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Enabled recognition of QEMU DVD-ROM 0.12 as ATAPI drive

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This commit is contained in:
Thomas Schmitt 2011-10-31 16:43:02 +00:00
parent 5cbc7fe6ac
commit 8ee4e78bc2
3 changed files with 28 additions and 5 deletions
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2
libburn/trunk/cdrskin/cdrskin_timestamp.h
View File

@ -1 +1 @@
#define Cdrskin_timestamP "2011.10.27.094705"
#define Cdrskin_timestamP "2011.10.31.164236"

17
libburn/trunk/libburn/mmc.c
View File

@ -1735,6 +1735,7 @@ static int mmc_read_disc_info_al(struct burn_drive *d, int *alloc_len)
/* ts A70131 : had to move mmc_read_toc() to end of function */
int do_read_toc = 0, disc_status, len, old_alloc_len;
int ret, number_of_sessions = -1;
int key, asc, ascq;
BURN_ALLOC_MEM(buf, struct buffer, 1);
BURN_ALLOC_MEM(c, struct command, 1);
@ -1772,6 +1773,22 @@ static int mmc_read_disc_info_al(struct burn_drive *d, int *alloc_len)
d->issue_command(d, c);
if (c->error) {
spc_decode_sense(c->sense, 0, &key, &asc, &ascq);
if (key == 5 && asc == 0x20 && ascq == 0) {
/* ts B11031 : qemu -cdrom does not know
051h READ DISC INFORMATION
*/
ret = mmc_read_toc_fmt0(d);
if (ret > 0) {
/* >>> ??? anything more to be set ? */;
mmc_read_capacity(d);
*alloc_len = 0;
goto ex;
}
}
d->busy = BURN_DRIVE_IDLE;
{ret = 0; goto ex;}
}

14
libburn/trunk/libburn/spc.c
View File

@ -398,6 +398,8 @@ static int spc_sense_caps_al(struct burn_drive *d, int *alloc_len, int flag)
2Ah is part of MMC-1 to MMC-3. In MMC-1 5.2.3.4. it has 22 bytes,
in MMC-3 6.3.11 there are at least 28 bytes plus a variable length
set of speed descriptors. In MMC-5 E.11 it is declared "legacy".
ts B11031 : qemu emulates a pre-MMC-1 "DVD-ROM" (which makes not
much sense as DVD appeared first in MMC-3)
*/
/* ts A90603 :
SPC-1 8.3.3 enumerates mode page format bytes from 0 to n and
@ -412,7 +414,8 @@ static int spc_sense_caps_al(struct burn_drive *d, int *alloc_len, int flag)
page_length = old_alloc_len - 10;
/* ts A90602 : 20 asserts page[21]. (see SPC-1 8.3.3) */
if (page_length < 20) {
/* ts B11031 : qemu drive has a page_length of 18 */
if (page_length < 18) {
m->valid = -1;
sprintf(msg, "MODE SENSE page 2A too short: %s : %d",
d->devname, page_length);
@ -441,8 +444,11 @@ static int spc_sense_caps_al(struct burn_drive *d, int *alloc_len, int flag)
m->max_read_speed = page[8] * 256 + page[9];
m->cur_read_speed = page[14] * 256 + page[15];
m->max_write_speed = page[18] * 256 + page[19];
m->cur_write_speed = page[20] * 256 + page[21];
m->max_write_speed = m->cur_write_speed = 0;
if (page_length >= 20)
m->max_write_speed = page[18] * 256 + page[19];
if (page_length >= 22)
m->cur_write_speed = page[20] * 256 + page[21];
/* ts A61021 : New field to be set by atip (or following MMC-3 info) */
m->min_write_speed = m->max_write_speed;
@ -542,7 +548,7 @@ ex:
void spc_sense_caps(struct burn_drive *d)
{
int alloc_len, start_len = 30, ret;
int alloc_len, start_len = 28, ret;
mmc_start_if_needed(d, 1);
if (mmc_function_spy(d, "sense_caps") <= 0)