mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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41533aab3a
Our USB buffers are just arrays of uint8_t in program RAM, so let's treat them that way. The DMA descriptors are in normal RAM, too. BUG=chrome-os-partner:40693 BRANCH=none TEST=make buildall Change-Id: Ibafe1a557a328bbf8cf37ce113675fcd35bad376 Signed-off-by: Bill Richardson <wfrichar@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/273918 Reviewed-by: Randall Spangler <rspangler@chromium.org>
37 lines
1.4 KiB
C
37 lines
1.4 KiB
C
/* Copyright 2015 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef __CROS_EC_USB_HW_H
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#define __CROS_EC_USB_HW_H
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/* Helpers for endpoint declaration */
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#define _EP_HANDLER2(num, suffix) CONCAT3(ep_, num, suffix)
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#define _EP_TX_HANDLER(num) _EP_HANDLER2(num, _tx)
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#define _EP_RX_HANDLER(num) _EP_HANDLER2(num, _rx)
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#define _EP_RESET_HANDLER(num) _EP_HANDLER2(num, _rst)
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#define USB_DECLARE_EP(num, tx_handler, rx_handler, rst_handler) \
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void _EP_TX_HANDLER(num)(void) \
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__attribute__ ((alias(STRINGIFY(tx_handler)))); \
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void _EP_RX_HANDLER(num)(void) \
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__attribute__ ((alias(STRINGIFY(rx_handler)))); \
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void _EP_RESET_HANDLER(num)(void) \
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__attribute__ ((alias(STRINGIFY(rst_handler))));
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/* arrays with all endpoint callbacks */
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extern void (*usb_ep_tx[]) (void);
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extern void (*usb_ep_rx[]) (void);
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extern void (*usb_ep_reset[]) (void);
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/* array with interface-specific control request callbacks */
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extern int (*usb_iface_request[]) (uint8_t *ep0_buf_rx, uint8_t *ep0_buf_tx);
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#define _IFACE_HANDLER(num) CONCAT3(iface_, num, _request)
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#define USB_DECLARE_IFACE(num, handler) \
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int _IFACE_HANDLER(num)(uint8_t *ep0_buf_rx, \
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uint8_t *epo_buf_tx) \
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__attribute__ ((alias(STRINGIFY(handler))));
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#endif /* __CROS_EC_USB_HW_H */
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