* CD emulation
****************************************************************/
+struct drive_s *cdemu_drive_gf VAR16VISIBLE;
+
static int
cdemu_read(struct disk_op_s *op)
{
int count = op->count;
op->count = 0;
- u8 *cdbuf_far = (void*)offsetof(struct extended_bios_data_area_s, cdemu_buf);
+ u8 *cdbuf_fl = GET_GLOBAL(bounce_buf_fl);
if (op->lba & 3) {
// Partial read of first block.
dop.count = 1;
- dop.buf_fl = MAKE_FLATPTR(ebda_seg, cdbuf_far);
+ dop.buf_fl = cdbuf_fl;
int ret = process_op(&dop);
if (ret)
return ret;
if (thiscount > count)
thiscount = count;
count -= thiscount;
- memcpy_far(FLATPTR_TO_SEG(op->buf_fl)
- , (void*)FLATPTR_TO_OFFSET(op->buf_fl)
- , ebda_seg, cdbuf_far + (op->lba & 3) * 512
- , thiscount * 512);
+ memcpy_fl(op->buf_fl, cdbuf_fl + (op->lba & 3) * 512, thiscount * 512);
op->buf_fl += thiscount * 512;
op->count += thiscount;
dop.lba++;
if (count) {
// Partial read on last block.
dop.count = 1;
- dop.buf_fl = MAKE_FLATPTR(ebda_seg, cdbuf_far);
+ dop.buf_fl = cdbuf_fl;
int ret = process_op(&dop);
if (ret)
return ret;
u8 thiscount = count;
- memcpy_far(FLATPTR_TO_SEG(op->buf_fl)
- , (void*)FLATPTR_TO_OFFSET(op->buf_fl)
- , ebda_seg, cdbuf_far, thiscount * 512);
+ memcpy_fl(op->buf_fl, cdbuf_fl, thiscount * 512);
op->count += thiscount;
}
}
}
-struct drive_s *cdemu_drive_gf VAR16VISIBLE;
-
void
cdemu_setup(void)
{
if (!CONFIG_CDROM_EMU)
return;
+ if (!CDCount)
+ return;
+ if (bounce_buf_init() < 0)
+ return;
struct drive_s *drive_g = malloc_fseg(sizeof(*drive_g));
- if (! drive_g) {
+ if (!drive_g) {
warn_noalloc();
- cdemu_drive_gf = NULL;
+ free(drive_g);
return;
}
- memset(drive_g, 0, sizeof(*drive_g));
cdemu_drive_gf = drive_g;
+ memset(drive_g, 0, sizeof(*drive_g));
drive_g->type = DTYPE_CDEMU;
drive_g->blksize = DISK_SECTOR_SIZE;
drive_g->sectors = (u64)-1;
* CD booting
****************************************************************/
-static int
-atapi_is_ready(struct disk_op_s *op)
-{
- dprintf(6, "atapi_is_ready (drive=%p)\n", op->drive_g);
-
- /* Retry READ CAPACITY for 5 seconds unless MEDIUM NOT PRESENT is
- * reported by the device. If the device reports "IN PROGRESS",
- * 30 seconds is added. */
- struct cdbres_read_capacity info;
- int in_progress = 0;
- u64 end = calc_future_tsc(5000);
- for (;;) {
- if (check_time(end)) {
- dprintf(1, "read capacity failed\n");
- return -1;
- }
-
- int ret = cdb_read_capacity(op, &info);
- if (!ret)
- // Success
- break;
-
- struct cdbres_request_sense sense;
- ret = cdb_get_sense(op, &sense);
- if (ret)
- // Error - retry.
- continue;
-
- // Sense succeeded.
- if (sense.asc == 0x3a) { /* MEDIUM NOT PRESENT */
- dprintf(1, "Device reports MEDIUM NOT PRESENT\n");
- return -1;
- }
-
- if (sense.asc == 0x04 && sense.ascq == 0x01 && !in_progress) {
- /* IN PROGRESS OF BECOMING READY */
- printf("Waiting for device to detect medium... ");
- /* Allow 30 seconds more */
- end = calc_future_tsc(30000);
- in_progress = 1;
- }
- }
-
- u32 blksize = ntohl(info.blksize), sectors = ntohl(info.sectors);
- if (blksize != GET_GLOBAL(op->drive_g->blksize)) {
- printf("Unsupported sector size %u\n", blksize);
- return -1;
- }
-
- dprintf(6, "sectors=%u\n", sectors);
- printf("%dMB medium detected\n", sectors>>(20-11));
- return 0;
-}
-
int
-cdrom_boot(int cdid)
+cdrom_boot(struct drive_s *drive_g)
{
struct disk_op_s dop;
+ int cdid = getDriveId(EXTTYPE_CD, drive_g);
memset(&dop, 0, sizeof(dop));
- dop.drive_g = getDrive(EXTTYPE_CD, cdid);
- if (!dop.drive_g)
+ dop.drive_g = drive_g;
+ if (!dop.drive_g || cdid < 0)
return 1;
- int ret = atapi_is_ready(&dop);
+ int ret = scsi_is_ready(&dop);
if (ret)
- dprintf(1, "atapi_is_ready returned %d\n", ret);
+ dprintf(1, "scsi_is_ready returned %d\n", ret);
// Read the Boot Record Volume Descriptor
u8 buffer[2048];