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  *   ˆl–ß=¿JÅ!¶e8 EpÜ TÅ£Æƒqá?_†I|¥+ÆÅ ­    /*
 * Copyright (c) 2014-2016, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU Lesser General Public License,
 * version 2.1, 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 Lesser General Public License for
 * more details.
 */
#ifndef __NDCTL_H__
#define __NDCTL_H__

#include <linux/types.h>

struct nd_cmd_dimm_flags {
	__u32 status;
	__u32 flags;
} __attribute__((packed));

struct nd_cmd_get_config_size {
	__u32 status;
	__u32 config_size;
	__u32 max_xfer;
} __attribute__((packed));

struct nd_cmd_get_config_data_hdr {
	__u32 in_offset;
	__u32 in_length;
	__u32 status;
	__u8 out_buf[0];
} __attribute__((packed));

struct nd_cmd_set_config_hdr {
	__u32 in_offset;
	__u32 in_length;
	__u8 in_buf[0];
} __attribute__((packed));

struct nd_cmd_vendor_hdr {
	__u32 opcode;
	__u32 in_length;
	__u8 in_buf[0];
} __attribute__((packed));

struct nd_cmd_vendor_tail {
	__u32 status;
	__u32 out_length;
	__u8 out_buf[0];
} __attribute__((packed));

struct nd_cmd_ars_cap {
	__u64 address;
	__u64 length;
	__u32 status;
	__u32 max_ars_out;
	__u32 clear_err_unit;
	__u16 flags;
	__u16 reserved;
} __attribute__((packed));

struct nd_cmd_ars_start {
	__u64 address;
	__u64 length;
	__u16 type;
	__u8 flags;
	__u8 reserved[5];
	__u32 status;
	__u32 scrub_time;
} __attribute__((packed));

struct nd_cmd_ars_status {
	__u32 status;
	__u32 out_length;
	__u64 address;
	__u64 length;
	__u64 restart_address;
	__u64 restart_length;
	__u16 type;
	__u16 flags;
	__u32 num_records;
	struct nd_ars_record {
		__u32 handle;
		__u32 reserved;
		__u64 err_address;
		__u64 length;
	} __attribute__((packed)) records[0];
} __attribute__((packed));

struct nd_cmd_clear_error {
	__u64 address;
	__u64 length;
	__u32 status;
	__u8 reserved[4];
	__u64 cleared;
} __attribute__((packed));

enum {
	ND_CMD_IMPLEMENTED = 0,

	/* bus commands */
	ND_CMD_ARS_CAP = 1,
	ND_CMD_ARS_START = 2,
	ND_CMD_ARS_STATUS = 3,
	ND_CMD_CLEAR_ERROR = 4,

	/* per-dimm commands */
	ND_CMD_SMART = 1,
	ND_CMD_SMART_THRESHOLD = 2,
	ND_CMD_DIMM_FLAGS = 3,
	ND_CMD_GET_CONFIG_SIZE = 4,
	ND_CMD_GET_CONFIG_DATA = 5,
	ND_CMD_SET_CONFIG_DATA = 6,
	ND_CMD_VENDOR_EFFECT_LOG_SIZE = 7,
	ND_CMD_VENDOR_EFFECT_LOG = 8,
	ND_CMD_VENDOR = 9,
	ND_CMD_CALL = 10,
};

enum {
	ND_ARS_VOLATILE = 1,
	ND_ARS_PERSISTENT = 2,
	ND_ARS_RETURN_PREV_DATA = 1 << 1,
	ND_CONFIG_LOCKED = 1,
};

static __inline__ const char *nvdimm_bus_cmd_name(unsigned cmd)
{
	switch (cmd) {
	case ND_CMD_ARS_CAP:		return "ars_cap";
	case ND_CMD_ARS_START:		return "ars_start";
	case ND_CMD_ARS_STATUS:		return "ars_status";
	case ND_CMD_CLEAR_ERROR:	return "clear_error";
	case ND_CMD_CALL:		return "cmd_call";
	default:			return "unknown";
	}
}

static __inline__ const char *nvdimm_cmd_name(unsigned cmd)
{
	switch (cmd) {
	case ND_CMD_SMART:			return "smart";
	case ND_CMD_SMART_THRESHOLD:		return "smart_thresh";
	case ND_CMD_DIMM_FLAGS:			return "flags";
	case ND_CMD_GET_CONFIG_SIZE:		return "get_size";
	case ND_CMD_GET_CONFIG_DATA:		return "get_data";
	case ND_CMD_SET_CONFIG_DATA:		return "set_data";
	case ND_CMD_VENDOR_EFFECT_LOG_SIZE:	return "effect_size";
	case ND_CMD_VENDOR_EFFECT_LOG:		return "effect_log";
	case ND_CMD_VENDOR:			return "vendor";
	case ND_CMD_CALL:			return "cmd_call";
	default:				return "unknown";
	}
}

#define ND_IOCTL 'N'

#define ND_IOCTL_DIMM_FLAGS		_IOWR(ND_IOCTL, ND_CMD_DIMM_FLAGS,\
					struct nd_cmd_dimm_flags)

#define ND_IOCTL_GET_CONFIG_SIZE	_IOWR(ND_IOCTL, ND_CMD_GET_CONFIG_SIZE,\
					struct nd_cmd_get_config_size)

#define ND_IOCTL_GET_CONFIG_DATA	_IOWR(ND_IOCTL, ND_CMD_GET_CONFIG_DATA,\
					struct nd_cmd_get_