diff options
Diffstat (limited to 'hw/intc/s390_flic.c')
| -rw-r--r-- | hw/intc/s390_flic.c | 107 |
1 files changed, 105 insertions, 2 deletions
diff --git a/hw/intc/s390_flic.c b/hw/intc/s390_flic.c index 837158bdaf..6eaf178d79 100644 --- a/hw/intc/s390_flic.c +++ b/hw/intc/s390_flic.c @@ -13,8 +13,11 @@ #include "qemu/osdep.h" #include "qemu/error-report.h" #include "hw/sysbus.h" +#include "hw/s390x/ioinst.h" #include "hw/s390x/s390_flic.h" +#include "hw/s390x/css.h" #include "trace.h" +#include "cpu.h" #include "hw/qdev.h" #include "qapi/error.h" #include "hw/s390x/s390-virtio-ccw.h" @@ -48,7 +51,7 @@ void s390_flic_init(void) 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; @@ -79,15 +82,91 @@ static int qemu_s390_clear_io_flic(S390FLICState *fs, uint16_t subchannel_id, return -ENOSYS; } +static int qemu_s390_modify_ais_mode(S390FLICState *fs, uint8_t isc, + uint16_t mode) +{ + QEMUS390FLICState *flic = QEMU_S390_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 = QEMU_S390_FLIC(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; + } + + s390_io_interrupt(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_reset(DeviceState *dev) +{ + QEMUS390FLICState *flic = QEMU_S390_FLIC(dev); + + flic->simm = 0; + flic->nimm = 0; +} + +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_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; } static Property s390_flic_common_properties[] = { @@ -98,12 +177,16 @@ static Property s390_flic_common_properties[] = { static void s390_flic_common_realize(DeviceState *dev, Error **errp) { - uint32_t max_batch = S390_FLIC_COMMON(dev)->adapter_routes_max_batch; + 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) @@ -138,6 +221,22 @@ static void qemu_s390_flic_register_types(void) 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, @@ -151,6 +250,10 @@ const VMStateDescription vmstate_adapter_info = { */ VMSTATE_END_OF_LIST() }, + .subsections = (const VMStateDescription * []) { + &vmstate_adapter_info_so, + NULL + } }; const VMStateDescription vmstate_adapter_routes = { |