diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_hwmon.c')
-rw-r--r-- | drivers/gpu/drm/i915/i915_hwmon.c | 89 |
1 files changed, 51 insertions, 38 deletions
diff --git a/drivers/gpu/drm/i915/i915_hwmon.c b/drivers/gpu/drm/i915/i915_hwmon.c index 8c3f443c8347..49db3e09826c 100644 --- a/drivers/gpu/drm/i915/i915_hwmon.c +++ b/drivers/gpu/drm/i915/i915_hwmon.c @@ -72,12 +72,13 @@ hwm_locked_with_pm_intel_uncore_rmw(struct hwm_drvdata *ddat, struct intel_uncore *uncore = ddat->uncore; intel_wakeref_t wakeref; - mutex_lock(&hwmon->hwmon_lock); + with_intel_runtime_pm(uncore->rpm, wakeref) { + mutex_lock(&hwmon->hwmon_lock); - with_intel_runtime_pm(uncore->rpm, wakeref) intel_uncore_rmw(uncore, reg, clear, set); - mutex_unlock(&hwmon->hwmon_lock); + mutex_unlock(&hwmon->hwmon_lock); + } } /* @@ -136,20 +137,21 @@ hwm_energy(struct hwm_drvdata *ddat, long *energy) else rgaddr = hwmon->rg.energy_status_all; - mutex_lock(&hwmon->hwmon_lock); + with_intel_runtime_pm(uncore->rpm, wakeref) { + mutex_lock(&hwmon->hwmon_lock); - with_intel_runtime_pm(uncore->rpm, wakeref) reg_val = intel_uncore_read(uncore, rgaddr); - if (reg_val >= ei->reg_val_prev) - ei->accum_energy += reg_val - ei->reg_val_prev; - else - ei->accum_energy += UINT_MAX - ei->reg_val_prev + reg_val; - ei->reg_val_prev = reg_val; + if (reg_val >= ei->reg_val_prev) + ei->accum_energy += reg_val - ei->reg_val_prev; + else + ei->accum_energy += UINT_MAX - ei->reg_val_prev + reg_val; + ei->reg_val_prev = reg_val; - *energy = mul_u64_u32_shr(ei->accum_energy, SF_ENERGY, - hwmon->scl_shift_energy); - mutex_unlock(&hwmon->hwmon_lock); + *energy = mul_u64_u32_shr(ei->accum_energy, SF_ENERGY, + hwmon->scl_shift_energy); + mutex_unlock(&hwmon->hwmon_lock); + } } static ssize_t @@ -404,6 +406,7 @@ hwm_power_max_write(struct hwm_drvdata *ddat, long val) /* Block waiting for GuC reset to complete when needed */ for (;;) { + wakeref = intel_runtime_pm_get(ddat->uncore->rpm); mutex_lock(&hwmon->hwmon_lock); prepare_to_wait(&ddat->waitq, &wait, TASK_INTERRUPTIBLE); @@ -417,14 +420,13 @@ hwm_power_max_write(struct hwm_drvdata *ddat, long val) } mutex_unlock(&hwmon->hwmon_lock); + intel_runtime_pm_put(ddat->uncore->rpm, wakeref); schedule(); } finish_wait(&ddat->waitq, &wait); if (ret) - goto unlock; - - wakeref = intel_runtime_pm_get(ddat->uncore->rpm); + goto exit; /* Disable PL1 limit and verify, because the limit cannot be disabled on all platforms */ if (val == PL1_DISABLE) { @@ -444,9 +446,8 @@ hwm_power_max_write(struct hwm_drvdata *ddat, long val) intel_uncore_rmw(ddat->uncore, hwmon->rg.pkg_rapl_limit, PKG_PWR_LIM_1_EN | PKG_PWR_LIM_1, nval); exit: - intel_runtime_pm_put(ddat->uncore->rpm, wakeref); -unlock: mutex_unlock(&hwmon->hwmon_lock); + intel_runtime_pm_put(ddat->uncore->rpm, wakeref); return ret; } @@ -738,12 +739,6 @@ hwm_get_preregistration_info(struct drm_i915_private *i915) 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; } else { hwmon->rg.pkg_power_sku_unit = INVALID_MMIO_REG; hwmon->rg.pkg_power_sku = INVALID_MMIO_REG; @@ -792,7 +787,7 @@ void i915_hwmon_register(struct drm_i915_private *i915) if (!IS_DGFX(i915)) return; - hwmon = devm_kzalloc(dev, sizeof(*hwmon), GFP_KERNEL); + hwmon = kzalloc(sizeof(*hwmon), GFP_KERNEL); if (!hwmon) return; @@ -818,14 +813,12 @@ void i915_hwmon_register(struct drm_i915_private *i915) hwm_get_preregistration_info(i915); /* hwmon_dev points to device hwmon<i> */ - hwmon_dev = devm_hwmon_device_register_with_info(dev, ddat->name, - ddat, - &hwm_chip_info, - hwm_groups); - if (IS_ERR(hwmon_dev)) { - i915->hwmon = NULL; - return; - } + hwmon_dev = hwmon_device_register_with_info(dev, ddat->name, + ddat, + &hwm_chip_info, + hwm_groups); + if (IS_ERR(hwmon_dev)) + goto err; ddat->hwmon_dev = hwmon_dev; @@ -838,16 +831,36 @@ void i915_hwmon_register(struct drm_i915_private *i915) if (!hwm_gt_is_visible(ddat_gt, hwmon_energy, hwmon_energy_input, 0)) continue; - hwmon_dev = devm_hwmon_device_register_with_info(dev, ddat_gt->name, - ddat_gt, - &hwm_gt_chip_info, - NULL); + hwmon_dev = hwmon_device_register_with_info(dev, ddat_gt->name, + ddat_gt, + &hwm_gt_chip_info, + NULL); if (!IS_ERR(hwmon_dev)) ddat_gt->hwmon_dev = hwmon_dev; } + return; +err: + i915_hwmon_unregister(i915); } void i915_hwmon_unregister(struct drm_i915_private *i915) { - fetch_and_zero(&i915->hwmon); + struct i915_hwmon *hwmon = i915->hwmon; + struct intel_gt *gt; + int i; + + if (!hwmon) + return; + + for_each_gt(gt, i915, i) + if (hwmon->ddat_gt[i].hwmon_dev) + hwmon_device_unregister(hwmon->ddat_gt[i].hwmon_dev); + + if (hwmon->ddat.hwmon_dev) + hwmon_device_unregister(hwmon->ddat.hwmon_dev); + + mutex_destroy(&hwmon->hwmon_lock); + + kfree(i915->hwmon); + i915->hwmon = NULL; } |