drm/i915/tgl: Updated Private PAT programming

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Gen12 removes the target-cache and age fields from the private PAT
because MOCS now have the capability to set these itself. Only memory-type
field should be programmed in the ppat, the reminded bits are reserved.

Since now there are only 4 possible combinations, we could set only 4
PPAT and leave the reminded 4 as UC, but I left them as WB as we used
to have before.

Also these registers have been relocated to the 0x4800-0x481c range.

HSDES: 1406402661
BSpec: 31654
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190817093902.2171-33-lucas.demarchi@intel.com

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This commit is contained in:

Michel Thierry 2019-08-17 02:38:54 -07:00 • committed by Chris Wilson

parent 13e53c5c53

commit b41e63d881

2 changed files with 17 additions and 1 deletions

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17

drivers/gpu/drm/i915/i915_gem_gtt.c

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1

drivers/gpu/drm/i915/i915_reg.h

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