diff options
author | David Daney <ddaney@caviumnetworks.com> | 2010-10-01 13:27:32 -0700 |
---|---|---|
committer | Ralf Baechle <ralf@linux-mips.org> | 2010-10-29 19:08:31 +0100 |
commit | 48e1fd5a81416a037f5a48120bf281102f2584e2 (patch) | |
tree | c5c4bd344f50493bb1d1c36d485300e9061c5aa2 /arch/mips/include | |
parent | 43e4f7ae4b4a96b5e84f6e1592d2e9353138e88c (diff) | |
download | op-kernel-dev-48e1fd5a81416a037f5a48120bf281102f2584e2.zip op-kernel-dev-48e1fd5a81416a037f5a48120bf281102f2584e2.tar.gz |
MIPS: Convert DMA to use dma-mapping-common.h
Use asm-generic/dma-mapping-common.h to handle all DMA mapping operations
and establish a default get_dma_ops() that forwards all operations to the
existing code.
Augment dev_archdata to carry a pointer to the struct dma_map_ops, allowing
DMA operations to be overridden on a per device basis. Currently this is
never filled in, so the default dma_map_ops are used. A follow-on patch
sets this for Octeon PCI devices.
Also initialize the dma_debug system as it is now used if it is configured.
Includes fixes by Kevin Cernekee <cernekee@gmail.com>.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1637/
Patchwork: http://patchwork.linux-mips.org/patch/1678/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include')
-rw-r--r-- | arch/mips/include/asm/device.h | 15 | ||||
-rw-r--r-- | arch/mips/include/asm/dma-mapping.h | 96 | ||||
-rw-r--r-- | arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h | 2 | ||||
-rw-r--r-- | arch/mips/include/asm/mach-ip27/dma-coherence.h | 3 | ||||
-rw-r--r-- | arch/mips/include/asm/mach-ip32/dma-coherence.h | 3 | ||||
-rw-r--r-- | arch/mips/include/asm/mach-jazz/dma-coherence.h | 3 |
6 files changed, 79 insertions, 43 deletions
diff --git a/arch/mips/include/asm/device.h b/arch/mips/include/asm/device.h index 06746c5..c94fafb 100644 --- a/arch/mips/include/asm/device.h +++ b/arch/mips/include/asm/device.h @@ -3,4 +3,17 @@ * * This file is released under the GPLv2 */ -#include <asm-generic/device.h> +#ifndef _ASM_MIPS_DEVICE_H +#define _ASM_MIPS_DEVICE_H + +struct dma_map_ops; + +struct dev_archdata { + /* DMA operations on that device */ + struct dma_map_ops *dma_ops; +}; + +struct pdev_archdata { +}; + +#endif /* _ASM_MIPS_DEVICE_H*/ diff --git a/arch/mips/include/asm/dma-mapping.h b/arch/mips/include/asm/dma-mapping.h index 18fbf7a..655f849 100644 --- a/arch/mips/include/asm/dma-mapping.h +++ b/arch/mips/include/asm/dma-mapping.h @@ -5,51 +5,41 @@ #include <asm/cache.h> #include <asm-generic/dma-coherent.h> -void *dma_alloc_noncoherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag); +#include <dma-coherence.h> -void dma_free_noncoherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle); +extern struct dma_map_ops *mips_dma_map_ops; -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag); +static inline struct dma_map_ops *get_dma_ops(struct device *dev) +{ + if (dev && dev->archdata.dma_ops) + return dev->archdata.dma_ops; + else + return mips_dma_map_ops; +} -void dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle); +static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) +{ + if (!dev->dma_mask) + return 0; -extern dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction direction); -extern void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, - size_t size, enum dma_data_direction direction); -extern int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction direction); -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) + return addr + size <= *dev->dma_mask; +} + +static inline void dma_mark_clean(void *addr, size_t size) {} + +#include <asm-generic/dma-mapping-common.h> + +static inline int dma_supported(struct device *dev, u64 mask) { - dma_unmap_single(dev, dma_address, size, direction); + struct dma_map_ops *ops = get_dma_ops(dev); + return ops->dma_supported(dev, mask); } -extern void dma_unmap_sg(struct device *dev, struct scatterlist *sg, - int nhwentries, enum dma_data_direction direction); -extern void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, - size_t size, enum dma_data_direction direction); -extern void dma_sync_single_for_device(struct device *dev, - dma_addr_t dma_handle, size_t size, enum dma_data_direction direction); -extern 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); -extern 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); -extern void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, - int nelems, enum dma_data_direction direction); -extern void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, - int nelems, enum dma_data_direction direction); -extern int dma_mapping_error(struct device *dev, dma_addr_t dma_addr); -extern int dma_supported(struct device *dev, u64 mask); +static inline int dma_mapping_error(struct device *dev, u64 mask) +{ + struct dma_map_ops *ops = get_dma_ops(dev); + return ops->mapping_error(dev, mask); +} static inline int dma_set_mask(struct device *dev, u64 mask) @@ -65,4 +55,34 @@ dma_set_mask(struct device *dev, u64 mask) extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction direction); +static inline void *dma_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp) +{ + void *ret; + struct dma_map_ops *ops = get_dma_ops(dev); + + ret = ops->alloc_coherent(dev, size, dma_handle, gfp); + + debug_dma_alloc_coherent(dev, size, *dma_handle, ret); + + return ret; +} + +static inline void dma_free_coherent(struct device *dev, size_t size, + void *vaddr, dma_addr_t dma_handle) +{ + struct dma_map_ops *ops = get_dma_ops(dev); + + ops->free_coherent(dev, size, vaddr, dma_handle); + + debug_dma_free_coherent(dev, size, vaddr, dma_handle); +} + + +void *dma_alloc_noncoherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag); + +void dma_free_noncoherent(struct device *dev, size_t size, + void *vaddr, dma_addr_t dma_handle); + #endif /* _ASM_DMA_MAPPING_H */ diff --git a/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h b/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h index 17d5794..f768f6f 100644 --- a/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h +++ b/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h @@ -27,7 +27,7 @@ static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page) { - return octeon_map_dma_mem(dev, page_address(page), PAGE_SIZE); + BUG(); } static inline unsigned long plat_dma_addr_to_phys(struct device *dev, diff --git a/arch/mips/include/asm/mach-ip27/dma-coherence.h b/arch/mips/include/asm/mach-ip27/dma-coherence.h index 7aa5ef9..016d098 100644 --- a/arch/mips/include/asm/mach-ip27/dma-coherence.h +++ b/arch/mips/include/asm/mach-ip27/dma-coherence.h @@ -26,7 +26,8 @@ static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, return pa; } -static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page) +static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, + struct page *page) { dma_addr_t pa = dev_to_baddr(dev, page_to_phys(page)); diff --git a/arch/mips/include/asm/mach-ip32/dma-coherence.h b/arch/mips/include/asm/mach-ip32/dma-coherence.h index 55123fc..c8fb5aa 100644 --- a/arch/mips/include/asm/mach-ip32/dma-coherence.h +++ b/arch/mips/include/asm/mach-ip32/dma-coherence.h @@ -37,7 +37,8 @@ static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, return pa; } -static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page) +static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, + struct page *page) { dma_addr_t pa; diff --git a/arch/mips/include/asm/mach-jazz/dma-coherence.h b/arch/mips/include/asm/mach-jazz/dma-coherence.h index 2a10920..302101b 100644 --- a/arch/mips/include/asm/mach-jazz/dma-coherence.h +++ b/arch/mips/include/asm/mach-jazz/dma-coherence.h @@ -17,7 +17,8 @@ static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t return vdma_alloc(virt_to_phys(addr), size); } -static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page) +static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, + struct page *page) { return vdma_alloc(page_to_phys(page), PAGE_SIZE); } |