diff options
| author | Philippe Mathieu-Daudé <philmd@redhat.com> | 2021-12-31 11:51:52 +0100 |
|---|---|---|
| committer | Philippe Mathieu-Daudé <f4bug@amsat.org> | 2022-01-18 10:45:35 +0100 |
| commit | 1efc6b319cfab73176412d86fa8f3702ed30c867 (patch) | |
| tree | 3a327a63cc56c2cefa5f4775c483bf465c9bd705 /include/hw/pci | |
| parent | e0431aafc48ed0bea934148fb7266dbe36ef7685 (diff) | |
hw/pci: Document pci_dma_map()
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220111184309.28637-5-f4bug@amsat.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Diffstat (limited to 'include/hw/pci')
| -rw-r--r-- | include/hw/pci/pci.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index 483d5c7c72..023abc0f79 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -881,6 +881,18 @@ PCI_DMA_DEFINE_LDST(q_be, q_be, 64); #undef PCI_DMA_DEFINE_LDST +/** + * pci_dma_map: Map device PCI address space range into host virtual address + * @dev: #PCIDevice to be accessed + * @addr: address within that device's address space + * @plen: pointer to length of buffer; updated on return to indicate + * if only a subset of the requested range has been mapped + * @dir: indicates the transfer direction + * + * Return: A host pointer, or %NULL if the resources needed to + * perform the mapping are exhausted (in that case *@plen + * is set to zero). + */ static inline void *pci_dma_map(PCIDevice *dev, dma_addr_t addr, dma_addr_t *plen, DMADirection dir) { |