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78ad455fd2
linux_dsm_epyc7002/drivers/gpu/drm/i915
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Daniel Vetter 78ad455fd2 drm/i915: Improve irq handling after gpu resets 
Currently we do a full re-init of all interrupts after a gpu hang.
Which is pretty bad since we don't restore the interrupts we've
enabled at runtime correctly. Even with that addressed it's rather
horribly race.

But on g4x and later we only reset the gt and not the entire gpu.
Which means we only need to reset the GT interrupt bits. Which has the
nice benefit that vblank waits, pipe CRC interrupts and everything
else display related just keeps on working.

The downside is that gt interrupt handling (i.e. ring->get/put_irq) is
still racy. But as long as the gpu hang reliably wakes all waters and
we have a short time where the refcount drops to 0 we'll recover. So
not that bad really.

v2: Ville noticed that GTIMR and PMIMR don't get cleared, only the
subordinate per-ring registers. So let's rip out all the interrupt dancing.
The FIXME comment is still required though since the ring irq handling
happens at the per-ring interrupt mask registers, too.

Testcase: igt/kms_flip/vblank-vs-hang
Testcase: igt/kms_pipe_crc_basic/hang-*
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-06-05 08:52:30 +02:00
..
dvo_ch7xxx.c drm/i915: Remove spurious semicolons 2014-04-09 21:54:33 +02:00
dvo_ch7017.c
dvo_ivch.c drm/i915: Remove spurious semicolons 2014-04-09 21:54:33 +02:00
dvo_ns2501.c drm/i915: Remove spurious semicolons 2014-04-09 21:54:33 +02:00
dvo_sil164.c drm/i915: Remove spurious semicolons 2014-04-09 21:54:33 +02:00
dvo_tfp410.c drm/i915: Remove spurious semicolons 2014-04-09 21:54:33 +02:00
dvo.h
i915_cmd_parser.c drm/i915: s/intel_ring_buffer/intel_engine_cs 2014-05-22 23:01:05 +02:00
i915_debugfs.c drm/i915: Add fifo underrun reporting state to debugfs 2014-06-05 08:52:28 +02:00
i915_dma.c drm/i915: Split the ringbuffers from the rings (3/3) 2014-05-22 23:30:18 +02:00
i915_drv.c drm/i915: Improve irq handling after gpu resets 2014-06-05 08:52:30 +02:00
i915_drv.h drm/i915: Kill private_default_ctx off 2014-05-22 23:44:44 +02:00
i915_gem_context.c drm/i915: Kill private_default_ctx off 2014-05-22 23:44:44 +02:00
i915_gem_debug.c drm/i915: prefer struct drm_i915_private to drm_i915_private_t 2014-03-31 15:34:21 +02:00
i915_gem_dmabuf.c drm/i915: Introduce mapping of user pages into video memory (userptr) ioctl 2014-05-16 19:31:29 +02:00
i915_gem_evict.c drm/i915: prefer struct drm_i915_private to drm_i915_private_t 2014-03-31 15:34:21 +02:00
i915_gem_execbuffer.c drm/i915: s/i915_hw_context/intel_context 2014-05-22 23:41:17 +02:00
i915_gem_gtt.c drm/i915: s/intel_ring_buffer/intel_engine_cs 2014-05-22 23:01:05 +02:00
i915_gem_gtt.h drm/i915: s/i915_hw_context/intel_context 2014-05-22 23:41:17 +02:00
i915_gem_render_state.c drm/i915: s/intel_ring_buffer/intel_engine_cs 2014-05-22 23:01:05 +02:00
i915_gem_stolen.c drm/i915: restrict vt-d stolen memory workaround to pre-gen8 2014-03-31 10:45:34 +02:00
i915_gem_tiling.c drm/i915: prefer struct drm_i915_private to drm_i915_private_t 2014-03-31 15:34:21 +02:00
i915_gem_userptr.c drm/i915: Introduce mapping of user pages into video memory (userptr) ioctl 2014-05-16 19:31:29 +02:00
i915_gem.c drm/i915: s/i915_hw_context/intel_context 2014-05-22 23:41:17 +02:00
i915_gpu_error.c drm/i915: Split the ringbuffers from the rings (2/3) 2014-05-22 23:27:25 +02:00
i915_ioc32.c
i915_irq.c drm/i915: Inline ilk/gen8_irq_reset 2014-06-05 08:52:30 +02:00
i915_params.c drm/i915: Add debug module option for VTd validation 2014-04-03 11:23:11 +02:00
i915_reg.h drm/i915: Implement WaVcpClkGateDisableForMediaReset:ctg, elk 2014-05-22 16:34:57 +02:00
i915_suspend.c drm/i915: disable GT power saving early during system suspend 2014-05-22 21:53:27 +02:00
i915_sysfs.c drm/i915: s/i915_hw_context/intel_context 2014-05-22 23:41:17 +02:00
i915_trace_points.c
i915_trace.h drm/i915: s/intel_ring_buffer/intel_engine_cs 2014-05-22 23:01:05 +02:00
i915_ums.c drm/i915: Only restore backlight combination mode reg for ums 2014-01-24 17:22:45 +01:00
intel_acpi.c Merge branch 'acpi-dsm' 2014-01-12 23:45:52 +01:00
intel_bios.c drm/i915: Validate VBT header before trusting it 2014-05-05 09:08:59 +02:00
intel_bios.h Merge tag 'drm-intel-next-2014-04-16' of git://anongit.freedesktop.org/drm-intel into drm-next 2014-05-01 09:11:37 +10:00
intel_crt.c drm: convert crtc and connection_mutex to ww_mutex (v5) 2014-06-05 09:54:33 +10:00
intel_ddi.c drm/i915: grab the audio power domain when enabling audio on HSW+ 2014-05-22 15:06:33 +02:00
intel_display.c drm: convert crtc and connection_mutex to ww_mutex (v5) 2014-06-05 09:54:33 +10:00
intel_dp.c drm: convert crtc and connection_mutex to ww_mutex (v5) 2014-06-05 09:54:33 +10:00
intel_drv.h drm: convert crtc and connection_mutex to ww_mutex (v5) 2014-06-05 09:54:33 +10:00
intel_dsi_cmd.c drm/i915: Send DPI command explicitely in LP mode 2014-04-09 21:54:30 +02:00
intel_dsi_cmd.h drm/i915: Send DPI command explicitely in LP mode 2014-04-09 21:54:30 +02:00
intel_dsi_pll.c drm/i915: Try harder to get best m, n, p values with minimal error 2013-12-11 23:52:18 +01:00
intel_dsi.c drm/i915: Add MIPI mmio reg base 2014-05-19 17:56:40 +02:00
intel_dsi.h drm/i915: MIPI PPS delays added 2014-05-15 22:44:21 +02:00
intel_dvo.c drm/i915: replace drm_get_connector_name() with direct name field use 2014-06-04 13:14:37 +10:00
intel_fbdev.c drm: add drm_fb_helper_restore_fbdev_mode_unlocked() 2014-06-05 10:02:40 +10:00
intel_hdmi.c drm/i915: replace drm_get_connector_name() with direct name field use 2014-06-04 13:14:37 +10:00
intel_i2c.c drm/i915: Disable dp aux irq on g4x 2014-02-07 16:40:07 +01:00
intel_lvds.c drm/i915: replace drm_get_connector_name() with direct name field use 2014-06-04 13:14:37 +10:00
intel_modes.c
intel_opregion.c drm: convert crtc and connection_mutex to ww_mutex (v5) 2014-06-05 09:54:33 +10:00
intel_overlay.c drm: convert crtc and connection_mutex to ww_mutex (v5) 2014-06-05 09:54:33 +10:00
intel_panel.c drm: convert crtc and connection_mutex to ww_mutex (v5) 2014-06-05 09:54:33 +10:00
intel_pm.c drm/i915: s/intel_ring_buffer/intel_engine_cs 2014-05-22 23:01:05 +02:00
intel_renderstate_gen6.c drm/i915: add null render states for gen6, gen7 and gen8 2014-05-14 19:17:08 +02:00
intel_renderstate_gen7.c drm/i915: add null render states for gen6, gen7 and gen8 2014-05-14 19:17:08 +02:00
intel_renderstate_gen8.c drm/i915: add null render states for gen6, gen7 and gen8 2014-05-14 19:17:08 +02:00
intel_renderstate.h drm/i915: add render state initialization 2014-05-14 19:16:13 +02:00
intel_ringbuffer.c drm/i915: Split the ringbuffers from the rings (3/3) 2014-05-22 23:30:18 +02:00
intel_ringbuffer.h drm/i915: s/i915_hw_context/intel_context 2014-05-22 23:41:17 +02:00
intel_sdvo_regs.h drm/i915: use __packed instead of __attribute__((packed)) 2013-12-03 18:19:49 +01:00
intel_sdvo.c drm/i915: replace drm_get_connector_name() with direct name field use 2014-06-04 13:14:37 +10:00
intel_sideband.c drm/i915: vlv/chv: fix DSI sideband register accessing 2014-05-19 17:50:14 +02:00
intel_sprite.c drm: convert crtc and connection_mutex to ww_mutex (v5) 2014-06-05 09:54:33 +10:00
intel_tv.c drm: convert crtc and connection_mutex to ww_mutex (v5) 2014-06-05 09:54:33 +10:00
intel_uncore.c drm/i915: Disable gpu reset on i965g/gm 2014-06-05 08:52:29 +02:00
Kconfig drm/i915: Introduce mapping of user pages into video memory (userptr) ioctl 2014-05-16 19:31:29 +02:00
Makefile drm/i915: Introduce mapping of user pages into video memory (userptr) ioctl 2014-05-16 19:31:29 +02:00