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MIPS: Alchemy: change dbdma to accept physical memory addresses

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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>
This commit is contained in:
Manuel Lauss
2009-10-13 20:22:35 +02:00
committed by Ralf Baechle
parent ea071cc705
commit 963accbc82
7 changed files with 26 additions and 26 deletions
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8
arch/mips/alchemy/common/dbdma.c
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@ -571,7 +571,7 @@ EXPORT_SYMBOL(au1xxx_dbdma_ring_alloc);
* This updates the source pointer and byte count. Normally used
* for memory to fifo transfers.
*/
u32 au1xxx_dbdma_put_source(u32 chanid, void *buf, int nbytes, u32 flags)
u32 au1xxx_dbdma_put_source(u32 chanid, dma_addr_t buf, int nbytes, u32 flags)
{
chan_tab_t *ctp;
au1x_ddma_desc_t *dp;
@ -597,7 +597,7 @@ u32 au1xxx_dbdma_put_source(u32 chanid, void *buf, int nbytes, u32 flags)
return 0;
/* Load up buffer address and byte count. */
dp->dscr_source0 = virt_to_phys(buf);
dp->dscr_source0 = buf & ~0UL;
dp->dscr_cmd1 = nbytes;
/* Check flags */
if (flags & DDMA_FLAGS_IE)
@ -630,7 +630,7 @@ EXPORT_SYMBOL(au1xxx_dbdma_put_source);
* This updates the destination pointer and byte count. Normally used
* to place an empty buffer into the ring for fifo to memory transfers.
*/
u32 au1xxx_dbdma_put_dest(u32 chanid, void *buf, int nbytes, u32 flags)
u32 au1xxx_dbdma_put_dest(u32 chanid, dma_addr_t buf, int nbytes, u32 flags)
{
chan_tab_t *ctp;
au1x_ddma_desc_t *dp;
@ -660,7 +660,7 @@ u32 au1xxx_dbdma_put_dest(u32 chanid, void *buf, int nbytes, u32 flags)
if (flags & DDMA_FLAGS_NOIE)
dp->dscr_cmd0 &= ~DSCR_CMD0_IE;
dp->dscr_dest0 = virt_to_phys(buf);
dp->dscr_dest0 = buf & ~0UL;
dp->dscr_cmd1 = nbytes;
#if 0
printk(KERN_DEBUG "cmd0:%x cmd1:%x source0:%x source1:%x dest0:%x dest1:%x\n",