| /* |
| * KVM in-kernel APIC support |
| * |
| * Copyright (c) 2011 Siemens AG |
| * |
| * Authors: |
| * Jan Kiszka <jan.kiszka@siemens.com> |
| * |
| * This work is licensed under the terms of the GNU GPL version 2. |
| * See the COPYING file in the top-level directory. |
| */ |
| #include "hw/apic_internal.h" |
| #include "kvm.h" |
| |
| static inline void kvm_apic_set_reg(struct kvm_lapic_state *kapic, |
| int reg_id, uint32_t val) |
| { |
| *((uint32_t *)(kapic->regs + (reg_id << 4))) = val; |
| } |
| |
| static inline uint32_t kvm_apic_get_reg(struct kvm_lapic_state *kapic, |
| int reg_id) |
| { |
| return *((uint32_t *)(kapic->regs + (reg_id << 4))); |
| } |
| |
| void kvm_put_apic_state(DeviceState *d, struct kvm_lapic_state *kapic) |
| { |
| APICCommonState *s = DO_UPCAST(APICCommonState, busdev.qdev, d); |
| int i; |
| |
| memset(kapic, 0, sizeof(kapic)); |
| kvm_apic_set_reg(kapic, 0x2, s->id << 24); |
| kvm_apic_set_reg(kapic, 0x8, s->tpr); |
| kvm_apic_set_reg(kapic, 0xd, s->log_dest << 24); |
| kvm_apic_set_reg(kapic, 0xe, s->dest_mode << 28 | 0x0fffffff); |
| kvm_apic_set_reg(kapic, 0xf, s->spurious_vec); |
| for (i = 0; i < 8; i++) { |
| kvm_apic_set_reg(kapic, 0x10 + i, s->isr[i]); |
| kvm_apic_set_reg(kapic, 0x18 + i, s->tmr[i]); |
| kvm_apic_set_reg(kapic, 0x20 + i, s->irr[i]); |
| } |
| kvm_apic_set_reg(kapic, 0x28, s->esr); |
| kvm_apic_set_reg(kapic, 0x30, s->icr[0]); |
| kvm_apic_set_reg(kapic, 0x31, s->icr[1]); |
| for (i = 0; i < APIC_LVT_NB; i++) { |
| kvm_apic_set_reg(kapic, 0x32 + i, s->lvt[i]); |
| } |
| kvm_apic_set_reg(kapic, 0x38, s->initial_count); |
| kvm_apic_set_reg(kapic, 0x3e, s->divide_conf); |
| } |
| |
| void kvm_get_apic_state(DeviceState *d, struct kvm_lapic_state *kapic) |
| { |
| APICCommonState *s = DO_UPCAST(APICCommonState, busdev.qdev, d); |
| int i, v; |
| |
| s->id = kvm_apic_get_reg(kapic, 0x2) >> 24; |
| s->tpr = kvm_apic_get_reg(kapic, 0x8); |
| s->arb_id = kvm_apic_get_reg(kapic, 0x9); |
| s->log_dest = kvm_apic_get_reg(kapic, 0xd) >> 24; |
| s->dest_mode = kvm_apic_get_reg(kapic, 0xe) >> 28; |
| s->spurious_vec = kvm_apic_get_reg(kapic, 0xf); |
| for (i = 0; i < 8; i++) { |
| s->isr[i] = kvm_apic_get_reg(kapic, 0x10 + i); |
| s->tmr[i] = kvm_apic_get_reg(kapic, 0x18 + i); |
| s->irr[i] = kvm_apic_get_reg(kapic, 0x20 + i); |
| } |
| s->esr = kvm_apic_get_reg(kapic, 0x28); |
| s->icr[0] = kvm_apic_get_reg(kapic, 0x30); |
| s->icr[1] = kvm_apic_get_reg(kapic, 0x31); |
| for (i = 0; i < APIC_LVT_NB; i++) { |
| s->lvt[i] = kvm_apic_get_reg(kapic, 0x32 + i); |
| } |
| s->initial_count = kvm_apic_get_reg(kapic, 0x38); |
| s->divide_conf = kvm_apic_get_reg(kapic, 0x3e); |
| |
| v = (s->divide_conf & 3) | ((s->divide_conf >> 1) & 4); |
| s->count_shift = (v + 1) & 7; |
| |
| s->initial_count_load_time = qemu_get_clock_ns(vm_clock); |
| apic_next_timer(s, s->initial_count_load_time); |
| } |
| |
| static void kvm_apic_set_base(APICCommonState *s, uint64_t val) |
| { |
| s->apicbase = val; |
| } |
| |
| static void kvm_apic_set_tpr(APICCommonState *s, uint8_t val) |
| { |
| s->tpr = (val & 0x0f) << 4; |
| } |
| |
| static uint8_t kvm_apic_get_tpr(APICCommonState *s) |
| { |
| return s->tpr >> 4; |
| } |
| |
| static void kvm_apic_enable_tpr_reporting(APICCommonState *s, bool enable) |
| { |
| struct kvm_tpr_access_ctl ctl = { |
| .enabled = enable |
| }; |
| |
| kvm_vcpu_ioctl(s->cpu_env, KVM_TPR_ACCESS_REPORTING, &ctl); |
| } |
| |
| static void kvm_apic_vapic_base_update(APICCommonState *s) |
| { |
| struct kvm_vapic_addr vapid_addr = { |
| .vapic_addr = s->vapic_paddr, |
| }; |
| int ret; |
| |
| ret = kvm_vcpu_ioctl(s->cpu_env, KVM_SET_VAPIC_ADDR, &vapid_addr); |
| if (ret < 0) { |
| fprintf(stderr, "KVM: setting VAPIC address failed (%s)\n", |
| strerror(-ret)); |
| abort(); |
| } |
| } |
| |
| static void do_inject_external_nmi(void *data) |
| { |
| APICCommonState *s = data; |
| CPUX86State *env = s->cpu_env; |
| uint32_t lvt; |
| int ret; |
| |
| cpu_synchronize_state(env); |
| |
| lvt = s->lvt[APIC_LVT_LINT1]; |
| if (!(lvt & APIC_LVT_MASKED) && ((lvt >> 8) & 7) == APIC_DM_NMI) { |
| ret = kvm_vcpu_ioctl(env, KVM_NMI); |
| if (ret < 0) { |
| fprintf(stderr, "KVM: injection failed, NMI lost (%s)\n", |
| strerror(-ret)); |
| } |
| } |
| } |
| |
| static void kvm_apic_external_nmi(APICCommonState *s) |
| { |
| run_on_cpu(s->cpu_env, do_inject_external_nmi, s); |
| } |
| |
| static void kvm_apic_init(APICCommonState *s) |
| { |
| memory_region_init_reservation(&s->io_memory, "kvm-apic-msi", |
| MSI_SPACE_SIZE); |
| } |
| |
| static void kvm_apic_class_init(ObjectClass *klass, void *data) |
| { |
| APICCommonClass *k = APIC_COMMON_CLASS(klass); |
| |
| k->init = kvm_apic_init; |
| k->set_base = kvm_apic_set_base; |
| k->set_tpr = kvm_apic_set_tpr; |
| k->get_tpr = kvm_apic_get_tpr; |
| k->enable_tpr_reporting = kvm_apic_enable_tpr_reporting; |
| k->vapic_base_update = kvm_apic_vapic_base_update; |
| k->external_nmi = kvm_apic_external_nmi; |
| } |
| |
| static TypeInfo kvm_apic_info = { |
| .name = "kvm-apic", |
| .parent = TYPE_APIC_COMMON, |
| .instance_size = sizeof(APICCommonState), |
| .class_init = kvm_apic_class_init, |
| }; |
| |
| static void kvm_apic_register_types(void) |
| { |
| type_register_static(&kvm_apic_info); |
| } |
| |
| type_init(kvm_apic_register_types) |