Revision 31c2a146 hw/ide.c
| b/hw/ide.c | ||
|---|---|---|
| 358 | 358 |
uint8_t *data_ptr; |
| 359 | 359 |
uint8_t *data_end; |
| 360 | 360 |
uint8_t io_buffer[MAX_MULT_SECTORS*512 + 4]; |
| 361 |
QEMUTimer *sector_write_timer; /* only used for win2k instal hack */ |
|
| 361 |
QEMUTimer *sector_write_timer; /* only used for win2k install hack */
|
|
| 362 | 362 |
uint32_t irq_count; /* counts IRQs when using win2k install hack */ |
| 363 | 363 |
/* CF-ATA extended error */ |
| 364 | 364 |
uint8_t ext_error; |
| ... | ... | |
| 865 | 865 |
ide_set_irq(s); |
| 866 | 866 |
} |
| 867 | 867 |
|
| 868 |
static void ide_sector_write_aio_cb(void *opaque, int ret) |
|
| 869 |
{
|
|
| 870 |
BMDMAState *bm = opaque; |
|
| 871 |
IDEState *s = bm->ide_if; |
|
| 872 |
|
|
| 873 |
#ifdef TARGET_I386 |
|
| 874 |
if (win2k_install_hack && ((++s->irq_count % 16) == 0)) {
|
|
| 875 |
/* It seems there is a bug in the Windows 2000 installer HDD |
|
| 876 |
IDE driver which fills the disk with empty logs when the |
|
| 877 |
IDE write IRQ comes too early. This hack tries to correct |
|
| 878 |
that at the expense of slower write performances. Use this |
|
| 879 |
option _only_ to install Windows 2000. You must disable it |
|
| 880 |
for normal use. */ |
|
| 881 |
qemu_mod_timer(s->sector_write_timer, |
|
| 882 |
qemu_get_clock(vm_clock) + (ticks_per_sec / 1000)); |
|
| 883 |
} else |
|
| 884 |
#endif |
|
| 885 |
{
|
|
| 886 |
ide_set_irq(s); |
|
| 887 |
} |
|
| 888 |
bm->aiocb = NULL; |
|
| 889 |
} |
|
| 890 |
|
|
| 891 | 868 |
static void ide_sector_write(IDEState *s) |
| 892 | 869 |
{
|
| 893 |
BMDMAState *bm; |
|
| 894 | 870 |
int64_t sector_num; |
| 895 |
int n, n1; |
|
| 896 |
|
|
| 897 |
s->io_buffer_index = 0; |
|
| 898 |
s->io_buffer_size = 0; |
|
| 899 |
bm = s->bmdma; |
|
| 900 |
if(bm == NULL) {
|
|
| 901 |
bm = qemu_mallocz(sizeof(BMDMAState)); |
|
| 902 |
s->bmdma = bm; |
|
| 903 |
} |
|
| 904 |
bm->ide_if = s; |
|
| 905 |
bm->dma_cb = ide_sector_write_aio_cb; |
|
| 871 |
int ret, n, n1; |
|
| 906 | 872 |
|
| 907 | 873 |
s->status = READY_STAT | SEEK_STAT; |
| 908 | 874 |
sector_num = ide_get_sector(s); |
| ... | ... | |
| 912 | 878 |
n = s->nsector; |
| 913 | 879 |
if (n > s->req_nb_sectors) |
| 914 | 880 |
n = s->req_nb_sectors; |
| 881 |
ret = bdrv_write(s->bs, sector_num, s->io_buffer, n); |
|
| 915 | 882 |
s->nsector -= n; |
| 916 | 883 |
if (s->nsector == 0) {
|
| 917 | 884 |
/* no more sectors to write */ |
| ... | ... | |
| 924 | 891 |
} |
| 925 | 892 |
ide_set_sector(s, sector_num + n); |
| 926 | 893 |
|
| 927 |
bm->aiocb = bdrv_aio_write(s->bs, sector_num, s->io_buffer, n, |
|
| 928 |
ide_sector_write_aio_cb, bm); |
|
| 894 |
#ifdef TARGET_I386 |
|
| 895 |
if (win2k_install_hack && ((++s->irq_count % 16) == 0)) {
|
|
| 896 |
/* It seems there is a bug in the Windows 2000 installer HDD |
|
| 897 |
IDE driver which fills the disk with empty logs when the |
|
| 898 |
IDE write IRQ comes too early. This hack tries to correct |
|
| 899 |
that at the expense of slower write performances. Use this |
|
| 900 |
option _only_ to install Windows 2000. You must disable it |
|
| 901 |
for normal use. */ |
|
| 902 |
qemu_mod_timer(s->sector_write_timer, |
|
| 903 |
qemu_get_clock(vm_clock) + (ticks_per_sec / 1000)); |
|
| 904 |
} else |
|
| 905 |
#endif |
|
| 906 |
{
|
|
| 907 |
ide_set_irq(s); |
|
| 908 |
} |
|
| 929 | 909 |
} |
| 930 | 910 |
|
| 931 | 911 |
/* XXX: handle errors */ |
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