xref: /openbmc/linux/include/xen/interface/hvm/hvm_op.h (revision e7bae9bb)
1 /*
2  * Permission is hereby granted, free of charge, to any person obtaining a copy
3  * of this software and associated documentation files (the "Software"), to
4  * deal in the Software without restriction, including without limitation the
5  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
6  * sell copies of the Software, and to permit persons to whom the Software is
7  * furnished to do so, subject to the following conditions:
8  *
9  * The above copyright notice and this permission notice shall be included in
10  * all copies or substantial portions of the Software.
11  *
12  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
13  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
15  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
16  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
17  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
18  * DEALINGS IN THE SOFTWARE.
19  */
20 
21 #ifndef __XEN_PUBLIC_HVM_HVM_OP_H__
22 #define __XEN_PUBLIC_HVM_HVM_OP_H__
23 
24 #include <xen/interface/xen.h>
25 
26 /* Get/set subcommands: the second argument of the hypercall is a
27  * pointer to a xen_hvm_param struct. */
28 #define HVMOP_set_param           0
29 #define HVMOP_get_param           1
30 struct xen_hvm_param {
31     domid_t  domid;    /* IN */
32     uint32_t index;    /* IN */
33     uint64_t value;    /* IN/OUT */
34 };
35 DEFINE_GUEST_HANDLE_STRUCT(xen_hvm_param);
36 
37 /* Hint from PV drivers for pagetable destruction. */
38 #define HVMOP_pagetable_dying       9
39 struct xen_hvm_pagetable_dying {
40     /* Domain with a pagetable about to be destroyed. */
41     domid_t  domid;
42     /* guest physical address of the toplevel pagetable dying */
43     aligned_u64 gpa;
44 };
45 typedef struct xen_hvm_pagetable_dying xen_hvm_pagetable_dying_t;
46 DEFINE_GUEST_HANDLE_STRUCT(xen_hvm_pagetable_dying_t);
47 
48 enum hvmmem_type_t {
49     HVMMEM_ram_rw,             /* Normal read/write guest RAM */
50     HVMMEM_ram_ro,             /* Read-only; writes are discarded */
51     HVMMEM_mmio_dm,            /* Reads and write go to the device model */
52 };
53 
54 #define HVMOP_get_mem_type    15
55 /* Return hvmmem_type_t for the specified pfn. */
56 struct xen_hvm_get_mem_type {
57     /* Domain to be queried. */
58     domid_t domid;
59     /* OUT variable. */
60     uint16_t mem_type;
61     uint16_t pad[2]; /* align next field on 8-byte boundary */
62     /* IN variable. */
63     uint64_t pfn;
64 };
65 DEFINE_GUEST_HANDLE_STRUCT(xen_hvm_get_mem_type);
66 
67 #endif /* __XEN_PUBLIC_HVM_HVM_OP_H__ */
68