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/*
* 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"
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:
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:
value = (value&0x8f) == 0 ? (value >> 9) & 0x7f : 0;
sensor->offset_constant = value;
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 s16
nouveau_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);
}
s16
nouveau_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;
if (dev_priv->chipset >= 0x84) {
return nv_rd32(dev, 0x20400);
} else if (dev_priv->chipset >= 0x40) {
u32 offset = sensor->offset_mult / sensor->offset_div;
u32 core_temp;
if (dev_priv->chipset >= 0x50) {
core_temp = nv_rd32(dev, 0x20008);
} else {
core_temp = nv_rd32(dev, 0x0015b4);
/* Setup the sensor if the temperature is 0 */
if (core_temp == 0)
core_temp = nouveau_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;
} else {
NV_ERROR(dev,
"Temperature cannot be retrieved from an nv%x card\n",
dev_priv->chipset);
return 0;
}
return 0;
}
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;
}
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);
} else {
NV_WARN(dev, "BMP entry unknown for temperature table.\n");
}
nouveau_temp_vbios_parse(dev, temp);
}
void
nouveau_temp_fini(struct drm_device *dev)
{
}
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