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Edit File: vfio_ccw.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * Interfaces for vfio-ccw * * Copyright IBM Corp. 2017 * * Author(s): Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> */ #ifndef _VFIO_CCW_H_ #define _VFIO_CCW_H_ #include <linux/types.h> /* used for START SUBCHANNEL, always present */ struct ccw_io_region { #define ORB_AREA_SIZE 12 __u8 orb_area[ORB_AREA_SIZE]; #define SCSW_AREA_SIZE 12 __u8 scsw_area[SCSW_AREA_SIZE]; #define IRB_AREA_SIZE 96 __u8 irb_area[IRB_AREA_SIZE]; __u32 ret_code; } __packed; /* * used for processing commands that trigger asynchronous actions * Note: this is controlled by a capability */ #define VFIO_CCW_ASYNC_CMD_HSCH (1 << 0) #define VFIO_CCW_ASYNC_CMD_CSCH (1 << 1) struct ccw_cmd_region { __u32 command; __u32 ret_code; } __packed; /* * Used for processing commands that read the subchannel-information block * Reading this region triggers a stsch() to hardware * Note: this is controlled by a capability */ struct ccw_schib_region { #define SCHIB_AREA_SIZE 52 __u8 schib_area[SCHIB_AREA_SIZE]; } __packed; /* * Used for returning a Channel Report Word to userspace. * Note: this is controlled by a capability */ struct ccw_crw_region { __u32 crw; __u32 pad; } __packed; #endif