4f67d30b5e
The following patch will need to handle properties registration during class_init time. Let's use a device_class_set_props() setter. spatch --macro-file scripts/cocci-macro-file.h --sp-file ./scripts/coccinelle/qdev-set-props.cocci --keep-comments --in-place --dir . @@ typedef DeviceClass; DeviceClass *d; expression val; @@ - d->props = val + device_class_set_props(d, val) Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20200110153039.1379601-20-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
505 lines
14 KiB
C
505 lines
14 KiB
C
/*
|
|
* QEMU S390x floating interrupt controller (flic)
|
|
*
|
|
* Copyright 2014 IBM Corp.
|
|
* Author(s): Jens Freimann <jfrei@linux.vnet.ibm.com>
|
|
* 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 "qemu/error-report.h"
|
|
#include "qemu/main-loop.h"
|
|
#include "qemu/module.h"
|
|
#include "hw/sysbus.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)
|
|
{
|
|
static S390FLICState *fs;
|
|
|
|
if (!fs) {
|
|
fs = S390_FLIC_COMMON(object_resolve_path_type("",
|
|
TYPE_S390_FLIC_COMMON,
|
|
NULL));
|
|
}
|
|
return fs;
|
|
}
|
|
|
|
void s390_flic_init(void)
|
|
{
|
|
DeviceState *dev;
|
|
|
|
if (kvm_enabled()) {
|
|
dev = qdev_create(NULL, TYPE_KVM_S390_FLIC);
|
|
object_property_add_child(qdev_get_machine(), TYPE_KVM_S390_FLIC,
|
|
OBJECT(dev), NULL);
|
|
} else {
|
|
dev = qdev_create(NULL, TYPE_QEMU_S390_FLIC);
|
|
object_property_add_child(qdev_get_machine(), TYPE_QEMU_S390_FLIC,
|
|
OBJECT(dev), NULL);
|
|
}
|
|
qdev_init_nofail(dev);
|
|
}
|
|
|
|
static int qemu_s390_register_io_adapter(S390FLICState *fs, uint32_t id,
|
|
uint8_t isc, bool swap,
|
|
bool is_maskable, uint8_t flags)
|
|
{
|
|
/* nothing to do */
|
|
return 0;
|
|
}
|
|
|
|
static int qemu_s390_io_adapter_map(S390FLICState *fs, uint32_t id,
|
|
uint64_t map_addr, bool do_map)
|
|
{
|
|
/* nothing to do */
|
|
return 0;
|
|
}
|
|
|
|
static int qemu_s390_add_adapter_routes(S390FLICState *fs,
|
|
AdapterRoutes *routes)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static void qemu_s390_release_adapter_routes(S390FLICState *fs,
|
|
AdapterRoutes *routes)
|
|
{
|
|
}
|
|
|
|
static int qemu_s390_clear_io_flic(S390FLICState *fs, uint16_t subchannel_id,
|
|
uint16_t subchannel_nr)
|
|
{
|
|
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),
|
|
};
|
|
|
|
static void qemu_s390_flic_register_types(void)
|
|
{
|
|
type_register_static(&s390_flic_common_info);
|
|
type_register_static(&qemu_s390_flic_info);
|
|
}
|
|
|
|
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()
|
|
}
|
|
};
|