1/*
2 * linux/drivers/message/fusion/mptfc.c
3 * For use with LSI PCI chip/adapter(s)
4 * running LSI Fusion MPT (Message Passing Technology) firmware.
5 *
6 * Copyright (c) 1999-2008 LSI Corporation
7 * (mailto:DL-MPTFusionLinux@lsi.com)
8 *
9 */
10/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
11/*
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; version 2 of the License.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 NO WARRANTY
22 THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
23 CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
24 LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
25 MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
26 solely responsible for determining the appropriateness of using and
27 distributing the Program and assumes all risks associated with its
28 exercise of rights under this Agreement, including but not limited to
29 the risks and costs of program errors, damage to or loss of data,
30 programs or equipment, and unavailability or interruption of operations.
31
32 DISCLAIMER OF LIABILITY
33 NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
34 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
35 DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
36 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
37 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
38 USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
39 HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
40
41 You should have received a copy of the GNU General Public License
42 along with this program; if not, write to the Free Software
43 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
44*/
45/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
46#include <linux/module.h>
47#include <linux/kernel.h>
48#include <linux/init.h>
49#include <linux/errno.h>
50#include <linux/kdev_t.h>
51#include <linux/blkdev.h>
52#include <linux/delay.h> /* for mdelay */
53#include <linux/interrupt.h>
54#include <linux/reboot.h> /* notifier code */
55#include <linux/workqueue.h>
56#include <linux/sort.h>
57#include <linux/slab.h>
58
59#include <scsi/scsi.h>
60#include <scsi/scsi_cmnd.h>
61#include <scsi/scsi_device.h>
62#include <scsi/scsi_host.h>
63#include <scsi/scsi_tcq.h>
64#include <scsi/scsi_transport_fc.h>
65
66#include "mptbase.h"
67#include "mptscsih.h"
68
69/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
70#define my_NAME "Fusion MPT FC Host driver"
71#define my_VERSION MPT_LINUX_VERSION_COMMON
72#define MYNAM "mptfc"
73
74MODULE_AUTHOR(MODULEAUTHOR);
75MODULE_DESCRIPTION(my_NAME);
76MODULE_LICENSE("GPL");
77MODULE_VERSION(my_VERSION);
78
79/* Command line args */
80#define MPTFC_DEV_LOSS_TMO (60)
81static int mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO; /* reasonable default */
82module_param(mptfc_dev_loss_tmo, int, 0);
83MODULE_PARM_DESC(mptfc_dev_loss_tmo, " Initial time the driver programs the "
84 " transport to wait for an rport to "
85 " return following a device loss event."
86 " Default=60.");
87
88/* scsi-mid layer global parmeter is max_report_luns, which is 511 */
89#define MPTFC_MAX_LUN (16895)
90static int max_lun = MPTFC_MAX_LUN;
91module_param(max_lun, int, 0);
92MODULE_PARM_DESC(max_lun, " max lun, default=16895 ");
93
94static u8 mptfcDoneCtx = MPT_MAX_PROTOCOL_DRIVERS;
95static u8 mptfcTaskCtx = MPT_MAX_PROTOCOL_DRIVERS;
96static u8 mptfcInternalCtx = MPT_MAX_PROTOCOL_DRIVERS;
97
98static int mptfc_target_alloc(struct scsi_target *starget);
99static int mptfc_slave_alloc(struct scsi_device *sdev);
100static int mptfc_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *SCpnt);
101static void mptfc_target_destroy(struct scsi_target *starget);
102static void mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout);
103static void mptfc_remove(struct pci_dev *pdev);
104static int mptfc_abort(struct scsi_cmnd *SCpnt);
105static int mptfc_dev_reset(struct scsi_cmnd *SCpnt);
106static int mptfc_bus_reset(struct scsi_cmnd *SCpnt);
107
108static const struct scsi_host_template mptfc_driver_template = {
109 .module = THIS_MODULE,
110 .proc_name = "mptfc",
111 .show_info = mptscsih_show_info,
112 .name = "MPT FC Host",
113 .info = mptscsih_info,
114 .queuecommand = mptfc_qcmd,
115 .target_alloc = mptfc_target_alloc,
116 .slave_alloc = mptfc_slave_alloc,
117 .slave_configure = mptscsih_slave_configure,
118 .target_destroy = mptfc_target_destroy,
119 .slave_destroy = mptscsih_slave_destroy,
120 .change_queue_depth = mptscsih_change_queue_depth,
121 .eh_timed_out = fc_eh_timed_out,
122 .eh_abort_handler = mptfc_abort,
123 .eh_device_reset_handler = mptfc_dev_reset,
124 .eh_bus_reset_handler = mptfc_bus_reset,
125 .eh_host_reset_handler = mptscsih_host_reset,
126 .bios_param = mptscsih_bios_param,
127 .can_queue = MPT_FC_CAN_QUEUE,
128 .this_id = -1,
129 .sg_tablesize = MPT_SCSI_SG_DEPTH,
130 .max_sectors = 8192,
131 .cmd_per_lun = 7,
132 .shost_groups = mptscsih_host_attr_groups,
133};
134
135/****************************************************************************
136 * Supported hardware
137 */
138
139static struct pci_device_id mptfc_pci_table[] = {
140 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC909,
141 PCI_ANY_ID, PCI_ANY_ID },
142 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC919,
143 PCI_ANY_ID, PCI_ANY_ID },
144 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC929,
145 PCI_ANY_ID, PCI_ANY_ID },
146 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC919X,
147 PCI_ANY_ID, PCI_ANY_ID },
148 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC929X,
149 PCI_ANY_ID, PCI_ANY_ID },
150 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC939X,
151 PCI_ANY_ID, PCI_ANY_ID },
152 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC949X,
153 PCI_ANY_ID, PCI_ANY_ID },
154 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC949E,
155 PCI_ANY_ID, PCI_ANY_ID },
156 { PCI_VENDOR_ID_BROCADE, MPI_MANUFACTPAGE_DEVICEID_FC949E,
157 PCI_ANY_ID, PCI_ANY_ID },
158 {0} /* Terminating entry */
159};
160MODULE_DEVICE_TABLE(pci, mptfc_pci_table);
161
162static struct scsi_transport_template *mptfc_transport_template = NULL;
163
164static struct fc_function_template mptfc_transport_functions = {
165 .dd_fcrport_size = 8,
166 .show_host_node_name = 1,
167 .show_host_port_name = 1,
168 .show_host_supported_classes = 1,
169 .show_host_port_id = 1,
170 .show_rport_supported_classes = 1,
171 .show_starget_node_name = 1,
172 .show_starget_port_name = 1,
173 .show_starget_port_id = 1,
174 .set_rport_dev_loss_tmo = mptfc_set_rport_loss_tmo,
175 .show_rport_dev_loss_tmo = 1,
176 .show_host_supported_speeds = 1,
177 .show_host_maxframe_size = 1,
178 .show_host_speed = 1,
179 .show_host_fabric_name = 1,
180 .show_host_port_type = 1,
181 .show_host_port_state = 1,
182 .show_host_symbolic_name = 1,
183};
184
185static int
186mptfc_block_error_handler(struct fc_rport *rport)
187{
188 MPT_SCSI_HOST *hd;
189 struct Scsi_Host *shost = rport_to_shost(rport);
190 unsigned long flags;
191 int ready;
192 MPT_ADAPTER *ioc;
193 int loops = 40; /* seconds */
194
195 hd = shost_priv(shost);
196 ioc = hd->ioc;
197 spin_lock_irqsave(shost->host_lock, flags);
198 while ((ready = fc_remote_port_chkready(rport) >> 16) == DID_IMM_RETRY
199 || (loops > 0 && ioc->active == 0)) {
200 spin_unlock_irqrestore(lock: shost->host_lock, flags);
201 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
202 "mptfc_block_error_handler.%d: %s, port status is "
203 "%x, active flag %d, deferring recovery.\n",
204 ioc->name, ioc->sh->host_no,
205 dev_name(&rport->dev), ready, ioc->active));
206 msleep(msecs: 1000);
207 spin_lock_irqsave(shost->host_lock, flags);
208 loops --;
209 }
210 spin_unlock_irqrestore(lock: shost->host_lock, flags);
211
212 if (ready == DID_NO_CONNECT || ioc->active == 0) {
213 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
214 "mpt_block_error_handler.%d: %s, failing recovery, "
215 "port state %x, active %d.\n",
216 ioc->name, ioc->sh->host_no,
217 dev_name(&rport->dev), ready, ioc->active));
218 return FAILED;
219 }
220 return SUCCESS;
221}
222
223static int
224mptfc_abort(struct scsi_cmnd *SCpnt)
225{
226 struct Scsi_Host *shost = SCpnt->device->host;
227 struct fc_rport *rport = starget_to_rport(scsi_target(SCpnt->device));
228 MPT_SCSI_HOST __maybe_unused *hd = shost_priv(shost);
229 int rtn;
230
231 rtn = mptfc_block_error_handler(rport);
232 if (rtn == SUCCESS) {
233 dfcprintk (hd->ioc, printk(MYIOC_s_DEBUG_FMT
234 "%s.%d: %d:%llu, executing recovery.\n", __func__,
235 hd->ioc->name, shost->host_no,
236 SCpnt->device->id, SCpnt->device->lun));
237 rtn = mptscsih_abort(SCpnt);
238 }
239 return rtn;
240}
241
242static int
243mptfc_dev_reset(struct scsi_cmnd *SCpnt)
244{
245 struct Scsi_Host *shost = SCpnt->device->host;
246 struct fc_rport *rport = starget_to_rport(scsi_target(SCpnt->device));
247 MPT_SCSI_HOST __maybe_unused *hd = shost_priv(shost);
248 int rtn;
249
250 rtn = mptfc_block_error_handler(rport);
251 if (rtn == SUCCESS) {
252 dfcprintk (hd->ioc, printk(MYIOC_s_DEBUG_FMT
253 "%s.%d: %d:%llu, executing recovery.\n", __func__,
254 hd->ioc->name, shost->host_no,
255 SCpnt->device->id, SCpnt->device->lun));
256 rtn = mptscsih_dev_reset(SCpnt);
257 }
258 return rtn;
259}
260
261static int
262mptfc_bus_reset(struct scsi_cmnd *SCpnt)
263{
264 struct Scsi_Host *shost = SCpnt->device->host;
265 MPT_SCSI_HOST __maybe_unused *hd = shost_priv(shost);
266 int channel = SCpnt->device->channel;
267 struct mptfc_rport_info *ri;
268 int rtn = FAILED;
269
270 list_for_each_entry(ri, &hd->ioc->fc_rports, list) {
271 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
272 VirtTarget *vtarget = ri->starget->hostdata;
273
274 if (!vtarget || vtarget->channel != channel)
275 continue;
276 rtn = fc_block_rport(rport: ri->rport);
277 if (rtn != 0)
278 break;
279 }
280 }
281 if (rtn == 0) {
282 dfcprintk (hd->ioc, printk(MYIOC_s_DEBUG_FMT
283 "%s.%d: %d:%llu, executing recovery.\n", __func__,
284 hd->ioc->name, shost->host_no,
285 SCpnt->device->id, SCpnt->device->lun));
286 rtn = mptscsih_bus_reset(SCpnt);
287 }
288 return rtn;
289}
290
291static void
292mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
293{
294 if (timeout > 0)
295 rport->dev_loss_tmo = timeout;
296 else
297 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
298}
299
300static int
301mptfc_FcDevPage0_cmp_func(const void *a, const void *b)
302{
303 FCDevicePage0_t **aa = (FCDevicePage0_t **)a;
304 FCDevicePage0_t **bb = (FCDevicePage0_t **)b;
305
306 if ((*aa)->CurrentBus == (*bb)->CurrentBus) {
307 if ((*aa)->CurrentTargetID == (*bb)->CurrentTargetID)
308 return 0;
309 if ((*aa)->CurrentTargetID < (*bb)->CurrentTargetID)
310 return -1;
311 return 1;
312 }
313 if ((*aa)->CurrentBus < (*bb)->CurrentBus)
314 return -1;
315 return 1;
316}
317
318static int
319mptfc_GetFcDevPage0(MPT_ADAPTER *ioc, int ioc_port,
320 void(*func)(MPT_ADAPTER *ioc,int channel, FCDevicePage0_t *arg))
321{
322 ConfigPageHeader_t hdr;
323 CONFIGPARMS cfg;
324 FCDevicePage0_t *ppage0_alloc, *fc;
325 dma_addr_t page0_dma;
326 int data_sz;
327 int ii;
328
329 FCDevicePage0_t *p0_array=NULL, *p_p0;
330 FCDevicePage0_t **pp0_array=NULL, **p_pp0;
331
332 int rc = -ENOMEM;
333 U32 port_id = 0xffffff;
334 int num_targ = 0;
335 int max_bus = ioc->facts.MaxBuses;
336 int max_targ;
337
338 max_targ = (ioc->facts.MaxDevices == 0) ? 256 : ioc->facts.MaxDevices;
339
340 data_sz = sizeof(FCDevicePage0_t) * max_bus * max_targ;
341 p_p0 = p0_array = kzalloc(size: data_sz, GFP_KERNEL);
342 if (!p0_array)
343 goto out;
344
345 data_sz = sizeof(FCDevicePage0_t *) * max_bus * max_targ;
346 p_pp0 = pp0_array = kzalloc(size: data_sz, GFP_KERNEL);
347 if (!pp0_array)
348 goto out;
349
350 do {
351 /* Get FC Device Page 0 header */
352 hdr.PageVersion = 0;
353 hdr.PageLength = 0;
354 hdr.PageNumber = 0;
355 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_DEVICE;
356 cfg.cfghdr.hdr = &hdr;
357 cfg.physAddr = -1;
358 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
359 cfg.dir = 0;
360 cfg.pageAddr = port_id;
361 cfg.timeout = 0;
362
363 if ((rc = mpt_config(ioc, cfg: &cfg)) != 0)
364 break;
365
366 if (hdr.PageLength <= 0)
367 break;
368
369 data_sz = hdr.PageLength * 4;
370 ppage0_alloc = dma_alloc_coherent(dev: &ioc->pcidev->dev, size: data_sz,
371 dma_handle: &page0_dma, GFP_KERNEL);
372 rc = -ENOMEM;
373 if (!ppage0_alloc)
374 break;
375
376 cfg.physAddr = page0_dma;
377 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
378
379 if ((rc = mpt_config(ioc, cfg: &cfg)) == 0) {
380 ppage0_alloc->PortIdentifier =
381 le32_to_cpu(ppage0_alloc->PortIdentifier);
382
383 ppage0_alloc->WWNN.Low =
384 le32_to_cpu(ppage0_alloc->WWNN.Low);
385
386 ppage0_alloc->WWNN.High =
387 le32_to_cpu(ppage0_alloc->WWNN.High);
388
389 ppage0_alloc->WWPN.Low =
390 le32_to_cpu(ppage0_alloc->WWPN.Low);
391
392 ppage0_alloc->WWPN.High =
393 le32_to_cpu(ppage0_alloc->WWPN.High);
394
395 ppage0_alloc->BBCredit =
396 le16_to_cpu(ppage0_alloc->BBCredit);
397
398 ppage0_alloc->MaxRxFrameSize =
399 le16_to_cpu(ppage0_alloc->MaxRxFrameSize);
400
401 port_id = ppage0_alloc->PortIdentifier;
402 num_targ++;
403 *p_p0 = *ppage0_alloc; /* save data */
404 *p_pp0++ = p_p0++; /* save addr */
405 }
406 dma_free_coherent(dev: &ioc->pcidev->dev, size: data_sz,
407 cpu_addr: ppage0_alloc, dma_handle: page0_dma);
408 if (rc != 0)
409 break;
410
411 } while (port_id <= 0xff0000);
412
413 if (num_targ) {
414 /* sort array */
415 if (num_targ > 1)
416 sort (base: pp0_array, num: num_targ, size: sizeof(FCDevicePage0_t *),
417 cmp_func: mptfc_FcDevPage0_cmp_func, NULL);
418 /* call caller's func for each targ */
419 for (ii = 0; ii < num_targ; ii++) {
420 fc = *(pp0_array+ii);
421 func(ioc, ioc_port, fc);
422 }
423 }
424
425 out:
426 kfree(objp: pp0_array);
427 kfree(objp: p0_array);
428 return rc;
429}
430
431static int
432mptfc_generate_rport_ids(FCDevicePage0_t *pg0, struct fc_rport_identifiers *rid)
433{
434 /* not currently usable */
435 if (pg0->Flags & (MPI_FC_DEVICE_PAGE0_FLAGS_PLOGI_INVALID |
436 MPI_FC_DEVICE_PAGE0_FLAGS_PRLI_INVALID))
437 return -1;
438
439 if (!(pg0->Flags & MPI_FC_DEVICE_PAGE0_FLAGS_TARGETID_BUS_VALID))
440 return -1;
441
442 if (!(pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_TARGET))
443 return -1;
444
445 /*
446 * board data structure already normalized to platform endianness
447 * shifted to avoid unaligned access on 64 bit architecture
448 */
449 rid->node_name = ((u64)pg0->WWNN.High) << 32 | (u64)pg0->WWNN.Low;
450 rid->port_name = ((u64)pg0->WWPN.High) << 32 | (u64)pg0->WWPN.Low;
451 rid->port_id = pg0->PortIdentifier;
452 rid->roles = FC_RPORT_ROLE_UNKNOWN;
453
454 return 0;
455}
456
457static void
458mptfc_register_dev(MPT_ADAPTER *ioc, int channel, FCDevicePage0_t *pg0)
459{
460 struct fc_rport_identifiers rport_ids;
461 struct fc_rport *rport;
462 struct mptfc_rport_info *ri;
463 int new_ri = 1;
464 u64 pn, nn;
465 VirtTarget *vtarget;
466 u32 roles = FC_RPORT_ROLE_UNKNOWN;
467
468 if (mptfc_generate_rport_ids(pg0, rid: &rport_ids) < 0)
469 return;
470
471 roles |= FC_RPORT_ROLE_FCP_TARGET;
472 if (pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_INITIATOR)
473 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
474
475 /* scan list looking for a match */
476 list_for_each_entry(ri, &ioc->fc_rports, list) {
477 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
478 if (pn == rport_ids.port_name) { /* match */
479 list_move_tail(list: &ri->list, head: &ioc->fc_rports);
480 new_ri = 0;
481 break;
482 }
483 }
484 if (new_ri) { /* allocate one */
485 ri = kzalloc(size: sizeof(struct mptfc_rport_info), GFP_KERNEL);
486 if (!ri)
487 return;
488 list_add_tail(new: &ri->list, head: &ioc->fc_rports);
489 }
490
491 ri->pg0 = *pg0; /* add/update pg0 data */
492 ri->flags &= ~MPT_RPORT_INFO_FLAGS_MISSING;
493
494 /* MPT_RPORT_INFO_FLAGS_REGISTERED - rport not previously deleted */
495 if (!(ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED)) {
496 ri->flags |= MPT_RPORT_INFO_FLAGS_REGISTERED;
497 rport = fc_remote_port_add(shost: ioc->sh, channel, ids: &rport_ids);
498 if (rport) {
499 ri->rport = rport;
500 if (new_ri) /* may have been reset by user */
501 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
502 /*
503 * if already mapped, remap here. If not mapped,
504 * target_alloc will allocate vtarget and map,
505 * slave_alloc will fill in vdevice from vtarget.
506 */
507 if (ri->starget) {
508 vtarget = ri->starget->hostdata;
509 if (vtarget) {
510 vtarget->id = pg0->CurrentTargetID;
511 vtarget->channel = pg0->CurrentBus;
512 vtarget->deleted = 0;
513 }
514 }
515 *((struct mptfc_rport_info **)rport->dd_data) = ri;
516 /* scan will be scheduled once rport becomes a target */
517 fc_remote_port_rolechg(rport,roles);
518
519 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
520 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
521 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
522 "mptfc_reg_dev.%d: %x, %llx / %llx, tid %d, "
523 "rport tid %d, tmo %d\n",
524 ioc->name,
525 ioc->sh->host_no,
526 pg0->PortIdentifier,
527 (unsigned long long)nn,
528 (unsigned long long)pn,
529 pg0->CurrentTargetID,
530 ri->rport->scsi_target_id,
531 ri->rport->dev_loss_tmo));
532 } else {
533 list_del(entry: &ri->list);
534 kfree(objp: ri);
535 ri = NULL;
536 }
537 }
538}
539
540/*
541 * OS entry point to allow for host driver to free allocated memory
542 * Called if no device present or device being unloaded
543 */
544static void
545mptfc_target_destroy(struct scsi_target *starget)
546{
547 struct fc_rport *rport;
548 struct mptfc_rport_info *ri;
549
550 rport = starget_to_rport(starget);
551 if (rport) {
552 ri = *((struct mptfc_rport_info **)rport->dd_data);
553 if (ri) /* better be! */
554 ri->starget = NULL;
555 }
556 kfree(objp: starget->hostdata);
557 starget->hostdata = NULL;
558}
559
560/*
561 * OS entry point to allow host driver to alloc memory
562 * for each scsi target. Called once per device the bus scan.
563 * Return non-zero if allocation fails.
564 */
565static int
566mptfc_target_alloc(struct scsi_target *starget)
567{
568 VirtTarget *vtarget;
569 struct fc_rport *rport;
570 struct mptfc_rport_info *ri;
571 int rc;
572
573 vtarget = kzalloc(size: sizeof(VirtTarget), GFP_KERNEL);
574 if (!vtarget)
575 return -ENOMEM;
576 starget->hostdata = vtarget;
577
578 rc = -ENODEV;
579 rport = starget_to_rport(starget);
580 if (rport) {
581 ri = *((struct mptfc_rport_info **)rport->dd_data);
582 if (ri) { /* better be! */
583 vtarget->id = ri->pg0.CurrentTargetID;
584 vtarget->channel = ri->pg0.CurrentBus;
585 ri->starget = starget;
586 rc = 0;
587 }
588 }
589 if (rc != 0) {
590 kfree(objp: vtarget);
591 starget->hostdata = NULL;
592 }
593
594 return rc;
595}
596/*
597 * mptfc_dump_lun_info
598 * @ioc
599 * @rport
600 * @sdev
601 *
602 */
603static void
604mptfc_dump_lun_info(MPT_ADAPTER *ioc, struct fc_rport *rport, struct scsi_device *sdev,
605 VirtTarget *vtarget)
606{
607 u64 nn, pn;
608 struct mptfc_rport_info *ri;
609
610 ri = *((struct mptfc_rport_info **)rport->dd_data);
611 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
612 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
613 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
614 "mptfc_slv_alloc.%d: num_luns %d, sdev.id %d, "
615 "CurrentTargetID %d, %x %llx %llx\n",
616 ioc->name,
617 sdev->host->host_no,
618 vtarget->num_luns,
619 sdev->id, ri->pg0.CurrentTargetID,
620 ri->pg0.PortIdentifier,
621 (unsigned long long)pn,
622 (unsigned long long)nn));
623}
624
625
626/*
627 * OS entry point to allow host driver to alloc memory
628 * for each scsi device. Called once per device the bus scan.
629 * Return non-zero if allocation fails.
630 * Init memory once per LUN.
631 */
632static int
633mptfc_slave_alloc(struct scsi_device *sdev)
634{
635 MPT_SCSI_HOST *hd;
636 VirtTarget *vtarget;
637 VirtDevice *vdevice;
638 struct scsi_target *starget;
639 struct fc_rport *rport;
640 MPT_ADAPTER *ioc;
641
642 starget = scsi_target(sdev);
643 rport = starget_to_rport(starget);
644
645 if (!rport || fc_remote_port_chkready(rport))
646 return -ENXIO;
647
648 hd = shost_priv(shost: sdev->host);
649 ioc = hd->ioc;
650
651 vdevice = kzalloc(size: sizeof(VirtDevice), GFP_KERNEL);
652 if (!vdevice) {
653 printk(MYIOC_s_ERR_FMT "slave_alloc kmalloc(%zd) FAILED!\n",
654 ioc->name, sizeof(VirtDevice));
655 return -ENOMEM;
656 }
657
658
659 sdev->hostdata = vdevice;
660 vtarget = starget->hostdata;
661
662 if (vtarget->num_luns == 0) {
663 vtarget->ioc_id = ioc->id;
664 vtarget->tflags = MPT_TARGET_FLAGS_Q_YES;
665 }
666
667 vdevice->vtarget = vtarget;
668 vdevice->lun = sdev->lun;
669
670 vtarget->num_luns++;
671
672
673 mptfc_dump_lun_info(ioc, rport, sdev, vtarget);
674
675 return 0;
676}
677
678static int
679mptfc_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *SCpnt)
680{
681 struct mptfc_rport_info *ri;
682 struct fc_rport *rport = starget_to_rport(scsi_target(SCpnt->device));
683 int err;
684 VirtDevice *vdevice = SCpnt->device->hostdata;
685
686 if (!vdevice || !vdevice->vtarget) {
687 SCpnt->result = DID_NO_CONNECT << 16;
688 scsi_done(cmd: SCpnt);
689 return 0;
690 }
691
692 err = fc_remote_port_chkready(rport);
693 if (unlikely(err)) {
694 SCpnt->result = err;
695 scsi_done(cmd: SCpnt);
696 return 0;
697 }
698
699 /* dd_data is null until finished adding target */
700 ri = *((struct mptfc_rport_info **)rport->dd_data);
701 if (unlikely(!ri)) {
702 SCpnt->result = DID_IMM_RETRY << 16;
703 scsi_done(cmd: SCpnt);
704 return 0;
705 }
706
707 return mptscsih_qcmd(SCpnt);
708}
709
710/*
711 * mptfc_display_port_link_speed - displaying link speed
712 * @ioc: Pointer to MPT_ADAPTER structure
713 * @portnum: IOC Port number
714 * @pp0dest: port page0 data payload
715 *
716 */
717static void
718mptfc_display_port_link_speed(MPT_ADAPTER *ioc, int portnum, FCPortPage0_t *pp0dest)
719{
720 u8 old_speed, new_speed, state;
721 char *old, *new;
722
723 if (portnum >= 2)
724 return;
725
726 old_speed = ioc->fc_link_speed[portnum];
727 new_speed = pp0dest->CurrentSpeed;
728 state = pp0dest->PortState;
729
730 if (state != MPI_FCPORTPAGE0_PORTSTATE_OFFLINE &&
731 new_speed != MPI_FCPORTPAGE0_CURRENT_SPEED_UNKNOWN) {
732
733 old = old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT ? "1 Gbps" :
734 old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT ? "2 Gbps" :
735 old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT ? "4 Gbps" :
736 "Unknown";
737 new = new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT ? "1 Gbps" :
738 new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT ? "2 Gbps" :
739 new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT ? "4 Gbps" :
740 "Unknown";
741 if (old_speed == 0)
742 printk(MYIOC_s_NOTE_FMT
743 "FC Link Established, Speed = %s\n",
744 ioc->name, new);
745 else if (old_speed != new_speed)
746 printk(MYIOC_s_WARN_FMT
747 "FC Link Speed Change, Old Speed = %s, New Speed = %s\n",
748 ioc->name, old, new);
749
750 ioc->fc_link_speed[portnum] = new_speed;
751 }
752}
753
754/*
755 * mptfc_GetFcPortPage0 - Fetch FCPort config Page0.
756 * @ioc: Pointer to MPT_ADAPTER structure
757 * @portnum: IOC Port number
758 *
759 * Return: 0 for success
760 * -ENOMEM if no memory available
761 * -EPERM if not allowed due to ISR context
762 * -EAGAIN if no msg frames currently available
763 * -EFAULT for non-successful reply or no reply (timeout)
764 * -EINVAL portnum arg out of range (hardwired to two elements)
765 */
766static int
767mptfc_GetFcPortPage0(MPT_ADAPTER *ioc, int portnum)
768{
769 ConfigPageHeader_t hdr;
770 CONFIGPARMS cfg;
771 FCPortPage0_t *ppage0_alloc;
772 FCPortPage0_t *pp0dest;
773 dma_addr_t page0_dma;
774 int data_sz;
775 int copy_sz;
776 int rc;
777 int count = 400;
778
779 if (portnum > 1)
780 return -EINVAL;
781
782 /* Get FCPort Page 0 header */
783 hdr.PageVersion = 0;
784 hdr.PageLength = 0;
785 hdr.PageNumber = 0;
786 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
787 cfg.cfghdr.hdr = &hdr;
788 cfg.physAddr = -1;
789 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
790 cfg.dir = 0;
791 cfg.pageAddr = portnum;
792 cfg.timeout = 0;
793
794 if ((rc = mpt_config(ioc, cfg: &cfg)) != 0)
795 return rc;
796
797 if (hdr.PageLength == 0)
798 return 0;
799
800 data_sz = hdr.PageLength * 4;
801 rc = -ENOMEM;
802 ppage0_alloc = dma_alloc_coherent(dev: &ioc->pcidev->dev, size: data_sz,
803 dma_handle: &page0_dma, GFP_KERNEL);
804 if (ppage0_alloc) {
805
806 try_again:
807 memset((u8 *)ppage0_alloc, 0, data_sz);
808 cfg.physAddr = page0_dma;
809 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
810
811 if ((rc = mpt_config(ioc, cfg: &cfg)) == 0) {
812 /* save the data */
813 pp0dest = &ioc->fc_port_page0[portnum];
814 copy_sz = min_t(int, sizeof(FCPortPage0_t), data_sz);
815 memcpy(pp0dest, ppage0_alloc, copy_sz);
816
817 /*
818 * Normalize endianness of structure data,
819 * by byte-swapping all > 1 byte fields!
820 */
821 pp0dest->Flags = le32_to_cpu(pp0dest->Flags);
822 pp0dest->PortIdentifier = le32_to_cpu(pp0dest->PortIdentifier);
823 pp0dest->WWNN.Low = le32_to_cpu(pp0dest->WWNN.Low);
824 pp0dest->WWNN.High = le32_to_cpu(pp0dest->WWNN.High);
825 pp0dest->WWPN.Low = le32_to_cpu(pp0dest->WWPN.Low);
826 pp0dest->WWPN.High = le32_to_cpu(pp0dest->WWPN.High);
827 pp0dest->SupportedServiceClass = le32_to_cpu(pp0dest->SupportedServiceClass);
828 pp0dest->SupportedSpeeds = le32_to_cpu(pp0dest->SupportedSpeeds);
829 pp0dest->CurrentSpeed = le32_to_cpu(pp0dest->CurrentSpeed);
830 pp0dest->MaxFrameSize = le32_to_cpu(pp0dest->MaxFrameSize);
831 pp0dest->FabricWWNN.Low = le32_to_cpu(pp0dest->FabricWWNN.Low);
832 pp0dest->FabricWWNN.High = le32_to_cpu(pp0dest->FabricWWNN.High);
833 pp0dest->FabricWWPN.Low = le32_to_cpu(pp0dest->FabricWWPN.Low);
834 pp0dest->FabricWWPN.High = le32_to_cpu(pp0dest->FabricWWPN.High);
835 pp0dest->DiscoveredPortsCount = le32_to_cpu(pp0dest->DiscoveredPortsCount);
836 pp0dest->MaxInitiators = le32_to_cpu(pp0dest->MaxInitiators);
837
838 /*
839 * if still doing discovery,
840 * hang loose a while until finished
841 */
842 if ((pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_UNKNOWN) ||
843 (pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE &&
844 (pp0dest->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_TYPE_MASK)
845 == MPI_FCPORTPAGE0_FLAGS_ATTACH_NO_INIT)) {
846 if (count-- > 0) {
847 msleep(msecs: 100);
848 goto try_again;
849 }
850 printk(MYIOC_s_INFO_FMT "Firmware discovery not"
851 " complete.\n",
852 ioc->name);
853 }
854 mptfc_display_port_link_speed(ioc, portnum, pp0dest);
855 }
856
857 dma_free_coherent(dev: &ioc->pcidev->dev, size: data_sz, cpu_addr: ppage0_alloc,
858 dma_handle: page0_dma);
859 }
860
861 return rc;
862}
863
864static int
865mptfc_WriteFcPortPage1(MPT_ADAPTER *ioc, int portnum)
866{
867 ConfigPageHeader_t hdr;
868 CONFIGPARMS cfg;
869 int rc;
870
871 if (portnum > 1)
872 return -EINVAL;
873
874 if (!(ioc->fc_data.fc_port_page1[portnum].data))
875 return -EINVAL;
876
877 /* get fcport page 1 header */
878 hdr.PageVersion = 0;
879 hdr.PageLength = 0;
880 hdr.PageNumber = 1;
881 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
882 cfg.cfghdr.hdr = &hdr;
883 cfg.physAddr = -1;
884 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
885 cfg.dir = 0;
886 cfg.pageAddr = portnum;
887 cfg.timeout = 0;
888
889 if ((rc = mpt_config(ioc, cfg: &cfg)) != 0)
890 return rc;
891
892 if (hdr.PageLength == 0)
893 return -ENODEV;
894
895 if (hdr.PageLength*4 != ioc->fc_data.fc_port_page1[portnum].pg_sz)
896 return -EINVAL;
897
898 cfg.physAddr = ioc->fc_data.fc_port_page1[portnum].dma;
899 cfg.action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
900 cfg.dir = 1;
901
902 rc = mpt_config(ioc, cfg: &cfg);
903
904 return rc;
905}
906
907static int
908mptfc_GetFcPortPage1(MPT_ADAPTER *ioc, int portnum)
909{
910 ConfigPageHeader_t hdr;
911 CONFIGPARMS cfg;
912 FCPortPage1_t *page1_alloc;
913 dma_addr_t page1_dma;
914 int data_sz;
915 int rc;
916
917 if (portnum > 1)
918 return -EINVAL;
919
920 /* get fcport page 1 header */
921 hdr.PageVersion = 0;
922 hdr.PageLength = 0;
923 hdr.PageNumber = 1;
924 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
925 cfg.cfghdr.hdr = &hdr;
926 cfg.physAddr = -1;
927 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
928 cfg.dir = 0;
929 cfg.pageAddr = portnum;
930 cfg.timeout = 0;
931
932 if ((rc = mpt_config(ioc, cfg: &cfg)) != 0)
933 return rc;
934
935 if (hdr.PageLength == 0)
936 return -ENODEV;
937
938start_over:
939
940 if (ioc->fc_data.fc_port_page1[portnum].data == NULL) {
941 data_sz = hdr.PageLength * 4;
942 if (data_sz < sizeof(FCPortPage1_t))
943 data_sz = sizeof(FCPortPage1_t);
944
945 page1_alloc = dma_alloc_coherent(dev: &ioc->pcidev->dev, size: data_sz,
946 dma_handle: &page1_dma, GFP_KERNEL);
947 if (!page1_alloc)
948 return -ENOMEM;
949 }
950 else {
951 page1_alloc = ioc->fc_data.fc_port_page1[portnum].data;
952 page1_dma = ioc->fc_data.fc_port_page1[portnum].dma;
953 data_sz = ioc->fc_data.fc_port_page1[portnum].pg_sz;
954 if (hdr.PageLength * 4 > data_sz) {
955 ioc->fc_data.fc_port_page1[portnum].data = NULL;
956 dma_free_coherent(dev: &ioc->pcidev->dev, size: data_sz,
957 cpu_addr: page1_alloc, dma_handle: page1_dma);
958 goto start_over;
959 }
960 }
961
962 cfg.physAddr = page1_dma;
963 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
964
965 if ((rc = mpt_config(ioc, cfg: &cfg)) == 0) {
966 ioc->fc_data.fc_port_page1[portnum].data = page1_alloc;
967 ioc->fc_data.fc_port_page1[portnum].pg_sz = data_sz;
968 ioc->fc_data.fc_port_page1[portnum].dma = page1_dma;
969 }
970 else {
971 ioc->fc_data.fc_port_page1[portnum].data = NULL;
972 dma_free_coherent(dev: &ioc->pcidev->dev, size: data_sz, cpu_addr: page1_alloc,
973 dma_handle: page1_dma);
974 }
975
976 return rc;
977}
978
979static void
980mptfc_SetFcPortPage1_defaults(MPT_ADAPTER *ioc)
981{
982 int ii;
983 FCPortPage1_t *pp1;
984
985 #define MPTFC_FW_DEVICE_TIMEOUT (1)
986 #define MPTFC_FW_IO_PEND_TIMEOUT (1)
987 #define ON_FLAGS (MPI_FCPORTPAGE1_FLAGS_IMMEDIATE_ERROR_REPLY)
988 #define OFF_FLAGS (MPI_FCPORTPAGE1_FLAGS_VERBOSE_RESCAN_EVENTS)
989
990 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
991 if (mptfc_GetFcPortPage1(ioc, portnum: ii) != 0)
992 continue;
993 pp1 = ioc->fc_data.fc_port_page1[ii].data;
994 if ((pp1->InitiatorDeviceTimeout == MPTFC_FW_DEVICE_TIMEOUT)
995 && (pp1->InitiatorIoPendTimeout == MPTFC_FW_IO_PEND_TIMEOUT)
996 && ((pp1->Flags & ON_FLAGS) == ON_FLAGS)
997 && ((pp1->Flags & OFF_FLAGS) == 0))
998 continue;
999 pp1->InitiatorDeviceTimeout = MPTFC_FW_DEVICE_TIMEOUT;
1000 pp1->InitiatorIoPendTimeout = MPTFC_FW_IO_PEND_TIMEOUT;
1001 pp1->Flags &= ~OFF_FLAGS;
1002 pp1->Flags |= ON_FLAGS;
1003 mptfc_WriteFcPortPage1(ioc, portnum: ii);
1004 }
1005}
1006
1007
1008static void
1009mptfc_init_host_attr(MPT_ADAPTER *ioc,int portnum)
1010{
1011 unsigned class = 0;
1012 unsigned cos = 0;
1013 unsigned speed;
1014 unsigned port_type;
1015 unsigned port_state;
1016 FCPortPage0_t *pp0;
1017 struct Scsi_Host *sh;
1018 char *sn;
1019
1020 /* don't know what to do as only one scsi (fc) host was allocated */
1021 if (portnum != 0)
1022 return;
1023
1024 pp0 = &ioc->fc_port_page0[portnum];
1025 sh = ioc->sh;
1026
1027 sn = fc_host_symbolic_name(sh);
1028 snprintf(buf: sn, FC_SYMBOLIC_NAME_SIZE, fmt: "%s %s%08xh",
1029 ioc->prod_name,
1030 MPT_FW_REV_MAGIC_ID_STRING,
1031 ioc->facts.FWVersion.Word);
1032
1033 fc_host_tgtid_bind_type(sh) = FC_TGTID_BIND_BY_WWPN;
1034
1035 fc_host_maxframe_size(sh) = pp0->MaxFrameSize;
1036
1037 fc_host_node_name(sh) =
1038 (u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;
1039
1040 fc_host_port_name(sh) =
1041 (u64)pp0->WWPN.High << 32 | (u64)pp0->WWPN.Low;
1042
1043 fc_host_port_id(sh) = pp0->PortIdentifier;
1044
1045 class = pp0->SupportedServiceClass;
1046 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_1)
1047 cos |= FC_COS_CLASS1;
1048 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_2)
1049 cos |= FC_COS_CLASS2;
1050 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_3)
1051 cos |= FC_COS_CLASS3;
1052 fc_host_supported_classes(sh) = cos;
1053
1054 if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT)
1055 speed = FC_PORTSPEED_1GBIT;
1056 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT)
1057 speed = FC_PORTSPEED_2GBIT;
1058 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT)
1059 speed = FC_PORTSPEED_4GBIT;
1060 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_10GBIT)
1061 speed = FC_PORTSPEED_10GBIT;
1062 else
1063 speed = FC_PORTSPEED_UNKNOWN;
1064 fc_host_speed(sh) = speed;
1065
1066 speed = 0;
1067 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_1GBIT_SPEED)
1068 speed |= FC_PORTSPEED_1GBIT;
1069 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_2GBIT_SPEED)
1070 speed |= FC_PORTSPEED_2GBIT;
1071 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_4GBIT_SPEED)
1072 speed |= FC_PORTSPEED_4GBIT;
1073 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_10GBIT_SPEED)
1074 speed |= FC_PORTSPEED_10GBIT;
1075 fc_host_supported_speeds(sh) = speed;
1076
1077 port_state = FC_PORTSTATE_UNKNOWN;
1078 if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE)
1079 port_state = FC_PORTSTATE_ONLINE;
1080 else if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_OFFLINE)
1081 port_state = FC_PORTSTATE_LINKDOWN;
1082 fc_host_port_state(sh) = port_state;
1083
1084 port_type = FC_PORTTYPE_UNKNOWN;
1085 if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_POINT_TO_POINT)
1086 port_type = FC_PORTTYPE_PTP;
1087 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PRIVATE_LOOP)
1088 port_type = FC_PORTTYPE_LPORT;
1089 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PUBLIC_LOOP)
1090 port_type = FC_PORTTYPE_NLPORT;
1091 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_FABRIC_DIRECT)
1092 port_type = FC_PORTTYPE_NPORT;
1093 fc_host_port_type(sh) = port_type;
1094
1095 fc_host_fabric_name(sh) =
1096 (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_FABRIC_WWN_VALID) ?
1097 (u64) pp0->FabricWWNN.High << 32 | (u64) pp0->FabricWWPN.Low :
1098 (u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;
1099
1100}
1101
1102static void
1103mptfc_link_status_change(struct work_struct *work)
1104{
1105 MPT_ADAPTER *ioc =
1106 container_of(work, MPT_ADAPTER, fc_rescan_work);
1107 int ii;
1108
1109 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++)
1110 (void) mptfc_GetFcPortPage0(ioc, portnum: ii);
1111
1112}
1113
1114static void
1115mptfc_setup_reset(struct work_struct *work)
1116{
1117 MPT_ADAPTER *ioc =
1118 container_of(work, MPT_ADAPTER, fc_setup_reset_work);
1119 u64 pn;
1120 struct mptfc_rport_info *ri;
1121 struct scsi_target *starget;
1122 VirtTarget *vtarget;
1123
1124 /* reset about to happen, delete (block) all rports */
1125 list_for_each_entry(ri, &ioc->fc_rports, list) {
1126 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
1127 ri->flags &= ~MPT_RPORT_INFO_FLAGS_REGISTERED;
1128 fc_remote_port_delete(rport: ri->rport); /* won't sleep */
1129 ri->rport = NULL;
1130 starget = ri->starget;
1131 if (starget) {
1132 vtarget = starget->hostdata;
1133 if (vtarget)
1134 vtarget->deleted = 1;
1135 }
1136
1137 pn = (u64)ri->pg0.WWPN.High << 32 |
1138 (u64)ri->pg0.WWPN.Low;
1139 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
1140 "mptfc_setup_reset.%d: %llx deleted\n",
1141 ioc->name,
1142 ioc->sh->host_no,
1143 (unsigned long long)pn));
1144 }
1145 }
1146}
1147
1148static void
1149mptfc_rescan_devices(struct work_struct *work)
1150{
1151 MPT_ADAPTER *ioc =
1152 container_of(work, MPT_ADAPTER, fc_rescan_work);
1153 int ii;
1154 u64 pn;
1155 struct mptfc_rport_info *ri;
1156 struct scsi_target *starget;
1157 VirtTarget *vtarget;
1158
1159 /* start by tagging all ports as missing */
1160 list_for_each_entry(ri, &ioc->fc_rports, list) {
1161 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
1162 ri->flags |= MPT_RPORT_INFO_FLAGS_MISSING;
1163 }
1164 }
1165
1166 /*
1167 * now rescan devices known to adapter,
1168 * will reregister existing rports
1169 */
1170 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1171 (void) mptfc_GetFcPortPage0(ioc, portnum: ii);
1172 mptfc_init_host_attr(ioc, portnum: ii); /* refresh */
1173 mptfc_GetFcDevPage0(ioc, ioc_port: ii, func: mptfc_register_dev);
1174 }
1175
1176 /* delete devices still missing */
1177 list_for_each_entry(ri, &ioc->fc_rports, list) {
1178 /* if newly missing, delete it */
1179 if (ri->flags & MPT_RPORT_INFO_FLAGS_MISSING) {
1180
1181 ri->flags &= ~(MPT_RPORT_INFO_FLAGS_REGISTERED|
1182 MPT_RPORT_INFO_FLAGS_MISSING);
1183 fc_remote_port_delete(rport: ri->rport); /* won't sleep */
1184 ri->rport = NULL;
1185 starget = ri->starget;
1186 if (starget) {
1187 vtarget = starget->hostdata;
1188 if (vtarget)
1189 vtarget->deleted = 1;
1190 }
1191
1192 pn = (u64)ri->pg0.WWPN.High << 32 |
1193 (u64)ri->pg0.WWPN.Low;
1194 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
1195 "mptfc_rescan.%d: %llx deleted\n",
1196 ioc->name,
1197 ioc->sh->host_no,
1198 (unsigned long long)pn));
1199 }
1200 }
1201}
1202
1203static int
1204mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1205{
1206 struct Scsi_Host *sh;
1207 MPT_SCSI_HOST *hd;
1208 MPT_ADAPTER *ioc;
1209 unsigned long flags;
1210 int ii;
1211 int numSGE = 0;
1212 int scale;
1213 int ioc_cap;
1214 int error=0;
1215 int r;
1216
1217 if ((r = mpt_attach(pdev,id)) != 0)
1218 return r;
1219
1220 ioc = pci_get_drvdata(pdev);
1221 ioc->DoneCtx = mptfcDoneCtx;
1222 ioc->TaskCtx = mptfcTaskCtx;
1223 ioc->InternalCtx = mptfcInternalCtx;
1224
1225 /* Added sanity check on readiness of the MPT adapter.
1226 */
1227 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
1228 printk(MYIOC_s_WARN_FMT
1229 "Skipping because it's not operational!\n",
1230 ioc->name);
1231 error = -ENODEV;
1232 goto out_mptfc_probe;
1233 }
1234
1235 if (!ioc->active) {
1236 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
1237 ioc->name);
1238 error = -ENODEV;
1239 goto out_mptfc_probe;
1240 }
1241
1242 /* Sanity check - ensure at least 1 port is INITIATOR capable
1243 */
1244 ioc_cap = 0;
1245 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1246 if (ioc->pfacts[ii].ProtocolFlags &
1247 MPI_PORTFACTS_PROTOCOL_INITIATOR)
1248 ioc_cap ++;
1249 }
1250
1251 if (!ioc_cap) {
1252 printk(MYIOC_s_WARN_FMT
1253 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
1254 ioc->name, ioc);
1255 return 0;
1256 }
1257
1258 sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));
1259
1260 if (!sh) {
1261 printk(MYIOC_s_WARN_FMT
1262 "Unable to register controller with SCSI subsystem\n",
1263 ioc->name);
1264 error = -1;
1265 goto out_mptfc_probe;
1266 }
1267
1268 spin_lock_init(&ioc->fc_rescan_work_lock);
1269 INIT_WORK(&ioc->fc_rescan_work, mptfc_rescan_devices);
1270 INIT_WORK(&ioc->fc_setup_reset_work, mptfc_setup_reset);
1271 INIT_WORK(&ioc->fc_lsc_work, mptfc_link_status_change);
1272
1273 spin_lock_irqsave(&ioc->FreeQlock, flags);
1274
1275 /* Attach the SCSI Host to the IOC structure
1276 */
1277 ioc->sh = sh;
1278
1279 sh->io_port = 0;
1280 sh->n_io_port = 0;
1281 sh->irq = 0;
1282
1283 /* set 16 byte cdb's */
1284 sh->max_cmd_len = 16;
1285
1286 sh->max_id = ioc->pfacts->MaxDevices;
1287 sh->max_lun = max_lun;
1288
1289 /* Required entry.
1290 */
1291 sh->unique_id = ioc->id;
1292
1293 /* Verify that we won't exceed the maximum
1294 * number of chain buffers
1295 * We can optimize: ZZ = req_sz/sizeof(SGE)
1296 * For 32bit SGE's:
1297 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
1298 * + (req_sz - 64)/sizeof(SGE)
1299 * A slightly different algorithm is required for
1300 * 64bit SGEs.
1301 */
1302 scale = ioc->req_sz/ioc->SGE_size;
1303 if (ioc->sg_addr_size == sizeof(u64)) {
1304 numSGE = (scale - 1) *
1305 (ioc->facts.MaxChainDepth-1) + scale +
1306 (ioc->req_sz - 60) / ioc->SGE_size;
1307 } else {
1308 numSGE = 1 + (scale - 1) *
1309 (ioc->facts.MaxChainDepth-1) + scale +
1310 (ioc->req_sz - 64) / ioc->SGE_size;
1311 }
1312
1313 if (numSGE < sh->sg_tablesize) {
1314 /* Reset this value */
1315 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1316 "Resetting sg_tablesize to %d from %d\n",
1317 ioc->name, numSGE, sh->sg_tablesize));
1318 sh->sg_tablesize = numSGE;
1319 }
1320
1321 spin_unlock_irqrestore(lock: &ioc->FreeQlock, flags);
1322
1323 hd = shost_priv(shost: sh);
1324 hd->ioc = ioc;
1325
1326 /* SCSI needs scsi_cmnd lookup table!
1327 * (with size equal to req_depth*PtrSz!)
1328 */
1329 ioc->ScsiLookup = kcalloc(n: ioc->req_depth, size: sizeof(void *), GFP_KERNEL);
1330 if (!ioc->ScsiLookup) {
1331 error = -ENOMEM;
1332 goto out_mptfc_probe;
1333 }
1334 spin_lock_init(&ioc->scsi_lookup_lock);
1335
1336 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "ScsiLookup @ %p\n",
1337 ioc->name, ioc->ScsiLookup));
1338
1339 hd->last_queue_full = 0;
1340
1341 sh->transportt = mptfc_transport_template;
1342 error = scsi_add_host (host: sh, dev: &ioc->pcidev->dev);
1343 if(error) {
1344 dprintk(ioc, printk(MYIOC_s_ERR_FMT
1345 "scsi_add_host failed\n", ioc->name));
1346 goto out_mptfc_probe;
1347 }
1348
1349 /* initialize workqueue */
1350
1351 snprintf(buf: ioc->fc_rescan_work_q_name, size: sizeof(ioc->fc_rescan_work_q_name),
1352 fmt: "mptfc_wq_%d", sh->host_no);
1353 ioc->fc_rescan_work_q =
1354 alloc_ordered_workqueue(ioc->fc_rescan_work_q_name,
1355 WQ_MEM_RECLAIM);
1356 if (!ioc->fc_rescan_work_q) {
1357 error = -ENOMEM;
1358 goto out_mptfc_host;
1359 }
1360
1361 /*
1362 * Pre-fetch FC port WWN and stuff...
1363 * (FCPortPage0_t stuff)
1364 */
1365 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1366 (void) mptfc_GetFcPortPage0(ioc, portnum: ii);
1367 }
1368 mptfc_SetFcPortPage1_defaults(ioc);
1369
1370 /*
1371 * scan for rports -
1372 * by doing it via the workqueue, some locking is eliminated
1373 */
1374
1375 queue_work(wq: ioc->fc_rescan_work_q, work: &ioc->fc_rescan_work);
1376 flush_workqueue(ioc->fc_rescan_work_q);
1377
1378 return 0;
1379
1380out_mptfc_host:
1381 scsi_remove_host(sh);
1382
1383out_mptfc_probe:
1384
1385 mptscsih_remove(pdev);
1386 return error;
1387}
1388
1389static struct pci_driver mptfc_driver = {
1390 .name = "mptfc",
1391 .id_table = mptfc_pci_table,
1392 .probe = mptfc_probe,
1393 .remove = mptfc_remove,
1394 .shutdown = mptscsih_shutdown,
1395#ifdef CONFIG_PM
1396 .suspend = mptscsih_suspend,
1397 .resume = mptscsih_resume,
1398#endif
1399};
1400
1401static int
1402mptfc_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
1403{
1404 MPT_SCSI_HOST *hd;
1405 u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
1406 unsigned long flags;
1407 int rc=1;
1408
1409 if (ioc->bus_type != FC)
1410 return 0;
1411
1412 devtverboseprintk(ioc, printk(MYIOC_s_DEBUG_FMT "MPT event (=%02Xh) routed to SCSI host driver!\n",
1413 ioc->name, event));
1414
1415 if (ioc->sh == NULL ||
1416 ((hd = shost_priv(shost: ioc->sh)) == NULL))
1417 return 1;
1418
1419 switch (event) {
1420 case MPI_EVENT_RESCAN:
1421 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1422 if (ioc->fc_rescan_work_q) {
1423 queue_work(wq: ioc->fc_rescan_work_q,
1424 work: &ioc->fc_rescan_work);
1425 }
1426 spin_unlock_irqrestore(lock: &ioc->fc_rescan_work_lock, flags);
1427 break;
1428 case MPI_EVENT_LINK_STATUS_CHANGE:
1429 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1430 if (ioc->fc_rescan_work_q) {
1431 queue_work(wq: ioc->fc_rescan_work_q,
1432 work: &ioc->fc_lsc_work);
1433 }
1434 spin_unlock_irqrestore(lock: &ioc->fc_rescan_work_lock, flags);
1435 break;
1436 default:
1437 rc = mptscsih_event_process(ioc,pEvReply);
1438 break;
1439 }
1440 return rc;
1441}
1442
1443static int
1444mptfc_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
1445{
1446 int rc;
1447 unsigned long flags;
1448
1449 rc = mptscsih_ioc_reset(ioc,post_reset: reset_phase);
1450 if ((ioc->bus_type != FC) || (!rc))
1451 return rc;
1452
1453
1454 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1455 ": IOC %s_reset routed to FC host driver!\n",ioc->name,
1456 reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
1457 reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));
1458
1459 if (reset_phase == MPT_IOC_SETUP_RESET) {
1460 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1461 if (ioc->fc_rescan_work_q) {
1462 queue_work(wq: ioc->fc_rescan_work_q,
1463 work: &ioc->fc_setup_reset_work);
1464 }
1465 spin_unlock_irqrestore(lock: &ioc->fc_rescan_work_lock, flags);
1466 }
1467
1468 else if (reset_phase == MPT_IOC_PRE_RESET) {
1469 }
1470
1471 else { /* MPT_IOC_POST_RESET */
1472 mptfc_SetFcPortPage1_defaults(ioc);
1473 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1474 if (ioc->fc_rescan_work_q) {
1475 queue_work(wq: ioc->fc_rescan_work_q,
1476 work: &ioc->fc_rescan_work);
1477 }
1478 spin_unlock_irqrestore(lock: &ioc->fc_rescan_work_lock, flags);
1479 }
1480 return 1;
1481}
1482
1483/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1484/**
1485 * mptfc_init - Register MPT adapter(s) as SCSI host(s) with SCSI mid-layer.
1486 *
1487 * Returns 0 for success, non-zero for failure.
1488 */
1489static int __init
1490mptfc_init(void)
1491{
1492 int error;
1493
1494 show_mptmod_ver(my_NAME, my_VERSION);
1495
1496 /* sanity check module parameters */
1497 if (mptfc_dev_loss_tmo <= 0)
1498 mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO;
1499
1500 mptfc_transport_template =
1501 fc_attach_transport(&mptfc_transport_functions);
1502
1503 if (!mptfc_transport_template)
1504 return -ENODEV;
1505
1506 mptfcDoneCtx = mpt_register(cbfunc: mptscsih_io_done, dclass: MPTFC_DRIVER,
1507 func_name: "mptscsih_scandv_complete");
1508 mptfcTaskCtx = mpt_register(cbfunc: mptscsih_taskmgmt_complete, dclass: MPTFC_DRIVER,
1509 func_name: "mptscsih_scandv_complete");
1510 mptfcInternalCtx = mpt_register(cbfunc: mptscsih_scandv_complete, dclass: MPTFC_DRIVER,
1511 func_name: "mptscsih_scandv_complete");
1512
1513 mpt_event_register(cb_idx: mptfcDoneCtx, ev_cbfunc: mptfc_event_process);
1514 mpt_reset_register(cb_idx: mptfcDoneCtx, reset_func: mptfc_ioc_reset);
1515
1516 error = pci_register_driver(&mptfc_driver);
1517 if (error)
1518 fc_release_transport(mptfc_transport_template);
1519
1520 return error;
1521}
1522
1523/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1524/**
1525 * mptfc_remove - Remove fc infrastructure for devices
1526 * @pdev: Pointer to pci_dev structure
1527 *
1528 */
1529static void mptfc_remove(struct pci_dev *pdev)
1530{
1531 MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
1532 struct mptfc_rport_info *p, *n;
1533 struct workqueue_struct *work_q;
1534 unsigned long flags;
1535 int ii;
1536
1537 /* destroy workqueue */
1538 if ((work_q=ioc->fc_rescan_work_q)) {
1539 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1540 ioc->fc_rescan_work_q = NULL;
1541 spin_unlock_irqrestore(lock: &ioc->fc_rescan_work_lock, flags);
1542 destroy_workqueue(wq: work_q);
1543 }
1544
1545 fc_remove_host(ioc->sh);
1546
1547 list_for_each_entry_safe(p, n, &ioc->fc_rports, list) {
1548 list_del(entry: &p->list);
1549 kfree(objp: p);
1550 }
1551
1552 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
1553 if (ioc->fc_data.fc_port_page1[ii].data) {
1554 dma_free_coherent(dev: &ioc->pcidev->dev,
1555 size: ioc->fc_data.fc_port_page1[ii].pg_sz,
1556 cpu_addr: ioc->fc_data.fc_port_page1[ii].data,
1557 dma_handle: ioc->fc_data.fc_port_page1[ii].dma);
1558 ioc->fc_data.fc_port_page1[ii].data = NULL;
1559 }
1560 }
1561
1562 scsi_remove_host(ioc->sh);
1563
1564 mptscsih_remove(pdev);
1565}
1566
1567/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1568/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1569/**
1570 * mptfc_exit - Unregisters MPT adapter(s)
1571 *
1572 */
1573static void __exit
1574mptfc_exit(void)
1575{
1576 pci_unregister_driver(dev: &mptfc_driver);
1577 fc_release_transport(mptfc_transport_template);
1578
1579 mpt_reset_deregister(cb_idx: mptfcDoneCtx);
1580 mpt_event_deregister(cb_idx: mptfcDoneCtx);
1581
1582 mpt_deregister(cb_idx: mptfcInternalCtx);
1583 mpt_deregister(cb_idx: mptfcTaskCtx);
1584 mpt_deregister(cb_idx: mptfcDoneCtx);
1585}
1586
1587module_init(mptfc_init);
1588module_exit(mptfc_exit);
1589

source code of linux/drivers/message/fusion/mptfc.c