Merge tag 'driver-core-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...
[sfrench/cifs-2.6.git] / include / xen / hvm.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Simple wrappers around HVM functions */
3 #ifndef XEN_HVM_H__
4 #define XEN_HVM_H__
5
6 #include <xen/interface/hvm/params.h>
7 #include <asm/xen/hypercall.h>
8
9 static const char *param_name(int op)
10 {
11 #define PARAM(x) [HVM_PARAM_##x] = #x
12         static const char *const names[] = {
13                 PARAM(CALLBACK_IRQ),
14                 PARAM(STORE_PFN),
15                 PARAM(STORE_EVTCHN),
16                 PARAM(PAE_ENABLED),
17                 PARAM(IOREQ_PFN),
18                 PARAM(BUFIOREQ_PFN),
19                 PARAM(TIMER_MODE),
20                 PARAM(HPET_ENABLED),
21                 PARAM(IDENT_PT),
22                 PARAM(DM_DOMAIN),
23                 PARAM(ACPI_S_STATE),
24                 PARAM(VM86_TSS),
25                 PARAM(VPT_ALIGN),
26                 PARAM(CONSOLE_PFN),
27                 PARAM(CONSOLE_EVTCHN),
28         };
29 #undef PARAM
30
31         if (op >= ARRAY_SIZE(names))
32                 return "unknown";
33
34         if (!names[op])
35                 return "reserved";
36
37         return names[op];
38 }
39 static inline int hvm_get_parameter(int idx, uint64_t *value)
40 {
41         struct xen_hvm_param xhv;
42         int r;
43
44         xhv.domid = DOMID_SELF;
45         xhv.index = idx;
46         r = HYPERVISOR_hvm_op(HVMOP_get_param, &xhv);
47         if (r < 0) {
48                 pr_err("Cannot get hvm parameter %s (%d): %d!\n",
49                        param_name(idx), idx, r);
50                 return r;
51         }
52         *value = xhv.value;
53         return r;
54 }
55
56 #define HVM_CALLBACK_VIA_TYPE_VECTOR 0x2
57 #define HVM_CALLBACK_VIA_TYPE_SHIFT 56
58 #define HVM_CALLBACK_VECTOR(x) (((uint64_t)HVM_CALLBACK_VIA_TYPE_VECTOR)<<\
59                 HVM_CALLBACK_VIA_TYPE_SHIFT | (x))
60
61 #endif /* XEN_HVM_H__ */