dma-coherent.h revision bca0fa5f12a6744a2b2e53154af65a51402b3426
1ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov#ifndef DMA_COHERENT_H 2ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov#define DMA_COHERENT_H 3ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov 4ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov#ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT 5ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov/* 6bca0fa5f12a6744a2b2e53154af65a51402b3426Marek Szyprowski * These three functions are only for dma allocator. 7ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov * Don't use them in device drivers. 8ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov */ 9ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikovint dma_alloc_from_coherent(struct device *dev, ssize_t size, 10ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov dma_addr_t *dma_handle, void **ret); 11ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikovint dma_release_from_coherent(struct device *dev, int order, void *vaddr); 12ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov 13bca0fa5f12a6744a2b2e53154af65a51402b3426Marek Szyprowskiint dma_mmap_from_coherent(struct device *dev, struct vm_area_struct *vma, 14bca0fa5f12a6744a2b2e53154af65a51402b3426Marek Szyprowski void *cpu_addr, size_t size, int *ret); 15ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov/* 16ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov * Standard interface 17ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov */ 18ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov#define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY 19ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikovextern int 20ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikovdma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr, 21ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov dma_addr_t device_addr, size_t size, int flags); 22ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov 23ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikovextern void 24ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikovdma_release_declared_memory(struct device *dev); 25ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov 26ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikovextern void * 27ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikovdma_mark_declared_memory_occupied(struct device *dev, 28ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov dma_addr_t device_addr, size_t size); 29ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov#else 30ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov#define dma_alloc_from_coherent(dev, size, handle, ret) (0) 31ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov#define dma_release_from_coherent(dev, order, vaddr) (0) 32ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov#endif 33ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov 34ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov#endif 35