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>

2 files changed, 12 insertions, 12 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;
diff --git a/sound/soc/au1x/dbdma2.c b/sound/soc/au1x/dbdma2.c
index 2929f1c..6d9f4c6 100644
--- a/sound/soc/au1x/dbdma2.c
+++ b/sound/soc/au1x/dbdma2.c
@@ -51,8 +51,8 @@ struct au1xpsc_audio_dmadata {
 	struct snd_pcm_substream *substream;
 	unsigned long curr_period;	/* current segment DDMA is working on */
 	unsigned long q_period;		/* queue period(s) */
-	unsigned long dma_area;		/* address of queued DMA area */
-	unsigned long dma_area_s;	/* start address of DMA area */
+	dma_addr_t dma_area;		/* address of queued DMA area */
+	dma_addr_t dma_area_s;		/* start address of DMA area */
 	unsigned long pos;		/* current byte position being played */
 	unsigned long periods;		/* number of SG segments in total */
 	unsigned long period_bytes;	/* size in bytes of one SG segment */
@@ -94,8 +94,7 @@ static const struct snd_pcm_hardware au1xpsc_pcm_hardware = {
 
 static void au1x_pcm_queue_tx(struct au1xpsc_audio_dmadata *cd)
 {
-	au1xxx_dbdma_put_source(cd->ddma_chan,
-				(void *)phys_to_virt(cd->dma_area),
+	au1xxx_dbdma_put_source(cd->ddma_chan, cd->dma_area,
 				cd->period_bytes, DDMA_FLAGS_IE);
 
 	/* update next-to-queue period */
@@ -109,8 +108,7 @@ static void au1x_pcm_queue_tx(struct au1xpsc_audio_dmadata *cd)
 
 static void au1x_pcm_queue_rx(struct au1xpsc_audio_dmadata *cd)
 {
-	au1xxx_dbdma_put_dest(cd->ddma_chan,
-			      (void *)phys_to_virt(cd->dma_area),
+	au1xxx_dbdma_put_dest(cd->ddma_chan, cd->dma_area,
 			      cd->period_bytes, DDMA_FLAGS_IE);
 
 	/* update next-to-queue period */
@@ -233,7 +231,7 @@ static int au1xpsc_pcm_hw_params(struct snd_pcm_substream *substream,
 	pcd->substream = substream;
 	pcd->period_bytes = params_period_bytes(params);
 	pcd->periods = params_periods(params);
-	pcd->dma_area_s = pcd->dma_area = (unsigned long)runtime->dma_addr;
+	pcd->dma_area_s = pcd->dma_area = runtime->dma_addr;
 	pcd->q_period = 0;
 	pcd->curr_period = 0;
 	pcd->pos = 0;