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 1988a984ba0795f14a3847edbd7fabe652289ea89bBjorn Helgaasint dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr, 2088a984ba0795f14a3847edbd7fabe652289ea89bBjorn Helgaas dma_addr_t device_addr, size_t size, int flags); 21ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov 2288a984ba0795f14a3847edbd7fabe652289ea89bBjorn Helgaasvoid dma_release_declared_memory(struct device *dev); 23ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov 2488a984ba0795f14a3847edbd7fabe652289ea89bBjorn Helgaasvoid *dma_mark_declared_memory_occupied(struct device *dev, 2588a984ba0795f14a3847edbd7fabe652289ea89bBjorn Helgaas dma_addr_t device_addr, size_t size); 26ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov#else 27ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov#define dma_alloc_from_coherent(dev, size, handle, ret) (0) 28ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov#define dma_release_from_coherent(dev, order, vaddr) (0) 2964ccc9c033c6089b2d426dad3c56477ab066c999Marek Szyprowski#define dma_mmap_from_coherent(dev, vma, vaddr, order, ret) (0) 30ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov#endif 31ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov 32ee7e5516be4f2107535ad5a3d47d9c79f93661a2Dmitry Eremin-Solenikov#endif 33