amdgpu/pm: (v2) add limit_type to (pptable_funcs)->set_power_limit signature

 v2
 add check for SMU_DEFAULT_PPT_LIMIT

 v1
 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@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

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);
 

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);
 

drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c

@@ -2344,9 +2344,10 @@ 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;
 		}
 
@@ -2362,7 +2363,7 @@ 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;
 	}

drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c

@@ -978,11 +978,16 @@ 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;
 
+	if (limit_type != SMU_DEFAULT_PPT_LIMIT)
+		return -EINVAL;
+
 	if (!smu_cmn_feature_is_enabled(smu, SMU_FEATURE_PPT_BIT)) {
 		dev_err(smu->adev->dev, "Setting new power limit is not supported!\n");
 		return -EOPNOTSUPP;
@@ -1001,16 +1006,16 @@ 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);
+	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;
 }

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)) {

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;
 }

drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c

@@ -945,22 +945,27 @@ 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;
 
+	if (limit_type != SMU_DEFAULT_PPT_LIMIT)
+		return -EINVAL;
+
 	if (!smu_cmn_feature_is_enabled(smu, SMU_FEATURE_PPT_BIT)) {
 		dev_err(smu->adev->dev, "Setting new power limit is not supported!\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;
 }