diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index f68d62d2bbea..9801aaa9885d 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -106,6 +106,7 @@ gt-y += \ gt/intel_gt_pm_irq.o \ gt/intel_gt_requests.o \ gt/intel_gt_sysfs.o \ + gt/intel_gt_sysfs_pm.o \ gt/intel_gtt.o \ gt/intel_llc.o \ gt/intel_lrc.o \ diff --git a/drivers/gpu/drm/i915/gt/intel_gt_sysfs.c b/drivers/gpu/drm/i915/gt/intel_gt_sysfs.c index d50831961294..8ec8bc660c8c 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_sysfs.c +++ b/drivers/gpu/drm/i915/gt/intel_gt_sysfs.c @@ -13,6 +13,7 @@ #include "i915_sysfs.h" #include "intel_gt.h" #include "intel_gt_sysfs.h" +#include "intel_gt_sysfs_pm.h" #include "intel_gt_types.h" #include "intel_rc6.h" @@ -50,6 +51,11 @@ struct intel_gt *intel_gt_sysfs_get_drvdata(struct device *dev, return kobj_to_gt(kobj); } +static struct kobject *gt_get_parent_obj(struct intel_gt *gt) +{ + return >->i915->drm.primary->kdev->kobj; +} + static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -81,6 +87,17 @@ void intel_gt_sysfs_register(struct intel_gt *gt) { struct kobj_gt *kg; + /* + * We need to make things right with the + * ABI compatibility. The files were originally + * generated under the parent directory. + * + * We generate the files only for gt 0 + * to avoid duplicates. + */ + if (gt_is_root(gt)) + intel_gt_sysfs_pm_init(gt, gt_get_parent_obj(gt)); + kg = kzalloc(sizeof(*kg), GFP_KERNEL); if (!kg) goto exit_fail; @@ -92,6 +109,8 @@ void intel_gt_sysfs_register(struct intel_gt *gt) if (kobject_add(&kg->base, gt->i915->sysfs_gt, "gt%d", gt->info.id)) goto exit_kobj_put; + intel_gt_sysfs_pm_init(gt, &kg->base); + return; exit_kobj_put: diff --git a/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c b/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c new file mode 100644 index 000000000000..144b004e4de8 --- /dev/null +++ b/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c @@ -0,0 +1,244 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2022 Intel Corporation + */ + +#include +#include +#include + +#include "i915_drv.h" +#include "i915_sysfs.h" +#include "intel_gt.h" +#include "intel_gt_regs.h" +#include "intel_gt_sysfs.h" +#include "intel_gt_sysfs_pm.h" +#include "intel_rc6.h" + +#ifdef CONFIG_PM +enum intel_gt_sysfs_op { + INTEL_GT_SYSFS_MIN = 0, + INTEL_GT_SYSFS_MAX, +}; + +static u32 +sysfs_gt_attribute_r_func(struct device *dev, struct device_attribute *attr, + u32 (func)(struct intel_gt *gt), + enum intel_gt_sysfs_op op) +{ + struct intel_gt *gt; + u32 ret; + + ret = (op == INTEL_GT_SYSFS_MAX) ? 0 : (u32) -1; + + if (!is_object_gt(&dev->kobj)) { + int i; + struct drm_i915_private *i915 = kdev_minor_to_i915(dev); + + for_each_gt(gt, i915, i) { + u32 val = func(gt); + + switch (op) { + case INTEL_GT_SYSFS_MIN: + if (val < ret) + ret = val; + break; + + case INTEL_GT_SYSFS_MAX: + if (val > ret) + ret = val; + break; + } + } + } else { + gt = intel_gt_sysfs_get_drvdata(dev, attr->attr.name); + ret = func(gt); + } + + return ret; +} + +/* RC6 interfaces will show the minimum RC6 residency value */ +#define sysfs_gt_attribute_r_min_func(d, a, f) \ + sysfs_gt_attribute_r_func(d, a, f, INTEL_GT_SYSFS_MIN) + +#define sysfs_gt_attribute_r_max_func(d, a, f) \ + sysfs_gt_attribute_r_func(d, a, f, INTEL_GT_SYSFS_MAX) + +static u32 get_residency(struct intel_gt *gt, i915_reg_t reg) +{ + intel_wakeref_t wakeref; + u64 res = 0; + + with_intel_runtime_pm(gt->uncore->rpm, wakeref) + res = intel_rc6_residency_us(>->rc6, reg); + + return DIV_ROUND_CLOSEST_ULL(res, 1000); +} + +static ssize_t rc6_enable_show(struct device *dev, + struct device_attribute *attr, + char *buff) +{ + struct intel_gt *gt = intel_gt_sysfs_get_drvdata(dev, attr->attr.name); + u8 mask = 0; + + if (HAS_RC6(gt->i915)) + mask |= BIT(0); + if (HAS_RC6p(gt->i915)) + mask |= BIT(1); + if (HAS_RC6pp(gt->i915)) + mask |= BIT(2); + + return sysfs_emit(buff, "%x\n", mask); +} + +static u32 __rc6_residency_ms_show(struct intel_gt *gt) +{ + return get_residency(gt, GEN6_GT_GFX_RC6); +} + +static ssize_t rc6_residency_ms_show(struct device *dev, + struct device_attribute *attr, + char *buff) +{ + u32 rc6_residency = sysfs_gt_attribute_r_min_func(dev, attr, + __rc6_residency_ms_show); + + return sysfs_emit(buff, "%u\n", rc6_residency); +} + +static u32 __rc6p_residency_ms_show(struct intel_gt *gt) +{ + return get_residency(gt, GEN6_GT_GFX_RC6p); +} + +static ssize_t rc6p_residency_ms_show(struct device *dev, + struct device_attribute *attr, + char *buff) +{ + u32 rc6p_residency = sysfs_gt_attribute_r_min_func(dev, attr, + __rc6p_residency_ms_show); + + return sysfs_emit(buff, "%u\n", rc6p_residency); +} + +static u32 __rc6pp_residency_ms_show(struct intel_gt *gt) +{ + return get_residency(gt, GEN6_GT_GFX_RC6pp); +} + +static ssize_t rc6pp_residency_ms_show(struct device *dev, + struct device_attribute *attr, + char *buff) +{ + u32 rc6pp_residency = sysfs_gt_attribute_r_min_func(dev, attr, + __rc6pp_residency_ms_show); + + return sysfs_emit(buff, "%u\n", rc6pp_residency); +} + +static u32 __media_rc6_residency_ms_show(struct intel_gt *gt) +{ + return get_residency(gt, VLV_GT_MEDIA_RC6); +} + +static ssize_t media_rc6_residency_ms_show(struct device *dev, + struct device_attribute *attr, + char *buff) +{ + u32 rc6_residency = sysfs_gt_attribute_r_min_func(dev, attr, + __media_rc6_residency_ms_show); + + return sysfs_emit(buff, "%u\n", rc6_residency); +} + +static DEVICE_ATTR_RO(rc6_enable); +static DEVICE_ATTR_RO(rc6_residency_ms); +static DEVICE_ATTR_RO(rc6p_residency_ms); +static DEVICE_ATTR_RO(rc6pp_residency_ms); +static DEVICE_ATTR_RO(media_rc6_residency_ms); + +static struct attribute *rc6_attrs[] = { + &dev_attr_rc6_enable.attr, + &dev_attr_rc6_residency_ms.attr, + NULL +}; + +static struct attribute *rc6p_attrs[] = { + &dev_attr_rc6p_residency_ms.attr, + &dev_attr_rc6pp_residency_ms.attr, + NULL +}; + +static struct attribute *media_rc6_attrs[] = { + &dev_attr_media_rc6_residency_ms.attr, + NULL +}; + +static const struct attribute_group rc6_attr_group[] = { + { .attrs = rc6_attrs, }, + { .name = power_group_name, .attrs = rc6_attrs, }, +}; + +static const struct attribute_group rc6p_attr_group[] = { + { .attrs = rc6p_attrs, }, + { .name = power_group_name, .attrs = rc6p_attrs, }, +}; + +static const struct attribute_group media_rc6_attr_group[] = { + { .attrs = media_rc6_attrs, }, + { .name = power_group_name, .attrs = media_rc6_attrs, }, +}; + +static int __intel_gt_sysfs_create_group(struct kobject *kobj, + const struct attribute_group *grp) +{ + return is_object_gt(kobj) ? + sysfs_create_group(kobj, &grp[0]) : + sysfs_merge_group(kobj, &grp[1]); +} + +static void intel_sysfs_rc6_init(struct intel_gt *gt, struct kobject *kobj) +{ + int ret; + + if (!HAS_RC6(gt->i915)) + return; + + ret = __intel_gt_sysfs_create_group(kobj, rc6_attr_group); + if (ret) + drm_warn(>->i915->drm, + "failed to create gt%u RC6 sysfs files (%pe)\n", + gt->info.id, ERR_PTR(ret)); + + /* + * cannot use the is_visible() attribute because + * the upper object inherits from the parent group. + */ + if (HAS_RC6p(gt->i915)) { + ret = __intel_gt_sysfs_create_group(kobj, rc6p_attr_group); + if (ret) + drm_warn(>->i915->drm, + "failed to create gt%u RC6p sysfs files (%pe)\n", + gt->info.id, ERR_PTR(ret)); + } + + if (IS_VALLEYVIEW(gt->i915) || IS_CHERRYVIEW(gt->i915)) { + ret = __intel_gt_sysfs_create_group(kobj, media_rc6_attr_group); + if (ret) + drm_warn(>->i915->drm, + "failed to create media %u RC6 sysfs files (%pe)\n", + gt->info.id, ERR_PTR(ret)); + } +} +#else +static void intel_sysfs_rc6_init(struct intel_gt *gt, struct kobject *kobj) +{ +} +#endif /* CONFIG_PM */ + +void intel_gt_sysfs_pm_init(struct intel_gt *gt, struct kobject *kobj) +{ + intel_sysfs_rc6_init(gt, kobj); +} diff --git a/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.h b/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.h new file mode 100644 index 000000000000..f567105a4a89 --- /dev/null +++ b/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2022 Intel Corporation + */ + +#ifndef __SYSFS_GT_PM_H__ +#define __SYSFS_GT_PM_H__ + +#include + +#include "intel_gt_types.h" + +void intel_gt_sysfs_pm_init(struct intel_gt *gt, struct kobject *kobj); + +#endif /* SYSFS_RC6_H */ diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c index 5ff915b93c21..2c5d62a521f6 100644 --- a/drivers/gpu/drm/i915/i915_sysfs.c +++ b/drivers/gpu/drm/i915/i915_sysfs.c @@ -45,107 +45,6 @@ struct drm_i915_private *kdev_minor_to_i915(struct device *kdev) return to_i915(minor->dev); } -#ifdef CONFIG_PM -static u32 calc_residency(struct drm_i915_private *dev_priv, - i915_reg_t reg) -{ - intel_wakeref_t wakeref; - u64 res = 0; - - with_intel_runtime_pm(&dev_priv->runtime_pm, wakeref) - res = intel_rc6_residency_us(&to_gt(dev_priv)->rc6, reg); - - return DIV_ROUND_CLOSEST_ULL(res, 1000); -} - -static ssize_t rc6_enable_show(struct device *kdev, - struct device_attribute *attr, char *buf) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - unsigned int mask; - - mask = 0; - if (HAS_RC6(dev_priv)) - mask |= BIT(0); - if (HAS_RC6p(dev_priv)) - mask |= BIT(1); - if (HAS_RC6pp(dev_priv)) - mask |= BIT(2); - - return sysfs_emit(buf, "%x\n", mask); -} - -static ssize_t rc6_residency_ms_show(struct device *kdev, - struct device_attribute *attr, char *buf) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - u32 rc6_residency = calc_residency(dev_priv, GEN6_GT_GFX_RC6); - return sysfs_emit(buf, "%u\n", rc6_residency); -} - -static ssize_t rc6p_residency_ms_show(struct device *kdev, - struct device_attribute *attr, char *buf) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - u32 rc6p_residency = calc_residency(dev_priv, GEN6_GT_GFX_RC6p); - return sysfs_emit(buf, "%u\n", rc6p_residency); -} - -static ssize_t rc6pp_residency_ms_show(struct device *kdev, - struct device_attribute *attr, char *buf) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - u32 rc6pp_residency = calc_residency(dev_priv, GEN6_GT_GFX_RC6pp); - return sysfs_emit(buf, "%u\n", rc6pp_residency); -} - -static ssize_t media_rc6_residency_ms_show(struct device *kdev, - struct device_attribute *attr, char *buf) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - u32 rc6_residency = calc_residency(dev_priv, VLV_GT_MEDIA_RC6); - return sysfs_emit(buf, "%u\n", rc6_residency); -} - -static DEVICE_ATTR_RO(rc6_enable); -static DEVICE_ATTR_RO(rc6_residency_ms); -static DEVICE_ATTR_RO(rc6p_residency_ms); -static DEVICE_ATTR_RO(rc6pp_residency_ms); -static DEVICE_ATTR_RO(media_rc6_residency_ms); - -static struct attribute *rc6_attrs[] = { - &dev_attr_rc6_enable.attr, - &dev_attr_rc6_residency_ms.attr, - NULL -}; - -static const struct attribute_group rc6_attr_group = { - .name = power_group_name, - .attrs = rc6_attrs -}; - -static struct attribute *rc6p_attrs[] = { - &dev_attr_rc6p_residency_ms.attr, - &dev_attr_rc6pp_residency_ms.attr, - NULL -}; - -static const struct attribute_group rc6p_attr_group = { - .name = power_group_name, - .attrs = rc6p_attrs -}; - -static struct attribute *media_rc6_attrs[] = { - &dev_attr_media_rc6_residency_ms.attr, - NULL -}; - -static const struct attribute_group media_rc6_attr_group = { - .name = power_group_name, - .attrs = media_rc6_attrs -}; -#endif - static int l3_access_valid(struct drm_i915_private *i915, loff_t offset) { if (!HAS_L3_DPF(i915)) @@ -492,29 +391,6 @@ void i915_setup_sysfs(struct drm_i915_private *dev_priv) struct device *kdev = dev_priv->drm.primary->kdev; int ret; -#ifdef CONFIG_PM - if (HAS_RC6(dev_priv)) { - ret = sysfs_merge_group(&kdev->kobj, - &rc6_attr_group); - if (ret) - drm_err(&dev_priv->drm, - "RC6 residency sysfs setup failed\n"); - } - if (HAS_RC6p(dev_priv)) { - ret = sysfs_merge_group(&kdev->kobj, - &rc6p_attr_group); - if (ret) - drm_err(&dev_priv->drm, - "RC6p residency sysfs setup failed\n"); - } - if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { - ret = sysfs_merge_group(&kdev->kobj, - &media_rc6_attr_group); - if (ret) - drm_err(&dev_priv->drm, - "Media RC6 residency sysfs setup failed\n"); - } -#endif if (HAS_L3_DPF(dev_priv)) { ret = device_create_bin_file(kdev, &dpf_attrs); if (ret) @@ -560,8 +436,4 @@ void i915_teardown_sysfs(struct drm_i915_private *dev_priv) sysfs_remove_files(&kdev->kobj, gen6_attrs); device_remove_bin_file(kdev, &dpf_attrs_1); device_remove_bin_file(kdev, &dpf_attrs); -#ifdef CONFIG_PM - sysfs_unmerge_group(&kdev->kobj, &rc6_attr_group); - sysfs_unmerge_group(&kdev->kobj, &rc6p_attr_group); -#endif }