1 /* 2 * Copyright 2005-2006 Erik Waling 3 * Copyright 2006 Stephane Marchesin 4 * Copyright 2007-2009 Stuart Bennett 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 20 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF 21 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 #include <subdev/bios.h> 25 #include <subdev/bios/bit.h> 26 #include <subdev/bios/bmp.h> 27 #include <subdev/bios/pll.h> 28 #include <subdev/vga.h> 29 30 31 struct pll_mapping { 32 u8 type; 33 u32 reg; 34 }; 35 36 static struct pll_mapping 37 nv04_pll_mapping[] = { 38 { PLL_CORE , 0x680500 }, 39 { PLL_MEMORY, 0x680504 }, 40 { PLL_VPLL0 , 0x680508 }, 41 { PLL_VPLL1 , 0x680520 }, 42 {} 43 }; 44 45 static struct pll_mapping 46 nv40_pll_mapping[] = { 47 { PLL_CORE , 0x004000 }, 48 { PLL_MEMORY, 0x004020 }, 49 { PLL_VPLL0 , 0x680508 }, 50 { PLL_VPLL1 , 0x680520 }, 51 {} 52 }; 53 54 static struct pll_mapping 55 nv50_pll_mapping[] = { 56 { PLL_CORE , 0x004028 }, 57 { PLL_SHADER, 0x004020 }, 58 { PLL_UNK03 , 0x004000 }, 59 { PLL_MEMORY, 0x004008 }, 60 { PLL_UNK40 , 0x00e810 }, 61 { PLL_UNK41 , 0x00e818 }, 62 { PLL_UNK42 , 0x00e824 }, 63 { PLL_VPLL0 , 0x614100 }, 64 { PLL_VPLL1 , 0x614900 }, 65 {} 66 }; 67 68 static struct pll_mapping 69 g84_pll_mapping[] = { 70 { PLL_CORE , 0x004028 }, 71 { PLL_SHADER, 0x004020 }, 72 { PLL_MEMORY, 0x004008 }, 73 { PLL_VDEC , 0x004030 }, 74 { PLL_UNK41 , 0x00e818 }, 75 { PLL_VPLL0 , 0x614100 }, 76 { PLL_VPLL1 , 0x614900 }, 77 {} 78 }; 79 80 static u32 81 pll_limits_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) 82 { 83 struct bit_entry bit_C; 84 u32 data = 0x0000; 85 86 if (!bit_entry(bios, 'C', &bit_C)) { 87 if (bit_C.version == 1 && bit_C.length >= 10) 88 data = nvbios_rd16(bios, bit_C.offset + 8); 89 if (bit_C.version == 2 && bit_C.length >= 4) 90 data = nvbios_rd32(bios, bit_C.offset + 0); 91 if (data) { 92 *ver = nvbios_rd08(bios, data + 0); 93 *hdr = nvbios_rd08(bios, data + 1); 94 *len = nvbios_rd08(bios, data + 2); 95 *cnt = nvbios_rd08(bios, data + 3); 96 return data; 97 } 98 } 99 100 if (bmp_version(bios) >= 0x0524) { 101 data = nvbios_rd16(bios, bios->bmp_offset + 142); 102 if (data) { 103 *ver = nvbios_rd08(bios, data + 0); 104 *hdr = 1; 105 *cnt = 1; 106 *len = 0x18; 107 return data; 108 } 109 } 110 111 *ver = 0x00; 112 return data; 113 } 114 115 static struct pll_mapping * 116 pll_map(struct nvkm_bios *bios) 117 { 118 struct nvkm_device *device = bios->subdev.device; 119 switch (device->card_type) { 120 case NV_04: 121 case NV_10: 122 case NV_11: 123 case NV_20: 124 case NV_30: 125 return nv04_pll_mapping; 126 break; 127 case NV_40: 128 return nv40_pll_mapping; 129 case NV_50: 130 if (device->chipset == 0x50) 131 return nv50_pll_mapping; 132 else 133 if (device->chipset < 0xa3 || 134 device->chipset == 0xaa || 135 device->chipset == 0xac) 136 return g84_pll_mapping; 137 fallthrough; 138 default: 139 return NULL; 140 } 141 } 142 143 static u32 144 pll_map_reg(struct nvkm_bios *bios, u32 reg, u32 *type, u8 *ver, u8 *len) 145 { 146 struct pll_mapping *map; 147 u8 hdr, cnt; 148 u32 data; 149 150 data = pll_limits_table(bios, ver, &hdr, &cnt, len); 151 if (data && *ver >= 0x30) { 152 data += hdr; 153 while (cnt--) { 154 if (nvbios_rd32(bios, data + 3) == reg) { 155 *type = nvbios_rd08(bios, data + 0); 156 return data; 157 } 158 data += *len; 159 } 160 return 0x0000; 161 } 162 163 map = pll_map(bios); 164 while (map && map->reg) { 165 if (map->reg == reg && *ver >= 0x20) { 166 u32 addr = (data += hdr); 167 *type = map->type; 168 while (cnt--) { 169 if (nvbios_rd32(bios, data) == map->reg) 170 return data; 171 data += *len; 172 } 173 return addr; 174 } else 175 if (map->reg == reg) { 176 *type = map->type; 177 return data + 1; 178 } 179 map++; 180 } 181 182 return 0x0000; 183 } 184 185 static u32 186 pll_map_type(struct nvkm_bios *bios, u8 type, u32 *reg, u8 *ver, u8 *len) 187 { 188 struct pll_mapping *map; 189 u8 hdr, cnt; 190 u32 data; 191 192 data = pll_limits_table(bios, ver, &hdr, &cnt, len); 193 if (data && *ver >= 0x30) { 194 data += hdr; 195 while (cnt--) { 196 if (nvbios_rd08(bios, data + 0) == type) { 197 if (*ver < 0x50) 198 *reg = nvbios_rd32(bios, data + 3); 199 else 200 *reg = 0; 201 return data; 202 } 203 data += *len; 204 } 205 return 0x0000; 206 } 207 208 map = pll_map(bios); 209 while (map && map->reg) { 210 if (map->type == type && *ver >= 0x20) { 211 u32 addr = (data += hdr); 212 *reg = map->reg; 213 while (cnt--) { 214 if (nvbios_rd32(bios, data) == map->reg) 215 return data; 216 data += *len; 217 } 218 return addr; 219 } else 220 if (map->type == type) { 221 *reg = map->reg; 222 return data + 1; 223 } 224 map++; 225 } 226 227 return 0x0000; 228 } 229 230 int 231 nvbios_pll_parse(struct nvkm_bios *bios, u32 type, struct nvbios_pll *info) 232 { 233 struct nvkm_subdev *subdev = &bios->subdev; 234 struct nvkm_device *device = subdev->device; 235 u8 ver, len; 236 u32 reg = type; 237 u32 data; 238 239 if (type > PLL_MAX) { 240 reg = type; 241 data = pll_map_reg(bios, reg, &type, &ver, &len); 242 } else { 243 data = pll_map_type(bios, type, ®, &ver, &len); 244 } 245 246 if (ver && !data) 247 return -ENOENT; 248 249 memset(info, 0, sizeof(*info)); 250 info->type = type; 251 info->reg = reg; 252 253 switch (ver) { 254 case 0x00: 255 break; 256 case 0x10: 257 case 0x11: 258 info->vco1.min_freq = nvbios_rd32(bios, data + 0); 259 info->vco1.max_freq = nvbios_rd32(bios, data + 4); 260 info->vco2.min_freq = nvbios_rd32(bios, data + 8); 261 info->vco2.max_freq = nvbios_rd32(bios, data + 12); 262 info->vco1.min_inputfreq = nvbios_rd32(bios, data + 16); 263 info->vco2.min_inputfreq = nvbios_rd32(bios, data + 20); 264 info->vco1.max_inputfreq = INT_MAX; 265 info->vco2.max_inputfreq = INT_MAX; 266 267 info->max_p = 0x7; 268 info->max_p_usable = 0x6; 269 270 /* these values taken from nv30/31/36 */ 271 switch (bios->version.chip) { 272 case 0x36: 273 info->vco1.min_n = 0x5; 274 break; 275 default: 276 info->vco1.min_n = 0x1; 277 break; 278 } 279 info->vco1.max_n = 0xff; 280 info->vco1.min_m = 0x1; 281 info->vco1.max_m = 0xd; 282 283 /* 284 * On nv30, 31, 36 (i.e. all cards with two stage PLLs with this 285 * table version (apart from nv35)), N2 is compared to 286 * maxN2 (0x46) and 10 * maxM2 (0x4), so set maxN2 to 0x28 and 287 * save a comparison 288 */ 289 info->vco2.min_n = 0x4; 290 switch (bios->version.chip) { 291 case 0x30: 292 case 0x35: 293 info->vco2.max_n = 0x1f; 294 break; 295 default: 296 info->vco2.max_n = 0x28; 297 break; 298 } 299 info->vco2.min_m = 0x1; 300 info->vco2.max_m = 0x4; 301 break; 302 case 0x20: 303 case 0x21: 304 info->vco1.min_freq = nvbios_rd16(bios, data + 4) * 1000; 305 info->vco1.max_freq = nvbios_rd16(bios, data + 6) * 1000; 306 info->vco2.min_freq = nvbios_rd16(bios, data + 8) * 1000; 307 info->vco2.max_freq = nvbios_rd16(bios, data + 10) * 1000; 308 info->vco1.min_inputfreq = nvbios_rd16(bios, data + 12) * 1000; 309 info->vco2.min_inputfreq = nvbios_rd16(bios, data + 14) * 1000; 310 info->vco1.max_inputfreq = nvbios_rd16(bios, data + 16) * 1000; 311 info->vco2.max_inputfreq = nvbios_rd16(bios, data + 18) * 1000; 312 info->vco1.min_n = nvbios_rd08(bios, data + 20); 313 info->vco1.max_n = nvbios_rd08(bios, data + 21); 314 info->vco1.min_m = nvbios_rd08(bios, data + 22); 315 info->vco1.max_m = nvbios_rd08(bios, data + 23); 316 info->vco2.min_n = nvbios_rd08(bios, data + 24); 317 info->vco2.max_n = nvbios_rd08(bios, data + 25); 318 info->vco2.min_m = nvbios_rd08(bios, data + 26); 319 info->vco2.max_m = nvbios_rd08(bios, data + 27); 320 321 info->max_p = nvbios_rd08(bios, data + 29); 322 info->max_p_usable = info->max_p; 323 if (bios->version.chip < 0x60) 324 info->max_p_usable = 0x6; 325 info->bias_p = nvbios_rd08(bios, data + 30); 326 327 if (len > 0x22) 328 info->refclk = nvbios_rd32(bios, data + 31); 329 break; 330 case 0x30: 331 data = nvbios_rd16(bios, data + 1); 332 333 info->vco1.min_freq = nvbios_rd16(bios, data + 0) * 1000; 334 info->vco1.max_freq = nvbios_rd16(bios, data + 2) * 1000; 335 info->vco2.min_freq = nvbios_rd16(bios, data + 4) * 1000; 336 info->vco2.max_freq = nvbios_rd16(bios, data + 6) * 1000; 337 info->vco1.min_inputfreq = nvbios_rd16(bios, data + 8) * 1000; 338 info->vco2.min_inputfreq = nvbios_rd16(bios, data + 10) * 1000; 339 info->vco1.max_inputfreq = nvbios_rd16(bios, data + 12) * 1000; 340 info->vco2.max_inputfreq = nvbios_rd16(bios, data + 14) * 1000; 341 info->vco1.min_n = nvbios_rd08(bios, data + 16); 342 info->vco1.max_n = nvbios_rd08(bios, data + 17); 343 info->vco1.min_m = nvbios_rd08(bios, data + 18); 344 info->vco1.max_m = nvbios_rd08(bios, data + 19); 345 info->vco2.min_n = nvbios_rd08(bios, data + 20); 346 info->vco2.max_n = nvbios_rd08(bios, data + 21); 347 info->vco2.min_m = nvbios_rd08(bios, data + 22); 348 info->vco2.max_m = nvbios_rd08(bios, data + 23); 349 info->max_p_usable = info->max_p = nvbios_rd08(bios, data + 25); 350 info->bias_p = nvbios_rd08(bios, data + 27); 351 info->refclk = nvbios_rd32(bios, data + 28); 352 break; 353 case 0x40: 354 info->refclk = nvbios_rd16(bios, data + 9) * 1000; 355 data = nvbios_rd16(bios, data + 1); 356 357 info->vco1.min_freq = nvbios_rd16(bios, data + 0) * 1000; 358 info->vco1.max_freq = nvbios_rd16(bios, data + 2) * 1000; 359 info->vco1.min_inputfreq = nvbios_rd16(bios, data + 4) * 1000; 360 info->vco1.max_inputfreq = nvbios_rd16(bios, data + 6) * 1000; 361 info->vco1.min_m = nvbios_rd08(bios, data + 8); 362 info->vco1.max_m = nvbios_rd08(bios, data + 9); 363 info->vco1.min_n = nvbios_rd08(bios, data + 10); 364 info->vco1.max_n = nvbios_rd08(bios, data + 11); 365 info->min_p = nvbios_rd08(bios, data + 12); 366 info->max_p = nvbios_rd08(bios, data + 13); 367 break; 368 case 0x50: 369 info->refclk = nvbios_rd16(bios, data + 1) * 1000; 370 /* info->refclk_alt = nvbios_rd16(bios, data + 3) * 1000; */ 371 info->vco1.min_freq = nvbios_rd16(bios, data + 5) * 1000; 372 info->vco1.max_freq = nvbios_rd16(bios, data + 7) * 1000; 373 info->vco1.min_inputfreq = nvbios_rd16(bios, data + 9) * 1000; 374 info->vco1.max_inputfreq = nvbios_rd16(bios, data + 11) * 1000; 375 info->vco1.min_m = nvbios_rd08(bios, data + 13); 376 info->vco1.max_m = nvbios_rd08(bios, data + 14); 377 info->vco1.min_n = nvbios_rd08(bios, data + 15); 378 info->vco1.max_n = nvbios_rd08(bios, data + 16); 379 info->min_p = nvbios_rd08(bios, data + 17); 380 info->max_p = nvbios_rd08(bios, data + 18); 381 break; 382 default: 383 nvkm_error(subdev, "unknown pll limits version 0x%02x\n", ver); 384 return -EINVAL; 385 } 386 387 if (!info->refclk) { 388 info->refclk = device->crystal; 389 if (bios->version.chip == 0x51) { 390 u32 sel_clk = nvkm_rd32(device, 0x680524); 391 if ((info->reg == 0x680508 && sel_clk & 0x20) || 392 (info->reg == 0x680520 && sel_clk & 0x80)) { 393 if (nvkm_rdvgac(device, 0, 0x27) < 0xa3) 394 info->refclk = 200000; 395 else 396 info->refclk = 25000; 397 } 398 } 399 } 400 401 /* 402 * By now any valid limit table ought to have set a max frequency for 403 * vco1, so if it's zero it's either a pre limit table bios, or one 404 * with an empty limit table (seen on nv18) 405 */ 406 if (!info->vco1.max_freq) { 407 info->vco1.max_freq = nvbios_rd32(bios, bios->bmp_offset + 67); 408 info->vco1.min_freq = nvbios_rd32(bios, bios->bmp_offset + 71); 409 if (bmp_version(bios) < 0x0506) { 410 info->vco1.max_freq = 256000; 411 info->vco1.min_freq = 128000; 412 } 413 414 info->vco1.min_inputfreq = 0; 415 info->vco1.max_inputfreq = INT_MAX; 416 info->vco1.min_n = 0x1; 417 info->vco1.max_n = 0xff; 418 info->vco1.min_m = 0x1; 419 420 if (device->crystal == 13500) { 421 /* nv05 does this, nv11 doesn't, nv10 unknown */ 422 if (bios->version.chip < 0x11) 423 info->vco1.min_m = 0x7; 424 info->vco1.max_m = 0xd; 425 } else { 426 if (bios->version.chip < 0x11) 427 info->vco1.min_m = 0x8; 428 info->vco1.max_m = 0xe; 429 } 430 431 if (bios->version.chip < 0x17 || 432 bios->version.chip == 0x1a || 433 bios->version.chip == 0x20) 434 info->max_p = 4; 435 else 436 info->max_p = 5; 437 info->max_p_usable = info->max_p; 438 } 439 440 return 0; 441 } 442