drivers/gpu/drm/i915/gvt/mmio_context.h

   1 /*
   2  * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  * Authors:
  24  *    Eddie Dong <eddie.dong@intel.com>
  25  *    Kevin Tian <kevin.tian@intel.com>
  26  *
  27  * Contributors:
  28  *    Zhi Wang <zhi.a.wang@intel.com>
  29  *    Changbin Du <changbin.du@intel.com>
  30  *    Zhenyu Wang <zhenyuw@linux.intel.com>
  31  *    Tina Zhang <tina.zhang@intel.com>
  32  *    Bing Niu <bing.niu@intel.com>
  33  *
  34  */
  35
  36 #ifndef __GVT_RENDER_H__
  37 #define __GVT_RENDER_H__
  38
  39 struct engine_mmio {
  40         enum intel_engine_id id;
  41         i915_reg_t reg;
  42         u32 mask;
  43         bool in_context;
  44         u32 value;
  45 };
  46
  47 void intel_gvt_switch_mmio(struct intel_vgpu *pre,
  48                            struct intel_vgpu *next,
  49                            const struct intel_engine_cs *engine);
  50
  51 void intel_gvt_init_engine_mmio_context(struct intel_gvt *gvt);
  52
  53 bool is_inhibit_context(struct intel_context *ce);
  54
  55 int intel_vgpu_restore_inhibit_context(struct intel_vgpu *vgpu,
  56                                        struct i915_request *req);
  57
  58 #define IS_RESTORE_INHIBIT(a) \
  59         IS_MASKED_BITS_ENABLED(a, CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT)
  60
  61 #endif