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| author |   José Roberto de Souza <jose.souza@intel.com> | 2019-03-26 16:02:23 -0700 |
|---|---|---|
| committer |   Chris Wilson <chris@chris-wilson.co.uk> | 2019-03-27 09:47:01 +0000 |
| commit | 547fcf9b1c608cf5c43c156a8773a94c6a38dc44 (patch) | |
| tree | 592561ab7ed5fb8c8b3fe4581f13b809758be318 /drivers/gpu/drm/i915/intel_dp.c | |
| parent | drm/i915: fix i386 build of 64b raw_uncore functions (diff) | |
| download | linux-dev-547fcf9b1c608cf5c43c156a8773a94c6a38dc44.tar.xz linux-dev-547fcf9b1c608cf5c43c156a8773a94c6a38dc44.zip | |
drm/i915/icl: Fix VEBOX mismatch BUG_ON()
GT VEBOX DISABLE is only 4 bits wide but it was using a 8 bits wide
mask, the remaning reserved bits is set to 0 causing 4 more
nonexistent VEBOX engines being detected as enabled, triggering the
BUG_ON() because of mismatch between vebox_mask and newly added
VEBOX_MASK().
[ 64.081621] [drm:intel_device_info_init_mmio [i915]] vdbox enable: 0005, instances: 0005
[ 64.081763] [drm:intel_device_info_init_mmio [i915]] vebox enable: 00f1, instances: 0001
[ 64.081825] intel_device_info_init_mmio:925 GEM_BUG_ON(vebox_mask != ({ unsigned int first__ = (VECS0); unsigned int count__ = (2); ((&(dev_priv)->__info)->engine_mask & (((~0UL) - (1UL << (first__)) + 1) & (~0UL >> (64 - 1 - (first__ + count__ - 1))))) >> first__; }))
[ 64.082047] ------------[ cut here ]------------
[ 64.082054] kernel BUG at drivers/gpu/drm/i915/intel_device_info.c:925!
BSpec: 20680
Fixes: 9511cb6481af ("drm/i915: Adding missing '; ' to ENGINE_INSTANCES")
Fixes: 26376a7e74d2 ("drm/i915/icl: Check for fused-off VDBOX and VEBOX instances")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Oscar Mateo <oscar.mateo@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190326230223.26336-1-jose.souza@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
0 files changed, 0 insertions, 0 deletions