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drm/i915: Waterproof verification of gen9 forcewake table ranges 

We have to make sure there are no holes in the table in Gen9.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1479388435-12062-1-git-send-email-tvrtko.ursulin@linux.intel.com
hifive-unleashed-5.1
Tvrtko Ursulin 2016-11-17 13:13:55 +00:00
parent 08c4d7fcb3
commit a194b8cb84
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/i915/intel_uncore.c
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@ -647,6 +647,8 @@ intel_fw_table_check(struct drm_i915_private *dev_priv)
num_ranges = dev_priv->uncore.fw_domains_table_entries;
for (i = 0, prev = -1; i < num_ranges; i++, ranges++) {
WARN_ON_ONCE(IS_GEN9(dev_priv) &&
(prev + 1) != (s32)ranges->start);
WARN_ON_ONCE(prev >= (s32)ranges->start);
prev = ranges->start;
WARN_ON_ONCE(prev >= (s32)ranges->end);