diff options
Diffstat (limited to 'drivers/s390/cio/vfio_ccw_fsm.c')
| -rw-r--r-- | drivers/s390/cio/vfio_ccw_fsm.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/s390/cio/vfio_ccw_fsm.c b/drivers/s390/cio/vfio_ccw_fsm.c index 88e529a2e184..2811b2040490 100644 --- a/drivers/s390/cio/vfio_ccw_fsm.c +++ b/drivers/s390/cio/vfio_ccw_fsm.c @@ -11,6 +11,8 @@ #include <linux/vfio.h> +#include <asm/isc.h> + #include "ioasm.h" #include "vfio_ccw_private.h" @@ -368,6 +370,20 @@ static void fsm_irq(struct vfio_ccw_private *private, complete(private->completion); } +static void fsm_open(struct vfio_ccw_private *private, + enum vfio_ccw_event event) +{ + struct subchannel *sch = private->sch; + int ret; + + spin_lock_irq(sch->lock); + sch->isc = VFIO_CCW_ISC; + ret = cio_enable_subchannel(sch, (u32)(unsigned long)sch); + if (!ret) + private->state = VFIO_CCW_STATE_STANDBY; + spin_unlock_irq(sch->lock); +} + /* * Device statemachine */ @@ -377,29 +393,34 @@ fsm_func_t *vfio_ccw_jumptable[NR_VFIO_CCW_STATES][NR_VFIO_CCW_EVENTS] = { [VFIO_CCW_EVENT_IO_REQ] = fsm_io_error, [VFIO_CCW_EVENT_ASYNC_REQ] = fsm_async_error, [VFIO_CCW_EVENT_INTERRUPT] = fsm_disabled_irq, + [VFIO_CCW_EVENT_OPEN] = fsm_open, }, [VFIO_CCW_STATE_STANDBY] = { [VFIO_CCW_EVENT_NOT_OPER] = fsm_notoper, [VFIO_CCW_EVENT_IO_REQ] = fsm_io_error, [VFIO_CCW_EVENT_ASYNC_REQ] = fsm_async_error, [VFIO_CCW_EVENT_INTERRUPT] = fsm_irq, + [VFIO_CCW_EVENT_OPEN] = fsm_notoper, }, [VFIO_CCW_STATE_IDLE] = { [VFIO_CCW_EVENT_NOT_OPER] = fsm_notoper, [VFIO_CCW_EVENT_IO_REQ] = fsm_io_request, [VFIO_CCW_EVENT_ASYNC_REQ] = fsm_async_request, [VFIO_CCW_EVENT_INTERRUPT] = fsm_irq, + [VFIO_CCW_EVENT_OPEN] = fsm_notoper, }, [VFIO_CCW_STATE_CP_PROCESSING] = { [VFIO_CCW_EVENT_NOT_OPER] = fsm_notoper, [VFIO_CCW_EVENT_IO_REQ] = fsm_io_retry, [VFIO_CCW_EVENT_ASYNC_REQ] = fsm_async_retry, [VFIO_CCW_EVENT_INTERRUPT] = fsm_irq, + [VFIO_CCW_EVENT_OPEN] = fsm_notoper, }, [VFIO_CCW_STATE_CP_PENDING] = { [VFIO_CCW_EVENT_NOT_OPER] = fsm_notoper, [VFIO_CCW_EVENT_IO_REQ] = fsm_io_busy, [VFIO_CCW_EVENT_ASYNC_REQ] = fsm_async_request, [VFIO_CCW_EVENT_INTERRUPT] = fsm_irq, + [VFIO_CCW_EVENT_OPEN] = fsm_notoper, }, }; |