blob: 9967f9c148510f2958b06e414b0d218ecc46759b [file] [log] [blame]
Jing Huang7725ccf2009-09-23 17:46:15 -07001/*
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07002 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
Jing Huang7725ccf2009-09-23 17:46:15 -07003 * 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
Jing Huang5fbe25c2010-10-18 17:17:23 -070018/*
Jing Huang7725ccf2009-09-23 17:46:15 -070019 * bfad_im.c Linux driver IM module.
20 */
21
Paul Gortmaker09703662011-05-27 09:37:25 -040022#include <linux/export.h>
23
Jing Huang7725ccf2009-09-23 17:46:15 -070024#include "bfad_drv.h"
25#include "bfad_im.h"
Krishna Gudipatia36c61f2010-09-15 11:50:55 -070026#include "bfa_fcs.h"
Jing Huang7725ccf2009-09-23 17:46:15 -070027
28BFA_TRC_FILE(LDRV, IM);
29
30DEFINE_IDR(bfad_im_port_index);
31struct scsi_transport_template *bfad_im_scsi_transport_template;
Jing Huangb5042932010-03-19 11:05:39 -070032struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
Jing Huang7725ccf2009-09-23 17:46:15 -070033static void bfad_im_itnim_work_handler(struct work_struct *work);
Jeff Garzikf2812332010-11-16 02:10:29 -050034static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd);
Jing Huang7725ccf2009-09-23 17:46:15 -070035static int bfad_im_slave_alloc(struct scsi_device *sdev);
Krishna Gudipatia36c61f2010-09-15 11:50:55 -070036static void bfad_im_fc_rport_add(struct bfad_im_port_s *im_port,
37 struct bfad_itnim_s *itnim);
Jing Huang7725ccf2009-09-23 17:46:15 -070038
39void
40bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
41 enum bfi_ioim_status io_status, u8 scsi_status,
42 int sns_len, u8 *sns_info, s32 residue)
43{
44 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
45 struct bfad_s *bfad = drv;
46 struct bfad_itnim_data_s *itnim_data;
47 struct bfad_itnim_s *itnim;
Krishna Gudipati95aa0602010-03-05 19:38:27 -080048 u8 host_status = DID_OK;
Jing Huang7725ccf2009-09-23 17:46:15 -070049
50 switch (io_status) {
51 case BFI_IOIM_STS_OK:
52 bfa_trc(bfad, scsi_status);
Jing Huang7725ccf2009-09-23 17:46:15 -070053 scsi_set_resid(cmnd, 0);
54
55 if (sns_len > 0) {
56 bfa_trc(bfad, sns_len);
57 if (sns_len > SCSI_SENSE_BUFFERSIZE)
58 sns_len = SCSI_SENSE_BUFFERSIZE;
59 memcpy(cmnd->sense_buffer, sns_info, sns_len);
60 }
Krishna Gudipatia36c61f2010-09-15 11:50:55 -070061
Krishna Gudipati95aa0602010-03-05 19:38:27 -080062 if (residue > 0) {
63 bfa_trc(bfad, residue);
Jing Huang7725ccf2009-09-23 17:46:15 -070064 scsi_set_resid(cmnd, residue);
Krishna Gudipati95aa0602010-03-05 19:38:27 -080065 if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&
66 (scsi_bufflen(cmnd) - residue) <
67 cmnd->underflow) {
68 bfa_trc(bfad, 0);
69 host_status = DID_ERROR;
70 }
71 }
72 cmnd->result = ScsiResult(host_status, scsi_status);
73
Jing Huang7725ccf2009-09-23 17:46:15 -070074 break;
75
76 case BFI_IOIM_STS_ABORTED:
77 case BFI_IOIM_STS_TIMEDOUT:
78 case BFI_IOIM_STS_PATHTOV:
79 default:
Krishna Gudipatia36c61f2010-09-15 11:50:55 -070080 host_status = DID_ERROR;
81 cmnd->result = ScsiResult(host_status, 0);
Jing Huang7725ccf2009-09-23 17:46:15 -070082 }
83
84 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
85 if (cmnd->device->host != NULL)
86 scsi_dma_unmap(cmnd);
87
88 cmnd->host_scribble = NULL;
89 bfa_trc(bfad, cmnd->result);
90
91 itnim_data = cmnd->device->hostdata;
92 if (itnim_data) {
93 itnim = itnim_data->itnim;
94 if (!cmnd->result && itnim &&
95 (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
96 /* Queue depth adjustment for good status completion */
Maggie Zhangf16a1752010-12-09 19:12:32 -080097 bfad_ramp_up_qdepth(itnim, cmnd->device);
Jing Huang7725ccf2009-09-23 17:46:15 -070098 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
99 /* qfull handling */
Maggie Zhangf16a1752010-12-09 19:12:32 -0800100 bfad_handle_qfull(itnim, cmnd->device);
Jing Huang7725ccf2009-09-23 17:46:15 -0700101 }
102 }
103
104 cmnd->scsi_done(cmnd);
105}
106
107void
108bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
109{
110 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
111 struct bfad_itnim_data_s *itnim_data;
112 struct bfad_itnim_s *itnim;
113
114 cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD);
115
116 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
117 if (cmnd->device->host != NULL)
118 scsi_dma_unmap(cmnd);
119
120 cmnd->host_scribble = NULL;
121
122 /* Queue depth adjustment */
123 if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
124 itnim_data = cmnd->device->hostdata;
125 if (itnim_data) {
126 itnim = itnim_data->itnim;
127 if (itnim)
Maggie Zhangf16a1752010-12-09 19:12:32 -0800128 bfad_ramp_up_qdepth(itnim, cmnd->device);
Jing Huang7725ccf2009-09-23 17:46:15 -0700129 }
130 }
131
132 cmnd->scsi_done(cmnd);
133}
134
135void
136bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
137{
138 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
139 struct bfad_s *bfad = drv;
140
141 cmnd->result = ScsiResult(DID_ERROR, 0);
142
143 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
144 if (cmnd->device->host != NULL)
145 scsi_dma_unmap(cmnd);
146
147 bfa_trc(bfad, cmnd->result);
148 cmnd->host_scribble = NULL;
149}
150
151void
152bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
153 enum bfi_tskim_status tsk_status)
154{
155 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
156 wait_queue_head_t *wq;
157
158 cmnd->SCp.Status |= tsk_status << 1;
159 set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
160 wq = (wait_queue_head_t *) cmnd->SCp.ptr;
161 cmnd->SCp.ptr = NULL;
162
163 if (wq)
164 wake_up(wq);
165}
166
Jing Huang5fbe25c2010-10-18 17:17:23 -0700167/*
Jing Huang7725ccf2009-09-23 17:46:15 -0700168 * Scsi_Host_template SCSI host template
169 */
Jing Huang5fbe25c2010-10-18 17:17:23 -0700170/*
Jing Huang7725ccf2009-09-23 17:46:15 -0700171 * Scsi_Host template entry, returns BFAD PCI info.
172 */
173static const char *
174bfad_im_info(struct Scsi_Host *shost)
175{
176 static char bfa_buf[256];
177 struct bfad_im_port_s *im_port =
178 (struct bfad_im_port_s *) shost->hostdata[0];
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700179 struct bfad_s *bfad = im_port->bfad;
Jing Huang7725ccf2009-09-23 17:46:15 -0700180
181 memset(bfa_buf, 0, sizeof(bfa_buf));
Krishna Gudipati75332a72011-06-13 15:54:31 -0700182 snprintf(bfa_buf, sizeof(bfa_buf),
183 "Brocade FC/FCOE Adapter, " "hwpath: %s driver: %s",
184 bfad->pci_name, BFAD_DRIVER_VERSION);
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700185
Jing Huang7725ccf2009-09-23 17:46:15 -0700186 return bfa_buf;
187}
188
Jing Huang5fbe25c2010-10-18 17:17:23 -0700189/*
Jing Huang7725ccf2009-09-23 17:46:15 -0700190 * Scsi_Host template entry, aborts the specified SCSI command.
191 *
192 * Returns: SUCCESS or FAILED.
193 */
194static int
195bfad_im_abort_handler(struct scsi_cmnd *cmnd)
196{
197 struct Scsi_Host *shost = cmnd->device->host;
198 struct bfad_im_port_s *im_port =
199 (struct bfad_im_port_s *) shost->hostdata[0];
200 struct bfad_s *bfad = im_port->bfad;
201 struct bfa_ioim_s *hal_io;
202 unsigned long flags;
203 u32 timeout;
204 int rc = FAILED;
205
206 spin_lock_irqsave(&bfad->bfad_lock, flags);
207 hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
208 if (!hal_io) {
Joe Perches9e03aa22013-09-03 13:45:58 -0700209 /* IO has been completed, return success */
Jing Huang7725ccf2009-09-23 17:46:15 -0700210 rc = SUCCESS;
211 goto out;
212 }
213 if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
214 rc = FAILED;
215 goto out;
216 }
217
218 bfa_trc(bfad, hal_io->iotag);
Jing Huang88166242010-12-09 17:11:53 -0800219 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
220 "scsi%d: abort cmnd %p iotag %x\n",
Jing Huang7725ccf2009-09-23 17:46:15 -0700221 im_port->shost->host_no, cmnd, hal_io->iotag);
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700222 (void) bfa_ioim_abort(hal_io);
Jing Huang7725ccf2009-09-23 17:46:15 -0700223 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
224
225 /* Need to wait until the command get aborted */
226 timeout = 10;
227 while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
228 set_current_state(TASK_UNINTERRUPTIBLE);
229 schedule_timeout(timeout);
230 if (timeout < 4 * HZ)
231 timeout *= 2;
232 }
233
234 cmnd->scsi_done(cmnd);
235 bfa_trc(bfad, hal_io->iotag);
Jing Huang88166242010-12-09 17:11:53 -0800236 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700237 "scsi%d: complete abort 0x%p iotag 0x%x\n",
Jing Huang7725ccf2009-09-23 17:46:15 -0700238 im_port->shost->host_no, cmnd, hal_io->iotag);
239 return SUCCESS;
240out:
241 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
242 return rc;
243}
244
245static bfa_status_t
246bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
247 struct bfad_itnim_s *itnim)
248{
249 struct bfa_tskim_s *tskim;
250 struct bfa_itnim_s *bfa_itnim;
251 bfa_status_t rc = BFA_STATUS_OK;
Maggie Zhangf3148782010-12-09 19:11:39 -0800252 struct scsi_lun scsilun;
Jing Huang7725ccf2009-09-23 17:46:15 -0700253
Jing Huang7725ccf2009-09-23 17:46:15 -0700254 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
255 if (!tskim) {
Jing Huang88166242010-12-09 17:11:53 -0800256 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700257 "target reset, fail to allocate tskim\n");
Jing Huang7725ccf2009-09-23 17:46:15 -0700258 rc = BFA_STATUS_FAILED;
259 goto out;
260 }
261
262 /*
263 * Set host_scribble to NULL to avoid aborting a task command if
264 * happens.
265 */
266 cmnd->host_scribble = NULL;
267 cmnd->SCp.Status = 0;
268 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
Maggie Zhangf3148782010-12-09 19:11:39 -0800269 memset(&scsilun, 0, sizeof(scsilun));
270 bfa_tskim_start(tskim, bfa_itnim, scsilun,
Jing Huang7725ccf2009-09-23 17:46:15 -0700271 FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
272out:
273 return rc;
274}
275
Jing Huang5fbe25c2010-10-18 17:17:23 -0700276/*
Jing Huang7725ccf2009-09-23 17:46:15 -0700277 * Scsi_Host template entry, resets a LUN and abort its all commands.
278 *
279 * Returns: SUCCESS or FAILED.
280 *
281 */
282static int
283bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
284{
285 struct Scsi_Host *shost = cmnd->device->host;
286 struct bfad_im_port_s *im_port =
287 (struct bfad_im_port_s *) shost->hostdata[0];
288 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
289 struct bfad_s *bfad = im_port->bfad;
290 struct bfa_tskim_s *tskim;
291 struct bfad_itnim_s *itnim;
292 struct bfa_itnim_s *bfa_itnim;
Yong Zhang6d154db2010-08-10 18:01:22 -0700293 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
Jing Huang7725ccf2009-09-23 17:46:15 -0700294 int rc = SUCCESS;
295 unsigned long flags;
296 enum bfi_tskim_status task_status;
Maggie Zhangf3148782010-12-09 19:11:39 -0800297 struct scsi_lun scsilun;
Jing Huang7725ccf2009-09-23 17:46:15 -0700298
299 spin_lock_irqsave(&bfad->bfad_lock, flags);
300 itnim = itnim_data->itnim;
301 if (!itnim) {
302 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
303 rc = FAILED;
304 goto out;
305 }
306
307 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
308 if (!tskim) {
Jing Huang88166242010-12-09 17:11:53 -0800309 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
Jing Huang7725ccf2009-09-23 17:46:15 -0700310 "LUN reset, fail to allocate tskim");
311 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
312 rc = FAILED;
313 goto out;
314 }
315
Jing Huang5fbe25c2010-10-18 17:17:23 -0700316 /*
Jing Huang7725ccf2009-09-23 17:46:15 -0700317 * Set host_scribble to NULL to avoid aborting a task command
318 * if happens.
319 */
320 cmnd->host_scribble = NULL;
321 cmnd->SCp.ptr = (char *)&wq;
322 cmnd->SCp.Status = 0;
323 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
Maggie Zhangf3148782010-12-09 19:11:39 -0800324 int_to_scsilun(cmnd->device->lun, &scsilun);
325 bfa_tskim_start(tskim, bfa_itnim, scsilun,
Jing Huang7725ccf2009-09-23 17:46:15 -0700326 FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
327 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
328
329 wait_event(wq, test_bit(IO_DONE_BIT,
330 (unsigned long *)&cmnd->SCp.Status));
331
332 task_status = cmnd->SCp.Status >> 1;
333 if (task_status != BFI_TSKIM_STS_OK) {
Jing Huang88166242010-12-09 17:11:53 -0800334 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700335 "LUN reset failure, status: %d\n", task_status);
Jing Huang7725ccf2009-09-23 17:46:15 -0700336 rc = FAILED;
337 }
338
339out:
340 return rc;
341}
342
Jing Huang5fbe25c2010-10-18 17:17:23 -0700343/*
Jing Huang7725ccf2009-09-23 17:46:15 -0700344 * Scsi_Host template entry, resets the bus and abort all commands.
345 */
346static int
347bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd)
348{
349 struct Scsi_Host *shost = cmnd->device->host;
350 struct bfad_im_port_s *im_port =
351 (struct bfad_im_port_s *) shost->hostdata[0];
352 struct bfad_s *bfad = im_port->bfad;
353 struct bfad_itnim_s *itnim;
354 unsigned long flags;
355 u32 i, rc, err_cnt = 0;
Yong Zhang6d154db2010-08-10 18:01:22 -0700356 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
Jing Huang7725ccf2009-09-23 17:46:15 -0700357 enum bfi_tskim_status task_status;
358
359 spin_lock_irqsave(&bfad->bfad_lock, flags);
360 for (i = 0; i < MAX_FCP_TARGET; i++) {
Maggie Zhangf16a1752010-12-09 19:12:32 -0800361 itnim = bfad_get_itnim(im_port, i);
Jing Huang7725ccf2009-09-23 17:46:15 -0700362 if (itnim) {
363 cmnd->SCp.ptr = (char *)&wq;
364 rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
365 if (rc != BFA_STATUS_OK) {
366 err_cnt++;
367 continue;
368 }
369
370 /* wait target reset to complete */
371 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
372 wait_event(wq, test_bit(IO_DONE_BIT,
373 (unsigned long *)&cmnd->SCp.Status));
374 spin_lock_irqsave(&bfad->bfad_lock, flags);
375
376 task_status = cmnd->SCp.Status >> 1;
377 if (task_status != BFI_TSKIM_STS_OK) {
Jing Huang88166242010-12-09 17:11:53 -0800378 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
Jing Huang7725ccf2009-09-23 17:46:15 -0700379 "target reset failure,"
380 " status: %d\n", task_status);
381 err_cnt++;
382 }
383 }
384 }
385 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
386
387 if (err_cnt)
388 return FAILED;
389
390 return SUCCESS;
391}
392
Jing Huang5fbe25c2010-10-18 17:17:23 -0700393/*
Jing Huang7725ccf2009-09-23 17:46:15 -0700394 * Scsi_Host template entry slave_destroy.
395 */
396static void
397bfad_im_slave_destroy(struct scsi_device *sdev)
398{
399 sdev->hostdata = NULL;
400 return;
401}
402
Jing Huang5fbe25c2010-10-18 17:17:23 -0700403/*
Jing Huang7725ccf2009-09-23 17:46:15 -0700404 * BFA FCS itnim callbacks
405 */
406
Jing Huang5fbe25c2010-10-18 17:17:23 -0700407/*
Jing Huang7725ccf2009-09-23 17:46:15 -0700408 * BFA FCS itnim alloc callback, after successful PRLI
409 * Context: Interrupt
410 */
411void
412bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
413 struct bfad_itnim_s **itnim_drv)
414{
415 *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
416 if (*itnim_drv == NULL)
417 return;
418
419 (*itnim_drv)->im = bfad->im;
420 *itnim = &(*itnim_drv)->fcs_itnim;
421 (*itnim_drv)->state = ITNIM_STATE_NONE;
422
423 /*
424 * Initiaze the itnim_work
425 */
426 INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
427 bfad->bfad_flags |= BFAD_RPORT_ONLINE;
428}
429
Jing Huang5fbe25c2010-10-18 17:17:23 -0700430/*
Jing Huang7725ccf2009-09-23 17:46:15 -0700431 * BFA FCS itnim free callback.
432 * Context: Interrupt. bfad_lock is held
433 */
434void
435bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
436{
437 struct bfad_port_s *port;
438 wwn_t wwpn;
439 u32 fcid;
440 char wwpn_str[32], fcid_str[16];
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700441 struct bfad_im_s *im = itnim_drv->im;
Jing Huang7725ccf2009-09-23 17:46:15 -0700442
443 /* online to free state transtion should not happen */
Jing Huangd4b671c2010-12-26 21:46:35 -0800444 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
Jing Huang7725ccf2009-09-23 17:46:15 -0700445
446 itnim_drv->queue_work = 1;
447 /* offline request is not yet done, use the same request to free */
448 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
449 itnim_drv->queue_work = 0;
450
451 itnim_drv->state = ITNIM_STATE_FREE;
452 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
453 itnim_drv->im_port = port->im_port;
454 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
455 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
456 wwn2str(wwpn_str, wwpn);
457 fcid2str(fcid_str, fcid);
Jing Huang88166242010-12-09 17:11:53 -0800458 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700459 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
Jing Huang7725ccf2009-09-23 17:46:15 -0700460 port->im_port->shost->host_no,
461 fcid_str, wwpn_str);
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700462
463 /* ITNIM processing */
464 if (itnim_drv->queue_work)
465 queue_work(im->drv_workq, &itnim_drv->itnim_work);
Jing Huang7725ccf2009-09-23 17:46:15 -0700466}
467
Jing Huang5fbe25c2010-10-18 17:17:23 -0700468/*
Jing Huang7725ccf2009-09-23 17:46:15 -0700469 * BFA FCS itnim online callback.
470 * Context: Interrupt. bfad_lock is held
471 */
472void
473bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
474{
475 struct bfad_port_s *port;
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700476 struct bfad_im_s *im = itnim_drv->im;
Jing Huang7725ccf2009-09-23 17:46:15 -0700477
478 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
479 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
480 itnim_drv->state = ITNIM_STATE_ONLINE;
481 itnim_drv->queue_work = 1;
482 itnim_drv->im_port = port->im_port;
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700483
484 /* ITNIM processing */
485 if (itnim_drv->queue_work)
486 queue_work(im->drv_workq, &itnim_drv->itnim_work);
Jing Huang7725ccf2009-09-23 17:46:15 -0700487}
488
Jing Huang5fbe25c2010-10-18 17:17:23 -0700489/*
Jing Huang7725ccf2009-09-23 17:46:15 -0700490 * BFA FCS itnim offline callback.
491 * Context: Interrupt. bfad_lock is held
492 */
493void
494bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
495{
496 struct bfad_port_s *port;
497 struct bfad_s *bfad;
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700498 struct bfad_im_s *im = itnim_drv->im;
Jing Huang7725ccf2009-09-23 17:46:15 -0700499
500 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
501 bfad = port->bfad;
502 if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
503 (port->flags & BFAD_PORT_DELETE)) {
504 itnim_drv->state = ITNIM_STATE_OFFLINE;
505 return;
506 }
507 itnim_drv->im_port = port->im_port;
508 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
509 itnim_drv->queue_work = 1;
Jing Huang7725ccf2009-09-23 17:46:15 -0700510
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700511 /* ITNIM processing */
512 if (itnim_drv->queue_work)
513 queue_work(im->drv_workq, &itnim_drv->itnim_work);
Jing Huang7725ccf2009-09-23 17:46:15 -0700514}
515
Jing Huang5fbe25c2010-10-18 17:17:23 -0700516/*
Jing Huang7725ccf2009-09-23 17:46:15 -0700517 * Allocate a Scsi_Host for a port.
518 */
519int
Jing Huangb5042932010-03-19 11:05:39 -0700520bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700521 struct device *dev)
Jing Huang7725ccf2009-09-23 17:46:15 -0700522{
523 int error = 1;
524
Jing Huang42b426e2010-03-19 11:07:09 -0700525 mutex_lock(&bfad_mutex);
Tejun Heo70a97552013-02-27 17:04:41 -0800526 error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
527 if (error < 0) {
Jing Huang42b426e2010-03-19 11:07:09 -0700528 mutex_unlock(&bfad_mutex);
Tejun Heo70a97552013-02-27 17:04:41 -0800529 printk(KERN_WARNING "idr_alloc failure\n");
Jing Huang7725ccf2009-09-23 17:46:15 -0700530 goto out;
531 }
Tejun Heo70a97552013-02-27 17:04:41 -0800532 im_port->idr_id = error;
Jing Huang42b426e2010-03-19 11:07:09 -0700533 mutex_unlock(&bfad_mutex);
534
Maggie Zhangf16a1752010-12-09 19:12:32 -0800535 im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
Jing Huang7725ccf2009-09-23 17:46:15 -0700536 if (!im_port->shost) {
537 error = 1;
538 goto out_free_idr;
539 }
540
541 im_port->shost->hostdata[0] = (unsigned long)im_port;
542 im_port->shost->unique_id = im_port->idr_id;
543 im_port->shost->this_id = -1;
544 im_port->shost->max_id = MAX_FCP_TARGET;
545 im_port->shost->max_lun = MAX_FCP_LUN;
546 im_port->shost->max_cmd_len = 16;
547 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
Jing Huangb5042932010-03-19 11:05:39 -0700548 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
549 im_port->shost->transportt = bfad_im_scsi_transport_template;
550 else
551 im_port->shost->transportt =
552 bfad_im_scsi_vport_transport_template;
Jing Huang7725ccf2009-09-23 17:46:15 -0700553
Jing Huangc54d5572010-07-08 20:01:49 -0700554 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
Jing Huang7725ccf2009-09-23 17:46:15 -0700555 if (error) {
Jing Huangb5042932010-03-19 11:05:39 -0700556 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
Jing Huang7725ccf2009-09-23 17:46:15 -0700557 goto out_fc_rel;
558 }
559
Jing Huang7725ccf2009-09-23 17:46:15 -0700560 return 0;
561
562out_fc_rel:
563 scsi_host_put(im_port->shost);
Jing Huangd9883542010-07-08 19:46:26 -0700564 im_port->shost = NULL;
Jing Huang7725ccf2009-09-23 17:46:15 -0700565out_free_idr:
Jing Huang42b426e2010-03-19 11:07:09 -0700566 mutex_lock(&bfad_mutex);
Jing Huang7725ccf2009-09-23 17:46:15 -0700567 idr_remove(&bfad_im_port_index, im_port->idr_id);
Jing Huang42b426e2010-03-19 11:07:09 -0700568 mutex_unlock(&bfad_mutex);
Jing Huang7725ccf2009-09-23 17:46:15 -0700569out:
570 return error;
571}
572
573void
574bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
575{
Jing Huang7725ccf2009-09-23 17:46:15 -0700576 bfa_trc(bfad, bfad->inst_no);
Jing Huang88166242010-12-09 17:11:53 -0800577 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
Jing Huang7725ccf2009-09-23 17:46:15 -0700578 im_port->shost->host_no);
579
580 fc_remove_host(im_port->shost);
581
582 scsi_remove_host(im_port->shost);
583 scsi_host_put(im_port->shost);
584
Jing Huang42b426e2010-03-19 11:07:09 -0700585 mutex_lock(&bfad_mutex);
Jing Huang7725ccf2009-09-23 17:46:15 -0700586 idr_remove(&bfad_im_port_index, im_port->idr_id);
Jing Huang42b426e2010-03-19 11:07:09 -0700587 mutex_unlock(&bfad_mutex);
Jing Huang7725ccf2009-09-23 17:46:15 -0700588}
589
590static void
591bfad_im_port_delete_handler(struct work_struct *work)
592{
593 struct bfad_im_port_s *im_port =
594 container_of(work, struct bfad_im_port_s, port_delete_work);
595
Jing Huangb5042932010-03-19 11:05:39 -0700596 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
597 im_port->flags |= BFAD_PORT_DELETE;
598 fc_vport_terminate(im_port->fc_vport);
599 }
Jing Huang7725ccf2009-09-23 17:46:15 -0700600}
601
602bfa_status_t
603bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
604{
605 int rc = BFA_STATUS_OK;
606 struct bfad_im_port_s *im_port;
607
608 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
609 if (im_port == NULL) {
610 rc = BFA_STATUS_ENOMEM;
611 goto ext;
612 }
613 port->im_port = im_port;
614 im_port->port = port;
615 im_port->bfad = bfad;
616
617 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
618 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
619 INIT_LIST_HEAD(&im_port->binding_list);
620
621ext:
622 return rc;
623}
624
625void
626bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
627{
628 struct bfad_im_port_s *im_port = port->im_port;
629
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700630 queue_work(bfad->im->drv_workq,
Jing Huang7725ccf2009-09-23 17:46:15 -0700631 &im_port->port_delete_work);
632}
633
634void
635bfad_im_port_clean(struct bfad_im_port_s *im_port)
636{
637 struct bfad_fcp_binding *bp, *bp_new;
638 unsigned long flags;
639 struct bfad_s *bfad = im_port->bfad;
640
641 spin_lock_irqsave(&bfad->bfad_lock, flags);
642 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
643 list_entry) {
644 list_del(&bp->list_entry);
645 kfree(bp);
646 }
647
648 /* the itnim_mapped_list must be empty at this time */
Jing Huangd4b671c2010-12-26 21:46:35 -0800649 WARN_ON(!list_empty(&im_port->itnim_mapped_list));
Jing Huang7725ccf2009-09-23 17:46:15 -0700650
651 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
652}
653
Krishna Gudipati7826f302011-07-20 16:59:13 -0700654static void bfad_aen_im_notify_handler(struct work_struct *work)
655{
656 struct bfad_im_s *im =
657 container_of(work, struct bfad_im_s, aen_im_notify_work);
658 struct bfa_aen_entry_s *aen_entry;
659 struct bfad_s *bfad = im->bfad;
660 struct Scsi_Host *shost = bfad->pport.im_port->shost;
661 void *event_data;
662 unsigned long flags;
663
664 while (!list_empty(&bfad->active_aen_q)) {
665 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
666 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
667 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
668 event_data = (char *)aen_entry + sizeof(struct list_head);
669 fc_host_post_vendor_event(shost, fc_get_event_number(),
670 sizeof(struct bfa_aen_entry_s) -
671 sizeof(struct list_head),
672 (char *)event_data, BFAD_NL_VENDOR_ID);
673 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
674 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
675 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
676 }
677}
678
Jing Huang7725ccf2009-09-23 17:46:15 -0700679bfa_status_t
680bfad_im_probe(struct bfad_s *bfad)
681{
682 struct bfad_im_s *im;
Jing Huang7725ccf2009-09-23 17:46:15 -0700683
684 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
Dan Carpentera5254db2012-06-27 11:59:58 +0300685 if (im == NULL)
686 return BFA_STATUS_ENOMEM;
Jing Huang7725ccf2009-09-23 17:46:15 -0700687
688 bfad->im = im;
689 im->bfad = bfad;
690
Maggie Zhangf16a1752010-12-09 19:12:32 -0800691 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
Jing Huang7725ccf2009-09-23 17:46:15 -0700692 kfree(im);
Dan Carpentera5254db2012-06-27 11:59:58 +0300693 return BFA_STATUS_FAILED;
Jing Huang7725ccf2009-09-23 17:46:15 -0700694 }
695
Krishna Gudipati7826f302011-07-20 16:59:13 -0700696 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
Dan Carpentera5254db2012-06-27 11:59:58 +0300697 return BFA_STATUS_OK;
Jing Huang7725ccf2009-09-23 17:46:15 -0700698}
699
700void
701bfad_im_probe_undo(struct bfad_s *bfad)
702{
703 if (bfad->im) {
Maggie Zhangf16a1752010-12-09 19:12:32 -0800704 bfad_destroy_workq(bfad->im);
Jing Huang7725ccf2009-09-23 17:46:15 -0700705 kfree(bfad->im);
706 bfad->im = NULL;
707 }
708}
709
Jing Huang7725ccf2009-09-23 17:46:15 -0700710struct Scsi_Host *
Maggie Zhangf16a1752010-12-09 19:12:32 -0800711bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
Jing Huang7725ccf2009-09-23 17:46:15 -0700712{
713 struct scsi_host_template *sht;
714
715 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
716 sht = &bfad_im_scsi_host_template;
717 else
718 sht = &bfad_im_vport_template;
719
Krishna Gudipati61e62e22011-06-24 20:29:07 -0700720 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
721 sht->max_sectors = max_xfer_size << 1;
722
Jing Huang7725ccf2009-09-23 17:46:15 -0700723 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
724
725 return scsi_host_alloc(sht, sizeof(unsigned long));
726}
727
728void
Maggie Zhangf16a1752010-12-09 19:12:32 -0800729bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
Jing Huang7725ccf2009-09-23 17:46:15 -0700730{
Jing Huangb5042932010-03-19 11:05:39 -0700731 if (!(im_port->flags & BFAD_PORT_DELETE))
732 flush_workqueue(bfad->im->drv_workq);
Jing Huang7725ccf2009-09-23 17:46:15 -0700733 bfad_im_scsi_host_free(im_port->bfad, im_port);
734 bfad_im_port_clean(im_port);
735 kfree(im_port);
736}
737
738void
Maggie Zhangf16a1752010-12-09 19:12:32 -0800739bfad_destroy_workq(struct bfad_im_s *im)
Jing Huang7725ccf2009-09-23 17:46:15 -0700740{
741 if (im && im->drv_workq) {
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700742 flush_workqueue(im->drv_workq);
Jing Huang7725ccf2009-09-23 17:46:15 -0700743 destroy_workqueue(im->drv_workq);
744 im->drv_workq = NULL;
745 }
746}
747
748bfa_status_t
Maggie Zhangf16a1752010-12-09 19:12:32 -0800749bfad_thread_workq(struct bfad_s *bfad)
Jing Huang7725ccf2009-09-23 17:46:15 -0700750{
751 struct bfad_im_s *im = bfad->im;
752
753 bfa_trc(bfad, 0);
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700754 snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
Jing Huang7725ccf2009-09-23 17:46:15 -0700755 bfad->inst_no);
756 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
757 if (!im->drv_workq)
758 return BFA_STATUS_FAILED;
759
760 return BFA_STATUS_OK;
761}
762
Jing Huang5fbe25c2010-10-18 17:17:23 -0700763/*
Jing Huang7725ccf2009-09-23 17:46:15 -0700764 * Scsi_Host template entry.
765 *
766 * Description:
767 * OS entry point to adjust the queue_depths on a per-device basis.
768 * Called once per device during the bus scan.
769 * Return non-zero if fails.
770 */
771static int
772bfad_im_slave_configure(struct scsi_device *sdev)
773{
774 if (sdev->tagged_supported)
775 scsi_activate_tcq(sdev, bfa_lun_queue_depth);
776 else
777 scsi_deactivate_tcq(sdev, bfa_lun_queue_depth);
778
779 return 0;
780}
781
782struct scsi_host_template bfad_im_scsi_host_template = {
783 .module = THIS_MODULE,
784 .name = BFAD_DRIVER_NAME,
785 .info = bfad_im_info,
786 .queuecommand = bfad_im_queuecommand,
787 .eh_abort_handler = bfad_im_abort_handler,
788 .eh_device_reset_handler = bfad_im_reset_lun_handler,
789 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
790
791 .slave_alloc = bfad_im_slave_alloc,
792 .slave_configure = bfad_im_slave_configure,
793 .slave_destroy = bfad_im_slave_destroy,
794
795 .this_id = -1,
796 .sg_tablesize = BFAD_IO_MAX_SGE,
797 .cmd_per_lun = 3,
798 .use_clustering = ENABLE_CLUSTERING,
799 .shost_attrs = bfad_im_host_attrs,
Krishna Gudipati61e62e22011-06-24 20:29:07 -0700800 .max_sectors = BFAD_MAX_SECTORS,
Krishna Gudipatib85daaf2011-06-13 15:55:11 -0700801 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
Jing Huang7725ccf2009-09-23 17:46:15 -0700802};
803
804struct scsi_host_template bfad_im_vport_template = {
805 .module = THIS_MODULE,
806 .name = BFAD_DRIVER_NAME,
807 .info = bfad_im_info,
808 .queuecommand = bfad_im_queuecommand,
809 .eh_abort_handler = bfad_im_abort_handler,
810 .eh_device_reset_handler = bfad_im_reset_lun_handler,
811 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
812
813 .slave_alloc = bfad_im_slave_alloc,
814 .slave_configure = bfad_im_slave_configure,
815 .slave_destroy = bfad_im_slave_destroy,
816
817 .this_id = -1,
818 .sg_tablesize = BFAD_IO_MAX_SGE,
819 .cmd_per_lun = 3,
820 .use_clustering = ENABLE_CLUSTERING,
821 .shost_attrs = bfad_im_vport_attrs,
Krishna Gudipati61e62e22011-06-24 20:29:07 -0700822 .max_sectors = BFAD_MAX_SECTORS,
Jing Huang7725ccf2009-09-23 17:46:15 -0700823};
824
Jing Huang7725ccf2009-09-23 17:46:15 -0700825bfa_status_t
826bfad_im_module_init(void)
827{
828 bfad_im_scsi_transport_template =
829 fc_attach_transport(&bfad_im_fc_function_template);
830 if (!bfad_im_scsi_transport_template)
831 return BFA_STATUS_ENOMEM;
832
Jing Huangb5042932010-03-19 11:05:39 -0700833 bfad_im_scsi_vport_transport_template =
834 fc_attach_transport(&bfad_im_vport_fc_function_template);
835 if (!bfad_im_scsi_vport_transport_template) {
836 fc_release_transport(bfad_im_scsi_transport_template);
837 return BFA_STATUS_ENOMEM;
838 }
839
Jing Huang7725ccf2009-09-23 17:46:15 -0700840 return BFA_STATUS_OK;
841}
842
843void
844bfad_im_module_exit(void)
845{
846 if (bfad_im_scsi_transport_template)
847 fc_release_transport(bfad_im_scsi_transport_template);
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700848
Jing Huangb5042932010-03-19 11:05:39 -0700849 if (bfad_im_scsi_vport_transport_template)
850 fc_release_transport(bfad_im_scsi_vport_transport_template);
Jing Huang7725ccf2009-09-23 17:46:15 -0700851}
852
853void
Maggie Zhangf16a1752010-12-09 19:12:32 -0800854bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
Jing Huang7725ccf2009-09-23 17:46:15 -0700855{
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
881void
Maggie Zhangf16a1752010-12-09 19:12:32 -0800882bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
Jing Huang7725ccf2009-09-23 17:46:15 -0700883{
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
Jing Huang7725ccf2009-09-23 17:46:15 -0700895struct bfad_itnim_s *
Maggie Zhangf16a1752010-12-09 19:12:32 -0800896bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
Jing Huang7725ccf2009-09-23 17:46:15 -0700897{
898 struct bfad_itnim_s *itnim = NULL;
899
900 /* Search the mapped list for this target ID */
901 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
902 if (id == itnim->scsi_tgt_id)
903 return itnim;
904 }
905
906 return NULL;
907}
908
Jing Huang5fbe25c2010-10-18 17:17:23 -0700909/*
Krishna Gudipati5b7db7a2011-12-20 18:58:32 -0800910 * Function is invoked from the SCSI Host Template slave_alloc() entry point.
911 * Has the logic to query the LUN Mask database to check if this LUN needs to
912 * be made visible to the SCSI mid-layer or not.
913 *
914 * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
915 * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
916 */
917static int
918bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
919 struct fc_rport *rport)
920{
921 struct bfad_itnim_data_s *itnim_data =
922 (struct bfad_itnim_data_s *) rport->dd_data;
923 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
924 struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
925 struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
926 int i = 0, ret = -ENXIO;
927
928 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
929 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
930 scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
931 lun_list[i].rp_tag == bfa_rport->rport_tag &&
932 lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
933 ret = BFA_STATUS_OK;
934 break;
935 }
936 }
937 return ret;
938}
939
940/*
Jing Huang7725ccf2009-09-23 17:46:15 -0700941 * Scsi_Host template entry slave_alloc
942 */
943static int
944bfad_im_slave_alloc(struct scsi_device *sdev)
945{
946 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
Jakob Normarkc6e23d82013-05-15 21:41:51 +0200947 struct bfad_itnim_data_s *itnim_data;
948 struct bfa_s *bfa;
Jing Huang7725ccf2009-09-23 17:46:15 -0700949
950 if (!rport || fc_remote_port_chkready(rport))
951 return -ENXIO;
952
Jakob Normarkc6e23d82013-05-15 21:41:51 +0200953 itnim_data = (struct bfad_itnim_data_s *) rport->dd_data;
954 bfa = itnim_data->itnim->bfa_itnim->bfa;
955
Krishna Gudipati5b7db7a2011-12-20 18:58:32 -0800956 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
957 /*
958 * We should not mask LUN 0 - since this will translate
959 * to no LUN / TARGET for SCSI ml resulting no scan.
960 */
961 if (sdev->lun == 0) {
962 sdev->sdev_bflags |= BLIST_NOREPORTLUN |
963 BLIST_SPARSELUN;
964 goto done;
965 }
966
967 /*
968 * Query LUN Mask configuration - to expose this LUN
969 * to the SCSI mid-layer or to mask it.
970 */
971 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
972 BFA_STATUS_OK)
973 return -ENXIO;
974 }
975done:
Jing Huang7725ccf2009-09-23 17:46:15 -0700976 sdev->hostdata = rport->dd_data;
977
978 return 0;
979}
980
Krishna Gudipati6192bd72012-05-11 17:49:59 -0700981u32
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700982bfad_im_supported_speeds(struct bfa_s *bfa)
983{
Jing Huange0a08a32010-10-18 17:14:01 -0700984 struct bfa_ioc_attr_s *ioc_attr;
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700985 u32 supported_speed = 0;
986
Jing Huange0a08a32010-10-18 17:14:01 -0700987 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
988 if (!ioc_attr)
989 return 0;
990
Maggie Zhangf7f738122010-12-09 19:08:43 -0800991 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
Krishna Gudipati8b070b42011-06-13 15:52:40 -0700992 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
993 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
994 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
995 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
Jing Huange0a08a32010-10-18 17:14:01 -0700996 if (ioc_attr->adapter_attr.is_mezz) {
Krishna Gudipatia36c61f2010-09-15 11:50:55 -0700997 supported_speed |= FC_PORTSPEED_8GBIT |
998 FC_PORTSPEED_4GBIT |
999 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
1000 } else {
1001 supported_speed |= FC_PORTSPEED_8GBIT |
1002 FC_PORTSPEED_4GBIT |
1003 FC_PORTSPEED_2GBIT;
1004 }
Jing Huange0a08a32010-10-18 17:14:01 -07001005 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001006 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1007 FC_PORTSPEED_1GBIT;
Jing Huange0a08a32010-10-18 17:14:01 -07001008 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001009 supported_speed |= FC_PORTSPEED_10GBIT;
1010 }
Jing Huange0a08a32010-10-18 17:14:01 -07001011 kfree(ioc_attr);
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001012 return supported_speed;
1013}
1014
Jing Huang7725ccf2009-09-23 17:46:15 -07001015void
Maggie Zhangf16a1752010-12-09 19:12:32 -08001016bfad_fc_host_init(struct bfad_im_port_s *im_port)
Jing Huang7725ccf2009-09-23 17:46:15 -07001017{
1018 struct Scsi_Host *host = im_port->shost;
1019 struct bfad_s *bfad = im_port->bfad;
1020 struct bfad_port_s *port = im_port->port;
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001021 char symname[BFA_SYMNAME_MAXLEN];
Jing Huange0a08a32010-10-18 17:14:01 -07001022 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
Jing Huang7725ccf2009-09-23 17:46:15 -07001023
1024 fc_host_node_name(host) =
Jing Huangba816ea2010-10-18 17:10:50 -07001025 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
Jing Huang7725ccf2009-09-23 17:46:15 -07001026 fc_host_port_name(host) =
Jing Huangba816ea2010-10-18 17:10:50 -07001027 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
Jing Huangb5042932010-03-19 11:05:39 -07001028 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
Jing Huang7725ccf2009-09-23 17:46:15 -07001029
1030 fc_host_supported_classes(host) = FC_COS_CLASS3;
1031
1032 memset(fc_host_supported_fc4s(host), 0,
1033 sizeof(fc_host_supported_fc4s(host)));
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001034 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
Jing Huang7725ccf2009-09-23 17:46:15 -07001035 /* For FCP type 0x08 */
1036 fc_host_supported_fc4s(host)[2] = 1;
Jing Huang7725ccf2009-09-23 17:46:15 -07001037 /* For fibre channel services type 0x20 */
1038 fc_host_supported_fc4s(host)[7] = 1;
1039
Jakob Normarkc6e23d82013-05-15 21:41:51 +02001040 strlcpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001041 BFA_SYMNAME_MAXLEN);
1042 sprintf(fc_host_symbolic_name(host), "%s", symname);
Jing Huang7725ccf2009-09-23 17:46:15 -07001043
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001044 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
Jing Huang5fbe25c2010-10-18 17:17:23 -07001045 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
Jing Huang7725ccf2009-09-23 17:46:15 -07001046}
1047
1048static void
1049bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1050{
1051 struct fc_rport_identifiers rport_ids;
1052 struct fc_rport *fc_rport;
1053 struct bfad_itnim_data_s *itnim_data;
1054
1055 rport_ids.node_name =
Jing Huangba816ea2010-10-18 17:10:50 -07001056 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
Jing Huang7725ccf2009-09-23 17:46:15 -07001057 rport_ids.port_name =
Jing Huangba816ea2010-10-18 17:10:50 -07001058 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
Jing Huang7725ccf2009-09-23 17:46:15 -07001059 rport_ids.port_id =
Maggie Zhangf16a1752010-12-09 19:12:32 -08001060 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
Jing Huang7725ccf2009-09-23 17:46:15 -07001061 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1062
1063 itnim->fc_rport = fc_rport =
1064 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1065
1066 if (!fc_rport)
1067 return;
1068
1069 fc_rport->maxframe_size =
1070 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1071 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1072
1073 itnim_data = fc_rport->dd_data;
1074 itnim_data->itnim = itnim;
1075
1076 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1077
1078 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1079 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1080
1081 if ((fc_rport->scsi_target_id != -1)
1082 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1083 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1084
Krishna Gudipati5b7db7a2011-12-20 18:58:32 -08001085 itnim->channel = fc_rport->channel;
1086
Jing Huang7725ccf2009-09-23 17:46:15 -07001087 return;
1088}
1089
Jing Huang5fbe25c2010-10-18 17:17:23 -07001090/*
Jing Huang7725ccf2009-09-23 17:46:15 -07001091 * Work queue handler using FC transport service
1092* Context: kernel
1093 */
1094static void
1095bfad_im_itnim_work_handler(struct work_struct *work)
1096{
1097 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1098 itnim_work);
1099 struct bfad_im_s *im = itnim->im;
1100 struct bfad_s *bfad = im->bfad;
1101 struct bfad_im_port_s *im_port;
1102 unsigned long flags;
1103 struct fc_rport *fc_rport;
1104 wwn_t wwpn;
1105 u32 fcid;
1106 char wwpn_str[32], fcid_str[16];
1107
1108 spin_lock_irqsave(&bfad->bfad_lock, flags);
1109 im_port = itnim->im_port;
1110 bfa_trc(bfad, itnim->state);
1111 switch (itnim->state) {
1112 case ITNIM_STATE_ONLINE:
1113 if (!itnim->fc_rport) {
1114 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1115 bfad_im_fc_rport_add(im_port, itnim);
1116 spin_lock_irqsave(&bfad->bfad_lock, flags);
1117 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1118 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1119 wwn2str(wwpn_str, wwpn);
1120 fcid2str(fcid_str, fcid);
1121 list_add_tail(&itnim->list_entry,
1122 &im_port->itnim_mapped_list);
Jing Huang88166242010-12-09 17:11:53 -08001123 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001124 "ITNIM ONLINE Target: %d:0:%d "
1125 "FCID: %s WWPN: %s\n",
Jing Huang7725ccf2009-09-23 17:46:15 -07001126 im_port->shost->host_no,
1127 itnim->scsi_tgt_id,
1128 fcid_str, wwpn_str);
1129 } else {
1130 printk(KERN_WARNING
1131 "%s: itnim %llx is already in online state\n",
Jing Huangf8ceafd2009-09-25 12:29:54 -07001132 __func__,
Jing Huang7725ccf2009-09-23 17:46:15 -07001133 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1134 }
1135
1136 break;
1137 case ITNIM_STATE_OFFLINE_PENDING:
1138 itnim->state = ITNIM_STATE_OFFLINE;
1139 if (itnim->fc_rport) {
1140 fc_rport = itnim->fc_rport;
1141 ((struct bfad_itnim_data_s *)
1142 fc_rport->dd_data)->itnim = NULL;
1143 itnim->fc_rport = NULL;
1144 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1145 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1146 fc_rport->dev_loss_tmo =
1147 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1148 fc_remote_port_delete(fc_rport);
1149 spin_lock_irqsave(&bfad->bfad_lock, flags);
1150 }
1151 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1152 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1153 wwn2str(wwpn_str, wwpn);
1154 fcid2str(fcid_str, fcid);
1155 list_del(&itnim->list_entry);
Jing Huang88166242010-12-09 17:11:53 -08001156 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001157 "ITNIM OFFLINE Target: %d:0:%d "
1158 "FCID: %s WWPN: %s\n",
Jing Huang7725ccf2009-09-23 17:46:15 -07001159 im_port->shost->host_no,
1160 itnim->scsi_tgt_id,
1161 fcid_str, wwpn_str);
1162 }
1163 break;
1164 case ITNIM_STATE_FREE:
1165 if (itnim->fc_rport) {
1166 fc_rport = itnim->fc_rport;
1167 ((struct bfad_itnim_data_s *)
1168 fc_rport->dd_data)->itnim = NULL;
1169 itnim->fc_rport = NULL;
1170 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1171 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1172 fc_rport->dev_loss_tmo =
1173 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1174 fc_remote_port_delete(fc_rport);
1175 spin_lock_irqsave(&bfad->bfad_lock, flags);
1176 }
1177 list_del(&itnim->list_entry);
1178 }
1179
1180 kfree(itnim);
1181 break;
1182 default:
Jing Huangd4b671c2010-12-26 21:46:35 -08001183 WARN_ON(1);
Jing Huang7725ccf2009-09-23 17:46:15 -07001184 break;
1185 }
1186
1187 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1188}
1189
Jing Huang5fbe25c2010-10-18 17:17:23 -07001190/*
Jing Huang7725ccf2009-09-23 17:46:15 -07001191 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1192 */
1193static int
Jeff Garzikf2812332010-11-16 02:10:29 -05001194bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
Jing Huang7725ccf2009-09-23 17:46:15 -07001195{
1196 struct bfad_im_port_s *im_port =
1197 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1198 struct bfad_s *bfad = im_port->bfad;
1199 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1200 struct bfad_itnim_s *itnim;
1201 struct bfa_ioim_s *hal_io;
1202 unsigned long flags;
1203 int rc;
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001204 int sg_cnt = 0;
Jing Huang7725ccf2009-09-23 17:46:15 -07001205 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1206
1207 rc = fc_remote_port_chkready(rport);
1208 if (rc) {
1209 cmnd->result = rc;
1210 done(cmnd);
1211 return 0;
1212 }
1213
Krishna Gudipati881c1b32012-08-22 19:52:02 -07001214 if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1215 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1216 cmnd->result = DID_NO_CONNECT << 16;
1217 else
1218 cmnd->result = DID_REQUEUE << 16;
1219 done(cmnd);
1220 return 0;
1221 }
1222
Jing Huang7725ccf2009-09-23 17:46:15 -07001223 sg_cnt = scsi_dma_map(cmnd);
Jing Huang7725ccf2009-09-23 17:46:15 -07001224 if (sg_cnt < 0)
1225 return SCSI_MLQUEUE_HOST_BUSY;
1226
1227 cmnd->scsi_done = done;
1228
1229 spin_lock_irqsave(&bfad->bfad_lock, flags);
1230 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1231 printk(KERN_WARNING
1232 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1233 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1234 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1235 goto out_fail_cmd;
1236 }
1237
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001238
Jing Huang7725ccf2009-09-23 17:46:15 -07001239 itnim = itnim_data->itnim;
1240 if (!itnim) {
1241 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1242 goto out_fail_cmd;
1243 }
1244
1245 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1246 itnim->bfa_itnim, sg_cnt);
1247 if (!hal_io) {
1248 printk(KERN_WARNING "hal_io failure\n");
1249 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1250 scsi_dma_unmap(cmnd);
1251 return SCSI_MLQUEUE_HOST_BUSY;
1252 }
1253
1254 cmnd->host_scribble = (char *)hal_io;
Jing Huang7725ccf2009-09-23 17:46:15 -07001255 bfa_ioim_start(hal_io);
1256 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1257
1258 return 0;
1259
1260out_fail_cmd:
1261 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1262 scsi_dma_unmap(cmnd);
1263 if (done)
1264 done(cmnd);
1265
1266 return 0;
1267}
1268
Jeff Garzikf2812332010-11-16 02:10:29 -05001269static DEF_SCSI_QCMD(bfad_im_queuecommand)
1270
Jing Huang7725ccf2009-09-23 17:46:15 -07001271void
Maggie Zhangf16a1752010-12-09 19:12:32 -08001272bfad_rport_online_wait(struct bfad_s *bfad)
Jing Huang7725ccf2009-09-23 17:46:15 -07001273{
1274 int i;
1275 int rport_delay = 10;
1276
1277 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001278 && i < bfa_linkup_delay; i++) {
1279 set_current_state(TASK_UNINTERRUPTIBLE);
1280 schedule_timeout(HZ);
1281 }
Jing Huang7725ccf2009-09-23 17:46:15 -07001282
1283 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1284 rport_delay = rport_delay < bfa_linkup_delay ?
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001285 rport_delay : bfa_linkup_delay;
Jing Huang7725ccf2009-09-23 17:46:15 -07001286 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001287 && i < rport_delay; i++) {
1288 set_current_state(TASK_UNINTERRUPTIBLE);
1289 schedule_timeout(HZ);
1290 }
Jing Huang7725ccf2009-09-23 17:46:15 -07001291
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001292 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1293 set_current_state(TASK_UNINTERRUPTIBLE);
1294 schedule_timeout(rport_delay * HZ);
1295 }
Jing Huang7725ccf2009-09-23 17:46:15 -07001296 }
1297}
1298
1299int
Maggie Zhangf16a1752010-12-09 19:12:32 -08001300bfad_get_linkup_delay(struct bfad_s *bfad)
Jing Huang7725ccf2009-09-23 17:46:15 -07001301{
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001302 u8 nwwns = 0;
1303 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];
1304 int linkup_delay;
Jing Huang7725ccf2009-09-23 17:46:15 -07001305
1306 /*
1307 * Querying for the boot target port wwns
1308 * -- read from boot information in flash.
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001309 * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1310 * else => local boot machine set linkup_delay = 0
Jing Huang7725ccf2009-09-23 17:46:15 -07001311 */
1312
Jing Huang15b64a82010-07-08 19:48:12 -07001313 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
Jing Huang7725ccf2009-09-23 17:46:15 -07001314
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001315 if (nwwns > 0)
1316 /* If Boot over SAN set linkup_delay = 30sec */
1317 linkup_delay = 30;
1318 else
1319 /* If local boot; no linkup_delay */
1320 linkup_delay = 0;
Jing Huang7725ccf2009-09-23 17:46:15 -07001321
Krishna Gudipatia36c61f2010-09-15 11:50:55 -07001322 return linkup_delay;
Jing Huang7725ccf2009-09-23 17:46:15 -07001323}