mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-14 10:09:48 +00:00
e39756439c
It was not discussed and should probably not happen. Requested by: msmith and others
771 lines
18 KiB
C
771 lines
18 KiB
C
/*
|
|
* Implementation of SCSI Processor Target Peripheral driver for CAM.
|
|
*
|
|
* Copyright (c) 1998 Justin T. Gibbs.
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/queue.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/types.h>
|
|
#include <sys/bio.h>
|
|
#include <sys/devicestat.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/ptio.h>
|
|
|
|
#include <cam/cam.h>
|
|
#include <cam/cam_ccb.h>
|
|
#include <cam/cam_extend.h>
|
|
#include <cam/cam_periph.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_pt.h>
|
|
|
|
#include "opt_pt.h"
|
|
|
|
typedef enum {
|
|
PT_STATE_PROBE,
|
|
PT_STATE_NORMAL
|
|
} pt_state;
|
|
|
|
typedef enum {
|
|
PT_FLAG_NONE = 0x00,
|
|
PT_FLAG_OPEN = 0x01,
|
|
PT_FLAG_DEVICE_INVALID = 0x02,
|
|
PT_FLAG_RETRY_UA = 0x04
|
|
} pt_flags;
|
|
|
|
typedef enum {
|
|
PT_CCB_BUFFER_IO = 0x01,
|
|
PT_CCB_WAITING = 0x02,
|
|
PT_CCB_RETRY_UA = 0x04,
|
|
PT_CCB_BUFFER_IO_UA = PT_CCB_BUFFER_IO|PT_CCB_RETRY_UA
|
|
} pt_ccb_state;
|
|
|
|
/* Offsets into our private area for storing information */
|
|
#define ccb_state ppriv_field0
|
|
#define ccb_bp ppriv_ptr1
|
|
|
|
struct pt_softc {
|
|
struct bio_queue_head bio_queue;
|
|
struct devstat device_stats;
|
|
LIST_HEAD(, ccb_hdr) pending_ccbs;
|
|
pt_state state;
|
|
pt_flags flags;
|
|
union ccb saved_ccb;
|
|
int io_timeout;
|
|
dev_t dev;
|
|
};
|
|
|
|
static d_open_t ptopen;
|
|
static d_close_t ptclose;
|
|
static d_strategy_t ptstrategy;
|
|
static periph_init_t ptinit;
|
|
static void ptasync(void *callback_arg, u_int32_t code,
|
|
struct cam_path *path, void *arg);
|
|
static periph_ctor_t ptctor;
|
|
static periph_oninv_t ptoninvalidate;
|
|
static periph_dtor_t ptdtor;
|
|
static periph_start_t ptstart;
|
|
static void ptdone(struct cam_periph *periph,
|
|
union ccb *done_ccb);
|
|
static d_ioctl_t ptioctl;
|
|
static int pterror(union ccb *ccb, u_int32_t cam_flags,
|
|
u_int32_t sense_flags);
|
|
|
|
void scsi_send_receive(struct ccb_scsiio *csio, u_int32_t retries,
|
|
void (*cbfcnp)(struct cam_periph *, union ccb *),
|
|
u_int tag_action, int readop, u_int byte2,
|
|
u_int32_t xfer_len, u_int8_t *data_ptr,
|
|
u_int8_t sense_len, u_int32_t timeout);
|
|
|
|
static struct periph_driver ptdriver =
|
|
{
|
|
ptinit, "pt",
|
|
TAILQ_HEAD_INITIALIZER(ptdriver.units), /* generation */ 0
|
|
};
|
|
|
|
DATA_SET(periphdriver_set, ptdriver);
|
|
|
|
#define PT_CDEV_MAJOR 61
|
|
|
|
static struct cdevsw pt_cdevsw = {
|
|
/* open */ ptopen,
|
|
/* close */ ptclose,
|
|
/* read */ physread,
|
|
/* write */ physwrite,
|
|
/* ioctl */ ptioctl,
|
|
/* poll */ nopoll,
|
|
/* mmap */ nommap,
|
|
/* strategy */ ptstrategy,
|
|
/* name */ "pt",
|
|
/* maj */ PT_CDEV_MAJOR,
|
|
/* dump */ nodump,
|
|
/* psize */ nopsize,
|
|
/* flags */ 0,
|
|
/* bmaj */ -1
|
|
};
|
|
|
|
static struct extend_array *ptperiphs;
|
|
|
|
#ifndef SCSI_PT_DEFAULT_TIMEOUT
|
|
#define SCSI_PT_DEFAULT_TIMEOUT 60
|
|
#endif
|
|
|
|
static int
|
|
ptopen(dev_t dev, int flags, int fmt, struct proc *p)
|
|
{
|
|
struct cam_periph *periph;
|
|
struct pt_softc *softc;
|
|
int unit;
|
|
int error;
|
|
int s;
|
|
|
|
unit = minor(dev);
|
|
periph = cam_extend_get(ptperiphs, unit);
|
|
if (periph == NULL)
|
|
return (ENXIO);
|
|
|
|
softc = (struct pt_softc *)periph->softc;
|
|
|
|
s = splsoftcam();
|
|
if (softc->flags & PT_FLAG_DEVICE_INVALID) {
|
|
splx(s);
|
|
return(ENXIO);
|
|
}
|
|
|
|
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
|
|
("ptopen: dev=%s (unit %d)\n", devtoname(dev), unit));
|
|
|
|
if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) {
|
|
splx(s);
|
|
return (error); /* error code from tsleep */
|
|
}
|
|
|
|
splx(s);
|
|
|
|
if ((softc->flags & PT_FLAG_OPEN) == 0) {
|
|
if (cam_periph_acquire(periph) != CAM_REQ_CMP)
|
|
error = ENXIO;
|
|
else
|
|
softc->flags |= PT_FLAG_OPEN;
|
|
} else
|
|
error = EBUSY;
|
|
|
|
cam_periph_unlock(periph);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
ptclose(dev_t dev, int flag, int fmt, struct proc *p)
|
|
{
|
|
struct cam_periph *periph;
|
|
struct pt_softc *softc;
|
|
int unit;
|
|
int error;
|
|
|
|
unit = minor(dev);
|
|
periph = cam_extend_get(ptperiphs, unit);
|
|
if (periph == NULL)
|
|
return (ENXIO);
|
|
|
|
softc = (struct pt_softc *)periph->softc;
|
|
|
|
if ((error = cam_periph_lock(periph, PRIBIO)) != 0)
|
|
return (error); /* error code from tsleep */
|
|
|
|
softc->flags &= ~PT_FLAG_OPEN;
|
|
cam_periph_unlock(periph);
|
|
cam_periph_release(periph);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Actually translate the requested transfer into one the physical driver
|
|
* can understand. The transfer is described by a buf and will include
|
|
* only one physical transfer.
|
|
*/
|
|
static void
|
|
ptstrategy(struct bio *bp)
|
|
{
|
|
struct cam_periph *periph;
|
|
struct pt_softc *softc;
|
|
u_int unit;
|
|
int s;
|
|
|
|
unit = minor(bp->bio_dev);
|
|
periph = cam_extend_get(ptperiphs, unit);
|
|
if (periph == NULL) {
|
|
bp->bio_error = ENXIO;
|
|
goto bad;
|
|
}
|
|
softc = (struct pt_softc *)periph->softc;
|
|
|
|
/*
|
|
* Mask interrupts so that the pack cannot be invalidated until
|
|
* after we are in the queue. Otherwise, we might not properly
|
|
* clean up one of the buffers.
|
|
*/
|
|
s = splbio();
|
|
|
|
/*
|
|
* If the device has been made invalid, error out
|
|
*/
|
|
if ((softc->flags & PT_FLAG_DEVICE_INVALID)) {
|
|
splx(s);
|
|
bp->bio_error = ENXIO;
|
|
goto bad;
|
|
}
|
|
|
|
/*
|
|
* Place it in the queue of disk activities for this disk
|
|
*/
|
|
bioq_insert_tail(&softc->bio_queue, bp);
|
|
|
|
splx(s);
|
|
|
|
/*
|
|
* Schedule ourselves for performing the work.
|
|
*/
|
|
xpt_schedule(periph, /* XXX priority */1);
|
|
|
|
return;
|
|
bad:
|
|
bp->bio_flags |= BIO_ERROR;
|
|
|
|
/*
|
|
* Correctly set the buf to indicate a completed xfer
|
|
*/
|
|
bp->bio_resid = bp->bio_bcount;
|
|
biodone(bp);
|
|
}
|
|
|
|
static void
|
|
ptinit(void)
|
|
{
|
|
cam_status status;
|
|
struct cam_path *path;
|
|
|
|
/*
|
|
* Create our extend array for storing the devices we attach to.
|
|
*/
|
|
ptperiphs = cam_extend_new();
|
|
if (ptperiphs == NULL) {
|
|
printf("pt: Failed to alloc extend array!\n");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Install a global async callback. This callback will
|
|
* receive async callbacks like "new device found".
|
|
*/
|
|
status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
|
|
CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
|
|
|
|
if (status == CAM_REQ_CMP) {
|
|
struct ccb_setasync csa;
|
|
|
|
xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
|
|
csa.ccb_h.func_code = XPT_SASYNC_CB;
|
|
csa.event_enable = AC_FOUND_DEVICE;
|
|
csa.callback = ptasync;
|
|
csa.callback_arg = NULL;
|
|
xpt_action((union ccb *)&csa);
|
|
status = csa.ccb_h.status;
|
|
xpt_free_path(path);
|
|
}
|
|
|
|
if (status != CAM_REQ_CMP) {
|
|
printf("pt: Failed to attach master async callback "
|
|
"due to status 0x%x!\n", status);
|
|
}
|
|
}
|
|
|
|
static cam_status
|
|
ptctor(struct cam_periph *periph, void *arg)
|
|
{
|
|
struct pt_softc *softc;
|
|
struct ccb_setasync csa;
|
|
struct ccb_getdev *cgd;
|
|
|
|
cgd = (struct ccb_getdev *)arg;
|
|
if (periph == NULL) {
|
|
printf("ptregister: periph was NULL!!\n");
|
|
return(CAM_REQ_CMP_ERR);
|
|
}
|
|
|
|
if (cgd == NULL) {
|
|
printf("ptregister: no getdev CCB, can't register device\n");
|
|
return(CAM_REQ_CMP_ERR);
|
|
}
|
|
|
|
softc = (struct pt_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT);
|
|
|
|
if (softc == NULL) {
|
|
printf("daregister: Unable to probe new device. "
|
|
"Unable to allocate softc\n");
|
|
return(CAM_REQ_CMP_ERR);
|
|
}
|
|
|
|
bzero(softc, sizeof(*softc));
|
|
LIST_INIT(&softc->pending_ccbs);
|
|
softc->state = PT_STATE_NORMAL;
|
|
bioq_init(&softc->bio_queue);
|
|
|
|
softc->io_timeout = SCSI_PT_DEFAULT_TIMEOUT * 1000;
|
|
|
|
periph->softc = softc;
|
|
|
|
cam_extend_set(ptperiphs, periph->unit_number, periph);
|
|
|
|
devstat_add_entry(&softc->device_stats, "pt",
|
|
periph->unit_number, 0,
|
|
DEVSTAT_NO_BLOCKSIZE,
|
|
SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
|
|
DEVSTAT_PRIORITY_OTHER);
|
|
|
|
softc->dev = make_dev(&pt_cdevsw, periph->unit_number, UID_ROOT,
|
|
GID_OPERATOR, 0600, "%s%d", periph->periph_name,
|
|
periph->unit_number);
|
|
/*
|
|
* Add async callbacks for bus reset and
|
|
* bus device reset calls. I don't bother
|
|
* checking if this fails as, in most cases,
|
|
* the system will function just fine without
|
|
* them and the only alternative would be to
|
|
* not attach the device on failure.
|
|
*/
|
|
xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
|
|
csa.ccb_h.func_code = XPT_SASYNC_CB;
|
|
csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
|
|
csa.callback = ptasync;
|
|
csa.callback_arg = periph;
|
|
xpt_action((union ccb *)&csa);
|
|
|
|
/* Tell the user we've attached to the device */
|
|
xpt_announce_periph(periph, NULL);
|
|
|
|
return(CAM_REQ_CMP);
|
|
}
|
|
|
|
static void
|
|
ptoninvalidate(struct cam_periph *periph)
|
|
{
|
|
int s;
|
|
struct pt_softc *softc;
|
|
struct bio *q_bp;
|
|
struct ccb_setasync csa;
|
|
|
|
softc = (struct pt_softc *)periph->softc;
|
|
|
|
/*
|
|
* De-register any async callbacks.
|
|
*/
|
|
xpt_setup_ccb(&csa.ccb_h, periph->path,
|
|
/* priority */ 5);
|
|
csa.ccb_h.func_code = XPT_SASYNC_CB;
|
|
csa.event_enable = 0;
|
|
csa.callback = ptasync;
|
|
csa.callback_arg = periph;
|
|
xpt_action((union ccb *)&csa);
|
|
|
|
softc->flags |= PT_FLAG_DEVICE_INVALID;
|
|
|
|
/*
|
|
* Although the oninvalidate() routines are always called at
|
|
* splsoftcam, we need to be at splbio() here to keep the buffer
|
|
* queue from being modified while we traverse it.
|
|
*/
|
|
s = splbio();
|
|
|
|
/*
|
|
* Return all queued I/O with ENXIO.
|
|
* XXX Handle any transactions queued to the card
|
|
* with XPT_ABORT_CCB.
|
|
*/
|
|
while ((q_bp = bioq_first(&softc->bio_queue)) != NULL){
|
|
bioq_remove(&softc->bio_queue, q_bp);
|
|
q_bp->bio_resid = q_bp->bio_bcount;
|
|
q_bp->bio_error = ENXIO;
|
|
q_bp->bio_flags |= BIO_ERROR;
|
|
biodone(q_bp);
|
|
}
|
|
|
|
splx(s);
|
|
|
|
xpt_print_path(periph->path);
|
|
printf("lost device\n");
|
|
}
|
|
|
|
static void
|
|
ptdtor(struct cam_periph *periph)
|
|
{
|
|
struct pt_softc *softc;
|
|
|
|
softc = (struct pt_softc *)periph->softc;
|
|
|
|
devstat_remove_entry(&softc->device_stats);
|
|
|
|
destroy_dev(softc->dev);
|
|
|
|
cam_extend_release(ptperiphs, periph->unit_number);
|
|
xpt_print_path(periph->path);
|
|
printf("removing device entry\n");
|
|
free(softc, M_DEVBUF);
|
|
}
|
|
|
|
static void
|
|
ptasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg)
|
|
{
|
|
struct cam_periph *periph;
|
|
|
|
periph = (struct cam_periph *)callback_arg;
|
|
switch (code) {
|
|
case AC_FOUND_DEVICE:
|
|
{
|
|
struct ccb_getdev *cgd;
|
|
cam_status status;
|
|
|
|
cgd = (struct ccb_getdev *)arg;
|
|
|
|
if (SID_TYPE(&cgd->inq_data) != T_PROCESSOR)
|
|
break;
|
|
|
|
/*
|
|
* Allocate a peripheral instance for
|
|
* this device and start the probe
|
|
* process.
|
|
*/
|
|
status = cam_periph_alloc(ptctor, ptoninvalidate, ptdtor,
|
|
ptstart, "pt", CAM_PERIPH_BIO,
|
|
cgd->ccb_h.path, ptasync,
|
|
AC_FOUND_DEVICE, cgd);
|
|
|
|
if (status != CAM_REQ_CMP
|
|
&& status != CAM_REQ_INPROG)
|
|
printf("ptasync: Unable to attach to new device "
|
|
"due to status 0x%x\n", status);
|
|
break;
|
|
}
|
|
case AC_SENT_BDR:
|
|
case AC_BUS_RESET:
|
|
{
|
|
struct pt_softc *softc;
|
|
struct ccb_hdr *ccbh;
|
|
int s;
|
|
|
|
softc = (struct pt_softc *)periph->softc;
|
|
s = splsoftcam();
|
|
/*
|
|
* Don't fail on the expected unit attention
|
|
* that will occur.
|
|
*/
|
|
softc->flags |= PT_FLAG_RETRY_UA;
|
|
for (ccbh = LIST_FIRST(&softc->pending_ccbs);
|
|
ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le))
|
|
ccbh->ccb_state |= PT_CCB_RETRY_UA;
|
|
splx(s);
|
|
/* FALLTHROUGH */
|
|
}
|
|
default:
|
|
cam_periph_async(periph, code, path, arg);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
ptstart(struct cam_periph *periph, union ccb *start_ccb)
|
|
{
|
|
struct pt_softc *softc;
|
|
struct bio *bp;
|
|
int s;
|
|
|
|
softc = (struct pt_softc *)periph->softc;
|
|
|
|
/*
|
|
* See if there is a buf with work for us to do..
|
|
*/
|
|
s = splbio();
|
|
bp = bioq_first(&softc->bio_queue);
|
|
if (periph->immediate_priority <= periph->pinfo.priority) {
|
|
CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
|
|
("queuing for immediate ccb\n"));
|
|
start_ccb->ccb_h.ccb_state = PT_CCB_WAITING;
|
|
SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
|
|
periph_links.sle);
|
|
periph->immediate_priority = CAM_PRIORITY_NONE;
|
|
splx(s);
|
|
wakeup(&periph->ccb_list);
|
|
} else if (bp == NULL) {
|
|
splx(s);
|
|
xpt_release_ccb(start_ccb);
|
|
} else {
|
|
int oldspl;
|
|
|
|
bioq_remove(&softc->bio_queue, bp);
|
|
|
|
devstat_start_transaction(&softc->device_stats);
|
|
|
|
scsi_send_receive(&start_ccb->csio,
|
|
/*retries*/4,
|
|
ptdone,
|
|
MSG_SIMPLE_Q_TAG,
|
|
bp->bio_cmd == BIO_READ,
|
|
/*byte2*/0,
|
|
bp->bio_bcount,
|
|
bp->bio_data,
|
|
/*sense_len*/SSD_FULL_SIZE,
|
|
/*timeout*/softc->io_timeout);
|
|
|
|
start_ccb->ccb_h.ccb_state = PT_CCB_BUFFER_IO;
|
|
|
|
/*
|
|
* Block out any asyncronous callbacks
|
|
* while we touch the pending ccb list.
|
|
*/
|
|
oldspl = splcam();
|
|
LIST_INSERT_HEAD(&softc->pending_ccbs, &start_ccb->ccb_h,
|
|
periph_links.le);
|
|
splx(oldspl);
|
|
|
|
start_ccb->ccb_h.ccb_bp = bp;
|
|
bp = bioq_first(&softc->bio_queue);
|
|
splx(s);
|
|
|
|
xpt_action(start_ccb);
|
|
|
|
if (bp != NULL) {
|
|
/* Have more work to do, so ensure we stay scheduled */
|
|
xpt_schedule(periph, /* XXX priority */1);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
ptdone(struct cam_periph *periph, union ccb *done_ccb)
|
|
{
|
|
struct pt_softc *softc;
|
|
struct ccb_scsiio *csio;
|
|
|
|
softc = (struct pt_softc *)periph->softc;
|
|
csio = &done_ccb->csio;
|
|
switch (csio->ccb_h.ccb_state) {
|
|
case PT_CCB_BUFFER_IO:
|
|
case PT_CCB_BUFFER_IO_UA:
|
|
{
|
|
struct bio *bp;
|
|
int oldspl;
|
|
|
|
bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
|
|
if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
|
|
int error;
|
|
int s;
|
|
int sf;
|
|
|
|
if ((csio->ccb_h.ccb_state & PT_CCB_RETRY_UA) != 0)
|
|
sf = SF_RETRY_UA;
|
|
else
|
|
sf = 0;
|
|
|
|
sf |= SF_RETRY_SELTO;
|
|
|
|
if ((error = pterror(done_ccb, 0, sf)) == ERESTART) {
|
|
/*
|
|
* A retry was scheuled, so
|
|
* just return.
|
|
*/
|
|
return;
|
|
}
|
|
if (error != 0) {
|
|
struct bio *q_bp;
|
|
|
|
s = splbio();
|
|
|
|
if (error == ENXIO) {
|
|
/*
|
|
* Catastrophic error. Mark our device
|
|
* as invalid.
|
|
*/
|
|
xpt_print_path(periph->path);
|
|
printf("Invalidating device\n");
|
|
softc->flags |= PT_FLAG_DEVICE_INVALID;
|
|
}
|
|
|
|
/*
|
|
* return all queued I/O with EIO, so that
|
|
* the client can retry these I/Os in the
|
|
* proper order should it attempt to recover.
|
|
*/
|
|
while ((q_bp = bioq_first(&softc->bio_queue))
|
|
!= NULL) {
|
|
bioq_remove(&softc->bio_queue, q_bp);
|
|
q_bp->bio_resid = q_bp->bio_bcount;
|
|
q_bp->bio_error = EIO;
|
|
q_bp->bio_flags |= BIO_ERROR;
|
|
biodone(q_bp);
|
|
}
|
|
splx(s);
|
|
bp->bio_error = error;
|
|
bp->bio_resid = bp->bio_bcount;
|
|
bp->bio_flags |= BIO_ERROR;
|
|
} else {
|
|
bp->bio_resid = csio->resid;
|
|
bp->bio_error = 0;
|
|
if (bp->bio_resid != 0) {
|
|
/* Short transfer ??? */
|
|
bp->bio_flags |= BIO_ERROR;
|
|
}
|
|
}
|
|
if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
|
|
cam_release_devq(done_ccb->ccb_h.path,
|
|
/*relsim_flags*/0,
|
|
/*reduction*/0,
|
|
/*timeout*/0,
|
|
/*getcount_only*/0);
|
|
} else {
|
|
bp->bio_resid = csio->resid;
|
|
if (bp->bio_resid != 0)
|
|
bp->bio_flags |= BIO_ERROR;
|
|
}
|
|
|
|
/*
|
|
* Block out any asyncronous callbacks
|
|
* while we touch the pending ccb list.
|
|
*/
|
|
oldspl = splcam();
|
|
LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
|
|
splx(oldspl);
|
|
|
|
devstat_end_transaction_bio(&softc->device_stats, bp);
|
|
biodone(bp);
|
|
break;
|
|
}
|
|
case PT_CCB_WAITING:
|
|
/* Caller will release the CCB */
|
|
wakeup(&done_ccb->ccb_h.cbfcnp);
|
|
return;
|
|
}
|
|
xpt_release_ccb(done_ccb);
|
|
}
|
|
|
|
static int
|
|
pterror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
|
|
{
|
|
struct pt_softc *softc;
|
|
struct cam_periph *periph;
|
|
|
|
periph = xpt_path_periph(ccb->ccb_h.path);
|
|
softc = (struct pt_softc *)periph->softc;
|
|
|
|
return(cam_periph_error(ccb, cam_flags, sense_flags,
|
|
&softc->saved_ccb));
|
|
}
|
|
|
|
static int
|
|
ptioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
|
|
{
|
|
struct cam_periph *periph;
|
|
struct pt_softc *softc;
|
|
int unit;
|
|
int error;
|
|
|
|
unit = minor(dev);
|
|
periph = cam_extend_get(ptperiphs, unit);
|
|
|
|
if (periph == NULL)
|
|
return(ENXIO);
|
|
|
|
softc = (struct pt_softc *)periph->softc;
|
|
|
|
if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) {
|
|
return (error); /* error code from tsleep */
|
|
}
|
|
|
|
switch(cmd) {
|
|
case PTIOCGETTIMEOUT:
|
|
if (softc->io_timeout >= 1000)
|
|
*(int *)addr = softc->io_timeout / 1000;
|
|
else
|
|
*(int *)addr = 0;
|
|
break;
|
|
case PTIOCSETTIMEOUT:
|
|
{
|
|
int s;
|
|
|
|
if (*(int *)addr < 1) {
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
|
|
s = splsoftcam();
|
|
softc->io_timeout = *(int *)addr * 1000;
|
|
splx(s);
|
|
|
|
break;
|
|
}
|
|
default:
|
|
error = cam_periph_ioctl(periph, cmd, addr, pterror);
|
|
break;
|
|
}
|
|
|
|
cam_periph_unlock(periph);
|
|
|
|
return(error);
|
|
}
|
|
|
|
void
|
|
scsi_send_receive(struct ccb_scsiio *csio, u_int32_t retries,
|
|
void (*cbfcnp)(struct cam_periph *, union ccb *),
|
|
u_int tag_action, int readop, u_int byte2,
|
|
u_int32_t xfer_len, u_int8_t *data_ptr, u_int8_t sense_len,
|
|
u_int32_t timeout)
|
|
{
|
|
struct scsi_send_receive *scsi_cmd;
|
|
|
|
scsi_cmd = (struct scsi_send_receive *)&csio->cdb_io.cdb_bytes;
|
|
scsi_cmd->opcode = readop ? RECEIVE : SEND;
|
|
scsi_cmd->byte2 = byte2;
|
|
scsi_ulto3b(xfer_len, scsi_cmd->xfer_len);
|
|
scsi_cmd->control = 0;
|
|
|
|
cam_fill_csio(csio,
|
|
retries,
|
|
cbfcnp,
|
|
/*flags*/readop ? CAM_DIR_IN : CAM_DIR_OUT,
|
|
tag_action,
|
|
data_ptr,
|
|
xfer_len,
|
|
sense_len,
|
|
sizeof(*scsi_cmd),
|
|
timeout);
|
|
}
|