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File indexing completed on 2025-05-11 08:23:46
0001 /* SPDX-License-Identifier: BSD-2-Clause */ 0002 0003 /* 0004 * RTEMS generic mcf548x BSP 0005 * 0006 * This file declares glue functions to the Freescale Mcdma API. 0007 */ 0008 0009 /* 0010 * Copyright (C) 2004, 2009 embedded brains GmbH & Co. KG 0011 * 0012 * Redistribution and use in source and binary forms, with or without 0013 * modification, are permitted provided that the following conditions 0014 * are met: 0015 * 1. Redistributions of source code must retain the above copyright 0016 * notice, this list of conditions and the following disclaimer. 0017 * 2. Redistributions in binary form must reproduce the above copyright 0018 * notice, this list of conditions and the following disclaimer in the 0019 * documentation and/or other materials provided with the distribution. 0020 * 0021 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 0022 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 0023 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 0024 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 0025 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 0026 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 0027 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 0028 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 0029 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 0030 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 0031 * POSSIBILITY OF SUCH DAMAGE. 0032 */ 0033 0034 #ifndef _MCDMA_GLUE_H 0035 #define _MCDMA_GLUE_H 0036 0037 #include <rtems.h> 0038 #include <rtems/irq.h> 0039 #include <mcf548x/mcf548x.h> 0040 0041 #define MCDMA_CLR_PENDING(chan) (MCF548X_DMA_DIPR = (1 << (chan))) 0042 #define MCDMA_GET_PENDING(chan) (MCF548X_DMA_DIPR & (1 << (chan))) 0043 0044 /*=========================================================================*\ 0045 | Function: | 0046 \*-------------------------------------------------------------------------*/ 0047 void mcdma_glue_irq_enable 0048 ( 0049 /*-------------------------------------------------------------------------*\ 0050 | Purpose: | 0051 | enable interrupt for given task number | 0052 +---------------------------------------------------------------------------+ 0053 | Input Parameters: | 0054 \*-------------------------------------------------------------------------*/ 0055 int mcdma_taskno /* task number to enable */ 0056 ); 0057 /*-------------------------------------------------------------------------*\ 0058 | Return Value: | 0059 | none | 0060 \*=========================================================================*/ 0061 0062 /*=========================================================================*\ 0063 | Function: | 0064 \*-------------------------------------------------------------------------*/ 0065 void mcdma_glue_irq_disable 0066 ( 0067 /*-------------------------------------------------------------------------*\ 0068 | Purpose: | 0069 | disable interrupt for given task number | 0070 +---------------------------------------------------------------------------+ 0071 | Input Parameters: | 0072 \*-------------------------------------------------------------------------*/ 0073 int mcdma_taskno /* task number to disable */ 0074 ); 0075 /*-------------------------------------------------------------------------*\ 0076 | Return Value: | 0077 | none | 0078 \*=========================================================================*/ 0079 0080 /*=========================================================================*\ 0081 | Function: | 0082 \*-------------------------------------------------------------------------*/ 0083 void mcdma_glue_irq_install 0084 ( 0085 /*-------------------------------------------------------------------------*\ 0086 | Purpose: | 0087 | install given function as mcdma interrupt handler | 0088 +---------------------------------------------------------------------------+ 0089 | Input Parameters: | 0090 \*-------------------------------------------------------------------------*/ 0091 int mcdma_taskno, /* task number for handler */ 0092 void (*the_handler)(rtems_irq_hdl_param), /* function to call */ 0093 void *the_param 0094 ); 0095 /*-------------------------------------------------------------------------*\ 0096 | Return Value: | 0097 | none | 0098 \*=========================================================================*/ 0099 0100 /*=========================================================================*\ 0101 | Function: | 0102 \*-------------------------------------------------------------------------*/ 0103 void mcdma_glue_init 0104 ( 0105 /*-------------------------------------------------------------------------*\ 0106 | Purpose: | 0107 | initialize the mcdma module (if not yet done): | 0108 | - load code | 0109 | - initialize registers | 0110 | - initialize bus arbiter | 0111 | - initialize interrupt control | 0112 +---------------------------------------------------------------------------+ 0113 | Input Parameters: | 0114 \*-------------------------------------------------------------------------*/ 0115 void *sram_base /* base address for SRAM, to be used for DMA task */ 0116 ); 0117 /*-------------------------------------------------------------------------*\ 0118 | Return Value: | 0119 | none | 0120 \*=========================================================================*/ 0121 0122 #endif /* _MCDMA_GLUE_H */
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