X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Fhw%2Fs390x%2Fs390-virtio.c;h=544c61643d1ae0ca7ad3adae55f76794a7a4143d;hb=a14b48d18a9ed03ec191cf16b162206998a895ce;hp=1284e77b22cfa175f61e2c250c456f4b9fce27b5;hpb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;p=kvmfornfv.git diff --git a/qemu/hw/s390x/s390-virtio.c b/qemu/hw/s390x/s390-virtio.c index 1284e77b2..544c61643 100644 --- a/qemu/hw/s390x/s390-virtio.c +++ b/qemu/hw/s390x/s390-virtio.c @@ -21,8 +21,11 @@ * License along with this library; if not, see . */ +#include "qemu/osdep.h" +#include "qapi/error.h" #include "hw/hw.h" #include "qapi/qmp/qerror.h" +#include "qemu/error-report.h" #include "sysemu/block-backend.h" #include "sysemu/blockdev.h" #include "sysemu/sysemu.h" @@ -30,14 +33,15 @@ #include "hw/boards.h" #include "hw/loader.h" #include "hw/virtio/virtio.h" -#include "hw/sysbus.h" #include "sysemu/kvm.h" #include "exec/address-spaces.h" +#include "sysemu/qtest.h" -#include "hw/s390x/s390-virtio-bus.h" #include "hw/s390x/sclp.h" #include "hw/s390x/s390_flic.h" #include "hw/s390x/s390-virtio.h" +#include "hw/s390x/storage-keys.h" +#include "hw/s390x/ipl.h" #include "cpu.h" //#define DEBUG_S390 @@ -51,94 +55,20 @@ #endif #define MAX_BLK_DEVS 10 -#define ZIPL_FILENAME "s390-zipl.rom" -#define TYPE_S390_MACHINE "s390-machine" #define S390_TOD_CLOCK_VALUE_MISSING 0x00 #define S390_TOD_CLOCK_VALUE_PRESENT 0x01 -static VirtIOS390Bus *s390_bus; -static S390CPU **ipi_states; +static S390CPU **cpu_states; S390CPU *s390_cpu_addr2state(uint16_t cpu_addr) { - if (cpu_addr >= smp_cpus) { + if (cpu_addr >= max_cpus) { return NULL; } - return ipi_states[cpu_addr]; -} - -static int s390_virtio_hcall_notify(const uint64_t *args) -{ - uint64_t mem = args[0]; - int r = 0, i; - - if (mem > ram_size) { - VirtIOS390Device *dev = s390_virtio_bus_find_vring(s390_bus, mem, &i); - if (dev) { - /* - * Older kernels will use the virtqueue before setting DRIVER_OK. - * In this case the feature bits are not yet up to date, meaning - * that several funny things can happen, e.g. the guest thinks - * EVENT_IDX is on and QEMU thinks it is off. Let's force a feature - * and status sync. - */ - if (!(dev->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK)) { - s390_virtio_device_update_status(dev); - } - virtio_queue_notify(dev->vdev, i); - } else { - r = -EINVAL; - } - } else { - /* Early printk */ - } - return r; -} - -static int s390_virtio_hcall_reset(const uint64_t *args) -{ - uint64_t mem = args[0]; - VirtIOS390Device *dev; - - dev = s390_virtio_bus_find_mem(s390_bus, mem); - if (dev == NULL) { - return -EINVAL; - } - virtio_reset(dev->vdev); - address_space_stb(&address_space_memory, - dev->dev_offs + VIRTIO_DEV_OFFS_STATUS, 0, - MEMTXATTRS_UNSPECIFIED, NULL); - s390_virtio_device_sync(dev); - s390_virtio_reset_idx(dev); - - return 0; -} - -static int s390_virtio_hcall_set_status(const uint64_t *args) -{ - uint64_t mem = args[0]; - int r = 0; - VirtIOS390Device *dev; - - dev = s390_virtio_bus_find_mem(s390_bus, mem); - if (dev) { - s390_virtio_device_update_status(dev); - } else { - r = -EINVAL; - } - return r; -} - -static void s390_virtio_register_hcalls(void) -{ - s390_register_virtio_hypercall(KVM_S390_VIRTIO_NOTIFY, - s390_virtio_hcall_notify); - s390_register_virtio_hypercall(KVM_S390_VIRTIO_RESET, - s390_virtio_hcall_reset); - s390_register_virtio_hypercall(KVM_S390_VIRTIO_SET_STATUS, - s390_virtio_hcall_set_status); + /* Fast lookup via CPU ID */ + return cpu_states[cpu_addr]; } void s390_init_ipl_dev(const char *kernel_filename, @@ -147,9 +77,9 @@ void s390_init_ipl_dev(const char *kernel_filename, const char *firmware, bool enforce_bios) { - DeviceState *dev; + Object *new = object_new(TYPE_S390_IPL); + DeviceState *dev = DEVICE(new); - dev = qdev_create(NULL, "s390-ipl"); if (kernel_filename) { qdev_prop_set_string(dev, "kernel", kernel_filename); } @@ -159,32 +89,35 @@ void s390_init_ipl_dev(const char *kernel_filename, qdev_prop_set_string(dev, "cmdline", kernel_cmdline); qdev_prop_set_string(dev, "firmware", firmware); qdev_prop_set_bit(dev, "enforce_bios", enforce_bios); - object_property_add_child(qdev_get_machine(), "s390-ipl", - OBJECT(dev), NULL); + object_property_add_child(qdev_get_machine(), TYPE_S390_IPL, + new, NULL); + object_unref(new); qdev_init_nofail(dev); } -void s390_init_cpus(const char *cpu_model, uint8_t *storage_keys) +void s390_init_cpus(MachineState *machine) { int i; + gchar *name; - if (cpu_model == NULL) { - cpu_model = "host"; + if (machine->cpu_model == NULL) { + machine->cpu_model = "host"; } - ipi_states = g_malloc(sizeof(S390CPU *) * smp_cpus); - - for (i = 0; i < smp_cpus; i++) { - S390CPU *cpu; - CPUState *cs; + cpu_states = g_new0(S390CPU *, max_cpus); - cpu = cpu_s390x_init(cpu_model); - cs = CPU(cpu); + for (i = 0; i < max_cpus; i++) { + name = g_strdup_printf("cpu[%i]", i); + object_property_add_link(OBJECT(machine), name, TYPE_S390_CPU, + (Object **) &cpu_states[i], + object_property_allow_set_link, + OBJ_PROP_LINK_UNREF_ON_RELEASE, + &error_abort); + g_free(name); + } - ipi_states[i] = cpu; - cs->halted = 1; - cs->exception_index = EXCP_HLT; - cpu->env.storage_keys = storage_keys; + for (i = 0; i < smp_cpus; i++) { + s390x_new_cpu(machine->cpu_model, i, &error_fatal); } } @@ -201,10 +134,7 @@ void s390_create_virtio_net(BusState *bus, const char *name) nd->model = g_strdup("virtio"); } - if (strcmp(nd->model, "virtio")) { - fprintf(stderr, "S390 only supports VirtIO nics\n"); - exit(1); - } + qemu_check_nic_model(nd, "virtio"); dev = qdev_create(bus, name); qdev_set_nic_properties(dev, nd); @@ -257,68 +187,6 @@ int gtod_load(QEMUFile *f, void *opaque, int version_id) return 0; } -/* PC hardware initialisation */ -static void s390_init(MachineState *machine) -{ - ram_addr_t my_ram_size = machine->ram_size; - MemoryRegion *sysmem = get_system_memory(); - MemoryRegion *ram = g_new(MemoryRegion, 1); - int increment_size = 20; - uint8_t *storage_keys; - void *virtio_region; - hwaddr virtio_region_len; - hwaddr virtio_region_start; - - /* - * The storage increment size is a multiple of 1M and is a power of 2. - * The number of storage increments must be MAX_STORAGE_INCREMENTS or - * fewer. - */ - while ((my_ram_size >> increment_size) > MAX_STORAGE_INCREMENTS) { - increment_size++; - } - my_ram_size = my_ram_size >> increment_size << increment_size; - - /* let's propagate the changed ram size into the global variable. */ - ram_size = my_ram_size; - - /* get a BUS */ - s390_bus = s390_virtio_bus_init(&my_ram_size); - s390_sclp_init(); - s390_init_ipl_dev(machine->kernel_filename, machine->kernel_cmdline, - machine->initrd_filename, ZIPL_FILENAME, false); - s390_flic_init(); - - /* register hypercalls */ - s390_virtio_register_hcalls(); - - /* allocate RAM */ - memory_region_init_ram(ram, NULL, "s390.ram", my_ram_size, &error_abort); - vmstate_register_ram_global(ram); - memory_region_add_subregion(sysmem, 0, ram); - - /* clear virtio region */ - virtio_region_len = my_ram_size - ram_size; - virtio_region_start = ram_size; - virtio_region = cpu_physical_memory_map(virtio_region_start, - &virtio_region_len, true); - memset(virtio_region, 0, virtio_region_len); - cpu_physical_memory_unmap(virtio_region, virtio_region_len, 1, - virtio_region_len); - - /* allocate storage keys */ - storage_keys = g_malloc0(my_ram_size / TARGET_PAGE_SIZE); - - /* init CPUs */ - s390_init_cpus(machine->cpu_model, storage_keys); - - /* Create VirtIO network adapters */ - s390_create_virtio_net((BusState *)s390_bus, "virtio-net-s390"); - - /* Register savevm handler for guest TOD clock */ - register_savevm(NULL, "todclock", 0, 1, gtod_save, gtod_load, NULL); -} - void s390_nmi(NMIState *n, int cpu_index, Error **errp) { CPUState *cs = qemu_get_cpu(cpu_index); @@ -328,39 +196,15 @@ void s390_nmi(NMIState *n, int cpu_index, Error **errp) } } -static void s390_machine_class_init(ObjectClass *oc, void *data) +void s390_machine_reset(void) { - MachineClass *mc = MACHINE_CLASS(oc); - NMIClass *nc = NMI_CLASS(oc); - - mc->name = "s390-virtio"; - mc->alias = "s390"; - mc->desc = "VirtIO based S390 machine"; - mc->init = s390_init; - mc->block_default_type = IF_VIRTIO; - mc->max_cpus = 255; - mc->no_serial = 1; - mc->no_parallel = 1; - mc->use_virtcon = 1; - mc->no_floppy = 1; - mc->no_cdrom = 1; - mc->no_sdcard = 1; - nc->nmi_monitor_handler = s390_nmi; -} + S390CPU *ipl_cpu = S390_CPU(qemu_get_cpu(0)); -static const TypeInfo s390_machine_info = { - .name = TYPE_S390_MACHINE, - .parent = TYPE_MACHINE, - .class_init = s390_machine_class_init, - .interfaces = (InterfaceInfo[]) { - { TYPE_NMI }, - { } - }, -}; - -static void s390_machine_register_types(void) -{ - type_register_static(&s390_machine_info); -} + qemu_devices_reset(); + s390_cmma_reset(); + s390_crypto_reset(); -type_init(s390_machine_register_types) + /* all cpus are stopped - configure and start the ipl cpu only */ + s390_ipl_prepare_cpu(ipl_cpu); + s390_cpu_set_state(CPU_STATE_OPERATING, ipl_cpu); +}