// 16bit code to access cdrom drives.
//
-// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
+// Copyright (C) 2008,2009 Kevin O'Connor <kevin@koconnor.net>
// Copyright (C) 2002 MandrakeSoft S.A.
//
// This file may be distributed under the terms of the GNU LGPLv3 license.
#include "util.h" // memset
#include "bregs.h" // struct bregs
#include "biosvar.h" // GET_EBDA
-#include "atabits.h" // ATA_TYPE_ATAPI
+#include "ata.h" // ATA_CMD_REQUEST_SENSE
/****************************************************************
// read disk drive size
static void
-cdrom_1315(struct bregs *regs, u8 device)
+cdrom_1315(struct bregs *regs, u8 driveid)
{
disk_ret(regs, DISK_RET_EADDRNOTFOUND);
}
// lock
static void
-cdrom_134500(struct bregs *regs, u8 device)
+cdrom_134500(struct bregs *regs, u8 driveid)
{
u16 ebda_seg = get_ebda_seg();
- u8 locks = GET_EBDA2(ebda_seg, cdrom_locks[device]);
+ u8 locks = GET_EBDA2(ebda_seg, cdrom_locks[driveid]);
if (locks == 0xff) {
regs->al = 1;
disk_ret(regs, DISK_RET_ETOOMANYLOCKS);
return;
}
- SET_EBDA2(ebda_seg, cdrom_locks[device], locks + 1);
+ SET_EBDA2(ebda_seg, cdrom_locks[driveid], locks + 1);
regs->al = 1;
disk_ret(regs, DISK_RET_SUCCESS);
}
// unlock
static void
-cdrom_134501(struct bregs *regs, u8 device)
+cdrom_134501(struct bregs *regs, u8 driveid)
{
u16 ebda_seg = get_ebda_seg();
- u8 locks = GET_EBDA2(ebda_seg, cdrom_locks[device]);
+ u8 locks = GET_EBDA2(ebda_seg, cdrom_locks[driveid]);
if (locks == 0x00) {
regs->al = 0;
disk_ret(regs, DISK_RET_ENOTLOCKED);
return;
}
locks--;
- SET_EBDA2(ebda_seg, cdrom_locks[device], locks);
+ SET_EBDA2(ebda_seg, cdrom_locks[driveid], locks);
regs->al = (locks ? 1 : 0);
disk_ret(regs, DISK_RET_SUCCESS);
}
// status
static void
-cdrom_134502(struct bregs *regs, u8 device)
+cdrom_134502(struct bregs *regs, u8 driveid)
{
- u8 locks = GET_EBDA(cdrom_locks[device]);
+ u8 locks = GET_EBDA(cdrom_locks[driveid]);
regs->al = (locks ? 1 : 0);
disk_ret(regs, DISK_RET_SUCCESS);
}
static void
-cdrom_1345XX(struct bregs *regs, u8 device)
+cdrom_1345XX(struct bregs *regs, u8 driveid)
{
disk_ret(regs, DISK_RET_EPARAM);
}
// IBM/MS lock/unlock drive
static void
-cdrom_1345(struct bregs *regs, u8 device)
+cdrom_1345(struct bregs *regs, u8 driveid)
{
switch (regs->al) {
- case 0x00: cdrom_134500(regs, device); break;
- case 0x01: cdrom_134501(regs, device); break;
- case 0x02: cdrom_134502(regs, device); break;
- default: cdrom_1345XX(regs, device); break;
+ case 0x00: cdrom_134500(regs, driveid); break;
+ case 0x01: cdrom_134501(regs, driveid); break;
+ case 0x02: cdrom_134502(regs, driveid); break;
+ default: cdrom_1345XX(regs, driveid); break;
}
}
// IBM/MS eject media
static void
-cdrom_1346(struct bregs *regs, u8 device)
+cdrom_1346(struct bregs *regs, u8 driveid)
{
- u8 locks = GET_EBDA(cdrom_locks[device]);
+ u8 locks = GET_EBDA(cdrom_locks[driveid]);
if (locks != 0) {
disk_ret(regs, DISK_RET_ELOCKED);
return;
// IBM/MS extended media change
static void
-cdrom_1349(struct bregs *regs, u8 device)
+cdrom_1349(struct bregs *regs, u8 driveid)
{
set_fail(regs);
// always send changed ??
}
static void
-cdrom_ok(struct bregs *regs, u8 device)
+cdrom_ok(struct bregs *regs, u8 driveid)
{
disk_ret(regs, DISK_RET_SUCCESS);
}
static void
-cdrom_wp(struct bregs *regs, u8 device)
+cdrom_wp(struct bregs *regs, u8 driveid)
{
disk_ret(regs, DISK_RET_EWRITEPROTECT);
}
void
-cdrom_13(struct bregs *regs, u8 device)
+cdrom_13(struct bregs *regs, u8 driveid)
{
//debug_stub(regs);
switch (regs->ah) {
- case 0x15: cdrom_1315(regs, device); break;
- case 0x45: cdrom_1345(regs, device); break;
- case 0x46: cdrom_1346(regs, device); break;
- case 0x49: cdrom_1349(regs, device); break;
+ case 0x15: cdrom_1315(regs, driveid); break;
+ case 0x45: cdrom_1345(regs, driveid); break;
+ case 0x46: cdrom_1346(regs, driveid); break;
+ case 0x49: cdrom_1349(regs, driveid); break;
// These functions are the same as for hard disks
case 0x01:
case 0x47:
case 0x48:
case 0x4e:
- disk_13(regs, device);
+ disk_13(regs, driveid);
break;
// all these functions return SUCCESS
case 0x11: // recalibrate
case 0x14: // controller internal diagnostic
case 0x16: // detect disk change
- cdrom_ok(regs, device);
+ cdrom_ok(regs, driveid);
break;
// all these functions return disk write-protected
case 0x03: // write disk sectors
case 0x05: // format disk track
case 0x43: // IBM/MS extended write
- cdrom_wp(regs, device);
+ cdrom_wp(regs, driveid);
break;
- default: disk_13XX(regs, device); break;
+ default: disk_13XX(regs, driveid); break;
}
}
* CD emulation
****************************************************************/
+static void
+cdemu_1302(struct bregs *regs, u8 driveid)
+{
+ cdemu_access(regs, driveid, CMD_READ);
+}
+
+static void
+cdemu_1304(struct bregs *regs, u8 driveid)
+{
+ cdemu_access(regs, driveid, CMD_VERIFY);
+}
+
// read disk drive parameters
static void
-cdemu_1308(struct bregs *regs, u8 device)
+cdemu_1308(struct bregs *regs, u8 driveid)
{
u16 ebda_seg = get_ebda_seg();
- u16 nlc = GET_EBDA2(ebda_seg, cdemu.cylinders) - 1;
- u16 nlh = GET_EBDA2(ebda_seg, cdemu.heads) - 1;
- u16 nlspt = GET_EBDA2(ebda_seg, cdemu.spt);
+ u16 nlc = GET_EBDA2(ebda_seg, cdemu.lchs.cylinders) - 1;
+ u16 nlh = GET_EBDA2(ebda_seg, cdemu.lchs.heads) - 1;
+ u16 nlspt = GET_EBDA2(ebda_seg, cdemu.lchs.spt);
regs->al = 0x00;
regs->bl = 0x00;
//debug_stub(regs);
u16 ebda_seg = get_ebda_seg();
- u8 device = GET_EBDA2(ebda_seg, cdemu.controller_index) * 2;
- device += GET_EBDA2(ebda_seg, cdemu.device_spec);
+ u8 driveid = GET_EBDA2(ebda_seg, cdemu.emulated_driveid);
switch (regs->ah) {
- // These functions are the same as for hard disks
- case 0x02:
- case 0x04:
- disk_13(regs, device);
- break;
+ case 0x02: cdemu_1302(regs, driveid); break;
+ case 0x04: cdemu_1304(regs, driveid); break;
+ case 0x08: cdemu_1308(regs, driveid); break;
// These functions are the same as standard CDROM.
case 0x00:
case 0x14:
case 0x15:
case 0x16:
- cdrom_13(regs, device);
+ cdrom_13(regs, driveid);
break;
- case 0x08: cdemu_1308(regs, device); break;
-
- default: disk_13XX(regs, device); break;
+ default: disk_13XX(regs, driveid); break;
}
}
u16 ebda_seg = get_ebda_seg();
SET_INT13ET(regs, size, 0x13);
SET_INT13ET(regs, media, GET_EBDA2(ebda_seg, cdemu.media));
- SET_INT13ET(regs, emulated_drive, GET_EBDA2(ebda_seg, cdemu.emulated_drive));
- SET_INT13ET(regs, controller_index
- , GET_EBDA2(ebda_seg, cdemu.controller_index));
+ SET_INT13ET(regs, emulated_drive
+ , GET_EBDA2(ebda_seg, cdemu.emulated_extdrive));
+ u8 driveid = GET_EBDA2(ebda_seg, cdemu.emulated_driveid);
+ u8 cntl_id = GET_GLOBAL(Drives.drives[driveid].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));
- SET_INT13ET(regs, device_spec, GET_EBDA2(ebda_seg, cdemu.device_spec));
SET_INT13ET(regs, buffer_segment, GET_EBDA2(ebda_seg, cdemu.buffer_segment));
SET_INT13ET(regs, load_segment, GET_EBDA2(ebda_seg, cdemu.load_segment));
SET_INT13ET(regs, sector_count, GET_EBDA2(ebda_seg, cdemu.sector_count));
- SET_INT13ET(regs, cylinders, GET_EBDA2(ebda_seg, cdemu.cylinders));
- SET_INT13ET(regs, sectors, GET_EBDA2(ebda_seg, cdemu.spt));
- SET_INT13ET(regs, heads, GET_EBDA2(ebda_seg, cdemu.heads));
+ SET_INT13ET(regs, cylinders, GET_EBDA2(ebda_seg, cdemu.lchs.cylinders));
+ SET_INT13ET(regs, sectors, GET_EBDA2(ebda_seg, cdemu.lchs.spt));
+ SET_INT13ET(regs, heads, GET_EBDA2(ebda_seg, cdemu.lchs.heads));
// If we have to terminate emulation
if (regs->al == 0x00) {
// Request SENSE
static int
-atapi_get_sense(int device, u8 *asc, u8 *ascq)
+atapi_get_sense(int driveid, u8 *asc, u8 *ascq)
{
u8 atacmd[12], buffer[18];
memset(atacmd, 0, sizeof(atacmd));
atacmd[0] = ATA_CMD_REQUEST_SENSE;
atacmd[4] = sizeof(buffer);
- int ret = ata_cmd_packet(device, atacmd, sizeof(atacmd), sizeof(buffer)
+ int ret = ata_cmd_packet(driveid, atacmd, sizeof(atacmd), sizeof(buffer)
, MAKE_FLATPTR(GET_SEG(SS), buffer));
if (ret)
return ret;
// Request capacity
static int
-atapi_read_capacity(int device, u32 *blksize, u32 *sectors)
+atapi_read_capacity(int driveid, u32 *blksize, u32 *sectors)
{
u8 packet[12], buf[8];
memset(packet, 0, sizeof(packet));
packet[0] = 0x25; /* READ CAPACITY */
- int ret = ata_cmd_packet(device, packet, sizeof(packet), sizeof(buf)
+ int ret = ata_cmd_packet(driveid, packet, sizeof(packet), sizeof(buf)
, MAKE_FLATPTR(GET_SEG(SS), buf));
if (ret)
return ret;
}
static int
-atapi_is_ready(u16 device)
+atapi_is_ready(u16 driveid)
{
- dprintf(6, "atapi_is_ready (device=%d)\n", device);
+ dprintf(6, "atapi_is_ready (driveid=%d)\n", driveid);
/* Retry READ CAPACITY for 5 seconds unless MEDIUM NOT PRESENT is
* reported by the device. If the device reports "IN PROGRESS",
return -1;
}
- int ret = atapi_read_capacity(device, &blksize, §ors);
+ int ret = atapi_read_capacity(driveid, &blksize, §ors);
if (!ret)
// Success
break;
u8 asc, ascq;
- ret = atapi_get_sense(device, &asc, &ascq);
+ ret = atapi_get_sense(driveid, &asc, &ascq);
if (ret)
// Error - retry.
continue;
}
}
- if (blksize != GET_GLOBAL(ATA.devices[device].blksize)) {
+ if (blksize != GET_GLOBAL(Drives.drives[driveid].blksize)) {
printf("Unsupported sector size %u\n", blksize);
return -1;
}
cdrom_boot(int cdid)
{
// Verify device is a cdrom.
- if (cdid >= ATA.cdcount)
+ if (cdid >= Drives.cdcount)
return 1;
- int driveid = GET_GLOBAL(ATA.idmap[1][cdid]);
- if (GET_GLOBAL(ATA.devices[driveid].device) != ATA_DEVICE_CDROM)
- return 2;
+ int driveid = GET_GLOBAL(Drives.idmap[1][cdid]);
int ret = atapi_is_ready(driveid);
if (ret)
// Read the Boot Record Volume Descriptor
u8 buffer[2048];
struct disk_op_s dop;
+ memset(&dop, 0, sizeof(dop));
dop.driveid = driveid;
dop.lba = 0x11;
dop.count = 1;
u8 media = buffer[0x21];
SET_EBDA2(ebda_seg, cdemu.media, media);
- SET_EBDA2(ebda_seg, cdemu.controller_index, driveid/2);
- SET_EBDA2(ebda_seg, cdemu.device_spec, driveid%2);
+ SET_EBDA2(ebda_seg, cdemu.emulated_driveid, driveid);
u16 boot_segment = *(u16*)&buffer[0x22];
if (!boot_segment)
if (media == 0) {
// No emulation requested - return success.
- SET_EBDA2(ebda_seg, cdemu.emulated_drive, 0xE0 + cdid);
+ SET_EBDA2(ebda_seg, cdemu.emulated_extdrive, 0xE0 + cdid);
return 0;
}
// number of devices
if (media < 4) {
// Floppy emulation
- SET_EBDA2(ebda_seg, cdemu.emulated_drive, 0x00);
+ SET_EBDA2(ebda_seg, cdemu.emulated_extdrive, 0x00);
SETBITS_BDA(equipment_list_flags, 0x41);
switch (media) {
case 0x01: // 1.2M floppy
- SET_EBDA2(ebda_seg, cdemu.spt, 15);
- SET_EBDA2(ebda_seg, cdemu.cylinders, 80);
- SET_EBDA2(ebda_seg, cdemu.heads, 2);
+ SET_EBDA2(ebda_seg, cdemu.lchs.spt, 15);
+ SET_EBDA2(ebda_seg, cdemu.lchs.cylinders, 80);
+ SET_EBDA2(ebda_seg, cdemu.lchs.heads, 2);
break;
case 0x02: // 1.44M floppy
- SET_EBDA2(ebda_seg, cdemu.spt, 18);
- SET_EBDA2(ebda_seg, cdemu.cylinders, 80);
- SET_EBDA2(ebda_seg, cdemu.heads, 2);
+ SET_EBDA2(ebda_seg, cdemu.lchs.spt, 18);
+ SET_EBDA2(ebda_seg, cdemu.lchs.cylinders, 80);
+ SET_EBDA2(ebda_seg, cdemu.lchs.heads, 2);
break;
case 0x03: // 2.88M floppy
- SET_EBDA2(ebda_seg, cdemu.spt, 36);
- SET_EBDA2(ebda_seg, cdemu.cylinders, 80);
- SET_EBDA2(ebda_seg, cdemu.heads, 2);
+ SET_EBDA2(ebda_seg, cdemu.lchs.spt, 36);
+ SET_EBDA2(ebda_seg, cdemu.lchs.cylinders, 80);
+ SET_EBDA2(ebda_seg, cdemu.lchs.heads, 2);
break;
}
} else {
// Harddrive emulation
- SET_EBDA2(ebda_seg, cdemu.emulated_drive, 0x80);
+ SET_EBDA2(ebda_seg, cdemu.emulated_extdrive, 0x80);
SET_BDA(hdcount, GET_BDA(hdcount) + 1);
// Peak at partition table to get chs.
u8 cyllow = GET_FARVAR(boot_segment, mbr->partitions[0].last.cyllow);
u8 heads = GET_FARVAR(boot_segment, mbr->partitions[0].last.heads);
- SET_EBDA2(ebda_seg, cdemu.spt, sptcyl & 0x3f);
- SET_EBDA2(ebda_seg, cdemu.cylinders, ((sptcyl<<2)&0x300) + cyllow + 1);
- SET_EBDA2(ebda_seg, cdemu.heads, heads + 1);
+ SET_EBDA2(ebda_seg, cdemu.lchs.spt, sptcyl & 0x3f);
+ SET_EBDA2(ebda_seg, cdemu.lchs.cylinders
+ , ((sptcyl<<2)&0x300) + cyllow + 1);
+ SET_EBDA2(ebda_seg, cdemu.lchs.heads, heads + 1);
}
// everything is ok, so from now on, the emulation is active
projects / seabios.git / blobdiff