drm/i915/guc/slpc: Sysfs hooks for SLPC
Update the get/set min/max freq hooks to work for
SLPC case as well. Consolidate helpers for requested/min/max
frequency get/set to intel_rps where the proper action can
be taken depending on whether SLPC is enabled.
v2: Add wrappers for getting rp0/1/n frequencies, update
softlimits in set min/max SLPC functions. Also check for
boundary conditions before setting them.
v3: Address review comments (Michal W)
v4: Add helper for host part of intel_rps_set_freq helpers (Michal W)
v5: checkpatch()
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Acked-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Signed-off-by: Sujaritha Sundaresan <sujaritha.sundaresan@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210730202119.23810-13-vinay.belgaumkar@intel.com
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
index 873bf99..cdf0e9c 100644
--- a/drivers/gpu/drm/i915/i915_sysfs.c
+++ b/drivers/gpu/drm/i915/i915_sysfs.c
@@ -272,7 +272,7 @@ static ssize_t gt_cur_freq_mhz_show(struct device *kdev,
struct drm_i915_private *i915 = kdev_minor_to_i915(kdev);
struct intel_rps *rps = &i915->gt.rps;
- return sysfs_emit(buf, "%d\n", intel_gpu_freq(rps, rps->cur_freq));
+ return sysfs_emit(buf, "%d\n", intel_rps_get_requested_frequency(rps));
}
static ssize_t gt_boost_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf)
@@ -326,9 +326,10 @@ static ssize_t vlv_rpe_freq_mhz_show(struct device *kdev,
static ssize_t gt_max_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf)
{
struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
- struct intel_rps *rps = &dev_priv->gt.rps;
+ struct intel_gt *gt = &dev_priv->gt;
+ struct intel_rps *rps = >->rps;
- return sysfs_emit(buf, "%d\n", intel_gpu_freq(rps, rps->max_freq_softlimit));
+ return sysfs_emit(buf, "%d\n", intel_rps_get_max_frequency(rps));
}
static ssize_t gt_max_freq_mhz_store(struct device *kdev,
@@ -336,7 +337,8 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
const char *buf, size_t count)
{
struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
- struct intel_rps *rps = &dev_priv->gt.rps;
+ struct intel_gt *gt = &dev_priv->gt;
+ struct intel_rps *rps = >->rps;
ssize_t ret;
u32 val;
@@ -344,53 +346,26 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
if (ret)
return ret;
- mutex_lock(&rps->lock);
-
- val = intel_freq_opcode(rps, val);
- if (val < rps->min_freq ||
- val > rps->max_freq ||
- val < rps->min_freq_softlimit) {
- ret = -EINVAL;
- goto unlock;
- }
-
- if (val > rps->rp0_freq)
- DRM_DEBUG("User requested overclocking to %d\n",
- intel_gpu_freq(rps, val));
-
- rps->max_freq_softlimit = val;
-
- val = clamp_t(int, rps->cur_freq,
- rps->min_freq_softlimit,
- rps->max_freq_softlimit);
-
- /*
- * We still need *_set_rps to process the new max_delay and
- * update the interrupt limits and PMINTRMSK even though
- * frequency request may be unchanged.
- */
- intel_rps_set(rps, val);
-
-unlock:
- mutex_unlock(&rps->lock);
+ ret = intel_rps_set_max_frequency(rps, val);
return ret ?: count;
}
static ssize_t gt_min_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf)
{
- struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
- struct intel_rps *rps = &dev_priv->gt.rps;
+ struct drm_i915_private *i915 = kdev_minor_to_i915(kdev);
+ struct intel_gt *gt = &i915->gt;
+ struct intel_rps *rps = >->rps;
- return sysfs_emit(buf, "%d\n", intel_gpu_freq(rps, rps->min_freq_softlimit));
+ return sysfs_emit(buf, "%d\n", intel_rps_get_min_frequency(rps));
}
static ssize_t gt_min_freq_mhz_store(struct device *kdev,
struct device_attribute *attr,
const char *buf, size_t count)
{
- struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
- struct intel_rps *rps = &dev_priv->gt.rps;
+ struct drm_i915_private *i915 = kdev_minor_to_i915(kdev);
+ struct intel_rps *rps = &i915->gt.rps;
ssize_t ret;
u32 val;
@@ -398,31 +373,7 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
if (ret)
return ret;
- mutex_lock(&rps->lock);
-
- val = intel_freq_opcode(rps, val);
- if (val < rps->min_freq ||
- val > rps->max_freq ||
- val > rps->max_freq_softlimit) {
- ret = -EINVAL;
- goto unlock;
- }
-
- rps->min_freq_softlimit = val;
-
- val = clamp_t(int, rps->cur_freq,
- rps->min_freq_softlimit,
- rps->max_freq_softlimit);
-
- /*
- * We still need *_set_rps to process the new min_delay and
- * update the interrupt limits and PMINTRMSK even though
- * frequency request may be unchanged.
- */
- intel_rps_set(rps, val);
-
-unlock:
- mutex_unlock(&rps->lock);
+ ret = intel_rps_set_min_frequency(rps, val);
return ret ?: count;
}
@@ -448,11 +399,11 @@ static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr
u32 val;
if (attr == &dev_attr_gt_RP0_freq_mhz)
- val = intel_gpu_freq(rps, rps->rp0_freq);
+ val = intel_rps_get_rp0_frequency(rps);
else if (attr == &dev_attr_gt_RP1_freq_mhz)
- val = intel_gpu_freq(rps, rps->rp1_freq);
+ val = intel_rps_get_rp1_frequency(rps);
else if (attr == &dev_attr_gt_RPn_freq_mhz)
- val = intel_gpu_freq(rps, rps->min_freq);
+ val = intel_rps_get_rpn_frequency(rps);
else
BUG();