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vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console
[linux/fpc-iii.git] / drivers / scsi / mpt3sas / mpt3sas_transport.c
blob20d36061c217ce450bef794155d4d77da0f68d7d
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 * Return: 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 * Return: 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 void *psge;
304 u8 issue_reset = 0;
305 void *data_out = NULL;
306 dma_addr_t data_out_dma;
307 dma_addr_t data_in_dma;
308 size_t data_in_sz;
309 size_t data_out_sz;
310 u16 wait_state_count;
311
312 if (ioc->shost_recovery || ioc->pci_error_recovery) {
313 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
314 __func__, ioc->name);
315 return -EFAULT;
316 }
317
318 mutex_lock(&ioc->transport_cmds.mutex);
319
320 if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
321 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n",
322 ioc->name, __func__);
323 rc = -EAGAIN;
324 goto out;
325 }
326 ioc->transport_cmds.status = MPT3_CMD_PENDING;
327
328 wait_state_count = 0;
329 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
330 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
331 if (wait_state_count++ == 10) {
332 pr_err(MPT3SAS_FMT
333 "%s: failed due to ioc not operational\n",
334 ioc->name, __func__);
335 rc = -EFAULT;
336 goto out;
337 }
338 ssleep(1);
339 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
340 pr_info(MPT3SAS_FMT
341 "%s: waiting for operational state(count=%d)\n",
342 ioc->name, __func__, wait_state_count);
343 }
344 if (wait_state_count)
345 pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
346 ioc->name, __func__);
347
348 smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
349 if (!smid) {
350 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
351 ioc->name, __func__);
352 rc = -EAGAIN;
353 goto out;
354 }
355
356 rc = 0;
357 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
358 ioc->transport_cmds.smid = smid;
359
360 data_out_sz = sizeof(struct rep_manu_request);
361 data_in_sz = sizeof(struct rep_manu_reply);
362 data_out = pci_alloc_consistent(ioc->pdev, data_out_sz + data_in_sz,
363 &data_out_dma);
364
365 if (!data_out) {
366 pr_err("failure at %s:%d/%s()!\n", __FILE__,
367 __LINE__, __func__);
368 rc = -ENOMEM;
369 mpt3sas_base_free_smid(ioc, smid);
370 goto out;
371 }
372
373 data_in_dma = data_out_dma + sizeof(struct rep_manu_request);
374
375 manufacture_request = data_out;
376 manufacture_request->smp_frame_type = 0x40;
377 manufacture_request->function = 1;
378 manufacture_request->reserved = 0;
379 manufacture_request->request_length = 0;
380
381 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
382 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
383 mpi_request->PhysicalPort = 0xFF;
384 mpi_request->SASAddress = cpu_to_le64(sas_address);
385 mpi_request->RequestDataLength = cpu_to_le16(data_out_sz);
386 psge = &mpi_request->SGL;
387
388 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
389 data_in_sz);
390
391 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
392 "report_manufacture - send to sas_addr(0x%016llx)\n",
393 ioc->name, (unsigned long long)sas_address));
394 init_completion(&ioc->transport_cmds.done);
395 mpt3sas_base_put_smid_default(ioc, smid);
396 wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
397
398 if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
399 pr_err(MPT3SAS_FMT "%s: timeout\n",
400 ioc->name, __func__);
401 _debug_dump_mf(mpi_request,
402 sizeof(Mpi2SmpPassthroughRequest_t)/4);
403 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
404 issue_reset = 1;
405 goto issue_host_reset;
406 }
407
408 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
409 "report_manufacture - complete\n", ioc->name));
410
411 if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
412 u8 *tmp;
413
414 mpi_reply = ioc->transport_cmds.reply;
415
416 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
417 "report_manufacture - reply data transfer size(%d)\n",
418 ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
419
420 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
421 sizeof(struct rep_manu_reply))
422 goto out;
423
424 manufacture_reply = data_out + sizeof(struct rep_manu_request);
425 strncpy(edev->vendor_id, manufacture_reply->vendor_id,
426 SAS_EXPANDER_VENDOR_ID_LEN);
427 strncpy(edev->product_id, manufacture_reply->product_id,
428 SAS_EXPANDER_PRODUCT_ID_LEN);
429 strncpy(edev->product_rev, manufacture_reply->product_rev,
430 SAS_EXPANDER_PRODUCT_REV_LEN);
431 edev->level = manufacture_reply->sas_format & 1;
432 if (edev->level) {
433 strncpy(edev->component_vendor_id,
434 manufacture_reply->component_vendor_id,
435 SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN);
436 tmp = (u8 *)&manufacture_reply->component_id;
437 edev->component_id = tmp[0] << 8 | tmp[1];
438 edev->component_revision_id =
439 manufacture_reply->component_revision_id;
440 }
441 } else
442 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
443 "report_manufacture - no reply\n", ioc->name));
444
445 issue_host_reset:
446 if (issue_reset)
447 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
448 out:
449 ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
450 if (data_out)
451 pci_free_consistent(ioc->pdev, data_out_sz + data_in_sz,
452 data_out, data_out_dma);
453
454 mutex_unlock(&ioc->transport_cmds.mutex);
455 return rc;
456 }
457
458
459 /**
460 * _transport_delete_port - helper function to removing a port
461 * @ioc: per adapter object
462 * @mpt3sas_port: mpt3sas per port object
463 */
464 static void
465 _transport_delete_port(struct MPT3SAS_ADAPTER *ioc,
466 struct _sas_port *mpt3sas_port)
467 {
468 u64 sas_address = mpt3sas_port->remote_identify.sas_address;
469 enum sas_device_type device_type =
470 mpt3sas_port->remote_identify.device_type;
471
472 dev_printk(KERN_INFO, &mpt3sas_port->port->dev,
473 "remove: sas_addr(0x%016llx)\n",
474 (unsigned long long) sas_address);
475
476 ioc->logging_level |= MPT_DEBUG_TRANSPORT;
477 if (device_type == SAS_END_DEVICE)
478 mpt3sas_device_remove_by_sas_address(ioc, sas_address);
479 else if (device_type == SAS_EDGE_EXPANDER_DEVICE ||
480 device_type == SAS_FANOUT_EXPANDER_DEVICE)
481 mpt3sas_expander_remove(ioc, sas_address);
482 ioc->logging_level &= ~MPT_DEBUG_TRANSPORT;
483 }
484
485 /**
486 * _transport_delete_phy - helper function to removing single phy from port
487 * @ioc: per adapter object
488 * @mpt3sas_port: mpt3sas per port object
489 * @mpt3sas_phy: mpt3sas per phy object
490 */
491 static void
492 _transport_delete_phy(struct MPT3SAS_ADAPTER *ioc,
493 struct _sas_port *mpt3sas_port, struct _sas_phy *mpt3sas_phy)
494 {
495 u64 sas_address = mpt3sas_port->remote_identify.sas_address;
496
497 dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
498 "remove: sas_addr(0x%016llx), phy(%d)\n",
499 (unsigned long long) sas_address, mpt3sas_phy->phy_id);
500
501 list_del(&mpt3sas_phy->port_siblings);
502 mpt3sas_port->num_phys--;
503 sas_port_delete_phy(mpt3sas_port->port, mpt3sas_phy->phy);
504 mpt3sas_phy->phy_belongs_to_port = 0;
505 }
506
507 /**
508 * _transport_add_phy - helper function to adding single phy to port
509 * @ioc: per adapter object
510 * @mpt3sas_port: mpt3sas per port object
511 * @mpt3sas_phy: mpt3sas per phy object
512 */
513 static void
514 _transport_add_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_port *mpt3sas_port,
515 struct _sas_phy *mpt3sas_phy)
516 {
517 u64 sas_address = mpt3sas_port->remote_identify.sas_address;
518
519 dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
520 "add: sas_addr(0x%016llx), phy(%d)\n", (unsigned long long)
521 sas_address, mpt3sas_phy->phy_id);
522
523 list_add_tail(&mpt3sas_phy->port_siblings, &mpt3sas_port->phy_list);
524 mpt3sas_port->num_phys++;
525 sas_port_add_phy(mpt3sas_port->port, mpt3sas_phy->phy);
526 mpt3sas_phy->phy_belongs_to_port = 1;
527 }
528
529 /**
530 * _transport_add_phy_to_an_existing_port - adding new phy to existing port
531 * @ioc: per adapter object
532 * @sas_node: sas node object (either expander or sas host)
533 * @mpt3sas_phy: mpt3sas per phy object
534 * @sas_address: sas address of device/expander were phy needs to be added to
535 */
536 static void
537 _transport_add_phy_to_an_existing_port(struct MPT3SAS_ADAPTER *ioc,
538 struct _sas_node *sas_node, struct _sas_phy *mpt3sas_phy,
539 u64 sas_address)
540 {
541 struct _sas_port *mpt3sas_port;
542 struct _sas_phy *phy_srch;
543
544 if (mpt3sas_phy->phy_belongs_to_port == 1)
545 return;
546
547 list_for_each_entry(mpt3sas_port, &sas_node->sas_port_list,
548 port_list) {
549 if (mpt3sas_port->remote_identify.sas_address !=
550 sas_address)
551 continue;
552 list_for_each_entry(phy_srch, &mpt3sas_port->phy_list,
553 port_siblings) {
554 if (phy_srch == mpt3sas_phy)
555 return;
556 }
557 _transport_add_phy(ioc, mpt3sas_port, mpt3sas_phy);
558 return;
559 }
560
561 }
562
563 /**
564 * _transport_del_phy_from_an_existing_port - delete phy from existing port
565 * @ioc: per adapter object
566 * @sas_node: sas node object (either expander or sas host)
567 * @mpt3sas_phy: mpt3sas per phy object
568 */
569 static void
570 _transport_del_phy_from_an_existing_port(struct MPT3SAS_ADAPTER *ioc,
571 struct _sas_node *sas_node, struct _sas_phy *mpt3sas_phy)
572 {
573 struct _sas_port *mpt3sas_port, *next;
574 struct _sas_phy *phy_srch;
575
576 if (mpt3sas_phy->phy_belongs_to_port == 0)
577 return;
578
579 list_for_each_entry_safe(mpt3sas_port, next, &sas_node->sas_port_list,
580 port_list) {
581 list_for_each_entry(phy_srch, &mpt3sas_port->phy_list,
582 port_siblings) {
583 if (phy_srch != mpt3sas_phy)
584 continue;
585
586 if (mpt3sas_port->num_phys == 1)
587 _transport_delete_port(ioc, mpt3sas_port);
588 else
589 _transport_delete_phy(ioc, mpt3sas_port,
590 mpt3sas_phy);
591 return;
592 }
593 }
594 }
595
596 /**
597 * _transport_sanity_check - sanity check when adding a new port
598 * @ioc: per adapter object
599 * @sas_node: sas node object (either expander or sas host)
600 * @sas_address: sas address of device being added
601 *
602 * See the explanation above from _transport_delete_duplicate_port
603 */
604 static void
605 _transport_sanity_check(struct MPT3SAS_ADAPTER *ioc, struct _sas_node *sas_node,
606 u64 sas_address)
607 {
608 int i;
609
610 for (i = 0; i < sas_node->num_phys; i++) {
611 if (sas_node->phy[i].remote_identify.sas_address != sas_address)
612 continue;
613 if (sas_node->phy[i].phy_belongs_to_port == 1)
614 _transport_del_phy_from_an_existing_port(ioc, sas_node,
615 &sas_node->phy[i]);
616 }
617 }
618
619 /**
620 * mpt3sas_transport_port_add - insert port to the list
621 * @ioc: per adapter object
622 * @handle: handle of attached device
623 * @sas_address: sas address of parent expander or sas host
624 * Context: This function will acquire ioc->sas_node_lock.
625 *
626 * Adding new port object to the sas_node->sas_port_list.
627 *
628 * Return: mpt3sas_port.
629 */
630 struct _sas_port *
631 mpt3sas_transport_port_add(struct MPT3SAS_ADAPTER *ioc, u16 handle,
632 u64 sas_address)
633 {
634 struct _sas_phy *mpt3sas_phy, *next;
635 struct _sas_port *mpt3sas_port;
636 unsigned long flags;
637 struct _sas_node *sas_node;
638 struct sas_rphy *rphy;
639 struct _sas_device *sas_device = NULL;
640 int i;
641 struct sas_port *port;
642
643 mpt3sas_port = kzalloc(sizeof(struct _sas_port),
644 GFP_KERNEL);
645 if (!mpt3sas_port) {
646 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
647 ioc->name, __FILE__, __LINE__, __func__);
648 return NULL;
649 }
650
651 INIT_LIST_HEAD(&mpt3sas_port->port_list);
652 INIT_LIST_HEAD(&mpt3sas_port->phy_list);
653 spin_lock_irqsave(&ioc->sas_node_lock, flags);
654 sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
655 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
656
657 if (!sas_node) {
658 pr_err(MPT3SAS_FMT
659 "%s: Could not find parent sas_address(0x%016llx)!\n",
660 ioc->name, __func__, (unsigned long long)sas_address);
661 goto out_fail;
662 }
663
664 if ((_transport_set_identify(ioc, handle,
665 &mpt3sas_port->remote_identify))) {
666 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
667 ioc->name, __FILE__, __LINE__, __func__);
668 goto out_fail;
669 }
670
671 if (mpt3sas_port->remote_identify.device_type == SAS_PHY_UNUSED) {
672 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
673 ioc->name, __FILE__, __LINE__, __func__);
674 goto out_fail;
675 }
676
677 _transport_sanity_check(ioc, sas_node,
678 mpt3sas_port->remote_identify.sas_address);
679
680 for (i = 0; i < sas_node->num_phys; i++) {
681 if (sas_node->phy[i].remote_identify.sas_address !=
682 mpt3sas_port->remote_identify.sas_address)
683 continue;
684 list_add_tail(&sas_node->phy[i].port_siblings,
685 &mpt3sas_port->phy_list);
686 mpt3sas_port->num_phys++;
687 }
688
689 if (!mpt3sas_port->num_phys) {
690 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
691 ioc->name, __FILE__, __LINE__, __func__);
692 goto out_fail;
693 }
694
695 if (!sas_node->parent_dev) {
696 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
697 ioc->name, __FILE__, __LINE__, __func__);
698 goto out_fail;
699 }
700 port = sas_port_alloc_num(sas_node->parent_dev);
701 if ((sas_port_add(port))) {
702 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
703 ioc->name, __FILE__, __LINE__, __func__);
704 goto out_fail;
705 }
706
707 list_for_each_entry(mpt3sas_phy, &mpt3sas_port->phy_list,
708 port_siblings) {
709 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
710 dev_printk(KERN_INFO, &port->dev,
711 "add: handle(0x%04x), sas_addr(0x%016llx), phy(%d)\n",
712 handle, (unsigned long long)
713 mpt3sas_port->remote_identify.sas_address,
714 mpt3sas_phy->phy_id);
715 sas_port_add_phy(port, mpt3sas_phy->phy);
716 mpt3sas_phy->phy_belongs_to_port = 1;
717 }
718
719 mpt3sas_port->port = port;
720 if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE)
721 rphy = sas_end_device_alloc(port);
722 else
723 rphy = sas_expander_alloc(port,
724 mpt3sas_port->remote_identify.device_type);
725
726 rphy->identify = mpt3sas_port->remote_identify;
727
728 if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) {
729 sas_device = mpt3sas_get_sdev_by_addr(ioc,
730 mpt3sas_port->remote_identify.sas_address);
731 if (!sas_device) {
732 dfailprintk(ioc, printk(MPT3SAS_FMT
733 "failure at %s:%d/%s()!\n",
734 ioc->name, __FILE__, __LINE__, __func__));
735 goto out_fail;
736 }
737 sas_device->pend_sas_rphy_add = 1;
738 }
739
740 if ((sas_rphy_add(rphy))) {
741 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
742 ioc->name, __FILE__, __LINE__, __func__);
743 }
744
745 if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) {
746 sas_device->pend_sas_rphy_add = 0;
747 sas_device_put(sas_device);
748 }
749
750 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
751 dev_printk(KERN_INFO, &rphy->dev,
752 "add: handle(0x%04x), sas_addr(0x%016llx)\n",
753 handle, (unsigned long long)
754 mpt3sas_port->remote_identify.sas_address);
755 mpt3sas_port->rphy = rphy;
756 spin_lock_irqsave(&ioc->sas_node_lock, flags);
757 list_add_tail(&mpt3sas_port->port_list, &sas_node->sas_port_list);
758 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
759
760 /* fill in report manufacture */
761 if (mpt3sas_port->remote_identify.device_type ==
762 MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
763 mpt3sas_port->remote_identify.device_type ==
764 MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
765 _transport_expander_report_manufacture(ioc,
766 mpt3sas_port->remote_identify.sas_address,
767 rphy_to_expander_device(rphy));
768 return mpt3sas_port;
769
770 out_fail:
771 list_for_each_entry_safe(mpt3sas_phy, next, &mpt3sas_port->phy_list,
772 port_siblings)
773 list_del(&mpt3sas_phy->port_siblings);
774 kfree(mpt3sas_port);
775 return NULL;
776 }
777
778 /**
779 * mpt3sas_transport_port_remove - remove port from the list
780 * @ioc: per adapter object
781 * @sas_address: sas address of attached device
782 * @sas_address_parent: sas address of parent expander or sas host
783 * Context: This function will acquire ioc->sas_node_lock.
784 *
785 * Removing object and freeing associated memory from the
786 * ioc->sas_port_list.
787 */
788 void
789 mpt3sas_transport_port_remove(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
790 u64 sas_address_parent)
791 {
792 int i;
793 unsigned long flags;
794 struct _sas_port *mpt3sas_port, *next;
795 struct _sas_node *sas_node;
796 u8 found = 0;
797 struct _sas_phy *mpt3sas_phy, *next_phy;
798
799 spin_lock_irqsave(&ioc->sas_node_lock, flags);
800 sas_node = _transport_sas_node_find_by_sas_address(ioc,
801 sas_address_parent);
802 if (!sas_node) {
803 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
804 return;
805 }
806 list_for_each_entry_safe(mpt3sas_port, next, &sas_node->sas_port_list,
807 port_list) {
808 if (mpt3sas_port->remote_identify.sas_address != sas_address)
809 continue;
810 found = 1;
811 list_del(&mpt3sas_port->port_list);
812 goto out;
813 }
814 out:
815 if (!found) {
816 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
817 return;
818 }
819
820 for (i = 0; i < sas_node->num_phys; i++) {
821 if (sas_node->phy[i].remote_identify.sas_address == sas_address)
822 memset(&sas_node->phy[i].remote_identify, 0 ,
823 sizeof(struct sas_identify));
824 }
825
826 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
827
828 list_for_each_entry_safe(mpt3sas_phy, next_phy,
829 &mpt3sas_port->phy_list, port_siblings) {
830 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
831 dev_printk(KERN_INFO, &mpt3sas_port->port->dev,
832 "remove: sas_addr(0x%016llx), phy(%d)\n",
833 (unsigned long long)
834 mpt3sas_port->remote_identify.sas_address,
835 mpt3sas_phy->phy_id);
836 mpt3sas_phy->phy_belongs_to_port = 0;
837 if (!ioc->remove_host)
838 sas_port_delete_phy(mpt3sas_port->port,
839 mpt3sas_phy->phy);
840 list_del(&mpt3sas_phy->port_siblings);
841 }
842 if (!ioc->remove_host)
843 sas_port_delete(mpt3sas_port->port);
844 kfree(mpt3sas_port);
845 }
846
847 /**
848 * mpt3sas_transport_add_host_phy - report sas_host phy to transport
849 * @ioc: per adapter object
850 * @mpt3sas_phy: mpt3sas per phy object
851 * @phy_pg0: sas phy page 0
852 * @parent_dev: parent device class object
853 *
854 * Return: 0 for success, non-zero for failure.
855 */
856 int
857 mpt3sas_transport_add_host_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
858 *mpt3sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
859 {
860 struct sas_phy *phy;
861 int phy_index = mpt3sas_phy->phy_id;
862
863
864 INIT_LIST_HEAD(&mpt3sas_phy->port_siblings);
865 phy = sas_phy_alloc(parent_dev, phy_index);
866 if (!phy) {
867 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
868 ioc->name, __FILE__, __LINE__, __func__);
869 return -1;
870 }
871 if ((_transport_set_identify(ioc, mpt3sas_phy->handle,
872 &mpt3sas_phy->identify))) {
873 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
874 ioc->name, __FILE__, __LINE__, __func__);
875 sas_phy_free(phy);
876 return -1;
877 }
878 phy->identify = mpt3sas_phy->identify;
879 mpt3sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
880 if (mpt3sas_phy->attached_handle)
881 _transport_set_identify(ioc, mpt3sas_phy->attached_handle,
882 &mpt3sas_phy->remote_identify);
883 phy->identify.phy_identifier = mpt3sas_phy->phy_id;
884 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
885 phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
886 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
887 phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
888 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
889 phy_pg0.HwLinkRate >> 4);
890 phy->minimum_linkrate = _transport_convert_phy_link_rate(
891 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
892 phy->maximum_linkrate = _transport_convert_phy_link_rate(
893 phy_pg0.ProgrammedLinkRate >> 4);
894
895 if ((sas_phy_add(phy))) {
896 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
897 ioc->name, __FILE__, __LINE__, __func__);
898 sas_phy_free(phy);
899 return -1;
900 }
901 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
902 dev_printk(KERN_INFO, &phy->dev,
903 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
904 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
905 mpt3sas_phy->handle, (unsigned long long)
906 mpt3sas_phy->identify.sas_address,
907 mpt3sas_phy->attached_handle,
908 (unsigned long long)
909 mpt3sas_phy->remote_identify.sas_address);
910 mpt3sas_phy->phy = phy;
911 return 0;
912 }
913
914
915 /**
916 * mpt3sas_transport_add_expander_phy - report expander phy to transport
917 * @ioc: per adapter object
918 * @mpt3sas_phy: mpt3sas per phy object
919 * @expander_pg1: expander page 1
920 * @parent_dev: parent device class object
921 *
922 * Return: 0 for success, non-zero for failure.
923 */
924 int
925 mpt3sas_transport_add_expander_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
926 *mpt3sas_phy, Mpi2ExpanderPage1_t expander_pg1,
927 struct device *parent_dev)
928 {
929 struct sas_phy *phy;
930 int phy_index = mpt3sas_phy->phy_id;
931
932 INIT_LIST_HEAD(&mpt3sas_phy->port_siblings);
933 phy = sas_phy_alloc(parent_dev, phy_index);
934 if (!phy) {
935 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
936 ioc->name, __FILE__, __LINE__, __func__);
937 return -1;
938 }
939 if ((_transport_set_identify(ioc, mpt3sas_phy->handle,
940 &mpt3sas_phy->identify))) {
941 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
942 ioc->name, __FILE__, __LINE__, __func__);
943 sas_phy_free(phy);
944 return -1;
945 }
946 phy->identify = mpt3sas_phy->identify;
947 mpt3sas_phy->attached_handle =
948 le16_to_cpu(expander_pg1.AttachedDevHandle);
949 if (mpt3sas_phy->attached_handle)
950 _transport_set_identify(ioc, mpt3sas_phy->attached_handle,
951 &mpt3sas_phy->remote_identify);
952 phy->identify.phy_identifier = mpt3sas_phy->phy_id;
953 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
954 expander_pg1.NegotiatedLinkRate &
955 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
956 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
957 expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
958 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
959 expander_pg1.HwLinkRate >> 4);
960 phy->minimum_linkrate = _transport_convert_phy_link_rate(
961 expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
962 phy->maximum_linkrate = _transport_convert_phy_link_rate(
963 expander_pg1.ProgrammedLinkRate >> 4);
964
965 if ((sas_phy_add(phy))) {
966 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
967 ioc->name, __FILE__, __LINE__, __func__);
968 sas_phy_free(phy);
969 return -1;
970 }
971 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
972 dev_printk(KERN_INFO, &phy->dev,
973 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
974 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
975 mpt3sas_phy->handle, (unsigned long long)
976 mpt3sas_phy->identify.sas_address,
977 mpt3sas_phy->attached_handle,
978 (unsigned long long)
979 mpt3sas_phy->remote_identify.sas_address);
980 mpt3sas_phy->phy = phy;
981 return 0;
982 }
983
984 /**
985 * mpt3sas_transport_update_links - refreshing phy link changes
986 * @ioc: per adapter object
987 * @sas_address: sas address of parent expander or sas host
988 * @handle: attached device handle
989 * @phy_number: phy number
990 * @link_rate: new link rate
991 */
992 void
993 mpt3sas_transport_update_links(struct MPT3SAS_ADAPTER *ioc,
994 u64 sas_address, u16 handle, u8 phy_number, u8 link_rate)
995 {
996 unsigned long flags;
997 struct _sas_node *sas_node;
998 struct _sas_phy *mpt3sas_phy;
999
1000 if (ioc->shost_recovery || ioc->pci_error_recovery)
1001 return;
1002
1003 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1004 sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
1005 if (!sas_node) {
1006 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1007 return;
1008 }
1009
1010 mpt3sas_phy = &sas_node->phy[phy_number];
1011 mpt3sas_phy->attached_handle = handle;
1012 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1013 if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5)) {
1014 _transport_set_identify(ioc, handle,
1015 &mpt3sas_phy->remote_identify);
1016 _transport_add_phy_to_an_existing_port(ioc, sas_node,
1017 mpt3sas_phy, mpt3sas_phy->remote_identify.sas_address);
1018 } else
1019 memset(&mpt3sas_phy->remote_identify, 0 , sizeof(struct
1020 sas_identify));
1021
1022 if (mpt3sas_phy->phy)
1023 mpt3sas_phy->phy->negotiated_linkrate =
1024 _transport_convert_phy_link_rate(link_rate);
1025
1026 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1027 dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
1028 "refresh: parent sas_addr(0x%016llx),\n"
1029 "\tlink_rate(0x%02x), phy(%d)\n"
1030 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1031 (unsigned long long)sas_address,
1032 link_rate, phy_number, handle, (unsigned long long)
1033 mpt3sas_phy->remote_identify.sas_address);
1034 }
1035
1036 static inline void *
1037 phy_to_ioc(struct sas_phy *phy)
1038 {
1039 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1040 return shost_priv(shost);
1041 }
1042
1043 static inline void *
1044 rphy_to_ioc(struct sas_rphy *rphy)
1045 {
1046 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1047 return shost_priv(shost);
1048 }
1049
1050 /* report phy error log structure */
1051 struct phy_error_log_request {
1052 u8 smp_frame_type; /* 0x40 */
1053 u8 function; /* 0x11 */
1054 u8 allocated_response_length;
1055 u8 request_length; /* 02 */
1056 u8 reserved_1[5];
1057 u8 phy_identifier;
1058 u8 reserved_2[2];
1059 };
1060
1061 /* report phy error log reply structure */
1062 struct phy_error_log_reply {
1063 u8 smp_frame_type; /* 0x41 */
1064 u8 function; /* 0x11 */
1065 u8 function_result;
1066 u8 response_length;
1067 __be16 expander_change_count;
1068 u8 reserved_1[3];
1069 u8 phy_identifier;
1070 u8 reserved_2[2];
1071 __be32 invalid_dword;
1072 __be32 running_disparity_error;
1073 __be32 loss_of_dword_sync;
1074 __be32 phy_reset_problem;
1075 };
1076
1077 /**
1078 * _transport_get_expander_phy_error_log - return expander counters
1079 * @ioc: per adapter object
1080 * @phy: The sas phy object
1081 *
1082 * Return: 0 for success, non-zero for failure.
1083 *
1084 */
1085 static int
1086 _transport_get_expander_phy_error_log(struct MPT3SAS_ADAPTER *ioc,
1087 struct sas_phy *phy)
1088 {
1089 Mpi2SmpPassthroughRequest_t *mpi_request;
1090 Mpi2SmpPassthroughReply_t *mpi_reply;
1091 struct phy_error_log_request *phy_error_log_request;
1092 struct phy_error_log_reply *phy_error_log_reply;
1093 int rc;
1094 u16 smid;
1095 u32 ioc_state;
1096 void *psge;
1097 u8 issue_reset = 0;
1098 void *data_out = NULL;
1099 dma_addr_t data_out_dma;
1100 u32 sz;
1101 u16 wait_state_count;
1102
1103 if (ioc->shost_recovery || ioc->pci_error_recovery) {
1104 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
1105 __func__, ioc->name);
1106 return -EFAULT;
1107 }
1108
1109 mutex_lock(&ioc->transport_cmds.mutex);
1110
1111 if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1112 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n",
1113 ioc->name, __func__);
1114 rc = -EAGAIN;
1115 goto out;
1116 }
1117 ioc->transport_cmds.status = MPT3_CMD_PENDING;
1118
1119 wait_state_count = 0;
1120 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1121 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1122 if (wait_state_count++ == 10) {
1123 pr_err(MPT3SAS_FMT
1124 "%s: failed due to ioc not operational\n",
1125 ioc->name, __func__);
1126 rc = -EFAULT;
1127 goto out;
1128 }
1129 ssleep(1);
1130 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1131 pr_info(MPT3SAS_FMT
1132 "%s: waiting for operational state(count=%d)\n",
1133 ioc->name, __func__, wait_state_count);
1134 }
1135 if (wait_state_count)
1136 pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
1137 ioc->name, __func__);
1138
1139 smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
1140 if (!smid) {
1141 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
1142 ioc->name, __func__);
1143 rc = -EAGAIN;
1144 goto out;
1145 }
1146
1147 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1148 ioc->transport_cmds.smid = smid;
1149
1150 sz = sizeof(struct phy_error_log_request) +
1151 sizeof(struct phy_error_log_reply);
1152 data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
1153 if (!data_out) {
1154 pr_err("failure at %s:%d/%s()!\n", __FILE__,
1155 __LINE__, __func__);
1156 rc = -ENOMEM;
1157 mpt3sas_base_free_smid(ioc, smid);
1158 goto out;
1159 }
1160
1161 rc = -EINVAL;
1162 memset(data_out, 0, sz);
1163 phy_error_log_request = data_out;
1164 phy_error_log_request->smp_frame_type = 0x40;
1165 phy_error_log_request->function = 0x11;
1166 phy_error_log_request->request_length = 2;
1167 phy_error_log_request->allocated_response_length = 0;
1168 phy_error_log_request->phy_identifier = phy->number;
1169
1170 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1171 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1172 mpi_request->PhysicalPort = 0xFF;
1173 mpi_request->VF_ID = 0; /* TODO */
1174 mpi_request->VP_ID = 0;
1175 mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1176 mpi_request->RequestDataLength =
1177 cpu_to_le16(sizeof(struct phy_error_log_request));
1178 psge = &mpi_request->SGL;
1179
1180 ioc->build_sg(ioc, psge, data_out_dma,
1181 sizeof(struct phy_error_log_request),
1182 data_out_dma + sizeof(struct phy_error_log_request),
1183 sizeof(struct phy_error_log_reply));
1184
1185 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1186 "phy_error_log - send to sas_addr(0x%016llx), phy(%d)\n",
1187 ioc->name, (unsigned long long)phy->identify.sas_address,
1188 phy->number));
1189 init_completion(&ioc->transport_cmds.done);
1190 mpt3sas_base_put_smid_default(ioc, smid);
1191 wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
1192
1193 if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
1194 pr_err(MPT3SAS_FMT "%s: timeout\n",
1195 ioc->name, __func__);
1196 _debug_dump_mf(mpi_request,
1197 sizeof(Mpi2SmpPassthroughRequest_t)/4);
1198 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
1199 issue_reset = 1;
1200 goto issue_host_reset;
1201 }
1202
1203 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1204 "phy_error_log - complete\n", ioc->name));
1205
1206 if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
1207
1208 mpi_reply = ioc->transport_cmds.reply;
1209
1210 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1211 "phy_error_log - reply data transfer size(%d)\n",
1212 ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
1213
1214 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1215 sizeof(struct phy_error_log_reply))
1216 goto out;
1217
1218 phy_error_log_reply = data_out +
1219 sizeof(struct phy_error_log_request);
1220
1221 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1222 "phy_error_log - function_result(%d)\n",
1223 ioc->name, phy_error_log_reply->function_result));
1224
1225 phy->invalid_dword_count =
1226 be32_to_cpu(phy_error_log_reply->invalid_dword);
1227 phy->running_disparity_error_count =
1228 be32_to_cpu(phy_error_log_reply->running_disparity_error);
1229 phy->loss_of_dword_sync_count =
1230 be32_to_cpu(phy_error_log_reply->loss_of_dword_sync);
1231 phy->phy_reset_problem_count =
1232 be32_to_cpu(phy_error_log_reply->phy_reset_problem);
1233 rc = 0;
1234 } else
1235 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1236 "phy_error_log - no reply\n", ioc->name));
1237
1238 issue_host_reset:
1239 if (issue_reset)
1240 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1241 out:
1242 ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
1243 if (data_out)
1244 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
1245
1246 mutex_unlock(&ioc->transport_cmds.mutex);
1247 return rc;
1248 }
1249
1250 /**
1251 * _transport_get_linkerrors - return phy counters for both hba and expanders
1252 * @phy: The sas phy object
1253 *
1254 * Return: 0 for success, non-zero for failure.
1255 *
1256 */
1257 static int
1258 _transport_get_linkerrors(struct sas_phy *phy)
1259 {
1260 struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1261 unsigned long flags;
1262 Mpi2ConfigReply_t mpi_reply;
1263 Mpi2SasPhyPage1_t phy_pg1;
1264
1265 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1266 if (_transport_sas_node_find_by_sas_address(ioc,
1267 phy->identify.sas_address) == NULL) {
1268 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1269 return -EINVAL;
1270 }
1271 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1272
1273 if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1274 return _transport_get_expander_phy_error_log(ioc, phy);
1275
1276 /* get hba phy error logs */
1277 if ((mpt3sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
1278 phy->number))) {
1279 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1280 ioc->name, __FILE__, __LINE__, __func__);
1281 return -ENXIO;
1282 }
1283
1284 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1285 pr_info(MPT3SAS_FMT
1286 "phy(%d), ioc_status (0x%04x), loginfo(0x%08x)\n",
1287 ioc->name, phy->number,
1288 le16_to_cpu(mpi_reply.IOCStatus),
1289 le32_to_cpu(mpi_reply.IOCLogInfo));
1290
1291 phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
1292 phy->running_disparity_error_count =
1293 le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
1294 phy->loss_of_dword_sync_count =
1295 le32_to_cpu(phy_pg1.LossDwordSynchCount);
1296 phy->phy_reset_problem_count =
1297 le32_to_cpu(phy_pg1.PhyResetProblemCount);
1298 return 0;
1299 }
1300
1301 /**
1302 * _transport_get_enclosure_identifier -
1303 * @rphy: The sas phy object
1304 * @identifier: ?
1305 *
1306 * Obtain the enclosure logical id for an expander.
1307 * Return: 0 for success, non-zero for failure.
1308 */
1309 static int
1310 _transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
1311 {
1312 struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1313 struct _sas_device *sas_device;
1314 unsigned long flags;
1315 int rc;
1316
1317 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1318 sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1319 rphy->identify.sas_address);
1320 if (sas_device) {
1321 *identifier = sas_device->enclosure_logical_id;
1322 rc = 0;
1323 sas_device_put(sas_device);
1324 } else {
1325 *identifier = 0;
1326 rc = -ENXIO;
1327 }
1328
1329 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1330 return rc;
1331 }
1332
1333 /**
1334 * _transport_get_bay_identifier -
1335 * @rphy: The sas phy object
1336 *
1337 * Return: the slot id for a device that resides inside an enclosure.
1338 */
1339 static int
1340 _transport_get_bay_identifier(struct sas_rphy *rphy)
1341 {
1342 struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1343 struct _sas_device *sas_device;
1344 unsigned long flags;
1345 int rc;
1346
1347 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1348 sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1349 rphy->identify.sas_address);
1350 if (sas_device) {
1351 rc = sas_device->slot;
1352 sas_device_put(sas_device);
1353 } else {
1354 rc = -ENXIO;
1355 }
1356 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1357 return rc;
1358 }
1359
1360 /* phy control request structure */
1361 struct phy_control_request {
1362 u8 smp_frame_type; /* 0x40 */
1363 u8 function; /* 0x91 */
1364 u8 allocated_response_length;
1365 u8 request_length; /* 0x09 */
1366 u16 expander_change_count;
1367 u8 reserved_1[3];
1368 u8 phy_identifier;
1369 u8 phy_operation;
1370 u8 reserved_2[13];
1371 u64 attached_device_name;
1372 u8 programmed_min_physical_link_rate;
1373 u8 programmed_max_physical_link_rate;
1374 u8 reserved_3[6];
1375 };
1376
1377 /* phy control reply structure */
1378 struct phy_control_reply {
1379 u8 smp_frame_type; /* 0x41 */
1380 u8 function; /* 0x11 */
1381 u8 function_result;
1382 u8 response_length;
1383 };
1384
1385 #define SMP_PHY_CONTROL_LINK_RESET (0x01)
1386 #define SMP_PHY_CONTROL_HARD_RESET (0x02)
1387 #define SMP_PHY_CONTROL_DISABLE (0x03)
1388
1389 /**
1390 * _transport_expander_phy_control - expander phy control
1391 * @ioc: per adapter object
1392 * @phy: The sas phy object
1393 * @phy_operation: ?
1394 *
1395 * Return: 0 for success, non-zero for failure.
1396 *
1397 */
1398 static int
1399 _transport_expander_phy_control(struct MPT3SAS_ADAPTER *ioc,
1400 struct sas_phy *phy, u8 phy_operation)
1401 {
1402 Mpi2SmpPassthroughRequest_t *mpi_request;
1403 Mpi2SmpPassthroughReply_t *mpi_reply;
1404 struct phy_control_request *phy_control_request;
1405 struct phy_control_reply *phy_control_reply;
1406 int rc;
1407 u16 smid;
1408 u32 ioc_state;
1409 void *psge;
1410 u8 issue_reset = 0;
1411 void *data_out = NULL;
1412 dma_addr_t data_out_dma;
1413 u32 sz;
1414 u16 wait_state_count;
1415
1416 if (ioc->shost_recovery || ioc->pci_error_recovery) {
1417 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
1418 __func__, ioc->name);
1419 return -EFAULT;
1420 }
1421
1422 mutex_lock(&ioc->transport_cmds.mutex);
1423
1424 if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1425 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n",
1426 ioc->name, __func__);
1427 rc = -EAGAIN;
1428 goto out;
1429 }
1430 ioc->transport_cmds.status = MPT3_CMD_PENDING;
1431
1432 wait_state_count = 0;
1433 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1434 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1435 if (wait_state_count++ == 10) {
1436 pr_err(MPT3SAS_FMT
1437 "%s: failed due to ioc not operational\n",
1438 ioc->name, __func__);
1439 rc = -EFAULT;
1440 goto out;
1441 }
1442 ssleep(1);
1443 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1444 pr_info(MPT3SAS_FMT
1445 "%s: waiting for operational state(count=%d)\n",
1446 ioc->name, __func__, wait_state_count);
1447 }
1448 if (wait_state_count)
1449 pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
1450 ioc->name, __func__);
1451
1452 smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
1453 if (!smid) {
1454 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
1455 ioc->name, __func__);
1456 rc = -EAGAIN;
1457 goto out;
1458 }
1459
1460 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1461 ioc->transport_cmds.smid = smid;
1462
1463 sz = sizeof(struct phy_control_request) +
1464 sizeof(struct phy_control_reply);
1465 data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
1466 if (!data_out) {
1467 pr_err("failure at %s:%d/%s()!\n", __FILE__,
1468 __LINE__, __func__);
1469 rc = -ENOMEM;
1470 mpt3sas_base_free_smid(ioc, smid);
1471 goto out;
1472 }
1473
1474 rc = -EINVAL;
1475 memset(data_out, 0, sz);
1476 phy_control_request = data_out;
1477 phy_control_request->smp_frame_type = 0x40;
1478 phy_control_request->function = 0x91;
1479 phy_control_request->request_length = 9;
1480 phy_control_request->allocated_response_length = 0;
1481 phy_control_request->phy_identifier = phy->number;
1482 phy_control_request->phy_operation = phy_operation;
1483 phy_control_request->programmed_min_physical_link_rate =
1484 phy->minimum_linkrate << 4;
1485 phy_control_request->programmed_max_physical_link_rate =
1486 phy->maximum_linkrate << 4;
1487
1488 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1489 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1490 mpi_request->PhysicalPort = 0xFF;
1491 mpi_request->VF_ID = 0; /* TODO */
1492 mpi_request->VP_ID = 0;
1493 mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1494 mpi_request->RequestDataLength =
1495 cpu_to_le16(sizeof(struct phy_error_log_request));
1496 psge = &mpi_request->SGL;
1497
1498 ioc->build_sg(ioc, psge, data_out_dma,
1499 sizeof(struct phy_control_request),
1500 data_out_dma + sizeof(struct phy_control_request),
1501 sizeof(struct phy_control_reply));
1502
1503 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1504 "phy_control - send to sas_addr(0x%016llx), phy(%d), opcode(%d)\n",
1505 ioc->name, (unsigned long long)phy->identify.sas_address,
1506 phy->number, phy_operation));
1507 init_completion(&ioc->transport_cmds.done);
1508 mpt3sas_base_put_smid_default(ioc, smid);
1509 wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
1510
1511 if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
1512 pr_err(MPT3SAS_FMT "%s: timeout\n",
1513 ioc->name, __func__);
1514 _debug_dump_mf(mpi_request,
1515 sizeof(Mpi2SmpPassthroughRequest_t)/4);
1516 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
1517 issue_reset = 1;
1518 goto issue_host_reset;
1519 }
1520
1521 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1522 "phy_control - complete\n", ioc->name));
1523
1524 if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
1525
1526 mpi_reply = ioc->transport_cmds.reply;
1527
1528 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1529 "phy_control - reply data transfer size(%d)\n",
1530 ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
1531
1532 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1533 sizeof(struct phy_control_reply))
1534 goto out;
1535
1536 phy_control_reply = data_out +
1537 sizeof(struct phy_control_request);
1538
1539 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1540 "phy_control - function_result(%d)\n",
1541 ioc->name, phy_control_reply->function_result));
1542
1543 rc = 0;
1544 } else
1545 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1546 "phy_control - no reply\n", ioc->name));
1547
1548 issue_host_reset:
1549 if (issue_reset)
1550 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1551 out:
1552 ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
1553 if (data_out)
1554 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
1555
1556 mutex_unlock(&ioc->transport_cmds.mutex);
1557 return rc;
1558 }
1559
1560 /**
1561 * _transport_phy_reset -
1562 * @phy: The sas phy object
1563 * @hard_reset:
1564 *
1565 * Return: 0 for success, non-zero for failure.
1566 */
1567 static int
1568 _transport_phy_reset(struct sas_phy *phy, int hard_reset)
1569 {
1570 struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1571 Mpi2SasIoUnitControlReply_t mpi_reply;
1572 Mpi2SasIoUnitControlRequest_t mpi_request;
1573 unsigned long flags;
1574
1575 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1576 if (_transport_sas_node_find_by_sas_address(ioc,
1577 phy->identify.sas_address) == NULL) {
1578 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1579 return -EINVAL;
1580 }
1581 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1582
1583 /* handle expander phys */
1584 if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1585 return _transport_expander_phy_control(ioc, phy,
1586 (hard_reset == 1) ? SMP_PHY_CONTROL_HARD_RESET :
1587 SMP_PHY_CONTROL_LINK_RESET);
1588
1589 /* handle hba phys */
1590 memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
1591 mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
1592 mpi_request.Operation = hard_reset ?
1593 MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
1594 mpi_request.PhyNum = phy->number;
1595
1596 if ((mpt3sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
1597 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1598 ioc->name, __FILE__, __LINE__, __func__);
1599 return -ENXIO;
1600 }
1601
1602 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1603 pr_info(MPT3SAS_FMT
1604 "phy(%d), ioc_status(0x%04x), loginfo(0x%08x)\n",
1605 ioc->name, phy->number, le16_to_cpu(mpi_reply.IOCStatus),
1606 le32_to_cpu(mpi_reply.IOCLogInfo));
1607
1608 return 0;
1609 }
1610
1611 /**
1612 * _transport_phy_enable - enable/disable phys
1613 * @phy: The sas phy object
1614 * @enable: enable phy when true
1615 *
1616 * Only support sas_host direct attached phys.
1617 * Return: 0 for success, non-zero for failure.
1618 */
1619 static int
1620 _transport_phy_enable(struct sas_phy *phy, int enable)
1621 {
1622 struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1623 Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1624 Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
1625 Mpi2ConfigReply_t mpi_reply;
1626 u16 ioc_status;
1627 u16 sz;
1628 int rc = 0;
1629 unsigned long flags;
1630 int i, discovery_active;
1631
1632 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1633 if (_transport_sas_node_find_by_sas_address(ioc,
1634 phy->identify.sas_address) == NULL) {
1635 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1636 return -EINVAL;
1637 }
1638 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1639
1640 /* handle expander phys */
1641 if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1642 return _transport_expander_phy_control(ioc, phy,
1643 (enable == 1) ? SMP_PHY_CONTROL_LINK_RESET :
1644 SMP_PHY_CONTROL_DISABLE);
1645
1646 /* handle hba phys */
1647
1648 /* read sas_iounit page 0 */
1649 sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys *
1650 sizeof(Mpi2SasIOUnit0PhyData_t));
1651 sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
1652 if (!sas_iounit_pg0) {
1653 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1654 ioc->name, __FILE__, __LINE__, __func__);
1655 rc = -ENOMEM;
1656 goto out;
1657 }
1658 if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
1659 sas_iounit_pg0, sz))) {
1660 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1661 ioc->name, __FILE__, __LINE__, __func__);
1662 rc = -ENXIO;
1663 goto out;
1664 }
1665 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1666 MPI2_IOCSTATUS_MASK;
1667 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1668 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1669 ioc->name, __FILE__, __LINE__, __func__);
1670 rc = -EIO;
1671 goto out;
1672 }
1673
1674 /* unable to enable/disable phys when when discovery is active */
1675 for (i = 0, discovery_active = 0; i < ioc->sas_hba.num_phys ; i++) {
1676 if (sas_iounit_pg0->PhyData[i].PortFlags &
1677 MPI2_SASIOUNIT0_PORTFLAGS_DISCOVERY_IN_PROGRESS) {
1678 pr_err(MPT3SAS_FMT "discovery is active on " \
1679 "port = %d, phy = %d: unable to enable/disable "
1680 "phys, try again later!\n", ioc->name,
1681 sas_iounit_pg0->PhyData[i].Port, i);
1682 discovery_active = 1;
1683 }
1684 }
1685
1686 if (discovery_active) {
1687 rc = -EAGAIN;
1688 goto out;
1689 }
1690
1691 /* read sas_iounit page 1 */
1692 sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1693 sizeof(Mpi2SasIOUnit1PhyData_t));
1694 sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1695 if (!sas_iounit_pg1) {
1696 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1697 ioc->name, __FILE__, __LINE__, __func__);
1698 rc = -ENOMEM;
1699 goto out;
1700 }
1701 if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1702 sas_iounit_pg1, sz))) {
1703 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1704 ioc->name, __FILE__, __LINE__, __func__);
1705 rc = -ENXIO;
1706 goto out;
1707 }
1708 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1709 MPI2_IOCSTATUS_MASK;
1710 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1711 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1712 ioc->name, __FILE__, __LINE__, __func__);
1713 rc = -EIO;
1714 goto out;
1715 }
1716
1717 /* copy Port/PortFlags/PhyFlags from page 0 */
1718 for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
1719 sas_iounit_pg1->PhyData[i].Port =
1720 sas_iounit_pg0->PhyData[i].Port;
1721 sas_iounit_pg1->PhyData[i].PortFlags =
1722 (sas_iounit_pg0->PhyData[i].PortFlags &
1723 MPI2_SASIOUNIT0_PORTFLAGS_AUTO_PORT_CONFIG);
1724 sas_iounit_pg1->PhyData[i].PhyFlags =
1725 (sas_iounit_pg0->PhyData[i].PhyFlags &
1726 (MPI2_SASIOUNIT0_PHYFLAGS_ZONING_ENABLED +
1727 MPI2_SASIOUNIT0_PHYFLAGS_PHY_DISABLED));
1728 }
1729
1730 if (enable)
1731 sas_iounit_pg1->PhyData[phy->number].PhyFlags
1732 &= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1733 else
1734 sas_iounit_pg1->PhyData[phy->number].PhyFlags
1735 |= MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1736
1737 mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, sz);
1738
1739 /* link reset */
1740 if (enable)
1741 _transport_phy_reset(phy, 0);
1742
1743 out:
1744 kfree(sas_iounit_pg1);
1745 kfree(sas_iounit_pg0);
1746 return rc;
1747 }
1748
1749 /**
1750 * _transport_phy_speed - set phy min/max link rates
1751 * @phy: The sas phy object
1752 * @rates: rates defined in sas_phy_linkrates
1753 *
1754 * Only support sas_host direct attached phys.
1755 *
1756 * Return: 0 for success, non-zero for failure.
1757 */
1758 static int
1759 _transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
1760 {
1761 struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1762 Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1763 Mpi2SasPhyPage0_t phy_pg0;
1764 Mpi2ConfigReply_t mpi_reply;
1765 u16 ioc_status;
1766 u16 sz;
1767 int i;
1768 int rc = 0;
1769 unsigned long flags;
1770
1771 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1772 if (_transport_sas_node_find_by_sas_address(ioc,
1773 phy->identify.sas_address) == NULL) {
1774 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1775 return -EINVAL;
1776 }
1777 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1778
1779 if (!rates->minimum_linkrate)
1780 rates->minimum_linkrate = phy->minimum_linkrate;
1781 else if (rates->minimum_linkrate < phy->minimum_linkrate_hw)
1782 rates->minimum_linkrate = phy->minimum_linkrate_hw;
1783
1784 if (!rates->maximum_linkrate)
1785 rates->maximum_linkrate = phy->maximum_linkrate;
1786 else if (rates->maximum_linkrate > phy->maximum_linkrate_hw)
1787 rates->maximum_linkrate = phy->maximum_linkrate_hw;
1788
1789 /* handle expander phys */
1790 if (phy->identify.sas_address != ioc->sas_hba.sas_address) {
1791 phy->minimum_linkrate = rates->minimum_linkrate;
1792 phy->maximum_linkrate = rates->maximum_linkrate;
1793 return _transport_expander_phy_control(ioc, phy,
1794 SMP_PHY_CONTROL_LINK_RESET);
1795 }
1796
1797 /* handle hba phys */
1798
1799 /* sas_iounit page 1 */
1800 sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1801 sizeof(Mpi2SasIOUnit1PhyData_t));
1802 sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1803 if (!sas_iounit_pg1) {
1804 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1805 ioc->name, __FILE__, __LINE__, __func__);
1806 rc = -ENOMEM;
1807 goto out;
1808 }
1809 if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1810 sas_iounit_pg1, sz))) {
1811 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1812 ioc->name, __FILE__, __LINE__, __func__);
1813 rc = -ENXIO;
1814 goto out;
1815 }
1816 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1817 MPI2_IOCSTATUS_MASK;
1818 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1819 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1820 ioc->name, __FILE__, __LINE__, __func__);
1821 rc = -EIO;
1822 goto out;
1823 }
1824
1825 for (i = 0; i < ioc->sas_hba.num_phys; i++) {
1826 if (phy->number != i) {
1827 sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1828 (ioc->sas_hba.phy[i].phy->minimum_linkrate +
1829 (ioc->sas_hba.phy[i].phy->maximum_linkrate << 4));
1830 } else {
1831 sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1832 (rates->minimum_linkrate +
1833 (rates->maximum_linkrate << 4));
1834 }
1835 }
1836
1837 if (mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
1838 sz)) {
1839 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1840 ioc->name, __FILE__, __LINE__, __func__);
1841 rc = -ENXIO;
1842 goto out;
1843 }
1844
1845 /* link reset */
1846 _transport_phy_reset(phy, 0);
1847
1848 /* read phy page 0, then update the rates in the sas transport phy */
1849 if (!mpt3sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
1850 phy->number)) {
1851 phy->minimum_linkrate = _transport_convert_phy_link_rate(
1852 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1853 phy->maximum_linkrate = _transport_convert_phy_link_rate(
1854 phy_pg0.ProgrammedLinkRate >> 4);
1855 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1856 phy_pg0.NegotiatedLinkRate &
1857 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1858 }
1859
1860 out:
1861 kfree(sas_iounit_pg1);
1862 return rc;
1863 }
1864
1865 static int
1866 _transport_map_smp_buffer(struct device *dev, struct bsg_buffer *buf,
1867 dma_addr_t *dma_addr, size_t *dma_len, void **p)
1868 {
1869 /* Check if the request is split across multiple segments */
1870 if (buf->sg_cnt > 1) {
1871 *p = dma_alloc_coherent(dev, buf->payload_len, dma_addr,
1872 GFP_KERNEL);
1873 if (!*p)
1874 return -ENOMEM;
1875 *dma_len = buf->payload_len;
1876 } else {
1877 if (!dma_map_sg(dev, buf->sg_list, 1, DMA_BIDIRECTIONAL))
1878 return -ENOMEM;
1879 *dma_addr = sg_dma_address(buf->sg_list);
1880 *dma_len = sg_dma_len(buf->sg_list);
1881 *p = NULL;
1882 }
1883
1884 return 0;
1885 }
1886
1887 static void
1888 _transport_unmap_smp_buffer(struct device *dev, struct bsg_buffer *buf,
1889 dma_addr_t dma_addr, void *p)
1890 {
1891 if (p)
1892 dma_free_coherent(dev, buf->payload_len, p, dma_addr);
1893 else
1894 dma_unmap_sg(dev, buf->sg_list, 1, DMA_BIDIRECTIONAL);
1895 }
1896
1897 /**
1898 * _transport_smp_handler - transport portal for smp passthru
1899 * @job: ?
1900 * @shost: shost object
1901 * @rphy: sas transport rphy object
1902 *
1903 * This used primarily for smp_utils.
1904 * Example:
1905 * smp_rep_general /sys/class/bsg/expander-5:0
1906 */
1907 static void
1908 _transport_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
1909 struct sas_rphy *rphy)
1910 {
1911 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1912 Mpi2SmpPassthroughRequest_t *mpi_request;
1913 Mpi2SmpPassthroughReply_t *mpi_reply;
1914 int rc;
1915 u16 smid;
1916 u32 ioc_state;
1917 void *psge;
1918 dma_addr_t dma_addr_in;
1919 dma_addr_t dma_addr_out;
1920 void *addr_in = NULL;
1921 void *addr_out = NULL;
1922 size_t dma_len_in;
1923 size_t dma_len_out;
1924 u16 wait_state_count;
1925 unsigned int reslen = 0;
1926
1927 if (ioc->shost_recovery || ioc->pci_error_recovery) {
1928 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
1929 __func__, ioc->name);
1930 rc = -EFAULT;
1931 goto job_done;
1932 }
1933
1934 rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
1935 if (rc)
1936 goto job_done;
1937
1938 if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1939 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n", ioc->name,
1940 __func__);
1941 rc = -EAGAIN;
1942 goto out;
1943 }
1944 ioc->transport_cmds.status = MPT3_CMD_PENDING;
1945
1946 rc = _transport_map_smp_buffer(&ioc->pdev->dev, &job->request_payload,
1947 &dma_addr_out, &dma_len_out, &addr_out);
1948 if (rc)
1949 goto out;
1950 if (addr_out) {
1951 sg_copy_to_buffer(job->request_payload.sg_list,
1952 job->request_payload.sg_cnt, addr_out,
1953 job->request_payload.payload_len);
1954 }
1955
1956 rc = _transport_map_smp_buffer(&ioc->pdev->dev, &job->reply_payload,
1957 &dma_addr_in, &dma_len_in, &addr_in);
1958 if (rc)
1959 goto unmap_out;
1960
1961 wait_state_count = 0;
1962 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1963 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1964 if (wait_state_count++ == 10) {
1965 pr_err(MPT3SAS_FMT
1966 "%s: failed due to ioc not operational\n",
1967 ioc->name, __func__);
1968 rc = -EFAULT;
1969 goto unmap_in;
1970 }
1971 ssleep(1);
1972 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1973 pr_info(MPT3SAS_FMT
1974 "%s: waiting for operational state(count=%d)\n",
1975 ioc->name, __func__, wait_state_count);
1976 }
1977 if (wait_state_count)
1978 pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
1979 ioc->name, __func__);
1980
1981 smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
1982 if (!smid) {
1983 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
1984 ioc->name, __func__);
1985 rc = -EAGAIN;
1986 goto unmap_in;
1987 }
1988
1989 rc = 0;
1990 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1991 ioc->transport_cmds.smid = smid;
1992
1993 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1994 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1995 mpi_request->PhysicalPort = 0xFF;
1996 mpi_request->SASAddress = (rphy) ?
1997 cpu_to_le64(rphy->identify.sas_address) :
1998 cpu_to_le64(ioc->sas_hba.sas_address);
1999 mpi_request->RequestDataLength = cpu_to_le16(dma_len_out - 4);
2000 psge = &mpi_request->SGL;
2001
2002 ioc->build_sg(ioc, psge, dma_addr_out, dma_len_out - 4, dma_addr_in,
2003 dma_len_in - 4);
2004
2005 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
2006 "%s - sending smp request\n", ioc->name, __func__));
2007
2008 init_completion(&ioc->transport_cmds.done);
2009 mpt3sas_base_put_smid_default(ioc, smid);
2010 wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
2011
2012 if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
2013 pr_err(MPT3SAS_FMT "%s : timeout\n",
2014 __func__, ioc->name);
2015 _debug_dump_mf(mpi_request,
2016 sizeof(Mpi2SmpPassthroughRequest_t)/4);
2017 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET)) {
2018 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2019 rc = -ETIMEDOUT;
2020 goto unmap_in;
2021 }
2022 }
2023
2024 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
2025 "%s - complete\n", ioc->name, __func__));
2026
2027 if (!(ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID)) {
2028 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
2029 "%s - no reply\n", ioc->name, __func__));
2030 rc = -ENXIO;
2031 goto unmap_in;
2032 }
2033
2034 mpi_reply = ioc->transport_cmds.reply;
2035
2036 dtransportprintk(ioc,
2037 pr_info(MPT3SAS_FMT "%s - reply data transfer size(%d)\n",
2038 ioc->name, __func__,
2039 le16_to_cpu(mpi_reply->ResponseDataLength)));
2040
2041 memcpy(job->reply, mpi_reply, sizeof(*mpi_reply));
2042 job->reply_len = sizeof(*mpi_reply);
2043 reslen = le16_to_cpu(mpi_reply->ResponseDataLength);
2044
2045 if (addr_in) {
2046 sg_copy_to_buffer(job->reply_payload.sg_list,
2047 job->reply_payload.sg_cnt, addr_in,
2048 job->reply_payload.payload_len);
2049 }
2050
2051 rc = 0;
2052 unmap_in:
2053 _transport_unmap_smp_buffer(&ioc->pdev->dev, &job->reply_payload,
2054 dma_addr_in, addr_in);
2055 unmap_out:
2056 _transport_unmap_smp_buffer(&ioc->pdev->dev, &job->request_payload,
2057 dma_addr_out, addr_out);
2058 out:
2059 ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
2060 mutex_unlock(&ioc->transport_cmds.mutex);
2061 job_done:
2062 bsg_job_done(job, rc, reslen);
2063 }
2064
2065 struct sas_function_template mpt3sas_transport_functions = {
2066 .get_linkerrors = _transport_get_linkerrors,
2067 .get_enclosure_identifier = _transport_get_enclosure_identifier,
2068 .get_bay_identifier = _transport_get_bay_identifier,
2069 .phy_reset = _transport_phy_reset,
2070 .phy_enable = _transport_phy_enable,
2071 .set_phy_speed = _transport_phy_speed,
2072 .smp_handler = _transport_smp_handler,
2073 };
2074
2075 struct scsi_transport_template *mpt3sas_transport_template;
Linux with added FPC-III support