projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
[deliverable/linux.git] / drivers / scsi / mpt3sas / mpt3sas_transport.c
1 /*
2 * SAS Transport Layer for MPT (Message Passing Technology) based controllers
3 *
4 * This code is based on drivers/scsi/mpt3sas/mpt3sas_transport.c
5 * Copyright (C) 2012-2014 LSI Corporation
6 * Copyright (C) 2013-2014 Avago Technologies
7 * (mailto: MPT-FusionLinux.pdl@avagotech.com)
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2
12 * of the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * NO WARRANTY
20 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
21 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
22 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
23 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
24 * solely responsible for determining the appropriateness of using and
25 * distributing the Program and assumes all risks associated with its
26 * exercise of rights under this Agreement, including but not limited to
27 * the risks and costs of program errors, damage to or loss of data,
28 * programs or equipment, and unavailability or interruption of operations.
29
30 * DISCLAIMER OF LIABILITY
31 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
32 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
34 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
35 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
36 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
37 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
38
39 * You should have received a copy of the GNU General Public License
40 * along with this program; if not, write to the Free Software
41 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
42 * USA.
43 */
44
45 #include <linux/module.h>
46 #include <linux/kernel.h>
47 #include <linux/init.h>
48 #include <linux/errno.h>
49 #include <linux/sched.h>
50 #include <linux/workqueue.h>
51 #include <linux/delay.h>
52 #include <linux/pci.h>
53
54 #include <scsi/scsi.h>
55 #include <scsi/scsi_cmnd.h>
56 #include <scsi/scsi_device.h>
57 #include <scsi/scsi_host.h>
58 #include <scsi/scsi_transport_sas.h>
59 #include <scsi/scsi_dbg.h>
60
61 #include "mpt3sas_base.h"
62
63 /**
64 * _transport_sas_node_find_by_sas_address - sas node search
65 * @ioc: per adapter object
66 * @sas_address: sas address of expander or sas host
67 * Context: Calling function should acquire ioc->sas_node_lock.
68 *
69 * Search for either hba phys or expander device based on handle, then returns
70 * the sas_node object.
71 */
72 static struct _sas_node *
73 _transport_sas_node_find_by_sas_address(struct MPT3SAS_ADAPTER *ioc,
74 u64 sas_address)
75 {
76 if (ioc->sas_hba.sas_address == sas_address)
77 return &ioc->sas_hba;
78 else
79 return mpt3sas_scsih_expander_find_by_sas_address(ioc,
80 sas_address);
81 }
82
83 /**
84 * _transport_convert_phy_link_rate -
85 * @link_rate: link rate returned from mpt firmware
86 *
87 * Convert link_rate from mpi fusion into sas_transport form.
88 */
89 static enum sas_linkrate
90 _transport_convert_phy_link_rate(u8 link_rate)
91 {
92 enum sas_linkrate rc;
93
94 switch (link_rate) {
95 case MPI2_SAS_NEG_LINK_RATE_1_5:
96 rc = SAS_LINK_RATE_1_5_GBPS;
97 break;
98 case MPI2_SAS_NEG_LINK_RATE_3_0:
99 rc = SAS_LINK_RATE_3_0_GBPS;
100 break;
101 case MPI2_SAS_NEG_LINK_RATE_6_0:
102 rc = SAS_LINK_RATE_6_0_GBPS;
103 break;
104 case MPI25_SAS_NEG_LINK_RATE_12_0:
105 rc = SAS_LINK_RATE_12_0_GBPS;
106 break;
107 case MPI2_SAS_NEG_LINK_RATE_PHY_DISABLED:
108 rc = SAS_PHY_DISABLED;
109 break;
110 case MPI2_SAS_NEG_LINK_RATE_NEGOTIATION_FAILED:
111 rc = SAS_LINK_RATE_FAILED;
112 break;
113 case MPI2_SAS_NEG_LINK_RATE_PORT_SELECTOR:
114 rc = SAS_SATA_PORT_SELECTOR;
115 break;
116 case MPI2_SAS_NEG_LINK_RATE_SMP_RESET_IN_PROGRESS:
117 rc = SAS_PHY_RESET_IN_PROGRESS;
118 break;
119
120 default:
121 case MPI2_SAS_NEG_LINK_RATE_SATA_OOB_COMPLETE:
122 case MPI2_SAS_NEG_LINK_RATE_UNKNOWN_LINK_RATE:
123 rc = SAS_LINK_RATE_UNKNOWN;
124 break;
125 }
126 return rc;
127 }
128
129 /**
130 * _transport_set_identify - set identify for phys and end devices
131 * @ioc: per adapter object
132 * @handle: device handle
133 * @identify: sas identify info
134 *
135 * Populates sas identify info.
136 *
137 * Returns 0 for success, non-zero for failure.
138 */
139 static int
140 _transport_set_identify(struct MPT3SAS_ADAPTER *ioc, u16 handle,
141 struct sas_identify *identify)
142 {
143 Mpi2SasDevicePage0_t sas_device_pg0;
144 Mpi2ConfigReply_t mpi_reply;
145 u32 device_info;
146 u32 ioc_status;
147
148 if (ioc->shost_recovery || ioc->pci_error_recovery) {
149 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
150 __func__, ioc->name);
151 return -EFAULT;
152 }
153
154 if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
155 MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
156 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
157 ioc->name, __FILE__, __LINE__, __func__);
158 return -ENXIO;
159 }
160
161 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
162 MPI2_IOCSTATUS_MASK;
163 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
164 pr_err(MPT3SAS_FMT
165 "handle(0x%04x), ioc_status(0x%04x)\nfailure at %s:%d/%s()!\n",
166 ioc->name, handle, ioc_status,
167 __FILE__, __LINE__, __func__);
168 return -EIO;
169 }
170
171 memset(identify, 0, sizeof(struct sas_identify));
172 device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
173
174 /* sas_address */
175 identify->sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
176
177 /* phy number of the parent device this device is linked to */
178 identify->phy_identifier = sas_device_pg0.PhyNum;
179
180 /* device_type */
181 switch (device_info & MPI2_SAS_DEVICE_INFO_MASK_DEVICE_TYPE) {
182 case MPI2_SAS_DEVICE_INFO_NO_DEVICE:
183 identify->device_type = SAS_PHY_UNUSED;
184 break;
185 case MPI2_SAS_DEVICE_INFO_END_DEVICE:
186 identify->device_type = SAS_END_DEVICE;
187 break;
188 case MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER:
189 identify->device_type = SAS_EDGE_EXPANDER_DEVICE;
190 break;
191 case MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER:
192 identify->device_type = SAS_FANOUT_EXPANDER_DEVICE;
193 break;
194 }
195
196 /* initiator_port_protocols */
197 if (device_info & MPI2_SAS_DEVICE_INFO_SSP_INITIATOR)
198 identify->initiator_port_protocols |= SAS_PROTOCOL_SSP;
199 if (device_info & MPI2_SAS_DEVICE_INFO_STP_INITIATOR)
200 identify->initiator_port_protocols |= SAS_PROTOCOL_STP;
201 if (device_info & MPI2_SAS_DEVICE_INFO_SMP_INITIATOR)
202 identify->initiator_port_protocols |= SAS_PROTOCOL_SMP;
203 if (device_info & MPI2_SAS_DEVICE_INFO_SATA_HOST)
204 identify->initiator_port_protocols |= SAS_PROTOCOL_SATA;
205
206 /* target_port_protocols */
207 if (device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET)
208 identify->target_port_protocols |= SAS_PROTOCOL_SSP;
209 if (device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET)
210 identify->target_port_protocols |= SAS_PROTOCOL_STP;
211 if (device_info & MPI2_SAS_DEVICE_INFO_SMP_TARGET)
212 identify->target_port_protocols |= SAS_PROTOCOL_SMP;
213 if (device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
214 identify->target_port_protocols |= SAS_PROTOCOL_SATA;
215
216 return 0;
217 }
218
219 /**
220 * mpt3sas_transport_done - internal transport layer callback handler.
221 * @ioc: per adapter object
222 * @smid: system request message index
223 * @msix_index: MSIX table index supplied by the OS
224 * @reply: reply message frame(lower 32bit addr)
225 *
226 * Callback handler when sending internal generated transport cmds.
227 * The callback index passed is `ioc->transport_cb_idx`
228 *
229 * Return 1 meaning mf should be freed from _base_interrupt
230 * 0 means the mf is freed from this function.
231 */
232 u8
233 mpt3sas_transport_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
234 u32 reply)
235 {
236 MPI2DefaultReply_t *mpi_reply;
237
238 mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
239 if (ioc->transport_cmds.status == MPT3_CMD_NOT_USED)
240 return 1;
241 if (ioc->transport_cmds.smid != smid)
242 return 1;
243 ioc->transport_cmds.status |= MPT3_CMD_COMPLETE;
244 if (mpi_reply) {
245 memcpy(ioc->transport_cmds.reply, mpi_reply,
246 mpi_reply->MsgLength*4);
247 ioc->transport_cmds.status |= MPT3_CMD_REPLY_VALID;
248 }
249 ioc->transport_cmds.status &= ~MPT3_CMD_PENDING;
250 complete(&ioc->transport_cmds.done);
251 return 1;
252 }
253
254 /* report manufacture request structure */
255 struct rep_manu_request {
256 u8 smp_frame_type;
257 u8 function;
258 u8 reserved;
259 u8 request_length;
260 };
261
262 /* report manufacture reply structure */
263 struct rep_manu_reply {
264 u8 smp_frame_type; /* 0x41 */
265 u8 function; /* 0x01 */
266 u8 function_result;
267 u8 response_length;
268 u16 expander_change_count;
269 u8 reserved0[2];
270 u8 sas_format;
271 u8 reserved2[3];
272 u8 vendor_id[SAS_EXPANDER_VENDOR_ID_LEN];
273 u8 product_id[SAS_EXPANDER_PRODUCT_ID_LEN];
274 u8 product_rev[SAS_EXPANDER_PRODUCT_REV_LEN];
275 u8 component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN];
276 u16 component_id;
277 u8 component_revision_id;
278 u8 reserved3;
279 u8 vendor_specific[8];
280 };
281
282 /**
283 * transport_expander_report_manufacture - obtain SMP report_manufacture
284 * @ioc: per adapter object
285 * @sas_address: expander sas address
286 * @edev: the sas_expander_device object
287 *
288 * Fills in the sas_expander_device object when SMP port is created.
289 *
290 * Returns 0 for success, non-zero for failure.
291 */
292 static int
293 _transport_expander_report_manufacture(struct MPT3SAS_ADAPTER *ioc,
294 u64 sas_address, struct sas_expander_device *edev)
295 {
296 Mpi2SmpPassthroughRequest_t *mpi_request;
297 Mpi2SmpPassthroughReply_t *mpi_reply;
298 struct rep_manu_reply *manufacture_reply;
299 struct rep_manu_request *manufacture_request;
300 int rc;
301 u16 smid;
302 u32 ioc_state;
303 unsigned long timeleft;
304 void *psge;
305 u8 issue_reset = 0;
306 void *data_out = NULL;
307 dma_addr_t data_out_dma;
308 dma_addr_t data_in_dma;
309 size_t data_in_sz;
310 size_t data_out_sz;
311 u16 wait_state_count;
312
313 if (ioc->shost_recovery || ioc->pci_error_recovery) {
314 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
315 __func__, ioc->name);
316 return -EFAULT;
317 }
318
319 mutex_lock(&ioc->transport_cmds.mutex);
320
321 if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
322 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n",
323 ioc->name, __func__);
324 rc = -EAGAIN;
325 goto out;
326 }
327 ioc->transport_cmds.status = MPT3_CMD_PENDING;
328
329 wait_state_count = 0;
330 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
331 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
332 if (wait_state_count++ == 10) {
333 pr_err(MPT3SAS_FMT
334 "%s: failed due to ioc not operational\n",
335 ioc->name, __func__);
336 rc = -EFAULT;
337 goto out;
338 }
339 ssleep(1);
340 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
341 pr_info(MPT3SAS_FMT
342 "%s: waiting for operational state(count=%d)\n",
343 ioc->name, __func__, wait_state_count);
344 }
345 if (wait_state_count)
346 pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
347 ioc->name, __func__);
348
349 smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
350 if (!smid) {
351 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
352 ioc->name, __func__);
353 rc = -EAGAIN;
354 goto out;
355 }
356
357 rc = 0;
358 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
359 ioc->transport_cmds.smid = smid;
360
361 data_out_sz = sizeof(struct rep_manu_request);
362 data_in_sz = sizeof(struct rep_manu_reply);
363 data_out = pci_alloc_consistent(ioc->pdev, data_out_sz + data_in_sz,
364 &data_out_dma);
365
366 if (!data_out) {
367 pr_err("failure at %s:%d/%s()!\n", __FILE__,
368 __LINE__, __func__);
369 rc = -ENOMEM;
370 mpt3sas_base_free_smid(ioc, smid);
371 goto out;
372 }
373
374 data_in_dma = data_out_dma + sizeof(struct rep_manu_request);
375
376 manufacture_request = data_out;
377 manufacture_request->smp_frame_type = 0x40;
378 manufacture_request->function = 1;
379 manufacture_request->reserved = 0;
380 manufacture_request->request_length = 0;
381
382 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
383 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
384 mpi_request->PhysicalPort = 0xFF;
385 mpi_request->SASAddress = cpu_to_le64(sas_address);
386 mpi_request->RequestDataLength = cpu_to_le16(data_out_sz);
387 psge = &mpi_request->SGL;
388
389 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
390 data_in_sz);
391
392 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
393 "report_manufacture - send to sas_addr(0x%016llx)\n",
394 ioc->name, (unsigned long long)sas_address));
395 init_completion(&ioc->transport_cmds.done);
396 mpt3sas_base_put_smid_default(ioc, smid);
397 timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
398 10*HZ);
399
400 if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
401 pr_err(MPT3SAS_FMT "%s: timeout\n",
402 ioc->name, __func__);
403 _debug_dump_mf(mpi_request,
404 sizeof(Mpi2SmpPassthroughRequest_t)/4);
405 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
406 issue_reset = 1;
407 goto issue_host_reset;
408 }
409
410 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
411 "report_manufacture - complete\n", ioc->name));
412
413 if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
414 u8 *tmp;
415
416 mpi_reply = ioc->transport_cmds.reply;
417
418 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
419 "report_manufacture - reply data transfer size(%d)\n",
420 ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
421
422 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
423 sizeof(struct rep_manu_reply))
424 goto out;
425
426 manufacture_reply = data_out + sizeof(struct rep_manu_request);
427 strncpy(edev->vendor_id, manufacture_reply->vendor_id,
428 SAS_EXPANDER_VENDOR_ID_LEN);
429 strncpy(edev->product_id, manufacture_reply->product_id,
430 SAS_EXPANDER_PRODUCT_ID_LEN);
431 strncpy(edev->product_rev, manufacture_reply->product_rev,
432 SAS_EXPANDER_PRODUCT_REV_LEN);
433 edev->level = manufacture_reply->sas_format & 1;
434 if (edev->level) {
435 strncpy(edev->component_vendor_id,
436 manufacture_reply->component_vendor_id,
437 SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN);
438 tmp = (u8 *)&manufacture_reply->component_id;
439 edev->component_id = tmp[0] << 8 | tmp[1];
440 edev->component_revision_id =
441 manufacture_reply->component_revision_id;
442 }
443 } else
444 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
445 "report_manufacture - no reply\n", ioc->name));
446
447 issue_host_reset:
448 if (issue_reset)
449 mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
450 FORCE_BIG_HAMMER);
451 out:
452 ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
453 if (data_out)
454 pci_free_consistent(ioc->pdev, data_out_sz + data_in_sz,
455 data_out, data_out_dma);
456
457 mutex_unlock(&ioc->transport_cmds.mutex);
458 return rc;
459 }
460
461
462 /**
463 * _transport_delete_port - helper function to removing a port
464 * @ioc: per adapter object
465 * @mpt3sas_port: mpt3sas per port object
466 *
467 * Returns nothing.
468 */
469 static void
470 _transport_delete_port(struct MPT3SAS_ADAPTER *ioc,
471 struct _sas_port *mpt3sas_port)
472 {
473 u64 sas_address = mpt3sas_port->remote_identify.sas_address;
474 enum sas_device_type device_type =
475 mpt3sas_port->remote_identify.device_type;
476
477 dev_printk(KERN_INFO, &mpt3sas_port->port->dev,
478 "remove: sas_addr(0x%016llx)\n",
479 (unsigned long long) sas_address);
480
481 ioc->logging_level |= MPT_DEBUG_TRANSPORT;
482 if (device_type == SAS_END_DEVICE)
483 mpt3sas_device_remove_by_sas_address(ioc, sas_address);
484 else if (device_type == SAS_EDGE_EXPANDER_DEVICE ||
485 device_type == SAS_FANOUT_EXPANDER_DEVICE)
486 mpt3sas_expander_remove(ioc, sas_address);
487 ioc->logging_level &= ~MPT_DEBUG_TRANSPORT;
488 }
489
490 /**
491 * _transport_delete_phy - helper function to removing single phy from port
492 * @ioc: per adapter object
493 * @mpt3sas_port: mpt3sas per port object
494 * @mpt3sas_phy: mpt3sas per phy object
495 *
496 * Returns nothing.
497 */
498 static void
499 _transport_delete_phy(struct MPT3SAS_ADAPTER *ioc,
500 struct _sas_port *mpt3sas_port, struct _sas_phy *mpt3sas_phy)
501 {
502 u64 sas_address = mpt3sas_port->remote_identify.sas_address;
503
504 dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
505 "remove: sas_addr(0x%016llx), phy(%d)\n",
506 (unsigned long long) sas_address, mpt3sas_phy->phy_id);
507
508 list_del(&mpt3sas_phy->port_siblings);
509 mpt3sas_port->num_phys--;
510 sas_port_delete_phy(mpt3sas_port->port, mpt3sas_phy->phy);
511 mpt3sas_phy->phy_belongs_to_port = 0;
512 }
513
514 /**
515 * _transport_add_phy - helper function to adding single phy to port
516 * @ioc: per adapter object
517 * @mpt3sas_port: mpt3sas per port object
518 * @mpt3sas_phy: mpt3sas per phy object
519 *
520 * Returns nothing.
521 */
522 static void
523 _transport_add_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_port *mpt3sas_port,
524 struct _sas_phy *mpt3sas_phy)
525 {
526 u64 sas_address = mpt3sas_port->remote_identify.sas_address;
527
528 dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
529 "add: sas_addr(0x%016llx), phy(%d)\n", (unsigned long long)
530 sas_address, mpt3sas_phy->phy_id);
531
532 list_add_tail(&mpt3sas_phy->port_siblings, &mpt3sas_port->phy_list);
533 mpt3sas_port->num_phys++;
534 sas_port_add_phy(mpt3sas_port->port, mpt3sas_phy->phy);
535 mpt3sas_phy->phy_belongs_to_port = 1;
536 }
537
538 /**
539 * _transport_add_phy_to_an_existing_port - adding new phy to existing port
540 * @ioc: per adapter object
541 * @sas_node: sas node object (either expander or sas host)
542 * @mpt3sas_phy: mpt3sas per phy object
543 * @sas_address: sas address of device/expander were phy needs to be added to
544 *
545 * Returns nothing.
546 */
547 static void
548 _transport_add_phy_to_an_existing_port(struct MPT3SAS_ADAPTER *ioc,
549 struct _sas_node *sas_node, struct _sas_phy *mpt3sas_phy,
550 u64 sas_address)
551 {
552 struct _sas_port *mpt3sas_port;
553 struct _sas_phy *phy_srch;
554
555 if (mpt3sas_phy->phy_belongs_to_port == 1)
556 return;
557
558 list_for_each_entry(mpt3sas_port, &sas_node->sas_port_list,
559 port_list) {
560 if (mpt3sas_port->remote_identify.sas_address !=
561 sas_address)
562 continue;
563 list_for_each_entry(phy_srch, &mpt3sas_port->phy_list,
564 port_siblings) {
565 if (phy_srch == mpt3sas_phy)
566 return;
567 }
568 _transport_add_phy(ioc, mpt3sas_port, mpt3sas_phy);
569 return;
570 }
571
572 }
573
574 /**
575 * _transport_del_phy_from_an_existing_port - delete phy from existing port
576 * @ioc: per adapter object
577 * @sas_node: sas node object (either expander or sas host)
578 * @mpt3sas_phy: mpt3sas per phy object
579 *
580 * Returns nothing.
581 */
582 static void
583 _transport_del_phy_from_an_existing_port(struct MPT3SAS_ADAPTER *ioc,
584 struct _sas_node *sas_node, struct _sas_phy *mpt3sas_phy)
585 {
586 struct _sas_port *mpt3sas_port, *next;
587 struct _sas_phy *phy_srch;
588
589 if (mpt3sas_phy->phy_belongs_to_port == 0)
590 return;
591
592 list_for_each_entry_safe(mpt3sas_port, next, &sas_node->sas_port_list,
593 port_list) {
594 list_for_each_entry(phy_srch, &mpt3sas_port->phy_list,
595 port_siblings) {
596 if (phy_srch != mpt3sas_phy)
597 continue;
598
599 if (mpt3sas_port->num_phys == 1)
600 _transport_delete_port(ioc, mpt3sas_port);
601 else
602 _transport_delete_phy(ioc, mpt3sas_port,
603 mpt3sas_phy);
604 return;
605 }
606 }
607 }
608
609 /**
610 * _transport_sanity_check - sanity check when adding a new port
611 * @ioc: per adapter object
612 * @sas_node: sas node object (either expander or sas host)
613 * @sas_address: sas address of device being added
614 *
615 * See the explanation above from _transport_delete_duplicate_port
616 */
617 static void
618 _transport_sanity_check(struct MPT3SAS_ADAPTER *ioc, struct _sas_node *sas_node,
619 u64 sas_address)
620 {
621 int i;
622
623 for (i = 0; i < sas_node->num_phys; i++) {
624 if (sas_node->phy[i].remote_identify.sas_address != sas_address)
625 continue;
626 if (sas_node->phy[i].phy_belongs_to_port == 1)
627 _transport_del_phy_from_an_existing_port(ioc, sas_node,
628 &sas_node->phy[i]);
629 }
630 }
631
632 /**
633 * mpt3sas_transport_port_add - insert port to the list
634 * @ioc: per adapter object
635 * @handle: handle of attached device
636 * @sas_address: sas address of parent expander or sas host
637 * Context: This function will acquire ioc->sas_node_lock.
638 *
639 * Adding new port object to the sas_node->sas_port_list.
640 *
641 * Returns mpt3sas_port.
642 */
643 struct _sas_port *
644 mpt3sas_transport_port_add(struct MPT3SAS_ADAPTER *ioc, u16 handle,
645 u64 sas_address)
646 {
647 struct _sas_phy *mpt3sas_phy, *next;
648 struct _sas_port *mpt3sas_port;
649 unsigned long flags;
650 struct _sas_node *sas_node;
651 struct sas_rphy *rphy;
652 struct _sas_device *sas_device = NULL;
653 int i;
654 struct sas_port *port;
655
656 mpt3sas_port = kzalloc(sizeof(struct _sas_port),
657 GFP_KERNEL);
658 if (!mpt3sas_port) {
659 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
660 ioc->name, __FILE__, __LINE__, __func__);
661 return NULL;
662 }
663
664 INIT_LIST_HEAD(&mpt3sas_port->port_list);
665 INIT_LIST_HEAD(&mpt3sas_port->phy_list);
666 spin_lock_irqsave(&ioc->sas_node_lock, flags);
667 sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
668 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
669
670 if (!sas_node) {
671 pr_err(MPT3SAS_FMT
672 "%s: Could not find parent sas_address(0x%016llx)!\n",
673 ioc->name, __func__, (unsigned long long)sas_address);
674 goto out_fail;
675 }
676
677 if ((_transport_set_identify(ioc, handle,
678 &mpt3sas_port->remote_identify))) {
679 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
680 ioc->name, __FILE__, __LINE__, __func__);
681 goto out_fail;
682 }
683
684 if (mpt3sas_port->remote_identify.device_type == SAS_PHY_UNUSED) {
685 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
686 ioc->name, __FILE__, __LINE__, __func__);
687 goto out_fail;
688 }
689
690 _transport_sanity_check(ioc, sas_node,
691 mpt3sas_port->remote_identify.sas_address);
692
693 for (i = 0; i < sas_node->num_phys; i++) {
694 if (sas_node->phy[i].remote_identify.sas_address !=
695 mpt3sas_port->remote_identify.sas_address)
696 continue;
697 list_add_tail(&sas_node->phy[i].port_siblings,
698 &mpt3sas_port->phy_list);
699 mpt3sas_port->num_phys++;
700 }
701
702 if (!mpt3sas_port->num_phys) {
703 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
704 ioc->name, __FILE__, __LINE__, __func__);
705 goto out_fail;
706 }
707
708 if (!sas_node->parent_dev) {
709 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
710 ioc->name, __FILE__, __LINE__, __func__);
711 goto out_fail;
712 }
713 port = sas_port_alloc_num(sas_node->parent_dev);
714 if ((sas_port_add(port))) {
715 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
716 ioc->name, __FILE__, __LINE__, __func__);
717 goto out_fail;
718 }
719
720 list_for_each_entry(mpt3sas_phy, &mpt3sas_port->phy_list,
721 port_siblings) {
722 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
723 dev_printk(KERN_INFO, &port->dev,
724 "add: handle(0x%04x), sas_addr(0x%016llx), phy(%d)\n",
725 handle, (unsigned long long)
726 mpt3sas_port->remote_identify.sas_address,
727 mpt3sas_phy->phy_id);
728 sas_port_add_phy(port, mpt3sas_phy->phy);
729 mpt3sas_phy->phy_belongs_to_port = 1;
730 }
731
732 mpt3sas_port->port = port;
733 if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE)
734 rphy = sas_end_device_alloc(port);
735 else
736 rphy = sas_expander_alloc(port,
737 mpt3sas_port->remote_identify.device_type);
738
739 rphy->identify = mpt3sas_port->remote_identify;
740
741 if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) {
742 sas_device = mpt3sas_get_sdev_by_addr(ioc,
743 mpt3sas_port->remote_identify.sas_address);
744 if (!sas_device) {
745 dfailprintk(ioc, printk(MPT3SAS_FMT
746 "failure at %s:%d/%s()!\n",
747 ioc->name, __FILE__, __LINE__, __func__));
748 goto out_fail;
749 }
750 sas_device->pend_sas_rphy_add = 1;
751 }
752
753 if ((sas_rphy_add(rphy))) {
754 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
755 ioc->name, __FILE__, __LINE__, __func__);
756 }
757
758 if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) {
759 sas_device->pend_sas_rphy_add = 0;
760 sas_device_put(sas_device);
761 }
762
763 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
764 dev_printk(KERN_INFO, &rphy->dev,
765 "add: handle(0x%04x), sas_addr(0x%016llx)\n",
766 handle, (unsigned long long)
767 mpt3sas_port->remote_identify.sas_address);
768 mpt3sas_port->rphy = rphy;
769 spin_lock_irqsave(&ioc->sas_node_lock, flags);
770 list_add_tail(&mpt3sas_port->port_list, &sas_node->sas_port_list);
771 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
772
773 /* fill in report manufacture */
774 if (mpt3sas_port->remote_identify.device_type ==
775 MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
776 mpt3sas_port->remote_identify.device_type ==
777 MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
778 _transport_expander_report_manufacture(ioc,
779 mpt3sas_port->remote_identify.sas_address,
780 rphy_to_expander_device(rphy));
781 return mpt3sas_port;
782
783 out_fail:
784 list_for_each_entry_safe(mpt3sas_phy, next, &mpt3sas_port->phy_list,
785 port_siblings)
786 list_del(&mpt3sas_phy->port_siblings);
787 kfree(mpt3sas_port);
788 return NULL;
789 }
790
791 /**
792 * mpt3sas_transport_port_remove - remove port from the list
793 * @ioc: per adapter object
794 * @sas_address: sas address of attached device
795 * @sas_address_parent: sas address of parent expander or sas host
796 * Context: This function will acquire ioc->sas_node_lock.
797 *
798 * Removing object and freeing associated memory from the
799 * ioc->sas_port_list.
800 *
801 * Return nothing.
802 */
803 void
804 mpt3sas_transport_port_remove(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
805 u64 sas_address_parent)
806 {
807 int i;
808 unsigned long flags;
809 struct _sas_port *mpt3sas_port, *next;
810 struct _sas_node *sas_node;
811 u8 found = 0;
812 struct _sas_phy *mpt3sas_phy, *next_phy;
813
814 spin_lock_irqsave(&ioc->sas_node_lock, flags);
815 sas_node = _transport_sas_node_find_by_sas_address(ioc,
816 sas_address_parent);
817 if (!sas_node) {
818 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
819 return;
820 }
821 list_for_each_entry_safe(mpt3sas_port, next, &sas_node->sas_port_list,
822 port_list) {
823 if (mpt3sas_port->remote_identify.sas_address != sas_address)
824 continue;
825 found = 1;
826 list_del(&mpt3sas_port->port_list);
827 goto out;
828 }
829 out:
830 if (!found) {
831 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
832 return;
833 }
834
835 for (i = 0; i < sas_node->num_phys; i++) {
836 if (sas_node->phy[i].remote_identify.sas_address == sas_address)
837 memset(&sas_node->phy[i].remote_identify, 0 ,
838 sizeof(struct sas_identify));
839 }
840
841 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
842
843 list_for_each_entry_safe(mpt3sas_phy, next_phy,
844 &mpt3sas_port->phy_list, port_siblings) {
845 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
846 dev_printk(KERN_INFO, &mpt3sas_port->port->dev,
847 "remove: sas_addr(0x%016llx), phy(%d)\n",
848 (unsigned long long)
849 mpt3sas_port->remote_identify.sas_address,
850 mpt3sas_phy->phy_id);
851 mpt3sas_phy->phy_belongs_to_port = 0;
852 sas_port_delete_phy(mpt3sas_port->port, mpt3sas_phy->phy);
853 list_del(&mpt3sas_phy->port_siblings);
854 }
855 sas_port_delete(mpt3sas_port->port);
856 kfree(mpt3sas_port);
857 }
858
859 /**
860 * mpt3sas_transport_add_host_phy - report sas_host phy to transport
861 * @ioc: per adapter object
862 * @mpt3sas_phy: mpt3sas per phy object
863 * @phy_pg0: sas phy page 0
864 * @parent_dev: parent device class object
865 *
866 * Returns 0 for success, non-zero for failure.
867 */
868 int
869 mpt3sas_transport_add_host_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
870 *mpt3sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
871 {
872 struct sas_phy *phy;
873 int phy_index = mpt3sas_phy->phy_id;
874
875
876 INIT_LIST_HEAD(&mpt3sas_phy->port_siblings);
877 phy = sas_phy_alloc(parent_dev, phy_index);
878 if (!phy) {
879 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
880 ioc->name, __FILE__, __LINE__, __func__);
881 return -1;
882 }
883 if ((_transport_set_identify(ioc, mpt3sas_phy->handle,
884 &mpt3sas_phy->identify))) {
885 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
886 ioc->name, __FILE__, __LINE__, __func__);
887 sas_phy_free(phy);
888 return -1;
889 }
890 phy->identify = mpt3sas_phy->identify;
891 mpt3sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
892 if (mpt3sas_phy->attached_handle)
893 _transport_set_identify(ioc, mpt3sas_phy->attached_handle,
894 &mpt3sas_phy->remote_identify);
895 phy->identify.phy_identifier = mpt3sas_phy->phy_id;
896 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
897 phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
898 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
899 phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
900 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
901 phy_pg0.HwLinkRate >> 4);
902 phy->minimum_linkrate = _transport_convert_phy_link_rate(
903 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
904 phy->maximum_linkrate = _transport_convert_phy_link_rate(
905 phy_pg0.ProgrammedLinkRate >> 4);
906
907 if ((sas_phy_add(phy))) {
908 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
909 ioc->name, __FILE__, __LINE__, __func__);
910 sas_phy_free(phy);
911 return -1;
912 }
913 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
914 dev_printk(KERN_INFO, &phy->dev,
915 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
916 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
917 mpt3sas_phy->handle, (unsigned long long)
918 mpt3sas_phy->identify.sas_address,
919 mpt3sas_phy->attached_handle,
920 (unsigned long long)
921 mpt3sas_phy->remote_identify.sas_address);
922 mpt3sas_phy->phy = phy;
923 return 0;
924 }
925
926
927 /**
928 * mpt3sas_transport_add_expander_phy - report expander phy to transport
929 * @ioc: per adapter object
930 * @mpt3sas_phy: mpt3sas per phy object
931 * @expander_pg1: expander page 1
932 * @parent_dev: parent device class object
933 *
934 * Returns 0 for success, non-zero for failure.
935 */
936 int
937 mpt3sas_transport_add_expander_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
938 *mpt3sas_phy, Mpi2ExpanderPage1_t expander_pg1,
939 struct device *parent_dev)
940 {
941 struct sas_phy *phy;
942 int phy_index = mpt3sas_phy->phy_id;
943
944 INIT_LIST_HEAD(&mpt3sas_phy->port_siblings);
945 phy = sas_phy_alloc(parent_dev, phy_index);
946 if (!phy) {
947 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
948 ioc->name, __FILE__, __LINE__, __func__);
949 return -1;
950 }
951 if ((_transport_set_identify(ioc, mpt3sas_phy->handle,
952 &mpt3sas_phy->identify))) {
953 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
954 ioc->name, __FILE__, __LINE__, __func__);
955 sas_phy_free(phy);
956 return -1;
957 }
958 phy->identify = mpt3sas_phy->identify;
959 mpt3sas_phy->attached_handle =
960 le16_to_cpu(expander_pg1.AttachedDevHandle);
961 if (mpt3sas_phy->attached_handle)
962 _transport_set_identify(ioc, mpt3sas_phy->attached_handle,
963 &mpt3sas_phy->remote_identify);
964 phy->identify.phy_identifier = mpt3sas_phy->phy_id;
965 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
966 expander_pg1.NegotiatedLinkRate &
967 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
968 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
969 expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
970 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
971 expander_pg1.HwLinkRate >> 4);
972 phy->minimum_linkrate = _transport_convert_phy_link_rate(
973 expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
974 phy->maximum_linkrate = _transport_convert_phy_link_rate(
975 expander_pg1.ProgrammedLinkRate >> 4);
976
977 if ((sas_phy_add(phy))) {
978 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
979 ioc->name, __FILE__, __LINE__, __func__);
980 sas_phy_free(phy);
981 return -1;
982 }
983 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
984 dev_printk(KERN_INFO, &phy->dev,
985 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
986 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
987 mpt3sas_phy->handle, (unsigned long long)
988 mpt3sas_phy->identify.sas_address,
989 mpt3sas_phy->attached_handle,
990 (unsigned long long)
991 mpt3sas_phy->remote_identify.sas_address);
992 mpt3sas_phy->phy = phy;
993 return 0;
994 }
995
996 /**
997 * mpt3sas_transport_update_links - refreshing phy link changes
998 * @ioc: per adapter object
999 * @sas_address: sas address of parent expander or sas host
1000 * @handle: attached device handle
1001 * @phy_numberv: phy number
1002 * @link_rate: new link rate
1003 *
1004 * Returns nothing.
1005 */
1006 void
1007 mpt3sas_transport_update_links(struct MPT3SAS_ADAPTER *ioc,
1008 u64 sas_address, u16 handle, u8 phy_number, u8 link_rate)
1009 {
1010 unsigned long flags;
1011 struct _sas_node *sas_node;
1012 struct _sas_phy *mpt3sas_phy;
1013
1014 if (ioc->shost_recovery || ioc->pci_error_recovery)
1015 return;
1016
1017 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1018 sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
1019 if (!sas_node) {
1020 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1021 return;
1022 }
1023
1024 mpt3sas_phy = &sas_node->phy[phy_number];
1025 mpt3sas_phy->attached_handle = handle;
1026 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1027 if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5)) {
1028 _transport_set_identify(ioc, handle,
1029 &mpt3sas_phy->remote_identify);
1030 _transport_add_phy_to_an_existing_port(ioc, sas_node,
1031 mpt3sas_phy, mpt3sas_phy->remote_identify.sas_address);
1032 } else
1033 memset(&mpt3sas_phy->remote_identify, 0 , sizeof(struct
1034 sas_identify));
1035
1036 if (mpt3sas_phy->phy)
1037 mpt3sas_phy->phy->negotiated_linkrate =
1038 _transport_convert_phy_link_rate(link_rate);
1039
1040 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1041 dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
1042 "refresh: parent sas_addr(0x%016llx),\n"
1043 "\tlink_rate(0x%02x), phy(%d)\n"
1044 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1045 (unsigned long long)sas_address,
1046 link_rate, phy_number, handle, (unsigned long long)
1047 mpt3sas_phy->remote_identify.sas_address);
1048 }
1049
1050 static inline void *
1051 phy_to_ioc(struct sas_phy *phy)
1052 {
1053 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1054 return shost_priv(shost);
1055 }
1056
1057 static inline void *
1058 rphy_to_ioc(struct sas_rphy *rphy)
1059 {
1060 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1061 return shost_priv(shost);
1062 }
1063
1064 /* report phy error log structure */
1065 struct phy_error_log_request {
1066 u8 smp_frame_type; /* 0x40 */
1067 u8 function; /* 0x11 */
1068 u8 allocated_response_length;
1069 u8 request_length; /* 02 */
1070 u8 reserved_1[5];
1071 u8 phy_identifier;
1072 u8 reserved_2[2];
1073 };
1074
1075 /* report phy error log reply structure */
1076 struct phy_error_log_reply {
1077 u8 smp_frame_type; /* 0x41 */
1078 u8 function; /* 0x11 */
1079 u8 function_result;
1080 u8 response_length;
1081 __be16 expander_change_count;
1082 u8 reserved_1[3];
1083 u8 phy_identifier;
1084 u8 reserved_2[2];
1085 __be32 invalid_dword;
1086 __be32 running_disparity_error;
1087 __be32 loss_of_dword_sync;
1088 __be32 phy_reset_problem;
1089 };
1090
1091 /**
1092 * _transport_get_expander_phy_error_log - return expander counters
1093 * @ioc: per adapter object
1094 * @phy: The sas phy object
1095 *
1096 * Returns 0 for success, non-zero for failure.
1097 *
1098 */
1099 static int
1100 _transport_get_expander_phy_error_log(struct MPT3SAS_ADAPTER *ioc,
1101 struct sas_phy *phy)
1102 {
1103 Mpi2SmpPassthroughRequest_t *mpi_request;
1104 Mpi2SmpPassthroughReply_t *mpi_reply;
1105 struct phy_error_log_request *phy_error_log_request;
1106 struct phy_error_log_reply *phy_error_log_reply;
1107 int rc;
1108 u16 smid;
1109 u32 ioc_state;
1110 unsigned long timeleft;
1111 void *psge;
1112 u8 issue_reset = 0;
1113 void *data_out = NULL;
1114 dma_addr_t data_out_dma;
1115 u32 sz;
1116 u16 wait_state_count;
1117
1118 if (ioc->shost_recovery || ioc->pci_error_recovery) {
1119 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
1120 __func__, ioc->name);
1121 return -EFAULT;
1122 }
1123
1124 mutex_lock(&ioc->transport_cmds.mutex);
1125
1126 if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1127 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n",
1128 ioc->name, __func__);
1129 rc = -EAGAIN;
1130 goto out;
1131 }
1132 ioc->transport_cmds.status = MPT3_CMD_PENDING;
1133
1134 wait_state_count = 0;
1135 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1136 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1137 if (wait_state_count++ == 10) {
1138 pr_err(MPT3SAS_FMT
1139 "%s: failed due to ioc not operational\n",
1140 ioc->name, __func__);
1141 rc = -EFAULT;
1142 goto out;
1143 }
1144 ssleep(1);
1145 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1146 pr_info(MPT3SAS_FMT
1147 "%s: waiting for operational state(count=%d)\n",
1148 ioc->name, __func__, wait_state_count);
1149 }
1150 if (wait_state_count)
1151 pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
1152 ioc->name, __func__);
1153
1154 smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
1155 if (!smid) {
1156 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
1157 ioc->name, __func__);
1158 rc = -EAGAIN;
1159 goto out;
1160 }
1161
1162 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1163 ioc->transport_cmds.smid = smid;
1164
1165 sz = sizeof(struct phy_error_log_request) +
1166 sizeof(struct phy_error_log_reply);
1167 data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
1168 if (!data_out) {
1169 pr_err("failure at %s:%d/%s()!\n", __FILE__,
1170 __LINE__, __func__);
1171 rc = -ENOMEM;
1172 mpt3sas_base_free_smid(ioc, smid);
1173 goto out;
1174 }
1175
1176 rc = -EINVAL;
1177 memset(data_out, 0, sz);
1178 phy_error_log_request = data_out;
1179 phy_error_log_request->smp_frame_type = 0x40;
1180 phy_error_log_request->function = 0x11;
1181 phy_error_log_request->request_length = 2;
1182 phy_error_log_request->allocated_response_length = 0;
1183 phy_error_log_request->phy_identifier = phy->number;
1184
1185 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1186 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1187 mpi_request->PhysicalPort = 0xFF;
1188 mpi_request->VF_ID = 0; /* TODO */
1189 mpi_request->VP_ID = 0;
1190 mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1191 mpi_request->RequestDataLength =
1192 cpu_to_le16(sizeof(struct phy_error_log_request));
1193 psge = &mpi_request->SGL;
1194
1195 ioc->build_sg(ioc, psge, data_out_dma,
1196 sizeof(struct phy_error_log_request),
1197 data_out_dma + sizeof(struct phy_error_log_request),
1198 sizeof(struct phy_error_log_reply));
1199
1200 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1201 "phy_error_log - send to sas_addr(0x%016llx), phy(%d)\n",
1202 ioc->name, (unsigned long long)phy->identify.sas_address,
1203 phy->number));
1204 init_completion(&ioc->transport_cmds.done);
1205 mpt3sas_base_put_smid_default(ioc, smid);
1206 timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
1207 10*HZ);
1208
1209 if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
1210 pr_err(MPT3SAS_FMT "%s: timeout\n",
1211 ioc->name, __func__);
1212 _debug_dump_mf(mpi_request,
1213 sizeof(Mpi2SmpPassthroughRequest_t)/4);
1214 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
1215 issue_reset = 1;
1216 goto issue_host_reset;
1217 }
1218
1219 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1220 "phy_error_log - complete\n", ioc->name));
1221
1222 if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
1223
1224 mpi_reply = ioc->transport_cmds.reply;
1225
1226 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1227 "phy_error_log - reply data transfer size(%d)\n",
1228 ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
1229
1230 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1231 sizeof(struct phy_error_log_reply))
1232 goto out;
1233
1234 phy_error_log_reply = data_out +
1235 sizeof(struct phy_error_log_request);
1236
1237 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1238 "phy_error_log - function_result(%d)\n",
1239 ioc->name, phy_error_log_reply->function_result));
1240
1241 phy->invalid_dword_count =
1242 be32_to_cpu(phy_error_log_reply->invalid_dword);
1243 phy->running_disparity_error_count =
1244 be32_to_cpu(phy_error_log_reply->running_disparity_error);
1245 phy->loss_of_dword_sync_count =
1246 be32_to_cpu(phy_error_log_reply->loss_of_dword_sync);
1247 phy->phy_reset_problem_count =
1248 be32_to_cpu(phy_error_log_reply->phy_reset_problem);
1249 rc = 0;
1250 } else
1251 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1252 "phy_error_log - no reply\n", ioc->name));
1253
1254 issue_host_reset:
1255 if (issue_reset)
1256 mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1257 FORCE_BIG_HAMMER);
1258 out:
1259 ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
1260 if (data_out)
1261 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
1262
1263 mutex_unlock(&ioc->transport_cmds.mutex);
1264 return rc;
1265 }
1266
1267 /**
1268 * _transport_get_linkerrors - return phy counters for both hba and expanders
1269 * @phy: The sas phy object
1270 *
1271 * Returns 0 for success, non-zero for failure.
1272 *
1273 */
1274 static int
1275 _transport_get_linkerrors(struct sas_phy *phy)
1276 {
1277 struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1278 unsigned long flags;
1279 Mpi2ConfigReply_t mpi_reply;
1280 Mpi2SasPhyPage1_t phy_pg1;
1281
1282 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1283 if (_transport_sas_node_find_by_sas_address(ioc,
1284 phy->identify.sas_address) == NULL) {
1285 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1286 return -EINVAL;
1287 }
1288 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1289
1290 if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1291 return _transport_get_expander_phy_error_log(ioc, phy);
1292
1293 /* get hba phy error logs */
1294 if ((mpt3sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
1295 phy->number))) {
1296 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1297 ioc->name, __FILE__, __LINE__, __func__);
1298 return -ENXIO;
1299 }
1300
1301 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1302 pr_info(MPT3SAS_FMT
1303 "phy(%d), ioc_status (0x%04x), loginfo(0x%08x)\n",
1304 ioc->name, phy->number,
1305 le16_to_cpu(mpi_reply.IOCStatus),
1306 le32_to_cpu(mpi_reply.IOCLogInfo));
1307
1308 phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
1309 phy->running_disparity_error_count =
1310 le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
1311 phy->loss_of_dword_sync_count =
1312 le32_to_cpu(phy_pg1.LossDwordSynchCount);
1313 phy->phy_reset_problem_count =
1314 le32_to_cpu(phy_pg1.PhyResetProblemCount);
1315 return 0;
1316 }
1317
1318 /**
1319 * _transport_get_enclosure_identifier -
1320 * @phy: The sas phy object
1321 *
1322 * Obtain the enclosure logical id for an expander.
1323 * Returns 0 for success, non-zero for failure.
1324 */
1325 static int
1326 _transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
1327 {
1328 struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1329 struct _sas_device *sas_device;
1330 unsigned long flags;
1331 int rc;
1332
1333 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1334 sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1335 rphy->identify.sas_address);
1336 if (sas_device) {
1337 *identifier = sas_device->enclosure_logical_id;
1338 rc = 0;
1339 sas_device_put(sas_device);
1340 } else {
1341 *identifier = 0;
1342 rc = -ENXIO;
1343 }
1344
1345 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1346 return rc;
1347 }
1348
1349 /**
1350 * _transport_get_bay_identifier -
1351 * @phy: The sas phy object
1352 *
1353 * Returns the slot id for a device that resides inside an enclosure.
1354 */
1355 static int
1356 _transport_get_bay_identifier(struct sas_rphy *rphy)
1357 {
1358 struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1359 struct _sas_device *sas_device;
1360 unsigned long flags;
1361 int rc;
1362
1363 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1364 sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1365 rphy->identify.sas_address);
1366 if (sas_device) {
1367 rc = sas_device->slot;
1368 sas_device_put(sas_device);
1369 } else {
1370 rc = -ENXIO;
1371 }
1372 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1373 return rc;
1374 }
1375
1376 /* phy control request structure */
1377 struct phy_control_request {
1378 u8 smp_frame_type; /* 0x40 */
1379 u8 function; /* 0x91 */
1380 u8 allocated_response_length;
1381 u8 request_length; /* 0x09 */
1382 u16 expander_change_count;
1383 u8 reserved_1[3];
1384 u8 phy_identifier;
1385 u8 phy_operation;
1386 u8 reserved_2[13];
1387 u64 attached_device_name;
1388 u8 programmed_min_physical_link_rate;
1389 u8 programmed_max_physical_link_rate;
1390 u8 reserved_3[6];
1391 };
1392
1393 /* phy control reply structure */
1394 struct phy_control_reply {
1395 u8 smp_frame_type; /* 0x41 */
1396 u8 function; /* 0x11 */
1397 u8 function_result;
1398 u8 response_length;
1399 };
1400
1401 #define SMP_PHY_CONTROL_LINK_RESET (0x01)
1402 #define SMP_PHY_CONTROL_HARD_RESET (0x02)
1403 #define SMP_PHY_CONTROL_DISABLE (0x03)
1404
1405 /**
1406 * _transport_expander_phy_control - expander phy control
1407 * @ioc: per adapter object
1408 * @phy: The sas phy object
1409 *
1410 * Returns 0 for success, non-zero for failure.
1411 *
1412 */
1413 static int
1414 _transport_expander_phy_control(struct MPT3SAS_ADAPTER *ioc,
1415 struct sas_phy *phy, u8 phy_operation)
1416 {
1417 Mpi2SmpPassthroughRequest_t *mpi_request;
1418 Mpi2SmpPassthroughReply_t *mpi_reply;
1419 struct phy_control_request *phy_control_request;
1420 struct phy_control_reply *phy_control_reply;
1421 int rc;
1422 u16 smid;
1423 u32 ioc_state;
1424 unsigned long timeleft;
1425 void *psge;
1426 u8 issue_reset = 0;
1427 void *data_out = NULL;
1428 dma_addr_t data_out_dma;
1429 u32 sz;
1430 u16 wait_state_count;
1431
1432 if (ioc->shost_recovery || ioc->pci_error_recovery) {
1433 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
1434 __func__, ioc->name);
1435 return -EFAULT;
1436 }
1437
1438 mutex_lock(&ioc->transport_cmds.mutex);
1439
1440 if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1441 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n",
1442 ioc->name, __func__);
1443 rc = -EAGAIN;
1444 goto out;
1445 }
1446 ioc->transport_cmds.status = MPT3_CMD_PENDING;
1447
1448 wait_state_count = 0;
1449 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1450 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1451 if (wait_state_count++ == 10) {
1452 pr_err(MPT3SAS_FMT
1453 "%s: failed due to ioc not operational\n",
1454 ioc->name, __func__);
1455 rc = -EFAULT;
1456 goto out;
1457 }
1458 ssleep(1);
1459 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1460 pr_info(MPT3SAS_FMT
1461 "%s: waiting for operational state(count=%d)\n",
1462 ioc->name, __func__, wait_state_count);
1463 }
1464 if (wait_state_count)
1465 pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
1466 ioc->name, __func__);
1467
1468 smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
1469 if (!smid) {
1470 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
1471 ioc->name, __func__);
1472 rc = -EAGAIN;
1473 goto out;
1474 }
1475
1476 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1477 ioc->transport_cmds.smid = smid;
1478
1479 sz = sizeof(struct phy_control_request) +
1480 sizeof(struct phy_control_reply);
1481 data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
1482 if (!data_out) {
1483 pr_err("failure at %s:%d/%s()!\n", __FILE__,
1484 __LINE__, __func__);
1485 rc = -ENOMEM;
1486 mpt3sas_base_free_smid(ioc, smid);
1487 goto out;
1488 }
1489
1490 rc = -EINVAL;
1491 memset(data_out, 0, sz);
1492 phy_control_request = data_out;
1493 phy_control_request->smp_frame_type = 0x40;
1494 phy_control_request->function = 0x91;
1495 phy_control_request->request_length = 9;
1496 phy_control_request->allocated_response_length = 0;
1497 phy_control_request->phy_identifier = phy->number;
1498 phy_control_request->phy_operation = phy_operation;
1499 phy_control_request->programmed_min_physical_link_rate =
1500 phy->minimum_linkrate << 4;
1501 phy_control_request->programmed_max_physical_link_rate =
1502 phy->maximum_linkrate << 4;
1503
1504 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1505 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1506 mpi_request->PhysicalPort = 0xFF;
1507 mpi_request->VF_ID = 0; /* TODO */
1508 mpi_request->VP_ID = 0;
1509 mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1510 mpi_request->RequestDataLength =
1511 cpu_to_le16(sizeof(struct phy_error_log_request));
1512 psge = &mpi_request->SGL;
1513
1514 ioc->build_sg(ioc, psge, data_out_dma,
1515 sizeof(struct phy_control_request),
1516 data_out_dma + sizeof(struct phy_control_request),
1517 sizeof(struct phy_control_reply));
1518
1519 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1520 "phy_control - send to sas_addr(0x%016llx), phy(%d), opcode(%d)\n",
1521 ioc->name, (unsigned long long)phy->identify.sas_address,
1522 phy->number, phy_operation));
1523 init_completion(&ioc->transport_cmds.done);
1524 mpt3sas_base_put_smid_default(ioc, smid);
1525 timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
1526 10*HZ);
1527
1528 if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
1529 pr_err(MPT3SAS_FMT "%s: timeout\n",
1530 ioc->name, __func__);
1531 _debug_dump_mf(mpi_request,
1532 sizeof(Mpi2SmpPassthroughRequest_t)/4);
1533 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
1534 issue_reset = 1;
1535 goto issue_host_reset;
1536 }
1537
1538 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1539 "phy_control - complete\n", ioc->name));
1540
1541 if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
1542
1543 mpi_reply = ioc->transport_cmds.reply;
1544
1545 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1546 "phy_control - reply data transfer size(%d)\n",
1547 ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
1548
1549 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1550 sizeof(struct phy_control_reply))
1551 goto out;
1552
1553 phy_control_reply = data_out +
1554 sizeof(struct phy_control_request);
1555
1556 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1557 "phy_control - function_result(%d)\n",
1558 ioc->name, phy_control_reply->function_result));
1559
1560 rc = 0;
1561 } else
1562 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1563 "phy_control - no reply\n", ioc->name));
1564
1565 issue_host_reset:
1566 if (issue_reset)
1567 mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1568 FORCE_BIG_HAMMER);
1569 out:
1570 ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
1571 if (data_out)
1572 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
1573
1574 mutex_unlock(&ioc->transport_cmds.mutex);
1575 return rc;
1576 }
1577
1578 /**
1579 * _transport_phy_reset -
1580 * @phy: The sas phy object
1581 * @hard_reset:
1582 *
1583 * Returns 0 for success, non-zero for failure.
1584 */
1585 static int
1586 _transport_phy_reset(struct sas_phy *phy, int hard_reset)
1587 {
1588 struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1589 Mpi2SasIoUnitControlReply_t mpi_reply;
1590 Mpi2SasIoUnitControlRequest_t mpi_request;
1591 unsigned long flags;
1592
1593 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1594 if (_transport_sas_node_find_by_sas_address(ioc,
1595 phy->identify.sas_address) == NULL) {
1596 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1597 return -EINVAL;
1598 }
1599 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1600
1601 /* handle expander phys */
1602 if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1603 return _transport_expander_phy_control(ioc, phy,
1604 (hard_reset == 1) ? SMP_PHY_CONTROL_HARD_RESET :
1605 SMP_PHY_CONTROL_LINK_RESET);
1606
1607 /* handle hba phys */
1608 memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
1609 mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
1610 mpi_request.Operation = hard_reset ?
1611 MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
1612 mpi_request.PhyNum = phy->number;
1613
1614 if ((mpt3sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
1615 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1616 ioc->name, __FILE__, __LINE__, __func__);
1617 return -ENXIO;
1618 }
1619
1620 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1621 pr_info(MPT3SAS_FMT
1622 "phy(%d), ioc_status(0x%04x), loginfo(0x%08x)\n",
1623 ioc->name, phy->number, le16_to_cpu(mpi_reply.IOCStatus),
1624 le32_to_cpu(mpi_reply.IOCLogInfo));
1625
1626 return 0;
1627 }
1628
1629 /**
1630 * _transport_phy_enable - enable/disable phys
1631 * @phy: The sas phy object
1632 * @enable: enable phy when true
1633 *
1634 * Only support sas_host direct attached phys.
1635 * Returns 0 for success, non-zero for failure.
1636 */
1637 static int
1638 _transport_phy_enable(struct sas_phy *phy, int enable)
1639 {
1640 struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1641 Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1642 Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
1643 Mpi2ConfigReply_t mpi_reply;
1644 u16 ioc_status;
1645 u16 sz;
1646 int rc = 0;
1647 unsigned long flags;
1648 int i, discovery_active;
1649
1650 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1651 if (_transport_sas_node_find_by_sas_address(ioc,
1652 phy->identify.sas_address) == NULL) {
1653 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1654 return -EINVAL;
1655 }
1656 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1657
1658 /* handle expander phys */
1659 if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1660 return _transport_expander_phy_control(ioc, phy,
1661 (enable == 1) ? SMP_PHY_CONTROL_LINK_RESET :
1662 SMP_PHY_CONTROL_DISABLE);
1663
1664 /* handle hba phys */
1665
1666 /* read sas_iounit page 0 */
1667 sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys *
1668 sizeof(Mpi2SasIOUnit0PhyData_t));
1669 sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
1670 if (!sas_iounit_pg0) {
1671 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1672 ioc->name, __FILE__, __LINE__, __func__);
1673 rc = -ENOMEM;
1674 goto out;
1675 }
1676 if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
1677 sas_iounit_pg0, sz))) {
1678 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1679 ioc->name, __FILE__, __LINE__, __func__);
1680 rc = -ENXIO;
1681 goto out;
1682 }
1683 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1684 MPI2_IOCSTATUS_MASK;
1685 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1686 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1687 ioc->name, __FILE__, __LINE__, __func__);
1688 rc = -EIO;
1689 goto out;
1690 }
1691
1692 /* unable to enable/disable phys when when discovery is active */
1693 for (i = 0, discovery_active = 0; i < ioc->sas_hba.num_phys ; i++) {
1694 if (sas_iounit_pg0->PhyData[i].PortFlags &
1695 MPI2_SASIOUNIT0_PORTFLAGS_DISCOVERY_IN_PROGRESS) {
1696 pr_err(MPT3SAS_FMT "discovery is active on " \
1697 "port = %d, phy = %d: unable to enable/disable "
1698 "phys, try again later!\n", ioc->name,
1699 sas_iounit_pg0->PhyData[i].Port, i);
1700 discovery_active = 1;
1701 }
1702 }
1703
1704 if (discovery_active) {
1705 rc = -EAGAIN;
1706 goto out;
1707 }
1708
1709 /* read sas_iounit page 1 */
1710 sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1711 sizeof(Mpi2SasIOUnit1PhyData_t));
1712 sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1713 if (!sas_iounit_pg1) {
1714 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1715 ioc->name, __FILE__, __LINE__, __func__);
1716 rc = -ENOMEM;
1717 goto out;
1718 }
1719 if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1720 sas_iounit_pg1, sz))) {
1721 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1722 ioc->name, __FILE__, __LINE__, __func__);
1723 rc = -ENXIO;
1724 goto out;
1725 }
1726 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1727 MPI2_IOCSTATUS_MASK;
1728 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1729 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1730 ioc->name, __FILE__, __LINE__, __func__);
1731 rc = -EIO;
1732 goto out;
1733 }
1734
1735 /* copy Port/PortFlags/PhyFlags from page 0 */
1736 for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
1737 sas_iounit_pg1->PhyData[i].Port =
1738 sas_iounit_pg0->PhyData[i].Port;
1739 sas_iounit_pg1->PhyData[i].PortFlags =
1740 (sas_iounit_pg0->PhyData[i].PortFlags &
1741 MPI2_SASIOUNIT0_PORTFLAGS_AUTO_PORT_CONFIG);
1742 sas_iounit_pg1->PhyData[i].PhyFlags =
1743 (sas_iounit_pg0->PhyData[i].PhyFlags &
1744 (MPI2_SASIOUNIT0_PHYFLAGS_ZONING_ENABLED +
1745 MPI2_SASIOUNIT0_PHYFLAGS_PHY_DISABLED));
1746 }
1747
1748 if (enable)
1749 sas_iounit_pg1->PhyData[phy->number].PhyFlags
1750 &= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1751 else
1752 sas_iounit_pg1->PhyData[phy->number].PhyFlags
1753 |= MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1754
1755 mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, sz);
1756
1757 /* link reset */
1758 if (enable)
1759 _transport_phy_reset(phy, 0);
1760
1761 out:
1762 kfree(sas_iounit_pg1);
1763 kfree(sas_iounit_pg0);
1764 return rc;
1765 }
1766
1767 /**
1768 * _transport_phy_speed - set phy min/max link rates
1769 * @phy: The sas phy object
1770 * @rates: rates defined in sas_phy_linkrates
1771 *
1772 * Only support sas_host direct attached phys.
1773 * Returns 0 for success, non-zero for failure.
1774 */
1775 static int
1776 _transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
1777 {
1778 struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1779 Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1780 Mpi2SasPhyPage0_t phy_pg0;
1781 Mpi2ConfigReply_t mpi_reply;
1782 u16 ioc_status;
1783 u16 sz;
1784 int i;
1785 int rc = 0;
1786 unsigned long flags;
1787
1788 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1789 if (_transport_sas_node_find_by_sas_address(ioc,
1790 phy->identify.sas_address) == NULL) {
1791 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1792 return -EINVAL;
1793 }
1794 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1795
1796 if (!rates->minimum_linkrate)
1797 rates->minimum_linkrate = phy->minimum_linkrate;
1798 else if (rates->minimum_linkrate < phy->minimum_linkrate_hw)
1799 rates->minimum_linkrate = phy->minimum_linkrate_hw;
1800
1801 if (!rates->maximum_linkrate)
1802 rates->maximum_linkrate = phy->maximum_linkrate;
1803 else if (rates->maximum_linkrate > phy->maximum_linkrate_hw)
1804 rates->maximum_linkrate = phy->maximum_linkrate_hw;
1805
1806 /* handle expander phys */
1807 if (phy->identify.sas_address != ioc->sas_hba.sas_address) {
1808 phy->minimum_linkrate = rates->minimum_linkrate;
1809 phy->maximum_linkrate = rates->maximum_linkrate;
1810 return _transport_expander_phy_control(ioc, phy,
1811 SMP_PHY_CONTROL_LINK_RESET);
1812 }
1813
1814 /* handle hba phys */
1815
1816 /* sas_iounit page 1 */
1817 sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1818 sizeof(Mpi2SasIOUnit1PhyData_t));
1819 sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1820 if (!sas_iounit_pg1) {
1821 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1822 ioc->name, __FILE__, __LINE__, __func__);
1823 rc = -ENOMEM;
1824 goto out;
1825 }
1826 if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1827 sas_iounit_pg1, sz))) {
1828 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1829 ioc->name, __FILE__, __LINE__, __func__);
1830 rc = -ENXIO;
1831 goto out;
1832 }
1833 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1834 MPI2_IOCSTATUS_MASK;
1835 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1836 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1837 ioc->name, __FILE__, __LINE__, __func__);
1838 rc = -EIO;
1839 goto out;
1840 }
1841
1842 for (i = 0; i < ioc->sas_hba.num_phys; i++) {
1843 if (phy->number != i) {
1844 sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1845 (ioc->sas_hba.phy[i].phy->minimum_linkrate +
1846 (ioc->sas_hba.phy[i].phy->maximum_linkrate << 4));
1847 } else {
1848 sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1849 (rates->minimum_linkrate +
1850 (rates->maximum_linkrate << 4));
1851 }
1852 }
1853
1854 if (mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
1855 sz)) {
1856 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1857 ioc->name, __FILE__, __LINE__, __func__);
1858 rc = -ENXIO;
1859 goto out;
1860 }
1861
1862 /* link reset */
1863 _transport_phy_reset(phy, 0);
1864
1865 /* read phy page 0, then update the rates in the sas transport phy */
1866 if (!mpt3sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
1867 phy->number)) {
1868 phy->minimum_linkrate = _transport_convert_phy_link_rate(
1869 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1870 phy->maximum_linkrate = _transport_convert_phy_link_rate(
1871 phy_pg0.ProgrammedLinkRate >> 4);
1872 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1873 phy_pg0.NegotiatedLinkRate &
1874 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1875 }
1876
1877 out:
1878 kfree(sas_iounit_pg1);
1879 return rc;
1880 }
1881
1882 /**
1883 * _transport_smp_handler - transport portal for smp passthru
1884 * @shost: shost object
1885 * @rphy: sas transport rphy object
1886 * @req:
1887 *
1888 * This used primarily for smp_utils.
1889 * Example:
1890 * smp_rep_general /sys/class/bsg/expander-5:0
1891 */
1892 static int
1893 _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
1894 struct request *req)
1895 {
1896 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1897 Mpi2SmpPassthroughRequest_t *mpi_request;
1898 Mpi2SmpPassthroughReply_t *mpi_reply;
1899 int rc;
1900 u16 smid;
1901 u32 ioc_state;
1902 unsigned long timeleft;
1903 void *psge;
1904 u8 issue_reset = 0;
1905 dma_addr_t dma_addr_in = 0;
1906 dma_addr_t dma_addr_out = 0;
1907 dma_addr_t pci_dma_in = 0;
1908 dma_addr_t pci_dma_out = 0;
1909 void *pci_addr_in = NULL;
1910 void *pci_addr_out = NULL;
1911 u16 wait_state_count;
1912 struct request *rsp = req->next_rq;
1913 struct bio_vec bvec;
1914 struct bvec_iter iter;
1915
1916 if (!rsp) {
1917 pr_err(MPT3SAS_FMT "%s: the smp response space is missing\n",
1918 ioc->name, __func__);
1919 return -EINVAL;
1920 }
1921
1922 if (ioc->shost_recovery || ioc->pci_error_recovery) {
1923 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
1924 __func__, ioc->name);
1925 return -EFAULT;
1926 }
1927
1928 rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
1929 if (rc)
1930 return rc;
1931
1932 if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1933 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n", ioc->name,
1934 __func__);
1935 rc = -EAGAIN;
1936 goto out;
1937 }
1938 ioc->transport_cmds.status = MPT3_CMD_PENDING;
1939
1940 /* Check if the request is split across multiple segments */
1941 if (bio_multiple_segments(req->bio)) {
1942 u32 offset = 0;
1943
1944 /* Allocate memory and copy the request */
1945 pci_addr_out = pci_alloc_consistent(ioc->pdev,
1946 blk_rq_bytes(req), &pci_dma_out);
1947 if (!pci_addr_out) {
1948 pr_info(MPT3SAS_FMT "%s(): PCI Addr out = NULL\n",
1949 ioc->name, __func__);
1950 rc = -ENOMEM;
1951 goto out;
1952 }
1953
1954 bio_for_each_segment(bvec, req->bio, iter) {
1955 memcpy(pci_addr_out + offset,
1956 page_address(bvec.bv_page) + bvec.bv_offset,
1957 bvec.bv_len);
1958 offset += bvec.bv_len;
1959 }
1960 } else {
1961 dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio),
1962 blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL);
1963 if (pci_dma_mapping_error(ioc->pdev, dma_addr_out)) {
1964 pr_info(MPT3SAS_FMT "%s(): DMA Addr out = NULL\n",
1965 ioc->name, __func__);
1966 rc = -ENOMEM;
1967 goto free_pci;
1968 }
1969 }
1970
1971 /* Check if the response needs to be populated across
1972 * multiple segments */
1973 if (bio_multiple_segments(rsp->bio)) {
1974 pci_addr_in = pci_alloc_consistent(ioc->pdev, blk_rq_bytes(rsp),
1975 &pci_dma_in);
1976 if (!pci_addr_in) {
1977 pr_info(MPT3SAS_FMT "%s(): PCI Addr in = NULL\n",
1978 ioc->name, __func__);
1979 rc = -ENOMEM;
1980 goto unmap;
1981 }
1982 } else {
1983 dma_addr_in = pci_map_single(ioc->pdev, bio_data(rsp->bio),
1984 blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL);
1985 if (pci_dma_mapping_error(ioc->pdev, dma_addr_in)) {
1986 pr_info(MPT3SAS_FMT "%s(): DMA Addr in = NULL\n",
1987 ioc->name, __func__);
1988 rc = -ENOMEM;
1989 goto unmap;
1990 }
1991 }
1992
1993 wait_state_count = 0;
1994 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1995 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1996 if (wait_state_count++ == 10) {
1997 pr_err(MPT3SAS_FMT
1998 "%s: failed due to ioc not operational\n",
1999 ioc->name, __func__);
2000 rc = -EFAULT;
2001 goto unmap;
2002 }
2003 ssleep(1);
2004 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
2005 pr_info(MPT3SAS_FMT
2006 "%s: waiting for operational state(count=%d)\n",
2007 ioc->name, __func__, wait_state_count);
2008 }
2009 if (wait_state_count)
2010 pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
2011 ioc->name, __func__);
2012
2013 smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
2014 if (!smid) {
2015 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
2016 ioc->name, __func__);
2017 rc = -EAGAIN;
2018 goto unmap;
2019 }
2020
2021 rc = 0;
2022 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
2023 ioc->transport_cmds.smid = smid;
2024
2025 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
2026 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
2027 mpi_request->PhysicalPort = 0xFF;
2028 mpi_request->SASAddress = (rphy) ?
2029 cpu_to_le64(rphy->identify.sas_address) :
2030 cpu_to_le64(ioc->sas_hba.sas_address);
2031 mpi_request->RequestDataLength = cpu_to_le16(blk_rq_bytes(req) - 4);
2032 psge = &mpi_request->SGL;
2033
2034 if (bio_multiple_segments(req->bio))
2035 ioc->build_sg(ioc, psge, pci_dma_out, (blk_rq_bytes(req) - 4),
2036 pci_dma_in, (blk_rq_bytes(rsp) + 4));
2037 else
2038 ioc->build_sg(ioc, psge, dma_addr_out, (blk_rq_bytes(req) - 4),
2039 dma_addr_in, (blk_rq_bytes(rsp) + 4));
2040
2041 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
2042 "%s - sending smp request\n", ioc->name, __func__));
2043
2044 init_completion(&ioc->transport_cmds.done);
2045 mpt3sas_base_put_smid_default(ioc, smid);
2046 timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
2047 10*HZ);
2048
2049 if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
2050 pr_err(MPT3SAS_FMT "%s : timeout\n",
2051 __func__, ioc->name);
2052 _debug_dump_mf(mpi_request,
2053 sizeof(Mpi2SmpPassthroughRequest_t)/4);
2054 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
2055 issue_reset = 1;
2056 goto issue_host_reset;
2057 }
2058
2059 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
2060 "%s - complete\n", ioc->name, __func__));
2061
2062 if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
2063
2064 mpi_reply = ioc->transport_cmds.reply;
2065
2066 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
2067 "%s - reply data transfer size(%d)\n",
2068 ioc->name, __func__,
2069 le16_to_cpu(mpi_reply->ResponseDataLength)));
2070
2071 memcpy(req->sense, mpi_reply, sizeof(*mpi_reply));
2072 req->sense_len = sizeof(*mpi_reply);
2073 req->resid_len = 0;
2074 rsp->resid_len -=
2075 le16_to_cpu(mpi_reply->ResponseDataLength);
2076
2077 /* check if the resp needs to be copied from the allocated
2078 * pci mem */
2079 if (bio_multiple_segments(rsp->bio)) {
2080 u32 offset = 0;
2081 u32 bytes_to_copy =
2082 le16_to_cpu(mpi_reply->ResponseDataLength);
2083 bio_for_each_segment(bvec, rsp->bio, iter) {
2084 if (bytes_to_copy <= bvec.bv_len) {
2085 memcpy(page_address(bvec.bv_page) +
2086 bvec.bv_offset, pci_addr_in +
2087 offset, bytes_to_copy);
2088 break;
2089 } else {
2090 memcpy(page_address(bvec.bv_page) +
2091 bvec.bv_offset, pci_addr_in +
2092 offset, bvec.bv_len);
2093 bytes_to_copy -= bvec.bv_len;
2094 }
2095 offset += bvec.bv_len;
2096 }
2097 }
2098 } else {
2099 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
2100 "%s - no reply\n", ioc->name, __func__));
2101 rc = -ENXIO;
2102 }
2103
2104 issue_host_reset:
2105 if (issue_reset) {
2106 mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2107 FORCE_BIG_HAMMER);
2108 rc = -ETIMEDOUT;
2109 }
2110
2111 unmap:
2112 if (dma_addr_out)
2113 pci_unmap_single(ioc->pdev, dma_addr_out, blk_rq_bytes(req),
2114 PCI_DMA_BIDIRECTIONAL);
2115 if (dma_addr_in)
2116 pci_unmap_single(ioc->pdev, dma_addr_in, blk_rq_bytes(rsp),
2117 PCI_DMA_BIDIRECTIONAL);
2118
2119 free_pci:
2120 if (pci_addr_out)
2121 pci_free_consistent(ioc->pdev, blk_rq_bytes(req), pci_addr_out,
2122 pci_dma_out);
2123
2124 if (pci_addr_in)
2125 pci_free_consistent(ioc->pdev, blk_rq_bytes(rsp), pci_addr_in,
2126 pci_dma_in);
2127
2128 out:
2129 ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
2130 mutex_unlock(&ioc->transport_cmds.mutex);
2131 return rc;
2132 }
2133
2134 struct sas_function_template mpt3sas_transport_functions = {
2135 .get_linkerrors = _transport_get_linkerrors,
2136 .get_enclosure_identifier = _transport_get_enclosure_identifier,
2137 .get_bay_identifier = _transport_get_bay_identifier,
2138 .phy_reset = _transport_phy_reset,
2139 .phy_enable = _transport_phy_enable,
2140 .set_phy_speed = _transport_phy_speed,
2141 .smp_handler = _transport_smp_handler,
2142 };
2143
2144 struct scsi_transport_template *mpt3sas_transport_template;
Linux kernel - Deliverables
This page took 0.107647 seconds and 6 git commands to generate.