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PS3: sg chaining support

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Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Jens Axboe
2007-07-19 08:22:17 +02:00
parent 9b6eccfccb
commit d1ed455e30
2 changed files with 5 additions and 4 deletions
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7
arch/powerpc/platforms/ps3/system-bus.c
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@@ -616,17 +616,18 @@ static void ps3_unmap_single(struct device *_dev, dma_addr_t dma_addr,
} }
} }
static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sg, int nents, static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sgl,
enum dma_data_direction direction) int nents, enum dma_data_direction direction)
{ {
#if defined(CONFIG_PS3_DYNAMIC_DMA) #if defined(CONFIG_PS3_DYNAMIC_DMA)
BUG_ON("do"); BUG_ON("do");
return -EPERM; return -EPERM;
#else #else
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
struct scatterlist *sg;
int i; int i;
for (i = 0; i < nents; i++, sg++) { for_each_sg(sgl, sg, nents, i) {
int result = ps3_dma_map(dev->d_region, int result = ps3_dma_map(dev->d_region,
page_to_phys(sg->page) + sg->offset, sg->length, page_to_phys(sg->page) + sg->offset, sg->length,
&sg->dma_address, 0); &sg->dma_address, 0);

2
include/asm-powerpc/dma-mapping.h
View File

@@ -12,7 +12,7 @@
#include <linux/cache.h> #include <linux/cache.h>
/* need struct page definitions */ /* need struct page definitions */
#include <linux/mm.h> #include <linux/mm.h>
#include <asm/scatterlist.h> #include <linux/scatterlist.h>
#include <asm/io.h> #include <asm/io.h>
#define DMA_ERROR_CODE (~(dma_addr_t)0x0) #define DMA_ERROR_CODE (~(dma_addr_t)0x0)