usbdev: move usbdev_req function to common code

Move usbdev_req function to common code, Reduce duplicated code. Signed-off-by: zhangyuan21 <zhangyuan21@xiaomi.com>
2026-05-20 04:16:35 +08:00 · 2023-07-06 13:57:42 +08:00
parent d8ca744052
commit 602d5974c8
12 changed files with 174 additions and 510 deletions
@@ -0,0 +1,108 @@
+/****************************************************************************
+ * drivers/usbdev/usbdev_req.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/usb/usbdev.h>
+
+#ifndef CONFIG_USBDEV_DMA
+#  include <nuttx/kmalloc.h>
+#endif
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Allocate/free I/O requests.
+ * Should not be called from interrupt processing!
+ */
+
+#define EP_ALLOCREQ(ep)            (ep)->ops->allocreq(ep)
+#define EP_FREEREQ(ep,req)         (ep)->ops->freereq(ep,req)
+
+/* Allocate/free an I/O buffer.
+ * Should not be called from interrupt processing!
+ */
+
+#ifdef CONFIG_USBDEV_DMA
+#  define EP_ALLOCBUFFER(ep,nb)    (ep)->ops->allocbuffer(ep,nb)
+#  define EP_FREEBUFFER(ep,buf)    (ep)->ops->freebuffer(ep,buf)
+#else
+#  define EP_ALLOCBUFFER(ep,nb)    kmm_malloc(nb)
+#  define EP_FREEBUFFER(ep,buf)    kmm_free(buf)
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: usbdev_allocreq
+ *
+ * Description:
+ *   Allocate a request instance along with its buffer
+ *
+ ****************************************************************************/
+
+FAR struct usbdev_req_s *usbdev_allocreq(FAR struct usbdev_ep_s *ep,
+                                         uint16_t len)
+{
+  FAR struct usbdev_req_s *req;
+
+  req = EP_ALLOCREQ(ep);
+  if (req != NULL)
+    {
+      req->len = len;
+      req->buf = EP_ALLOCBUFFER(ep, len);
+      req->flags = USBDEV_REQFLAGS_NULLPKT;
+
+      if (req->buf == NULL)
+        {
+          EP_FREEREQ(ep, req);
+          req = NULL;
+        }
+    }
+
+  return req;
+}
+
+/****************************************************************************
+ * Name: usbdev_freereq
+ *
+ * Description:
+ *   Free a request instance along with its buffer
+ *
+ ****************************************************************************/
+
+void usbdev_freereq(FAR struct usbdev_ep_s *ep,
+                    FAR struct usbdev_req_s *req)
+{
+  if (ep != NULL && req != NULL)
+    {
+      if (req->buf != NULL)
+        {
+          EP_FREEBUFFER(ep, req->buf);
+        }
+
+      EP_FREEREQ(ep, req);
+    }
+}