1 | /* |
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2 | * This software is Copyright (C) 1998 by T.sqware - all rights limited |
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3 | * It is provided in to the public domain "as is", can be freely modified |
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4 | * as far as this copyight notice is kept unchanged, but does not imply |
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5 | * an endorsement by T.sqware of the product in which it is included. |
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6 | * |
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7 | * $Id$ |
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8 | */ |
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9 | |
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10 | #include <rtems.h> |
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11 | #include <bsp.h> |
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12 | #include <pcibios.h> |
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13 | |
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14 | #include <string.h> /* memcpy */ |
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15 | |
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16 | /* |
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17 | * This is simpliest possible PCI BIOS, it assumes that addressing |
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18 | * is flat and that stack is big enough |
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19 | */ |
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20 | |
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21 | |
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22 | static int pcibInitialized = 0; |
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23 | static unsigned int pcibEntry; |
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24 | |
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25 | /* |
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26 | * Array to pass data between c and asm parts, at the time of |
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27 | * writing I am not yet that familiar with extended asm feature |
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28 | * of gcc. This code is not on performance path, so we can care |
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29 | * relatively little about performance here |
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30 | */ |
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31 | static volatile unsigned int pcibExchg[5]; |
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32 | |
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33 | static int pcib_convert_err(int err); |
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34 | |
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35 | /* |
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36 | * Detects presense of PCI BIOS, returns |
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37 | * error code |
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38 | */ |
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39 | int |
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40 | pci_initialize(void) |
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41 | { |
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42 | unsigned char *ucp; |
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43 | unsigned char sum; |
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44 | int i; |
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45 | |
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46 | pcibInitialized = 0; |
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47 | |
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48 | /* First, we have to look for BIOS-32 */ |
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49 | for (ucp = (unsigned char *)0xE0000; |
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50 | ucp < (unsigned char *)0xFFFFF; |
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51 | ucp += 0x10) { |
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52 | if (memcmp(ucp, "_32_", 4) != 0) { |
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53 | continue; |
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54 | } |
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55 | |
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56 | /* Got signature, check length */ |
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57 | if (*(ucp + 9) != 1) { |
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58 | continue; |
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59 | } |
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60 | |
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61 | /* Verify checksum */ |
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62 | sum = 0; |
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63 | for (i=0; i<16; i++) { |
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64 | sum += *(ucp+i); |
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65 | } |
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66 | |
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67 | if (sum == 0) { |
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68 | /* found */ |
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69 | break; |
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70 | } |
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71 | } |
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72 | |
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73 | if (ucp >= (unsigned char *)0xFFFFF) { |
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74 | /* BIOS-32 not found */ |
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75 | return PCIB_ERR_NOTPRESENT; |
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76 | } |
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77 | |
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78 | /* BIOS-32 found, let us find PCI BIOS */ |
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79 | ucp += 4; |
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80 | |
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81 | pcibExchg[0] = *(unsigned int *)ucp; |
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82 | |
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83 | asm (" pusha"); /* Push all registers */ |
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84 | asm (" movl pcibExchg, %edi"); /* Move entry point to esi */ |
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85 | asm (" movl $0x49435024, %eax"); /* Move signature to eax */ |
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86 | asm (" xorl %ebx, %ebx"); /* Zero ebx */ |
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87 | asm (" pushl %cs"); |
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88 | asm (" call *%edi"); /* Call entry */ |
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89 | asm (" movl %eax, pcibExchg"); |
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90 | asm (" movl %ebx, pcibExchg+4"); |
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91 | asm (" movl %ecx, pcibExchg+8"); |
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92 | asm (" movl %edx, pcibExchg+12"); |
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93 | asm (" popa"); |
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94 | |
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95 | if ((pcibExchg[0] & 0xff) != 0) { |
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96 | /* Not found */ |
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97 | return PCIB_ERR_NOTPRESENT; |
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98 | } |
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99 | |
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100 | /* Found PCI entry point */ |
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101 | pcibEntry = pcibExchg[1] + pcibExchg[3]; |
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102 | |
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103 | /* Let us check whether PCI bios is present */ |
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104 | pcibExchg[0] = pcibEntry; |
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105 | |
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106 | asm(" pusha"); |
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107 | asm(" movl pcibExchg, %edi"); |
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108 | asm(" movb $0xb1, %ah"); |
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109 | asm(" movb $0x01, %al"); |
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110 | asm(" pushl %cs"); |
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111 | asm(" call *%edi"); |
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112 | asm(" movl %eax, pcibExchg"); |
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113 | asm(" movl %ebx, pcibExchg+4"); |
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114 | asm(" movl %ecx, pcibExchg+8"); |
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115 | asm(" movl %edx, pcibExchg+12"); |
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116 | asm(" popa"); |
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117 | |
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118 | if ((pcibExchg[0] & 0xff00) != 0) { |
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119 | /* Not found */ |
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120 | return PCIB_ERR_NOTPRESENT; |
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121 | } |
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122 | |
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123 | if (pcibExchg[3] != 0x20494350) { |
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124 | /* Signature does not match */ |
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125 | return PCIB_ERR_NOTPRESENT; |
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126 | } |
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127 | |
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128 | /* Success */ |
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129 | |
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130 | pcibInitialized = 1; |
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131 | return PCIB_ERR_SUCCESS; |
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132 | } |
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133 | |
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134 | /* |
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135 | * Find specified device and return its signature: combination |
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136 | * of bus number, device number and function number |
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137 | */ |
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138 | int |
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139 | pcib_find_by_devid(int vendorId, int devId, int idx, int *sig) |
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140 | { |
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141 | if (!pcibInitialized) { |
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142 | return PCIB_ERR_UNINITIALIZED; |
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143 | } |
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144 | |
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145 | pcibExchg[0] = pcibEntry; |
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146 | pcibExchg[1] = vendorId; |
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147 | pcibExchg[2] = devId; |
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148 | pcibExchg[3] = idx; |
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149 | |
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150 | asm(" pusha"); |
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151 | asm(" movl pcibExchg, %edi"); |
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152 | asm(" movb $0xb1, %ah"); |
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153 | asm(" movb $0x02, %al"); |
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154 | asm(" movl pcibExchg+4, %edx"); |
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155 | asm(" movl pcibExchg+8, %ecx"); |
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156 | asm(" movl pcibExchg+12, %esi"); |
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157 | asm(" pushl %cs"); |
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158 | asm(" call *%edi"); |
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159 | asm(" movl %eax, pcibExchg"); |
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160 | asm(" movl %ebx, pcibExchg+4"); |
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161 | asm(" popa"); |
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162 | |
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163 | *sig = pcibExchg[1] & 0xffff; |
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164 | |
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165 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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166 | } |
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167 | |
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168 | int |
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169 | pci_find_device( |
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170 | unsigned short vendorid, |
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171 | unsigned short deviceid, |
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172 | int instance, |
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173 | int *pbus, |
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174 | int *pdev, |
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175 | int *pfun |
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176 | ) |
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177 | { |
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178 | int status; |
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179 | int sig = 0; |
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180 | |
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181 | status = pcib_find_by_devid( vendorid, deviceid, instance, &sig ); |
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182 | |
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183 | *pbus = PCIB_DEVSIG_BUS(sig); |
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184 | *pdev = PCIB_DEVSIG_DEV(sig); |
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185 | *pfun = PCIB_DEVSIG_FUNC(sig); |
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186 | return status; |
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187 | } |
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188 | |
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189 | /* |
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190 | * Find specified class code return device signature: combination |
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191 | * of bus number, device number and function number |
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192 | */ |
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193 | int |
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194 | pcib_find_by_class(int classCode, int idx, int *sig) |
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195 | { |
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196 | if (!pcibInitialized) { |
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197 | return PCIB_ERR_UNINITIALIZED; |
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198 | } |
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199 | |
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200 | pcibExchg[0] = pcibEntry; |
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201 | pcibExchg[1] = classCode; |
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202 | pcibExchg[2] = idx; |
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203 | |
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204 | asm(" pusha"); |
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205 | asm(" movl pcibExchg, %edi"); |
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206 | asm(" movb $0xb1, %ah"); |
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207 | asm(" movb $0x03, %al"); |
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208 | asm(" movl pcibExchg+4, %ecx"); |
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209 | asm(" movl pcibExchg+8, %esi"); |
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210 | asm(" pushl %cs"); |
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211 | asm(" call *%edi"); |
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212 | asm(" movl %eax, pcibExchg"); |
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213 | asm(" movl %ebx, pcibExchg+4"); |
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214 | asm(" popa"); |
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215 | |
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216 | if ((pcibExchg[0] & 0xff00) != 0) { |
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217 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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218 | } |
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219 | |
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220 | *sig = pcibExchg[1] & 0xffff; |
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221 | |
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222 | return PCIB_ERR_SUCCESS; |
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223 | } |
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224 | |
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225 | #define PCI_MULTI_FUNCTION 0x80 |
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226 | |
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227 | static unsigned8 ucBusCount = 0xff; |
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228 | |
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229 | unsigned char |
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230 | pci_bus_count() |
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231 | { |
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232 | if ( ucBusCount == 0xff ) { |
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233 | unsigned char bus; |
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234 | unsigned char dev; |
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235 | unsigned char hd = 0; |
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236 | unsigned int d = 0; |
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237 | int sig; |
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238 | |
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239 | ucBusCount = 0; |
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240 | |
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241 | for (bus=0; bus< 0xff; bus++) { |
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242 | for (dev=0; dev<PCI_MAX_DEVICES; dev++) { |
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243 | sig = PCIB_DEVSIG_MAKE(bus,dev,0); |
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244 | pcib_conf_read32(sig, PCI_VENDOR_ID, &d); |
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245 | |
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246 | if ( d != -1 ) { |
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247 | pcib_conf_read32(sig, PCI_CLASS_REVISION, &d); |
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248 | |
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249 | if ( (d >> 16) == PCI_CLASS_BRIDGE_PCI ) { |
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250 | pcib_conf_read8(sig, PCI_SUBORDINATE_BUS, &hd); |
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251 | |
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252 | if ( hd > ucBusCount ) |
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253 | ucBusCount = hd; |
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254 | } |
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255 | } |
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256 | } |
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257 | } |
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258 | |
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259 | if ( ucBusCount == 0 ) { |
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260 | printk("pci_bus_count() found 0 busses, assuming 1\n"); |
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261 | ucBusCount = 1; |
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262 | } else if ( ucBusCount == 0xff ) { |
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263 | printk("pci_bus_count() found 0xff busses, assuming 1\n"); |
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264 | ucBusCount = 1; |
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265 | } |
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266 | } |
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267 | |
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268 | return ucBusCount; |
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269 | } |
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270 | |
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271 | |
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272 | int |
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273 | BSP_pciFindDevice( unsigned short vendorid, unsigned short deviceid, |
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274 | int instance, int *pbus, int *pdev, int *pfun ) |
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275 | { |
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276 | int sig; |
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277 | unsigned int d = 0; |
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278 | unsigned short s = 0; |
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279 | unsigned char bus; |
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280 | unsigned char dev; |
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281 | unsigned char fun; |
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282 | unsigned char hd = 0; |
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283 | |
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284 | for (bus=0; bus<pci_bus_count(); bus++) { |
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285 | for (dev=0; dev<PCI_MAX_DEVICES; dev++) { |
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286 | sig = PCIB_DEVSIG_MAKE(bus,dev,0); |
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287 | |
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288 | /* pci_read_config_byte(bus,dev,0, PCI_HEADER_TYPE, &hd); */ |
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289 | pcib_conf_read8(sig, 0xe, &hd); |
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290 | |
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291 | hd = (hd & PCI_MULTI_FUNCTION ? PCI_MAX_FUNCTIONS : 1); |
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292 | |
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293 | for (fun=0; fun<hd; fun++) { |
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294 | /* |
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295 | * The last devfn id/slot is special; must skip it |
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296 | */ |
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297 | if ( PCI_MAX_DEVICES-1 == dev && PCI_MAX_FUNCTIONS-1 == fun ) |
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298 | break; |
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299 | |
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300 | /*pci_read_config_dword(bus,dev,fun,PCI_VENDOR_ID,&d); */ |
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301 | pcib_conf_read32(sig, 0, &d); |
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302 | if ( d == -1 ) |
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303 | continue; |
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304 | #ifdef PCI_DEBUG |
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305 | printk("BSP_pciFindDevice: found 0x%08x at %d/%d/%d\n",d,bus,dev,fun); |
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306 | #endif |
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307 | /* pci_read_config_word(bus,dev,fun,PCI_VENDOR_ID,&s); */ |
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308 | pcib_conf_read16(sig, 0, &s); |
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309 | if (vendorid != s) |
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310 | continue; |
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311 | |
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312 | /* pci_read_config_word(bus,dev,fun,PCI_DEVICE_ID,&s); */ |
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313 | pcib_conf_read16(sig, 0x2, &s); |
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314 | if (deviceid == s) { |
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315 | if (instance--) continue; |
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316 | *pbus=bus; |
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317 | *pdev=dev; |
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318 | *pfun=fun; |
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319 | return 0; |
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320 | } |
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321 | } |
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322 | } |
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323 | } |
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324 | return -1; |
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325 | } |
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326 | |
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327 | /* |
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328 | * Generate Special Cycle |
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329 | */ |
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330 | int |
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331 | pcib_special_cycle(int busNo, int data) |
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332 | { |
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333 | if (!pcibInitialized) { |
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334 | return PCIB_ERR_UNINITIALIZED; |
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335 | } |
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336 | |
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337 | pcibExchg[0] = pcibEntry; |
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338 | pcibExchg[1] = busNo << 8; |
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339 | pcibExchg[2] = data; |
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340 | |
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341 | asm(" pusha"); |
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342 | asm(" movl pcibExchg, %edi"); |
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343 | asm(" movb $0xb1, %ah"); |
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344 | asm(" movb $0x06, %al"); |
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345 | asm(" movl pcibExchg+4, %ebx"); |
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346 | asm(" movl pcibExchg+8, %edx"); |
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347 | asm(" pushl %cs"); |
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348 | asm(" call *%edi"); |
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349 | asm(" movl %eax, pcibExchg"); |
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350 | asm(" movl %ebx, pcibExchg+4"); |
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351 | asm(" popa"); |
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352 | |
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353 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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354 | } |
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355 | |
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356 | |
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357 | /* |
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358 | * Read byte from config space |
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359 | */ |
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360 | int |
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361 | pcib_conf_read8(int sig, int off, unsigned char *data) |
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362 | { |
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363 | if (!pcibInitialized) { |
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364 | return PCIB_ERR_UNINITIALIZED; |
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365 | } |
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366 | |
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367 | pcibExchg[0] = pcibEntry; |
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368 | pcibExchg[1] = sig; |
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369 | pcibExchg[2] = off; |
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370 | |
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371 | asm(" pusha"); |
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372 | asm(" movl pcibExchg, %esi"); |
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373 | asm(" movb $0xb1, %ah"); |
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374 | asm(" movb $0x08, %al"); |
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375 | asm(" movl pcibExchg+4, %ebx"); |
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376 | asm(" movl pcibExchg+8, %edi"); |
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377 | asm(" pushl %cs"); |
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378 | asm(" call *%esi"); |
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379 | asm(" movl %eax, pcibExchg"); |
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380 | asm(" movl %ecx, pcibExchg+4"); |
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381 | asm(" popa"); |
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382 | |
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383 | if ((pcibExchg[0] & 0xff00) != 0) { |
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384 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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385 | } |
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386 | |
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387 | *data = (unsigned char)pcibExchg[1] & 0xff; |
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388 | |
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389 | return PCIB_ERR_SUCCESS; |
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390 | } |
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391 | |
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392 | |
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393 | /* |
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394 | * Read word from config space |
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395 | */ |
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396 | int |
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397 | pcib_conf_read16(int sig, int off, unsigned short *data) |
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398 | { |
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399 | if (!pcibInitialized) { |
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400 | return PCIB_ERR_UNINITIALIZED; |
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401 | } |
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402 | |
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403 | pcibExchg[0] = pcibEntry; |
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404 | pcibExchg[1] = sig; |
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405 | pcibExchg[2] = off; |
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406 | |
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407 | asm(" pusha"); |
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408 | asm(" movl pcibExchg, %esi"); |
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409 | asm(" movb $0xb1, %ah"); |
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410 | asm(" movb $0x09, %al"); |
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411 | asm(" movl pcibExchg+4, %ebx"); |
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412 | asm(" movl pcibExchg+8, %edi"); |
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413 | asm(" pushl %cs"); |
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414 | asm(" call *%esi"); |
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415 | asm(" movl %eax, pcibExchg"); |
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416 | asm(" movl %ecx, pcibExchg+4"); |
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417 | asm(" popa"); |
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418 | |
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419 | if ((pcibExchg[0] & 0xff00) != 0) { |
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420 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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421 | } |
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422 | |
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423 | *data = (unsigned short)pcibExchg[1] & 0xffff; |
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424 | |
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425 | return PCIB_ERR_SUCCESS; |
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426 | } |
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427 | |
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428 | |
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429 | /* |
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430 | * Read dword from config space |
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431 | */ |
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432 | int |
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433 | pcib_conf_read32(int sig, int off, unsigned int *data) |
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434 | { |
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435 | if (!pcibInitialized) { |
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436 | return PCIB_ERR_UNINITIALIZED; |
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437 | } |
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438 | |
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439 | pcibExchg[0] = pcibEntry; |
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440 | pcibExchg[1] = sig; |
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441 | pcibExchg[2] = off; |
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442 | |
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443 | asm(" pusha"); |
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444 | asm(" movl pcibExchg, %esi"); |
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445 | asm(" movb $0xb1, %ah"); |
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446 | asm(" movb $0x0a, %al"); |
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447 | asm(" movl pcibExchg+4, %ebx"); |
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448 | asm(" movl pcibExchg+8, %edi"); |
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449 | asm(" pushl %cs"); |
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450 | asm(" call *%esi"); |
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451 | asm(" movl %eax, pcibExchg"); |
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452 | asm(" movl %ecx, pcibExchg+4"); |
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453 | asm(" popa"); |
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454 | |
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455 | if ((pcibExchg[0] & 0xff00) != 0) { |
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456 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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457 | } |
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458 | |
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459 | *data = (unsigned int)pcibExchg[1]; |
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460 | |
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461 | return PCIB_ERR_SUCCESS; |
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462 | } |
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463 | |
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464 | |
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465 | /* |
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466 | * Write byte into config space |
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467 | */ |
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468 | int |
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469 | pcib_conf_write8(int sig, int off, unsigned int data) |
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470 | { |
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471 | if (!pcibInitialized) { |
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472 | return PCIB_ERR_UNINITIALIZED; |
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473 | } |
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474 | |
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475 | pcibExchg[0] = pcibEntry; |
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476 | pcibExchg[1] = sig; |
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477 | pcibExchg[2] = off; |
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478 | pcibExchg[3] = data & 0xff; |
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479 | |
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480 | asm(" pusha"); |
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481 | asm(" movl pcibExchg, %esi"); |
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482 | asm(" movb $0xb1, %ah"); |
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483 | asm(" movb $0x0b, %al"); |
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484 | asm(" movl pcibExchg+4, %ebx"); |
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485 | asm(" movl pcibExchg+8, %edi"); |
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486 | asm(" movl pcibExchg+12, %ecx"); |
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487 | asm(" pushl %cs"); |
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488 | asm(" call *%esi"); |
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489 | asm(" movl %eax, pcibExchg"); |
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490 | asm(" popa"); |
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491 | |
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492 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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493 | } |
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494 | |
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495 | /* |
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496 | * Write word into config space |
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497 | */ |
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498 | int |
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499 | pcib_conf_write16(int sig, int off, unsigned int data) |
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500 | { |
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501 | if (!pcibInitialized) { |
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502 | return PCIB_ERR_UNINITIALIZED; |
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503 | } |
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504 | |
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505 | pcibExchg[0] = pcibEntry; |
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506 | pcibExchg[1] = sig; |
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507 | pcibExchg[2] = off; |
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508 | pcibExchg[3] = data & 0xffff; |
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509 | |
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510 | asm(" pusha"); |
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511 | asm(" movl pcibExchg, %esi"); |
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512 | asm(" movb $0xb1, %ah"); |
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513 | asm(" movb $0x0c, %al"); |
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514 | asm(" movl pcibExchg+4, %ebx"); |
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515 | asm(" movl pcibExchg+8, %edi"); |
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516 | asm(" movl pcibExchg+12, %ecx"); |
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517 | asm(" pushl %cs"); |
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518 | asm(" call *%esi"); |
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519 | asm(" movl %eax, pcibExchg"); |
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520 | asm(" popa"); |
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521 | |
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522 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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523 | } |
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524 | |
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525 | |
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526 | |
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527 | /* |
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528 | * Write dword into config space |
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529 | */ |
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530 | int |
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531 | pcib_conf_write32(int sig, int off, unsigned int data) |
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532 | { |
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533 | if (!pcibInitialized){ |
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534 | return PCIB_ERR_UNINITIALIZED; |
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535 | } |
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536 | |
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537 | pcibExchg[0] = pcibEntry; |
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538 | pcibExchg[1] = sig; |
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539 | pcibExchg[2] = off; |
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540 | pcibExchg[3] = data; |
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541 | |
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542 | asm(" pusha"); |
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543 | asm(" movl pcibExchg, %esi"); |
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544 | asm(" movb $0xb1, %ah"); |
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545 | asm(" movb $0x0d, %al"); |
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546 | asm(" movl pcibExchg+4, %ebx"); |
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547 | asm(" movl pcibExchg+8, %edi"); |
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548 | asm(" movl pcibExchg+12, %ecx"); |
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549 | asm(" pushl %cs"); |
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550 | asm(" call *%esi"); |
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551 | asm(" movl %eax, pcibExchg"); |
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552 | asm(" popa"); |
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553 | |
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554 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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555 | } |
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556 | |
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557 | |
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558 | static int |
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559 | pcib_convert_err(int err) |
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560 | { |
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561 | switch(err & 0xff){ |
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562 | case 0: |
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563 | return PCIB_ERR_SUCCESS; |
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564 | case 0x81: |
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565 | return PCIB_ERR_NOFUNC; |
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566 | case 0x83: |
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567 | return PCIB_ERR_BADVENDOR; |
---|
568 | case 0x86: |
---|
569 | return PCIB_ERR_DEVNOTFOUND; |
---|
570 | case 0x87: |
---|
571 | return PCIB_ERR_BADREG; |
---|
572 | default: |
---|
573 | break; |
---|
574 | } |
---|
575 | return PCIB_ERR_NOFUNC; |
---|
576 | } |
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577 | |
---|
578 | static int |
---|
579 | indirect_pci_read_config_byte( |
---|
580 | unsigned char bus, |
---|
581 | unsigned char slot, |
---|
582 | unsigned char fun, |
---|
583 | unsigned char offset, |
---|
584 | unsigned char *val |
---|
585 | ) |
---|
586 | { |
---|
587 | int sig; |
---|
588 | |
---|
589 | sig = PCIB_DEVSIG_MAKE(bus,slot,fun); |
---|
590 | pcib_conf_read8(sig, offset, val); |
---|
591 | return PCIBIOS_SUCCESSFUL; |
---|
592 | } |
---|
593 | |
---|
594 | static int |
---|
595 | indirect_pci_read_config_word( |
---|
596 | unsigned char bus, |
---|
597 | unsigned char slot, |
---|
598 | unsigned char fun, |
---|
599 | unsigned char offset, |
---|
600 | unsigned short *val |
---|
601 | ) |
---|
602 | { |
---|
603 | int sig; |
---|
604 | |
---|
605 | sig = PCIB_DEVSIG_MAKE(bus,slot,fun); |
---|
606 | pcib_conf_read16(sig, offset, val); |
---|
607 | return PCIBIOS_SUCCESSFUL; |
---|
608 | } |
---|
609 | |
---|
610 | static int |
---|
611 | indirect_pci_read_config_dword( |
---|
612 | unsigned char bus, |
---|
613 | unsigned char slot, |
---|
614 | unsigned char fun, |
---|
615 | unsigned char offset, |
---|
616 | unsigned int *val |
---|
617 | ) |
---|
618 | { |
---|
619 | int sig; |
---|
620 | |
---|
621 | sig = PCIB_DEVSIG_MAKE(bus,slot,fun); |
---|
622 | pcib_conf_read32(sig, offset, val); |
---|
623 | return PCIBIOS_SUCCESSFUL; |
---|
624 | } |
---|
625 | |
---|
626 | static int |
---|
627 | indirect_pci_write_config_byte( |
---|
628 | unsigned char bus, |
---|
629 | unsigned char slot, |
---|
630 | unsigned char fun, |
---|
631 | unsigned char offset, |
---|
632 | unsigned char val |
---|
633 | ) |
---|
634 | { |
---|
635 | int sig; |
---|
636 | |
---|
637 | sig = PCIB_DEVSIG_MAKE(bus,slot,fun); |
---|
638 | pcib_conf_write8(sig, offset, val); |
---|
639 | return PCIBIOS_SUCCESSFUL; |
---|
640 | } |
---|
641 | |
---|
642 | static int |
---|
643 | indirect_pci_write_config_word( |
---|
644 | unsigned char bus, |
---|
645 | unsigned char slot, |
---|
646 | unsigned char fun, |
---|
647 | unsigned char offset, |
---|
648 | unsigned short val |
---|
649 | ) |
---|
650 | { |
---|
651 | int sig; |
---|
652 | |
---|
653 | sig = PCIB_DEVSIG_MAKE(bus,slot,fun); |
---|
654 | pcib_conf_write16(sig, offset, val); |
---|
655 | return PCIBIOS_SUCCESSFUL; |
---|
656 | } |
---|
657 | |
---|
658 | static int |
---|
659 | indirect_pci_write_config_dword( |
---|
660 | unsigned char bus, |
---|
661 | unsigned char slot, |
---|
662 | unsigned char fun, |
---|
663 | unsigned char offset, |
---|
664 | unsigned int val |
---|
665 | ) |
---|
666 | { |
---|
667 | int sig; |
---|
668 | |
---|
669 | sig = PCIB_DEVSIG_MAKE(bus,slot,fun); |
---|
670 | pcib_conf_write32(sig, offset, val); |
---|
671 | return PCIBIOS_SUCCESSFUL; |
---|
672 | } |
---|
673 | |
---|
674 | const pci_config_access_functions pci_indirect_functions = { |
---|
675 | indirect_pci_read_config_byte, |
---|
676 | indirect_pci_read_config_word, |
---|
677 | indirect_pci_read_config_dword, |
---|
678 | indirect_pci_write_config_byte, |
---|
679 | indirect_pci_write_config_word, |
---|
680 | indirect_pci_write_config_dword |
---|
681 | }; |
---|
682 | |
---|
683 | pci_config BSP_pci_configuration = { |
---|
684 | (volatile unsigned char*)0, |
---|
685 | (volatile unsigned char*)0, |
---|
686 | &pci_indirect_functions |
---|
687 | }; |
---|