// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
// Copyright (C) 2002 MandrakeSoft S.A.
//
-// This file may be distributed under the terms of the GNU GPLv3 license.
+// This file may be distributed under the terms of the GNU LGPLv3 license.
#include "disk.h" // floppy_13
#include "biosvar.h" // SET_BDA
#include "config.h" // CONFIG_*
#include "util.h" // debug_enter
-#include "ata.h" // ATA_*
#include "pic.h" // eoi_pic2
#include "bregs.h" // struct bregs
#include "pci.h" // pci_bdf_to_bus
+#include "atabits.h" // ATA_CB_STAT
/****************************************************************
****************************************************************/
void
-__disk_ret(const char *fname, int lineno, struct bregs *regs, u8 code)
+__disk_ret(struct bregs *regs, u32 linecode, const char *fname)
{
+ u8 code = linecode;
SET_BDA(disk_last_status, code);
if (code)
- __set_code_fail(fname, lineno, regs, code);
+ __set_code_fail(regs, linecode, fname);
else
set_code_success(regs);
}
static void
-__disk_stub(const char *fname, int lineno, struct bregs *regs)
+__disk_stub(struct bregs *regs, int lineno, const char *fname)
{
- __debug_stub(fname, lineno, regs);
- __disk_ret(fname, lineno, regs, DISK_RET_SUCCESS);
+ __debug_stub(regs, lineno, fname);
+ __disk_ret(regs, DISK_RET_SUCCESS | (lineno << 8), fname);
}
-#define DISK_STUB(regs) \
- __disk_stub(__func__, __LINE__, (regs))
+#define DISK_STUB(regs) \
+ __disk_stub((regs), __LINE__, __func__)
+
+static int
+__send_disk_op(struct disk_op_s *op_p, u16 op_s)
+{
+ struct disk_op_s dop;
+ memcpy_far(MAKE_FARPTR(GET_SEG(SS), &dop)
+ , MAKE_FARPTR(op_s, op_p)
+ , sizeof(dop));
+
+ dprintf(DEBUG_HDL_13, "disk_op d=%d lba=%d buf=%p count=%d cmd=%d\n"
+ , dop.driveid, (u32)dop.lba, dop.far_buffer
+ , dop.count, dop.command);
+
+ irq_enable();
+
+ int status;
+ if (dop.command == CMD_CDEMU_READ)
+ status = cdrom_read_512(&dop);
+ else if (dop.command == CMD_CDROM_READ)
+ status = cdrom_read(&dop);
+ else
+ status = ata_cmd_data(&dop);
+
+ irq_disable();
+
+ return status;
+}
+
+static int
+send_disk_op(struct disk_op_s *op)
+{
+ return stack_hop((u32)op, GET_SEG(SS), 0, __send_disk_op);
+}
static void
basic_access(struct bregs *regs, u8 device, u16 command)
{
+ struct disk_op_s dop;
+ dop.lba = 0;
+ dop.driveid = device;
u8 type = GET_GLOBAL(ATA.devices[device].type);
u16 nlc, nlh, nlspt;
if (type == ATA_TYPE_ATA) {
nlc = GET_GLOBAL(ATA.devices[device].lchs.cylinders);
nlh = GET_GLOBAL(ATA.devices[device].lchs.heads);
nlspt = GET_GLOBAL(ATA.devices[device].lchs.spt);
+ dop.command = command;
} else {
// Must be cd emulation.
- nlc = GET_GLOBAL(CDEMU.vdevice.cylinders);
- nlh = GET_GLOBAL(CDEMU.vdevice.heads);
- nlspt = GET_GLOBAL(CDEMU.vdevice.spt);
+ u16 ebda_seg = get_ebda_seg();
+ nlc = GET_EBDA2(ebda_seg, cdemu.cylinders);
+ nlh = GET_EBDA2(ebda_seg, cdemu.heads);
+ nlspt = GET_EBDA2(ebda_seg, cdemu.spt);
+ dop.lba = GET_EBDA2(ebda_seg, cdemu.ilba) * 4;
+ dop.command = CMD_CDEMU_READ;
}
- u16 count = regs->al;
+ dop.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 (dop.count > 128 || dop.count == 0 || sector == 0) {
dprintf(1, "int13_harddisk: function %02x, parameter out of range!\n"
, regs->ah);
disk_ret(regs, DISK_RET_EPARAM);
}
// translate lchs to lba
- u32 lba = (((((u32)cylinder * (u32)nlh) + (u32)head) * (u32)nlspt)
- + (u32)sector - 1);
+ dop.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);
-
- 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);
+ dop.far_buffer = MAKE_FARPTR(segment, offset);
- irq_disable();
+ int status = send_disk_op(&dop);
// Set nb of sector transferred
regs->al = GET_EBDA(sector_count);
dprintf(1, "int13_harddisk: function %02x, error %d!\n"
, regs->ah, status);
disk_ret(regs, DISK_RET_EBADTRACK);
+ return;
}
disk_ret(regs, DISK_RET_SUCCESS);
}
static void
extended_access(struct bregs *regs, u8 device, u16 command)
{
+ struct disk_op_s dop;
// Get lba and check.
- u64 lba = GET_INT13EXT(regs, lba);
+ dop.lba = GET_INT13EXT(regs, lba);
+ dop.command = command;
+ dop.driveid = device;
u8 type = GET_GLOBAL(ATA.devices[device].type);
- if (type == ATA_TYPE_ATA
- && lba >= GET_GLOBAL(ATA.devices[device].sectors)) {
- dprintf(1, "int13_harddisk: function %02x. LBA out of range\n"
- , regs->ah);
- disk_ret(regs, DISK_RET_EPARAM);
- return;
+ if (type == ATA_TYPE_ATA) {
+ if (dop.lba >= GET_GLOBAL(ATA.devices[device].sectors)) {
+ dprintf(1, "int13_harddisk: function %02x. LBA out of range\n"
+ , regs->ah);
+ disk_ret(regs, DISK_RET_EPARAM);
+ return;
+ }
+ } else {
+ dop.command = CMD_CDROM_READ;
}
if (!command) {
u16 segment = GET_INT13EXT(regs, segment);
u16 offset = GET_INT13EXT(regs, offset);
- void *far_buffer = MAKE_FARPTR(segment, offset);
- u16 count = GET_INT13EXT(regs, count);
-
- dprintf(DEBUG_HDL_13, "extacc lba=%d buf=%p count=%d\n"
- , (u32)lba, far_buffer, count);
-
- irq_enable();
+ dop.far_buffer = MAKE_FARPTR(segment, offset);
+ dop.count = GET_INT13EXT(regs, count);
- int 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();
+ int status = send_disk_op(&dop);
SET_INT13EXT(regs, count, GET_EBDA(sector_count));
u16 nlc = GET_GLOBAL(ATA.devices[device].lchs.cylinders);
u16 nlh = GET_GLOBAL(ATA.devices[device].lchs.heads);
u16 nlspt = GET_GLOBAL(ATA.devices[device].lchs.spt);
- u16 count = GET_GLOBAL(ATA.hdcount);
+ u16 count = GET_BDA(hdcount);
nlc = nlc - 2; /* 0 based , last sector not used */
regs->al = 0;
// EDD 2.x
+ u16 ebda_seg = get_ebda_seg();
SET_INT13DPT(regs, size, 30);
- SET_INT13DPT(regs, dpte_segment, GET_BDA(ebda_seg));
+ SET_INT13DPT(regs, dpte_segment, ebda_seg);
SET_INT13DPT(regs, dpte_offset
, offsetof(struct extended_bios_data_area_s, dpte));
if (mode == ATA_MODE_PIO32)
options |= 1<<7;
- SET_EBDA(dpte.iobase1, iobase1);
- SET_EBDA(dpte.iobase2, iobase2 + ATA_CB_DC);
- SET_EBDA(dpte.prefix, ((slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0)
- | ATA_CB_DH_LBA));
- SET_EBDA(dpte.unused, 0xcb);
- SET_EBDA(dpte.irq, irq);
- SET_EBDA(dpte.blkcount, 1);
- SET_EBDA(dpte.dma, 0);
- SET_EBDA(dpte.pio, 0);
- SET_EBDA(dpte.options, options);
- SET_EBDA(dpte.reserved, 0);
- SET_EBDA(dpte.revision, 0x11);
-
- u8 *p = MAKE_FARPTR(GET_BDA(ebda_seg)
+ 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 *p = MAKE_FARPTR(ebda_seg
, offsetof(struct extended_bios_data_area_s, dpte));
- SET_EBDA(dpte.checksum, -checksum(p, 15));
+ SET_EBDA2(ebda_seg, dpte.checksum, -checksum(p, 15));
if (size < 66) {
disk_ret(regs, DISK_RET_SUCCESS);
cdemu_134b(regs);
return;
}
- if (GET_EBDA(cdemu_active)) {
- if (drive == GET_GLOBAL(CDEMU.emulated_drive)) {
+ u16 ebda_seg = get_ebda_seg();
+ if (GET_EBDA2(ebda_seg, cdemu.active)) {
+ if (drive == GET_EBDA2(ebda_seg, cdemu.emulated_drive)) {
cdemu_13(regs);
return;
}
projects / seabios.git / blobdiff