1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2/* 3 * Interfaces for vfio-ccw 4 * 5 * Copyright IBM Corp. 2017 6 * 7 * Author(s): Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> 8 */ 9 10#ifndef _VFIO_CCW_H_ 11#define _VFIO_CCW_H_ 12 13#include <linux/types.h> 14 15/* used for START SUBCHANNEL, always present */ 16struct ccw_io_region { 17#define ORB_AREA_SIZE 12 18 __u8 orb_area[ORB_AREA_SIZE]; 19#define SCSW_AREA_SIZE 12 20 __u8 scsw_area[SCSW_AREA_SIZE]; 21#define IRB_AREA_SIZE 96 22 __u8 irb_area[IRB_AREA_SIZE]; 23 __u32 ret_code; 24} __attribute__((packed)); 25 26/* 27 * used for processing commands that trigger asynchronous actions 28 * Note: this is controlled by a capability 29 */ 30#define VFIO_CCW_ASYNC_CMD_HSCH (1 << 0) 31#define VFIO_CCW_ASYNC_CMD_CSCH (1 << 1) 32struct ccw_cmd_region { 33 __u32 command; 34 __u32 ret_code; 35} __attribute__((packed)); 36 37#endif 38