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[PATCH v2 3/9] hw/pci: Document pci_dma_map()
From: |
Philippe Mathieu-Daudé |
Subject: |
[PATCH v2 3/9] hw/pci: Document pci_dma_map() |
Date: |
Tue, 4 Jan 2022 09:54:25 +0100 |
From: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
include/hw/pci/pci.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
index 5b36334a28a..07f08aa0626 100644
--- a/include/hw/pci/pci.h
+++ b/include/hw/pci/pci.h
@@ -876,6 +876,18 @@ 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
+ *
+ * May map a subset of the requested range, given by and returned in @plen.
+ * May return %NULL and set *@plen to zero(0), if resources needed to perform
+ * the mapping are exhausted.
+ *
+ * @dev: #PCIDevice to be accessed
+ * @addr: address within that device's address space
+ * @plen: pointer to length of buffer; updated on return
+ * @dir: indicates the transfer direction
+ */
static inline void *pci_dma_map(PCIDevice *dev, dma_addr_t addr,
dma_addr_t *plen, DMADirection dir)
{
--
2.33.1
- [PATCH v2 0/9] hw/dma: Use dma_addr_t type definition when relevant, Philippe Mathieu-Daudé, 2022/01/04
- [PATCH v2 1/9] hw/nvram: Restrict stub to sysemu and tools, Philippe Mathieu-Daudé, 2022/01/04
- [PATCH v2 2/9] hw/pci: Restrict pci-bus stub to sysemu, Philippe Mathieu-Daudé, 2022/01/04
- [PATCH v2 3/9] hw/pci: Document pci_dma_map(),
Philippe Mathieu-Daudé <=
- [PATCH v2 4/9] hw/dma: Remove CONFIG_USER_ONLY check, Philippe Mathieu-Daudé, 2022/01/04
- [PATCH v2 5/9] hw/rdma/rdma_utils: Rename rdma_pci_dma_map 'len' argument, Philippe Mathieu-Daudé, 2022/01/04
- [PATCH v2 6/9] hw/scsi: Rename SCSIRequest::resid as 'residual', Philippe Mathieu-Daudé, 2022/01/04