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4243cd5388
linux/drivers/gpu/drm/i915
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Chris Wilson 4243cd5388 drm/i915/gt: Sanitize GT first 
We see that if the HW doesn't actually sleep, the HW may eat the poison
we set in its write-only HWSP during sanitize:

  intel_gt_resume.part.8: 0000:00:02.0
  __gt_unpark: 0000:00:02.0
  gt_sanitize: 0000:00:02.0 force:yes
  process_csb: 0000:00:02.0 vcs0: cs-irq head=5, tail=90
  process_csb: 0000:00:02.0 vcs0: csb[0]: status=0x5a5a5a5a:0x5a5a5a5a
  assert_pending_valid: Nothing pending for promotion!

The CS TAIL pointer should have been reset by reset_csb_pointers(), so
in this case it is likely that we have read back from the CPU cache and
so we must clflush our control over that page. In doing so, push the
sanitisation to the start of the GT sequence so that our poisoning is
assuredly before we start talking to the HW.

References: https://gitlab.freedesktop.org/drm/intel/-/issues/1794
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200427084000.10999-1-chris@chris-wilson.co.uk
2020-04-27 11:39:23 +01:00
..
display drm/i915: Split some long lines 2020-04-24 17:59:59 +03:00
gem drm/i915: Only close vma we open 2020-04-24 11:24:45 +01:00
gt drm/i915/gt: Sanitize GT first 2020-04-27 11:39:23 +01:00
gvt drm/i915: Only close vma we open 2020-04-24 11:24:45 +01:00
selftests drm/i915: Only close vma we open 2020-04-24 11:24:45 +01:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
i915_active_types.h
i915_active.c drm/i915: Allow asynchronous waits on the i915_active barriers 2020-04-06 19:48:06 +01:00
i915_active.h drm/i915: Allow asynchronous waits on the i915_active barriers 2020-04-06 19:48:06 +01:00
i915_buddy.c drm/i915/buddy: avoid double list_add 2020-03-06 14:33:08 +00:00
i915_buddy.h
i915_cmd_parser.c
i915_debugfs_params.c
i915_debugfs_params.h
i915_debugfs.c drm/i915/gt: Use the RPM config register to determine clk frequencies 2020-04-24 19:10:17 +01:00
i915_debugfs.h drm/i915: split out display debugfs to a separate file 2020-02-14 13:26:51 +02:00
i915_drv.c drm/i915: Refactor setting dma info to a common helper 2020-04-18 07:49:11 +01:00
i915_drv.h drm/i915: Update DRIVER_DATE to 20200417 2020-04-17 09:35:00 +03:00
i915_fixed.h
i915_gem_evict.c drm/i915/evict: watch out for unevictable nodes 2020-04-08 21:39:48 +01:00
i915_gem_gtt.c drm/i915: significantly reduce the use of <drm/i915_drm.h> 2020-02-27 08:35:09 +02:00
i915_gem_gtt.h
i915_gem.c drm/i915/gem: Drop cached obj->bind_count 2020-04-02 01:17:39 +01:00
i915_gem.h
i915_getparam.c
i915_globals.c
i915_globals.h
i915_gpu_error.c drm/i915: Drop rq->ring->vma peeking from error capture 2020-04-24 22:14:35 +01:00
i915_gpu_error.h drm/i915: Drop rq->ring->vma peeking from error capture 2020-04-24 22:14:35 +01:00
i915_ioc32.c drm/i915: add i915_ioc32.h for compat 2020-03-02 13:32:37 +02:00
i915_ioc32.h drm/i915: add i915_ioc32.h for compat 2020-03-02 13:32:37 +02:00
i915_irq.c Merge drm/drm-next into drm-intel-next-queued 2020-04-16 14:35:16 +03:00
i915_irq.h drm/i915: Convert to CRTC VBLANK callbacks 2020-02-13 13:08:13 +01:00
i915_memcpy.c drm/i915: remove always-defined CONFIG_AS_MOVNTDQA 2020-04-09 00:01:59 +09:00
i915_memcpy.h
i915_mm.c
i915_params.c
i915_params.h drm/i915: Mark i915.reset as unsigned 2020-02-05 18:51:52 +00:00
i915_pci.c drm/i915: Refactor setting dma info to a common helper 2020-04-18 07:49:11 +01:00
i915_perf_types.h drm/i915/perf: Schedule oa_config after modifying the contexts 2020-03-30 18:20:34 +01:00
i915_perf.c drm/i915: Make define for lrc state offset 2020-04-24 00:52:14 +01:00
i915_perf.h
i915_pmu.c drm/i915/pmu: prefer struct drm_device based logging 2020-04-08 13:49:35 +03:00
i915_pmu.h drm/i915: significantly reduce the use of <drm/i915_drm.h> 2020-02-27 08:35:09 +02:00
i915_priolist_types.h
i915_pvinfo.h
i915_query.c
i915_query.h
i915_reg.h drm/i915: Use indirect ctx bb to mend CMD_BUF_CCTL 2020-04-25 19:08:56 +01:00
i915_request.c drm/i915: Keep a per-engine request pool 2020-04-03 15:20:03 +01:00
i915_request.h drm/i915: Keep a per-engine request pool 2020-04-03 15:20:03 +01:00
i915_scatterlist.c
i915_scatterlist.h
i915_scheduler_types.h
i915_scheduler.c drm/i915/gt: Include a few tracek for timeslicing 2020-03-31 21:42:12 +01:00
i915_scheduler.h
i915_selftest.h
i915_suspend.c drm/i915: significantly reduce the use of <drm/i915_drm.h> 2020-02-27 08:35:09 +02:00
i915_suspend.h
i915_sw_fence_work.c drm/i915: Immediately execute the fenced work 2020-03-25 13:05:04 +00:00
i915_sw_fence_work.h drm/i915: Immediately execute the fenced work 2020-03-25 13:05:04 +00:00
i915_sw_fence.c drm/i915: Prefer '%ps' for printing function symbol names 2020-03-19 16:18:14 +00:00
i915_sw_fence.h drm/i915/gem: Don't leak non-persistent requests on changing engines 2020-02-11 21:58:39 +00:00
i915_switcheroo.c drm/i915/switcheroo: use struct drm_device based logging 2020-04-08 13:49:35 +03:00
i915_switcheroo.h
i915_syncmap.c
i915_syncmap.h
i915_sysfs.c drm/i915/gt: Expose engine properties via sysfs 2020-02-28 22:03:19 +00:00
i915_sysfs.h
i915_trace_points.c
i915_trace.h
i915_user_extensions.c
i915_user_extensions.h
i915_utils.c drm/i915: Avoid setting timer->expires to 0 2020-04-03 16:33:09 +01:00
i915_utils.h drm/i915: be more solid in checking the alignment 2020-03-11 23:12:39 +02:00
i915_vgpu.c drm/i915/vgpu: improve vgpu abstractions 2020-03-03 17:46:54 +02:00
i915_vgpu.h drm/i915/vgpu: improve vgpu abstractions 2020-03-03 17:46:54 +02:00
i915_vma_types.h drm/i915/gem: Extract transient execbuf flags from i915_vma 2020-03-03 21:52:51 +00:00
i915_vma.c drm/i915: Only close vma we open 2020-04-24 11:24:45 +01:00
i915_vma.h drm/i915/gt: Make fence revocation unequivocal 2020-04-01 23:34:17 +01:00
intel_device_info.c drm/i915: Refactor setting dma info to a common helper 2020-04-18 07:49:11 +01:00
intel_device_info.h drm/i915: Refactor setting dma info to a common helper 2020-04-18 07:49:11 +01:00
intel_dram.c drm/i915/dram: prefer struct drm_device based logging 2020-04-08 13:49:35 +03:00
intel_dram.h drm/i915: split out intel_dram.[ch] from i915_drv.c 2020-02-27 09:16:01 +02:00
intel_gvt.c drm/i915/gvt: make intel_gvt_active internal to intel_gvt 2020-03-03 17:47:03 +02:00
intel_gvt.h
intel_memory_region.c
intel_memory_region.h
intel_pch.c
intel_pch.h
intel_pm.c drm/i915: drop a bunch of superfluous inlines 2020-04-21 09:31:37 +03:00
intel_pm.h drm/i915: Add pre/post plane updates for SAGV 2020-04-17 20:41:00 +03:00
intel_region_lmem.c
intel_region_lmem.h
intel_runtime_pm.c
intel_runtime_pm.h
intel_sideband.c drm/i915: drop a bunch of superfluous inlines 2020-04-21 09:31:37 +03:00
intel_sideband.h
intel_uncore.c drm/i915/icl: Update forcewake firmware ranges 2020-04-17 19:35:43 +01:00
intel_uncore.h drm/i915/selftests: Measure the energy consumed while in RC6 2020-03-25 11:33:05 +00:00
intel_wakeref.c drm/i915: Extend intel_wakeref to support delayed puts 2020-03-23 12:51:05 +00:00
intel_wakeref.h drm/i915: Extend intel_wakeref to support delayed puts 2020-03-23 12:51:05 +00:00
intel_wopcm.c drm/i915: drop a bunch of superfluous inlines 2020-04-21 09:31:37 +03:00
intel_wopcm.h
Kconfig drm/i915: Update drm/i915 bug filing URL 2020-02-17 21:16:45 +02:00
Kconfig.debug
Kconfig.profile drm/i915/gen12: Disable preemption timeout 2020-03-12 13:46:01 +00:00
Kconfig.unstable
Makefile drm/i915: re-disable -Wframe-address 2020-04-27 09:58:27 +01:00
vlv_suspend.c drm/i915: switch vlv_suspend to use intel uncore register accessors 2020-02-17 11:29:51 +02:00
vlv_suspend.h drm/i915: split out vlv/chv specific suspend/resume code 2020-02-17 11:29:35 +02:00