1fcf5ef2aSThomas Huth /* 2fcf5ef2aSThomas Huth * ARM implementation of KVM hooks 3fcf5ef2aSThomas Huth * 4fcf5ef2aSThomas Huth * Copyright Christoffer Dall 2009-2010 5fcf5ef2aSThomas Huth * 6fcf5ef2aSThomas Huth * This work is licensed under the terms of the GNU GPL, version 2 or later. 7fcf5ef2aSThomas Huth * See the COPYING file in the top-level directory. 8fcf5ef2aSThomas Huth * 9fcf5ef2aSThomas Huth */ 10fcf5ef2aSThomas Huth 11fcf5ef2aSThomas Huth #include "qemu/osdep.h" 12fcf5ef2aSThomas Huth #include <sys/ioctl.h> 13fcf5ef2aSThomas Huth 14fcf5ef2aSThomas Huth #include <linux/kvm.h> 15fcf5ef2aSThomas Huth 16fcf5ef2aSThomas Huth #include "qemu-common.h" 17fcf5ef2aSThomas Huth #include "qemu/timer.h" 18fcf5ef2aSThomas Huth #include "qemu/error-report.h" 19db725815SMarkus Armbruster #include "qemu/main-loop.h" 20fcf5ef2aSThomas Huth #include "sysemu/sysemu.h" 21fcf5ef2aSThomas Huth #include "sysemu/kvm.h" 22a27382e2SEric Auger #include "sysemu/kvm_int.h" 23fcf5ef2aSThomas Huth #include "kvm_arm.h" 24fcf5ef2aSThomas Huth #include "cpu.h" 25b05c81d2SEric Auger #include "trace.h" 26fcf5ef2aSThomas Huth #include "internals.h" 27b05c81d2SEric Auger #include "hw/pci/pci.h" 28fcf5ef2aSThomas Huth #include "exec/memattrs.h" 29fcf5ef2aSThomas Huth #include "exec/address-spaces.h" 30fcf5ef2aSThomas Huth #include "hw/boards.h" 3164552b6bSMarkus Armbruster #include "hw/irq.h" 32fcf5ef2aSThomas Huth #include "qemu/log.h" 33fcf5ef2aSThomas Huth 34fcf5ef2aSThomas Huth const KVMCapabilityInfo kvm_arch_required_capabilities[] = { 35fcf5ef2aSThomas Huth KVM_CAP_LAST_INFO 36fcf5ef2aSThomas Huth }; 37fcf5ef2aSThomas Huth 38fcf5ef2aSThomas Huth static bool cap_has_mp_state; 39202ccb6bSDongjiu Geng static bool cap_has_inject_serror_esr; 40fcf5ef2aSThomas Huth 41c4487d76SPeter Maydell static ARMHostCPUFeatures arm_host_cpu_features; 42c4487d76SPeter Maydell 43fcf5ef2aSThomas Huth int kvm_arm_vcpu_init(CPUState *cs) 44fcf5ef2aSThomas Huth { 45fcf5ef2aSThomas Huth ARMCPU *cpu = ARM_CPU(cs); 46fcf5ef2aSThomas Huth struct kvm_vcpu_init init; 47fcf5ef2aSThomas Huth 48fcf5ef2aSThomas Huth init.target = cpu->kvm_target; 49fcf5ef2aSThomas Huth memcpy(init.features, cpu->kvm_init_features, sizeof(init.features)); 50fcf5ef2aSThomas Huth 51fcf5ef2aSThomas Huth return kvm_vcpu_ioctl(cs, KVM_ARM_VCPU_INIT, &init); 52fcf5ef2aSThomas Huth } 53fcf5ef2aSThomas Huth 54202ccb6bSDongjiu Geng void kvm_arm_init_serror_injection(CPUState *cs) 55202ccb6bSDongjiu Geng { 56202ccb6bSDongjiu Geng cap_has_inject_serror_esr = kvm_check_extension(cs->kvm_state, 57202ccb6bSDongjiu Geng KVM_CAP_ARM_INJECT_SERROR_ESR); 58202ccb6bSDongjiu Geng } 59202ccb6bSDongjiu Geng 60fcf5ef2aSThomas Huth bool kvm_arm_create_scratch_host_vcpu(const uint32_t *cpus_to_try, 61fcf5ef2aSThomas Huth int *fdarray, 62fcf5ef2aSThomas Huth struct kvm_vcpu_init *init) 63fcf5ef2aSThomas Huth { 64fcf5ef2aSThomas Huth int ret, kvmfd = -1, vmfd = -1, cpufd = -1; 65fcf5ef2aSThomas Huth 66fcf5ef2aSThomas Huth kvmfd = qemu_open("/dev/kvm", O_RDWR); 67fcf5ef2aSThomas Huth if (kvmfd < 0) { 68fcf5ef2aSThomas Huth goto err; 69fcf5ef2aSThomas Huth } 70fcf5ef2aSThomas Huth vmfd = ioctl(kvmfd, KVM_CREATE_VM, 0); 71fcf5ef2aSThomas Huth if (vmfd < 0) { 72fcf5ef2aSThomas Huth goto err; 73fcf5ef2aSThomas Huth } 74fcf5ef2aSThomas Huth cpufd = ioctl(vmfd, KVM_CREATE_VCPU, 0); 75fcf5ef2aSThomas Huth if (cpufd < 0) { 76fcf5ef2aSThomas Huth goto err; 77fcf5ef2aSThomas Huth } 78fcf5ef2aSThomas Huth 79fcf5ef2aSThomas Huth if (!init) { 80fcf5ef2aSThomas Huth /* Caller doesn't want the VCPU to be initialized, so skip it */ 81fcf5ef2aSThomas Huth goto finish; 82fcf5ef2aSThomas Huth } 83fcf5ef2aSThomas Huth 84fcf5ef2aSThomas Huth ret = ioctl(vmfd, KVM_ARM_PREFERRED_TARGET, init); 85fcf5ef2aSThomas Huth if (ret >= 0) { 86fcf5ef2aSThomas Huth ret = ioctl(cpufd, KVM_ARM_VCPU_INIT, init); 87fcf5ef2aSThomas Huth if (ret < 0) { 88fcf5ef2aSThomas Huth goto err; 89fcf5ef2aSThomas Huth } 90fcf5ef2aSThomas Huth } else if (cpus_to_try) { 91fcf5ef2aSThomas Huth /* Old kernel which doesn't know about the 92fcf5ef2aSThomas Huth * PREFERRED_TARGET ioctl: we know it will only support 93fcf5ef2aSThomas Huth * creating one kind of guest CPU which is its preferred 94fcf5ef2aSThomas Huth * CPU type. 95fcf5ef2aSThomas Huth */ 96fcf5ef2aSThomas Huth while (*cpus_to_try != QEMU_KVM_ARM_TARGET_NONE) { 97fcf5ef2aSThomas Huth init->target = *cpus_to_try++; 98fcf5ef2aSThomas Huth memset(init->features, 0, sizeof(init->features)); 99fcf5ef2aSThomas Huth ret = ioctl(cpufd, KVM_ARM_VCPU_INIT, init); 100fcf5ef2aSThomas Huth if (ret >= 0) { 101fcf5ef2aSThomas Huth break; 102fcf5ef2aSThomas Huth } 103fcf5ef2aSThomas Huth } 104fcf5ef2aSThomas Huth if (ret < 0) { 105fcf5ef2aSThomas Huth goto err; 106fcf5ef2aSThomas Huth } 107fcf5ef2aSThomas Huth } else { 108fcf5ef2aSThomas Huth /* Treat a NULL cpus_to_try argument the same as an empty 109fcf5ef2aSThomas Huth * list, which means we will fail the call since this must 110fcf5ef2aSThomas Huth * be an old kernel which doesn't support PREFERRED_TARGET. 111fcf5ef2aSThomas Huth */ 112fcf5ef2aSThomas Huth goto err; 113fcf5ef2aSThomas Huth } 114fcf5ef2aSThomas Huth 115fcf5ef2aSThomas Huth finish: 116fcf5ef2aSThomas Huth fdarray[0] = kvmfd; 117fcf5ef2aSThomas Huth fdarray[1] = vmfd; 118fcf5ef2aSThomas Huth fdarray[2] = cpufd; 119fcf5ef2aSThomas Huth 120fcf5ef2aSThomas Huth return true; 121fcf5ef2aSThomas Huth 122fcf5ef2aSThomas Huth err: 123fcf5ef2aSThomas Huth if (cpufd >= 0) { 124fcf5ef2aSThomas Huth close(cpufd); 125fcf5ef2aSThomas Huth } 126fcf5ef2aSThomas Huth if (vmfd >= 0) { 127fcf5ef2aSThomas Huth close(vmfd); 128fcf5ef2aSThomas Huth } 129fcf5ef2aSThomas Huth if (kvmfd >= 0) { 130fcf5ef2aSThomas Huth close(kvmfd); 131fcf5ef2aSThomas Huth } 132fcf5ef2aSThomas Huth 133fcf5ef2aSThomas Huth return false; 134fcf5ef2aSThomas Huth } 135fcf5ef2aSThomas Huth 136fcf5ef2aSThomas Huth void kvm_arm_destroy_scratch_host_vcpu(int *fdarray) 137fcf5ef2aSThomas Huth { 138fcf5ef2aSThomas Huth int i; 139fcf5ef2aSThomas Huth 140fcf5ef2aSThomas Huth for (i = 2; i >= 0; i--) { 141fcf5ef2aSThomas Huth close(fdarray[i]); 142fcf5ef2aSThomas Huth } 143fcf5ef2aSThomas Huth } 144fcf5ef2aSThomas Huth 145c4487d76SPeter Maydell void kvm_arm_set_cpu_features_from_host(ARMCPU *cpu) 146fcf5ef2aSThomas Huth { 147c4487d76SPeter Maydell CPUARMState *env = &cpu->env; 148fcf5ef2aSThomas Huth 149c4487d76SPeter Maydell if (!arm_host_cpu_features.dtb_compatible) { 150c4487d76SPeter Maydell if (!kvm_enabled() || 151c4487d76SPeter Maydell !kvm_arm_get_host_cpu_features(&arm_host_cpu_features)) { 152c4487d76SPeter Maydell /* We can't report this error yet, so flag that we need to 153c4487d76SPeter Maydell * in arm_cpu_realizefn(). 154fcf5ef2aSThomas Huth */ 155c4487d76SPeter Maydell cpu->kvm_target = QEMU_KVM_ARM_TARGET_NONE; 156c4487d76SPeter Maydell cpu->host_cpu_probe_failed = true; 157c4487d76SPeter Maydell return; 158fcf5ef2aSThomas Huth } 159fcf5ef2aSThomas Huth } 160fcf5ef2aSThomas Huth 161c4487d76SPeter Maydell cpu->kvm_target = arm_host_cpu_features.target; 162c4487d76SPeter Maydell cpu->dtb_compatible = arm_host_cpu_features.dtb_compatible; 1634674097cSRichard Henderson cpu->isar = arm_host_cpu_features.isar; 164c4487d76SPeter Maydell env->features = arm_host_cpu_features.features; 165c4487d76SPeter Maydell } 166c4487d76SPeter Maydell 167ae502508SAndrew Jones bool kvm_arm_pmu_supported(CPUState *cpu) 168ae502508SAndrew Jones { 169ae502508SAndrew Jones KVMState *s = KVM_STATE(current_machine->accelerator); 170ae502508SAndrew Jones 171ae502508SAndrew Jones return kvm_check_extension(s, KVM_CAP_ARM_PMU_V3); 172ae502508SAndrew Jones } 173ae502508SAndrew Jones 174a27382e2SEric Auger int kvm_arm_get_max_vm_ipa_size(MachineState *ms) 175a27382e2SEric Auger { 176a27382e2SEric Auger KVMState *s = KVM_STATE(ms->accelerator); 177a27382e2SEric Auger int ret; 178a27382e2SEric Auger 179a27382e2SEric Auger ret = kvm_check_extension(s, KVM_CAP_ARM_VM_IPA_SIZE); 180a27382e2SEric Auger return ret > 0 ? ret : 40; 181a27382e2SEric Auger } 182a27382e2SEric Auger 183fcf5ef2aSThomas Huth int kvm_arch_init(MachineState *ms, KVMState *s) 184fcf5ef2aSThomas Huth { 185*fff9f555SEric Auger int ret = 0; 186fcf5ef2aSThomas Huth /* For ARM interrupt delivery is always asynchronous, 187fcf5ef2aSThomas Huth * whether we are using an in-kernel VGIC or not. 188fcf5ef2aSThomas Huth */ 189fcf5ef2aSThomas Huth kvm_async_interrupts_allowed = true; 190fcf5ef2aSThomas Huth 1915d721b78SAlexander Graf /* 1925d721b78SAlexander Graf * PSCI wakes up secondary cores, so we always need to 1935d721b78SAlexander Graf * have vCPUs waiting in kernel space 1945d721b78SAlexander Graf */ 1955d721b78SAlexander Graf kvm_halt_in_kernel_allowed = true; 1965d721b78SAlexander Graf 197fcf5ef2aSThomas Huth cap_has_mp_state = kvm_check_extension(s, KVM_CAP_MP_STATE); 198fcf5ef2aSThomas Huth 199*fff9f555SEric Auger if (ms->smp.cpus > 256 && 200*fff9f555SEric Auger !kvm_check_extension(s, KVM_CAP_ARM_IRQ_LINE_LAYOUT_2)) { 201*fff9f555SEric Auger error_report("Using more than 256 vcpus requires a host kernel " 202*fff9f555SEric Auger "with KVM_CAP_ARM_IRQ_LINE_LAYOUT_2"); 203*fff9f555SEric Auger ret = -EINVAL; 204*fff9f555SEric Auger } 205*fff9f555SEric Auger 206*fff9f555SEric Auger return ret; 207fcf5ef2aSThomas Huth } 208fcf5ef2aSThomas Huth 209fcf5ef2aSThomas Huth unsigned long kvm_arch_vcpu_id(CPUState *cpu) 210fcf5ef2aSThomas Huth { 211fcf5ef2aSThomas Huth return cpu->cpu_index; 212fcf5ef2aSThomas Huth } 213fcf5ef2aSThomas Huth 214fcf5ef2aSThomas Huth /* We track all the KVM devices which need their memory addresses 215fcf5ef2aSThomas Huth * passing to the kernel in a list of these structures. 216fcf5ef2aSThomas Huth * When board init is complete we run through the list and 217fcf5ef2aSThomas Huth * tell the kernel the base addresses of the memory regions. 218fcf5ef2aSThomas Huth * We use a MemoryListener to track mapping and unmapping of 219fcf5ef2aSThomas Huth * the regions during board creation, so the board models don't 220fcf5ef2aSThomas Huth * need to do anything special for the KVM case. 22119d1bd0bSEric Auger * 22219d1bd0bSEric Auger * Sometimes the address must be OR'ed with some other fields 22319d1bd0bSEric Auger * (for example for KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION). 22419d1bd0bSEric Auger * @kda_addr_ormask aims at storing the value of those fields. 225fcf5ef2aSThomas Huth */ 226fcf5ef2aSThomas Huth typedef struct KVMDevice { 227fcf5ef2aSThomas Huth struct kvm_arm_device_addr kda; 228fcf5ef2aSThomas Huth struct kvm_device_attr kdattr; 22919d1bd0bSEric Auger uint64_t kda_addr_ormask; 230fcf5ef2aSThomas Huth MemoryRegion *mr; 231fcf5ef2aSThomas Huth QSLIST_ENTRY(KVMDevice) entries; 232fcf5ef2aSThomas Huth int dev_fd; 233fcf5ef2aSThomas Huth } KVMDevice; 234fcf5ef2aSThomas Huth 235b58deb34SPaolo Bonzini static QSLIST_HEAD(, KVMDevice) kvm_devices_head; 236fcf5ef2aSThomas Huth 237fcf5ef2aSThomas Huth static void kvm_arm_devlistener_add(MemoryListener *listener, 238fcf5ef2aSThomas Huth MemoryRegionSection *section) 239fcf5ef2aSThomas Huth { 240fcf5ef2aSThomas Huth KVMDevice *kd; 241fcf5ef2aSThomas Huth 242fcf5ef2aSThomas Huth QSLIST_FOREACH(kd, &kvm_devices_head, entries) { 243fcf5ef2aSThomas Huth if (section->mr == kd->mr) { 244fcf5ef2aSThomas Huth kd->kda.addr = section->offset_within_address_space; 245fcf5ef2aSThomas Huth } 246fcf5ef2aSThomas Huth } 247fcf5ef2aSThomas Huth } 248fcf5ef2aSThomas Huth 249fcf5ef2aSThomas Huth static void kvm_arm_devlistener_del(MemoryListener *listener, 250fcf5ef2aSThomas Huth MemoryRegionSection *section) 251fcf5ef2aSThomas Huth { 252fcf5ef2aSThomas Huth KVMDevice *kd; 253fcf5ef2aSThomas Huth 254fcf5ef2aSThomas Huth QSLIST_FOREACH(kd, &kvm_devices_head, entries) { 255fcf5ef2aSThomas Huth if (section->mr == kd->mr) { 256fcf5ef2aSThomas Huth kd->kda.addr = -1; 257fcf5ef2aSThomas Huth } 258fcf5ef2aSThomas Huth } 259fcf5ef2aSThomas Huth } 260fcf5ef2aSThomas Huth 261fcf5ef2aSThomas Huth static MemoryListener devlistener = { 262fcf5ef2aSThomas Huth .region_add = kvm_arm_devlistener_add, 263fcf5ef2aSThomas Huth .region_del = kvm_arm_devlistener_del, 264fcf5ef2aSThomas Huth }; 265fcf5ef2aSThomas Huth 266fcf5ef2aSThomas Huth static void kvm_arm_set_device_addr(KVMDevice *kd) 267fcf5ef2aSThomas Huth { 268fcf5ef2aSThomas Huth struct kvm_device_attr *attr = &kd->kdattr; 269fcf5ef2aSThomas Huth int ret; 270fcf5ef2aSThomas Huth 271fcf5ef2aSThomas Huth /* If the device control API is available and we have a device fd on the 272fcf5ef2aSThomas Huth * KVMDevice struct, let's use the newer API 273fcf5ef2aSThomas Huth */ 274fcf5ef2aSThomas Huth if (kd->dev_fd >= 0) { 275fcf5ef2aSThomas Huth uint64_t addr = kd->kda.addr; 27619d1bd0bSEric Auger 27719d1bd0bSEric Auger addr |= kd->kda_addr_ormask; 278fcf5ef2aSThomas Huth attr->addr = (uintptr_t)&addr; 279fcf5ef2aSThomas Huth ret = kvm_device_ioctl(kd->dev_fd, KVM_SET_DEVICE_ATTR, attr); 280fcf5ef2aSThomas Huth } else { 281fcf5ef2aSThomas Huth ret = kvm_vm_ioctl(kvm_state, KVM_ARM_SET_DEVICE_ADDR, &kd->kda); 282fcf5ef2aSThomas Huth } 283fcf5ef2aSThomas Huth 284fcf5ef2aSThomas Huth if (ret < 0) { 285fcf5ef2aSThomas Huth fprintf(stderr, "Failed to set device address: %s\n", 286fcf5ef2aSThomas Huth strerror(-ret)); 287fcf5ef2aSThomas Huth abort(); 288fcf5ef2aSThomas Huth } 289fcf5ef2aSThomas Huth } 290fcf5ef2aSThomas Huth 291fcf5ef2aSThomas Huth static void kvm_arm_machine_init_done(Notifier *notifier, void *data) 292fcf5ef2aSThomas Huth { 293fcf5ef2aSThomas Huth KVMDevice *kd, *tkd; 294fcf5ef2aSThomas Huth 295fcf5ef2aSThomas Huth QSLIST_FOREACH_SAFE(kd, &kvm_devices_head, entries, tkd) { 296fcf5ef2aSThomas Huth if (kd->kda.addr != -1) { 297fcf5ef2aSThomas Huth kvm_arm_set_device_addr(kd); 298fcf5ef2aSThomas Huth } 299fcf5ef2aSThomas Huth memory_region_unref(kd->mr); 3005ff9aaabSZheng Xiang QSLIST_REMOVE_HEAD(&kvm_devices_head, entries); 301fcf5ef2aSThomas Huth g_free(kd); 302fcf5ef2aSThomas Huth } 3030bbe4354SPeter Xu memory_listener_unregister(&devlistener); 304fcf5ef2aSThomas Huth } 305fcf5ef2aSThomas Huth 306fcf5ef2aSThomas Huth static Notifier notify = { 307fcf5ef2aSThomas Huth .notify = kvm_arm_machine_init_done, 308fcf5ef2aSThomas Huth }; 309fcf5ef2aSThomas Huth 310fcf5ef2aSThomas Huth void kvm_arm_register_device(MemoryRegion *mr, uint64_t devid, uint64_t group, 31119d1bd0bSEric Auger uint64_t attr, int dev_fd, uint64_t addr_ormask) 312fcf5ef2aSThomas Huth { 313fcf5ef2aSThomas Huth KVMDevice *kd; 314fcf5ef2aSThomas Huth 315fcf5ef2aSThomas Huth if (!kvm_irqchip_in_kernel()) { 316fcf5ef2aSThomas Huth return; 317fcf5ef2aSThomas Huth } 318fcf5ef2aSThomas Huth 319fcf5ef2aSThomas Huth if (QSLIST_EMPTY(&kvm_devices_head)) { 320fcf5ef2aSThomas Huth memory_listener_register(&devlistener, &address_space_memory); 321fcf5ef2aSThomas Huth qemu_add_machine_init_done_notifier(¬ify); 322fcf5ef2aSThomas Huth } 323fcf5ef2aSThomas Huth kd = g_new0(KVMDevice, 1); 324fcf5ef2aSThomas Huth kd->mr = mr; 325fcf5ef2aSThomas Huth kd->kda.id = devid; 326fcf5ef2aSThomas Huth kd->kda.addr = -1; 327fcf5ef2aSThomas Huth kd->kdattr.flags = 0; 328fcf5ef2aSThomas Huth kd->kdattr.group = group; 329fcf5ef2aSThomas Huth kd->kdattr.attr = attr; 330fcf5ef2aSThomas Huth kd->dev_fd = dev_fd; 33119d1bd0bSEric Auger kd->kda_addr_ormask = addr_ormask; 332fcf5ef2aSThomas Huth QSLIST_INSERT_HEAD(&kvm_devices_head, kd, entries); 333fcf5ef2aSThomas Huth memory_region_ref(kd->mr); 334fcf5ef2aSThomas Huth } 335fcf5ef2aSThomas Huth 336fcf5ef2aSThomas Huth static int compare_u64(const void *a, const void *b) 337fcf5ef2aSThomas Huth { 338fcf5ef2aSThomas Huth if (*(uint64_t *)a > *(uint64_t *)b) { 339fcf5ef2aSThomas Huth return 1; 340fcf5ef2aSThomas Huth } 341fcf5ef2aSThomas Huth if (*(uint64_t *)a < *(uint64_t *)b) { 342fcf5ef2aSThomas Huth return -1; 343fcf5ef2aSThomas Huth } 344fcf5ef2aSThomas Huth return 0; 345fcf5ef2aSThomas Huth } 346fcf5ef2aSThomas Huth 347c8a44709SDongjiu Geng /* Initialize the ARMCPU cpreg list according to the kernel's 348fcf5ef2aSThomas Huth * definition of what CPU registers it knows about (and throw away 349fcf5ef2aSThomas Huth * the previous TCG-created cpreg list). 350fcf5ef2aSThomas Huth */ 351fcf5ef2aSThomas Huth int kvm_arm_init_cpreg_list(ARMCPU *cpu) 352fcf5ef2aSThomas Huth { 353fcf5ef2aSThomas Huth struct kvm_reg_list rl; 354fcf5ef2aSThomas Huth struct kvm_reg_list *rlp; 355fcf5ef2aSThomas Huth int i, ret, arraylen; 356fcf5ef2aSThomas Huth CPUState *cs = CPU(cpu); 357fcf5ef2aSThomas Huth 358fcf5ef2aSThomas Huth rl.n = 0; 359fcf5ef2aSThomas Huth ret = kvm_vcpu_ioctl(cs, KVM_GET_REG_LIST, &rl); 360fcf5ef2aSThomas Huth if (ret != -E2BIG) { 361fcf5ef2aSThomas Huth return ret; 362fcf5ef2aSThomas Huth } 363fcf5ef2aSThomas Huth rlp = g_malloc(sizeof(struct kvm_reg_list) + rl.n * sizeof(uint64_t)); 364fcf5ef2aSThomas Huth rlp->n = rl.n; 365fcf5ef2aSThomas Huth ret = kvm_vcpu_ioctl(cs, KVM_GET_REG_LIST, rlp); 366fcf5ef2aSThomas Huth if (ret) { 367fcf5ef2aSThomas Huth goto out; 368fcf5ef2aSThomas Huth } 369fcf5ef2aSThomas Huth /* Sort the list we get back from the kernel, since cpreg_tuples 370fcf5ef2aSThomas Huth * must be in strictly ascending order. 371fcf5ef2aSThomas Huth */ 372fcf5ef2aSThomas Huth qsort(&rlp->reg, rlp->n, sizeof(rlp->reg[0]), compare_u64); 373fcf5ef2aSThomas Huth 374fcf5ef2aSThomas Huth for (i = 0, arraylen = 0; i < rlp->n; i++) { 375fcf5ef2aSThomas Huth if (!kvm_arm_reg_syncs_via_cpreg_list(rlp->reg[i])) { 376fcf5ef2aSThomas Huth continue; 377fcf5ef2aSThomas Huth } 378fcf5ef2aSThomas Huth switch (rlp->reg[i] & KVM_REG_SIZE_MASK) { 379fcf5ef2aSThomas Huth case KVM_REG_SIZE_U32: 380fcf5ef2aSThomas Huth case KVM_REG_SIZE_U64: 381fcf5ef2aSThomas Huth break; 382fcf5ef2aSThomas Huth default: 383fcf5ef2aSThomas Huth fprintf(stderr, "Can't handle size of register in kernel list\n"); 384fcf5ef2aSThomas Huth ret = -EINVAL; 385fcf5ef2aSThomas Huth goto out; 386fcf5ef2aSThomas Huth } 387fcf5ef2aSThomas Huth 388fcf5ef2aSThomas Huth arraylen++; 389fcf5ef2aSThomas Huth } 390fcf5ef2aSThomas Huth 391fcf5ef2aSThomas Huth cpu->cpreg_indexes = g_renew(uint64_t, cpu->cpreg_indexes, arraylen); 392fcf5ef2aSThomas Huth cpu->cpreg_values = g_renew(uint64_t, cpu->cpreg_values, arraylen); 393fcf5ef2aSThomas Huth cpu->cpreg_vmstate_indexes = g_renew(uint64_t, cpu->cpreg_vmstate_indexes, 394fcf5ef2aSThomas Huth arraylen); 395fcf5ef2aSThomas Huth cpu->cpreg_vmstate_values = g_renew(uint64_t, cpu->cpreg_vmstate_values, 396fcf5ef2aSThomas Huth arraylen); 397fcf5ef2aSThomas Huth cpu->cpreg_array_len = arraylen; 398fcf5ef2aSThomas Huth cpu->cpreg_vmstate_array_len = arraylen; 399fcf5ef2aSThomas Huth 400fcf5ef2aSThomas Huth for (i = 0, arraylen = 0; i < rlp->n; i++) { 401fcf5ef2aSThomas Huth uint64_t regidx = rlp->reg[i]; 402fcf5ef2aSThomas Huth if (!kvm_arm_reg_syncs_via_cpreg_list(regidx)) { 403fcf5ef2aSThomas Huth continue; 404fcf5ef2aSThomas Huth } 405fcf5ef2aSThomas Huth cpu->cpreg_indexes[arraylen] = regidx; 406fcf5ef2aSThomas Huth arraylen++; 407fcf5ef2aSThomas Huth } 408fcf5ef2aSThomas Huth assert(cpu->cpreg_array_len == arraylen); 409fcf5ef2aSThomas Huth 410fcf5ef2aSThomas Huth if (!write_kvmstate_to_list(cpu)) { 411fcf5ef2aSThomas Huth /* Shouldn't happen unless kernel is inconsistent about 412fcf5ef2aSThomas Huth * what registers exist. 413fcf5ef2aSThomas Huth */ 414fcf5ef2aSThomas Huth fprintf(stderr, "Initial read of kernel register state failed\n"); 415fcf5ef2aSThomas Huth ret = -EINVAL; 416fcf5ef2aSThomas Huth goto out; 417fcf5ef2aSThomas Huth } 418fcf5ef2aSThomas Huth 419fcf5ef2aSThomas Huth out: 420fcf5ef2aSThomas Huth g_free(rlp); 421fcf5ef2aSThomas Huth return ret; 422fcf5ef2aSThomas Huth } 423fcf5ef2aSThomas Huth 424fcf5ef2aSThomas Huth bool write_kvmstate_to_list(ARMCPU *cpu) 425fcf5ef2aSThomas Huth { 426fcf5ef2aSThomas Huth CPUState *cs = CPU(cpu); 427fcf5ef2aSThomas Huth int i; 428fcf5ef2aSThomas Huth bool ok = true; 429fcf5ef2aSThomas Huth 430fcf5ef2aSThomas Huth for (i = 0; i < cpu->cpreg_array_len; i++) { 431fcf5ef2aSThomas Huth struct kvm_one_reg r; 432fcf5ef2aSThomas Huth uint64_t regidx = cpu->cpreg_indexes[i]; 433fcf5ef2aSThomas Huth uint32_t v32; 434fcf5ef2aSThomas Huth int ret; 435fcf5ef2aSThomas Huth 436fcf5ef2aSThomas Huth r.id = regidx; 437fcf5ef2aSThomas Huth 438fcf5ef2aSThomas Huth switch (regidx & KVM_REG_SIZE_MASK) { 439fcf5ef2aSThomas Huth case KVM_REG_SIZE_U32: 440fcf5ef2aSThomas Huth r.addr = (uintptr_t)&v32; 441fcf5ef2aSThomas Huth ret = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &r); 442fcf5ef2aSThomas Huth if (!ret) { 443fcf5ef2aSThomas Huth cpu->cpreg_values[i] = v32; 444fcf5ef2aSThomas Huth } 445fcf5ef2aSThomas Huth break; 446fcf5ef2aSThomas Huth case KVM_REG_SIZE_U64: 447fcf5ef2aSThomas Huth r.addr = (uintptr_t)(cpu->cpreg_values + i); 448fcf5ef2aSThomas Huth ret = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &r); 449fcf5ef2aSThomas Huth break; 450fcf5ef2aSThomas Huth default: 451fcf5ef2aSThomas Huth abort(); 452fcf5ef2aSThomas Huth } 453fcf5ef2aSThomas Huth if (ret) { 454fcf5ef2aSThomas Huth ok = false; 455fcf5ef2aSThomas Huth } 456fcf5ef2aSThomas Huth } 457fcf5ef2aSThomas Huth return ok; 458fcf5ef2aSThomas Huth } 459fcf5ef2aSThomas Huth 460fcf5ef2aSThomas Huth bool write_list_to_kvmstate(ARMCPU *cpu, int level) 461fcf5ef2aSThomas Huth { 462fcf5ef2aSThomas Huth CPUState *cs = CPU(cpu); 463fcf5ef2aSThomas Huth int i; 464fcf5ef2aSThomas Huth bool ok = true; 465fcf5ef2aSThomas Huth 466fcf5ef2aSThomas Huth for (i = 0; i < cpu->cpreg_array_len; i++) { 467fcf5ef2aSThomas Huth struct kvm_one_reg r; 468fcf5ef2aSThomas Huth uint64_t regidx = cpu->cpreg_indexes[i]; 469fcf5ef2aSThomas Huth uint32_t v32; 470fcf5ef2aSThomas Huth int ret; 471fcf5ef2aSThomas Huth 472fcf5ef2aSThomas Huth if (kvm_arm_cpreg_level(regidx) > level) { 473fcf5ef2aSThomas Huth continue; 474fcf5ef2aSThomas Huth } 475fcf5ef2aSThomas Huth 476fcf5ef2aSThomas Huth r.id = regidx; 477fcf5ef2aSThomas Huth switch (regidx & KVM_REG_SIZE_MASK) { 478fcf5ef2aSThomas Huth case KVM_REG_SIZE_U32: 479fcf5ef2aSThomas Huth v32 = cpu->cpreg_values[i]; 480fcf5ef2aSThomas Huth r.addr = (uintptr_t)&v32; 481fcf5ef2aSThomas Huth break; 482fcf5ef2aSThomas Huth case KVM_REG_SIZE_U64: 483fcf5ef2aSThomas Huth r.addr = (uintptr_t)(cpu->cpreg_values + i); 484fcf5ef2aSThomas Huth break; 485fcf5ef2aSThomas Huth default: 486fcf5ef2aSThomas Huth abort(); 487fcf5ef2aSThomas Huth } 488fcf5ef2aSThomas Huth ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &r); 489fcf5ef2aSThomas Huth if (ret) { 490fcf5ef2aSThomas Huth /* We might fail for "unknown register" and also for 491fcf5ef2aSThomas Huth * "you tried to set a register which is constant with 492fcf5ef2aSThomas Huth * a different value from what it actually contains". 493fcf5ef2aSThomas Huth */ 494fcf5ef2aSThomas Huth ok = false; 495fcf5ef2aSThomas Huth } 496fcf5ef2aSThomas Huth } 497fcf5ef2aSThomas Huth return ok; 498fcf5ef2aSThomas Huth } 499fcf5ef2aSThomas Huth 500fcf5ef2aSThomas Huth void kvm_arm_reset_vcpu(ARMCPU *cpu) 501fcf5ef2aSThomas Huth { 502fcf5ef2aSThomas Huth int ret; 503fcf5ef2aSThomas Huth 504fcf5ef2aSThomas Huth /* Re-init VCPU so that all registers are set to 505fcf5ef2aSThomas Huth * their respective reset values. 506fcf5ef2aSThomas Huth */ 507fcf5ef2aSThomas Huth ret = kvm_arm_vcpu_init(CPU(cpu)); 508fcf5ef2aSThomas Huth if (ret < 0) { 509fcf5ef2aSThomas Huth fprintf(stderr, "kvm_arm_vcpu_init failed: %s\n", strerror(-ret)); 510fcf5ef2aSThomas Huth abort(); 511fcf5ef2aSThomas Huth } 512fcf5ef2aSThomas Huth if (!write_kvmstate_to_list(cpu)) { 513fcf5ef2aSThomas Huth fprintf(stderr, "write_kvmstate_to_list failed\n"); 514fcf5ef2aSThomas Huth abort(); 515fcf5ef2aSThomas Huth } 516b698e4eeSPeter Maydell /* 517b698e4eeSPeter Maydell * Sync the reset values also into the CPUState. This is necessary 518b698e4eeSPeter Maydell * because the next thing we do will be a kvm_arch_put_registers() 519b698e4eeSPeter Maydell * which will update the list values from the CPUState before copying 520b698e4eeSPeter Maydell * the list values back to KVM. It's OK to ignore failure returns here 521b698e4eeSPeter Maydell * for the same reason we do so in kvm_arch_get_registers(). 522b698e4eeSPeter Maydell */ 523b698e4eeSPeter Maydell write_list_to_cpustate(cpu); 524fcf5ef2aSThomas Huth } 525fcf5ef2aSThomas Huth 526fcf5ef2aSThomas Huth /* 527fcf5ef2aSThomas Huth * Update KVM's MP_STATE based on what QEMU thinks it is 528fcf5ef2aSThomas Huth */ 529fcf5ef2aSThomas Huth int kvm_arm_sync_mpstate_to_kvm(ARMCPU *cpu) 530fcf5ef2aSThomas Huth { 531fcf5ef2aSThomas Huth if (cap_has_mp_state) { 532fcf5ef2aSThomas Huth struct kvm_mp_state mp_state = { 533062ba099SAlex Bennée .mp_state = (cpu->power_state == PSCI_OFF) ? 534062ba099SAlex Bennée KVM_MP_STATE_STOPPED : KVM_MP_STATE_RUNNABLE 535fcf5ef2aSThomas Huth }; 536fcf5ef2aSThomas Huth int ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MP_STATE, &mp_state); 537fcf5ef2aSThomas Huth if (ret) { 538fcf5ef2aSThomas Huth fprintf(stderr, "%s: failed to set MP_STATE %d/%s\n", 539fcf5ef2aSThomas Huth __func__, ret, strerror(-ret)); 540fcf5ef2aSThomas Huth return -1; 541fcf5ef2aSThomas Huth } 542fcf5ef2aSThomas Huth } 543fcf5ef2aSThomas Huth 544fcf5ef2aSThomas Huth return 0; 545fcf5ef2aSThomas Huth } 546fcf5ef2aSThomas Huth 547fcf5ef2aSThomas Huth /* 548fcf5ef2aSThomas Huth * Sync the KVM MP_STATE into QEMU 549fcf5ef2aSThomas Huth */ 550fcf5ef2aSThomas Huth int kvm_arm_sync_mpstate_to_qemu(ARMCPU *cpu) 551fcf5ef2aSThomas Huth { 552fcf5ef2aSThomas Huth if (cap_has_mp_state) { 553fcf5ef2aSThomas Huth struct kvm_mp_state mp_state; 554fcf5ef2aSThomas Huth int ret = kvm_vcpu_ioctl(CPU(cpu), KVM_GET_MP_STATE, &mp_state); 555fcf5ef2aSThomas Huth if (ret) { 556fcf5ef2aSThomas Huth fprintf(stderr, "%s: failed to get MP_STATE %d/%s\n", 557fcf5ef2aSThomas Huth __func__, ret, strerror(-ret)); 558fcf5ef2aSThomas Huth abort(); 559fcf5ef2aSThomas Huth } 560062ba099SAlex Bennée cpu->power_state = (mp_state.mp_state == KVM_MP_STATE_STOPPED) ? 561062ba099SAlex Bennée PSCI_OFF : PSCI_ON; 562fcf5ef2aSThomas Huth } 563fcf5ef2aSThomas Huth 564fcf5ef2aSThomas Huth return 0; 565fcf5ef2aSThomas Huth } 566fcf5ef2aSThomas Huth 567202ccb6bSDongjiu Geng int kvm_put_vcpu_events(ARMCPU *cpu) 568202ccb6bSDongjiu Geng { 569202ccb6bSDongjiu Geng CPUARMState *env = &cpu->env; 570202ccb6bSDongjiu Geng struct kvm_vcpu_events events; 571202ccb6bSDongjiu Geng int ret; 572202ccb6bSDongjiu Geng 573202ccb6bSDongjiu Geng if (!kvm_has_vcpu_events()) { 574202ccb6bSDongjiu Geng return 0; 575202ccb6bSDongjiu Geng } 576202ccb6bSDongjiu Geng 577202ccb6bSDongjiu Geng memset(&events, 0, sizeof(events)); 578202ccb6bSDongjiu Geng events.exception.serror_pending = env->serror.pending; 579202ccb6bSDongjiu Geng 580202ccb6bSDongjiu Geng /* Inject SError to guest with specified syndrome if host kernel 581202ccb6bSDongjiu Geng * supports it, otherwise inject SError without syndrome. 582202ccb6bSDongjiu Geng */ 583202ccb6bSDongjiu Geng if (cap_has_inject_serror_esr) { 584202ccb6bSDongjiu Geng events.exception.serror_has_esr = env->serror.has_esr; 585202ccb6bSDongjiu Geng events.exception.serror_esr = env->serror.esr; 586202ccb6bSDongjiu Geng } 587202ccb6bSDongjiu Geng 588202ccb6bSDongjiu Geng ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_VCPU_EVENTS, &events); 589202ccb6bSDongjiu Geng if (ret) { 590202ccb6bSDongjiu Geng error_report("failed to put vcpu events"); 591202ccb6bSDongjiu Geng } 592202ccb6bSDongjiu Geng 593202ccb6bSDongjiu Geng return ret; 594202ccb6bSDongjiu Geng } 595202ccb6bSDongjiu Geng 596202ccb6bSDongjiu Geng int kvm_get_vcpu_events(ARMCPU *cpu) 597202ccb6bSDongjiu Geng { 598202ccb6bSDongjiu Geng CPUARMState *env = &cpu->env; 599202ccb6bSDongjiu Geng struct kvm_vcpu_events events; 600202ccb6bSDongjiu Geng int ret; 601202ccb6bSDongjiu Geng 602202ccb6bSDongjiu Geng if (!kvm_has_vcpu_events()) { 603202ccb6bSDongjiu Geng return 0; 604202ccb6bSDongjiu Geng } 605202ccb6bSDongjiu Geng 606202ccb6bSDongjiu Geng memset(&events, 0, sizeof(events)); 607202ccb6bSDongjiu Geng ret = kvm_vcpu_ioctl(CPU(cpu), KVM_GET_VCPU_EVENTS, &events); 608202ccb6bSDongjiu Geng if (ret) { 609202ccb6bSDongjiu Geng error_report("failed to get vcpu events"); 610202ccb6bSDongjiu Geng return ret; 611202ccb6bSDongjiu Geng } 612202ccb6bSDongjiu Geng 613202ccb6bSDongjiu Geng env->serror.pending = events.exception.serror_pending; 614202ccb6bSDongjiu Geng env->serror.has_esr = events.exception.serror_has_esr; 615202ccb6bSDongjiu Geng env->serror.esr = events.exception.serror_esr; 616202ccb6bSDongjiu Geng 617202ccb6bSDongjiu Geng return 0; 618202ccb6bSDongjiu Geng } 619202ccb6bSDongjiu Geng 620fcf5ef2aSThomas Huth void kvm_arch_pre_run(CPUState *cs, struct kvm_run *run) 621fcf5ef2aSThomas Huth { 622fcf5ef2aSThomas Huth } 623fcf5ef2aSThomas Huth 624fcf5ef2aSThomas Huth MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run) 625fcf5ef2aSThomas Huth { 6265d721b78SAlexander Graf ARMCPU *cpu; 6275d721b78SAlexander Graf uint32_t switched_level; 6285d721b78SAlexander Graf 6295d721b78SAlexander Graf if (kvm_irqchip_in_kernel()) { 6305d721b78SAlexander Graf /* 6315d721b78SAlexander Graf * We only need to sync timer states with user-space interrupt 6325d721b78SAlexander Graf * controllers, so return early and save cycles if we don't. 6335d721b78SAlexander Graf */ 6345d721b78SAlexander Graf return MEMTXATTRS_UNSPECIFIED; 6355d721b78SAlexander Graf } 6365d721b78SAlexander Graf 6375d721b78SAlexander Graf cpu = ARM_CPU(cs); 6385d721b78SAlexander Graf 6395d721b78SAlexander Graf /* Synchronize our shadowed in-kernel device irq lines with the kvm ones */ 6405d721b78SAlexander Graf if (run->s.regs.device_irq_level != cpu->device_irq_level) { 6415d721b78SAlexander Graf switched_level = cpu->device_irq_level ^ run->s.regs.device_irq_level; 6425d721b78SAlexander Graf 6435d721b78SAlexander Graf qemu_mutex_lock_iothread(); 6445d721b78SAlexander Graf 6455d721b78SAlexander Graf if (switched_level & KVM_ARM_DEV_EL1_VTIMER) { 6465d721b78SAlexander Graf qemu_set_irq(cpu->gt_timer_outputs[GTIMER_VIRT], 6475d721b78SAlexander Graf !!(run->s.regs.device_irq_level & 6485d721b78SAlexander Graf KVM_ARM_DEV_EL1_VTIMER)); 6495d721b78SAlexander Graf switched_level &= ~KVM_ARM_DEV_EL1_VTIMER; 6505d721b78SAlexander Graf } 6515d721b78SAlexander Graf 6525d721b78SAlexander Graf if (switched_level & KVM_ARM_DEV_EL1_PTIMER) { 6535d721b78SAlexander Graf qemu_set_irq(cpu->gt_timer_outputs[GTIMER_PHYS], 6545d721b78SAlexander Graf !!(run->s.regs.device_irq_level & 6555d721b78SAlexander Graf KVM_ARM_DEV_EL1_PTIMER)); 6565d721b78SAlexander Graf switched_level &= ~KVM_ARM_DEV_EL1_PTIMER; 6575d721b78SAlexander Graf } 6585d721b78SAlexander Graf 659b1659527SAndrew Jones if (switched_level & KVM_ARM_DEV_PMU) { 660b1659527SAndrew Jones qemu_set_irq(cpu->pmu_interrupt, 661b1659527SAndrew Jones !!(run->s.regs.device_irq_level & KVM_ARM_DEV_PMU)); 662b1659527SAndrew Jones switched_level &= ~KVM_ARM_DEV_PMU; 663b1659527SAndrew Jones } 6645d721b78SAlexander Graf 6655d721b78SAlexander Graf if (switched_level) { 6665d721b78SAlexander Graf qemu_log_mask(LOG_UNIMP, "%s: unhandled in-kernel device IRQ %x\n", 6675d721b78SAlexander Graf __func__, switched_level); 6685d721b78SAlexander Graf } 6695d721b78SAlexander Graf 6705d721b78SAlexander Graf /* We also mark unknown levels as processed to not waste cycles */ 6715d721b78SAlexander Graf cpu->device_irq_level = run->s.regs.device_irq_level; 6725d721b78SAlexander Graf qemu_mutex_unlock_iothread(); 6735d721b78SAlexander Graf } 6745d721b78SAlexander Graf 675fcf5ef2aSThomas Huth return MEMTXATTRS_UNSPECIFIED; 676fcf5ef2aSThomas Huth } 677fcf5ef2aSThomas Huth 678fcf5ef2aSThomas Huth 679fcf5ef2aSThomas Huth int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run) 680fcf5ef2aSThomas Huth { 681fcf5ef2aSThomas Huth int ret = 0; 682fcf5ef2aSThomas Huth 683fcf5ef2aSThomas Huth switch (run->exit_reason) { 684fcf5ef2aSThomas Huth case KVM_EXIT_DEBUG: 685fcf5ef2aSThomas Huth if (kvm_arm_handle_debug(cs, &run->debug.arch)) { 686fcf5ef2aSThomas Huth ret = EXCP_DEBUG; 687fcf5ef2aSThomas Huth } /* otherwise return to guest */ 688fcf5ef2aSThomas Huth break; 689fcf5ef2aSThomas Huth default: 690fcf5ef2aSThomas Huth qemu_log_mask(LOG_UNIMP, "%s: un-handled exit reason %d\n", 691fcf5ef2aSThomas Huth __func__, run->exit_reason); 692fcf5ef2aSThomas Huth break; 693fcf5ef2aSThomas Huth } 694fcf5ef2aSThomas Huth return ret; 695fcf5ef2aSThomas Huth } 696fcf5ef2aSThomas Huth 697fcf5ef2aSThomas Huth bool kvm_arch_stop_on_emulation_error(CPUState *cs) 698fcf5ef2aSThomas Huth { 699fcf5ef2aSThomas Huth return true; 700fcf5ef2aSThomas Huth } 701fcf5ef2aSThomas Huth 702fcf5ef2aSThomas Huth int kvm_arch_process_async_events(CPUState *cs) 703fcf5ef2aSThomas Huth { 704fcf5ef2aSThomas Huth return 0; 705fcf5ef2aSThomas Huth } 706fcf5ef2aSThomas Huth 707fcf5ef2aSThomas Huth /* The #ifdef protections are until 32bit headers are imported and can 708fcf5ef2aSThomas Huth * be removed once both 32 and 64 bit reach feature parity. 709fcf5ef2aSThomas Huth */ 710fcf5ef2aSThomas Huth void kvm_arch_update_guest_debug(CPUState *cs, struct kvm_guest_debug *dbg) 711fcf5ef2aSThomas Huth { 712fcf5ef2aSThomas Huth #ifdef KVM_GUESTDBG_USE_SW_BP 713fcf5ef2aSThomas Huth if (kvm_sw_breakpoints_active(cs)) { 714fcf5ef2aSThomas Huth dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP; 715fcf5ef2aSThomas Huth } 716fcf5ef2aSThomas Huth #endif 717fcf5ef2aSThomas Huth #ifdef KVM_GUESTDBG_USE_HW 718fcf5ef2aSThomas Huth if (kvm_arm_hw_debug_active(cs)) { 719fcf5ef2aSThomas Huth dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW; 720fcf5ef2aSThomas Huth kvm_arm_copy_hw_debug_data(&dbg->arch); 721fcf5ef2aSThomas Huth } 722fcf5ef2aSThomas Huth #endif 723fcf5ef2aSThomas Huth } 724fcf5ef2aSThomas Huth 725fcf5ef2aSThomas Huth void kvm_arch_init_irq_routing(KVMState *s) 726fcf5ef2aSThomas Huth { 727fcf5ef2aSThomas Huth } 728fcf5ef2aSThomas Huth 729fcf5ef2aSThomas Huth int kvm_arch_irqchip_create(MachineState *ms, KVMState *s) 730fcf5ef2aSThomas Huth { 731fcf5ef2aSThomas Huth if (machine_kernel_irqchip_split(ms)) { 732fcf5ef2aSThomas Huth perror("-machine kernel_irqchip=split is not supported on ARM."); 733fcf5ef2aSThomas Huth exit(1); 734fcf5ef2aSThomas Huth } 735fcf5ef2aSThomas Huth 736fcf5ef2aSThomas Huth /* If we can create the VGIC using the newer device control API, we 737fcf5ef2aSThomas Huth * let the device do this when it initializes itself, otherwise we 738fcf5ef2aSThomas Huth * fall back to the old API */ 739fcf5ef2aSThomas Huth return kvm_check_extension(s, KVM_CAP_DEVICE_CTRL); 740fcf5ef2aSThomas Huth } 741fcf5ef2aSThomas Huth 742fcf5ef2aSThomas Huth int kvm_arm_vgic_probe(void) 743fcf5ef2aSThomas Huth { 744fcf5ef2aSThomas Huth if (kvm_create_device(kvm_state, 745fcf5ef2aSThomas Huth KVM_DEV_TYPE_ARM_VGIC_V3, true) == 0) { 746fcf5ef2aSThomas Huth return 3; 747fcf5ef2aSThomas Huth } else if (kvm_create_device(kvm_state, 748fcf5ef2aSThomas Huth KVM_DEV_TYPE_ARM_VGIC_V2, true) == 0) { 749fcf5ef2aSThomas Huth return 2; 750fcf5ef2aSThomas Huth } else { 751fcf5ef2aSThomas Huth return 0; 752fcf5ef2aSThomas Huth } 753fcf5ef2aSThomas Huth } 754fcf5ef2aSThomas Huth 755f6530926SEric Auger int kvm_arm_set_irq(int cpu, int irqtype, int irq, int level) 756f6530926SEric Auger { 757f6530926SEric Auger int kvm_irq = (irqtype << KVM_ARM_IRQ_TYPE_SHIFT) | irq; 758f6530926SEric Auger int cpu_idx1 = cpu % 256; 759f6530926SEric Auger int cpu_idx2 = cpu / 256; 760f6530926SEric Auger 761f6530926SEric Auger kvm_irq |= (cpu_idx1 << KVM_ARM_IRQ_VCPU_SHIFT) | 762f6530926SEric Auger (cpu_idx2 << KVM_ARM_IRQ_VCPU2_SHIFT); 763f6530926SEric Auger 764f6530926SEric Auger return kvm_set_irq(kvm_state, kvm_irq, !!level); 765f6530926SEric Auger } 766f6530926SEric Auger 767fcf5ef2aSThomas Huth int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route, 768fcf5ef2aSThomas Huth uint64_t address, uint32_t data, PCIDevice *dev) 769fcf5ef2aSThomas Huth { 770b05c81d2SEric Auger AddressSpace *as = pci_device_iommu_address_space(dev); 771b05c81d2SEric Auger hwaddr xlat, len, doorbell_gpa; 772b05c81d2SEric Auger MemoryRegionSection mrs; 773b05c81d2SEric Auger MemoryRegion *mr; 774b05c81d2SEric Auger int ret = 1; 775b05c81d2SEric Auger 776b05c81d2SEric Auger if (as == &address_space_memory) { 777fcf5ef2aSThomas Huth return 0; 778fcf5ef2aSThomas Huth } 779fcf5ef2aSThomas Huth 780b05c81d2SEric Auger /* MSI doorbell address is translated by an IOMMU */ 781b05c81d2SEric Auger 782b05c81d2SEric Auger rcu_read_lock(); 783bc6b1cecSPeter Maydell mr = address_space_translate(as, address, &xlat, &len, true, 784bc6b1cecSPeter Maydell MEMTXATTRS_UNSPECIFIED); 785b05c81d2SEric Auger if (!mr) { 786b05c81d2SEric Auger goto unlock; 787b05c81d2SEric Auger } 788b05c81d2SEric Auger mrs = memory_region_find(mr, xlat, 1); 789b05c81d2SEric Auger if (!mrs.mr) { 790b05c81d2SEric Auger goto unlock; 791b05c81d2SEric Auger } 792b05c81d2SEric Auger 793b05c81d2SEric Auger doorbell_gpa = mrs.offset_within_address_space; 794b05c81d2SEric Auger memory_region_unref(mrs.mr); 795b05c81d2SEric Auger 796b05c81d2SEric Auger route->u.msi.address_lo = doorbell_gpa; 797b05c81d2SEric Auger route->u.msi.address_hi = doorbell_gpa >> 32; 798b05c81d2SEric Auger 799b05c81d2SEric Auger trace_kvm_arm_fixup_msi_route(address, doorbell_gpa); 800b05c81d2SEric Auger 801b05c81d2SEric Auger ret = 0; 802b05c81d2SEric Auger 803b05c81d2SEric Auger unlock: 804b05c81d2SEric Auger rcu_read_unlock(); 805b05c81d2SEric Auger return ret; 806b05c81d2SEric Auger } 807b05c81d2SEric Auger 808fcf5ef2aSThomas Huth int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route, 809fcf5ef2aSThomas Huth int vector, PCIDevice *dev) 810fcf5ef2aSThomas Huth { 811fcf5ef2aSThomas Huth return 0; 812fcf5ef2aSThomas Huth } 813fcf5ef2aSThomas Huth 814fcf5ef2aSThomas Huth int kvm_arch_release_virq_post(int virq) 815fcf5ef2aSThomas Huth { 816fcf5ef2aSThomas Huth return 0; 817fcf5ef2aSThomas Huth } 818fcf5ef2aSThomas Huth 819fcf5ef2aSThomas Huth int kvm_arch_msi_data_to_gsi(uint32_t data) 820fcf5ef2aSThomas Huth { 821fcf5ef2aSThomas Huth return (data - 32) & 0xffff; 822fcf5ef2aSThomas Huth } 823