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author | 2015-08-28 09:58:54 +0800 | |
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committer | 2015-09-01 12:44:00 +0800 | |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/hw/s390x/s390-virtio-ccw.c | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/hw/s390x/s390-virtio-ccw.c')
-rw-r--r-- | qemu/hw/s390x/s390-virtio-ccw.c | 307 |
1 files changed, 307 insertions, 0 deletions
diff --git a/qemu/hw/s390x/s390-virtio-ccw.c b/qemu/hw/s390x/s390-virtio-ccw.c new file mode 100644 index 000000000..4c51d1a5b --- /dev/null +++ b/qemu/hw/s390x/s390-virtio-ccw.c @@ -0,0 +1,307 @@ +/* + * virtio ccw machine + * + * Copyright 2012 IBM Corp. + * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or (at + * your option) any later version. See the COPYING file in the top-level + * directory. + */ + +#include "hw/boards.h" +#include "exec/address-spaces.h" +#include "s390-virtio.h" +#include "hw/s390x/sclp.h" +#include "hw/s390x/s390_flic.h" +#include "ioinst.h" +#include "css.h" +#include "virtio-ccw.h" +#include "qemu/config-file.h" +#include "s390-pci-bus.h" + +#define TYPE_S390_CCW_MACHINE "s390-ccw-machine" + +#define S390_CCW_MACHINE(obj) \ + OBJECT_CHECK(S390CcwMachineState, (obj), TYPE_S390_CCW_MACHINE) + +typedef struct S390CcwMachineState { + /*< private >*/ + MachineState parent_obj; + + /*< public >*/ + bool aes_key_wrap; + bool dea_key_wrap; +} S390CcwMachineState; + +void io_subsystem_reset(void) +{ + DeviceState *css, *sclp, *flic, *diag288; + + css = DEVICE(object_resolve_path_type("", "virtual-css-bridge", NULL)); + if (css) { + qdev_reset_all(css); + } + sclp = DEVICE(object_resolve_path_type("", + "s390-sclp-event-facility", NULL)); + if (sclp) { + qdev_reset_all(sclp); + } + flic = DEVICE(object_resolve_path_type("", "s390-flic", NULL)); + if (flic) { + qdev_reset_all(flic); + } + diag288 = DEVICE(object_resolve_path_type("", "diag288", NULL)); + if (diag288) { + qdev_reset_all(diag288); + } +} + +static int virtio_ccw_hcall_notify(const uint64_t *args) +{ + uint64_t subch_id = args[0]; + uint64_t queue = args[1]; + SubchDev *sch; + int cssid, ssid, schid, m; + + if (ioinst_disassemble_sch_ident(subch_id, &m, &cssid, &ssid, &schid)) { + return -EINVAL; + } + sch = css_find_subch(m, cssid, ssid, schid); + if (!sch || !css_subch_visible(sch)) { + return -EINVAL; + } + if (queue >= VIRTIO_CCW_QUEUE_MAX) { + return -EINVAL; + } + virtio_queue_notify(virtio_ccw_get_vdev(sch), queue); + return 0; + +} + +static int virtio_ccw_hcall_early_printk(const uint64_t *args) +{ + uint64_t mem = args[0]; + + if (mem < ram_size) { + /* Early printk */ + return 0; + } + return -EINVAL; +} + +static void virtio_ccw_register_hcalls(void) +{ + s390_register_virtio_hypercall(KVM_S390_VIRTIO_CCW_NOTIFY, + virtio_ccw_hcall_notify); + /* Tolerate early printk. */ + s390_register_virtio_hypercall(KVM_S390_VIRTIO_NOTIFY, + virtio_ccw_hcall_early_printk); +} + +static void ccw_init(MachineState *machine) +{ + ram_addr_t my_ram_size = machine->ram_size; + MemoryRegion *sysmem = get_system_memory(); + MemoryRegion *ram = g_new(MemoryRegion, 1); + sclpMemoryHotplugDev *mhd = init_sclp_memory_hotplug_dev(); + uint8_t *storage_keys; + int ret; + VirtualCssBus *css_bus; + DeviceState *dev; + QemuOpts *opts = qemu_opts_find(qemu_find_opts("memory"), NULL); + ram_addr_t pad_size = 0; + ram_addr_t maxmem = qemu_opt_get_size(opts, "maxmem", my_ram_size); + ram_addr_t standby_mem_size = maxmem - my_ram_size; + uint64_t kvm_limit; + + /* 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. + * The variable 'mhd->increment_size' is an exponent of 2 that can be + * used to calculate the size (in bytes) of an increment. */ + mhd->increment_size = 20; + while ((my_ram_size >> mhd->increment_size) > MAX_STORAGE_INCREMENTS) { + mhd->increment_size++; + } + while ((standby_mem_size >> mhd->increment_size) > MAX_STORAGE_INCREMENTS) { + mhd->increment_size++; + } + + /* The core and standby memory areas need to be aligned with + * the increment size. In effect, this can cause the + * user-specified memory size to be rounded down to align + * with the nearest increment boundary. */ + standby_mem_size = standby_mem_size >> mhd->increment_size + << mhd->increment_size; + my_ram_size = my_ram_size >> mhd->increment_size + << mhd->increment_size; + + /* let's propagate the changed ram size into the global variable. */ + ram_size = my_ram_size; + machine->maxram_size = my_ram_size + standby_mem_size; + + ret = s390_set_memory_limit(machine->maxram_size, &kvm_limit); + if (ret == -E2BIG) { + hw_error("qemu: host supports a maximum of %" PRIu64 " GB", + kvm_limit >> 30); + } else if (ret) { + hw_error("qemu: setting the guest size failed"); + } + + /* get a BUS */ + css_bus = virtual_css_bus_init(); + s390_sclp_init(); + s390_init_ipl_dev(machine->kernel_filename, machine->kernel_cmdline, + machine->initrd_filename, "s390-ccw.img", true); + s390_flic_init(); + + dev = qdev_create(NULL, TYPE_S390_PCI_HOST_BRIDGE); + object_property_add_child(qdev_get_machine(), TYPE_S390_PCI_HOST_BRIDGE, + OBJECT(dev), NULL); + qdev_init_nofail(dev); + + /* register hypercalls */ + virtio_ccw_register_hcalls(); + + /* allocate RAM for core */ + 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); + + /* If the size of ram is not on a MEM_SECTION_SIZE boundary, + calculate the pad size necessary to force this boundary. */ + if (standby_mem_size) { + if (my_ram_size % MEM_SECTION_SIZE) { + pad_size = MEM_SECTION_SIZE - my_ram_size % MEM_SECTION_SIZE; + } + my_ram_size += standby_mem_size + pad_size; + mhd->pad_size = pad_size; + mhd->standby_mem_size = standby_mem_size; + } + + /* allocate storage keys */ + storage_keys = g_malloc0(my_ram_size / TARGET_PAGE_SIZE); + + /* init CPUs */ + s390_init_cpus(machine->cpu_model, storage_keys); + + if (kvm_enabled()) { + kvm_s390_enable_css_support(s390_cpu_addr2state(0)); + } + /* + * Create virtual css and set it as default so that non mcss-e + * enabled guests only see virtio devices. + */ + ret = css_create_css_image(VIRTUAL_CSSID, true); + assert(ret == 0); + + /* Create VirtIO network adapters */ + s390_create_virtio_net(BUS(css_bus), "virtio-net-ccw"); + + /* Register savevm handler for guest TOD clock */ + register_savevm(NULL, "todclock", 0, 1, + gtod_save, gtod_load, kvm_state); +} + +static void ccw_machine_class_init(ObjectClass *oc, void *data) +{ + MachineClass *mc = MACHINE_CLASS(oc); + NMIClass *nc = NMI_CLASS(oc); + + mc->init = ccw_init; + mc->block_default_type = IF_VIRTIO; + mc->no_cdrom = 1; + mc->no_floppy = 1; + mc->no_serial = 1; + mc->no_parallel = 1; + mc->no_sdcard = 1; + mc->use_sclp = 1; + mc->max_cpus = 255; + nc->nmi_monitor_handler = s390_nmi; +} + +static inline bool machine_get_aes_key_wrap(Object *obj, Error **errp) +{ + S390CcwMachineState *ms = S390_CCW_MACHINE(obj); + + return ms->aes_key_wrap; +} + +static inline void machine_set_aes_key_wrap(Object *obj, bool value, + Error **errp) +{ + S390CcwMachineState *ms = S390_CCW_MACHINE(obj); + + ms->aes_key_wrap = value; +} + +static inline bool machine_get_dea_key_wrap(Object *obj, Error **errp) +{ + S390CcwMachineState *ms = S390_CCW_MACHINE(obj); + + return ms->dea_key_wrap; +} + +static inline void machine_set_dea_key_wrap(Object *obj, bool value, + Error **errp) +{ + S390CcwMachineState *ms = S390_CCW_MACHINE(obj); + + ms->dea_key_wrap = value; +} + +static inline void s390_machine_initfn(Object *obj) +{ + object_property_add_bool(obj, "aes-key-wrap", + machine_get_aes_key_wrap, + machine_set_aes_key_wrap, NULL); + object_property_set_description(obj, "aes-key-wrap", + "enable/disable AES key wrapping using the CPACF wrapping key", + NULL); + object_property_set_bool(obj, true, "aes-key-wrap", NULL); + + object_property_add_bool(obj, "dea-key-wrap", + machine_get_dea_key_wrap, + machine_set_dea_key_wrap, NULL); + object_property_set_description(obj, "dea-key-wrap", + "enable/disable DEA key wrapping using the CPACF wrapping key", + NULL); + object_property_set_bool(obj, true, "dea-key-wrap", NULL); +} + +static const TypeInfo ccw_machine_info = { + .name = TYPE_S390_CCW_MACHINE, + .parent = TYPE_MACHINE, + .abstract = true, + .instance_size = sizeof(S390CcwMachineState), + .instance_init = s390_machine_initfn, + .class_init = ccw_machine_class_init, + .interfaces = (InterfaceInfo[]) { + { TYPE_NMI }, + { } + }, +}; + +static void ccw_machine_2_4_class_init(ObjectClass *oc, void *data) +{ + MachineClass *mc = MACHINE_CLASS(oc); + + mc->name = "s390-ccw-virtio-2.4"; + mc->alias = "s390-ccw-virtio"; + mc->desc = "VirtIO-ccw based S390 machine v2.4"; + mc->is_default = 1; +} + +static const TypeInfo ccw_machine_2_4_info = { + .name = TYPE_S390_CCW_MACHINE "2.4", + .parent = TYPE_S390_CCW_MACHINE, + .class_init = ccw_machine_2_4_class_init, +}; + +static void ccw_machine_register_types(void) +{ + type_register_static(&ccw_machine_info); + type_register_static(&ccw_machine_2_4_info); +} + +type_init(ccw_machine_register_types) |