MIPS: Alchemy: change dbdma to accept physical memory addresses
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 <manuel.lauss@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/sound/oss/au1550_ac97.c b/sound/oss/au1550_ac97.c
index b9ff0b7..c1070e3 100644
--- a/sound/oss/au1550_ac97.c
+++ b/sound/oss/au1550_ac97.c
@@ -614,7 +614,7 @@
/* 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 @@
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 @@
/* 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 @@
*/
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;