Release 4.11 drivers/gpu/drm/i915/intel_mocs.h
/*
* Copyright (c) 2015 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef INTEL_MOCS_H
#define INTEL_MOCS_H
/**
* DOC: Memory Objects Control State (MOCS)
*
* Motivation:
* In previous Gens the MOCS settings was a value that was set by user land as
* part of the batch. In Gen9 this has changed to be a single table (per ring)
* that all batches now reference by index instead of programming the MOCS
* directly.
*
* The one wrinkle in this is that only PART of the MOCS tables are included
* in context (The GFX_MOCS_0 - GFX_MOCS_64 and the LNCFCMOCS0 - LNCFCMOCS32
* registers). The rest are not (the settings for the other rings).
*
* This table needs to be set at system start-up because the way the table
* interacts with the contexts and the GmmLib interface.
*
*
* Implementation:
*
* The tables (one per supported platform) are defined in intel_mocs.c
* and are programmed in the first batch after the context is loaded
* (with the hardware workarounds). This will then let the usual
* context handling keep the MOCS in step.
*/
#include <drm/drmP.h>
#include "i915_drv.h"
int intel_rcs_context_init_mocs(struct drm_i915_gem_request *req);
void intel_mocs_init_l3cc_table(struct drm_i915_private *dev_priv);
int intel_mocs_init_engine(struct intel_engine_cs *engine);
#endif
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