OpenE2K
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qemu-e2k
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Revert "Last AIO Patch" as requested by Fabrice, it is incomplete and 

breaks other (non-Windows) systems.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3552 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2007-11-08 16:38:17 +00:00
parent ec6338bac3
commit 31c2a146ec
1 changed files with 18 additions and 38 deletions
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56
hw/ide.c
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@ -358,7 +358,7 @@ typedef struct IDEState {
uint8_t *data_ptr;
uint8_t *data_end;
uint8_t io_buffer[MAX_MULT_SECTORS*512 + 4];
QEMUTimer *sector_write_timer; /* only used for win2k instal hack */
QEMUTimer *sector_write_timer; /* only used for win2k install hack */
uint32_t irq_count; /* counts IRQs when using win2k install hack */
/* CF-ATA extended error */
uint8_t ext_error;
@ -865,44 +865,10 @@ static void ide_sector_write_timer_cb(void *opaque)
ide_set_irq(s);
}
static void ide_sector_write_aio_cb(void *opaque, int ret)
{
BMDMAState *bm = opaque;
IDEState *s = bm->ide_if;
#ifdef TARGET_I386
if (win2k_install_hack && ((++s->irq_count % 16) == 0)) {
/* It seems there is a bug in the Windows 2000 installer HDD
IDE driver which fills the disk with empty logs when the
IDE write IRQ comes too early. This hack tries to correct
that at the expense of slower write performances. Use this
option _only_ to install Windows 2000. You must disable it
for normal use. */
qemu_mod_timer(s->sector_write_timer,
qemu_get_clock(vm_clock) + (ticks_per_sec / 1000));
} else
#endif
{
ide_set_irq(s);
}
bm->aiocb = NULL;
}
static void ide_sector_write(IDEState *s)
{
BMDMAState *bm;
int64_t sector_num;
int n, n1;
s->io_buffer_index = 0;
s->io_buffer_size = 0;
bm = s->bmdma;
if(bm == NULL) {
bm = qemu_mallocz(sizeof(BMDMAState));
s->bmdma = bm;
}
bm->ide_if = s;
bm->dma_cb = ide_sector_write_aio_cb;
int ret, n, n1;
s->status = READY_STAT | SEEK_STAT;
sector_num = ide_get_sector(s);
@ -912,6 +878,7 @@ static void ide_sector_write(IDEState *s)
n = s->nsector;
if (n > s->req_nb_sectors)
n = s->req_nb_sectors;
ret = bdrv_write(s->bs, sector_num, s->io_buffer, n);
s->nsector -= n;
if (s->nsector == 0) {
/* no more sectors to write */
@ -924,8 +891,21 @@ static void ide_sector_write(IDEState *s)
}
ide_set_sector(s, sector_num + n);
bm->aiocb = bdrv_aio_write(s->bs, sector_num, s->io_buffer, n,
ide_sector_write_aio_cb, bm);
#ifdef TARGET_I386
if (win2k_install_hack && ((++s->irq_count % 16) == 0)) {
/* It seems there is a bug in the Windows 2000 installer HDD
IDE driver which fills the disk with empty logs when the
IDE write IRQ comes too early. This hack tries to correct
that at the expense of slower write performances. Use this
option _only_ to install Windows 2000. You must disable it
for normal use. */
qemu_mod_timer(s->sector_write_timer,
qemu_get_clock(vm_clock) + (ticks_per_sec / 1000));
} else
#endif
{
ide_set_irq(s);
}
}
/* XXX: handle errors */