unified amdgpu device attribute node functions:
1. add some helper functions to create amdgpu device attribute node.
2. create device node according to device attr flags on different VF mode.
3. rename some functions name to adapt a new interface.

v2:
1. remove ATTR_STATE_DEAD, ATTR_STATE_ALIVE enum.
2. rename callback function perform to attr_update.
3. modify some variable names

Signed-off-by: Kevin Wang <kevin1.w...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 494 +++++++++++--------------
 drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h |  46 +++
 2 files changed, 262 insertions(+), 278 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
index c762deb5abc7..b75362bf0742 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -154,9 +154,9 @@ int amdgpu_dpm_read_sensor(struct amdgpu_device *adev, enum 
amd_pp_sensors senso
  *
  */
 
-static ssize_t amdgpu_get_dpm_state(struct device *dev,
-                                   struct device_attribute *attr,
-                                   char *buf)
+static ssize_t amdgpu_get_power_dpm_state(struct device *dev,
+                                         struct device_attribute *attr,
+                                         char *buf)
 {
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
@@ -189,10 +189,10 @@ static ssize_t amdgpu_get_dpm_state(struct device *dev,
                        (pm == POWER_STATE_TYPE_BALANCED) ? "balanced" : 
"performance");
 }
 
-static ssize_t amdgpu_set_dpm_state(struct device *dev,
-                                   struct device_attribute *attr,
-                                   const char *buf,
-                                   size_t count)
+static ssize_t amdgpu_set_power_dpm_state(struct device *dev,
+                                         struct device_attribute *attr,
+                                         const char *buf,
+                                         size_t count)
 {
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
@@ -294,9 +294,9 @@ static ssize_t amdgpu_set_dpm_state(struct device *dev,
  *
  */
 
-static ssize_t amdgpu_get_dpm_forced_performance_level(struct device *dev,
-                                               struct device_attribute *attr,
-                                                               char *buf)
+static ssize_t amdgpu_get_power_dpm_force_performance_level(struct device *dev,
+                                                           struct 
device_attribute *attr,
+                                                           char *buf)
 {
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
@@ -332,10 +332,10 @@ static ssize_t 
amdgpu_get_dpm_forced_performance_level(struct device *dev,
                        "unknown");
 }
 
-static ssize_t amdgpu_set_dpm_forced_performance_level(struct device *dev,
-                                                      struct device_attribute 
*attr,
-                                                      const char *buf,
-                                                      size_t count)
+static ssize_t amdgpu_set_power_dpm_force_performance_level(struct device *dev,
+                                                           struct 
device_attribute *attr,
+                                                           const char *buf,
+                                                           size_t count)
 {
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
@@ -873,10 +873,10 @@ static ssize_t amdgpu_get_pp_od_clk_voltage(struct device 
*dev,
  * the corresponding bit from original ppfeature masks and input the
  * new ppfeature masks.
  */
-static ssize_t amdgpu_set_pp_feature_status(struct device *dev,
-               struct device_attribute *attr,
-               const char *buf,
-               size_t count)
+static ssize_t amdgpu_set_pp_features(struct device *dev,
+                                     struct device_attribute *attr,
+                                     const char *buf,
+                                     size_t count)
 {
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
@@ -917,9 +917,9 @@ static ssize_t amdgpu_set_pp_feature_status(struct device 
*dev,
        return count;
 }
 
-static ssize_t amdgpu_get_pp_feature_status(struct device *dev,
-               struct device_attribute *attr,
-               char *buf)
+static ssize_t amdgpu_get_pp_features(struct device *dev,
+                                     struct device_attribute *attr,
+                                     char *buf)
 {
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
@@ -1663,9 +1663,9 @@ static ssize_t amdgpu_set_pp_power_profile_mode(struct 
device *dev,
  * The SMU firmware computes a percentage of load based on the
  * aggregate activity level in the IP cores.
  */
-static ssize_t amdgpu_get_busy_percent(struct device *dev,
-               struct device_attribute *attr,
-               char *buf)
+static ssize_t amdgpu_get_gpu_busy_percent(struct device *dev,
+                                          struct device_attribute *attr,
+                                          char *buf)
 {
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
@@ -1699,9 +1699,9 @@ static ssize_t amdgpu_get_busy_percent(struct device *dev,
  * The SMU firmware computes a percentage of load based on the
  * aggregate activity level in the IP cores.
  */
-static ssize_t amdgpu_get_memory_busy_percent(struct device *dev,
-               struct device_attribute *attr,
-               char *buf)
+static ssize_t amdgpu_get_mem_busy_percent(struct device *dev,
+                                          struct device_attribute *attr,
+                                          char *buf)
 {
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
@@ -1790,57 +1790,174 @@ static ssize_t amdgpu_get_unique_id(struct device *dev,
        return 0;
 }
 
-static DEVICE_ATTR(power_dpm_state, S_IRUGO | S_IWUSR, amdgpu_get_dpm_state, 
amdgpu_set_dpm_state);
-static DEVICE_ATTR(power_dpm_force_performance_level, S_IRUGO | S_IWUSR,
-                  amdgpu_get_dpm_forced_performance_level,
-                  amdgpu_set_dpm_forced_performance_level);
-static DEVICE_ATTR(pp_num_states, S_IRUGO, amdgpu_get_pp_num_states, NULL);
-static DEVICE_ATTR(pp_cur_state, S_IRUGO, amdgpu_get_pp_cur_state, NULL);
-static DEVICE_ATTR(pp_force_state, S_IRUGO | S_IWUSR,
-               amdgpu_get_pp_force_state,
-               amdgpu_set_pp_force_state);
-static DEVICE_ATTR(pp_table, S_IRUGO | S_IWUSR,
-               amdgpu_get_pp_table,
-               amdgpu_set_pp_table);
-static DEVICE_ATTR(pp_dpm_sclk, S_IRUGO | S_IWUSR,
-               amdgpu_get_pp_dpm_sclk,
-               amdgpu_set_pp_dpm_sclk);
-static DEVICE_ATTR(pp_dpm_mclk, S_IRUGO | S_IWUSR,
-               amdgpu_get_pp_dpm_mclk,
-               amdgpu_set_pp_dpm_mclk);
-static DEVICE_ATTR(pp_dpm_socclk, S_IRUGO | S_IWUSR,
-               amdgpu_get_pp_dpm_socclk,
-               amdgpu_set_pp_dpm_socclk);
-static DEVICE_ATTR(pp_dpm_fclk, S_IRUGO | S_IWUSR,
-               amdgpu_get_pp_dpm_fclk,
-               amdgpu_set_pp_dpm_fclk);
-static DEVICE_ATTR(pp_dpm_dcefclk, S_IRUGO | S_IWUSR,
-               amdgpu_get_pp_dpm_dcefclk,
-               amdgpu_set_pp_dpm_dcefclk);
-static DEVICE_ATTR(pp_dpm_pcie, S_IRUGO | S_IWUSR,
-               amdgpu_get_pp_dpm_pcie,
-               amdgpu_set_pp_dpm_pcie);
-static DEVICE_ATTR(pp_sclk_od, S_IRUGO | S_IWUSR,
-               amdgpu_get_pp_sclk_od,
-               amdgpu_set_pp_sclk_od);
-static DEVICE_ATTR(pp_mclk_od, S_IRUGO | S_IWUSR,
-               amdgpu_get_pp_mclk_od,
-               amdgpu_set_pp_mclk_od);
-static DEVICE_ATTR(pp_power_profile_mode, S_IRUGO | S_IWUSR,
-               amdgpu_get_pp_power_profile_mode,
-               amdgpu_set_pp_power_profile_mode);
-static DEVICE_ATTR(pp_od_clk_voltage, S_IRUGO | S_IWUSR,
-               amdgpu_get_pp_od_clk_voltage,
-               amdgpu_set_pp_od_clk_voltage);
-static DEVICE_ATTR(gpu_busy_percent, S_IRUGO,
-               amdgpu_get_busy_percent, NULL);
-static DEVICE_ATTR(mem_busy_percent, S_IRUGO,
-               amdgpu_get_memory_busy_percent, NULL);
-static DEVICE_ATTR(pcie_bw, S_IRUGO, amdgpu_get_pcie_bw, NULL);
-static DEVICE_ATTR(pp_features, S_IRUGO | S_IWUSR,
-               amdgpu_get_pp_feature_status,
-               amdgpu_set_pp_feature_status);
-static DEVICE_ATTR(unique_id, S_IRUGO, amdgpu_get_unique_id, NULL);
+static struct amdgpu_device_attr amdgpu_device_attrs[] = {
+       AMDGPU_DEVICE_ATTR_RW(power_dpm_state,                          
ATTR_FLAG_BASIC|ATTR_FLAG_ONEVF),
+       AMDGPU_DEVICE_ATTR_RW(power_dpm_force_performance_level,        
ATTR_FLAG_BASIC|ATTR_FLAG_ONEVF),
+       AMDGPU_DEVICE_ATTR_RO(pp_num_states,                            
ATTR_FLAG_BASIC),
+       AMDGPU_DEVICE_ATTR_RO(pp_cur_state,                             
ATTR_FLAG_BASIC),
+       AMDGPU_DEVICE_ATTR_RW(pp_force_state,                           
ATTR_FLAG_BASIC),
+       AMDGPU_DEVICE_ATTR_RW(pp_table,                                 
ATTR_FLAG_BASIC),
+       AMDGPU_DEVICE_ATTR_RW(pp_dpm_sclk,                              
ATTR_FLAG_BASIC|ATTR_FLAG_ONEVF),
+       AMDGPU_DEVICE_ATTR_RW(pp_dpm_mclk,                              
ATTR_FLAG_BASIC|ATTR_FLAG_ONEVF),
+       AMDGPU_DEVICE_ATTR_RW(pp_dpm_socclk,                            
ATTR_FLAG_BASIC|ATTR_FLAG_ONEVF),
+       AMDGPU_DEVICE_ATTR_RW(pp_dpm_fclk,                              
ATTR_FLAG_BASIC|ATTR_FLAG_ONEVF),
+       AMDGPU_DEVICE_ATTR_RW(pp_dpm_dcefclk,                           
ATTR_FLAG_BASIC),
+       AMDGPU_DEVICE_ATTR_RW(pp_dpm_pcie,                              
ATTR_FLAG_BASIC),
+       AMDGPU_DEVICE_ATTR_RW(pp_sclk_od,                               
ATTR_FLAG_BASIC),
+       AMDGPU_DEVICE_ATTR_RW(pp_mclk_od,                               
ATTR_FLAG_BASIC),
+       AMDGPU_DEVICE_ATTR_RW(pp_power_profile_mode,                    
ATTR_FLAG_BASIC),
+       AMDGPU_DEVICE_ATTR_RW(pp_od_clk_voltage,                        
ATTR_FLAG_BASIC),
+       AMDGPU_DEVICE_ATTR_RO(gpu_busy_percent,                         
ATTR_FLAG_BASIC),
+       AMDGPU_DEVICE_ATTR_RO(mem_busy_percent,                         
ATTR_FLAG_BASIC),
+       AMDGPU_DEVICE_ATTR_RO(pcie_bw,                                  
ATTR_FLAG_BASIC),
+       AMDGPU_DEVICE_ATTR_RW(pp_features,                              
ATTR_FLAG_BASIC),
+       AMDGPU_DEVICE_ATTR_RO(unique_id,                                
ATTR_FLAG_BASIC),
+};
+
+static int default_attr_update(struct amdgpu_device *adev, struct 
amdgpu_device_attr *attr,
+                              uint32_t mask)
+{
+       struct device_attribute *dev_attr = &attr->dev_attr;
+       const char *attr_name = dev_attr->attr.name;
+       struct pp_hwmgr *hwmgr = adev->powerplay.pp_handle;
+       enum amd_asic_type asic_type = adev->asic_type;
+
+       if (!(attr->flags & mask)) {
+               attr->states = ATTR_STATE_UNSUPPORTED;
+               return 0;
+       }
+
+#define DEVICE_ATTR_IS(_name)  (!strcmp(attr_name, #_name))
+
+       if (DEVICE_ATTR_IS(pp_dpm_socclk)) {
+               if (asic_type <= CHIP_VEGA10)
+                       attr->states = ATTR_STATE_UNSUPPORTED;
+       } else if (DEVICE_ATTR_IS(pp_dpm_dcefclk)) {
+               if (asic_type <= CHIP_VEGA10 || asic_type == CHIP_ARCTURUS)
+                       attr->states = ATTR_STATE_UNSUPPORTED;
+       } else if (DEVICE_ATTR_IS(pp_dpm_fclk)) {
+               if (asic_type < CHIP_VEGA20)
+                       attr->states = ATTR_STATE_UNSUPPORTED;
+       } else if (DEVICE_ATTR_IS(pp_dpm_pcie)) {
+               if (asic_type == CHIP_ARCTURUS)
+                       attr->states = ATTR_STATE_UNSUPPORTED;
+       } else if (DEVICE_ATTR_IS(pp_od_clk_voltage)) {
+               attr->states = ATTR_STATE_UNSUPPORTED;
+               if ((is_support_sw_smu(adev) && adev->smu.od_enabled) ||
+                   (!is_support_sw_smu(adev) && hwmgr->od_enabled))
+                       attr->states = ATTR_STATE_UNSUPPORTED;
+       } else if (DEVICE_ATTR_IS(mem_busy_percent)) {
+               if (adev->flags & AMD_IS_APU || asic_type == CHIP_VEGA10)
+                       attr->states = ATTR_STATE_UNSUPPORTED;
+       } else if (DEVICE_ATTR_IS(pcie_bw)) {
+               /* PCIe Perf counters won't work on APU nodes */
+               if (adev->flags & AMD_IS_APU)
+                       attr->states = ATTR_STATE_UNSUPPORTED;
+       } else if (DEVICE_ATTR_IS(unique_id)) {
+               if (!adev->unique_id)
+                       attr->states = ATTR_STATE_UNSUPPORTED;
+       } else if (DEVICE_ATTR_IS(pp_features)) {
+               if (adev->flags & AMD_IS_APU || asic_type <= CHIP_VEGA10)
+                       attr->states = ATTR_STATE_UNSUPPORTED;
+       }
+
+       if (asic_type == CHIP_ARCTURUS) {
+               /* Arcturus does not support standalone mclk/socclk/fclk level 
setting */
+               if (DEVICE_ATTR_IS(pp_dpm_mclk) ||
+                   DEVICE_ATTR_IS(pp_dpm_socclk) ||
+                   DEVICE_ATTR_IS(pp_dpm_fclk)) {
+                       dev_attr->attr.mode &= ~S_IWUGO;
+                       dev_attr->store = NULL;
+               }
+       }
+
+#undef DEVICE_ATTR_IS
+
+       return 0;
+}
+
+
+static int amdgpu_device_attr_create(struct amdgpu_device *adev,
+                                    struct amdgpu_device_attr *attr,
+                                    uint32_t mask)
+{
+       int ret = 0;
+       struct device_attribute *dev_attr = &attr->dev_attr;
+       const char *name = dev_attr->attr.name;
+       int (*attr_update)(struct amdgpu_device *adev, struct 
amdgpu_device_attr *attr,
+                          uint32_t mask) = default_attr_update;
+
+       BUG_ON(!attr);
+
+       attr_update = attr->attr_update ? attr_update : default_attr_update;
+
+       ret = attr_update(adev, attr, mask);
+       if (ret) {
+               dev_err(adev->dev, "failed to update device file %s, ret = 
%d\n",
+                       name, ret);
+               return ret;
+       }
+
+       /* the attr->states maybe changed after call attr->attr_update function 
*/
+       if (attr->states == ATTR_STATE_UNSUPPORTED)
+               return 0;
+
+       ret = device_create_file(adev->dev, dev_attr);
+       if (ret) {
+               dev_err(adev->dev, "failed to create device file %s, ret = 
%d\n",
+                       name, ret);
+       }
+
+       attr->states = ATTR_STATE_SUPPORTED;
+
+       return ret;
+}
+
+static void amdgpu_device_attr_remove(struct amdgpu_device *adev, struct 
amdgpu_device_attr *attr)
+{
+       struct device_attribute *dev_attr = &attr->dev_attr;
+
+       if (attr->states == ATTR_STATE_UNSUPPORTED)
+               return;
+
+       device_remove_file(adev->dev, dev_attr);
+
+       attr->states = ATTR_STATE_UNSUPPORTED;
+}
+
+static int amdgpu_device_attr_create_groups(struct amdgpu_device *adev,
+                                           struct amdgpu_device_attr *attrs,
+                                           uint32_t counts,
+                                           uint32_t mask)
+{
+       int ret = 0;
+       uint32_t i = 0;
+
+       for (i = 0; i < counts; i++) {
+               ret = amdgpu_device_attr_create(adev, &attrs[i], mask);
+               if (ret)
+                       goto failed;
+       }
+
+       return 0;
+
+failed:
+       for (; i > 0; i--) {
+               amdgpu_device_attr_remove(adev, &attrs[i]);
+       }
+
+       return ret;
+}
+
+static void amdgpu_device_attr_remove_groups(struct amdgpu_device *adev,
+                                            struct amdgpu_device_attr *attrs,
+                                            uint32_t counts)
+{
+       uint32_t i = 0;
+
+       for (i = 0; i < counts; i++)
+               amdgpu_device_attr_remove(adev, &attrs[i]);
+}
 
 static ssize_t amdgpu_hwmon_show_temp(struct device *dev,
                                      struct device_attribute *attr,
@@ -3241,8 +3358,8 @@ int amdgpu_pm_load_smu_firmware(struct amdgpu_device 
*adev, uint32_t *smu_versio
 
 int amdgpu_pm_sysfs_init(struct amdgpu_device *adev)
 {
-       struct pp_hwmgr *hwmgr = adev->powerplay.pp_handle;
        int ret;
+       uint32_t mask = 0;
 
        if (adev->pm.sysfs_initialized)
                return 0;
@@ -3260,168 +3377,25 @@ int amdgpu_pm_sysfs_init(struct amdgpu_device *adev)
                return ret;
        }
 
-       ret = device_create_file(adev->dev, &dev_attr_power_dpm_state);
-       if (ret) {
-               DRM_ERROR("failed to create device file for dpm state\n");
-               return ret;
-       }
-       ret = device_create_file(adev->dev, 
&dev_attr_power_dpm_force_performance_level);
-       if (ret) {
-               DRM_ERROR("failed to create device file for dpm state\n");
-               return ret;
-       }
-
-       if (!amdgpu_sriov_vf(adev)) {
-               ret = device_create_file(adev->dev, &dev_attr_pp_num_states);
-               if (ret) {
-                       DRM_ERROR("failed to create device file 
pp_num_states\n");
-                       return ret;
-               }
-               ret = device_create_file(adev->dev, &dev_attr_pp_cur_state);
-               if (ret) {
-                       DRM_ERROR("failed to create device file 
pp_cur_state\n");
-                       return ret;
-               }
-               ret = device_create_file(adev->dev, &dev_attr_pp_force_state);
-               if (ret) {
-                       DRM_ERROR("failed to create device file 
pp_force_state\n");
-                       return ret;
-               }
-               ret = device_create_file(adev->dev, &dev_attr_pp_table);
-               if (ret) {
-                       DRM_ERROR("failed to create device file pp_table\n");
-                       return ret;
-               }
-       }
-
-       ret = device_create_file(adev->dev, &dev_attr_pp_dpm_sclk);
-       if (ret) {
-               DRM_ERROR("failed to create device file pp_dpm_sclk\n");
-               return ret;
-       }
-
-       /* Arcturus does not support standalone mclk/socclk/fclk level setting 
*/
-       if (adev->asic_type == CHIP_ARCTURUS) {
-               dev_attr_pp_dpm_mclk.attr.mode &= ~S_IWUGO;
-               dev_attr_pp_dpm_mclk.store = NULL;
-
-               dev_attr_pp_dpm_socclk.attr.mode &= ~S_IWUGO;
-               dev_attr_pp_dpm_socclk.store = NULL;
-
-               dev_attr_pp_dpm_fclk.attr.mode &= ~S_IWUGO;
-               dev_attr_pp_dpm_fclk.store = NULL;
-       }
-
-       ret = device_create_file(adev->dev, &dev_attr_pp_dpm_mclk);
-       if (ret) {
-               DRM_ERROR("failed to create device file pp_dpm_mclk\n");
-               return ret;
-       }
-       if (adev->asic_type >= CHIP_VEGA10) {
-               ret = device_create_file(adev->dev, &dev_attr_pp_dpm_socclk);
-               if (ret) {
-                       DRM_ERROR("failed to create device file 
pp_dpm_socclk\n");
-                       return ret;
-               }
-               if (adev->asic_type != CHIP_ARCTURUS) {
-                       ret = device_create_file(adev->dev, 
&dev_attr_pp_dpm_dcefclk);
-                       if (ret) {
-                               DRM_ERROR("failed to create device file 
pp_dpm_dcefclk\n");
-                               return ret;
-                       }
-               }
-       }
-       if (adev->asic_type >= CHIP_VEGA20) {
-               ret = device_create_file(adev->dev, &dev_attr_pp_dpm_fclk);
-               if (ret) {
-                       DRM_ERROR("failed to create device file pp_dpm_fclk\n");
-                       return ret;
-               }
-       }
-
-       /* the reset are not needed for SRIOV one vf mode */
-       if (amdgpu_sriov_vf(adev)) {
-               adev->pm.sysfs_initialized = true;
-               return ret;
+       switch (amdgpu_virt_get_sriov_vf_mode(adev)) {
+       case SRIOV_VF_MODE_ONE_VF:
+               mask = ATTR_FLAG_ONEVF;
+               break;
+       case SRIOV_VF_MODE_MULTI_VF:
+               mask = 0;
+               break;
+       case SRIOV_VF_MODE_BARE_METAL:
+       default:
+               mask = ATTR_FLAG_MASK_ALL;
+               break;
        }
 
-       if (adev->asic_type != CHIP_ARCTURUS) {
-               ret = device_create_file(adev->dev, &dev_attr_pp_dpm_pcie);
-               if (ret) {
-                       DRM_ERROR("failed to create device file pp_dpm_pcie\n");
-                       return ret;
-               }
-       }
-       ret = device_create_file(adev->dev, &dev_attr_pp_sclk_od);
-       if (ret) {
-               DRM_ERROR("failed to create device file pp_sclk_od\n");
-               return ret;
-       }
-       ret = device_create_file(adev->dev, &dev_attr_pp_mclk_od);
-       if (ret) {
-               DRM_ERROR("failed to create device file pp_mclk_od\n");
-               return ret;
-       }
-       ret = device_create_file(adev->dev,
-                       &dev_attr_pp_power_profile_mode);
-       if (ret) {
-               DRM_ERROR("failed to create device file "
-                               "pp_power_profile_mode\n");
-               return ret;
-       }
-       if ((is_support_sw_smu(adev) && adev->smu.od_enabled) ||
-           (!is_support_sw_smu(adev) && hwmgr->od_enabled)) {
-               ret = device_create_file(adev->dev,
-                               &dev_attr_pp_od_clk_voltage);
-               if (ret) {
-                       DRM_ERROR("failed to create device file "
-                                       "pp_od_clk_voltage\n");
-                       return ret;
-               }
-       }
-       ret = device_create_file(adev->dev,
-                       &dev_attr_gpu_busy_percent);
-       if (ret) {
-               DRM_ERROR("failed to create device file "
-                               "gpu_busy_level\n");
-               return ret;
-       }
-       /* APU does not have its own dedicated memory */
-       if (!(adev->flags & AMD_IS_APU) &&
-            (adev->asic_type != CHIP_VEGA10)) {
-               ret = device_create_file(adev->dev,
-                               &dev_attr_mem_busy_percent);
-               if (ret) {
-                       DRM_ERROR("failed to create device file "
-                                       "mem_busy_percent\n");
-                       return ret;
-               }
-       }
-       /* PCIe Perf counters won't work on APU nodes */
-       if (!(adev->flags & AMD_IS_APU)) {
-               ret = device_create_file(adev->dev, &dev_attr_pcie_bw);
-               if (ret) {
-                       DRM_ERROR("failed to create device file pcie_bw\n");
-                       return ret;
-               }
-       }
-       if (adev->unique_id)
-               ret = device_create_file(adev->dev, &dev_attr_unique_id);
-       if (ret) {
-               DRM_ERROR("failed to create device file unique_id\n");
+       ret = amdgpu_device_attr_create_groups(adev,
+                                              amdgpu_device_attrs,
+                                              ARRAY_SIZE(amdgpu_device_attrs),
+                                              mask);
+       if (ret)
                return ret;
-       }
-
-       if ((adev->asic_type >= CHIP_VEGA10) &&
-           !(adev->flags & AMD_IS_APU)) {
-               ret = device_create_file(adev->dev,
-                               &dev_attr_pp_features);
-               if (ret) {
-                       DRM_ERROR("failed to create device file "
-                                       "pp_features\n");
-                       return ret;
-               }
-       }
 
        adev->pm.sysfs_initialized = true;
 
@@ -3430,51 +3404,15 @@ int amdgpu_pm_sysfs_init(struct amdgpu_device *adev)
 
 void amdgpu_pm_sysfs_fini(struct amdgpu_device *adev)
 {
-       struct pp_hwmgr *hwmgr = adev->powerplay.pp_handle;
-
        if (adev->pm.dpm_enabled == 0)
                return;
 
        if (adev->pm.int_hwmon_dev)
                hwmon_device_unregister(adev->pm.int_hwmon_dev);
-       device_remove_file(adev->dev, &dev_attr_power_dpm_state);
-       device_remove_file(adev->dev, 
&dev_attr_power_dpm_force_performance_level);
-
-       device_remove_file(adev->dev, &dev_attr_pp_num_states);
-       device_remove_file(adev->dev, &dev_attr_pp_cur_state);
-       device_remove_file(adev->dev, &dev_attr_pp_force_state);
-       device_remove_file(adev->dev, &dev_attr_pp_table);
-
-       device_remove_file(adev->dev, &dev_attr_pp_dpm_sclk);
-       device_remove_file(adev->dev, &dev_attr_pp_dpm_mclk);
-       if (adev->asic_type >= CHIP_VEGA10) {
-               device_remove_file(adev->dev, &dev_attr_pp_dpm_socclk);
-               if (adev->asic_type != CHIP_ARCTURUS)
-                       device_remove_file(adev->dev, &dev_attr_pp_dpm_dcefclk);
-       }
-       if (adev->asic_type != CHIP_ARCTURUS)
-               device_remove_file(adev->dev, &dev_attr_pp_dpm_pcie);
-       if (adev->asic_type >= CHIP_VEGA20)
-               device_remove_file(adev->dev, &dev_attr_pp_dpm_fclk);
-       device_remove_file(adev->dev, &dev_attr_pp_sclk_od);
-       device_remove_file(adev->dev, &dev_attr_pp_mclk_od);
-       device_remove_file(adev->dev,
-                       &dev_attr_pp_power_profile_mode);
-       if ((is_support_sw_smu(adev) && adev->smu.od_enabled) ||
-           (!is_support_sw_smu(adev) && hwmgr->od_enabled))
-               device_remove_file(adev->dev,
-                               &dev_attr_pp_od_clk_voltage);
-       device_remove_file(adev->dev, &dev_attr_gpu_busy_percent);
-       if (!(adev->flags & AMD_IS_APU) &&
-            (adev->asic_type != CHIP_VEGA10))
-               device_remove_file(adev->dev, &dev_attr_mem_busy_percent);
-       if (!(adev->flags & AMD_IS_APU))
-               device_remove_file(adev->dev, &dev_attr_pcie_bw);
-       if (adev->unique_id)
-               device_remove_file(adev->dev, &dev_attr_unique_id);
-       if ((adev->asic_type >= CHIP_VEGA10) &&
-           !(adev->flags & AMD_IS_APU))
-               device_remove_file(adev->dev, &dev_attr_pp_features);
+
+       amdgpu_device_attr_remove_groups(adev,
+                                        amdgpu_device_attrs,
+                                        ARRAY_SIZE(amdgpu_device_attrs));
 }
 
 void amdgpu_pm_compute_clocks(struct amdgpu_device *adev)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h
index 5db0ef86e84c..48e8086baf33 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h
@@ -30,6 +30,52 @@ struct cg_flag_name
        const char *name;
 };
 
+enum amdgpu_device_attr_flags {
+       ATTR_FLAG_BASIC = (1 << 0),
+       ATTR_FLAG_ONEVF = (1 << 16),
+};
+
+#define ATTR_FLAG_TYPE_MASK    (0x0000ffff)
+#define ATTR_FLAG_MODE_MASK    (0xffff0000)
+#define ATTR_FLAG_MASK_ALL     (0xffffffff)
+
+enum amdgpu_device_attr_states {
+       ATTR_STATE_UNSUPPORTED = 0,
+       ATTR_STATE_SUPPORTED,
+};
+
+struct amdgpu_device_attr {
+       struct device_attribute dev_attr;
+       enum amdgpu_device_attr_flags flags;
+       enum amdgpu_device_attr_states states;
+       int (*attr_update)(struct amdgpu_device *adev,
+                          struct amdgpu_device_attr* attr,
+                          uint32_t mask);
+};
+
+#define to_amdgpu_device_attr(_dev_attr) \
+       container_of(_dev_attr, struct amdgpu_device_attr, dev_attr)
+
+#define __AMDGPU_DEVICE_ATTR(_name, _mode, _show, _store, _flags, ...) \
+       { .dev_attr = __ATTR(_name, _mode, _show, _store),              \
+         .flags = _flags,                                              \
+         .states = ATTR_STATE_SUPPORTED,                                       
\
+         ##__VA_ARGS__, }
+
+#define AMDGPU_DEVICE_ATTR(_name, _mode, _flags, ...)                  \
+       __AMDGPU_DEVICE_ATTR(_name, _mode,                              \
+                            amdgpu_get_##_name, amdgpu_set_##_name,    \
+                            _flags, ##__VA_ARGS__)
+
+#define AMDGPU_DEVICE_ATTR_RW(_name, _flags, ...)                      \
+       AMDGPU_DEVICE_ATTR(_name, S_IRUGO | S_IWUSR,                    \
+                          _flags, ##__VA_ARGS__)
+
+#define AMDGPU_DEVICE_ATTR_RO(_name, _flags, ...)                      \
+       __AMDGPU_DEVICE_ATTR(_name, S_IRUGO,                            \
+                            amdgpu_get_##_name, NULL,                  \
+                            _flags, ##__VA_ARGS__)
+
 void amdgpu_pm_acpi_event_handler(struct amdgpu_device *adev);
 int amdgpu_pm_sysfs_init(struct amdgpu_device *adev);
 int amdgpu_pm_virt_sysfs_init(struct amdgpu_device *adev);
-- 
2.17.1

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