diff options
Diffstat (limited to 'arch/powerpc/platforms/ps3/system-bus.c')
| -rw-r--r-- | arch/powerpc/platforms/ps3/system-bus.c | 36 |
1 files changed, 19 insertions, 17 deletions
diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c index a789bf58ca8b..661e9f77ebf6 100644 --- 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, }; /** |