1 /*
2 * Copyright(c) 2011-2017 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 */
24
25 #ifndef _GVT_PAGE_TRACK_H_
26 #define _GVT_PAGE_TRACK_H_
27
28 struct intel_vgpu_page_track;
29
30 typedef int (*gvt_page_track_handler_t)(
31 struct intel_vgpu_page_track *page_track,
32 u64 gpa, void *data, int bytes);
33
34 /* Track record for a write-protected guest page. */
35 struct intel_vgpu_page_track {
36 gvt_page_track_handler_t handler;
37 bool tracked;
38 void *priv_data;
39 };
40
41 struct intel_vgpu_page_track *intel_vgpu_find_page_track(
42 struct intel_vgpu *vgpu, unsigned long gfn);
43
44 int intel_vgpu_register_page_track(struct intel_vgpu *vgpu,
45 unsigned long gfn, gvt_page_track_handler_t handler,
46 void *priv);
47 void intel_vgpu_unregister_page_track(struct intel_vgpu *vgpu,
48 unsigned long gfn);
49
50 int intel_vgpu_enable_page_track(struct intel_vgpu *vgpu, unsigned long gfn);
51 int intel_vgpu_disable_page_track(struct intel_vgpu *vgpu, unsigned long gfn);
52
53 int intel_vgpu_page_track_handler(struct intel_vgpu *vgpu, u64 gpa,
54 void *data, unsigned int bytes);
55
56 #endif