| Message ID | 20220812173715.2398586-8-badal.nilawar@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/i915: Add HWMON support | expand |
On 8/12/22 10:37, Badal Nilawar wrote: > From: Dale B Stimson <dale.b.stimson@intel.com> > > Extend hwmon power/energy for XEHPSDV especially per gt level energy > usage. > > v2: Update to latest HWMON spec (Ashutosh) > > Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> > Signed-off-by: Dale B Stimson <dale.b.stimson@intel.com> > Signed-off-by: Badal Nilawar <badal.nilawar@intel.com> Acked-by: Guenter Roeck <linux@roeck-us.net> > --- > .../ABI/testing/sysfs-driver-intel-i915-hwmon | 7 +- > drivers/gpu/drm/i915/gt/intel_gt_regs.h | 5 + > drivers/gpu/drm/i915/i915_hwmon.c | 120 +++++++++++++++++- > 3 files changed, 128 insertions(+), 4 deletions(-) > > diff --git a/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon b/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon > index 34668f6c2dc4..e69bc43d4c9e 100644 > --- a/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon > +++ b/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon > @@ -65,6 +65,11 @@ What: /sys/devices/.../hwmon/hwmon<i>/energy1_input > Date: June 2022 > KernelVersion: 5.19 > Contact: dri-devel@lists.freedesktop.org > -Description: RO. Energy input of device in microjoules. > +Description: RO. Energy input of device or gt in microjoules. > + > + For i915 device level hwmon devices (name "i915") this > + reflects energy input for the entire device. For gt level > + hwmon devices (name "i915_gtN") this reflects energy input > + for the gt. > > Only supported for particular Intel i915 graphics platforms. > diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h > index 4604f6dbf8b6..dc3bc07cdd24 100644 > --- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h > +++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h > @@ -1569,4 +1569,9 @@ > > #define GEN12_SFC_DONE(n) _MMIO(0x1cc000 + (n) * 0x1000) > > +#define GT0_PACKAGE_ENERGY_STATUS _MMIO(0x250004) > +#define GT0_PACKAGE_RAPL_LIMIT _MMIO(0x250008) > +#define GT0_PACKAGE_POWER_SKU_UNIT _MMIO(0x250068) > +#define GT0_PLATFORM_ENERGY_STATUS _MMIO(0x25006c) > + > #endif /* __INTEL_GT_REGS__ */ > diff --git a/drivers/gpu/drm/i915/i915_hwmon.c b/drivers/gpu/drm/i915/i915_hwmon.c > index 6760133c7905..4c2e8d3cfe52 100644 > --- a/drivers/gpu/drm/i915/i915_hwmon.c > +++ b/drivers/gpu/drm/i915/i915_hwmon.c > @@ -11,6 +11,7 @@ > #include "i915_hwmon.h" > #include "intel_mchbar_regs.h" > #include "intel_pcode.h" > +#include "gt/intel_gt.h" > #include "gt/intel_gt_regs.h" > > /* > @@ -20,7 +21,7 @@ > * - curr - milliamperes > * - energy - microjoules > */ > -#define SF_TIME 1000 > +#define SF_TIME 1000 > #define SF_POWER 1000000 > #define SF_CURR 1000 > #define SF_ENERGY 1000000 > @@ -36,6 +37,7 @@ struct hwm_reg { > i915_reg_t pkg_power_sku; > i915_reg_t pkg_rapl_limit; > i915_reg_t energy_status_all; > + i915_reg_t energy_status_tile; > }; > > struct hwm_energy_info { > @@ -49,10 +51,12 @@ struct hwm_drvdata { > struct device *hwmon_dev; > struct hwm_energy_info ei; /* Energy info for energy1_input */ > char name[12]; > + int gt_n; > }; > > struct i915_hwmon { > struct hwm_drvdata ddat; > + struct hwm_drvdata ddat_gt[I915_MAX_GT]; > struct mutex hwmon_lock; /* counter overflow logic and rmw */ > struct hwm_reg rg; > u32 power_max_initial_value; > @@ -148,7 +152,10 @@ hwm_energy(struct hwm_drvdata *ddat, long *energy) > i915_reg_t rgaddr; > u32 reg_val; > > - rgaddr = hwmon->rg.energy_status_all; > + if (ddat->gt_n >= 0) > + rgaddr = hwmon->rg.energy_status_tile; > + else > + rgaddr = hwmon->rg.energy_status_all; > > if (!i915_mmio_reg_valid(rgaddr)) > return -EOPNOTSUPP; > @@ -310,6 +317,11 @@ static const struct hwmon_channel_info *hwm_info[] = { > NULL > }; > > +static const struct hwmon_channel_info *hwm_gt_info[] = { > + HWMON_CHANNEL_INFO(energy, HWMON_E_INPUT), > + NULL > +}; > + > /* I1 is exposed as power_crit or as curr_crit depending on bit 31 */ > static int hwm_pcode_read_i1(struct drm_i915_private *i915, u32 *uval) > { > @@ -442,7 +454,10 @@ hwm_energy_is_visible(const struct hwm_drvdata *ddat, u32 attr) > > switch (attr) { > case hwmon_energy_input: > - rgaddr = hwmon->rg.energy_status_all; > + if (ddat->gt_n >= 0) > + rgaddr = hwmon->rg.energy_status_tile; > + else > + rgaddr = hwmon->rg.energy_status_all; > return i915_mmio_reg_valid(rgaddr) ? 0444 : 0; > default: > return 0; > @@ -577,6 +592,44 @@ static const struct hwmon_chip_info hwm_chip_info = { > .info = hwm_info, > }; > > +static umode_t > +hwm_gt_is_visible(const void *drvdata, enum hwmon_sensor_types type, > + u32 attr, int channel) > +{ > + struct hwm_drvdata *ddat = (struct hwm_drvdata *)drvdata; > + > + switch (type) { > + case hwmon_energy: > + return hwm_energy_is_visible(ddat, attr); > + default: > + return 0; > + } > +} > + > +static int > +hwm_gt_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, > + int channel, long *val) > +{ > + struct hwm_drvdata *ddat = dev_get_drvdata(dev); > + > + switch (type) { > + case hwmon_energy: > + return hwm_energy_read(ddat, attr, val); > + default: > + return -EOPNOTSUPP; > + } > +} > + > +static const struct hwmon_ops hwm_gt_ops = { > + .is_visible = hwm_gt_is_visible, > + .read = hwm_gt_read, > +}; > + > +static const struct hwmon_chip_info hwm_gt_chip_info = { > + .ops = &hwm_gt_ops, > + .info = hwm_gt_info, > +}; > + > static void > hwm_get_preregistration_info(struct drm_i915_private *i915) > { > @@ -585,7 +638,9 @@ hwm_get_preregistration_info(struct drm_i915_private *i915) > struct hwm_drvdata *ddat = &hwmon->ddat; > intel_wakeref_t wakeref; > u32 val_sku_unit; > + struct intel_gt *gt; > long energy; > + int i; > > if (IS_DG1(i915) || IS_DG2(i915)) { > hwmon->rg.gt_perf_status = GEN12_RPSTAT1; > @@ -593,12 +648,21 @@ hwm_get_preregistration_info(struct drm_i915_private *i915) > hwmon->rg.pkg_power_sku = INVALID_MMIO_REG; > hwmon->rg.pkg_rapl_limit = PCU_PACKAGE_RAPL_LIMIT; > hwmon->rg.energy_status_all = PCU_PACKAGE_ENERGY_STATUS; > + hwmon->rg.energy_status_tile = INVALID_MMIO_REG; > + } else if (IS_XEHPSDV(i915)) { > + hwmon->rg.pkg_power_sku_unit = GT0_PACKAGE_POWER_SKU_UNIT; > + hwmon->rg.pkg_power_sku = INVALID_MMIO_REG; > + hwmon->rg.pkg_rapl_limit = GT0_PACKAGE_RAPL_LIMIT; > + hwmon->rg.energy_status_all = GT0_PLATFORM_ENERGY_STATUS; > + hwmon->rg.energy_status_tile = GT0_PACKAGE_ENERGY_STATUS; > + hwmon->rg.gt_perf_status = INVALID_MMIO_REG; > } else { > hwmon->rg.gt_perf_status = 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; > hwmon->rg.energy_status_all = INVALID_MMIO_REG; > + hwmon->rg.energy_status_tile = INVALID_MMIO_REG; > } > > with_intel_runtime_pm(uncore->rpm, wakeref) { > @@ -628,6 +692,10 @@ hwm_get_preregistration_info(struct drm_i915_private *i915) > */ > if (i915_mmio_reg_valid(hwmon->rg.energy_status_all)) > hwm_energy(ddat, &energy); > + if (i915_mmio_reg_valid(hwmon->rg.energy_status_tile)) { > + for_each_gt(gt, i915, i) > + hwm_energy(&hwmon->ddat_gt[i], &energy); > + } > } > > void i915_hwmon_register(struct drm_i915_private *i915) > @@ -636,6 +704,10 @@ void i915_hwmon_register(struct drm_i915_private *i915) > struct i915_hwmon *hwmon; > struct device *hwmon_dev; > struct hwm_drvdata *ddat; > + struct hwm_drvdata *ddat_gt; > + struct intel_gt *gt; > + const char *ddname; > + int i; > > /* hwmon is available only for dGfx */ > if (!IS_DGFX(i915)) > @@ -652,6 +724,16 @@ void i915_hwmon_register(struct drm_i915_private *i915) > ddat->hwmon = hwmon; > ddat->uncore = &i915->uncore; > snprintf(ddat->name, sizeof(ddat->name), "i915"); > + ddat->gt_n = -1; > + > + for_each_gt(gt, i915, i) { > + ddat_gt = hwmon->ddat_gt + i; > + > + ddat_gt->hwmon = hwmon; > + ddat_gt->uncore = gt->uncore; > + snprintf(ddat_gt->name, sizeof(ddat_gt->name), "i915_gt%u", i); > + ddat_gt->gt_n = i; > + } > > hwm_get_preregistration_info(i915); > > @@ -668,18 +750,50 @@ void i915_hwmon_register(struct drm_i915_private *i915) > } > > ddat->hwmon_dev = hwmon_dev; > + > + for_each_gt(gt, i915, i) { > + ddat_gt = hwmon->ddat_gt + i; > + /* > + * Create per-gt directories only if a per-gt attribute is > + * visible. Currently this is only energy > + */ > + if (!hwm_gt_is_visible(ddat_gt, hwmon_energy, hwmon_energy_input, 0)) > + continue; > + > + ddname = ddat_gt->name; > + hwmon_dev = hwmon_device_register_with_info(dev, ddname, > + ddat_gt, > + &hwm_gt_chip_info, > + NULL); > + if (!IS_ERR(hwmon_dev)) > + ddat_gt->hwmon_dev = hwmon_dev; > + } > } > > void i915_hwmon_unregister(struct drm_i915_private *i915) > { > struct i915_hwmon *hwmon; > struct hwm_drvdata *ddat; > + struct intel_gt *gt; > + int i; > > hwmon = fetch_and_zero(&i915->hwmon); > if (!hwmon) > return; > > ddat = &hwmon->ddat; > + > + for_each_gt(gt, i915, i) { > + struct hwm_drvdata *ddat_gt; > + > + ddat_gt = hwmon->ddat_gt + i; > + > + if (ddat_gt->hwmon_dev) { > + hwmon_device_unregister(ddat_gt->hwmon_dev); > + ddat_gt->hwmon_dev = NULL; > + } > + } > + > if (ddat->hwmon_dev) > hwmon_device_unregister(ddat->hwmon_dev); >
diff --git a/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon b/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon index 34668f6c2dc4..e69bc43d4c9e 100644 --- a/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon +++ b/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon @@ -65,6 +65,11 @@ What: /sys/devices/.../hwmon/hwmon<i>/energy1_input Date: June 2022 KernelVersion: 5.19 Contact: dri-devel@lists.freedesktop.org -Description: RO. Energy input of device in microjoules. +Description: RO. Energy input of device or gt in microjoules. + + For i915 device level hwmon devices (name "i915") this + reflects energy input for the entire device. For gt level + hwmon devices (name "i915_gtN") this reflects energy input + for the gt. Only supported for particular Intel i915 graphics platforms. diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h index 4604f6dbf8b6..dc3bc07cdd24 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h +++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h @@ -1569,4 +1569,9 @@ #define GEN12_SFC_DONE(n) _MMIO(0x1cc000 + (n) * 0x1000) +#define GT0_PACKAGE_ENERGY_STATUS _MMIO(0x250004) +#define GT0_PACKAGE_RAPL_LIMIT _MMIO(0x250008) +#define GT0_PACKAGE_POWER_SKU_UNIT _MMIO(0x250068) +#define GT0_PLATFORM_ENERGY_STATUS _MMIO(0x25006c) + #endif /* __INTEL_GT_REGS__ */ diff --git a/drivers/gpu/drm/i915/i915_hwmon.c b/drivers/gpu/drm/i915/i915_hwmon.c index 6760133c7905..4c2e8d3cfe52 100644 --- a/drivers/gpu/drm/i915/i915_hwmon.c +++ b/drivers/gpu/drm/i915/i915_hwmon.c @@ -11,6 +11,7 @@ #include "i915_hwmon.h" #include "intel_mchbar_regs.h" #include "intel_pcode.h" +#include "gt/intel_gt.h" #include "gt/intel_gt_regs.h" /* @@ -20,7 +21,7 @@ * - curr - milliamperes * - energy - microjoules */ -#define SF_TIME 1000 +#define SF_TIME 1000 #define SF_POWER 1000000 #define SF_CURR 1000 #define SF_ENERGY 1000000 @@ -36,6 +37,7 @@ struct hwm_reg { i915_reg_t pkg_power_sku; i915_reg_t pkg_rapl_limit; i915_reg_t energy_status_all; + i915_reg_t energy_status_tile; }; struct hwm_energy_info { @@ -49,10 +51,12 @@ struct hwm_drvdata { struct device *hwmon_dev; struct hwm_energy_info ei; /* Energy info for energy1_input */ char name[12]; + int gt_n; }; struct i915_hwmon { struct hwm_drvdata ddat; + struct hwm_drvdata ddat_gt[I915_MAX_GT]; struct mutex hwmon_lock; /* counter overflow logic and rmw */ struct hwm_reg rg; u32 power_max_initial_value; @@ -148,7 +152,10 @@ hwm_energy(struct hwm_drvdata *ddat, long *energy) i915_reg_t rgaddr; u32 reg_val; - rgaddr = hwmon->rg.energy_status_all; + if (ddat->gt_n >= 0) + rgaddr = hwmon->rg.energy_status_tile; + else + rgaddr = hwmon->rg.energy_status_all; if (!i915_mmio_reg_valid(rgaddr)) return -EOPNOTSUPP; @@ -310,6 +317,11 @@ static const struct hwmon_channel_info *hwm_info[] = { NULL }; +static const struct hwmon_channel_info *hwm_gt_info[] = { + HWMON_CHANNEL_INFO(energy, HWMON_E_INPUT), + NULL +}; + /* I1 is exposed as power_crit or as curr_crit depending on bit 31 */ static int hwm_pcode_read_i1(struct drm_i915_private *i915, u32 *uval) { @@ -442,7 +454,10 @@ hwm_energy_is_visible(const struct hwm_drvdata *ddat, u32 attr) switch (attr) { case hwmon_energy_input: - rgaddr = hwmon->rg.energy_status_all; + if (ddat->gt_n >= 0) + rgaddr = hwmon->rg.energy_status_tile; + else + rgaddr = hwmon->rg.energy_status_all; return i915_mmio_reg_valid(rgaddr) ? 0444 : 0; default: return 0; @@ -577,6 +592,44 @@ static const struct hwmon_chip_info hwm_chip_info = { .info = hwm_info, }; +static umode_t +hwm_gt_is_visible(const void *drvdata, enum hwmon_sensor_types type, + u32 attr, int channel) +{ + struct hwm_drvdata *ddat = (struct hwm_drvdata *)drvdata; + + switch (type) { + case hwmon_energy: + return hwm_energy_is_visible(ddat, attr); + default: + return 0; + } +} + +static int +hwm_gt_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, + int channel, long *val) +{ + struct hwm_drvdata *ddat = dev_get_drvdata(dev); + + switch (type) { + case hwmon_energy: + return hwm_energy_read(ddat, attr, val); + default: + return -EOPNOTSUPP; + } +} + +static const struct hwmon_ops hwm_gt_ops = { + .is_visible = hwm_gt_is_visible, + .read = hwm_gt_read, +}; + +static const struct hwmon_chip_info hwm_gt_chip_info = { + .ops = &hwm_gt_ops, + .info = hwm_gt_info, +}; + static void hwm_get_preregistration_info(struct drm_i915_private *i915) { @@ -585,7 +638,9 @@ hwm_get_preregistration_info(struct drm_i915_private *i915) struct hwm_drvdata *ddat = &hwmon->ddat; intel_wakeref_t wakeref; u32 val_sku_unit; + struct intel_gt *gt; long energy; + int i; if (IS_DG1(i915) || IS_DG2(i915)) { hwmon->rg.gt_perf_status = GEN12_RPSTAT1; @@ -593,12 +648,21 @@ hwm_get_preregistration_info(struct drm_i915_private *i915) hwmon->rg.pkg_power_sku = INVALID_MMIO_REG; hwmon->rg.pkg_rapl_limit = PCU_PACKAGE_RAPL_LIMIT; hwmon->rg.energy_status_all = PCU_PACKAGE_ENERGY_STATUS; + hwmon->rg.energy_status_tile = INVALID_MMIO_REG; + } else if (IS_XEHPSDV(i915)) { + hwmon->rg.pkg_power_sku_unit = GT0_PACKAGE_POWER_SKU_UNIT; + hwmon->rg.pkg_power_sku = INVALID_MMIO_REG; + hwmon->rg.pkg_rapl_limit = GT0_PACKAGE_RAPL_LIMIT; + hwmon->rg.energy_status_all = GT0_PLATFORM_ENERGY_STATUS; + hwmon->rg.energy_status_tile = GT0_PACKAGE_ENERGY_STATUS; + hwmon->rg.gt_perf_status = INVALID_MMIO_REG; } else { hwmon->rg.gt_perf_status = 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; hwmon->rg.energy_status_all = INVALID_MMIO_REG; + hwmon->rg.energy_status_tile = INVALID_MMIO_REG; } with_intel_runtime_pm(uncore->rpm, wakeref) { @@ -628,6 +692,10 @@ hwm_get_preregistration_info(struct drm_i915_private *i915) */ if (i915_mmio_reg_valid(hwmon->rg.energy_status_all)) hwm_energy(ddat, &energy); + if (i915_mmio_reg_valid(hwmon->rg.energy_status_tile)) { + for_each_gt(gt, i915, i) + hwm_energy(&hwmon->ddat_gt[i], &energy); + } } void i915_hwmon_register(struct drm_i915_private *i915) @@ -636,6 +704,10 @@ void i915_hwmon_register(struct drm_i915_private *i915) struct i915_hwmon *hwmon; struct device *hwmon_dev; struct hwm_drvdata *ddat; + struct hwm_drvdata *ddat_gt; + struct intel_gt *gt; + const char *ddname; + int i; /* hwmon is available only for dGfx */ if (!IS_DGFX(i915)) @@ -652,6 +724,16 @@ void i915_hwmon_register(struct drm_i915_private *i915) ddat->hwmon = hwmon; ddat->uncore = &i915->uncore; snprintf(ddat->name, sizeof(ddat->name), "i915"); + ddat->gt_n = -1; + + for_each_gt(gt, i915, i) { + ddat_gt = hwmon->ddat_gt + i; + + ddat_gt->hwmon = hwmon; + ddat_gt->uncore = gt->uncore; + snprintf(ddat_gt->name, sizeof(ddat_gt->name), "i915_gt%u", i); + ddat_gt->gt_n = i; + } hwm_get_preregistration_info(i915); @@ -668,18 +750,50 @@ void i915_hwmon_register(struct drm_i915_private *i915) } ddat->hwmon_dev = hwmon_dev; + + for_each_gt(gt, i915, i) { + ddat_gt = hwmon->ddat_gt + i; + /* + * Create per-gt directories only if a per-gt attribute is + * visible. Currently this is only energy + */ + if (!hwm_gt_is_visible(ddat_gt, hwmon_energy, hwmon_energy_input, 0)) + continue; + + ddname = ddat_gt->name; + hwmon_dev = hwmon_device_register_with_info(dev, ddname, + ddat_gt, + &hwm_gt_chip_info, + NULL); + if (!IS_ERR(hwmon_dev)) + ddat_gt->hwmon_dev = hwmon_dev; + } } void i915_hwmon_unregister(struct drm_i915_private *i915) { struct i915_hwmon *hwmon; struct hwm_drvdata *ddat; + struct intel_gt *gt; + int i; hwmon = fetch_and_zero(&i915->hwmon); if (!hwmon) return; ddat = &hwmon->ddat; + + for_each_gt(gt, i915, i) { + struct hwm_drvdata *ddat_gt; + + ddat_gt = hwmon->ddat_gt + i; + + if (ddat_gt->hwmon_dev) { + hwmon_device_unregister(ddat_gt->hwmon_dev); + ddat_gt->hwmon_dev = NULL; + } + } + if (ddat->hwmon_dev) hwmon_device_unregister(ddat->hwmon_dev);