ShuriZma
/
xqemu
mirror of https://github.com/xqemu/xqemu.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

ide: Reset BMIDEA bit when the bus master is stopped 

The device is supposed to reset the Bus Master IDE Active bit in the
status register when 0 is written to the Start/Stop Bus Master bit in
the command register.

In the common cases this happens automatically because bdrv_drain_all()
flushes the requests, but with a large PRDT it could remain set.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2013-03-13 16:53:06 +01:00
parent 3bac85d337
commit b39f961265
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
hw/ide/pci.c
View File

@ -312,6 +312,7 @@ void bmdma_cmd_writeb(BMDMAState *bm, uint32_t val)
bdrv_drain_all(); bdrv_drain_all();
assert(bm->bus->dma->aiocb == NULL); assert(bm->bus->dma->aiocb == NULL);
} }
bm->status &= ~BM_STATUS_DMAING;
} else { } else {
bm->cur_addr = bm->addr; bm->cur_addr = bm->addr;
if (!(bm->status & BM_STATUS_DMAING)) { if (!(bm->status & BM_STATUS_DMAING)) {