#include "qemu/osdep.h"
#include "qemu/error-report.h"
+#include "qemu/main-loop.h"
+#include "qemu/module.h"
#include "hw/sysbus.h"
-#include "migration/qemu-file.h"
+#include "hw/s390x/ioinst.h"
#include "hw/s390x/s390_flic.h"
+#include "hw/qdev-properties.h"
+#include "hw/s390x/css.h"
#include "trace.h"
+#include "cpu.h"
+#include "qapi/error.h"
+#include "hw/s390x/s390-virtio-ccw.h"
+
+S390FLICStateClass *s390_get_flic_class(S390FLICState *fs)
+{
+ static S390FLICStateClass *class;
+
+ if (!class) {
+ /* we only have one flic device, so this is fine to cache */
+ class = S390_FLIC_COMMON_GET_CLASS(fs);
+ }
+ return class;
+}
+
+QEMUS390FLICState *s390_get_qemu_flic(S390FLICState *fs)
+{
+ static QEMUS390FLICState *flic;
+
+ if (!flic) {
+ /* we only have one flic device, so this is fine to cache */
+ flic = QEMU_S390_FLIC(fs);
+ }
+ return flic;
+}
S390FLICState *s390_get_flic(void)
{
- S390FLICState *fs;
+ static S390FLICState *fs;
- fs = S390_FLIC_COMMON(object_resolve_path(TYPE_KVM_S390_FLIC, NULL));
if (!fs) {
- fs = S390_FLIC_COMMON(object_resolve_path(TYPE_QEMU_S390_FLIC, NULL));
+ fs = S390_FLIC_COMMON(object_resolve_path_type("",
+ TYPE_S390_FLIC_COMMON,
+ NULL));
}
return fs;
}
{
DeviceState *dev;
- dev = s390_flic_kvm_create();
- if (!dev) {
- dev = qdev_create(NULL, TYPE_QEMU_S390_FLIC);
+ if (kvm_enabled()) {
+ dev = qdev_new(TYPE_KVM_S390_FLIC);
+ object_property_add_child(qdev_get_machine(), TYPE_KVM_S390_FLIC,
+ OBJECT(dev));
+ } else {
+ dev = qdev_new(TYPE_QEMU_S390_FLIC);
object_property_add_child(qdev_get_machine(), TYPE_QEMU_S390_FLIC,
- OBJECT(dev), NULL);
+ OBJECT(dev));
}
- qdev_init_nofail(dev);
+ sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
}
static int qemu_s390_register_io_adapter(S390FLICState *fs, uint32_t id,
uint8_t isc, bool swap,
- bool is_maskable)
+ bool is_maskable, uint8_t flags)
{
/* nothing to do */
return 0;
static int qemu_s390_clear_io_flic(S390FLICState *fs, uint16_t subchannel_id,
uint16_t subchannel_nr)
{
- /* Fixme TCG */
- return -ENOSYS;
+ QEMUS390FLICState *flic = s390_get_qemu_flic(fs);
+ QEMUS390FlicIO *cur, *next;
+ uint8_t isc;
+
+ g_assert(qemu_mutex_iothread_locked());
+ if (!(flic->pending & FLIC_PENDING_IO)) {
+ return 0;
+ }
+
+ /* check all iscs */
+ for (isc = 0; isc < 8; isc++) {
+ if (QLIST_EMPTY(&flic->io[isc])) {
+ continue;
+ }
+
+ /* search and delete any matching one */
+ QLIST_FOREACH_SAFE(cur, &flic->io[isc], next, next) {
+ if (cur->id == subchannel_id && cur->nr == subchannel_nr) {
+ QLIST_REMOVE(cur, next);
+ g_free(cur);
+ }
+ }
+
+ /* update our indicator bit */
+ if (QLIST_EMPTY(&flic->io[isc])) {
+ flic->pending &= ~ISC_TO_PENDING_IO(isc);
+ }
+ }
+ return 0;
+}
+
+static int qemu_s390_modify_ais_mode(S390FLICState *fs, uint8_t isc,
+ uint16_t mode)
+{
+ QEMUS390FLICState *flic = s390_get_qemu_flic(fs);
+
+ switch (mode) {
+ case SIC_IRQ_MODE_ALL:
+ flic->simm &= ~AIS_MODE_MASK(isc);
+ flic->nimm &= ~AIS_MODE_MASK(isc);
+ break;
+ case SIC_IRQ_MODE_SINGLE:
+ flic->simm |= AIS_MODE_MASK(isc);
+ flic->nimm &= ~AIS_MODE_MASK(isc);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int qemu_s390_inject_airq(S390FLICState *fs, uint8_t type,
+ uint8_t isc, uint8_t flags)
+{
+ QEMUS390FLICState *flic = s390_get_qemu_flic(fs);
+ S390FLICStateClass *fsc = s390_get_flic_class(fs);
+ bool flag = flags & S390_ADAPTER_SUPPRESSIBLE;
+ uint32_t io_int_word = (isc << 27) | IO_INT_WORD_AI;
+
+ if (flag && (flic->nimm & AIS_MODE_MASK(isc))) {
+ trace_qemu_s390_airq_suppressed(type, isc);
+ return 0;
+ }
+
+ fsc->inject_io(fs, 0, 0, 0, io_int_word);
+
+ if (flag && (flic->simm & AIS_MODE_MASK(isc))) {
+ flic->nimm |= AIS_MODE_MASK(isc);
+ trace_qemu_s390_suppress_airq(isc, "Single-Interruption Mode",
+ "NO-Interruptions Mode");
+ }
+
+ return 0;
+}
+
+static void qemu_s390_flic_notify(uint32_t type)
+{
+ CPUState *cs;
+
+ /*
+ * We have to make all CPUs see CPU_INTERRUPT_HARD, so they might
+ * consider it. We will kick all running CPUs and only relevant
+ * sleeping ones.
+ */
+ CPU_FOREACH(cs) {
+ S390CPU *cpu = S390_CPU(cs);
+
+ cs->interrupt_request |= CPU_INTERRUPT_HARD;
+
+ /* ignore CPUs that are not sleeping */
+ if (s390_cpu_get_state(cpu) != S390_CPU_STATE_OPERATING &&
+ s390_cpu_get_state(cpu) != S390_CPU_STATE_LOAD) {
+ continue;
+ }
+
+ /* we always kick running CPUs for now, this is tricky */
+ if (cs->halted) {
+ /* don't check for subclasses, CPUs double check when waking up */
+ if (type & FLIC_PENDING_SERVICE) {
+ if (!(cpu->env.psw.mask & PSW_MASK_EXT)) {
+ continue;
+ }
+ } else if (type & FLIC_PENDING_IO) {
+ if (!(cpu->env.psw.mask & PSW_MASK_IO)) {
+ continue;
+ }
+ } else if (type & FLIC_PENDING_MCHK_CR) {
+ if (!(cpu->env.psw.mask & PSW_MASK_MCHECK)) {
+ continue;
+ }
+ }
+ }
+ cpu_interrupt(cs, CPU_INTERRUPT_HARD);
+ }
+}
+
+uint32_t qemu_s390_flic_dequeue_service(QEMUS390FLICState *flic)
+{
+ uint32_t tmp;
+
+ g_assert(qemu_mutex_iothread_locked());
+ g_assert(flic->pending & FLIC_PENDING_SERVICE);
+ tmp = flic->service_param;
+ flic->service_param = 0;
+ flic->pending &= ~FLIC_PENDING_SERVICE;
+
+ return tmp;
+}
+
+/* caller has to free the returned object */
+QEMUS390FlicIO *qemu_s390_flic_dequeue_io(QEMUS390FLICState *flic, uint64_t cr6)
+{
+ QEMUS390FlicIO *io;
+ uint8_t isc;
+
+ g_assert(qemu_mutex_iothread_locked());
+ if (!(flic->pending & CR6_TO_PENDING_IO(cr6))) {
+ return NULL;
+ }
+
+ for (isc = 0; isc < 8; isc++) {
+ if (QLIST_EMPTY(&flic->io[isc]) || !(cr6 & ISC_TO_ISC_BITS(isc))) {
+ continue;
+ }
+ io = QLIST_FIRST(&flic->io[isc]);
+ QLIST_REMOVE(io, next);
+
+ /* update our indicator bit */
+ if (QLIST_EMPTY(&flic->io[isc])) {
+ flic->pending &= ~ISC_TO_PENDING_IO(isc);
+ }
+ return io;
+ }
+
+ return NULL;
+}
+
+void qemu_s390_flic_dequeue_crw_mchk(QEMUS390FLICState *flic)
+{
+ g_assert(qemu_mutex_iothread_locked());
+ g_assert(flic->pending & FLIC_PENDING_MCHK_CR);
+ flic->pending &= ~FLIC_PENDING_MCHK_CR;
+}
+
+static void qemu_s390_inject_service(S390FLICState *fs, uint32_t parm)
+{
+ QEMUS390FLICState *flic = s390_get_qemu_flic(fs);
+
+ g_assert(qemu_mutex_iothread_locked());
+ /* multiplexing is good enough for sclp - kvm does it internally as well */
+ flic->service_param |= parm;
+ flic->pending |= FLIC_PENDING_SERVICE;
+
+ qemu_s390_flic_notify(FLIC_PENDING_SERVICE);
+}
+
+static void qemu_s390_inject_io(S390FLICState *fs, uint16_t subchannel_id,
+ uint16_t subchannel_nr, uint32_t io_int_parm,
+ uint32_t io_int_word)
+{
+ const uint8_t isc = IO_INT_WORD_ISC(io_int_word);
+ QEMUS390FLICState *flic = s390_get_qemu_flic(fs);
+ QEMUS390FlicIO *io;
+
+ g_assert(qemu_mutex_iothread_locked());
+ io = g_new0(QEMUS390FlicIO, 1);
+ io->id = subchannel_id;
+ io->nr = subchannel_nr;
+ io->parm = io_int_parm;
+ io->word = io_int_word;
+
+ QLIST_INSERT_HEAD(&flic->io[isc], io, next);
+ flic->pending |= ISC_TO_PENDING_IO(isc);
+
+ qemu_s390_flic_notify(ISC_TO_PENDING_IO(isc));
+}
+
+static void qemu_s390_inject_crw_mchk(S390FLICState *fs)
+{
+ QEMUS390FLICState *flic = s390_get_qemu_flic(fs);
+
+ g_assert(qemu_mutex_iothread_locked());
+ flic->pending |= FLIC_PENDING_MCHK_CR;
+
+ qemu_s390_flic_notify(FLIC_PENDING_MCHK_CR);
+}
+
+bool qemu_s390_flic_has_service(QEMUS390FLICState *flic)
+{
+ /* called without lock via cc->has_work, will be validated under lock */
+ return !!(flic->pending & FLIC_PENDING_SERVICE);
+}
+
+bool qemu_s390_flic_has_io(QEMUS390FLICState *flic, uint64_t cr6)
+{
+ /* called without lock via cc->has_work, will be validated under lock */
+ return !!(flic->pending & CR6_TO_PENDING_IO(cr6));
+}
+
+bool qemu_s390_flic_has_crw_mchk(QEMUS390FLICState *flic)
+{
+ /* called without lock via cc->has_work, will be validated under lock */
+ return !!(flic->pending & FLIC_PENDING_MCHK_CR);
+}
+
+bool qemu_s390_flic_has_any(QEMUS390FLICState *flic)
+{
+ g_assert(qemu_mutex_iothread_locked());
+ return !!flic->pending;
+}
+
+static void qemu_s390_flic_reset(DeviceState *dev)
+{
+ QEMUS390FLICState *flic = QEMU_S390_FLIC(dev);
+ QEMUS390FlicIO *cur, *next;
+ int isc;
+
+ g_assert(qemu_mutex_iothread_locked());
+ flic->simm = 0;
+ flic->nimm = 0;
+ flic->pending = 0;
+
+ /* remove all pending io interrupts */
+ for (isc = 0; isc < 8; isc++) {
+ QLIST_FOREACH_SAFE(cur, &flic->io[isc], next, next) {
+ QLIST_REMOVE(cur, next);
+ g_free(cur);
+ }
+ }
+}
+
+bool ais_needed(void *opaque)
+{
+ S390FLICState *s = opaque;
+
+ return s->ais_supported;
+}
+
+static const VMStateDescription qemu_s390_flic_vmstate = {
+ .name = "qemu-s390-flic",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .needed = ais_needed,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT8(simm, QEMUS390FLICState),
+ VMSTATE_UINT8(nimm, QEMUS390FLICState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void qemu_s390_flic_instance_init(Object *obj)
+{
+ QEMUS390FLICState *flic = QEMU_S390_FLIC(obj);
+ int isc;
+
+ for (isc = 0; isc < 8; isc++) {
+ QLIST_INIT(&flic->io[isc]);
+ }
}
static void qemu_s390_flic_class_init(ObjectClass *oc, void *data)
{
+ DeviceClass *dc = DEVICE_CLASS(oc);
S390FLICStateClass *fsc = S390_FLIC_COMMON_CLASS(oc);
+ dc->reset = qemu_s390_flic_reset;
+ dc->vmsd = &qemu_s390_flic_vmstate;
fsc->register_io_adapter = qemu_s390_register_io_adapter;
fsc->io_adapter_map = qemu_s390_io_adapter_map;
fsc->add_adapter_routes = qemu_s390_add_adapter_routes;
fsc->release_adapter_routes = qemu_s390_release_adapter_routes;
fsc->clear_io_irq = qemu_s390_clear_io_flic;
+ fsc->modify_ais_mode = qemu_s390_modify_ais_mode;
+ fsc->inject_airq = qemu_s390_inject_airq;
+ fsc->inject_service = qemu_s390_inject_service;
+ fsc->inject_io = qemu_s390_inject_io;
+ fsc->inject_crw_mchk = qemu_s390_inject_crw_mchk;
+}
+
+static Property s390_flic_common_properties[] = {
+ DEFINE_PROP_UINT32("adapter_routes_max_batch", S390FLICState,
+ adapter_routes_max_batch, ADAPTER_ROUTES_MAX_GSI),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void s390_flic_common_realize(DeviceState *dev, Error **errp)
+{
+ S390FLICState *fs = S390_FLIC_COMMON(dev);
+ uint32_t max_batch = fs->adapter_routes_max_batch;
+
+ if (max_batch > ADAPTER_ROUTES_MAX_GSI) {
+ error_setg(errp, "flic property adapter_routes_max_batch too big"
+ " (%d > %d)", max_batch, ADAPTER_ROUTES_MAX_GSI);
+ return;
+ }
+
+ fs->ais_supported = s390_has_feat(S390_FEAT_ADAPTER_INT_SUPPRESSION);
+}
+
+static void s390_flic_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+
+ device_class_set_props(dc, s390_flic_common_properties);
+ dc->realize = s390_flic_common_realize;
}
static const TypeInfo qemu_s390_flic_info = {
.name = TYPE_QEMU_S390_FLIC,
.parent = TYPE_S390_FLIC_COMMON,
.instance_size = sizeof(QEMUS390FLICState),
+ .instance_init = qemu_s390_flic_instance_init,
.class_init = qemu_s390_flic_class_init,
};
+
static const TypeInfo s390_flic_common_info = {
.name = TYPE_S390_FLIC_COMMON,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(S390FLICState),
+ .class_init = s390_flic_class_init,
.class_size = sizeof(S390FLICStateClass),
};
}
type_init(qemu_s390_flic_register_types)
+
+static bool adapter_info_so_needed(void *opaque)
+{
+ return css_migration_enabled();
+}
+
+const VMStateDescription vmstate_adapter_info_so = {
+ .name = "s390_adapter_info/summary_offset",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .needed = adapter_info_so_needed,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(summary_offset, AdapterInfo),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+const VMStateDescription vmstate_adapter_info = {
+ .name = "s390_adapter_info",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT64(ind_offset, AdapterInfo),
+ /*
+ * We do not have to migrate neither the id nor the addresses.
+ * The id is set by css_register_io_adapter and the addresses
+ * are set based on the IndAddr objects after those get mapped.
+ */
+ VMSTATE_END_OF_LIST()
+ },
+ .subsections = (const VMStateDescription * []) {
+ &vmstate_adapter_info_so,
+ NULL
+ }
+};
+
+const VMStateDescription vmstate_adapter_routes = {
+
+ .name = "s390_adapter_routes",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_STRUCT(adapter, AdapterRoutes, 1, vmstate_adapter_info,
+ AdapterInfo),
+ VMSTATE_END_OF_LIST()
+ }
+};
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