1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun /* Simple wrappers around HVM functions */
3*4882a593Smuzhiyun #ifndef XEN_HVM_H__
4*4882a593Smuzhiyun #define XEN_HVM_H__
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #include <xen/interface/hvm/params.h>
7*4882a593Smuzhiyun #include <asm/xen/hypercall.h>
8*4882a593Smuzhiyun
param_name(int op)9*4882a593Smuzhiyun static const char *param_name(int op)
10*4882a593Smuzhiyun {
11*4882a593Smuzhiyun #define PARAM(x) [HVM_PARAM_##x] = #x
12*4882a593Smuzhiyun static const char *const names[] = {
13*4882a593Smuzhiyun PARAM(CALLBACK_IRQ),
14*4882a593Smuzhiyun PARAM(STORE_PFN),
15*4882a593Smuzhiyun PARAM(STORE_EVTCHN),
16*4882a593Smuzhiyun PARAM(PAE_ENABLED),
17*4882a593Smuzhiyun PARAM(IOREQ_PFN),
18*4882a593Smuzhiyun PARAM(BUFIOREQ_PFN),
19*4882a593Smuzhiyun PARAM(TIMER_MODE),
20*4882a593Smuzhiyun PARAM(HPET_ENABLED),
21*4882a593Smuzhiyun PARAM(IDENT_PT),
22*4882a593Smuzhiyun PARAM(DM_DOMAIN),
23*4882a593Smuzhiyun PARAM(ACPI_S_STATE),
24*4882a593Smuzhiyun PARAM(VM86_TSS),
25*4882a593Smuzhiyun PARAM(VPT_ALIGN),
26*4882a593Smuzhiyun PARAM(CONSOLE_PFN),
27*4882a593Smuzhiyun PARAM(CONSOLE_EVTCHN),
28*4882a593Smuzhiyun };
29*4882a593Smuzhiyun #undef PARAM
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun if (op >= ARRAY_SIZE(names))
32*4882a593Smuzhiyun return "unknown";
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun if (!names[op])
35*4882a593Smuzhiyun return "reserved";
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun return names[op];
38*4882a593Smuzhiyun }
hvm_get_parameter(int idx,uint64_t * value)39*4882a593Smuzhiyun static inline int hvm_get_parameter(int idx, uint64_t *value)
40*4882a593Smuzhiyun {
41*4882a593Smuzhiyun struct xen_hvm_param xhv;
42*4882a593Smuzhiyun int r;
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun xhv.domid = DOMID_SELF;
45*4882a593Smuzhiyun xhv.index = idx;
46*4882a593Smuzhiyun r = HYPERVISOR_hvm_op(HVMOP_get_param, &xhv);
47*4882a593Smuzhiyun if (r < 0) {
48*4882a593Smuzhiyun pr_err("Cannot get hvm parameter %s (%d): %d!\n",
49*4882a593Smuzhiyun param_name(idx), idx, r);
50*4882a593Smuzhiyun return r;
51*4882a593Smuzhiyun }
52*4882a593Smuzhiyun *value = xhv.value;
53*4882a593Smuzhiyun return r;
54*4882a593Smuzhiyun }
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun #define HVM_CALLBACK_VIA_TYPE_VECTOR 0x2
57*4882a593Smuzhiyun #define HVM_CALLBACK_VIA_TYPE_SHIFT 56
58*4882a593Smuzhiyun #define HVM_CALLBACK_VECTOR(x) (((uint64_t)HVM_CALLBACK_VIA_TYPE_VECTOR)<<\
59*4882a593Smuzhiyun HVM_CALLBACK_VIA_TYPE_SHIFT | (x))
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun void xen_setup_callback_vector(void);
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun #endif /* XEN_HVM_H__ */
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