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  *    Dexuan Cui
26  *    Jike Song <jike.song@intel.com>
27  *
28  * Contributors:
29  *    Zhi Wang <zhi.a.wang@intel.com>
30  *
31  */
32 
33 #ifndef _GVT_HYPERCALL_H_
34 #define _GVT_HYPERCALL_H_
35 
36 #include <linux/types.h>
37 
38 struct device;
39 
40 enum hypervisor_type {
41 	INTEL_GVT_HYPERVISOR_XEN = 0,
42 	INTEL_GVT_HYPERVISOR_KVM,
43 };
44 
45 /*
46  * Specific GVT-g MPT modules function collections. Currently GVT-g supports
47  * both Xen and KVM by providing dedicated hypervisor-related MPT modules.
48  */
49 struct intel_gvt_mpt {
50 	enum hypervisor_type type;
51 	int (*host_init)(struct device *dev, void *gvt, const void *ops);
52 	void (*host_exit)(struct device *dev, void *gvt);
53 	int (*attach_vgpu)(void *vgpu, unsigned long *handle);
54 	void (*detach_vgpu)(void *vgpu);
55 	int (*inject_msi)(unsigned long handle, u32 addr, u16 data);
56 	unsigned long (*from_virt_to_mfn)(void *p);
57 	int (*enable_page_track)(unsigned long handle, u64 gfn);
58 	int (*disable_page_track)(unsigned long handle, u64 gfn);
59 	int (*read_gpa)(unsigned long handle, unsigned long gpa, void *buf,
60 			unsigned long len);
61 	int (*write_gpa)(unsigned long handle, unsigned long gpa, void *buf,
62 			 unsigned long len);
63 	unsigned long (*gfn_to_mfn)(unsigned long handle, unsigned long gfn);
64 
65 	int (*dma_map_guest_page)(unsigned long handle, unsigned long gfn,
66 				  unsigned long size, dma_addr_t *dma_addr);
67 	void (*dma_unmap_guest_page)(unsigned long handle, dma_addr_t dma_addr);
68 
69 	int (*dma_pin_guest_page)(unsigned long handle, dma_addr_t dma_addr);
70 
71 	int (*map_gfn_to_mfn)(unsigned long handle, unsigned long gfn,
72 			      unsigned long mfn, unsigned int nr, bool map);
73 	int (*set_trap_area)(unsigned long handle, u64 start, u64 end,
74 			     bool map);
75 	int (*set_opregion)(void *vgpu);
76 	int (*set_edid)(void *vgpu, int port_num);
77 	int (*get_vfio_device)(void *vgpu);
78 	void (*put_vfio_device)(void *vgpu);
79 	bool (*is_valid_gfn)(unsigned long handle, unsigned long gfn);
80 };
81 
82 #endif /* _GVT_HYPERCALL_H_ */
83