1 /* 2 * channel program interfaces 3 * 4 * Copyright IBM Corp. 2017 5 * 6 * Author(s): Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> 7 * Xiao Feng Ren <renxiaof@linux.vnet.ibm.com> 8 */ 9 10 #ifndef _VFIO_CCW_CP_H_ 11 #define _VFIO_CCW_CP_H_ 12 13 #include <asm/cio.h> 14 #include <asm/scsw.h> 15 16 #include "orb.h" 17 18 /** 19 * struct channel_program - manage information for channel program 20 * @ccwchain_list: list head of ccwchains 21 * @orb: orb for the currently processed ssch request 22 * @mdev: the mediated device to perform page pinning/unpinning 23 * 24 * @ccwchain_list is the head of a ccwchain list, that contents the 25 * translated result of the guest channel program that pointed out by 26 * the iova parameter when calling cp_init. 27 */ 28 struct channel_program { 29 struct list_head ccwchain_list; 30 union orb orb; 31 struct device *mdev; 32 }; 33 34 extern int cp_init(struct channel_program *cp, struct device *mdev, 35 union orb *orb); 36 extern void cp_free(struct channel_program *cp); 37 extern int cp_prefetch(struct channel_program *cp); 38 extern union orb *cp_get_orb(struct channel_program *cp, u32 intparm, u8 lpm); 39 extern void cp_update_scsw(struct channel_program *cp, union scsw *scsw); 40 extern bool cp_iova_pinned(struct channel_program *cp, u64 iova); 41 42 #endif 43