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0a19e61e DJS |
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 |