1*9468e9c4SWei Liu /* 2*9468e9c4SWei Liu * Xen basic APIC support 3*9468e9c4SWei Liu * 4*9468e9c4SWei Liu * Copyright (c) 2012 Citrix 5*9468e9c4SWei Liu * 6*9468e9c4SWei Liu * Authors: 7*9468e9c4SWei Liu * Wei Liu <wei.liu2@citrix.com> 8*9468e9c4SWei Liu * 9*9468e9c4SWei Liu * This work is licensed under the terms of the GNU GPL version 2 or 10*9468e9c4SWei Liu * later. See the COPYING file in the top-level directory. 11*9468e9c4SWei Liu */ 12*9468e9c4SWei Liu #include "hw/apic_internal.h" 13*9468e9c4SWei Liu #include "hw/msi.h" 14*9468e9c4SWei Liu #include "xen.h" 15*9468e9c4SWei Liu 16*9468e9c4SWei Liu static uint64_t xen_apic_mem_read(void *opaque, target_phys_addr_t addr, 17*9468e9c4SWei Liu unsigned size) 18*9468e9c4SWei Liu { 19*9468e9c4SWei Liu return ~(uint64_t)0; 20*9468e9c4SWei Liu } 21*9468e9c4SWei Liu 22*9468e9c4SWei Liu static void xen_apic_mem_write(void *opaque, target_phys_addr_t addr, 23*9468e9c4SWei Liu uint64_t data, unsigned size) 24*9468e9c4SWei Liu { 25*9468e9c4SWei Liu if (size != sizeof(uint32_t)) { 26*9468e9c4SWei Liu fprintf(stderr, "Xen: APIC write data size = %d, invalid\n", size); 27*9468e9c4SWei Liu return; 28*9468e9c4SWei Liu } 29*9468e9c4SWei Liu 30*9468e9c4SWei Liu xen_hvm_inject_msi(addr, data); 31*9468e9c4SWei Liu } 32*9468e9c4SWei Liu 33*9468e9c4SWei Liu static const MemoryRegionOps xen_apic_io_ops = { 34*9468e9c4SWei Liu .read = xen_apic_mem_read, 35*9468e9c4SWei Liu .write = xen_apic_mem_write, 36*9468e9c4SWei Liu .endianness = DEVICE_NATIVE_ENDIAN, 37*9468e9c4SWei Liu }; 38*9468e9c4SWei Liu 39*9468e9c4SWei Liu static void xen_apic_init(APICCommonState *s) 40*9468e9c4SWei Liu { 41*9468e9c4SWei Liu memory_region_init_io(&s->io_memory, &xen_apic_io_ops, s, "xen-apic-msi", 42*9468e9c4SWei Liu MSI_SPACE_SIZE); 43*9468e9c4SWei Liu } 44*9468e9c4SWei Liu 45*9468e9c4SWei Liu static void xen_apic_set_base(APICCommonState *s, uint64_t val) 46*9468e9c4SWei Liu { 47*9468e9c4SWei Liu } 48*9468e9c4SWei Liu 49*9468e9c4SWei Liu static void xen_apic_set_tpr(APICCommonState *s, uint8_t val) 50*9468e9c4SWei Liu { 51*9468e9c4SWei Liu } 52*9468e9c4SWei Liu 53*9468e9c4SWei Liu static uint8_t xen_apic_get_tpr(APICCommonState *s) 54*9468e9c4SWei Liu { 55*9468e9c4SWei Liu return 0; 56*9468e9c4SWei Liu } 57*9468e9c4SWei Liu 58*9468e9c4SWei Liu static void xen_apic_vapic_base_update(APICCommonState *s) 59*9468e9c4SWei Liu { 60*9468e9c4SWei Liu } 61*9468e9c4SWei Liu 62*9468e9c4SWei Liu static void xen_apic_external_nmi(APICCommonState *s) 63*9468e9c4SWei Liu { 64*9468e9c4SWei Liu } 65*9468e9c4SWei Liu 66*9468e9c4SWei Liu static void xen_apic_class_init(ObjectClass *klass, void *data) 67*9468e9c4SWei Liu { 68*9468e9c4SWei Liu APICCommonClass *k = APIC_COMMON_CLASS(klass); 69*9468e9c4SWei Liu 70*9468e9c4SWei Liu k->init = xen_apic_init; 71*9468e9c4SWei Liu k->set_base = xen_apic_set_base; 72*9468e9c4SWei Liu k->set_tpr = xen_apic_set_tpr; 73*9468e9c4SWei Liu k->get_tpr = xen_apic_get_tpr; 74*9468e9c4SWei Liu k->vapic_base_update = xen_apic_vapic_base_update; 75*9468e9c4SWei Liu k->external_nmi = xen_apic_external_nmi; 76*9468e9c4SWei Liu } 77*9468e9c4SWei Liu 78*9468e9c4SWei Liu static TypeInfo xen_apic_info = { 79*9468e9c4SWei Liu .name = "xen-apic", 80*9468e9c4SWei Liu .parent = TYPE_APIC_COMMON, 81*9468e9c4SWei Liu .instance_size = sizeof(APICCommonState), 82*9468e9c4SWei Liu .class_init = xen_apic_class_init, 83*9468e9c4SWei Liu }; 84*9468e9c4SWei Liu 85*9468e9c4SWei Liu static void xen_apic_register_types(void) 86*9468e9c4SWei Liu { 87*9468e9c4SWei Liu type_register_static(&xen_apic_info); 88*9468e9c4SWei Liu } 89*9468e9c4SWei Liu 90*9468e9c4SWei Liu type_init(xen_apic_register_types) 91