From: Lucas Stach <l.stach@pengutronix.de>
Date: Mon, 22 Jan 2018 11:35:14 +0000 (+0100)
Subject: drm/etnaviv: add security handling mode enum
X-Git-Tag: v4.19~1144^2~15^2~5
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=007ad58dd3cd77d97b293020989298b09320fe53;p=platform%2Fkernel%2Flinux-rpi3.git

drm/etnaviv: add security handling mode enum

With the introduction of GPU security we have 3 different modes of
GPU operation:
- GPU core doesn't have security features -> no handling required
- the security related states are handled by the kernel driver
- the security related states are handled by a TrustZone application

Add a enum to differentiate between the different operation modes.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
index 1620015..3c30055 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
@@ -84,6 +84,12 @@ struct etnaviv_chip_identity {
 	u8 varyings_count;
 };
 
+enum etnaviv_sec_mode {
+	ETNA_SEC_NONE = 0,
+	ETNA_SEC_KERNEL,
+	ETNA_SEC_TZ
+};
+
 struct etnaviv_event {
 	struct dma_fence *fence;
 	struct etnaviv_gem_submit *submit;
@@ -102,6 +108,7 @@ struct etnaviv_gpu {
 	struct device *dev;
 	struct mutex lock;
 	struct etnaviv_chip_identity identity;
+	enum etnaviv_sec_mode sec_mode;
 	struct etnaviv_file_private *lastctx;
 	struct workqueue_struct *wq;
 	struct drm_gpu_scheduler sched;