[mirror_qemu.git] / include / sysemu / kvm_xen.h

/*
 * Xen HVM emulation support in KVM
 *
 * Copyright © 2019 Oracle and/or its affiliates. All rights reserved.
 * Copyright © 2022 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * This work is licensed under the terms of the GNU GPL, version 2 or later.
 * See the COPYING file in the top-level directory.
 *
 */

#ifndef QEMU_SYSEMU_KVM_XEN_H
#define QEMU_SYSEMU_KVM_XEN_H

/* The KVM API uses these to indicate "no GPA" or "no GFN" */
#define INVALID_GPA UINT64_MAX
#define INVALID_GFN UINT64_MAX

/* QEMU plays the rôle of dom0 for "interdomain" communication. */
#define DOMID_QEMU  0

int kvm_xen_soft_reset(void);
uint32_t kvm_xen_get_caps(void);
void *kvm_xen_get_vcpu_info_hva(uint32_t vcpu_id);
bool kvm_xen_has_vcpu_callback_vector(void);
void kvm_xen_inject_vcpu_callback_vector(uint32_t vcpu_id, int type);
void kvm_xen_set_callback_asserted(void);
int kvm_xen_set_vcpu_virq(uint32_t vcpu_id, uint16_t virq, uint16_t port);
uint16_t kvm_xen_get_gnttab_max_frames(void);
uint16_t kvm_xen_get_evtchn_max_pirq(void);

#define kvm_xen_has_cap(cap) (!!(kvm_xen_get_caps() &           \
                                 KVM_XEN_HVM_CONFIG_ ## cap))

#define XEN_SPECIAL_AREA_ADDR 0xfeff8000UL
#define XEN_SPECIAL_AREA_SIZE 0x4000UL

#define XEN_SPECIALPAGE_CONSOLE     0
#define XEN_SPECIALPAGE_XENSTORE    1

#define XEN_SPECIAL_PFN(x) ((XEN_SPECIAL_AREA_ADDR >> TARGET_PAGE_BITS) + \
                            XEN_SPECIALPAGE_##x)

#endif /* QEMU_SYSEMU_KVM_XEN_H */
Commit	Line	Data
61491cf4 DW	1	/*
	2	* Xen HVM emulation support in KVM
	3	*
	4	* Copyright © 2019 Oracle and/or its affiliates. All rights reserved.
	5	* Copyright © 2022 Amazon.com, Inc. or its affiliates. All Rights Reserved.
	6	*
	7	* This work is licensed under the terms of the GNU GPL, version 2 or later.
	8	* See the COPYING file in the top-level directory.
	9	*
	10	*/
	11
	12	#ifndef QEMU_SYSEMU_KVM_XEN_H
	13	#define QEMU_SYSEMU_KVM_XEN_H
	14
d40ddd52 DW	15	/* The KVM API uses these to indicate "no GPA" or "no GFN" */
	16	#define INVALID_GPA UINT64_MAX
	17	#define INVALID_GFN UINT64_MAX
	18
	19	/* QEMU plays the rôle of dom0 for "interdomain" communication. */
	20	#define DOMID_QEMU 0
	21
79b7067d	22	int kvm_xen_soft_reset(void);
61491cf4	23	uint32_t kvm_xen_get_caps(void);
27d4075d	24	void *kvm_xen_get_vcpu_info_hva(uint32_t vcpu_id);
18e83f28	25	bool kvm_xen_has_vcpu_callback_vector(void);
27d4075d	26	void kvm_xen_inject_vcpu_callback_vector(uint32_t vcpu_id, int type);
ddf0fd9a	27	void kvm_xen_set_callback_asserted(void);
c723d4c1	28	int kvm_xen_set_vcpu_virq(uint32_t vcpu_id, uint16_t virq, uint16_t port);
6f43f2ee	29	uint16_t kvm_xen_get_gnttab_max_frames(void);
e16aff4c	30	uint16_t kvm_xen_get_evtchn_max_pirq(void);
61491cf4 DW	31
	32	#define kvm_xen_has_cap(cap) (!!(kvm_xen_get_caps() & \
	33	KVM_XEN_HVM_CONFIG_ ## cap))
	34
8b57d5c5 DW	35	#define XEN_SPECIAL_AREA_ADDR 0xfeff8000UL
	36	#define XEN_SPECIAL_AREA_SIZE 0x4000UL
	37
	38	#define XEN_SPECIALPAGE_CONSOLE 0
	39	#define XEN_SPECIALPAGE_XENSTORE 1
	40
	41	#define XEN_SPECIAL_PFN(x) ((XEN_SPECIAL_AREA_ADDR >> TARGET_PAGE_BITS) + \
	42	XEN_SPECIALPAGE_##x)
	43
61491cf4	44	#endif /* QEMU_SYSEMU_KVM_XEN_H */