Merge "disp: msm: sde: add secure session flag in sde_crtc state"

2 files changed, 110 insertions, 14 deletions

diff --git a/msm/sde/sde_crtc.c b/msm/sde/sde_crtc.c
index 3a5988a5..696dbff2 100644
--- a/msm/sde/sde_crtc.c
+++ b/msm/sde/sde_crtc.c
@@ -1725,8 +1725,12 @@ int sde_crtc_state_find_plane_fb_modes(struct drm_crtc_state *state,
 
 static void _sde_drm_fb_sec_dir_trans(
 	struct sde_kms_smmu_state_data *smmu_state, uint32_t secure_level,
-	struct sde_mdss_cfg *catalog, bool old_valid_fb, int *ops)
+	struct sde_mdss_cfg *catalog, bool old_valid_fb, int *ops,
+	struct drm_crtc_state *old_crtc_state)
 {
+	struct sde_crtc_state *old_cstate = to_sde_crtc_state(old_crtc_state);
+	int old_secure_session = old_cstate->secure_session;
+
 	/* secure display usecase */
 	if ((smmu_state->state == ATTACHED)
 			&& (secure_level == SDE_DRM_SEC_ONLY)) {
@@ -1747,6 +1751,10 @@ static void _sde_drm_fb_sec_dir_trans(
 		smmu_state->secure_level = secure_level;
 		smmu_state->transition_type = PRE_COMMIT;
 		*ops |= SDE_KMS_OPS_SECURE_STATE_CHANGE;
+		if (old_secure_session ==
+			SDE_SECURE_VIDEO_SESSION)
+			*ops |= (SDE_KMS_OPS_WAIT_FOR_TX_DONE  |
+					SDE_KMS_OPS_CLEANUP_PLANE_FB);
 	}
 }
 
@@ -1872,7 +1880,7 @@ int sde_crtc_get_secure_transition_ops(struct drm_crtc *crtc,
 	switch (translation_mode) {
 	case SDE_DRM_FB_SEC_DIR_TRANS:
 		_sde_drm_fb_sec_dir_trans(smmu_state, secure_level,
-				catalog, old_valid_fb, &ops);
+			catalog, old_valid_fb, &ops, old_crtc_state);
 		if (clone_mode && (ops & SDE_KMS_OPS_SECURE_STATE_CHANGE))
 			ops |= SDE_KMS_OPS_WAIT_FOR_TX_DONE;
 		break;
@@ -4347,6 +4355,55 @@ static int _sde_crtc_check_secure_single_encoder(struct drm_crtc *crtc,
 	return 0;
 }
 
+static int _sde_crtc_check_secure_transition(struct drm_crtc *crtc,
+	struct drm_crtc_state *state, bool is_video_mode)
+{
+	struct sde_crtc_state *old_cstate = to_sde_crtc_state(crtc->state);
+	struct sde_crtc_state *new_cstate = to_sde_crtc_state(state);
+	int old_secure_session = old_cstate->secure_session;
+	int new_secure_session = new_cstate->secure_session;
+	int ret = 0;
+
+	/*
+	 * Direct transition from Secure Camera to Secure UI(&viceversa)
+	 * is not allowed
+	 */
+	if ((old_secure_session == SDE_SECURE_CAMERA_SESSION &&
+			new_secure_session == SDE_SECURE_UI_SESSION) ||
+		(old_secure_session == SDE_SECURE_UI_SESSION &&
+			new_secure_session == SDE_SECURE_CAMERA_SESSION)) {
+		SDE_EVT32(DRMID(crtc), old_secure_session,
+			new_secure_session, SDE_EVTLOG_ERROR);
+		ret = -EINVAL;
+	}
+
+	/*
+	 * In video mode, null commit is required for transition between
+	 * secure video & secure camera
+	 */
+	if (is_video_mode &&
+		((old_secure_session == SDE_SECURE_CAMERA_SESSION &&
+			new_secure_session == SDE_SECURE_VIDEO_SESSION) ||
+		(old_secure_session == SDE_SECURE_VIDEO_SESSION &&
+			new_secure_session == SDE_SECURE_CAMERA_SESSION))) {
+		SDE_EVT32(DRMID(crtc), old_secure_session,
+			new_secure_session, SDE_EVTLOG_ERROR);
+		ret = -EINVAL;
+	}
+
+	if (old_secure_session != new_secure_session)
+		SDE_EVT32(DRMID(crtc), old_secure_session,
+						new_secure_session);
+
+	SDE_DEBUG("old session: %d new session : %d\n",
+			old_secure_session, new_secure_session);
+	if (ret)
+		SDE_ERROR("invalid transition old:%d new:%d\n",
+			old_secure_session, new_secure_session);
+
+	return ret;
+}
+
 static int _sde_crtc_check_secure_state_smmu_translation(struct drm_crtc *crtc,
 	struct drm_crtc_state *state, struct sde_kms *sde_kms, int secure,
 	int fb_ns, int fb_sec, int fb_sec_dir)
@@ -4361,19 +4418,8 @@ static int _sde_crtc_check_secure_state_smmu_translation(struct drm_crtc *crtc,
 						MSM_DISPLAY_VIDEO_MODE);
 	}
 
-	/*
-	 * Secure display to secure camera needs without direct
-	 * transition is currently not allowed
-	 */
-	if (fb_sec_dir && secure == SDE_DRM_SEC_NON_SEC &&
-		smmu_state->state != ATTACHED &&
-		smmu_state->secure_level == SDE_DRM_SEC_ONLY) {
-
-		SDE_EVT32(DRMID(crtc), fb_ns, fb_sec_dir,
-			smmu_state->state, smmu_state->secure_level,
-			secure);
+	if (_sde_crtc_check_secure_transition(crtc, state, is_video_mode))
 		goto sec_err;
-	}
 
 	/*
 	 * In video mode check for null commit before transition
@@ -4439,6 +4485,33 @@ static int _sde_crtc_check_secure_conn(struct drm_crtc *crtc,
 	return 0;
 }
 
+static int _sde_crtc_populate_secure_session(struct drm_crtc_state *state,
+	int secure, int fb_ns, int fb_sec, int fb_sec_dir)
+{
+	struct sde_crtc_state *cstate = to_sde_crtc_state(state);
+
+	if (secure == SDE_DRM_SEC_ONLY && fb_sec_dir && !fb_sec && !fb_ns)
+		cstate->secure_session = SDE_SECURE_UI_SESSION;
+	else if (secure == SDE_DRM_SEC_NON_SEC && fb_sec_dir && !fb_sec)
+		cstate->secure_session = SDE_SECURE_CAMERA_SESSION;
+	else if (secure == SDE_DRM_SEC_NON_SEC && !fb_sec_dir && fb_sec)
+		cstate->secure_session = SDE_SECURE_VIDEO_SESSION;
+	else if (secure == SDE_DRM_SEC_NON_SEC && !fb_sec_dir &&
+			!fb_sec && fb_ns)
+		cstate->secure_session = SDE_NON_SECURE_SESSION;
+	else if (!fb_sec_dir && !fb_sec && !fb_ns)
+		cstate->secure_session = SDE_NULL_SESSION;
+	else {
+		SDE_ERROR(
+			"invalid session sec:%d fb_sec_dir:%d fb_sec:%d fb_ns:%d\n",
+				cstate->secure_session, fb_sec_dir,
+				fb_sec, fb_ns);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 static int _sde_crtc_check_secure_state(struct drm_crtc *crtc,
 		struct drm_crtc_state *state, struct plane_state pstates[],
 		int cnt)
@@ -4469,6 +4542,11 @@ static int _sde_crtc_check_secure_state(struct drm_crtc *crtc,
 	if (rc)
 		return rc;
 
+	rc = _sde_crtc_populate_secure_session(state, secure,
+				fb_ns, fb_sec, fb_sec_dir);
+	if (rc)
+		return rc;
+
 	rc = _sde_crtc_check_secure_blend_config(crtc, state, pstates, cstate,
 			sde_kms, cnt, secure, fb_ns, fb_sec, fb_sec_dir);
 	if (rc)
diff --git a/msm/sde/sde_crtc.h b/msm/sde/sde_crtc.h
index 8ac8b9b0..cb93c90f 100644
--- a/msm/sde/sde_crtc.h
+++ b/msm/sde/sde_crtc.h
@@ -36,6 +36,22 @@
 #define SDE_CRTC_FRAME_EVENT_SIZE	(4 * 2)
 
 /**
+ * enum sde_session_type: session type
+ * @SDE_SECURE_UI_SESSION:     secure UI usecase
+ * @SDE_SECURE_CAMERA_SESSION: secure camera usecase
+ * @SDE_SECURE_VIDEO_SESSION:  secure video usecase
+ * @SDE_NON_SECURE_SESSION:    non secure usecase
+ * @SDE_NULL_SESSION:          null commit usecase
+ */
+enum sde_session_type {
+	SDE_SECURE_UI_SESSION,
+	SDE_SECURE_CAMERA_SESSION,
+	SDE_SECURE_VIDEO_SESSION,
+	SDE_NON_SECURE_SESSION,
+	SDE_NULL_SESSION,
+};
+
+/**
  * enum sde_crtc_client_type: crtc client type
  * @RT_CLIENT:	RealTime client like video/cmd mode display
  *              voting through apps rsc
@@ -384,6 +400,7 @@ struct sde_crtc {
  * @ds_cfg: Destination scaler config
  * @scl3_lut_cfg: QSEED3 lut config
  * @new_perf: new performance state being requested
+ * @secure_session: Indicates the type of secure session
  */
 struct sde_crtc_state {
 	struct drm_crtc_state base;
@@ -413,6 +430,7 @@ struct sde_crtc_state {
 	struct sde_hw_scaler3_lut_cfg scl3_lut_cfg;
 
 	struct sde_core_perf_params new_perf;
+	int secure_session;
 };
 
 enum sde_crtc_irq_state {