9ec3bb2f99
This exposes ioctl and sysfs methods a user can invoke to request the driver rescan a controller and its namespaces. This is less harsh than doing a controller reset, which temporarilly halts all IO, just to surface a newly attached namespace. This is mainly useful for controllers that implement the namespace management command, but do not support the namespace notify change asynchronous event notification. Signed-off-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Jens Axboe <axboe@fb.com>
67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
/*
|
|
* Definitions for the NVM Express ioctl interface
|
|
* Copyright (c) 2011-2014, Intel Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, 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 General Public License for
|
|
* more details.
|
|
*/
|
|
|
|
#ifndef _UAPI_LINUX_NVME_IOCTL_H
|
|
#define _UAPI_LINUX_NVME_IOCTL_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
struct nvme_user_io {
|
|
__u8 opcode;
|
|
__u8 flags;
|
|
__u16 control;
|
|
__u16 nblocks;
|
|
__u16 rsvd;
|
|
__u64 metadata;
|
|
__u64 addr;
|
|
__u64 slba;
|
|
__u32 dsmgmt;
|
|
__u32 reftag;
|
|
__u16 apptag;
|
|
__u16 appmask;
|
|
};
|
|
|
|
struct nvme_passthru_cmd {
|
|
__u8 opcode;
|
|
__u8 flags;
|
|
__u16 rsvd1;
|
|
__u32 nsid;
|
|
__u32 cdw2;
|
|
__u32 cdw3;
|
|
__u64 metadata;
|
|
__u64 addr;
|
|
__u32 metadata_len;
|
|
__u32 data_len;
|
|
__u32 cdw10;
|
|
__u32 cdw11;
|
|
__u32 cdw12;
|
|
__u32 cdw13;
|
|
__u32 cdw14;
|
|
__u32 cdw15;
|
|
__u32 timeout_ms;
|
|
__u32 result;
|
|
};
|
|
|
|
#define nvme_admin_cmd nvme_passthru_cmd
|
|
|
|
#define NVME_IOCTL_ID _IO('N', 0x40)
|
|
#define NVME_IOCTL_ADMIN_CMD _IOWR('N', 0x41, struct nvme_admin_cmd)
|
|
#define NVME_IOCTL_SUBMIT_IO _IOW('N', 0x42, struct nvme_user_io)
|
|
#define NVME_IOCTL_IO_CMD _IOWR('N', 0x43, struct nvme_passthru_cmd)
|
|
#define NVME_IOCTL_RESET _IO('N', 0x44)
|
|
#define NVME_IOCTL_SUBSYS_RESET _IO('N', 0x45)
|
|
#define NVME_IOCTL_RESCAN _IO('N', 0x46)
|
|
|
|
#endif /* _UAPI_LINUX_NVME_IOCTL_H */
|