Since both GPU reset and declaring the device wedged suspend ongoing
driver activity around a hard reset, we can reuse the same code to
reduce the likelihood of forgetting details surrounding reset from
either path.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Cc: Sujaritha Sundaresan <sujaritha.sundaresan@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reset.c | 20 +++++++++++---------
1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reset.c b/drivers/gpu/drm/i915/i915_reset.c
index 3737cb73b8f4..861fe083e383 100644
--- a/drivers/gpu/drm/i915/i915_reset.c
+++ b/drivers/gpu/drm/i915/i915_reset.c
@@ -681,6 +681,10 @@ static void reset_prepare(struct drm_i915_private *i915)
reset_prepare_engine(engine);
intel_uc_reset_prepare(i915);
+}
+
+static void gt_revoke(struct drm_i915_private *i915)
+{
revoke_mmaps(i915);
}
@@ -756,8 +760,10 @@ static void reset_finish(struct drm_i915_private *i915)
struct intel_engine_cs *engine;
enum intel_engine_id id;
- for_each_engine(engine, i915, id)
+ for_each_engine(engine, i915, id) {
reset_finish_engine(engine);
+ intel_engine_signal_breadcrumbs(engine);
+ }
}
static void reset_restart(struct drm_i915_private *i915)
@@ -823,10 +829,7 @@ static void __i915_gem_set_wedged(struct drm_i915_private *i915)
* rolling the global seqno forward (since this would complete requests
* for which we haven't set the fence error to EIO yet).
*/
- for_each_engine(engine, i915, id)
- reset_prepare_engine(engine);
-
- intel_uc_reset_prepare(i915);
+ reset_prepare(i915);
/* Even if the GPU reset fails, it should still stop the engines */
if (!INTEL_INFO(i915)->gpu_reset_clobbers_display)
@@ -849,10 +852,7 @@ static void __i915_gem_set_wedged(struct drm_i915_private *i915)
for_each_engine(engine, i915, id)
engine->cancel_requests(engine);
- for_each_engine(engine, i915, id) {
- reset_finish_engine(engine);
- intel_engine_signal_breadcrumbs(engine);
- }
+ reset_finish(i915);
smp_mb__before_atomic();
set_bit(I915_WEDGED, &error->flags);
@@ -949,6 +949,8 @@ static int do_reset(struct drm_i915_private *i915, unsigned int stalled_mask)
{
int err, i;
+ gt_revoke(i915);
+
err = intel_gpu_reset(i915, ALL_ENGINES);
for (i = 0; err && i < RESET_MAX_RETRIES; i++) {
msleep(10 * (i + 1));
--
2.20.1
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