diff options
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/Kconfig | 1 | ||||
| -rw-r--r-- | arch/mips/include/asm/page.h | 3 | ||||
| -rw-r--r-- | arch/mips/jazz/jazzdma.c | 6 | ||||
| -rw-r--r-- | arch/mips/mm/cache.c | 2 | ||||
| -rw-r--r-- | arch/mips/mm/dma-noncoherent.c | 26 |
5 files changed, 10 insertions, 28 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 7957d3457156..d50fafd7bf3a 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1121,6 +1121,7 @@ config DMA_NONCOHERENT bool select ARCH_HAS_DMA_MMAP_PGPROT select ARCH_HAS_SYNC_DMA_FOR_DEVICE + select ARCH_HAS_UNCACHED_SEGMENT select NEED_DMA_MAP_STATE select ARCH_HAS_DMA_COHERENT_TO_PFN select DMA_NONCOHERENT_CACHE_SYNC diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h index a25643d258cb..0ba4ce6e2bf3 100644 --- a/arch/mips/include/asm/page.h +++ b/arch/mips/include/asm/page.h @@ -258,9 +258,6 @@ extern bool __virt_addr_valid(const volatile void *kaddr); ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) -#define UNCAC_ADDR(addr) (UNCAC_BASE + __pa(addr)) -#define CAC_ADDR(addr) ((unsigned long)__va((addr) - UNCAC_BASE)) - #include <asm-generic/memory_model.h> #include <asm-generic/getorder.h> diff --git a/arch/mips/jazz/jazzdma.c b/arch/mips/jazz/jazzdma.c index bedb5047aff3..1804dc9d8136 100644 --- a/arch/mips/jazz/jazzdma.c +++ b/arch/mips/jazz/jazzdma.c @@ -575,10 +575,6 @@ static void *jazz_dma_alloc(struct device *dev, size_t size, return NULL; } - if (!(attrs & DMA_ATTR_NON_CONSISTENT)) { - dma_cache_wback_inv((unsigned long)ret, size); - ret = (void *)UNCAC_ADDR(ret); - } return ret; } @@ -586,8 +582,6 @@ static void jazz_dma_free(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle, unsigned long attrs) { vdma_free(dma_handle); - if (!(attrs & DMA_ATTR_NON_CONSISTENT)) - vaddr = (void *)CAC_ADDR((unsigned long)vaddr); dma_direct_free_pages(dev, size, vaddr, dma_handle, attrs); } diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c index 3da216988672..33b409391ddb 100644 --- a/arch/mips/mm/cache.c +++ b/arch/mips/mm/cache.c @@ -62,8 +62,6 @@ void (*_dma_cache_wback_inv)(unsigned long start, unsigned long size); void (*_dma_cache_wback)(unsigned long start, unsigned long size); void (*_dma_cache_inv)(unsigned long start, unsigned long size); -EXPORT_SYMBOL(_dma_cache_wback_inv); - #endif /* CONFIG_DMA_NONCOHERENT */ /* diff --git a/arch/mips/mm/dma-noncoherent.c b/arch/mips/mm/dma-noncoherent.c index f9549d2fbea3..ed56c6fa7be2 100644 --- a/arch/mips/mm/dma-noncoherent.c +++ b/arch/mips/mm/dma-noncoherent.c @@ -44,33 +44,25 @@ static inline bool cpu_needs_post_dma_flush(struct device *dev) } } -void *arch_dma_alloc(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs) +void arch_dma_prep_coherent(struct page *page, size_t size) { - void *ret; - - ret = dma_direct_alloc_pages(dev, size, dma_handle, gfp, attrs); - if (ret && !(attrs & DMA_ATTR_NON_CONSISTENT)) { - dma_cache_wback_inv((unsigned long) ret, size); - ret = (void *)UNCAC_ADDR(ret); - } + dma_cache_wback_inv((unsigned long)page_address(page), size); +} - return ret; +void *uncached_kernel_address(void *addr) +{ + return (void *)(__pa(addr) + UNCAC_BASE); } -void arch_dma_free(struct device *dev, size_t size, void *cpu_addr, - dma_addr_t dma_addr, unsigned long attrs) +void *cached_kernel_address(void *addr) { - if (!(attrs & DMA_ATTR_NON_CONSISTENT)) - cpu_addr = (void *)CAC_ADDR((unsigned long)cpu_addr); - dma_direct_free_pages(dev, size, cpu_addr, dma_addr, attrs); + return __va(addr) - UNCAC_BASE; } long arch_dma_coherent_to_pfn(struct device *dev, void *cpu_addr, dma_addr_t dma_addr) { - unsigned long addr = CAC_ADDR((unsigned long)cpu_addr); - return page_to_pfn(virt_to_page((void *)addr)); + return page_to_pfn(virt_to_page(cached_kernel_address(cpu_addr))); } pgprot_t arch_dma_mmap_pgprot(struct device *dev, pgprot_t prot, |