root/include/uapi/linux/lightnvm.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /*
   3  * Copyright (C) 2015 CNEX Labs.  All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License version
   7  * 2 as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; see the file COPYING.  If not, write to
  16  * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139,
  17  * USA.
  18  */
  19 
  20 #ifndef _UAPI_LINUX_LIGHTNVM_H
  21 #define _UAPI_LINUX_LIGHTNVM_H
  22 
  23 #ifdef __KERNEL__
  24 #include <linux/kernel.h>
  25 #include <linux/ioctl.h>
  26 #else /* __KERNEL__ */
  27 #include <stdio.h>
  28 #include <sys/ioctl.h>
  29 #define DISK_NAME_LEN 32
  30 #endif /* __KERNEL__ */
  31 
  32 #include <linux/types.h>
  33 #include <linux/ioctl.h>
  34 
  35 #define NVM_TTYPE_NAME_MAX 48
  36 #define NVM_TTYPE_MAX 63
  37 #define NVM_MMTYPE_LEN 8
  38 
  39 #define NVM_CTRL_FILE "/dev/lightnvm/control"
  40 
  41 struct nvm_ioctl_info_tgt {
  42         __u32 version[3];
  43         __u32 reserved;
  44         char tgtname[NVM_TTYPE_NAME_MAX];
  45 };
  46 
  47 struct nvm_ioctl_info {
  48         __u32 version[3];       /* in/out - major, minor, patch */
  49         __u16 tgtsize;          /* number of targets */
  50         __u16 reserved16;       /* pad to 4K page */
  51         __u32 reserved[12];
  52         struct nvm_ioctl_info_tgt tgts[NVM_TTYPE_MAX];
  53 };
  54 
  55 enum {
  56         NVM_DEVICE_ACTIVE = 1 << 0,
  57 };
  58 
  59 struct nvm_ioctl_device_info {
  60         char devname[DISK_NAME_LEN];
  61         char bmname[NVM_TTYPE_NAME_MAX];
  62         __u32 bmversion[3];
  63         __u32 flags;
  64         __u32 reserved[8];
  65 };
  66 
  67 struct nvm_ioctl_get_devices {
  68         __u32 nr_devices;
  69         __u32 reserved[31];
  70         struct nvm_ioctl_device_info info[31];
  71 };
  72 
  73 struct nvm_ioctl_create_simple {
  74         __u32 lun_begin;
  75         __u32 lun_end;
  76 };
  77 
  78 struct nvm_ioctl_create_extended {
  79         __u16 lun_begin;
  80         __u16 lun_end;
  81         __u16 op;
  82         __u16 rsv;
  83 };
  84 
  85 enum {
  86         NVM_CONFIG_TYPE_SIMPLE = 0,
  87         NVM_CONFIG_TYPE_EXTENDED = 1,
  88 };
  89 
  90 struct nvm_ioctl_create_conf {
  91         __u32 type;
  92         union {
  93                 struct nvm_ioctl_create_simple s;
  94                 struct nvm_ioctl_create_extended e;
  95         };
  96 };
  97 
  98 enum {
  99         NVM_TARGET_FACTORY = 1 << 0,    /* Init target in factory mode */
 100 };
 101 
 102 struct nvm_ioctl_create {
 103         char dev[DISK_NAME_LEN];                /* open-channel SSD device */
 104         char tgttype[NVM_TTYPE_NAME_MAX];       /* target type name */
 105         char tgtname[DISK_NAME_LEN];            /* dev to expose target as */
 106 
 107         __u32 flags;
 108 
 109         struct nvm_ioctl_create_conf conf;
 110 };
 111 
 112 struct nvm_ioctl_remove {
 113         char tgtname[DISK_NAME_LEN];
 114 
 115         __u32 flags;
 116 };
 117 
 118 struct nvm_ioctl_dev_init {
 119         char dev[DISK_NAME_LEN];                /* open-channel SSD device */
 120         char mmtype[NVM_MMTYPE_LEN];            /* register to media manager */
 121 
 122         __u32 flags;
 123 };
 124 
 125 enum {
 126         NVM_FACTORY_ERASE_ONLY_USER     = 1 << 0, /* erase only blocks used as
 127                                                    * host blks or grown blks */
 128         NVM_FACTORY_RESET_HOST_BLKS     = 1 << 1, /* remove host blk marks */
 129         NVM_FACTORY_RESET_GRWN_BBLKS    = 1 << 2, /* remove grown blk marks */
 130         NVM_FACTORY_NR_BITS             = 1 << 3, /* stops here */
 131 };
 132 
 133 struct nvm_ioctl_dev_factory {
 134         char dev[DISK_NAME_LEN];
 135 
 136         __u32 flags;
 137 };
 138 
 139 struct nvm_user_vio {
 140         __u8 opcode;
 141         __u8 flags;
 142         __u16 control;
 143         __u16 nppas;
 144         __u16 rsvd;
 145         __u64 metadata;
 146         __u64 addr;
 147         __u64 ppa_list;
 148         __u32 metadata_len;
 149         __u32 data_len;
 150         __u64 status;
 151         __u32 result;
 152         __u32 rsvd3[3];
 153 };
 154 
 155 struct nvm_passthru_vio {
 156         __u8 opcode;
 157         __u8 flags;
 158         __u8 rsvd[2];
 159         __u32 nsid;
 160         __u32 cdw2;
 161         __u32 cdw3;
 162         __u64 metadata;
 163         __u64 addr;
 164         __u32 metadata_len;
 165         __u32 data_len;
 166         __u64 ppa_list;
 167         __u16 nppas;
 168         __u16 control;
 169         __u32 cdw13;
 170         __u32 cdw14;
 171         __u32 cdw15;
 172         __u64 status;
 173         __u32 result;
 174         __u32 timeout_ms;
 175 };
 176 
 177 /* The ioctl type, 'L', 0x20 - 0x2F documented in ioctl-number.txt */
 178 enum {
 179         /* top level cmds */
 180         NVM_INFO_CMD = 0x20,
 181         NVM_GET_DEVICES_CMD,
 182 
 183         /* device level cmds */
 184         NVM_DEV_CREATE_CMD,
 185         NVM_DEV_REMOVE_CMD,
 186 
 187         /* Init a device to support LightNVM media managers */
 188         NVM_DEV_INIT_CMD,
 189 
 190         /* Factory reset device */
 191         NVM_DEV_FACTORY_CMD,
 192 
 193         /* Vector user I/O */
 194         NVM_DEV_VIO_ADMIN_CMD = 0x41,
 195         NVM_DEV_VIO_CMD = 0x42,
 196         NVM_DEV_VIO_USER_CMD = 0x43,
 197 };
 198 
 199 #define NVM_IOCTL 'L' /* 0x4c */
 200 
 201 #define NVM_INFO                _IOWR(NVM_IOCTL, NVM_INFO_CMD, \
 202                                                 struct nvm_ioctl_info)
 203 #define NVM_GET_DEVICES         _IOR(NVM_IOCTL, NVM_GET_DEVICES_CMD, \
 204                                                 struct nvm_ioctl_get_devices)
 205 #define NVM_DEV_CREATE          _IOW(NVM_IOCTL, NVM_DEV_CREATE_CMD, \
 206                                                 struct nvm_ioctl_create)
 207 #define NVM_DEV_REMOVE          _IOW(NVM_IOCTL, NVM_DEV_REMOVE_CMD, \
 208                                                 struct nvm_ioctl_remove)
 209 #define NVM_DEV_INIT            _IOW(NVM_IOCTL, NVM_DEV_INIT_CMD, \
 210                                                 struct nvm_ioctl_dev_init)
 211 #define NVM_DEV_FACTORY         _IOW(NVM_IOCTL, NVM_DEV_FACTORY_CMD, \
 212                                                 struct nvm_ioctl_dev_factory)
 213 
 214 #define NVME_NVM_IOCTL_IO_VIO           _IOWR(NVM_IOCTL, NVM_DEV_VIO_USER_CMD, \
 215                                                 struct nvm_passthru_vio)
 216 #define NVME_NVM_IOCTL_ADMIN_VIO        _IOWR(NVM_IOCTL, NVM_DEV_VIO_ADMIN_CMD,\
 217                                                 struct nvm_passthru_vio)
 218 #define NVME_NVM_IOCTL_SUBMIT_VIO       _IOWR(NVM_IOCTL, NVM_DEV_VIO_CMD,\
 219                                                 struct nvm_user_vio)
 220 
 221 #define NVM_VERSION_MAJOR       1
 222 #define NVM_VERSION_MINOR       0
 223 #define NVM_VERSION_PATCHLEVEL  0
 224 
 225 #endif