1 | /* |
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2 | * Copyright (c) 2011 Aeroflex Gaisler |
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3 | * |
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4 | * BSD license: |
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5 | * |
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6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
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7 | * of this software and associated documentation files (the "Software"), to deal |
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8 | * in the Software without restriction, including without limitation the rights |
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9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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10 | * copies of the Software, and to permit persons to whom the Software is |
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11 | * furnished to do so, subject to the following conditions: |
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12 | * |
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13 | * The above copyright notice and this permission notice shall be included in |
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14 | * all copies or substantial portions of the Software. |
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15 | * |
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16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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22 | * THE SOFTWARE. |
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23 | */ |
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24 | |
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25 | |
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26 | #include <asm-leon/amba.h> |
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27 | #undef AMBA_TYPE_AHBIO_ADDR |
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28 | #include <asm-leon/lambapp.h> |
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29 | #include <string.h> |
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30 | |
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31 | #define AMBA_CONF_AREA 0xff000 |
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32 | #define AMBA_AHB_SLAVE_CONF_AREA (1 << 11) |
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33 | #define AMBA_APB_SLAVES 16 |
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34 | |
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35 | #define DPRINTF(p) printf p |
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36 | |
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37 | /* Allocate */ |
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38 | struct ambapp_dev_hdr * |
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39 | ambapp_alloc_dev_struct (int dev_type) |
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40 | { |
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41 | int size = sizeof (struct ambapp_dev_hdr); |
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42 | struct ambapp_dev_hdr *dev; |
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43 | |
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44 | if (dev_type == DEV_APB_SLV) |
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45 | { |
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46 | size += sizeof (struct ambapp_apb_info); |
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47 | } |
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48 | else |
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49 | { |
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50 | /* AHB */ |
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51 | size += sizeof (struct ambapp_ahb_info); |
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52 | } |
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53 | dev = malloc (size); |
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54 | if (dev == NULL) |
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55 | return NULL; |
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56 | memset (dev, 0, size); |
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57 | dev->devinfo = (void *) (dev + 1); |
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58 | dev->dev_type = dev_type; |
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59 | return dev; |
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60 | } |
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61 | |
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62 | unsigned int |
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63 | ambapp_addr_from (struct ambapp_mmap *mmaps, unsigned int address) |
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64 | { |
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65 | /* no translation? */ |
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66 | if (!mmaps) |
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67 | return address; |
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68 | |
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69 | while (mmaps->size) |
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70 | { |
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71 | if ((address >= mmaps->remote_adr) |
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72 | && (address <= (mmaps->remote_adr + (mmaps->size - 1)))) |
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73 | { |
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74 | return (address - mmaps->remote_adr) + mmaps->local_adr; |
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75 | } |
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76 | mmaps++; |
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77 | } |
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78 | return 1; |
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79 | } |
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80 | |
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81 | void |
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82 | ambapp_ahb_dev_init (unsigned int ioarea, |
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83 | struct ambapp_mmap *mmaps, |
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84 | struct ambapp_pnp_ahb *ahb, struct ambapp_dev_hdr *dev) |
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85 | { |
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86 | int bar; |
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87 | struct ambapp_ahb_info *ahb_info; |
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88 | unsigned int addr, mask, mbar; |
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89 | |
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90 | /* Setup device struct */ |
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91 | dev->vendor = ambapp_pnp_vendor (ahb->id); |
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92 | dev->device = ambapp_pnp_device (ahb->id); |
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93 | ahb_info = dev->devinfo; |
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94 | ahb_info->ver = ambapp_pnp_ver (ahb->id); |
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95 | ahb_info->irq = ambapp_pnp_irq (ahb->id); |
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96 | ahb_info->custom[0] = (unsigned int) ahb->custom[0]; |
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97 | ahb_info->custom[1] = (unsigned int) ahb->custom[1]; |
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98 | ahb_info->custom[2] = (unsigned int) ahb->custom[2]; |
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99 | |
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100 | DPRINTF (("+AHB device %d:%d\n", dev->device, dev->vendor)); |
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101 | |
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102 | /* Memory BARs */ |
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103 | for (bar = 0; bar < 4; bar++) |
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104 | { |
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105 | mbar = ahb->mbar[bar]; |
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106 | if (mbar == 0) |
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107 | { |
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108 | addr = 0; |
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109 | mask = 0; |
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110 | } |
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111 | else |
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112 | { |
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113 | addr = ambapp_pnp_start (mbar); |
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114 | if (ambapp_pnp_mbar_type (mbar) == AMBA_TYPE_AHBIO) |
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115 | { |
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116 | /* AHB I/O area is releative IO_AREA */ |
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117 | addr = AMBA_TYPE_AHBIO_ADDR (addr, ioarea); |
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118 | mask = |
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119 | (((unsigned int) (ambapp_pnp_mbar_mask ((~mbar)) << 8) | |
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120 | 0xff)) + 1; |
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121 | } |
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122 | else |
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123 | { |
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124 | /* AHB memory area, absolute address */ |
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125 | addr = ambapp_addr_from (mmaps, addr); |
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126 | mask = |
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127 | (~((unsigned int) (ambapp_pnp_mbar_mask (mbar) << 20))) + 1; |
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128 | } |
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129 | } |
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130 | ahb_info->start[bar] = addr; |
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131 | ahb_info->mask[bar] = mask; |
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132 | } |
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133 | } |
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134 | |
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135 | void |
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136 | ambapp_apb_dev_init (unsigned int base, |
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137 | struct ambapp_mmap *mmaps, |
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138 | struct ambapp_pnp_apb *apb, struct ambapp_dev_hdr *dev) |
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139 | { |
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140 | struct ambapp_apb_info *apb_info; |
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141 | |
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142 | /* Setup device struct */ |
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143 | dev->vendor = ambapp_pnp_vendor (apb->id); |
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144 | dev->device = ambapp_pnp_device (apb->id); |
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145 | apb_info = dev->devinfo; |
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146 | apb_info->ver = ambapp_pnp_ver (apb->id); |
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147 | apb_info->irq = ambapp_pnp_irq (apb->id); |
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148 | apb_info->start = ambapp_pnp_apb_start (apb->iobar, base); |
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149 | apb_info->mask = ambapp_pnp_apb_mask (apb->iobar); |
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150 | |
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151 | DPRINTF (("+APB device %d:%d\n", dev->device, dev->vendor)); |
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152 | |
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153 | |
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154 | } |
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155 | |
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156 | #define MAX_NUM_BUSES 16 |
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157 | void |
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158 | ambapp_add_scanned_bus (unsigned int *ioareas, unsigned int ioarea) |
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159 | { |
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160 | int i; |
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161 | for (i = 0; i < MAX_NUM_BUSES; i++) |
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162 | { |
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163 | if (ioareas[i] == 0) |
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164 | { |
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165 | ioareas[i] = ioarea; |
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166 | return; |
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167 | } |
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168 | } |
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169 | } |
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170 | |
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171 | int |
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172 | ambapp_has_been_scanned (unsigned int *ioareas, unsigned int ioarea) |
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173 | { |
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174 | int i; |
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175 | if (!ioareas) |
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176 | return 0; |
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177 | |
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178 | for (i = 0; i < MAX_NUM_BUSES; i++) |
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179 | { |
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180 | if (ioareas[i] == 0) |
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181 | { |
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182 | break; |
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183 | } |
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184 | else if (ioareas[i] == ioarea) |
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185 | { |
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186 | return 1; |
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187 | } |
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188 | } |
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189 | return 0; |
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190 | } |
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191 | |
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192 | int |
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193 | ambapp_scan (unsigned int ioarea, |
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194 | struct ambapp_dev_hdr *parent, |
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195 | struct ambapp_mmap *mmaps, |
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196 | void *(*memfunc) (void *dest, const void *src, int n), |
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197 | struct ambapp_dev_hdr **root, void *internal) |
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198 | { |
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199 | struct ambapp_pnp_ahb *ahb, ahb_buf; |
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200 | struct ambapp_pnp_apb *apb, apb_buf; |
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201 | struct ambapp_dev_hdr *dev, *prev, *prevapb, *apbdev; |
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202 | struct ambapp_ahb_info *ahb_info; |
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203 | int maxloops = 64; |
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204 | unsigned int apbbase, bridge_address; |
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205 | int i, j; |
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206 | |
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207 | DPRINTF (("Scan at 0x%08x\n", ioarea)); |
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208 | |
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209 | /* Default to memcpy() */ |
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210 | if (!memfunc) |
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211 | memfunc = (void *(*)(void *dest, const void *src, int n)) memcpy; |
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212 | |
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213 | *root = NULL; |
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214 | |
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215 | if (parent) |
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216 | { |
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217 | /* scan first bus for 64 devices, rest for 16 devices */ |
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218 | maxloops = 16; |
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219 | } |
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220 | else |
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221 | { |
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222 | DPRINTF (("+(malloc:")); |
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223 | internal = malloc (sizeof (unsigned int) * MAX_NUM_BUSES); |
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224 | DPRINTF (("0x%x)\n", internal)); |
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225 | |
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226 | if (!internal) |
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227 | return -1; |
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228 | memset (internal, 0, sizeof (unsigned int) * MAX_NUM_BUSES); |
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229 | |
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230 | ambapp_add_scanned_bus (internal, ioarea); |
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231 | } |
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232 | |
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233 | prev = parent; |
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234 | |
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235 | /* AHB MASTERS */ |
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236 | ahb = (struct ambapp_pnp_ahb *) (ioarea | AMBA_CONF_AREA); |
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237 | for (i = 0; i < maxloops; i++) |
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238 | { |
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239 | memfunc (&ahb_buf, ahb, sizeof (struct ambapp_pnp_ahb)); |
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240 | if (ahb_buf.id != 0) |
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241 | { |
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242 | /* A AHB device present here */ |
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243 | dev = ambapp_alloc_dev_struct (DEV_AHB_MST); |
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244 | if (!dev) |
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245 | return -1; |
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246 | |
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247 | ambapp_ahb_dev_init (ioarea, mmaps, &ahb_buf, dev); |
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248 | |
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249 | if (*root == NULL) |
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250 | *root = dev; |
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251 | |
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252 | if (prev != parent) |
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253 | prev->next = dev; |
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254 | dev->prev = prev; |
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255 | prev = dev; |
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256 | } |
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257 | ahb++; |
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258 | } |
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259 | |
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260 | /* AHB SLAVES */ |
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261 | ahb = |
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262 | (struct ambapp_pnp_ahb *) (ioarea | AMBA_CONF_AREA | |
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263 | AMBA_AHB_SLAVE_CONF_AREA); |
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264 | for (i = 0; i < maxloops; i++) |
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265 | { |
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266 | memfunc (&ahb_buf, ahb, sizeof (struct ambapp_pnp_ahb)); |
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267 | if (ahb_buf.id != 0) |
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268 | { |
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269 | /* A AHB device present here */ |
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270 | dev = ambapp_alloc_dev_struct (DEV_AHB_SLV); |
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271 | if (!dev) |
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272 | return -1; |
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273 | |
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274 | ambapp_ahb_dev_init (ioarea, mmaps, &ahb_buf, dev); |
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275 | |
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276 | if (prev != parent) |
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277 | prev->next = dev; |
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278 | dev->prev = prev; |
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279 | prev = dev; |
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280 | |
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281 | /* Is it a AHB/AHB Bridge ? */ |
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282 | if ((dev->device == GAISLER_AHB2AHB) |
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283 | && (dev->vendor == VENDOR_GAISLER)) |
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284 | { |
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285 | /* AHB/AHB Bridge Found, recurse down the Bridge */ |
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286 | ahb_info = dev->devinfo; |
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287 | if (ahb_info->ver) |
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288 | { |
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289 | bridge_address = |
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290 | ambapp_addr_from (mmaps, ahb_info->custom[1]); |
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291 | |
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292 | DPRINTF (("+(AHBAHB:0x%x)\n", bridge_address)); |
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293 | |
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294 | /* Makes sure bus only scanned once */ |
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295 | if (ambapp_has_been_scanned (internal, bridge_address) == |
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296 | NULL) |
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297 | { |
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298 | ambapp_add_scanned_bus (internal, bridge_address); |
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299 | if (ambapp_scan |
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300 | (bridge_address, dev, mmaps, memfunc, |
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301 | &dev->children, internal)) |
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302 | return -1; |
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303 | } |
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304 | } |
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305 | } |
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306 | else if ((dev->device == GAISLER_APBMST) |
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307 | && (dev->vendor == VENDOR_GAISLER)) |
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308 | { |
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309 | /* AHB/APB Bridge Found, add the APB devices to this AHB Slave's children */ |
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310 | prevapb = dev; |
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311 | ahb_info = dev->devinfo; |
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312 | apbbase = ahb_info->start[0]; |
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313 | apb = (struct ambapp_pnp_apb *) (apbbase | AMBA_CONF_AREA); |
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314 | for (j = 0; j < AMBA_APB_SLAVES; j++) |
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315 | { |
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316 | memfunc (&apb_buf, apb, sizeof (struct ambapp_pnp_apb)); |
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317 | if (apb_buf.id) |
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318 | { |
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319 | apbdev = ambapp_alloc_dev_struct (DEV_APB_SLV); |
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320 | if (!dev) |
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321 | return -1; |
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322 | |
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323 | ambapp_apb_dev_init (apbbase, mmaps, &apb_buf, apbdev); |
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324 | |
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325 | if (prevapb != dev) |
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326 | prevapb->next = apbdev; |
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327 | else |
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328 | dev->children = apbdev; |
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329 | apbdev->prev = prevapb; |
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330 | prevapb = apbdev; |
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331 | } |
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332 | apb++; |
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333 | } |
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334 | } |
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335 | } |
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336 | ahb++; |
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337 | } |
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338 | |
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339 | if (parent == NULL) |
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340 | { |
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341 | free (internal); |
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342 | } |
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343 | |
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344 | return 0; |
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345 | } |
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346 | |
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347 | /* Match search options againt device */ |
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348 | int |
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349 | ambapp_dev_match_options (struct ambapp_dev_hdr *dev, unsigned int options, |
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350 | int vendor, int device) |
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351 | { |
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352 | if ((((options & (OPTIONS_ALL_DEVS)) == OPTIONS_ALL_DEVS) || /* Match TYPE */ |
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353 | ((options & OPTIONS_AHB_MSTS) && (dev->dev_type == DEV_AHB_MST)) || ((options & OPTIONS_AHB_SLVS) && (dev->dev_type == DEV_AHB_SLV)) || ((options & OPTIONS_APB_SLVS) && (dev->dev_type == DEV_APB_SLV))) && ((vendor == -1) || (vendor == dev->vendor)) && /* Match ID */ |
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354 | ((device == -1) || (device == dev->device)) && (((options & OPTIONS_ALL) == OPTIONS_ALL) || /* Match Allocated State */ |
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355 | ((options & |
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356 | OPTIONS_FREE) |
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357 | && DEV_IS_FREE (dev)) |
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358 | || |
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359 | ((options & |
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360 | OPTIONS_ALLOCATED) |
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361 | && |
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362 | DEV_IS_ALLOCATED |
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363 | (dev)))) |
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364 | { |
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365 | return 1; |
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366 | } |
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367 | return 0; |
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368 | } |
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369 | |
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370 | /* If device is an APB bridge all devices on the APB bridge is processed */ |
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371 | static int |
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372 | ambapp_for_each_apb (struct ambapp_dev_hdr *dev, |
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373 | unsigned int options, |
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374 | int vendor, |
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375 | int device, int maxdepth, ambapp_func_t func, void *arg) |
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376 | { |
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377 | int index; |
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378 | struct ambapp_dev_hdr *apbslv; |
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379 | |
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380 | if (maxdepth < 0) |
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381 | return 0; |
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382 | |
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383 | if (dev->children && (dev->children->dev_type == DEV_APB_SLV)) |
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384 | { |
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385 | /* Found a APB Bridge */ |
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386 | index = 0; |
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387 | apbslv = dev->children; |
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388 | while (apbslv) |
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389 | { |
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390 | if (ambapp_dev_match_options (apbslv, options, vendor, device) == 1) |
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391 | { |
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392 | if (func (apbslv, index, maxdepth, arg) == 1) |
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393 | return 1; /* Signalled stopped */ |
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394 | } |
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395 | index++; |
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396 | apbslv = apbslv->next; |
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397 | } |
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398 | } |
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399 | return 0; |
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400 | } |
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401 | |
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402 | /* Traverse the prescanned device information */ |
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403 | int |
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404 | ambapp_for_each (struct ambapp_dev_hdr *root, |
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405 | unsigned int options, |
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406 | int vendor, |
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407 | int device, int maxdepth, ambapp_func_t func, void *arg) |
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408 | { |
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409 | struct ambapp_dev_hdr *dev; |
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410 | int ahb_slave = 0; |
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411 | int index; |
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412 | |
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413 | if (maxdepth < 0) |
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414 | return 0; |
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415 | |
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416 | /* Start at device 'root' and process downwards. |
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417 | * |
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418 | * Breadth first search, search order |
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419 | * 1. AHB MSTS |
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420 | * 2. AHB SLVS |
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421 | * 3. APB SLVS on primary bus |
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422 | * 4. AHB/AHB secondary... -> step to 1. |
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423 | */ |
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424 | |
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425 | /* AHB MST / AHB SLV */ |
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426 | if (options & (OPTIONS_AHB_MSTS | OPTIONS_AHB_SLVS | OPTIONS_DEPTH_FIRST)) |
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427 | { |
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428 | index = 0; |
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429 | dev = root; |
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430 | while (dev) |
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431 | { |
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432 | if ((dev->dev_type == DEV_AHB_SLV) && !ahb_slave) |
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433 | { |
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434 | /* First AHB Slave */ |
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435 | ahb_slave = 1; |
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436 | index = 0; |
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437 | } |
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438 | |
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439 | /* Conditions must be fullfilled for function to be called */ |
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440 | if (ambapp_dev_match_options (dev, options, vendor, device) == 1) |
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441 | { |
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442 | /* Correct device and vendor ID */ |
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443 | if (func (dev, index, maxdepth, arg) == 1) |
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444 | return 1; /* Signalled stopped */ |
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445 | } |
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446 | |
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447 | if ((options & OPTIONS_DEPTH_FIRST) && (options & OPTIONS_APB_SLVS)) |
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448 | { |
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449 | /* Check is APB bridge, and process all APB Slaves in that case */ |
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450 | if (ambapp_for_each_apb |
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451 | (dev, options, vendor, device, (maxdepth - 1), func, |
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452 | arg) == 1) |
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453 | return 1; /* Signalled stopped */ |
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454 | } |
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455 | |
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456 | if (options & OPTIONS_DEPTH_FIRST) |
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457 | { |
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458 | if (dev->children && (dev->children->dev_type != DEV_APB_SLV)) |
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459 | { |
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460 | /* Found AHB Bridge, recurse */ |
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461 | if (ambapp_for_each |
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462 | (dev->children, options, vendor, device, (maxdepth - 1), |
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463 | func, arg) == 1) |
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464 | return 1; |
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465 | } |
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466 | } |
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467 | |
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468 | index++; |
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469 | dev = dev->next; |
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470 | } |
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471 | } |
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472 | |
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473 | /* Find APB Bridges */ |
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474 | if ((options & OPTIONS_APB_SLVS) && !(options & OPTIONS_DEPTH_FIRST)) |
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475 | { |
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476 | dev = root; |
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477 | while (dev) |
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478 | { |
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479 | /* Check is APB bridge, and process all APB Slaves in that case */ |
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480 | if (ambapp_for_each_apb |
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481 | (dev, options, vendor, device, (maxdepth - 1), func, arg) == 1) |
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482 | return 1; /* Signalled stopped */ |
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483 | dev = dev->next; |
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484 | } |
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485 | } |
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486 | |
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487 | /* Find AHB Bridges */ |
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488 | if (!(options & OPTIONS_DEPTH_FIRST)) |
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489 | { |
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490 | dev = root; |
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491 | while (dev) |
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492 | { |
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493 | if (dev->children && (dev->children->dev_type != DEV_APB_SLV)) |
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494 | { |
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495 | /* Found AHB Bridge, recurse */ |
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496 | if (ambapp_for_each |
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497 | (dev->children, options, vendor, device, (maxdepth - 1), |
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498 | func, arg) == 1) |
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499 | return 1; |
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500 | } |
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501 | dev = dev->next; |
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502 | } |
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503 | } |
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504 | |
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505 | return 0; |
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506 | } |
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507 | |
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508 | int |
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509 | ambapp_alloc_dev (struct ambapp_dev_hdr *dev, void *owner) |
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510 | { |
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511 | if (dev->owner) |
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512 | return -1; |
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513 | dev->owner = owner; |
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514 | return 0; |
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515 | } |
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516 | |
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517 | void |
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518 | ambapp_free_dev (struct ambapp_dev_hdr *dev) |
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519 | { |
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520 | dev->owner = NULL; |
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521 | } |
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522 | |
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523 | struct ambapp_dev_find_match_arg |
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524 | { |
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525 | int index; |
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526 | int count; |
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527 | int type; |
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528 | void *dev; |
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529 | }; |
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530 | |
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531 | /* AMBA PP find routines */ |
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532 | int |
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533 | ambapp_dev_find_match (struct ambapp_dev_hdr *dev, int index, int maxdepth, |
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534 | void *arg) |
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535 | { |
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536 | struct ambapp_dev_find_match_arg *p = arg; |
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537 | |
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538 | if (p->index == 0) |
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539 | { |
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540 | /* Found controller, stop */ |
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541 | if (p->type == DEV_APB_SLV) |
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542 | { |
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543 | *(struct ambapp_apb_info *) p->dev = |
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544 | *(struct ambapp_apb_info *) dev->devinfo; |
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545 | p->dev = ((struct ambapp_apb_info *) p->dev) + 1; |
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546 | } |
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547 | else |
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548 | { |
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549 | *(struct ambapp_ahb_info *) p->dev = |
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550 | *(struct ambapp_ahb_info *) dev->devinfo; |
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551 | p->dev = ((struct ambapp_ahb_info *) p->dev) + 1; |
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552 | } |
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553 | p->count--; |
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554 | if (p->count < 1) |
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555 | return 1; |
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556 | } |
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557 | else |
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558 | { |
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559 | p->index--; |
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560 | } |
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561 | return 0; |
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562 | } |
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563 | |
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564 | int |
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565 | ambapp_find_apbslvs_next (struct ambapp_dev_hdr *root, int vendor, int device, |
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566 | struct ambapp_apb_info *dev, int index, int maxno) |
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567 | { |
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568 | struct ambapp_dev_find_match_arg arg; |
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569 | |
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570 | arg.index = index; |
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571 | arg.count = maxno; |
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572 | arg.type = DEV_APB_SLV; /* APB */ |
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573 | arg.dev = dev; |
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574 | |
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575 | ambapp_for_each (root, (OPTIONS_ALL | OPTIONS_APB_SLVS), vendor, device, 10, |
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576 | ambapp_dev_find_match, &arg); |
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577 | |
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578 | return maxno - arg.count; |
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579 | } |
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580 | |
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581 | int |
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582 | ambapp_find_apbslv (struct ambapp_dev_hdr *root, int vendor, int device, |
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583 | struct ambapp_apb_info *dev) |
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584 | { |
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585 | return ambapp_find_apbslvs_next (root, vendor, device, dev, 0, 1); |
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586 | } |
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587 | |
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588 | int |
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589 | ambapp_find_apbslv_next (struct ambapp_dev_hdr *root, int vendor, int device, |
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590 | struct ambapp_apb_info *dev, int index) |
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591 | { |
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592 | return ambapp_find_apbslvs_next (root, vendor, device, dev, index, 1); |
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593 | } |
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594 | |
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595 | int |
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596 | ambapp_find_apbslvs (struct ambapp_dev_hdr *root, int vendor, int device, |
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597 | struct ambapp_apb_info *dev, int maxno) |
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598 | { |
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599 | return ambapp_find_apbslvs_next (root, vendor, device, dev, 0, maxno); |
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600 | } |
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601 | |
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602 | int |
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603 | ambapp_find_ahbslvs_next (struct ambapp_dev_hdr *root, int vendor, int device, |
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604 | struct ambapp_ahb_info *dev, int index, int maxno) |
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605 | { |
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606 | struct ambapp_dev_find_match_arg arg; |
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607 | |
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608 | arg.index = index; |
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609 | arg.count = maxno; |
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610 | arg.type = DEV_AHB_SLV; /* AHB SLV */ |
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611 | arg.dev = dev; |
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612 | |
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613 | ambapp_for_each (root, (OPTIONS_ALL | OPTIONS_AHB_SLVS), vendor, device, 10, |
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614 | ambapp_dev_find_match, &arg); |
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615 | |
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616 | return maxno - arg.count; |
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617 | } |
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618 | |
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619 | int |
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620 | ambapp_find_ahbslv_next (struct ambapp_dev_hdr *root, int vendor, int device, |
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621 | struct ambapp_ahb_info *dev, int index) |
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622 | { |
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623 | return ambapp_find_ahbslvs_next (root, vendor, device, dev, index, 1); |
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624 | } |
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625 | |
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626 | int |
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627 | ambapp_find_ahbslv (struct ambapp_dev_hdr *root, int vendor, int device, |
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628 | struct ambapp_ahb_info *dev) |
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629 | { |
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630 | return ambapp_find_ahbslvs_next (root, vendor, device, dev, 0, 1); |
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631 | } |
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632 | |
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633 | int |
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634 | ambapp_find_ahbslvs (struct ambapp_dev_hdr *root, int vendor, int device, |
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635 | struct ambapp_ahb_info *dev, int maxno) |
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636 | { |
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637 | return ambapp_find_ahbslvs_next (root, vendor, device, dev, 0, maxno); |
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638 | } |
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639 | |
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640 | struct ambapp_dev_hdr * |
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641 | ambapp_find_parent (struct ambapp_dev_hdr *dev) |
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642 | { |
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643 | while (dev->prev) |
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644 | { |
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645 | if (dev == dev->prev->children) |
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646 | { |
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647 | return dev->prev; |
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648 | } |
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649 | dev = dev->prev; |
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650 | } |
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651 | return NULL; |
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652 | } |
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653 | |
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654 | |
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655 | struct ambapp_dev_hdr *ambapp_root = NULL; |
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656 | extern unsigned int console; |
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657 | extern unsigned int rtc; |
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658 | |
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659 | void |
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660 | pnpinit (void) |
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661 | { |
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662 | struct ambapp_apb_info dev; |
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663 | int n; |
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664 | ambapp_scan (LEON3_IO_AREA, NULL, NULL, NULL, &ambapp_root, NULL); |
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665 | if ((n = |
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666 | ambapp_find_apbslv (ambapp_root, VENDOR_GAISLER, GAISLER_APBUART, |
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667 | &dev)) == 1) |
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668 | { |
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669 | console = dev.start; |
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670 | DPRINTF (("Found abuart at 0x%x\n", console)); |
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671 | } |
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672 | if ((n = |
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673 | ambapp_find_apbslv (ambapp_root, VENDOR_GAISLER, GAISLER_GPTIMER, |
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674 | &dev)) == 1) |
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675 | { |
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676 | rtc = dev.start + 0x10; |
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677 | DPRINTF (("Found rtc at 0x%x\n", rtc)); |
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678 | } |
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679 | } |
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