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7104bae9de
qemu/hw/s390x/s390-virtio-ccw.c
Farhan Ali 7104bae9de hw/s390x: provide loadparm property for the machine 
In order to specify the LOADPARM value one may now add ",loadparm=xxx"
parameter to the "-machine s390-ccw-virtio" option.

The property setter will normalize and check the value provided much
like the way the HMC does.

The value is stored, but not used at the moment.

Initial patch from Eugene (jno) Dvurechenski.

Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com>
Signed-off-by: Farhan Ali <alifm@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2017-05-02 15:08:54 +02:00

539 lines
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/*
* 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 "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu-common.h"
#include "cpu.h"
#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 "hw/s390x/ioinst.h"
#include "hw/s390x/css.h"
#include "virtio-ccw.h"
#include "qemu/config-file.h"
#include "s390-pci-bus.h"
#include "hw/s390x/storage-keys.h"
#include "hw/compat.h"
#include "ipl.h"
#include "hw/s390x/s390-virtio-ccw.h"
#include "hw/s390x/css-bridge.h"
static const char *const reset_dev_types[] = {
TYPE_VIRTUAL_CSS_BRIDGE,
"s390-sclp-event-facility",
"s390-flic",
"diag288",
};
void subsystem_reset(void)
{
DeviceState *dev;
int i;
for (i = 0; i < ARRAY_SIZE(reset_dev_types); i++) {
dev = DEVICE(object_resolve_path_type("", reset_dev_types[i], NULL));
if (dev) {
qdev_reset_all(dev);
}
}
}
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_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);
}
void s390_memory_init(ram_addr_t mem_size)
{
MemoryRegion *sysmem = get_system_memory();
MemoryRegion *ram = g_new(MemoryRegion, 1);
/* allocate RAM for core */
memory_region_allocate_system_memory(ram, NULL, "s390.ram", mem_size);
memory_region_add_subregion(sysmem, 0, ram);
/* Initialize storage key device */
s390_skeys_init();
}
static void ccw_init(MachineState *machine)
{
int ret;
VirtualCssBus *css_bus;
DeviceState *dev;
s390_sclp_init();
s390_memory_init(machine->ram_size);
s390_flic_init();
/* get a BUS */
css_bus = virtual_css_bus_init();
s390_init_ipl_dev(machine->kernel_filename, machine->kernel_cmdline,
machine->initrd_filename, "s390-ccw.img",
"s390-netboot.img", true);
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();
/* init CPUs */
s390_init_cpus(machine);
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 s390_cpu_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
gchar *name;
S390CPU *cpu = S390_CPU(dev);
CPUState *cs = CPU(dev);
name = g_strdup_printf("cpu[%i]", cpu->env.cpu_num);
object_property_set_link(OBJECT(hotplug_dev), OBJECT(cs), name,
errp);
g_free(name);
}
static void s390_machine_device_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
s390_cpu_plug(hotplug_dev, dev, errp);
}
}
static HotplugHandler *s390_get_hotplug_handler(MachineState *machine,
DeviceState *dev)
{
if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
return HOTPLUG_HANDLER(machine);
}
return NULL;
}
static void s390_hot_add_cpu(const int64_t id, Error **errp)
{
MachineState *machine = MACHINE(qdev_get_machine());
s390x_new_cpu(machine->cpu_model, id, errp);
}
static void ccw_machine_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
NMIClass *nc = NMI_CLASS(oc);
HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc);
s390mc->ri_allowed = true;
s390mc->cpu_model_allowed = true;
mc->init = ccw_init;
mc->reset = s390_machine_reset;
mc->hot_add_cpu = s390_hot_add_cpu;
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 = 248;
mc->get_hotplug_handler = s390_get_hotplug_handler;
hc->plug = s390_machine_device_plug;
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;
}
bool ri_allowed(void)
{
if (kvm_enabled()) {
MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
if (object_class_dynamic_cast(OBJECT_CLASS(mc),
TYPE_S390_CCW_MACHINE)) {
S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc);
return s390mc->ri_allowed;
}
/*
* Make sure the "none" machine can have ri, otherwise it won't * be
* unlocked in KVM and therefore the host CPU model might be wrong.
*/
return true;
}
return 0;
}
bool cpu_model_allowed(void)
{
MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
if (object_class_dynamic_cast(OBJECT_CLASS(mc),
TYPE_S390_CCW_MACHINE)) {
S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc);
return s390mc->cpu_model_allowed;
}
/* allow CPU model qmp queries with the "none" machine */
return true;
}
static char *machine_get_loadparm(Object *obj, Error **errp)
{
S390CcwMachineState *ms = S390_CCW_MACHINE(obj);
return g_memdup(ms->loadparm, sizeof(ms->loadparm));
}
static void machine_set_loadparm(Object *obj, const char *val, Error **errp)
{
S390CcwMachineState *ms = S390_CCW_MACHINE(obj);
int i;
for (i = 0; i < sizeof(ms->loadparm) && val[i]; i++) {
uint8_t c = toupper(val[i]); /* mimic HMC */
if (('A' <= c && c <= 'Z') || ('0' <= c && c <= '9') || (c == '.') ||
(c == ' ')) {
ms->loadparm[i] = c;
} else {
error_setg(errp, "LOADPARM: invalid character '%c' (ASCII 0x%02x)",
c, c);
return;
}
}
for (; i < sizeof(ms->loadparm); i++) {
ms->loadparm[i] = ' '; /* pad right with spaces */
}
}
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);
object_property_add_str(obj, "loadparm",
machine_get_loadparm, machine_set_loadparm, NULL);
object_property_set_description(obj, "loadparm",
"Up to 8 chars in set of [A-Za-z0-9. ] (lower case chars converted"
" to upper case) to pass to machine loader, boot manager,"
" and guest kernel",
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_size = sizeof(S390CcwMachineClass),
.class_init = ccw_machine_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_NMI },
{ TYPE_HOTPLUG_HANDLER},
{ }
},
};
#define DEFINE_CCW_MACHINE(suffix, verstr, latest) \
static void ccw_machine_##suffix##_class_init(ObjectClass *oc, \
void *data) \
{ \
MachineClass *mc = MACHINE_CLASS(oc); \
ccw_machine_##suffix##_class_options(mc); \
mc->desc = "VirtIO-ccw based S390 machine v" verstr; \
if (latest) { \
mc->alias = "s390-ccw-virtio"; \
mc->is_default = 1; \
} \
} \
static void ccw_machine_##suffix##_instance_init(Object *obj) \
{ \
MachineState *machine = MACHINE(obj); \
ccw_machine_##suffix##_instance_options(machine); \
} \
static const TypeInfo ccw_machine_##suffix##_info = { \
.name = MACHINE_TYPE_NAME("s390-ccw-virtio-" verstr), \
.parent = TYPE_S390_CCW_MACHINE, \
.class_init = ccw_machine_##suffix##_class_init, \
.instance_init = ccw_machine_##suffix##_instance_init, \
}; \
static void ccw_machine_register_##suffix(void) \
{ \
type_register_static(&ccw_machine_##suffix##_info); \
} \
type_init(ccw_machine_register_##suffix)
#define CCW_COMPAT_2_9 \
HW_COMPAT_2_9
#define CCW_COMPAT_2_8 \
HW_COMPAT_2_8 \
{\
.driver = TYPE_S390_FLIC_COMMON,\
.property = "adapter_routes_max_batch",\
.value = "64",\
},
#define CCW_COMPAT_2_7 \
HW_COMPAT_2_7
#define CCW_COMPAT_2_6 \
HW_COMPAT_2_6 \
{\
.driver = TYPE_S390_IPL,\
.property = "iplbext_migration",\
.value = "off",\
}, {\
.driver = TYPE_VIRTUAL_CSS_BRIDGE,\
.property = "css_dev_path",\
.value = "off",\
},
#define CCW_COMPAT_2_5 \
HW_COMPAT_2_5
#define CCW_COMPAT_2_4 \
HW_COMPAT_2_4 \
{\
.driver = TYPE_S390_SKEYS,\
.property = "migration-enabled",\
.value = "off",\
},{\
.driver = "virtio-blk-ccw",\
.property = "max_revision",\
.value = "0",\
},{\
.driver = "virtio-balloon-ccw",\
.property = "max_revision",\
.value = "0",\
},{\
.driver = "virtio-serial-ccw",\
.property = "max_revision",\
.value = "0",\
},{\
.driver = "virtio-9p-ccw",\
.property = "max_revision",\
.value = "0",\
},{\
.driver = "virtio-rng-ccw",\
.property = "max_revision",\
.value = "0",\
},{\
.driver = "virtio-net-ccw",\
.property = "max_revision",\
.value = "0",\
},{\
.driver = "virtio-scsi-ccw",\
.property = "max_revision",\
.value = "0",\
},{\
.driver = "vhost-scsi-ccw",\
.property = "max_revision",\
.value = "0",\
},
static void ccw_machine_2_10_instance_options(MachineState *machine)
{
}
static void ccw_machine_2_10_class_options(MachineClass *mc)
{
}
DEFINE_CCW_MACHINE(2_10, "2.10", true);
static void ccw_machine_2_9_instance_options(MachineState *machine)
{
ccw_machine_2_10_instance_options(machine);
}
static void ccw_machine_2_9_class_options(MachineClass *mc)
{
ccw_machine_2_10_class_options(mc);
SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_9);
}
DEFINE_CCW_MACHINE(2_9, "2.9", false);
static void ccw_machine_2_8_instance_options(MachineState *machine)
{
ccw_machine_2_9_instance_options(machine);
}
static void ccw_machine_2_8_class_options(MachineClass *mc)
{
ccw_machine_2_9_class_options(mc);
SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_8);
}
DEFINE_CCW_MACHINE(2_8, "2.8", false);
static void ccw_machine_2_7_instance_options(MachineState *machine)
{
ccw_machine_2_8_instance_options(machine);
}
static void ccw_machine_2_7_class_options(MachineClass *mc)
{
S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc);
s390mc->cpu_model_allowed = false;
ccw_machine_2_8_class_options(mc);
SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_7);
}
DEFINE_CCW_MACHINE(2_7, "2.7", false);
static void ccw_machine_2_6_instance_options(MachineState *machine)
{
ccw_machine_2_7_instance_options(machine);
}
static void ccw_machine_2_6_class_options(MachineClass *mc)
{
S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc);
s390mc->ri_allowed = false;
ccw_machine_2_7_class_options(mc);
SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_6);
}
DEFINE_CCW_MACHINE(2_6, "2.6", false);
static void ccw_machine_2_5_instance_options(MachineState *machine)
{
ccw_machine_2_6_instance_options(machine);
}
static void ccw_machine_2_5_class_options(MachineClass *mc)
{
ccw_machine_2_6_class_options(mc);
SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_5);
}
DEFINE_CCW_MACHINE(2_5, "2.5", false);
static void ccw_machine_2_4_instance_options(MachineState *machine)
{
ccw_machine_2_5_instance_options(machine);
}
static void ccw_machine_2_4_class_options(MachineClass *mc)
{
ccw_machine_2_5_class_options(mc);
SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_4);
}
DEFINE_CCW_MACHINE(2_4, "2.4", false);
static void ccw_machine_register_types(void)
{
type_register_static(&ccw_machine_info);
}
type_init(ccw_machine_register_types)
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