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author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-10-09 12:03:01 +0100 |
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committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-10-09 17:07:29 +0100 |
commit | 67e6456485c7c04838a5dad720886726ae5590e0 (patch) | |
tree | 064632fdab46beff2fdd9e7bfeceb3fc116d8c1e /drivers/gpu/drm/i915/intel_uncore.h | |
parent | ff97d3ae6951101a85e5153cb128292d7119d15c (diff) | |
download | linux-67e6456485c7c04838a5dad720886726ae5590e0.tar.bz2 |
drm/i915: Provide an assert for when we expect forcewake to be held
Add assert_forcewakes_active() (the complementary function to
assert_forcewakes_inactive) that documents the requirement of a
function for its callers to be holding the forcewake ref (i.e. the
function is part of a sequence over which RC6 must be prevented).
One such example is during ringbuffer reset, where RC6 must be held
across the whole reinitialisation sequence.
v2: Include debug information in the WARN so we know which fw domain is
missing.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> #v1
Link: https://patchwork.freedesktop.org/patch/msgid/20171009110301.21705-5-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/intel_uncore.h')
-rw-r--r-- | drivers/gpu/drm/i915/intel_uncore.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_uncore.h b/drivers/gpu/drm/i915/intel_uncore.h index 66eae2ce2f29..582771251b57 100644 --- a/drivers/gpu/drm/i915/intel_uncore.h +++ b/drivers/gpu/drm/i915/intel_uncore.h @@ -137,6 +137,8 @@ void intel_uncore_resume_early(struct drm_i915_private *dev_priv); u64 intel_uncore_edram_size(struct drm_i915_private *dev_priv); void assert_forcewakes_inactive(struct drm_i915_private *dev_priv); +void assert_forcewakes_active(struct drm_i915_private *dev_priv, + enum forcewake_domains fw_domains); const char *intel_uncore_forcewake_domain_to_str(const enum forcewake_domain_id id); enum forcewake_domains |