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MIPS: Alchemy: change dbdma to accept physical memory addresses

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DMA can only be done from physical addresses; move the "virt_to_phys"
source/destination buffer address translation from the dbdma queueing
functions (since the hardware can only DMA to/from physical addresses)
to their respective users.

Signed-off-by: Manuel Lauss <[email protected]>
Signed-off-by: Ralf Baechle <[email protected]>
This commit is contained in:
Manuel Lauss 2009-10-13 20:22:35 +02:00 • committed by Ralf Baechle
commit 963accbc82
7 changed files with 26 additions and 26 deletions
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12
sound/oss/au1550_ac97.c
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@ -614,7 +614,7 @@ start_adc(struct au1550_state *s)
/* Put two buffers on the ring to get things started.
*/
for (i=0; i<2; i++) {
au1xxx_dbdma_put_dest(db->dmanr, db->nextIn,
au1xxx_dbdma_put_dest(db->dmanr, virt_to_phys(db->nextIn),
db->dma_fragsize, DDMA_FLAGS_IE);
db->nextIn += db->dma_fragsize;
@ -733,8 +733,9 @@ static void dac_dma_interrupt(int irq, void *dev_id)
db->dma_qcount--;
if (db->count >= db->fragsize) {
if (au1xxx_dbdma_put_source(db->dmanr, db->nextOut,
db->fragsize, DDMA_FLAGS_IE) == 0) {
if (au1xxx_dbdma_put_source(db->dmanr,
virt_to_phys(db->nextOut), db->fragsize,
DDMA_FLAGS_IE) == 0) {
err("qcount < 2 and no ring room!");
}
db->nextOut += db->fragsize;
@ -778,7 +779,7 @@ static void adc_dma_interrupt(int irq, void *dev_id)
/* Put a new empty buffer on the destination DMA.
*/
au1xxx_dbdma_put_dest(dp->dmanr, dp->nextIn,
au1xxx_dbdma_put_dest(dp->dmanr, virt_to_phys(dp->nextIn),
dp->dma_fragsize, DDMA_FLAGS_IE);
dp->nextIn += dp->dma_fragsize;
@ -1180,7 +1181,8 @@ au1550_write(struct file *file, const char *buffer, size_t count, loff_t * ppos)
*/
while ((db->dma_qcount < 2) && (db->count >= db->fragsize)) {
if (au1xxx_dbdma_put_source(db->dmanr,
db->nextOut, db->fragsize, DDMA_FLAGS_IE) == 0) {
virt_to_phys(db->nextOut), db->fragsize,
DDMA_FLAGS_IE) == 0) {
err("qcount < 2 and no ring room!");
}
db->nextOut += db->fragsize;