[Intel-gfx] [PATCH 9/9] drm/i915/gt: Expose default value for media_freq_factor in per-gt sysfs

[Ashutosh Dixit]

Add the following sysfs file to gt/gtN/.defaults:
* media_freq_factor

Cc: Joonas Lahtinen <joonas.lahti...@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.v...@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.di...@intel.com>
---
 drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c | 18 ++++++++++++++++++
 drivers/gpu/drm/i915/gt/intel_gt_types.h    |  1 +
 drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c |  2 ++
 3 files changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c 
b/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c
index 2b9024cf1d78..1953b085bd83 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c
@@ -759,6 +759,18 @@ default_boost_freq_mhz_show(struct kobject *kobj, struct 
kobj_attribute *attr, c
 static struct kobj_attribute default_boost_freq_mhz =
 __ATTR(rps_boost_freq_mhz, 0444, default_boost_freq_mhz_show, NULL);
 
+static ssize_t
+default_media_freq_factor_show(struct kobject *kobj, struct kobj_attribute 
*attr, char *buf)
+{
+       struct intel_gt *gt = kobj_to_gt(kobj->parent);
+
+       return sysfs_emit(buf, "%d\n",
+                         
media_ratio_mode_to_factor(gt->rps_defaults.media_ratio_mode));
+}
+
+static struct kobj_attribute default_media_freq_factor =
+__ATTR(media_freq_factor, 0444, default_media_freq_factor_show, NULL);
+
 static const struct attribute * const rps_defaults_attrs[] = {
        &default_min_freq_mhz.attr,
        &default_max_freq_mhz.attr,
@@ -819,6 +831,12 @@ void intel_gt_sysfs_pm_init(struct intel_gt *gt, struct 
kobject *kobj)
                        drm_warn(&gt->i915->drm,
                                 "failed to create add gt%u 
media_perf_power_attrs sysfs (%pe)\n",
                                 gt->info.id, ERR_PTR(ret));
+
+               ret = sysfs_create_file(gt->sysfs_defaults, 
&default_media_freq_factor.attr);
+               if (ret)
+                       drm_warn(&gt->i915->drm,
+                                "failed to add gt%u default_media_freq_factor 
sysfs (%pe)\n",
+                                gt->info.id, ERR_PTR(ret));
        }
 
        ret = add_rps_defaults(gt);
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_types.h 
b/drivers/gpu/drm/i915/gt/intel_gt_types.h
index 8ad872c9751a..fe502534113b 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_gt_types.h
@@ -65,6 +65,7 @@ struct intel_rps_defaults {
        u32 min_freq;
        u32 max_freq;
        u32 boost_freq;
+       u32 media_ratio_mode;
 };
 
 enum intel_submission_method {
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c 
b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
index cefd864c84eb..047c80838fcd 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
@@ -260,7 +260,9 @@ int intel_guc_slpc_init(struct intel_guc_slpc *slpc)
        slpc->boost_freq = 0;
        atomic_set(&slpc->num_waiters, 0);
        slpc->num_boosts = 0;
+
        slpc->media_ratio_mode = SLPC_MEDIA_RATIO_MODE_DYNAMIC_CONTROL;
+       slpc_to_gt(slpc)->rps_defaults.media_ratio_mode = 
slpc->media_ratio_mode;
 
        mutex_init(&slpc->lock);
        INIT_WORK(&slpc->boost_work, slpc_boost_work);
-- 
2.34.1