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>

1 files changed, 7 insertions, 5 deletions

diff --git a/sound/oss/au1550_ac97.c b/sound/oss/au1550_ac97.c
index b9ff0b798032..c1070e33b32f 100644
--- a/sound/oss/au1550_ac97.c
+++ b/sound/oss/au1550_ac97.c
@@ -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;