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Rev | Author | Line No. | Line |
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1117 | serge | 1 | |
1403 | serge | 2 | #include |
1630 | serge | 3 | #include |
1963 | serge | 4 | #include |
5271 | serge | 5 | #include |
6 | #include |
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1117 | serge | 7 | |
8 | |||
5271 | serge | 9 | |
5078 | serge | 10 | |
1120 | serge | 11 | |
1117 | serge | 12 | |
13 | #define IORESOURCE_PCI_FIXED (1<<4) /* Do not move resource */ |
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14 | |||
15 | |||
16 | |||
17 | |||
18 | * Translate the low bits of the PCI base |
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19 | * to the resource type |
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20 | */ |
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21 | static inline unsigned int pci_calc_resource_flags(unsigned int flags) |
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22 | { |
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23 | if (flags & PCI_BASE_ADDRESS_SPACE_IO) |
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24 | return IORESOURCE_IO; |
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25 | |||
26 | |||
27 | return IORESOURCE_MEM | IORESOURCE_PREFETCH; |
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28 | |||
29 | |||
30 | } |
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31 | |||
32 | |||
33 | |||
5271 | serge | 34 | { |
1117 | serge | 35 | u32 size = mask & maxbase; /* Find the significant bits */ |
5271 | serge | 36 | |
1117 | serge | 37 | |
38 | return 0; |
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39 | |||
40 | |||
41 | from that the extent. */ |
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42 | size = (size & ~(size-1)) - 1; |
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43 | |||
44 | |||
45 | already been programmed with all 1s. */ |
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46 | if (base == maxbase && ((base | size) & mask) != mask) |
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47 | return 0; |
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48 | |||
49 | |||
50 | } |
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51 | |||
52 | |||
5271 | serge | 53 | { |
1117 | serge | 54 | u64 size = mask & maxbase; /* Find the significant bits */ |
5271 | serge | 55 | |
1117 | serge | 56 | |
57 | return 0; |
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58 | |||
59 | |||
60 | from that the extent. */ |
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61 | size = (size & ~(size-1)) - 1; |
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62 | |||
63 | |||
64 | already been programmed with all 1s. */ |
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65 | if (base == maxbase && ((base | size) & mask) != mask) |
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66 | return 0; |
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67 | |||
68 | |||
69 | } |
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70 | |||
71 | |||
5271 | serge | 72 | { |
1117 | serge | 73 | if ((mask & (PCI_BASE_ADDRESS_SPACE|PCI_BASE_ADDRESS_MEM_TYPE_MASK)) == |
74 | (PCI_BASE_ADDRESS_SPACE_MEMORY|PCI_BASE_ADDRESS_MEM_TYPE_64)) |
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75 | return 1; |
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76 | return 0; |
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77 | } |
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78 | |||
79 | |||
80 | { |
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81 | u32 pos, reg, next; |
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5271 | serge | 82 | u32 l, sz; |
83 | struct resource *res; |
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1117 | serge | 84 | |
85 | |||
86 | { |
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87 | u64 l64; |
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5271 | serge | 88 | u64 sz64; |
89 | u32 raw_sz; |
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90 | |||
1117 | serge | 91 | |
92 | |||
93 | |||
94 | |||
95 | |||
96 | l = PciRead32(dev->busnr, dev->devfn, reg); |
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2160 | serge | 97 | PciWrite32(dev->busnr, dev->devfn, reg, ~0); |
98 | sz = PciRead32(dev->busnr, dev->devfn, reg); |
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99 | PciWrite32(dev->busnr, dev->devfn, reg, l); |
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100 | |||
1117 | serge | 101 | |
102 | continue; |
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103 | |||
104 | |||
105 | l = 0; |
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106 | |||
107 | |||
108 | if ((l & PCI_BASE_ADDRESS_SPACE) == |
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109 | PCI_BASE_ADDRESS_SPACE_MEMORY) |
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110 | { |
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111 | sz = pci_size(l, sz, (u32)PCI_BASE_ADDRESS_MEM_MASK); |
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5271 | serge | 112 | /* |
1117 | serge | 113 | * For 64bit prefetchable memory sz could be 0, if the |
114 | * real size is bigger than 4G, so we need to check |
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115 | * szhi for that. |
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116 | */ |
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117 | if (!is_64bit_memory(l) && !sz) |
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118 | continue; |
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119 | res->start = l & PCI_BASE_ADDRESS_MEM_MASK; |
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120 | res->flags |= l & ~PCI_BASE_ADDRESS_MEM_MASK; |
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121 | } |
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122 | else { |
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123 | sz = pci_size(l, sz, PCI_BASE_ADDRESS_IO_MASK & 0xffff); |
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124 | if (!sz) |
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125 | continue; |
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126 | res->start = l & PCI_BASE_ADDRESS_IO_MASK; |
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127 | res->flags |= l & ~PCI_BASE_ADDRESS_IO_MASK; |
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128 | } |
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129 | res->end = res->start + (unsigned long) sz; |
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130 | res->flags |= pci_calc_resource_flags(l); |
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131 | if (is_64bit_memory(l)) |
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132 | { |
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133 | u32 szhi, lhi; |
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5271 | serge | 134 | |
1117 | serge | 135 | |
2160 | serge | 136 | PciWrite32(dev->busnr, dev->devfn, reg+4, ~0); |
137 | szhi = PciRead32(dev->busnr, dev->devfn, reg+4); |
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138 | PciWrite32(dev->busnr, dev->devfn, reg+4, lhi); |
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139 | sz64 = ((u64)szhi << 32) | raw_sz; |
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5271 | serge | 140 | l64 = ((u64)lhi << 32) | l; |
141 | sz64 = pci_size64(l64, sz64, PCI_BASE_ADDRESS_MEM_MASK); |
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1117 | serge | 142 | next++; |
143 | |||
144 | |||
145 | if (!sz64) { |
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146 | res->start = 0; |
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147 | res->end = 0; |
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148 | res->flags = 0; |
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149 | continue; |
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150 | } |
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151 | res->start = l64 & PCI_BASE_ADDRESS_MEM_MASK; |
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152 | res->end = res->start + sz64; |
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153 | #else |
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154 | if (sz64 > 0x100000000ULL) { |
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155 | printk(KERN_ERR "PCI: Unable to handle 64-bit " |
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156 | "BAR for device %s\n", pci_name(dev)); |
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157 | res->start = 0; |
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158 | res->flags = 0; |
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159 | } |
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160 | else if (lhi) |
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161 | { |
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162 | /* 64-bit wide address, treat as disabled */ |
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163 | PciWrite32(dev->busnr, dev->devfn, reg, |
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2160 | serge | 164 | l & ~(u32)PCI_BASE_ADDRESS_MEM_MASK); |
5271 | serge | 165 | PciWrite32(dev->busnr, dev->devfn, reg+4, 0); |
2160 | serge | 166 | res->start = 0; |
1117 | serge | 167 | res->end = sz; |
168 | } |
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169 | #endif |
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170 | } |
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171 | } |
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172 | |||
173 | |||
174 | { |
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175 | dev->rom_base_reg = rom; |
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176 | res = &dev->resource[PCI_ROM_RESOURCE]; |
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177 | |||
178 | |||
2160 | serge | 179 | PciWrite32(dev->busnr, dev->devfn, rom, ~PCI_ROM_ADDRESS_ENABLE); |
180 | sz = PciRead32(dev->busnr, dev->devfn, rom); |
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181 | PciWrite32(dev->busnr, dev->devfn, rom, l); |
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182 | |||
1117 | serge | 183 | |
184 | l = 0; |
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185 | |||
186 | |||
187 | { |
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188 | sz = pci_size(l, sz, (u32)PCI_ROM_ADDRESS_MASK); |
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5271 | serge | 189 | |
1117 | serge | 190 | |
191 | { |
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192 | res->flags = (l & IORESOURCE_ROM_ENABLE) | |
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193 | IORESOURCE_MEM | IORESOURCE_PREFETCH | |
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194 | IORESOURCE_READONLY | IORESOURCE_CACHEABLE; |
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195 | res->start = l & PCI_ROM_ADDRESS_MASK; |
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196 | res->end = res->start + (unsigned long) sz; |
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197 | } |
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198 | } |
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199 | } |
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200 | } |
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201 | |||
202 | |||
203 | { |
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204 | u8 irq; |
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5271 | serge | 205 | |
1117 | serge | 206 | |
2160 | serge | 207 | dev->pin = irq; |
1117 | serge | 208 | if (irq) |
209 | irq = PciRead8(dev->busnr, dev->devfn, PCI_INTERRUPT_LINE); |
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2160 | serge | 210 | dev->irq = irq; |
1117 | serge | 211 | }; |
212 | |||
213 | |||
214 | |||
2160 | serge | 215 | { |
1117 | serge | 216 | u32 class; |
5271 | serge | 217 | |
1117 | serge | 218 | |
2160 | serge | 219 | dev->revision = class & 0xff; |
1117 | serge | 220 | class >>= 8; /* upper 3 bytes */ |
221 | dev->class = class; |
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222 | |||
223 | |||
224 | // dev->current_state = PCI_UNKNOWN; |
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225 | |||
226 | |||
227 | // pci_fixup_device(pci_fixup_early, dev); |
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228 | class = dev->class >> 8; |
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229 | |||
230 | |||
231 | { |
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232 | case PCI_HEADER_TYPE_NORMAL: /* standard header */ |
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233 | if (class == PCI_CLASS_BRIDGE_PCI) |
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234 | goto bad; |
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235 | pci_read_irq(dev); |
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236 | pci_read_bases(dev, 6, PCI_ROM_ADDRESS); |
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237 | dev->subsystem_vendor = PciRead16(dev->busnr, dev->devfn,PCI_SUBSYSTEM_VENDOR_ID); |
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2160 | serge | 238 | dev->subsystem_device = PciRead16(dev->busnr, dev->devfn, PCI_SUBSYSTEM_ID); |
239 | |||
1117 | serge | 240 | |
241 | * Do the ugly legacy mode stuff here rather than broken chip |
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242 | * quirk code. Legacy mode ATA controllers have fixed |
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243 | * addresses. These are not always echoed in BAR0-3, and |
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244 | * BAR0-3 in a few cases contain junk! |
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245 | */ |
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246 | if (class == PCI_CLASS_STORAGE_IDE) |
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247 | { |
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248 | u8 progif; |
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5271 | serge | 249 | |
1117 | serge | 250 | |
2160 | serge | 251 | if ((progif & 1) == 0) |
1117 | serge | 252 | { |
253 | dev->resource[0].start = 0x1F0; |
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254 | dev->resource[0].end = 0x1F7; |
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255 | dev->resource[0].flags = LEGACY_IO_RESOURCE; |
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256 | dev->resource[1].start = 0x3F6; |
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257 | dev->resource[1].end = 0x3F6; |
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258 | dev->resource[1].flags = LEGACY_IO_RESOURCE; |
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259 | } |
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260 | if ((progif & 4) == 0) |
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261 | { |
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262 | dev->resource[2].start = 0x170; |
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263 | dev->resource[2].end = 0x177; |
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264 | dev->resource[2].flags = LEGACY_IO_RESOURCE; |
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265 | dev->resource[3].start = 0x376; |
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266 | dev->resource[3].end = 0x376; |
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267 | dev->resource[3].flags = LEGACY_IO_RESOURCE; |
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268 | }; |
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269 | } |
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270 | break; |
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271 | |||
272 | |||
273 | if (class != PCI_CLASS_BRIDGE_PCI) |
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274 | goto bad; |
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275 | /* The PCI-to-PCI bridge spec requires that subtractive |
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276 | decoding (i.e. transparent) bridge must have programming |
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277 | interface code of 0x01. */ |
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278 | pci_read_irq(dev); |
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279 | dev->transparent = ((dev->class & 0xff) == 1); |
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280 | pci_read_bases(dev, 2, PCI_ROM_ADDRESS1); |
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281 | break; |
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282 | |||
283 | |||
284 | if (class != PCI_CLASS_BRIDGE_CARDBUS) |
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285 | goto bad; |
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286 | pci_read_irq(dev); |
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287 | pci_read_bases(dev, 1, 0); |
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288 | dev->subsystem_vendor = PciRead16(dev->busnr, |
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2160 | serge | 289 | dev->devfn, |
1117 | serge | 290 | PCI_CB_SUBSYSTEM_VENDOR_ID); |
291 | |||
292 | |||
2160 | serge | 293 | dev->devfn, |
1117 | serge | 294 | PCI_CB_SUBSYSTEM_ID); |
295 | break; |
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296 | |||
297 | |||
298 | printk(KERN_ERR "PCI: device %s has unknown header type %02x, ignoring.\n", |
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299 | pci_name(dev), dev->hdr_type); |
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300 | return -1; |
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301 | |||
302 | |||
303 | printk(KERN_ERR "PCI: %s: class %x doesn't match header type %02x. Ignoring class.\n", |
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304 | pci_name(dev), class, dev->hdr_type); |
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305 | dev->class = PCI_CLASS_NOT_DEFINED; |
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306 | } |
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307 | |||
308 | |||
309 | |||
310 | |||
311 | }; |
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312 | |||
313 | |||
5271 | serge | 314 | { |
1117 | serge | 315 | pci_dev_t *dev; |
1403 | serge | 316 | |
1117 | serge | 317 | |
5271 | serge | 318 | u8 hdr; |
319 | |||
1117 | serge | 320 | |
321 | |||
322 | |||
2160 | serge | 323 | |
1117 | serge | 324 | |
325 | if (id == 0xffffffff || id == 0x00000000 || |
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326 | id == 0x0000ffff || id == 0xffff0000) |
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327 | return NULL; |
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328 | |||
329 | |||
330 | { |
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331 | |||
332 | |||
333 | timeout *= 2; |
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334 | |||
335 | |||
2160 | serge | 336 | |
1117 | serge | 337 | |
338 | if (timeout > 60 * 100) |
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339 | { |
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340 | printk(KERN_WARNING "Device %04x:%02x:%02x.%d not " |
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341 | "responding\n", busnr,PCI_SLOT(devfn),PCI_FUNC(devfn)); |
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2160 | serge | 342 | return NULL; |
1117 | serge | 343 | } |
344 | }; |
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345 | |||
346 | |||
2997 | Serge | 347 | return NULL; |
348 | |||
349 | |||
2160 | serge | 350 | |
1117 | serge | 351 | |
1404 | serge | 352 | if(unlikely(dev == NULL)) |
2997 | Serge | 353 | return NULL; |
354 | |||
1117 | serge | 355 | |
1120 | serge | 356 | |
1117 | serge | 357 | |
358 | |||
2160 | serge | 359 | dev->pci_dev.devfn = devfn; |
1117 | serge | 360 | dev->pci_dev.hdr_type = hdr & 0x7f; |
361 | dev->pci_dev.multifunction = !!(hdr & 0x80); |
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362 | dev->pci_dev.vendor = id & 0xffff; |
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363 | dev->pci_dev.device = (id >> 16) & 0xffff; |
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364 | |||
365 | |||
366 | |||
367 | |||
368 | |||
369 | |||
370 | |||
371 | |||
2997 | Serge | 372 | |
373 | |||
374 | |||
5271 | serge | 375 | { |
1117 | serge | 376 | int func, nr = 0; |
377 | |||
378 | |||
379 | { |
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380 | pci_dev_t *dev; |
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1403 | serge | 381 | |
1117 | serge | 382 | |
383 | if( dev ) |
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384 | { |
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385 | list_add(&dev->link, &devices); |
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1120 | serge | 386 | |
1117 | serge | 387 | |
388 | |||
389 | |||
390 | * If this is a single function device, |
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391 | * don't scan past the first function. |
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392 | */ |
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393 | if (!dev->pci_dev.multifunction) |
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394 | { |
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395 | if (func > 0) { |
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396 | dev->pci_dev.multifunction = 1; |
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397 | } |
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398 | else { |
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399 | break; |
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400 | } |
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401 | } |
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402 | } |
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403 | else { |
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404 | if (func == 0) |
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405 | break; |
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406 | } |
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407 | }; |
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408 | |||
409 | |||
410 | }; |
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411 | |||
412 | |||
1239 | serge | 413 | |
414 | |||
415 | u8 pos, int cap, int *ttl) |
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416 | { |
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417 | u8 id; |
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418 | |||
419 | |||
420 | pos = PciRead8(bus, devfn, pos); |
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421 | if (pos < 0x40) |
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422 | break; |
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423 | pos &= ~3; |
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424 | id = PciRead8(bus, devfn, pos + PCI_CAP_LIST_ID); |
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425 | if (id == 0xff) |
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426 | break; |
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427 | if (id == cap) |
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428 | return pos; |
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429 | pos += PCI_CAP_LIST_NEXT; |
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430 | } |
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431 | return 0; |
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432 | } |
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433 | |||
434 | |||
435 | u8 pos, int cap) |
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436 | { |
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437 | int ttl = PCI_FIND_CAP_TTL; |
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438 | |||
439 | |||
440 | } |
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441 | |||
442 | |||
443 | unsigned int devfn, u8 hdr_type) |
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444 | { |
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445 | u16 status; |
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446 | |||
447 | |||
448 | if (!(status & PCI_STATUS_CAP_LIST)) |
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449 | return 0; |
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450 | |||
451 | |||
452 | case PCI_HEADER_TYPE_NORMAL: |
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453 | case PCI_HEADER_TYPE_BRIDGE: |
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454 | return PCI_CAPABILITY_LIST; |
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455 | case PCI_HEADER_TYPE_CARDBUS: |
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456 | return PCI_CB_CAPABILITY_LIST; |
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457 | default: |
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458 | return 0; |
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459 | } |
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460 | |||
461 | |||
462 | } |
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463 | |||
464 | |||
465 | |||
466 | { |
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467 | int pos; |
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468 | |||
469 | |||
2160 | serge | 470 | if (pos) |
1239 | serge | 471 | pos = __pci_find_next_cap(dev->busnr, dev->devfn, pos, cap); |
2160 | serge | 472 | |
1239 | serge | 473 | |
474 | } |
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475 | |||
476 | |||
477 | |||
2997 | Serge | 478 | |
479 | |||
480 | { |
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1963 | serge | 481 | pci_dev_t *dev; |
2997 | Serge | 482 | u32 last_bus; |
5271 | serge | 483 | u32 bus = 0 , devfn = 0; |
484 | |||
1117 | serge | 485 | |
1963 | serge | 486 | |
2997 | Serge | 487 | |
1963 | serge | 488 | |
489 | |||
2997 | Serge | 490 | return -1; |
491 | |||
1963 | serge | 492 | |
2997 | Serge | 493 | { |
494 | for (devfn = 0; devfn < 0x100; devfn += 8) |
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495 | pci_scan_slot(bus, devfn); |
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496 | |||
1963 | serge | 497 | |
498 | |||
2997 | Serge | 499 | for(dev = (pci_dev_t*)devices.next; |
500 | &dev->link != &devices; |
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501 | dev = (pci_dev_t*)dev->link.next) |
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502 | { |
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503 | dbgprintf("PCI device %x:%x bus:%x devfn:%x\n", |
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504 | dev->pci_dev.vendor, |
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505 | dev->pci_dev.device, |
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506 | dev->pci_dev.busnr, |
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507 | dev->pci_dev.devfn); |
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508 | |||
1963 | serge | 509 | |
2997 | Serge | 510 | return 0; |
511 | } |
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512 | |||
1963 | serge | 513 | |
2997 | Serge | 514 | { |
515 | pci_dev_t *dev; |
||
516 | const struct pci_device_id *ent; |
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517 | |||
1963 | serge | 518 | |
2997 | Serge | 519 | &dev->link != &devices; |
520 | dev = (pci_dev_t*)dev->link.next) |
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521 | { |
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522 | if( dev->pci_dev.vendor != idlist->vendor ) |
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523 | continue; |
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524 | |||
525 | |||
526 | { |
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527 | if(unlikely(ent->device == dev->pci_dev.device)) |
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528 | { |
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529 | pdev->pci_dev = dev->pci_dev; |
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530 | return ent; |
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531 | } |
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532 | }; |
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533 | } |
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534 | |||
535 | |||
536 | }; |
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537 | |||
538 | |||
539 | pci_get_device(unsigned int vendor, unsigned int device, struct pci_dev *from) |
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540 | { |
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541 | pci_dev_t *dev; |
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542 | |||
543 | |||
544 | |||
545 | |||
546 | { |
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547 | for(; &dev->link != &devices; |
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548 | dev = (pci_dev_t*)dev->link.next) |
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549 | { |
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550 | if( &dev->pci_dev == from) |
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551 | { |
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552 | dev = (pci_dev_t*)dev->link.next; |
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553 | break; |
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1963 | serge | 554 | }; |
2997 | Serge | 555 | } |
1963 | serge | 556 | }; |
2997 | Serge | 557 | |
1963 | serge | 558 | |
2997 | Serge | 559 | dev = (pci_dev_t*)dev->link.next) |
560 | { |
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561 | if( dev->pci_dev.vendor != vendor ) |
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562 | continue; |
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563 | |||
1963 | serge | 564 | |
2997 | Serge | 565 | { |
566 | return &dev->pci_dev; |
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567 | } |
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568 | } |
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569 | return NULL; |
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570 | }; |
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571 | |||
1963 | serge | 572 | |
573 | |||
2997 | Serge | 574 | { |
575 | pci_dev_t *dev; |
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576 | |||
1963 | serge | 577 | |
2997 | Serge | 578 | &dev->link != &devices; |
579 | dev = (pci_dev_t*)dev->link.next) |
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580 | { |
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581 | if ( dev->pci_dev.busnr == bus && dev->pci_dev.devfn == devfn) |
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582 | return &dev->pci_dev; |
||
583 | } |
||
584 | return NULL; |
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585 | } |
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1963 | serge | 586 | |
587 | |||
2997 | Serge | 588 | { |
1117 | serge | 589 | pci_dev_t *dev; |
2997 | Serge | 590 | |
1117 | serge | 591 | |
2997 | Serge | 592 | |
593 | |||
594 | { |
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1117 | serge | 595 | for(; &dev->link != &devices; |
2997 | Serge | 596 | dev = (pci_dev_t*)dev->link.next) |
597 | { |
||
598 | if( &dev->pci_dev == from) |
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599 | { |
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600 | dev = (pci_dev_t*)dev->link.next; |
||
601 | break; |
||
602 | }; |
||
603 | } |
||
604 | }; |
||
605 | |||
1117 | serge | 606 | |
2997 | Serge | 607 | dev = (pci_dev_t*)dev->link.next) |
608 | { |
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609 | if( dev->pci_dev.class == class) |
||
610 | { |
||
611 | return &dev->pci_dev; |
||
612 | } |
||
1117 | serge | 613 | } |
614 | |||
2997 | Serge | 615 | |
616 | } |
||
1117 | serge | 617 | |
618 | |||
619 | |||
2997 | Serge | 620 | #define PIO_MASK 0x0ffffUL |
621 | #define PIO_RESERVED 0x40000UL |
||
622 | |||
623 | |||
624 | unsigned long port = (unsigned long __force)addr; \ |
||
625 | if (port >= PIO_RESERVED) { \ |
||
626 | is_mmio; \ |
||
627 | } else if (port > PIO_OFFSET) { \ |
||
628 | port &= PIO_MASK; \ |
||
629 | is_pio; \ |
||
630 | }; \ |
||
631 | } while (0) |
||
632 | |||
633 | |||
634 | void __iomem *ioport_map(unsigned long port, unsigned int nr) |
||
635 | { |
||
1117 | serge | 636 | if (port > PIO_MASK) |
3764 | Serge | 637 | return NULL; |
638 | return (void __iomem *) (unsigned long) (port + PIO_OFFSET); |
||
639 | } |
||
2997 | Serge | 640 | |
1117 | serge | 641 | |
2997 | Serge | 642 | { |
643 | resource_size_t start = pci_resource_start(dev, bar); |
||
644 | resource_size_t len = pci_resource_len(dev, bar); |
||
645 | unsigned long flags = pci_resource_flags(dev, bar); |
||
646 | |||
1117 | serge | 647 | |
2997 | Serge | 648 | return NULL; |
649 | if (maxlen && len > maxlen) |
||
650 | len = maxlen; |
||
651 | if (flags & IORESOURCE_IO) |
||
652 | return ioport_map(start, len); |
||
653 | if (flags & IORESOURCE_MEM) { |
||
654 | return ioremap(start, len); |
||
655 | } |
||
656 | /* What? */ |
||
657 | return NULL; |
||
658 | } |
||
1117 | serge | 659 | |
660 | |||
2997 | Serge | 661 | { |
662 | IO_COND(addr, /* nothing */, iounmap(addr)); |
||
663 | } |
||
664 | |||
1117 | serge | 665 | |
2997 | Serge | 666 | |
667 | pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, |
||
668 | struct resource *res) |
||
669 | { |
||
1117 | serge | 670 | region->start = res->start; |
2997 | Serge | 671 | region->end = res->end; |
672 | } |
||
673 | |||
1117 | serge | 674 | |
675 | |||
2997 | Serge | 676 | { |
677 | struct resource *res = pdev->resource + PCI_ROM_RESOURCE; |
||
678 | struct pci_bus_region region; |
||
679 | u32 rom_addr; |
||
680 | |||
1117 | serge | 681 | |
2997 | Serge | 682 | return -1; |
683 | |||
684 | |||
685 | pci_read_config_dword(pdev, pdev->rom_base_reg, &rom_addr); |
||
686 | rom_addr &= ~PCI_ROM_ADDRESS_MASK; |
||
687 | rom_addr |= region.start | PCI_ROM_ADDRESS_ENABLE; |
||
688 | pci_write_config_dword(pdev, pdev->rom_base_reg, rom_addr); |
||
689 | return 0; |
||
690 | } |
||
1117 | serge | 691 | |
692 | |||
2997 | Serge | 693 | { |
694 | u32 rom_addr; |
||
695 | pci_read_config_dword(pdev, pdev->rom_base_reg, &rom_addr); |
||
696 | rom_addr &= ~PCI_ROM_ADDRESS_ENABLE; |
||
697 | pci_write_config_dword(pdev, pdev->rom_base_reg, rom_addr); |
||
698 | } |
||
699 | |||
1117 | serge | 700 | |
701 | * pci_get_rom_size - obtain the actual size of the ROM image |
||
2997 | Serge | 702 | * @pdev: target PCI device |
703 | * @rom: kernel virtual pointer to image of ROM |
||
704 | * @size: size of PCI window |
||
705 | * return: size of actual ROM image |
||
706 | * |
||
1117 | serge | 707 | * Determine the actual length of the ROM image. |
2997 | Serge | 708 | * The PCI window size could be much larger than the |
709 | * actual image size. |
||
710 | */ |
||
1117 | serge | 711 | size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size) |
2997 | Serge | 712 | { |
1117 | serge | 713 | void __iomem *image; |
2997 | Serge | 714 | int last_image; |
715 | |||
1117 | serge | 716 | |
2997 | Serge | 717 | do { |
718 | void __iomem *pds; |
||
719 | /* Standard PCI ROMs start out with these bytes 55 AA */ |
||
720 | if (readb(image) != 0x55) { |
||
721 | dev_err(&pdev->dev, "Invalid ROM contents\n"); |
||
722 | break; |
||
723 | } |
||
1117 | serge | 724 | if (readb(image + 1) != 0xAA) |
2997 | Serge | 725 | break; |
726 | /* get the PCI data structure and check its signature */ |
||
727 | pds = image + readw(image + 24); |
||
728 | if (readb(pds) != 'P') |
||
729 | break; |
||
730 | if (readb(pds + 1) != 'C') |
||
731 | break; |
||
732 | if (readb(pds + 2) != 'I') |
||
733 | break; |
||
734 | if (readb(pds + 3) != 'R') |
||
735 | break; |
||
736 | last_image = readb(pds + 21) & 0x80; |
||
737 | /* this length is reliable */ |
||
738 | image += readw(pds + 16) * 512; |
||
739 | } while (!last_image); |
||
740 | |||
1963 | serge | 741 | |
2997 | Serge | 742 | /* there are known ROMs that get the size wrong */ |
743 | return min((size_t)(image - rom), size); |
||
744 | } |
||
745 | |||
1117 | serge | 746 | |
747 | |||
748 | * pci_map_rom - map a PCI ROM to kernel space |
||
749 | * @pdev: pointer to pci device struct |
||
750 | * @size: pointer to receive size of pci window over ROM |
||
751 | * |
||
752 | * Return: kernel virtual pointer to image of ROM |
||
2997 | Serge | 753 | * |
754 | * Map a PCI ROM into kernel space. If ROM is boot video ROM, |
||
1117 | serge | 755 | * the shadow BIOS copy will be returned instead of the |
756 | * actual ROM. |
||
757 | */ |
||
758 | void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size) |
||
2997 | Serge | 759 | { |
1117 | serge | 760 | struct resource *res = &pdev->resource[PCI_ROM_RESOURCE]; |
761 | loff_t start; |
||
2997 | Serge | 762 | void __iomem *rom; |
763 | |||
1117 | serge | 764 | |
1963 | serge | 765 | * IORESOURCE_ROM_SHADOW set on x86, x86_64 and IA64 supports legacy |
766 | * memory map if the VGA enable bit of the Bridge Control register is |
||
767 | * set for embedded VGA. |
||
768 | */ |
||
769 | if (res->flags & IORESOURCE_ROM_SHADOW) { |
||
770 | /* primary video rom always starts here */ |
||
771 | start = (loff_t)0xC0000; |
||
2997 | Serge | 772 | *size = 0x20000; /* cover C000:0 through E000:0 */ |
1963 | serge | 773 | } else { |
774 | if (res->flags & |
||
3764 | Serge | 775 | (IORESOURCE_ROM_COPY | IORESOURCE_ROM_BIOS_COPY)) { |
776 | *size = pci_resource_len(pdev, PCI_ROM_RESOURCE); |
||
1963 | serge | 777 | return (void __iomem *)(unsigned long) |
2997 | Serge | 778 | pci_resource_start(pdev, PCI_ROM_RESOURCE); |
779 | } else { |
||
1963 | serge | 780 | start = (loff_t)0xC0000; |
5271 | serge | 781 | *size = 0x20000; /* cover C000:0 through E000:0 */ |
782 | |||
1963 | serge | 783 | |
784 | } |
||
785 | |||
786 | |||
787 | if (!rom) { |
||
788 | /* restore enable if ioremap fails */ |
||
789 | if (!(res->flags & (IORESOURCE_ROM_ENABLE | |
||
790 | IORESOURCE_ROM_SHADOW | |
||
791 | IORESOURCE_ROM_COPY))) |
||
792 | pci_disable_rom(pdev); |
||
793 | return NULL; |
||
794 | } |
||
795 | |||
796 | |||
797 | * Try to find the true size of the ROM since sometimes the PCI window |
||
798 | * size is much larger than the actual size of the ROM. |
||
799 | * True size is important if the ROM is going to be copied. |
||
800 | */ |
||
801 | *size = pci_get_rom_size(pdev, rom, *size); |
||
2997 | Serge | 802 | return rom; |
803 | } |
||
804 | |||
1963 | serge | 805 | |
2997 | Serge | 806 | { |
807 | struct resource *res = &pdev->resource[PCI_ROM_RESOURCE]; |
||
808 | |||
1117 | serge | 809 | |
2997 | Serge | 810 | return; |
811 | |||
1117 | serge | 812 | |
2997 | Serge | 813 | |
814 | |||
815 | if (!(res->flags & (IORESOURCE_ROM_ENABLE | IORESOURCE_ROM_SHADOW))) |
||
816 | pci_disable_rom(pdev); |
||
817 | } |
||
818 | |||
819 | |||
820 | { |
||
821 | u16 old_cmd, cmd; |
||
822 | |||
823 | |||
824 | if (enable) |
||
825 | cmd = old_cmd | PCI_COMMAND_MASTER; |
||
826 | else |
||
1117 | serge | 827 | cmd = old_cmd & ~PCI_COMMAND_MASTER; |
2997 | Serge | 828 | if (cmd != old_cmd) { |
829 | dbgprintf("%s bus mastering\n", |
||
5271 | serge | 830 | enable ? "enabling" : "disabling"); |
831 | pci_write_config_word(dev, PCI_COMMAND, cmd); |
||
2997 | Serge | 832 | } |
833 | dev->is_busmaster = enable; |
||
834 | } |
||
835 | |||
1117 | serge | 836 | |
2997 | Serge | 837 | |
838 | * @dev: the PCI device to enable |
||
839 | * |
||
840 | * Enables bus-mastering on the device and calls pcibios_set_master() |
||
841 | * to do the needed arch specific settings. |
||
842 | */ |
||
843 | void pci_set_master(struct pci_dev *dev) |
||
844 | { |
||
845 | __pci_set_master(dev, true); |
||
846 | // pcibios_set_master(dev); |
||
847 | } |
||
1117 | serge | 848 | |
849 | |||
2997 | Serge | 850 | * pci_clear_master - disables bus-mastering for device dev |
851 | * @dev: the PCI device to disable |
||
852 | */ |
||
853 | void pci_clear_master(struct pci_dev *dev) |
||
854 | { |
||
855 | __pci_set_master(dev, false); |
||
856 | } |
||
857 | |||
1119 | serge | 858 | |
2997 | Serge | 859 | |
860 | { |
||
1119 | serge | 861 | return dev->pcie_flags_reg & PCI_EXP_FLAGS_VERS; |
2997 | Serge | 862 | } |
863 | |||
1119 | serge | 864 | |
2997 | Serge | 865 | { |
866 | return true; |
||
867 | } |
||
868 | |||
1119 | serge | 869 | |
2997 | Serge | 870 | { |
871 | int type = pci_pcie_type(dev); |
||
872 | |||
873 | |||
874 | type == PCI_EXP_TYPE_ROOT_PORT || |
||
875 | type == PCI_EXP_TYPE_ENDPOINT || |
||
876 | type == PCI_EXP_TYPE_LEG_END; |
||
877 | } |
||
878 | |||
879 | |||
880 | { |
||
881 | int type = pci_pcie_type(dev); |
||
882 | |||
883 | |||
884 | type == PCI_EXP_TYPE_ROOT_PORT || |
||
885 | (type == PCI_EXP_TYPE_DOWNSTREAM && |
||
886 | dev->pcie_flags_reg & PCI_EXP_FLAGS_SLOT); |
||
887 | } |
||
888 | |||
889 | |||
890 | { |
||
891 | int type = pci_pcie_type(dev); |
||
892 | |||
893 | |||
894 | type == PCI_EXP_TYPE_ROOT_PORT || |
||
895 | type == PCI_EXP_TYPE_RC_EC; |
||
896 | } |
||
897 | |||
898 | |||
899 | { |
||
900 | if (!pci_is_pcie(dev)) |
||
901 | return false; |
||
902 | |||
903 | |||
904 | case PCI_EXP_FLAGS_TYPE: |
||
905 | return true; |
||
906 | case PCI_EXP_DEVCAP: |
||
907 | case PCI_EXP_DEVCTL: |
||
908 | case PCI_EXP_DEVSTA: |
||
909 | return pcie_cap_has_devctl(dev); |
||
910 | case PCI_EXP_LNKCAP: |
||
911 | case PCI_EXP_LNKCTL: |
||
912 | case PCI_EXP_LNKSTA: |
||
913 | return pcie_cap_has_lnkctl(dev); |
||
914 | case PCI_EXP_SLTCAP: |
||
915 | case PCI_EXP_SLTCTL: |
||
916 | case PCI_EXP_SLTSTA: |
||
917 | return pcie_cap_has_sltctl(dev); |
||
918 | case PCI_EXP_RTCTL: |
||
919 | case PCI_EXP_RTCAP: |
||
920 | case PCI_EXP_RTSTA: |
||
921 | return pcie_cap_has_rtctl(dev); |
||
922 | case PCI_EXP_DEVCAP2: |
||
923 | case PCI_EXP_DEVCTL2: |
||
924 | case PCI_EXP_LNKCAP2: |
||
925 | case PCI_EXP_LNKCTL2: |
||
926 | case PCI_EXP_LNKSTA2: |
||
927 | return pcie_cap_version(dev) > 1; |
||
928 | default: |
||
929 | return false; |
||
930 | } |
||
931 | } |
||
932 | |||
933 | |||
934 | * Note that these accessor functions are only for the "PCI Express |
||
935 | * Capability" (see PCIe spec r3.0, sec 7.8). They do not apply to the |
||
936 | * other "PCI Express Extended Capabilities" (AER, VC, ACS, MFVC, etc.) |
||
937 | */ |
||
938 | int pcie_capability_read_word(struct pci_dev *dev, int pos, u16 *val) |
||
939 | { |
||
940 | int ret; |
||
941 | |||
942 | |||
943 | if (pos & 1) |
||
944 | return -EINVAL; |
||
945 | |||
946 | |||
947 | ret = pci_read_config_word(dev, pci_pcie_cap(dev) + pos, val); |
||
948 | /* |
||
949 | * Reset *val to 0 if pci_read_config_word() fails, it may |
||
950 | * have been written as 0xFFFF if hardware error happens |
||
951 | * during pci_read_config_word(). |
||
952 | */ |
||
953 | if (ret) |
||
954 | *val = 0; |
||
955 | return ret; |
||
956 | } |
||
957 | |||
958 | |||
959 | * For Functions that do not implement the Slot Capabilities, |
||
960 | * Slot Status, and Slot Control registers, these spaces must |
||
961 | * be hardwired to 0b, with the exception of the Presence Detect |
||
962 | * State bit in the Slot Status register of Downstream Ports, |
||
963 | * which must be hardwired to 1b. (PCIe Base Spec 3.0, sec 7.8) |
||
964 | */ |
||
965 | if (pci_is_pcie(dev) && pos == PCI_EXP_SLTSTA && |
||
966 | pci_pcie_type(dev) == PCI_EXP_TYPE_DOWNSTREAM) { |
||
967 | *val = PCI_EXP_SLTSTA_PDS; |
||
968 | } |
||
969 | |||
970 | |||
971 | } |
||
972 | EXPORT_SYMBOL(pcie_capability_read_word); |
||
973 | |||
974 | |||
975 | { |
||
976 | int ret; |
||
977 | |||
978 | |||
979 | if (pos & 3) |
||
980 | return -EINVAL; |
||
981 | |||
982 | |||
983 | ret = pci_read_config_dword(dev, pci_pcie_cap(dev) + pos, val); |
||
984 | /* |
||
985 | * Reset *val to 0 if pci_read_config_dword() fails, it may |
||
986 | * have been written as 0xFFFFFFFF if hardware error happens |
||
987 | * during pci_read_config_dword(). |
||
988 | */ |
||
989 | if (ret) |
||
990 | *val = 0; |
||
991 | return ret; |
||
992 | } |
||
993 | |||
994 | |||
995 | pci_pcie_type(dev) == PCI_EXP_TYPE_DOWNSTREAM) { |
||
996 | *val = PCI_EXP_SLTSTA_PDS; |
||
997 | } |
||
998 | |||
999 | |||
1000 | } |
||
1001 | EXPORT_SYMBOL(pcie_capability_read_dword); |
||
1002 | |||
1003 | |||
1004 | { |
||
1005 | if (pos & 1) |
||
1006 | return -EINVAL; |
||
1007 | |||
1008 | |||
1009 | return 0; |
||
1119 | serge | 1010 | |
2997 | Serge | 1011 | |
1012 | } |
||
1119 | serge | 1013 | EXPORT_SYMBOL(pcie_capability_write_word); |
2997 | Serge | 1014 | |
1119 | serge | 1015 | |
2997 | Serge | 1016 | { |
1017 | if (pos & 3) |
||
1018 | return -EINVAL; |
||
1019 | |||
1963 | serge | 1020 | |
2997 | Serge | 1021 | return 0; |
1022 | |||
1023 | |||
1024 | } |
||
1025 | EXPORT_SYMBOL(pcie_capability_write_dword); |
||
1026 | |||
1027 | |||
5078 | serge | 1028 | u16 clear, u16 set) |
1029 | { |
||
1030 | int ret; |
||
1031 | u16 val; |
||
1032 | |||
1033 | |||
1034 | if (!ret) { |
||
1035 | val &= ~clear; |
||
1036 | val |= set; |
||
1037 | ret = pcie_capability_write_word(dev, pos, val); |
||
1038 | } |
||
1039 | |||
1040 | |||
1041 | } |
||
1042 | |||
1043 | |||
1044 | |||
1045 | |||
1046 | { |
||
1047 | u16 ctl; |
||
1048 | |||
1049 | |||
1050 | |||
1051 | |||
1052 | } |
||
1053 | EXPORT_SYMBOL(pcie_get_readrq); |
||
1054 | |||
1055 | |||
1056 | * pcie_set_readrq - set PCI Express maximum memory read request |
||
1057 | * @dev: PCI device to query |
||
1058 | * @rq: maximum memory read count in bytes |
||
1059 | * valid values are 128, 256, 512, 1024, 2048, 4096 |
||
1060 | * |
||
1061 | * If possible sets maximum memory read request in bytes |
||
1062 | */ |
||
1063 | int pcie_set_readrq(struct pci_dev *dev, int rq) |
||
1064 | { |
||
1065 | u16 v; |
||
1066 | |||
1067 | |||
1068 | return -EINVAL; |
||
1069 | |||
1070 | |||
1071 | |||
1072 | |||
1073 | PCI_EXP_DEVCTL_READRQ, v); |
||
1074 | }><>>><>>=>>>><>><>><>>4)><4)> |
||
1075 |