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Fixed ATAPI PIO operation and ATAPI DMA timings.

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This commit is contained in:
OBattler
2025-02-13 04:28:05 +01:00
parent 9a1ae5997f
commit 8a66dbef37
2 changed files with 125 additions and 53 deletions
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62
src/scsi/scsi_cdrom.c
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@@ -15,6 +15,7 @@
*/
#include <inttypes.h>
#include <math.h>
// #define ENABLE_SCSI_CDROM_LOG 2
#ifdef ENABLE_SCSI_CDROM_LOG
#include <stdarg.h>
#endif
@@ -611,8 +612,8 @@ scsi_cdrom_update_request_length(scsi_cdrom_t *dev, int len, const int block_len
}
}
if (dev->drv->bus_type != CDROM_BUS_SCSI)
dev->requested_blocks = 1;
if ((dev->drv->bus_type != CDROM_BUS_SCSI) && (dev->block_len != 0))
dev->requested_blocks = (dev->packet_len / dev->block_len);
fallthrough;
default:
@@ -667,9 +668,9 @@ scsi_cdrom_set_period(scsi_cdrom_t *dev)
scsi_cdrom_log(dev->log, "Current speed: %ix\n", dev->drv->cur_speed);
if (dev->packet_status == PHASE_COMPLETE)
dev->callback = 0;
else {
dev->callback = 0;
if (dev->packet_status != PHASE_COMPLETE) {
double bytes_per_second;
double period;
@@ -689,6 +690,7 @@ scsi_cdrom_set_period(scsi_cdrom_t *dev)
/* 44100 * 16 bits * 2 channels = 176400 bytes per second */
bytes_per_second = 176400.0;
bytes_per_second *= (double) dev->drv->cur_speed;
// pclog("Current speed: %ix\n", dev->drv->cur_speed);
} else {
bytes_per_second = scsi_cdrom_bus_speed(dev);
if (bytes_per_second == 0.0) {
@@ -703,8 +705,11 @@ scsi_cdrom_set_period(scsi_cdrom_t *dev)
if (dev->was_cached == -1)
period *= (double) dev->packet_len;
else {
const int num = (dev->drv->bus_type == CDROM_BUS_SCSI) ?
dev->requested_blocks : 1;
const int num = ((dev->drv->bus_type == CDROM_BUS_SCSI) ||
(dev->block_len == 0)) ?
dev->requested_blocks :
((scsi_cdrom_current_mode(dev) == 2) ? 1 :
(dev->packet_len / dev->block_len));
period *= ((double) num) * 2352.0;
pclog("[%02X] Calculated period for %i * 2352 bytes\n", cmd, num);
@@ -1045,7 +1050,7 @@ scsi_cdrom_read_data(scsi_cdrom_t *dev, const int msf, const int type, const int
{
int temp_len = 0;
int ret = 0;
const int num = (dev->drv->bus_type == CDROM_BUS_SCSI) ?
int num = (dev->drv->bus_type == CDROM_BUS_SCSI) ?
dev->requested_blocks : 1;
if (dev->drv->cd_status == CD_STATUS_EMPTY)
@@ -1065,15 +1070,20 @@ scsi_cdrom_read_data(scsi_cdrom_t *dev, const int msf, const int type, const int
else if (ret == 0)
scsi_cdrom_illegal_mode(dev);
else {
if (dev->block_len == 0xffffffff)
if (dev->block_len == 0xffffffff) {
dev->block_len = temp_len;
if ((dev->drv->bus_type != CDROM_BUS_SCSI) &&
(scsi_cdrom_current_mode(dev) != 2))
num = (dev->packet_len / dev->block_len);
}
dev->sector_pos++;
dev->drv->seek_pos = dev->sector_pos;
dev->sector_len--;
pclog("Sector read to buffer position %08X\n", dev->buffer_pos);
// pclog("Sector read to buffer position %08X\n", dev->buffer_pos);
dev->buffer_pos += temp_len;
}
}
@@ -1547,17 +1557,17 @@ static void
scsi_cdrom_read(scsi_common_t *sc)
{
scsi_cdrom_t *dev = (scsi_cdrom_t *) sc;
const int osl = dev->sector_len;
const int ret = scsi_cdrom_read_blocks(dev);
dev->drv->seek_diff = 0;
if (ret > 0) {
if (dev->packet_status != PHASE_COMPLETE) {
ui_sb_update_icon(SB_CDROM | dev->id, 1);
if (osl > 0)
scsi_cdrom_set_period(dev);
} else
ui_sb_update_icon(SB_CDROM | dev->id, 0);
ui_sb_update_icon(SB_CDROM | dev->id,
(dev->packet_status != PHASE_COMPLETE));
} else
scsi_cdrom_media_access_complete(dev, ret);
}
@@ -2461,7 +2471,7 @@ scsi_cdrom_command(scsi_common_t *sc, const uint8_t *cdb)
break;
case GPCMD_REZERO_UNIT:
pclog("Rezero unit\n");
// pclog("Rezero unit\n");
dev->was_cached = 0;
scsi_cdrom_stop(sc);
dev->requested_blocks = 0;
@@ -2496,7 +2506,7 @@ scsi_cdrom_command(scsi_common_t *sc, const uint8_t *cdb)
case GPCMD_SCAN_PIONEER:
case GPCMD_AUDIO_SCAN:
pclog("Audio scan\n");
// pclog("Audio scan\n");
scsi_cdrom_set_phase(dev, SCSI_PHASE_STATUS);
dev->was_cached = 0;
@@ -2543,7 +2553,7 @@ scsi_cdrom_command(scsi_common_t *sc, const uint8_t *cdb)
scsi_cdrom_buf_alloc(dev, 65536);
toc_format = cdb[2] & 0xf;
pclog("READ TOC format %1X\n", toc_format);
// pclog("READ TOC format %1X\n", toc_format);
if (toc_format == 0)
toc_format = (cdb[9] >> 6) & 3;
@@ -3161,20 +3171,20 @@ scsi_cdrom_command(scsi_common_t *sc, const uint8_t *cdb)
msf = 0;
pos = (cdb[2] << 24) | (cdb[3] << 16) | (cdb[4] << 8) | cdb[5];
len = (cdb[7] << 8) | cdb[8];
pclog("Play audio (10)\n");
// pclog("Play audio (10)\n");
break;
case GPCMD_PLAY_AUDIO_12:
msf = 0;
pos = (cdb[2] << 24) | (cdb[3] << 16) | (cdb[4] << 8) | cdb[5];
len = (cdb[6] << 24) | (cdb[7] << 16) | (cdb[8] << 8) | cdb[9];
pclog("Play audio (12)\n");
// pclog("Play audio (12)\n");
break;
case GPCMD_PLAY_AUDIO_MSF:
msf = 1;
pos = (cdb[3] << 16) | (cdb[4] << 8) | cdb[5];
len = (cdb[6] << 16) | (cdb[7] << 8) | cdb[8];
pclog("Play audio MSF: %2i:%02i.%02i-%2i:%02i.%02i\n",
cdb[3], cdb[4], cdb[5], cdb[6], cdb[7], cdb[8]);
// pclog("Play audio MSF: %2i:%02i.%02i-%2i:%02i.%02i\n",
// cdb[3], cdb[4], cdb[5], cdb[6], cdb[7], cdb[8]);
break;
case GPCMD_PLAY_AUDIO_TRACK_INDEX:
msf = 2;
@@ -3183,19 +3193,19 @@ scsi_cdrom_command(scsi_common_t *sc, const uint8_t *cdb)
len = cdb[7];
} else
ret = 0;
pclog("Play audio track index\n");
// pclog("Play audio track index\n");
break;
case GPCMD_PLAY_AUDIO_TRACK_RELATIVE_10:
msf = 0x100 | cdb[6];
pos = (cdb[2] << 24) | (cdb[3] << 16) | (cdb[4] << 8) | cdb[5];
len = (cdb[7] << 8) | cdb[8];
pclog("Play audio track relative (10)\n");
// pclog("Play audio track relative (10)\n");
break;
case GPCMD_PLAY_AUDIO_TRACK_RELATIVE_12:
msf = 0x100 | cdb[10];
pos = (cdb[2] << 24) | (cdb[3] << 16) | (cdb[4] << 8) | cdb[5];
len = (cdb[6] << 24) | (cdb[7] << 16) | (cdb[8] << 8) | cdb[9];
pclog("Play audio track relative (12)\n");
// pclog("Play audio track relative (12)\n");
break;
default:
@@ -3495,7 +3505,7 @@ atapi_out:
case GPCMD_SEEK_6:
case GPCMD_SEEK_10:
pclog("Seek\n");
// pclog("Seek\n");
scsi_cdrom_set_phase(dev, SCSI_PHASE_STATUS);
dev->was_cached = 0;