drm/i915: Introduce i915_ggtt_offset()

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This little helper only exists to safely discard the upper unused 32bits
of the general 64-bit VMA address - as we know that all Global GTT
currently are less than 4GiB in size and so that the upper bits must be
zero. In many places, we use a u32 for the global GTT offset and we want
to document where we are discarding the full VMA offset.

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/1471254551-25805-28-git-send-email-chris@chris-wilson.co.uk

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This commit is contained in:

Chris Wilson 2016-08-15 10:49:07 +01:00

parent 058d88c433

commit bde13ebdab

13 changed files with 70 additions and 59 deletions

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2

drivers/gpu/drm/i915/i915_debugfs.c

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2

drivers/gpu/drm/i915/i915_drv.h

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11

drivers/gpu/drm/i915/i915_gem.c

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6

drivers/gpu/drm/i915/i915_gem_context.c

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9

drivers/gpu/drm/i915/i915_gem_gtt.h

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15

drivers/gpu/drm/i915/i915_guc_submission.c

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10

drivers/gpu/drm/i915/intel_display.c

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4

drivers/gpu/drm/i915/intel_engine_cs.c

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6

drivers/gpu/drm/i915/intel_fbdev.c

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6

drivers/gpu/drm/i915/intel_guc_loader.c

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20

drivers/gpu/drm/i915/intel_lrc.c

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10

drivers/gpu/drm/i915/intel_overlay.c

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28

drivers/gpu/drm/i915/intel_ringbuffer.c

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