diff options
Diffstat (limited to 'drivers/gpu/drm/amd/pm/amdgpu_pm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/pm/amdgpu_pm.c | 158 |
1 files changed, 148 insertions, 10 deletions
diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c index 4b64851fdb42..96590c1da553 100644 --- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c @@ -110,9 +110,10 @@ static int amdgpu_pm_dev_state_check(struct amdgpu_device *adev, bool runpm) bool runpm_check = runpm ? adev->in_runpm : false; if (amdgpu_in_reset(adev)) - return -EPERM; + return -EBUSY; + if (adev->in_suspend && !runpm_check) - return -EPERM; + return -EBUSY; return 0; } @@ -2073,6 +2074,134 @@ static int pp_dpm_clk_default_attr_update(struct amdgpu_device *adev, struct amd return 0; } +/** + * DOC: board + * + * Certain SOCs can support various board attributes reporting. This is useful + * for user application to monitor various board reated attributes. + * + * The amdgpu driver provides a sysfs API for reporting board attributes. Presently, + * only two types of attributes are reported, baseboard temperature and + * gpu board temperature. Both of them are reported as binary files. + * + * * .. code-block:: console + * + * hexdump /sys/bus/pci/devices/.../board/baseboard_temp + * + * hexdump /sys/bus/pci/devices/.../board/gpuboard_temp + * + */ + +/** + * DOC: baseboard_temp + * + * The amdgpu driver provides a sysfs API for retrieving current baseboard + * temperature metrics data. The file baseboard_temp is used for this. + * Reading the file will dump all the current baseboard temperature metrics data. + */ +static ssize_t amdgpu_get_baseboard_temp_metrics(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + struct amdgpu_device *adev = drm_to_adev(ddev); + ssize_t size; + int ret; + + ret = amdgpu_pm_get_access_if_active(adev); + if (ret) + return ret; + + size = amdgpu_dpm_get_temp_metrics(adev, SMU_TEMP_METRIC_BASEBOARD, NULL); + if (size <= 0) + goto out; + if (size >= PAGE_SIZE) { + ret = -ENOSPC; + goto out; + } + + amdgpu_dpm_get_temp_metrics(adev, SMU_TEMP_METRIC_BASEBOARD, buf); + +out: + amdgpu_pm_put_access(adev); + + if (ret) + return ret; + + return size; +} + +/** + * DOC: gpuboard_temp + * + * The amdgpu driver provides a sysfs API for retrieving current gpuboard + * temperature metrics data. The file gpuboard_temp is used for this. + * Reading the file will dump all the current gpuboard temperature metrics data. + */ +static ssize_t amdgpu_get_gpuboard_temp_metrics(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + struct amdgpu_device *adev = drm_to_adev(ddev); + ssize_t size; + int ret; + + ret = amdgpu_pm_get_access_if_active(adev); + if (ret) + return ret; + + size = amdgpu_dpm_get_temp_metrics(adev, SMU_TEMP_METRIC_GPUBOARD, NULL); + if (size <= 0) + goto out; + if (size >= PAGE_SIZE) { + ret = -ENOSPC; + goto out; + } + + amdgpu_dpm_get_temp_metrics(adev, SMU_TEMP_METRIC_GPUBOARD, buf); + +out: + amdgpu_pm_put_access(adev); + + if (ret) + return ret; + + return size; +} + +static DEVICE_ATTR(baseboard_temp, 0444, amdgpu_get_baseboard_temp_metrics, NULL); +static DEVICE_ATTR(gpuboard_temp, 0444, amdgpu_get_gpuboard_temp_metrics, NULL); + +static struct attribute *board_attrs[] = { + &dev_attr_baseboard_temp.attr, + &dev_attr_gpuboard_temp.attr, + NULL +}; + +static umode_t amdgpu_board_attr_visible(struct kobject *kobj, struct attribute *attr, int n) +{ + struct device *dev = kobj_to_dev(kobj); + struct drm_device *ddev = dev_get_drvdata(dev); + struct amdgpu_device *adev = drm_to_adev(ddev); + + if (attr == &dev_attr_baseboard_temp.attr) { + if (!amdgpu_dpm_is_temp_metrics_supported(adev, SMU_TEMP_METRIC_BASEBOARD)) + return 0; + } + + if (attr == &dev_attr_gpuboard_temp.attr) { + if (!amdgpu_dpm_is_temp_metrics_supported(adev, SMU_TEMP_METRIC_GPUBOARD)) + return 0; + } + + return attr->mode; +} + +const struct attribute_group amdgpu_board_attr_group = { + .name = "board", + .attrs = board_attrs, + .is_visible = amdgpu_board_attr_visible, +}; + /* pm policy attributes */ struct amdgpu_pm_policy_attr { struct device_attribute dev_attr; @@ -3458,14 +3587,16 @@ static umode_t hwmon_attributes_visible(struct kobject *kobj, effective_mode &= ~S_IWUSR; /* not implemented yet for APUs other than GC 10.3.1 (vangogh) and 9.4.3 */ - if (((adev->family == AMDGPU_FAMILY_SI) || - ((adev->flags & AMD_IS_APU) && (gc_ver != IP_VERSION(10, 3, 1)) && - (gc_ver != IP_VERSION(9, 4, 3) && gc_ver != IP_VERSION(9, 4, 4)))) && - (attr == &sensor_dev_attr_power1_cap_max.dev_attr.attr || - attr == &sensor_dev_attr_power1_cap_min.dev_attr.attr || - attr == &sensor_dev_attr_power1_cap.dev_attr.attr || - attr == &sensor_dev_attr_power1_cap_default.dev_attr.attr)) - return 0; + if (attr == &sensor_dev_attr_power1_cap_max.dev_attr.attr || + attr == &sensor_dev_attr_power1_cap_min.dev_attr.attr || + attr == &sensor_dev_attr_power1_cap.dev_attr.attr || + attr == &sensor_dev_attr_power1_cap_default.dev_attr.attr) { + if (adev->family == AMDGPU_FAMILY_SI || + ((adev->flags & AMD_IS_APU) && gc_ver != IP_VERSION(10, 3, 1) && + (gc_ver != IP_VERSION(9, 4, 3) && gc_ver != IP_VERSION(9, 4, 4))) || + (amdgpu_sriov_vf(adev) && gc_ver == IP_VERSION(11, 0, 3))) + return 0; + } /* not implemented yet for APUs having < GC 9.3.0 (Renoir) */ if (((adev->family == AMDGPU_FAMILY_SI) || @@ -4461,6 +4592,13 @@ int amdgpu_pm_sysfs_init(struct amdgpu_device *adev) goto err_out0; } + if (amdgpu_dpm_is_temp_metrics_supported(adev, SMU_TEMP_METRIC_GPUBOARD)) { + ret = devm_device_add_group(adev->dev, + &amdgpu_board_attr_group); + if (ret) + goto err_out0; + } + adev->pm.sysfs_initialized = true; return 0; |