--- /dev/null
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#include <drm/drm_device.h>
+#include <linux/sysfs.h>
+#include <linux/printk.h>
+
+#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);
+}
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))
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)
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
}
projects / platform / kernel / linux-starfive.git / commitdiff