xiaoxiang781216 commented on code in PR #16767:
URL: https://github.com/apache/nuttx/pull/16767#discussion_r2230353127
##########
include/nuttx/pci/pci_epc.h:
##########
@@ -852,4 +855,63 @@ FAR void *pci_epc_mem_alloc_addr(FAR struct pci_epc_ctrl_s
*epc,
void pci_epc_mem_free_addr(FAR struct pci_epc_ctrl_s *epc,
uintptr_t phys_addr, size_t size);
+/****************************************************************************
+ * Name: pci_epc_dma_alloc
+ *
+ * Description:
+ * This function is used to create a new endpoint controller (EPC) device.
+ *
+ * Invoke to destroy the PCI EPC device.
+ *
+ * Input Parameters:
+ * epc - The EPC device that has to be destroyed
+ * size - The dma memory size
+ *
+ * Returned Value:
+ * The point of dma memory if success, NULL if failed
+ *
+ ****************************************************************************/
+
+FAR void *pci_epc_dma_alloc(FAR struct pci_epc_ctrl_s *epc, size_t size);
+
+/****************************************************************************
+ * Name: pci_epc_dma_memalign
+ *
+ * Description:
+ * This function is used to create a new endpoint controller (EPC) device.
+ *
+ * Invoke to destroy the PCI EPC device.
+ *
+ * Input Parameters:
+ * epc - The EPC device that has to be destroyed
+ * alignment - Alignment size
+ * size - The dma memory size
+ *
+ * Returned Value:
+ * The point of dma memory if success, NULL if failed
+ *
+ ****************************************************************************/
+
+FAR void *pci_epc_dma_memalign(FAR struct pci_epc_ctrl_s *epc,
+ size_t alignment, size_t size);
+
+/****************************************************************************
+ * Name: pci_epc_dma_free
+ *
+ * Description:
+ * This function is used to create a new endpoint controller (EPC) device.
+ *
+ * Invoke to destroy the PCI EPC device.
+ *
+ * Input Parameters:
+ * epc - The EPC device that has to be destroyed
+ * mem - The dma memory need ed to be free
+ *
+ * Returned Value:
+ * None
+ *
+ ****************************************************************************/
+
+void epc_dma_free(FAR struct pci_epc_ctrl_s *epc, FAR void *mem);
Review Comment:
add pci_ prefix
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