1 // SPDX-License-Identifier: GPL-2.0-or-later
8  * Copyright (C) 2008 Hannes Reinecke <hare@suse.de>
23 #define HP_SW_PATH_UNINITIALIZED	-1
37  * tur_done - Handle TEST UNIT READY return status
48 	switch (sshdr->sense_key) {  in tur_done()
53 		if (sshdr->asc == 0x04 && sshdr->ascq == 2) {  in tur_done()
55 			 * LUN not ready - Initialization command required  in tur_done()
59 			h->path_state = HP_SW_PATH_PASSIVE;  in tur_done()
67 			   HP_SW_NAME, sshdr->sense_key, sshdr->asc,  in tur_done()
68 			   sshdr->ascq);  in tur_done()
75  * hp_sw_tur - Send TEST UNIT READY
98 		h->path_state = HP_SW_PATH_ACTIVE;  in hp_sw_tur()
114  * hp_sw_start_stop - Send START STOP UNIT command
123 	struct scsi_device *sdev = h->sdev;  in hp_sw_start_stop()
148 			 * LUN not ready - manual intervention required  in hp_sw_start_stop()
150 			 * Switch-over in progress, retry.  in hp_sw_start_stop()
152 			if (--retry_cnt)  in hp_sw_start_stop()
171 	struct hp_sw_dh_data *h = sdev->handler_data;  in hp_sw_prep_fn()
173 	if (h->path_state != HP_SW_PATH_ACTIVE) {  in hp_sw_prep_fn()
174 		req->rq_flags |= RQF_QUIET;  in hp_sw_prep_fn()
182  * hp_sw_activate - Activate a path
183  * @sdev: sdev on the path to be activated
195 	struct hp_sw_dh_data *h = sdev->handler_data;  in hp_sw_activate()
199 	if (ret == SCSI_DH_OK && h->path_state == HP_SW_PATH_PASSIVE)  in hp_sw_activate()
215 	h->path_state = HP_SW_PATH_UNINITIALIZED;  in hp_sw_bus_attach()
216 	h->retries = HP_SW_RETRIES;  in hp_sw_bus_attach()
217 	h->sdev = sdev;  in hp_sw_bus_attach()
222 	if (h->path_state == HP_SW_PATH_UNINITIALIZED) {  in hp_sw_bus_attach()
228 		    HP_SW_NAME, h->path_state == HP_SW_PATH_ACTIVE?  in hp_sw_bus_attach()
231 	sdev->handler_data = h;  in hp_sw_bus_attach()
240 	kfree(sdev->handler_data);  in hp_sw_bus_detach()
241 	sdev->handler_data = NULL;  in hp_sw_bus_detach()