2b571e1d11
we need to alloc req buffer in cacheline size units, othersize the data may by incorrect. Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
/****************************************************************************
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* drivers/usbdev/usbdev_req.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/usb/usbdev.h>
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#ifndef CONFIG_USBDEV_DMA
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# include <nuttx/kmalloc.h>
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#endif
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Allocate/free I/O requests.
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* Should not be called from interrupt processing!
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*/
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#define EP_ALLOCREQ(ep) (ep)->ops->allocreq(ep)
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#define EP_FREEREQ(ep,req) (ep)->ops->freereq(ep,req)
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/* Allocate/free an I/O buffer.
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* Should not be called from interrupt processing!
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*/
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#ifdef CONFIG_USBDEV_DMA
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# define EP_ALLOCBUFFER(ep,nb) (ep)->ops->allocbuffer(ep,nb)
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# define EP_FREEBUFFER(ep,buf) (ep)->ops->freebuffer(ep,buf)
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#else
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# if CONFIG_USBDEV_EPBUFFER_ALIGNMENT != 0
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# define EP_ALLOCBUFFER(ep,nb) kmm_memalign(CONFIG_USBDEV_EPBUFFER_ALIGNMENT, nb)
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# else
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# define EP_ALLOCBUFFER(ep,nb) kmm_malloc(nb)
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# endif
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# define EP_FREEBUFFER(ep,buf) kmm_free(buf)
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: usbdev_allocreq
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*
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* Description:
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* Allocate a request instance along with its buffer
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*
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****************************************************************************/
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FAR struct usbdev_req_s *usbdev_allocreq(FAR struct usbdev_ep_s *ep,
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uint16_t len)
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{
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FAR struct usbdev_req_s *req;
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req = EP_ALLOCREQ(ep);
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if (req != NULL)
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{
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req->len = len;
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req->buf = EP_ALLOCBUFFER(ep, len);
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req->flags = USBDEV_REQFLAGS_NULLPKT;
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if (req->buf == NULL)
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{
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EP_FREEREQ(ep, req);
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req = NULL;
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}
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}
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return req;
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}
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/****************************************************************************
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* Name: usbdev_freereq
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*
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* Description:
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* Free a request instance along with its buffer
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*
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****************************************************************************/
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void usbdev_freereq(FAR struct usbdev_ep_s *ep,
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FAR struct usbdev_req_s *req)
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{
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if (ep != NULL && req != NULL)
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{
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if (req->buf != NULL)
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{
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EP_FREEBUFFER(ep, req->buf);
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}
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EP_FREEREQ(ep, req);
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}
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}
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