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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

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* This program is free software; you can redistribute it and/or

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* modify it under the terms of the GNU General Public License version

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* 2 as published by the Free Software Foundation.

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* This program is distributed in the hope that it will be useful, but

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* WITHOUT ANY WARRANTY; without even the implied warranty of

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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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* General Public License for more details.

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* You should have received a copy of the GNU General Public License

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* along with this program; see the file COPYING. If not, write to

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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139,

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* USA.

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#ifndef _LINUX_LIGHTNVM_H

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#define _LINUX_LIGHTNVM_H

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#include <stdio.h>

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#include <sys/ioctl.h>

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#define DISK_NAME_LEN 32

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#include <linux/types.h>

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#include <linux/ioctl.h>

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#define NVM_TTYPE_NAME_MAX 48

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#define NVM_TTYPE_MAX 63

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#define NVM_MMTYPE_LEN 8

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#define NVM_CTRL_FILE "/dev/lightnvm/control"

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struct nvm_ioctl_info_tgt {

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__u32 version[3];

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__u32 reserved;

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char tgtname[NVM_TTYPE_NAME_MAX];

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};

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struct nvm_ioctl_info {

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__u32 version[3]; /* in/out - major, minor, patch */

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__u16 tgtsize; /* number of targets */

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__u16 reserved16; /* pad to 4K page */

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__u32 reserved[12];

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struct nvm_ioctl_info_tgt tgts[NVM_TTYPE_MAX];

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};

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enum {

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NVM_DEVICE_ACTIVE = 1 << 0,

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};

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struct nvm_ioctl_device_info {

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char devname[DISK_NAME_LEN];

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char bmname[NVM_TTYPE_NAME_MAX];

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__u32 bmversion[3];

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__u32 flags;

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__u32 reserved[8];

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};

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struct nvm_ioctl_get_devices {

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__u32 nr_devices;

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__u32 reserved[31];

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struct nvm_ioctl_device_info info[31];

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};

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struct nvm_ioctl_create_simple {

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__u32 lun_begin;

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__u32 lun_end;

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};

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struct nvm_ioctl_create_extended {

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__u16 lun_begin;

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__u16 lun_end;

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__u16 op;

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__u16 rsv;

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};

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enum {

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NVM_CONFIG_TYPE_SIMPLE = 0,

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NVM_CONFIG_TYPE_EXTENDED = 1,

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};

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struct nvm_ioctl_create_conf {

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__u32 type;

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union {

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struct nvm_ioctl_create_simple s;

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struct nvm_ioctl_create_extended e;

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};

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};

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enum {

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NVM_TARGET_FACTORY = 1 << 0, /* Init target in factory mode */

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};

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struct nvm_ioctl_create {

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char dev[DISK_NAME_LEN]; /* open-channel SSD device */

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char tgttype[NVM_TTYPE_NAME_MAX]; /* target type name */

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char tgtname[DISK_NAME_LEN]; /* dev to expose target as */

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__u32 flags;

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struct nvm_ioctl_create_conf conf;

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};

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struct nvm_ioctl_remove {

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char tgtname[DISK_NAME_LEN];

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__u32 flags;

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};

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struct nvm_ioctl_dev_init {

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char dev[DISK_NAME_LEN]; /* open-channel SSD device */

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char mmtype[NVM_MMTYPE_LEN]; /* register to media manager */

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__u32 flags;

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};

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enum {

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NVM_FACTORY_ERASE_ONLY_USER = 1 << 0, /* erase only blocks used as

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* host blks or grown blks */

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NVM_FACTORY_RESET_HOST_BLKS = 1 << 1, /* remove host blk marks */

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NVM_FACTORY_RESET_GRWN_BBLKS = 1 << 2, /* remove grown blk marks */

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NVM_FACTORY_NR_BITS = 1 << 3, /* stops here */

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};

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struct nvm_ioctl_dev_factory {

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char dev[DISK_NAME_LEN];

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__u32 flags;

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};

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struct nvm_user_vio {

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__u8 opcode;

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__u8 flags;

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__u16 control;

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__u16 nppas;

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__u16 rsvd;

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__u64 metadata;

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__u64 addr;

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__u64 ppa_list;

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__u32 metadata_len;

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__u32 data_len;

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__u64 status;

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__u32 result;

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__u32 rsvd3[3];

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};

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struct nvm_passthru_vio {

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__u8 opcode;

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__u8 flags;

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__u8 rsvd[2];

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__u32 nsid;

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__u32 cdw2;

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__u32 cdw3;

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__u64 metadata;

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__u64 addr;

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__u32 metadata_len;

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__u32 data_len;

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__u64 ppa_list;

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__u16 nppas;

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__u16 control;

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__u32 cdw13;

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__u32 cdw14;

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__u32 cdw15;

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__u64 status;

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__u32 result;

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__u32 timeout_ms;

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};

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/* The ioctl type, 'L', 0x20 - 0x2F documented in ioctl-number.txt */

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enum {

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/* top level cmds */

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NVM_INFO_CMD = 0x20,

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NVM_GET_DEVICES_CMD,

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/* device level cmds */

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NVM_DEV_CREATE_CMD,

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NVM_DEV_REMOVE_CMD,

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/* Init a device to support LightNVM media managers */

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NVM_DEV_INIT_CMD,

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/* Factory reset device */

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NVM_DEV_FACTORY_CMD,

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/* Vector user I/O */

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NVM_DEV_VIO_ADMIN_CMD = 0x41,

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NVM_DEV_VIO_CMD = 0x42,

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NVM_DEV_VIO_USER_CMD = 0x43,

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};

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#define NVM_IOCTL 'L' /* 0x4c */

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#define NVM_INFO _IOWR(NVM_IOCTL, NVM_INFO_CMD, \

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struct nvm_ioctl_info)

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#define NVM_GET_DEVICES _IOR(NVM_IOCTL, NVM_GET_DEVICES_CMD, \

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struct nvm_ioctl_get_devices)

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#define NVM_DEV_CREATE _IOW(NVM_IOCTL, NVM_DEV_CREATE_CMD, \

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struct nvm_ioctl_create)

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#define NVM_DEV_REMOVE _IOW(NVM_IOCTL, NVM_DEV_REMOVE_CMD, \

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struct nvm_ioctl_remove)

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#define NVM_DEV_INIT _IOW(NVM_IOCTL, NVM_DEV_INIT_CMD, \

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struct nvm_ioctl_dev_init)

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#define NVM_DEV_FACTORY _IOW(NVM_IOCTL, NVM_DEV_FACTORY_CMD, \

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struct nvm_ioctl_dev_factory)

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#define NVME_NVM_IOCTL_IO_VIO _IOWR(NVM_IOCTL, NVM_DEV_VIO_USER_CMD, \

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struct nvm_passthru_vio)

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#define NVME_NVM_IOCTL_ADMIN_VIO _IOWR(NVM_IOCTL, NVM_DEV_VIO_ADMIN_CMD,\

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struct nvm_passthru_vio)

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#define NVME_NVM_IOCTL_SUBMIT_VIO _IOWR(NVM_IOCTL, NVM_DEV_VIO_CMD,\

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struct nvm_user_vio)

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#define NVM_VERSION_MAJOR 1

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#define NVM_VERSION_MINOR 0

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#define NVM_VERSION_PATCHLEVEL 0

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#endif

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