[mirror_ubuntu-bionic-kernel.git] / include / xen / hvm.h

/* Simple wrappers around HVM functions */
#ifndef XEN_HVM_H__
#define XEN_HVM_H__

#include <xen/interface/hvm/params.h>
#include <asm/xen/hypercall.h>

static const char *param_name(int op)
{
#define PARAM(x) [HVM_PARAM_##x] = #x
	static const char *const names[] = {
		PARAM(CALLBACK_IRQ),
		PARAM(STORE_PFN),
		PARAM(STORE_EVTCHN),
		PARAM(PAE_ENABLED),
		PARAM(IOREQ_PFN),
		PARAM(BUFIOREQ_PFN),
		PARAM(TIMER_MODE),
		PARAM(HPET_ENABLED),
		PARAM(IDENT_PT),
		PARAM(DM_DOMAIN),
		PARAM(ACPI_S_STATE),
		PARAM(VM86_TSS),
		PARAM(VPT_ALIGN),
		PARAM(CONSOLE_PFN),
		PARAM(CONSOLE_EVTCHN),
	};
#undef PARAM

	if (op >= ARRAY_SIZE(names))
		return "unknown";

	if (!names[op])
		return "reserved";

	return names[op];
}
static inline int hvm_get_parameter(int idx, uint64_t *value)
{
	struct xen_hvm_param xhv;
	int r;

	xhv.domid = DOMID_SELF;
	xhv.index = idx;
	r = HYPERVISOR_hvm_op(HVMOP_get_param, &xhv);
	if (r < 0) {
		pr_err("Cannot get hvm parameter %s (%d): %d!\n",
		       param_name(idx), idx, r);
		return r;
	}
	*value = xhv.value;
	return r;
}

#define HVM_CALLBACK_VIA_TYPE_VECTOR 0x2
#define HVM_CALLBACK_VIA_TYPE_SHIFT 56
#define HVM_CALLBACK_VECTOR(x) (((uint64_t)HVM_CALLBACK_VIA_TYPE_VECTOR)<<\
		HVM_CALLBACK_VIA_TYPE_SHIFT | (x))

#endif /* XEN_HVM_H__ */
Commit	Line	Data
18f19aa6 JF	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
6d877e6b KRW	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	}
18f19aa6 JF	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) {
283c0972 JP	47	pr_err("Cannot get hvm parameter %s (%d): %d!\n",
283c0972 JP	48	param_name(idx), idx, r);
18f19aa6 JF	49	return r;
	50	}
	51	*value = xhv.value;
	52	return r;
	53	}
	54
38e20b07 SY	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__ */