diff options
Diffstat (limited to 'arch/frv')
| -rw-r--r-- | arch/frv/Kconfig | 1 | ||||
| -rw-r--r-- | arch/frv/include/asm/dma-mapping.h | 132 | ||||
| -rw-r--r-- | arch/frv/include/asm/io.h | 17 | ||||
| -rw-r--r-- | arch/frv/mb93090-mb00/pci-dma-nommu.c | 72 | ||||
| -rw-r--r-- | arch/frv/mb93090-mb00/pci-dma.c | 74 |
5 files changed, 113 insertions, 183 deletions
diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig index 03bfd6bf03e7..eefd9a4ed156 100644 --- a/arch/frv/Kconfig +++ b/arch/frv/Kconfig @@ -15,6 +15,7 @@ config FRV select OLD_SIGSUSPEND3 select OLD_SIGACTION select HAVE_DEBUG_STACKOVERFLOW + select ARCH_NO_COHERENT_DMA_MMAP config ZONE_DMA bool diff --git a/arch/frv/include/asm/dma-mapping.h b/arch/frv/include/asm/dma-mapping.h index 2840adcd6d92..9a82bfa4303b 100644 --- a/arch/frv/include/asm/dma-mapping.h +++ b/arch/frv/include/asm/dma-mapping.h @@ -1,128 +1,17 @@ #ifndef _ASM_DMA_MAPPING_H #define _ASM_DMA_MAPPING_H -#include <linux/device.h> -#include <linux/scatterlist.h> #include <asm/cache.h> #include <asm/cacheflush.h> -#include <asm/io.h> - -/* - * See Documentation/DMA-API.txt for the description of how the - * following DMA API should work. - */ - -#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) -#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) extern unsigned long __nongprelbss dma_coherent_mem_start; extern unsigned long __nongprelbss dma_coherent_mem_end; -void *dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp); -void dma_free_coherent(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle); - -extern dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction direction); - -static inline -void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); -} - -extern int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction direction); - -static inline -void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); -} - -extern -dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long offset, - size_t size, enum dma_data_direction direction); - -static inline -void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); -} - - -static inline -void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction) -{ -} - -static inline -void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction) -{ - flush_write_buffers(); -} - -static inline -void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ -} - -static inline -void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - flush_write_buffers(); -} - -static inline -void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, - enum dma_data_direction direction) -{ -} - -static inline -void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, - enum dma_data_direction direction) -{ - flush_write_buffers(); -} - -static inline -int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - return 0; -} - -static inline -int dma_supported(struct device *dev, u64 mask) -{ - /* - * we fall back to GFP_DMA when the mask isn't all 1s, - * so we can't guarantee allocations that must be - * within a tighter range than GFP_DMA.. - */ - if (mask < 0x00ffffff) - return 0; - - return 1; -} +extern struct dma_map_ops frv_dma_ops; -static inline -int dma_set_mask(struct device *dev, u64 mask) +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - if (!dev->dma_mask || !dma_supported(dev, mask)) - return -EIO; - - *dev->dma_mask = mask; - - return 0; + return &frv_dma_ops; } static inline @@ -132,19 +21,4 @@ void dma_cache_sync(struct device *dev, void *vaddr, size_t size, flush_write_buffers(); } -/* Not supported for now */ -static inline int dma_mmap_coherent(struct device *dev, - struct vm_area_struct *vma, void *cpu_addr, - dma_addr_t dma_addr, size_t size) -{ - return -EINVAL; -} - -static inline int dma_get_sgtable(struct device *dev, struct sg_table *sgt, - void *cpu_addr, dma_addr_t dma_addr, - size_t size) -{ - return -EINVAL; -} - #endif /* _ASM_DMA_MAPPING_H */ diff --git a/arch/frv/include/asm/io.h b/arch/frv/include/asm/io.h index 70dfbea8c8d7..8062fc73fad0 100644 --- a/arch/frv/include/asm/io.h +++ b/arch/frv/include/asm/io.h @@ -43,9 +43,20 @@ static inline unsigned long _swapl(unsigned long v) //#define __iormb() asm volatile("membar") //#define __iowmb() asm volatile("membar") -#define __raw_readb __builtin_read8 -#define __raw_readw __builtin_read16 -#define __raw_readl __builtin_read32 +static inline u8 __raw_readb(const volatile void __iomem *addr) +{ + return __builtin_read8((volatile void __iomem *)addr); +} + +static inline u16 __raw_readw(const volatile void __iomem *addr) +{ + return __builtin_read16((volatile void __iomem *)addr); +} + +static inline u32 __raw_readl(const volatile void __iomem *addr) +{ + return __builtin_read32((volatile void __iomem *)addr); +} #define __raw_writeb(datum, addr) __builtin_write8(addr, datum) #define __raw_writew(datum, addr) __builtin_write16(addr, datum) diff --git a/arch/frv/mb93090-mb00/pci-dma-nommu.c b/arch/frv/mb93090-mb00/pci-dma-nommu.c index 8eeea0d77aad..082be49b5df0 100644 --- a/arch/frv/mb93090-mb00/pci-dma-nommu.c +++ b/arch/frv/mb93090-mb00/pci-dma-nommu.c @@ -34,7 +34,8 @@ struct dma_alloc_record { static DEFINE_SPINLOCK(dma_alloc_lock); static LIST_HEAD(dma_alloc_list); -void *dma_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_handle, gfp_t gfp) +static void *frv_dma_alloc(struct device *hwdev, size_t size, dma_addr_t *dma_handle, + gfp_t gfp, struct dma_attrs *attrs) { struct dma_alloc_record *new; struct list_head *this = &dma_alloc_list; @@ -84,9 +85,8 @@ void *dma_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_hand return NULL; } -EXPORT_SYMBOL(dma_alloc_coherent); - -void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle) +static void frv_dma_free(struct device *hwdev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) { struct dma_alloc_record *rec; unsigned long flags; @@ -105,22 +105,9 @@ void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_ BUG(); } -EXPORT_SYMBOL(dma_free_coherent); - -dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); - - frv_cache_wback_inv((unsigned long) ptr, (unsigned long) ptr + size); - - return virt_to_bus(ptr); -} - -EXPORT_SYMBOL(dma_map_single); - -int dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, - enum dma_data_direction direction) +static int frv_dma_map_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) { int i; struct scatterlist *sg; @@ -135,14 +122,49 @@ int dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, return nents; } -EXPORT_SYMBOL(dma_map_sg); - -dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long offset, - size_t size, enum dma_data_direction direction) +static dma_addr_t frv_dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction, struct dma_attrs *attrs) { BUG_ON(direction == DMA_NONE); flush_dcache_page(page); return (dma_addr_t) page_to_phys(page) + offset; } -EXPORT_SYMBOL(dma_map_page); +static void frv_dma_sync_single_for_device(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) +{ + flush_write_buffers(); +} + +static void frv_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sg, int nelems, + enum dma_data_direction direction) +{ + flush_write_buffers(); +} + + +static int frv_dma_supported(struct device *dev, u64 mask) +{ + /* + * we fall back to GFP_DMA when the mask isn't all 1s, + * so we can't guarantee allocations that must be + * within a tighter range than GFP_DMA.. + */ + if (mask < 0x00ffffff) + return 0; + return 1; +} + +struct dma_map_ops frv_dma_ops = { + .alloc = frv_dma_alloc, + .free = frv_dma_free, + .map_page = frv_dma_map_page, + .map_sg = frv_dma_map_sg, + .sync_single_for_device = frv_dma_sync_single_for_device, + .sync_sg_for_device = frv_dma_sync_sg_for_device, + .dma_supported = frv_dma_supported, +}; +EXPORT_SYMBOL(frv_dma_ops); diff --git a/arch/frv/mb93090-mb00/pci-dma.c b/arch/frv/mb93090-mb00/pci-dma.c index 4d1f01dc46e5..316b7b65348d 100644 --- a/arch/frv/mb93090-mb00/pci-dma.c +++ b/arch/frv/mb93090-mb00/pci-dma.c @@ -18,7 +18,9 @@ #include <linux/scatterlist.h> #include <asm/io.h> -void *dma_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_handle, gfp_t gfp) +static void *frv_dma_alloc(struct device *hwdev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, + struct dma_attrs *attrs) { void *ret; @@ -29,29 +31,15 @@ void *dma_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_hand return ret; } -EXPORT_SYMBOL(dma_alloc_coherent); - -void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle) +static void frv_dma_free(struct device *hwdev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) { consistent_free(vaddr); } -EXPORT_SYMBOL(dma_free_coherent); - -dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); - - frv_cache_wback_inv((unsigned long) ptr, (unsigned long) ptr + size); - - return virt_to_bus(ptr); -} - -EXPORT_SYMBOL(dma_map_single); - -int dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, - enum dma_data_direction direction) +static int frv_dma_map_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) { unsigned long dampr2; void *vaddr; @@ -79,14 +67,48 @@ int dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, return nents; } -EXPORT_SYMBOL(dma_map_sg); - -dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long offset, - size_t size, enum dma_data_direction direction) +static dma_addr_t frv_dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction, struct dma_attrs *attrs) { - BUG_ON(direction == DMA_NONE); flush_dcache_page(page); return (dma_addr_t) page_to_phys(page) + offset; } -EXPORT_SYMBOL(dma_map_page); +static void frv_dma_sync_single_for_device(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) +{ + flush_write_buffers(); +} + +static void frv_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sg, int nelems, + enum dma_data_direction direction) +{ + flush_write_buffers(); +} + + +static int frv_dma_supported(struct device *dev, u64 mask) +{ + /* + * we fall back to GFP_DMA when the mask isn't all 1s, + * so we can't guarantee allocations that must be + * within a tighter range than GFP_DMA.. + */ + if (mask < 0x00ffffff) + return 0; + return 1; +} + +struct dma_map_ops frv_dma_ops = { + .alloc = frv_dma_alloc, + .free = frv_dma_free, + .map_page = frv_dma_map_page, + .map_sg = frv_dma_map_sg, + .sync_single_for_device = frv_dma_sync_single_for_device, + .sync_sg_for_device = frv_dma_sync_sg_for_device, + .dma_supported = frv_dma_supported, +}; +EXPORT_SYMBOL(frv_dma_ops); |
