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Duplicate the TOC handling ioctls from the cd(4) driver. Duplicating

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the work is silly, and all this will be a moot point with Justin's CAM
driver, and there are still many ioctls missing -- but i need these
right now.  It's silly to need to move the CD-R back to the other
drive in order to determine the session start info when burning multi-
session CD-Rs.
This commit is contained in:
Joerg Wunsch 1997-05-05 13:35:01 +00:00
parent 3d4b9d32d8
commit 5adee135aa
1 changed files with 182 additions and 2 deletions
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184
sys/scsi/worm.c
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@ -43,7 +43,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: worm.c,v 1.35 1997/03/24 11:25:04 bde Exp $
* $Id: worm.c,v 1.36 1997/04/04 22:12:55 jkh Exp $
*/
#include "opt_bounce.h"
@ -53,6 +53,7 @@
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/proc.h>
#include <sys/cdio.h>
#include <sys/wormio.h>
#include <sys/fcntl.h>
#include <sys/conf.h>
@ -66,8 +67,8 @@
#include <scsi/scsi_disk.h>
#include <scsi/scsi_driver.h>
#include <scsi/scsi_worm.h>
#include <scsi/scsi_cd.h>
#include <sys/dkstat.h>
/* #include <scsi/scsi_cd.h> */ /* XXX a CD-R includes all CD functionality */
struct worm_quirks
{
@ -126,6 +127,9 @@ static void worm_strategy(struct buf *bp, struct scsi_link *sc_link);
static errval worm_quirk_select(struct scsi_link *sc_link, u_int32_t unit,
struct wormio_quirk_select *);
static errval worm_read_toc(struct scsi_link *sc_link,
u_int32_t mode, u_int32_t start,
struct cd_toc_entry *data, u_int32_t len);
static errval worm_rezero_unit(struct scsi_link *sc_link);
/* XXX should be moved out to an LKM */
@ -665,6 +669,150 @@ worm_ioctl(dev_t dev, int cmd, caddr_t addr, int flag, struct proc *p,
}
}
break;
case CDIOREADTOCHEADER:
{
struct ioc_toc_header th;
error = worm_read_toc(sc_link, 0, 0,
(struct cd_toc_entry *)&th,
sizeof th);
if (error)
break;
NTOHS(th.len);
bcopy(&th, addr, sizeof th);
}
break;
case CDIOREADTOCENTRYS:
{
struct {
struct ioc_toc_header header;
struct cd_toc_entry entries[100];
} data;
struct {
struct ioc_toc_header header;
struct cd_toc_entry entry;
} 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;
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;
break;
}
th = &data.header;
error = worm_read_toc(sc_link, 0, 0,
(struct cd_toc_entry *)th,
sizeof (*th));
if (error)
break;
if (starting_track == 0)
starting_track = th->starting_track;
else if (starting_track == 0xaa)
starting_track = th->ending_track + 1;
else if (starting_track < th->starting_track ||
starting_track > th->ending_track + 1) {
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)) {
error = EINVAL;
break;
}
num = len / sizeof(struct cd_toc_entry);
if (readlen > 0) {
error = worm_read_toc(sc_link,
te->address_format,
starting_track,
(struct cd_toc_entry *)&data,
readlen + sizeof (*th));
if (error)
break;
}
/* make leadout entry if needed */
idx = starting_track + num - 1;
if (idx == th->ending_track + 1) {
error = worm_read_toc(sc_link,
te->address_format, 0xaa,
(struct cd_toc_entry *)&lead,
sizeof(lead));
if (error)
break;
data.entries[idx - starting_track] = lead.entry;
}
error = copyout(data.entries, te->data, len);
}
break;
case CDIOREADTOCENTRY:
{
struct {
struct ioc_toc_header header;
struct cd_toc_entry entry;
} data;
struct ioc_read_toc_single_entry *te =
(struct ioc_read_toc_single_entry *) addr;
struct ioc_toc_header *th;
u_int32_t track;
if (te->address_format != CD_MSF_FORMAT
&& te->address_format != CD_LBA_FORMAT) {
error = EINVAL;
break;
}
th = &data.header;
error = worm_read_toc(sc_link, 0, 0,
(struct cd_toc_entry *)th,
sizeof (*th));
if (error)
break;
track = te->track;
if (track == 0)
track = th->starting_track;
else if (track == 0xaa)
/* OK */;
else if (track < th->starting_track ||
track > th->ending_track + 1) {
error = EINVAL;
break;
}
error = worm_read_toc(sc_link, te->address_format,
track,
(struct cd_toc_entry *)&data,
sizeof data);
if (error)
break;
bcopy(&data.entry, &te->entry,
sizeof(struct cd_toc_entry));
}
break;
default:
error = ENOTTY;
@ -697,6 +845,38 @@ worm_rezero_unit(struct scsi_link *sc_link)
0);
}
/*
* Read table of contents
*
* Stolen from cd.c
*/
static errval
worm_read_toc(struct scsi_link *sc_link, 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;
bzero(&scsi_cmd, sizeof(scsi_cmd));
ntoc = len;
scsi_cmd.op_code = READ_TOC;
if (mode == CD_MSF_FORMAT)
scsi_cmd.byte2 |= CD_MSF;
scsi_cmd.from_track = start;
scsi_cmd.data_len[0] = (ntoc) >> 8;
scsi_cmd.data_len[1] = (ntoc) & 0xff;
return (scsi_scsi_cmd(sc_link,
(struct scsi_generic *) &scsi_cmd,
sizeof(struct scsi_read_toc),
(u_char *) data,
len,
/*WORMRETRY*/ 4,
5000,
NULL,
SCSI_DATA_IN));
}
static errval
worm_quirk_select(struct scsi_link *sc_link, u_int32_t unit,
struct wormio_quirk_select *qs)