Re: [PATCH 4/8] amdgpu/pm: Powerplay API for smu , changed 9 pm power functions to use API

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[AMD Official Use Only - Internal Distribution Only]





From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> on behalf of Darren Powell <darren.powell@xxxxxxx>
Sent: Saturday, December 19, 2020 8:48 AM
To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx <amd-gfx@xxxxxxxxxxxxxxxxxxxxx>
Cc: Powell, Darren <Darren.Powell@xxxxxxx>
Subject: [PATCH 4/8] amdgpu/pm: Powerplay API for smu , changed 9 pm power functions to use API
 
Modified Files
  smu_get_power_limit()         - modifed arg0 to match Powerplay API get_power_limit
  smu_set_power_limit()         - modifed arg0 to match Powerplay API set_power_limit
  smu_sys_get_pp_table()        - modifed signature to match Powerplay API get_pp_table
  smu_get_power_num_states()    - modifed arg0 to match Powerplay API get_pp_num_states
  smu_get_current_power_state() - modifed arg0 to match Powerplay API get_current_power_state
  smu_sys_get_pp_feature_mask() - modifed signature to match Powerplay API get_ppfeature_status
  smu_sys_set_pp_feature_mask() - modifed arg0 to match Powerplay API set_ppfeature_status

Other Changes
  added 7 above smu Powerplay functions to swsmu_dpm_funcs
  removed special smu handling of above functions and called through Powerplay API

Signed-off-by: Darren Powell <darren.powell@xxxxxxx>
---
 drivers/gpu/drm/amd/pm/amdgpu_pm.c        | 73 ++++++++---------------
 drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h   | 16 +++--
 drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 59 +++++++++++-------
 3 files changed, 69 insertions(+), 79 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
index b345c29147b9..41da5870af58 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
@@ -124,6 +124,7 @@ static ssize_t amdgpu_get_power_dpm_state(struct device *dev,
 {
         struct drm_device *ddev = dev_get_drvdata(dev);
         struct amdgpu_device *adev = drm_to_adev(ddev);
+       const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
         enum amd_pm_state_type pm;
         int ret;
 
@@ -136,12 +137,7 @@ static ssize_t amdgpu_get_power_dpm_state(struct device *dev,
                 return ret;
         }
 
-       if (is_support_sw_smu(adev)) {
-               if (adev->smu.ppt_funcs->get_current_power_state)
-                       pm = smu_get_current_power_state(&adev->smu);
-               else
-                       pm = adev->pm.dpm.user_state;
-       } else if (adev->powerplay.pp_funcs->get_current_power_state) {
+       if (pp_funcs->get_current_power_state) {
                 pm = amdgpu_dpm_get_current_power_state(adev);
         } else {
                 pm = adev->pm.dpm.user_state;
@@ -307,6 +303,7 @@ static ssize_t amdgpu_set_power_dpm_force_performance_level(struct device *dev,
 {
         struct drm_device *ddev = dev_get_drvdata(dev);
         struct amdgpu_device *adev = drm_to_adev(ddev);
+       const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
         enum amd_dpm_forced_level level;
         enum amd_dpm_forced_level current_level = 0xff;
         int ret = 0;
@@ -342,9 +339,7 @@ static ssize_t amdgpu_set_power_dpm_force_performance_level(struct device *dev,
                 return ret;
         }
 
-       if (is_support_sw_smu(adev))
-               current_level = smu_get_performance_level(&adev->smu);
-       else if (adev->powerplay.pp_funcs->get_performance_level)
+       if (pp_funcs->get_performance_level)
                 current_level = amdgpu_dpm_get_performance_level(adev);
 
         if (current_level == level) {
@@ -381,7 +376,7 @@ static ssize_t amdgpu_set_power_dpm_force_performance_level(struct device *dev,
                         pm_runtime_put_autosuspend(ddev->dev);
                         return -EINVAL;
                 }
-       } else if (adev->powerplay.pp_funcs->force_performance_level) {
+       } else if (pp_funcs->force_performance_level) {
                 mutex_lock(&adev->pm.mutex);
                 if (adev->pm.dpm.thermal_active) {
                         mutex_unlock(&adev->pm.mutex);
@@ -412,6 +407,7 @@ static ssize_t amdgpu_get_pp_num_states(struct device *dev,
 {
         struct drm_device *ddev = dev_get_drvdata(dev);
         struct amdgpu_device *adev = drm_to_adev(ddev);
+       const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
         struct pp_states_info data;
         int i, buf_len, ret;
 
@@ -424,12 +420,10 @@ static ssize_t amdgpu_get_pp_num_states(struct device *dev,
                 return ret;
         }
 
-       if (is_support_sw_smu(adev)) {
-               ret = smu_get_power_num_states(&adev->smu, &data);
-               if (ret)
+       if (pp_funcs->get_pp_num_states) {
+               ret = amdgpu_dpm_get_pp_num_states(adev, &data);
+               if (is_support_sw_smu(adev) && ret)
                         return ret;
-       } else if (adev->powerplay.pp_funcs->get_pp_num_states) {
-               amdgpu_dpm_get_pp_num_states(adev, &data);
         } else {
                 memset(&data, 0, sizeof(data));
         }
@@ -454,8 +448,8 @@ static ssize_t amdgpu_get_pp_cur_state(struct device *dev,
 {
         struct drm_device *ddev = dev_get_drvdata(dev);
         struct amdgpu_device *adev = drm_to_adev(ddev);
+       const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
         struct pp_states_info data;
-       struct smu_context *smu = &adev->smu;
         enum amd_pm_state_type pm = 0;
         int i = 0, ret = 0;
 
@@ -468,15 +462,13 @@ static ssize_t amdgpu_get_pp_cur_state(struct device *dev,
                 return ret;
         }
 
-       if (is_support_sw_smu(adev)) {
-               pm = smu_get_current_power_state(smu);
-               ret = smu_get_power_num_states(smu, &data);
-               if (ret)
-                       return ret;
-       } else if (adev->powerplay.pp_funcs->get_current_power_state
-                && adev->powerplay.pp_funcs->get_pp_num_states) {
+       if (pp_funcs->get_current_power_state
+                && pp_funcs->get_pp_num_states) {
                 pm = amdgpu_dpm_get_current_power_state(adev);
-               amdgpu_dpm_get_pp_num_states(adev, &data);
+               ret = amdgpu_dpm_get_pp_num_states(adev, &data);
+
+               if (is_support_sw_smu(adev) && ret)
+                       return ret;
[kevin]:
why we need this workaround for swsmu ?
after using amd_pm_funcs as a proxy, these judgments should not be required.
otherwise, can you help me understand it , thanks.
         }
 
         pm_runtime_mark_last_busy(ddev->dev);
@@ -589,13 +581,7 @@ static ssize_t amdgpu_get_pp_table(struct device *dev,
                 return ret;
         }
 
-       if (is_support_sw_smu(adev)) {
-               size = smu_sys_get_pp_table(&adev->smu, (void **)&table);
-               pm_runtime_mark_last_busy(ddev->dev);
-               pm_runtime_put_autosuspend(ddev->dev);
-               if (size < 0)
-                       return size;
-       } else if (adev->powerplay.pp_funcs->get_pp_table) {
+       if (adev->powerplay.pp_funcs->get_pp_table) {
                 size = amdgpu_dpm_get_pp_table(adev, &table);
                 pm_runtime_mark_last_busy(ddev->dev);
                 pm_runtime_put_autosuspend(ddev->dev);
@@ -989,9 +975,7 @@ static ssize_t amdgpu_get_pp_features(struct device *dev,
                 return ret;
         }
 
-       if (is_support_sw_smu(adev))
-               size = smu_sys_get_pp_feature_mask(&adev->smu, buf);
-       else if (adev->powerplay.pp_funcs->get_ppfeature_status)
+       if (adev->powerplay.pp_funcs->get_ppfeature_status)
                 size = amdgpu_dpm_get_ppfeature_status(adev, buf);
         else
                 size = snprintf(buf, PAGE_SIZE, "\n");
@@ -2862,6 +2846,7 @@ static ssize_t amdgpu_hwmon_show_power_cap_max(struct device *dev,
                                          char *buf)
 {
         struct amdgpu_device *adev = dev_get_drvdata(dev);
+       const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
         uint32_t limit = 0;
         ssize_t size;
         int r;
@@ -2875,10 +2860,7 @@ static ssize_t amdgpu_hwmon_show_power_cap_max(struct device *dev,
                 return r;
         }
 
-       if (is_support_sw_smu(adev)) {
-               smu_get_power_limit(&adev->smu, &limit, true);
-               size = snprintf(buf, PAGE_SIZE, "%u\n", limit * 1000000);
-       } else if (adev->powerplay.pp_funcs && adev->powerplay.pp_funcs->get_power_limit) {
+       if (pp_funcs && pp_funcs->get_power_limit) {
                 adev->powerplay.pp_funcs->get_power_limit(adev->powerplay.pp_handle, &limit, true);
                 size = snprintf(buf, PAGE_SIZE, "%u\n", limit * 1000000);
         } else {
@@ -2896,6 +2878,7 @@ static ssize_t amdgpu_hwmon_show_power_cap(struct device *dev,
                                          char *buf)
 {
         struct amdgpu_device *adev = dev_get_drvdata(dev);
+       const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
         uint32_t limit = 0;
         ssize_t size;
         int r;
@@ -2909,11 +2892,8 @@ static ssize_t amdgpu_hwmon_show_power_cap(struct device *dev,
                 return r;
         }
 
-       if (is_support_sw_smu(adev)) {
-               smu_get_power_limit(&adev->smu, &limit, false);
-               size = snprintf(buf, PAGE_SIZE, "%u\n", limit * 1000000);
-       } else if (adev->powerplay.pp_funcs && adev->powerplay.pp_funcs->get_power_limit) {
-               adev->powerplay.pp_funcs->get_power_limit(adev->powerplay.pp_handle, &limit, false);
+       if (pp_funcs && pp_funcs->get_power_limit) {
+               pp_funcs->get_power_limit(adev->powerplay.pp_handle, &limit, false);
                 size = snprintf(buf, PAGE_SIZE, "%u\n", limit * 1000000);
         } else {
                 size = snprintf(buf, PAGE_SIZE, "\n");
@@ -2932,6 +2912,7 @@ static ssize_t amdgpu_hwmon_set_power_cap(struct device *dev,
                 size_t count)
 {
         struct amdgpu_device *adev = dev_get_drvdata(dev);
+       const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
         int err;
         u32 value;
 
@@ -2954,10 +2935,8 @@ static ssize_t amdgpu_hwmon_set_power_cap(struct device *dev,
                 return err;
         }
 
-       if (is_support_sw_smu(adev))
-               err = smu_set_power_limit(&adev->smu, value);
-       else if (adev->powerplay.pp_funcs && adev->powerplay.pp_funcs->set_power_limit)
-               err = adev->powerplay.pp_funcs->set_power_limit(adev->powerplay.pp_handle, value);
+       if (pp_funcs && pp_funcs->set_power_limit)
+               err = pp_funcs->set_power_limit(adev->powerplay.pp_handle, value);
         else
                 err = -EINVAL;
 
diff --git a/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
index 9f739d1b18d5..8471b42587d3 100644
--- a/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
@@ -659,11 +659,9 @@ int smu_set_gfx_cgpg(struct smu_context *smu, bool enabled);
 
 int smu_set_fan_speed_rpm(void *handle, uint32_t speed);
 
-int smu_get_power_limit(struct smu_context *smu,
-                       uint32_t *limit,
-                       bool max_setting);
+int smu_get_power_limit(void *handle, uint32_t *limit, bool max_setting);
 
-int smu_set_power_limit(struct smu_context *smu, uint32_t limit);
+int smu_set_power_limit(void *handle, uint32_t limit);
 int smu_print_clk_levels(struct smu_context *smu, enum smu_clk_type clk_type, char *buf);
 
 int smu_od_edit_dpm_table(struct smu_context *smu,
@@ -718,10 +716,10 @@ extern const struct amdgpu_ip_block_version smu_v12_0_ip_block;
 
 bool is_support_sw_smu(struct amdgpu_device *adev);
 int smu_reset(struct smu_context *smu);
-int smu_sys_get_pp_table(struct smu_context *smu, void **table);
+int smu_sys_get_pp_table(void *handle, char **table);
 int smu_sys_set_pp_table(struct smu_context *smu,  void *buf, size_t size);
-int smu_get_power_num_states(struct smu_context *smu, struct pp_states_info *state_info);
-enum amd_pm_state_type smu_get_current_power_state(struct smu_context *smu);
+int smu_get_power_num_states(void *handle, struct pp_states_info *state_info);
+enum amd_pm_state_type smu_get_current_power_state(void *handle);
 int smu_write_watermarks_table(struct smu_context *smu);
 int smu_set_watermarks_for_clock_ranges(
                 struct smu_context *smu,
@@ -747,8 +745,8 @@ enum amd_dpm_forced_level smu_get_performance_level(void *handle);
 int smu_force_performance_level(struct smu_context *smu, enum amd_dpm_forced_level level);
 int smu_set_display_count(struct smu_context *smu, uint32_t count);
 int smu_set_ac_dc(struct smu_context *smu);
-size_t smu_sys_get_pp_feature_mask(struct smu_context *smu, char *buf);
-int smu_sys_set_pp_feature_mask(struct smu_context *smu, uint64_t new_mask);
+int smu_sys_get_pp_feature_mask(void *handle, char *buf);
+int smu_sys_set_pp_feature_mask(void *handle, uint64_t new_mask);
 int smu_force_clk_levels(struct smu_context *smu,
                          enum smu_clk_type clk_type,
                          uint32_t mask);
diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index acde0e831bb8..caed6a10ccd4 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -48,9 +48,10 @@
 
 static const struct amd_pm_funcs swsmu_dpm_funcs;
 
-size_t smu_sys_get_pp_feature_mask(struct smu_context *smu, char *buf)
+int smu_sys_get_pp_feature_mask(void *handle, char *buf)
 {
-       size_t size = 0;
+       struct smu_context *smu = handle;
+       int size = 0;
 
         if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled)
                 return -EOPNOTSUPP;
@@ -64,8 +65,9 @@ size_t smu_sys_get_pp_feature_mask(struct smu_context *smu, char *buf)
         return size;
 }
 
-int smu_sys_set_pp_feature_mask(struct smu_context *smu, uint64_t new_mask)
+int smu_sys_set_pp_feature_mask(void *handle, uint64_t new_mask)
 {
+       struct smu_context *smu = handle;
         int ret = 0;
 
         if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled)
@@ -268,7 +270,7 @@ int smu_dpm_set_power_gate(struct smu_context *smu, uint32_t block_type,
         return ret;
 }
 
-int smu_get_power_num_states(struct smu_context *smu,
+int smu_get_power_num_states(void *handle,
                              struct pp_states_info *state_info)
 {
         if (!state_info)
@@ -290,8 +292,9 @@ bool is_support_sw_smu(struct amdgpu_device *adev)
         return false;
 }
 
-int smu_sys_get_pp_table(struct smu_context *smu, void **table)
+int smu_sys_get_pp_table(void *handle, char **table)
 {
+       struct smu_context *smu = handle;
         struct smu_table_context *smu_table = &smu->smu_table;
         uint32_t powerplay_table_size;
 
@@ -1914,10 +1917,9 @@ int smu_set_fan_speed_rpm(void *handle, uint32_t speed)
         return ret;
 }
 
-int smu_get_power_limit(struct smu_context *smu,
-                       uint32_t *limit,
-                       bool max_setting)
+int smu_get_power_limit(void *handle, uint32_t *limit, bool max_setting)
 {
+       struct smu_context *smu = handle;
         if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled)
                 return -EOPNOTSUPP;
 
@@ -1930,8 +1932,9 @@ int smu_get_power_limit(struct smu_context *smu,
         return 0;
 }
 
-int smu_set_power_limit(struct smu_context *smu, uint32_t limit)
+int smu_set_power_limit(void *handle, uint32_t limit)
 {
+       struct smu_context *smu = handle;
         int ret = 0;
 
         if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled)
@@ -2482,8 +2485,9 @@ int smu_get_uclk_dpm_states(struct smu_context *smu,
         return ret;
 }
 
-enum amd_pm_state_type smu_get_current_power_state(struct smu_context *smu)
+enum amd_pm_state_type smu_get_current_power_state(void *handle)
 {
+       struct smu_context *smu = handle;
         enum amd_pm_state_type pm_state = POWER_STATE_TYPE_DEFAULT;
 
         if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled)
@@ -2569,19 +2573,28 @@ int smu_gfx_state_change_set(struct smu_context *smu, uint32_t state)
 
 static const struct amd_pm_funcs swsmu_dpm_funcs = {
         /* export for sysfs */
-       .set_fan_control_mode  = smu_set_fan_control_mode,
-       .get_fan_control_mode  = smu_get_fan_control_mode,
-       .set_fan_speed_percent = smu_set_fan_speed_percent,
-       .get_fan_speed_percent = smu_get_fan_speed_percent,
-       .get_performance_level = smu_get_performance_level,
-       .get_fan_speed_rpm     = smu_get_fan_speed_rpm,
-       .set_fan_speed_rpm     = smu_set_fan_speed_rpm,
-       .switch_power_profile  = smu_switch_power_profile,
+       .set_fan_control_mode    = smu_set_fan_control_mode,
+       .get_fan_control_mode    = smu_get_fan_control_mode,
+       .set_fan_speed_percent   = smu_set_fan_speed_percent,
+       .get_fan_speed_percent   = smu_get_fan_speed_percent,
+       .get_performance_level   = smu_get_performance_level,
+       .get_current_power_state = smu_get_current_power_state,
+       .get_fan_speed_rpm       = smu_get_fan_speed_rpm,
+       .set_fan_speed_rpm       = smu_set_fan_speed_rpm,
+       .get_pp_num_states       = smu_get_power_num_states,
+       .get_pp_table            = smu_sys_get_pp_table,
+       .switch_power_profile    = smu_switch_power_profile,
         /* export to amdgpu */
-       .set_mp1_state         = smu_set_mp1_state,
+       .set_power_limit         = smu_set_power_limit,
+       .get_power_limit         = smu_get_power_limit,
+       .set_mp1_state           = smu_set_mp1_state,
         /* export to DC */
-       .enable_mgpu_fan_boost = smu_enable_mgpu_fan_boost,
-       .asic_reset_mode_2     = smu_mode2_reset,
-       .set_df_cstate         = smu_set_df_cstate,
-       .set_xgmi_pstate       = smu_set_xgmi_pstate,
+       .enable_mgpu_fan_boost   = smu_enable_mgpu_fan_boost,
+       .get_ppfeature_status    = smu_sys_get_pp_feature_mask,
+       .set_ppfeature_status    = smu_sys_set_pp_feature_mask,
+       .asic_reset_mode_2       = smu_mode2_reset,
+       .set_df_cstate           = smu_set_df_cstate,
+       .set_xgmi_pstate         = smu_set_xgmi_pstate,
+
+
[kevin]:
the blank line is not neccessary,
please use "checkpatch.pl' to check coding style problems before patch review.
 };
--
2.25.1

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