1 /*- 2 * Copyright (c) 2004 Colin Percival 3 * Copyright (c) 2005 Nate Lawson 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted providing that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/bus.h> 33 #include <sys/cpu.h> 34 #include <sys/kernel.h> 35 #include <sys/malloc.h> 36 #include <sys/module.h> 37 #include <sys/smp.h> 38 #include <sys/systm.h> 39 40 #include "cpufreq_if.h" 41 #include <machine/clock.h> 42 #include <machine/cputypes.h> 43 #include <machine/md_var.h> 44 #include <machine/specialreg.h> 45 46 #include <contrib/dev/acpica/include/acpi.h> 47 48 #include <dev/acpica/acpivar.h> 49 #include "acpi_if.h" 50 51 /* Status/control registers (from the IA-32 System Programming Guide). */ 52 #define MSR_PERF_STATUS 0x198 53 #define MSR_PERF_CTL 0x199 54 55 /* Register and bit for enabling SpeedStep. */ 56 #define MSR_MISC_ENABLE 0x1a0 57 #define MSR_SS_ENABLE (1<<16) 58 59 /* Frequency and MSR control values. */ 60 typedef struct { 61 uint16_t freq; 62 uint16_t volts; 63 uint16_t id16; 64 int power; 65 } freq_info; 66 67 /* Identifying characteristics of a processor and supported frequencies. */ 68 typedef struct { 69 const u_int vendor_id; 70 uint32_t id32; 71 freq_info *freqtab; 72 } cpu_info; 73 74 struct est_softc { 75 device_t dev; 76 int acpi_settings; 77 int msr_settings; 78 freq_info *freq_list; 79 }; 80 81 /* Convert MHz and mV into IDs for passing to the MSR. */ 82 #define ID16(MHz, mV, bus_clk) \ 83 (((MHz / bus_clk) << 8) | ((mV ? mV - 700 : 0) >> 4)) 84 #define ID32(MHz_hi, mV_hi, MHz_lo, mV_lo, bus_clk) \ 85 ((ID16(MHz_lo, mV_lo, bus_clk) << 16) | (ID16(MHz_hi, mV_hi, bus_clk))) 86 87 /* Format for storing IDs in our table. */ 88 #define FREQ_INFO_PWR(MHz, mV, bus_clk, mW) \ 89 { MHz, mV, ID16(MHz, mV, bus_clk), mW } 90 #define FREQ_INFO(MHz, mV, bus_clk) \ 91 FREQ_INFO_PWR(MHz, mV, bus_clk, CPUFREQ_VAL_UNKNOWN) 92 #define INTEL(tab, zhi, vhi, zlo, vlo, bus_clk) \ 93 { CPU_VENDOR_INTEL, ID32(zhi, vhi, zlo, vlo, bus_clk), tab } 94 #define CENTAUR(tab, zhi, vhi, zlo, vlo, bus_clk) \ 95 { CPU_VENDOR_CENTAUR, ID32(zhi, vhi, zlo, vlo, bus_clk), tab } 96 97 static int msr_info_enabled = 0; 98 TUNABLE_INT("hw.est.msr_info", &msr_info_enabled); 99 static int strict = -1; 100 TUNABLE_INT("hw.est.strict", &strict); 101 102 /* Default bus clock value for Centrino processors. */ 103 #define INTEL_BUS_CLK 100 104 105 /* XXX Update this if new CPUs have more settings. */ 106 #define EST_MAX_SETTINGS 10 107 CTASSERT(EST_MAX_SETTINGS <= MAX_SETTINGS); 108 109 /* Estimate in microseconds of latency for performing a transition. */ 110 #define EST_TRANS_LAT 1000 111 112 /* 113 * Frequency (MHz) and voltage (mV) settings. 114 * 115 * Dothan processors have multiple VID#s with different settings for 116 * each VID#. Since we can't uniquely identify this info 117 * without undisclosed methods from Intel, we can't support newer 118 * processors with this table method. If ACPI Px states are supported, 119 * we get info from them. 120 * 121 * Data from the "Intel Pentium M Processor Datasheet", 122 * Order Number 252612-003, Table 5. 123 */ 124 static freq_info PM17_130[] = { 125 /* 130nm 1.70GHz Pentium M */ 126 FREQ_INFO(1700, 1484, INTEL_BUS_CLK), 127 FREQ_INFO(1400, 1308, INTEL_BUS_CLK), 128 FREQ_INFO(1200, 1228, INTEL_BUS_CLK), 129 FREQ_INFO(1000, 1116, INTEL_BUS_CLK), 130 FREQ_INFO( 800, 1004, INTEL_BUS_CLK), 131 FREQ_INFO( 600, 956, INTEL_BUS_CLK), 132 FREQ_INFO( 0, 0, 1), 133 }; 134 static freq_info PM16_130[] = { 135 /* 130nm 1.60GHz Pentium M */ 136 FREQ_INFO(1600, 1484, INTEL_BUS_CLK), 137 FREQ_INFO(1400, 1420, INTEL_BUS_CLK), 138 FREQ_INFO(1200, 1276, INTEL_BUS_CLK), 139 FREQ_INFO(1000, 1164, INTEL_BUS_CLK), 140 FREQ_INFO( 800, 1036, INTEL_BUS_CLK), 141 FREQ_INFO( 600, 956, INTEL_BUS_CLK), 142 FREQ_INFO( 0, 0, 1), 143 }; 144 static freq_info PM15_130[] = { 145 /* 130nm 1.50GHz Pentium M */ 146 FREQ_INFO(1500, 1484, INTEL_BUS_CLK), 147 FREQ_INFO(1400, 1452, INTEL_BUS_CLK), 148 FREQ_INFO(1200, 1356, INTEL_BUS_CLK), 149 FREQ_INFO(1000, 1228, INTEL_BUS_CLK), 150 FREQ_INFO( 800, 1116, INTEL_BUS_CLK), 151 FREQ_INFO( 600, 956, INTEL_BUS_CLK), 152 FREQ_INFO( 0, 0, 1), 153 }; 154 static freq_info PM14_130[] = { 155 /* 130nm 1.40GHz Pentium M */ 156 FREQ_INFO(1400, 1484, INTEL_BUS_CLK), 157 FREQ_INFO(1200, 1436, INTEL_BUS_CLK), 158 FREQ_INFO(1000, 1308, INTEL_BUS_CLK), 159 FREQ_INFO( 800, 1180, INTEL_BUS_CLK), 160 FREQ_INFO( 600, 956, INTEL_BUS_CLK), 161 FREQ_INFO( 0, 0, 1), 162 }; 163 static freq_info PM13_130[] = { 164 /* 130nm 1.30GHz Pentium M */ 165 FREQ_INFO(1300, 1388, INTEL_BUS_CLK), 166 FREQ_INFO(1200, 1356, INTEL_BUS_CLK), 167 FREQ_INFO(1000, 1292, INTEL_BUS_CLK), 168 FREQ_INFO( 800, 1260, INTEL_BUS_CLK), 169 FREQ_INFO( 600, 956, INTEL_BUS_CLK), 170 FREQ_INFO( 0, 0, 1), 171 }; 172 static freq_info PM13_LV_130[] = { 173 /* 130nm 1.30GHz Low Voltage Pentium M */ 174 FREQ_INFO(1300, 1180, INTEL_BUS_CLK), 175 FREQ_INFO(1200, 1164, INTEL_BUS_CLK), 176 FREQ_INFO(1100, 1100, INTEL_BUS_CLK), 177 FREQ_INFO(1000, 1020, INTEL_BUS_CLK), 178 FREQ_INFO( 900, 1004, INTEL_BUS_CLK), 179 FREQ_INFO( 800, 988, INTEL_BUS_CLK), 180 FREQ_INFO( 600, 956, INTEL_BUS_CLK), 181 FREQ_INFO( 0, 0, 1), 182 }; 183 static freq_info PM12_LV_130[] = { 184 /* 130 nm 1.20GHz Low Voltage Pentium M */ 185 FREQ_INFO(1200, 1180, INTEL_BUS_CLK), 186 FREQ_INFO(1100, 1164, INTEL_BUS_CLK), 187 FREQ_INFO(1000, 1100, INTEL_BUS_CLK), 188 FREQ_INFO( 900, 1020, INTEL_BUS_CLK), 189 FREQ_INFO( 800, 1004, INTEL_BUS_CLK), 190 FREQ_INFO( 600, 956, INTEL_BUS_CLK), 191 FREQ_INFO( 0, 0, 1), 192 }; 193 static freq_info PM11_LV_130[] = { 194 /* 130 nm 1.10GHz Low Voltage Pentium M */ 195 FREQ_INFO(1100, 1180, INTEL_BUS_CLK), 196 FREQ_INFO(1000, 1164, INTEL_BUS_CLK), 197 FREQ_INFO( 900, 1100, INTEL_BUS_CLK), 198 FREQ_INFO( 800, 1020, INTEL_BUS_CLK), 199 FREQ_INFO( 600, 956, INTEL_BUS_CLK), 200 FREQ_INFO( 0, 0, 1), 201 }; 202 static freq_info PM11_ULV_130[] = { 203 /* 130 nm 1.10GHz Ultra Low Voltage Pentium M */ 204 FREQ_INFO(1100, 1004, INTEL_BUS_CLK), 205 FREQ_INFO(1000, 988, INTEL_BUS_CLK), 206 FREQ_INFO( 900, 972, INTEL_BUS_CLK), 207 FREQ_INFO( 800, 956, INTEL_BUS_CLK), 208 FREQ_INFO( 600, 844, INTEL_BUS_CLK), 209 FREQ_INFO( 0, 0, 1), 210 }; 211 static freq_info PM10_ULV_130[] = { 212 /* 130 nm 1.00GHz Ultra Low Voltage Pentium M */ 213 FREQ_INFO(1000, 1004, INTEL_BUS_CLK), 214 FREQ_INFO( 900, 988, INTEL_BUS_CLK), 215 FREQ_INFO( 800, 972, INTEL_BUS_CLK), 216 FREQ_INFO( 600, 844, INTEL_BUS_CLK), 217 FREQ_INFO( 0, 0, 1), 218 }; 219 220 /* 221 * Data from "Intel Pentium M Processor on 90nm Process with 222 * 2-MB L2 Cache Datasheet", Order Number 302189-008, Table 5. 223 */ 224 static freq_info PM_765A_90[] = { 225 /* 90 nm 2.10GHz Pentium M, VID #A */ 226 FREQ_INFO(2100, 1340, INTEL_BUS_CLK), 227 FREQ_INFO(1800, 1276, INTEL_BUS_CLK), 228 FREQ_INFO(1600, 1228, INTEL_BUS_CLK), 229 FREQ_INFO(1400, 1180, INTEL_BUS_CLK), 230 FREQ_INFO(1200, 1132, INTEL_BUS_CLK), 231 FREQ_INFO(1000, 1084, INTEL_BUS_CLK), 232 FREQ_INFO( 800, 1036, INTEL_BUS_CLK), 233 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 234 FREQ_INFO( 0, 0, 1), 235 }; 236 static freq_info PM_765B_90[] = { 237 /* 90 nm 2.10GHz Pentium M, VID #B */ 238 FREQ_INFO(2100, 1324, INTEL_BUS_CLK), 239 FREQ_INFO(1800, 1260, INTEL_BUS_CLK), 240 FREQ_INFO(1600, 1212, INTEL_BUS_CLK), 241 FREQ_INFO(1400, 1180, INTEL_BUS_CLK), 242 FREQ_INFO(1200, 1132, INTEL_BUS_CLK), 243 FREQ_INFO(1000, 1084, INTEL_BUS_CLK), 244 FREQ_INFO( 800, 1036, INTEL_BUS_CLK), 245 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 246 FREQ_INFO( 0, 0, 1), 247 }; 248 static freq_info PM_765C_90[] = { 249 /* 90 nm 2.10GHz Pentium M, VID #C */ 250 FREQ_INFO(2100, 1308, INTEL_BUS_CLK), 251 FREQ_INFO(1800, 1244, INTEL_BUS_CLK), 252 FREQ_INFO(1600, 1212, INTEL_BUS_CLK), 253 FREQ_INFO(1400, 1164, INTEL_BUS_CLK), 254 FREQ_INFO(1200, 1116, INTEL_BUS_CLK), 255 FREQ_INFO(1000, 1084, INTEL_BUS_CLK), 256 FREQ_INFO( 800, 1036, INTEL_BUS_CLK), 257 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 258 FREQ_INFO( 0, 0, 1), 259 }; 260 static freq_info PM_765E_90[] = { 261 /* 90 nm 2.10GHz Pentium M, VID #E */ 262 FREQ_INFO(2100, 1356, INTEL_BUS_CLK), 263 FREQ_INFO(1800, 1292, INTEL_BUS_CLK), 264 FREQ_INFO(1600, 1244, INTEL_BUS_CLK), 265 FREQ_INFO(1400, 1196, INTEL_BUS_CLK), 266 FREQ_INFO(1200, 1148, INTEL_BUS_CLK), 267 FREQ_INFO(1000, 1100, INTEL_BUS_CLK), 268 FREQ_INFO( 800, 1052, INTEL_BUS_CLK), 269 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 270 FREQ_INFO( 0, 0, 1), 271 }; 272 static freq_info PM_755A_90[] = { 273 /* 90 nm 2.00GHz Pentium M, VID #A */ 274 FREQ_INFO(2000, 1340, INTEL_BUS_CLK), 275 FREQ_INFO(1800, 1292, INTEL_BUS_CLK), 276 FREQ_INFO(1600, 1244, INTEL_BUS_CLK), 277 FREQ_INFO(1400, 1196, INTEL_BUS_CLK), 278 FREQ_INFO(1200, 1148, INTEL_BUS_CLK), 279 FREQ_INFO(1000, 1100, INTEL_BUS_CLK), 280 FREQ_INFO( 800, 1052, INTEL_BUS_CLK), 281 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 282 FREQ_INFO( 0, 0, 1), 283 }; 284 static freq_info PM_755B_90[] = { 285 /* 90 nm 2.00GHz Pentium M, VID #B */ 286 FREQ_INFO(2000, 1324, INTEL_BUS_CLK), 287 FREQ_INFO(1800, 1276, INTEL_BUS_CLK), 288 FREQ_INFO(1600, 1228, INTEL_BUS_CLK), 289 FREQ_INFO(1400, 1180, INTEL_BUS_CLK), 290 FREQ_INFO(1200, 1132, INTEL_BUS_CLK), 291 FREQ_INFO(1000, 1084, INTEL_BUS_CLK), 292 FREQ_INFO( 800, 1036, INTEL_BUS_CLK), 293 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 294 FREQ_INFO( 0, 0, 1), 295 }; 296 static freq_info PM_755C_90[] = { 297 /* 90 nm 2.00GHz Pentium M, VID #C */ 298 FREQ_INFO(2000, 1308, INTEL_BUS_CLK), 299 FREQ_INFO(1800, 1276, INTEL_BUS_CLK), 300 FREQ_INFO(1600, 1228, INTEL_BUS_CLK), 301 FREQ_INFO(1400, 1180, INTEL_BUS_CLK), 302 FREQ_INFO(1200, 1132, INTEL_BUS_CLK), 303 FREQ_INFO(1000, 1084, INTEL_BUS_CLK), 304 FREQ_INFO( 800, 1036, INTEL_BUS_CLK), 305 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 306 FREQ_INFO( 0, 0, 1), 307 }; 308 static freq_info PM_755D_90[] = { 309 /* 90 nm 2.00GHz Pentium M, VID #D */ 310 FREQ_INFO(2000, 1276, INTEL_BUS_CLK), 311 FREQ_INFO(1800, 1244, INTEL_BUS_CLK), 312 FREQ_INFO(1600, 1196, INTEL_BUS_CLK), 313 FREQ_INFO(1400, 1164, INTEL_BUS_CLK), 314 FREQ_INFO(1200, 1116, INTEL_BUS_CLK), 315 FREQ_INFO(1000, 1084, INTEL_BUS_CLK), 316 FREQ_INFO( 800, 1036, INTEL_BUS_CLK), 317 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 318 FREQ_INFO( 0, 0, 1), 319 }; 320 static freq_info PM_745A_90[] = { 321 /* 90 nm 1.80GHz Pentium M, VID #A */ 322 FREQ_INFO(1800, 1340, INTEL_BUS_CLK), 323 FREQ_INFO(1600, 1292, INTEL_BUS_CLK), 324 FREQ_INFO(1400, 1228, INTEL_BUS_CLK), 325 FREQ_INFO(1200, 1164, INTEL_BUS_CLK), 326 FREQ_INFO(1000, 1116, INTEL_BUS_CLK), 327 FREQ_INFO( 800, 1052, INTEL_BUS_CLK), 328 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 329 FREQ_INFO( 0, 0, 1), 330 }; 331 static freq_info PM_745B_90[] = { 332 /* 90 nm 1.80GHz Pentium M, VID #B */ 333 FREQ_INFO(1800, 1324, INTEL_BUS_CLK), 334 FREQ_INFO(1600, 1276, INTEL_BUS_CLK), 335 FREQ_INFO(1400, 1212, INTEL_BUS_CLK), 336 FREQ_INFO(1200, 1164, INTEL_BUS_CLK), 337 FREQ_INFO(1000, 1116, INTEL_BUS_CLK), 338 FREQ_INFO( 800, 1052, INTEL_BUS_CLK), 339 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 340 FREQ_INFO( 0, 0, 1), 341 }; 342 static freq_info PM_745C_90[] = { 343 /* 90 nm 1.80GHz Pentium M, VID #C */ 344 FREQ_INFO(1800, 1308, INTEL_BUS_CLK), 345 FREQ_INFO(1600, 1260, INTEL_BUS_CLK), 346 FREQ_INFO(1400, 1212, INTEL_BUS_CLK), 347 FREQ_INFO(1200, 1148, INTEL_BUS_CLK), 348 FREQ_INFO(1000, 1100, INTEL_BUS_CLK), 349 FREQ_INFO( 800, 1052, INTEL_BUS_CLK), 350 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 351 FREQ_INFO( 0, 0, 1), 352 }; 353 static freq_info PM_745D_90[] = { 354 /* 90 nm 1.80GHz Pentium M, VID #D */ 355 FREQ_INFO(1800, 1276, INTEL_BUS_CLK), 356 FREQ_INFO(1600, 1228, INTEL_BUS_CLK), 357 FREQ_INFO(1400, 1180, INTEL_BUS_CLK), 358 FREQ_INFO(1200, 1132, INTEL_BUS_CLK), 359 FREQ_INFO(1000, 1084, INTEL_BUS_CLK), 360 FREQ_INFO( 800, 1036, INTEL_BUS_CLK), 361 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 362 FREQ_INFO( 0, 0, 1), 363 }; 364 static freq_info PM_735A_90[] = { 365 /* 90 nm 1.70GHz Pentium M, VID #A */ 366 FREQ_INFO(1700, 1340, INTEL_BUS_CLK), 367 FREQ_INFO(1400, 1244, INTEL_BUS_CLK), 368 FREQ_INFO(1200, 1180, INTEL_BUS_CLK), 369 FREQ_INFO(1000, 1116, INTEL_BUS_CLK), 370 FREQ_INFO( 800, 1052, INTEL_BUS_CLK), 371 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 372 FREQ_INFO( 0, 0, 1), 373 }; 374 static freq_info PM_735B_90[] = { 375 /* 90 nm 1.70GHz Pentium M, VID #B */ 376 FREQ_INFO(1700, 1324, INTEL_BUS_CLK), 377 FREQ_INFO(1400, 1244, INTEL_BUS_CLK), 378 FREQ_INFO(1200, 1180, INTEL_BUS_CLK), 379 FREQ_INFO(1000, 1116, INTEL_BUS_CLK), 380 FREQ_INFO( 800, 1052, INTEL_BUS_CLK), 381 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 382 FREQ_INFO( 0, 0, 1), 383 }; 384 static freq_info PM_735C_90[] = { 385 /* 90 nm 1.70GHz Pentium M, VID #C */ 386 FREQ_INFO(1700, 1308, INTEL_BUS_CLK), 387 FREQ_INFO(1400, 1228, INTEL_BUS_CLK), 388 FREQ_INFO(1200, 1164, INTEL_BUS_CLK), 389 FREQ_INFO(1000, 1116, INTEL_BUS_CLK), 390 FREQ_INFO( 800, 1052, INTEL_BUS_CLK), 391 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 392 FREQ_INFO( 0, 0, 1), 393 }; 394 static freq_info PM_735D_90[] = { 395 /* 90 nm 1.70GHz Pentium M, VID #D */ 396 FREQ_INFO(1700, 1276, INTEL_BUS_CLK), 397 FREQ_INFO(1400, 1212, INTEL_BUS_CLK), 398 FREQ_INFO(1200, 1148, INTEL_BUS_CLK), 399 FREQ_INFO(1000, 1100, INTEL_BUS_CLK), 400 FREQ_INFO( 800, 1052, INTEL_BUS_CLK), 401 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 402 FREQ_INFO( 0, 0, 1), 403 }; 404 static freq_info PM_725A_90[] = { 405 /* 90 nm 1.60GHz Pentium M, VID #A */ 406 FREQ_INFO(1600, 1340, INTEL_BUS_CLK), 407 FREQ_INFO(1400, 1276, INTEL_BUS_CLK), 408 FREQ_INFO(1200, 1212, INTEL_BUS_CLK), 409 FREQ_INFO(1000, 1132, INTEL_BUS_CLK), 410 FREQ_INFO( 800, 1068, INTEL_BUS_CLK), 411 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 412 FREQ_INFO( 0, 0, 1), 413 }; 414 static freq_info PM_725B_90[] = { 415 /* 90 nm 1.60GHz Pentium M, VID #B */ 416 FREQ_INFO(1600, 1324, INTEL_BUS_CLK), 417 FREQ_INFO(1400, 1260, INTEL_BUS_CLK), 418 FREQ_INFO(1200, 1196, INTEL_BUS_CLK), 419 FREQ_INFO(1000, 1132, INTEL_BUS_CLK), 420 FREQ_INFO( 800, 1068, INTEL_BUS_CLK), 421 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 422 FREQ_INFO( 0, 0, 1), 423 }; 424 static freq_info PM_725C_90[] = { 425 /* 90 nm 1.60GHz Pentium M, VID #C */ 426 FREQ_INFO(1600, 1308, INTEL_BUS_CLK), 427 FREQ_INFO(1400, 1244, INTEL_BUS_CLK), 428 FREQ_INFO(1200, 1180, INTEL_BUS_CLK), 429 FREQ_INFO(1000, 1116, INTEL_BUS_CLK), 430 FREQ_INFO( 800, 1052, INTEL_BUS_CLK), 431 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 432 FREQ_INFO( 0, 0, 1), 433 }; 434 static freq_info PM_725D_90[] = { 435 /* 90 nm 1.60GHz Pentium M, VID #D */ 436 FREQ_INFO(1600, 1276, INTEL_BUS_CLK), 437 FREQ_INFO(1400, 1228, INTEL_BUS_CLK), 438 FREQ_INFO(1200, 1164, INTEL_BUS_CLK), 439 FREQ_INFO(1000, 1116, INTEL_BUS_CLK), 440 FREQ_INFO( 800, 1052, INTEL_BUS_CLK), 441 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 442 FREQ_INFO( 0, 0, 1), 443 }; 444 static freq_info PM_715A_90[] = { 445 /* 90 nm 1.50GHz Pentium M, VID #A */ 446 FREQ_INFO(1500, 1340, INTEL_BUS_CLK), 447 FREQ_INFO(1200, 1228, INTEL_BUS_CLK), 448 FREQ_INFO(1000, 1148, INTEL_BUS_CLK), 449 FREQ_INFO( 800, 1068, INTEL_BUS_CLK), 450 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 451 FREQ_INFO( 0, 0, 1), 452 }; 453 static freq_info PM_715B_90[] = { 454 /* 90 nm 1.50GHz Pentium M, VID #B */ 455 FREQ_INFO(1500, 1324, INTEL_BUS_CLK), 456 FREQ_INFO(1200, 1212, INTEL_BUS_CLK), 457 FREQ_INFO(1000, 1148, INTEL_BUS_CLK), 458 FREQ_INFO( 800, 1068, INTEL_BUS_CLK), 459 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 460 FREQ_INFO( 0, 0, 1), 461 }; 462 static freq_info PM_715C_90[] = { 463 /* 90 nm 1.50GHz Pentium M, VID #C */ 464 FREQ_INFO(1500, 1308, INTEL_BUS_CLK), 465 FREQ_INFO(1200, 1212, INTEL_BUS_CLK), 466 FREQ_INFO(1000, 1132, INTEL_BUS_CLK), 467 FREQ_INFO( 800, 1068, INTEL_BUS_CLK), 468 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 469 FREQ_INFO( 0, 0, 1), 470 }; 471 static freq_info PM_715D_90[] = { 472 /* 90 nm 1.50GHz Pentium M, VID #D */ 473 FREQ_INFO(1500, 1276, INTEL_BUS_CLK), 474 FREQ_INFO(1200, 1180, INTEL_BUS_CLK), 475 FREQ_INFO(1000, 1116, INTEL_BUS_CLK), 476 FREQ_INFO( 800, 1052, INTEL_BUS_CLK), 477 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 478 FREQ_INFO( 0, 0, 1), 479 }; 480 static freq_info PM_778_90[] = { 481 /* 90 nm 1.60GHz Low Voltage Pentium M */ 482 FREQ_INFO(1600, 1116, INTEL_BUS_CLK), 483 FREQ_INFO(1500, 1116, INTEL_BUS_CLK), 484 FREQ_INFO(1400, 1100, INTEL_BUS_CLK), 485 FREQ_INFO(1300, 1084, INTEL_BUS_CLK), 486 FREQ_INFO(1200, 1068, INTEL_BUS_CLK), 487 FREQ_INFO(1100, 1052, INTEL_BUS_CLK), 488 FREQ_INFO(1000, 1052, INTEL_BUS_CLK), 489 FREQ_INFO( 900, 1036, INTEL_BUS_CLK), 490 FREQ_INFO( 800, 1020, INTEL_BUS_CLK), 491 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 492 FREQ_INFO( 0, 0, 1), 493 }; 494 static freq_info PM_758_90[] = { 495 /* 90 nm 1.50GHz Low Voltage Pentium M */ 496 FREQ_INFO(1500, 1116, INTEL_BUS_CLK), 497 FREQ_INFO(1400, 1116, INTEL_BUS_CLK), 498 FREQ_INFO(1300, 1100, INTEL_BUS_CLK), 499 FREQ_INFO(1200, 1084, INTEL_BUS_CLK), 500 FREQ_INFO(1100, 1068, INTEL_BUS_CLK), 501 FREQ_INFO(1000, 1052, INTEL_BUS_CLK), 502 FREQ_INFO( 900, 1036, INTEL_BUS_CLK), 503 FREQ_INFO( 800, 1020, INTEL_BUS_CLK), 504 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 505 FREQ_INFO( 0, 0, 1), 506 }; 507 static freq_info PM_738_90[] = { 508 /* 90 nm 1.40GHz Low Voltage Pentium M */ 509 FREQ_INFO(1400, 1116, INTEL_BUS_CLK), 510 FREQ_INFO(1300, 1116, INTEL_BUS_CLK), 511 FREQ_INFO(1200, 1100, INTEL_BUS_CLK), 512 FREQ_INFO(1100, 1068, INTEL_BUS_CLK), 513 FREQ_INFO(1000, 1052, INTEL_BUS_CLK), 514 FREQ_INFO( 900, 1036, INTEL_BUS_CLK), 515 FREQ_INFO( 800, 1020, INTEL_BUS_CLK), 516 FREQ_INFO( 600, 988, INTEL_BUS_CLK), 517 FREQ_INFO( 0, 0, 1), 518 }; 519 static freq_info PM_773G_90[] = { 520 /* 90 nm 1.30GHz Ultra Low Voltage Pentium M, VID #G */ 521 FREQ_INFO(1300, 956, INTEL_BUS_CLK), 522 FREQ_INFO(1200, 940, INTEL_BUS_CLK), 523 FREQ_INFO(1100, 924, INTEL_BUS_CLK), 524 FREQ_INFO(1000, 908, INTEL_BUS_CLK), 525 FREQ_INFO( 900, 876, INTEL_BUS_CLK), 526 FREQ_INFO( 800, 860, INTEL_BUS_CLK), 527 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 528 }; 529 static freq_info PM_773H_90[] = { 530 /* 90 nm 1.30GHz Ultra Low Voltage Pentium M, VID #H */ 531 FREQ_INFO(1300, 940, INTEL_BUS_CLK), 532 FREQ_INFO(1200, 924, INTEL_BUS_CLK), 533 FREQ_INFO(1100, 908, INTEL_BUS_CLK), 534 FREQ_INFO(1000, 892, INTEL_BUS_CLK), 535 FREQ_INFO( 900, 876, INTEL_BUS_CLK), 536 FREQ_INFO( 800, 860, INTEL_BUS_CLK), 537 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 538 }; 539 static freq_info PM_773I_90[] = { 540 /* 90 nm 1.30GHz Ultra Low Voltage Pentium M, VID #I */ 541 FREQ_INFO(1300, 924, INTEL_BUS_CLK), 542 FREQ_INFO(1200, 908, INTEL_BUS_CLK), 543 FREQ_INFO(1100, 892, INTEL_BUS_CLK), 544 FREQ_INFO(1000, 876, INTEL_BUS_CLK), 545 FREQ_INFO( 900, 860, INTEL_BUS_CLK), 546 FREQ_INFO( 800, 844, INTEL_BUS_CLK), 547 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 548 }; 549 static freq_info PM_773J_90[] = { 550 /* 90 nm 1.30GHz Ultra Low Voltage Pentium M, VID #J */ 551 FREQ_INFO(1300, 908, INTEL_BUS_CLK), 552 FREQ_INFO(1200, 908, INTEL_BUS_CLK), 553 FREQ_INFO(1100, 892, INTEL_BUS_CLK), 554 FREQ_INFO(1000, 876, INTEL_BUS_CLK), 555 FREQ_INFO( 900, 860, INTEL_BUS_CLK), 556 FREQ_INFO( 800, 844, INTEL_BUS_CLK), 557 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 558 }; 559 static freq_info PM_773K_90[] = { 560 /* 90 nm 1.30GHz Ultra Low Voltage Pentium M, VID #K */ 561 FREQ_INFO(1300, 892, INTEL_BUS_CLK), 562 FREQ_INFO(1200, 892, INTEL_BUS_CLK), 563 FREQ_INFO(1100, 876, INTEL_BUS_CLK), 564 FREQ_INFO(1000, 860, INTEL_BUS_CLK), 565 FREQ_INFO( 900, 860, INTEL_BUS_CLK), 566 FREQ_INFO( 800, 844, INTEL_BUS_CLK), 567 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 568 }; 569 static freq_info PM_773L_90[] = { 570 /* 90 nm 1.30GHz Ultra Low Voltage Pentium M, VID #L */ 571 FREQ_INFO(1300, 876, INTEL_BUS_CLK), 572 FREQ_INFO(1200, 876, INTEL_BUS_CLK), 573 FREQ_INFO(1100, 860, INTEL_BUS_CLK), 574 FREQ_INFO(1000, 860, INTEL_BUS_CLK), 575 FREQ_INFO( 900, 844, INTEL_BUS_CLK), 576 FREQ_INFO( 800, 844, INTEL_BUS_CLK), 577 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 578 }; 579 static freq_info PM_753G_90[] = { 580 /* 90 nm 1.20GHz Ultra Low Voltage Pentium M, VID #G */ 581 FREQ_INFO(1200, 956, INTEL_BUS_CLK), 582 FREQ_INFO(1100, 940, INTEL_BUS_CLK), 583 FREQ_INFO(1000, 908, INTEL_BUS_CLK), 584 FREQ_INFO( 900, 892, INTEL_BUS_CLK), 585 FREQ_INFO( 800, 860, INTEL_BUS_CLK), 586 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 587 }; 588 static freq_info PM_753H_90[] = { 589 /* 90 nm 1.20GHz Ultra Low Voltage Pentium M, VID #H */ 590 FREQ_INFO(1200, 940, INTEL_BUS_CLK), 591 FREQ_INFO(1100, 924, INTEL_BUS_CLK), 592 FREQ_INFO(1000, 908, INTEL_BUS_CLK), 593 FREQ_INFO( 900, 876, INTEL_BUS_CLK), 594 FREQ_INFO( 800, 860, INTEL_BUS_CLK), 595 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 596 }; 597 static freq_info PM_753I_90[] = { 598 /* 90 nm 1.20GHz Ultra Low Voltage Pentium M, VID #I */ 599 FREQ_INFO(1200, 924, INTEL_BUS_CLK), 600 FREQ_INFO(1100, 908, INTEL_BUS_CLK), 601 FREQ_INFO(1000, 892, INTEL_BUS_CLK), 602 FREQ_INFO( 900, 876, INTEL_BUS_CLK), 603 FREQ_INFO( 800, 860, INTEL_BUS_CLK), 604 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 605 }; 606 static freq_info PM_753J_90[] = { 607 /* 90 nm 1.20GHz Ultra Low Voltage Pentium M, VID #J */ 608 FREQ_INFO(1200, 908, INTEL_BUS_CLK), 609 FREQ_INFO(1100, 892, INTEL_BUS_CLK), 610 FREQ_INFO(1000, 876, INTEL_BUS_CLK), 611 FREQ_INFO( 900, 860, INTEL_BUS_CLK), 612 FREQ_INFO( 800, 844, INTEL_BUS_CLK), 613 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 614 }; 615 static freq_info PM_753K_90[] = { 616 /* 90 nm 1.20GHz Ultra Low Voltage Pentium M, VID #K */ 617 FREQ_INFO(1200, 892, INTEL_BUS_CLK), 618 FREQ_INFO(1100, 892, INTEL_BUS_CLK), 619 FREQ_INFO(1000, 876, INTEL_BUS_CLK), 620 FREQ_INFO( 900, 860, INTEL_BUS_CLK), 621 FREQ_INFO( 800, 844, INTEL_BUS_CLK), 622 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 623 }; 624 static freq_info PM_753L_90[] = { 625 /* 90 nm 1.20GHz Ultra Low Voltage Pentium M, VID #L */ 626 FREQ_INFO(1200, 876, INTEL_BUS_CLK), 627 FREQ_INFO(1100, 876, INTEL_BUS_CLK), 628 FREQ_INFO(1000, 860, INTEL_BUS_CLK), 629 FREQ_INFO( 900, 844, INTEL_BUS_CLK), 630 FREQ_INFO( 800, 844, INTEL_BUS_CLK), 631 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 632 }; 633 634 static freq_info PM_733JG_90[] = { 635 /* 90 nm 1.10GHz Ultra Low Voltage Pentium M, VID #G */ 636 FREQ_INFO(1100, 956, INTEL_BUS_CLK), 637 FREQ_INFO(1000, 940, INTEL_BUS_CLK), 638 FREQ_INFO( 900, 908, INTEL_BUS_CLK), 639 FREQ_INFO( 800, 876, INTEL_BUS_CLK), 640 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 641 }; 642 static freq_info PM_733JH_90[] = { 643 /* 90 nm 1.10GHz Ultra Low Voltage Pentium M, VID #H */ 644 FREQ_INFO(1100, 940, INTEL_BUS_CLK), 645 FREQ_INFO(1000, 924, INTEL_BUS_CLK), 646 FREQ_INFO( 900, 892, INTEL_BUS_CLK), 647 FREQ_INFO( 800, 876, INTEL_BUS_CLK), 648 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 649 }; 650 static freq_info PM_733JI_90[] = { 651 /* 90 nm 1.10GHz Ultra Low Voltage Pentium M, VID #I */ 652 FREQ_INFO(1100, 924, INTEL_BUS_CLK), 653 FREQ_INFO(1000, 908, INTEL_BUS_CLK), 654 FREQ_INFO( 900, 892, INTEL_BUS_CLK), 655 FREQ_INFO( 800, 860, INTEL_BUS_CLK), 656 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 657 }; 658 static freq_info PM_733JJ_90[] = { 659 /* 90 nm 1.10GHz Ultra Low Voltage Pentium M, VID #J */ 660 FREQ_INFO(1100, 908, INTEL_BUS_CLK), 661 FREQ_INFO(1000, 892, INTEL_BUS_CLK), 662 FREQ_INFO( 900, 876, INTEL_BUS_CLK), 663 FREQ_INFO( 800, 860, INTEL_BUS_CLK), 664 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 665 }; 666 static freq_info PM_733JK_90[] = { 667 /* 90 nm 1.10GHz Ultra Low Voltage Pentium M, VID #K */ 668 FREQ_INFO(1100, 892, INTEL_BUS_CLK), 669 FREQ_INFO(1000, 876, INTEL_BUS_CLK), 670 FREQ_INFO( 900, 860, INTEL_BUS_CLK), 671 FREQ_INFO( 800, 844, INTEL_BUS_CLK), 672 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 673 }; 674 static freq_info PM_733JL_90[] = { 675 /* 90 nm 1.10GHz Ultra Low Voltage Pentium M, VID #L */ 676 FREQ_INFO(1100, 876, INTEL_BUS_CLK), 677 FREQ_INFO(1000, 876, INTEL_BUS_CLK), 678 FREQ_INFO( 900, 860, INTEL_BUS_CLK), 679 FREQ_INFO( 800, 844, INTEL_BUS_CLK), 680 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 681 }; 682 static freq_info PM_733_90[] = { 683 /* 90 nm 1.10GHz Ultra Low Voltage Pentium M */ 684 FREQ_INFO(1100, 940, INTEL_BUS_CLK), 685 FREQ_INFO(1000, 924, INTEL_BUS_CLK), 686 FREQ_INFO( 900, 892, INTEL_BUS_CLK), 687 FREQ_INFO( 800, 876, INTEL_BUS_CLK), 688 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 689 FREQ_INFO( 0, 0, 1), 690 }; 691 static freq_info PM_723_90[] = { 692 /* 90 nm 1.00GHz Ultra Low Voltage Pentium M */ 693 FREQ_INFO(1000, 940, INTEL_BUS_CLK), 694 FREQ_INFO( 900, 908, INTEL_BUS_CLK), 695 FREQ_INFO( 800, 876, INTEL_BUS_CLK), 696 FREQ_INFO( 600, 812, INTEL_BUS_CLK), 697 FREQ_INFO( 0, 0, 1), 698 }; 699 700 /* 701 * VIA C7-M 500 MHz FSB, 400 MHz FSB, and ULV variants. 702 * Data from the "VIA C7-M Processor BIOS Writer's Guide (v2.17)" datasheet. 703 */ 704 static freq_info C7M_795[] = { 705 /* 2.00GHz Centaur C7-M 533 Mhz FSB */ 706 FREQ_INFO_PWR(2000, 1148, 133, 20000), 707 FREQ_INFO_PWR(1867, 1132, 133, 18000), 708 FREQ_INFO_PWR(1600, 1100, 133, 15000), 709 FREQ_INFO_PWR(1467, 1052, 133, 13000), 710 FREQ_INFO_PWR(1200, 1004, 133, 10000), 711 FREQ_INFO_PWR( 800, 844, 133, 7000), 712 FREQ_INFO_PWR( 667, 844, 133, 6000), 713 FREQ_INFO_PWR( 533, 844, 133, 5000), 714 FREQ_INFO(0, 0, 1), 715 }; 716 static freq_info C7M_785[] = { 717 /* 1.80GHz Centaur C7-M 533 Mhz FSB */ 718 FREQ_INFO_PWR(1867, 1148, 133, 18000), 719 FREQ_INFO_PWR(1600, 1100, 133, 15000), 720 FREQ_INFO_PWR(1467, 1052, 133, 13000), 721 FREQ_INFO_PWR(1200, 1004, 133, 10000), 722 FREQ_INFO_PWR( 800, 844, 133, 7000), 723 FREQ_INFO_PWR( 667, 844, 133, 6000), 724 FREQ_INFO_PWR( 533, 844, 133, 5000), 725 FREQ_INFO(0, 0, 1), 726 }; 727 static freq_info C7M_765[] = { 728 /* 1.60GHz Centaur C7-M 533 Mhz FSB */ 729 FREQ_INFO_PWR(1600, 1084, 133, 15000), 730 FREQ_INFO_PWR(1467, 1052, 133, 13000), 731 FREQ_INFO_PWR(1200, 1004, 133, 10000), 732 FREQ_INFO_PWR( 800, 844, 133, 7000), 733 FREQ_INFO_PWR( 667, 844, 133, 6000), 734 FREQ_INFO_PWR( 533, 844, 133, 5000), 735 FREQ_INFO(0, 0, 1), 736 }; 737 738 static freq_info C7M_794[] = { 739 /* 2.00GHz Centaur C7-M 400 Mhz FSB */ 740 FREQ_INFO_PWR(2000, 1148, 100, 20000), 741 FREQ_INFO_PWR(1800, 1132, 100, 18000), 742 FREQ_INFO_PWR(1600, 1100, 100, 15000), 743 FREQ_INFO_PWR(1400, 1052, 100, 13000), 744 FREQ_INFO_PWR(1000, 1004, 100, 10000), 745 FREQ_INFO_PWR( 800, 844, 100, 7000), 746 FREQ_INFO_PWR( 600, 844, 100, 6000), 747 FREQ_INFO_PWR( 400, 844, 100, 5000), 748 FREQ_INFO(0, 0, 1), 749 }; 750 static freq_info C7M_784[] = { 751 /* 1.80GHz Centaur C7-M 400 Mhz FSB */ 752 FREQ_INFO_PWR(1800, 1148, 100, 18000), 753 FREQ_INFO_PWR(1600, 1100, 100, 15000), 754 FREQ_INFO_PWR(1400, 1052, 100, 13000), 755 FREQ_INFO_PWR(1000, 1004, 100, 10000), 756 FREQ_INFO_PWR( 800, 844, 100, 7000), 757 FREQ_INFO_PWR( 600, 844, 100, 6000), 758 FREQ_INFO_PWR( 400, 844, 100, 5000), 759 FREQ_INFO(0, 0, 1), 760 }; 761 static freq_info C7M_764[] = { 762 /* 1.60GHz Centaur C7-M 400 Mhz FSB */ 763 FREQ_INFO_PWR(1600, 1084, 100, 15000), 764 FREQ_INFO_PWR(1400, 1052, 100, 13000), 765 FREQ_INFO_PWR(1000, 1004, 100, 10000), 766 FREQ_INFO_PWR( 800, 844, 100, 7000), 767 FREQ_INFO_PWR( 600, 844, 100, 6000), 768 FREQ_INFO_PWR( 400, 844, 100, 5000), 769 FREQ_INFO(0, 0, 1), 770 }; 771 static freq_info C7M_754[] = { 772 /* 1.50GHz Centaur C7-M 400 Mhz FSB */ 773 FREQ_INFO_PWR(1500, 1004, 100, 12000), 774 FREQ_INFO_PWR(1400, 988, 100, 11000), 775 FREQ_INFO_PWR(1000, 940, 100, 9000), 776 FREQ_INFO_PWR( 800, 844, 100, 7000), 777 FREQ_INFO_PWR( 600, 844, 100, 6000), 778 FREQ_INFO_PWR( 400, 844, 100, 5000), 779 FREQ_INFO(0, 0, 1), 780 }; 781 static freq_info C7M_771[] = { 782 /* 1.20GHz Centaur C7-M 400 Mhz FSB */ 783 FREQ_INFO_PWR(1200, 860, 100, 7000), 784 FREQ_INFO_PWR(1000, 860, 100, 6000), 785 FREQ_INFO_PWR( 800, 844, 100, 5500), 786 FREQ_INFO_PWR( 600, 844, 100, 5000), 787 FREQ_INFO_PWR( 400, 844, 100, 4000), 788 FREQ_INFO(0, 0, 1), 789 }; 790 791 static freq_info C7M_775_ULV[] = { 792 /* 1.50GHz Centaur C7-M ULV */ 793 FREQ_INFO_PWR(1500, 956, 100, 7500), 794 FREQ_INFO_PWR(1400, 940, 100, 6000), 795 FREQ_INFO_PWR(1000, 860, 100, 5000), 796 FREQ_INFO_PWR( 800, 828, 100, 2800), 797 FREQ_INFO_PWR( 600, 796, 100, 2500), 798 FREQ_INFO_PWR( 400, 796, 100, 2000), 799 FREQ_INFO(0, 0, 1), 800 }; 801 static freq_info C7M_772_ULV[] = { 802 /* 1.20GHz Centaur C7-M ULV */ 803 FREQ_INFO_PWR(1200, 844, 100, 5000), 804 FREQ_INFO_PWR(1000, 844, 100, 4000), 805 FREQ_INFO_PWR( 800, 828, 100, 2800), 806 FREQ_INFO_PWR( 600, 796, 100, 2500), 807 FREQ_INFO_PWR( 400, 796, 100, 2000), 808 FREQ_INFO(0, 0, 1), 809 }; 810 static freq_info C7M_779_ULV[] = { 811 /* 1.00GHz Centaur C7-M ULV */ 812 FREQ_INFO_PWR(1000, 796, 100, 3500), 813 FREQ_INFO_PWR( 800, 796, 100, 2800), 814 FREQ_INFO_PWR( 600, 796, 100, 2500), 815 FREQ_INFO_PWR( 400, 796, 100, 2000), 816 FREQ_INFO(0, 0, 1), 817 }; 818 static freq_info C7M_770_ULV[] = { 819 /* 1.00GHz Centaur C7-M ULV */ 820 FREQ_INFO_PWR(1000, 844, 100, 5000), 821 FREQ_INFO_PWR( 800, 796, 100, 2800), 822 FREQ_INFO_PWR( 600, 796, 100, 2500), 823 FREQ_INFO_PWR( 400, 796, 100, 2000), 824 FREQ_INFO(0, 0, 1), 825 }; 826 827 static cpu_info ESTprocs[] = { 828 INTEL(PM17_130, 1700, 1484, 600, 956, INTEL_BUS_CLK), 829 INTEL(PM16_130, 1600, 1484, 600, 956, INTEL_BUS_CLK), 830 INTEL(PM15_130, 1500, 1484, 600, 956, INTEL_BUS_CLK), 831 INTEL(PM14_130, 1400, 1484, 600, 956, INTEL_BUS_CLK), 832 INTEL(PM13_130, 1300, 1388, 600, 956, INTEL_BUS_CLK), 833 INTEL(PM13_LV_130, 1300, 1180, 600, 956, INTEL_BUS_CLK), 834 INTEL(PM12_LV_130, 1200, 1180, 600, 956, INTEL_BUS_CLK), 835 INTEL(PM11_LV_130, 1100, 1180, 600, 956, INTEL_BUS_CLK), 836 INTEL(PM11_ULV_130, 1100, 1004, 600, 844, INTEL_BUS_CLK), 837 INTEL(PM10_ULV_130, 1000, 1004, 600, 844, INTEL_BUS_CLK), 838 INTEL(PM_765A_90, 2100, 1340, 600, 988, INTEL_BUS_CLK), 839 INTEL(PM_765B_90, 2100, 1324, 600, 988, INTEL_BUS_CLK), 840 INTEL(PM_765C_90, 2100, 1308, 600, 988, INTEL_BUS_CLK), 841 INTEL(PM_765E_90, 2100, 1356, 600, 988, INTEL_BUS_CLK), 842 INTEL(PM_755A_90, 2000, 1340, 600, 988, INTEL_BUS_CLK), 843 INTEL(PM_755B_90, 2000, 1324, 600, 988, INTEL_BUS_CLK), 844 INTEL(PM_755C_90, 2000, 1308, 600, 988, INTEL_BUS_CLK), 845 INTEL(PM_755D_90, 2000, 1276, 600, 988, INTEL_BUS_CLK), 846 INTEL(PM_745A_90, 1800, 1340, 600, 988, INTEL_BUS_CLK), 847 INTEL(PM_745B_90, 1800, 1324, 600, 988, INTEL_BUS_CLK), 848 INTEL(PM_745C_90, 1800, 1308, 600, 988, INTEL_BUS_CLK), 849 INTEL(PM_745D_90, 1800, 1276, 600, 988, INTEL_BUS_CLK), 850 INTEL(PM_735A_90, 1700, 1340, 600, 988, INTEL_BUS_CLK), 851 INTEL(PM_735B_90, 1700, 1324, 600, 988, INTEL_BUS_CLK), 852 INTEL(PM_735C_90, 1700, 1308, 600, 988, INTEL_BUS_CLK), 853 INTEL(PM_735D_90, 1700, 1276, 600, 988, INTEL_BUS_CLK), 854 INTEL(PM_725A_90, 1600, 1340, 600, 988, INTEL_BUS_CLK), 855 INTEL(PM_725B_90, 1600, 1324, 600, 988, INTEL_BUS_CLK), 856 INTEL(PM_725C_90, 1600, 1308, 600, 988, INTEL_BUS_CLK), 857 INTEL(PM_725D_90, 1600, 1276, 600, 988, INTEL_BUS_CLK), 858 INTEL(PM_715A_90, 1500, 1340, 600, 988, INTEL_BUS_CLK), 859 INTEL(PM_715B_90, 1500, 1324, 600, 988, INTEL_BUS_CLK), 860 INTEL(PM_715C_90, 1500, 1308, 600, 988, INTEL_BUS_CLK), 861 INTEL(PM_715D_90, 1500, 1276, 600, 988, INTEL_BUS_CLK), 862 INTEL(PM_778_90, 1600, 1116, 600, 988, INTEL_BUS_CLK), 863 INTEL(PM_758_90, 1500, 1116, 600, 988, INTEL_BUS_CLK), 864 INTEL(PM_738_90, 1400, 1116, 600, 988, INTEL_BUS_CLK), 865 INTEL(PM_773G_90, 1300, 956, 600, 812, INTEL_BUS_CLK), 866 INTEL(PM_773H_90, 1300, 940, 600, 812, INTEL_BUS_CLK), 867 INTEL(PM_773I_90, 1300, 924, 600, 812, INTEL_BUS_CLK), 868 INTEL(PM_773J_90, 1300, 908, 600, 812, INTEL_BUS_CLK), 869 INTEL(PM_773K_90, 1300, 892, 600, 812, INTEL_BUS_CLK), 870 INTEL(PM_773L_90, 1300, 876, 600, 812, INTEL_BUS_CLK), 871 INTEL(PM_753G_90, 1200, 956, 600, 812, INTEL_BUS_CLK), 872 INTEL(PM_753H_90, 1200, 940, 600, 812, INTEL_BUS_CLK), 873 INTEL(PM_753I_90, 1200, 924, 600, 812, INTEL_BUS_CLK), 874 INTEL(PM_753J_90, 1200, 908, 600, 812, INTEL_BUS_CLK), 875 INTEL(PM_753K_90, 1200, 892, 600, 812, INTEL_BUS_CLK), 876 INTEL(PM_753L_90, 1200, 876, 600, 812, INTEL_BUS_CLK), 877 INTEL(PM_733JG_90, 1100, 956, 600, 812, INTEL_BUS_CLK), 878 INTEL(PM_733JH_90, 1100, 940, 600, 812, INTEL_BUS_CLK), 879 INTEL(PM_733JI_90, 1100, 924, 600, 812, INTEL_BUS_CLK), 880 INTEL(PM_733JJ_90, 1100, 908, 600, 812, INTEL_BUS_CLK), 881 INTEL(PM_733JK_90, 1100, 892, 600, 812, INTEL_BUS_CLK), 882 INTEL(PM_733JL_90, 1100, 876, 600, 812, INTEL_BUS_CLK), 883 INTEL(PM_733_90, 1100, 940, 600, 812, INTEL_BUS_CLK), 884 INTEL(PM_723_90, 1000, 940, 600, 812, INTEL_BUS_CLK), 885 886 CENTAUR(C7M_795, 2000, 1148, 533, 844, 133), 887 CENTAUR(C7M_794, 2000, 1148, 400, 844, 100), 888 CENTAUR(C7M_785, 1867, 1148, 533, 844, 133), 889 CENTAUR(C7M_784, 1800, 1148, 400, 844, 100), 890 CENTAUR(C7M_765, 1600, 1084, 533, 844, 133), 891 CENTAUR(C7M_764, 1600, 1084, 400, 844, 100), 892 CENTAUR(C7M_754, 1500, 1004, 400, 844, 100), 893 CENTAUR(C7M_775_ULV, 1500, 956, 400, 796, 100), 894 CENTAUR(C7M_771, 1200, 860, 400, 844, 100), 895 CENTAUR(C7M_772_ULV, 1200, 844, 400, 796, 100), 896 CENTAUR(C7M_779_ULV, 1000, 796, 400, 796, 100), 897 CENTAUR(C7M_770_ULV, 1000, 844, 400, 796, 100), 898 { 0, 0, NULL }, 899 }; 900 901 static void est_identify(driver_t *driver, device_t parent); 902 static int est_features(driver_t *driver, u_int *features); 903 static int est_probe(device_t parent); 904 static int est_attach(device_t parent); 905 static int est_detach(device_t parent); 906 static int est_get_info(device_t dev); 907 static int est_acpi_info(device_t dev, freq_info **freqs); 908 static int est_table_info(device_t dev, uint64_t msr, freq_info **freqs); 909 static int est_msr_info(device_t dev, uint64_t msr, freq_info **freqs); 910 static freq_info *est_get_current(freq_info *freq_list); 911 static int est_settings(device_t dev, struct cf_setting *sets, int *count); 912 static int est_set(device_t dev, const struct cf_setting *set); 913 static int est_get(device_t dev, struct cf_setting *set); 914 static int est_type(device_t dev, int *type); 915 static int est_set_id16(device_t dev, uint16_t id16, int need_check); 916 static void est_get_id16(uint16_t *id16_p); 917 918 static device_method_t est_methods[] = { 919 /* Device interface */ 920 DEVMETHOD(device_identify, est_identify), 921 DEVMETHOD(device_probe, est_probe), 922 DEVMETHOD(device_attach, est_attach), 923 DEVMETHOD(device_detach, est_detach), 924 925 /* cpufreq interface */ 926 DEVMETHOD(cpufreq_drv_set, est_set), 927 DEVMETHOD(cpufreq_drv_get, est_get), 928 DEVMETHOD(cpufreq_drv_type, est_type), 929 DEVMETHOD(cpufreq_drv_settings, est_settings), 930 931 /* ACPI interface */ 932 DEVMETHOD(acpi_get_features, est_features), 933 934 {0, 0} 935 }; 936 937 static driver_t est_driver = { 938 "est", 939 est_methods, 940 sizeof(struct est_softc), 941 }; 942 943 static devclass_t est_devclass; 944 DRIVER_MODULE(est, cpu, est_driver, est_devclass, 0, 0); 945 946 static int 947 est_features(driver_t *driver, u_int *features) 948 { 949 950 /* 951 * Notify the ACPI CPU that we support direct access to MSRs. 952 * XXX C1 "I/O then Halt" seems necessary for some broken BIOS. 953 */ 954 *features = ACPI_CAP_PERF_MSRS | ACPI_CAP_C1_IO_HALT; 955 return (0); 956 } 957 958 static void 959 est_identify(driver_t *driver, device_t parent) 960 { 961 device_t child; 962 963 /* Make sure we're not being doubly invoked. */ 964 if (device_find_child(parent, "est", -1) != NULL) 965 return; 966 967 /* Check that CPUID is supported and the vendor is Intel.*/ 968 if (cpu_high == 0 || (cpu_vendor_id != CPU_VENDOR_INTEL && 969 cpu_vendor_id != CPU_VENDOR_CENTAUR)) 970 return; 971 972 /* 973 * Check if the CPU supports EST. 974 */ 975 if (!(cpu_feature2 & CPUID2_EST)) 976 return; 977 978 /* 979 * We add a child for each CPU since settings must be performed 980 * on each CPU in the SMP case. 981 */ 982 child = BUS_ADD_CHILD(parent, 10, "est", -1); 983 if (child == NULL) 984 device_printf(parent, "add est child failed\n"); 985 } 986 987 static int 988 est_probe(device_t dev) 989 { 990 device_t perf_dev; 991 uint64_t msr; 992 int error, type; 993 994 if (resource_disabled("est", 0)) 995 return (ENXIO); 996 997 /* 998 * If the ACPI perf driver has attached and is not just offering 999 * info, let it manage things. 1000 */ 1001 perf_dev = device_find_child(device_get_parent(dev), "acpi_perf", -1); 1002 if (perf_dev && device_is_attached(perf_dev)) { 1003 error = CPUFREQ_DRV_TYPE(perf_dev, &type); 1004 if (error == 0 && (type & CPUFREQ_FLAG_INFO_ONLY) == 0) 1005 return (ENXIO); 1006 } 1007 1008 /* Attempt to enable SpeedStep if not currently enabled. */ 1009 msr = rdmsr(MSR_MISC_ENABLE); 1010 if ((msr & MSR_SS_ENABLE) == 0) { 1011 wrmsr(MSR_MISC_ENABLE, msr | MSR_SS_ENABLE); 1012 if (bootverbose) 1013 device_printf(dev, "enabling SpeedStep\n"); 1014 1015 /* Check if the enable failed. */ 1016 msr = rdmsr(MSR_MISC_ENABLE); 1017 if ((msr & MSR_SS_ENABLE) == 0) { 1018 device_printf(dev, "failed to enable SpeedStep\n"); 1019 return (ENXIO); 1020 } 1021 } 1022 1023 device_set_desc(dev, "Enhanced SpeedStep Frequency Control"); 1024 return (0); 1025 } 1026 1027 static int 1028 est_attach(device_t dev) 1029 { 1030 struct est_softc *sc; 1031 1032 sc = device_get_softc(dev); 1033 sc->dev = dev; 1034 1035 /* On SMP system we can't guarantie independent freq setting. */ 1036 if (strict == -1 && mp_ncpus > 1) 1037 strict = 0; 1038 /* Check CPU for supported settings. */ 1039 if (est_get_info(dev)) 1040 return (ENXIO); 1041 1042 cpufreq_register(dev); 1043 return (0); 1044 } 1045 1046 static int 1047 est_detach(device_t dev) 1048 { 1049 struct est_softc *sc; 1050 int error; 1051 1052 error = cpufreq_unregister(dev); 1053 if (error) 1054 return (error); 1055 1056 sc = device_get_softc(dev); 1057 if (sc->acpi_settings || sc->msr_settings) 1058 free(sc->freq_list, M_DEVBUF); 1059 return (0); 1060 } 1061 1062 /* 1063 * Probe for supported CPU settings. First, check our static table of 1064 * settings. If no match, try using the ones offered by acpi_perf 1065 * (i.e., _PSS). We use ACPI second because some systems (IBM R/T40 1066 * series) export both legacy SMM IO-based access and direct MSR access 1067 * but the direct access specifies invalid values for _PSS. 1068 */ 1069 static int 1070 est_get_info(device_t dev) 1071 { 1072 struct est_softc *sc; 1073 uint64_t msr; 1074 int error; 1075 1076 sc = device_get_softc(dev); 1077 msr = rdmsr(MSR_PERF_STATUS); 1078 error = est_table_info(dev, msr, &sc->freq_list); 1079 if (error) 1080 error = est_acpi_info(dev, &sc->freq_list); 1081 if (error) 1082 error = est_msr_info(dev, msr, &sc->freq_list); 1083 1084 if (error) { 1085 printf( 1086 "est: CPU supports Enhanced Speedstep, but is not recognized.\n" 1087 "est: cpu_vendor %s, msr %0jx\n", cpu_vendor, msr); 1088 return (ENXIO); 1089 } 1090 1091 return (0); 1092 } 1093 1094 static int 1095 est_acpi_info(device_t dev, freq_info **freqs) 1096 { 1097 struct est_softc *sc; 1098 struct cf_setting *sets; 1099 freq_info *table; 1100 device_t perf_dev; 1101 int count, error, i, j; 1102 uint16_t saved_id16; 1103 1104 perf_dev = device_find_child(device_get_parent(dev), "acpi_perf", -1); 1105 if (perf_dev == NULL || !device_is_attached(perf_dev)) 1106 return (ENXIO); 1107 1108 /* Fetch settings from acpi_perf. */ 1109 sc = device_get_softc(dev); 1110 table = NULL; 1111 sets = malloc(MAX_SETTINGS * sizeof(*sets), M_TEMP, M_NOWAIT); 1112 if (sets == NULL) 1113 return (ENOMEM); 1114 count = MAX_SETTINGS; 1115 error = CPUFREQ_DRV_SETTINGS(perf_dev, sets, &count); 1116 if (error) 1117 goto out; 1118 1119 /* Parse settings into our local table format. */ 1120 table = malloc((count + 1) * sizeof(freq_info), M_DEVBUF, M_NOWAIT); 1121 if (table == NULL) { 1122 error = ENOMEM; 1123 goto out; 1124 } 1125 est_get_id16(&saved_id16); 1126 for (i = 0, j = 0; i < count; i++) { 1127 /* 1128 * Confirm id16 value is correct. 1129 */ 1130 if (sets[i].freq > 0) { 1131 error = est_set_id16(dev, sets[i].spec[0], strict); 1132 if (error != 0) { 1133 if (bootverbose) 1134 device_printf(dev, "Invalid freq %u, " 1135 "ignored.\n", sets[i].freq); 1136 continue; 1137 } 1138 table[j].freq = sets[i].freq; 1139 table[j].volts = sets[i].volts; 1140 table[j].id16 = sets[i].spec[0]; 1141 table[j].power = sets[i].power; 1142 ++j; 1143 } 1144 } 1145 /* restore saved setting */ 1146 est_set_id16(dev, saved_id16, 0); 1147 1148 /* Mark end of table with a terminator. */ 1149 bzero(&table[j], sizeof(freq_info)); 1150 1151 sc->acpi_settings = TRUE; 1152 *freqs = table; 1153 error = 0; 1154 1155 out: 1156 if (sets) 1157 free(sets, M_TEMP); 1158 if (error && table) 1159 free(table, M_DEVBUF); 1160 return (error); 1161 } 1162 1163 static int 1164 est_table_info(device_t dev, uint64_t msr, freq_info **freqs) 1165 { 1166 cpu_info *p; 1167 uint32_t id; 1168 1169 /* Find a table which matches (vendor, id32). */ 1170 id = msr >> 32; 1171 for (p = ESTprocs; p->id32 != 0; p++) { 1172 if (p->vendor_id == cpu_vendor_id && p->id32 == id) 1173 break; 1174 } 1175 if (p->id32 == 0) 1176 return (EOPNOTSUPP); 1177 1178 /* Make sure the current setpoint is valid. */ 1179 if (est_get_current(p->freqtab) == NULL) { 1180 device_printf(dev, "current setting not found in table\n"); 1181 return (EOPNOTSUPP); 1182 } 1183 1184 *freqs = p->freqtab; 1185 return (0); 1186 } 1187 1188 static int 1189 bus_speed_ok(int bus) 1190 { 1191 1192 switch (bus) { 1193 case 100: 1194 case 133: 1195 case 333: 1196 return (1); 1197 default: 1198 return (0); 1199 } 1200 } 1201 1202 /* 1203 * Flesh out a simple rate table containing the high and low frequencies 1204 * based on the current clock speed and the upper 32 bits of the MSR. 1205 */ 1206 static int 1207 est_msr_info(device_t dev, uint64_t msr, freq_info **freqs) 1208 { 1209 struct est_softc *sc; 1210 freq_info *fp; 1211 int bus, freq, volts; 1212 uint16_t id; 1213 1214 if (!msr_info_enabled) 1215 return (EOPNOTSUPP); 1216 1217 /* Figure out the bus clock. */ 1218 freq = tsc_freq / 1000000; 1219 id = msr >> 32; 1220 bus = freq / (id >> 8); 1221 device_printf(dev, "Guessed bus clock (high) of %d MHz\n", bus); 1222 if (!bus_speed_ok(bus)) { 1223 /* We may be running on the low frequency. */ 1224 id = msr >> 48; 1225 bus = freq / (id >> 8); 1226 device_printf(dev, "Guessed bus clock (low) of %d MHz\n", bus); 1227 if (!bus_speed_ok(bus)) 1228 return (EOPNOTSUPP); 1229 1230 /* Calculate high frequency. */ 1231 id = msr >> 32; 1232 freq = ((id >> 8) & 0xff) * bus; 1233 } 1234 1235 /* Fill out a new freq table containing just the high and low freqs. */ 1236 sc = device_get_softc(dev); 1237 fp = malloc(sizeof(freq_info) * 3, M_DEVBUF, M_WAITOK | M_ZERO); 1238 1239 /* First, the high frequency. */ 1240 volts = id & 0xff; 1241 if (volts != 0) { 1242 volts <<= 4; 1243 volts += 700; 1244 } 1245 fp[0].freq = freq; 1246 fp[0].volts = volts; 1247 fp[0].id16 = id; 1248 fp[0].power = CPUFREQ_VAL_UNKNOWN; 1249 device_printf(dev, "Guessed high setting of %d MHz @ %d Mv\n", freq, 1250 volts); 1251 1252 /* Second, the low frequency. */ 1253 id = msr >> 48; 1254 freq = ((id >> 8) & 0xff) * bus; 1255 volts = id & 0xff; 1256 if (volts != 0) { 1257 volts <<= 4; 1258 volts += 700; 1259 } 1260 fp[1].freq = freq; 1261 fp[1].volts = volts; 1262 fp[1].id16 = id; 1263 fp[1].power = CPUFREQ_VAL_UNKNOWN; 1264 device_printf(dev, "Guessed low setting of %d MHz @ %d Mv\n", freq, 1265 volts); 1266 1267 /* Table is already terminated due to M_ZERO. */ 1268 sc->msr_settings = TRUE; 1269 *freqs = fp; 1270 return (0); 1271 } 1272 1273 static void 1274 est_get_id16(uint16_t *id16_p) 1275 { 1276 *id16_p = rdmsr(MSR_PERF_STATUS) & 0xffff; 1277 } 1278 1279 static int 1280 est_set_id16(device_t dev, uint16_t id16, int need_check) 1281 { 1282 uint64_t msr; 1283 uint16_t new_id16; 1284 int ret = 0; 1285 1286 /* Read the current register, mask out the old, set the new id. */ 1287 msr = rdmsr(MSR_PERF_CTL); 1288 msr = (msr & ~0xffff) | id16; 1289 wrmsr(MSR_PERF_CTL, msr); 1290 1291 /* Wait a short while for the new setting. XXX Is this necessary? */ 1292 DELAY(EST_TRANS_LAT); 1293 1294 if (need_check) { 1295 est_get_id16(&new_id16); 1296 if (new_id16 != id16) { 1297 if (bootverbose) 1298 device_printf(dev, "Invalid id16 (set, cur) " 1299 "= (%u, %u)\n", id16, new_id16); 1300 ret = ENXIO; 1301 } 1302 } 1303 return (ret); 1304 } 1305 1306 static freq_info * 1307 est_get_current(freq_info *freq_list) 1308 { 1309 freq_info *f; 1310 int i; 1311 uint16_t id16; 1312 1313 /* 1314 * Try a few times to get a valid value. Sometimes, if the CPU 1315 * is in the middle of an asynchronous transition (i.e., P4TCC), 1316 * we get a temporary invalid result. 1317 */ 1318 for (i = 0; i < 5; i++) { 1319 est_get_id16(&id16); 1320 for (f = freq_list; f->id16 != 0; f++) { 1321 if (f->id16 == id16) 1322 return (f); 1323 } 1324 DELAY(100); 1325 } 1326 return (NULL); 1327 } 1328 1329 static int 1330 est_settings(device_t dev, struct cf_setting *sets, int *count) 1331 { 1332 struct est_softc *sc; 1333 freq_info *f; 1334 int i; 1335 1336 sc = device_get_softc(dev); 1337 if (*count < EST_MAX_SETTINGS) 1338 return (E2BIG); 1339 1340 i = 0; 1341 for (f = sc->freq_list; f->freq != 0; f++, i++) { 1342 sets[i].freq = f->freq; 1343 sets[i].volts = f->volts; 1344 sets[i].power = f->power; 1345 sets[i].lat = EST_TRANS_LAT; 1346 sets[i].dev = dev; 1347 } 1348 *count = i; 1349 1350 return (0); 1351 } 1352 1353 static int 1354 est_set(device_t dev, const struct cf_setting *set) 1355 { 1356 struct est_softc *sc; 1357 freq_info *f; 1358 1359 /* Find the setting matching the requested one. */ 1360 sc = device_get_softc(dev); 1361 for (f = sc->freq_list; f->freq != 0; f++) { 1362 if (f->freq == set->freq) 1363 break; 1364 } 1365 if (f->freq == 0) 1366 return (EINVAL); 1367 1368 /* Read the current register, mask out the old, set the new id. */ 1369 est_set_id16(dev, f->id16, 0); 1370 1371 return (0); 1372 } 1373 1374 static int 1375 est_get(device_t dev, struct cf_setting *set) 1376 { 1377 struct est_softc *sc; 1378 freq_info *f; 1379 1380 sc = device_get_softc(dev); 1381 f = est_get_current(sc->freq_list); 1382 if (f == NULL) 1383 return (ENXIO); 1384 1385 set->freq = f->freq; 1386 set->volts = f->volts; 1387 set->power = f->power; 1388 set->lat = EST_TRANS_LAT; 1389 set->dev = dev; 1390 return (0); 1391 } 1392 1393 static int 1394 est_type(device_t dev, int *type) 1395 { 1396 1397 if (type == NULL) 1398 return (EINVAL); 1399 1400 *type = CPUFREQ_TYPE_ABSOLUTE; 1401 return (0); 1402 } 1403