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LBA48 support (Jens Axboe)

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1853 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2006-04-25 21:24:22 +00:00
parent 467d409f7e
commit c2ff060fd4
1 changed files with 137 additions and 20 deletions
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157
hw/ide.c
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@ -307,14 +307,24 @@ typedef struct IDEState {
/* ide regs */
uint8_t feature;
uint8_t error;
uint16_t nsector; /* 0 is 256 to ease computations */
uint32_t nsector;
uint8_t sector;
uint8_t lcyl;
uint8_t hcyl;
/* other part of tf for lba48 support */
uint8_t hob_feature;
uint8_t hob_nsector;
uint8_t hob_sector;
uint8_t hob_lcyl;
uint8_t hob_hcyl;
uint8_t select;
uint8_t status;
/* 0x3f6 command, only meaningful for drive 0 */
uint8_t cmd;
/* set for lba48 access */
uint8_t lba48;
/* depends on bit 4 in select, only meaningful for drive 0 */
struct IDEState *cur_drive;
BlockDriverState *bs;
@ -463,13 +473,19 @@ static void ide_identify(IDEState *s)
put_le16(p + 80, 0xf0); /* ata3 -> ata6 supported */
put_le16(p + 81, 0x16); /* conforms to ata5 */
put_le16(p + 82, (1 << 14));
put_le16(p + 83, (1 << 14));
/* 13=flush_cache_ext,12=flush_cache,10=lba48 */
put_le16(p + 83, (1 << 14) | (1 << 13) | (1 <<12) | (1 << 10));
put_le16(p + 84, (1 << 14));
put_le16(p + 85, (1 << 14));
put_le16(p + 86, 0);
/* 13=flush_cache_ext,12=flush_cache,10=lba48 */
put_le16(p + 86, (1 << 14) | (1 << 13) | (1 <<12) | (1 << 10));
put_le16(p + 87, (1 << 14));
put_le16(p + 88, 0x3f | (1 << 13)); /* udma5 set and supported */
put_le16(p + 93, 1 | (1 << 14) | 0x2000);
put_le16(p + 100, s->nb_sectors);
put_le16(p + 101, s->nb_sectors >> 16);
put_le16(p + 102, s->nb_sectors >> 32);
put_le16(p + 103, s->nb_sectors >> 48);
memcpy(s->identify_data, p, sizeof(s->identify_data));
s->identify_set = 1;
@ -573,12 +589,19 @@ static int64_t ide_get_sector(IDEState *s)
int64_t sector_num;
if (s->select & 0x40) {
/* lba */
sector_num = ((s->select & 0x0f) << 24) | (s->hcyl << 16) |
(s->lcyl << 8) | s->sector;
if (!s->lba48) {
sector_num = ((s->select & 0x0f) << 24) | (s->hcyl << 16) |
(s->lcyl << 8) | s->sector;
} else {
sector_num = ((int64_t)s->hob_hcyl << 40) |
((int64_t) s->hob_lcyl << 32) |
((int64_t) s->hob_sector << 24) |
((int64_t) s->hcyl << 16) |
((int64_t) s->lcyl << 8) | s->sector;
}
} else {
sector_num = ((s->hcyl << 8) | s->lcyl) * s->heads * s->sectors +
(s->select & 0x0f) * s->sectors +
(s->sector - 1);
(s->select & 0x0f) * s->sectors + (s->sector - 1);
}
return sector_num;
}
@ -587,10 +610,19 @@ static void ide_set_sector(IDEState *s, int64_t sector_num)
{
unsigned int cyl, r;
if (s->select & 0x40) {
s->select = (s->select & 0xf0) | (sector_num >> 24);
s->hcyl = (sector_num >> 16);
s->lcyl = (sector_num >> 8);
s->sector = (sector_num);
if (!s->lba48) {
s->select = (s->select & 0xf0) | (sector_num >> 24);
s->hcyl = (sector_num >> 16);
s->lcyl = (sector_num >> 8);
s->sector = (sector_num);
} else {
s->sector = sector_num;
s->lcyl = sector_num >> 8;
s->hcyl = sector_num >> 16;
s->hob_sector = sector_num >> 24;
s->hob_lcyl = sector_num >> 32;
s->hob_hcyl = sector_num >> 40;
}
} else {
cyl = sector_num / (s->heads * s->sectors);
r = sector_num % (s->heads * s->sectors);
@ -1488,43 +1520,89 @@ static void cdrom_change_cb(void *opaque)
s->nb_sectors = nb_sectors;
}
static void ide_cmd_lba48_transform(IDEState *s, int lba48)
{
s->lba48 = lba48;
/* handle the 'magic' 0 nsector count conversion here. to avoid
* fiddling with the rest of the read logic, we just store the
* full sector count in ->nsector and ignore ->hob_nsector from now
*/
if (!s->lba48) {
if (!s->nsector)
s->nsector = 256;
} else {
if (!s->nsector && !s->hob_nsector)
s->nsector = 65536;
else {
int lo = s->nsector;
int hi = s->hob_nsector;
s->nsector = (hi << 8) | lo;
}
}
}
static void ide_clear_hob(IDEState *ide_if)
{
/* any write clears HOB high bit of device control register */
ide_if[0].select &= ~(1 << 7);
ide_if[1].select &= ~(1 << 7);
}
static void ide_ioport_write(void *opaque, uint32_t addr, uint32_t val)
{
IDEState *ide_if = opaque;
IDEState *s;
int unit, n;
int lba48 = 0;
#ifdef DEBUG_IDE
printf("IDE: write addr=0x%x val=0x%02x\n", addr, val);
#endif
addr &= 7;
switch(addr) {
case 0:
break;
case 1:
ide_clear_hob(ide_if);
/* NOTE: data is written to the two drives */
ide_if[0].hob_feature = ide_if[0].feature;
ide_if[1].hob_feature = ide_if[1].feature;
ide_if[0].feature = val;
ide_if[1].feature = val;
break;
case 2:
if (val == 0)
val = 256;
ide_clear_hob(ide_if);
ide_if[0].hob_nsector = ide_if[0].nsector;
ide_if[1].hob_nsector = ide_if[1].nsector;
ide_if[0].nsector = val;
ide_if[1].nsector = val;
break;
case 3:
ide_clear_hob(ide_if);
ide_if[0].hob_sector = ide_if[0].sector;
ide_if[1].hob_sector = ide_if[1].sector;
ide_if[0].sector = val;
ide_if[1].sector = val;
break;
case 4:
ide_clear_hob(ide_if);
ide_if[0].hob_lcyl = ide_if[0].lcyl;
ide_if[1].hob_lcyl = ide_if[1].lcyl;
ide_if[0].lcyl = val;
ide_if[1].lcyl = val;
break;
case 5:
ide_clear_hob(ide_if);
ide_if[0].hob_hcyl = ide_if[0].hcyl;
ide_if[1].hob_hcyl = ide_if[1].hcyl;
ide_if[0].hcyl = val;
ide_if[1].hcyl = val;
break;
case 6:
/* FIXME: HOB readback uses bit 7 */
ide_if[0].select = (val & ~0x10) | 0xa0;
ide_if[1].select = (val | 0x10) | 0xa0;
/* select drive */
@ -1542,6 +1620,7 @@ static void ide_ioport_write(void *opaque, uint32_t addr, uint32_t val)
/* ignore commands to non existant slave */
if (s != ide_if && !s->bs)
break;
switch(val) {
case WIN_IDENTIFY:
if (s->bs && !s->is_cdrom) {
@ -1573,35 +1652,50 @@ static void ide_ioport_write(void *opaque, uint32_t addr, uint32_t val)
}
ide_set_irq(s);
break;
case WIN_VERIFY_EXT:
lba48 = 1;
case WIN_VERIFY:
case WIN_VERIFY_ONCE:
/* do sector number check ? */
ide_cmd_lba48_transform(s, lba48);
s->status = READY_STAT;
ide_set_irq(s);
break;
case WIN_READ_EXT:
lba48 = 1;
case WIN_READ:
case WIN_READ_ONCE:
if (!s->bs)
goto abort_cmd;
ide_cmd_lba48_transform(s, lba48);
s->req_nb_sectors = 1;
ide_sector_read(s);
break;
case WIN_WRITE_EXT:
lba48 = 1;
case WIN_WRITE:
case WIN_WRITE_ONCE:
ide_cmd_lba48_transform(s, lba48);
s->error = 0;
s->status = SEEK_STAT | READY_STAT;
s->req_nb_sectors = 1;
ide_transfer_start(s, s->io_buffer, 512, ide_sector_write);
break;
case WIN_MULTREAD_EXT:
lba48 = 1;
case WIN_MULTREAD:
if (!s->mult_sectors)
goto abort_cmd;
ide_cmd_lba48_transform(s, lba48);
s->req_nb_sectors = s->mult_sectors;
ide_sector_read(s);
break;
case WIN_MULTWRITE_EXT:
lba48 = 1;
case WIN_MULTWRITE:
if (!s->mult_sectors)
goto abort_cmd;
ide_cmd_lba48_transform(s, lba48);
s->error = 0;
s->status = SEEK_STAT | READY_STAT;
s->req_nb_sectors = s->mult_sectors;
@ -1610,19 +1704,28 @@ static void ide_ioport_write(void *opaque, uint32_t addr, uint32_t val)
n = s->req_nb_sectors;
ide_transfer_start(s, s->io_buffer, 512 * n, ide_sector_write);
break;
case WIN_READDMA_EXT:
lba48 = 1;
case WIN_READDMA:
case WIN_READDMA_ONCE:
if (!s->bs)
goto abort_cmd;
ide_cmd_lba48_transform(s, lba48);
ide_sector_read_dma(s);
break;
case WIN_WRITEDMA_EXT:
lba48 = 1;
case WIN_WRITEDMA:
case WIN_WRITEDMA_ONCE:
if (!s->bs)
goto abort_cmd;
ide_cmd_lba48_transform(s, lba48);
ide_sector_write_dma(s);
break;
case WIN_READ_NATIVE_MAX_EXT:
lba48 = 1;
case WIN_READ_NATIVE_MAX:
ide_cmd_lba48_transform(s, lba48);
ide_set_sector(s, s->nb_sectors - 1);
s->status = READY_STAT;
ide_set_irq(s);
@ -1672,9 +1775,10 @@ static void ide_ioport_write(void *opaque, uint32_t addr, uint32_t val)
goto abort_cmd;
}
break;
case WIN_FLUSH_CACHE:
case WIN_FLUSH_CACHE_EXT:
case WIN_STANDBYNOW1:
case WIN_IDLEIMMEDIATE:
case WIN_FLUSH_CACHE:
s->status = READY_STAT;
ide_set_irq(s);
break;
@ -1726,9 +1830,12 @@ static uint32_t ide_ioport_read(void *opaque, uint32_t addr1)
IDEState *ide_if = opaque;
IDEState *s = ide_if->cur_drive;
uint32_t addr;
int ret;
int ret, hob;
addr = addr1 & 7;
/* FIXME: HOB readback uses bit 7, but it's always set right now */
//hob = s->select & (1 << 7);
hob = 0;
switch(addr) {
case 0:
ret = 0xff;
@ -1736,32 +1843,42 @@ static uint32_t ide_ioport_read(void *opaque, uint32_t addr1)
case 1:
if (!ide_if[0].bs && !ide_if[1].bs)
ret = 0;
else
else if (!hob)
ret = s->error;
else
ret = s->hob_feature;
break;
case 2:
if (!ide_if[0].bs && !ide_if[1].bs)
ret = 0;
else
else if (!hob)
ret = s->nsector & 0xff;
else
ret = s->hob_nsector;
break;
case 3:
if (!ide_if[0].bs && !ide_if[1].bs)
ret = 0;
else
else if (!hob)
ret = s->sector;
else
ret = s->hob_sector;
break;
case 4:
if (!ide_if[0].bs && !ide_if[1].bs)
ret = 0;
else
else if (!hob)
ret = s->lcyl;
else
ret = s->hob_lcyl;
break;
case 5:
if (!ide_if[0].bs && !ide_if[1].bs)
ret = 0;
else
else if (!hob)
ret = s->hcyl;
else
ret = s->hob_hcyl;
break;
case 6:
if (!ide_if[0].bs && !ide_if[1].bs)