/* SPDX-License-Identifier: GPL-2.0 */ /* * channel program interfaces * * Copyright IBM Corp. 2017 * * Author(s): Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> * Xiao Feng Ren <renxiaof@linux.vnet.ibm.com> */ #ifndef _VFIO_CCW_CP_H_ #define _VFIO_CCW_CP_H_ #include <asm/cio.h> #include <asm/scsw.h> #include "orb.h" /** * 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 * the iova parameter when calling cp_init. */ struct channel_program { struct list_head ccwchain_list; union orb orb; struct device *mdev; bool initialized; }; 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); #endif