set_cf(regs, code);
}
-// disk controller reset
-static void
-disk_1300(struct bregs *regs, u8 device)
-{
- ata_reset(device);
-}
+#define DISK_STUB(regs) do { \
+ struct bregs *__regs = (regs); \
+ debug_stub(__regs); \
+ disk_ret(__regs, DISK_RET_SUCCESS); \
+ } while (0)
-// read disk status
-static void
-disk_1301(struct bregs *regs, u8 device)
+static u8
+checksum_seg(u16 seg, u16 offset, u32 len)
{
- regs->ah = GET_BDA(disk_last_status);
- disk_ret(regs, DISK_RET_SUCCESS);
+ u32 i;
+ u8 sum = 0;
+ for (i=0; i<len; i++)
+ sum += GET_FARVAR(seg, *(u8*)(offset+i));
+ return sum;
}
-static int
-check_params(struct bregs *regs, u8 device)
+static void
+basic_access(struct bregs *regs, u8 device, u16 command)
{
u16 count = regs->al;
u16 cylinder = regs->ch | ((((u16) regs->cl) << 2) & 0x300);
BX_INFO("int13_harddisk: function %02x, parameter out of range!\n"
, regs->ah);
disk_ret(regs, DISK_RET_EPARAM);
- return -1;
+ return;
}
u16 nlc = GET_EBDA(ata.devices[device].lchs.cylinders);
u16 nlh = GET_EBDA(ata.devices[device].lchs.heads);
u16 nlspt = GET_EBDA(ata.devices[device].lchs.spt);
+ u16 nph = GET_EBDA(ata.devices[device].pchs.heads);
+ u16 npspt = GET_EBDA(ata.devices[device].pchs.spt);
// sanity check on cyl heads, sec
if ( (cylinder >= nlc) || (head >= nlh) || (sector > nlspt )) {
" range %04x/%04x/%04x!\n"
, regs->ah, cylinder, head, sector);
disk_ret(regs, DISK_RET_EPARAM);
- return -1;
- }
- return 0;
-}
-
-static void
-disk_1302(struct bregs *regs, u8 device)
-{
- int ret = check_params(regs, device);
- if (ret)
return;
- u16 count = regs->al;
- u16 cylinder = regs->ch | ((((u16) regs->cl) << 2) & 0x300);
- u16 sector = regs->cl & 0x3f;
- u16 head = regs->dh;
- u16 nph = GET_EBDA(ata.devices[device].pchs.heads);
- u16 npspt = GET_EBDA(ata.devices[device].pchs.spt);
-
- u16 nlh = GET_EBDA(ata.devices[device].lchs.heads);
- u16 nlspt = GET_EBDA(ata.devices[device].lchs.spt);
+ }
u32 lba = 0;
// if needed, translate lchs to lba, and execute command
u16 segment = regs->es;
u16 offset = regs->bx;
- u8 status = ata_cmd_data_in(device, ATA_CMD_READ_SECTORS
- , count, cylinder, head, sector
- , lba, segment, offset);
+ u8 status;
+ switch (command) {
+ case ATA_CMD_READ_SECTORS:
+ status = ata_cmd_data_in(device, ATA_CMD_READ_SECTORS
+ , count, cylinder, head, sector
+ , lba, segment, offset);
+ break;
+ case ATA_CMD_WRITE_SECTORS:
+ status = ata_cmd_data_out(device, ATA_CMD_WRITE_SECTORS
+ , count, cylinder, head, sector
+ , lba, segment, offset);
+ break;
+ default:
+ disk_ret(regs, DISK_RET_SUCCESS);
+ return;
+ }
// Set nb of sector transferred
regs->al = GET_EBDA(ata.trsfsectors);
}
static void
-disk_1303(struct bregs *regs, u8 device)
+extended_access(struct bregs *regs, u8 device, u16 command)
{
- int ret = check_params(regs, device);
- if (ret)
+ u16 count = GET_INT13EXT(regs, count);
+ u16 segment = GET_INT13EXT(regs, segment);
+ u16 offset = GET_INT13EXT(regs, offset);
+
+ // Can't use 64 bits lba
+ u32 lba = GET_INT13EXT(regs, lba2);
+ if (lba != 0L) {
+ BX_PANIC("int13_harddisk: function %02x. Can't use 64bits lba\n"
+ , regs->ah);
+ disk_ret(regs, DISK_RET_EPARAM);
return;
- u16 count = regs->al;
- u16 cylinder = regs->ch | ((((u16) regs->cl) << 2) & 0x300);
- u16 sector = regs->cl & 0x3f;
- u16 head = regs->dh;
- u16 nph = GET_EBDA(ata.devices[device].pchs.heads);
- u16 npspt = GET_EBDA(ata.devices[device].pchs.spt);
-
- u16 nlh = GET_EBDA(ata.devices[device].lchs.heads);
- u16 nlspt = GET_EBDA(ata.devices[device].lchs.spt);
-
- u32 lba = 0;
- // if needed, translate lchs to lba, and execute command
- if ( (nph != nlh) || (npspt != nlspt)) {
- lba = (((((u32)cylinder * (u32)nlh) + (u32)head) * (u32)nlspt)
- + (u32)sector - 1);
- sector = 0; // this forces the command to be lba
}
- u16 segment = regs->es;
- u16 offset = regs->bx;
+ // Get 32 bits lba and check
+ lba = GET_INT13EXT(regs, lba1);
+ if (lba >= GET_EBDA(ata.devices[device].sectors)) {
+ BX_INFO("int13_harddisk: function %02x. LBA out of range\n", regs->ah);
+ disk_ret(regs, DISK_RET_EPARAM);
+ return;
+ }
- u8 status = ata_cmd_data_out(device, ATA_CMD_READ_SECTORS
- , count, cylinder, head, sector
+ u8 status;
+ switch (command) {
+ case ATA_CMD_READ_SECTORS:
+ status = ata_cmd_data_in(device, ATA_CMD_READ_SECTORS
+ , count, 0, 0, 0
, lba, segment, offset);
+ break;
+ case ATA_CMD_WRITE_SECTORS:
+ status = ata_cmd_data_out(device, ATA_CMD_WRITE_SECTORS
+ , count, 0, 0, 0
+ , lba, segment, offset);
+ break;
+ default:
+ // If verify or seek
+ disk_ret(regs, DISK_RET_SUCCESS);
+ return;
+ }
- // Set nb of sector transferred
- regs->al = GET_EBDA(ata.trsfsectors);
+ SET_INT13EXT(regs, count, GET_EBDA(ata.trsfsectors));
if (status != 0) {
- BX_INFO("int13_harddisk: function %02x, error %02x !\n",regs->ah,status);
+ BX_INFO("int13_harddisk: function %02x, error %02x !\n"
+ , regs->ah, status);
disk_ret(regs, DISK_RET_EBADTRACK);
+ return;
}
disk_ret(regs, DISK_RET_SUCCESS);
}
+// disk controller reset
static void
-disk_1304(struct bregs *regs, u8 device)
+disk_1300(struct bregs *regs, u8 device)
{
- int ret = check_params(regs, device);
- if (ret)
- return;
- // FIXME verify
+ ata_reset(device);
+}
+
+// read disk status
+static void
+disk_1301(struct bregs *regs, u8 device)
+{
+ regs->ah = GET_BDA(disk_last_status);
disk_ret(regs, DISK_RET_SUCCESS);
}
-#define DISK_STUB(regs) do { \
- struct bregs *__regs = (regs); \
- debug_stub(__regs); \
- disk_ret(__regs, DISK_RET_SUCCESS); \
- } while (0)
+// read disk sectors
+static void
+disk_1302(struct bregs *regs, u8 device)
+{
+ basic_access(regs, device, ATA_CMD_READ_SECTORS);
+}
+
+// write disk sectors
+static void
+disk_1303(struct bregs *regs, u8 device)
+{
+ basic_access(regs, device, ATA_CMD_WRITE_SECTORS);
+}
+
+// verify disk sectors
+static void
+disk_1304(struct bregs *regs, u8 device)
+{
+ basic_access(regs, device, 0);
+ // FIXME verify
+}
// format disk track
static void
disk_ret(regs, DISK_RET_SUCCESS);
}
+// initialize drive parameters
+static void
+disk_1309(struct bregs *regs, u8 device)
+{
+ DISK_STUB(regs);
+}
+
+// seek to specified cylinder
+static void
+disk_130c(struct bregs *regs, u8 device)
+{
+ DISK_STUB(regs);
+}
+
+// alternate disk reset
+static void
+disk_130d(struct bregs *regs, u8 device)
+{
+ DISK_STUB(regs);
+}
+
// check drive ready
static void
disk_1310(struct bregs *regs, u8 device)
disk_ret(regs, DISK_RET_ENOTREADY);
}
+// recalibrate
+static void
+disk_1311(struct bregs *regs, u8 device)
+{
+ DISK_STUB(regs);
+}
+
+// controller internal diagnostic
+static void
+disk_1314(struct bregs *regs, u8 device)
+{
+ DISK_STUB(regs);
+}
+
// read disk drive size
static void
disk_1315(struct bregs *regs, u8 device)
regs->ah = 3; // hard disk accessible
}
+// IBM/MS installation check
static void
-disk_13XX(struct bregs *regs, u8 device)
+disk_1341(struct bregs *regs, u8 device)
{
- BX_INFO("int13_harddisk: function %xh unsupported, returns fail\n", regs->ah);
- disk_ret(regs, DISK_RET_EPARAM);
+ regs->bx = 0xaa55; // install check
+ regs->cx = 0x0007; // ext disk access and edd, removable supported
+ disk_ret(regs, DISK_RET_SUCCESS);
+ regs->ah = 0x30; // EDD 3.0
}
+// IBM/MS extended read
static void
-disk_13(struct bregs *regs, u8 drive)
+disk_1342(struct bregs *regs, u8 device)
{
- if (! CONFIG_ATA) {
- disk_13XX(regs, drive);
+ extended_access(regs, device, ATA_CMD_READ_SECTORS);
+}
+
+// IBM/MS extended write
+static void
+disk_1343(struct bregs *regs, u8 device)
+{
+ extended_access(regs, device, ATA_CMD_WRITE_SECTORS);
+}
+
+// IBM/MS verify
+static void
+disk_1344(struct bregs *regs, u8 device)
+{
+ extended_access(regs, device, 0);
+}
+
+// IBM/MS lock/unlock drive
+static void
+disk_1345(struct bregs *regs, u8 device)
+{
+ // Always success for HD
+ disk_ret(regs, DISK_RET_SUCCESS);
+}
+
+// IBM/MS eject media
+static void
+disk_1346(struct bregs *regs, u8 device)
+{
+ // Volume Not Removable
+ disk_ret(regs, DISK_RET_ENOTREMOVABLE);
+}
+
+// IBM/MS extended seek
+static void
+disk_1347(struct bregs *regs, u8 device)
+{
+ extended_access(regs, device, 0);
+}
+
+// IBM/MS get drive parameters
+static void
+disk_1348(struct bregs *regs, u8 device)
+{
+ u16 size = GET_INT13DPT(regs, size);
+
+ // Buffer is too small
+ if (size < 0x1a) {
+ disk_ret(regs, DISK_RET_EPARAM);
return;
}
- //debug_stub(regs);
-
- // clear completion flag
- SET_BDA(disk_interrupt_flag, 0);
+ // EDD 1.x
+
+ u16 npc = GET_EBDA(ata.devices[device].pchs.cylinders);
+ u16 nph = GET_EBDA(ata.devices[device].pchs.heads);
+ u16 npspt = GET_EBDA(ata.devices[device].pchs.spt);
+ u32 lba = GET_EBDA(ata.devices[device].sectors);
+ u16 blksize = GET_EBDA(ata.devices[device].blksize);
+
+ SET_INT13DPT(regs, size, 0x1a);
+ if ((lba/npspt)/nph > 0x3fff) {
+ SET_INT13DPT(regs, infos, 0x00); // geometry is invalid
+ SET_INT13DPT(regs, cylinders, 0x3fff);
+ } else {
+ SET_INT13DPT(regs, infos, 0x02); // geometry is valid
+ SET_INT13DPT(regs, cylinders, (u32)npc);
+ }
+ SET_INT13DPT(regs, heads, (u32)nph);
+ SET_INT13DPT(regs, spt, (u32)npspt);
+ SET_INT13DPT(regs, sector_count1, lba); // FIXME should be Bit64
+ SET_INT13DPT(regs, sector_count2, 0L);
+ SET_INT13DPT(regs, blksize, blksize);
- // basic check : device has to be defined
- if (drive < 0x80 || drive >= 0x80 + CONFIG_MAX_ATA_DEVICES) {
- disk_13XX(regs, drive);
+ if (size < 0x1e) {
+ disk_ret(regs, DISK_RET_SUCCESS);
return;
}
- // Get the ata channel
- u8 device = GET_EBDA(ata.hdidmap[drive-0x80]);
+ // EDD 2.x
+
+ SET_INT13DPT(regs, size, 0x1e);
+
+ SET_INT13DPT(regs, dpte_segment, EBDA_SEG);
+ SET_INT13DPT(regs, dpte_offset
+ , offsetof(struct extended_bios_data_area_s, ata.dpte));
+
+ // Fill in dpte
+ u8 channel = device / 2;
+ u16 iobase1 = GET_EBDA(ata.channels[channel].iobase1);
+ u16 iobase2 = GET_EBDA(ata.channels[channel].iobase2);
+ u8 irq = GET_EBDA(ata.channels[channel].irq);
+ u8 mode = GET_EBDA(ata.devices[device].mode);
+ u8 translation = GET_EBDA(ata.devices[device].translation);
+
+ u16 options = (translation==ATA_TRANSLATION_NONE?0:1)<<3; // chs translation
+ options |= (1<<4); // lba translation
+ options |= (mode==ATA_MODE_PIO32?1:0)<<7;
+ options |= (translation==ATA_TRANSLATION_LBA?1:0)<<9;
+ options |= (translation==ATA_TRANSLATION_RECHS?3:0)<<9;
+
+ SET_EBDA(ata.dpte.iobase1, iobase1);
+ SET_EBDA(ata.dpte.iobase2, iobase2 + ATA_CB_DC);
+ SET_EBDA(ata.dpte.prefix, (0xe | (device % 2))<<4 );
+ SET_EBDA(ata.dpte.unused, 0xcb );
+ SET_EBDA(ata.dpte.irq, irq );
+ SET_EBDA(ata.dpte.blkcount, 1 );
+ SET_EBDA(ata.dpte.dma, 0 );
+ SET_EBDA(ata.dpte.pio, 0 );
+ SET_EBDA(ata.dpte.options, options);
+ SET_EBDA(ata.dpte.reserved, 0);
+ if (size >= 0x42)
+ SET_EBDA(ata.dpte.revision, 0x11);
+ else
+ SET_EBDA(ata.dpte.revision, 0x10);
- // basic check : device has to be valid
- if (device >= CONFIG_MAX_ATA_DEVICES) {
- disk_13XX(regs, drive);
+ u8 sum = checksum_seg(EBDA_SEG
+ , offsetof(struct extended_bios_data_area_s, ata.dpte)
+ , 15);
+ SET_EBDA(ata.dpte.checksum, ~sum);
+
+ if (size < 0x42) {
+ disk_ret(regs, DISK_RET_SUCCESS);
return;
}
+ // EDD 3.x
+ channel = device / 2;
+ u8 iface = GET_EBDA(ata.channels[channel].iface);
+ iobase1 = GET_EBDA(ata.channels[channel].iobase1);
+
+ SET_INT13DPT(regs, size, 0x42);
+ SET_INT13DPT(regs, key, 0xbedd);
+ SET_INT13DPT(regs, dpi_length, 0x24);
+ SET_INT13DPT(regs, reserved1, 0);
+ SET_INT13DPT(regs, reserved2, 0);
+
+ if (iface==ATA_IFACE_ISA) {
+ SET_INT13DPT(regs, host_bus[0], 'I');
+ SET_INT13DPT(regs, host_bus[1], 'S');
+ SET_INT13DPT(regs, host_bus[2], 'A');
+ SET_INT13DPT(regs, host_bus[3], 0);
+ } else {
+ // FIXME PCI
+ }
+ SET_INT13DPT(regs, iface_type[0], 'A');
+ SET_INT13DPT(regs, iface_type[1], 'T');
+ SET_INT13DPT(regs, iface_type[2], 'A');
+ SET_INT13DPT(regs, iface_type[3], 0);
+
+ if (iface==ATA_IFACE_ISA) {
+ SET_INT13DPT(regs, iface_path[0], iobase1);
+ SET_INT13DPT(regs, iface_path[2], 0);
+ SET_INT13DPT(regs, iface_path[4], 0L);
+ } else {
+ // FIXME PCI
+ }
+ SET_INT13DPT(regs, device_path[0], device%2);
+ SET_INT13DPT(regs, device_path[1], 0);
+ SET_INT13DPT(regs, device_path[2], 0);
+ SET_INT13DPT(regs, device_path[4], 0L);
+
+ sum = checksum_seg(regs->ds, 30, 34);
+ SET_INT13DPT(regs, checksum, ~sum);
+}
+
+// IBM/MS extended media change
+static void
+disk_1349(struct bregs *regs, u8 device)
+{
+ // Always success for HD
+ disk_ret(regs, DISK_RET_SUCCESS);
+}
+
+static void
+disk_134e01(struct bregs *regs, u8 device)
+{
+ disk_ret(regs, DISK_RET_SUCCESS);
+}
+
+static void
+disk_134e03(struct bregs *regs, u8 device)
+{
+ disk_ret(regs, DISK_RET_SUCCESS);
+}
+
+static void
+disk_134e04(struct bregs *regs, u8 device)
+{
+ disk_ret(regs, DISK_RET_SUCCESS);
+}
+
+static void
+disk_134e06(struct bregs *regs, u8 device)
+{
+ disk_ret(regs, DISK_RET_SUCCESS);
+}
+
+static void
+disk_134eXX(struct bregs *regs, u8 device)
+{
+ debug_stub(regs);
+ disk_ret(regs, DISK_RET_EPARAM);
+}
+
+// IBM/MS set hardware configuration
+static void
+disk_134e(struct bregs *regs, u8 device)
+{
+ switch (regs->al) {
+ case 0x01: disk_134e01(regs, device); break;
+ case 0x03: disk_134e03(regs, device); break;
+ case 0x04: disk_134e04(regs, device); break;
+ case 0x06: disk_134e06(regs, device); break;
+ default: disk_134eXX(regs, device); break;
+ }
+}
+
+static void
+disk_13XX(struct bregs *regs, u8 device)
+{
+ debug_stub(regs);
+ disk_ret(regs, DISK_RET_EPARAM);
+}
+
+static void
+disk_13(struct bregs *regs, u8 device)
+{
+ //debug_stub(regs);
+
+ // clear completion flag
+ SET_BDA(disk_interrupt_flag, 0);
+
switch (regs->ah) {
case 0x00: disk_1300(regs, device); break;
case 0x01: disk_1301(regs, device); break;
case 0x04: disk_1304(regs, device); break;
case 0x05: disk_1305(regs, device); break;
case 0x08: disk_1308(regs, device); break;
+ case 0x09: disk_1309(regs, device); break;
+ case 0x0c: disk_130c(regs, device); break;
+ case 0x0d: disk_130d(regs, device); break;
case 0x10: disk_1310(regs, device); break;
+ case 0x11: disk_1311(regs, device); break;
+ case 0x14: disk_1314(regs, device); break;
case 0x15: disk_1315(regs, device); break;
- // XXX - several others defined
+ case 0x41: disk_1341(regs, device); break;
+ case 0x42: disk_1342(regs, device); break;
+ case 0x43: disk_1343(regs, device); break;
+ case 0x44: disk_1344(regs, device); break;
+ case 0x45: disk_1345(regs, device); break;
+ case 0x46: disk_1346(regs, device); break;
+ case 0x47: disk_1347(regs, device); break;
+ case 0x48: disk_1348(regs, device); break;
+ case 0x49: disk_1349(regs, device); break;
+ case 0x4e: disk_134e(regs, device); break;
default: disk_13XX(regs, device); break;
}
}
+static void
+cdrom_13(struct bregs *regs, u8 device)
+{
+ // XXX
+ disk_13XX(regs, device);
+}
+
+static u8
+get_device(struct bregs *regs, u8 drive)
+{
+ // basic check : device has to be defined
+ if (drive >= CONFIG_MAX_ATA_DEVICES) {
+ disk_ret(regs, DISK_RET_EPARAM);
+ return CONFIG_MAX_ATA_DEVICES;
+ }
+
+ // Get the ata channel
+ u8 device = GET_EBDA(ata.hdidmap[drive]);
+
+ // basic check : device has to be valid
+ if (device >= CONFIG_MAX_ATA_DEVICES) {
+ disk_ret(regs, DISK_RET_EPARAM);
+ return CONFIG_MAX_ATA_DEVICES;
+ }
+
+ return device;
+}
+
static void
handle_legacy_disk(struct bregs *regs, u8 drive)
{
floppy_13(regs, drive);
return;
}
-#if BX_USE_ATADRV
- if (drive >= 0xE0) {
- int13_cdrom(regs); // xxx
+
+ if (! CONFIG_ATA) {
+ // XXX - old code had other disk access method.
+ disk_ret(regs, DISK_RET_EPARAM);
return;
}
-#endif
- disk_13(regs, drive);
+ if (drive >= 0xe0) {
+ u8 device = get_device(regs, drive - 0xe0);
+ if (device >= CONFIG_MAX_ATA_DEVICES)
+ return;
+ cdrom_13(regs, device);
+ return;
+ }
+
+ u8 device = get_device(regs, drive - 0x80);
+ if (device >= CONFIG_MAX_ATA_DEVICES)
+ return;
+ disk_13(regs, device);
}
void VISIBLE
projects / seabios.git / commitdiff