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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657/* 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