1 files changed, 130 insertions, 0 deletions

diff --git a/include/uapi/linux/lightnvm.h b/include/uapi/linux/lightnvm.h
new file mode 100644
index 000000000000..928f98997d8a
--- /dev/null
+++ b/include/uapi/linux/lightnvm.h
@@ -0,0 +1,130 @@
+/*
+ * 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 _UAPI_LINUX_LIGHTNVM_H
+#define _UAPI_LINUX_LIGHTNVM_H
+
+#ifdef __KERNEL__
+#include <linux/kernel.h>
+#include <linux/ioctl.h>
+#else /* __KERNEL__ */
+#include <stdio.h>
+#include <sys/ioctl.h>
+#define DISK_NAME_LEN 32
+#endif /* __KERNEL__ */
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+#define NVM_TTYPE_NAME_MAX 48
+#define NVM_TTYPE_MAX 63
+
+#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;
+};
+
+enum {
+        NVM_CONFIG_TYPE_SIMPLE = 0,
+};
+
+struct nvm_ioctl_create_conf {
+        __u32 type;
+        union {
+                struct nvm_ioctl_create_simple s;
+        };
+};
+
+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;
+};
+
+
+/* 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,
+};
+
+#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_VERSION_MAJOR       1
+#define NVM_VERSION_MINOR       0
+#define NVM_VERSION_PATCHLEVEL  0
+
+#endif