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0d333ac7eb
linux_dsm_epyc7002/drivers/gpu/drm/i915/gt
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Daniele Ceraolo Spurio 0d333ac7eb drm/i915: fix SFC reset flow 
Our assumption that the we can ask the HW to lock the SFC even if not
currently in use does not match the HW commitment. The expectation from
the HW is that SW will not try to lock the SFC if the engine is not
using it and if we do that the behavior is undefined; on ICL the HW
ends up to returning the ack and ignoring our lock request, but this is
not guaranteed and we shouldn't expect it going forward.

Also, failing to get the ack while the SFC is in use means that we can't
cleanly reset it, so fail the engine reset in that scenario.

v2: drop rmw change, keep the log as debug and handle failure (Chris),
    improve comments (Tvrtko).

Reported-by: Owen Zhang <owen.zhang@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190919015330.15435-1-daniele.ceraolospurio@intel.com
2019-09-19 11:04:55 +01:00
..
selftests drm/i915: Markup expected timeline locks for i915_active 2019-08-16 18:02:07 +01:00
uc drm/i915/uc: Extract common code from GuC stop/disable comm 2019-08-29 19:46:40 +01:00
gen6_renderstate.c drm/i915: Move the renderstate setup under gt/ 2019-07-04 11:48:22 +01:00
gen7_renderstate.c drm/i915: Move the renderstate setup under gt/ 2019-07-04 11:48:22 +01:00
gen8_renderstate.c drm/i915: Move the renderstate setup under gt/ 2019-07-04 11:48:22 +01:00
gen9_renderstate.c drm/i915: Move the renderstate setup under gt/ 2019-07-04 11:48:22 +01:00
intel_breadcrumbs.c Merge drm/drm-next into drm-intel-next-queued 2019-08-22 00:10:36 -07:00
intel_context_types.h drm/i915/execlists: Lift process_csb() out of the irq-off spinlock 2019-08-16 20:59:02 +01:00
intel_context.c drm/i915: Make shrink/unshrink be atomic 2019-09-11 08:14:23 +01:00
intel_context.h drm/i915/gt: Mark context->active_count as protected by timeline->mutex 2019-08-16 18:02:06 +01:00
intel_engine_cs.c drm/i915: Show the logical context ring state on dumping 2019-09-16 22:09:08 +01:00
intel_engine_pm.c drm/i915: Hold irq-off for the entire fake lock period 2019-08-23 19:44:21 +01:00
intel_engine_pm.h drm/i915: Defer final intel_wakeref_put to process context 2019-08-08 21:28:51 +01:00
intel_engine_pool_types.h drm/i915: Replace struct_mutex for batch pool serialisation 2019-08-04 14:31:18 +01:00
intel_engine_pool.c drm/i915: Make engine's batch pool safe for use with virtual engines 2019-08-27 16:42:12 +01:00
intel_engine_pool.h drm/i915: Make engine's batch pool safe for use with virtual engines 2019-08-27 16:42:12 +01:00
intel_engine_types.h drm/i915: Use engine relative LRIs on context setup 2019-09-06 18:12:25 +01:00
intel_engine_user.c drm/i915: Fix up the inverse mapping for default ctx->engines[] 2019-08-08 15:45:35 +01:00
intel_engine_user.h drm/i915: Rename engines to match their user interface 2019-08-07 14:30:55 +01:00
intel_engine.h drm/i915/guc: Use a local cancel_port_requests 2019-08-13 07:54:39 +01:00
intel_gpu_commands.h drm/i915/tgl: Extend MI_SEMAPHORE_WAIT 2019-09-17 15:33:21 +01:00
intel_gt_irq.c drm/i915: Extract general GT interrupt handlers 2019-08-12 15:36:13 +01:00
intel_gt_irq.h drm/i915: Extract general GT interrupt handlers 2019-08-12 15:36:13 +01:00
intel_gt_pm_irq.c drm/i915: Extract general GT interrupt handlers 2019-08-12 15:36:13 +01:00
intel_gt_pm_irq.h drm/i915: Extract GT powermanagement interrupt handling 2019-08-12 15:36:06 +01:00
intel_gt_pm.c drm/i915: Make pm_notify take intel_gt 2019-09-11 08:11:55 +01:00
intel_gt_pm.h drm/i915: Hook up GT power management 2019-09-06 20:29:58 +01:00
intel_gt_types.h drm/i915/pmu: Use GT parked for estimating RC6 while asleep 2019-09-12 17:02:50 +01:00
intel_gt.c drm/i915: Move GT init to intel_gt.c 2019-09-11 08:11:51 +01:00
intel_gt.h drm/i915: Move GT init to intel_gt.c 2019-09-11 08:11:51 +01:00
intel_hangcheck.c drm/i915: Refactor instdone loops on new subslice functions 2019-08-23 19:14:25 +01:00
intel_lrc_reg.h drm/i915/execlists: Clear STOP_RING bit on reset 2019-09-10 11:04:17 +01:00
intel_lrc.c drm/i915/tgl: Extend MI_SEMAPHORE_WAIT 2019-09-17 15:33:21 +01:00
intel_lrc.h drm/i915: Make engine's batch pool safe for use with virtual engines 2019-08-27 16:42:12 +01:00
intel_mocs.c drm/i915/gt: Remove stale kerneldoc for internal MOCS functions 2019-08-05 18:27:17 +01:00
intel_mocs.h drm/i915: Move MOCS setup to intel_mocs.c 2019-07-31 07:40:35 -07:00
intel_renderstate.c drm/i915: Serialize against vma moves 2019-08-19 15:25:56 +01:00
intel_renderstate.h drm/i915: Move the renderstate setup under gt/ 2019-07-04 11:48:22 +01:00
intel_reset_types.h drm/i915/gt: Use intel_gt as the primary object for handling resets 2019-07-12 21:06:56 +01:00
intel_reset.c drm/i915: fix SFC reset flow 2019-09-19 11:04:55 +01:00
intel_reset.h drm/i915: Don't mix srcu tag and negative error codes 2019-09-13 15:07:34 +01:00
intel_ringbuffer.c drm/i915: Extend Haswell GT1 PSMI workaround to all 2019-09-18 12:01:53 +01:00
intel_sseu.c drm/i915: Expand subslice mask 2019-08-23 19:14:27 +01:00
intel_sseu.h drm/i915: Expand subslice mask 2019-08-23 19:14:27 +01:00
intel_timeline_types.h drm/i915/gt: Guard timeline pinning without relying on struct_mutex 2019-08-15 23:21:13 +01:00
intel_timeline.c drm/i915: Hold irq-off for the entire fake lock period 2019-08-23 19:44:21 +01:00
intel_timeline.h drm/i915/gt: Track timeline activeness in enter/exit 2019-08-15 23:16:05 +01:00
intel_workarounds_types.h drm/i915: Add engine name to workaround debug print 2019-07-12 09:55:30 +01:00
intel_workarounds.c drm/i915: Whitelist COMMON_SLICE_CHICKEN2 2019-09-11 08:59:48 +01:00
intel_workarounds.h drm/i915: Convert gt workarounds to intel_gt 2019-06-21 13:48:25 +01:00
Makefile drm/i915: use upstream version of header tests 2019-07-30 12:11:57 +03:00
mock_engine.c drm/i915: Protect request retirement with timeline->mutex 2019-08-15 23:21:13 +01:00
mock_engine.h
selftest_context.c drm/i915/selftests: Check the context size 2019-08-17 09:27:58 +01:00
selftest_engine_cs.c drm/i915: Rename engines to match their user interface 2019-08-07 14:30:55 +01:00
selftest_engine_pm.c drm/i915: Defer final intel_wakeref_put to process context 2019-08-08 21:28:51 +01:00
selftest_engine.c drm/i915: Defer final intel_wakeref_put to process context 2019-08-08 21:28:51 +01:00
selftest_engine.h drm/i915: Defer final intel_wakeref_put to process context 2019-08-08 21:28:51 +01:00
selftest_hangcheck.c drm/i915: Track ggtt fence reservations under its own mutex 2019-08-22 08:53:40 +01:00
selftest_lrc.c drm/i915/selftests: Keep the engine awake while we keep for preemption 2019-09-12 21:02:54 +01:00
selftest_reset.c drm/i915/gt: Use intel_gt as the primary object for handling resets 2019-07-12 21:06:56 +01:00
selftest_timeline.c drm/i915: Markup expected timeline locks for i915_active 2019-08-16 18:02:07 +01:00
selftest_workarounds.c drm/i915/selftests: Add the usual batch vma managements to st_workarounds 2019-08-27 10:21:51 +01:00