@@ -225,19 +225,22 @@ void intel_huc_init_hw(struct intel_huc *huc)
}
/**
- * intel_guc_auth_huc() - authenticate ucode
- * @dev_priv: the drm_i915_device
+ * intel_huc_auth() - Authenticate HuC uCode
+ * @huc: intel_huc structure
+ *
+ * Called after HuC and GuC firmware loading during intel_uc_init_hw().
*
- * Triggers a HuC fw authentication request to the GuC via intel_guc_action_
- * authenticate_huc interface.
+ * This function pins HuC firmware image object into GGTT.
+ * Then it invokes GuC action to authenticate passing the offset to RSA
+ * signature through intel_guc_auth_huc(). It then waits for 50ms for
+ * firmware verification ACK and unpins the object.
*/
-void intel_guc_auth_huc(struct drm_i915_private *dev_priv)
+void intel_huc_auth(struct intel_huc *huc)
{
- struct intel_guc *guc = &dev_priv->guc;
- struct intel_huc *huc = &dev_priv->huc;
+ struct drm_i915_private *i915 = huc_to_i915(huc);
+ struct intel_guc *guc = &i915->guc;
struct i915_vma *vma;
int ret;
- u32 data[2];
if (huc->fw.load_status != INTEL_UC_FIRMWARE_SUCCESS)
return;
@@ -250,23 +253,19 @@ void intel_guc_auth_huc(struct drm_i915_private *dev_priv)
return;
}
- /* Specify auth action and where public signature is. */
- data[0] = INTEL_GUC_ACTION_AUTHENTICATE_HUC;
- data[1] = guc_ggtt_offset(vma) + huc->fw.rsa_offset;
-
- ret = intel_guc_send(guc, data, ARRAY_SIZE(data));
+ ret = intel_guc_auth_huc(guc,
+ guc_ggtt_offset(vma) + huc->fw.rsa_offset);
if (ret) {
DRM_ERROR("HuC: GuC did not ack Auth request %d\n", ret);
goto out;
}
/* Check authentication status, it should be done by now */
- ret = intel_wait_for_register(dev_priv,
- HUC_STATUS2,
- HUC_FW_VERIFIED,
- HUC_FW_VERIFIED,
- 50);
-
+ ret = intel_wait_for_register(i915,
+ HUC_STATUS2,
+ HUC_FW_VERIFIED,
+ HUC_FW_VERIFIED,
+ 50);
if (ret) {
DRM_ERROR("HuC: Authentication failed %d\n", ret);
goto out;
@@ -275,4 +274,3 @@ void intel_guc_auth_huc(struct drm_i915_private *dev_priv)
out:
i915_vma_unpin(vma);
}
-
@@ -328,6 +328,27 @@ static void guc_disable_communication(struct intel_guc *guc)
guc->send = intel_guc_send_nop;
}
+/**
+ * intel_guc_auth_huc() - Send action to GuC to authenticate HuC ucode
+ * @guc: intel_guc structure
+ * @rsa_offset: rsa offset w.r.t ggtt base of huc vma
+ *
+ * Triggers a HuC firmware authentication request to the GuC via intel_guc_send
+ * INTEL_GUC_ACTION_AUTHENTICATE_HUC interface. This function is invoked by
+ * intel_huc_auth().
+ *
+ * Return: non-zero code on error
+ */
+int intel_guc_auth_huc(struct intel_guc *guc, u32 rsa_offset)
+{
+ u32 action[] = {
+ INTEL_GUC_ACTION_AUTHENTICATE_HUC,
+ rsa_offset
+ };
+
+ return intel_guc_send(guc, action, ARRAY_SIZE(action));
+}
+
int intel_uc_init_hw(struct drm_i915_private *dev_priv)
{
struct intel_guc *guc = &dev_priv->guc;
@@ -390,7 +411,7 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
if (ret)
goto err_log_capture;
- intel_guc_auth_huc(dev_priv);
+ intel_huc_auth(&dev_priv->huc);
if (i915_modparams.enable_guc_submission) {
if (i915_modparams.guc_log_level >= 0)
gen9_enable_guc_interrupts(dev_priv);
@@ -211,6 +211,7 @@ struct intel_huc {
int intel_guc_sample_forcewake(struct intel_guc *guc);
int intel_guc_send_nop(struct intel_guc *guc, const u32 *action, u32 len);
int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len);
+int intel_guc_auth_huc(struct intel_guc *guc, u32 rsa_offset);
static inline int intel_guc_send(struct intel_guc *guc, const u32 *action, u32 len)
{
@@ -254,6 +255,6 @@ static inline u32 guc_ggtt_offset(struct i915_vma *vma)
/* intel_huc.c */
void intel_huc_select_fw(struct intel_huc *huc);
void intel_huc_init_hw(struct intel_huc *huc);
-void intel_guc_auth_huc(struct drm_i915_private *dev_priv);
+void intel_huc_auth(struct intel_huc *huc);
#endif