powerpc: Update remaining dma_mapping_ops to use map/unmap_page

[linux-2.6-omap-h63xx.git] / arch / powerpc / platforms / ps3 / system-bus.c

diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c
index a789bf58ca8b83bb60b98de3d2641cab5b52705c..661e9f77ebf6be4c70d5e013e65be1229cf665cb 100644 (file)
--- a/arch/powerpc/platforms/ps3/system-bus.c
+++ b/arch/powerpc/platforms/ps3/system-bus.c
@@ -555,18 +555,19 @@ static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr,
 }
 
 /* Creates TCEs for a user provided buffer.  The user buffer must be
- * contiguous real kernel storage (not vmalloc).  The address of the buffer
- * passed here is the kernel (virtual) address of the buffer.  The buffer
- * need not be page aligned, the dma_addr_t returned will point to the same
- * byte within the page as vaddr.
+ * contiguous real kernel storage (not vmalloc).  The address passed here
+ * comprises a page address and offset into that page. The dma_addr_t
+ * returned will point to the same byte within the page as was passed in.
  */
 
-static dma_addr_t ps3_sb_map_single(struct device *_dev, void *ptr, size_t size,
-       enum dma_data_direction direction, struct dma_attrs *attrs)
+static dma_addr_t ps3_sb_map_page(struct device *_dev, struct page *page,
+       unsigned long offset, size_t size, enum dma_data_direction direction,
+       struct dma_attrs *attrs)
 {
        struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
        int result;
        unsigned long bus_addr;
+       void *ptr = page_address(page) + offset;
 
        result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
                             &bus_addr,
@@ -580,15 +581,16 @@ static dma_addr_t ps3_sb_map_single(struct device *_dev, void *ptr, size_t size,
        return bus_addr;
 }
 
-static dma_addr_t ps3_ioc0_map_single(struct device *_dev, void *ptr,
-                                     size_t size,
-                                     enum dma_data_direction direction,
-                                     struct dma_attrs *attrs)
+static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page,
+                                   unsigned long offset, size_t size,
+                                   enum dma_data_direction direction,
+                                   struct dma_attrs *attrs)
 {
        struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
        int result;
        unsigned long bus_addr;
        u64 iopte_flag;
+       void *ptr = page_address(page) + offset;
 
        iopte_flag = IOPTE_M;
        switch (direction) {
@@ -615,7 +617,7 @@ static dma_addr_t ps3_ioc0_map_single(struct device *_dev, void *ptr,
        return bus_addr;
 }
 
-static void ps3_unmap_single(struct device *_dev, dma_addr_t dma_addr,
+static void ps3_unmap_page(struct device *_dev, dma_addr_t dma_addr,
        size_t size, enum dma_data_direction direction, struct dma_attrs *attrs)
 {
        struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
@@ -689,21 +691,21 @@ static int ps3_dma_supported(struct device *_dev, u64 mask)
 static struct dma_mapping_ops ps3_sb_dma_ops = {
        .alloc_coherent = ps3_alloc_coherent,
        .free_coherent = ps3_free_coherent,
-       .map_single = ps3_sb_map_single,
-       .unmap_single = ps3_unmap_single,
        .map_sg = ps3_sb_map_sg,
        .unmap_sg = ps3_sb_unmap_sg,
-       .dma_supported = ps3_dma_supported
+       .dma_supported = ps3_dma_supported,
+       .map_page = ps3_sb_map_page,
+       .unmap_page = ps3_unmap_page,
 };
 
 static struct dma_mapping_ops ps3_ioc0_dma_ops = {
        .alloc_coherent = ps3_alloc_coherent,
        .free_coherent = ps3_free_coherent,
-       .map_single = ps3_ioc0_map_single,
-       .unmap_single = ps3_unmap_single,
        .map_sg = ps3_ioc0_map_sg,
        .unmap_sg = ps3_ioc0_unmap_sg,
-       .dma_supported = ps3_dma_supported
+       .dma_supported = ps3_dma_supported,
+       .map_page = ps3_ioc0_map_page,
+       .unmap_page = ps3_unmap_page,
 };
 
 /**