drivers/gpu/drm/nouveau/nouveau_perf.c

   1 /*
   2  * Copyright 2010 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs
  23  */
  24
  25 #include <drm/drmP.h>
  26
  27 #include "nouveau_drm.h"
  28 #include "nouveau_reg.h"
  29 #include "nouveau_pm.h"
  30
  31 static u8 *
  32 nouveau_perf_table(struct drm_device *dev, u8 *ver)
  33 {
  34         struct nouveau_drm *drm = nouveau_drm(dev);
  35         struct nvbios *bios = &drm->vbios;
  36         struct bit_entry P;
  37
  38         if (!bit_table(dev, 'P', &P) && P.version && P.version <= 2) {
  39                 u8 *perf = ROMPTR(dev, P.data[0]);
  40                 if (perf) {
  41                         *ver = perf[0];
  42                         return perf;
  43                 }
  44         }
  45
  46         if (bios->type == NVBIOS_BMP) {
  47                 if (bios->data[bios->offset + 6] >= 0x25) {
  48                         u8 *perf = ROMPTR(dev, bios->data[bios->offset + 0x94]);
  49                         if (perf) {
  50                                 *ver = perf[1];
  51                                 return perf;
  52                         }
  53                 }
  54         }
  55
  56         return NULL;
  57 }
  58
  59 static u8 *
  60 nouveau_perf_entry(struct drm_device *dev, int idx,
  61                    u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
  62 {
  63         u8 *perf = nouveau_perf_table(dev, ver);
  64         if (perf) {
  65                 if (*ver >= 0x12 && *ver < 0x20 && idx < perf[2]) {
  66                         *hdr = perf[3];
  67                         *cnt = 0;
  68                         *len = 0;
  69                         return perf + perf[0] + idx * perf[3];
  70                 } else
  71                 if (*ver >= 0x20 && *ver < 0x40 && idx < perf[2]) {
  72                         *hdr = perf[3];
  73                         *cnt = perf[4];
  74                         *len = perf[5];
  75                         return perf + perf[1] + idx * (*hdr + (*cnt * *len));
  76                 } else
  77                 if (*ver >= 0x40 && *ver < 0x41 && idx < perf[5]) {
  78                         *hdr = perf[2];
  79                         *cnt = perf[4];
  80                         *len = perf[3];
  81                         return perf + perf[1] + idx * (*hdr + (*cnt * *len));
  82                 }
  83         }
  84         return NULL;
  85 }
  86
  87 u8 *
  88 nouveau_perf_rammap(struct drm_device *dev, u32 freq,
  89                     u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
  90 {
  91         struct nouveau_drm *drm = nouveau_drm(dev);
  92         struct bit_entry P;
  93         u8 *perf, i = 0;
  94
  95         if (!bit_table(dev, 'P', &P) && P.version == 2) {
  96                 u8 *rammap = ROMPTR(dev, P.data[4]);
  97                 if (rammap) {
  98                         u8 *ramcfg = rammap + rammap[1];
  99
 100                         *ver = rammap[0];
 101                         *hdr = rammap[2];
 102                         *cnt = rammap[4];
 103                         *len = rammap[3];
 104
 105                         freq /= 1000;
 106                         for (i = 0; i < rammap[5]; i++) {
 107                                 if (freq >= ROM16(ramcfg[0]) &&
 108                                     freq <= ROM16(ramcfg[2]))
 109                                         return ramcfg;
 110
 111                                 ramcfg += *hdr + (*cnt * *len);
 112                         }
 113                 }
 114
 115                 return NULL;
 116         }
 117
 118         if (nv_device(drm->device)->chipset == 0x49 ||
 119             nv_device(drm->device)->chipset == 0x4b)
 120                 freq /= 2;
 121
 122         while ((perf = nouveau_perf_entry(dev, i++, ver, hdr, cnt, len))) {
 123                 if (*ver >= 0x20 && *ver < 0x25) {
 124                         if (perf[0] != 0xff && freq <= ROM16(perf[11]) * 1000)
 125                                 break;
 126                 } else
 127                 if (*ver >= 0x25 && *ver < 0x40) {
 128                         if (perf[0] != 0xff && freq <= ROM16(perf[12]) * 1000)
 129                                 break;
 130                 }
 131         }
 132
 133         if (perf) {
 134                 u8 *ramcfg = perf + *hdr;
 135                 *ver = 0x00;
 136                 *hdr = 0;
 137                 return ramcfg;
 138         }
 139
 140         return NULL;
 141 }
 142
 143 u8 *
 144 nouveau_perf_ramcfg(struct drm_device *dev, u32 freq, u8 *ver, u8 *len)
 145 {
 146         struct nouveau_device *device = nouveau_dev(dev);
 147         struct nouveau_drm *drm = nouveau_drm(dev);
 148         struct nvbios *bios = &drm->vbios;
 149         u8 strap, hdr, cnt;
 150         u8 *rammap;
 151
 152         strap = (nv_rd32(device, 0x101000) & 0x0000003c) >> 2;
 153         if (bios->ram_restrict_tbl_ptr)
 154                 strap = bios->data[bios->ram_restrict_tbl_ptr + strap];
 155
 156         rammap = nouveau_perf_rammap(dev, freq, ver, &hdr, &cnt, len);
 157         if (rammap && strap < cnt)
 158                 return rammap + hdr + (strap * *len);
 159
 160         return NULL;
 161 }
 162
 163 u8 *
 164 nouveau_perf_timing(struct drm_device *dev, u32 freq, u8 *ver, u8 *len)
 165 {
 166         struct nouveau_drm *drm = nouveau_drm(dev);
 167         struct nvbios *bios = &drm->vbios;
 168         struct bit_entry P;
 169         u8 *perf, *timing = NULL;
 170         u8 i = 0, hdr, cnt;
 171
 172         if (bios->type == NVBIOS_BMP) {
 173                 while ((perf = nouveau_perf_entry(dev, i++, ver, &hdr, &cnt,
 174                                                   len)) && *ver == 0x15) {
 175                         if (freq <= ROM32(perf[5]) * 20) {
 176                                 *ver = 0x00;
 177                                 *len = 14;
 178                                 return perf + 41;
 179                         }
 180                 }
 181                 return NULL;
 182         }
 183
 184         if (!bit_table(dev, 'P', &P)) {
 185                 if (P.version == 1)
 186                         timing = ROMPTR(dev, P.data[4]);
 187                 else
 188                 if (P.version == 2)
 189                         timing = ROMPTR(dev, P.data[8]);
 190         }
 191
 192         if (timing && timing[0] == 0x10) {
 193                 u8 *ramcfg = nouveau_perf_ramcfg(dev, freq, ver, len);
 194                 if (ramcfg && ramcfg[1] < timing[2]) {
 195                         *ver = timing[0];
 196                         *len = timing[3];
 197                         return timing + timing[1] + (ramcfg[1] * timing[3]);
 198                 }
 199         }
 200
 201         return NULL;
 202 }
 203
 204 static void
 205 legacy_perf_init(struct drm_device *dev)
 206 {
 207         struct nouveau_device *device = nouveau_dev(dev);
 208         struct nouveau_drm *drm = nouveau_drm(dev);
 209         struct nvbios *bios = &drm->vbios;
 210         struct nouveau_pm *pm = nouveau_pm(dev);
 211         char *perf, *entry, *bmp = &bios->data[bios->offset];
 212         int headerlen, use_straps;
 213
 214         if (bmp[5] < 0x5 || bmp[6] < 0x14) {
 215                 NV_DEBUG(drm, "BMP version too old for perf\n");
 216                 return;
 217         }
 218
 219         perf = ROMPTR(dev, bmp[0x73]);
 220         if (!perf) {
 221                 NV_DEBUG(drm, "No memclock table pointer found.\n");
 222                 return;
 223         }
 224
 225         switch (perf[0]) {
 226         case 0x12:
 227         case 0x14:
 228         case 0x18:
 229                 use_straps = 0;
 230                 headerlen = 1;
 231                 break;
 232         case 0x01:
 233                 use_straps = perf[1] & 1;
 234                 headerlen = (use_straps ? 8 : 2);
 235                 break;
 236         default:
 237                 NV_WARN(drm, "Unknown memclock table version %x.\n", perf[0]);
 238                 return;
 239         }
 240
 241         entry = perf + headerlen;
 242         if (use_straps)
 243                 entry += (nv_rd32(device, NV_PEXTDEV_BOOT_0) & 0x3c) >> 1;
 244
 245         sprintf(pm->perflvl[0].name, "performance_level_0");
 246         pm->perflvl[0].memory = ROM16(entry[0]) * 20;
 247         pm->nr_perflvl = 1;
 248 }
 249
 250 static void
 251 nouveau_perf_voltage(struct drm_device *dev, struct nouveau_pm_level *perflvl)
 252 {
 253         struct nouveau_drm *drm = nouveau_drm(dev);
 254         struct bit_entry P;
 255         u8 *vmap;
 256         int id;
 257
 258         id = perflvl->volt_min;
 259         perflvl->volt_min = 0;
 260
 261         /* boards using voltage table version <0x40 store the voltage
 262          * level directly in the perflvl entry as a multiple of 10mV
 263          */
 264         if (drm->pm->voltage.version < 0x40) {
 265                 perflvl->volt_min = id * 10000;
 266                 perflvl->volt_max = perflvl->volt_min;
 267                 return;
 268         }
 269
 270         /* on newer ones, the perflvl stores an index into yet another
 271          * vbios table containing a min/max voltage value for the perflvl
 272          */
 273         if (bit_table(dev, 'P', &P) || P.version != 2 || P.length < 34) {
 274                 NV_DEBUG(drm, "where's our volt map table ptr? %d %d\n",
 275                          P.version, P.length);
 276                 return;
 277         }
 278
 279         vmap = ROMPTR(dev, P.data[32]);
 280         if (!vmap) {
 281                 NV_DEBUG(drm, "volt map table pointer invalid\n");
 282                 return;
 283         }
 284
 285         if (id < vmap[3]) {
 286                 vmap += vmap[1] + (vmap[2] * id);
 287                 perflvl->volt_min = ROM32(vmap[0]);
 288                 perflvl->volt_max = ROM32(vmap[4]);
 289         }
 290 }
 291
 292 void
 293 nouveau_perf_init(struct drm_device *dev)
 294 {
 295         struct nouveau_drm *drm = nouveau_drm(dev);
 296         struct nouveau_pm *pm = nouveau_pm(dev);
 297         struct nvbios *bios = &drm->vbios;
 298         u8 *perf, ver, hdr, cnt, len;
 299         int ret, vid, i = -1;
 300
 301         if (bios->type == NVBIOS_BMP && bios->data[bios->offset + 6] < 0x25) {
 302                 legacy_perf_init(dev);
 303                 return;
 304         }
 305
 306         perf = nouveau_perf_table(dev, &ver);
 307
 308         while ((perf = nouveau_perf_entry(dev, ++i, &ver, &hdr, &cnt, &len))) {
 309                 struct nouveau_pm_level *perflvl = &pm->perflvl[pm->nr_perflvl];
 310
 311                 if (perf[0] == 0xff)
 312                         continue;
 313
 314                 switch (ver) {
 315                 case 0x12:
 316                 case 0x13:
 317                 case 0x15:
 318                         perflvl->fanspeed = perf[55];
 319                         if (hdr > 56)
 320                                 perflvl->volt_min = perf[56];
 321                         perflvl->core = ROM32(perf[1]) * 10;
 322                         perflvl->memory = ROM32(perf[5]) * 20;
 323                         break;
 324                 case 0x21:
 325                 case 0x23:
 326                 case 0x24:
 327                         perflvl->fanspeed = perf[4];
 328                         perflvl->volt_min = perf[5];
 329                         perflvl->shader = ROM16(perf[6]) * 1000;
 330                         perflvl->core = perflvl->shader;
 331                         perflvl->core += (signed char)perf[8] * 1000;
 332                         if (nv_device(drm->device)->chipset == 0x49 ||
 333                             nv_device(drm->device)->chipset == 0x4b)
 334                                 perflvl->memory = ROM16(perf[11]) * 1000;
 335                         else
 336                                 perflvl->memory = ROM16(perf[11]) * 2000;
 337                         break;
 338                 case 0x25:
 339                         perflvl->fanspeed = perf[4];
 340                         perflvl->volt_min = perf[5];
 341                         perflvl->core = ROM16(perf[6]) * 1000;
 342                         perflvl->shader = ROM16(perf[10]) * 1000;
 343                         perflvl->memory = ROM16(perf[12]) * 1000;
 344                         break;
 345                 case 0x30:
 346                         perflvl->memscript = ROM16(perf[2]);
 347                 case 0x35:
 348                         perflvl->fanspeed = perf[6];
 349                         perflvl->volt_min = perf[7];
 350                         perflvl->core = ROM16(perf[8]) * 1000;
 351                         perflvl->shader = ROM16(perf[10]) * 1000;
 352                         perflvl->memory = ROM16(perf[12]) * 1000;
 353                         perflvl->vdec = ROM16(perf[16]) * 1000;
 354                         perflvl->dom6 = ROM16(perf[20]) * 1000;
 355                         break;
 356                 case 0x40:
 357 #define subent(n) ((ROM16(perf[hdr + (n) * len]) & 0xfff) * 1000)
 358                         perflvl->fanspeed = 0; /*XXX*/
 359                         perflvl->volt_min = perf[2];
 360                         if (nv_device(drm->device)->card_type == NV_50) {
 361                                 perflvl->core   = subent(0);
 362                                 perflvl->shader = subent(1);
 363                                 perflvl->memory = subent(2);
 364                                 perflvl->vdec   = subent(3);
 365                                 perflvl->unka0  = subent(4);
 366                         } else {
 367                                 perflvl->hub06  = subent(0);
 368                                 perflvl->hub01  = subent(1);
 369                                 perflvl->copy   = subent(2);
 370                                 perflvl->shader = subent(3);
 371                                 perflvl->rop    = subent(4);
 372                                 perflvl->memory = subent(5);
 373                                 perflvl->vdec   = subent(6);
 374                                 perflvl->daemon = subent(10);
 375                                 perflvl->hub07  = subent(11);
 376                                 perflvl->core   = perflvl->shader / 2;
 377                         }
 378                         break;
 379                 }
 380
 381                 /* make sure vid is valid */
 382                 nouveau_perf_voltage(dev, perflvl);
 383                 if (pm->voltage.supported && perflvl->volt_min) {
 384                         vid = nouveau_volt_vid_lookup(dev, perflvl->volt_min);
 385                         if (vid < 0) {
 386                                 NV_DEBUG(drm, "perflvl %d, bad vid\n", i);
 387                                 continue;
 388                         }
 389                 }
 390
 391                 /* get the corresponding memory timings */
 392                 ret = nouveau_mem_timing_calc(dev, perflvl->memory,
 393                                                   &perflvl->timing);
 394                 if (ret) {
 395                         NV_DEBUG(drm, "perflvl %d, bad timing: %d\n", i, ret);
 396                         continue;
 397                 }
 398
 399                 snprintf(perflvl->name, sizeof(perflvl->name),
 400                          "performance_level_%d", i);
 401                 perflvl->id = i;
 402
 403                 snprintf(perflvl->profile.name, sizeof(perflvl->profile.name),
 404                          "%d", perflvl->id);
 405                 perflvl->profile.func = &nouveau_pm_static_profile_func;
 406                 list_add_tail(&perflvl->profile.head, &pm->profiles);
 407
 408
 409                 pm->nr_perflvl++;
 410         }
 411 }
 412
 413 void
 414 nouveau_perf_fini(struct drm_device *dev)
 415 {
 416 }