diff options
Diffstat (limited to 'drivers/s390/crypto/vfio_ap_private.h')
| -rw-r--r-- | drivers/s390/crypto/vfio_ap_private.h | 43 |
1 files changed, 31 insertions, 12 deletions
diff --git a/drivers/s390/crypto/vfio_ap_private.h b/drivers/s390/crypto/vfio_ap_private.h index 77760e2b546f..648fcaf8104a 100644 --- a/drivers/s390/crypto/vfio_ap_private.h +++ b/drivers/s390/crypto/vfio_ap_private.h @@ -26,16 +26,18 @@ #define VFIO_AP_DRV_NAME "vfio_ap" /** - * ap_matrix_dev - the AP matrix device structure + * struct ap_matrix_dev - Contains the data for the matrix device. + * * @device: generic device structure associated with the AP matrix device * @available_instances: number of mediated matrix devices that can be created * @info: the struct containing the output from the PQAP(QCI) instruction - * mdev_list: the list of mediated matrix devices created - * lock: mutex for locking the AP matrix device. This lock will be + * @mdev_list: the list of mediated matrix devices created + * @lock: mutex for locking the AP matrix device. This lock will be * taken every time we fiddle with state managed by the vfio_ap * driver, be it using @mdev_list or writing the state of a * single ap_matrix_mdev device. It's quite coarse but we don't * expect much contention. + * @vfio_ap_drv: the vfio_ap device driver */ struct ap_matrix_dev { struct device device; @@ -49,17 +51,19 @@ struct ap_matrix_dev { extern struct ap_matrix_dev *matrix_dev; /** - * The AP matrix is comprised of three bit masks identifying the adapters, - * queues (domains) and control domains that belong to an AP matrix. The bits i - * each mask, from least significant to most significant bit, correspond to IDs - * 0 to 255. When a bit is set, the corresponding ID belongs to the matrix. + * struct ap_matrix - matrix of adapters, domains and control domains * * @apm_max: max adapter number in @apm - * @apm identifies the AP adapters in the matrix + * @apm: identifies the AP adapters in the matrix * @aqm_max: max domain number in @aqm - * @aqm identifies the AP queues (domains) in the matrix + * @aqm: identifies the AP queues (domains) in the matrix * @adm_max: max domain number in @adm - * @adm identifies the AP control domains in the matrix + * @adm: identifies the AP control domains in the matrix + * + * The AP matrix is comprised of three bit masks identifying the adapters, + * queues (domains) and control domains that belong to an AP matrix. The bits in + * each mask, from left to right, correspond to IDs 0 to 255. When a bit is set + * the corresponding ID belongs to the matrix. */ struct ap_matrix { unsigned long apm_max; @@ -71,13 +75,20 @@ struct ap_matrix { }; /** - * struct ap_matrix_mdev - the mediated matrix device structure - * @list: allows the ap_matrix_mdev struct to be added to a list + * struct ap_matrix_mdev - Contains the data associated with a matrix mediated + * device. + * @vdev: the vfio device + * @node: allows the ap_matrix_mdev struct to be added to a list * @matrix: the adapters, usage domains and control domains assigned to the * mediated matrix device. * @group_notifier: notifier block used for specifying callback function for * handling the VFIO_GROUP_NOTIFY_SET_KVM event + * @iommu_notifier: notifier block used for specifying callback function for + * handling the VFIO_IOMMU_NOTIFY_DMA_UNMAP even * @kvm: the struct holding guest's state + * @pqap_hook: the function pointer to the interception handler for the + * PQAP(AQIC) instruction. + * @mdev: the mediated device */ struct ap_matrix_mdev { struct vfio_device vdev; @@ -90,6 +101,14 @@ struct ap_matrix_mdev { struct mdev_device *mdev; }; +/** + * struct vfio_ap_queue - contains the data associated with a queue bound to the + * vfio_ap device driver + * @matrix_mdev: the matrix mediated device + * @saved_pfn: the guest PFN pinned for the guest + * @apqn: the APQN of the AP queue device + * @saved_isc: the guest ISC registered with the GIB interface + */ struct vfio_ap_queue { struct ap_matrix_mdev *matrix_mdev; unsigned long saved_pfn; |