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vfio-ccw: Refactor IRQ handlers 

To simplify future expansion.

Signed-off-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20200505122745.53208-6-farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
Eric Farman 2020-05-05 14:27:42 +02:00 committed by Cornelia Huck
parent 24c986748b
commit 4296151d23
1 changed files with 17 additions and 6 deletions
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23
drivers/s390/cio/vfio_ccw_ops.c
View File

@ -387,17 +387,21 @@ static int vfio_ccw_mdev_get_region_info(struct vfio_region_info *info,
static int vfio_ccw_mdev_get_irq_info(struct vfio_irq_info *info)
{
if (info->index != VFIO_CCW_IO_IRQ_INDEX)
switch (info->index) {
case VFIO_CCW_IO_IRQ_INDEX:
info->count = 1;
info->flags = VFIO_IRQ_INFO_EVENTFD;
break;
default:
return -EINVAL;
info->count = 1;
info->flags = VFIO_IRQ_INFO_EVENTFD;
}
return 0;
}
static int vfio_ccw_mdev_set_irqs(struct mdev_device *mdev,
uint32_t flags,
uint32_t index,
void __user *data)
{
struct vfio_ccw_private *private;
@ -407,7 +411,14 @@ static int vfio_ccw_mdev_set_irqs(struct mdev_device *mdev,
return -EINVAL;
private = dev_get_drvdata(mdev_parent_dev(mdev));
ctx = &private->io_trigger;
switch (index) {
case VFIO_CCW_IO_IRQ_INDEX:
ctx = &private->io_trigger;
break;
default:
return -EINVAL;
}
switch (flags & VFIO_IRQ_SET_DATA_TYPE_MASK) {
case VFIO_IRQ_SET_DATA_NONE:
@ -579,7 +590,7 @@ static ssize_t vfio_ccw_mdev_ioctl(struct mdev_device *mdev,
return ret;
data = (void __user *)(arg + minsz);
return vfio_ccw_mdev_set_irqs(mdev, hdr.flags, data);
return vfio_ccw_mdev_set_irqs(mdev, hdr.flags, hdr.index, data);
}
case VFIO_DEVICE_RESET:
return vfio_ccw_mdev_reset(mdev);