Commit 34e9d85a authored by Martin Peres's avatar Martin Peres Committed by Ben Skeggs
Browse files

drm/nouveau: Add temperature support (vbios parsing, readings, hwmon) 



Signed-off-by: default avatarMartin Peres <martin.peres@ensi-bourges.fr>
Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent 64d202b4

drivers/gpu/drm/nouveau/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -25,7 +25,7 @@ nouveau-y := nouveau_drv.o nouveau_state.o nouveau_channel.o nouveau_mem.o \ 
             nv04_crtc.o nv04_display.o nv04_cursor.o nv04_fbcon.o \

             nv10_gpio.o nv50_gpio.o \

	     nv50_calc.o \

	     nv04_pm.o nv50_pm.o

	     nv04_pm.o nv50_pm.o nouveau_temp.o



nouveau-$(CONFIG_DRM_NOUVEAU_DEBUG) += nouveau_debugfs.o

nouveau-$(CONFIG_COMPAT) += nouveau_ioc32.o

drivers/gpu/drm/nouveau/nouveau_drv.h

+18 −0
Original line number Diff line number Diff line
@@ -387,10 +387,26 @@ struct nouveau_pm_level { 
	u8 fanspeed;

};



struct nouveau_pm_temp_sensor_constants {

	u16 offset_constant;

	s16 offset_mult;

	u16 offset_div;

	u16 slope_mult;

	u16 slope_div;

};



struct nouveau_pm_threshold_temp {

	s16 critical;

	s16 down_clock;

	s16 fan_boost;

};



struct nouveau_pm_engine {

	struct nouveau_pm_voltage voltage;

	struct nouveau_pm_level perflvl[NOUVEAU_PM_MAX_LEVEL];

	int nr_perflvl;

	struct nouveau_pm_temp_sensor_constants sensor_constants;

	struct nouveau_pm_threshold_temp threshold_temp;



	struct nouveau_pm_level boot;

	struct nouveau_pm_level *cur;
@@ -663,6 +679,8 @@ struct drm_nouveau_private { 


	struct nouveau_fbdev *nfbdev;

	struct apertures_struct *apertures;



	struct device *int_hwmon_dev;

};



static inline struct drm_nouveau_private *

drivers/gpu/drm/nouveau/nouveau_pm.c

+221 −38
Original line number Diff line number Diff line
@@ -27,6 +27,9 @@ 
#include "nouveau_drv.h"

#include "nouveau_pm.h"



#include <linux/hwmon.h>

#include <linux/hwmon-sysfs.h>



static int

nouveau_pm_clock_set(struct drm_device *dev, u8 id, u32 khz)

{
@@ -227,43 +230,14 @@ nouveau_pm_set_perflvl(struct device *d, struct device_attribute *a, 
DEVICE_ATTR(performance_level, S_IRUGO | S_IWUSR,

	    nouveau_pm_get_perflvl, nouveau_pm_set_perflvl);



int

nouveau_pm_init(struct drm_device *dev)

static int

nouveau_sysfs_init(struct drm_device *dev)

{

	struct drm_nouveau_private *dev_priv = dev->dev_private;

	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;

	struct device *d = &dev->pdev->dev;

	char info[256];

	int ret, i;



	nouveau_volt_init(dev);

	nouveau_perf_init(dev);



	NV_INFO(dev, "%d available performance level(s)\n", pm->nr_perflvl);

	for (i = 0; i < pm->nr_perflvl; i++) {

		nouveau_pm_perflvl_info(&pm->perflvl[i], info, sizeof(info));

		NV_INFO(dev, "%d: %s", pm->perflvl[i].id, info);

	}



	/* determine current ("boot") performance level */

	ret = nouveau_pm_perflvl_get(dev, &pm->boot);

	if (ret == 0) {

		pm->cur = &pm->boot;



		nouveau_pm_perflvl_info(&pm->boot, info, sizeof(info));

		NV_INFO(dev, "c: %s", info);

	}



	/* switch performance levels now if requested */

	if (nouveau_perflvl != NULL) {

		ret = nouveau_pm_profile_set(dev, nouveau_perflvl);

		if (ret) {

			NV_ERROR(dev, "error setting perflvl \"%s\": %d\n",

				 nouveau_perflvl, ret);

		}

	}



	/* initialise sysfs */

	ret = device_create_file(d, &dev_attr_performance_level);

	if (ret)

		return ret;
@@ -290,17 +264,14 @@ nouveau_pm_init(struct drm_device *dev) 
	return 0;

}



void

nouveau_pm_fini(struct drm_device *dev)

static void

nouveau_sysfs_fini(struct drm_device *dev)

{

	struct drm_nouveau_private *dev_priv = dev->dev_private;

	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;

	struct device *d = &dev->pdev->dev;

	int i;



	if (pm->cur != &pm->boot)

		nouveau_pm_perflvl_set(dev, &pm->boot);



	device_remove_file(d, &dev_attr_performance_level);

	for (i = 0; i < pm->nr_perflvl; i++) {

		struct nouveau_pm_level *pl = &pm->perflvl[i];
@@ -310,9 +281,221 @@ nouveau_pm_fini(struct drm_device *dev) 


		device_remove_file(d, &pl->dev_attr);

	}

}







static ssize_t

nouveau_hwmon_show_temp(struct device *d, struct device_attribute *a, char *buf)

{

	struct drm_device *dev = dev_get_drvdata(d);



	return snprintf(buf, PAGE_SIZE, "%d\n", nouveau_temp_get(dev)*1000);

}

static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, nouveau_hwmon_show_temp,

						  NULL, 0);



static ssize_t

nouveau_hwmon_max_temp(struct device *d, struct device_attribute *a, char *buf)

{

	struct drm_device *dev = dev_get_drvdata(d);

	struct drm_nouveau_private *dev_priv = dev->dev_private;

	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;

	struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;



	return snprintf(buf, PAGE_SIZE, "%d\n", temp->down_clock*1000);

}

static ssize_t

nouveau_hwmon_set_max_temp(struct device *d, struct device_attribute *a,

						const char *buf, size_t count)

{

	struct drm_device *dev = dev_get_drvdata(d);

	struct drm_nouveau_private *dev_priv = dev->dev_private;

	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;

	struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;

	long value;



	if (strict_strtoul(buf, 10, &value) == -EINVAL)

		return count;



	temp->down_clock = value/1000;



	nouveau_temp_safety_checks(dev);



	return count;

}

static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, nouveau_hwmon_max_temp,

						  nouveau_hwmon_set_max_temp,

						  0);



static ssize_t

nouveau_hwmon_critical_temp(struct device *d, struct device_attribute *a,

							char *buf)

{

	struct drm_device *dev = dev_get_drvdata(d);

	struct drm_nouveau_private *dev_priv = dev->dev_private;

	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;

	struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;



	return snprintf(buf, PAGE_SIZE, "%d\n", temp->critical*1000);

}

static ssize_t

nouveau_hwmon_set_critical_temp(struct device *d, struct device_attribute *a,

							    const char *buf,

								size_t count)

{

	struct drm_device *dev = dev_get_drvdata(d);

	struct drm_nouveau_private *dev_priv = dev->dev_private;

	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;

	struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;

	long value;



	if (strict_strtoul(buf, 10, &value) == -EINVAL)

		return count;



	temp->critical = value/1000;



	nouveau_temp_safety_checks(dev);



	return count;

}

static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO | S_IWUSR,

						nouveau_hwmon_critical_temp,

						nouveau_hwmon_set_critical_temp,

						0);



static ssize_t nouveau_hwmon_show_name(struct device *dev,

				      struct device_attribute *attr,

				      char *buf)

{

	return sprintf(buf, "nouveau\n");

}

static SENSOR_DEVICE_ATTR(name, S_IRUGO, nouveau_hwmon_show_name, NULL, 0);



static ssize_t nouveau_hwmon_show_update_rate(struct device *dev,

				      struct device_attribute *attr,

				      char *buf)

{

	return sprintf(buf, "1000\n");

}

static SENSOR_DEVICE_ATTR(update_rate, S_IRUGO,

						nouveau_hwmon_show_update_rate,

						NULL, 0);



static struct attribute *hwmon_attributes[] = {

	&sensor_dev_attr_temp1_input.dev_attr.attr,

	&sensor_dev_attr_temp1_max.dev_attr.attr,

	&sensor_dev_attr_temp1_crit.dev_attr.attr,

	&sensor_dev_attr_name.dev_attr.attr,

	&sensor_dev_attr_update_rate.dev_attr.attr,

	NULL

};



static const struct attribute_group hwmon_attrgroup = {

	.attrs = hwmon_attributes,

};



static int

nouveau_hwmon_init(struct drm_device *dev)

{

	struct drm_nouveau_private *dev_priv = dev->dev_private;

	struct device *hwmon_dev;

	int ret;



	dev_priv->int_hwmon_dev = NULL;



	hwmon_dev = hwmon_device_register(&dev->pdev->dev);

	if (IS_ERR(hwmon_dev)) {

		ret = PTR_ERR(hwmon_dev);

		NV_ERROR(dev,

			"Unable to register hwmon device: %d\n", ret);

		return ret;

	}

	dev_set_drvdata(hwmon_dev, dev);

	ret = sysfs_create_group(&hwmon_dev->kobj,

					&hwmon_attrgroup);

	if (ret) {

		NV_ERROR(dev,

			"Unable to create hwmon sysfs file: %d\n", ret);

		hwmon_device_unregister(hwmon_dev);

		return ret;

	}



	dev_priv->int_hwmon_dev = hwmon_dev;



	return 0;

}



static void

nouveau_hwmon_fini(struct drm_device *dev)

{

	struct drm_nouveau_private *dev_priv = dev->dev_private;



	if (dev_priv->int_hwmon_dev) {

		sysfs_remove_group(&dev_priv->int_hwmon_dev->kobj,

						   &hwmon_attrgroup);

		hwmon_device_unregister(dev_priv->int_hwmon_dev);

	}

}





int

nouveau_pm_init(struct drm_device *dev)

{

	struct drm_nouveau_private *dev_priv = dev->dev_private;

	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;

	char info[256];

	int ret, i;



	nouveau_volt_init(dev);

	nouveau_perf_init(dev);

	nouveau_temp_init(dev);



	NV_INFO(dev, "%d available performance level(s)\n", pm->nr_perflvl);

	for (i = 0; i < pm->nr_perflvl; i++) {

		nouveau_pm_perflvl_info(&pm->perflvl[i], info, sizeof(info));

		NV_INFO(dev, "%d: %s", pm->perflvl[i].id, info);

	}



	/* determine current ("boot") performance level */

	ret = nouveau_pm_perflvl_get(dev, &pm->boot);

	if (ret == 0) {

		pm->cur = &pm->boot;



		nouveau_pm_perflvl_info(&pm->boot, info, sizeof(info));

		NV_INFO(dev, "c: %s", info);

	}



	/* switch performance levels now if requested */

	if (nouveau_perflvl != NULL) {

		ret = nouveau_pm_profile_set(dev, nouveau_perflvl);

		if (ret) {

			NV_ERROR(dev, "error setting perflvl \"%s\": %d\n",

				 nouveau_perflvl, ret);

		}

	}



	nouveau_sysfs_init(dev);

	nouveau_hwmon_init(dev);



	return 0;

}



void

nouveau_pm_fini(struct drm_device *dev)

{

	struct drm_nouveau_private *dev_priv = dev->dev_private;

	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;



	if (pm->cur != &pm->boot)

		nouveau_pm_perflvl_set(dev, &pm->boot);



	nouveau_perf_fini(dev);

	nouveau_volt_fini(dev);

	nouveau_temp_fini(dev);



	nouveau_hwmon_fini(dev);

	nouveau_sysfs_fini(dev);

}



void

drivers/gpu/drm/nouveau/nouveau_pm.h

+6 −0
Original line number Diff line number Diff line
@@ -52,4 +52,10 @@ int nv50_pm_clock_get(struct drm_device *, u32 id); 
void *nv50_pm_clock_pre(struct drm_device *, u32 id, int khz);

void nv50_pm_clock_set(struct drm_device *, void *);



/* nouveau_temp.c */

void nouveau_temp_init(struct drm_device *dev);

void nouveau_temp_fini(struct drm_device *dev);

void nouveau_temp_safety_checks(struct drm_device *dev);

int16_t nouveau_temp_get(struct drm_device *dev);



#endif

drivers/gpu/drm/nouveau/nouveau_temp.c

0 → 100644
+272 −0
Original line number Diff line number Diff line 
/*

 * 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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