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 Unpublished rights reserved under the copyright |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