diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_temp.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_temp.c | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_temp.c b/drivers/gpu/drm/nouveau/nouveau_temp.c new file mode 100644 index 000000000000..16bbbf1eff63 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nouveau_temp.c @@ -0,0 +1,309 @@ +/* + * Copyright 2010 PathScale inc. + * + * 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 "drmP.h" + +#include "nouveau_drv.h" +#include "nouveau_pm.h" + +static void +nouveau_temp_vbios_parse(struct drm_device *dev, u8 *temp) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_pm_engine *pm = &dev_priv->engine.pm; + struct nouveau_pm_temp_sensor_constants *sensor = &pm->sensor_constants; + struct nouveau_pm_threshold_temp *temps = &pm->threshold_temp; + int i, headerlen, recordlen, entries; + + if (!temp) { + NV_DEBUG(dev, "temperature table pointer invalid\n"); + return; + } + + /* Set the default sensor's contants */ + sensor->offset_constant = 0; + sensor->offset_mult = 1; + sensor->offset_div = 1; + sensor->slope_mult = 1; + sensor->slope_div = 1; + + /* Set the default temperature thresholds */ + temps->critical = 110; + temps->down_clock = 100; + temps->fan_boost = 90; + + /* Set the known default values to setup the temperature sensor */ + if (dev_priv->card_type >= NV_40) { + switch (dev_priv->chipset) { + case 0x43: + sensor->offset_mult = 32060; + sensor->offset_div = 1000; + sensor->slope_mult = 792; + sensor->slope_div = 1000; + break; + + case 0x44: + case 0x47: + case 0x4a: + sensor->offset_mult = 27839; + sensor->offset_div = 1000; + sensor->slope_mult = 780; + sensor->slope_div = 1000; + break; + + case 0x46: + sensor->offset_mult = -24775; + sensor->offset_div = 100; + sensor->slope_mult = 467; + sensor->slope_div = 10000; + break; + + case 0x49: + sensor->offset_mult = -25051; + sensor->offset_div = 100; + sensor->slope_mult = 458; + sensor->slope_div = 10000; + break; + + case 0x4b: + sensor->offset_mult = -24088; + sensor->offset_div = 100; + sensor->slope_mult = 442; + sensor->slope_div = 10000; + break; + + case 0x50: + sensor->offset_mult = -22749; + sensor->offset_div = 100; + sensor->slope_mult = 431; + sensor->slope_div = 10000; + break; + } + } + + headerlen = temp[1]; + recordlen = temp[2]; + entries = temp[3]; + temp = temp + headerlen; + + /* Read the entries from the table */ + for (i = 0; i < entries; i++) { + u16 value = ROM16(temp[1]); + + switch (temp[0]) { + case 0x01: + if ((value & 0x8f) == 0) + sensor->offset_constant = (value >> 9) & 0x7f; + break; + + case 0x04: + if ((value & 0xf00f) == 0xa000) /* core */ + temps->critical = (value&0x0ff0) >> 4; + break; + + case 0x07: + if ((value & 0xf00f) == 0xa000) /* core */ + temps->down_clock = (value&0x0ff0) >> 4; + break; + + case 0x08: + if ((value & 0xf00f) == 0xa000) /* core */ + temps->fan_boost = (value&0x0ff0) >> 4; + break; + + case 0x10: + sensor->offset_mult = value; + break; + + case 0x11: + sensor->offset_div = value; + break; + + case 0x12: + sensor->slope_mult = value; + break; + + case 0x13: + sensor->slope_div = value; + break; + } + temp += recordlen; + } + + nouveau_temp_safety_checks(dev); +} + +static int +nv40_sensor_setup(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_pm_engine *pm = &dev_priv->engine.pm; + struct nouveau_pm_temp_sensor_constants *sensor = &pm->sensor_constants; + u32 offset = sensor->offset_mult / sensor->offset_div; + u32 sensor_calibration; + + /* set up the sensors */ + sensor_calibration = 120 - offset - sensor->offset_constant; + sensor_calibration = sensor_calibration * sensor->slope_div / + sensor->slope_mult; + + if (dev_priv->chipset >= 0x46) + sensor_calibration |= 0x80000000; + else + sensor_calibration |= 0x10000000; + + nv_wr32(dev, 0x0015b0, sensor_calibration); + + /* Wait for the sensor to update */ + msleep(5); + + /* read */ + return nv_rd32(dev, 0x0015b4) & 0x1fff; +} + +int +nv40_temp_get(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_pm_engine *pm = &dev_priv->engine.pm; + struct nouveau_pm_temp_sensor_constants *sensor = &pm->sensor_constants; + int offset = sensor->offset_mult / sensor->offset_div; + int core_temp; + + if (dev_priv->chipset >= 0x50) { + core_temp = nv_rd32(dev, 0x20008); + } else { + core_temp = nv_rd32(dev, 0x0015b4) & 0x1fff; + /* Setup the sensor if the temperature is 0 */ + if (core_temp == 0) + core_temp = nv40_sensor_setup(dev); + } + + core_temp = core_temp * sensor->slope_mult / sensor->slope_div; + core_temp = core_temp + offset + sensor->offset_constant; + + return core_temp; +} + +int +nv84_temp_get(struct drm_device *dev) +{ + return nv_rd32(dev, 0x20400); +} + +void +nouveau_temp_safety_checks(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_pm_engine *pm = &dev_priv->engine.pm; + struct nouveau_pm_threshold_temp *temps = &pm->threshold_temp; + + if (temps->critical > 120) + temps->critical = 120; + else if (temps->critical < 80) + temps->critical = 80; + + if (temps->down_clock > 110) + temps->down_clock = 110; + else if (temps->down_clock < 60) + temps->down_clock = 60; + + if (temps->fan_boost > 100) + temps->fan_boost = 100; + else if (temps->fan_boost < 40) + temps->fan_boost = 40; +} + +static bool +probe_monitoring_device(struct nouveau_i2c_chan *i2c, + struct i2c_board_info *info) +{ + char modalias[16] = "i2c:"; + struct i2c_client *client; + + strlcat(modalias, info->type, sizeof(modalias)); + request_module(modalias); + + client = i2c_new_device(&i2c->adapter, info); + if (!client) + return false; + + if (!client->driver || client->driver->detect(client, info)) { + i2c_unregister_device(client); + return false; + } + + return true; +} + +static void +nouveau_temp_probe_i2c(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct dcb_table *dcb = &dev_priv->vbios.dcb; + struct i2c_board_info info[] = { + { I2C_BOARD_INFO("w83l785ts", 0x2d) }, + { I2C_BOARD_INFO("w83781d", 0x2d) }, + { I2C_BOARD_INFO("f75375", 0x2e) }, + { I2C_BOARD_INFO("adt7473", 0x2e) }, + { I2C_BOARD_INFO("lm99", 0x4c) }, + { } + }; + int idx = (dcb->version >= 0x40 ? + dcb->i2c_default_indices & 0xf : 2); + + nouveau_i2c_identify(dev, "monitoring device", info, + probe_monitoring_device, idx); +} + +void +nouveau_temp_init(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nvbios *bios = &dev_priv->vbios; + struct bit_entry P; + u8 *temp = NULL; + + if (bios->type == NVBIOS_BIT) { + if (bit_table(dev, 'P', &P)) + return; + + if (P.version == 1) + temp = ROMPTR(bios, P.data[12]); + else if (P.version == 2) + temp = ROMPTR(bios, P.data[16]); + else + NV_WARN(dev, "unknown temp for BIT P %d\n", P.version); + + nouveau_temp_vbios_parse(dev, temp); + } + + nouveau_temp_probe_i2c(dev); +} + +void +nouveau_temp_fini(struct drm_device *dev) +{ + +} |