08f1387933
per-protocol. This reduces the number scsi symbols references by cam_xpt significantly, and eliminates all ata / nvme symbols. There's still some NVME / ATA specific code for dealing with XPT_NVME_IO and XPT_ATA_IO respectively, and a bunch of scsi-specific code, but this is progress. Differential Revision: https://reviews.freebsd.org/D7289
212 lines
6.5 KiB
C
212 lines
6.5 KiB
C
/*-
|
|
* Copyright 2009 Scott Long
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _CAM_CAM_XPT_INTERNAL_H
|
|
#define _CAM_CAM_XPT_INTERNAL_H 1
|
|
|
|
#include <sys/taskqueue.h>
|
|
|
|
/* Forward Declarations */
|
|
struct cam_eb;
|
|
struct cam_et;
|
|
struct cam_ed;
|
|
|
|
typedef struct cam_ed * (*xpt_alloc_device_func)(struct cam_eb *bus,
|
|
struct cam_et *target,
|
|
lun_id_t lun_id);
|
|
typedef void (*xpt_release_device_func)(struct cam_ed *device);
|
|
typedef void (*xpt_action_func)(union ccb *start_ccb);
|
|
typedef void (*xpt_dev_async_func)(u_int32_t async_code,
|
|
struct cam_eb *bus,
|
|
struct cam_et *target,
|
|
struct cam_ed *device,
|
|
void *async_arg);
|
|
typedef void (*xpt_announce_periph_func)(struct cam_periph *periph);
|
|
|
|
struct xpt_xport_ops {
|
|
xpt_alloc_device_func alloc_device;
|
|
xpt_release_device_func reldev;
|
|
xpt_action_func action;
|
|
xpt_dev_async_func async;
|
|
xpt_announce_periph_func announce;
|
|
};
|
|
|
|
struct xpt_xport {
|
|
cam_xport xport;
|
|
const char *name;
|
|
struct xpt_xport_ops *ops;
|
|
};
|
|
|
|
SET_DECLARE(cam_xpt_xport_set, struct xpt_xport);
|
|
#define CAM_XPT_XPORT(data) \
|
|
DATA_SET(cam_xpt_xport_set, data)
|
|
|
|
typedef void (*xpt_proto_announce_func)(struct cam_ed *);
|
|
typedef void (*xpt_proto_debug_out_func)(union ccb *);
|
|
|
|
struct xpt_proto_ops {
|
|
xpt_proto_announce_func announce;
|
|
xpt_proto_announce_func denounce;
|
|
xpt_proto_debug_out_func debug_out;
|
|
};
|
|
|
|
struct xpt_proto {
|
|
cam_proto proto;
|
|
const char *name;
|
|
struct xpt_proto_ops *ops;
|
|
};
|
|
|
|
SET_DECLARE(cam_xpt_proto_set, struct xpt_proto);
|
|
#define CAM_XPT_PROTO(data) \
|
|
DATA_SET(cam_xpt_proto_set, data)
|
|
|
|
|
|
/*
|
|
* 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 {
|
|
cam_pinfo devq_entry;
|
|
TAILQ_ENTRY(cam_ed) links;
|
|
struct cam_et *target;
|
|
struct cam_sim *sim;
|
|
lun_id_t lun_id;
|
|
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 */
|
|
void *quirk; /* Oddities about this device */
|
|
u_int maxtags;
|
|
u_int mintags;
|
|
cam_proto protocol;
|
|
u_int protocol_version;
|
|
cam_xport transport;
|
|
u_int transport_version;
|
|
struct scsi_inquiry_data inq_data;
|
|
uint8_t *supported_vpds;
|
|
uint8_t supported_vpds_len;
|
|
uint32_t device_id_len;
|
|
uint8_t *device_id;
|
|
uint32_t ext_inq_len;
|
|
uint8_t *ext_inq;
|
|
uint8_t physpath_len;
|
|
uint8_t *physpath; /* physical path string form */
|
|
uint32_t rcap_len;
|
|
uint8_t *rcap_buf;
|
|
struct ata_params ident_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_len;
|
|
u_int8_t *serial_num;
|
|
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_TAG_AFTER_COUNT 0x20
|
|
#define CAM_DEV_INQUIRY_DATA_VALID 0x40
|
|
#define CAM_DEV_IN_DV 0x80
|
|
#define CAM_DEV_DV_HIT_BOTTOM 0x100
|
|
#define CAM_DEV_IDENTIFY_DATA_VALID 0x200
|
|
u_int32_t tag_delay_count;
|
|
#define CAM_TAG_DELAY_COUNT 5
|
|
u_int32_t tag_saved_openings;
|
|
u_int32_t refcount;
|
|
struct callout callout;
|
|
STAILQ_ENTRY(cam_ed) highpowerq_entry;
|
|
struct mtx device_mtx;
|
|
struct task device_destroy_task;
|
|
const struct nvme_controller_data *nvme_cdata;
|
|
const struct nvme_namespace_data *nvme_data;
|
|
};
|
|
|
|
/*
|
|
* 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;
|
|
struct timeval last_reset;
|
|
u_int rpl_size;
|
|
struct scsi_report_luns_data *luns;
|
|
struct mtx luns_mtx; /* Protection for luns field. */
|
|
};
|
|
|
|
/*
|
|
* 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;
|
|
struct timeval last_reset;
|
|
u_int32_t flags;
|
|
#define CAM_EB_RUNQ_SCHEDULED 0x01
|
|
u_int32_t refcount;
|
|
u_int generation;
|
|
device_t parent_dev;
|
|
struct xpt_xport *xport;
|
|
struct mtx eb_mtx; /* Bus topology mutex. */
|
|
};
|
|
|
|
struct cam_path {
|
|
struct cam_periph *periph;
|
|
struct cam_eb *bus;
|
|
struct cam_et *target;
|
|
struct cam_ed *device;
|
|
};
|
|
|
|
struct cam_ed * xpt_alloc_device(struct cam_eb *bus,
|
|
struct cam_et *target,
|
|
lun_id_t lun_id);
|
|
void xpt_acquire_device(struct cam_ed *device);
|
|
void xpt_release_device(struct cam_ed *device);
|
|
u_int32_t xpt_dev_ccbq_resize(struct cam_path *path, int newopenings);
|
|
void xpt_start_tags(struct cam_path *path);
|
|
void xpt_stop_tags(struct cam_path *path);
|
|
|
|
MALLOC_DECLARE(M_CAMXPT);
|
|
|
|
#endif
|