[Bug 65495] [GM45] bsd ring reset fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=65495

lu hua <huax.lu at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW

--- Comment #18 from lu hua <huax.lu at intel.com> ---
(In reply to comment #17)
> Ok, the previous patch had some pretty massive issues, so new patch to test:
> 
> https://patchwork.kernel.org/patch/2816111/
> 
> It seems to work here, but please confirm that this one is still good.

Works well with this patch.
output:
rings stopped
gpu hang correctly dectected

dmesg:
[  199.855498] [drm:i915_ring_stop_set], Stopping rings 0x0000000f
[  199.857770] [drm:i915_driver_open],
[  199.857786] [drm:intel_crtc_cursor_set], cursor off
[  199.857789] [drm:intel_crtc_set_config], [CRTC:3] [FB:37] #connectors=1 (x
y) (0 0)
[  199.857794] [drm:intel_modeset_stage_output_state], [CONNECTOR:5:LVDS-1] to
[CRTC:3]
[  199.857797] [drm:intel_crtc_cursor_set], cursor off
[  199.857799] [drm:intel_crtc_set_config], [CRTC:4] [NOFB]
[  199.857801] [drm:intel_modeset_stage_output_state], [CONNECTOR:5:LVDS-1] to
[CRTC:3]
[  199.857807] [drm:i915_driver_open],
[  203.707172] [drm:i915_hangcheck_elapsed] *ERROR* stuck on render ring
[  203.707240] [drm] capturing error event; look for more information in
/sys/class/drm/card0/error
[  203.710729] [drm:i915_error_work_func], resetting chip
[  203.710774] [drm] Simulated gpu hang, resetting stop_rings
[  203.710819] [drm:i915_gem_context_init], Disabling HW Contexts; old hardware
[  203.710822] [drm:gm45_get_vblank_counter], trying to get vblank count for
disabled pipe B
[  203.710879] [drm:i9xx_update_plane], Writing base 00046000 00000000 0 0 5120
[  204.245423] [drm:intel_crtc_cursor_set], cursor off
[  204.245428] [drm:intel_crtc_set_config], [CRTC:3] [FB:37] #connectors=1 (x
y) (0 0)
[  204.245434] [drm:intel_modeset_stage_output_state], [CONNECTOR:5:LVDS-1] to
[CRTC:3]
[  204.245437] [drm:intel_crtc_cursor_set], cursor off
[  204.245438] [drm:intel_crtc_set_config], [CRTC:4] [NOFB]
[  204.245441] [drm:intel_modeset_stage_output_state], [CONNECTOR:5:LVDS-1] to
[CRTC:3]
[  204.255272] [drm:i915_driver_open],
[  204.255280] [drm:intel_crtc_cursor_set], cursor off
[  204.255282] [drm:intel_crtc_set_config], [CRTC:3] [FB:37] #connectors=1 (x
y) (0 0)
[  204.255285] [drm:intel_modeset_stage_output_state], [CONNECTOR:5:LVDS-1] to
[CRTC:3]
[  204.255287] [drm:intel_crtc_cursor_set], cursor off
[  204.255289] [drm:intel_crtc_set_config], [CRTC:4] [NOFB]
[  204.255291] [drm:intel_modeset_stage_output_state], [CONNECTOR:5:LVDS-1] to
[CRTC:3]
[  204.255297] [drm:i915_driver_open],
[  204.255332] [drm:intel_crtc_cursor_set], cursor off
[  204.255334] [drm:intel_crtc_set_config], [CRTC:3] [FB:37] #connectors=1 (x
y) (0 0)
[  204.255337] [drm:intel_modeset_stage_output_state], [CONNECTOR:5:LVDS-1] to
[CRTC:3]
[  204.255339] [drm:intel_crtc_cursor_set], cursor off
[  204.255341] [drm:intel_crtc_set_config], [CRTC:4] [NOFB]
[  204.255343] [drm:intel_modeset_stage_output_state], [CONNECTOR:5:LVDS-1] to
[CRTC:3]
[  204.646094] [drm:i915_error_state_write], Resetting error state

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