1 | /** |
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2 | * @file |
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3 | * |
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4 | * @ingroup rtems_bsd_machine |
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5 | * |
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6 | * @brief TODO. |
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7 | * |
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8 | * File origin from FreeBSD 'sys/amd64/include/bus.h'. |
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9 | * |
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10 | * Conditionally supports PCI IO regions (IO Ports). |
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11 | */ |
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12 | |
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13 | /*- |
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14 | * Copyright (c) 2021 Chris Johns. All rights reserved. |
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15 | * |
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16 | * Copyright (c) 2009, 2015 embedded brains GmbH. All rights reserved. |
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17 | * |
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18 | * embedded brains GmbH |
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19 | * Dornierstr. 4 |
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20 | * 82178 Puchheim |
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21 | * Germany |
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22 | * <rtems@embedded-brains.de> |
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23 | * |
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24 | * Copyright (c) KATO Takenori, 1999. |
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25 | * |
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26 | * All rights reserved. Unpublished rights reserved under the copyright |
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27 | * laws of Japan. |
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28 | * |
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29 | * Redistribution and use in source and binary forms, with or without |
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30 | * modification, are permitted provided that the following conditions |
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31 | * are met: |
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32 | * |
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33 | * 1. Redistributions of source code must retain the above copyright |
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34 | * notice, this list of conditions and the following disclaimer as |
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35 | * the first lines of this file unmodified. |
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36 | * 2. Redistributions in binary form must reproduce the above copyright |
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37 | * notice, this list of conditions and the following disclaimer in the |
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38 | * documentation and/or other materials provided with the distribution. |
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39 | * 3. The name of the author may not be used to endorse or promote products |
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40 | * derived from this software without specific prior written permission. |
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41 | * |
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42 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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43 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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44 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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45 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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46 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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47 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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48 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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49 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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50 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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51 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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52 | */ |
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53 | |
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54 | /*- |
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55 | * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. |
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56 | * All rights reserved. |
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57 | * |
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58 | * This code is derived from software contributed to The NetBSD Foundation |
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59 | * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, |
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60 | * NASA Ames Research Center. |
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61 | * |
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62 | * Redistribution and use in source and binary forms, with or without |
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63 | * modification, are permitted provided that the following conditions |
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64 | * are met: |
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65 | * 1. Redistributions of source code must retain the above copyright |
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66 | * notice, this list of conditions and the following disclaimer. |
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67 | * 2. Redistributions in binary form must reproduce the above copyright |
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68 | * notice, this list of conditions and the following disclaimer in the |
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69 | * documentation and/or other materials provided with the distribution. |
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70 | * 3. All advertising materials mentioning features or use of this software |
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71 | * must display the following acknowledgement: |
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72 | * This product includes software developed by the NetBSD |
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73 | * Foundation, Inc. and its contributors. |
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74 | * 4. Neither the name of The NetBSD Foundation nor the names of its |
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75 | * contributors may be used to endorse or promote products derived |
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76 | * from this software without specific prior written permission. |
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77 | * |
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78 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
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79 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
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80 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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81 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
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82 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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83 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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84 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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85 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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86 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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87 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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88 | * POSSIBILITY OF SUCH DAMAGE. |
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89 | */ |
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90 | |
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91 | /*- |
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92 | * Copyright (c) 1996 Charles M. Hannum. All rights reserved. |
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93 | * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. |
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94 | * |
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95 | * Redistribution and use in source and binary forms, with or without |
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96 | * modification, are permitted provided that the following conditions |
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97 | * are met: |
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98 | * 1. Redistributions of source code must retain the above copyright |
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99 | * notice, this list of conditions and the following disclaimer. |
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100 | * 2. Redistributions in binary form must reproduce the above copyright |
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101 | * notice, this list of conditions and the following disclaimer in the |
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102 | * documentation and/or other materials provided with the distribution. |
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103 | * 3. All advertising materials mentioning features or use of this software |
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104 | * must display the following acknowledgement: |
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105 | * This product includes software developed by Christopher G. Demetriou |
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106 | * for the NetBSD Project. |
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107 | * 4. The name of the author may not be used to endorse or promote products |
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108 | * derived from this software without specific prior written permission |
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109 | * |
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110 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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111 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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112 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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113 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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114 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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115 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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116 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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117 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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118 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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119 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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120 | */ |
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121 | |
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122 | #ifndef _RTEMS_BSD_MACHINE_BUS_H_ |
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123 | #define _RTEMS_BSD_MACHINE_BUS_H_ |
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124 | |
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125 | #ifndef _RTEMS_BSD_MACHINE_RTEMS_BSD_KERNEL_SPACE_H_ |
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126 | #error "the header file <machine/rtems-bsd-kernel-space.h> must be included first" |
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127 | #endif |
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128 | |
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129 | #ifdef __i386__ |
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130 | #error "x86 has its own bus.h; check your include paths are correct" |
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131 | #endif |
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132 | |
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133 | #include <bsp.h> |
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134 | |
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135 | /* |
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136 | * BSP PCI Support |
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137 | * |
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138 | * The RTEMS Nexus bus support can optionaly support PC PCI spaces that |
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139 | * mapped to BSP speciic address spaces. Add the following define to |
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140 | * the BSP header file to enable this support: |
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141 | * |
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142 | * #define BSP_HAS_PC_PCI |
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143 | * |
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144 | * If enabled a BSP must support the following IO region calls: |
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145 | * |
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146 | * inb : read 8 bits |
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147 | * outb : write 8 bits |
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148 | * inw : read 16 bits |
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149 | * outw : write 16 bits |
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150 | * inl : read 32 bits |
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151 | * outl : write 32 bits |
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152 | * |
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153 | * The BSP needs to provide the DRAM address space offset |
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154 | * PCI_DRAM_OFFSET. This is the base address of the DRAM as seen by a |
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155 | * PCI master. |
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156 | * |
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157 | * i386 BSPs have a special bus.h file and do not use this file. |
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158 | */ |
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159 | |
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160 | #ifdef BSP_HAS_PC_PCI |
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161 | |
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162 | /* |
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163 | * Values for the bus space tag, not to be used directly by MI code. |
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164 | */ |
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165 | #define BSP_BUS_SPACE_IO 0 /* space is i/o space */ |
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166 | #define BSP_BUS_SPACE_MEM 1 /* space is mem space */ |
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167 | |
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168 | #endif /* BSP_HAS_PC_PCI */ |
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169 | |
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170 | /* |
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171 | * Provide a memory tag for the DMA bus interface |
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172 | */ |
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173 | #ifdef BSP_BUS_SPACE_MEM |
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174 | #define BUS_SPACE_MEM BSP_BUS_SPACE_MEM |
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175 | #else |
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176 | #define BUS_SPACE_MEM 1 |
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177 | #endif |
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178 | |
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179 | /* |
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180 | * Bus address alignment. |
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181 | */ |
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182 | #define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t) |
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183 | |
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184 | /* |
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185 | * Bus address maxima. |
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186 | */ |
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187 | #define BUS_SPACE_MAXADDR_24BIT 0xffffffU |
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188 | #define BUS_SPACE_MAXADDR_32BIT 0xffffffffU |
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189 | #define BUS_SPACE_MAXADDR UINTPTR_MAX |
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190 | #define BUS_SPACE_MAXSIZE_24BIT 0xffffffU |
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191 | #define BUS_SPACE_MAXSIZE_32BIT 0xffffffffU |
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192 | #define BUS_SPACE_MAXSIZE UINTPTR_MAX |
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193 | |
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194 | /* |
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195 | * Bus access. |
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196 | */ |
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197 | #define BUS_SPACE_INVALID_DATA (~0U) |
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198 | #define BUS_SPACE_UNRESTRICTED (~0U) |
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199 | |
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200 | /* |
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201 | * Bus read/write barrier method. |
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202 | */ |
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203 | #define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */ |
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204 | #define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */ |
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205 | |
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206 | /* |
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207 | * Bus address and size types |
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208 | */ |
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209 | typedef uintptr_t bus_addr_t; |
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210 | typedef uintptr_t bus_size_t; |
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211 | |
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212 | /* |
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213 | * Access methods for bus resources and address space. |
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214 | */ |
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215 | typedef int bus_space_tag_t; |
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216 | typedef uintptr_t bus_space_handle_t; |
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217 | |
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218 | /* |
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219 | * Map a region of device bus space into CPU virtual address space. |
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220 | */ |
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221 | |
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222 | static __inline int |
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223 | bus_space_map(bus_space_tag_t t __unused, bus_addr_t addr, |
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224 | bus_size_t size __unused, int flags __unused, |
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225 | bus_space_handle_t *bshp) |
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226 | { |
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227 | *bshp = addr; |
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228 | return (0); |
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229 | } |
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230 | |
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231 | /* |
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232 | * Unmap a region of device bus space. |
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233 | */ |
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234 | static __inline void |
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235 | bus_space_unmap(bus_space_tag_t bst __unused, bus_space_handle_t bsh __unused, |
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236 | bus_size_t size __unused) |
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237 | { |
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238 | /* Do nothing */ |
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239 | } |
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240 | |
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241 | |
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242 | /* |
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243 | * Get a new handle for a subregion of an already-mapped area of bus space. |
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244 | */ |
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245 | static __inline int |
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246 | bus_space_subregion(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
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247 | bus_size_t ofs, bus_size_t size, bus_space_handle_t *nbshp) |
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248 | { |
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249 | *nbshp = bsh + ofs; |
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250 | return (0); |
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251 | } |
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252 | |
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253 | |
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254 | /* |
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255 | * Allocate a region of memory that is accessible to devices in bus space. |
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256 | */ |
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257 | int |
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258 | bus_space_alloc(bus_space_tag_t bst __unused, bus_addr_t rstart, bus_addr_t rend, |
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259 | bus_size_t size, bus_size_t align, bus_size_t boundary, int flags, |
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260 | bus_addr_t *addrp, bus_space_handle_t *bshp); |
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261 | |
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262 | |
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263 | /* |
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264 | * Free a region of bus space accessible memory. |
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265 | */ |
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266 | void |
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267 | bus_space_free(bus_space_tag_t bst __unused, bus_space_handle_t bsh, bus_size_t size); |
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268 | |
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269 | static __inline void |
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270 | bus_space_barrier(bus_space_tag_t bst __unused, bus_space_handle_t bsh, bus_size_t ofs, |
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271 | bus_size_t size, int flags) |
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272 | { |
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273 | /* Do nothing */ |
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274 | } |
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275 | |
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276 | /* |
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277 | * BSP Bus Space Map Support |
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278 | * |
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279 | * A BSP can provide the following as C macros in the BSP header |
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280 | * (bsp.h) to speicalise for special BSP specific bus operations: |
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281 | * |
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282 | * RTEMS_BSP_READ_1 |
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283 | * RTEMS_BSP_READ_2 |
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284 | * RTEMS_BSP_READ_4 |
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285 | * RTEMS_BSP_READ_8 |
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286 | * RTEMS_BSP_WRITE_1 |
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287 | * RTEMS_BSP_WRITE_2 |
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288 | * RTEMS_BSP_WRITE_4 |
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289 | * RTEMS_BSP_WRITE_8 |
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290 | */ |
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291 | |
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292 | static __inline uint8_t |
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293 | bsp_bus_space_read_1(const uint8_t __volatile *bsp) |
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294 | { |
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295 | #if defined(RTEMS_BSP_READ_1) |
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296 | return RTEMS_BSP_READ_1(bsp); |
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297 | #else |
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298 | return (*bsp); |
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299 | #endif |
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300 | } |
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301 | |
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302 | static __inline uint16_t |
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303 | bsp_bus_space_read_2(const uint16_t __volatile *bsp) |
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304 | { |
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305 | #if defined(RTEMS_BSP_READ_2) |
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306 | return RTEMS_BSP_READ_2(bsp); |
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307 | #else |
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308 | return (*bsp); |
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309 | #endif |
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310 | } |
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311 | |
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312 | static __inline uint32_t |
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313 | bsp_bus_space_read_4(const uint32_t __volatile *bsp) |
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314 | { |
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315 | #if defined(RTEMS_BSP_READ_4) |
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316 | return RTEMS_BSP_READ_4(bsp); |
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317 | #else |
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318 | return (*bsp); |
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319 | #endif |
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320 | } |
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321 | |
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322 | static __inline uint64_t |
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323 | bsp_bus_space_read_8(const uint64_t __volatile *bsp) |
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324 | { |
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325 | #if defined(RTEMS_BSP_READ_8) |
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326 | return RTEMS_BSP_READ_8(bsp); |
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327 | #else |
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328 | return (*bsp); |
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329 | #endif |
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330 | } |
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331 | |
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332 | static __inline void |
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333 | bsp_bus_space_write_1(uint8_t __volatile *bsp, uint8_t val) |
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334 | { |
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335 | #if defined(RTEMS_BSP_WRITE_1) |
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336 | RTEMS_BSP_WRITE_1(bsp, val); |
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337 | #else |
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338 | *bsp = val; |
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339 | #endif |
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340 | } |
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341 | |
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342 | static __inline void |
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343 | bsp_bus_space_write_2(uint16_t __volatile *bsp, uint16_t val) |
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344 | { |
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345 | #if defined(RTEMS_BSP_WRITE_2) |
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346 | RTEMS_BSP_WRITE_2(bsp, val); |
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347 | #else |
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348 | *bsp = val; |
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349 | #endif |
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350 | } |
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351 | |
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352 | static __inline void |
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353 | bsp_bus_space_write_4(uint32_t __volatile *bsp, uint32_t val) |
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354 | { |
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355 | #if defined(RTEMS_BSP_WRITE_4) |
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356 | RTEMS_BSP_WRITE_4(bsp, val); |
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357 | #else |
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358 | *bsp = val; |
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359 | #endif |
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360 | } |
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361 | |
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362 | static __inline void |
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363 | bsp_bus_space_write_8(uint64_t __volatile *bsp, uint64_t val) |
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364 | { |
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365 | #if defined(RTEMS_BSP_WRITE_8) |
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366 | RTEMS_BSP_WRITE_8(bsp, val); |
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367 | #else |
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368 | *bsp = val; |
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369 | #endif |
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370 | } |
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371 | |
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372 | |
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373 | /* |
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374 | * Read 1 unit of data from bus space described by the tag, handle and ofs |
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375 | * tuple. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes. The |
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376 | * data is returned. |
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377 | */ |
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378 | static __inline uint8_t |
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379 | bus_space_read_1(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t ofs) |
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380 | { |
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381 | #ifdef BSP_HAS_PC_PCI |
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382 | if (bst == BSP_BUS_SPACE_IO) { |
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383 | return inb(bsh + ofs); |
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384 | } |
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385 | #endif |
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386 | uint8_t __volatile *bsp = (uint8_t __volatile *)(bsh + ofs); |
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387 | return bsp_bus_space_read_1(bsp); |
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388 | } |
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389 | |
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390 | static __inline uint16_t |
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391 | bus_space_read_2(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t ofs) |
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392 | { |
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393 | #ifdef BSP_HAS_PC_PCI |
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394 | if (bst == BSP_BUS_SPACE_IO) { |
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395 | return inw(bsh + ofs); |
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396 | } |
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397 | #endif |
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398 | uint16_t __volatile *bsp = (uint16_t __volatile *)(bsh + ofs); |
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399 | return bsp_bus_space_read_2(bsp); |
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400 | } |
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401 | |
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402 | static __inline uint32_t |
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403 | bus_space_read_4(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t ofs) |
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404 | { |
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405 | #ifdef BSP_HAS_PC_PCI |
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406 | if (bst == BSP_BUS_SPACE_IO) { |
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407 | return inl(bsh + ofs); |
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408 | } |
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409 | #endif |
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410 | uint32_t __volatile *bsp = (uint32_t __volatile *)(bsh + ofs); |
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411 | return bsp_bus_space_read_4(bsp); |
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412 | } |
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413 | |
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414 | static __inline uint64_t |
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415 | bus_space_read_8(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t ofs) |
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416 | { |
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417 | #ifdef BSP_HAS_PC_PCI |
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418 | if (bst == BSP_BUS_SPACE_IO) |
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419 | return BUS_SPACE_INVALID_DATA; |
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420 | #endif |
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421 | uint64_t __volatile *bsp = (uint64_t __volatile *)(bsh + ofs); |
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422 | return bsp_bus_space_read_8(bsp); |
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423 | } |
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424 | |
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425 | |
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426 | /* |
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427 | * Write 1 unit of data to bus space described by the tag, handle and ofs |
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428 | * tuple. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes. The |
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429 | * data is passed by value. |
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430 | */ |
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431 | static __inline void |
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432 | bus_space_write_1(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t ofs, |
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433 | uint8_t val) |
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434 | { |
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435 | #ifdef BSP_HAS_PC_PCI |
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436 | if (bst == BSP_BUS_SPACE_IO) { |
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437 | outb(val, bsh + ofs); |
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438 | return; |
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439 | } |
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440 | #endif |
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441 | uint8_t __volatile *bsp = (uint8_t __volatile *)(bsh + ofs); |
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442 | bsp_bus_space_write_1(bsp, val); |
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443 | } |
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444 | |
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445 | static __inline void |
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446 | bus_space_write_2(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t ofs, |
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447 | uint16_t val) |
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448 | { |
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449 | #ifdef BSP_HAS_PC_PCI |
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450 | if (bst == BSP_BUS_SPACE_IO) { |
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451 | outw(val, bsh + ofs); |
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452 | return; |
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453 | } |
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454 | #endif |
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455 | uint16_t __volatile *bsp = (uint16_t __volatile *)(bsh + ofs); |
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456 | bsp_bus_space_write_2(bsp, val); |
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457 | } |
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458 | |
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459 | static __inline void |
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460 | bus_space_write_4(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t ofs, |
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461 | uint32_t val) |
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462 | { |
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463 | #ifdef BSP_HAS_PC_PCI |
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464 | if (bst == BSP_BUS_SPACE_IO) { |
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465 | outl(val, bsh + ofs); |
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466 | return; |
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467 | } |
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468 | #endif |
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469 | uint32_t __volatile *bsp = (uint32_t __volatile *)(bsh + ofs); |
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470 | bsp_bus_space_write_4(bsp, val); |
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471 | } |
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472 | |
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473 | static __inline void |
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474 | bus_space_write_8(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t ofs, |
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475 | uint64_t val) |
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476 | { |
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477 | #ifdef BSP_HAS_PC_PCI |
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478 | if (bst == BSP_BUS_SPACE_IO) { |
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479 | return; |
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480 | } |
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481 | #endif |
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482 | uint64_t __volatile *bsp = (uint64_t __volatile *)(bsh + ofs); |
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483 | bsp_bus_space_write_8(bsp, val); |
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484 | } |
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485 | |
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486 | |
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487 | /* |
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488 | * Read count units of data from bus space described by the tag, handle and |
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489 | * ofs tuple. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes. The |
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490 | * data is returned in the buffer passed by reference. |
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491 | */ |
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492 | static __inline void |
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493 | bus_space_read_multi_1(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
494 | bus_size_t ofs, uint8_t *bufp, bus_size_t count) |
---|
495 | { |
---|
496 | uint8_t __volatile *bsp = (uint8_t __volatile *)(bsh + ofs); |
---|
497 | while (count-- > 0) { |
---|
498 | *bufp++ = bsp_bus_space_read_1(bsp); |
---|
499 | } |
---|
500 | } |
---|
501 | |
---|
502 | static __inline void |
---|
503 | bus_space_read_multi_2(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
504 | bus_size_t ofs, uint16_t *bufp, bus_size_t count) |
---|
505 | { |
---|
506 | uint16_t __volatile *bsp = (uint16_t __volatile *)(bsh + ofs); |
---|
507 | while (count-- > 0) { |
---|
508 | *bufp++ = bsp_bus_space_read_2(bsp); |
---|
509 | } |
---|
510 | } |
---|
511 | |
---|
512 | static __inline void |
---|
513 | bus_space_read_multi_4(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
514 | bus_size_t ofs, uint32_t *bufp, bus_size_t count) |
---|
515 | { |
---|
516 | uint32_t __volatile *bsp = (uint32_t __volatile *)(bsh + ofs); |
---|
517 | while (count-- > 0) { |
---|
518 | *bufp++ = bsp_bus_space_read_4(bsp); |
---|
519 | } |
---|
520 | } |
---|
521 | |
---|
522 | static __inline void |
---|
523 | bus_space_read_multi_8(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
524 | bus_size_t ofs, uint64_t *bufp, bus_size_t count) |
---|
525 | { |
---|
526 | uint64_t __volatile *bsp = (uint64_t __volatile *)(bsh + ofs); |
---|
527 | while (count-- > 0) { |
---|
528 | *bufp++ = bsp_bus_space_read_8(bsp); |
---|
529 | } |
---|
530 | } |
---|
531 | |
---|
532 | |
---|
533 | /* |
---|
534 | * Write count units of data to bus space described by the tag, handle and |
---|
535 | * ofs tuple. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes. The |
---|
536 | * data is read from the buffer passed by reference. |
---|
537 | */ |
---|
538 | static __inline void |
---|
539 | bus_space_write_multi_1(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
540 | bus_size_t ofs, const uint8_t *bufp, bus_size_t count) |
---|
541 | { |
---|
542 | uint8_t __volatile *bsp = (uint8_t __volatile *)(bsh + ofs); |
---|
543 | while (count-- > 0) { |
---|
544 | bsp_bus_space_write_1(bsp, *bufp++); |
---|
545 | } |
---|
546 | } |
---|
547 | |
---|
548 | static __inline void |
---|
549 | bus_space_write_multi_2(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
550 | bus_size_t ofs, const uint16_t *bufp, bus_size_t count) |
---|
551 | { |
---|
552 | uint16_t __volatile *bsp = (uint16_t __volatile *)(bsh + ofs); |
---|
553 | while (count-- > 0) { |
---|
554 | bsp_bus_space_write_2(bsp, *bufp++); |
---|
555 | } |
---|
556 | } |
---|
557 | |
---|
558 | static __inline void |
---|
559 | bus_space_write_multi_4(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
560 | bus_size_t ofs, const uint32_t *bufp, bus_size_t count) |
---|
561 | { |
---|
562 | uint32_t __volatile *bsp = (uint32_t __volatile *)(bsh + ofs); |
---|
563 | while (count-- > 0) { |
---|
564 | bsp_bus_space_write_4(bsp, *bufp++); |
---|
565 | } |
---|
566 | } |
---|
567 | |
---|
568 | static __inline void |
---|
569 | bus_space_write_multi_8(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
570 | bus_size_t ofs, const uint64_t *bufp, bus_size_t count) |
---|
571 | { |
---|
572 | uint64_t __volatile *bsp = (uint64_t __volatile *)(bsh + ofs); |
---|
573 | while (count-- > 0) { |
---|
574 | bsp_bus_space_write_8(bsp, *bufp++); |
---|
575 | } |
---|
576 | } |
---|
577 | |
---|
578 | |
---|
579 | /* |
---|
580 | * Read count units of data from bus space described by the tag, handle and |
---|
581 | * ofs tuple. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes. The |
---|
582 | * data is written to the buffer passed by reference and read from successive |
---|
583 | * bus space addresses. Access is unordered. |
---|
584 | */ |
---|
585 | static __inline void |
---|
586 | bus_space_read_region_1(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
587 | bus_size_t ofs, uint8_t *bufp, bus_size_t count) |
---|
588 | { |
---|
589 | uint8_t __volatile *bsp = (uint8_t __volatile *)(bsh + ofs); |
---|
590 | while (count-- > 0) { |
---|
591 | *bufp++ = bsp_bus_space_read_1(bsp++); |
---|
592 | } |
---|
593 | } |
---|
594 | |
---|
595 | static __inline void |
---|
596 | bus_space_read_region_2(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
597 | bus_size_t ofs, uint16_t *bufp, bus_size_t count) |
---|
598 | { |
---|
599 | uint16_t __volatile *bsp = (uint16_t __volatile *)(bsh + ofs); |
---|
600 | while (count-- > 0) { |
---|
601 | *bufp++ = bsp_bus_space_read_2(bsp++); |
---|
602 | } |
---|
603 | } |
---|
604 | |
---|
605 | static __inline void |
---|
606 | bus_space_read_region_4(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
607 | bus_size_t ofs, uint32_t *bufp, bus_size_t count) |
---|
608 | { |
---|
609 | uint32_t __volatile *bsp = (uint32_t __volatile *)(bsh + ofs); |
---|
610 | while (count-- > 0) { |
---|
611 | *bufp++ = bsp_bus_space_read_4(bsp++); |
---|
612 | } |
---|
613 | } |
---|
614 | |
---|
615 | static __inline void |
---|
616 | bus_space_read_region_8(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
617 | bus_size_t ofs, uint64_t *bufp, bus_size_t count) |
---|
618 | { |
---|
619 | uint64_t __volatile *bsp = (uint64_t __volatile *)(bsh + ofs); |
---|
620 | while (count-- > 0) { |
---|
621 | *bufp++ = bsp_bus_space_read_8(bsp++); |
---|
622 | } |
---|
623 | } |
---|
624 | |
---|
625 | |
---|
626 | /* |
---|
627 | * Write count units of data from bus space described by the tag, handle and |
---|
628 | * ofs tuple. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes. The |
---|
629 | * data is read from the buffer passed by reference and written to successive |
---|
630 | * bus space addresses. Access is unordered. |
---|
631 | */ |
---|
632 | static __inline void |
---|
633 | bus_space_write_region_1(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
634 | bus_size_t ofs, const uint8_t *bufp, bus_size_t count) |
---|
635 | { |
---|
636 | uint8_t __volatile *bsp = (uint8_t __volatile *)(bsh + ofs); |
---|
637 | while (count-- > 0) { |
---|
638 | bsp_bus_space_write_1(bsp++, *bufp++); |
---|
639 | } |
---|
640 | } |
---|
641 | |
---|
642 | static __inline void |
---|
643 | bus_space_write_region_2(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
644 | bus_size_t ofs, const uint16_t *bufp, bus_size_t count) |
---|
645 | { |
---|
646 | uint16_t __volatile *bsp = (uint16_t __volatile *)(bsh + ofs); |
---|
647 | while (count-- > 0) { |
---|
648 | bsp_bus_space_write_2(bsp++, *bufp++); |
---|
649 | } |
---|
650 | } |
---|
651 | |
---|
652 | static __inline void |
---|
653 | bus_space_write_region_4(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
654 | bus_size_t ofs, const uint32_t *bufp, bus_size_t count) |
---|
655 | { |
---|
656 | uint32_t __volatile *bsp = (uint32_t __volatile *)(bsh + ofs); |
---|
657 | while (count-- > 0) { |
---|
658 | bsp_bus_space_write_4(bsp++, *bufp++); |
---|
659 | } |
---|
660 | } |
---|
661 | |
---|
662 | static __inline void |
---|
663 | bus_space_write_region_8(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
664 | bus_size_t ofs, const uint64_t *bufp, bus_size_t count) |
---|
665 | { |
---|
666 | uint64_t __volatile *bsp = (uint64_t __volatile *)(bsh + ofs); |
---|
667 | while (count-- > 0) { |
---|
668 | bsp_bus_space_write_8(bsp++, *bufp++); |
---|
669 | } |
---|
670 | } |
---|
671 | |
---|
672 | |
---|
673 | /* |
---|
674 | * Write count units of data from bus space described by the tag, handle and |
---|
675 | * ofs tuple. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes. The |
---|
676 | * data is passed by value. Writes are unordered. |
---|
677 | */ |
---|
678 | static __inline void |
---|
679 | bus_space_set_multi_1(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
680 | bus_size_t ofs, uint8_t val, bus_size_t count) |
---|
681 | { |
---|
682 | uint8_t __volatile *bsp = (uint8_t __volatile *)(bsh + ofs); |
---|
683 | while (count-- > 0) { |
---|
684 | bsp_bus_space_write_1(bsp, val); |
---|
685 | } |
---|
686 | } |
---|
687 | |
---|
688 | static __inline void |
---|
689 | bus_space_set_multi_2(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
690 | bus_size_t ofs, uint16_t val, bus_size_t count) |
---|
691 | { |
---|
692 | uint16_t __volatile *bsp = (uint16_t __volatile *)(bsh + ofs); |
---|
693 | while (count-- > 0) { |
---|
694 | bsp_bus_space_write_2(bsp, val); |
---|
695 | } |
---|
696 | } |
---|
697 | |
---|
698 | static __inline void |
---|
699 | bus_space_set_multi_4(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
700 | bus_size_t ofs, uint32_t val, bus_size_t count) |
---|
701 | { |
---|
702 | uint32_t __volatile *bsp = (uint32_t __volatile *)(bsh + ofs); |
---|
703 | while (count-- > 0) { |
---|
704 | bsp_bus_space_write_4(bsp, val); |
---|
705 | } |
---|
706 | } |
---|
707 | |
---|
708 | static __inline void |
---|
709 | bus_space_set_multi_8(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
710 | bus_size_t ofs, uint64_t val, bus_size_t count) |
---|
711 | { |
---|
712 | uint64_t __volatile *bsp = (uint64_t __volatile *)(bsh + ofs); |
---|
713 | while (count-- > 0) { |
---|
714 | bsp_bus_space_write_8(bsp, val); |
---|
715 | } |
---|
716 | } |
---|
717 | |
---|
718 | |
---|
719 | /* |
---|
720 | * Write count units of data from bus space described by the tag, handle and |
---|
721 | * ofs tuple. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes. The |
---|
722 | * data is passed by value and written to successive bus space addresses. |
---|
723 | * Writes are unordered. |
---|
724 | */ |
---|
725 | static __inline void |
---|
726 | bus_space_set_region_1(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
727 | bus_size_t ofs, uint8_t val, bus_size_t count) |
---|
728 | { |
---|
729 | uint8_t __volatile *bsp = (uint8_t __volatile *)(bsh + ofs); |
---|
730 | while (count-- > 0) { |
---|
731 | bsp_bus_space_write_1(bsp++, val); |
---|
732 | } |
---|
733 | } |
---|
734 | |
---|
735 | static __inline void |
---|
736 | bus_space_set_region_2(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
737 | bus_size_t ofs, uint16_t val, bus_size_t count) |
---|
738 | { |
---|
739 | uint16_t __volatile *bsp = (uint16_t __volatile *)(bsh + ofs); |
---|
740 | while (count-- > 0) { |
---|
741 | bsp_bus_space_write_2(bsp++, val); |
---|
742 | } |
---|
743 | } |
---|
744 | |
---|
745 | static __inline void |
---|
746 | bus_space_set_region_4(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
747 | bus_size_t ofs, uint32_t val, bus_size_t count) |
---|
748 | { |
---|
749 | uint32_t __volatile *bsp = (uint32_t __volatile *)(bsh + ofs); |
---|
750 | while (count-- > 0) { |
---|
751 | bsp_bus_space_write_4(bsp++, val); |
---|
752 | } |
---|
753 | } |
---|
754 | |
---|
755 | static __inline void |
---|
756 | bus_space_set_region_8(bus_space_tag_t bst __unused, bus_space_handle_t bsh, |
---|
757 | bus_size_t ofs, uint64_t val, bus_size_t count) |
---|
758 | { |
---|
759 | uint64_t __volatile *bsp = (uint64_t __volatile *)(bsh + ofs); |
---|
760 | while (count-- > 0) { |
---|
761 | bsp_bus_space_write_8(bsp++, val); |
---|
762 | } |
---|
763 | } |
---|
764 | |
---|
765 | |
---|
766 | /* |
---|
767 | * Copy count units of data from bus space described by the tag and the first |
---|
768 | * handle and ofs pair to bus space described by the tag and the second handle |
---|
769 | * and ofs pair. A unit of data can be 1 byte, 2 bytes, 4 bytes or 8 bytes. |
---|
770 | * The data is read from successive bus space addresses and also written to |
---|
771 | * successive bus space addresses. Both reads and writes are unordered. |
---|
772 | */ |
---|
773 | static __inline void |
---|
774 | bus_space_copy_region_1(bus_space_tag_t bst __unused, bus_space_handle_t bsh1, |
---|
775 | bus_size_t ofs1, bus_space_handle_t bsh2, bus_size_t ofs2, bus_size_t count) |
---|
776 | { |
---|
777 | uint8_t __volatile *dst = (uint8_t __volatile *)(bsh1 + ofs1); |
---|
778 | uint8_t __volatile *src = (uint8_t __volatile *)(bsh2 + ofs2); |
---|
779 | if (dst > src) { |
---|
780 | src += count - 1; |
---|
781 | dst += count - 1; |
---|
782 | while (count-- > 0) { |
---|
783 | bsp_bus_space_write_1(dst, bsp_bus_space_read_1(src)); |
---|
784 | src--; |
---|
785 | dst--; |
---|
786 | } |
---|
787 | } else { |
---|
788 | while (count-- > 0) { |
---|
789 | bsp_bus_space_write_1(dst, bsp_bus_space_read_1(src)); |
---|
790 | src++; |
---|
791 | dst++; |
---|
792 | } |
---|
793 | } |
---|
794 | } |
---|
795 | |
---|
796 | static __inline void |
---|
797 | bus_space_copy_region_2(bus_space_tag_t bst __unused, bus_space_handle_t bsh1, |
---|
798 | bus_size_t ofs1, bus_space_handle_t bsh2, bus_size_t ofs2, bus_size_t count) |
---|
799 | { |
---|
800 | uint16_t __volatile *dst = (uint16_t __volatile *)(bsh1 + ofs1); |
---|
801 | uint16_t __volatile *src = (uint16_t __volatile *)(bsh2 + ofs2);; |
---|
802 | if (dst > src) { |
---|
803 | src += count - 1; |
---|
804 | dst += count - 1; |
---|
805 | while (count-- > 0) { |
---|
806 | bsp_bus_space_write_2(dst, bsp_bus_space_read_2(src)); |
---|
807 | src--; |
---|
808 | dst--; |
---|
809 | } |
---|
810 | } else { |
---|
811 | while (count-- > 0) { |
---|
812 | bsp_bus_space_write_2(dst, bsp_bus_space_read_2(src)); |
---|
813 | src++; |
---|
814 | dst++; |
---|
815 | } |
---|
816 | } |
---|
817 | } |
---|
818 | |
---|
819 | static __inline void |
---|
820 | bus_space_copy_region_4(bus_space_tag_t bst __unused, bus_space_handle_t bsh1, |
---|
821 | bus_size_t ofs1, bus_space_handle_t bsh2, bus_size_t ofs2, bus_size_t count) |
---|
822 | { |
---|
823 | uint32_t __volatile *dst = (uint32_t __volatile *)(bsh1 + ofs1); |
---|
824 | uint32_t __volatile *src = (uint32_t __volatile *)(bsh2 + ofs2);; |
---|
825 | if (dst > src) { |
---|
826 | src += count - 1; |
---|
827 | dst += count - 1; |
---|
828 | while (count-- > 0) { |
---|
829 | bsp_bus_space_write_4(dst, bsp_bus_space_read_4(src)); |
---|
830 | src--; |
---|
831 | dst--; |
---|
832 | } |
---|
833 | } else { |
---|
834 | while (count-- > 0) { |
---|
835 | bsp_bus_space_write_4(dst, bsp_bus_space_read_4(src)); |
---|
836 | src++; |
---|
837 | dst++; |
---|
838 | } |
---|
839 | } |
---|
840 | } |
---|
841 | |
---|
842 | static __inline void |
---|
843 | bus_space_copy_region_8(bus_space_tag_t bst __unused, bus_space_handle_t bsh1, |
---|
844 | bus_size_t ofs1, bus_space_handle_t bsh2, bus_size_t ofs2, bus_size_t count) |
---|
845 | { |
---|
846 | uint64_t __volatile *dst = (uint64_t __volatile *)(bsh1 + ofs1); |
---|
847 | uint64_t __volatile *src = (uint64_t __volatile *)(bsh2 + ofs2);; |
---|
848 | if (dst > src) { |
---|
849 | src += count - 1; |
---|
850 | dst += count - 1; |
---|
851 | while (count-- > 0) { |
---|
852 | bsp_bus_space_write_8(dst, bsp_bus_space_read_8(src)); |
---|
853 | src--; |
---|
854 | dst--; |
---|
855 | } |
---|
856 | } else { |
---|
857 | while (count-- > 0) { |
---|
858 | bsp_bus_space_write_8(dst, bsp_bus_space_read_8(src)); |
---|
859 | src++; |
---|
860 | dst++; |
---|
861 | } |
---|
862 | } |
---|
863 | } |
---|
864 | |
---|
865 | |
---|
866 | /* |
---|
867 | * Stream accesses are the same as normal accesses on RTEMS; there are no |
---|
868 | * supported bus systems with an endianess different from the host one. |
---|
869 | */ |
---|
870 | #define bus_space_read_stream_1(t, h, o) \ |
---|
871 | bus_space_read_1(t, h, o) |
---|
872 | #define bus_space_read_stream_2(t, h, o) \ |
---|
873 | bus_space_read_2(t, h, o) |
---|
874 | #define bus_space_read_stream_4(t, h, o) \ |
---|
875 | bus_space_read_4(t, h, o) |
---|
876 | #define bus_space_read_stream_8(t, h, o) \ |
---|
877 | bus_space_read_8(t, h, o) |
---|
878 | |
---|
879 | #define bus_space_read_multi_stream_1(t, h, o, a, c) \ |
---|
880 | bus_space_read_multi_1(t, h, o, a, c) |
---|
881 | #define bus_space_read_multi_stream_2(t, h, o, a, c) \ |
---|
882 | bus_space_read_multi_2(t, h, o, a, c) |
---|
883 | #define bus_space_read_multi_stream_4(t, h, o, a, c) \ |
---|
884 | bus_space_read_multi_4(t, h, o, a, c) |
---|
885 | #define bus_space_read_multi_stream_8(t, h, o, a, c) \ |
---|
886 | bus_space_read_multi_8(t, h, o, a, c) |
---|
887 | |
---|
888 | #define bus_space_write_stream_1(t, h, o, v) \ |
---|
889 | bus_space_write_1(t, h, o, v) |
---|
890 | #define bus_space_write_stream_2(t, h, o, v) \ |
---|
891 | bus_space_write_2(t, h, o, v) |
---|
892 | #define bus_space_write_stream_4(t, h, o, v) \ |
---|
893 | bus_space_write_4(t, h, o, v) |
---|
894 | #define bus_space_write_stream_8(t, h, o, v) \ |
---|
895 | bus_space_write_8(t, h, o, v) |
---|
896 | |
---|
897 | #define bus_space_write_multi_stream_1(t, h, o, a, c) \ |
---|
898 | bus_space_write_multi_1(t, h, o, a, c) |
---|
899 | #define bus_space_write_multi_stream_2(t, h, o, a, c) \ |
---|
900 | bus_space_write_multi_2(t, h, o, a, c) |
---|
901 | #define bus_space_write_multi_stream_4(t, h, o, a, c) \ |
---|
902 | bus_space_write_multi_4(t, h, o, a, c) |
---|
903 | #define bus_space_write_multi_stream_8(t, h, o, a, c) \ |
---|
904 | bus_space_write_multi_8(t, h, o, a, c) |
---|
905 | |
---|
906 | #define bus_space_set_multi_stream_1(t, h, o, v, c) \ |
---|
907 | bus_space_set_multi_1(t, h, o, v, c) |
---|
908 | #define bus_space_set_multi_stream_2(t, h, o, v, c) \ |
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909 | bus_space_set_multi_2(t, h, o, v, c) |
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910 | #define bus_space_set_multi_stream_4(t, h, o, v, c) \ |
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911 | bus_space_set_multi_4(t, h, o, v, c) |
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912 | #define bus_space_set_multi_stream_8(t, h, o, v, c) \ |
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913 | bus_space_set_multi_8(t, h, o, v, c) |
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914 | |
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915 | #define bus_space_read_region_stream_1(t, h, o, a, c) \ |
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916 | bus_space_read_region_1(t, h, o, a, c) |
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917 | #define bus_space_read_region_stream_2(t, h, o, a, c) \ |
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918 | bus_space_read_region_2(t, h, o, a, c) |
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919 | #define bus_space_read_region_stream_4(t, h, o, a, c) \ |
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920 | bus_space_read_region_4(t, h, o, a, c) |
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921 | #define bus_space_read_region_stream_8(t, h, o, a, c) \ |
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922 | bus_space_read_region_8(t, h, o, a, c) |
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923 | |
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924 | #define bus_space_write_region_stream_1(t, h, o, a, c) \ |
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925 | bus_space_write_region_1(t, h, o, a, c) |
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926 | #define bus_space_write_region_stream_2(t, h, o, a, c) \ |
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927 | bus_space_write_region_2(t, h, o, a, c) |
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928 | #define bus_space_write_region_stream_4(t, h, o, a, c) \ |
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929 | bus_space_write_region_4(t, h, o, a, c) |
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930 | #define bus_space_write_region_stream_8(t, h, o, a, c) \ |
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931 | bus_space_write_region_8(t, h, o, a, c) |
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932 | |
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933 | #define bus_space_set_region_stream_1(t, h, o, v, c) \ |
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934 | bus_space_set_region_1(t, h, o, v, c) |
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935 | #define bus_space_set_region_stream_2(t, h, o, v, c) \ |
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936 | bus_space_set_region_2(t, h, o, v, c) |
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937 | #define bus_space_set_region_stream_4(t, h, o, v, c) \ |
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938 | bus_space_set_region_4(t, h, o, v, c) |
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939 | #define bus_space_set_region_stream_8(t, h, o, v, c) \ |
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940 | bus_space_set_region_8(t, h, o, v, c) |
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941 | |
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942 | #define bus_space_copy_region_stream_1(t, h1, o1, h2, o2, c) \ |
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943 | bus_space_copy_region_1(t, h1, o1, h2, o2, c) |
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944 | #define bus_space_copy_region_stream_2(t, h1, o1, h2, o2, c) \ |
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945 | bus_space_copy_region_2(t, h1, o1, h2, o2, c) |
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946 | #define bus_space_copy_region_stream_4(t, h1, o1, h2, o2, c) \ |
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947 | bus_space_copy_region_4(t, h1, o1, h2, o2, c) |
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948 | #define bus_space_copy_region_stream_8(t, h1, o1, h2, o2, c) \ |
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949 | bus_space_copy_region_8(t, h1, o1, h2, o2, c) |
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950 | |
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951 | #include <machine/bus_dma.h> |
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952 | |
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953 | #endif /* _RTEMS_BSD_MACHINE_BUS_H_ */ |
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