diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c index f030f0775be7d11016d14ed4add82c16be38d254..734ac9135998d9efffb0a1b84c3a82416b31d325 100644 --- a/arch/arm/common/dmabounce.c +++ b/arch/arm/common/dmabounce.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include @@ -349,6 +350,12 @@ dma_addr_t dma_map_page(struct device *dev, struct page *page, BUG_ON(!valid_dma_direction(dir)); + if (PageHighMem(page)) { + dev_err(dev, "DMA buffer bouncing of HIGHMEM pages " + "is not supported\n"); + return ~0; + } + return map_single(dev, page_address(page) + offset, size, dir); } EXPORT_SYMBOL(dma_map_page); diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h index 59fa762e9c66f66d7cdde3f4a9beebc3e4faba92..ff46dfa68a97f99c3c3db8854dac35d31b062dbd 100644 --- a/arch/arm/include/asm/dma-mapping.h +++ b/arch/arm/include/asm/dma-mapping.h @@ -15,10 +15,20 @@ * must not be used by drivers. */ #ifndef __arch_page_to_dma + +#if !defined(CONFIG_HIGHMEM) static inline dma_addr_t page_to_dma(struct device *dev, struct page *page) { return (dma_addr_t)__virt_to_bus((unsigned long)page_address(page)); } +#elif defined(__pfn_to_bus) +static inline dma_addr_t page_to_dma(struct device *dev, struct page *page) +{ + return (dma_addr_t)__pfn_to_bus(page_to_pfn(page)); +} +#else +#error "this machine class needs to define __arch_page_to_dma to use HIGHMEM" +#endif static inline void *dma_to_virt(struct device *dev, dma_addr_t addr) { diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h index ae472bc376d3fee167ea761995cbed3f1dcc24ab..85763db87449f4f4c62947e30a2b6b0cf9a43e9e 100644 --- a/arch/arm/include/asm/memory.h +++ b/arch/arm/include/asm/memory.h @@ -188,6 +188,7 @@ static inline void *phys_to_virt(unsigned long x) #ifndef __virt_to_bus #define __virt_to_bus __virt_to_phys #define __bus_to_virt __phys_to_virt +#define __pfn_to_bus(x) ((x) << PAGE_SHIFT) #endif static inline __deprecated unsigned long virt_to_bus(void *x) diff --git a/arch/arm/mach-iop13xx/include/mach/memory.h b/arch/arm/mach-iop13xx/include/mach/memory.h index e012bf13c95582d2a4a8b4fd5368dd2fa380097a..42ae29b288a1a93155da39ec4e823fca734fba2e 100644 --- a/arch/arm/mach-iop13xx/include/mach/memory.h +++ b/arch/arm/mach-iop13xx/include/mach/memory.h @@ -59,7 +59,10 @@ static inline unsigned long __lbus_to_virt(dma_addr_t x) }) #define __arch_page_to_dma(dev, page) \ - __arch_virt_to_dma(dev, page_address(page)) + ({ \ + /* __is_lbus_virt() can never be true for RAM pages */ \ + (dma_addr_t)page_to_phys(page); \ + }) #endif /* CONFIG_ARCH_IOP13XX */ #endif /* !ASSEMBLY */ diff --git a/arch/arm/mach-ks8695/include/mach/memory.h b/arch/arm/mach-ks8695/include/mach/memory.h index 6d5887cf574286512c4321b668fdce3bc15d44cd..76e5308685a40e81e45dcc42c66312ef3e0f4d1f 100644 --- a/arch/arm/mach-ks8695/include/mach/memory.h +++ b/arch/arm/mach-ks8695/include/mach/memory.h @@ -35,7 +35,11 @@ extern struct bus_type platform_bus_type; __phys_to_virt(x) : __bus_to_virt(x)); }) #define __arch_virt_to_dma(dev, x) ({ is_lbus_device(dev) ? \ (dma_addr_t)__virt_to_phys(x) : (dma_addr_t)__virt_to_bus(x); }) -#define __arch_page_to_dma(dev, x) __arch_virt_to_dma(dev, page_address(x)) +#define __arch_page_to_dma(dev, x) \ + ({ dma_addr_t __dma = page_to_phys(page); \ + if (!is_lbus_device(dev)) \ + __dma = __dma - PHYS_OFFSET + KS8695_PCIMEM_PA; \ + __dma; }) #endif diff --git a/arch/arm/plat-omap/include/mach/memory.h b/arch/arm/plat-omap/include/mach/memory.h index d6b5ca6c7da20bf7790cd8497616aa1d6f4cc66f..99ed564d92774fe3d91e67f43a479ef6a21198d8 100644 --- a/arch/arm/plat-omap/include/mach/memory.h +++ b/arch/arm/plat-omap/include/mach/memory.h @@ -61,9 +61,11 @@ #define lbus_to_virt(x) ((x) - OMAP1510_LB_OFFSET + PAGE_OFFSET) #define is_lbus_device(dev) (cpu_is_omap15xx() && dev && (strncmp(dev_name(dev), "ohci", 4) == 0)) -#define __arch_page_to_dma(dev, page) ({is_lbus_device(dev) ? \ - (dma_addr_t)virt_to_lbus(page_address(page)) : \ - (dma_addr_t)__virt_to_phys(page_address(page));}) +#define __arch_page_to_dma(dev, page) \ + ({ dma_addr_t __dma = page_to_phys(page); \ + if (is_lbus_device(dev)) \ + __dma = __dma - PHYS_OFFSET + OMAP1510_LB_OFFSET; \ + __dma; }) #define __arch_dma_to_virt(dev, addr) ({ (void *) (is_lbus_device(dev) ? \ lbus_to_virt(addr) : \