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Several CD-ROM fixes.

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This commit is contained in:
OBattler
2018-03-20 18:32:18 +01:00
parent f87500ddbf
commit df746297c2
6 changed files with 46 additions and 28 deletions
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42
src/cdrom/cdrom.c
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@@ -9,7 +9,7 @@
* Implementation of the CD-ROM drive with SCSI(-like)
* commands, for both ATAPI and SCSI usage.
*
* Version: @(#)cdrom.c 1.0.42 2018/03/19
* Version: @(#)cdrom.c 1.0.43 2018/03/20
*
* Author: Miran Grca, <mgrca8@gmail.com>
*
@@ -128,7 +128,7 @@ const uint8_t cdrom_command_flags[0x100] =
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0,
IMPLEMENTED | CHECK_READY,
IMPLEMENTED | CHECK_READY | ALLOW_UA, /* Read TOC - can get through UNIT_ATTENTION, per VIDE-CDD.SYS
IMPLEMENTED | CHECK_READY, /* Read TOC - can get through UNIT_ATTENTION, per VIDE-CDD.SYS
NOTE: The ATAPI reference says otherwise, but I think this is a question of
interpreting things right - the UNIT ATTENTION condition we have here
is a tradition from not ready to ready, by definition the drive
@@ -449,10 +449,19 @@ void cdrom_init(int id, int cdb_len_setting)
{
cdrom_t *dev;
uint8_t *trcbuf;
uint32_t tcap;
if (id >= CDROM_NUM)
return;
dev = cdrom[id];
tcap = dev->cdrom_capacity;
trcbuf = (uint8_t *) malloc(16);
memcpy(trcbuf, dev->rcbuf, 16);
memset(dev, 0, sizeof(cdrom_t));
memcpy(dev->rcbuf, trcbuf, 16);
free(trcbuf);
dev->cdrom_capacity = tcap;
dev->requested_blocks = 1;
if (cdb_len_setting <= 1)
dev->cdb_len_setting = cdb_len_setting;
@@ -468,7 +477,6 @@ void cdrom_init(int id, int cdb_len_setting)
cdrom_log("CD-ROM %i: Bus type %i, bus mode %i\n", id, cdrom_drives[id].bus_type, cdrom_drives[id].bus_mode);
if (cdrom_drives[id].bus_type < CDROM_BUS_SCSI)
cdrom_set_signature(id);
cdrom_drives[id].max_blocks_at_once = 85;
dev->status = READY_STAT | DSC_STAT;
dev->pos = 0;
dev->packet_status = 0xff;
@@ -1236,29 +1244,29 @@ int cdrom_read_data(uint8_t id, int msf, int type, int flags, uint32_t *len)
int last_valid_data_pos = 0;
if (cdrom_drives[id].handler->pass_through) {
cdsize = cdrom_drives[id].handler->size(id);
cdsize = cdrom_drives[id].handler->size(id);
if (dev->sector_pos >= cdsize) {
cdrom_log("CD-ROM %i: Trying to read from beyond the end of disc (%i >= %i)\n", id, dev->sector_pos, cdsize);
cdrom_lba_out_of_range(id);
return 0;
}
if ((dev->sector_pos + dev->sector_len - 1) >= cdsize) {
cdrom_log("CD-ROM %i: Trying to read to beyond the end of disc (%i >= %i)\n", id, (dev->sector_pos + dev->sector_len - 1), cdsize);
cdrom_lba_out_of_range(id);
return 0;
}
if (cdrom_drives[id].handler->pass_through) {
ret = cdrom_pass_through(id, len, dev->current_cdb, cdbufferb + dev->data_pos);
dev->data_pos += *len;
if (!ret)
return 0;
if (dev->sector_pos > (cdsize - 1)) {
/* cdrom_log("CD-ROM %i: Trying to read beyond the end of disc\n", id); */
cdrom_lba_out_of_range(id);
return 0;
}
dev->old_len = *len;
} else {
if (dev->sector_pos > (cdrom_drives[id].handler->size(id) - 1)) {
/* cdrom_log("CD-ROM %i: Trying to read beyond the end of disc\n", id); */
cdrom_lba_out_of_range(id);
return 0;
}
dev->old_len = 0;
*len = 0;