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 "drmP.h"
  26
  27 #include "nouveau_drv.h"
  28 #include "nouveau_pm.h"
  29
  30 static void
  31 legacy_perf_init(struct drm_device *dev)
  32 {
  33         struct drm_nouveau_private *dev_priv = dev->dev_private;
  34         struct nvbios *bios = &dev_priv->vbios;
  35         struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
  36         char *perf, *entry, *bmp = &bios->data[bios->offset];
  37         int headerlen, use_straps;
  38
  39         if (bmp[5] < 0x5 || bmp[6] < 0x14) {
  40                 NV_DEBUG(dev, "BMP version too old for perf\n");
  41                 return;
  42         }
  43
  44         perf = ROMPTR(bios, bmp[0x73]);
  45         if (!perf) {
  46                 NV_DEBUG(dev, "No memclock table pointer found.\n");
  47                 return;
  48         }
  49
  50         switch (perf[0]) {
  51         case 0x12:
  52         case 0x14:
  53         case 0x18:
  54                 use_straps = 0;
  55                 headerlen = 1;
  56                 break;
  57         case 0x01:
  58                 use_straps = perf[1] & 1;
  59                 headerlen = (use_straps ? 8 : 2);
  60                 break;
  61         default:
  62                 NV_WARN(dev, "Unknown memclock table version %x.\n", perf[0]);
  63                 return;
  64         }
  65
  66         entry = perf + headerlen;
  67         if (use_straps)
  68                 entry += (nv_rd32(dev, NV_PEXTDEV_BOOT_0) & 0x3c) >> 1;
  69
  70         sprintf(pm->perflvl[0].name, "performance_level_0");
  71         pm->perflvl[0].memory = ROM16(entry[0]) * 20;
  72         pm->nr_perflvl = 1;
  73 }
  74
  75 void
  76 nouveau_perf_init(struct drm_device *dev)
  77 {
  78         struct drm_nouveau_private *dev_priv = dev->dev_private;
  79         struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
  80         struct nvbios *bios = &dev_priv->vbios;
  81         struct bit_entry P;
  82         u8 version, headerlen, recordlen, entries;
  83         u8 *perf, *entry;
  84         int vid, i;
  85
  86         if (bios->type == NVBIOS_BIT) {
  87                 if (bit_table(dev, 'P', &P))
  88                         return;
  89
  90                 if (P.version != 1 && P.version != 2) {
  91                         NV_WARN(dev, "unknown perf for BIT P %d\n", P.version);
  92                         return;
  93                 }
  94
  95                 perf = ROMPTR(bios, P.data[0]);
  96                 version   = perf[0];
  97                 headerlen = perf[1];
  98                 if (version < 0x40) {
  99                         recordlen = perf[3] + (perf[4] * perf[5]);
 100                         entries   = perf[2];
 101                 } else {
 102                         recordlen = perf[2] + (perf[3] * perf[4]);
 103                         entries   = perf[5];
 104                 }
 105         } else {
 106                 if (bios->data[bios->offset + 6] < 0x25) {
 107                         legacy_perf_init(dev);
 108                         return;
 109                 }
 110
 111                 perf = ROMPTR(bios, bios->data[bios->offset + 0x94]);
 112                 if (!perf) {
 113                         NV_DEBUG(dev, "perf table pointer invalid\n");
 114                         return;
 115                 }
 116
 117                 version   = perf[1];
 118                 headerlen = perf[0];
 119                 recordlen = perf[3];
 120                 entries   = perf[2];
 121         }
 122
 123         entry = perf + headerlen;
 124         for (i = 0; i < entries; i++) {
 125                 struct nouveau_pm_level *perflvl = &pm->perflvl[pm->nr_perflvl];
 126
 127                 if (entry[0] == 0xff) {
 128                         entry += recordlen;
 129                         continue;
 130                 }
 131
 132                 switch (version) {
 133                 case 0x12:
 134                 case 0x13:
 135                 case 0x15:
 136                         perflvl->fanspeed = entry[55];
 137                         perflvl->voltage = (recordlen > 56) ? entry[56] : 0;
 138                         perflvl->core = ROM32(entry[1]) * 10;
 139                         perflvl->memory = ROM32(entry[5]) * 20;
 140                         break;
 141                 case 0x21:
 142                 case 0x23:
 143                 case 0x24:
 144                         perflvl->fanspeed = entry[4];
 145                         perflvl->voltage = entry[5];
 146                         perflvl->core = ROM16(entry[6]) * 1000;
 147
 148                         if (dev_priv->chipset == 0x49 ||
 149                             dev_priv->chipset == 0x4b)
 150                                 perflvl->memory = ROM16(entry[11]) * 1000;
 151                         else
 152                                 perflvl->memory = ROM16(entry[11]) * 2000;
 153
 154                         break;
 155                 case 0x25:
 156                         perflvl->fanspeed = entry[4];
 157                         perflvl->voltage = entry[5];
 158                         perflvl->core = ROM16(entry[6]) * 1000;
 159                         perflvl->shader = ROM16(entry[10]) * 1000;
 160                         perflvl->memory = ROM16(entry[12]) * 1000;
 161                         break;
 162                 case 0x30:
 163                         perflvl->memscript = ROM16(entry[2]);
 164                 case 0x35:
 165                         perflvl->fanspeed = entry[6];
 166                         perflvl->voltage = entry[7];
 167                         perflvl->core = ROM16(entry[8]) * 1000;
 168                         perflvl->shader = ROM16(entry[10]) * 1000;
 169                         perflvl->memory = ROM16(entry[12]) * 1000;
 170                         /*XXX: confirm on 0x35 */
 171                         perflvl->unk05 = ROM16(entry[16]) * 1000;
 172                         break;
 173                 case 0x40:
 174 #define subent(n) entry[perf[2] + ((n) * perf[3])]
 175                         perflvl->fanspeed = 0; /*XXX*/
 176                         perflvl->voltage = entry[2];
 177                         perflvl->core = (ROM16(subent(0)) & 0xfff) * 1000;
 178                         perflvl->shader = (ROM16(subent(1)) & 0xfff) * 1000;
 179                         perflvl->memory = (ROM16(subent(2)) & 0xfff) * 1000;
 180                         break;
 181                 }
 182
 183                 /* make sure vid is valid */
 184                 if (pm->voltage.supported && perflvl->voltage) {
 185                         vid = nouveau_volt_vid_lookup(dev, perflvl->voltage);
 186                         if (vid < 0) {
 187                                 NV_DEBUG(dev, "drop perflvl %d, bad vid\n", i);
 188                                 entry += recordlen;
 189                                 continue;
 190                         }
 191                 }
 192
 193                 snprintf(perflvl->name, sizeof(perflvl->name),
 194                          "performance_level_%d", i);
 195                 perflvl->id = i;
 196                 pm->nr_perflvl++;
 197
 198                 entry += recordlen;
 199         }
 200 }
 201
 202 void
 203 nouveau_perf_fini(struct drm_device *dev)
 204 {
 205 }