RTEMS 6.1-rc7
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dma.h
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1/* SPDX-License-Identifier: BSD-2-Clause */
2
11/*
12 * Copyright (C) 2008, 2009 embedded brains GmbH & Co. KG
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
24 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
27 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
34 */
35
36#ifndef LIBBSP_ARM_LPC176X_DMA_H
37#define LIBBSP_ARM_LPC176X_DMA_H
38
39#include <rtems.h>
40
41#ifdef __cplusplus
42extern "C" {
43#endif /* __cplusplus */
44
58void lpc176x_dma_initialize( void );
59
68
77void lpc176x_dma_channel_release( unsigned channel );
78
88 unsigned channel,
89 bool force
90);
91
92rtems_status_code lpc176x_dma_copy_initialize( void );
93
94rtems_status_code lpc176x_dma_copy_release( void );
95
96rtems_status_code lpc176x_dma_copy(
97 unsigned channel,
98 const void *dest,
99 const void *src,
100 size_t n,
101 size_t width
102);
103
104rtems_status_code lpc176x_dma_copy_wait( unsigned channel );
105
108#ifdef __cplusplus
109}
110#endif /* __cplusplus */
111
112#endif /* LIBBSP_ARM_LPC176X_DMA_H */
rtems_status_code
This enumeration provides status codes for directives of the Classic API.
Definition: status.h:85
rtems_status_code lpc176x_dma_channel_obtain(unsigned channel)
Tries to obtain the DMA channel channel.
Definition: dma.c:70
void lpc176x_dma_channel_release(unsigned channel)
Releases the DMA channel channel.
Definition: dma.c:92
void lpc176x_dma_channel_disable(unsigned channel, bool force)
Disables the DMA channel channel.
Definition: dma.c:102
void lpc176x_dma_initialize(void)
Initializes the general purpose DMA.
Definition: dma.c:45
This header file defines the RTEMS Classic API.