drivers/gpu/drm/nouveau/nvkm/subdev/bios/boost.c

   1 /*
   2  * Copyright 2013 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 #include <subdev/bios.h>
  25 #include <subdev/bios/bit.h>
  26 #include <subdev/bios/boost.h>
  27
  28 u16
  29 nvbios_boostTe(struct nvkm_bios *bios,
  30                u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *snr, u8 *ssz)
  31 {
  32         struct bit_entry bit_P;
  33         u16 boost = 0x0000;
  34
  35         if (!bit_entry(bios, 'P', &bit_P)) {
  36                 if (bit_P.version == 2)
  37                         boost = nv_ro16(bios, bit_P.offset + 0x30);
  38
  39                 if (boost) {
  40                         *ver = nv_ro08(bios, boost + 0);
  41                         switch (*ver) {
  42                         case 0x11:
  43                                 *hdr = nv_ro08(bios, boost + 1);
  44                                 *cnt = nv_ro08(bios, boost + 5);
  45                                 *len = nv_ro08(bios, boost + 2);
  46                                 *snr = nv_ro08(bios, boost + 4);
  47                                 *ssz = nv_ro08(bios, boost + 3);
  48                                 return boost;
  49                         default:
  50                                 break;
  51                         }
  52                 }
  53         }
  54
  55         return 0x0000;
  56 }
  57
  58 u16
  59 nvbios_boostEe(struct nvkm_bios *bios, int idx,
  60                u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
  61 {
  62         u8  snr, ssz;
  63         u16 data = nvbios_boostTe(bios, ver, hdr, cnt, len, &snr, &ssz);
  64         if (data && idx < *cnt) {
  65                 data = data + *hdr + (idx * (*len + (snr * ssz)));
  66                 *hdr = *len;
  67                 *cnt = snr;
  68                 *len = ssz;
  69                 return data;
  70         }
  71         return 0x0000;
  72 }
  73
  74 u16
  75 nvbios_boostEp(struct nvkm_bios *bios, int idx,
  76                u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_boostE *info)
  77 {
  78         u16 data = nvbios_boostEe(bios, idx, ver, hdr, cnt, len);
  79         memset(info, 0x00, sizeof(*info));
  80         if (data) {
  81                 info->pstate = (nv_ro16(bios, data + 0x00) & 0x01e0) >> 5;
  82                 info->min    =  nv_ro16(bios, data + 0x02) * 1000;
  83                 info->max    =  nv_ro16(bios, data + 0x04) * 1000;
  84         }
  85         return data;
  86 }
  87
  88 u16
  89 nvbios_boostEm(struct nvkm_bios *bios, u8 pstate,
  90                u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_boostE *info)
  91 {
  92         u32 data, idx = 0;
  93         while ((data = nvbios_boostEp(bios, idx++, ver, hdr, cnt, len, info))) {
  94                 if (info->pstate == pstate)
  95                         break;
  96         }
  97         return data;
  98 }
  99
 100 u16
 101 nvbios_boostSe(struct nvkm_bios *bios, int idx,
 102                u16 data, u8 *ver, u8 *hdr, u8 cnt, u8 len)
 103 {
 104         if (data && idx < cnt) {
 105                 data = data + *hdr + (idx * len);
 106                 *hdr = len;
 107                 return data;
 108         }
 109         return 0x0000;
 110 }
 111
 112 u16
 113 nvbios_boostSp(struct nvkm_bios *bios, int idx,
 114                u16 data, u8 *ver, u8 *hdr, u8 cnt, u8 len,
 115                struct nvbios_boostS *info)
 116 {
 117         data = nvbios_boostSe(bios, idx, data, ver, hdr, cnt, len);
 118         memset(info, 0x00, sizeof(*info));
 119         if (data) {
 120                 info->domain  = nv_ro08(bios, data + 0x00);
 121                 info->percent = nv_ro08(bios, data + 0x01);
 122                 info->min     = nv_ro16(bios, data + 0x02) * 1000;
 123                 info->max     = nv_ro16(bios, data + 0x04) * 1000;
 124         }
 125         return data;
 126 }