#include "util.h" // debug_enter
#include "ata.h" // ATA_*
+#define DEBUGF1(fmt, args...) bprintf(0, fmt , ##args)
+#define DEBUGF(fmt, args...)
+
/****************************************************************
* Helper functions
****************************************************************/
-static inline void
-disk_ret(struct bregs *regs, u8 code)
-{
- regs->ah = code;
- SET_BDA(disk_last_status, code);
- set_cf(regs, code);
-}
-
#define DISK_STUB(regs) do { \
struct bregs *__regs = (regs); \
debug_stub(__regs); \
disk_ret(__regs, DISK_RET_SUCCESS); \
} while (0)
-static u8
-checksum_seg(u16 seg, u16 offset, u32 len)
-{
- u32 i;
- u8 sum = 0;
- for (i=0; i<len; i++)
- sum += GET_FARVAR(seg, *(u8*)(offset+i));
- return sum;
-}
-
static void
basic_access(struct bregs *regs, u8 device, u16 command)
{
+ u8 type = GET_EBDA(ata.devices[device].type);
+ u16 nlc, nlh, nlspt;
+ if (type == ATA_TYPE_ATA) {
+ nlc = GET_EBDA(ata.devices[device].lchs.cylinders);
+ nlh = GET_EBDA(ata.devices[device].lchs.heads);
+ nlspt = GET_EBDA(ata.devices[device].lchs.spt);
+ } else {
+ // Must be cd emulation.
+ nlc = GET_EBDA(cdemu.vdevice.cylinders);
+ nlh = GET_EBDA(cdemu.vdevice.heads);
+ nlspt = GET_EBDA(cdemu.vdevice.spt);
+ }
+
u16 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)) {
+ if (count > 128 || count == 0 || sector == 0) {
BX_INFO("int13_harddisk: function %02x, parameter out of range!\n"
, regs->ah);
disk_ret(regs, DISK_RET_EPARAM);
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 )) {
+ if (cylinder >= nlc || head >= nlh || sector > nlspt) {
BX_INFO("int13_harddisk: function %02x, parameters out of"
" range %04x/%04x/%04x!\n"
, regs->ah, cylinder, head, sector);
return;
}
- 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
+ if (!command) {
+ // If verify or seek
+ disk_ret(regs, DISK_RET_SUCCESS);
+ return;
}
+ // translate lchs to lba
+ u32 lba = (((((u32)cylinder * (u32)nlh) + (u32)head) * (u32)nlspt)
+ + (u32)sector - 1);
+
u16 segment = regs->es;
u16 offset = regs->bx;
+ void *far_buffer = MAKE_FARPTR(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;
- }
+ irq_enable();
+
+ int status;
+ if (type == ATA_TYPE_ATA)
+ status = ata_cmd_data(device, command, lba, count, far_buffer);
+ else
+ status = cdrom_read_emu(device, lba, count, far_buffer);
+
+ irq_disable();
// Set nb of sector transferred
regs->al = 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);
}
disk_ret(regs, DISK_RET_SUCCESS);
extended_access(struct bregs *regs, u8 device, u16 command)
{
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);
return;
}
- u8 status;
- switch (command) {
- case ATA_CMD_READ_SECTORS:
- if (type == ATA_TYPE_ATA) {
- status = ata_cmd_data_in(device, ATA_CMD_READ_SECTORS
- , count, 0, 0, 0
- , lba, segment, offset);
- } else {
- u8 atacmd[12];
- memset(atacmd, 0, sizeof(atacmd));
- atacmd[0]=0x28; // READ command
- atacmd[7]=(count & 0xff00) >> 8; // Sectors
- atacmd[8]=(count & 0x00ff); // Sectors
- atacmd[2]=(lba & 0xff000000) >> 24; // LBA
- atacmd[3]=(lba & 0x00ff0000) >> 16;
- atacmd[4]=(lba & 0x0000ff00) >> 8;
- atacmd[5]=(lba & 0x000000ff);
-
- status = ata_cmd_packet(device, (u32)atacmd, sizeof(atacmd)
- , 0, count*2048L
- , ATA_DATA_IN, 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 (!command) {
// If verify or seek
disk_ret(regs, DISK_RET_SUCCESS);
return;
}
+ u16 segment = GET_INT13EXT(regs, segment);
+ u16 offset = GET_INT13EXT(regs, offset);
+ void *far_buffer = MAKE_FARPTR(segment, offset);
+
+ irq_enable();
+
+ u8 status;
+ if (type == ATA_TYPE_ATA)
+ status = ata_cmd_data(device, command, lba, count, far_buffer);
+ else
+ status = cdrom_read(device, lba, count, far_buffer);
+
+ irq_disable();
+
SET_INT13EXT(regs, count, GET_EBDA(ata.trsfsectors));
if (status != 0) {
static void
disk_1301(struct bregs *regs, u8 device)
{
- regs->ah = GET_BDA(disk_last_status);
- disk_ret(regs, DISK_RET_SUCCESS);
+ u8 v = GET_BDA(disk_last_status);
+ regs->ah = v;
+ set_cf(regs, v);
+ // XXX - clear disk_last_status?
}
// read disk sectors
regs->cx = lba >> 16;
regs->dx = lba & 0xffff;
- disk_ret(regs, 0);
+ disk_ret(regs, DISK_RET_SUCCESS);
regs->ah = 3; // hard disk accessible
}
SET_INT13DPT(regs, size, 0x1e);
- SET_INT13DPT(regs, dpte_segment, EBDA_SEG);
+ SET_INT13DPT(regs, dpte_segment, SEG_EBDA);
SET_INT13DPT(regs, dpte_offset
, offsetof(struct extended_bios_data_area_s, ata.dpte));
else
SET_EBDA(ata.dpte.revision, 0x10);
- u8 sum = checksum_seg(EBDA_SEG
- , offsetof(struct extended_bios_data_area_s, ata.dpte)
- , 15);
+ u8 *p = MAKE_FARPTR(SEG_EBDA
+ , offsetof(struct extended_bios_data_area_s, ata.dpte));
+ u8 sum = checksum(p, 15);
SET_EBDA(ata.dpte.checksum, ~sum);
if (size < 0x42) {
SET_INT13DPT(regs, device_path[2], 0);
SET_INT13DPT(regs, device_path[4], 0L);
- sum = checksum_seg(regs->ds, 30, 34);
+ sum = checksum(MAKE_FARPTR(regs->ds, 30), 34);
SET_INT13DPT(regs, checksum, ~sum);
}
static void
disk_134eXX(struct bregs *regs, u8 device)
{
- debug_stub(regs);
disk_ret(regs, DISK_RET_EPARAM);
}
}
}
-static void
+void
disk_13XX(struct bregs *regs, u8 device)
{
- debug_stub(regs);
disk_ret(regs, DISK_RET_EPARAM);
}
-static void
+void
disk_13(struct bregs *regs, u8 device)
{
//debug_stub(regs);
}
-/****************************************************************
- * CDROM functions
- ****************************************************************/
-
-// read disk drive size
-static void
-cdrom_1315(struct bregs *regs, u8 device)
-{
- disk_ret(regs, DISK_RET_EADDRNOTFOUND);
-}
-
-// lock
-static void
-cdrom_134500(struct bregs *regs, u8 device)
-{
- u8 locks = GET_EBDA(ata.devices[device].lock);
- if (locks == 0xff) {
- regs->al = 1;
- disk_ret(regs, DISK_RET_ETOOMANYLOCKS);
- return;
- }
- SET_EBDA(ata.devices[device].lock, locks + 1);
- regs->al = 1;
- disk_ret(regs, DISK_RET_SUCCESS);
-}
-
-// unlock
-static void
-cdrom_134501(struct bregs *regs, u8 device)
-{
- u8 locks = GET_EBDA(ata.devices[device].lock);
- if (locks == 0x00) {
- regs->al = 0;
- disk_ret(regs, DISK_RET_ENOTLOCKED);
- return;
- }
- locks--;
- SET_EBDA(ata.devices[device].lock, locks);
- regs->al = (locks ? 1 : 0);
- disk_ret(regs, DISK_RET_SUCCESS);
-}
-
-// status
-static void
-cdrom_134502(struct bregs *regs, u8 device)
-{
- u8 locks = GET_EBDA(ata.devices[device].lock);
- regs->al = (locks ? 1 : 0);
- disk_ret(regs, DISK_RET_SUCCESS);
-}
-
-static void
-cdrom_1345XX(struct bregs *regs, u8 device)
-{
- disk_ret(regs, DISK_RET_EPARAM);
-}
-
-// IBM/MS lock/unlock drive
-static void
-cdrom_1345(struct bregs *regs, u8 device)
-{
- 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;
- }
-}
-
-// IBM/MS eject media
-static void
-cdrom_1346(struct bregs *regs, u8 device)
-{
- u8 locks = GET_EBDA(ata.devices[device].lock);
- 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);
-}
-
-// IBM/MS extended media change
-static void
-cdrom_1349(struct bregs *regs, u8 device)
-{
- // always send changed ??
- regs->ah = DISK_RET_ECHANGED;
- set_cf(regs, 1);
-}
-
-static void
-cdrom_ok(struct bregs *regs, u8 device)
-{
- disk_ret(regs, DISK_RET_SUCCESS);
-}
-
-static void
-cdrom_wp(struct bregs *regs, u8 device)
-{
- disk_ret(regs, DISK_RET_EWRITEPROTECT);
-}
-
-void
-cdrom_13(struct bregs *regs, u8 device)
-{
- //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;
-
- // These functions are the same as for hard disks
- case 0x01: disk_1301(regs, device); break;
- case 0x41: disk_1341(regs, device); break;
- case 0x42: disk_1342(regs, device); break;
- case 0x44: disk_1344(regs, device); break;
- case 0x47: disk_1347(regs, device); break;
- case 0x48: disk_1348(regs, device); break;
- case 0x4e: disk_134e(regs, device); break;
-
- // all these functions return SUCCESS
- case 0x00: cdrom_ok(regs, device); break; // disk controller reset
- case 0x09: cdrom_ok(regs, device); break; // initialize drive parameters
- case 0x0c: cdrom_ok(regs, device); break; // seek to specified cylinder
- case 0x0d: cdrom_ok(regs, device); break; // alternate disk reset
- case 0x10: cdrom_ok(regs, device); break; // check drive ready
- case 0x11: cdrom_ok(regs, device); break; // recalibrate
- case 0x14: cdrom_ok(regs, device); break; // controller internal diagnostic
- case 0x16: cdrom_ok(regs, device); break; // detect disk change
-
- // all these functions return disk write-protected
- case 0x03: cdrom_wp(regs, device); break; // write disk sectors
- case 0x05: cdrom_wp(regs, device); break; // format disk track
- case 0x43: cdrom_wp(regs, device); break; // IBM/MS extended write
-
- default: disk_13XX(regs, device); break;
- }
-}
-
-
/****************************************************************
* Entry points
****************************************************************/
static u8
-get_device(struct bregs *regs, u8 drive)
+get_device(struct bregs *regs, u8 iscd, u8 drive)
{
// basic check : device has to be defined
if (drive >= CONFIG_MAX_ATA_DEVICES) {
}
// Get the ata channel
- u8 device = GET_EBDA(ata.hdidmap[drive]);
+ u8 device = GET_EBDA(ata.idmap[iscd][drive]);
// basic check : device has to be valid
if (device >= CONFIG_MAX_ATA_DEVICES) {
}
if (drive >= 0xe0) {
- u8 device = get_device(regs, drive - 0xe0);
+ u8 device = get_device(regs, 1, drive - 0xe0);
if (device >= CONFIG_MAX_ATA_DEVICES)
return;
cdrom_13(regs, device);
return;
}
- u8 device = get_device(regs, drive - 0x80);
+ u8 device = get_device(regs, 0, drive - 0x80);
if (device >= CONFIG_MAX_ATA_DEVICES)
return;
disk_13(regs, device);
}
-void VISIBLE
+void VISIBLE16
handle_40(struct bregs *regs)
{
debug_enter(regs);
handle_legacy_disk(regs, regs->dl);
- debug_exit(regs);
}
// INT 13h Fixed Disk Services Entry Point
-void VISIBLE
+void VISIBLE16
handle_13(struct bregs *regs)
{
//debug_enter(regs);
u8 drive = regs->dl;
- // XXX
-#if BX_ELTORITO_BOOT
- if (regs->ah >= 0x4a || regs->ah <= 0x4d) {
- int13_eltorito(regs);
- } else if (cdemu_isactive() && cdrom_emulated_drive()) {
- int13_cdemu(regs);
- } else
-#endif
- handle_legacy_disk(regs, drive);
- debug_exit(regs);
+
+ if (CONFIG_CDROM_EMU) {
+ if (regs->ah == 0x4b) {
+ cdemu_134b(regs);
+ return;
+ }
+ if (GET_EBDA(cdemu.active)) {
+ if (drive == GET_EBDA(cdemu.emulated_drive)) {
+ cdemu_13(regs);
+ return;
+ }
+ if (drive < 0xe0)
+ drive--;
+ }
+ }
+ handle_legacy_disk(regs, drive);
}
// record completion in BIOS task complete flag
-void VISIBLE
-handle_76(struct bregs *regs)
+void VISIBLE16
+handle_76()
{
- debug_isr(regs);
- SET_BDA(floppy_harddisk_info, 0xff);
+ debug_isr();
+ SET_BDA(disk_interrupt_flag, 0xff);
eoi_both_pics();
}
projects / seabios.git / blobdiff