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authorManuel Lauss <manuel.lauss@googlemail.com>2009-10-13 20:22:35 +0200
committerRalf Baechle <ralf@linux-mips.org>2010-02-27 12:52:55 +0100
commit963accbc82a0912b39de39d59e2fd6741db3aa4b (patch)
tree4ea340b0261ab19f3f0776f47e4fab8708934b5b /sound/oss
parentea071cc705e8bfba0c8bf84be8d4f9f4e9da6962 (diff)
downloadop-kernel-dev-963accbc82a0912b39de39d59e2fd6741db3aa4b.zip
op-kernel-dev-963accbc82a0912b39de39d59e2fd6741db3aa4b.tar.gz
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>
Diffstat (limited to 'sound/oss')
-rw-r--r--sound/oss/au1550_ac97.c12
1 files changed, 7 insertions, 5 deletions
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 @@ 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;
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