blob: 3c20cd208da59e3bf78d4343447d3bb632a57a30 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
/* 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
|
