--- /dev/null
+/*
+ * 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>
+
+#include <core/device.h>
+
+static u16
+therm_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *len, u8 *cnt)
+{
+ struct bit_entry bit_P;
+ u16 therm = 0;
+
+ if (!bit_entry(bios, 'P', &bit_P)) {
+ if (bit_P.version == 1)
+ therm = nv_ro16(bios, bit_P.offset + 12);
+ else if (bit_P.version == 2)
+ therm = nv_ro16(bios, bit_P.offset + 16);
+ else
+ nv_error(bios,
+ "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 0x0000;
+
+ *ver = nv_ro08(bios, therm + 0);
+ *hdr = nv_ro08(bios, therm + 1);
+ *len = nv_ro08(bios, therm + 2);
+ *cnt = nv_ro08(bios, therm + 3);
+ return therm + nv_ro08(bios, therm + 1);
+}
+
+static u16
+nvbios_therm_entry(struct nvkm_bios *bios, int idx, u8 *ver, u8 *len)
+{
+ u8 hdr, cnt;
+ u16 therm = therm_table(bios, ver, &hdr, len, &cnt);
+ if (therm && idx < cnt)
+ return therm + idx * *len;
+ return 0x0000;
+}
+
+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;
+ u16 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 = nv_ro16(bios, entry + 1);
+
+ switch (nv_ro08(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) nv_ro08(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;
+ u16 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 = nv_ro16(bios, entry + 1);
+
+ switch (nv_ro08(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 = nv_ro08(bios, entry + 1);
+ fan->linear_max_temp = nv_ro08(bios, entry + 2);
+ break;
+ }
+ }
+
+ /* starting from fermi, fan management is always linear */
+ if (nv_device(bios)->card_type >= NV_C0 &&
+ fan->fan_mode == NVBIOS_THERM_FAN_OTHER) {
+ fan->fan_mode = NVBIOS_THERM_FAN_LINEAR;
+ }
+
+ return 0;
+}
Code Review / kvmfornfv.git / blobdiff