diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2018-08-14 18:18:57 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2018-08-15 10:15:28 +0100 |
| commit | a99b32a6fff7e482a267c72e565c8c410ce793d7 (patch) | |
| tree | 92bd3fdd4d402c9264c09da8b966e911b4ef0117 /drivers/gpu | |
| parent | 08ea70a417baa1c0e5faa580070cd2ffd04e6285 (diff) | |
drm/i915: Clear stop-engine for a pardoned reset
If we pardon a per-engine reset, we may leave the STOP_RING bit asserted
in RING_MI_MODE resulting in the engine hanging. Unconditionally clear
it on the per-engine exit path as we know that either we skipped the
reset and so need the cancellation, or the reset was successful and the
cancellation is a no-op, or there was an error and we will follow up
with a full-reset or wedging (both of which will stop the engines again
as required).
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107188
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106560
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180814171857.24673-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_engine_cs.c | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.h | 1 |
3 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 9dce55182c3a..41111f2a9c39 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -2079,6 +2079,7 @@ int i915_reset_engine(struct intel_engine_cs *engine, const char *msg) goto out; out: + intel_engine_cancel_stop_cs(engine); i915_gem_reset_finish_engine(engine); return ret; } diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c index 99d5a24219c1..8628567d8f6e 100644 --- a/drivers/gpu/drm/i915/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/intel_engine_cs.c @@ -788,6 +788,16 @@ int intel_engine_stop_cs(struct intel_engine_cs *engine) return err; } +void intel_engine_cancel_stop_cs(struct intel_engine_cs *engine) +{ + struct drm_i915_private *dev_priv = engine->i915; + + GEM_TRACE("%s\n", engine->name); + + I915_WRITE_FW(RING_MI_MODE(engine->mmio_base), + _MASKED_BIT_DISABLE(STOP_RING)); +} + const char *i915_cache_level_str(struct drm_i915_private *i915, int type) { switch (type) { diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index 9090885d57de..3f6920dd7880 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -906,6 +906,7 @@ int intel_init_blt_ring_buffer(struct intel_engine_cs *engine); int intel_init_vebox_ring_buffer(struct intel_engine_cs *engine); int intel_engine_stop_cs(struct intel_engine_cs *engine); +void intel_engine_cancel_stop_cs(struct intel_engine_cs *engine); u64 intel_engine_get_active_head(const struct intel_engine_cs *engine); u64 intel_engine_get_last_batch_head(const struct intel_engine_cs *engine); |