Re: [PATCH 1/3] amdgpu/pm: add limit_type to (pptable_funcs)->set_power_limit signature

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On 10/3/2021 10:16 AM, Darren Powell wrote:
  modify (pptable_funcs)->set_power_limit signature
  modify smu11 set_power_limit signature (arcturus, navi10, sienna_cichlid)
  modify smu13 set_power_limit signature (aldabaran)
  modify vangogh_set_power_limit signature (vangogh)

=== Test ===
sudo bash

AMDGPU_PCI_ADDR=`lspci -nn | grep "VGA\|Display" | cut -d " " -f 1`
AMDGPU_HWMON=`ls -la /sys/class/hwmon | grep $AMDGPU_PCI_ADDR | awk '{print $9}'`
HWMON_DIR=/sys/class/hwmon/${AMDGPU_HWMON}
LOGFILE=pp_show_power_cap.log

cp $LOGFILE{,.old}
lspci -nn | grep "VGA\|Display" > $LOGFILE
FILES="
power1_cap
power2_cap"

for f in $FILES
do
   if test -f "$HWMON_DIR/$f"; then
     echo === $f === >> $LOGFILE
     cat $HWMON_DIR/$f >> $LOGFILE
     RESTORE_VALUE=`cat $HWMON_DIR/$f` 2>&1  >> $LOGFILE
     echo RESTORE_VALUE $RESTORE_VALUE >> $LOGFILE
     echo 120000000 > $HWMON_DIR/$f
     sleep 3
     cat $HWMON_DIR/$f >> $LOGFILE
     echo $RESTORE_VALUE > $HWMON_DIR/$f
     sleep 3
     cat $HWMON_DIR/$f >> $LOGFILE
   else
     echo === $f === >> $LOGFILE
     echo File Not Found >> $LOGFILE
   fi
done
cat $LOGFILE

Signed-off-by: Darren Powell <darren.powell@xxxxxxx>
---
  drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h            |  4 +++-
  drivers/gpu/drm/amd/pm/inc/smu_v11_0.h             |  4 +++-
  drivers/gpu/drm/amd/pm/inc/smu_v13_0.h             |  4 +++-
  drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c          |  5 +++--
  drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c     | 14 ++++++++------
  drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.c   |  7 ++++---
  drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c |  6 ++++--
  drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c     |  8 +++++---
  8 files changed, 33 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
index 8156729c370b..3557f4e7fc30 100644
--- a/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
@@ -1008,7 +1008,9 @@ struct pptable_funcs {
  	/**
  	 * @set_power_limit: Set power limit in watts.
  	 */
-	int (*set_power_limit)(struct smu_context *smu, uint32_t n);
+	int (*set_power_limit)(struct smu_context *smu,
+			       enum smu_ppt_limit_type limit_type,
+			       uint32_t limit);
/**
  	 * @init_max_sustainable_clocks: Populate max sustainable clock speed
diff --git a/drivers/gpu/drm/amd/pm/inc/smu_v11_0.h b/drivers/gpu/drm/amd/pm/inc/smu_v11_0.h
index cbdae8a2c698..2d422e6a9feb 100644
--- a/drivers/gpu/drm/amd/pm/inc/smu_v11_0.h
+++ b/drivers/gpu/drm/amd/pm/inc/smu_v11_0.h
@@ -197,7 +197,9 @@ int smu_v11_0_notify_display_change(struct smu_context *smu);
  int smu_v11_0_get_current_power_limit(struct smu_context *smu,
  				      uint32_t *power_limit);
-int smu_v11_0_set_power_limit(struct smu_context *smu, uint32_t n);
+int smu_v11_0_set_power_limit(struct smu_context *smu,
+			      enum smu_ppt_limit_type limit_type,
+			      uint32_t limit);
int smu_v11_0_init_max_sustainable_clocks(struct smu_context *smu); diff --git a/drivers/gpu/drm/amd/pm/inc/smu_v13_0.h b/drivers/gpu/drm/amd/pm/inc/smu_v13_0.h
index dc91eb608791..e5d3b0d1a032 100644
--- a/drivers/gpu/drm/amd/pm/inc/smu_v13_0.h
+++ b/drivers/gpu/drm/amd/pm/inc/smu_v13_0.h
@@ -163,7 +163,9 @@ int smu_v13_0_notify_display_change(struct smu_context *smu);
  int smu_v13_0_get_current_power_limit(struct smu_context *smu,
  				      uint32_t *power_limit);
-int smu_v13_0_set_power_limit(struct smu_context *smu, uint32_t n);
+int smu_v13_0_set_power_limit(struct smu_context *smu,
+			      enum smu_ppt_limit_type limit_type,
+			      uint32_t limit);
int smu_v13_0_init_max_sustainable_clocks(struct smu_context *smu); diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index a2a2a8398cd7..faa78a048b1f 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -2342,9 +2342,10 @@ static int smu_set_power_limit(void *handle, uint32_t limit)
mutex_lock(&smu->mutex); + limit &= (1<<24)-1;
  	if (limit_type != SMU_DEFAULT_PPT_LIMIT)
  		if (smu->ppt_funcs->set_power_limit) {
-			ret = smu->ppt_funcs->set_power_limit(smu, limit);
+			ret = smu->ppt_funcs->set_power_limit(smu, limit_type, limit);
  			goto out;
  		}
@@ -2360,7 +2361,7 @@ static int smu_set_power_limit(void *handle, uint32_t limit)
  		limit = smu->current_power_limit;
if (smu->ppt_funcs->set_power_limit) {
-		ret = smu->ppt_funcs->set_power_limit(smu, limit);
+		ret = smu->ppt_funcs->set_power_limit(smu, limit_type, limit);
  		if (!ret && !(smu->user_dpm_profile.flags & SMU_DPM_USER_PROFILE_RESTORE))
  			smu->user_dpm_profile.power_limit = limit;
  	}
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
index 3470c33ee09d..aedaa4bb15c2 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
@@ -978,7 +978,9 @@ int smu_v11_0_get_current_power_limit(struct smu_context *smu,
  	return ret;
  }
-int smu_v11_0_set_power_limit(struct smu_context *smu, uint32_t n)
+int smu_v11_0_set_power_limit(struct smu_context *smu,
+			      enum smu_ppt_limit_type limit_type,
+			      uint32_t limit)
  {
  	int power_src;
  	int ret = 0;
@@ -1001,16 +1003,16 @@ int smu_v11_0_set_power_limit(struct smu_context *smu, uint32_t n)
  	 * BIT 16-23: PowerSource
  	 * BIT 0-15: PowerLimit
  	 */
-	n &= 0xFFFF;
-	n |= 0 << 24;
-	n |= (power_src) << 16;
-	ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_SetPptLimit, n, NULL);

Since limit_type is introduced as arg, could you also add below to smuv11/v13? Currently, anything other than default is used only in vangogh.

	if (limit_type != SMU_DEFAULT_PPT_LIMIT)
		return -EINVAL;

That will also avoid any 'unused variable' warning.

Thanks,
Lijo

+	limit &= 0xFFFF;
+	limit |= 0 << 24;
+	limit |= (power_src) << 16;
+	ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_SetPptLimit, limit, NULL);
  	if (ret) {
  		dev_err(smu->adev->dev, "[%s] Set power limit Failed!\n", __func__);
  		return ret;
  	}
- smu->current_power_limit = n;
+	smu->current_power_limit = limit;
return 0;
  }
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.c
index f6ef0ce6e9e2..eba516428f1b 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.c
@@ -2144,11 +2144,12 @@ static int vangogh_get_ppt_limit(struct smu_context *smu,
  	return 0;
  }
-static int vangogh_set_power_limit(struct smu_context *smu, uint32_t ppt_limit)
+static int vangogh_set_power_limit(struct smu_context *smu,
+				   enum smu_ppt_limit_type limit_type,
+				   uint32_t ppt_limit)
  {
  	struct smu_11_5_power_context *power_context =
-							smu->smu_power.power_context;
-	uint32_t limit_type = ppt_limit >> 24;
+			smu->smu_power.power_context;
  	int ret = 0;
if (!smu_cmn_feature_is_enabled(smu, SMU_FEATURE_PPT_BIT)) {
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
index 5019903db492..59a7d276541d 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
@@ -1241,11 +1241,13 @@ static int aldebaran_get_power_limit(struct smu_context *smu,
  	return 0;
  }
-static int aldebaran_set_power_limit(struct smu_context *smu, uint32_t n)
+static int aldebaran_set_power_limit(struct smu_context *smu,
+				     enum smu_ppt_limit_type limit_type,
+				     uint32_t limit)
  {
  	/* Power limit can be set only through primary die */
  	if (aldebaran_is_primary(smu))
-		return smu_v13_0_set_power_limit(smu, n);
+		return smu_v13_0_set_power_limit(smu, limit_type, limit);
return -EINVAL;
  }
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c
index 05c5e61f3506..58d837d9a414 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c
@@ -945,7 +945,9 @@ int smu_v13_0_get_current_power_limit(struct smu_context *smu,
  	return ret;
  }
-int smu_v13_0_set_power_limit(struct smu_context *smu, uint32_t n)
+int smu_v13_0_set_power_limit(struct smu_context *smu,
+			      enum smu_ppt_limit_type limit_type,
+			      uint32_t limit)
  {
  	int ret = 0;
@@ -954,13 +956,13 @@ int smu_v13_0_set_power_limit(struct smu_context *smu, uint32_t n)
  		return -EOPNOTSUPP;
  	}
- ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_SetPptLimit, n, NULL);
+	ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_SetPptLimit, limit, NULL);
  	if (ret) {
  		dev_err(smu->adev->dev, "[%s] Set power limit Failed!\n", __func__);
  		return ret;
  	}
- smu->current_power_limit = n;
+	smu->current_power_limit = limit;
return 0;
  }




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