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      1 /*	$NetBSD: mmio_context.h,v 1.2 2021/12/18 23:45:31 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice (including the next
     14  * paragraph) shall be included in all copies or substantial portions of the
     15  * Software.
     16  *
     17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     23  * SOFTWARE.
     24  *
     25  * Authors:
     26  *    Eddie Dong <eddie.dong (at) intel.com>
     27  *    Kevin Tian <kevin.tian (at) intel.com>
     28  *
     29  * Contributors:
     30  *    Zhi Wang <zhi.a.wang (at) intel.com>
     31  *    Changbin Du <changbin.du (at) intel.com>
     32  *    Zhenyu Wang <zhenyuw (at) linux.intel.com>
     33  *    Tina Zhang <tina.zhang (at) intel.com>
     34  *    Bing Niu <bing.niu (at) intel.com>
     35  *
     36  */
     37 
     38 #ifndef __GVT_RENDER_H__
     39 #define __GVT_RENDER_H__
     40 
     41 struct engine_mmio {
     42 	int ring_id;
     43 	i915_reg_t reg;
     44 	u32 mask;
     45 	bool in_context;
     46 	u32 value;
     47 };
     48 
     49 void intel_gvt_switch_mmio(struct intel_vgpu *pre,
     50 			   struct intel_vgpu *next, int ring_id);
     51 
     52 void intel_gvt_init_engine_mmio_context(struct intel_gvt *gvt);
     53 
     54 bool is_inhibit_context(struct intel_context *ce);
     55 
     56 int intel_vgpu_restore_inhibit_context(struct intel_vgpu *vgpu,
     57 				       struct i915_request *req);
     58 #define IS_RESTORE_INHIBIT(a)	\
     59 	(_MASKED_BIT_ENABLE(CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT) == \
     60 	((a) & _MASKED_BIT_ENABLE(CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT)))
     61 
     62 #endif
     63