1 | /* SPDX-License-Identifier: BSD-2-Clause */ |
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2 | |
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3 | /* |
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4 | * RTEMS generic mcf548x BSP |
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5 | * |
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6 | * This file declares glue functions to the Freescale Mcdma API. |
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7 | */ |
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8 | |
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9 | /* |
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10 | * Copyright (c) 2004, 2009 embedded brains GmbH. All rights reserved. |
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11 | * |
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12 | * Redistribution and use in source and binary forms, with or without |
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13 | * modification, are permitted provided that the following conditions |
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14 | * are met: |
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15 | * 1. Redistributions of source code must retain the above copyright |
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16 | * notice, this list of conditions and the following disclaimer. |
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17 | * 2. Redistributions in binary form must reproduce the above copyright |
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18 | * notice, this list of conditions and the following disclaimer in the |
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19 | * documentation and/or other materials provided with the distribution. |
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20 | * |
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21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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22 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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25 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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31 | * POSSIBILITY OF SUCH DAMAGE. |
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32 | */ |
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33 | |
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34 | #ifndef _MCDMA_GLUE_H |
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35 | #define _MCDMA_GLUE_H |
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36 | |
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37 | #include <rtems.h> |
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38 | #include <rtems/irq.h> |
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39 | #include <mcf548x/mcf548x.h> |
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40 | |
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41 | #define MCDMA_CLR_PENDING(chan) (MCF548X_DMA_DIPR = (1 << (chan))) |
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42 | #define MCDMA_GET_PENDING(chan) (MCF548X_DMA_DIPR & (1 << (chan))) |
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43 | |
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44 | /*=========================================================================*\ |
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45 | | Function: | |
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46 | \*-------------------------------------------------------------------------*/ |
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47 | void mcdma_glue_irq_enable |
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48 | ( |
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49 | /*-------------------------------------------------------------------------*\ |
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50 | | Purpose: | |
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51 | | enable interrupt for given task number | |
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52 | +---------------------------------------------------------------------------+ |
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53 | | Input Parameters: | |
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54 | \*-------------------------------------------------------------------------*/ |
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55 | int mcdma_taskno /* task number to enable */ |
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56 | ); |
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57 | /*-------------------------------------------------------------------------*\ |
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58 | | Return Value: | |
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59 | | none | |
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60 | \*=========================================================================*/ |
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61 | |
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62 | /*=========================================================================*\ |
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63 | | Function: | |
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64 | \*-------------------------------------------------------------------------*/ |
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65 | void mcdma_glue_irq_disable |
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66 | ( |
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67 | /*-------------------------------------------------------------------------*\ |
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68 | | Purpose: | |
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69 | | disable interrupt for given task number | |
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70 | +---------------------------------------------------------------------------+ |
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71 | | Input Parameters: | |
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72 | \*-------------------------------------------------------------------------*/ |
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73 | int mcdma_taskno /* task number to disable */ |
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74 | ); |
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75 | /*-------------------------------------------------------------------------*\ |
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76 | | Return Value: | |
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77 | | none | |
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78 | \*=========================================================================*/ |
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79 | |
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80 | /*=========================================================================*\ |
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81 | | Function: | |
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82 | \*-------------------------------------------------------------------------*/ |
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83 | void mcdma_glue_irq_install |
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84 | ( |
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85 | /*-------------------------------------------------------------------------*\ |
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86 | | Purpose: | |
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87 | | install given function as mcdma interrupt handler | |
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88 | +---------------------------------------------------------------------------+ |
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89 | | Input Parameters: | |
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90 | \*-------------------------------------------------------------------------*/ |
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91 | int mcdma_taskno, /* task number for handler */ |
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92 | void (*the_handler)(rtems_irq_hdl_param), /* function to call */ |
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93 | void *the_param |
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94 | ); |
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95 | /*-------------------------------------------------------------------------*\ |
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96 | | Return Value: | |
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97 | | none | |
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98 | \*=========================================================================*/ |
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99 | |
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100 | /*=========================================================================*\ |
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101 | | Function: | |
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102 | \*-------------------------------------------------------------------------*/ |
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103 | void mcdma_glue_init |
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104 | ( |
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105 | /*-------------------------------------------------------------------------*\ |
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106 | | Purpose: | |
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107 | | initialize the mcdma module (if not yet done): | |
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108 | | - load code | |
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109 | | - initialize registers | |
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110 | | - initialize bus arbiter | |
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111 | | - initialize interrupt control | |
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112 | +---------------------------------------------------------------------------+ |
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113 | | Input Parameters: | |
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114 | \*-------------------------------------------------------------------------*/ |
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115 | void *sram_base /* base address for SRAM, to be used for DMA task */ |
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116 | ); |
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117 | /*-------------------------------------------------------------------------*\ |
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118 | | Return Value: | |
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119 | | none | |
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120 | \*=========================================================================*/ |
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121 | |
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122 | #endif /* _MCDMA_GLUE_H */ |
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