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 */ 120d09e41aSPaolo Bonzini #include "hw/i386/apic_internal.h" 13a2cb15b0SMichael S. Tsirkin #include "hw/pci/msi.h" 140d09e41aSPaolo Bonzini #include "hw/xen/xen.h" 159468e9c4SWei Liu 16a8170e5eSAvi Kivity static uint64_t xen_apic_mem_read(void *opaque, hwaddr addr, 179468e9c4SWei Liu unsigned size) 189468e9c4SWei Liu { 199468e9c4SWei Liu return ~(uint64_t)0; 209468e9c4SWei Liu } 219468e9c4SWei Liu 22a8170e5eSAvi Kivity static void xen_apic_mem_write(void *opaque, hwaddr addr, 239468e9c4SWei Liu uint64_t data, unsigned size) 249468e9c4SWei Liu { 259468e9c4SWei Liu if (size != sizeof(uint32_t)) { 269468e9c4SWei Liu fprintf(stderr, "Xen: APIC write data size = %d, invalid\n", size); 279468e9c4SWei Liu return; 289468e9c4SWei Liu } 299468e9c4SWei Liu 309468e9c4SWei Liu xen_hvm_inject_msi(addr, data); 319468e9c4SWei Liu } 329468e9c4SWei Liu 339468e9c4SWei Liu static const MemoryRegionOps xen_apic_io_ops = { 349468e9c4SWei Liu .read = xen_apic_mem_read, 359468e9c4SWei Liu .write = xen_apic_mem_write, 369468e9c4SWei Liu .endianness = DEVICE_NATIVE_ENDIAN, 379468e9c4SWei Liu }; 389468e9c4SWei Liu 39*ff6986ceSxiaoqiang zhao static void xen_apic_realize(DeviceState *dev, Error **errp) 409468e9c4SWei Liu { 41*ff6986ceSxiaoqiang zhao APICCommonState *s = APIC_COMMON(dev); 42*ff6986ceSxiaoqiang zhao 4322fc860bSPaolo Bonzini memory_region_init_io(&s->io_memory, OBJECT(s), &xen_apic_io_ops, s, 4422fc860bSPaolo Bonzini "xen-apic-msi", APIC_SPACE_SIZE); 4508a82ac0SJan Kiszka 4608a82ac0SJan Kiszka #if defined(CONFIG_XEN_CTRL_INTERFACE_VERSION) \ 4708a82ac0SJan Kiszka && CONFIG_XEN_CTRL_INTERFACE_VERSION >= 420 4808a82ac0SJan Kiszka msi_supported = true; 4908a82ac0SJan Kiszka #endif 509468e9c4SWei Liu } 519468e9c4SWei Liu 529468e9c4SWei Liu static void xen_apic_set_base(APICCommonState *s, uint64_t val) 539468e9c4SWei Liu { 549468e9c4SWei Liu } 559468e9c4SWei Liu 569468e9c4SWei Liu static void xen_apic_set_tpr(APICCommonState *s, uint8_t val) 579468e9c4SWei Liu { 589468e9c4SWei Liu } 599468e9c4SWei Liu 609468e9c4SWei Liu static uint8_t xen_apic_get_tpr(APICCommonState *s) 619468e9c4SWei Liu { 629468e9c4SWei Liu return 0; 639468e9c4SWei Liu } 649468e9c4SWei Liu 659468e9c4SWei Liu static void xen_apic_vapic_base_update(APICCommonState *s) 669468e9c4SWei Liu { 679468e9c4SWei Liu } 689468e9c4SWei Liu 699468e9c4SWei Liu static void xen_apic_external_nmi(APICCommonState *s) 709468e9c4SWei Liu { 719468e9c4SWei Liu } 729468e9c4SWei Liu 739468e9c4SWei Liu static void xen_apic_class_init(ObjectClass *klass, void *data) 749468e9c4SWei Liu { 759468e9c4SWei Liu APICCommonClass *k = APIC_COMMON_CLASS(klass); 769468e9c4SWei Liu 77*ff6986ceSxiaoqiang zhao k->realize = xen_apic_realize; 789468e9c4SWei Liu k->set_base = xen_apic_set_base; 799468e9c4SWei Liu k->set_tpr = xen_apic_set_tpr; 809468e9c4SWei Liu k->get_tpr = xen_apic_get_tpr; 819468e9c4SWei Liu k->vapic_base_update = xen_apic_vapic_base_update; 829468e9c4SWei Liu k->external_nmi = xen_apic_external_nmi; 839468e9c4SWei Liu } 849468e9c4SWei Liu 858c43a6f0SAndreas Färber static const TypeInfo xen_apic_info = { 869468e9c4SWei Liu .name = "xen-apic", 879468e9c4SWei Liu .parent = TYPE_APIC_COMMON, 889468e9c4SWei Liu .instance_size = sizeof(APICCommonState), 899468e9c4SWei Liu .class_init = xen_apic_class_init, 909468e9c4SWei Liu }; 919468e9c4SWei Liu 929468e9c4SWei Liu static void xen_apic_register_types(void) 939468e9c4SWei Liu { 949468e9c4SWei Liu type_register_static(&xen_apic_info); 959468e9c4SWei Liu } 969468e9c4SWei Liu 979468e9c4SWei Liu type_init(xen_apic_register_types) 98