diff options
| -rw-r--r-- | include/hw/pci/pci.h | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index 72ce649eee..37ffd73708 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -781,8 +781,22 @@ static inline AddressSpace *pci_get_address_space(PCIDevice *dev) return &dev->bus_master_as; } -static inline int pci_dma_rw(PCIDevice *dev, dma_addr_t addr, - void *buf, dma_addr_t len, DMADirection dir) +/** + * pci_dma_rw: Read from or write to an address space from PCI device. + * + * Return a MemTxResult indicating whether the operation succeeded + * or failed (eg unassigned memory, device rejected the transaction, + * IOMMU fault). + * + * @dev: #PCIDevice doing the memory access + * @addr: address within the #PCIDevice address space + * @buf: buffer with the data transferred + * @len: the number of bytes to read or write + * @dir: indicates the transfer direction + */ +static inline MemTxResult pci_dma_rw(PCIDevice *dev, dma_addr_t addr, + void *buf, dma_addr_t len, + DMADirection dir) { return dma_memory_rw(pci_get_address_space(dev), addr, buf, len, dir); } |