1#ifndef ___ASM_SPARC_DMA_MAPPING_H 2#define ___ASM_SPARC_DMA_MAPPING_H 3 4#include <linux/scatterlist.h> 5#include <linux/mm.h> 6#include <linux/dma-debug.h> 7 8#define DMA_ERROR_CODE (~(dma_addr_t)0x0) 9 10extern int dma_supported(struct device *dev, u64 mask); 11 12#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) 13#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) 14 15extern struct dma_map_ops *dma_ops, pci32_dma_ops; 16extern struct bus_type pci_bus_type; 17 18static inline struct dma_map_ops *get_dma_ops(struct device *dev) 19{ 20#if defined(CONFIG_SPARC32) && defined(CONFIG_PCI) 21 if (dev->bus == &pci_bus_type) 22 return &pci32_dma_ops; 23#endif 24 return dma_ops; 25} 26 27#include <asm-generic/dma-mapping-common.h> 28 29static inline void *dma_alloc_coherent(struct device *dev, size_t size, 30 dma_addr_t *dma_handle, gfp_t flag) 31{ 32 struct dma_map_ops *ops = get_dma_ops(dev); 33 void *cpu_addr; 34 35 cpu_addr = ops->alloc_coherent(dev, size, dma_handle, flag); 36 debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr); 37 return cpu_addr; 38} 39 40static inline void dma_free_coherent(struct device *dev, size_t size, 41 void *cpu_addr, dma_addr_t dma_handle) 42{ 43 struct dma_map_ops *ops = get_dma_ops(dev); 44 45 debug_dma_free_coherent(dev, size, cpu_addr, dma_handle); 46 ops->free_coherent(dev, size, cpu_addr, dma_handle); 47} 48 49static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) 50{ 51 return (dma_addr == DMA_ERROR_CODE); 52} 53 54static inline int dma_set_mask(struct device *dev, u64 mask) 55{ 56#ifdef CONFIG_PCI 57 if (dev->bus == &pci_bus_type) { 58 if (!dev->dma_mask || !dma_supported(dev, mask)) 59 return -EINVAL; 60 *dev->dma_mask = mask; 61 return 0; 62 } 63#endif 64 return -EINVAL; 65} 66 67#endif 68