diff options
Diffstat (limited to 'lib/dma.h')
| -rw-r--r-- | lib/dma.h | 23 |
1 files changed, 16 insertions, 7 deletions
@@ -181,6 +181,21 @@ _dma_mark_dirty(const dma_controller_t *dma, const dma_memory_region_t *region, } } +static inline void +dma_init_sg(const dma_controller_t *dma, dma_sg_t *sg, dma_addr_t dma_addr, + uint32_t len, int prot, int region_index) +{ + const dma_memory_region_t *const region = &dma->regions[region_index]; + sg->dma_addr = region->dma_addr; + sg->region = region_index; + sg->offset = dma_addr - region->dma_addr; + sg->length = len; + if (_dma_should_mark_dirty(dma, prot)) { + _dma_mark_dirty(dma, region, sg); + } + sg->mappable = region->virt_addr != NULL; +} + /* 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 * scatter gather regions due to limitations of how memory can be mapped. @@ -207,13 +222,7 @@ dma_addr_to_sg(const dma_controller_t *dma, if (likely(max_sg > 0 && len > 0 && dma_addr >= region->dma_addr && dma_addr + len <= region_end && region_hint < dma->nregions)) { - sg->dma_addr = region->dma_addr; - sg->region = region_hint; - sg->offset = dma_addr - region->dma_addr; - sg->length = len; - if (_dma_should_mark_dirty(dma, prot)) { - _dma_mark_dirty(dma, region, sg); - } + dma_init_sg(dma, sg, dma_addr, len, prot, region_hint); return 1; } // Slow path: search through regions. |