LXR linux/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
  28u32
  29nvbios_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        u32 boost = 0;
  34
  35        if (!bit_entry(bios, 'P', &bit_P)) {
  36                if (bit_P.version == 2 && bit_P.length >= 0x34)
  37                        boost = nvbios_rd32(bios, bit_P.offset + 0x30);
  38
  39                if (boost) {
  40                        *ver = nvbios_rd08(bios, boost + 0);
  41                        switch (*ver) {
  42                        case 0x11:
  43                                *hdr = nvbios_rd08(bios, boost + 1);
  44                                *cnt = nvbios_rd08(bios, boost + 5);
  45                                *len = nvbios_rd08(bios, boost + 2);
  46                                *snr = nvbios_rd08(bios, boost + 4);
  47                                *ssz = nvbios_rd08(bios, boost + 3);
  48                                return boost;
  49                        default:
  50                                break;
  51                        }
  52                }
  53        }
  54
  55        return 0;
  56}
  57
  58u32
  59nvbios_boostEe(struct nvkm_bios *bios, int idx,
  60               u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
  61{
  62        u8  snr, ssz;
  63        u32 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 0;
  72}
  73
  74u32
  75nvbios_boostEp(struct nvkm_bios *bios, int idx,
  76               u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_boostE *info)
  77{
  78        u32 data = nvbios_boostEe(bios, idx, ver, hdr, cnt, len);
  79        memset(info, 0x00, sizeof(*info));
  80        if (data) {
  81                info->pstate = (nvbios_rd16(bios, data + 0x00) & 0x01e0) >> 5;
  82                info->min    =  nvbios_rd16(bios, data + 0x02) * 1000;
  83                info->max    =  nvbios_rd16(bios, data + 0x04) * 1000;
  84        }
  85        return data;
  86}
  87
  88u32
  89nvbios_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
 100u32
 101nvbios_boostSe(struct nvkm_bios *bios, int idx,
 102               u32 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 0;
 110}
 111
 112u32
 113nvbios_boostSp(struct nvkm_bios *bios, int idx,
 114               u32 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  = nvbios_rd08(bios, data + 0x00);
 121                info->percent = nvbios_rd08(bios, data + 0x01);
 122                info->min     = nvbios_rd16(bios, data + 0x02) * 1000;
 123                info->max     = nvbios_rd16(bios, data + 0x04) * 1000;
 124        }
 125        return data;
 126}
 127