LXR linux/drivers/gpu/drm/nouveau/core/subdev/bios/rammap.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
  25#include <subdev/bios.h>
  26#include <subdev/bios/bit.h>
  27#include <subdev/bios/ramcfg.h>
  28#include <subdev/bios/rammap.h>
  29
  30u32
  31nvbios_rammapTe(struct nouveau_bios *bios, u8 *ver, u8 *hdr,
  32                u8 *cnt, u8 *len, u8 *snr, u8 *ssz)
  33{
  34        struct bit_entry bit_P;
  35        u16 rammap = 0x0000;
  36
  37        if (!bit_entry(bios, 'P', &bit_P)) {
  38                if (bit_P.version == 2)
  39                        rammap = nv_ro16(bios, bit_P.offset + 4);
  40
  41                if (rammap) {
  42                        *ver = nv_ro08(bios, rammap + 0);
  43                        switch (*ver) {
  44                        case 0x10:
  45                        case 0x11:
  46                                *hdr = nv_ro08(bios, rammap + 1);
  47                                *cnt = nv_ro08(bios, rammap + 5);
  48                                *len = nv_ro08(bios, rammap + 2);
  49                                *snr = nv_ro08(bios, rammap + 4);
  50                                *ssz = nv_ro08(bios, rammap + 3);
  51                                return rammap;
  52                        default:
  53                                break;
  54                        }
  55                }
  56        }
  57
  58        return 0x0000;
  59}
  60
  61u32
  62nvbios_rammapEe(struct nouveau_bios *bios, int idx,
  63                u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
  64{
  65        u8  snr, ssz;
  66        u16 rammap = nvbios_rammapTe(bios, ver, hdr, cnt, len, &snr, &ssz);
  67        if (rammap && idx < *cnt) {
  68                rammap = rammap + *hdr + (idx * (*len + (snr * ssz)));
  69                *hdr = *len;
  70                *cnt = snr;
  71                *len = ssz;
  72                return rammap;
  73        }
  74        return 0x0000;
  75}
  76
  77u32
  78nvbios_rammapEp(struct nouveau_bios *bios, int idx,
  79                u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
  80                struct nvbios_ramcfg *p)
  81{
  82        u32 data = nvbios_rammapEe(bios, idx, ver, hdr, cnt, len), temp;
  83        memset(p, 0x00, sizeof(*p));
  84        p->rammap_ver = *ver;
  85        p->rammap_hdr = *hdr;
  86        switch (!!data * *ver) {
  87        case 0x10:
  88                p->rammap_min      =  nv_ro16(bios, data + 0x00);
  89                p->rammap_max      =  nv_ro16(bios, data + 0x02);
  90                p->rammap_10_04_02 = (nv_ro08(bios, data + 0x04) & 0x02) >> 1;
  91                p->rammap_10_04_08 = (nv_ro08(bios, data + 0x04) & 0x08) >> 3;
  92                break;
  93        case 0x11:
  94                p->rammap_min      =  nv_ro16(bios, data + 0x00);
  95                p->rammap_max      =  nv_ro16(bios, data + 0x02);
  96                p->rammap_11_08_01 = (nv_ro08(bios, data + 0x08) & 0x01) >> 0;
  97                p->rammap_11_08_0c = (nv_ro08(bios, data + 0x08) & 0x0c) >> 2;
  98                p->rammap_11_08_10 = (nv_ro08(bios, data + 0x08) & 0x10) >> 4;
  99                temp = nv_ro32(bios, data + 0x09);
 100                p->rammap_11_09_01ff = (temp & 0x000001ff) >> 0;
 101                p->rammap_11_0a_03fe = (temp & 0x0003fe00) >> 9;
 102                p->rammap_11_0a_0400 = (temp & 0x00040000) >> 18;
 103                p->rammap_11_0a_0800 = (temp & 0x00080000) >> 19;
 104                p->rammap_11_0b_01f0 = (temp & 0x01f00000) >> 20;
 105                p->rammap_11_0b_0200 = (temp & 0x02000000) >> 25;
 106                p->rammap_11_0b_0400 = (temp & 0x04000000) >> 26;
 107                p->rammap_11_0b_0800 = (temp & 0x08000000) >> 27;
 108                p->rammap_11_0d    =  nv_ro08(bios, data + 0x0d);
 109                p->rammap_11_0e    =  nv_ro08(bios, data + 0x0e);
 110                p->rammap_11_0f    =  nv_ro08(bios, data + 0x0f);
 111                p->rammap_11_11_0c = (nv_ro08(bios, data + 0x11) & 0x0c) >> 2;
 112                break;
 113        default:
 114                data = 0;
 115                break;
 116        }
 117        return data;
 118}
 119
 120u32
 121nvbios_rammapEm(struct nouveau_bios *bios, u16 mhz,
 122                u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
 123                struct nvbios_ramcfg *info)
 124{
 125        int idx = 0;
 126        u32 data;
 127        while ((data = nvbios_rammapEp(bios, idx++, ver, hdr, cnt, len, info))) {
 128                if (mhz >= info->rammap_min && mhz <= info->rammap_max)
 129                        break;
 130        }
 131        return data;
 132}
 133
 134u32
 135nvbios_rammapSe(struct nouveau_bios *bios, u32 data,
 136                u8 ever, u8 ehdr, u8 ecnt, u8 elen, int idx,
 137                u8 *ver, u8 *hdr)
 138{
 139        if (idx < ecnt) {
 140                data = data + ehdr + (idx * elen);
 141                *ver = ever;
 142                *hdr = elen;
 143                return data;
 144        }
 145        return 0;
 146}
 147
 148u32
 149nvbios_rammapSp(struct nouveau_bios *bios, u32 data,
 150                u8 ever, u8 ehdr, u8 ecnt, u8 elen, int idx,
 151                u8 *ver, u8 *hdr, struct nvbios_ramcfg *p)
 152{
 153        data = nvbios_rammapSe(bios, data, ever, ehdr, ecnt, elen, idx, ver, hdr);
 154        p->ramcfg_ver = *ver;
 155        p->ramcfg_hdr = *hdr;
 156        switch (!!data * *ver) {
 157        case 0x10:
 158                p->ramcfg_timing   =  nv_ro08(bios, data + 0x01);
 159                p->ramcfg_10_02_01 = (nv_ro08(bios, data + 0x02) & 0x01) >> 0;
 160                p->ramcfg_10_02_02 = (nv_ro08(bios, data + 0x02) & 0x02) >> 1;
 161                p->ramcfg_10_02_04 = (nv_ro08(bios, data + 0x02) & 0x04) >> 2;
 162                p->ramcfg_10_02_08 = (nv_ro08(bios, data + 0x02) & 0x08) >> 3;
 163                p->ramcfg_10_02_10 = (nv_ro08(bios, data + 0x02) & 0x10) >> 4;
 164                p->ramcfg_10_02_20 = (nv_ro08(bios, data + 0x02) & 0x20) >> 5;
 165                p->ramcfg_10_02_40 = (nv_ro08(bios, data + 0x02) & 0x40) >> 6;
 166                p->ramcfg_10_03_0f = (nv_ro08(bios, data + 0x03) & 0x0f) >> 0;
 167                p->ramcfg_10_05    = (nv_ro08(bios, data + 0x05) & 0xff) >> 0;
 168                p->ramcfg_10_06    = (nv_ro08(bios, data + 0x06) & 0xff) >> 0;
 169                p->ramcfg_10_07    = (nv_ro08(bios, data + 0x07) & 0xff) >> 0;
 170                p->ramcfg_10_08    = (nv_ro08(bios, data + 0x08) & 0xff) >> 0;
 171                p->ramcfg_10_09_0f = (nv_ro08(bios, data + 0x09) & 0x0f) >> 0;
 172                p->ramcfg_10_09_f0 = (nv_ro08(bios, data + 0x09) & 0xf0) >> 4;
 173                break;
 174        case 0x11:
 175                p->ramcfg_timing   =  nv_ro08(bios, data + 0x00);
 176                p->ramcfg_11_01_01 = (nv_ro08(bios, data + 0x01) & 0x01) >> 0;
 177                p->ramcfg_11_01_02 = (nv_ro08(bios, data + 0x01) & 0x02) >> 1;
 178                p->ramcfg_11_01_04 = (nv_ro08(bios, data + 0x01) & 0x04) >> 2;
 179                p->ramcfg_11_01_08 = (nv_ro08(bios, data + 0x01) & 0x08) >> 3;
 180                p->ramcfg_11_01_10 = (nv_ro08(bios, data + 0x01) & 0x10) >> 4;
 181                p->ramcfg_11_01_20 = (nv_ro08(bios, data + 0x01) & 0x20) >> 5;
 182                p->ramcfg_11_01_40 = (nv_ro08(bios, data + 0x01) & 0x40) >> 6;
 183                p->ramcfg_11_01_80 = (nv_ro08(bios, data + 0x01) & 0x80) >> 7;
 184                p->ramcfg_11_02_03 = (nv_ro08(bios, data + 0x02) & 0x03) >> 0;
 185                p->ramcfg_11_02_04 = (nv_ro08(bios, data + 0x02) & 0x04) >> 2;
 186                p->ramcfg_11_02_08 = (nv_ro08(bios, data + 0x02) & 0x08) >> 3;
 187                p->ramcfg_11_02_10 = (nv_ro08(bios, data + 0x02) & 0x10) >> 4;
 188                p->ramcfg_11_02_40 = (nv_ro08(bios, data + 0x02) & 0x40) >> 6;
 189                p->ramcfg_11_02_80 = (nv_ro08(bios, data + 0x02) & 0x80) >> 7;
 190                p->ramcfg_11_03_0f = (nv_ro08(bios, data + 0x03) & 0x0f) >> 0;
 191                p->ramcfg_11_03_30 = (nv_ro08(bios, data + 0x03) & 0x30) >> 4;
 192                p->ramcfg_11_03_c0 = (nv_ro08(bios, data + 0x03) & 0xc0) >> 6;
 193                p->ramcfg_11_03_f0 = (nv_ro08(bios, data + 0x03) & 0xf0) >> 4;
 194                p->ramcfg_11_04    = (nv_ro08(bios, data + 0x04) & 0xff) >> 0;
 195                p->ramcfg_11_06    = (nv_ro08(bios, data + 0x06) & 0xff) >> 0;
 196                p->ramcfg_11_07_02 = (nv_ro08(bios, data + 0x07) & 0x02) >> 1;
 197                p->ramcfg_11_07_04 = (nv_ro08(bios, data + 0x07) & 0x04) >> 2;
 198                p->ramcfg_11_07_08 = (nv_ro08(bios, data + 0x07) & 0x08) >> 3;
 199                p->ramcfg_11_07_10 = (nv_ro08(bios, data + 0x07) & 0x10) >> 4;
 200                p->ramcfg_11_07_40 = (nv_ro08(bios, data + 0x07) & 0x40) >> 6;
 201                p->ramcfg_11_07_80 = (nv_ro08(bios, data + 0x07) & 0x80) >> 7;
 202                p->ramcfg_11_08_01 = (nv_ro08(bios, data + 0x08) & 0x01) >> 0;
 203                p->ramcfg_11_08_02 = (nv_ro08(bios, data + 0x08) & 0x02) >> 1;
 204                p->ramcfg_11_08_04 = (nv_ro08(bios, data + 0x08) & 0x04) >> 2;
 205                p->ramcfg_11_08_08 = (nv_ro08(bios, data + 0x08) & 0x08) >> 3;
 206                p->ramcfg_11_08_10 = (nv_ro08(bios, data + 0x08) & 0x10) >> 4;
 207                p->ramcfg_11_08_20 = (nv_ro08(bios, data + 0x08) & 0x20) >> 5;
 208                p->ramcfg_11_09    = (nv_ro08(bios, data + 0x09) & 0xff) >> 0;
 209                break;
 210        default:
 211                data = 0;
 212                break;
 213        }
 214        return data;
 215}
 216