On Thu, 22 Nov 2018 18:11:14 +0100 Pierre Morel <[email protected]> wrote:
> We define two VFIO ioctl command to setup and clear > the AP Queues interrupt. > > Arguments passed by the guest are: > - the apqn, AP queue number > - the Notification by address > - the identifier of the previously associated adapter We have an extensible VFIO_DEVICE_SET_IRQS ioctl already, why does AP need its own? > Signed-off-by: Pierre Morel <[email protected]> > --- > include/uapi/linux/vfio.h | 25 +++++++++++++++++++++++++ > 1 file changed, 25 insertions(+) > > diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h > index 8131028..9a1b350 100644 > --- a/include/uapi/linux/vfio.h > +++ b/include/uapi/linux/vfio.h > @@ -866,6 +866,31 @@ struct vfio_iommu_spapr_tce_remove { > }; > #define VFIO_IOMMU_SPAPR_TCE_REMOVE _IO(VFIO_TYPE, VFIO_BASE + 20) > > +/** > + * VFIO_AP_SET_IRQ - _IOWR(VFIO_TYPE, VFIO_BASE + 21, struct vfio_ap_aqic) > + * > + * Setup IRQ for an AP Queue > + * @cmd contains the AP queue number (apqn) > + * @status receives the resulting status of the command > + * @nib is the Notification Indicator byte address > + * @adapter_id allows to retrieve the associated adapter > + */ > +struct vfio_ap_aqic { > + __u32 argsz; > + __u32 flags; > + /* out */ > + __u32 status; > + /* in */ > + __u32 adapter_id; > + __u64 nib; > + __u16 apqn; > + __u8 isc; > + __u8 reserved[5]; > +}; > +#define VFIO_AP_SET_IRQ _IO(VFIO_TYPE, VFIO_BASE + 21) > +#define VFIO_AP_CLEAR_IRQ _IO(VFIO_TYPE, VFIO_BASE + 22) > + > /* ***************************************************************** */ > > + > #endif /* _UAPIVFIO_H */
