diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 6 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_huc.c | 25 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_huc.h | 1 |
3 files changed, 29 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 3f637ab89e51..a7d3275f45d2 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -377,9 +377,9 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data, value = INTEL_INFO(dev_priv)->sseu.min_eu_in_pool; break; case I915_PARAM_HUC_STATUS: - intel_runtime_pm_get(dev_priv); - value = I915_READ(HUC_STATUS2) & HUC_FW_VERIFIED; - intel_runtime_pm_put(dev_priv); + value = intel_huc_check_status(&dev_priv->huc); + if (value < 0) + return value; break; case I915_PARAM_MMAP_GTT_VERSION: /* Though we've started our numbering from 1, and so class all diff --git a/drivers/gpu/drm/i915/intel_huc.c b/drivers/gpu/drm/i915/intel_huc.c index 1d6c47b17935..291285277403 100644 --- a/drivers/gpu/drm/i915/intel_huc.c +++ b/drivers/gpu/drm/i915/intel_huc.c @@ -92,3 +92,28 @@ fail: DRM_ERROR("HuC: Authentication failed %d\n", ret); return ret; } + +/** + * intel_huc_check_status() - check HuC status + * @huc: intel_huc structure + * + * This function reads status register to verify if HuC + * firmware was successfully loaded. + * + * Returns positive value if HuC firmware is loaded and verified + * and -ENODEV if HuC is not present. + */ +int intel_huc_check_status(struct intel_huc *huc) +{ + struct drm_i915_private *dev_priv = huc_to_i915(huc); + u32 status; + + if (!HAS_HUC(dev_priv)) + return -ENODEV; + + intel_runtime_pm_get(dev_priv); + status = I915_READ(HUC_STATUS2) & HUC_FW_VERIFIED; + intel_runtime_pm_put(dev_priv); + + return status; +} diff --git a/drivers/gpu/drm/i915/intel_huc.h b/drivers/gpu/drm/i915/intel_huc.h index b1858503c451..aa854907abac 100644 --- a/drivers/gpu/drm/i915/intel_huc.h +++ b/drivers/gpu/drm/i915/intel_huc.h @@ -37,6 +37,7 @@ struct intel_huc { void intel_huc_init_early(struct intel_huc *huc); int intel_huc_auth(struct intel_huc *huc); +int intel_huc_check_status(struct intel_huc *huc); static inline int intel_huc_sanitize(struct intel_huc *huc) { |