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scsi_cd: make the media check asynchronous

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This makes the media check process asynchronous, so we no longer block
in cdstrategy() to check for media.

PR:		219857
Obtained from:	ken
MFC after:	3 weeks
This commit is contained in:
avg 2019-08-29 07:51:11 +00:00
parent 54ba4b35c0
commit 01f4cc17c5
2 changed files with 554 additions and 43 deletions
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585
sys/cam/scsi/scsi_cd.c
View File

@ -114,13 +114,21 @@ typedef enum {
CD_FLAG_RETRY_UA = 0x0200,
CD_FLAG_VALID_MEDIA = 0x0400,
CD_FLAG_VALID_TOC = 0x0800,
CD_FLAG_SCTX_INIT = 0x1000
CD_FLAG_SCTX_INIT = 0x1000,
CD_FLAG_MEDIA_WAIT = 0x2000,
CD_FLAG_MEDIA_SCAN_ACT = 0x4000
} cd_flags;
typedef enum {
CD_CCB_PROBE = 0x01,
CD_CCB_BUFFER_IO = 0x02,
CD_CCB_TUR = 0x04,
CD_CCB_TUR = 0x03,
CD_CCB_MEDIA_PREVENT = 0x04,
CD_CCB_MEDIA_ALLOW = 0x05,
CD_CCB_MEDIA_SIZE = 0x06,
CD_CCB_MEDIA_TOC_HDR = 0x07,
CD_CCB_MEDIA_TOC_FULL = 0x08,
CD_CCB_MEDIA_TOC_LEAD = 0x09,
CD_CCB_TYPE_MASK = 0x0F,
CD_CCB_RETRY_UA = 0x10
} cd_ccb_state;
@ -140,7 +148,13 @@ struct cd_toc_single {
typedef enum {
CD_STATE_PROBE,
CD_STATE_NORMAL
CD_STATE_NORMAL,
CD_STATE_MEDIA_PREVENT,
CD_STATE_MEDIA_ALLOW,
CD_STATE_MEDIA_SIZE,
CD_STATE_MEDIA_TOC_HDR,
CD_STATE_MEDIA_TOC_FULL,
CD_STATE_MEDIA_TOC_LEAD
} cd_state;
struct cd_softc {
@ -161,6 +175,8 @@ struct cd_softc {
struct sysctl_oid *sysctl_tree;
STAILQ_HEAD(, cd_mode_params) mode_queue;
struct cd_tocdata toc;
int toc_read_len;
struct cd_toc_single leadout;
struct disk *disk;
struct callout mediapoll_c;
@ -246,7 +262,8 @@ static void cddone(struct cam_periph *periph,
static union cd_pages *cdgetpage(struct cd_mode_params *mode_params);
static int cdgetpagesize(int page_num);
static void cdprevent(struct cam_periph *periph, int action);
static int cdcheckmedia(struct cam_periph *periph);
static void cdmediaprobedone(struct cam_periph *periph);
static int cdcheckmedia(struct cam_periph *periph, int do_wait);
static int cdsize(struct cam_periph *periph, u_int32_t *size);
static int cd6byteworkaround(union ccb *ccb);
static int cderror(union ccb *ccb, u_int32_t cam_flags,
@ -755,7 +772,7 @@ cdopen(struct disk *dp)
* if we don't have media, but then we don't allow anything but the
* CDIOCEJECT/CDIOCCLOSE ioctls if there is no media.
*/
cdcheckmedia(periph);
cdcheckmedia(periph, /*do_wait*/ 1);
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdopen\n"));
cam_periph_unhold(periph);
@ -851,27 +868,19 @@ cdstrategy(struct bio *bp)
return;
}
/*
* If we don't have valid media, look for it before trying to
* schedule the I/O.
*/
if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0) {
int error;
error = cdcheckmedia(periph);
if (error != 0) {
cam_periph_unlock(periph);
biofinish(bp, NULL, error);
return;
}
}
/*
* Place it in the queue of disk activities for this disk
*/
bioq_disksort(&softc->bio_queue, bp);
xpt_schedule(periph, CAM_PRIORITY_NORMAL);
/*
* If we don't know that we have valid media, schedule the media
* check first. The I/O will get executed after the media check.
*/
if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
cdcheckmedia(periph, /*do_wait*/ 0);
else
xpt_schedule(periph, CAM_PRIORITY_NORMAL);
cam_periph_unlock(periph);
return;
@ -883,7 +892,6 @@ 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;
softc = (struct cd_softc *)periph->softc;
@ -964,16 +972,40 @@ cdstart(struct cam_periph *periph, union ccb *start_ccb)
break;
}
case CD_STATE_PROBE:
case CD_STATE_MEDIA_SIZE:
{
struct scsi_read_capacity_data *rcap;
rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
M_SCSICD, M_NOWAIT | M_ZERO);
if (rcap == NULL) {
xpt_print(periph->path,
"cdstart: Couldn't malloc read_capacity data\n");
/* cd_free_periph??? */
"%s: Couldn't malloc read_capacity data\n",
__func__);
xpt_release_ccb(start_ccb);
/*
* We can't probe because we can't allocate memory,
* so invalidate the peripheral. The system probably
* has larger problems at this stage. If we've
* already probed (and are re-probing capacity), we
* don't need to invalidate.
*
* XXX KDM need to reset probe state and kick out
* pending I/O.
*/
if (softc->state == CD_STATE_PROBE)
cam_periph_invalidate(periph);
break;
}
/*
* Set the default capacity and sector size to something that
* GEOM can handle. This will get reset when a read capacity
* completes successfully.
*/
softc->disk->d_sectorsize = 2048;
softc->disk->d_mediasize = 0;
csio = &start_ccb->csio;
scsi_read_capacity(csio,
/*retries*/ cd_retry_count,
@ -983,7 +1015,108 @@ cdstart(struct cam_periph *periph, union ccb *start_ccb)
SSD_FULL_SIZE,
/*timeout*/20000);
start_ccb->ccb_h.ccb_bp = NULL;
start_ccb->ccb_h.ccb_state = CD_CCB_PROBE;
if (softc->state == CD_STATE_PROBE)
start_ccb->ccb_h.ccb_state = CD_CCB_PROBE;
else
start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_SIZE;
xpt_action(start_ccb);
break;
}
case CD_STATE_MEDIA_ALLOW:
case CD_STATE_MEDIA_PREVENT:
{
/*
* If the CD is already locked, we don't need to do this.
* Move on to the capacity check.
*/
if ((softc->flags & CD_FLAG_DISC_LOCKED) != 0) {
softc->state = CD_STATE_MEDIA_SIZE;
xpt_release_ccb(start_ccb);
xpt_schedule(periph, CAM_PRIORITY_NORMAL);
break;
}
scsi_prevent(&start_ccb->csio,
/*retries*/ cd_retry_count,
/*cbfcnp*/ cddone,
/*tag_action*/ MSG_SIMPLE_Q_TAG,
/*action*/ (softc->state == CD_STATE_MEDIA_ALLOW) ?
PR_ALLOW : PR_PREVENT,
/*sense_len*/ SSD_FULL_SIZE,
/*timeout*/ 60000);
start_ccb->ccb_h.ccb_bp = NULL;
if (softc->state == CD_STATE_MEDIA_ALLOW)
start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_ALLOW;
else
start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_PREVENT;
xpt_action(start_ccb);
break;
}
case CD_STATE_MEDIA_TOC_HDR: {
struct ioc_toc_header *toch;
bzero(&softc->toc, sizeof(softc->toc));
toch = &softc->toc.header;
scsi_read_toc(&start_ccb->csio,
/*retries*/ cd_retry_count,
/*cbfcnp*/ cddone,
/*tag_action*/ MSG_SIMPLE_Q_TAG,
/*byte1_flags*/ 0,
/*format*/ SRTOC_FORMAT_TOC,
/*track*/ 0,
/*data_ptr*/ (uint8_t *)toch,
/*dxfer_len*/ sizeof(*toch),
/*sense_len*/ SSD_FULL_SIZE,
/*timeout*/ 50000);
start_ccb->ccb_h.ccb_bp = NULL;
start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_TOC_HDR;
xpt_action(start_ccb);
break;
}
case CD_STATE_MEDIA_TOC_FULL: {
bzero(&softc->toc, sizeof(softc->toc));
scsi_read_toc(&start_ccb->csio,
/*retries*/ cd_retry_count,
/*cbfcnp*/ cddone,
/*tag_action*/ MSG_SIMPLE_Q_TAG,
/*byte1_flags*/ 0,
/*format*/ SRTOC_FORMAT_TOC,
/*track*/ 0,
/*data_ptr*/ (uint8_t *)&softc->toc,
/*dxfer_len*/ softc->toc_read_len ?
softc->toc_read_len :
sizeof(softc->toc),
/*sense_len*/ SSD_FULL_SIZE,
/*timeout*/ 50000);
start_ccb->ccb_h.ccb_bp = NULL;
start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_TOC_FULL;
xpt_action(start_ccb);
break;
}
case CD_STATE_MEDIA_TOC_LEAD: {
struct cd_toc_single *leadout;
leadout = &softc->leadout;
bzero(leadout, sizeof(*leadout));
scsi_read_toc(&start_ccb->csio,
/*retries*/ cd_retry_count,
/*cbfcnp*/ cddone,
/*tag_action*/ MSG_SIMPLE_Q_TAG,
/*byte1_flags*/ CD_MSF,
/*format*/ SRTOC_FORMAT_TOC,
/*track*/ LEADOUT,
/*data_ptr*/ (uint8_t *)leadout,
/*dxfer_len*/ sizeof(*leadout),
/*sense_len*/ SSD_FULL_SIZE,
/*timeout*/ 50000);
start_ccb->ccb_h.ccb_bp = NULL;
start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_TOC_LEAD;
xpt_action(start_ccb);
break;
}
@ -1251,6 +1384,293 @@ cddone(struct cam_periph *periph, union ccb *done_ccb)
cam_periph_release_locked(periph);
return;
}
case CD_CCB_MEDIA_ALLOW:
case CD_CCB_MEDIA_PREVENT:
{
int error;
int is_prevent;
error = 0;
if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
error = cderror(done_ccb, CAM_RETRY_SELTO,
SF_RETRY_UA | SF_NO_PRINT);
}
if (error == ERESTART)
return;
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);
/*
* Note that just like the original cdcheckmedia(), we do
* a prevent without failing the whole operation if the
* prevent fails. We try, but keep going if it doesn't
* work.
*/
if ((done_ccb->ccb_h.ccb_state & CD_CCB_TYPE_MASK) ==
CD_CCB_MEDIA_PREVENT)
is_prevent = 1;
else
is_prevent = 0;
xpt_release_ccb(done_ccb);
if (is_prevent != 0) {
if (error == 0)
softc->flags |= CD_FLAG_DISC_LOCKED;
else
softc->flags &= ~CD_FLAG_DISC_LOCKED;
softc->state = CD_STATE_MEDIA_SIZE;
xpt_schedule(periph, CAM_PRIORITY_NORMAL);
} else {
if (error == 0)
softc->flags &= ~CD_FLAG_DISC_LOCKED;
softc->state = CD_STATE_NORMAL;
if (bioq_first(&softc->bio_queue) != NULL)
xpt_schedule(periph, CAM_PRIORITY_NORMAL);
}
return;
}
case CD_CCB_MEDIA_SIZE:
{
struct scsi_read_capacity_data *rdcap;
int error;
error = 0;
if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
error = cderror(done_ccb, CAM_RETRY_SELTO,
SF_RETRY_UA | SF_NO_PRINT);
}
if (error == ERESTART)
return;
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);
rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
if (error == 0) {
softc->params.disksize =scsi_4btoul(rdcap->addr) + 1;
softc->params.blksize = scsi_4btoul(rdcap->length);
/* Make sure we got at least some block size. */
if (softc->params.blksize == 0)
error = EIO;
/*
* SCSI-3 mandates that the reported blocksize shall be
* 2048. Older drives sometimes report funny values,
* trim it down to 2048, or other parts of the kernel
* will get confused.
*
* XXX we leave drives alone that might report 512
* bytes, as well as drives reporting more weird
* sizes like perhaps 4K.
*/
if (softc->params.blksize > 2048
&& softc->params.blksize <= 2352)
softc->params.blksize = 2048;
}
free(rdcap, M_SCSICD);
if (error == 0) {
softc->disk->d_sectorsize = softc->params.blksize;
softc->disk->d_mediasize =
(off_t)softc->params.blksize *
softc->params.disksize;
softc->flags |= CD_FLAG_SAW_MEDIA | CD_FLAG_VALID_MEDIA;
softc->state = CD_STATE_MEDIA_TOC_HDR;
} else {
softc->flags &= ~(CD_FLAG_VALID_MEDIA |
CD_FLAG_VALID_TOC);
bioq_flush(&softc->bio_queue, NULL, EINVAL);
softc->state = CD_STATE_MEDIA_ALLOW;
cdmediaprobedone(periph);
}
xpt_release_ccb(done_ccb);
xpt_schedule(periph, CAM_PRIORITY_NORMAL);
return;
}
case CD_CCB_MEDIA_TOC_HDR:
case CD_CCB_MEDIA_TOC_FULL:
case CD_CCB_MEDIA_TOC_LEAD:
{
int error;
struct ioc_toc_header *toch;
int num_entries;
int cdindex;
error = 0;
if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
error = cderror(done_ccb, CAM_RETRY_SELTO,
SF_RETRY_UA | SF_NO_PRINT);
}
if (error == ERESTART)
return;
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);
/*
* We will get errors here for media that doesn't have a table
* of contents. According to the MMC-3 spec: "When a Read
* TOC/PMA/ATIP command is presented for a DDCD/CD-R/RW media,
* where the first TOC has not been recorded (no complete
* session) and the Format codes 0000b, 0001b, or 0010b are
* specified, this command shall be rejected with an INVALID
* FIELD IN CDB. Devices that are not capable of reading an
* incomplete session on DDC/CD-R/RW media shall report
* CANNOT READ MEDIUM - INCOMPATIBLE FORMAT."
*
* So this isn't fatal if we can't read the table of contents,
* it just means that the user won't be able to issue the
* play tracks ioctl, and likely lots of other stuff won't
* work either. They need to burn the CD before we can do
* a whole lot with it. So we don't print anything here if
* we get an error back.
*
* We also bail out if the drive doesn't at least give us
* the full TOC header.
*/
if ((error != 0)
|| ((csio->dxfer_len - csio->resid) <
sizeof(struct ioc_toc_header))) {
softc->flags &= ~CD_FLAG_VALID_TOC;
bzero(&softc->toc, sizeof(softc->toc));
/*
* Failing the TOC read is not an error.
*/
softc->state = CD_STATE_NORMAL;
xpt_release_ccb(done_ccb);
cdmediaprobedone(periph);
/*
* Go ahead and schedule I/O execution if there is
* anything in the queue. It'll probably get
* kicked out with an error.
*/
if (bioq_first(&softc->bio_queue) != NULL)
xpt_schedule(periph, CAM_PRIORITY_NORMAL);
return;
}
/*
* Note that this is NOT the storage location used for the
* leadout!
*/
toch = &softc->toc.header;
if (softc->quirks & CD_Q_BCD_TRACKS) {
toch->starting_track = bcd2bin(toch->starting_track);
toch->ending_track = bcd2bin(toch->ending_track);
}
/* Number of TOC entries, plus leadout */
num_entries = (toch->ending_track - toch->starting_track) + 2;
cdindex = toch->starting_track + num_entries -1;
if ((done_ccb->ccb_h.ccb_state & CD_CCB_TYPE_MASK) ==
CD_CCB_MEDIA_TOC_HDR) {
if (num_entries <= 0) {
softc->flags &= ~CD_FLAG_VALID_TOC;
bzero(&softc->toc, sizeof(softc->toc));
/*
* Failing the TOC read is not an error.
*/
softc->state = CD_STATE_NORMAL;
xpt_release_ccb(done_ccb);
cdmediaprobedone(periph);
/*
* Go ahead and schedule I/O execution if
* there is anything in the queue. It'll
* probably get kicked out with an error.
*/
if (bioq_first(&softc->bio_queue) != NULL)
xpt_schedule(periph,
CAM_PRIORITY_NORMAL);
} else {
softc->toc_read_len = num_entries *
sizeof(struct cd_toc_entry);
softc->toc_read_len += sizeof(*toch);
softc->state = CD_STATE_MEDIA_TOC_FULL;
xpt_release_ccb(done_ccb);
xpt_schedule(periph, CAM_PRIORITY_NORMAL);
}
return;
} else if ((done_ccb->ccb_h.ccb_state & CD_CCB_TYPE_MASK) ==
CD_CCB_MEDIA_TOC_LEAD) {
struct cd_toc_single *leadout;
leadout = (struct cd_toc_single *)csio->data_ptr;
softc->toc.entries[cdindex - toch->starting_track] =
leadout->entry;
} else if (((done_ccb->ccb_h.ccb_state & CD_CCB_TYPE_MASK) ==
CD_CCB_MEDIA_TOC_FULL)
&& (cdindex == toch->ending_track + 1)) {
/*
* XXX KDM is this necessary? Probably only if the
* drive doesn't return leadout information with the
* table of contents.
*/
softc->state = CD_STATE_MEDIA_TOC_LEAD;
xpt_release_ccb(done_ccb);
xpt_schedule(periph, CAM_PRIORITY_NORMAL);
return;
}
if (softc->quirks & CD_Q_BCD_TRACKS) {
for (cdindex = 0; cdindex < num_entries - 1; cdindex++){
softc->toc.entries[cdindex].track =
bcd2bin(softc->toc.entries[cdindex].track);
}
}
softc->flags |= CD_FLAG_VALID_TOC;
/* If the first track is audio, correct sector size. */
if ((softc->toc.entries[0].control & 4) == 0) {
softc->disk->d_sectorsize =softc->params.blksize = 2352;
softc->disk->d_mediasize =
(off_t)softc->params.blksize *
softc->params.disksize;
}
softc->state = CD_STATE_NORMAL;
/*
* 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->disk->d_devstat->flags & DEVSTAT_BS_UNAVAILABLE)!=0)
softc->disk->d_devstat->flags &=
~DEVSTAT_BS_UNAVAILABLE;
softc->disk->d_devstat->block_size = softc->params.blksize;
xpt_release_ccb(done_ccb);
cdmediaprobedone(periph);
if (bioq_first(&softc->bio_queue) != NULL)
xpt_schedule(periph, CAM_PRIORITY_NORMAL);
return;
}
default:
break;
}
@ -1343,7 +1763,7 @@ cdioctl(struct disk *dp, u_long cmd, void *addr, int flag, struct thread *td)
&& ((cmd != CDIOCCLOSE)
&& (cmd != CDIOCEJECT))
&& (IOCGROUP(cmd) == 'c')) {
error = cdcheckmedia(periph);
error = cdcheckmedia(periph, /*do_wait*/ 1);
if (error != 0) {
cam_periph_unhold(periph);
cam_periph_unlock(periph);
@ -2227,10 +2647,65 @@ cdprevent(struct cam_periph *periph, int action)
}
}
static void
cdmediaprobedone(struct cam_periph *periph)
{
struct cd_softc *softc;
softc = (struct cd_softc *)periph->softc;
softc->flags &= ~CD_FLAG_MEDIA_SCAN_ACT;
if ((softc->flags & CD_FLAG_MEDIA_WAIT) != 0) {
softc->flags &= ~CD_FLAG_MEDIA_WAIT;
wakeup(&softc->toc);
}
}
/*
* XXX: the disk media and sector size is only really able to change
* XXX: while the device is closed.
*/
static int
cdcheckmedia(struct cam_periph *periph, int do_wait)
{
struct cd_softc *softc;
int error;
softc = (struct cd_softc *)periph->softc;
error = 0;
if ((do_wait != 0)
&& ((softc->flags & CD_FLAG_MEDIA_WAIT) == 0)) {
softc->flags |= CD_FLAG_MEDIA_WAIT;
}
if ((softc->flags & CD_FLAG_MEDIA_SCAN_ACT) == 0) {
softc->state = CD_STATE_MEDIA_PREVENT;
softc->flags |= CD_FLAG_MEDIA_SCAN_ACT;
xpt_schedule(periph, CAM_PRIORITY_NORMAL);
}
if (do_wait == 0)
goto bailout;
error = msleep(&softc->toc, cam_periph_mtx(periph), PRIBIO,"cdmedia",0);
if (error != 0)
goto bailout;
/*
* Check to see whether we have a valid size from the media. We
* may or may not have a valid TOC.
*/
if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
error = EINVAL;
bailout:
return (error);
}
#if 0
static int
cdcheckmedia(struct cam_periph *periph)
{
@ -2371,6 +2846,7 @@ cdcheckmedia(struct cam_periph *periph)
return (error);
}
#endif
static int
cdsize(struct cam_periph *periph, u_int32_t *size)
@ -2650,7 +3126,6 @@ static int
cdreadtoc(struct cam_periph *periph, u_int32_t mode, u_int32_t start,
u_int8_t *data, u_int32_t len, u_int32_t sense_flags)
{
struct scsi_read_toc *scsi_cmd;
u_int32_t ntoc;
struct ccb_scsiio *csio;
union ccb *ccb;
@ -2663,28 +3138,17 @@ cdreadtoc(struct cam_periph *periph, u_int32_t mode, u_int32_t start,
csio = &ccb->csio;
cam_fill_csio(csio,
scsi_read_toc(csio,
/* retries */ cd_retry_count,
/* cbfcnp */ NULL,
/* flags */ CAM_DIR_IN,
/* tag_action */ MSG_SIMPLE_Q_TAG,
/* byte1_flags */ (mode == CD_MSF_FORMAT) ? CD_MSF : 0,
/* format */ SRTOC_FORMAT_TOC,
/* track*/ start,
/* data_ptr */ 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;
/* timeout */ 50000);
error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
/*sense_flags*/SF_RETRY_UA | sense_flags);
@ -3743,3 +4207,38 @@ scsi_read_dvd_structure(struct ccb_scsiio *csio, u_int32_t retries,
sizeof(*scsi_cmd),
timeout);
}
void
scsi_read_toc(struct ccb_scsiio *csio, uint32_t retries,
void (*cbfcnp)(struct cam_periph *, union ccb *),
uint8_t tag_action, uint8_t byte1_flags, uint8_t format,
uint8_t track, uint8_t *data_ptr, uint32_t dxfer_len,
int sense_len, int timeout)
{
struct scsi_read_toc *scsi_cmd;
scsi_cmd = (struct scsi_read_toc *)&csio->cdb_io.cdb_bytes;
bzero(scsi_cmd, sizeof(*scsi_cmd));
scsi_cmd->op_code = READ_TOC;
/*
* The structure is counting from 1, the function counting from 0.
* The spec counts from 0. In MMC-6, there is only one flag, the
* MSF flag. But we put the whole byte in for a bit a future-proofing.
*/
scsi_cmd->byte2 = byte1_flags;
scsi_cmd->format = format;
scsi_cmd->from_track = track;
scsi_ulto2b(dxfer_len, scsi_cmd->data_len);
cam_fill_csio(csio,
/* retries */ retries,
/* cbfcnp */ cbfcnp,
/* flags */ CAM_DIR_IN,
/* tag_action */ tag_action,
/* data_ptr */ data_ptr,
/* dxfer_len */ dxfer_len,
/* sense_len */ sense_len,
sizeof(*scsi_cmd),
/* timeout */ timeout);
}

12
sys/cam/scsi/scsi_cd.h
View File

@ -231,6 +231,12 @@ struct scsi_read_toc
u_int8_t op_code;
u_int8_t byte2;
u_int8_t format;
#define SRTOC_FORMAT_TOC 0x00
#define SRTOC_FORMAT_LAST_ADDR 0x01
#define SRTOC_FORMAT_QSUB_TOC 0x02
#define SRTOC_FORMAT_QSUB_PMA 0x03
#define SRTOC_FORMAT_ATIP 0x04
#define SRTOC_FORMAT_CD_TEXT 0x05
u_int8_t unused[3];
u_int8_t from_track;
u_int8_t data_len[2];
@ -871,6 +877,12 @@ void scsi_read_dvd_structure(struct ccb_scsiio *csio, u_int32_t retries,
u_int32_t dxfer_len, u_int8_t sense_len,
u_int32_t timeout);
void scsi_read_toc(struct ccb_scsiio *csio, uint32_t retries,
void (*cbfcnp)(struct cam_periph *, union ccb *),
uint8_t tag_action, uint8_t byte1_flags, uint8_t format,
uint8_t track, uint8_t *data_ptr, uint32_t dxfer_len,
int sense_len, int timeout);
__END_DECLS
#endif /*_SCSI_SCSI_CD_H*/