Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
18f19aa6 JF |
2 | /* Simple wrappers around HVM functions */ |
3 | #ifndef XEN_HVM_H__ | |
4 | #define XEN_HVM_H__ | |
5 | ||
6 | #include <xen/interface/hvm/params.h> | |
38e20b07 | 7 | #include <asm/xen/hypercall.h> |
18f19aa6 | 8 | |
6d877e6b KRW |
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 | } | |
18f19aa6 JF |
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) { | |
283c0972 JP |
48 | pr_err("Cannot get hvm parameter %s (%d): %d!\n", |
49 | param_name(idx), idx, r); | |
18f19aa6 JF |
50 | return r; |
51 | } | |
52 | *value = xhv.value; | |
53 | return r; | |
54 | } | |
55 | ||
38e20b07 SY |
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 | ||
18f19aa6 | 61 | #endif /* XEN_HVM_H__ */ |