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✏️ nvme_ioctl.h

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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 * Definitions for the NVM Express ioctl interface
 * Copyright (c) 2011-2014, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 */

#ifndef _LINUX_NVME_IOCTL_H
#define _LINUX_NVME_IOCTL_H

#include <linux/types.h>

struct nvme_user_io {
	__u8	opcode;
	__u8	flags;
	__u16	control;
	__u16	nblocks;
	__u16	rsvd;
	__u64	metadata;
	__u64	addr;
	__u64	slba;
	__u32	dsmgmt;
	__u32	reftag;
	__u16	apptag;
	__u16	appmask;
};

struct nvme_passthru_cmd {
	__u8	opcode;
	__u8	flags;
	__u16	rsvd1;
	__u32	nsid;
	__u32	cdw2;
	__u32	cdw3;
	__u64	metadata;
	__u64	addr;
	__u32	metadata_len;
	__u32	data_len;
	__u32	cdw10;
	__u32	cdw11;
	__u32	cdw12;
	__u32	cdw13;
	__u32	cdw14;
	__u32	cdw15;
	__u32	timeout_ms;
	__u32	result;
};

struct nvme_passthru_cmd64 {
	__u8	opcode;
	__u8	flags;
	__u16	rsvd1;
	__u32	nsid;
	__u32	cdw2;
	__u32	cdw3;
	__u64	metadata;
	__u64	addr;
	__u32	metadata_len;
	__u32	data_len;
	__u32	cdw10;
	__u32	cdw11;
	__u32	cdw12;
	__u32	cdw13;
	__u32	cdw14;
	__u32	cdw15;
	__u32	timeout_ms;
	__u32   rsvd2;
	__u64	result;
};

#define nvme_admin_cmd nvme_passthru_cmd

#define NVME_IOCTL_ID		_IO('N', 0x40)
#define NVME_IOCTL_ADMIN_CMD	_IOWR('N', 0x41, struct nvme_admin_cmd)
#define NVME_IOCTL_SUBMIT_IO	_IOW('N', 0x42, struct nvme_user_io)
#define NVME_IOCTL_IO_CMD	_IOWR('N', 0x43, struct nvme_passthru_cmd)
#define NVME_IOCTL_RESET	_IO('N', 0x44)
#define NVME_IOCTL_SUBSYS_RESET	_IO('N', 0x45)
#define NVME_IOCTL_RESCAN	_IO('N', 0x46)
#define NVME_IOCTL_ADMIN64_CMD	_IOWR('N', 0x47, struct nvme_passthru_cmd64)
#define NVME_IOCTL_IO64_CMD	_IOWR('N', 0x48, struct nvme_passthru_cmd64)

#endif /* _LINUX_NVME_IOCTL_H */

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✏️ nvme_ioctl.h