTS_TYPE_CURRENT_SETTINGS
&& (scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
int device_tagenb;
/*
* 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;
if (((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
&& device_tagenb == FALSE)
|| ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) == 0
&& device_tagenb == TRUE)) {
if ((scsi->flags & CTS_SCSI_FLAGS_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_stop_tags(path);
}
}
}
if (async_update == FALSE)
xpt_action_default((union ccb *)cts);
}
static void
scsi_toggle_tags(struct cam_path *path)
{
struct cam_ed *dev;
/*
* 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.
*/
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)) {
struct ccb_trans_settings cts;
xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
cts.protocol = PROTO_SCSI;
cts.protocol_version = PROTO_VERSION_UNSPECIFIED;
cts.transport = XPORT_UNSPECIFIED;
cts.transport_version = XPORT_VERSION_UNSPECIFIED;
cts.proto_specific.scsi.flags = 0;
cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ;
scsi_set_transfer_settings(&cts, path,
/*async_update*/TRUE);
cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB;
scsi_set_transfer_settings(&cts, path,
/*async_update*/TRUE);
}
}
/*
* Handle any per-device event notifications that require action by the XPT.
*/
static void
scsi_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target,
struct cam_ed *device, void *async_arg)
{
cam_status status;
struct cam_path newpath;
/*
* We only need to handle events for real devices.
*/
if (target->target_id == CAM_TARGET_WILDCARD
|| device->lun_id == CAM_LUN_WILDCARD)
return;
/*
* We need our own path with wildcards expanded to
* handle certain types of events.
*/
if ((async_code == AC_SENT_BDR)
|| (async_code == AC_BUS_RESET)
|| (async_code == AC_INQ_CHANGED))
status = xpt_compile_path(&newpath, NULL,
bus->path_id,
target->target_id,
device->lun_id);
else
status = CAM_REQ_CMP_ERR;
if (status == CAM_REQ_CMP) {
/*
* Allow transfer negotiation to occur in a
* tag free environment and after settle delay.
*/
if (async_code == AC_SENT_BDR
|| async_code == AC_BUS_RESET) {
cam_freeze_devq(&newpath);
cam_release_devq(&newpath,
RELSIM_RELEASE_AFTER_TIMEOUT,
/*reduction*/0,
/*timeout*/scsi_delay,
/*getcount_only*/0);
scsi_toggle_tags(&newpath);
}
if (async_code == AC_INQ_CHANGED) {
/*
* 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.
*/
scsi_scan_lun(newpath.periph, &newpath,
CAM_EXPECT_INQ_CHANGE, NULL);
}
xpt_release_path(&newpath);
} else if (async_code == AC_LOST_DEVICE &&
(device->flags & CAM_DEV_UNCONFIGURED) == 0) {
device->flags |= CAM_DEV_UNCONFIGURED;
xpt_release_device(device);
} else if (async_code == AC_TRANSFER_NEG) {
struct ccb_trans_settings *settings;
struct cam_path path;
settings = (struct ccb_trans_settings *)async_arg;
xpt_compile_path(&path, NULL, bus->path_id, target->target_id,
device->lun_id);
scsi_set_transfer_settings(settings, &path,
/*async_update*/TRUE);
xpt_release_path(&path);
}
}
static void
scsi_announce_periph(struct cam_periph *periph)
{
struct ccb_pathinq cpi;
struct ccb_trans_settings cts;
struct cam_path *path = periph->path;
u_int speed;
u_int freq;
u_int mb;
cam_periph_assert(periph, MA_OWNED);
xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NORMAL);
cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
cts.type = CTS_TYPE_CURRENT_SETTINGS;
xpt_action((union ccb*)&cts);
if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP)
return;
/* Ask the SIM for its base transfer speed */
xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NORMAL);
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
/* Report connection speed */
speed = cpi.base_transfer_speed;
freq = 0;
if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
struct ccb_trans_settings_spi *spi =
&cts.xport_specific.spi;
if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0
&& spi->sync_offset != 0) {
freq = scsi_calc_syncsrate(spi->sync_period);
speed = freq;
}
if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0)
speed *= (0x01 << spi->bus_width);
}
if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
struct ccb_trans_settings_fc *fc =
&cts.xport_specific.fc;
if (fc->valid & CTS_FC_VALID_SPEED)
speed = fc->bitrate;
}
if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SAS) {
struct ccb_trans_settings_sas *sas =
&cts.xport_specific.sas;
if (sas->valid & CTS_SAS_VALID_SPEED)
speed = sas->bitrate;
}
mb = speed / 1000;
if (mb > 0)
printf("%s%d: %d.%03dMB/s transfers",
periph->periph_name, periph->unit_number,
mb, speed % 1000);
else
printf("%s%d: %dKB/s transfers", periph->periph_name,
periph->unit_number, speed);
/* Report additional information about SPI connections */
if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
struct ccb_trans_settings_spi *spi;
spi = &cts.xport_specific.spi;
if (freq != 0) {
printf(" (%d.%03dMHz%s, offset %d", freq / 1000,
freq % 1000,
(spi->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
? " DT" : "",
spi->sync_offset);
}
if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0
&& spi->bus_width > 0) {
if (freq != 0) {
printf(", ");
} else {
printf(" (");
}
printf("%dbit)", 8 * (0x01 << spi->bus_width));
} else if (freq != 0) {
printf(")");
}
}
if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
struct ccb_trans_settings_fc *fc;
fc = &cts.xport_specific.fc;
if (fc->valid & CTS_FC_VALID_WWNN)
printf(" WWNN 0x%llx", (long long) fc->wwnn);
if (fc->valid & CTS_FC_VALID_WWPN)
printf(" WWPN 0x%llx", (long long) fc->wwpn);
if (fc->valid & CTS_FC_VALID_PORT)
printf(" PortID 0x%x", fc->port);
}
printf("\n");
}
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