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s390x/virtio-ccw: Adapter interrupt support.

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Handle the new CCW_CMD_SET_IND_ADAPTER command enabling adapter interrupts
on guest request. When active, host->guest notifications will be handled
via global_indicator -> queue indicators instead of queue indicators +
subchannel I/O interrupt. Indicators for virtqueues may be present at an
offset.

Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Cornelia Huck 2013-02-06 10:31:37 +01:00
parent f55ea6297c
commit 7e7494627f
7 changed files with 120 additions and 9 deletions
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4
hw/s390x/virtio-ccw.h
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@ -38,6 +38,7 @@
#define CCW_CMD_SET_IND 0x43
#define CCW_CMD_SET_CONF_IND 0x53
#define CCW_CMD_READ_VQ_CONF 0x32
#define CCW_CMD_SET_IND_ADAPTER 0x73
#define TYPE_VIRTIO_CCW_DEVICE "virtio-ccw-device"
#define VIRTIO_CCW_DEVICE(obj) \
@ -83,9 +84,12 @@ struct VirtioCcwDevice {
bool ioeventfd_started;
bool ioeventfd_disabled;
uint32_t flags;
uint8_t thinint_isc;
/* Guest provided values: */
hwaddr indicators;
hwaddr indicators2;
hwaddr summary_indicator;
uint64_t ind_bit;
};
/* virtual css bus type */