Commit 4212f4e9 authored by Sagi Grimberg's avatar Sagi Grimberg Committed by Christoph Hellwig
Browse files

nvme: document nvme controller states 



We are starting to see some non-trivial states
so lets start documenting them.

Signed-off-by: default avatarSagi Grimberg <sagi@grimberg.me>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent 7774e77e

drivers/nvme/host/nvme.h

+14 −0
Original line number Diff line number Diff line
@@ -181,6 +181,20 @@ static inline u16 nvme_req_qid(struct request *req) 
 */

#define NVME_QUIRK_DELAY_AMOUNT		2300



/*

 * enum nvme_ctrl_state: Controller state

 *

 * @NVME_CTRL_NEW:		New controller just allocated, initial state

 * @NVME_CTRL_LIVE:		Controller is connected and I/O capable

 * @NVME_CTRL_RESETTING:	Controller is resetting (or scheduled reset)

 * @NVME_CTRL_CONNECTING:	Controller is disconnected, now connecting the

 *				transport

 * @NVME_CTRL_DELETING:		Controller is deleting (or scheduled deletion)

 * @NVME_CTRL_DEAD:		Controller is non-present/unresponsive during

 *				shutdown or removal. In this case we forcibly

 *				kill all inflight I/O as they have no chance to

 *				complete

 */

enum nvme_ctrl_state {

	NVME_CTRL_NEW,

	NVME_CTRL_LIVE,