diff options
Diffstat (limited to 'drivers/s390/cio/vfio_ccw_cp.h')
| -rw-r--r-- | drivers/s390/cio/vfio_ccw_cp.h | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/drivers/s390/cio/vfio_ccw_cp.h b/drivers/s390/cio/vfio_ccw_cp.h index 7a1996b3b36d..fc31eb699807 100644 --- a/drivers/s390/cio/vfio_ccw_cp.h +++ b/drivers/s390/cio/vfio_ccw_cp.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * channel program interfaces * @@ -14,12 +15,19 @@ #include <asm/scsw.h> #include "orb.h" +#include "vfio_ccw_trace.h" + +/* + * Max length for ccw chain. + * XXX: Limit to 256, need to check more? + */ +#define CCWCHAIN_LEN_MAX 256 /** * struct channel_program - manage information for channel program * @ccwchain_list: list head of ccwchains * @orb: orb for the currently processed ssch request - * @mdev: the mediated device to perform page pinning/unpinning + * @initialized: whether this instance is actually initialized * * @ccwchain_list is the head of a ccwchain list, that contents the * translated result of the guest channel program that pointed out by @@ -28,15 +36,15 @@ struct channel_program { struct list_head ccwchain_list; union orb orb; - struct device *mdev; + bool initialized; + struct ccw1 *guest_cp; }; -extern int cp_init(struct channel_program *cp, struct device *mdev, - union orb *orb); -extern void cp_free(struct channel_program *cp); -extern int cp_prefetch(struct channel_program *cp); -extern union orb *cp_get_orb(struct channel_program *cp, u32 intparm, u8 lpm); -extern void cp_update_scsw(struct channel_program *cp, union scsw *scsw); -extern bool cp_iova_pinned(struct channel_program *cp, u64 iova); +int cp_init(struct channel_program *cp, union orb *orb); +void cp_free(struct channel_program *cp); +int cp_prefetch(struct channel_program *cp); +union orb *cp_get_orb(struct channel_program *cp, struct subchannel *sch); +void cp_update_scsw(struct channel_program *cp, union scsw *scsw); +bool cp_iova_pinned(struct channel_program *cp, u64 iova, u64 length); #endif |