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ATAPI PIO: Do not prematurely terminate the command if bytes are left to be transferred but all sectors have already been read into the buffer, fixes FreeBSD CD-ROM boot on some machines.

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This commit is contained in:
OBattler
2025-03-17 16:54:41 +01:00
parent 49463607c1
commit 277273c05d
1 changed files with 24 additions and 11 deletions
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35
src/disk/hdc_ide.c
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@@ -1197,7 +1197,8 @@ ide_atapi_callback(ide_t *ide)
static void
ide_atapi_pio_request(ide_t *ide, uint8_t out)
{
scsi_common_t *dev = ide->sc;
scsi_common_t *dev = ide->sc;
int left = 0;
ide_irq_lower(ide);
@@ -1221,6 +1222,8 @@ ide_atapi_pio_request(ide_t *ide, uint8_t out)
ide_log("%i bytes %s, %i bytes are still left\n", ide->tf->pos,
out ? "written" : "read", dev->packet_len - ide->tf->pos);
left = 1;
/*
If less than (packet length) bytes are remaining, update packet length
accordingly.
@@ -1252,23 +1255,33 @@ ide_atapi_pio_request(ide_t *ide, uint8_t out)
ide->write(dev);
if (dev->sector_len == 0) {
ide->sc->packet_status = PHASE_COMPLETE;
ide->sc->callback = 0.0;
if (left) {
ide_atapi_callback(ide);
ide_set_callback(ide, 0.0);
} else {
ide->sc->packet_status = PHASE_COMPLETE;
ide->sc->callback = 0.0;
if (ide->phase_data_out != NULL)
(void) ide->phase_data_out(dev);
if (ide->phase_data_out != NULL)
(void) ide->phase_data_out(dev);
ide_atapi_callback(ide);
ide_atapi_callback(ide);
}
}
} else {
if (dev->sector_len == 0) {
if (ide->command_stop != NULL)
ide->command_stop(dev);
if (left) {
ide_atapi_callback(ide);
ide_set_callback(ide, 0.0);
} else {
if (ide->command_stop != NULL)
ide->command_stop(dev);
ide->sc->packet_status = PHASE_COMPLETE;
ide->sc->callback = 0.0;
ide->sc->packet_status = PHASE_COMPLETE;
ide->sc->callback = 0.0;
ide_atapi_callback(ide);
ide_atapi_callback(ide);
}
} else if (ide->read != NULL)
ide->read(dev);
}