19468e9c4SWei Liu /* 29468e9c4SWei Liu * Xen basic APIC support 39468e9c4SWei Liu * 49468e9c4SWei Liu * Copyright (c) 2012 Citrix 59468e9c4SWei Liu * 69468e9c4SWei Liu * Authors: 79468e9c4SWei Liu * Wei Liu <wei.liu2@citrix.com> 89468e9c4SWei Liu * 99468e9c4SWei Liu * This work is licensed under the terms of the GNU GPL version 2 or 109468e9c4SWei Liu * later. See the COPYING file in the top-level directory. 119468e9c4SWei Liu */ 12b6a0aa05SPeter Maydell #include "qemu/osdep.h" 130d09e41aSPaolo Bonzini #include "hw/i386/apic_internal.h" 14a2cb15b0SMichael S. Tsirkin #include "hw/pci/msi.h" 150d09e41aSPaolo Bonzini #include "hw/xen/xen.h" 169468e9c4SWei Liu 17a8170e5eSAvi Kivity static uint64_t xen_apic_mem_read(void *opaque, hwaddr addr, 189468e9c4SWei Liu unsigned size) 199468e9c4SWei Liu { 209468e9c4SWei Liu return ~(uint64_t)0; 219468e9c4SWei Liu } 229468e9c4SWei Liu 23a8170e5eSAvi Kivity static void xen_apic_mem_write(void *opaque, hwaddr addr, 249468e9c4SWei Liu uint64_t data, unsigned size) 259468e9c4SWei Liu { 269468e9c4SWei Liu if (size != sizeof(uint32_t)) { 279468e9c4SWei Liu fprintf(stderr, "Xen: APIC write data size = %d, invalid\n", size); 289468e9c4SWei Liu return; 299468e9c4SWei Liu } 309468e9c4SWei Liu 319468e9c4SWei Liu xen_hvm_inject_msi(addr, data); 329468e9c4SWei Liu } 339468e9c4SWei Liu 349468e9c4SWei Liu static const MemoryRegionOps xen_apic_io_ops = { 359468e9c4SWei Liu .read = xen_apic_mem_read, 369468e9c4SWei Liu .write = xen_apic_mem_write, 379468e9c4SWei Liu .endianness = DEVICE_NATIVE_ENDIAN, 389468e9c4SWei Liu }; 399468e9c4SWei Liu 40ff6986ceSxiaoqiang zhao static void xen_apic_realize(DeviceState *dev, Error **errp) 419468e9c4SWei Liu { 42ff6986ceSxiaoqiang zhao APICCommonState *s = APIC_COMMON(dev); 43ff6986ceSxiaoqiang zhao 44b33a5bbfSChunyan Liu s->vapic_control = 0; 4522fc860bSPaolo Bonzini memory_region_init_io(&s->io_memory, OBJECT(s), &xen_apic_io_ops, s, 4622fc860bSPaolo Bonzini "xen-apic-msi", APIC_SPACE_SIZE); 47*226419d6SMichael S. Tsirkin msi_nonbroken = true; 489468e9c4SWei Liu } 499468e9c4SWei Liu 509468e9c4SWei Liu static void xen_apic_set_base(APICCommonState *s, uint64_t val) 519468e9c4SWei Liu { 529468e9c4SWei Liu } 539468e9c4SWei Liu 549468e9c4SWei Liu static void xen_apic_set_tpr(APICCommonState *s, uint8_t val) 559468e9c4SWei Liu { 569468e9c4SWei Liu } 579468e9c4SWei Liu 589468e9c4SWei Liu static uint8_t xen_apic_get_tpr(APICCommonState *s) 599468e9c4SWei Liu { 609468e9c4SWei Liu return 0; 619468e9c4SWei Liu } 629468e9c4SWei Liu 639468e9c4SWei Liu static void xen_apic_vapic_base_update(APICCommonState *s) 649468e9c4SWei Liu { 659468e9c4SWei Liu } 669468e9c4SWei Liu 679468e9c4SWei Liu static void xen_apic_external_nmi(APICCommonState *s) 689468e9c4SWei Liu { 699468e9c4SWei Liu } 709468e9c4SWei Liu 719468e9c4SWei Liu static void xen_apic_class_init(ObjectClass *klass, void *data) 729468e9c4SWei Liu { 739468e9c4SWei Liu APICCommonClass *k = APIC_COMMON_CLASS(klass); 749468e9c4SWei Liu 75ff6986ceSxiaoqiang zhao k->realize = xen_apic_realize; 769468e9c4SWei Liu k->set_base = xen_apic_set_base; 779468e9c4SWei Liu k->set_tpr = xen_apic_set_tpr; 789468e9c4SWei Liu k->get_tpr = xen_apic_get_tpr; 799468e9c4SWei Liu k->vapic_base_update = xen_apic_vapic_base_update; 809468e9c4SWei Liu k->external_nmi = xen_apic_external_nmi; 819468e9c4SWei Liu } 829468e9c4SWei Liu 838c43a6f0SAndreas Färber static const TypeInfo xen_apic_info = { 849468e9c4SWei Liu .name = "xen-apic", 859468e9c4SWei Liu .parent = TYPE_APIC_COMMON, 869468e9c4SWei Liu .instance_size = sizeof(APICCommonState), 879468e9c4SWei Liu .class_init = xen_apic_class_init, 889468e9c4SWei Liu }; 899468e9c4SWei Liu 909468e9c4SWei Liu static void xen_apic_register_types(void) 919468e9c4SWei Liu { 929468e9c4SWei Liu type_register_static(&xen_apic_info); 939468e9c4SWei Liu } 949468e9c4SWei Liu 959468e9c4SWei Liu type_init(xen_apic_register_types) 96