<Ping as the fix with second patch is a bit urgent>
On 2/4/2025 12:08 PM, Lijo Lazar wrote:
> Wrap the checks before device access in helper functions and use them
> for device access. The generic order of APIs now is to do input argument
> validation first and check if device access is allowed.
>
> Signed-off-by: Lijo Lazar <lijo.la...@amd.com>
> ---
> drivers/gpu/drm/amd/pm/amdgpu_pm.c | 616 +++++++++++------------------
> 1 file changed, 229 insertions(+), 387 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
> b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
> index 0aca0803514e..0fe0b798f559 100644
> --- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
> +++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
> @@ -97,6 +97,77 @@ const char * const amdgpu_pp_profile_name[] = {
> "UNCAPPED",
> };
>
> +/**
> + * amdgpu_pm_dev_state_check - Check if device can be accessed.
> + * @adev: Target device.
> + *
> + * Checks the state of the @adev for access. Return 0 if the device is
> + * accessible or a negative error code otherwise.
> + */
> +static int amdgpu_pm_dev_state_check(struct amdgpu_device *adev)
> +{
> + if (amdgpu_in_reset(adev))
> + return -EPERM;
> + if (adev->in_suspend && !adev->in_runpm)
> + return -EPERM;
> +
> + return 0;
> +}
> +
> +/**
> + * amdgpu_pm_get_access - Check if device can be accessed, resume if needed.
> + * @adev: Target device.
> + *
> + * Checks the state of the @adev for access. Use runtime pm API to resume if
> + * needed. Return 0 if the device is accessible or a negative error code
> + * otherwise.
> + */
> +static int amdgpu_pm_get_access(struct amdgpu_device *adev)
> +{
> + int ret;
> +
> + ret = amdgpu_pm_dev_state_check(adev);
> + if (ret)
> + return ret;
> +
> + return pm_runtime_resume_and_get(adev->dev);
> +}
> +
> +/**
> + * amdgpu_pm_get_access_if_active - Check if device is active for access.
> + * @adev: Target device.
> + *
> + * Checks the state of the @adev for access. Use runtime pm API to determine
> + * if device is active. Allow access only if device is active.Return 0 if the
> + * device is accessible or a negative error code otherwise.
> + */
> +static int amdgpu_pm_get_access_if_active(struct amdgpu_device *adev)
> +{
> + int ret;
> +
> + ret = amdgpu_pm_dev_state_check(adev);
> + if (ret)
> + return ret;
> +
> + ret = pm_runtime_get_if_active(adev->dev);
> + if (ret <= 0)
> + return ret ?: -EPERM;
> +
> + return 0;
> +}
> +
> +/**
> + * amdgpu_pm_put_access - Put to auto suspend mode after a device access.
> + * @adev: Target device.
> + *
> + * Should be paired with amdgpu_pm_get_access* calls
> + */
> +static inline void amdgpu_pm_put_access(struct amdgpu_device *adev)
> +{
> + pm_runtime_mark_last_busy(adev->dev);
> + pm_runtime_put_autosuspend(adev->dev);
> +}
> +
> /**
> * DOC: power_dpm_state
> *
> @@ -140,18 +211,13 @@ static ssize_t amdgpu_get_power_dpm_state(struct device
> *dev,
> enum amd_pm_state_type pm;
> int ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - ret = pm_runtime_get_if_active(ddev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> amdgpu_dpm_get_current_power_state(adev, &pm);
>
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return sysfs_emit(buf, "%s\n",
> (pm == POWER_STATE_TYPE_BATTERY) ? "battery" :
> @@ -168,11 +234,6 @@ static ssize_t amdgpu_set_power_dpm_state(struct device
> *dev,
> enum amd_pm_state_type state;
> int ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> if (strncmp("battery", buf, strlen("battery")) == 0)
> state = POWER_STATE_TYPE_BATTERY;
> else if (strncmp("balanced", buf, strlen("balanced")) == 0)
> @@ -182,14 +243,13 @@ static ssize_t amdgpu_set_power_dpm_state(struct device
> *dev,
> else
> return -EINVAL;
>
> - ret = pm_runtime_resume_and_get(ddev->dev);
> + ret = amdgpu_pm_get_access(adev);
> if (ret < 0)
> return ret;
>
> amdgpu_dpm_set_power_state(adev, state);
>
> - pm_runtime_mark_last_busy(ddev->dev);
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return count;
> }
> @@ -263,18 +323,13 @@ static ssize_t
> amdgpu_get_power_dpm_force_performance_level(struct device *dev,
> enum amd_dpm_forced_level level = 0xff;
> int ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - ret = pm_runtime_get_if_active(ddev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> level = amdgpu_dpm_get_performance_level(adev);
>
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return sysfs_emit(buf, "%s\n",
> (level == AMD_DPM_FORCED_LEVEL_AUTO) ? "auto" :
> @@ -299,11 +354,6 @@ static ssize_t
> amdgpu_set_power_dpm_force_performance_level(struct device *dev,
> enum amd_dpm_forced_level level;
> int ret = 0;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> if (strncmp("low", buf, strlen("low")) == 0) {
> level = AMD_DPM_FORCED_LEVEL_LOW;
> } else if (strncmp("high", buf, strlen("high")) == 0) {
> @@ -328,14 +378,13 @@ static ssize_t
> amdgpu_set_power_dpm_force_performance_level(struct device *dev,
> return -EINVAL;
> }
>
> - ret = pm_runtime_resume_and_get(ddev->dev);
> + ret = amdgpu_pm_get_access(adev);
> if (ret < 0)
> return ret;
>
> mutex_lock(&adev->pm.stable_pstate_ctx_lock);
> if (amdgpu_dpm_force_performance_level(adev, level)) {
> - pm_runtime_mark_last_busy(ddev->dev);
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
> mutex_unlock(&adev->pm.stable_pstate_ctx_lock);
> return -EINVAL;
> }
> @@ -343,8 +392,7 @@ static ssize_t
> amdgpu_set_power_dpm_force_performance_level(struct device *dev,
> adev->pm.stable_pstate_ctx = NULL;
> mutex_unlock(&adev->pm.stable_pstate_ctx_lock);
>
> - pm_runtime_mark_last_busy(ddev->dev);
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return count;
> }
> @@ -359,19 +407,14 @@ static ssize_t amdgpu_get_pp_num_states(struct device
> *dev,
> uint32_t i;
> int buf_len, ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - ret = pm_runtime_get_if_active(ddev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> if (amdgpu_dpm_get_pp_num_states(adev, &data))
> memset(&data, 0, sizeof(data));
>
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> buf_len = sysfs_emit(buf, "states: %d\n", data.nums);
> for (i = 0; i < data.nums; i++)
> @@ -394,20 +437,15 @@ static ssize_t amdgpu_get_pp_cur_state(struct device
> *dev,
> enum amd_pm_state_type pm = 0;
> int i = 0, ret = 0;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - ret = pm_runtime_get_if_active(ddev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> amdgpu_dpm_get_current_power_state(adev, &pm);
>
> ret = amdgpu_dpm_get_pp_num_states(adev, &data);
>
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> if (ret)
> return ret;
> @@ -429,11 +467,11 @@ static ssize_t amdgpu_get_pp_force_state(struct device
> *dev,
> {
> struct drm_device *ddev = dev_get_drvdata(dev);
> struct amdgpu_device *adev = drm_to_adev(ddev);
> + int ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> + ret = amdgpu_pm_dev_state_check(adev);
> + if (ret)
> + return ret;
>
> if (adev->pm.pp_force_state_enabled)
> return amdgpu_get_pp_cur_state(dev, attr, buf);
> @@ -453,11 +491,6 @@ static ssize_t amdgpu_set_pp_force_state(struct device
> *dev,
> unsigned long idx;
> int ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> adev->pm.pp_force_state_enabled = false;
>
> if (strlen(buf) == 1)
> @@ -469,7 +502,7 @@ static ssize_t amdgpu_set_pp_force_state(struct device
> *dev,
>
> idx = array_index_nospec(idx, ARRAY_SIZE(data.states));
>
> - ret = pm_runtime_resume_and_get(ddev->dev);
> + ret = amdgpu_pm_get_access(adev);
> if (ret < 0)
> return ret;
>
> @@ -490,14 +523,13 @@ static ssize_t amdgpu_set_pp_force_state(struct device
> *dev,
> adev->pm.pp_force_state_enabled = true;
> }
>
> - pm_runtime_mark_last_busy(ddev->dev);
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return count;
>
> err_out:
> - pm_runtime_mark_last_busy(ddev->dev);
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
> +
> return ret;
> }
>
> @@ -521,18 +553,13 @@ static ssize_t amdgpu_get_pp_table(struct device *dev,
> char *table = NULL;
> int size, ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - ret = pm_runtime_get_if_active(ddev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> size = amdgpu_dpm_get_pp_table(adev, &table);
>
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> if (size <= 0)
> return size;
> @@ -554,19 +581,13 @@ static ssize_t amdgpu_set_pp_table(struct device *dev,
> struct amdgpu_device *adev = drm_to_adev(ddev);
> int ret = 0;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - ret = pm_runtime_resume_and_get(ddev->dev);
> + ret = amdgpu_pm_get_access(adev);
> if (ret < 0)
> return ret;
>
> ret = amdgpu_dpm_set_pp_table(adev, buf, count);
>
> - pm_runtime_mark_last_busy(ddev->dev);
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> if (ret)
> return ret;
> @@ -735,11 +756,6 @@ static ssize_t amdgpu_set_pp_od_clk_voltage(struct
> device *dev,
> const char delimiter[3] = {' ', '\n', '\0'};
> uint32_t type;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> if (count > 127 || count == 0)
> return -EINVAL;
>
> @@ -785,7 +801,7 @@ static ssize_t amdgpu_set_pp_od_clk_voltage(struct device
> *dev,
> tmp_str++;
> }
>
> - ret = pm_runtime_resume_and_get(ddev->dev);
> + ret = amdgpu_pm_get_access(adev);
> if (ret < 0)
> return ret;
>
> @@ -806,14 +822,13 @@ static ssize_t amdgpu_set_pp_od_clk_voltage(struct
> device *dev,
> goto err_out;
> }
>
> - pm_runtime_mark_last_busy(ddev->dev);
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return count;
>
> err_out:
> - pm_runtime_mark_last_busy(ddev->dev);
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
> +
> return -EINVAL;
> }
>
> @@ -835,14 +850,9 @@ static ssize_t amdgpu_get_pp_od_clk_voltage(struct
> device *dev,
> };
> uint clk_index;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - ret = pm_runtime_get_if_active(ddev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> for (clk_index = 0 ; clk_index < 6 ; clk_index++) {
> ret = amdgpu_dpm_emit_clock_levels(adev, od_clocks[clk_index],
> buf, &size);
> @@ -861,7 +871,7 @@ static ssize_t amdgpu_get_pp_od_clk_voltage(struct device
> *dev,
> if (size == 0)
> size = sysfs_emit(buf, "\n");
>
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return size;
> }
> @@ -892,23 +902,17 @@ static ssize_t amdgpu_set_pp_features(struct device
> *dev,
> uint64_t featuremask;
> int ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> ret = kstrtou64(buf, 0, &featuremask);
> if (ret)
> return -EINVAL;
>
> - ret = pm_runtime_resume_and_get(ddev->dev);
> + ret = amdgpu_pm_get_access(adev);
> if (ret < 0)
> return ret;
>
> ret = amdgpu_dpm_set_ppfeature_status(adev, featuremask);
>
> - pm_runtime_mark_last_busy(ddev->dev);
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> if (ret)
> return -EINVAL;
> @@ -925,20 +929,15 @@ static ssize_t amdgpu_get_pp_features(struct device
> *dev,
> ssize_t size;
> int ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - ret = pm_runtime_get_if_active(ddev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> size = amdgpu_dpm_get_ppfeature_status(adev, buf);
> if (size <= 0)
> size = sysfs_emit(buf, "\n");
>
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return size;
> }
> @@ -991,14 +990,9 @@ static ssize_t amdgpu_get_pp_dpm_clock(struct device
> *dev,
> int size = 0;
> int ret = 0;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - ret = pm_runtime_get_if_active(ddev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> ret = amdgpu_dpm_emit_clock_levels(adev, type, buf, &size);
> if (ret == -ENOENT)
> @@ -1007,7 +1001,7 @@ static ssize_t amdgpu_get_pp_dpm_clock(struct device
> *dev,
> if (size == 0)
> size = sysfs_emit(buf, "\n");
>
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return size;
> }
> @@ -1057,23 +1051,17 @@ static ssize_t amdgpu_set_pp_dpm_clock(struct device
> *dev,
> int ret;
> uint32_t mask = 0;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> ret = amdgpu_read_mask(buf, count, &mask);
> if (ret)
> return ret;
>
> - ret = pm_runtime_resume_and_get(ddev->dev);
> + ret = amdgpu_pm_get_access(adev);
> if (ret < 0)
> return ret;
>
> ret = amdgpu_dpm_force_clock_level(adev, type, mask);
>
> - pm_runtime_mark_last_busy(ddev->dev);
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> if (ret)
> return -EINVAL;
> @@ -1240,18 +1228,13 @@ static ssize_t amdgpu_get_pp_sclk_od(struct device
> *dev,
> uint32_t value = 0;
> int ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - ret = pm_runtime_get_if_active(ddev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> value = amdgpu_dpm_get_sclk_od(adev);
>
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return sysfs_emit(buf, "%d\n", value);
> }
> @@ -1266,24 +1249,18 @@ static ssize_t amdgpu_set_pp_sclk_od(struct device
> *dev,
> int ret;
> long int value;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> ret = kstrtol(buf, 0, &value);
>
> if (ret)
> return -EINVAL;
>
> - ret = pm_runtime_resume_and_get(ddev->dev);
> + ret = amdgpu_pm_get_access(adev);
> if (ret < 0)
> return ret;
>
> amdgpu_dpm_set_sclk_od(adev, (uint32_t)value);
>
> - pm_runtime_mark_last_busy(ddev->dev);
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return count;
> }
> @@ -1297,18 +1274,13 @@ static ssize_t amdgpu_get_pp_mclk_od(struct device
> *dev,
> uint32_t value = 0;
> int ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - ret = pm_runtime_get_if_active(ddev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> value = amdgpu_dpm_get_mclk_od(adev);
>
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return sysfs_emit(buf, "%d\n", value);
> }
> @@ -1323,24 +1295,18 @@ static ssize_t amdgpu_set_pp_mclk_od(struct device
> *dev,
> int ret;
> long int value;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> ret = kstrtol(buf, 0, &value);
>
> if (ret)
> return -EINVAL;
>
> - ret = pm_runtime_resume_and_get(ddev->dev);
> + ret = amdgpu_pm_get_access(adev);
> if (ret < 0)
> return ret;
>
> amdgpu_dpm_set_mclk_od(adev, (uint32_t)value);
>
> - pm_runtime_mark_last_busy(ddev->dev);
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return count;
> }
> @@ -1378,20 +1344,15 @@ static ssize_t
> amdgpu_get_pp_power_profile_mode(struct device *dev,
> ssize_t size;
> int ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - ret = pm_runtime_get_if_active(ddev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> size = amdgpu_dpm_get_power_profile_mode(adev, buf);
> if (size <= 0)
> size = sysfs_emit(buf, "\n");
>
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return size;
> }
> @@ -1414,11 +1375,6 @@ static ssize_t amdgpu_set_pp_power_profile_mode(struct
> device *dev,
> long int profile_mode = 0;
> const char delimiter[3] = {' ', '\n', '\0'};
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> tmp[0] = *(buf);
> tmp[1] = '\0';
> ret = kstrtol(tmp, 0, &profile_mode);
> @@ -1445,14 +1401,13 @@ static ssize_t
> amdgpu_set_pp_power_profile_mode(struct device *dev,
> }
> parameter[parameter_size] = profile_mode;
>
> - ret = pm_runtime_resume_and_get(ddev->dev);
> + ret = amdgpu_pm_get_access(adev);
> if (ret < 0)
> return ret;
>
> ret = amdgpu_dpm_set_power_profile_mode(adev, parameter,
> parameter_size);
>
> - pm_runtime_mark_last_busy(ddev->dev);
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> if (!ret)
> return count;
> @@ -1466,19 +1421,14 @@ static int amdgpu_hwmon_get_sensor_generic(struct
> amdgpu_device *adev,
> {
> int r, size = sizeof(uint32_t);
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - r = pm_runtime_get_if_active(adev->dev);
> - if (r <= 0)
> - return r ?: -EPERM;
> + r = amdgpu_pm_get_access_if_active(adev);
> + if (r)
> + return r;
>
> /* get the sensor value */
> r = amdgpu_dpm_read_sensor(adev, sensor, query, &size);
>
> - pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
> + amdgpu_pm_put_access(adev);
>
> return r;
> }
> @@ -1576,24 +1526,19 @@ static ssize_t amdgpu_get_pcie_bw(struct device *dev,
> uint64_t count0 = 0, count1 = 0;
> int ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> if (adev->flags & AMD_IS_APU)
> return -ENODATA;
>
> if (!adev->asic_funcs->get_pcie_usage)
> return -ENODATA;
>
> - ret = pm_runtime_get_if_active(ddev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> amdgpu_asic_get_pcie_usage(adev, &count0, &count1);
>
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return sysfs_emit(buf, "%llu %llu %i\n",
> count0, count1, pcie_get_mps(adev->pdev));
> @@ -1615,12 +1560,11 @@ static ssize_t amdgpu_get_unique_id(struct device
> *dev,
> {
> struct drm_device *ddev = dev_get_drvdata(dev);
> struct amdgpu_device *adev = drm_to_adev(ddev);
> + int r;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> + r = amdgpu_pm_dev_state_check(adev);
> + if (r)
> + return r;
> if (adev->unique_id)
> return sysfs_emit(buf, "%016llx\n", adev->unique_id);
>
> @@ -1715,9 +1659,9 @@ static ssize_t amdgpu_get_apu_thermal_cap(struct device
> *dev,
> struct drm_device *ddev = dev_get_drvdata(dev);
> struct amdgpu_device *adev = drm_to_adev(ddev);
>
> - ret = pm_runtime_get_if_active(ddev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> ret = amdgpu_dpm_get_apu_thermal_limit(adev, &limit);
> if (!ret)
> @@ -1725,7 +1669,7 @@ static ssize_t amdgpu_get_apu_thermal_cap(struct device
> *dev,
> else
> size = sysfs_emit(buf, "failed to get thermal limit\n");
>
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return size;
> }
> @@ -1749,20 +1693,18 @@ static ssize_t amdgpu_set_apu_thermal_cap(struct
> device *dev,
> return -EINVAL;
> }
>
> - ret = pm_runtime_resume_and_get(ddev->dev);
> + ret = amdgpu_pm_get_access(adev);
> if (ret < 0)
> return ret;
>
> ret = amdgpu_dpm_set_apu_thermal_limit(adev, value);
> if (ret) {
> - pm_runtime_mark_last_busy(ddev->dev);
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
> dev_err(dev, "failed to update thermal limit\n");
> return ret;
> }
>
> - pm_runtime_mark_last_busy(ddev->dev);
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return count;
> }
> @@ -1786,18 +1728,13 @@ static ssize_t amdgpu_get_pm_metrics(struct device
> *dev,
> ssize_t size = 0;
> int ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - ret = pm_runtime_get_if_active(ddev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> size = amdgpu_dpm_get_pm_metrics(adev, buf, PAGE_SIZE);
>
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return size;
> }
> @@ -1824,14 +1761,9 @@ static ssize_t amdgpu_get_gpu_metrics(struct device
> *dev,
> ssize_t size = 0;
> int ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - ret = pm_runtime_get_if_active(ddev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> size = amdgpu_dpm_get_gpu_metrics(adev, &gpu_metrics);
> if (size <= 0)
> @@ -1843,7 +1775,7 @@ static ssize_t amdgpu_get_gpu_metrics(struct device
> *dev,
> memcpy(buf, gpu_metrics, size);
>
> out:
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> return size;
> }
> @@ -1939,19 +1871,14 @@ static ssize_t amdgpu_set_smartshift_bias(struct
> device *dev,
> int r = 0;
> int bias = 0;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - r = pm_runtime_resume_and_get(ddev->dev);
> - if (r < 0)
> - return r;
> -
> r = kstrtoint(buf, 10, &bias);
> if (r)
> goto out;
>
> + r = amdgpu_pm_get_access(adev);
> + if (r < 0)
> + return r;
> +
> if (bias > AMDGPU_SMARTSHIFT_MAX_BIAS)
> bias = AMDGPU_SMARTSHIFT_MAX_BIAS;
> else if (bias < AMDGPU_SMARTSHIFT_MIN_BIAS)
> @@ -1963,8 +1890,8 @@ static ssize_t amdgpu_set_smartshift_bias(struct device
> *dev,
> /* TODO: update bias level with SMU message */
>
> out:
> - pm_runtime_mark_last_busy(ddev->dev);
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
> +
> return r;
> }
>
> @@ -2218,14 +2145,14 @@ static ssize_t amdgpu_get_pm_policy_attr(struct
> device *dev,
> struct drm_device *ddev = dev_get_drvdata(dev);
> struct amdgpu_device *adev = drm_to_adev(ddev);
> struct amdgpu_pm_policy_attr *policy_attr;
> + int r;
>
> policy_attr =
> container_of(attr, struct amdgpu_pm_policy_attr, dev_attr);
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> + r = amdgpu_pm_dev_state_check(adev);
> + if (r)
> + return r;
>
> return amdgpu_dpm_get_pm_policy_info(adev, policy_attr->id, buf);
> }
> @@ -2243,11 +2170,6 @@ static ssize_t amdgpu_set_pm_policy_attr(struct device
> *dev,
> char *tmp, *param;
> long val;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> count = min(count, sizeof(tmp_buf));
> memcpy(tmp_buf, buf, count);
> tmp_buf[count - 1] = '\0';
> @@ -2273,14 +2195,13 @@ static ssize_t amdgpu_set_pm_policy_attr(struct
> device *dev,
> policy_attr =
> container_of(attr, struct amdgpu_pm_policy_attr, dev_attr);
>
> - ret = pm_runtime_resume_and_get(ddev->dev);
> + ret = amdgpu_pm_get_access(adev);
> if (ret < 0)
> return ret;
>
> ret = amdgpu_dpm_set_pm_policy(adev, policy_attr->id, val);
>
> - pm_runtime_mark_last_busy(ddev->dev);
> - pm_runtime_put_autosuspend(ddev->dev);
> + amdgpu_pm_put_access(adev);
>
> if (ret)
> return ret;
> @@ -2704,18 +2625,13 @@ static ssize_t amdgpu_hwmon_get_pwm1_enable(struct
> device *dev,
> u32 pwm_mode = 0;
> int ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - ret = pm_runtime_get_if_active(adev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> ret = amdgpu_dpm_get_fan_control_mode(adev, &pwm_mode);
>
> - pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
> + amdgpu_pm_put_access(adev);
>
> if (ret)
> return -EINVAL;
> @@ -2733,11 +2649,6 @@ static ssize_t amdgpu_hwmon_set_pwm1_enable(struct
> device *dev,
> u32 pwm_mode;
> int value;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> err = kstrtoint(buf, 10, &value);
> if (err)
> return err;
> @@ -2751,14 +2662,13 @@ static ssize_t amdgpu_hwmon_set_pwm1_enable(struct
> device *dev,
> else
> return -EINVAL;
>
> - ret = pm_runtime_resume_and_get(adev->dev);
> + ret = amdgpu_pm_get_access(adev);
> if (ret < 0)
> return ret;
>
> ret = amdgpu_dpm_set_fan_control_mode(adev, pwm_mode);
>
> - pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
> - pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
> + amdgpu_pm_put_access(adev);
>
> if (ret)
> return -EINVAL;
> @@ -2789,16 +2699,11 @@ static ssize_t amdgpu_hwmon_set_pwm1(struct device
> *dev,
> u32 value;
> u32 pwm_mode;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> err = kstrtou32(buf, 10, &value);
> if (err)
> return err;
>
> - err = pm_runtime_resume_and_get(adev->dev);
> + err = amdgpu_pm_get_access(adev);
> if (err < 0)
> return err;
>
> @@ -2815,8 +2720,7 @@ static ssize_t amdgpu_hwmon_set_pwm1(struct device *dev,
> err = amdgpu_dpm_set_fan_speed_pwm(adev, value);
>
> out:
> - pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
> - pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
> + amdgpu_pm_put_access(adev);
>
> if (err)
> return err;
> @@ -2832,18 +2736,13 @@ static ssize_t amdgpu_hwmon_get_pwm1(struct device
> *dev,
> int err;
> u32 speed = 0;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - err = pm_runtime_get_if_active(adev->dev);
> - if (err <= 0)
> - return err ?: -EPERM;
> + err = amdgpu_pm_get_access_if_active(adev);
> + if (err)
> + return err;
>
> err = amdgpu_dpm_get_fan_speed_pwm(adev, &speed);
>
> - pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
> + amdgpu_pm_put_access(adev);
>
> if (err)
> return err;
> @@ -2859,18 +2758,13 @@ static ssize_t amdgpu_hwmon_get_fan1_input(struct
> device *dev,
> int err;
> u32 speed = 0;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - err = pm_runtime_get_if_active(adev->dev);
> - if (err <= 0)
> - return err ?: -EPERM;
> + err = amdgpu_pm_get_access_if_active(adev);
> + if (err)
> + return err;
>
> err = amdgpu_dpm_get_fan_speed_rpm(adev, &speed);
>
> - pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
> + amdgpu_pm_put_access(adev);
>
> if (err)
> return err;
> @@ -2920,18 +2814,13 @@ static ssize_t amdgpu_hwmon_get_fan1_target(struct
> device *dev,
> int err;
> u32 rpm = 0;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - err = pm_runtime_get_if_active(adev->dev);
> - if (err <= 0)
> - return err ?: -EPERM;
> + err = amdgpu_pm_get_access_if_active(adev);
> + if (err)
> + return err;
>
> err = amdgpu_dpm_get_fan_speed_rpm(adev, &rpm);
>
> - pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
> + amdgpu_pm_put_access(adev);
>
> if (err)
> return err;
> @@ -2948,16 +2837,11 @@ static ssize_t amdgpu_hwmon_set_fan1_target(struct
> device *dev,
> u32 value;
> u32 pwm_mode;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> err = kstrtou32(buf, 10, &value);
> if (err)
> return err;
>
> - err = pm_runtime_resume_and_get(adev->dev);
> + err = amdgpu_pm_get_access(adev);
> if (err < 0)
> return err;
>
> @@ -2973,8 +2857,7 @@ static ssize_t amdgpu_hwmon_set_fan1_target(struct
> device *dev,
> err = amdgpu_dpm_set_fan_speed_rpm(adev, value);
>
> out:
> - pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
> - pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
> + amdgpu_pm_put_access(adev);
>
> if (err)
> return err;
> @@ -2990,18 +2873,13 @@ static ssize_t amdgpu_hwmon_get_fan1_enable(struct
> device *dev,
> u32 pwm_mode = 0;
> int ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - ret = pm_runtime_get_if_active(adev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> ret = amdgpu_dpm_get_fan_control_mode(adev, &pwm_mode);
>
> - pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
> + amdgpu_pm_put_access(adev);
>
> if (ret)
> return -EINVAL;
> @@ -3019,11 +2897,6 @@ static ssize_t amdgpu_hwmon_set_fan1_enable(struct
> device *dev,
> int value;
> u32 pwm_mode;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> err = kstrtoint(buf, 10, &value);
> if (err)
> return err;
> @@ -3035,14 +2908,13 @@ static ssize_t amdgpu_hwmon_set_fan1_enable(struct
> device *dev,
> else
> return -EINVAL;
>
> - err = pm_runtime_resume_and_get(adev->dev);
> + err = amdgpu_pm_get_access(adev);
> if (err < 0)
> return err;
>
> err = amdgpu_dpm_set_fan_control_mode(adev, pwm_mode);
>
> - pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
> - pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
> + amdgpu_pm_put_access(adev);
>
> if (err)
> return -EINVAL;
> @@ -3157,14 +3029,9 @@ static ssize_t
> amdgpu_hwmon_show_power_cap_generic(struct device *dev,
> ssize_t size;
> int r;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - r = pm_runtime_get_if_active(adev->dev);
> - if (r <= 0)
> - return r ?: -EPERM;
> + r = amdgpu_pm_get_access_if_active(adev);
> + if (r)
> + return r;
>
> r = amdgpu_dpm_get_power_limit(adev, &limit,
> pp_limit_level, power_type);
> @@ -3174,7 +3041,7 @@ static ssize_t
> amdgpu_hwmon_show_power_cap_generic(struct device *dev,
> else
> size = sysfs_emit(buf, "\n");
>
> - pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
> + amdgpu_pm_put_access(adev);
>
> return size;
> }
> @@ -3235,11 +3102,6 @@ static ssize_t amdgpu_hwmon_set_power_cap(struct
> device *dev,
> int err;
> u32 value;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> if (amdgpu_sriov_vf(adev))
> return -EINVAL;
>
> @@ -3250,14 +3112,13 @@ static ssize_t amdgpu_hwmon_set_power_cap(struct
> device *dev,
> value = value / 1000000; /* convert to Watt */
> value |= limit_type << 24;
>
> - err = pm_runtime_resume_and_get(adev->dev);
> + err = amdgpu_pm_get_access(adev);
> if (err < 0)
> return err;
>
> err = amdgpu_dpm_set_power_limit(adev, value);
>
> - pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
> - pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
> + amdgpu_pm_put_access(adev);
>
> if (err)
> return err;
> @@ -3695,20 +3556,15 @@ static int amdgpu_retrieve_od_settings(struct
> amdgpu_device *adev,
> int size = 0;
> int ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - ret = pm_runtime_get_if_active(adev->dev);
> - if (ret <= 0)
> - return ret ?: -EPERM;
> + ret = amdgpu_pm_get_access_if_active(adev);
> + if (ret)
> + return ret;
>
> size = amdgpu_dpm_print_clock_levels(adev, od_type, buf);
> if (size == 0)
> size = sysfs_emit(buf, "\n");
>
> - pm_runtime_put_autosuspend(adev->dev);
> + amdgpu_pm_put_access(adev);
>
> return size;
> }
> @@ -3776,11 +3632,6 @@ amdgpu_distribute_custom_od_settings(struct
> amdgpu_device *adev,
> long parameter[64];
> int ret;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> ret = parse_input_od_command_lines(in_buf,
> count,
> &cmd_type,
> @@ -3789,7 +3640,7 @@ amdgpu_distribute_custom_od_settings(struct
> amdgpu_device *adev,
> if (ret)
> return ret;
>
> - ret = pm_runtime_resume_and_get(adev->dev);
> + ret = amdgpu_pm_get_access(adev);
> if (ret < 0)
> return ret;
>
> @@ -3808,14 +3659,12 @@ amdgpu_distribute_custom_od_settings(struct
> amdgpu_device *adev,
> goto err_out;
> }
>
> - pm_runtime_mark_last_busy(adev->dev);
> - pm_runtime_put_autosuspend(adev->dev);
> + amdgpu_pm_put_access(adev);
>
> return count;
>
> err_out:
> - pm_runtime_mark_last_busy(adev->dev);
> - pm_runtime_put_autosuspend(adev->dev);
> + amdgpu_pm_put_access(adev);
>
> return ret;
> }
> @@ -4785,16 +4634,10 @@ static void amdgpu_parse_cg_state(struct seq_file *m,
> u64 flags)
> static int amdgpu_debugfs_pm_info_show(struct seq_file *m, void *unused)
> {
> struct amdgpu_device *adev = (struct amdgpu_device *)m->private;
> - struct drm_device *dev = adev_to_drm(adev);
> u64 flags = 0;
> int r;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> -
> - r = pm_runtime_resume_and_get(dev->dev);
> + r = amdgpu_pm_get_access(adev);
> if (r < 0)
> return r;
>
> @@ -4811,7 +4654,7 @@ static int amdgpu_debugfs_pm_info_show(struct seq_file
> *m, void *unused)
> seq_printf(m, "\n");
>
> out:
> - pm_runtime_put_autosuspend(dev->dev);
> + amdgpu_pm_put_access(adev);
>
> return r;
> }
> @@ -4831,10 +4674,9 @@ static ssize_t amdgpu_pm_prv_buffer_read(struct file
> *f, char __user *buf,
> void *smu_prv_buf;
> int ret = 0;
>
> - if (amdgpu_in_reset(adev))
> - return -EPERM;
> - if (adev->in_suspend && !adev->in_runpm)
> - return -EPERM;
> + ret = amdgpu_pm_dev_state_check(adev);
> + if (ret)
> + return ret;
>
> ret = amdgpu_dpm_get_smu_prv_buf_details(adev, &smu_prv_buf,
> &smu_prv_buf_size);
> if (ret)
