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charmOS docs

DMA

include/mem/dma.h View source View on GitHub

Structs

Section titled “Structs”

dma_region

Section titled “dma_region”
struct dma_region (3 fields) source
§ iova_t iova

address the device uses

§ void *virt

address the CPU uses

§ size_t size

Functions

Section titled “Functions”

dma_alloc

Section titled “dma_alloc”
struct dma_region dma_alloc(struct device *dev, size_t size)
source

dma_free

Section titled “dma_free”
void dma_free(struct device *dev, struct dma_region region)
source