[PATCH 14/16] drm/i915/guc/slpc: Sysfs hooks for slpc
Vinay Belgaumkar
vinay.belgaumkar at intel.com
Sat Jul 10 01:20:24 UTC 2021
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.
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar at intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at linux.intel.com>
Signed-off-by: Sujaritha Sundaresan <sujaritha.sundaresan at intel.com>
---
drivers/gpu/drm/i915/gt/intel_rps.c | 135 ++++++++++++++++++++++++++++
drivers/gpu/drm/i915/gt/intel_rps.h | 5 ++
drivers/gpu/drm/i915/i915_pmu.c | 2 +-
drivers/gpu/drm/i915/i915_reg.h | 2 +
drivers/gpu/drm/i915/i915_sysfs.c | 71 +++------------
5 files changed, 154 insertions(+), 61 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_rps.c b/drivers/gpu/drm/i915/gt/intel_rps.c
index e858eeb2c59d..88ffc5d90730 100644
--- a/drivers/gpu/drm/i915/gt/intel_rps.c
+++ b/drivers/gpu/drm/i915/gt/intel_rps.c
@@ -37,6 +37,12 @@ static struct intel_uncore *rps_to_uncore(struct intel_rps *rps)
return rps_to_gt(rps)->uncore;
}
+static struct intel_guc_slpc *rps_to_slpc(struct intel_rps *rps)
+{
+ struct intel_gt *gt = rps_to_gt(rps);
+ return >->uc.guc.slpc;
+}
+
static bool rps_uses_slpc(struct intel_rps *rps)
{
struct intel_gt *gt = rps_to_gt(rps);
@@ -1960,6 +1966,135 @@ u32 intel_rps_read_actual_frequency(struct intel_rps *rps)
return freq;
}
+u32 intel_rps_read_punit_req(struct intel_rps *rps)
+{
+ struct intel_uncore *uncore = rps_to_uncore(rps);
+
+ u32 pureq = intel_uncore_read(uncore, GEN6_RPNSWREQ);
+
+ return pureq;
+}
+
+u32 intel_rps_get_req(struct intel_rps *rps, u32 pureq)
+{
+ u32 req = pureq >> GEN9_SW_REQ_UNSLICE_RATIO_SHIFT;
+
+ return req;
+}
+
+u32 intel_rps_read_punit_req_frequency(struct intel_rps *rps)
+{
+ u32 freq = intel_rps_get_req(rps, intel_rps_read_punit_req(rps));
+
+ return intel_gpu_freq(rps, freq);
+}
+
+u32 intel_rps_get_requested_frequency(struct intel_rps *rps)
+{
+ if (rps_uses_slpc(rps))
+ return intel_rps_read_punit_req_frequency(rps);
+ else
+ return intel_gpu_freq(rps, rps->cur_freq);
+}
+
+u32 intel_rps_get_max_frequency(struct intel_rps *rps)
+{
+ struct intel_guc_slpc *slpc = rps_to_slpc(rps);
+
+ if (rps_uses_slpc(rps))
+ return slpc->max_freq_softlimit;
+ else
+ return intel_gpu_freq(rps, rps->max_freq_softlimit);
+}
+
+int intel_rps_set_max_frequency(struct intel_rps *rps, u32 val)
+{
+ struct intel_guc_slpc *slpc = rps_to_slpc(rps);
+ int ret;
+
+ if (rps_uses_slpc(rps))
+ return intel_guc_slpc_set_max_freq(slpc, val);
+
+ 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);
+
+ return ret;
+}
+
+u32 intel_rps_get_min_frequency(struct intel_rps *rps)
+{
+ struct intel_guc_slpc *slpc = rps_to_slpc(rps);
+
+ if (rps_uses_slpc(rps))
+ return slpc->min_freq_softlimit;
+ else
+ return intel_gpu_freq(rps, rps->min_freq_softlimit);
+}
+
+int intel_rps_set_min_frequency(struct intel_rps *rps, u32 val)
+{
+ struct intel_guc_slpc *slpc = rps_to_slpc(rps);
+ int ret;
+
+ if (rps_uses_slpc(rps))
+ return intel_guc_slpc_set_min_freq(slpc, val);
+
+ 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);
+
+ return ret;
+}
+
/* External interface for intel_ips.ko */
static struct drm_i915_private __rcu *ips_mchdev;
diff --git a/drivers/gpu/drm/i915/gt/intel_rps.h b/drivers/gpu/drm/i915/gt/intel_rps.h
index 1d2cfc98b510..9a09ff5ebf64 100644
--- a/drivers/gpu/drm/i915/gt/intel_rps.h
+++ b/drivers/gpu/drm/i915/gt/intel_rps.h
@@ -31,6 +31,11 @@ int intel_gpu_freq(struct intel_rps *rps, int val);
int intel_freq_opcode(struct intel_rps *rps, int val);
u32 intel_rps_get_cagf(struct intel_rps *rps, u32 rpstat1);
u32 intel_rps_read_actual_frequency(struct intel_rps *rps);
+u32 intel_rps_get_requested_frequency(struct intel_rps *rps);
+u32 intel_rps_get_min_frequency(struct intel_rps *rps);
+int intel_rps_set_min_frequency(struct intel_rps *rps, u32 val);
+u32 intel_rps_get_max_frequency(struct intel_rps *rps);
+int intel_rps_set_max_frequency(struct intel_rps *rps, u32 val);
void gen5_rps_irq_handler(struct intel_rps *rps);
void gen6_rps_irq_handler(struct intel_rps *rps, u32 pm_iir);
diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c
index 34d37d46a126..a896bec18255 100644
--- a/drivers/gpu/drm/i915/i915_pmu.c
+++ b/drivers/gpu/drm/i915/i915_pmu.c
@@ -407,7 +407,7 @@ frequency_sample(struct intel_gt *gt, unsigned int period_ns)
if (pmu->enable & config_mask(I915_PMU_REQUESTED_FREQUENCY)) {
add_sample_mult(&pmu->sample[__I915_SAMPLE_FREQ_REQ],
- intel_gpu_freq(rps, rps->cur_freq),
+ intel_rps_get_requested_frequency(rps),
period_ns / 1000);
}
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 7d9e90aa3ec0..8ab3c2f8f8e4 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -9195,6 +9195,8 @@ enum {
#define GEN9_FREQUENCY(x) ((x) << 23)
#define GEN6_OFFSET(x) ((x) << 19)
#define GEN6_AGGRESSIVE_TURBO (0 << 15)
+#define GEN9_SW_REQ_UNSLICE_RATIO_SHIFT 23
+
#define GEN6_RC_VIDEO_FREQ _MMIO(0xA00C)
#define GEN6_RC_CONTROL _MMIO(0xA090)
#define GEN6_RC_CTL_RC6pp_ENABLE (1 << 16)
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
index 873bf996ceb5..f2eee8491b19 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;
@@ -344,35 +346,7 @@ 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;
}
@@ -380,9 +354,10 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
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 intel_gt *gt = &dev_priv->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,
@@ -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;
}
--
2.25.0
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