diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/microblaze/include/asm/io.h | 3 | ||||
| -rw-r--r-- | arch/microblaze/include/asm/page.h | 12 | ||||
| -rw-r--r-- | arch/microblaze/kernel/dma.c | 18 |
3 files changed, 17 insertions, 16 deletions
diff --git a/arch/microblaze/include/asm/io.h b/arch/microblaze/include/asm/io.h index 06d804b15a5..32d621a56ae 100644 --- a/arch/microblaze/include/asm/io.h +++ b/arch/microblaze/include/asm/io.h @@ -140,9 +140,6 @@ static inline void writel(unsigned int v, volatile void __iomem *addr) #define virt_to_phys(addr) ((unsigned long)__virt_to_phys(addr)) #define virt_to_bus(addr) ((unsigned long)__virt_to_phys(addr)) -#define __page_address(page) \ - (PAGE_OFFSET + (((page) - mem_map) << PAGE_SHIFT)) -#define page_to_phys(page) virt_to_phys((void *)__page_address(page)) #define page_to_bus(page) (page_to_phys(page)) #define bus_to_virt(addr) (phys_to_virt(addr)) diff --git a/arch/microblaze/include/asm/page.h b/arch/microblaze/include/asm/page.h index 9b66c0fa9a3..2dd1d04129e 100644 --- a/arch/microblaze/include/asm/page.h +++ b/arch/microblaze/include/asm/page.h @@ -62,12 +62,6 @@ extern unsigned int __page_offset; #define PAGE_OFFSET CONFIG_KERNEL_START /* - * MAP_NR -- given an address, calculate the index of the page struct which - * points to the address's page. - */ -#define MAP_NR(addr) (((unsigned long)(addr) - PAGE_OFFSET) >> PAGE_SHIFT) - -/* * The basic type of a PTE - 32 bit physical addressing. */ typedef unsigned long pte_basic_t; @@ -154,7 +148,11 @@ extern int page_is_ram(unsigned long pfn); # define pfn_to_virt(pfn) __va(pfn_to_phys((pfn))) # ifdef CONFIG_MMU -# define virt_to_page(kaddr) (mem_map + MAP_NR(kaddr)) + +# define virt_to_page(kaddr) (pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)) +# define page_to_virt(page) __va(page_to_pfn(page) << PAGE_SHIFT) +# define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) + # else /* CONFIG_MMU */ # define virt_to_page(vaddr) (pfn_to_page(virt_to_pfn(vaddr))) # define page_to_virt(page) (pfn_to_virt(page_to_pfn(page))) diff --git a/arch/microblaze/kernel/dma.c b/arch/microblaze/kernel/dma.c index 64bc39f40ba..f230a8de0bc 100644 --- a/arch/microblaze/kernel/dma.c +++ b/arch/microblaze/kernel/dma.c @@ -21,10 +21,10 @@ * default the offset is PCI_DRAM_OFFSET. */ -static inline void __dma_sync_page(void *vaddr, unsigned long offset, +static inline void __dma_sync_page(void *paddr, unsigned long offset, size_t size, enum dma_data_direction direction) { - unsigned long start = virt_to_phys(vaddr); + unsigned long start = (unsigned long)paddr; switch (direction) { case DMA_TO_DEVICE: @@ -79,10 +79,12 @@ static int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl, struct scatterlist *sg; int i; + /* FIXME this part of code is untested */ for_each_sg(sgl, sg, nents, i) { sg->dma_address = sg_phys(sg) + get_dma_direct_offset(dev); sg->dma_length = sg->length; - __dma_sync_page(sg_page(sg), sg->offset, sg->length, direction); + __dma_sync_page(page_to_phys(sg_page(sg)), sg->offset, + sg->length, direction); } return nents; @@ -107,7 +109,7 @@ static inline dma_addr_t dma_direct_map_page(struct device *dev, struct dma_attrs *attrs) { BUG_ON(direction == DMA_NONE); - __dma_sync_page(page, offset, size, direction); + __dma_sync_page(page_to_phys(page), offset, size, direction); return page_to_phys(page) + offset + get_dma_direct_offset(dev); } @@ -117,8 +119,12 @@ static inline void dma_direct_unmap_page(struct device *dev, enum dma_data_direction direction, struct dma_attrs *attrs) { -/* There is not necessary to do cache cleanup */ - /* __dma_sync_page(dma_address, 0 , size, direction); */ +/* There is not necessary to do cache cleanup + * + * phys_to_virt is here because in __dma_sync_page is __virt_to_phys and + * dma_address is physical address + */ + __dma_sync_page((void *)dma_address, 0 , size, direction); } struct dma_map_ops dma_direct_ops = { |