projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 0a19e61e DJS |
2 | /* |
| 3 | * channel program interfaces | |
| 4 | * | |
| 5 | * Copyright IBM Corp. 2017 | |
| 6 | * | |
| 7 | * Author(s): Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> | |
| 8 | * Xiao Feng Ren <renxiaof@linux.vnet.ibm.com> | |
| 9 | */ | |
| 10 | ||
| 11 | #ifndef _VFIO_CCW_CP_H_ | |
| 12 | #define _VFIO_CCW_CP_H_ | |
| 13 | ||
| 14 | #include <asm/cio.h> | |
| 15 | #include <asm/scsw.h> | |
| 16 | ||
| 17 | #include "orb.h" | |
| 18 | ||
| 19 | /** | |
| 20 | * struct channel_program - manage information for channel program | |
| 21 | * @ccwchain_list: list head of ccwchains | |
| 22 | * @orb: orb for the currently processed ssch request | |
| 23 | * @mdev: the mediated device to perform page pinning/unpinning | |
| 24 | * | |
| 25 | * @ccwchain_list is the head of a ccwchain list, that contents the | |
| 26 | * translated result of the guest channel program that pointed out by | |
| 27 | * the iova parameter when calling cp_init. | |
| 28 | */ | |
| 29 | struct channel_program { | |
| 30 | struct list_head ccwchain_list; | |
| 31 | union orb orb; | |
| 32 | struct device *mdev; | |
| 33 | }; | |
| 34 | ||
| 35 | extern int cp_init(struct channel_program *cp, struct device *mdev, | |
| 36 | union orb *orb); | |
| 37 | extern void cp_free(struct channel_program *cp); | |
| 38 | extern int cp_prefetch(struct channel_program *cp); | |
| 39 | extern union orb *cp_get_orb(struct channel_program *cp, u32 intparm, u8 lpm); | |
| 40 | extern void cp_update_scsw(struct channel_program *cp, union scsw *scsw); | |
| 41 | extern bool cp_iova_pinned(struct channel_program *cp, u64 iova); | |
| 42 | ||
| 43 | #endif |