1 /* SPDX-License-Identifier: MIT
2  *
3  * hvm_op.h
4  *
5  * Copyright (c) 2007, Keir Fraser
6  */
7 
8 #ifndef __XEN_PUBLIC_HVM_HVM_OP_H__
9 #define __XEN_PUBLIC_HVM_HVM_OP_H__
10 
11 /* Get/set subcommands: the second argument of the hypercall is a
12  * pointer to a xen_hvm_param struct.
13  */
14 #define HVMOP_set_param           0
15 #define HVMOP_get_param           1
16 struct xen_hvm_param {
17 	domid_t  domid;    /* IN */
18 	u32 index;    /* IN */
19 	u64 value;    /* IN/OUT */
20 };
21 
22 DEFINE_GUEST_HANDLE_STRUCT(xen_hvm_param);
23 
24 /* Hint from PV drivers for pagetable destruction. */
25 #define HVMOP_pagetable_dying       9
26 struct xen_hvm_pagetable_dying {
27 	/* Domain with a pagetable about to be destroyed. */
28 	domid_t  domid;
29 	/* guest physical address of the toplevel pagetable dying */
30 	aligned_u64 gpa;
31 };
32 
33 DEFINE_GUEST_HANDLE_STRUCT(xen_hvm_pagetable_dying);
34 
35 enum hvmmem_type_t {
36 	HVMMEM_ram_rw,             /* Normal read/write guest RAM */
37 	HVMMEM_ram_ro,             /* Read-only; writes are discarded */
38 	HVMMEM_mmio_dm,            /* Reads and write go to the device model */
39 };
40 
41 #define HVMOP_get_mem_type    15
42 /* Return hvmmem_type_t for the specified pfn. */
43 struct xen_hvm_get_mem_type {
44 	/* Domain to be queried. */
45 	domid_t domid;
46 	/* OUT variable. */
47 	u16 mem_type;
48 	u16 pad[2]; /* align next field on 8-byte boundary */
49 	/* IN variable. */
50 	u64 pfn;
51 };
52 
53 DEFINE_GUEST_HANDLE_STRUCT(xen_hvm_get_mem_type);
54 
55 #endif /* __XEN_PUBLIC_HVM_HVM_OP_H__ */
56