| Message ID | 20240910105242.3357276-1-raag.jadav@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v3] drm/i915/hwmon: expose package temperature | expand |
On 9/10/2024 4:22 PM, Raag Jadav wrote: > Add hwmon support for temp1_input attribute, which will expose package > temperature in millidegree Celsius. With this in place we can monitor > package temperature using lm-sensors tool. > > $ sensors > i915-pci-0300 > Adapter: PCI adapter > in0: 990.00 mV > fan1: 1260 RPM > temp1: +45.0°C > power1: N/A (max = 35.00 W) > energy1: 12.62 kJ > > v2: Use switch case (Anshuman) > v3: Comment adjustment (Riana) > > Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/11276 > Signed-off-by: Raag Jadav <raag.jadav@intel.com> > Reviewed-by: Anshuman Gupta <anshuman.gupta@intel.com> > Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Looks good to me Reviewed-by: Riana Tauro <riana.tauro@intel.com> > --- > .../ABI/testing/sysfs-driver-intel-i915-hwmon | 8 ++++ > drivers/gpu/drm/i915/i915_hwmon.c | 40 +++++++++++++++++++ > drivers/gpu/drm/i915/intel_mchbar_regs.h | 4 ++ > 3 files changed, 52 insertions(+) > > diff --git a/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon b/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon > index be4141a7522f..a885e5316d02 100644 > --- a/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon > +++ b/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon > @@ -83,3 +83,11 @@ Contact: intel-gfx@lists.freedesktop.org > Description: RO. Fan speed of device in RPM. > > Only supported for particular Intel i915 graphics platforms. > + > +What: /sys/bus/pci/drivers/i915/.../hwmon/hwmon<i>/temp1_input > +Date: November 2024 > +KernelVersion: 6.12 > +Contact: intel-gfx@lists.freedesktop.org > +Description: RO. GPU package temperature in millidegree Celsius. > + > + Only supported for particular Intel i915 graphics platforms. > diff --git a/drivers/gpu/drm/i915/i915_hwmon.c b/drivers/gpu/drm/i915/i915_hwmon.c > index 17d30f6b84b0..7dfe1784153f 100644 > --- a/drivers/gpu/drm/i915/i915_hwmon.c > +++ b/drivers/gpu/drm/i915/i915_hwmon.c > @@ -7,6 +7,7 @@ > #include <linux/hwmon-sysfs.h> > #include <linux/jiffies.h> > #include <linux/types.h> > +#include <linux/units.h> > > #include "i915_drv.h" > #include "i915_hwmon.h" > @@ -32,6 +33,7 @@ > > struct hwm_reg { > i915_reg_t gt_perf_status; > + i915_reg_t pkg_temp; > i915_reg_t pkg_power_sku_unit; > i915_reg_t pkg_power_sku; > i915_reg_t pkg_rapl_limit; > @@ -280,6 +282,7 @@ static const struct attribute_group *hwm_groups[] = { > }; > > static const struct hwmon_channel_info * const hwm_info[] = { > + HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT), > HWMON_CHANNEL_INFO(in, HWMON_I_INPUT), > HWMON_CHANNEL_INFO(power, HWMON_P_MAX | HWMON_P_RATED_MAX | HWMON_P_CRIT), > HWMON_CHANNEL_INFO(energy, HWMON_E_INPUT), > @@ -310,6 +313,37 @@ static int hwm_pcode_write_i1(struct drm_i915_private *i915, u32 uval) > POWER_SETUP_SUBCOMMAND_WRITE_I1, 0, uval); > } > > +static umode_t > +hwm_temp_is_visible(const struct hwm_drvdata *ddat, u32 attr) > +{ > + struct i915_hwmon *hwmon = ddat->hwmon; > + > + if (attr == hwmon_temp_input && i915_mmio_reg_valid(hwmon->rg.pkg_temp)) > + return 0444; > + > + return 0; > +} > + > +static int > +hwm_temp_read(struct hwm_drvdata *ddat, u32 attr, long *val) > +{ > + struct i915_hwmon *hwmon = ddat->hwmon; > + intel_wakeref_t wakeref; > + u32 reg_val; > + > + switch (attr) { > + case hwmon_temp_input: > + with_intel_runtime_pm(ddat->uncore->rpm, wakeref) > + reg_val = intel_uncore_read(ddat->uncore, hwmon->rg.pkg_temp); > + > + /* HW register value is in degrees Celsius, convert to millidegrees. */ > + *val = REG_FIELD_GET(TEMP_MASK, reg_val) * MILLIDEGREE_PER_DEGREE; > + return 0; > + default: > + return -EOPNOTSUPP; > + } > +} > + > static umode_t > hwm_in_is_visible(const struct hwm_drvdata *ddat, u32 attr) > { > @@ -692,6 +726,8 @@ hwm_is_visible(const void *drvdata, enum hwmon_sensor_types type, > struct hwm_drvdata *ddat = (struct hwm_drvdata *)drvdata; > > switch (type) { > + case hwmon_temp: > + return hwm_temp_is_visible(ddat, attr); > case hwmon_in: > return hwm_in_is_visible(ddat, attr); > case hwmon_power: > @@ -714,6 +750,8 @@ hwm_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, > struct hwm_drvdata *ddat = dev_get_drvdata(dev); > > switch (type) { > + case hwmon_temp: > + return hwm_temp_read(ddat, attr, val); > case hwmon_in: > return hwm_in_read(ddat, attr, val); > case hwmon_power: > @@ -810,6 +848,7 @@ hwm_get_preregistration_info(struct drm_i915_private *i915) > hwmon->rg.gt_perf_status = GEN12_RPSTAT1; > > if (IS_DG1(i915) || IS_DG2(i915)) { > + hwmon->rg.pkg_temp = PCU_PACKAGE_TEMPERATURE; > hwmon->rg.pkg_power_sku_unit = PCU_PACKAGE_POWER_SKU_UNIT; > hwmon->rg.pkg_power_sku = PCU_PACKAGE_POWER_SKU; > hwmon->rg.pkg_rapl_limit = PCU_PACKAGE_RAPL_LIMIT; > @@ -817,6 +856,7 @@ hwm_get_preregistration_info(struct drm_i915_private *i915) > hwmon->rg.energy_status_tile = INVALID_MMIO_REG; > hwmon->rg.fan_speed = PCU_PWM_FAN_SPEED; > } else { > + hwmon->rg.pkg_temp = INVALID_MMIO_REG; > hwmon->rg.pkg_power_sku_unit = INVALID_MMIO_REG; > hwmon->rg.pkg_power_sku = INVALID_MMIO_REG; > hwmon->rg.pkg_rapl_limit = INVALID_MMIO_REG; > diff --git a/drivers/gpu/drm/i915/intel_mchbar_regs.h b/drivers/gpu/drm/i915/intel_mchbar_regs.h > index 73900c098d59..dc2477179c3e 100644 > --- a/drivers/gpu/drm/i915/intel_mchbar_regs.h > +++ b/drivers/gpu/drm/i915/intel_mchbar_regs.h > @@ -207,6 +207,10 @@ > #define PCU_PACKAGE_ENERGY_STATUS _MMIO(MCHBAR_MIRROR_BASE_SNB + 0x593c) > > #define GEN6_GT_PERF_STATUS _MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5948) > + > +#define PCU_PACKAGE_TEMPERATURE _MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5978) > +#define TEMP_MASK REG_GENMASK(7, 0) > + > #define GEN6_RP_STATE_LIMITS _MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5994) > #define GEN6_RP_STATE_CAP _MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5998) > #define RP0_CAP_MASK REG_GENMASK(7, 0)
On Fri, Sep 13, 2024 at 11:14:22AM +0530, Riana Tauro wrote: > On 9/10/2024 4:22 PM, Raag Jadav wrote: > > Add hwmon support for temp1_input attribute, which will expose package > > temperature in millidegree Celsius. With this in place we can monitor > > package temperature using lm-sensors tool. > > > > $ sensors > > i915-pci-0300 > > Adapter: PCI adapter > > in0: 990.00 mV > > fan1: 1260 RPM > > temp1: +45.0°C > > power1: N/A (max = 35.00 W) > > energy1: 12.62 kJ > > > > v2: Use switch case (Anshuman) > > v3: Comment adjustment (Riana) > > > > Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/11276 > > Signed-off-by: Raag Jadav <raag.jadav@intel.com> > > Reviewed-by: Anshuman Gupta <anshuman.gupta@intel.com> > > Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> > Looks good to me > Reviewed-by: Riana Tauro <riana.tauro@intel.com> Thank you :) Andi, can you pick this one up? Anshuman's machine is down. Raag
Hi Raag, On Fri, Sep 13, 2024 at 11:51:22AM GMT, Raag Jadav wrote: > On Fri, Sep 13, 2024 at 11:14:22AM +0530, Riana Tauro wrote: > > On 9/10/2024 4:22 PM, Raag Jadav wrote: > > > Add hwmon support for temp1_input attribute, which will expose package > > > temperature in millidegree Celsius. With this in place we can monitor > > > package temperature using lm-sensors tool. > > > > > > $ sensors > > > i915-pci-0300 > > > Adapter: PCI adapter > > > in0: 990.00 mV > > > fan1: 1260 RPM > > > temp1: +45.0°C > > > power1: N/A (max = 35.00 W) > > > energy1: 12.62 kJ > > > > > > v2: Use switch case (Anshuman) > > > v3: Comment adjustment (Riana) > > > > > > Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/11276 > > > Signed-off-by: Raag Jadav <raag.jadav@intel.com> > > > Reviewed-by: Anshuman Gupta <anshuman.gupta@intel.com> > > > Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> > > Looks good to me > > Reviewed-by: Riana Tauro <riana.tauro@intel.com> > > Thank you :) > > Andi, can you pick this one up? Anshuman's machine is down. Sure! Andi
Hi Raag, On Fri, Sep 13, 2024 at 10:57:00AM GMT, Andi Shyti wrote: > On Fri, Sep 13, 2024 at 11:51:22AM GMT, Raag Jadav wrote: > > On Fri, Sep 13, 2024 at 11:14:22AM +0530, Riana Tauro wrote: > > > On 9/10/2024 4:22 PM, Raag Jadav wrote: > > > > Add hwmon support for temp1_input attribute, which will expose package > > > > temperature in millidegree Celsius. With this in place we can monitor > > > > package temperature using lm-sensors tool. > > > > > > > > $ sensors > > > > i915-pci-0300 > > > > Adapter: PCI adapter > > > > in0: 990.00 mV > > > > fan1: 1260 RPM > > > > temp1: +45.0°C > > > > power1: N/A (max = 35.00 W) > > > > energy1: 12.62 kJ > > > > > > > > v2: Use switch case (Anshuman) > > > > v3: Comment adjustment (Riana) > > > > > > > > Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/11276 > > > > Signed-off-by: Raag Jadav <raag.jadav@intel.com> > > > > Reviewed-by: Anshuman Gupta <anshuman.gupta@intel.com> > > > > Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> > > > Looks good to me > > > Reviewed-by: Riana Tauro <riana.tauro@intel.com> > > > > Thank you :) > > > > Andi, can you pick this one up? Anshuman's machine is down. > > Sure! merged to drm-intel-next. Thanks, Andi
diff --git a/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon b/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon index be4141a7522f..a885e5316d02 100644 --- a/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon +++ b/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon @@ -83,3 +83,11 @@ Contact: intel-gfx@lists.freedesktop.org Description: RO. Fan speed of device in RPM. Only supported for particular Intel i915 graphics platforms. + +What: /sys/bus/pci/drivers/i915/.../hwmon/hwmon<i>/temp1_input +Date: November 2024 +KernelVersion: 6.12 +Contact: intel-gfx@lists.freedesktop.org +Description: RO. GPU package temperature in millidegree Celsius. + + Only supported for particular Intel i915 graphics platforms. diff --git a/drivers/gpu/drm/i915/i915_hwmon.c b/drivers/gpu/drm/i915/i915_hwmon.c index 17d30f6b84b0..7dfe1784153f 100644 --- a/drivers/gpu/drm/i915/i915_hwmon.c +++ b/drivers/gpu/drm/i915/i915_hwmon.c @@ -7,6 +7,7 @@ #include <linux/hwmon-sysfs.h> #include <linux/jiffies.h> #include <linux/types.h> +#include <linux/units.h> #include "i915_drv.h" #include "i915_hwmon.h" @@ -32,6 +33,7 @@ struct hwm_reg { i915_reg_t gt_perf_status; + i915_reg_t pkg_temp; i915_reg_t pkg_power_sku_unit; i915_reg_t pkg_power_sku; i915_reg_t pkg_rapl_limit; @@ -280,6 +282,7 @@ static const struct attribute_group *hwm_groups[] = { }; static const struct hwmon_channel_info * const hwm_info[] = { + HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT), HWMON_CHANNEL_INFO(in, HWMON_I_INPUT), HWMON_CHANNEL_INFO(power, HWMON_P_MAX | HWMON_P_RATED_MAX | HWMON_P_CRIT), HWMON_CHANNEL_INFO(energy, HWMON_E_INPUT), @@ -310,6 +313,37 @@ static int hwm_pcode_write_i1(struct drm_i915_private *i915, u32 uval) POWER_SETUP_SUBCOMMAND_WRITE_I1, 0, uval); } +static umode_t +hwm_temp_is_visible(const struct hwm_drvdata *ddat, u32 attr) +{ + struct i915_hwmon *hwmon = ddat->hwmon; + + if (attr == hwmon_temp_input && i915_mmio_reg_valid(hwmon->rg.pkg_temp)) + return 0444; + + return 0; +} + +static int +hwm_temp_read(struct hwm_drvdata *ddat, u32 attr, long *val) +{ + struct i915_hwmon *hwmon = ddat->hwmon; + intel_wakeref_t wakeref; + u32 reg_val; + + switch (attr) { + case hwmon_temp_input: + with_intel_runtime_pm(ddat->uncore->rpm, wakeref) + reg_val = intel_uncore_read(ddat->uncore, hwmon->rg.pkg_temp); + + /* HW register value is in degrees Celsius, convert to millidegrees. */ + *val = REG_FIELD_GET(TEMP_MASK, reg_val) * MILLIDEGREE_PER_DEGREE; + return 0; + default: + return -EOPNOTSUPP; + } +} + static umode_t hwm_in_is_visible(const struct hwm_drvdata *ddat, u32 attr) { @@ -692,6 +726,8 @@ hwm_is_visible(const void *drvdata, enum hwmon_sensor_types type, struct hwm_drvdata *ddat = (struct hwm_drvdata *)drvdata; switch (type) { + case hwmon_temp: + return hwm_temp_is_visible(ddat, attr); case hwmon_in: return hwm_in_is_visible(ddat, attr); case hwmon_power: @@ -714,6 +750,8 @@ hwm_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, struct hwm_drvdata *ddat = dev_get_drvdata(dev); switch (type) { + case hwmon_temp: + return hwm_temp_read(ddat, attr, val); case hwmon_in: return hwm_in_read(ddat, attr, val); case hwmon_power: @@ -810,6 +848,7 @@ hwm_get_preregistration_info(struct drm_i915_private *i915) hwmon->rg.gt_perf_status = GEN12_RPSTAT1; if (IS_DG1(i915) || IS_DG2(i915)) { + hwmon->rg.pkg_temp = PCU_PACKAGE_TEMPERATURE; hwmon->rg.pkg_power_sku_unit = PCU_PACKAGE_POWER_SKU_UNIT; hwmon->rg.pkg_power_sku = PCU_PACKAGE_POWER_SKU; hwmon->rg.pkg_rapl_limit = PCU_PACKAGE_RAPL_LIMIT; @@ -817,6 +856,7 @@ hwm_get_preregistration_info(struct drm_i915_private *i915) hwmon->rg.energy_status_tile = INVALID_MMIO_REG; hwmon->rg.fan_speed = PCU_PWM_FAN_SPEED; } else { + hwmon->rg.pkg_temp = INVALID_MMIO_REG; hwmon->rg.pkg_power_sku_unit = INVALID_MMIO_REG; hwmon->rg.pkg_power_sku = INVALID_MMIO_REG; hwmon->rg.pkg_rapl_limit = INVALID_MMIO_REG; diff --git a/drivers/gpu/drm/i915/intel_mchbar_regs.h b/drivers/gpu/drm/i915/intel_mchbar_regs.h index 73900c098d59..dc2477179c3e 100644 --- a/drivers/gpu/drm/i915/intel_mchbar_regs.h +++ b/drivers/gpu/drm/i915/intel_mchbar_regs.h @@ -207,6 +207,10 @@ #define PCU_PACKAGE_ENERGY_STATUS _MMIO(MCHBAR_MIRROR_BASE_SNB + 0x593c) #define GEN6_GT_PERF_STATUS _MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5948) + +#define PCU_PACKAGE_TEMPERATURE _MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5978) +#define TEMP_MASK REG_GENMASK(7, 0) + #define GEN6_RP_STATE_LIMITS _MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5994) #define GEN6_RP_STATE_CAP _MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5998) #define RP0_CAP_MASK REG_GENMASK(7, 0)