1 | /* |
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2 | * (C) Copyright 2003 Stefan Roese, stefan.roese@esd-electronics.com |
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3 | * |
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4 | * See file CREDITS for list of people who contributed to this |
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5 | * project. |
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6 | * |
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7 | * This program is free software; you can redistribute it and/or |
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8 | * modify it under the terms of the GNU General Public License as |
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9 | * published by the Free Software Foundation; either version 2 of |
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10 | * the License, or (at your option) any later version. |
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11 | * |
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12 | * This program is distributed in the hope that it will be useful, |
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | * GNU General Public License for more details. |
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16 | * |
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17 | * You should have received a copy of the GNU General Public License |
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18 | * along with this program; if not, write to the Free Software |
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19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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20 | * MA 02111-1307 USA |
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21 | */ |
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22 | |
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23 | #include <common.h> |
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24 | #include <command.h> |
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25 | #include <malloc.h> |
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26 | #include <asm/io.h> |
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27 | #include <pci.h> |
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28 | |
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29 | #include <universe.h> |
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30 | |
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31 | #define PCI_VENDOR PCI_VENDOR_ID_TUNDRA |
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32 | #define PCI_DEVICE PCI_DEVICE_ID_TUNDRA_CA91C042 |
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33 | |
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34 | |
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35 | typedef struct _UNI_DEV UNI_DEV; |
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36 | |
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37 | struct _UNI_DEV { |
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38 | int bus; |
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39 | pci_dev_t busdevfn; |
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40 | UNIVERSE *uregs; |
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41 | unsigned int pci_bs; |
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42 | }; |
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43 | |
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44 | static UNI_DEV *dev; |
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45 | |
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46 | |
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47 | int universe_init(void) |
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48 | { |
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49 | int j, result, lastError = 0; |
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50 | pci_dev_t busdevfn; |
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51 | unsigned int val; |
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52 | |
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53 | busdevfn = pci_find_device(PCI_VENDOR, PCI_DEVICE, 0); |
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54 | if (busdevfn == -1) { |
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55 | puts("No Tundra Universe found!\n"); |
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56 | return -1; |
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57 | } |
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58 | |
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59 | /* Lets turn Latency off */ |
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60 | pci_write_config_dword(busdevfn, 0x0c, 0); |
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61 | |
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62 | dev = malloc(sizeof(*dev)); |
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63 | if (NULL == dev) { |
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64 | puts("UNIVERSE: No memory!\n"); |
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65 | result = -1; |
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66 | goto break_20; |
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67 | } |
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68 | |
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69 | memset(dev, 0, sizeof(*dev)); |
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70 | dev->busdevfn = busdevfn; |
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71 | |
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72 | pci_read_config_dword(busdevfn, PCI_BASE_ADDRESS_1, &val); |
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73 | if (val & 1) { |
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74 | pci_read_config_dword(busdevfn, PCI_BASE_ADDRESS_0, &val); |
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75 | } |
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76 | val &= ~0xf; |
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77 | dev->uregs = (UNIVERSE *)val; |
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78 | |
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79 | debug ("UNIVERSE-Base : %p\n", dev->uregs); |
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80 | |
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81 | /* check mapping */ |
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82 | debug (" Read via mapping, PCI_ID = %08X\n", readl(&dev->uregs->pci_id)); |
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83 | if (((PCI_DEVICE <<16) | PCI_VENDOR) != readl(&dev->uregs->pci_id)) { |
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84 | printf ("UNIVERSE: Cannot read PCI-ID via Mapping: %08x\n", |
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85 | readl(&dev->uregs->pci_id)); |
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86 | result = -1; |
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87 | goto break_30; |
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88 | } |
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89 | |
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90 | debug ("PCI_BS = %08X\n", readl(&dev->uregs->pci_bs)); |
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91 | |
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92 | dev->pci_bs = readl(&dev->uregs->pci_bs); |
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93 | |
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94 | /* turn off windows */ |
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95 | for (j=0; j <4; j ++) { |
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96 | writel(0x00800000, &dev->uregs->lsi[j].ctl); |
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97 | writel(0x00800000, &dev->uregs->vsi[j].ctl); |
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98 | } |
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99 | |
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100 | /* |
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101 | * Write to Misc Register |
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102 | * Set VME Bus Time-out |
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103 | * Arbitration Mode |
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104 | * DTACK Enable |
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105 | */ |
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106 | writel(0x15040000 | (readl(&dev->uregs->misc_ctl) & 0x00020000), &dev->uregs->misc_ctl); |
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107 | |
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108 | if (readl(&dev->uregs->misc_ctl) & 0x00020000) { |
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109 | debug ("System Controller!\n"); /* test-only */ |
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110 | } else { |
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111 | debug ("Not System Controller!\n"); /* test-only */ |
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112 | } |
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113 | |
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114 | /* |
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115 | * Lets turn off interrupts |
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116 | */ |
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117 | writel(0x00000000,&dev->uregs->lint_en); /* Disable interrupts in the Universe first */ |
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118 | writel(0x0000FFFF,&dev->uregs->lint_stat); /* Clear Any Pending Interrupts */ |
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119 | eieio(); |
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120 | writel(0x0000, &dev->uregs->lint_map0); /* Map all ints to 0 */ |
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121 | writel(0x0000, &dev->uregs->lint_map1); /* Map all ints to 0 */ |
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122 | eieio(); |
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123 | |
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124 | return 0; |
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125 | |
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126 | break_30: |
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127 | free(dev); |
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128 | break_20: |
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129 | lastError = result; |
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130 | |
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131 | return result; |
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132 | } |
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133 | |
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134 | |
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135 | /* |
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136 | * Create pci slave window (access: pci -> vme) |
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137 | */ |
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138 | int universe_pci_slave_window(unsigned int pciAddr, unsigned int vmeAddr, int size, int vam, int pms, int vdw) |
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139 | { |
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140 | int result, i; |
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141 | unsigned int ctl = 0; |
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142 | |
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143 | if (NULL == dev) { |
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144 | result = -1; |
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145 | goto exit_10; |
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146 | } |
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147 | |
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148 | for (i = 0; i < 4; i++) { |
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149 | if (0x00800000 == readl(&dev->uregs->lsi[i].ctl)) |
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150 | break; |
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151 | } |
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152 | |
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153 | if (i == 4) { |
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154 | printf ("universe: No Image available\n"); |
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155 | result = -1; |
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156 | goto exit_10; |
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157 | } |
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158 | |
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159 | debug ("universe: Using image %d\n", i); |
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160 | |
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161 | writel(pciAddr , &dev->uregs->lsi[i].bs); |
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162 | writel((pciAddr + size), &dev->uregs->lsi[i].bd); |
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163 | writel((vmeAddr - pciAddr), &dev->uregs->lsi[i].to); |
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164 | |
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165 | switch (vam & VME_AM_Axx) { |
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166 | case VME_AM_A16: |
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167 | ctl = 0x00000000; |
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168 | break; |
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169 | case VME_AM_A24: |
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170 | ctl = 0x00010000; |
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171 | break; |
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172 | case VME_AM_A32: |
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173 | ctl = 0x00020000; |
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174 | break; |
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175 | } |
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176 | |
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177 | switch (vam & VME_AM_Mxx) { |
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178 | case VME_AM_DATA: |
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179 | ctl |= 0x00000000; |
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180 | break; |
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181 | case VME_AM_PROG: |
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182 | ctl |= 0x00008000; |
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183 | break; |
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184 | } |
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185 | |
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186 | if (vam & VME_AM_SUP) { |
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187 | ctl |= 0x00001000; |
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188 | |
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189 | } |
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190 | |
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191 | switch (vdw & VME_FLAG_Dxx) { |
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192 | case VME_FLAG_D8: |
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193 | ctl |= 0x00000000; |
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194 | break; |
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195 | case VME_FLAG_D16: |
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196 | ctl |= 0x00400000; |
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197 | break; |
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198 | case VME_FLAG_D32: |
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199 | ctl |= 0x00800000; |
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200 | break; |
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201 | } |
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202 | |
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203 | switch (pms & PCI_MS_Mxx) { |
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204 | case PCI_MS_MEM: |
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205 | ctl |= 0x00000000; |
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206 | break; |
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207 | case PCI_MS_IO: |
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208 | ctl |= 0x00000001; |
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209 | break; |
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210 | case PCI_MS_CONFIG: |
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211 | ctl |= 0x00000002; |
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212 | break; |
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213 | } |
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214 | |
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215 | ctl |= 0x80000000; /* enable */ |
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216 | |
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217 | writel(ctl, &dev->uregs->lsi[i].ctl); |
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218 | |
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219 | debug ("universe: window-addr=%p\n", &dev->uregs->lsi[i].ctl); |
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220 | debug ("universe: pci slave window[%d] ctl=%08x\n", i, readl(&dev->uregs->lsi[i].ctl)); |
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221 | debug ("universe: pci slave window[%d] bs=%08x\n", i, readl(&dev->uregs->lsi[i].bs)); |
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222 | debug ("universe: pci slave window[%d] bd=%08x\n", i, readl(&dev->uregs->lsi[i].bd)); |
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223 | debug ("universe: pci slave window[%d] to=%08x\n", i, readl(&dev->uregs->lsi[i].to)); |
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224 | |
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225 | return 0; |
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226 | |
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227 | exit_10: |
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228 | return -result; |
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229 | } |
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230 | |
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231 | |
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232 | /* |
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233 | * Create vme slave window (access: vme -> pci) |
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234 | */ |
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235 | int universe_vme_slave_window(unsigned int vmeAddr, unsigned int pciAddr, int size, int vam, int pms) |
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236 | { |
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237 | int result, i; |
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238 | unsigned int ctl = 0; |
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239 | |
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240 | if (NULL == dev) { |
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241 | result = -1; |
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242 | goto exit_10; |
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243 | } |
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244 | |
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245 | for (i = 0; i < 4; i++) { |
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246 | if (0x00800000 == readl(&dev->uregs->vsi[i].ctl)) |
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247 | break; |
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248 | } |
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249 | |
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250 | if (i == 4) { |
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251 | printf ("universe: No Image available\n"); |
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252 | result = -1; |
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253 | goto exit_10; |
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254 | } |
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255 | |
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256 | debug ("universe: Using image %d\n", i); |
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257 | |
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258 | writel(vmeAddr , &dev->uregs->vsi[i].bs); |
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259 | writel((vmeAddr + size), &dev->uregs->vsi[i].bd); |
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260 | writel((pciAddr - vmeAddr), &dev->uregs->vsi[i].to); |
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261 | |
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262 | switch (vam & VME_AM_Axx) { |
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263 | case VME_AM_A16: |
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264 | ctl = 0x00000000; |
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265 | break; |
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266 | case VME_AM_A24: |
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267 | ctl = 0x00010000; |
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268 | break; |
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269 | case VME_AM_A32: |
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270 | ctl = 0x00020000; |
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271 | break; |
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272 | } |
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273 | |
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274 | switch (vam & VME_AM_Mxx) { |
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275 | case VME_AM_DATA: |
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276 | ctl |= 0x00000000; |
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277 | break; |
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278 | case VME_AM_PROG: |
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279 | ctl |= 0x00800000; |
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280 | break; |
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281 | } |
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282 | |
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283 | if (vam & VME_AM_SUP) { |
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284 | ctl |= 0x00100000; |
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285 | |
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286 | } |
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287 | |
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288 | switch (pms & PCI_MS_Mxx) { |
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289 | case PCI_MS_MEM: |
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290 | ctl |= 0x00000000; |
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291 | break; |
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292 | case PCI_MS_IO: |
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293 | ctl |= 0x00000001; |
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294 | break; |
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295 | case PCI_MS_CONFIG: |
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296 | ctl |= 0x00000002; |
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297 | break; |
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298 | } |
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299 | |
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300 | ctl |= 0x80f00000; /* enable */ |
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301 | |
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302 | writel(ctl, &dev->uregs->vsi[i].ctl); |
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303 | |
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304 | debug ("universe: window-addr=%p\n", &dev->uregs->vsi[i].ctl); |
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305 | debug ("universe: vme slave window[%d] ctl=%08x\n", i, readl(&dev->uregs->vsi[i].ctl)); |
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306 | debug ("universe: vme slave window[%d] bs=%08x\n", i, readl(&dev->uregs->vsi[i].bs)); |
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307 | debug ("universe: vme slave window[%d] bd=%08x\n", i, readl(&dev->uregs->vsi[i].bd)); |
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308 | debug ("universe: vme slave window[%d] to=%08x\n", i, readl(&dev->uregs->vsi[i].to)); |
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309 | |
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310 | return 0; |
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311 | |
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312 | exit_10: |
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313 | return -result; |
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314 | } |
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315 | |
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316 | |
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317 | /* |
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318 | * Tundra Universe configuration |
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319 | */ |
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320 | int do_universe(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) |
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321 | { |
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322 | ulong addr1 = 0, addr2 = 0, size = 0, vam = 0, pms = 0, vdw = 0; |
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323 | char cmd = 'x'; |
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324 | |
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325 | /* get parameter */ |
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326 | if (argc > 1) |
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327 | cmd = argv[1][0]; |
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328 | if (argc > 2) |
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329 | addr1 = simple_strtoul(argv[2], NULL, 16); |
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330 | if (argc > 3) |
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331 | addr2 = simple_strtoul(argv[3], NULL, 16); |
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332 | if (argc > 4) |
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333 | size = simple_strtoul(argv[4], NULL, 16); |
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334 | if (argc > 5) |
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335 | vam = simple_strtoul(argv[5], NULL, 16); |
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336 | if (argc > 6) |
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337 | pms = simple_strtoul(argv[6], NULL, 16); |
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338 | if (argc > 7) |
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339 | vdw = simple_strtoul(argv[7], NULL, 16); |
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340 | |
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341 | switch (cmd) { |
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342 | case 'i': /* init */ |
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343 | universe_init(); |
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344 | break; |
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345 | case 'v': /* vme */ |
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346 | printf("Configuring Universe VME Slave Window (VME->PCI):\n"); |
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347 | printf(" vme=%08lx pci=%08lx size=%08lx vam=%02lx pms=%02lx\n", |
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348 | addr1, addr2, size, vam, pms); |
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349 | universe_vme_slave_window(addr1, addr2, size, vam, pms); |
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350 | break; |
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351 | case 'p': /* pci */ |
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352 | printf("Configuring Universe PCI Slave Window (PCI->VME):\n"); |
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353 | printf(" pci=%08lx vme=%08lx size=%08lx vam=%02lx pms=%02lx vdw=%02lx\n", |
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354 | addr1, addr2, size, vam, pms, vdw); |
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355 | universe_pci_slave_window(addr1, addr2, size, vam, pms, vdw); |
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356 | break; |
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357 | default: |
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358 | printf("Universe command %s not supported!\n", argv[1]); |
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359 | } |
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360 | |
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361 | return 0; |
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362 | } |
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363 | |
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364 | |
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365 | U_BOOT_CMD( |
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366 | universe, 8, 1, do_universe, |
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367 | "universe- initialize and configure Turndra Universe\n", |
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368 | "init\n" |
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369 | " - initialize universe\n" |
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370 | "universe vme [vme_addr] [pci_addr] [size] [vam] [pms]\n" |
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371 | " - create vme slave window (access: vme->pci)\n" |
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372 | "universe pci [pci_addr] [vme_addr] [size] [vam] [pms] [vdw]\n" |
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373 | " - create pci slave window (access: pci->vme)\n" |
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374 | " [vam] = VMEbus Address-Modifier: 01 -> A16 Address Space\n" |
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375 | " 02 -> A24 Address Space\n" |
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376 | " 03 -> A32 Address Space\n" |
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377 | " 04 -> Supervisor AM Code\n" |
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378 | " 10 -> Data AM Code\n" |
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379 | " 20 -> Program AM Code\n" |
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380 | " [pms] = PCI Memory Space: 01 -> Memory Space\n" |
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381 | " 02 -> I/O Space\n" |
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382 | " 03 -> Configuration Space\n" |
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383 | " [vdw] = VMEbus Maximum Datawidth: 01 -> D8 Data Width\n" |
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384 | " 02 -> D16 Data Width\n" |
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385 | " 03 -> D32 Data Width\n" |
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386 | ); |
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