drm/i915: Refactor gen8 semaphore offset calculation
We reuse the same calculation into two macros, and I want to add a third user. Time to refactor. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1460010558-10705-5-git-send-email-chris@chris-wilson.co.uk
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@ -52,16 +52,15 @@ struct intel_hw_status_page {
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/* seqno size is actually only a uint32, but since we plan to use MI_FLUSH_DW to
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* do the writes, and that must have qw aligned offsets, simply pretend it's 8b.
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*/
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#define i915_semaphore_seqno_size sizeof(uint64_t)
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#define gen8_semaphore_seqno_size sizeof(uint64_t)
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#define GEN8_SEMAPHORE_OFFSET(__from, __to) \
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(((__from) * I915_NUM_ENGINES + (__to)) * gen8_semaphore_seqno_size)
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#define GEN8_SIGNAL_OFFSET(__ring, to) \
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(i915_gem_obj_ggtt_offset(dev_priv->semaphore_obj) + \
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((__ring)->id * I915_NUM_ENGINES * i915_semaphore_seqno_size) + \
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(i915_semaphore_seqno_size * (to)))
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GEN8_SEMAPHORE_OFFSET((__ring)->id, (to)))
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#define GEN8_WAIT_OFFSET(__ring, from) \
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(i915_gem_obj_ggtt_offset(dev_priv->semaphore_obj) + \
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((from) * I915_NUM_ENGINES * i915_semaphore_seqno_size) + \
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(i915_semaphore_seqno_size * (__ring)->id))
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GEN8_SEMAPHORE_OFFSET(from, (__ring)->id))
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#define GEN8_RING_SEMAPHORE_INIT(e) do { \
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if (!dev_priv->semaphore_obj) { \
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