Revision b90600ee dma.h
| b/dma.h | ||
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#define DMA_H |
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#include <stdio.h> |
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#include "memory.h" |
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#include "hw/hw.h" |
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#include "block.h" |
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#include "kvm.h" |
| ... | ... | |
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dma_addr_t access_len); |
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struct DMAContext {
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AddressSpace *as; |
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DMATranslateFunc *translate; |
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DMAMapFunc *map; |
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DMAUnmapFunc *unmap; |
| ... | ... | |
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static inline bool dma_has_iommu(DMAContext *dma) |
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{
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return !!dma;
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return dma && dma->translate;
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} |
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/* Checks that the given range of addresses is valid for DMA. This is |
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{
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if (!dma_has_iommu(dma)) {
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/* Fast-path for no IOMMU */ |
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cpu_physical_memory_rw(addr, buf, len, |
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dir == DMA_DIRECTION_FROM_DEVICE); |
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address_space_rw(dma->as, addr, buf, len, dir == DMA_DIRECTION_FROM_DEVICE); |
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return 0; |
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} else {
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return iommu_dma_memory_rw(dma, addr, buf, len, dir); |
| ... | ... | |
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target_phys_addr_t xlen = *len; |
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void *p; |
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p = cpu_physical_memory_map(addr, &xlen, |
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dir == DMA_DIRECTION_FROM_DEVICE); |
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p = address_space_map(dma->as, addr, &xlen, dir == DMA_DIRECTION_FROM_DEVICE); |
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*len = xlen; |
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return p; |
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} else {
|
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DMADirection dir, dma_addr_t access_len) |
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{
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if (!dma_has_iommu(dma)) {
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cpu_physical_memory_unmap(buffer, (target_phys_addr_t)len, |
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dir == DMA_DIRECTION_FROM_DEVICE, |
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access_len); |
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address_space_unmap(dma->as, buffer, (target_phys_addr_t)len, |
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dir == DMA_DIRECTION_FROM_DEVICE, access_len); |
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} else {
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iommu_dma_memory_unmap(dma, buffer, len, dir, access_len); |
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} |
| ... | ... | |
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#undef DEFINE_LDST_DMA |
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void dma_context_init(DMAContext *dma, DMATranslateFunc translate, |
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void dma_context_init(DMAContext *dma, AddressSpace *as, DMATranslateFunc translate,
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DMAMapFunc map, DMAUnmapFunc unmap); |
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struct ScatterGatherEntry {
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