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