xref: /openbmc/linux/drivers/scsi/bfa/bfad_im.c (revision b6dcefde)
1 /*
2  * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
3  * All rights reserved
4  * www.brocade.com
5  *
6  * Linux driver for Brocade Fibre Channel Host Bus Adapter.
7  *
8  * This program is free software; you can redistribute it and/or modify it
9  * under the terms of the GNU General Public License (GPL) Version 2 as
10  * published by the Free Software Foundation
11  *
12  * This program is distributed in the hope that it will be useful, but
13  * WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * General Public License for more details.
16  */
17 
18 /**
19  *  bfad_im.c Linux driver IM module.
20  */
21 
22 #include "bfad_drv.h"
23 #include "bfad_im.h"
24 #include "bfad_trcmod.h"
25 #include "bfa_cb_ioim_macros.h"
26 #include <fcb/bfa_fcb_fcpim.h>
27 
28 BFA_TRC_FILE(LDRV, IM);
29 
30 DEFINE_IDR(bfad_im_port_index);
31 struct scsi_transport_template *bfad_im_scsi_transport_template;
32 static void bfad_im_itnim_work_handler(struct work_struct *work);
33 static int bfad_im_queuecommand(struct scsi_cmnd *cmnd,
34 		void (*done)(struct scsi_cmnd *));
35 static int bfad_im_slave_alloc(struct scsi_device *sdev);
36 
37 void
38 bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
39 			enum bfi_ioim_status io_status, u8 scsi_status,
40 			int sns_len, u8 *sns_info, s32 residue)
41 {
42 	struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
43 	struct bfad_s         *bfad = drv;
44 	struct bfad_itnim_data_s *itnim_data;
45 	struct bfad_itnim_s *itnim;
46 
47 	switch (io_status) {
48 	case BFI_IOIM_STS_OK:
49 		bfa_trc(bfad, scsi_status);
50 		cmnd->result = ScsiResult(DID_OK, scsi_status);
51 		scsi_set_resid(cmnd, 0);
52 
53 		if (sns_len > 0) {
54 			bfa_trc(bfad, sns_len);
55 			if (sns_len > SCSI_SENSE_BUFFERSIZE)
56 				sns_len = SCSI_SENSE_BUFFERSIZE;
57 			memcpy(cmnd->sense_buffer, sns_info, sns_len);
58 		}
59 		if (residue > 0)
60 			scsi_set_resid(cmnd, residue);
61 		break;
62 
63 	case BFI_IOIM_STS_ABORTED:
64 	case BFI_IOIM_STS_TIMEDOUT:
65 	case BFI_IOIM_STS_PATHTOV:
66 	default:
67 		cmnd->result = ScsiResult(DID_ERROR, 0);
68 	}
69 
70 	/* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
71 	if (cmnd->device->host != NULL)
72 		scsi_dma_unmap(cmnd);
73 
74 	cmnd->host_scribble = NULL;
75 	bfa_trc(bfad, cmnd->result);
76 
77 	itnim_data = cmnd->device->hostdata;
78 	if (itnim_data) {
79 		itnim = itnim_data->itnim;
80 		if (!cmnd->result && itnim &&
81 			 (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
82 			/* Queue depth adjustment for good status completion */
83 			bfad_os_ramp_up_qdepth(itnim, cmnd->device);
84 		} else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
85 			/* qfull handling */
86 			bfad_os_handle_qfull(itnim, cmnd->device);
87 		}
88 	}
89 
90 	cmnd->scsi_done(cmnd);
91 }
92 
93 void
94 bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
95 {
96 	struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
97 	struct bfad_itnim_data_s *itnim_data;
98 	struct bfad_itnim_s *itnim;
99 
100 	cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD);
101 
102 	/* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
103 	if (cmnd->device->host != NULL)
104 		scsi_dma_unmap(cmnd);
105 
106 	cmnd->host_scribble = NULL;
107 
108 	/* Queue depth adjustment */
109 	if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
110 		itnim_data = cmnd->device->hostdata;
111 		if (itnim_data) {
112 			itnim = itnim_data->itnim;
113 			if (itnim)
114 				bfad_os_ramp_up_qdepth(itnim, cmnd->device);
115 		}
116 	}
117 
118 	cmnd->scsi_done(cmnd);
119 }
120 
121 void
122 bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
123 {
124 	struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
125 	struct bfad_s         *bfad = drv;
126 
127 	cmnd->result = ScsiResult(DID_ERROR, 0);
128 
129 	/* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
130 	if (cmnd->device->host != NULL)
131 		scsi_dma_unmap(cmnd);
132 
133 	bfa_trc(bfad, cmnd->result);
134 	cmnd->host_scribble = NULL;
135 }
136 
137 void
138 bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
139 		   enum bfi_tskim_status tsk_status)
140 {
141 	struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
142 	wait_queue_head_t *wq;
143 
144 	cmnd->SCp.Status |= tsk_status << 1;
145 	set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
146 	wq = (wait_queue_head_t *) cmnd->SCp.ptr;
147 	cmnd->SCp.ptr = NULL;
148 
149 	if (wq)
150 		wake_up(wq);
151 }
152 
153 void
154 bfa_cb_ioim_resfree(void *drv)
155 {
156 }
157 
158 /**
159  *  Scsi_Host_template SCSI host template
160  */
161 /**
162  * Scsi_Host template entry, returns BFAD PCI info.
163  */
164 static const char *
165 bfad_im_info(struct Scsi_Host *shost)
166 {
167 	static char     bfa_buf[256];
168 	struct bfad_im_port_s *im_port =
169 			(struct bfad_im_port_s *) shost->hostdata[0];
170 	struct bfa_ioc_attr_s  ioc_attr;
171 	struct bfad_s         *bfad = im_port->bfad;
172 
173 	memset(&ioc_attr, 0, sizeof(ioc_attr));
174 	bfa_get_attr(&bfad->bfa, &ioc_attr);
175 
176 	memset(bfa_buf, 0, sizeof(bfa_buf));
177 	snprintf(bfa_buf, sizeof(bfa_buf),
178 		 "Brocade FC/FCOE Adapter, " "model: %s hwpath: %s driver: %s",
179 		 ioc_attr.adapter_attr.model, bfad->pci_name,
180 		 BFAD_DRIVER_VERSION);
181 	return bfa_buf;
182 }
183 
184 /**
185  * Scsi_Host template entry, aborts the specified SCSI command.
186  *
187  * Returns: SUCCESS or FAILED.
188  */
189 static int
190 bfad_im_abort_handler(struct scsi_cmnd *cmnd)
191 {
192 	struct Scsi_Host *shost = cmnd->device->host;
193 	struct bfad_im_port_s *im_port =
194 			(struct bfad_im_port_s *) shost->hostdata[0];
195 	struct bfad_s         *bfad = im_port->bfad;
196 	struct bfa_ioim_s *hal_io;
197 	unsigned long   flags;
198 	u32        timeout;
199 	int             rc = FAILED;
200 
201 	spin_lock_irqsave(&bfad->bfad_lock, flags);
202 	hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
203 	if (!hal_io) {
204 		/* IO has been completed, retrun success */
205 		rc = SUCCESS;
206 		goto out;
207 	}
208 	if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
209 		rc = FAILED;
210 		goto out;
211 	}
212 
213 	bfa_trc(bfad, hal_io->iotag);
214 	bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_ABORT,
215 		im_port->shost->host_no, cmnd, hal_io->iotag);
216 	bfa_ioim_abort(hal_io);
217 	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
218 
219 	/* Need to wait until the command get aborted */
220 	timeout = 10;
221 	while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
222 		set_current_state(TASK_UNINTERRUPTIBLE);
223 		schedule_timeout(timeout);
224 		if (timeout < 4 * HZ)
225 			timeout *= 2;
226 	}
227 
228 	cmnd->scsi_done(cmnd);
229 	bfa_trc(bfad, hal_io->iotag);
230 	bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_ABORT_COMP,
231 		im_port->shost->host_no, cmnd, hal_io->iotag);
232 	return SUCCESS;
233 out:
234 	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
235 	return rc;
236 }
237 
238 static bfa_status_t
239 bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
240 		     struct bfad_itnim_s *itnim)
241 {
242 	struct bfa_tskim_s *tskim;
243 	struct bfa_itnim_s *bfa_itnim;
244 	bfa_status_t    rc = BFA_STATUS_OK;
245 
246 	bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
247 	tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
248 	if (!tskim) {
249 		BFA_DEV_PRINTF(bfad, BFA_ERR,
250 			       "target reset, fail to allocate tskim\n");
251 		rc = BFA_STATUS_FAILED;
252 		goto out;
253 	}
254 
255 	/*
256 	 * Set host_scribble to NULL to avoid aborting a task command if
257 	 * happens.
258 	 */
259 	cmnd->host_scribble = NULL;
260 	cmnd->SCp.Status = 0;
261 	bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
262 	bfa_tskim_start(tskim, bfa_itnim, (lun_t)0,
263 			    FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
264 out:
265 	return rc;
266 }
267 
268 /**
269  * Scsi_Host template entry, resets a LUN and abort its all commands.
270  *
271  * Returns: SUCCESS or FAILED.
272  *
273  */
274 static int
275 bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
276 {
277 	struct Scsi_Host *shost = cmnd->device->host;
278 	struct bfad_im_port_s *im_port =
279 			(struct bfad_im_port_s *) shost->hostdata[0];
280 	struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
281 	struct bfad_s         *bfad = im_port->bfad;
282 	struct bfa_tskim_s *tskim;
283 	struct bfad_itnim_s   *itnim;
284 	struct bfa_itnim_s *bfa_itnim;
285 	DECLARE_WAIT_QUEUE_HEAD(wq);
286 	int             rc = SUCCESS;
287 	unsigned long   flags;
288 	enum bfi_tskim_status task_status;
289 
290 	spin_lock_irqsave(&bfad->bfad_lock, flags);
291 	itnim = itnim_data->itnim;
292 	if (!itnim) {
293 		spin_unlock_irqrestore(&bfad->bfad_lock, flags);
294 		rc = FAILED;
295 		goto out;
296 	}
297 
298 	tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
299 	if (!tskim) {
300 		BFA_DEV_PRINTF(bfad, BFA_ERR,
301 				"LUN reset, fail to allocate tskim");
302 		spin_unlock_irqrestore(&bfad->bfad_lock, flags);
303 		rc = FAILED;
304 		goto out;
305 	}
306 
307 	/**
308 	 * Set host_scribble to NULL to avoid aborting a task command
309 	 * if happens.
310 	 */
311 	cmnd->host_scribble = NULL;
312 	cmnd->SCp.ptr = (char *)&wq;
313 	cmnd->SCp.Status = 0;
314 	bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
315 	bfa_tskim_start(tskim, bfa_itnim,
316 			    bfad_int_to_lun(cmnd->device->lun),
317 			    FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
318 	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
319 
320 	wait_event(wq, test_bit(IO_DONE_BIT,
321 			(unsigned long *)&cmnd->SCp.Status));
322 
323 	task_status = cmnd->SCp.Status >> 1;
324 	if (task_status != BFI_TSKIM_STS_OK) {
325 		BFA_DEV_PRINTF(bfad, BFA_ERR, "LUN reset failure, status: %d\n",
326 			       task_status);
327 		rc = FAILED;
328 	}
329 
330 out:
331 	return rc;
332 }
333 
334 /**
335  * Scsi_Host template entry, resets the bus and abort all commands.
336  */
337 static int
338 bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd)
339 {
340 	struct Scsi_Host *shost = cmnd->device->host;
341 	struct bfad_im_port_s *im_port =
342 				(struct bfad_im_port_s *) shost->hostdata[0];
343 	struct bfad_s         *bfad = im_port->bfad;
344 	struct bfad_itnim_s   *itnim;
345 	unsigned long   flags;
346 	u32        i, rc, err_cnt = 0;
347 	DECLARE_WAIT_QUEUE_HEAD(wq);
348 	enum bfi_tskim_status task_status;
349 
350 	spin_lock_irqsave(&bfad->bfad_lock, flags);
351 	for (i = 0; i < MAX_FCP_TARGET; i++) {
352 		itnim = bfad_os_get_itnim(im_port, i);
353 		if (itnim) {
354 			cmnd->SCp.ptr = (char *)&wq;
355 			rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
356 			if (rc != BFA_STATUS_OK) {
357 				err_cnt++;
358 				continue;
359 			}
360 
361 			/* wait target reset to complete */
362 			spin_unlock_irqrestore(&bfad->bfad_lock, flags);
363 			wait_event(wq, test_bit(IO_DONE_BIT,
364 					(unsigned long *)&cmnd->SCp.Status));
365 			spin_lock_irqsave(&bfad->bfad_lock, flags);
366 
367 			task_status = cmnd->SCp.Status >> 1;
368 			if (task_status != BFI_TSKIM_STS_OK) {
369 				BFA_DEV_PRINTF(bfad, BFA_ERR,
370 					"target reset failure,"
371 					" status: %d\n", task_status);
372 				err_cnt++;
373 			}
374 		}
375 	}
376 	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
377 
378 	if (err_cnt)
379 		return FAILED;
380 
381 	return SUCCESS;
382 }
383 
384 /**
385  * Scsi_Host template entry slave_destroy.
386  */
387 static void
388 bfad_im_slave_destroy(struct scsi_device *sdev)
389 {
390 	sdev->hostdata = NULL;
391 	return;
392 }
393 
394 /**
395  *  BFA FCS itnim callbacks
396  */
397 
398 /**
399  * BFA FCS itnim alloc callback, after successful PRLI
400  * Context: Interrupt
401  */
402 void
403 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
404 		    struct bfad_itnim_s **itnim_drv)
405 {
406 	*itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
407 	if (*itnim_drv == NULL)
408 		return;
409 
410 	(*itnim_drv)->im = bfad->im;
411 	*itnim = &(*itnim_drv)->fcs_itnim;
412 	(*itnim_drv)->state = ITNIM_STATE_NONE;
413 
414 	/*
415 	 * Initiaze the itnim_work
416 	 */
417 	INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
418 	bfad->bfad_flags |= BFAD_RPORT_ONLINE;
419 }
420 
421 /**
422  * BFA FCS itnim free callback.
423  * Context: Interrupt. bfad_lock is held
424  */
425 void
426 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
427 {
428 	struct bfad_port_s    *port;
429 	wwn_t wwpn;
430 	u32 fcid;
431 	char wwpn_str[32], fcid_str[16];
432 
433 	/* online to free state transtion should not happen */
434 	bfa_assert(itnim_drv->state != ITNIM_STATE_ONLINE);
435 
436 	itnim_drv->queue_work = 1;
437 	/* offline request is not yet done, use the same request to free */
438 	if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
439 		itnim_drv->queue_work = 0;
440 
441 	itnim_drv->state = ITNIM_STATE_FREE;
442 	port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
443 	itnim_drv->im_port = port->im_port;
444 	wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
445 	fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
446 	wwn2str(wwpn_str, wwpn);
447 	fcid2str(fcid_str, fcid);
448 	bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_FREE,
449 		port->im_port->shost->host_no,
450 		fcid_str, wwpn_str);
451 	bfad_os_itnim_process(itnim_drv);
452 }
453 
454 /**
455  * BFA FCS itnim online callback.
456  * Context: Interrupt. bfad_lock is held
457  */
458 void
459 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
460 {
461 	struct bfad_port_s    *port;
462 
463 	itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
464 	port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
465 	itnim_drv->state = ITNIM_STATE_ONLINE;
466 	itnim_drv->queue_work = 1;
467 	itnim_drv->im_port = port->im_port;
468 	bfad_os_itnim_process(itnim_drv);
469 }
470 
471 /**
472  * BFA FCS itnim offline callback.
473  * Context: Interrupt. bfad_lock is held
474  */
475 void
476 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
477 {
478 	struct bfad_port_s    *port;
479 	struct bfad_s *bfad;
480 
481 	port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
482 	bfad = port->bfad;
483 	if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
484 		 (port->flags & BFAD_PORT_DELETE)) {
485 		itnim_drv->state = ITNIM_STATE_OFFLINE;
486 		return;
487 	}
488 	itnim_drv->im_port = port->im_port;
489 	itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
490 	itnim_drv->queue_work = 1;
491 	bfad_os_itnim_process(itnim_drv);
492 }
493 
494 /**
495  * BFA FCS itnim timeout callback.
496  * Context: Interrupt. bfad_lock is held
497  */
498 void bfa_fcb_itnim_tov(struct bfad_itnim_s *itnim)
499 {
500 	itnim->state = ITNIM_STATE_TIMEOUT;
501 }
502 
503 /**
504  * Path TOV processing begin notification -- dummy for linux
505  */
506 void
507 bfa_fcb_itnim_tov_begin(struct bfad_itnim_s *itnim)
508 {
509 }
510 
511 
512 
513 /**
514  * Allocate a Scsi_Host for a port.
515  */
516 int
517 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
518 {
519 	int error = 1;
520 
521 	if (!idr_pre_get(&bfad_im_port_index, GFP_KERNEL)) {
522 		printk(KERN_WARNING "idr_pre_get failure\n");
523 		goto out;
524 	}
525 
526 	error = idr_get_new(&bfad_im_port_index, im_port,
527 					 &im_port->idr_id);
528 	if (error) {
529 		printk(KERN_WARNING "idr_get_new failure\n");
530 		goto out;
531 	}
532 
533 	im_port->shost = bfad_os_scsi_host_alloc(im_port, bfad);
534 	if (!im_port->shost) {
535 		error = 1;
536 		goto out_free_idr;
537 	}
538 
539 	im_port->shost->hostdata[0] = (unsigned long)im_port;
540 	im_port->shost->unique_id = im_port->idr_id;
541 	im_port->shost->this_id = -1;
542 	im_port->shost->max_id = MAX_FCP_TARGET;
543 	im_port->shost->max_lun = MAX_FCP_LUN;
544 	im_port->shost->max_cmd_len = 16;
545 	im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
546 	im_port->shost->transportt = bfad_im_scsi_transport_template;
547 
548 	error = bfad_os_scsi_add_host(im_port->shost, im_port, bfad);
549 	if (error) {
550 		printk(KERN_WARNING "bfad_os_scsi_add_host failure %d\n",
551 							error);
552 		goto out_fc_rel;
553 	}
554 
555 	/* setup host fixed attribute if the lk supports */
556 	bfad_os_fc_host_init(im_port);
557 
558 	return 0;
559 
560 out_fc_rel:
561 	scsi_host_put(im_port->shost);
562 out_free_idr:
563 	idr_remove(&bfad_im_port_index, im_port->idr_id);
564 out:
565 	return error;
566 }
567 
568 void
569 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
570 {
571 	unsigned long flags;
572 
573 	bfa_trc(bfad, bfad->inst_no);
574 	bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_HOST_FREE,
575 			im_port->shost->host_no);
576 
577 	fc_remove_host(im_port->shost);
578 
579 	scsi_remove_host(im_port->shost);
580 	scsi_host_put(im_port->shost);
581 
582 	spin_lock_irqsave(&bfad->bfad_lock, flags);
583 	idr_remove(&bfad_im_port_index, im_port->idr_id);
584 	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
585 }
586 
587 static void
588 bfad_im_port_delete_handler(struct work_struct *work)
589 {
590 	struct bfad_im_port_s *im_port =
591 		container_of(work, struct bfad_im_port_s, port_delete_work);
592 
593 	bfad_im_scsi_host_free(im_port->bfad, im_port);
594 	bfad_im_port_clean(im_port);
595 	kfree(im_port);
596 }
597 
598 bfa_status_t
599 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
600 {
601 	int             rc = BFA_STATUS_OK;
602 	struct bfad_im_port_s *im_port;
603 
604 	im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
605 	if (im_port == NULL) {
606 		rc = BFA_STATUS_ENOMEM;
607 		goto ext;
608 	}
609 	port->im_port = im_port;
610 	im_port->port = port;
611 	im_port->bfad = bfad;
612 
613 	INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
614 	INIT_LIST_HEAD(&im_port->itnim_mapped_list);
615 	INIT_LIST_HEAD(&im_port->binding_list);
616 
617 ext:
618 	return rc;
619 }
620 
621 void
622 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
623 {
624 	struct bfad_im_port_s *im_port = port->im_port;
625 
626 	queue_work(bfad->im->drv_workq,
627 				&im_port->port_delete_work);
628 }
629 
630 void
631 bfad_im_port_clean(struct bfad_im_port_s *im_port)
632 {
633 	struct bfad_fcp_binding *bp, *bp_new;
634 	unsigned long flags;
635 	struct bfad_s *bfad =  im_port->bfad;
636 
637 	spin_lock_irqsave(&bfad->bfad_lock, flags);
638 	list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
639 					list_entry) {
640 		list_del(&bp->list_entry);
641 		kfree(bp);
642 	}
643 
644 	/* the itnim_mapped_list must be empty at this time */
645 	bfa_assert(list_empty(&im_port->itnim_mapped_list));
646 
647 	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
648 }
649 
650 void
651 bfad_im_port_online(struct bfad_s *bfad, struct bfad_port_s *port)
652 {
653 }
654 
655 void
656 bfad_im_port_offline(struct bfad_s *bfad, struct bfad_port_s *port)
657 {
658 }
659 
660 bfa_status_t
661 bfad_im_probe(struct bfad_s *bfad)
662 {
663 	struct bfad_im_s      *im;
664 	bfa_status_t    rc = BFA_STATUS_OK;
665 
666 	im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
667 	if (im == NULL) {
668 		rc = BFA_STATUS_ENOMEM;
669 		goto ext;
670 	}
671 
672 	bfad->im = im;
673 	im->bfad = bfad;
674 
675 	if (bfad_os_thread_workq(bfad) != BFA_STATUS_OK) {
676 		kfree(im);
677 		rc = BFA_STATUS_FAILED;
678 	}
679 
680 ext:
681 	return rc;
682 }
683 
684 void
685 bfad_im_probe_undo(struct bfad_s *bfad)
686 {
687 	if (bfad->im) {
688 		bfad_os_destroy_workq(bfad->im);
689 		kfree(bfad->im);
690 		bfad->im = NULL;
691 	}
692 }
693 
694 
695 
696 
697 int
698 bfad_os_scsi_add_host(struct Scsi_Host *shost, struct bfad_im_port_s *im_port,
699 			struct bfad_s *bfad)
700 {
701     struct device *dev;
702 
703     if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
704 		dev = &bfad->pcidev->dev;
705     else
706 		dev = &bfad->pport.im_port->shost->shost_gendev;
707 
708     return scsi_add_host(shost, dev);
709 }
710 
711 struct Scsi_Host *
712 bfad_os_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
713 {
714 	struct scsi_host_template *sht;
715 
716 	if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
717 		sht = &bfad_im_scsi_host_template;
718 	else
719 		sht = &bfad_im_vport_template;
720 
721 	sht->sg_tablesize = bfad->cfg_data.io_max_sge;
722 
723 	return scsi_host_alloc(sht, sizeof(unsigned long));
724 }
725 
726 void
727 bfad_os_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
728 {
729 	flush_workqueue(bfad->im->drv_workq);
730 	bfad_im_scsi_host_free(im_port->bfad, im_port);
731 	bfad_im_port_clean(im_port);
732 	kfree(im_port);
733 }
734 
735 void
736 bfad_os_destroy_workq(struct bfad_im_s *im)
737 {
738 	if (im && im->drv_workq) {
739 		destroy_workqueue(im->drv_workq);
740 		im->drv_workq = NULL;
741 	}
742 }
743 
744 bfa_status_t
745 bfad_os_thread_workq(struct bfad_s *bfad)
746 {
747 	struct bfad_im_s      *im = bfad->im;
748 
749 	bfa_trc(bfad, 0);
750 	snprintf(im->drv_workq_name, BFAD_KOBJ_NAME_LEN, "bfad_wq_%d",
751 		 bfad->inst_no);
752 	im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
753 	if (!im->drv_workq)
754 		return BFA_STATUS_FAILED;
755 
756 	return BFA_STATUS_OK;
757 }
758 
759 /**
760  * Scsi_Host template entry.
761  *
762  * Description:
763  * OS entry point to adjust the queue_depths on a per-device basis.
764  * Called once per device during the bus scan.
765  * Return non-zero if fails.
766  */
767 static int
768 bfad_im_slave_configure(struct scsi_device *sdev)
769 {
770 	if (sdev->tagged_supported)
771 		scsi_activate_tcq(sdev, bfa_lun_queue_depth);
772 	else
773 		scsi_deactivate_tcq(sdev, bfa_lun_queue_depth);
774 
775 	return 0;
776 }
777 
778 struct scsi_host_template bfad_im_scsi_host_template = {
779 	.module = THIS_MODULE,
780 	.name = BFAD_DRIVER_NAME,
781 	.info = bfad_im_info,
782 	.queuecommand = bfad_im_queuecommand,
783 	.eh_abort_handler = bfad_im_abort_handler,
784 	.eh_device_reset_handler = bfad_im_reset_lun_handler,
785 	.eh_bus_reset_handler = bfad_im_reset_bus_handler,
786 
787 	.slave_alloc = bfad_im_slave_alloc,
788 	.slave_configure = bfad_im_slave_configure,
789 	.slave_destroy = bfad_im_slave_destroy,
790 
791 	.this_id = -1,
792 	.sg_tablesize = BFAD_IO_MAX_SGE,
793 	.cmd_per_lun = 3,
794 	.use_clustering = ENABLE_CLUSTERING,
795 	.shost_attrs = bfad_im_host_attrs,
796 	.max_sectors = 0xFFFF,
797 };
798 
799 struct scsi_host_template bfad_im_vport_template = {
800 	.module = THIS_MODULE,
801 	.name = BFAD_DRIVER_NAME,
802 	.info = bfad_im_info,
803 	.queuecommand = bfad_im_queuecommand,
804 	.eh_abort_handler = bfad_im_abort_handler,
805 	.eh_device_reset_handler = bfad_im_reset_lun_handler,
806 	.eh_bus_reset_handler = bfad_im_reset_bus_handler,
807 
808 	.slave_alloc = bfad_im_slave_alloc,
809 	.slave_configure = bfad_im_slave_configure,
810 	.slave_destroy = bfad_im_slave_destroy,
811 
812 	.this_id = -1,
813 	.sg_tablesize = BFAD_IO_MAX_SGE,
814 	.cmd_per_lun = 3,
815 	.use_clustering = ENABLE_CLUSTERING,
816 	.shost_attrs = bfad_im_vport_attrs,
817 	.max_sectors = 0xFFFF,
818 };
819 
820 void
821 bfad_im_probe_post(struct bfad_im_s *im)
822 {
823 	flush_workqueue(im->drv_workq);
824 }
825 
826 bfa_status_t
827 bfad_im_module_init(void)
828 {
829 	bfad_im_scsi_transport_template =
830 		fc_attach_transport(&bfad_im_fc_function_template);
831 	if (!bfad_im_scsi_transport_template)
832 		return BFA_STATUS_ENOMEM;
833 
834 	return BFA_STATUS_OK;
835 }
836 
837 void
838 bfad_im_module_exit(void)
839 {
840 	if (bfad_im_scsi_transport_template)
841 		fc_release_transport(bfad_im_scsi_transport_template);
842 }
843 
844 void
845 bfad_os_itnim_process(struct bfad_itnim_s *itnim_drv)
846 {
847 	struct bfad_im_s      *im = itnim_drv->im;
848 
849 	if (itnim_drv->queue_work)
850 		queue_work(im->drv_workq, &itnim_drv->itnim_work);
851 }
852 
853 void
854 bfad_os_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
855 {
856 	struct scsi_device *tmp_sdev;
857 
858 	if (((jiffies - itnim->last_ramp_up_time) >
859 		BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
860 		((jiffies - itnim->last_queue_full_time) >
861 		BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
862 		shost_for_each_device(tmp_sdev, sdev->host) {
863 			if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
864 				if (tmp_sdev->id != sdev->id)
865 					continue;
866 				if (tmp_sdev->ordered_tags)
867 					scsi_adjust_queue_depth(tmp_sdev,
868 						MSG_ORDERED_TAG,
869 						tmp_sdev->queue_depth + 1);
870 				else
871 					scsi_adjust_queue_depth(tmp_sdev,
872 						MSG_SIMPLE_TAG,
873 						tmp_sdev->queue_depth + 1);
874 
875 				itnim->last_ramp_up_time = jiffies;
876 			}
877 		}
878 	}
879 }
880 
881 void
882 bfad_os_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
883 {
884 	struct scsi_device *tmp_sdev;
885 
886 	itnim->last_queue_full_time = jiffies;
887 
888 	shost_for_each_device(tmp_sdev, sdev->host) {
889 		if (tmp_sdev->id != sdev->id)
890 			continue;
891 		scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
892 	}
893 }
894 
895 
896 
897 
898 struct bfad_itnim_s *
899 bfad_os_get_itnim(struct bfad_im_port_s *im_port, int id)
900 {
901 	struct bfad_itnim_s   *itnim = NULL;
902 
903 	/* Search the mapped list for this target ID */
904 	list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
905 		if (id == itnim->scsi_tgt_id)
906 			return itnim;
907 	}
908 
909 	return NULL;
910 }
911 
912 /**
913  * Scsi_Host template entry slave_alloc
914  */
915 static int
916 bfad_im_slave_alloc(struct scsi_device *sdev)
917 {
918 	struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
919 
920 	if (!rport || fc_remote_port_chkready(rport))
921 		return -ENXIO;
922 
923 	sdev->hostdata = rport->dd_data;
924 
925 	return 0;
926 }
927 
928 void
929 bfad_os_fc_host_init(struct bfad_im_port_s *im_port)
930 {
931 	struct Scsi_Host *host = im_port->shost;
932 	struct bfad_s         *bfad = im_port->bfad;
933 	struct bfad_port_s    *port = im_port->port;
934 	union attr {
935 		struct bfa_pport_attr_s pattr;
936 		struct bfa_ioc_attr_s  ioc_attr;
937 	} attr;
938 
939 	fc_host_node_name(host) =
940 		bfa_os_htonll((bfa_fcs_port_get_nwwn(port->fcs_port)));
941 	fc_host_port_name(host) =
942 		bfa_os_htonll((bfa_fcs_port_get_pwwn(port->fcs_port)));
943 
944 	fc_host_supported_classes(host) = FC_COS_CLASS3;
945 
946 	memset(fc_host_supported_fc4s(host), 0,
947 	       sizeof(fc_host_supported_fc4s(host)));
948 	if (bfad_supported_fc4s & (BFA_PORT_ROLE_FCP_IM | BFA_PORT_ROLE_FCP_TM))
949 		/* For FCP type 0x08 */
950 		fc_host_supported_fc4s(host)[2] = 1;
951 	if (bfad_supported_fc4s & BFA_PORT_ROLE_FCP_IPFC)
952 		/* For LLC/SNAP type 0x05 */
953 		fc_host_supported_fc4s(host)[3] = 0x20;
954 	/* For fibre channel services type 0x20 */
955 	fc_host_supported_fc4s(host)[7] = 1;
956 
957 	memset(&attr.ioc_attr, 0, sizeof(attr.ioc_attr));
958 	bfa_get_attr(&bfad->bfa, &attr.ioc_attr);
959 	sprintf(fc_host_symbolic_name(host), "Brocade %s FV%s DV%s",
960 		attr.ioc_attr.adapter_attr.model,
961 		attr.ioc_attr.adapter_attr.fw_ver, BFAD_DRIVER_VERSION);
962 
963 	fc_host_supported_speeds(host) = 0;
964 	fc_host_supported_speeds(host) |=
965 		FC_PORTSPEED_8GBIT | FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
966 		FC_PORTSPEED_1GBIT;
967 
968 	memset(&attr.pattr, 0, sizeof(attr.pattr));
969 	bfa_pport_get_attr(&bfad->bfa, &attr.pattr);
970 	fc_host_maxframe_size(host) = attr.pattr.pport_cfg.maxfrsize;
971 }
972 
973 static void
974 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
975 {
976 	struct fc_rport_identifiers rport_ids;
977 	struct fc_rport *fc_rport;
978 	struct bfad_itnim_data_s *itnim_data;
979 
980 	rport_ids.node_name =
981 		bfa_os_htonll(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
982 	rport_ids.port_name =
983 		bfa_os_htonll(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
984 	rport_ids.port_id =
985 		bfa_os_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
986 	rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
987 
988 	itnim->fc_rport = fc_rport =
989 		fc_remote_port_add(im_port->shost, 0, &rport_ids);
990 
991 	if (!fc_rport)
992 		return;
993 
994 	fc_rport->maxframe_size =
995 		bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
996 	fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
997 
998 	itnim_data = fc_rport->dd_data;
999 	itnim_data->itnim = itnim;
1000 
1001 	rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1002 
1003 	if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1004 		fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1005 
1006 	if ((fc_rport->scsi_target_id != -1)
1007 	    && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1008 		itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1009 
1010 	return;
1011 }
1012 
1013 /**
1014  * Work queue handler using FC transport service
1015 * Context: kernel
1016  */
1017 static void
1018 bfad_im_itnim_work_handler(struct work_struct *work)
1019 {
1020 	struct bfad_itnim_s   *itnim = container_of(work, struct bfad_itnim_s,
1021 							itnim_work);
1022 	struct bfad_im_s      *im = itnim->im;
1023 	struct bfad_s         *bfad = im->bfad;
1024 	struct bfad_im_port_s *im_port;
1025 	unsigned long   flags;
1026 	struct fc_rport *fc_rport;
1027 	wwn_t wwpn;
1028 	u32 fcid;
1029 	char wwpn_str[32], fcid_str[16];
1030 
1031 	spin_lock_irqsave(&bfad->bfad_lock, flags);
1032 	im_port = itnim->im_port;
1033 	bfa_trc(bfad, itnim->state);
1034 	switch (itnim->state) {
1035 	case ITNIM_STATE_ONLINE:
1036 		if (!itnim->fc_rport) {
1037 			spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1038 			bfad_im_fc_rport_add(im_port, itnim);
1039 			spin_lock_irqsave(&bfad->bfad_lock, flags);
1040 			wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1041 			fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1042 			wwn2str(wwpn_str, wwpn);
1043 			fcid2str(fcid_str, fcid);
1044 			list_add_tail(&itnim->list_entry,
1045 				&im_port->itnim_mapped_list);
1046 			bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_ONLINE,
1047 				im_port->shost->host_no,
1048 				itnim->scsi_tgt_id,
1049 				fcid_str, wwpn_str);
1050 		} else {
1051 			printk(KERN_WARNING
1052 				"%s: itnim %llx is already in online state\n",
1053 				__func__,
1054 				bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1055 		}
1056 
1057 		break;
1058 	case ITNIM_STATE_OFFLINE_PENDING:
1059 		itnim->state = ITNIM_STATE_OFFLINE;
1060 		if (itnim->fc_rport) {
1061 			fc_rport = itnim->fc_rport;
1062 			((struct bfad_itnim_data_s *)
1063 				fc_rport->dd_data)->itnim = NULL;
1064 			itnim->fc_rport = NULL;
1065 			if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1066 				spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1067 				fc_rport->dev_loss_tmo =
1068 					bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1069 				fc_remote_port_delete(fc_rport);
1070 				spin_lock_irqsave(&bfad->bfad_lock, flags);
1071 			}
1072 			wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1073 			fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1074 			wwn2str(wwpn_str, wwpn);
1075 			fcid2str(fcid_str, fcid);
1076 			list_del(&itnim->list_entry);
1077 			bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_OFFLINE,
1078 				im_port->shost->host_no,
1079 				itnim->scsi_tgt_id,
1080 				fcid_str, wwpn_str);
1081 		}
1082 		break;
1083 	case ITNIM_STATE_FREE:
1084 		if (itnim->fc_rport) {
1085 			fc_rport = itnim->fc_rport;
1086 			((struct bfad_itnim_data_s *)
1087 				fc_rport->dd_data)->itnim = NULL;
1088 			itnim->fc_rport = NULL;
1089 			if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1090 				spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1091 				fc_rport->dev_loss_tmo =
1092 					bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1093 				fc_remote_port_delete(fc_rport);
1094 				spin_lock_irqsave(&bfad->bfad_lock, flags);
1095 			}
1096 			list_del(&itnim->list_entry);
1097 		}
1098 
1099 		kfree(itnim);
1100 		break;
1101 	default:
1102 		bfa_assert(0);
1103 		break;
1104 	}
1105 
1106 	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1107 }
1108 
1109 /**
1110  * Scsi_Host template entry, queue a SCSI command to the BFAD.
1111  */
1112 static int
1113 bfad_im_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1114 {
1115 	struct bfad_im_port_s *im_port =
1116 		(struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1117 	struct bfad_s         *bfad = im_port->bfad;
1118 	struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1119 	struct bfad_itnim_s   *itnim;
1120 	struct bfa_ioim_s *hal_io;
1121 	unsigned long   flags;
1122 	int             rc;
1123 	s16        sg_cnt = 0;
1124 	struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1125 
1126 	rc = fc_remote_port_chkready(rport);
1127 	if (rc) {
1128 		cmnd->result = rc;
1129 		done(cmnd);
1130 		return 0;
1131 	}
1132 
1133 	sg_cnt = scsi_dma_map(cmnd);
1134 
1135 	if (sg_cnt < 0)
1136 		return SCSI_MLQUEUE_HOST_BUSY;
1137 
1138 	cmnd->scsi_done = done;
1139 
1140 	spin_lock_irqsave(&bfad->bfad_lock, flags);
1141 	if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1142 		printk(KERN_WARNING
1143 			"bfad%d, queuecommand %p %x failed, BFA stopped\n",
1144 		       bfad->inst_no, cmnd, cmnd->cmnd[0]);
1145 		cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1146 		goto out_fail_cmd;
1147 	}
1148 
1149 	itnim = itnim_data->itnim;
1150 	if (!itnim) {
1151 		cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1152 		goto out_fail_cmd;
1153 	}
1154 
1155 	hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1156 				    itnim->bfa_itnim, sg_cnt);
1157 	if (!hal_io) {
1158 		printk(KERN_WARNING "hal_io failure\n");
1159 		spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1160 		scsi_dma_unmap(cmnd);
1161 		return SCSI_MLQUEUE_HOST_BUSY;
1162 	}
1163 
1164 	cmnd->host_scribble = (char *)hal_io;
1165 	bfa_trc_fp(bfad, hal_io->iotag);
1166 	bfa_ioim_start(hal_io);
1167 	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1168 
1169 	return 0;
1170 
1171 out_fail_cmd:
1172 	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1173 	scsi_dma_unmap(cmnd);
1174 	if (done)
1175 		done(cmnd);
1176 
1177 	return 0;
1178 }
1179 
1180 void
1181 bfad_os_rport_online_wait(struct bfad_s *bfad)
1182 {
1183 	int i;
1184 	int rport_delay = 10;
1185 
1186 	for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1187 		 && i < bfa_linkup_delay; i++)
1188 		schedule_timeout_uninterruptible(HZ);
1189 
1190 	if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1191 		rport_delay = rport_delay < bfa_linkup_delay ?
1192 				 rport_delay : bfa_linkup_delay;
1193 		for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1194 			 && i < rport_delay; i++)
1195 			schedule_timeout_uninterruptible(HZ);
1196 
1197 		if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE))
1198 			schedule_timeout_uninterruptible(rport_delay * HZ);
1199 	}
1200 }
1201 
1202 int
1203 bfad_os_get_linkup_delay(struct bfad_s *bfad)
1204 {
1205 
1206 	u8         nwwns = 0;
1207 	wwn_t           *wwns;
1208 	int             ldelay;
1209 
1210 	/*
1211 	 * Querying for the boot target port wwns
1212 	 * -- read from boot information in flash.
1213 	 * If nwwns > 0 => boot over SAN and set bfa_linkup_delay = 30
1214 	 * else => local boot machine set bfa_linkup_delay = 10
1215 	 */
1216 
1217 	bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, &wwns);
1218 
1219 	if (nwwns > 0) {
1220 		/* If boot over SAN; linkup_delay = 30sec */
1221 		ldelay = 30;
1222 	} else {
1223 		/* If local boot; linkup_delay = 10sec */
1224 		ldelay = 0;
1225 	}
1226 
1227 	return ldelay;
1228 }
1229 
1230 
1231