From 8d91c1e411f55d7ea91b1183a2e9f8088fb4d5be Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Tue, 15 Dec 2015 14:52:16 -0300 Subject: Linux-libre 4.3.2-gnu --- drivers/gpu/drm/i915/intel_mocs.h | 57 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 drivers/gpu/drm/i915/intel_mocs.h (limited to 'drivers/gpu/drm/i915/intel_mocs.h') diff --git a/drivers/gpu/drm/i915/intel_mocs.h b/drivers/gpu/drm/i915/intel_mocs.h new file mode 100644 index 000000000..76e45b174 --- /dev/null +++ b/drivers/gpu/drm/i915/intel_mocs.h @@ -0,0 +1,57 @@ +/* + * 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 +#include "i915_drv.h" + +int intel_rcs_context_init_mocs(struct drm_i915_gem_request *req); + +#endif -- cgit v1.2.3-54-g00ecf