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charset="utf-8" These functions can be invoked by the function that handles interception of the CHSC SEI instruction for requests indicating the accessibility of one or more adjunct processors has changed. Signed-off-by: Rorie Reyes --- hw/vfio/ap.c | 37 ++++++++++++++++++++++++++++++++++++ include/hw/s390x/ap-bridge.h | 17 +++++++++++++++++ 2 files changed, 54 insertions(+) diff --git a/hw/vfio/ap.c b/hw/vfio/ap.c index 508c6eed7a..9d1e18f100 100644 --- a/hw/vfio/ap.c +++ b/hw/vfio/ap.c @@ -94,6 +94,43 @@ static void vfio_ap_cfg_chg_notifier_handler(void *opaqu= e) css_generate_css_crws(0); } =20 +int ap_chsc_sei_nt0_get_event(void *res) +{ + APConfigChgEvent *cfg_chg_event =3D QTAILQ_FIRST(&cfg_chg_events); + ChscSeiNt0Res *nt0_res =3D (ChscSeiNt0Res *)res; + memset(nt0_res, 0, sizeof(*nt0_res)); + int rc =3D 1; + + if (cfg_chg_event) { + QTAILQ_REMOVE(&cfg_chg_events, cfg_chg_event, next); + free(cfg_chg_event); + + /* + * If there are any AP configuration change events in the queue, + * indicate to the caller that there is pending event info in + * the response block + */ + if (!QTAILQ_EMPTY(&cfg_chg_events)) { + nt0_res->flags |=3D PENDING_EVENT_INFO_BITMASK; + } + + nt0_res->length =3D sizeof(ChscSeiNt0Res); + nt0_res->code =3D 1; + nt0_res->nt =3D 0; + nt0_res->rs =3D 5; + nt0_res->cc =3D 3; + + rc =3D 0; + } + + return rc; +} + +int ap_chsc_sei_nt0_have_event(void) +{ + return !QTAILQ_EMPTY(&cfg_chg_events); +} + static bool vfio_ap_register_irq_notifier(VFIOAPDevice *vapdev, unsigned int irq, Error **errp) { diff --git a/include/hw/s390x/ap-bridge.h b/include/hw/s390x/ap-bridge.h index 470e439a98..c9beec3db4 100644 --- a/include/hw/s390x/ap-bridge.h +++ b/include/hw/s390x/ap-bridge.h @@ -16,4 +16,21 @@ =20 void s390_init_ap(void); =20 +typedef struct ChscSeiNt0Res { + uint16_t length; + uint16_t code; + uint8_t reserved1; + uint16_t reserved2; + uint8_t nt; +#define PENDING_EVENT_INFO_BITMASK 0x80; + uint8_t flags; + uint8_t reserved3; + uint8_t rs; + uint8_t cc; +} QEMU_PACKED ChscSeiNt0Res; + +int ap_chsc_sei_nt0_get_event(void *res); + +int ap_chsc_sei_nt0_have_event(void); + #endif --=20 2.39.5 (Apple Git-154)