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ide: fix migration in the middle of a bmdma transfer 

It reintroduces
    Revert "ide save/restore pio/atapi cmd transfer fields and io buffer"

but using subsections.  Added bonus is the addition of ide_dummy_transfer_stop
to transfer_end_table, that was missing.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Juan Quintela 2010-07-26 21:38:45 +02:00 committed by Anthony Liguori
parent 50641c5ce2
commit 5ee84c3375
1 changed files with 30 additions and 0 deletions
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30
hw/ide/pci.c
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@ -121,6 +121,28 @@ void bmdma_addr_writel(void *opaque, uint32_t addr, uint32_t val)
bm->cur_addr = bm->addr;
}
static bool ide_bmdma_current_needed(void *opaque)
{
BMDMAState *bm = opaque;
return (bm->cur_prd_len != 0);
}
static const VMStateDescription vmstate_bmdma_current = {
.name = "ide bmdma_current",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField []) {
VMSTATE_UINT32(cur_addr, BMDMAState),
VMSTATE_UINT32(cur_prd_last, BMDMAState),
VMSTATE_UINT32(cur_prd_addr, BMDMAState),
VMSTATE_UINT32(cur_prd_len, BMDMAState),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_bmdma = {
.name = "ide bmdma",
.version_id = 3,
@ -134,6 +156,14 @@ static const VMStateDescription vmstate_bmdma = {
VMSTATE_UINT32(nsector, BMDMAState),
VMSTATE_UINT8(unit, BMDMAState),
VMSTATE_END_OF_LIST()
},
.subsections = (VMStateSubsection []) {
{
.vmsd = &vmstate_bmdma_current,
.needed = ide_bmdma_current_needed,
}, {
/* empty */
}
}
};