diff options
Diffstat (limited to 'lib/dma.h')
| -rw-r--r-- | lib/dma.h | 51 |
1 files changed, 29 insertions, 22 deletions
@@ -100,8 +100,11 @@ typedef struct { dma_memory_region_t regions[0]; } dma_controller_t; -dma_controller_t *dma_controller_create(int max_regions); -void dma_controller_destroy(lm_ctx_t * const ctx, dma_controller_t * dma); +dma_controller_t * +dma_controller_create(int max_regions); + +void +dma_controller_destroy(lm_ctx_t *ctx, dma_controller_t *dma); /* Registers a new memory region. * Returns: @@ -110,17 +113,20 @@ void dma_controller_destroy(lm_ctx_t * const ctx, dma_controller_t * dma); * where this region would have been mapped to if the call could succeed * (e.g. due to conflict with existing region). */ -int dma_controller_add_region(lm_ctx_t * const ctx, dma_controller_t * dma, - dma_addr_t dma_addr, size_t size, - int fd, off_t offset); +int +dma_controller_add_region(lm_ctx_t *ctx, dma_controller_t *dma, + dma_addr_t dma_addr, size_t size, + int fd, off_t offset); -int dma_controller_remove_region(dma_controller_t * dma, dma_addr_t dma_addr, - size_t size, int fd); +int +dma_controller_remove_region(dma_controller_t *dma, dma_addr_t dma_addr, + size_t size, int fd); // Helper for dma_addr_to_sg() slow path. -int _dma_addr_sg_split(lm_ctx_t * const ctx, const dma_controller_t * dma, - dma_addr_t dma_addr, uint32_t len, - dma_sg_t * sg, int max_sg); +int +_dma_addr_sg_split(lm_ctx_t *ctx, const dma_controller_t *dma, + dma_addr_t dma_addr, uint32_t len, + dma_sg_t *sg, int max_sg); /* Takes a linear dma address span and returns a sg list suitable for DMA. * A single linear dma address span may need to be split into multiple @@ -134,9 +140,9 @@ int _dma_addr_sg_split(lm_ctx_t * const ctx, const dma_controller_t * dma, * necessary to complete this request. */ static inline int -dma_addr_to_sg(lm_ctx_t * const ctx, const dma_controller_t * dma, +dma_addr_to_sg(lm_ctx_t *ctx, const dma_controller_t *dma, dma_addr_t dma_addr, uint32_t len, - dma_sg_t * sg, int max_sg) + dma_sg_t *sg, int max_sg) { static __thread int region_hint; int cnt; @@ -160,15 +166,16 @@ dma_addr_to_sg(lm_ctx_t * const ctx, const dma_controller_t * dma, return cnt; } -void *dma_map_region(dma_memory_region_t * region, int prot, - size_t offset, size_t len); +void * +dma_map_region(dma_memory_region_t *region, int prot, + size_t offset, size_t len); -void dma_unmap_region(dma_memory_region_t * region, - void *virt_addr, size_t len); +void +dma_unmap_region(dma_memory_region_t *region, void *virt_addr, size_t len); static inline int -dma_map_sg(dma_controller_t * dma, int prot, - const dma_sg_t * sg, struct iovec *iov, int cnt) +dma_map_sg(dma_controller_t *dma, int prot, + const dma_sg_t *sg, struct iovec *iov, int cnt) { int i; @@ -191,8 +198,8 @@ dma_map_sg(dma_controller_t * dma, int prot, } static inline void -dma_unmap_sg(dma_controller_t * dma, - const dma_sg_t * sg, struct iovec *iov, int cnt) +dma_unmap_sg(dma_controller_t *dma, + const dma_sg_t *sg, struct iovec *iov, int cnt) { int i; @@ -205,7 +212,7 @@ dma_unmap_sg(dma_controller_t * dma, } static inline void * -dma_map_addr(lm_ctx_t * const ctx, dma_controller_t * dma, int prot, +dma_map_addr(lm_ctx_t *ctx, dma_controller_t *dma, int prot, dma_addr_t dma_addr, uint32_t len) { dma_sg_t sg; @@ -220,7 +227,7 @@ dma_map_addr(lm_ctx_t * const ctx, dma_controller_t * dma, int prot, } static inline void -dma_unmap_addr(lm_ctx_t * const ctx, dma_controller_t * dma, +dma_unmap_addr(lm_ctx_t *ctx, dma_controller_t *dma, dma_addr_t dma_addr, uint32_t len, void *addr) { dma_sg_t sg; |