// format disk track
static void
disk_1305(struct bregs *regs, struct drive_s *drive_g)
{
debug_stub(regs);
u16 nlc, nlh, nlspt;
fillLCHS(drive_g, &nlc, &nlh, &nlspt);
u8 num_sectors = regs->al;
u8 head = regs->dh;
if (head >= nlh || num_sectors == 0 || num_sectors > nlspt) {
disk_ret(regs, DISK_RET_EPARAM);
return;
}
struct disk_op_s dop;
dop.drive_g = drive_g;
dop.command = CMD_FORMAT;
dop.lba = head;
dop.count = num_sectors;
dop.buf_fl = MAKE_FLATPTR(regs->es, regs->bx);
int status = send_disk_op(&dop);
disk_ret(regs, status);
}
static void
handle_legacy_disk(struct bregs *regs, u8 extdrive)
{
if (! CONFIG_DRIVES) {
// XXX - support handle_1301 anyway?
disk_ret(regs, DISK_RET_EPARAM);
return;
}
if (extdrive < EXTSTART_HD) {
struct drive_s *drive_g = getDrive(EXTTYPE_FLOPPY, extdrive);
if (!drive_g)
goto fail;
floppy_13(regs, drive_g);
return;
}
struct drive_s *drive_g;
if (extdrive >= EXTSTART_CD)
drive_g = getDrive(EXTTYPE_CD, extdrive - EXTSTART_CD);
else
drive_g = getDrive(EXTTYPE_HD, extdrive - EXTSTART_HD);
if (!drive_g)
goto fail;
disk_13(regs, drive_g);
return;
fail:
// XXX - support 1301/1308/1315 anyway?
disk_ret(regs, DISK_RET_EPARAM);
}
// format disk track
static void noinline
disk_1305(struct bregs *regs, struct drive_s *drive_gf)
{
debug_stub(regs);
struct chs_s chs = getLCHS(drive_gf);
u16 nlc=chs.cylinder, nlh=chs.head, nls=chs.sector;
u8 count = regs->al;
u8 cylinder = regs->ch;
u8 head = regs->dh;
if (cylinder >= nlc || head >= nlh || count == 0 || count > nls) {
disk_ret(regs, DISK_RET_EPARAM);
return;
}
struct disk_op_s dop;
dop.drive_gf = drive_gf;
dop.command = CMD_FORMAT;
dop.lba = (((u32)cylinder * (u32)nlh) + (u32)head) * (u32)nls;
dop.count = count;
dop.buf_fl = MAKE_FLATPTR(regs->es, regs->bx);
int status = send_disk_op(&dop);
disk_ret(regs, status);
}
// Perform read/write/verify using new-style "int13ext" accesses.
static void noinline
extended_access(struct bregs *regs, struct drive_s *drive_g, u16 command)
{
struct disk_op_s dop;
// Get lba and check.
dop.lba = GET_INT13EXT(regs, lba);
dop.command = command;
dop.drive_g = drive_g;
if (dop.lba >= GET_GLOBAL(drive_g->sectors)) {
warn_invalid(regs);
disk_ret(regs, DISK_RET_EPARAM);
return;
}
dop.buf_fl = SEGOFF_TO_FLATPTR(GET_INT13EXT(regs, data));
dop.count = GET_INT13EXT(regs, count);
if (! dop.count) {
// Nothing to do.
disk_ret(regs, DISK_RET_SUCCESS);
return;
}
int status = send_disk_op(&dop);
SET_INT13EXT(regs, count, dop.count);
disk_ret(regs, status);
}
// IBM/MS eject media
static void
disk_1346(struct bregs *regs, struct drive_s *drive_g)
{
if (regs->dl < EXTSTART_CD) {
// Volume Not Removable
disk_ret(regs, DISK_RET_ENOTREMOVABLE);
return;
}
int cdid = regs->dl - EXTSTART_CD;
u8 locks = GET_EBDA(cdrom_locks[cdid]);
if (locks != 0) {
disk_ret(regs, DISK_RET_ELOCKED);
return;
}
// FIXME should handle 0x31 no media in device
// FIXME should handle 0xb5 valid request failed
// Call removable media eject
struct bregs br;
memset(&br, 0, sizeof(br));
br.ah = 0x52;
call16_int(0x15, &br);
if (br.ah || br.flags & F_CF) {
disk_ret(regs, DISK_RET_ELOCKED);
return;
}
disk_ret(regs, DISK_RET_SUCCESS);
}
// Perform read/write/verify using new-style "int13ext" accesses.
static void noinline
extended_access(struct bregs *regs, struct drive_s *drive_gf, u16 command)
{
struct disk_op_s dop;
struct int13ext_s *param_far = (struct int13ext_s*)(regs->si+0);
// Get lba and check.
dop.lba = GET_FARVAR(regs->ds, param_far->lba);
dop.command = command;
dop.drive_gf = drive_gf;
if (dop.lba >= GET_GLOBALFLAT(drive_gf->sectors)) {
warn_invalid(regs);
disk_ret(regs, DISK_RET_EPARAM);
return;
}
dop.buf_fl = SEGOFF_TO_FLATPTR(GET_FARVAR(regs->ds, param_far->data));
dop.count = GET_FARVAR(regs->ds, param_far->count);
if (! dop.count) {
// Nothing to do.
disk_ret(regs, DISK_RET_SUCCESS);
return;
}
int status = send_disk_op(&dop);
SET_FARVAR(regs->ds, param_far->count, dop.count);
disk_ret(regs, status);
}
static void
disk_1316(struct bregs *regs, struct drive_s *drive_g)
{
if (regs->dl >= EXTSTART_HD) {
// Hard drive
disk_ret(regs, DISK_RET_EPARAM);
return;
}
disk_ret(regs, DISK_RET_ECHANGED);
}
// read disk drive parameters
static void noinline
disk_1308(struct bregs *regs, struct drive_s *drive_g)
{
u16 ebda_seg = get_ebda_seg();
// Get logical geometry from table
u16 nlc, nlh, nlspt;
fillLCHS(drive_g, &nlc, &nlh, &nlspt);
nlc--;
nlh--;
u8 count;
if (regs->dl < EXTSTART_HD) {
// Floppy
count = GET_GLOBAL(FloppyCount);
if (CONFIG_CDROM_EMU
&& drive_g == GLOBALFLAT2GLOBAL(GET_GLOBAL(cdemu_drive_gf)))
regs->bx = GET_EBDA2(ebda_seg, cdemu.media) * 2;
else
regs->bx = GET_GLOBAL(drive_g->floppy_type);
// set es & di to point to 11 byte diskette param table in ROM
regs->es = SEG_BIOS;
regs->di = (u32)&diskette_param_table2;
} else if (regs->dl < EXTSTART_CD) {
// Hard drive
count = GET_BDA(hdcount);
nlc--; // last sector reserved
} else {
// Not supported on CDROM
disk_ret(regs, DISK_RET_EPARAM);
return;
}
if (CONFIG_CDROM_EMU && GET_EBDA2(ebda_seg, cdemu.active)) {
u8 emudrive = GET_EBDA2(ebda_seg, cdemu.emulated_extdrive);
if (((emudrive ^ regs->dl) & 0x80) == 0)
// Note extra drive due to emulation.
count++;
if (regs->dl < EXTSTART_HD && count > 2)
// Max of two floppy drives.
count = 2;
}
regs->al = 0;
regs->ch = nlc & 0xff;
regs->cl = ((nlc >> 2) & 0xc0) | (nlspt & 0x3f);
regs->dh = nlh;
disk_ret(regs, DISK_RET_SUCCESS);
regs->dl = count;
}
// lock
static void
disk_134500(struct bregs *regs, struct drive_s *drive_gf)
{
int cdid = regs->dl - EXTSTART_CD;
u8 locks = GET_LOW(CDRom_locks[cdid]);
if (locks == 0xff) {
regs->al = 1;
disk_ret(regs, DISK_RET_ETOOMANYLOCKS);
return;
}
SET_LOW(CDRom_locks[cdid], locks + 1);
regs->al = 1;
disk_ret(regs, DISK_RET_SUCCESS);
}
// lock
static void
disk_134500(struct bregs *regs, struct drive_s *drive_g)
{
u16 ebda_seg = get_ebda_seg();
int cdid = regs->dl - EXTSTART_CD;
u8 locks = GET_EBDA2(ebda_seg, cdrom_locks[cdid]);
if (locks == 0xff) {
regs->al = 1;
disk_ret(regs, DISK_RET_ETOOMANYLOCKS);
return;
}
SET_EBDA2(ebda_seg, cdrom_locks[cdid], locks + 1);
regs->al = 1;
disk_ret(regs, DISK_RET_SUCCESS);
}
// unlock
static void
disk_134501(struct bregs *regs, struct drive_s *drive_gf)
{
int cdid = regs->dl - EXTSTART_CD;
u8 locks = GET_LOW(CDRom_locks[cdid]);
if (locks == 0x00) {
regs->al = 0;
disk_ret(regs, DISK_RET_ENOTLOCKED);
return;
}
locks--;
SET_LOW(CDRom_locks[cdid], locks);
regs->al = (locks ? 1 : 0);
disk_ret(regs, DISK_RET_SUCCESS);
}
// ElTorito - Terminate disk emu
void
cdemu_134b(struct bregs *regs)
{
// FIXME ElTorito Hardcoded
SET_INT13ET(regs, size, 0x13);
SET_INT13ET(regs, media, GET_LOW(CDEmu.media));
SET_INT13ET(regs, emulated_drive, GET_LOW(CDEmu.emulated_extdrive));
struct drive_s *drive_gf = GET_LOW(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_LOW(CDEmu.ilba));
SET_INT13ET(regs, buffer_segment, GET_LOW(CDEmu.buffer_segment));
SET_INT13ET(regs, load_segment, GET_LOW(CDEmu.load_segment));
SET_INT13ET(regs, sector_count, GET_LOW(CDEmu.sector_count));
SET_INT13ET(regs, cylinders, GET_LOW(CDEmu.lchs.cylinders));
SET_INT13ET(regs, sectors, GET_LOW(CDEmu.lchs.spt));
SET_INT13ET(regs, heads, GET_LOW(CDEmu.lchs.heads));
// If we have to terminate emulation
if (regs->al == 0x00) {
// FIXME ElTorito Various. Should be handled accordingly to spec
SET_LOW(CDEmu.active, 0x00); // bye bye
// XXX - update floppy/hd count.
}
disk_ret(regs, DISK_RET_SUCCESS);
}
// unlock
static void
disk_134501(struct bregs *regs, struct drive_s *drive_g)
{
u16 ebda_seg = get_ebda_seg();
int cdid = regs->dl - EXTSTART_CD;
u8 locks = GET_EBDA2(ebda_seg, cdrom_locks[cdid]);
if (locks == 0x00) {
regs->al = 0;
disk_ret(regs, DISK_RET_ENOTLOCKED);
return;
}
locks--;
SET_EBDA2(ebda_seg, cdrom_locks[cdid], locks);
regs->al = (locks ? 1 : 0);
disk_ret(regs, DISK_RET_SUCCESS);
}
// IBM/MS installation check
static void
disk_1341(struct bregs *regs, struct drive_s *drive_g)
{
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
}
// status
static void
disk_134502(struct bregs *regs, struct drive_s *drive_g)
{
int cdid = regs->dl - EXTSTART_CD;
u8 locks = GET_EBDA(cdrom_locks[cdid]);
regs->al = (locks ? 1 : 0);
disk_ret(regs, DISK_RET_SUCCESS);
}
// disk controller reset
static void
disk_1300(struct bregs *regs, struct drive_s *drive_g)
{
struct disk_op_s dop;
dop.drive_g = drive_g;
dop.command = CMD_RESET;
int status = send_disk_op(&dop);
disk_ret(regs, status);
}
// Perform read/write/verify using old-style chs accesses
static void
basic_access(struct bregs *regs, struct drive_s *drive_g, u16 command)
{
struct disk_op_s dop;
dop.drive_g = drive_g;
dop.command = command;
u8 count = regs->al;
u16 cylinder = regs->ch | ((((u16)regs->cl) << 2) & 0x300);
u16 sector = regs->cl & 0x3f;
u16 head = regs->dh;
if (count > 128 || count == 0 || sector == 0) {
dprintf(1, "int13_harddisk: function %02x, parameter out of range!\n"
, regs->ah);
disk_ret(regs, DISK_RET_EPARAM);
return;
}
dop.count = count;
u16 nlc, nlh, nlspt;
fillLCHS(drive_g, &nlc, &nlh, &nlspt);
// sanity check on cyl heads, sec
if (cylinder >= nlc || head >= nlh || sector > nlspt) {
dprintf(1, "int13_harddisk: function %02x, parameters out of"
" range %04x/%04x/%04x!\n"
, regs->ah, cylinder, head, sector);
disk_ret(regs, DISK_RET_EPARAM);
return;
}
// translate lchs to lba
dop.lba = (((((u32)cylinder * (u32)nlh) + (u32)head) * (u32)nlspt)
+ (u32)sector - 1);
dop.buf_fl = MAKE_FLATPTR(regs->es, regs->bx);
int status = send_disk_op(&dop);
regs->al = dop.count;
disk_ret(regs, status);
}
// check drive ready
static void
disk_1310(struct bregs *regs, struct drive_s *drive_g)
{
// should look at 40:8E also???
struct disk_op_s dop;
dop.drive_g = drive_g;
dop.command = CMD_ISREADY;
int status = send_disk_op(&dop);
disk_ret(regs, status);
}
// Perform read/write/verify using old-style chs accesses
static void noinline
basic_access(struct bregs *regs, struct drive_s *drive_g, u16 command)
{
struct disk_op_s dop;
dop.drive_g = drive_g;
dop.command = command;
u8 count = regs->al;
u16 cylinder = regs->ch | ((((u16)regs->cl) << 2) & 0x300);
u16 sector = regs->cl & 0x3f;
u16 head = regs->dh;
if (count > 128 || count == 0 || sector == 0) {
warn_invalid(regs);
disk_ret(regs, DISK_RET_EPARAM);
return;
}
dop.count = count;
u16 nlc, nlh, nlspt;
fillLCHS(drive_g, &nlc, &nlh, &nlspt);
// sanity check on cyl heads, sec
if (cylinder >= nlc || head >= nlh || sector > nlspt) {
warn_invalid(regs);
disk_ret(regs, DISK_RET_EPARAM);
return;
}
// translate lchs to lba
dop.lba = (((((u32)cylinder * (u32)nlh) + (u32)head) * (u32)nlspt)
+ (u32)sector - 1);
dop.buf_fl = MAKE_FLATPTR(regs->es, regs->bx);
int status = send_disk_op(&dop);
regs->al = dop.count;
disk_ret(regs, status);
}
// IBM/MS extended media change
static void
disk_1349(struct bregs *regs, struct drive_s *drive_g)
{
if (regs->dl < EXTSTART_CD) {
// Always success for HD
disk_ret(regs, DISK_RET_SUCCESS);
return;
}
set_invalid(regs);
// always send changed ??
regs->ah = DISK_RET_ECHANGED;
}
// ElTorito - Terminate disk emu
static void
cdemu_134b(struct bregs *regs)
{
memcpy_far(regs->ds, (void*)(regs->si+0), SEG_LOW, &CDEmu, sizeof(CDEmu));
// If we have to terminate emulation
if (regs->al == 0x00) {
// FIXME ElTorito Various. Should be handled accordingly to spec
SET_LOW(CDEmu.media, 0x00); // bye bye
// XXX - update floppy/hd count.
}
disk_ret(regs, DISK_RET_SUCCESS);
}
// Perform read/write/verify using new-style "int13ext" accesses.
static void
extended_access(struct bregs *regs, struct drive_s *drive_g, u16 command)
{
struct disk_op_s dop;
// Get lba and check.
dop.lba = GET_INT13EXT(regs, lba);
dop.command = command;
dop.drive_g = drive_g;
if (dop.lba >= GET_GLOBAL(drive_g->sectors)) {
dprintf(1, "int13_harddisk: function %02x. LBA out of range\n"
, regs->ah);
disk_ret(regs, DISK_RET_EPARAM);
return;
}
dop.buf_fl = SEGOFF_TO_FLATPTR(GET_INT13EXT(regs, data));
dop.count = GET_INT13EXT(regs, count);
int status = send_disk_op(&dop);
SET_INT13EXT(regs, count, dop.count);
disk_ret(regs, status);
}
// IBM/MS lock/unlock drive
static void
disk_1345(struct bregs *regs, struct drive_s *drive_g)
{
if (regs->dl < EXTSTART_CD) {
// Always success for HD
disk_ret(regs, DISK_RET_SUCCESS);
return;
}
switch (regs->al) {
case 0x00: disk_134500(regs, drive_g); break;
case 0x01: disk_134501(regs, drive_g); break;
case 0x02: disk_134502(regs, drive_g); break;
default: disk_1345XX(regs, drive_g); break;
}
}
// read disk drive size
static void noinline
disk_1315(struct bregs *regs, struct drive_s *drive_gf)
{
disk_ret(regs, DISK_RET_SUCCESS);
if (regs->dl < EXTSTART_HD || regs->dl >= EXTSTART_CD) {
// Floppy or cdrom
regs->ah = 1;
return;
}
// Hard drive
// Get logical geometry from table
struct chs_s chs = getLCHS(drive_gf);
u16 nlc=chs.cylinder, nlh=chs.head, nls=chs.sector;
// Compute sector count seen by int13
u32 lba = (u32)(nlc - 1) * (u32)nlh * (u32)nls;
regs->cx = lba >> 16;
regs->dx = lba & 0xffff;
regs->ah = 3; // hard disk accessible
}
// read disk drive size
static void
disk_1315(struct bregs *regs, struct drive_s *drive_g)
{
disk_ret(regs, DISK_RET_SUCCESS);
if (regs->dl < EXTSTART_HD || regs->dl >= EXTSTART_CD) {
// Floppy or cdrom
regs->ah = 1;
return;
}
// Hard drive
// Get logical geometry from table
u16 nlc, nlh, nlspt;
fillLCHS(drive_g, &nlc, &nlh, &nlspt);
// Compute sector count seen by int13
u32 lba = (u32)(nlc - 1) * (u32)nlh * (u32)nlspt;
regs->cx = lba >> 16;
regs->dx = lba & 0xffff;
regs->ah = 3; // hard disk accessible
}
// IBM/MS get drive parameters
static void
disk_1348(struct bregs *regs, struct drive_s *drive_gf)
{
int ret = fill_edd(SEGOFF(regs->ds, regs->si), drive_gf);
disk_ret(regs, ret);
}
static void
disk_134eXX(struct bregs *regs, struct drive_s *drive_g)
{
disk_ret(regs, DISK_RET_EPARAM);
}
static void
disk_134e06(struct bregs *regs, struct drive_s *drive_g)
{
disk_ret(regs, DISK_RET_SUCCESS);
}
// IBM/MS get drive parameters
static void
disk_1348(struct bregs *regs, struct drive_s *drive_g)
{
u16 size = GET_INT13DPT(regs, size);
// Buffer is too small
if (size < 26) {
disk_ret(regs, DISK_RET_EPARAM);
return;
}
// EDD 1.x
u8 type = GET_GLOBAL(drive_g->type);
u16 npc = GET_GLOBAL(drive_g->pchs.cylinders);
u16 nph = GET_GLOBAL(drive_g->pchs.heads);
u16 npspt = GET_GLOBAL(drive_g->pchs.spt);
u64 lba = GET_GLOBAL(drive_g->sectors);
u16 blksize = GET_GLOBAL(drive_g->blksize);
dprintf(DEBUG_HDL_13, "disk_1348 size=%d t=%d chs=%d,%d,%d lba=%d bs=%d\n"
, size, type, npc, nph, npspt, (u32)lba, blksize);
SET_INT13DPT(regs, size, 26);
if (type == DTYPE_ATAPI) {
// 0x74 = removable, media change, lockable, max values
SET_INT13DPT(regs, infos, 0x74);
SET_INT13DPT(regs, cylinders, 0xffffffff);
SET_INT13DPT(regs, heads, 0xffffffff);
SET_INT13DPT(regs, spt, 0xffffffff);
SET_INT13DPT(regs, sector_count, (u64)-1);
} else {
if (lba > (u64)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_count, lba);
}
SET_INT13DPT(regs, blksize, blksize);
if (size < 30 || (type != DTYPE_ATA && type != DTYPE_ATAPI)) {
disk_ret(regs, DISK_RET_SUCCESS);
return;
}
// EDD 2.x
u16 ebda_seg = get_ebda_seg();
SET_INT13DPT(regs, size, 30);
SET_INT13DPT(regs, dpte_segment, ebda_seg);
SET_INT13DPT(regs, dpte_offset
, offsetof(struct extended_bios_data_area_s, dpte));
// Fill in dpte
u8 ataid = GET_GLOBAL(drive_g->cntl_id);
u8 channel = ataid / 2;
u8 slave = ataid % 2;
u16 iobase1 = GET_GLOBAL(ATA_channels[channel].iobase1);
u16 iobase2 = GET_GLOBAL(ATA_channels[channel].iobase2);
u8 irq = GET_GLOBAL(ATA_channels[channel].irq);
u16 options = 0;
if (type == DTYPE_ATA) {
u8 translation = GET_GLOBAL(drive_g->translation);
if (translation != TRANSLATION_NONE) {
options |= 1<<3; // CHS translation
if (translation == TRANSLATION_LBA)
options |= 1<<9;
if (translation == TRANSLATION_RECHS)
options |= 3<<9;
}
} else {
// ATAPI
options |= 1<<5; // removable device
options |= 1<<6; // atapi device
}
options |= 1<<4; // lba translation
if (CONFIG_ATA_PIO32)
options |= 1<<7;
SET_EBDA2(ebda_seg, dpte.iobase1, iobase1);
SET_EBDA2(ebda_seg, dpte.iobase2, iobase2 + ATA_CB_DC);
SET_EBDA2(ebda_seg, dpte.prefix, ((slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0)
| ATA_CB_DH_LBA));
SET_EBDA2(ebda_seg, dpte.unused, 0xcb);
SET_EBDA2(ebda_seg, dpte.irq, irq);
SET_EBDA2(ebda_seg, dpte.blkcount, 1);
SET_EBDA2(ebda_seg, dpte.dma, 0);
SET_EBDA2(ebda_seg, dpte.pio, 0);
SET_EBDA2(ebda_seg, dpte.options, options);
SET_EBDA2(ebda_seg, dpte.reserved, 0);
SET_EBDA2(ebda_seg, dpte.revision, 0x11);
u8 sum = checksum_far(
ebda_seg, (void*)offsetof(struct extended_bios_data_area_s, dpte), 15);
SET_EBDA2(ebda_seg, dpte.checksum, -sum);
if (size < 66) {
disk_ret(regs, DISK_RET_SUCCESS);
return;
}
// EDD 3.x
SET_INT13DPT(regs, key, 0xbedd);
SET_INT13DPT(regs, dpi_length, 36);
SET_INT13DPT(regs, reserved1, 0);
SET_INT13DPT(regs, reserved2, 0);
int bdf = GET_GLOBAL(ATA_channels[channel].pci_bdf);
if (bdf != -1) {
SET_INT13DPT(regs, host_bus[0], 'P');
SET_INT13DPT(regs, host_bus[1], 'C');
SET_INT13DPT(regs, host_bus[2], 'I');
SET_INT13DPT(regs, host_bus[3], 0);
u32 path = (pci_bdf_to_bus(bdf) | (pci_bdf_to_dev(bdf) << 8)
| (pci_bdf_to_fn(bdf) << 16));
SET_INT13DPT(regs, iface_path, path);
} else {
// 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);
SET_INT13DPT(regs, iface_path, iobase1);
}
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);
SET_INT13DPT(regs, iface_type[4], 0);
SET_INT13DPT(regs, iface_type[5], 0);
SET_INT13DPT(regs, iface_type[6], 0);
SET_INT13DPT(regs, iface_type[7], 0);
SET_INT13DPT(regs, device_path, slave);
SET_INT13DPT(regs, checksum
, -checksum_far(regs->ds, (void*)(regs->si+30), 35));
disk_ret(regs, DISK_RET_SUCCESS);
}
// IBM/MS get drive parameters
static void
disk_1348(struct bregs *regs, struct drive_s *drive_g)
{
u16 size = GET_INT13DPT(regs, size);
u16 t13 = size == 74;
// Buffer is too small
if (size < 26) {
disk_ret(regs, DISK_RET_EPARAM);
return;
}
// EDD 1.x
u8 type = GET_GLOBAL(drive_g->type);
u16 npc = GET_GLOBAL(drive_g->pchs.cylinders);
u16 nph = GET_GLOBAL(drive_g->pchs.heads);
u16 npspt = GET_GLOBAL(drive_g->pchs.spt);
u64 lba = GET_GLOBAL(drive_g->sectors);
u16 blksize = GET_GLOBAL(drive_g->blksize);
dprintf(DEBUG_HDL_13, "disk_1348 size=%d t=%d chs=%d,%d,%d lba=%d bs=%d\n"
, size, type, npc, nph, npspt, (u32)lba, blksize);
SET_INT13DPT(regs, size, 26);
if (type == DTYPE_ATAPI) {
// 0x74 = removable, media change, lockable, max values
SET_INT13DPT(regs, infos, 0x74);
SET_INT13DPT(regs, cylinders, 0xffffffff);
SET_INT13DPT(regs, heads, 0xffffffff);
SET_INT13DPT(regs, spt, 0xffffffff);
SET_INT13DPT(regs, sector_count, (u64)-1);
} else {
if (lba > (u64)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_count, lba);
}
SET_INT13DPT(regs, blksize, blksize);
if (size < 30 ||
(type != DTYPE_ATA && type != DTYPE_ATAPI &&
type != DTYPE_VIRTIO_BLK && type != DTYPE_VIRTIO_SCSI)) {
disk_ret(regs, DISK_RET_SUCCESS);
return;
}
// EDD 2.x
int bdf;
u16 iobase1 = 0;
u64 device_path = 0;
u8 channel = 0;
SET_INT13DPT(regs, size, 30);
if (type == DTYPE_ATA || type == DTYPE_ATAPI) {
u16 ebda_seg = get_ebda_seg();
SET_INT13DPT(regs, dpte_segment, ebda_seg);
SET_INT13DPT(regs, dpte_offset
, offsetof(struct extended_bios_data_area_s, dpte));
// Fill in dpte
struct atadrive_s *adrive_g = container_of(
drive_g, struct atadrive_s, drive);
struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf);
u8 slave = GET_GLOBAL(adrive_g->slave);
u16 iobase2 = GET_GLOBALFLAT(chan_gf->iobase2);
u8 irq = GET_GLOBALFLAT(chan_gf->irq);
iobase1 = GET_GLOBALFLAT(chan_gf->iobase1);
bdf = GET_GLOBALFLAT(chan_gf->pci_bdf);
device_path = slave;
channel = GET_GLOBALFLAT(chan_gf->chanid);
u16 options = 0;
if (type == DTYPE_ATA) {
u8 translation = GET_GLOBAL(drive_g->translation);
if (translation != TRANSLATION_NONE) {
options |= 1<<3; // CHS translation
if (translation == TRANSLATION_LBA)
options |= 1<<9;
if (translation == TRANSLATION_RECHS)
options |= 3<<9;
}
} else {
// ATAPI
options |= 1<<5; // removable device
options |= 1<<6; // atapi device
}
options |= 1<<4; // lba translation
if (CONFIG_ATA_PIO32)
options |= 1<<7;
SET_EBDA2(ebda_seg, dpte.iobase1, iobase1);
SET_EBDA2(ebda_seg, dpte.iobase2, iobase2 + ATA_CB_DC);
SET_EBDA2(ebda_seg, dpte.prefix, ((slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0)
| ATA_CB_DH_LBA));
SET_EBDA2(ebda_seg, dpte.unused, 0xcb);
SET_EBDA2(ebda_seg, dpte.irq, irq);
SET_EBDA2(ebda_seg, dpte.blkcount, 1);
SET_EBDA2(ebda_seg, dpte.dma, 0);
SET_EBDA2(ebda_seg, dpte.pio, 0);
SET_EBDA2(ebda_seg, dpte.options, options);
SET_EBDA2(ebda_seg, dpte.reserved, 0);
SET_EBDA2(ebda_seg, dpte.revision, 0x11);
u8 sum = checksum_far(
ebda_seg, (void*)offsetof(struct extended_bios_data_area_s, dpte), 15);
SET_EBDA2(ebda_seg, dpte.checksum, -sum);
} else {
