* CD emulation
****************************************************************/
+struct drive_s *cdemu_drive_gf VAR16VISIBLE;
+
static int
cdemu_read(struct disk_op_s *op)
{
u16 ebda_seg = get_ebda_seg();
- struct drive_s *drive_g = GET_EBDA2(ebda_seg, cdemu.emulated_drive);
+ struct drive_s *drive_g;
+ drive_g = GLOBALFLAT2GLOBAL(GET_EBDA2(ebda_seg, cdemu.emulated_drive_gf));
struct disk_op_s dop;
dop.drive_g = drive_g;
dop.command = op->command;
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 VAR16VISIBLE;
-
void
cdemu_setup(void)
{
if (!CONFIG_CDROM_EMU)
return;
+ if (!CDCount)
+ return;
+ if (bounce_buf_init() < 0)
+ return;
- struct drive_s *drive_g = allocDrive();
+ struct drive_s *drive_g = malloc_fseg(sizeof(*drive_g));
if (!drive_g) {
- cdemu_drive = NULL;
+ warn_noalloc();
+ free(drive_g);
return;
}
- cdemu_drive = ADJUST_GLOBAL_PTR(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;
SET_INT13ET(regs, media, GET_EBDA2(ebda_seg, cdemu.media));
SET_INT13ET(regs, emulated_drive
, GET_EBDA2(ebda_seg, cdemu.emulated_extdrive));
- struct drive_s *drive_g = GET_EBDA2(ebda_seg, cdemu.emulated_drive);
- u8 cntl_id = GET_GLOBAL(drive_g->cntl_id);
+ struct drive_s *drive_gf = GET_EBDA2(ebda_seg, cdemu.emulated_drive_gf);
+ u8 cntl_id = 0;
+ if (drive_gf)
+ cntl_id = GET_GLOBALFLAT(drive_gf->cntl_id);
SET_INT13ET(regs, controller_index, cntl_id / 2);
SET_INT13ET(regs, device_spec, cntl_id % 2);
SET_INT13ET(regs, ilba, GET_EBDA2(ebda_seg, cdemu.ilba));
* CD booting
****************************************************************/
-// Request SENSE
-static int
-atapi_get_sense(struct disk_op_s *op, u8 *asc, u8 *ascq)
-{
- struct cdb_request_sense cmd;
- struct cdbres_request_sense data;
- memset(&cmd, 0, sizeof(cmd));
- cmd.command = CDB_CMD_REQUEST_SENSE;
- cmd.length = sizeof(data);
- op->count = 1;
- op->buf_fl = &data;
- int ret = atapi_cmd_data(op, &cmd, sizeof(data));
- if (ret)
- return ret;
-
- *asc = data.asc;
- *ascq = data.ascq;
- return 0;
-}
-
-// Request capacity
-static int
-atapi_read_capacity(struct disk_op_s *op, u32 *blksize, u32 *sectors)
-{
- struct cdb_read_capacity cmd;
- struct cdbres_read_capacity data;
- memset(&cmd, 0, sizeof(cmd));
- cmd.command = CDB_CMD_READ_CAPACITY;
- op->count = 1;
- op->buf_fl = &data;
- int ret = atapi_cmd_data(op, &cmd, sizeof(data));
- if (ret)
- return ret;
-
- *blksize = ntohl(data.blksize);
- *sectors = ntohl(data.sectors);
- return 0;
-}
-
-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. */
- u32 blksize, sectors;
- 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 = atapi_read_capacity(op, &blksize, §ors);
- if (!ret)
- // Success
- break;
-
- u8 asc, ascq;
- ret = atapi_get_sense(op, &asc, &ascq);
- if (ret)
- // Error - retry.
- continue;
-
- // Sense succeeded.
- if (asc == 0x3a) { /* MEDIUM NOT PRESENT */
- dprintf(1, "Device reports MEDIUM NOT PRESENT\n");
- return -1;
- }
-
- if (asc == 0x04 && 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;
- }
- }
-
- 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];
dop.lba = 0x11;
dop.count = 1;
dop.buf_fl = MAKE_FLATPTR(GET_SEG(SS), buffer);
- ret = cdrom_read(&dop);
+ ret = cdb_read(&dop);
if (ret)
return 3;
// And we read the Boot Catalog
dop.lba = lba;
- ret = cdrom_read(&dop);
+ dop.count = 1;
+ ret = cdb_read(&dop);
if (ret)
return 7;
u8 media = buffer[0x21];
SET_EBDA2(ebda_seg, cdemu.media, media);
- SET_EBDA2(ebda_seg, cdemu.emulated_drive, ADJUST_GLOBAL_PTR(dop.drive_g));
+ SET_EBDA2(ebda_seg, cdemu.emulated_drive_gf, dop.drive_g);
u16 boot_segment = *(u16*)&buffer[0x22];
if (!boot_segment)
dop.lba = lba;
dop.count = DIV_ROUND_UP(nbsectors, 4);
dop.buf_fl = MAKE_FLATPTR(boot_segment, 0);
- ret = cdrom_read(&dop);
+ ret = cdb_read(&dop);
if (ret)
return 12;
}
// Emulation of a floppy/harddisk requested
- if (! CONFIG_CDROM_EMU || !cdemu_drive)
+ if (! CONFIG_CDROM_EMU || !cdemu_drive_gf)
return 13;
// Set emulated drive id and increase bios installed hardware
projects / seabios.git / blobdiff