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9626b608de
freebsd-nq/sys/cam/scsi/scsi_cd.c
Poul-Henning Kamp 9626b608de Separate the struct bio related stuff out of <sys/buf.h> into 
<sys/bio.h>.

<sys/bio.h> is now a prerequisite for <sys/buf.h> but it shall
not be made a nested include according to bdes teachings on the
subject of nested includes.

Diskdrivers and similar stuff below specfs::strategy() should no
longer need to include <sys/buf.> unless they need caching of data.

Still a few bogus uses of struct buf to track down.

Repocopy by:    peter
2000-05-05 09:59:14 +00:00

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/*
* Copyright (c) 1997 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.
*
* $FreeBSD$
*/
/*
* Portions of this driver taken from the original FreeBSD cd driver.
* Written by Julian Elischer (julian@tfs.com)
* for TRW Financial Systems for use under the MACH(2.5) operating system.
*
* TRW Financial Systems, in accordance with their agreement with Carnegie
* Mellon University, makes this software available to CMU to distribute
* or use in any manner that they see fit as long as this message is kept with
* the software. For this reason TFS also grants any other persons or
* organisations permission to use or modify this software.
*
* TFS supplies this software to be publicly redistributed
* on the understanding that TFS is not responsible for the correct
* functioning of this software in any circumstances.
*
* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
*
* from: cd.c,v 1.83 1997/05/04 15:24:22 joerg Exp $
*/
#include "opt_cd.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bio.h>
#include <sys/conf.h>
#include <sys/disk.h>
#include <sys/malloc.h>
#include <sys/cdio.h>
#include <sys/devicestat.h>
#include <sys/sysctl.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_queue.h>
#include <cam/scsi/scsi_message.h>
#include <cam/scsi/scsi_da.h>
#include <cam/scsi/scsi_cd.h>
#define LEADOUT 0xaa /* leadout toc entry */
struct cd_params {
u_int32_t blksize;
u_long disksize;
};
typedef enum {
CD_Q_NONE = 0x00,
CD_Q_NO_TOUCH = 0x01,
CD_Q_BCD_TRACKS = 0x02,
CD_Q_NO_CHANGER = 0x04,
CD_Q_CHANGER = 0x08
} cd_quirks;
typedef enum {
CD_FLAG_INVALID = 0x001,
CD_FLAG_NEW_DISC = 0x002,
CD_FLAG_DISC_LOCKED = 0x004,
CD_FLAG_DISC_REMOVABLE = 0x008,
CD_FLAG_TAGGED_QUEUING = 0x010,
CD_FLAG_CHANGER = 0x040,
CD_FLAG_ACTIVE = 0x080,
CD_FLAG_SCHED_ON_COMP = 0x100,
CD_FLAG_RETRY_UA = 0x200
} cd_flags;
typedef enum {
CD_CCB_PROBE = 0x01,
CD_CCB_BUFFER_IO = 0x02,
CD_CCB_WAITING = 0x03,
CD_CCB_TYPE_MASK = 0x0F,
CD_CCB_RETRY_UA = 0x10
} cd_ccb_state;
typedef enum {
CHANGER_TIMEOUT_SCHED = 0x01,
CHANGER_SHORT_TMOUT_SCHED = 0x02,
CHANGER_MANUAL_CALL = 0x04,
CHANGER_NEED_TIMEOUT = 0x08
} cd_changer_flags;
#define ccb_state ppriv_field0
#define ccb_bp ppriv_ptr1
typedef enum {
CD_STATE_PROBE,
CD_STATE_NORMAL
} cd_state;
struct cd_softc {
cam_pinfo pinfo;
cd_state state;
volatile cd_flags flags;
struct bio_queue_head bio_queue;
LIST_HEAD(, ccb_hdr) pending_ccbs;
struct cd_params params;
struct disk disk;
union ccb saved_ccb;
cd_quirks quirks;
struct devstat device_stats;
STAILQ_ENTRY(cd_softc) changer_links;
struct cdchanger *changer;
int bufs_left;
struct cam_periph *periph;
};
struct cd_quirk_entry {
struct scsi_inquiry_pattern inq_pat;
cd_quirks quirks;
};
/*
* These quirk entries aren't strictly necessary. Basically, what they do
* is tell cdregister() up front that a device is a changer. Otherwise, it
* will figure that fact out once it sees a LUN on the device that is
* greater than 0. If it is known up front that a device is a changer, all
* I/O to the device will go through the changer scheduling routines, as
* opposed to the "normal" CD code.
*/
static struct cd_quirk_entry cd_quirk_table[] =
{
{
{ T_CDROM, SIP_MEDIA_REMOVABLE, "NRC", "MBR-7", "*"},
/*quirks*/ CD_Q_CHANGER
},
{
{ T_CDROM, SIP_MEDIA_REMOVABLE, "PIONEER", "CD-ROM DRM*",
"*"}, /* quirks */ CD_Q_CHANGER
},
{
{ T_CDROM, SIP_MEDIA_REMOVABLE, "CHINON", "CD-ROM CDS-535","*"},
/* quirks */ CD_Q_BCD_TRACKS
}
};
#ifndef MIN
#define MIN(x,y) ((x<y) ? x : y)
#endif
#define CD_CDEV_MAJOR 15
#define CD_BDEV_MAJOR 6
static d_open_t cdopen;
static d_close_t cdclose;
static d_ioctl_t cdioctl;
static d_strategy_t cdstrategy;
static periph_init_t cdinit;
static periph_ctor_t cdregister;
static periph_dtor_t cdcleanup;
static periph_start_t cdstart;
static periph_oninv_t cdoninvalidate;
static void cdasync(void *callback_arg, u_int32_t code,
struct cam_path *path, void *arg);
static void cdshorttimeout(void *arg);
static void cdschedule(struct cam_periph *periph, int priority);
static void cdrunchangerqueue(void *arg);
static void cdchangerschedule(struct cd_softc *softc);
static int cdrunccb(union ccb *ccb,
int (*error_routine)(union ccb *ccb,
u_int32_t cam_flags,
u_int32_t sense_flags),
u_int32_t cam_flags, u_int32_t sense_flags);
static union ccb *cdgetccb(struct cam_periph *periph,
u_int32_t priority);
static void cddone(struct cam_periph *periph,
union ccb *start_ccb);
static int cderror(union ccb *ccb, u_int32_t cam_flags,
u_int32_t sense_flags);
static void cdprevent(struct cam_periph *periph, int action);
static int cdsize(dev_t dev, u_int32_t *size);
static int cdreadtoc(struct cam_periph *periph, u_int32_t mode,
u_int32_t start, struct cd_toc_entry *data,
u_int32_t len);
static int cdgetmode(struct cam_periph *periph,
struct cd_mode_data *data, u_int32_t page);
static int cdsetmode(struct cam_periph *periph,
struct cd_mode_data *data);
static int cdplay(struct cam_periph *periph, u_int32_t blk,
u_int32_t len);
static int cdreadsubchannel(struct cam_periph *periph,
u_int32_t mode, u_int32_t format,
int track,
struct cd_sub_channel_info *data,
u_int32_t len);
static int cdplaymsf(struct cam_periph *periph, u_int32_t startm,
u_int32_t starts, u_int32_t startf,
u_int32_t endm, u_int32_t ends,
u_int32_t endf);
static int cdplaytracks(struct cam_periph *periph,
u_int32_t strack, u_int32_t sindex,
u_int32_t etrack, u_int32_t eindex);
static int cdpause(struct cam_periph *periph, u_int32_t go);
static int cdstopunit(struct cam_periph *periph, u_int32_t eject);
static int cdstartunit(struct cam_periph *periph);
static struct periph_driver cddriver =
{
cdinit, "cd",
TAILQ_HEAD_INITIALIZER(cddriver.units), /* generation */ 0
};
DATA_SET(periphdriver_set, cddriver);
/* For 2.2-stable support */
#ifndef D_DISK
#define D_DISK 0
#endif
static struct cdevsw cd_cdevsw = {
/* open */ cdopen,
/* close */ cdclose,
/* read */ physread,
/* write */ nowrite,
/* ioctl */ cdioctl,
/* poll */ nopoll,
/* mmap */ nommap,
/* strategy */ cdstrategy,
/* name */ "cd",
/* maj */ CD_CDEV_MAJOR,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ D_DISK,
/* bmaj */ CD_BDEV_MAJOR
};
static struct cdevsw cddisk_cdevsw;
static struct extend_array *cdperiphs;
static int num_changers;
#ifndef CHANGER_MIN_BUSY_SECONDS
#define CHANGER_MIN_BUSY_SECONDS 5
#endif
#ifndef CHANGER_MAX_BUSY_SECONDS
#define CHANGER_MAX_BUSY_SECONDS 15
#endif
static int changer_min_busy_seconds = CHANGER_MIN_BUSY_SECONDS;
static int changer_max_busy_seconds = CHANGER_MAX_BUSY_SECONDS;
/*
* XXX KDM this CAM node should be moved if we ever get more CAM sysctl
* variables.
*/
SYSCTL_NODE(_kern, OID_AUTO, cam, CTLFLAG_RD, 0, "CAM Subsystem");
SYSCTL_NODE(_kern_cam, OID_AUTO, cd, CTLFLAG_RD, 0, "CAM CDROM driver");
SYSCTL_NODE(_kern_cam_cd, OID_AUTO, changer, CTLFLAG_RD, 0, "CD Changer");
SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, min_busy_seconds, CTLFLAG_RW,
&changer_min_busy_seconds, 0, "Minimum changer scheduling quantum");
SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, max_busy_seconds, CTLFLAG_RW,
&changer_max_busy_seconds, 0, "Maximum changer scheduling quantum");
struct cdchanger {
path_id_t path_id;
target_id_t target_id;
int num_devices;
struct camq devq;
struct timeval start_time;
struct cd_softc *cur_device;
struct callout_handle short_handle;
struct callout_handle long_handle;
volatile cd_changer_flags flags;
STAILQ_ENTRY(cdchanger) changer_links;
STAILQ_HEAD(chdevlist, cd_softc) chluns;
};
static STAILQ_HEAD(changerlist, cdchanger) changerq;
void
cdinit(void)
{
cam_status status;
struct cam_path *path;
/*
* Create our extend array for storing the devices we attach to.
*/
cdperiphs = cam_extend_new();
if (cdperiphs == NULL) {
printf("cd: 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 = cdasync;
csa.callback_arg = NULL;
xpt_action((union ccb *)&csa);
status = csa.ccb_h.status;
xpt_free_path(path);
}
if (status != CAM_REQ_CMP) {
printf("cd: Failed to attach master async callback "
"due to status 0x%x!\n", status);
}
}
static void
cdoninvalidate(struct cam_periph *periph)
{
int s;
struct cd_softc *softc;
struct bio *q_bp;
struct ccb_setasync csa;
softc = (struct cd_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 = cdasync;
csa.callback_arg = periph;
xpt_action((union ccb *)&csa);
softc->flags |= CD_FLAG_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);
/*
* If this device is part of a changer, and it was scheduled
* to run, remove it from the run queue since we just nuked
* all of its scheduled I/O.
*/
if ((softc->flags & CD_FLAG_CHANGER)
&& (softc->pinfo.index != CAM_UNQUEUED_INDEX))
camq_remove(&softc->changer->devq, softc->pinfo.index);
xpt_print_path(periph->path);
printf("lost device\n");
}
static void
cdcleanup(struct cam_periph *periph)
{
struct cd_softc *softc;
int s;
softc = (struct cd_softc *)periph->softc;
xpt_print_path(periph->path);
printf("removing device entry\n");
s = splsoftcam();
/*
* In the queued, non-active case, the device in question
* has already been removed from the changer run queue. Since this
* device is active, we need to de-activate it, and schedule
* another device to run. (if there is another one to run)
*/
if ((softc->flags & CD_FLAG_CHANGER)
&& (softc->flags & CD_FLAG_ACTIVE)) {
/*
* The purpose of the short timeout is soley to determine
* whether the current device has finished or not. Well,
* since we're removing the active device, we know that it
* is finished. So, get rid of the short timeout.
* Otherwise, if we're in the time period before the short
* timeout fires, and there are no other devices in the
* queue to run, there won't be any other device put in the
* active slot. i.e., when we call cdrunchangerqueue()
* below, it won't do anything. Then, when the short
* timeout fires, it'll look at the "current device", which
* we are free below, and possibly panic the kernel on a
* bogus pointer reference.
*
* The long timeout doesn't really matter, since we
* decrement the qfrozen_cnt to indicate that there is
* nothing in the active slot now. Therefore, there won't
* be any bogus pointer references there.
*/
if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
untimeout(cdshorttimeout, softc->changer,
softc->changer->short_handle);
softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
}
softc->changer->devq.qfrozen_cnt--;
softc->changer->flags |= CHANGER_MANUAL_CALL;
cdrunchangerqueue(softc->changer);
}
/*
* If we're removing the last device on the changer, go ahead and
* remove the changer device structure.
*/
if ((softc->flags & CD_FLAG_CHANGER)
&& (--softc->changer->num_devices == 0)) {
/*
* Theoretically, there shouldn't be any timeouts left, but
* I'm not completely sure that that will be the case. So,
* it won't hurt to check and see if there are any left.
*/
if (softc->changer->flags & CHANGER_TIMEOUT_SCHED) {
untimeout(cdrunchangerqueue, softc->changer,
softc->changer->long_handle);
softc->changer->flags &= ~CHANGER_TIMEOUT_SCHED;
}
if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
untimeout(cdshorttimeout, softc->changer,
softc->changer->short_handle);
softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
}
STAILQ_REMOVE(&changerq, softc->changer, cdchanger,
changer_links);
xpt_print_path(periph->path);
printf("removing changer entry\n");
free(softc->changer, M_DEVBUF);
num_changers--;
}
devstat_remove_entry(&softc->device_stats);
cam_extend_release(cdperiphs, periph->unit_number);
free(softc, M_DEVBUF);
splx(s);
}
static void
cdasync(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_CDROM
&& SID_TYPE(&cgd->inq_data) != T_WORM)
break;
/*
* Allocate a peripheral instance for
* this device and start the probe
* process.
*/
status = cam_periph_alloc(cdregister, cdoninvalidate,
cdcleanup, cdstart,
"cd", CAM_PERIPH_BIO,
cgd->ccb_h.path, cdasync,
AC_FOUND_DEVICE, cgd);
if (status != CAM_REQ_CMP
&& status != CAM_REQ_INPROG)
printf("cdasync: Unable to attach new device "
"due to status 0x%x\n", status);
break;
}
case AC_SENT_BDR:
case AC_BUS_RESET:
{
struct cd_softc *softc;
struct ccb_hdr *ccbh;
int s;
softc = (struct cd_softc *)periph->softc;
s = splsoftcam();
/*
* Don't fail on the expected unit attention
* that will occur.
*/
softc->flags |= CD_FLAG_RETRY_UA;
for (ccbh = LIST_FIRST(&softc->pending_ccbs);
ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le))
ccbh->ccb_state |= CD_CCB_RETRY_UA;
splx(s);
/* FALLTHROUGH */
}
default:
cam_periph_async(periph, code, path, arg);
break;
}
}
static cam_status
cdregister(struct cam_periph *periph, void *arg)
{
struct cd_softc *softc;
struct ccb_setasync csa;
struct ccb_getdev *cgd;
caddr_t match;
cgd = (struct ccb_getdev *)arg;
if (periph == NULL) {
printf("cdregister: periph was NULL!!\n");
return(CAM_REQ_CMP_ERR);
}
if (cgd == NULL) {
printf("cdregister: no getdev CCB, can't register device\n");
return(CAM_REQ_CMP_ERR);
}
softc = (struct cd_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT);
if (softc == NULL) {
printf("cdregister: 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 = CD_STATE_PROBE;
bioq_init(&softc->bio_queue);
if (SID_IS_REMOVABLE(&cgd->inq_data))
softc->flags |= CD_FLAG_DISC_REMOVABLE;
if ((cgd->inq_data.flags & SID_CmdQue) != 0)
softc->flags |= CD_FLAG_TAGGED_QUEUING;
periph->softc = softc;
softc->periph = periph;
cam_extend_set(cdperiphs, periph->unit_number, periph);
/*
* See if this device has any quirks.
*/
match = cam_quirkmatch((caddr_t)&cgd->inq_data,
(caddr_t)cd_quirk_table,
sizeof(cd_quirk_table)/sizeof(*cd_quirk_table),
sizeof(*cd_quirk_table), scsi_inquiry_match);
if (match != NULL)
softc->quirks = ((struct cd_quirk_entry *)match)->quirks;
else
softc->quirks = CD_Q_NONE;
/*
* We need to register the statistics structure for this device,
* but we don't have the blocksize yet for it. So, we register
* the structure and indicate that we don't have the blocksize
* yet. Unlike other SCSI peripheral drivers, we explicitly set
* the device type here to be CDROM, rather than just ORing in
* the device type. This is because this driver can attach to either
* CDROM or WORM devices, and we want this peripheral driver to
* show up in the devstat list as a CD peripheral driver, not a
* WORM peripheral driver. WORM drives will also have the WORM
* driver attached to them.
*/
devstat_add_entry(&softc->device_stats, "cd",
periph->unit_number, 0,
DEVSTAT_BS_UNAVAILABLE,
DEVSTAT_TYPE_CDROM | DEVSTAT_TYPE_IF_SCSI,
DEVSTAT_PRIORITY_CD);
disk_create(periph->unit_number, &softc->disk,
DSO_NOLABELS | DSO_ONESLICE,
&cd_cdevsw, &cddisk_cdevsw);
/*
* Add an async callback so that we get
* notified if this device goes away.
*/
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 = cdasync;
csa.callback_arg = periph;
xpt_action((union ccb *)&csa);
/*
* If the target lun is greater than 0, we most likely have a CD
* changer device. Check the quirk entries as well, though, just
* in case someone has a CD tower with one lun per drive or
* something like that. Also, if we know up front that a
* particular device is a changer, we can mark it as such starting
* with lun 0, instead of lun 1. It shouldn't be necessary to have
* a quirk entry to define something as a changer, however.
*/
if (((cgd->ccb_h.target_lun > 0)
&& ((softc->quirks & CD_Q_NO_CHANGER) == 0))
|| ((softc->quirks & CD_Q_CHANGER) != 0)) {
struct cdchanger *nchanger;
struct cam_periph *nperiph;
struct cam_path *path;
cam_status status;
int found;
/* Set the changer flag in the current device's softc */
softc->flags |= CD_FLAG_CHANGER;
if (num_changers == 0)
STAILQ_INIT(&changerq);
/*
* Now, look around for an existing changer device with the
* same path and target ID as the current device.
*/
for (found = 0,
nchanger = (struct cdchanger *)STAILQ_FIRST(&changerq);
nchanger != NULL;
nchanger = STAILQ_NEXT(nchanger, changer_links)){
if ((nchanger->path_id == cgd->ccb_h.path_id)
&& (nchanger->target_id == cgd->ccb_h.target_id)) {
found = 1;
break;
}
}
/*
* If we found a matching entry, just add this device to
* the list of devices on this changer.
*/
if (found == 1) {
struct chdevlist *chlunhead;
chlunhead = &nchanger->chluns;
/*
* XXX KDM look at consolidating this code with the
* code below in a separate function.
*/
/*
* Create a path with lun id 0, and see if we can
* find a matching device
*/
status = xpt_create_path(&path, /*periph*/ periph,
cgd->ccb_h.path_id,
cgd->ccb_h.target_id, 0);
if ((status == CAM_REQ_CMP)
&& ((nperiph = cam_periph_find(path, "cd")) != NULL)){
struct cd_softc *nsoftc;
nsoftc = (struct cd_softc *)nperiph->softc;
if ((nsoftc->flags & CD_FLAG_CHANGER) == 0){
nsoftc->flags |= CD_FLAG_CHANGER;
nchanger->num_devices++;
if (camq_resize(&nchanger->devq,
nchanger->num_devices)!=CAM_REQ_CMP){
printf("cdregister: "
"camq_resize "
"failed, changer "
"support may "
"be messed up\n");
}
nsoftc->changer = nchanger;
nsoftc->pinfo.index =CAM_UNQUEUED_INDEX;
STAILQ_INSERT_TAIL(&nchanger->chluns,
nsoftc,changer_links);
}
} else if (status == CAM_REQ_CMP)
xpt_free_path(path);
else {
printf("cdregister: unable to allocate path\n"
"cdregister: changer support may be "
"broken\n");
}
nchanger->num_devices++;
softc->changer = nchanger;
softc->pinfo.index = CAM_UNQUEUED_INDEX;
if (camq_resize(&nchanger->devq,
nchanger->num_devices) != CAM_REQ_CMP) {
printf("cdregister: camq_resize "
"failed, changer support may "
"be messed up\n");
}
STAILQ_INSERT_TAIL(chlunhead, softc, changer_links);
}
/*
* In this case, we don't already have an entry for this
* particular changer, so we need to create one, add it to
* the queue, and queue this device on the list for this
* changer. Before we queue this device, however, we need
* to search for lun id 0 on this target, and add it to the
* queue first, if it exists. (and if it hasn't already
* been marked as part of the changer.)
*/
else {
nchanger = malloc(sizeof(struct cdchanger),
M_DEVBUF, M_NOWAIT);
if (nchanger == NULL) {
softc->flags &= ~CD_FLAG_CHANGER;
printf("cdregister: unable to malloc "
"changer structure\ncdregister: "
"changer support disabled\n");
/*
* Yes, gotos can be gross but in this case
* I think it's justified..
*/
goto cdregisterexit;
}
/* zero the structure */
bzero(nchanger, sizeof(struct cdchanger));
if (camq_init(&nchanger->devq, 1) != 0) {
softc->flags &= ~CD_FLAG_CHANGER;
printf("cdregister: changer support "
"disabled\n");
goto cdregisterexit;
}
num_changers++;
nchanger->path_id = cgd->ccb_h.path_id;
nchanger->target_id = cgd->ccb_h.target_id;
/* this is superfluous, but it makes things clearer */
nchanger->num_devices = 0;
STAILQ_INIT(&nchanger->chluns);
STAILQ_INSERT_TAIL(&changerq, nchanger,
changer_links);
/*
* Create a path with lun id 0, and see if we can
* find a matching device
*/
status = xpt_create_path(&path, /*periph*/ periph,
cgd->ccb_h.path_id,
cgd->ccb_h.target_id, 0);
/*
* If we were able to allocate the path, and if we
* find a matching device and it isn't already
* marked as part of a changer, then we add it to
* the current changer.
*/
if ((status == CAM_REQ_CMP)
&& ((nperiph = cam_periph_find(path, "cd")) != NULL)
&& ((((struct cd_softc *)periph->softc)->flags &
CD_FLAG_CHANGER) == 0)) {
struct cd_softc *nsoftc;
nsoftc = (struct cd_softc *)nperiph->softc;
nsoftc->flags |= CD_FLAG_CHANGER;
nchanger->num_devices++;
if (camq_resize(&nchanger->devq,
nchanger->num_devices) != CAM_REQ_CMP) {
printf("cdregister: camq_resize "
"failed, changer support may "
"be messed up\n");
}
nsoftc->changer = nchanger;
nsoftc->pinfo.index = CAM_UNQUEUED_INDEX;
STAILQ_INSERT_TAIL(&nchanger->chluns,
nsoftc, changer_links);
} else if (status == CAM_REQ_CMP)
xpt_free_path(path);
else {
printf("cdregister: unable to allocate path\n"
"cdregister: changer support may be "
"broken\n");
}
softc->changer = nchanger;
softc->pinfo.index = CAM_UNQUEUED_INDEX;
nchanger->num_devices++;
if (camq_resize(&nchanger->devq,
nchanger->num_devices) != CAM_REQ_CMP) {
printf("cdregister: camq_resize "
"failed, changer support may "
"be messed up\n");
}
STAILQ_INSERT_TAIL(&nchanger->chluns, softc,
changer_links);
}
}
cdregisterexit:
/* Lock this peripheral until we are setup */
/* Can't block */
cam_periph_lock(periph, PRIBIO);
if ((softc->flags & CD_FLAG_CHANGER) == 0)
xpt_schedule(periph, /*priority*/5);
else
cdschedule(periph, /*priority*/ 5);
return(CAM_REQ_CMP);
}
static int
cdopen(dev_t dev, int flags, int fmt, struct proc *p)
{
struct disklabel *label;
struct cam_periph *periph;
struct cd_softc *softc;
struct ccb_getdev cgd;
u_int32_t size;
int unit, error;
int s;
unit = dkunit(dev);
periph = cam_extend_get(cdperiphs, unit);
if (periph == NULL)
return (ENXIO);
softc = (struct cd_softc *)periph->softc;
/*
* Grab splsoftcam and hold it until we lock the peripheral.
*/
s = splsoftcam();
if (softc->flags & CD_FLAG_INVALID) {
splx(s);
return(ENXIO);
}
if ((error = cam_periph_lock(periph, PRIBIO | PCATCH)) != 0) {
splx(s);
return (error);
}
splx(s);
if (cam_periph_acquire(periph) != CAM_REQ_CMP)
return(ENXIO);
cdprevent(periph, PR_PREVENT);
/* find out the size */
if ((error = cdsize(dev, &size)) != 0) {
cdprevent(periph, PR_ALLOW);
cam_periph_unlock(periph);
cam_periph_release(periph);
return(error);
}
/*
* Build prototype label for whole disk.
* Should take information about different data tracks from the
* TOC and put it in the partition table.
*/
label = &softc->disk.d_label;
bzero(label, sizeof(*label));
label->d_type = DTYPE_SCSI;
/*
* Grab the inquiry data to get the vendor and product names.
* Put them in the typename and packname for the label.
*/
xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
cgd.ccb_h.func_code = XPT_GDEV_TYPE;
xpt_action((union ccb *)&cgd);
strncpy(label->d_typename, cgd.inq_data.vendor,
min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
strncpy(label->d_packname, cgd.inq_data.product,
min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
label->d_secsize = softc->params.blksize;
label->d_secperunit = softc->params.disksize;
label->d_flags = D_REMOVABLE;
/*
* Make partition 'a' cover the whole disk. This is a temporary
* compatibility hack. The 'a' partition should not exist, so
* the slice code won't create it. The slice code will make
* partition (RAW_PART + 'a') cover the whole disk and fill in
* some more defaults.
*/
label->d_partitions[0].p_size = label->d_secperunit;
label->d_partitions[0].p_fstype = FS_OTHER;
/*
* We unconditionally (re)set the blocksize each time the
* CD device is opened. This is because the CD can change,
* and therefore the blocksize might change.
* XXX problems here if some slice or partition is still
* open with the old size?
*/
if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0)
softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
softc->device_stats.block_size = softc->params.blksize;
cam_periph_unlock(periph);
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdopen\n"));
return (error);
}
static int
cdclose(dev_t dev, int flag, int fmt, struct proc *p)
{
struct cam_periph *periph;
struct cd_softc *softc;
int unit, error;
unit = dkunit(dev);
periph = cam_extend_get(cdperiphs, unit);
if (periph == NULL)
return (ENXIO);
softc = (struct cd_softc *)periph->softc;
if ((error = cam_periph_lock(periph, PRIBIO)) != 0)
return (error);
if ((softc->flags & CD_FLAG_DISC_REMOVABLE) != 0)
cdprevent(periph, PR_ALLOW);
/*
* Since we're closing this CD, mark the blocksize as unavailable.
* It will be marked as available whence the CD is opened again.
*/
softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
cam_periph_unlock(periph);
cam_periph_release(periph);
return (0);
}
static void
cdshorttimeout(void *arg)
{
struct cdchanger *changer;
int s;
s = splsoftcam();
changer = (struct cdchanger *)arg;
/* Always clear the short timeout flag, since that's what we're in */
changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
/*
* Check to see if there is any more pending or outstanding I/O for
* this device. If not, move it out of the active slot.
*/
if ((bioq_first(&changer->cur_device->bio_queue) == NULL)
&& (changer->cur_device->device_stats.busy_count == 0)) {
changer->flags |= CHANGER_MANUAL_CALL;
cdrunchangerqueue(changer);
}
splx(s);
}
/*
* This is a wrapper for xpt_schedule. It only applies to changers.
*/
static void
cdschedule(struct cam_periph *periph, int priority)
{
struct cd_softc *softc;
int s;
s = splsoftcam();
softc = (struct cd_softc *)periph->softc;
/*
* If this device isn't currently queued, and if it isn't
* the active device, then we queue this device and run the
* changer queue if there is no timeout scheduled to do it.
* If this device is the active device, just schedule it
* to run again. If this device is queued, there should be
* a timeout in place already that will make sure it runs.
*/
if ((softc->pinfo.index == CAM_UNQUEUED_INDEX)
&& ((softc->flags & CD_FLAG_ACTIVE) == 0)) {
/*
* We don't do anything with the priority here.
* This is strictly a fifo queue.
*/
softc->pinfo.priority = 1;
softc->pinfo.generation = ++softc->changer->devq.generation;
camq_insert(&softc->changer->devq, (cam_pinfo *)softc);
/*
* Since we just put a device in the changer queue,
* check and see if there is a timeout scheduled for
* this changer. If so, let the timeout handle
* switching this device into the active slot. If
* not, manually call the timeout routine to
* bootstrap things.
*/
if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
&& ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
&& ((softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED)==0)){
softc->changer->flags |= CHANGER_MANUAL_CALL;
cdrunchangerqueue(softc->changer);
}
} else if ((softc->flags & CD_FLAG_ACTIVE)
&& ((softc->flags & CD_FLAG_SCHED_ON_COMP) == 0))
xpt_schedule(periph, priority);
splx(s);
}
static void
cdrunchangerqueue(void *arg)
{
struct cd_softc *softc;
struct cdchanger *changer;
int called_from_timeout;
int s;
s = splsoftcam();
changer = (struct cdchanger *)arg;
/*
* If we have NOT been called from cdstrategy() or cddone(), and
* instead from a timeout routine, go ahead and clear the
* timeout flag.
*/
if ((changer->flags & CHANGER_MANUAL_CALL) == 0) {
changer->flags &= ~CHANGER_TIMEOUT_SCHED;
called_from_timeout = 1;
} else
called_from_timeout = 0;
/* Always clear the manual call flag */
changer->flags &= ~CHANGER_MANUAL_CALL;
/* nothing to do if the queue is empty */
if (changer->devq.entries <= 0) {
splx(s);
return;
}
/*
* If the changer queue is frozen, that means we have an active
* device.
*/
if (changer->devq.qfrozen_cnt > 0) {
if (changer->cur_device->device_stats.busy_count > 0) {
changer->cur_device->flags |= CD_FLAG_SCHED_ON_COMP;
changer->cur_device->bufs_left =
changer->cur_device->device_stats.busy_count;
if (called_from_timeout) {
changer->long_handle =
timeout(cdrunchangerqueue, changer,
changer_max_busy_seconds * hz);
changer->flags |= CHANGER_TIMEOUT_SCHED;
}
splx(s);
return;
}
/*
* We always need to reset the frozen count and clear the
* active flag.
*/
changer->devq.qfrozen_cnt--;
changer->cur_device->flags &= ~CD_FLAG_ACTIVE;
changer->cur_device->flags &= ~CD_FLAG_SCHED_ON_COMP;
/*
* Check to see whether the current device has any I/O left
* to do. If so, requeue it at the end of the queue. If
* not, there is no need to requeue it.
*/
if (bioq_first(&changer->cur_device->bio_queue) != NULL) {
changer->cur_device->pinfo.generation =
++changer->devq.generation;
camq_insert(&changer->devq,
(cam_pinfo *)changer->cur_device);
}
}
softc = (struct cd_softc *)camq_remove(&changer->devq, CAMQ_HEAD);
changer->cur_device = softc;
changer->devq.qfrozen_cnt++;
softc->flags |= CD_FLAG_ACTIVE;
/* Just in case this device is waiting */
wakeup(&softc->changer);
xpt_schedule(softc->periph, /*priority*/ 1);
/*
* Get rid of any pending timeouts, and set a flag to schedule new
* ones so this device gets its full time quantum.
*/
if (changer->flags & CHANGER_TIMEOUT_SCHED) {
untimeout(cdrunchangerqueue, changer, changer->long_handle);
changer->flags &= ~CHANGER_TIMEOUT_SCHED;
}
if (changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
untimeout(cdshorttimeout, changer, changer->short_handle);
changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
}
/*
* We need to schedule timeouts, but we only do this after the
* first transaction has completed. This eliminates the changer
* switch time.
*/
changer->flags |= CHANGER_NEED_TIMEOUT;
splx(s);
}
static void
cdchangerschedule(struct cd_softc *softc)
{
struct cdchanger *changer;
int s;
s = splsoftcam();
changer = softc->changer;
/*
* If this is a changer, and this is the current device,
* and this device has at least the minimum time quantum to
* run, see if we can switch it out.
*/
if ((softc->flags & CD_FLAG_ACTIVE)
&& ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0)
&& ((changer->flags & CHANGER_NEED_TIMEOUT) == 0)) {
/*
* We try three things here. The first is that we
* check to see whether the schedule on completion
* flag is set. If it is, we decrement the number
* of buffers left, and if it's zero, we reschedule.
* Next, we check to see whether the pending buffer
* queue is empty and whether there are no
* outstanding transactions. If so, we reschedule.
* Next, we see if the pending buffer queue is empty.
* If it is, we set the number of buffers left to
* the current active buffer count and set the
* schedule on complete flag.
*/
if (softc->flags & CD_FLAG_SCHED_ON_COMP) {
if (--softc->bufs_left == 0) {
softc->changer->flags |=
CHANGER_MANUAL_CALL;
softc->flags &= ~CD_FLAG_SCHED_ON_COMP;
cdrunchangerqueue(softc->changer);
}
} else if ((bioq_first(&softc->bio_queue) == NULL)
&& (softc->device_stats.busy_count == 0)) {
softc->changer->flags |= CHANGER_MANUAL_CALL;
cdrunchangerqueue(softc->changer);
}
} else if ((softc->changer->flags & CHANGER_NEED_TIMEOUT)
&& (softc->flags & CD_FLAG_ACTIVE)) {
/*
* Now that the first transaction to this
* particular device has completed, we can go ahead
* and schedule our timeouts.
*/
if ((changer->flags & CHANGER_TIMEOUT_SCHED) == 0) {
changer->long_handle =
timeout(cdrunchangerqueue, changer,
changer_max_busy_seconds * hz);
changer->flags |= CHANGER_TIMEOUT_SCHED;
} else
printf("cdchangerschedule: already have a long"
" timeout!\n");
if ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0) {
changer->short_handle =
timeout(cdshorttimeout, changer,
changer_min_busy_seconds * hz);
changer->flags |= CHANGER_SHORT_TMOUT_SCHED;
} else
printf("cdchangerschedule: already have a short "
"timeout!\n");
/*
* We just scheduled timeouts, no need to schedule
* more.
*/
changer->flags &= ~CHANGER_NEED_TIMEOUT;
}
splx(s);
}
static int
cdrunccb(union ccb *ccb, int (*error_routine)(union ccb *ccb,
u_int32_t cam_flags,
u_int32_t sense_flags),
u_int32_t cam_flags, u_int32_t sense_flags)
{
struct cd_softc *softc;
struct cam_periph *periph;
int error;
periph = xpt_path_periph(ccb->ccb_h.path);
softc = (struct cd_softc *)periph->softc;
error = cam_periph_runccb(ccb, error_routine, cam_flags, sense_flags,
&softc->device_stats);
if (softc->flags & CD_FLAG_CHANGER)
cdchangerschedule(softc);
return(error);
}
static union ccb *
cdgetccb(struct cam_periph *periph, u_int32_t priority)
{
struct cd_softc *softc;
int s;
softc = (struct cd_softc *)periph->softc;
if (softc->flags & CD_FLAG_CHANGER) {
s = splsoftcam();
/*
* This should work the first time this device is woken up,
* but just in case it doesn't, we use a while loop.
*/
while ((softc->flags & CD_FLAG_ACTIVE) == 0) {
/*
* If this changer isn't already queued, queue it up.
*/
if (softc->pinfo.index == CAM_UNQUEUED_INDEX) {
softc->pinfo.priority = 1;
softc->pinfo.generation =
++softc->changer->devq.generation;
camq_insert(&softc->changer->devq,
(cam_pinfo *)softc);
}
if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
&& ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
&& ((softc->changer->flags
& CHANGER_SHORT_TMOUT_SCHED)==0)) {
softc->changer->flags |= CHANGER_MANUAL_CALL;
cdrunchangerqueue(softc->changer);
} else
tsleep(&softc->changer, PRIBIO, "cgticb", 0);
}
splx(s);
}
return(cam_periph_getccb(periph, priority));
}
/*
* 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
cdstrategy(struct bio *bp)
{
struct cam_periph *periph;
struct cd_softc *softc;
u_int unit, part;
int s;
unit = dkunit(bp->bio_dev);
part = dkpart(bp->bio_dev);
periph = cam_extend_get(cdperiphs, unit);
if (periph == NULL) {
bp->bio_error = ENXIO;
goto bad;
}
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstrategy\n"));
softc = (struct cd_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 & CD_FLAG_INVALID)) {
splx(s);
bp->bio_error = ENXIO;
goto bad;
}
/*
* Place it in the queue of disk activities for this disk
*/
bioqdisksort(&softc->bio_queue, bp);
splx(s);
/*
* Schedule ourselves for performing the work. We do things
* differently for changers.
*/
if ((softc->flags & CD_FLAG_CHANGER) == 0)
xpt_schedule(periph, /* XXX priority */1);
else
cdschedule(periph, /* 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);
return;
}
static void
cdstart(struct cam_periph *periph, union ccb *start_ccb)
{
struct cd_softc *softc;
struct bio *bp;
struct ccb_scsiio *csio;
struct scsi_read_capacity_data *rcap;
int s;
softc = (struct cd_softc *)periph->softc;
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstart\n"));
switch (softc->state) {
case CD_STATE_NORMAL:
{
int oldspl;
s = splbio();
bp = bioq_first(&softc->bio_queue);
if (periph->immediate_priority <= periph->pinfo.priority) {
start_ccb->ccb_h.ccb_state = CD_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 {
bioq_remove(&softc->bio_queue, bp);
devstat_start_transaction(&softc->device_stats);
scsi_read_write(&start_ccb->csio,
/*retries*/4,
/* cbfcnp */ cddone,
(bp->bio_flags & BIO_ORDERED) != 0 ?
MSG_ORDERED_Q_TAG :
MSG_SIMPLE_Q_TAG,
/* read */bp->bio_cmd == BIO_READ,
/* byte2 */ 0,
/* minimum_cmd_size */ 10,
/* lba */ bp->bio_pblkno,
bp->bio_bcount / softc->params.blksize,
/* data_ptr */ bp->bio_data,
/* dxfer_len */ bp->bio_bcount,
/* sense_len */ SSD_FULL_SIZE,
/* timeout */ 30000);
start_ccb->ccb_h.ccb_state = CD_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);
/* We expect a unit attention from this device */
if ((softc->flags & CD_FLAG_RETRY_UA) != 0) {
start_ccb->ccb_h.ccb_state |= CD_CCB_RETRY_UA;
softc->flags &= ~CD_FLAG_RETRY_UA;
}
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);
}
break;
}
case CD_STATE_PROBE:
{
rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
M_TEMP,
M_NOWAIT);
if (rcap == NULL) {
xpt_print_path(periph->path);
printf("cdstart: Couldn't malloc read_capacity data\n");
/* cd_free_periph??? */
break;
}
csio = &start_ccb->csio;
scsi_read_capacity(csio,
/*retries*/1,
cddone,
MSG_SIMPLE_Q_TAG,
rcap,
SSD_FULL_SIZE,
/*timeout*/20000);
start_ccb->ccb_h.ccb_bp = NULL;
start_ccb->ccb_h.ccb_state = CD_CCB_PROBE;
xpt_action(start_ccb);
break;
}
}
}
static void
cddone(struct cam_periph *periph, union ccb *done_ccb)
{
struct cd_softc *softc;
struct ccb_scsiio *csio;
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cddone\n"));
softc = (struct cd_softc *)periph->softc;
csio = &done_ccb->csio;
switch (csio->ccb_h.ccb_state & CD_CCB_TYPE_MASK) {
case CD_CCB_BUFFER_IO:
{
struct bio *bp;
int error;
int oldspl;
bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
error = 0;
if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
int sf;
if ((done_ccb->ccb_h.ccb_state & CD_CCB_RETRY_UA) != 0)
sf = SF_RETRY_UA;
else
sf = 0;
/* Retry selection timeouts */
sf |= SF_RETRY_SELTO;
if ((error = cderror(done_ccb, 0, sf)) == ERESTART) {
/*
* A retry was scheuled, so
* just return.
*/
return;
}
}
if (error != 0) {
int s;
struct bio *q_bp;
xpt_print_path(periph->path);
printf("cddone: got error %#x back\n", error);
s = splbio();
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_resid = bp->bio_bcount;
bp->bio_error = error;
bp->bio_flags |= BIO_ERROR;
cam_release_devq(done_ccb->ccb_h.path,
/*relsim_flags*/0,
/*reduction*/0,
/*timeout*/0,
/*getcount_only*/0);
} else {
bp->bio_resid = csio->resid;
bp->bio_error = 0;
if (bp->bio_resid != 0) {
/* Short transfer ??? */
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);
if (softc->flags & CD_FLAG_CHANGER)
cdchangerschedule(softc);
devstat_end_transaction_bio(&softc->device_stats, bp);
biodone(bp);
break;
}
case CD_CCB_PROBE:
{
struct scsi_read_capacity_data *rdcap;
char announce_buf[120]; /*
* Currently (9/30/97) the
* longest possible announce
* buffer is 108 bytes, for the
* first error case below.
* That is 39 bytes for the
* basic string, 16 bytes for the
* biggest sense key (hardware
* error), 52 bytes for the
* text of the largest sense
* qualifier valid for a CDROM,
* (0x72, 0x03 or 0x04,
* 0x03), and one byte for the
* null terminating character.
* To allow for longer strings,
* the announce buffer is 120
* bytes.
*/
struct cd_params *cdp;
cdp = &softc->params;
rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
cdp->disksize = scsi_4btoul (rdcap->addr) + 1;
cdp->blksize = scsi_4btoul (rdcap->length);
if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
snprintf(announce_buf, sizeof(announce_buf),
"cd present [%lu x %lu byte records]",
cdp->disksize, (u_long)cdp->blksize);
} else {
int error;
/*
* Retry any UNIT ATTENTION type errors. They
* are expected at boot.
*/
error = cderror(done_ccb, 0, SF_RETRY_UA |
SF_NO_PRINT | SF_RETRY_SELTO);
if (error == ERESTART) {
/*
* A retry was scheuled, so
* just return.
*/
return;
} else if (error != 0) {
struct scsi_sense_data *sense;
int asc, ascq;
int sense_key, error_code;
int have_sense;
cam_status status;
struct ccb_getdev cgd;
/* Don't wedge this device's queue */
cam_release_devq(done_ccb->ccb_h.path,
/*relsim_flags*/0,
/*reduction*/0,
/*timeout*/0,
/*getcount_only*/0);
status = done_ccb->ccb_h.status;
xpt_setup_ccb(&cgd.ccb_h,
done_ccb->ccb_h.path,
/* priority */ 1);
cgd.ccb_h.func_code = XPT_GDEV_TYPE;
xpt_action((union ccb *)&cgd);
if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
|| ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
|| ((status & CAM_AUTOSNS_VALID) == 0))
have_sense = FALSE;
else
have_sense = TRUE;
if (have_sense) {
sense = &csio->sense_data;
scsi_extract_sense(sense, &error_code,
&sense_key,
&asc, &ascq);
}
/*
* Attach to anything that claims to be a
* CDROM or WORM device, as long as it
* doesn't return a "Logical unit not
* supported" (0x25) error.
*/
if ((have_sense) && (asc != 0x25)
&& (error_code == SSD_CURRENT_ERROR))
snprintf(announce_buf,
sizeof(announce_buf),
"Attempt to query device "
"size failed: %s, %s",
scsi_sense_key_text[sense_key],
scsi_sense_desc(asc,ascq,
&cgd.inq_data));
else if (SID_TYPE(&cgd.inq_data) == T_CDROM) {
/*
* We only print out an error for
* CDROM type devices. For WORM
* devices, we don't print out an
* error since a few WORM devices
* don't support CDROM commands.
* If we have sense information, go
* ahead and print it out.
* Otherwise, just say that we
* couldn't attach.
*/
/*
* Just print out the error, not
* the full probe message, when we
* don't attach.
*/
if (have_sense)
scsi_sense_print(
&done_ccb->csio);
else {
xpt_print_path(periph->path);
printf("got CAM status %#x\n",
done_ccb->ccb_h.status);
}
xpt_print_path(periph->path);
printf("fatal error, failed"
" to attach to device\n");
/*
* Invalidate this peripheral.
*/
cam_periph_invalidate(periph);
announce_buf[0] = '\0';
} else {
/*
* Invalidate this peripheral.
*/
cam_periph_invalidate(periph);
announce_buf[0] = '\0';
}
}
}
free(rdcap, M_TEMP);
if (announce_buf[0] != '\0') {
xpt_announce_periph(periph, announce_buf);
if (softc->flags & CD_FLAG_CHANGER)
cdchangerschedule(softc);
}
softc->state = CD_STATE_NORMAL;
/*
* Since our peripheral may be invalidated by an error
* above or an external event, we must release our CCB
* before releasing the probe lock on the peripheral.
* The peripheral will only go away once the last lock
* is removed, and we need it around for the CCB release
* operation.
*/
xpt_release_ccb(done_ccb);
cam_periph_unlock(periph);
return;
}
case CD_CCB_WAITING:
{
/* Caller will release the CCB */
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
("trying to wakeup ccbwait\n"));
wakeup(&done_ccb->ccb_h.cbfcnp);
return;
}
default:
break;
}
xpt_release_ccb(done_ccb);
}
static int
cdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
{
struct cam_periph *periph;
struct cd_softc *softc;
int error, unit;
unit = dkunit(dev);
periph = cam_extend_get(cdperiphs, unit);
if (periph == NULL)
return(ENXIO);
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdioctl\n"));
softc = (struct cd_softc *)periph->softc;
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
("trying to do ioctl %#lx\n", cmd));
error = cam_periph_lock(periph, PRIBIO | PCATCH);
if (error != 0)
return(error);
switch (cmd) {
case CDIOCPLAYTRACKS:
{
struct ioc_play_track *args
= (struct ioc_play_track *) addr;
struct cd_mode_data *data;
data = malloc(sizeof(struct cd_mode_data), M_TEMP,
M_WAITOK);
CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
("trying to do CDIOCPLAYTRACKS\n"));
error = cdgetmode(periph, data, AUDIO_PAGE);
if (error) {
free(data, M_TEMP);
break;
}
data->page.audio.flags &= ~CD_PA_SOTC;
data->page.audio.flags |= CD_PA_IMMED;
error = cdsetmode(periph, data);
free(data, M_TEMP);
if (error)
break;
if (softc->quirks & CD_Q_BCD_TRACKS) {
args->start_track = bin2bcd(args->start_track);
args->end_track = bin2bcd(args->end_track);
}
error = cdplaytracks(periph,
args->start_track,
args->start_index,
args->end_track,
args->end_index);
}
break;
case CDIOCPLAYMSF:
{
struct ioc_play_msf *args
= (struct ioc_play_msf *) addr;
struct cd_mode_data *data;
data = malloc(sizeof(struct cd_mode_data), M_TEMP,
M_WAITOK);
CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
("trying to do CDIOCPLAYMSF\n"));
error = cdgetmode(periph, data, AUDIO_PAGE);
if (error) {
free(data, M_TEMP);
break;
}
data->page.audio.flags &= ~CD_PA_SOTC;
data->page.audio.flags |= CD_PA_IMMED;
error = cdsetmode(periph, data);
free(data, M_TEMP);
if (error)
break;
error = cdplaymsf(periph,
args->start_m,
args->start_s,
args->start_f,
args->end_m,
args->end_s,
args->end_f);
}
break;
case CDIOCPLAYBLOCKS:
{
struct ioc_play_blocks *args
= (struct ioc_play_blocks *) addr;
struct cd_mode_data *data;
CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
("trying to do CDIOCPLAYBLOCKS\n"));
data = malloc(sizeof(struct cd_mode_data), M_TEMP,
M_WAITOK);
error = cdgetmode(periph, data, AUDIO_PAGE);
if (error) {
free(data, M_TEMP);
break;
}
data->page.audio.flags &= ~CD_PA_SOTC;
data->page.audio.flags |= CD_PA_IMMED;
error = cdsetmode(periph, data);
free(data, M_TEMP);
if (error)
break;
error = cdplay(periph, args->blk, args->len);
}
break;
case CDIOCREADSUBCHANNEL:
{
struct ioc_read_subchannel *args
= (struct ioc_read_subchannel *) addr;
struct cd_sub_channel_info *data;
u_int32_t len = args->data_len;
CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
("trying to do CDIOCREADSUBCHANNEL\n"));
data = malloc(sizeof(struct cd_sub_channel_info),
M_TEMP, M_WAITOK);
if ((len > sizeof(struct cd_sub_channel_info)) ||
(len < sizeof(struct cd_sub_channel_header))) {
printf(
"scsi_cd: cdioctl: "
"cdioreadsubchannel: error, len=%d\n",
len);
error = EINVAL;
free(data, M_TEMP);
break;
}
if (softc->quirks & CD_Q_BCD_TRACKS)
args->track = bin2bcd(args->track);
error = cdreadsubchannel(periph, args->address_format,
args->data_format, args->track, data, len);
if (error) {
free(data, M_TEMP);
break;
}
if (softc->quirks & CD_Q_BCD_TRACKS)
data->what.track_info.track_number =
bcd2bin(data->what.track_info.track_number);
len = min(len, ((data->header.data_len[0] << 8) +
data->header.data_len[1] +
sizeof(struct cd_sub_channel_header)));
if (copyout(data, args->data, len) != 0) {
error = EFAULT;
}
free(data, M_TEMP);
}
break;
case CDIOREADTOCHEADER:
{
struct ioc_toc_header *th;
CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
("trying to do CDIOREADTOCHEADER\n"));
th = malloc(sizeof(struct ioc_toc_header), M_TEMP,
M_WAITOK);
error = cdreadtoc(periph, 0, 0,
(struct cd_toc_entry *)th,
sizeof (*th));
if (error) {
free(th, M_TEMP);
break;
}
if (softc->quirks & CD_Q_BCD_TRACKS) {
/* we are going to have to convert the BCD
* encoding on the cd to what is expected
*/
th->starting_track =
bcd2bin(th->starting_track);
th->ending_track = bcd2bin(th->ending_track);
}
NTOHS(th->len);
bcopy(th, addr, sizeof(*th));
free(th, M_TEMP);
}
break;
case CDIOREADTOCENTRYS:
{
typedef struct {
struct ioc_toc_header header;
struct cd_toc_entry entries[100];
} data_t;
typedef struct {
struct ioc_toc_header header;
struct cd_toc_entry entry;
} lead_t;
data_t *data;
lead_t *lead;
struct ioc_read_toc_entry *te =
(struct ioc_read_toc_entry *) addr;
struct ioc_toc_header *th;
u_int32_t len, readlen, idx, num;
u_int32_t starting_track = te->starting_track;
CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
("trying to do CDIOREADTOCENTRYS\n"));
data = malloc(sizeof(data_t), M_TEMP, M_WAITOK);
lead = malloc(sizeof(lead_t), M_TEMP, M_WAITOK);
if (te->data_len < sizeof(struct cd_toc_entry)
|| (te->data_len % sizeof(struct cd_toc_entry)) != 0
|| (te->address_format != CD_MSF_FORMAT
&& te->address_format != CD_LBA_FORMAT)) {
error = EINVAL;
printf("scsi_cd: error in readtocentries, "
"returning EINVAL\n");
free(data, M_TEMP);
free(lead, M_TEMP);
break;
}
th = &data->header;
error = cdreadtoc(periph, 0, 0,
(struct cd_toc_entry *)th,
sizeof (*th));
if (error) {
free(data, M_TEMP);
free(lead, M_TEMP);
break;
}
if (softc->quirks & CD_Q_BCD_TRACKS) {
/* we are going to have to convert the BCD
* encoding on the cd to what is expected
*/
th->starting_track =
bcd2bin(th->starting_track);
th->ending_track = bcd2bin(th->ending_track);
}
if (starting_track == 0)
starting_track = th->starting_track;
else if (starting_track == LEADOUT)
starting_track = th->ending_track + 1;
else if (starting_track < th->starting_track ||
starting_track > th->ending_track + 1) {
printf("scsi_cd: error in readtocentries, "
"returning EINVAL\n");
free(data, M_TEMP);
free(lead, M_TEMP);
error = EINVAL;
break;
}
/* calculate reading length without leadout entry */
readlen = (th->ending_track - starting_track + 1) *
sizeof(struct cd_toc_entry);
/* and with leadout entry */
len = readlen + sizeof(struct cd_toc_entry);
if (te->data_len < len) {
len = te->data_len;
if (readlen > len)
readlen = len;
}
if (len > sizeof(data->entries)) {
printf("scsi_cd: error in readtocentries, "
"returning EINVAL\n");
error = EINVAL;
free(data, M_TEMP);
free(lead, M_TEMP);
break;
}
num = len / sizeof(struct cd_toc_entry);
if (readlen > 0) {
error = cdreadtoc(periph, te->address_format,
starting_track,
(struct cd_toc_entry *)data,
readlen + sizeof (*th));
if (error) {
free(data, M_TEMP);
free(lead, M_TEMP);
break;
}
}
/* make leadout entry if needed */
idx = starting_track + num - 1;
if (softc->quirks & CD_Q_BCD_TRACKS)
th->ending_track = bcd2bin(th->ending_track);
if (idx == th->ending_track + 1) {
error = cdreadtoc(periph, te->address_format,
LEADOUT,
(struct cd_toc_entry *)lead,
sizeof(*lead));
if (error) {
free(data, M_TEMP);
free(lead, M_TEMP);
break;
}
data->entries[idx - starting_track] =
lead->entry;
}
if (softc->quirks & CD_Q_BCD_TRACKS) {
for (idx = 0; idx < num - 1; idx++) {
data->entries[idx].track =
bcd2bin(data->entries[idx].track);
}
}
error = copyout(data->entries, te->data, len);
free(data, M_TEMP);
free(lead, M_TEMP);
}
break;
case CDIOREADTOCENTRY:
{
/* yeah yeah, this is ugly */
typedef struct {
struct ioc_toc_header header;
struct cd_toc_entry entry;
} data_t;
data_t *data;
struct ioc_read_toc_single_entry *te =
(struct ioc_read_toc_single_entry *) addr;
struct ioc_toc_header *th;
u_int32_t track;
CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
("trying to do CDIOREADTOCENTRY\n"));
data = malloc(sizeof(data_t), M_TEMP, M_WAITOK);
if (te->address_format != CD_MSF_FORMAT
&& te->address_format != CD_LBA_FORMAT) {
printf("error in readtocentry, "
" returning EINVAL\n");
free(data, M_TEMP);
error = EINVAL;
break;
}
th = &data->header;
error = cdreadtoc(periph, 0, 0,
(struct cd_toc_entry *)th,
sizeof (*th));
if (error) {
free(data, M_TEMP);
break;
}
if (softc->quirks & CD_Q_BCD_TRACKS) {
/* we are going to have to convert the BCD
* encoding on the cd to what is expected
*/
th->starting_track =
bcd2bin(th->starting_track);
th->ending_track = bcd2bin(th->ending_track);
}
track = te->track;
if (track == 0)
track = th->starting_track;
else if (track == LEADOUT)
/* OK */;
else if (track < th->starting_track ||
track > th->ending_track + 1) {
printf("error in readtocentry, "
" returning EINVAL\n");
free(data, M_TEMP);
error = EINVAL;
break;
}
error = cdreadtoc(periph, te->address_format, track,
(struct cd_toc_entry *)data,
sizeof(data_t));
if (error) {
free(data, M_TEMP);
break;
}
if (softc->quirks & CD_Q_BCD_TRACKS)
data->entry.track = bcd2bin(data->entry.track);
bcopy(&data->entry, &te->entry,
sizeof(struct cd_toc_entry));
free(data, M_TEMP);
}
break;
case CDIOCSETPATCH:
{
struct ioc_patch *arg = (struct ioc_patch *) addr;
struct cd_mode_data *data;
CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
("trying to do CDIOCSETPATCH\n"));
data = malloc(sizeof(struct cd_mode_data), M_TEMP,
M_WAITOK);
error = cdgetmode(periph, data, AUDIO_PAGE);
if (error) {
free(data, M_TEMP);
break;
}
data->page.audio.port[LEFT_PORT].channels =
arg->patch[0];
data->page.audio.port[RIGHT_PORT].channels =
arg->patch[1];
data->page.audio.port[2].channels = arg->patch[2];
data->page.audio.port[3].channels = arg->patch[3];
error = cdsetmode(periph, data);
free(data, M_TEMP);
}
break;
case CDIOCGETVOL:
{
struct ioc_vol *arg = (struct ioc_vol *) addr;
struct cd_mode_data *data;
CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
("trying to do CDIOCGETVOL\n"));
data = malloc(sizeof(struct cd_mode_data), M_TEMP,
M_WAITOK);
error = cdgetmode(periph, data, AUDIO_PAGE);
if (error) {
free(data, M_TEMP);
break;
}
arg->vol[LEFT_PORT] =
data->page.audio.port[LEFT_PORT].volume;
arg->vol[RIGHT_PORT] =
data->page.audio.port[RIGHT_PORT].volume;
arg->vol[2] = data->page.audio.port[2].volume;
arg->vol[3] = data->page.audio.port[3].volume;
free(data, M_TEMP);
}
break;
case CDIOCSETVOL:
{
struct ioc_vol *arg = (struct ioc_vol *) addr;
struct cd_mode_data *data;
CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
("trying to do CDIOCSETVOL\n"));
data = malloc(sizeof(struct cd_mode_data), M_TEMP,
M_WAITOK);
error = cdgetmode(periph, data, AUDIO_PAGE);
if (error) {
free(data, M_TEMP);
break;
}
data->page.audio.port[LEFT_PORT].channels = CHANNEL_0;
data->page.audio.port[LEFT_PORT].volume =
arg->vol[LEFT_PORT];
data->page.audio.port[RIGHT_PORT].channels = CHANNEL_1;
data->page.audio.port[RIGHT_PORT].volume =
arg->vol[RIGHT_PORT];
data->page.audio.port[2].volume = arg->vol[2];
data->page.audio.port[3].volume = arg->vol[3];
error = cdsetmode(periph, data);
free(data, M_TEMP);
}
break;
case CDIOCSETMONO:
{
struct cd_mode_data *data;
CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
("trying to do CDIOCSETMONO\n"));
data = malloc(sizeof(struct cd_mode_data),
M_TEMP, M_WAITOK);
error = cdgetmode(periph, data, AUDIO_PAGE);
if (error) {
free(data, M_TEMP);
break;
}
data->page.audio.port[LEFT_PORT].channels =
LEFT_CHANNEL | RIGHT_CHANNEL;
data->page.audio.port[RIGHT_PORT].channels =
LEFT_CHANNEL | RIGHT_CHANNEL;
data->page.audio.port[2].channels = 0;
data->page.audio.port[3].channels = 0;
error = cdsetmode(periph, data);
free(data, M_TEMP);
}
break;
case CDIOCSETSTEREO:
{
struct cd_mode_data *data;
CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
("trying to do CDIOCSETSTEREO\n"));
data = malloc(sizeof(struct cd_mode_data), M_TEMP,
M_WAITOK);
error = cdgetmode(periph, data, AUDIO_PAGE);
if (error) {
free(data, M_TEMP);
break;
}
data->page.audio.port[LEFT_PORT].channels =
LEFT_CHANNEL;
data->page.audio.port[RIGHT_PORT].channels =
RIGHT_CHANNEL;
data->page.audio.port[2].channels = 0;
data->page.audio.port[3].channels = 0;
error = cdsetmode(periph, data);
free(data, M_TEMP);
}
break;
case CDIOCSETMUTE:
{
struct cd_mode_data *data;
CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
("trying to do CDIOCSETMUTE\n"));
data = malloc(sizeof(struct cd_mode_data), M_TEMP,
M_WAITOK);
error = cdgetmode(periph, data, AUDIO_PAGE);
if (error) {
free(data, M_TEMP);
break;
}
data->page.audio.port[LEFT_PORT].channels = 0;
data->page.audio.port[RIGHT_PORT].channels = 0;
data->page.audio.port[2].channels = 0;
data->page.audio.port[3].channels = 0;
error = cdsetmode(periph, data);
free(data, M_TEMP);
}
break;
case CDIOCSETLEFT:
{
struct cd_mode_data *data;
CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
("trying to do CDIOCSETLEFT\n"));
data = malloc(sizeof(struct cd_mode_data), M_TEMP,
M_WAITOK);
error = cdgetmode(periph, data, AUDIO_PAGE);
if (error) {
free(data, M_TEMP);
break;
}
data->page.audio.port[LEFT_PORT].channels =
LEFT_CHANNEL;
data->page.audio.port[RIGHT_PORT].channels =
LEFT_CHANNEL;
data->page.audio.port[2].channels = 0;
data->page.audio.port[3].channels = 0;
error = cdsetmode(periph, data);
free(data, M_TEMP);
}
break;
case CDIOCSETRIGHT:
{
struct cd_mode_data *data;
CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
("trying to do CDIOCSETRIGHT\n"));
data = malloc(sizeof(struct cd_mode_data), M_TEMP,
M_WAITOK);
error = cdgetmode(periph, data, AUDIO_PAGE);
if (error) {
free(data, M_TEMP);
break;
}
data->page.audio.port[LEFT_PORT].channels =
RIGHT_CHANNEL;
data->page.audio.port[RIGHT_PORT].channels =
RIGHT_CHANNEL;
data->page.audio.port[2].channels = 0;
data->page.audio.port[3].channels = 0;
error = cdsetmode(periph, data);
free(data, M_TEMP);
}
break;
case CDIOCRESUME:
error = cdpause(periph, 1);
break;
case CDIOCPAUSE:
error = cdpause(periph, 0);
break;
case CDIOCSTART:
error = cdstartunit(periph);
break;
case CDIOCSTOP:
error = cdstopunit(periph, 0);
break;
case CDIOCEJECT:
error = cdstopunit(periph, 1);
break;
case CDIOCALLOW:
cdprevent(periph, PR_ALLOW);
break;
case CDIOCPREVENT:
cdprevent(periph, PR_PREVENT);
break;
case CDIOCSETDEBUG:
/* sc_link->flags |= (SDEV_DB1 | SDEV_DB2); */
error = ENOTTY;
break;
case CDIOCCLRDEBUG:
/* sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2); */
error = ENOTTY;
break;
case CDIOCRESET:
/* return (cd_reset(periph)); */
error = ENOTTY;
break;
default:
error = cam_periph_ioctl(periph, cmd, addr, cderror);
break;
}
cam_periph_unlock(periph);
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdioctl\n"));
return (error);
}
static void
cdprevent(struct cam_periph *periph, int action)
{
union ccb *ccb;
struct cd_softc *softc;
int error;
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdprevent\n"));
softc = (struct cd_softc *)periph->softc;
if (((action == PR_ALLOW)
&& (softc->flags & CD_FLAG_DISC_LOCKED) == 0)
|| ((action == PR_PREVENT)
&& (softc->flags & CD_FLAG_DISC_LOCKED) != 0)) {
return;
}
ccb = cdgetccb(periph, /* priority */ 1);
scsi_prevent(&ccb->csio,
/*retries*/ 1,
cddone,
MSG_SIMPLE_Q_TAG,
action,
SSD_FULL_SIZE,
/* timeout */60000);
error = cdrunccb(ccb, cderror, /*cam_flags*/0,
/*sense_flags*/SF_RETRY_UA|SF_NO_PRINT|SF_RETRY_SELTO);
xpt_release_ccb(ccb);
if (error == 0) {
if (action == PR_ALLOW)
softc->flags &= ~CD_FLAG_DISC_LOCKED;
else
softc->flags |= CD_FLAG_DISC_LOCKED;
}
}
static int
cdsize(dev_t dev, u_int32_t *size)
{
struct cam_periph *periph;
struct cd_softc *softc;
union ccb *ccb;
struct scsi_read_capacity_data *rcap_buf;
int error;
periph = cam_extend_get(cdperiphs, dkunit(dev));
if (periph == NULL)
return (ENXIO);
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdsize\n"));
softc = (struct cd_softc *)periph->softc;
ccb = cdgetccb(periph, /* priority */ 1);
rcap_buf = malloc(sizeof(struct scsi_read_capacity_data),
M_TEMP, M_WAITOK);
scsi_read_capacity(&ccb->csio,
/*retries*/ 1,
cddone,
MSG_SIMPLE_Q_TAG,
rcap_buf,
SSD_FULL_SIZE,
/* timeout */20000);
error = cdrunccb(ccb, cderror, /*cam_flags*/0,
/*sense_flags*/SF_RETRY_UA|SF_NO_PRINT|SF_RETRY_SELTO);
xpt_release_ccb(ccb);
softc->params.disksize = scsi_4btoul(rcap_buf->addr) + 1;
softc->params.blksize = scsi_4btoul(rcap_buf->length);
free(rcap_buf, M_TEMP);
*size = softc->params.disksize;
return (error);
}
static int
cderror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
{
struct cd_softc *softc;
struct cam_periph *periph;
periph = xpt_path_periph(ccb->ccb_h.path);
softc = (struct cd_softc *)periph->softc;
/*
* XXX
* Until we have a better way of doing pack validation,
* don't treat UAs as errors.
*/
sense_flags |= SF_RETRY_UA;
return (cam_periph_error(ccb, cam_flags, sense_flags,
&softc->saved_ccb));
}
/*
* Read table of contents
*/
static int
cdreadtoc(struct cam_periph *periph, u_int32_t mode, u_int32_t start,
struct cd_toc_entry *data, u_int32_t len)
{
struct scsi_read_toc *scsi_cmd;
u_int32_t ntoc;
struct ccb_scsiio *csio;
union ccb *ccb;
int error;
ntoc = len;
error = 0;
ccb = cdgetccb(periph, /* priority */ 1);
csio = &ccb->csio;
cam_fill_csio(csio,
/* retries */ 1,
/* cbfcnp */ cddone,
/* flags */ CAM_DIR_IN,
/* tag_action */ MSG_SIMPLE_Q_TAG,
/* data_ptr */ (u_int8_t *)data,
/* dxfer_len */ len,
/* sense_len */ SSD_FULL_SIZE,
sizeof(struct scsi_read_toc),
/* timeout */ 50000);
scsi_cmd = (struct scsi_read_toc *)&csio->cdb_io.cdb_bytes;
bzero (scsi_cmd, sizeof(*scsi_cmd));
if (mode == CD_MSF_FORMAT)
scsi_cmd->byte2 |= CD_MSF;
scsi_cmd->from_track = start;
/* scsi_ulto2b(ntoc, (u_int8_t *)scsi_cmd->data_len); */
scsi_cmd->data_len[0] = (ntoc) >> 8;
scsi_cmd->data_len[1] = (ntoc) & 0xff;
scsi_cmd->op_code = READ_TOC;
error = cdrunccb(ccb, cderror, /*cam_flags*/0,
/*sense_flags*/SF_RETRY_UA|SF_RETRY_SELTO);
xpt_release_ccb(ccb);
return(error);
}
static int
cdreadsubchannel(struct cam_periph *periph, u_int32_t mode,
u_int32_t format, int track,
struct cd_sub_channel_info *data, u_int32_t len)
{
struct scsi_read_subchannel *scsi_cmd;
struct ccb_scsiio *csio;
union ccb *ccb;
int error;
error = 0;
ccb = cdgetccb(periph, /* priority */ 1);
csio = &ccb->csio;
cam_fill_csio(csio,
/* retries */ 1,
/* cbfcnp */ cddone,
/* flags */ CAM_DIR_IN,
/* tag_action */ MSG_SIMPLE_Q_TAG,
/* data_ptr */ (u_int8_t *)data,
/* dxfer_len */ len,
/* sense_len */ SSD_FULL_SIZE,
sizeof(struct scsi_read_subchannel),
/* timeout */ 50000);
scsi_cmd = (struct scsi_read_subchannel *)&csio->cdb_io.cdb_bytes;
bzero (scsi_cmd, sizeof(*scsi_cmd));
scsi_cmd->op_code = READ_SUBCHANNEL;
if (mode == CD_MSF_FORMAT)
scsi_cmd->byte1 |= CD_MSF;
scsi_cmd->byte2 = SRS_SUBQ;
scsi_cmd->subchan_format = format;
scsi_cmd->track = track;
scsi_ulto2b(len, (u_int8_t *)scsi_cmd->data_len);
scsi_cmd->control = 0;
error = cdrunccb(ccb, cderror, /*cam_flags*/0,
/*sense_flags*/SF_RETRY_UA|SF_RETRY_SELTO);
xpt_release_ccb(ccb);
return(error);
}
static int
cdgetmode(struct cam_periph *periph, struct cd_mode_data *data, u_int32_t page)
{
struct scsi_mode_sense_6 *scsi_cmd;
struct ccb_scsiio *csio;
union ccb *ccb;
int error;
ccb = cdgetccb(periph, /* priority */ 1);
csio = &ccb->csio;
bzero(data, sizeof(*data));
cam_fill_csio(csio,
/* retries */ 1,
/* cbfcnp */ cddone,
/* flags */ CAM_DIR_IN,
/* tag_action */ MSG_SIMPLE_Q_TAG,
/* data_ptr */ (u_int8_t *)data,
/* dxfer_len */ sizeof(*data),
/* sense_len */ SSD_FULL_SIZE,
sizeof(struct scsi_mode_sense_6),
/* timeout */ 50000);
scsi_cmd = (struct scsi_mode_sense_6 *)&csio->cdb_io.cdb_bytes;
bzero (scsi_cmd, sizeof(*scsi_cmd));
scsi_cmd->page = page;
scsi_cmd->length = sizeof(*data) & 0xff;
scsi_cmd->opcode = MODE_SENSE;
error = cdrunccb(ccb, cderror, /*cam_flags*/0,
/*sense_flags*/SF_RETRY_UA|SF_RETRY_SELTO);
xpt_release_ccb(ccb);
return(error);
}
static int
cdsetmode(struct cam_periph *periph, struct cd_mode_data *data)
{
struct scsi_mode_select_6 *scsi_cmd;
struct ccb_scsiio *csio;
union ccb *ccb;
int error;
ccb = cdgetccb(periph, /* priority */ 1);
csio = &ccb->csio;
error = 0;
cam_fill_csio(csio,
/* retries */ 1,
/* cbfcnp */ cddone,
/* flags */ CAM_DIR_OUT,
/* tag_action */ MSG_SIMPLE_Q_TAG,
/* data_ptr */ (u_int8_t *)data,
/* dxfer_len */ sizeof(*data),
/* sense_len */ SSD_FULL_SIZE,
sizeof(struct scsi_mode_select_6),
/* timeout */ 50000);
scsi_cmd = (struct scsi_mode_select_6 *)&csio->cdb_io.cdb_bytes;
bzero(scsi_cmd, sizeof(*scsi_cmd));
scsi_cmd->opcode = MODE_SELECT;
scsi_cmd->byte2 |= SMS_PF;
scsi_cmd->length = sizeof(*data) & 0xff;
data->header.data_length = 0;
/*
* SONY drives do not allow a mode select with a medium_type
* value that has just been returned by a mode sense; use a
* medium_type of 0 (Default) instead.
*/
data->header.medium_type = 0;
error = cdrunccb(ccb, cderror, /*cam_flags*/0,
/*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
xpt_release_ccb(ccb);
return(error);
}
static int
cdplay(struct cam_periph *periph, u_int32_t blk, u_int32_t len)
{
struct ccb_scsiio *csio;
union ccb *ccb;
int error;
u_int8_t cdb_len;
error = 0;
ccb = cdgetccb(periph, /* priority */ 1);
csio = &ccb->csio;
/*
* Use the smallest possible command to perform the operation.
*/
if ((len & 0xffff0000) == 0) {
/*
* We can fit in a 10 byte cdb.
*/
struct scsi_play_10 *scsi_cmd;
scsi_cmd = (struct scsi_play_10 *)&csio->cdb_io.cdb_bytes;
bzero (scsi_cmd, sizeof(*scsi_cmd));
scsi_cmd->op_code = PLAY_10;
scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
scsi_ulto2b(len, (u_int8_t *)scsi_cmd->xfer_len);
cdb_len = sizeof(*scsi_cmd);
} else {
struct scsi_play_12 *scsi_cmd;
scsi_cmd = (struct scsi_play_12 *)&csio->cdb_io.cdb_bytes;
bzero (scsi_cmd, sizeof(*scsi_cmd));
scsi_cmd->op_code = PLAY_12;
scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
scsi_ulto4b(len, (u_int8_t *)scsi_cmd->xfer_len);
cdb_len = sizeof(*scsi_cmd);
}
cam_fill_csio(csio,
/*retries*/2,
cddone,
/*flags*/CAM_DIR_NONE,
MSG_SIMPLE_Q_TAG,
/*dataptr*/NULL,
/*datalen*/0,
/*sense_len*/SSD_FULL_SIZE,
cdb_len,
/*timeout*/50 * 1000);
error = cdrunccb(ccb, cderror, /*cam_flags*/0,
/*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
xpt_release_ccb(ccb);
return(error);
}
static int
cdplaymsf(struct cam_periph *periph, u_int32_t startm, u_int32_t starts,
u_int32_t startf, u_int32_t endm, u_int32_t ends, u_int32_t endf)
{
struct scsi_play_msf *scsi_cmd;
struct ccb_scsiio *csio;
union ccb *ccb;
int error;
error = 0;
ccb = cdgetccb(periph, /* priority */ 1);
csio = &ccb->csio;
cam_fill_csio(csio,
/* retries */ 1,
/* cbfcnp */ cddone,
/* flags */ CAM_DIR_NONE,
/* tag_action */ MSG_SIMPLE_Q_TAG,
/* data_ptr */ NULL,
/* dxfer_len */ 0,
/* sense_len */ SSD_FULL_SIZE,
sizeof(struct scsi_play_msf),
/* timeout */ 50000);
scsi_cmd = (struct scsi_play_msf *)&csio->cdb_io.cdb_bytes;
bzero (scsi_cmd, sizeof(*scsi_cmd));
scsi_cmd->op_code = PLAY_MSF;
scsi_cmd->start_m = startm;
scsi_cmd->start_s = starts;
scsi_cmd->start_f = startf;
scsi_cmd->end_m = endm;
scsi_cmd->end_s = ends;
scsi_cmd->end_f = endf;
error = cdrunccb(ccb, cderror, /*cam_flags*/0,
/*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
xpt_release_ccb(ccb);
return(error);
}
static int
cdplaytracks(struct cam_periph *periph, u_int32_t strack, u_int32_t sindex,
u_int32_t etrack, u_int32_t eindex)
{
struct scsi_play_track *scsi_cmd;
struct ccb_scsiio *csio;
union ccb *ccb;
int error;
error = 0;
ccb = cdgetccb(periph, /* priority */ 1);
csio = &ccb->csio;
cam_fill_csio(csio,
/* retries */ 1,
/* cbfcnp */ cddone,
/* flags */ CAM_DIR_NONE,
/* tag_action */ MSG_SIMPLE_Q_TAG,
/* data_ptr */ NULL,
/* dxfer_len */ 0,
/* sense_len */ SSD_FULL_SIZE,
sizeof(struct scsi_play_track),
/* timeout */ 50000);
scsi_cmd = (struct scsi_play_track *)&csio->cdb_io.cdb_bytes;
bzero (scsi_cmd, sizeof(*scsi_cmd));
scsi_cmd->op_code = PLAY_TRACK;
scsi_cmd->start_track = strack;
scsi_cmd->start_index = sindex;
scsi_cmd->end_track = etrack;
scsi_cmd->end_index = eindex;
error = cdrunccb(ccb, cderror, /*cam_flags*/0,
/*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
xpt_release_ccb(ccb);
return(error);
}
static int
cdpause(struct cam_periph *periph, u_int32_t go)
{
struct scsi_pause *scsi_cmd;
struct ccb_scsiio *csio;
union ccb *ccb;
int error;
error = 0;
ccb = cdgetccb(periph, /* priority */ 1);
csio = &ccb->csio;
cam_fill_csio(csio,
/* retries */ 1,
/* cbfcnp */ cddone,
/* flags */ CAM_DIR_NONE,
/* tag_action */ MSG_SIMPLE_Q_TAG,
/* data_ptr */ NULL,
/* dxfer_len */ 0,
/* sense_len */ SSD_FULL_SIZE,
sizeof(struct scsi_pause),
/* timeout */ 50000);
scsi_cmd = (struct scsi_pause *)&csio->cdb_io.cdb_bytes;
bzero (scsi_cmd, sizeof(*scsi_cmd));
scsi_cmd->op_code = PAUSE;
scsi_cmd->resume = go;
error = cdrunccb(ccb, cderror, /*cam_flags*/0,
/*sense_flags*/SF_RETRY_UA |SF_RETRY_SELTO);
xpt_release_ccb(ccb);
return(error);
}
static int
cdstartunit(struct cam_periph *periph)
{
union ccb *ccb;
int error;
error = 0;
ccb = cdgetccb(periph, /* priority */ 1);
scsi_start_stop(&ccb->csio,
/* retries */ 1,
/* cbfcnp */ cddone,
/* tag_action */ MSG_SIMPLE_Q_TAG,
/* start */ TRUE,
/* load_eject */ TRUE,
/* immediate */ FALSE,
/* sense_len */ SSD_FULL_SIZE,
/* timeout */ 50000);
error = cdrunccb(ccb, cderror, /*cam_flags*/0,
/*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
xpt_release_ccb(ccb);
return(error);
}
static int
cdstopunit(struct cam_periph *periph, u_int32_t eject)
{
union ccb *ccb;
int error;
error = 0;
ccb = cdgetccb(periph, /* priority */ 1);
scsi_start_stop(&ccb->csio,
/* retries */ 1,
/* cbfcnp */ cddone,
/* tag_action */ MSG_SIMPLE_Q_TAG,
/* start */ FALSE,
/* load_eject */ eject,
/* immediate */ FALSE,
/* sense_len */ SSD_FULL_SIZE,
/* timeout */ 50000);
error = cdrunccb(ccb, cderror, /*cam_flags*/0,
/*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
xpt_release_ccb(ccb);
return(error);
}
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