1 /* $NetBSD: page_track.h,v 1.2 2021/12/18 23:45:31 riastradh Exp $ */ 2 3 /* 4 * Copyright(c) 2011-2017 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 */ 26 27 #ifndef _GVT_PAGE_TRACK_H_ 28 #define _GVT_PAGE_TRACK_H_ 29 30 #include <linux/types.h> 31 32 struct intel_vgpu; 33 struct intel_vgpu_page_track; 34 35 typedef int (*gvt_page_track_handler_t)( 36 struct intel_vgpu_page_track *page_track, 37 u64 gpa, void *data, int bytes); 38 39 /* Track record for a write-protected guest page. */ 40 struct intel_vgpu_page_track { 41 gvt_page_track_handler_t handler; 42 bool tracked; 43 void *priv_data; 44 }; 45 46 struct intel_vgpu_page_track *intel_vgpu_find_page_track( 47 struct intel_vgpu *vgpu, unsigned long gfn); 48 49 int intel_vgpu_register_page_track(struct intel_vgpu *vgpu, 50 unsigned long gfn, gvt_page_track_handler_t handler, 51 void *priv); 52 void intel_vgpu_unregister_page_track(struct intel_vgpu *vgpu, 53 unsigned long gfn); 54 55 int intel_vgpu_enable_page_track(struct intel_vgpu *vgpu, unsigned long gfn); 56 int intel_vgpu_disable_page_track(struct intel_vgpu *vgpu, unsigned long gfn); 57 58 int intel_vgpu_page_track_handler(struct intel_vgpu *vgpu, u64 gpa, 59 void *data, unsigned int bytes); 60 61 #endif 62