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Cancel IDE outstanding IO on device reset (Gleb Natapov)

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Cancel AIO in IDE layer on device rest in order to be in deterministic state
during next boot.

Signed-off-by: Gleb Natapov <gleb@qumranet.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5011 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2008-08-15 18:21:58 +00:00
parent 414f0dab09
commit 72c7b06cb7
1 changed files with 26 additions and 14 deletions
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40
hw/ide.c
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@ -2844,6 +2844,23 @@ static void ide_dma_start(IDEState *s, BlockDriverCompletionFunc *dma_cb)
}
}
static void ide_dma_cancel(BMDMAState *bm)
{
if (bm->status & BM_STATUS_DMAING) {
bm->status &= ~BM_STATUS_DMAING;
/* cancel DMA request */
bm->ide_if = NULL;
bm->dma_cb = NULL;
if (bm->aiocb) {
#ifdef DEBUG_AIO
printf("aio_cancel\n");
#endif
bdrv_aio_cancel(bm->aiocb);
bm->aiocb = NULL;
}
}
}
static void bmdma_cmd_writeb(void *opaque, uint32_t addr, uint32_t val)
{
BMDMAState *bm = opaque;
@ -2852,19 +2869,7 @@ static void bmdma_cmd_writeb(void *opaque, uint32_t addr, uint32_t val)
#endif
if (!(val & BM_CMD_START)) {
/* XXX: do it better */
if (bm->status & BM_STATUS_DMAING) {
bm->status &= ~BM_STATUS_DMAING;
/* cancel DMA request */
bm->ide_if = NULL;
bm->dma_cb = NULL;
if (bm->aiocb) {
#ifdef DEBUG_AIO
printf("aio_cancel\n");
#endif
bdrv_aio_cancel(bm->aiocb);
bm->aiocb = NULL;
}
}
ide_dma_cancel(bm);
bm->cmd = val & 0x09;
} else {
if (!(bm->status & BM_STATUS_DMAING)) {
@ -3188,9 +3193,14 @@ static int pci_ide_load(QEMUFile* f, void *opaque, int version_id)
return 0;
}
static void piix3_reset(PCIIDEState *d)
static void piix3_reset(void *opaque)
{
PCIIDEState *d = opaque;
uint8_t *pci_conf = d->dev.config;
int i;
for (i = 0; i < 2; i++)
ide_dma_cancel(&d->bmdma[i]);
pci_conf[0x04] = 0x00;
pci_conf[0x05] = 0x00;
@ -3224,6 +3234,7 @@ void pci_piix3_ide_init(PCIBus *bus, BlockDriverState **hd_table, int devfn,
pci_conf[0x0b] = 0x01; // class_base = PCI_mass_storage
pci_conf[0x0e] = 0x00; // header_type
qemu_register_reset(piix3_reset, d);
piix3_reset(d);
pci_register_io_region((PCIDevice *)d, 4, 0x10,
@ -3262,6 +3273,7 @@ void pci_piix4_ide_init(PCIBus *bus, BlockDriverState **hd_table, int devfn,
pci_conf[0x0b] = 0x01; // class_base = PCI_mass_storage
pci_conf[0x0e] = 0x00; // header_type
qemu_register_reset(piix3_reset, d);
piix3_reset(d);
pci_register_io_region((PCIDevice *)d, 4, 0x10,