diff options
Diffstat (limited to 'arch/powerpc/platforms/ps3/system-bus.c')
| -rw-r--r-- | arch/powerpc/platforms/ps3/system-bus.c | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c index afbaabf182d0..0537a678a32f 100644 --- a/arch/powerpc/platforms/ps3/system-bus.c +++ b/arch/powerpc/platforms/ps3/system-bus.c @@ -465,7 +465,7 @@ static struct attribute *ps3_system_bus_dev_attrs[] = { }; ATTRIBUTE_GROUPS(ps3_system_bus_dev); -static struct bus_type ps3_system_bus_type = { +static const struct bus_type ps3_system_bus_type = { .name = "ps3_system_bus", .match = ps3_system_bus_match, .uevent = ps3_system_bus_uevent, @@ -551,18 +551,20 @@ 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 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. + * is physical address to that hat 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_page(struct device *_dev, struct page *page, - unsigned long offset, size_t size, enum dma_data_direction direction, - unsigned long attrs) +static dma_addr_t ps3_sb_map_phys(struct device *_dev, phys_addr_t phys, + size_t size, enum dma_data_direction direction, unsigned long attrs) { struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); int result; dma_addr_t bus_addr; - void *ptr = page_address(page) + offset; + void *ptr = phys_to_virt(phys); + + if (unlikely(attrs & DMA_ATTR_MMIO)) + return DMA_MAPPING_ERROR; result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, &bus_addr, @@ -577,8 +579,8 @@ static dma_addr_t ps3_sb_map_page(struct device *_dev, struct page *page, return bus_addr; } -static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page, - unsigned long offset, size_t size, +static dma_addr_t ps3_ioc0_map_phys(struct device *_dev, phys_addr_t phys, + size_t size, enum dma_data_direction direction, unsigned long attrs) { @@ -586,7 +588,10 @@ static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page, int result; dma_addr_t bus_addr; u64 iopte_flag; - void *ptr = page_address(page) + offset; + void *ptr = phys_to_virt(phys); + + if (unlikely(attrs & DMA_ATTR_MMIO)) + return DMA_MAPPING_ERROR; iopte_flag = CBE_IOPTE_M; switch (direction) { @@ -613,7 +618,7 @@ static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page, return bus_addr; } -static void ps3_unmap_page(struct device *_dev, dma_addr_t dma_addr, +static void ps3_unmap_phys(struct device *_dev, dma_addr_t dma_addr, size_t size, enum dma_data_direction direction, unsigned long attrs) { struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); @@ -690,8 +695,8 @@ static const struct dma_map_ops ps3_sb_dma_ops = { .map_sg = ps3_sb_map_sg, .unmap_sg = ps3_sb_unmap_sg, .dma_supported = ps3_dma_supported, - .map_page = ps3_sb_map_page, - .unmap_page = ps3_unmap_page, + .map_phys = ps3_sb_map_phys, + .unmap_phys = ps3_unmap_phys, .mmap = dma_common_mmap, .get_sgtable = dma_common_get_sgtable, .alloc_pages_op = dma_common_alloc_pages, @@ -704,8 +709,8 @@ static const struct dma_map_ops ps3_ioc0_dma_ops = { .map_sg = ps3_ioc0_map_sg, .unmap_sg = ps3_ioc0_unmap_sg, .dma_supported = ps3_dma_supported, - .map_page = ps3_ioc0_map_page, - .unmap_page = ps3_unmap_page, + .map_phys = ps3_ioc0_map_phys, + .unmap_phys = ps3_unmap_phys, .mmap = dma_common_mmap, .get_sgtable = dma_common_get_sgtable, .alloc_pages_op = dma_common_alloc_pages, |