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 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 22 int kvm_xen_soft_reset(void); 23 uint32_t kvm_xen_get_caps(void); 24 void *kvm_xen_get_vcpu_info_hva(uint32_t vcpu_id); 25 void kvm_xen_inject_vcpu_callback_vector(uint32_t vcpu_id, int type); 26 void kvm_xen_set_callback_asserted(void); 27 int kvm_xen_set_vcpu_virq(uint32_t vcpu_id, uint16_t virq, uint16_t port); 28 uint16_t kvm_xen_get_gnttab_max_frames(void); 29 uint16_t kvm_xen_get_evtchn_max_pirq(void); 30 31 #define kvm_xen_has_cap(cap) (!!(kvm_xen_get_caps() & \ 32 KVM_XEN_HVM_CONFIG_ ## cap)) 33 34 #define XEN_SPECIAL_AREA_ADDR 0xfeff8000UL 35 #define XEN_SPECIAL_AREA_SIZE 0x4000UL 36 37 #define XEN_SPECIALPAGE_CONSOLE 0 38 #define XEN_SPECIALPAGE_XENSTORE 1 39 40 #define XEN_SPECIAL_PFN(x) ((XEN_SPECIAL_AREA_ADDR >> TARGET_PAGE_BITS) + \ 41 XEN_SPECIALPAGE_##x) 42 43 #endif /* QEMU_SYSEMU_KVM_XEN_H */ 44