mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
53 lines
1.5 KiB
53 lines
1.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
/* |
|
* channel program interfaces |
|
* |
|
* Copyright IBM Corp. 2017 |
|
* |
|
* Author(s): Dong Jia Shi <[email protected]> |
|
* Xiao Feng Ren <[email protected]> |
|
*/ |
|
|
|
#ifndef _VFIO_CCW_CP_H_ |
|
#define _VFIO_CCW_CP_H_ |
|
|
|
#include <asm/cio.h> |
|
#include <asm/scsw.h> |
|
|
|
#include "orb.h" |
|
#include "vfio_ccw_trace.h" |
|
|
|
/* |
|
* Max length for ccw chain. |
|
* XXX: Limit to 256, need to check more? |
|
*/ |
|
#define CCWCHAIN_LEN_MAX 256 |
|
|
|
/** |
|
* 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; |
|
struct ccw1 *guest_cp; |
|
}; |
|
|
|
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
|
|
|