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Merge tag 'dmaengine-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw...
[mirror_ubuntu-bionic-kernel.git] / include / xen / hvm.h
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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>
38e20b07 6#include <asm/xen/hypercall.h>
18f19aa6 7
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8static 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}
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38static 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) {
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47 pr_err("Cannot get hvm parameter %s (%d): %d!\n",
48 param_name(idx), idx, r);
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49 return r;
50 }
51 *value = xhv.value;
52 return r;
53}
54
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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
18f19aa6 60#endif /* XEN_HVM_H__ */