lipengfei28 commented on code in PR #16767:
URL: https://github.com/apache/nuttx/pull/16767#discussion_r2245276290
##########
drivers/pci/pci_epc.c:
##########
@@ -1036,3 +1053,92 @@ void pci_epc_destroy(FAR struct pci_epc_ctrl_s *epc)
nxmutex_destroy(&epc->lock);
kmm_free(epc);
}
+
+/****************************************************************************
+ * 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)
+{
+ if (epc->dmaheap)
Review Comment:
done
##########
drivers/pci/pci_epc.c:
##########
@@ -1036,3 +1053,92 @@ void pci_epc_destroy(FAR struct pci_epc_ctrl_s *epc)
nxmutex_destroy(&epc->lock);
kmm_free(epc);
}
+
+/****************************************************************************
+ * 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)
+{
+ if (epc->dmaheap)
+ {
+ return mm_malloc(epc->dmaheap, size);
+ }
+ else
+ {
+ return kmm_malloc(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)
+{
+ if (epc->dmaheap)
+ {
+ return mm_memalign(epc->dmaheap, alignment, size);
+ }
+ else
+ {
+ return kmm_memalign(alignment, 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 pci_epc_dma_free(FAR struct pci_epc_ctrl_s *epc, FAR void *mem)
+{
+ if (epc->dmaheap)
Review Comment:
done
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