drm/i915: Prepare for GuC-based command submission

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This adds the first of the data structures used to communicate with the
GuC (the pool of guc_context structures).

We create a GuC-specific wrapper round the GEM object allocator as all
GEM objects shared with the GuC must be pinned into GGTT space at an
address that is NOT in the range [0..WOPCM_TOP), as that range of GGTT
addresses is not accessible to the GuC (from the GuC's point of view,
it's permanently reserved for other objects such as the BootROM & SRAM).

Later, we will need to allocate additional GuC-sharable objects for the
submission client(s) and the GuC's debug log.

v2:
    Remove redundant initialisation [Chris Wilson]
    Defer adding struct members until needed [Chris Wilson]
    Local functions should pass dev_priv rather than dev [Chris Wilson]

v5:
    Invalidate GuC TLB after allocating and pinning a new object

v6:
    Rebased

Issue: VIZ-4884
Signed-off-by: Alex Dai <yu.dai@intel.com>
Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Reviewed-by: Tom O'Rourke <Tom.O'Rourke@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

...

This commit is contained in:

Alex Dai 2015-08-12 15:43:39 +01:00 • committed by Daniel Vetter

parent 919f1f55d9

commit bac427f8ab

4 changed files with 148 additions and 1 deletions

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3

drivers/gpu/drm/i915/Makefile

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118

drivers/gpu/drm/i915/i915_guc_submission.c

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7

drivers/gpu/drm/i915/intel_guc.h

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21

drivers/gpu/drm/i915/intel_guc_loader.c

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