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| author |   Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> | 2017-03-17 04:17:38 +0100 |
|---|---|---|
| committer |   Cornelia Huck <cornelia.huck@de.ibm.com> | 2017-03-31 12:55:09 +0200 |
| commit | 120e214e504fd6d3e33ec4b661193600b2faab95 (patch) | |
| tree | 781dcb51968c9f6e3860570b177a73306add0a47 /drivers/s390/cio/vfio_ccw_private.h | |
| parent | vfio: ccw: realize VFIO_DEVICE_RESET ioctl (diff) | |
| download | linux-dev-120e214e504fd6d3e33ec4b661193600b2faab95.tar.xz linux-dev-120e214e504fd6d3e33ec4b661193600b2faab95.zip | |
vfio: ccw: realize VFIO_DEVICE_G(S)ET_IRQ_INFO ioctls
Realize VFIO_DEVICE_GET_IRQ_INFO ioctl to retrieve
VFIO_CCW_IO_IRQ information.
Realize VFIO_DEVICE_SET_IRQS ioctl to set an eventfd fd for
VFIO_CCW_IO_IRQ. Once a write operation to the ccw_io_region
was performed, trigger a signal on this fd.
Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Message-Id: <20170317031743.40128-12-bjsdjshi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/vfio_ccw_private.h')
| -rw-r--r-- | drivers/s390/cio/vfio_ccw_private.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/s390/cio/vfio_ccw_private.h b/drivers/s390/cio/vfio_ccw_private.h index 79e53378f212..dddab52913ed 100644 --- a/drivers/s390/cio/vfio_ccw_private.h +++ b/drivers/s390/cio/vfio_ccw_private.h @@ -11,6 +11,7 @@ #define _VFIO_CCW_PRIVATE_H_ #include <linux/completion.h> +#include <linux/eventfd.h> #include <linux/vfio_ccw.h> #include "css.h" @@ -29,6 +30,7 @@ * @cp: channel program for the current I/O operation * @irb: irb info received from interrupt * @scsw: scsw info + * @io_trigger: eventfd ctx for signaling userspace I/O results */ struct vfio_ccw_private { struct subchannel *sch; @@ -43,6 +45,8 @@ struct vfio_ccw_private { struct channel_program cp; struct irb irb; union scsw scsw; + + struct eventfd_ctx *io_trigger; } __aligned(8); extern int vfio_ccw_mdev_reg(struct subchannel *sch); |