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System | : | Linux MiraNet 3.0.0-14-generic-pae #23-Ubuntu SMP Mon Nov 21 22:07:10 UTC 2011 i686 |
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/
usr/
src/
linux-headers-3.0.0-14/
arch/
sparc/
include/
asm/
- drwxr-xr-x
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Viewing file: dma-mapping.h (1.68 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
#ifndef ___ASM_SPARC_DMA_MAPPING_H #define ___ASM_SPARC_DMA_MAPPING_H
#include <linux/scatterlist.h> #include <linux/mm.h> #include <linux/dma-debug.h>
#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
extern int dma_supported(struct device *dev, u64 mask);
#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 struct dma_map_ops *dma_ops, pci32_dma_ops; extern struct bus_type pci_bus_type;
static inline struct dma_map_ops *get_dma_ops(struct device *dev) { #if defined(CONFIG_SPARC32) && defined(CONFIG_PCI) if (dev->bus == &pci_bus_type) return &pci32_dma_ops; #endif return dma_ops; }
#include <asm-generic/dma-mapping-common.h>
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 *cpu_addr;
cpu_addr = ops->alloc_coherent(dev, size, dma_handle, flag); debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr); return cpu_addr; }
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);
debug_dma_free_coherent(dev, size, cpu_addr, dma_handle); ops->free_coherent(dev, size, cpu_addr, dma_handle); }
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) { return (dma_addr == DMA_ERROR_CODE); }
static inline int dma_set_mask(struct device *dev, u64 mask) { #ifdef CONFIG_PCI if (dev->bus == &pci_bus_type) { if (!dev->dma_mask || !dma_supported(dev, mask)) return -EINVAL; *dev->dma_mask = mask; return 0; } #endif return -EINVAL; }
#endif
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