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authorMark Nelson <markn@au1.ibm.com>2008-07-04 21:05:41 +0200
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-07-09 08:30:43 +0200
commitc8692362db3db3a6f644e05a477161d967430aac (patch)
treeb240cfe972dda9768fc330458da5667a7c15864f
parentpowerpc/spufs: add atomic busy_spus counter to struct cbe_spu_info (diff)
downloadlinux-c8692362db3db3a6f644e05a477161d967430aac.tar.xz
linux-c8692362db3db3a6f644e05a477161d967430aac.zip
powerpc/dma: Add struct iommu_table argument to iommu_map_sg()
Make iommu_map_sg take a struct iommu_table. It did so before commit 740c3ce66700640a6e6136ff679b067e92125794 (iommu sg merging: ppc: make iommu respect the segment size limits). This stops the function looking in the archdata.dma_data for the iommu table because in the future it will be called with a device that has no table there. This also has the nice side effect of making iommu_map_sg() match the other map functions. Signed-off-by: Mark Nelson <markn@au1.ibm.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-rw-r--r--arch/powerpc/kernel/dma_64.c2
-rw-r--r--arch/powerpc/kernel/iommu.c7
-rw-r--r--include/asm-powerpc/iommu.h6
3 files changed, 7 insertions, 8 deletions
diff --git a/arch/powerpc/kernel/dma_64.c b/arch/powerpc/kernel/dma_64.c
index 3a317cb0636a..739744508c6e 100644
--- a/arch/powerpc/kernel/dma_64.c
+++ b/arch/powerpc/kernel/dma_64.c
@@ -68,7 +68,7 @@ static void dma_iommu_unmap_single(struct device *dev, dma_addr_t dma_handle,
static int dma_iommu_map_sg(struct device *dev, struct scatterlist *sglist,
int nelems, enum dma_data_direction direction)
{
- return iommu_map_sg(dev, sglist, nelems,
+ return iommu_map_sg(dev, dev->archdata.dma_data, sglist, nelems,
device_to_mask(dev), direction);
}
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 0c663669bc32..ccf00fe9cee6 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -267,11 +267,10 @@ static void iommu_free(struct iommu_table *tbl, dma_addr_t dma_addr,
spin_unlock_irqrestore(&(tbl->it_lock), flags);
}
-int iommu_map_sg(struct device *dev, struct scatterlist *sglist,
- int nelems, unsigned long mask,
- enum dma_data_direction direction)
+int iommu_map_sg(struct device *dev, struct iommu_table *tbl,
+ struct scatterlist *sglist, int nelems,
+ unsigned long mask, enum dma_data_direction direction)
{
- struct iommu_table *tbl = dev->archdata.dma_data;
dma_addr_t dma_next = 0, dma_addr;
unsigned long flags;
struct scatterlist *s, *outs, *segstart;
diff --git a/include/asm-powerpc/iommu.h b/include/asm-powerpc/iommu.h
index 852e15f51a1e..65f6682bee87 100644
--- a/include/asm-powerpc/iommu.h
+++ b/include/asm-powerpc/iommu.h
@@ -79,9 +79,9 @@ extern void iommu_free_table(struct iommu_table *tbl, const char *node_name);
extern struct iommu_table *iommu_init_table(struct iommu_table * tbl,
int nid);
-extern int iommu_map_sg(struct device *dev, struct scatterlist *sglist,
- int nelems, unsigned long mask,
- enum dma_data_direction direction);
+extern int iommu_map_sg(struct device *dev, struct iommu_table *tbl,
+ struct scatterlist *sglist, int nelems,
+ unsigned long mask, enum dma_data_direction direction);
extern void iommu_unmap_sg(struct iommu_table *tbl, struct scatterlist *sglist,
int nelems, enum dma_data_direction direction);