[Intel-gfx] [PATCH 14/14] drm/i915/tdr: Enable Engine reset and recovery support

[Arun Siluvery]

Everything in place, flip the switch.

This feature is available only from Gen8, for previous gen devices driver
falls back to legacy full gpu reset.

Signed-off-by: Tomas Elf <tomas.elf at intel.com>
Signed-off-by: Arun Siluvery <arun.siluvery at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h    | 4 ++++
 drivers/gpu/drm/i915/i915_params.c | 4 ++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index b4558483..6865ffb 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2617,6 +2617,10 @@ struct drm_i915_cmd_table {
 #define VEBOX_RING		(1<<VECS)
 #define BSD2_RING		(1<<VCS2)
 #define ALL_ENGINES		(~0)
+#define I915_ENGINE_RESET_MASK	((1 << I915_EXEC_RENDER) | \
+				 (1 << I915_EXEC_BSD) | \
+				 (1 << I915_EXEC_BLT) | \
+				 (1 << I915_EXEC_VEBOX))
 
 #define HAS_BSD(dev)		(INTEL_INFO(dev)->ring_mask & BSD_RING)
 #define HAS_BSD2(dev)		(INTEL_INFO(dev)->ring_mask & BSD2_RING)
diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
index e4f9d6a..a322fd6 100644
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -45,7 +45,7 @@ struct i915_params i915 __read_mostly = {
 	.fastboot = 0,
 	.prefault_disable = 0,
 	.load_detect_test = 0,
-	.reset = 1,
+	.reset = I915_ENGINE_RESET_MASK,
 	.invert_brightness = 0,
 	.disable_display = 0,
 	.enable_cmd_parser = 1,
@@ -109,7 +109,7 @@ MODULE_PARM_DESC(vbt_sdvo_panel_type,
 	"(-2=ignore, -1=auto [default], index in VBT BIOS table)");
 
 module_param_named_unsafe(reset, i915.reset, int, 0600);
-MODULE_PARM_DESC(reset, "Attempt GPU resets (0=disabled, 1=full gpu reset [default], 2=engine reset)");
+MODULE_PARM_DESC(reset, "Attempt GPU resets (0=disabled, 1=full gpu reset, 2=engine reset [default])");
 
 module_param_named_unsafe(enable_hangcheck, i915.enable_hangcheck, bool, 0644);
 MODULE_PARM_DESC(enable_hangcheck,
-- 
1.9.1