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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 | /* * Copyright 2012 Nouveau Community * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: Martin Peres */ #include <subdev/bios.h> #include <subdev/bios/bit.h> #include <subdev/bios/therm.h> static u32 therm_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *len, u8 *cnt) { struct bit_entry bit_P; u32 therm = 0; if (!bit_entry(bios, 'P', &bit_P)) { if (bit_P.version == 1) therm = nvbios_rd32(bios, bit_P.offset + 12); else if (bit_P.version == 2) therm = nvbios_rd32(bios, bit_P.offset + 16); else nvkm_error(&bios->subdev, "unknown offset for thermal in BIT P %d\n", bit_P.version); } /* exit now if we haven't found the thermal table */ if (!therm) return 0; *ver = nvbios_rd08(bios, therm + 0); *hdr = nvbios_rd08(bios, therm + 1); *len = nvbios_rd08(bios, therm + 2); *cnt = nvbios_rd08(bios, therm + 3); return therm + nvbios_rd08(bios, therm + 1); } static u32 nvbios_therm_entry(struct nvkm_bios *bios, int idx, u8 *ver, u8 *len) { u8 hdr, cnt; u32 therm = therm_table(bios, ver, &hdr, len, &cnt); if (therm && idx < cnt) return therm + idx * *len; return 0; } int nvbios_therm_sensor_parse(struct nvkm_bios *bios, enum nvbios_therm_domain domain, struct nvbios_therm_sensor *sensor) { s8 thrs_section, sensor_section, offset; u8 ver, len, i; u32 entry; /* we only support the core domain for now */ if (domain != NVBIOS_THERM_DOMAIN_CORE) return -EINVAL; /* Read the entries from the table */ thrs_section = 0; sensor_section = -1; i = 0; while ((entry = nvbios_therm_entry(bios, i++, &ver, &len))) { s16 value = nvbios_rd16(bios, entry + 1); switch (nvbios_rd08(bios, entry + 0)) { case 0x0: thrs_section = value; if (value > 0) return 0; /* we do not try to support ambient */ break; case 0x01: sensor_section++; if (sensor_section == 0) { offset = ((s8) nvbios_rd08(bios, entry + 2)) / 2; sensor->offset_constant = offset; } break; case 0x04: if (thrs_section == 0) { sensor->thrs_critical.temp = (value & 0xff0) >> 4; sensor->thrs_critical.hysteresis = value & 0xf; } break; case 0x07: if (thrs_section == 0) { sensor->thrs_down_clock.temp = (value & 0xff0) >> 4; sensor->thrs_down_clock.hysteresis = value & 0xf; } break; case 0x08: if (thrs_section == 0) { sensor->thrs_fan_boost.temp = (value & 0xff0) >> 4; sensor->thrs_fan_boost.hysteresis = value & 0xf; } break; case 0x10: if (sensor_section == 0) sensor->offset_num = value; break; case 0x11: if (sensor_section == 0) sensor->offset_den = value; break; case 0x12: if (sensor_section == 0) sensor->slope_mult = value; break; case 0x13: if (sensor_section == 0) sensor->slope_div = value; break; case 0x32: if (thrs_section == 0) { sensor->thrs_shutdown.temp = (value & 0xff0) >> 4; sensor->thrs_shutdown.hysteresis = value & 0xf; } break; } } return 0; } int nvbios_therm_fan_parse(struct nvkm_bios *bios, struct nvbios_therm_fan *fan) { struct nvbios_therm_trip_point *cur_trip = NULL; u8 ver, len, i; u32 entry; uint8_t duty_lut[] = { 0, 0, 25, 0, 40, 0, 50, 0, 75, 0, 85, 0, 100, 0, 100, 0 }; i = 0; fan->nr_fan_trip = 0; fan->fan_mode = NVBIOS_THERM_FAN_OTHER; while ((entry = nvbios_therm_entry(bios, i++, &ver, &len))) { s16 value = nvbios_rd16(bios, entry + 1); switch (nvbios_rd08(bios, entry + 0)) { case 0x22: fan->min_duty = value & 0xff; fan->max_duty = (value & 0xff00) >> 8; break; case 0x24: fan->nr_fan_trip++; if (fan->fan_mode > NVBIOS_THERM_FAN_TRIP) fan->fan_mode = NVBIOS_THERM_FAN_TRIP; cur_trip = &fan->trip[fan->nr_fan_trip - 1]; cur_trip->hysteresis = value & 0xf; cur_trip->temp = (value & 0xff0) >> 4; cur_trip->fan_duty = duty_lut[(value & 0xf000) >> 12]; break; case 0x25: cur_trip = &fan->trip[fan->nr_fan_trip - 1]; cur_trip->fan_duty = value; break; case 0x26: if (!fan->pwm_freq) fan->pwm_freq = value; break; case 0x3b: fan->bump_period = value; break; case 0x3c: fan->slow_down_period = value; break; case 0x46: if (fan->fan_mode > NVBIOS_THERM_FAN_LINEAR) fan->fan_mode = NVBIOS_THERM_FAN_LINEAR; fan->linear_min_temp = nvbios_rd08(bios, entry + 1); fan->linear_max_temp = nvbios_rd08(bios, entry + 2); break; } } /* starting from fermi, fan management is always linear */ if (bios->subdev.device->card_type >= NV_C0 && fan->fan_mode == NVBIOS_THERM_FAN_OTHER) { fan->fan_mode = NVBIOS_THERM_FAN_LINEAR; } return 0; } |