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lightnvm.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * Copyright (C) 2015 CNEX Labs. All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version * 2 as published by the Free Software Foundation. * * This program is distributed in the hope that 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. * * You should have received a copy of the GNU General Public License * along with this program; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, * USA. */ #ifndef _LINUX_LIGHTNVM_H #define _LINUX_LIGHTNVM_H #include <stdio.h> #include <sys/ioctl.h> #define DISK_NAME_LEN 32 #include <linux/types.h> #include <linux/ioctl.h> #define NVM_TTYPE_NAME_MAX 48 #define NVM_TTYPE_MAX 63 #define NVM_MMTYPE_LEN 8 #define NVM_CTRL_FILE "/dev/lightnvm/control" struct nvm_ioctl_info_tgt { __u32 version[3]; __u32 reserved; char tgtname[NVM_TTYPE_NAME_MAX]; }; struct nvm_ioctl_info { __u32 version[3]; /* in/out - major, minor, patch */ __u16 tgtsize; /* number of targets */ __u16 reserved16; /* pad to 4K page */ __u32 reserved[12]; struct nvm_ioctl_info_tgt tgts[NVM_TTYPE_MAX]; }; enum { NVM_DEVICE_ACTIVE = 1 << 0, }; struct nvm_ioctl_device_info { char devname[DISK_NAME_LEN]; char bmname[NVM_TTYPE_NAME_MAX]; __u32 bmversion[3]; __u32 flags; __u32 reserved[8]; }; struct nvm_ioctl_get_devices { __u32 nr_devices; __u32 reserved[31]; struct nvm_ioctl_device_info info[31]; }; struct nvm_ioctl_create_simple { __u32 lun_begin; __u32 lun_end; }; struct nvm_ioctl_create_extended { __u16 lun_begin; __u16 lun_end; __u16 op; __u16 rsv; }; enum { NVM_CONFIG_TYPE_SIMPLE = 0, NVM_CONFIG_TYPE_EXTENDED = 1, }; struct nvm_ioctl_create_conf { __u32 type; union { struct nvm_ioctl_create_simple s; struct nvm_ioctl_create_extended e; }; }; enum { NVM_TARGET_FACTORY = 1 << 0, /* Init target in factory mode */ }; struct nvm_ioctl_create { char dev[DISK_NAME_LEN]; /* open-channel SSD device */ char tgttype[NVM_TTYPE_NAME_MAX]; /* target type name */ char tgtname[DISK_NAME_LEN]; /* dev to expose target as */ __u32 flags; struct nvm_ioctl_create_conf conf; }; struct nvm_ioctl_remove { char tgtname[DISK_NAME_LEN]; __u32 flags; }; struct nvm_ioctl_dev_init { char dev[DISK_NAME_LEN]; /* open-channel SSD device */ char mmtype[NVM_MMTYPE_LEN]; /* register to media manager */ __u32 flags; }; enum { NVM_FACTORY_ERASE_ONLY_USER = 1 << 0, /* erase only blocks used as * host blks or grown blks */ NVM_FACTORY_RESET_HOST_BLKS = 1 << 1, /* remove host blk marks */ NVM_FACTORY_RESET_GRWN_BBLKS = 1 << 2, /* remove grown blk marks */ NVM_FACTORY_NR_BITS = 1 << 3, /* stops here */ }; struct nvm_ioctl_dev_factory { char dev[DISK_NAME_LEN]; __u32 flags; }; struct nvm_user_vio { __u8 opcode; __u8 flags; __u16 control; __u16 nppas; __u16 rsvd; __u64 metadata; __u64 addr; __u64 ppa_list; __u32 metadata_len; __u32 data_len; __u64 status; __u32 result; __u32 rsvd3[3]; }; struct nvm_passthru_vio { __u8 opcode; __u8 flags; __u8 rsvd[2]; __u32 nsid; __u32 cdw2; __u32 cdw3; __u64 metadata; __u64 addr; __u32 metadata_len; __u32 data_len; __u64 ppa_list; __u16 nppas; __u16 control; __u32 cdw13; __u32 cdw14; __u32 cdw15; __u64 status; __u32 result; __u32 timeout_ms; }; /* The ioctl type, 'L', 0x20 - 0x2F documented in ioctl-number.txt */ enum { /* top level cmds */ NVM_INFO_CMD = 0x20, NVM_GET_DEVICES_CMD, /* device level cmds */ NVM_DEV_CREATE_CMD, NVM_DEV_REMOVE_CMD, /* Init a device to support LightNVM media managers */ NVM_DEV_INIT_CMD, /* Factory reset device */ NVM_DEV_FACTORY_CMD, /* Vector user I/O */ NVM_DEV_VIO_ADMIN_CMD = 0x41, NVM_DEV_VIO_CMD = 0x42, NVM_DEV_VIO_USER_CMD = 0x43, }; #define NVM_IOCTL 'L' /* 0x4c */ #define NVM_INFO _IOWR(NVM_IOCTL, NVM_INFO_CMD, \ struct nvm_ioctl_info) #define NVM_GET_DEVICES _IOR(NVM_IOCTL, NVM_GET_DEVICES_CMD, \ struct nvm_ioctl_get_devices) #define NVM_DEV_CREATE _IOW(NVM_IOCTL, NVM_DEV_CREATE_CMD, \ struct nvm_ioctl_create) #define NVM_DEV_REMOVE _IOW(NVM_IOCTL, NVM_DEV_REMOVE_CMD, \ struct nvm_ioctl_remove) #define NVM_DEV_INIT _IOW(NVM_IOCTL, NVM_DEV_INIT_CMD, \ struct nvm_ioctl_dev_init) #define NVM_DEV_FACTORY _IOW(NVM_IOCTL, NVM_DEV_FACTORY_CMD, \ struct nvm_ioctl_dev_factory) #define NVME_NVM_IOCTL_IO_VIO _IOWR(NVM_IOCTL, NVM_DEV_VIO_USER_CMD, \ struct nvm_passthru_vio) #define NVME_NVM_IOCTL_ADMIN_VIO _IOWR(NVM_IOCTL, NVM_DEV_VIO_ADMIN_CMD,\ struct nvm_passthru_vio) #define NVME_NVM_IOCTL_SUBMIT_VIO _IOWR(NVM_IOCTL, NVM_DEV_VIO_CMD,\ struct nvm_user_vio) #define NVM_VERSION_MAJOR 1 #define NVM_VERSION_MINOR 0 #define NVM_VERSION_PATCHLEVEL 0 #endif
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