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PPC: dbdma: macio: Add DMA callback 

We need to know when the IDE core starts a DMA transfer. Add a notifier
function so we have the chance to start transmitting data.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2013-06-30 02:36:14 +02:00
parent d2f0ce2189
commit 4aa3510f6f
2 changed files with 42 additions and 0 deletions
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40
hw/ide/macio.c
View File

@ -359,11 +359,50 @@ static void macio_ide_reset(DeviceState *dev)
ide_bus_reset(&d->bus);
}
static int ide_nop(IDEDMA *dma)
{
return 0;
}
static int ide_nop_int(IDEDMA *dma, int x)
{
return 0;
}
static void ide_nop_restart(void *opaque, int x, RunState y)
{
}
static void ide_dbdma_start(IDEDMA *dma, IDEState *s,
BlockDriverCompletionFunc *cb)
{
MACIOIDEState *m = container_of(dma, MACIOIDEState, dma);
MACIO_DPRINTF("\n");
DBDMA_kick(m->dbdma);
}
static const IDEDMAOps dbdma_ops = {
.start_dma = ide_dbdma_start,
.start_transfer = ide_nop,
.prepare_buf = ide_nop_int,
.rw_buf = ide_nop_int,
.set_unit = ide_nop_int,
.add_status = ide_nop_int,
.set_inactive = ide_nop,
.restart_cb = ide_nop_restart,
.reset = ide_nop,
};
static void macio_ide_realizefn(DeviceState *dev, Error **errp)
{
MACIOIDEState *s = MACIO_IDE(dev);
ide_init2(&s->bus, s->irq);
/* Register DMA callbacks */
s->dma.ops = &dbdma_ops;
s->bus.dma = &s->dma;
}
static void macio_ide_initfn(Object *obj)
@ -414,6 +453,7 @@ void macio_ide_init_drives(MACIOIDEState *s, DriveInfo **hd_table)
void macio_ide_register_dma(MACIOIDEState *s, void *dbdma, int channel)
{
s->dbdma = dbdma;
DBDMA_register_channel(dbdma, channel, s->dma_irq,
pmac_ide_transfer, pmac_ide_flush, s);
}

2
hw/ppc/mac.h
View File

@ -131,6 +131,8 @@ typedef struct MACIOIDEState {
MemoryRegion mem;
IDEBus bus;
BlockDriverAIOCB *aiocb;
IDEDMA dma;
void *dbdma;
} MACIOIDEState;
void macio_ide_init_drives(MACIOIDEState *ide, DriveInfo **hd_table);