blob: a4b74fb1aa5741e5bf65c8e3be55b85c2772d03d [file] [log] [blame]
/* SPDX-License-Identifier: GPL-2.0 */
* channel program interfaces
* Copyright IBM Corp. 2017
* Author(s): Dong Jia Shi <>
* Xiao Feng Ren <>
#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
* @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;
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);