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yaml --- r: 188382 b: refs/heads/master c: 664e87e h: refs/heads/master v: v3
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Vasily Khoruzhick
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Ben Dooks
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Mar 15, 2010
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| Original file line number | Diff line number | Diff line change |
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| @@ -1,2 +1,2 @@ | ||
| --- | ||
| refs/heads/master: 722874465e3cd3268387b96e02220f84b35a8d98 | ||
| refs/heads/master: 664e87e47e086962a832f9a613a8fd4042a02ac1 |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,13 +1,6 @@ | ||
| # kbuild trick to avoid linker error. Can be omitted if a module is built. | ||
| obj- := dummy.o | ||
| CPPFLAGS = -I../../../include | ||
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| # List of programs to build | ||
| hostprogs-y := timestamping | ||
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| # Tell kbuild to always build the programs | ||
| always := $(hostprogs-y) | ||
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| HOSTCFLAGS_timestamping.o += -I$(objtree)/usr/include | ||
| timestamping: timestamping.c | ||
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| clean: | ||
| rm -f timestamping |
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| Original file line number | Diff line number | Diff line change |
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| @@ -1,153 +1 @@ | ||
| /* | ||
| * Implements the generic device dma API for microblaze and the pci | ||
| * | ||
| * Copyright (C) 2009-2010 Michal Simek <monstr@monstr.eu> | ||
| * Copyright (C) 2009-2010 PetaLogix | ||
| * | ||
| * This file is subject to the terms and conditions of the GNU General | ||
| * Public License. See the file COPYING in the main directory of this | ||
| * archive for more details. | ||
| * | ||
| * This file is base on powerpc and x86 dma-mapping.h versions | ||
| * Copyright (C) 2004 IBM | ||
| */ | ||
|
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| #ifndef _ASM_MICROBLAZE_DMA_MAPPING_H | ||
| #define _ASM_MICROBLAZE_DMA_MAPPING_H | ||
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| /* | ||
| * See Documentation/PCI/PCI-DMA-mapping.txt and | ||
| * Documentation/DMA-API.txt for documentation. | ||
| */ | ||
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| #include <linux/types.h> | ||
| #include <linux/cache.h> | ||
| #include <linux/mm.h> | ||
| #include <linux/scatterlist.h> | ||
| #include <linux/dma-debug.h> | ||
| #include <linux/dma-attrs.h> | ||
| #include <asm/io.h> | ||
| #include <asm-generic/dma-coherent.h> | ||
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| #define DMA_ERROR_CODE (~(dma_addr_t)0x0) | ||
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| #define __dma_alloc_coherent(dev, gfp, size, handle) NULL | ||
| #define __dma_free_coherent(size, addr) ((void)0) | ||
| #define __dma_sync(addr, size, rw) ((void)0) | ||
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| static inline unsigned long device_to_mask(struct device *dev) | ||
| { | ||
| if (dev->dma_mask && *dev->dma_mask) | ||
| return *dev->dma_mask; | ||
| /* Assume devices without mask can take 32 bit addresses */ | ||
| return 0xfffffffful; | ||
| } | ||
|
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| extern struct dma_map_ops *dma_ops; | ||
|
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| /* | ||
| * Available generic sets of operations | ||
| */ | ||
| extern struct dma_map_ops dma_direct_ops; | ||
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| static inline struct dma_map_ops *get_dma_ops(struct device *dev) | ||
| { | ||
| /* We don't handle the NULL dev case for ISA for now. We could | ||
| * do it via an out of line call but it is not needed for now. The | ||
| * only ISA DMA device we support is the floppy and we have a hack | ||
| * in the floppy driver directly to get a device for us. | ||
| */ | ||
| if (unlikely(!dev) || !dev->archdata.dma_ops) | ||
| return NULL; | ||
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| return dev->archdata.dma_ops; | ||
| } | ||
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| static inline void set_dma_ops(struct device *dev, struct dma_map_ops *ops) | ||
| { | ||
| dev->archdata.dma_ops = ops; | ||
| } | ||
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| static inline int dma_supported(struct device *dev, u64 mask) | ||
| { | ||
| struct dma_map_ops *ops = get_dma_ops(dev); | ||
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| if (unlikely(!ops)) | ||
| return 0; | ||
| if (!ops->dma_supported) | ||
| return 1; | ||
| return ops->dma_supported(dev, mask); | ||
| } | ||
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| #ifdef CONFIG_PCI | ||
| /* We have our own implementation of pci_set_dma_mask() */ | ||
| #define HAVE_ARCH_PCI_SET_DMA_MASK | ||
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| #endif | ||
|
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| static inline int dma_set_mask(struct device *dev, u64 dma_mask) | ||
| { | ||
| struct dma_map_ops *ops = get_dma_ops(dev); | ||
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| if (unlikely(ops == NULL)) | ||
| return -EIO; | ||
| if (ops->set_dma_mask) | ||
| return ops->set_dma_mask(dev, dma_mask); | ||
| if (!dev->dma_mask || !dma_supported(dev, dma_mask)) | ||
| return -EIO; | ||
| *dev->dma_mask = dma_mask; | ||
| return 0; | ||
| } | ||
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| #include <asm-generic/dma-mapping-common.h> | ||
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| static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) | ||
| { | ||
| struct dma_map_ops *ops = get_dma_ops(dev); | ||
| if (ops->mapping_error) | ||
| return ops->mapping_error(dev, dma_addr); | ||
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| return (dma_addr == DMA_ERROR_CODE); | ||
| } | ||
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| #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) | ||
| #define dma_is_consistent(d, h) (1) | ||
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| static inline void *dma_alloc_coherent(struct device *dev, size_t size, | ||
| dma_addr_t *dma_handle, gfp_t flag) | ||
| { | ||
| struct dma_map_ops *ops = get_dma_ops(dev); | ||
| void *memory; | ||
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| BUG_ON(!ops); | ||
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| memory = ops->alloc_coherent(dev, size, dma_handle, flag); | ||
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| debug_dma_alloc_coherent(dev, size, *dma_handle, memory); | ||
| return memory; | ||
| } | ||
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| static inline void dma_free_coherent(struct device *dev, size_t size, | ||
| void *cpu_addr, dma_addr_t dma_handle) | ||
| { | ||
| struct dma_map_ops *ops = get_dma_ops(dev); | ||
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| BUG_ON(!ops); | ||
| debug_dma_free_coherent(dev, size, cpu_addr, dma_handle); | ||
| ops->free_coherent(dev, size, cpu_addr, dma_handle); | ||
| } | ||
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| static inline int dma_get_cache_alignment(void) | ||
| { | ||
| return L1_CACHE_BYTES; | ||
| } | ||
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| static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, | ||
| enum dma_data_direction direction) | ||
| { | ||
| BUG_ON(direction == DMA_NONE); | ||
| __dma_sync(vaddr, size, (int)direction); | ||
| } | ||
|
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| #endif /* _ASM_MICROBLAZE_DMA_MAPPING_H */ | ||
| #include <asm-generic/dma-mapping-broken.h> |
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