From 963accbc82a0912b39de39d59e2fd6741db3aa4b Mon Sep 17 00:00:00 2001 From: Manuel Lauss Date: Tue, 13 Oct 2009 20:22:35 +0200 Subject: 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 Signed-off-by: Ralf Baechle --- sound/oss/au1550_ac97.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) (limited to 'sound/oss/au1550_ac97.c') 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; -- cgit v1.2.3