[Bug 82019] New: Unreal Engine Effects Cave demo lockup HD 7970M

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82019

          Priority: medium
            Bug ID: 82019
          Assignee: dri-devel at lists.freedesktop.org
           Summary: Unreal Engine Effects Cave demo lockup HD 7970M
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: haagch at frickel.club
          Hardware: Other
            Status: NEW
           Version: git
         Component: Drivers/Gallium/radeonsi
           Product: Mesa

Created attachment 103826
  --> https://bugs.freedesktop.org/attachment.cgi?id=103826&action=edit
full dmesg with lockup

On my ivy bridge/HD 7970M hybrid laptop, started with

DRI_PRIME=1 GALLIUM_HUD="fps,VRAM-usage+GTT-usage" ./Effects
so no hyperz.

mesa git with f4b0ab7afd83c811329211eae8167c9bf238870c reverted because of bug
81834 and with 0001-glsl-support-unsigned-increment-in-ir_loop.patch from
https://bugs.freedesktop.org/show_bug.cgi?id=80880#c10

On reddit someone with a HD 7790 said it works
(http://www.reddit.com/r/linux_gaming/comments/2cbspp/unreal_engine_4_starts_working_on_the_radeonsi/cjdzh2v)

For me with my HD 7970M it produces this hang on both 3.16-rc7 and
agd5f/drm-next-3.17-rebased-on-fixes:

ring 3 stalled for more than 10296msec
GPU lockup (waiting for 0x0000000000000cdc last fence id 0x0000000000000cdb on
ring 3)
scheduling IB failed (-35).
Saved 525 dwords of commands on ring 0.
GPU softreset: 0x0000004D
  GRBM_STATUS               = 0xE7DE5028
  GRBM_STATUS_SE0           = 0xEF800002
  GRBM_STATUS_SE1           = 0xEFC00002
  SRBM_STATUS               = 0x200000C0
  SRBM_STATUS2              = 0x00000000
  R_008674_CP_STALLED_STAT1 = 0x00000000
  R_008678_CP_STALLED_STAT2 = 0x00010800
  R_00867C_CP_BUSY_STAT     = 0x00408006
  R_008680_CP_STAT          = 0x84038647
  R_00D034_DMA_STATUS_REG   = 0x45483106
  R_00D834_DMA_STATUS_REG   = 0x44C83D57
  VM_CONTEXT1_PROTECTION_FAULT_ADDR   0x00000000
  VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x00000000
GRBM_SOFT_RESET=0x0000DDFF
SRBM_SOFT_RESET=0x00100100
  GRBM_STATUS               = 0x00003028
  GRBM_STATUS_SE0           = 0x00000006
  GRBM_STATUS_SE1           = 0x00000006
  SRBM_STATUS               = 0x200000C0
  SRBM_STATUS2              = 0x00000000
  R_008674_CP_STALLED_STAT1 = 0x00000000
  R_008678_CP_STALLED_STAT2 = 0x00000000
  R_00867C_CP_BUSY_STAT     = 0x00000000
  R_008680_CP_STAT          = 0x00000000
  R_00D034_DMA_STATUS_REG   = 0x44C83D57
  R_00D834_DMA_STATUS_REG   = 0x44C83D57
GPU reset succeeded, trying to resume

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