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_get_port_id_by_sas_phy - get zone's port id that Phy belong to
65 * @phy: sas_phy object
66 *
67 * Return Port number
68 */
69 static inline u8
_transport_get_port_id_by_sas_phy(struct sas_phy * phy)70 _transport_get_port_id_by_sas_phy(struct sas_phy *phy)
71 {
72 u8 port_id = 0xFF;
73 struct hba_port *port = phy->hostdata;
74
75 if (port)
76 port_id = port->port_id;
77
78 return port_id;
79 }
80
81 /**
82 * _transport_sas_node_find_by_sas_address - sas node search
83 * @ioc: per adapter object
84 * @sas_address: sas address of expander or sas host
85 * @port: hba port entry
86 * Context: Calling function should acquire ioc->sas_node_lock.
87 *
88 * Search for either hba phys or expander device based on handle, then returns
89 * the sas_node object.
90 */
91 static struct _sas_node *
_transport_sas_node_find_by_sas_address(struct MPT3SAS_ADAPTER * ioc,u64 sas_address,struct hba_port * port)92 _transport_sas_node_find_by_sas_address(struct MPT3SAS_ADAPTER *ioc,
93 u64 sas_address, struct hba_port *port)
94 {
95 if (ioc->sas_hba.sas_address == sas_address)
96 return &ioc->sas_hba;
97 else
98 return mpt3sas_scsih_expander_find_by_sas_address(ioc,
99 sas_address, port);
100 }
101
102 /**
103 * _transport_get_port_id_by_rphy - Get Port number from rphy object
104 * @ioc: per adapter object
105 * @rphy: sas_rphy object
106 *
107 * Returns Port number.
108 */
109 static u8
_transport_get_port_id_by_rphy(struct MPT3SAS_ADAPTER * ioc,struct sas_rphy * rphy)110 _transport_get_port_id_by_rphy(struct MPT3SAS_ADAPTER *ioc,
111 struct sas_rphy *rphy)
112 {
113 struct _sas_node *sas_expander;
114 struct _sas_device *sas_device;
115 unsigned long flags;
116 u8 port_id = 0xFF;
117
118 if (!rphy)
119 return port_id;
120
121 if (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE ||
122 rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE) {
123 spin_lock_irqsave(&ioc->sas_node_lock, flags);
124 list_for_each_entry(sas_expander,
125 &ioc->sas_expander_list, list) {
126 if (sas_expander->rphy == rphy) {
127 port_id = sas_expander->port->port_id;
128 break;
129 }
130 }
131 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
132 } else if (rphy->identify.device_type == SAS_END_DEVICE) {
133 spin_lock_irqsave(&ioc->sas_device_lock, flags);
134 sas_device = __mpt3sas_get_sdev_by_rphy(ioc, rphy);
135 if (sas_device) {
136 port_id = sas_device->port->port_id;
137 sas_device_put(sas_device);
138 }
139 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
140 }
141
142 return port_id;
143 }
144
145 /**
146 * _transport_convert_phy_link_rate -
147 * @link_rate: link rate returned from mpt firmware
148 *
149 * Convert link_rate from mpi fusion into sas_transport form.
150 */
151 static enum sas_linkrate
_transport_convert_phy_link_rate(u8 link_rate)152 _transport_convert_phy_link_rate(u8 link_rate)
153 {
154 enum sas_linkrate rc;
155
156 switch (link_rate) {
157 case MPI2_SAS_NEG_LINK_RATE_1_5:
158 rc = SAS_LINK_RATE_1_5_GBPS;
159 break;
160 case MPI2_SAS_NEG_LINK_RATE_3_0:
161 rc = SAS_LINK_RATE_3_0_GBPS;
162 break;
163 case MPI2_SAS_NEG_LINK_RATE_6_0:
164 rc = SAS_LINK_RATE_6_0_GBPS;
165 break;
166 case MPI25_SAS_NEG_LINK_RATE_12_0:
167 rc = SAS_LINK_RATE_12_0_GBPS;
168 break;
169 case MPI2_SAS_NEG_LINK_RATE_PHY_DISABLED:
170 rc = SAS_PHY_DISABLED;
171 break;
172 case MPI2_SAS_NEG_LINK_RATE_NEGOTIATION_FAILED:
173 rc = SAS_LINK_RATE_FAILED;
174 break;
175 case MPI2_SAS_NEG_LINK_RATE_PORT_SELECTOR:
176 rc = SAS_SATA_PORT_SELECTOR;
177 break;
178 case MPI2_SAS_NEG_LINK_RATE_SMP_RESET_IN_PROGRESS:
179 rc = SAS_PHY_RESET_IN_PROGRESS;
180 break;
181
182 default:
183 case MPI2_SAS_NEG_LINK_RATE_SATA_OOB_COMPLETE:
184 case MPI2_SAS_NEG_LINK_RATE_UNKNOWN_LINK_RATE:
185 rc = SAS_LINK_RATE_UNKNOWN;
186 break;
187 }
188 return rc;
189 }
190
191 /**
192 * _transport_set_identify - set identify for phys and end devices
193 * @ioc: per adapter object
194 * @handle: device handle
195 * @identify: sas identify info
196 *
197 * Populates sas identify info.
198 *
199 * Return: 0 for success, non-zero for failure.
200 */
201 static int
_transport_set_identify(struct MPT3SAS_ADAPTER * ioc,u16 handle,struct sas_identify * identify)202 _transport_set_identify(struct MPT3SAS_ADAPTER *ioc, u16 handle,
203 struct sas_identify *identify)
204 {
205 Mpi2SasDevicePage0_t sas_device_pg0;
206 Mpi2ConfigReply_t mpi_reply;
207 u32 device_info;
208 u32 ioc_status;
209
210 if (ioc->shost_recovery || ioc->pci_error_recovery) {
211 ioc_info(ioc, "%s: host reset in progress!\n", __func__);
212 return -EFAULT;
213 }
214
215 if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
216 MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
217 ioc_err(ioc, "failure at %s:%d/%s()!\n",
218 __FILE__, __LINE__, __func__);
219 return -ENXIO;
220 }
221
222 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
223 MPI2_IOCSTATUS_MASK;
224 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
225 ioc_err(ioc, "handle(0x%04x), ioc_status(0x%04x) failure at %s:%d/%s()!\n",
226 handle, ioc_status, __FILE__, __LINE__, __func__);
227 return -EIO;
228 }
229
230 memset(identify, 0, sizeof(struct sas_identify));
231 device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
232
233 /* sas_address */
234 identify->sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
235
236 /* phy number of the parent device this device is linked to */
237 identify->phy_identifier = sas_device_pg0.PhyNum;
238
239 /* device_type */
240 switch (device_info & MPI2_SAS_DEVICE_INFO_MASK_DEVICE_TYPE) {
241 case MPI2_SAS_DEVICE_INFO_NO_DEVICE:
242 identify->device_type = SAS_PHY_UNUSED;
243 break;
244 case MPI2_SAS_DEVICE_INFO_END_DEVICE:
245 identify->device_type = SAS_END_DEVICE;
246 break;
247 case MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER:
248 identify->device_type = SAS_EDGE_EXPANDER_DEVICE;
249 break;
250 case MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER:
251 identify->device_type = SAS_FANOUT_EXPANDER_DEVICE;
252 break;
253 }
254
255 /* initiator_port_protocols */
256 if (device_info & MPI2_SAS_DEVICE_INFO_SSP_INITIATOR)
257 identify->initiator_port_protocols |= SAS_PROTOCOL_SSP;
258 if (device_info & MPI2_SAS_DEVICE_INFO_STP_INITIATOR)
259 identify->initiator_port_protocols |= SAS_PROTOCOL_STP;
260 if (device_info & MPI2_SAS_DEVICE_INFO_SMP_INITIATOR)
261 identify->initiator_port_protocols |= SAS_PROTOCOL_SMP;
262 if (device_info & MPI2_SAS_DEVICE_INFO_SATA_HOST)
263 identify->initiator_port_protocols |= SAS_PROTOCOL_SATA;
264
265 /* target_port_protocols */
266 if (device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET)
267 identify->target_port_protocols |= SAS_PROTOCOL_SSP;
268 if (device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET)
269 identify->target_port_protocols |= SAS_PROTOCOL_STP;
270 if (device_info & MPI2_SAS_DEVICE_INFO_SMP_TARGET)
271 identify->target_port_protocols |= SAS_PROTOCOL_SMP;
272 if (device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
273 identify->target_port_protocols |= SAS_PROTOCOL_SATA;
274
275 return 0;
276 }
277
278 /**
279 * mpt3sas_transport_done - internal transport layer callback handler.
280 * @ioc: per adapter object
281 * @smid: system request message index
282 * @msix_index: MSIX table index supplied by the OS
283 * @reply: reply message frame(lower 32bit addr)
284 *
285 * Callback handler when sending internal generated transport cmds.
286 * The callback index passed is `ioc->transport_cb_idx`
287 *
288 * Return: 1 meaning mf should be freed from _base_interrupt
289 * 0 means the mf is freed from this function.
290 */
291 u8
mpt3sas_transport_done(struct MPT3SAS_ADAPTER * ioc,u16 smid,u8 msix_index,u32 reply)292 mpt3sas_transport_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
293 u32 reply)
294 {
295 MPI2DefaultReply_t *mpi_reply;
296
297 mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
298 if (ioc->transport_cmds.status == MPT3_CMD_NOT_USED)
299 return 1;
300 if (ioc->transport_cmds.smid != smid)
301 return 1;
302 ioc->transport_cmds.status |= MPT3_CMD_COMPLETE;
303 if (mpi_reply) {
304 memcpy(ioc->transport_cmds.reply, mpi_reply,
305 mpi_reply->MsgLength*4);
306 ioc->transport_cmds.status |= MPT3_CMD_REPLY_VALID;
307 }
308 ioc->transport_cmds.status &= ~MPT3_CMD_PENDING;
309 complete(&ioc->transport_cmds.done);
310 return 1;
311 }
312
313 /* report manufacture request structure */
314 struct rep_manu_request {
315 u8 smp_frame_type;
316 u8 function;
317 u8 reserved;
318 u8 request_length;
319 };
320
321 /* report manufacture reply structure */
322 struct rep_manu_reply {
323 u8 smp_frame_type; /* 0x41 */
324 u8 function; /* 0x01 */
325 u8 function_result;
326 u8 response_length;
327 u16 expander_change_count;
328 u8 reserved0[2];
329 u8 sas_format;
330 u8 reserved2[3];
331 u8 vendor_id[SAS_EXPANDER_VENDOR_ID_LEN];
332 u8 product_id[SAS_EXPANDER_PRODUCT_ID_LEN];
333 u8 product_rev[SAS_EXPANDER_PRODUCT_REV_LEN];
334 u8 component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN];
335 u16 component_id;
336 u8 component_revision_id;
337 u8 reserved3;
338 u8 vendor_specific[8];
339 };
340
341 /**
342 * _transport_expander_report_manufacture - obtain SMP report_manufacture
343 * @ioc: per adapter object
344 * @sas_address: expander sas address
345 * @edev: the sas_expander_device object
346 * @port_id: Port ID number
347 *
348 * Fills in the sas_expander_device object when SMP port is created.
349 *
350 * Return: 0 for success, non-zero for failure.
351 */
352 static int
_transport_expander_report_manufacture(struct MPT3SAS_ADAPTER * ioc,u64 sas_address,struct sas_expander_device * edev,u8 port_id)353 _transport_expander_report_manufacture(struct MPT3SAS_ADAPTER *ioc,
354 u64 sas_address, struct sas_expander_device *edev, u8 port_id)
355 {
356 Mpi2SmpPassthroughRequest_t *mpi_request;
357 Mpi2SmpPassthroughReply_t *mpi_reply;
358 struct rep_manu_reply *manufacture_reply;
359 struct rep_manu_request *manufacture_request;
360 int rc;
361 u16 smid;
362 void *psge;
363 u8 issue_reset = 0;
364 void *data_out = NULL;
365 dma_addr_t data_out_dma;
366 dma_addr_t data_in_dma;
367 size_t data_in_sz;
368 size_t data_out_sz;
369
370 if (ioc->shost_recovery || ioc->pci_error_recovery) {
371 ioc_info(ioc, "%s: host reset in progress!\n", __func__);
372 return -EFAULT;
373 }
374
375 mutex_lock(&ioc->transport_cmds.mutex);
376
377 if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
378 ioc_err(ioc, "%s: transport_cmds in use\n", __func__);
379 rc = -EAGAIN;
380 goto out;
381 }
382 ioc->transport_cmds.status = MPT3_CMD_PENDING;
383
384 rc = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT);
385 if (rc)
386 goto out;
387
388 smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
389 if (!smid) {
390 ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
391 rc = -EAGAIN;
392 goto out;
393 }
394
395 rc = 0;
396 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
397 ioc->transport_cmds.smid = smid;
398
399 data_out_sz = sizeof(struct rep_manu_request);
400 data_in_sz = sizeof(struct rep_manu_reply);
401 data_out = dma_alloc_coherent(&ioc->pdev->dev, data_out_sz + data_in_sz,
402 &data_out_dma, GFP_KERNEL);
403 if (!data_out) {
404 pr_err("failure at %s:%d/%s()!\n", __FILE__,
405 __LINE__, __func__);
406 rc = -ENOMEM;
407 mpt3sas_base_free_smid(ioc, smid);
408 goto out;
409 }
410
411 data_in_dma = data_out_dma + sizeof(struct rep_manu_request);
412
413 manufacture_request = data_out;
414 manufacture_request->smp_frame_type = 0x40;
415 manufacture_request->function = 1;
416 manufacture_request->reserved = 0;
417 manufacture_request->request_length = 0;
418
419 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
420 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
421 mpi_request->PhysicalPort = port_id;
422 mpi_request->SASAddress = cpu_to_le64(sas_address);
423 mpi_request->RequestDataLength = cpu_to_le16(data_out_sz);
424 psge = &mpi_request->SGL;
425
426 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
427 data_in_sz);
428
429 dtransportprintk(ioc,
430 ioc_info(ioc, "report_manufacture - send to sas_addr(0x%016llx)\n",
431 (u64)sas_address));
432 init_completion(&ioc->transport_cmds.done);
433 ioc->put_smid_default(ioc, smid);
434 wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
435
436 if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
437 ioc_err(ioc, "%s: timeout\n", __func__);
438 _debug_dump_mf(mpi_request,
439 sizeof(Mpi2SmpPassthroughRequest_t)/4);
440 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
441 issue_reset = 1;
442 goto issue_host_reset;
443 }
444
445 dtransportprintk(ioc, ioc_info(ioc, "report_manufacture - complete\n"));
446
447 if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
448 u8 *tmp;
449
450 mpi_reply = ioc->transport_cmds.reply;
451
452 dtransportprintk(ioc,
453 ioc_info(ioc, "report_manufacture - reply data transfer size(%d)\n",
454 le16_to_cpu(mpi_reply->ResponseDataLength)));
455
456 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
457 sizeof(struct rep_manu_reply))
458 goto out;
459
460 manufacture_reply = data_out + sizeof(struct rep_manu_request);
461 memtostr(edev->vendor_id, manufacture_reply->vendor_id);
462 memtostr(edev->product_id, manufacture_reply->product_id);
463 memtostr(edev->product_rev, manufacture_reply->product_rev);
464 edev->level = manufacture_reply->sas_format & 1;
465 if (edev->level) {
466 memtostr(edev->component_vendor_id,
467 manufacture_reply->component_vendor_id);
468 tmp = (u8 *)&manufacture_reply->component_id;
469 edev->component_id = tmp[0] << 8 | tmp[1];
470 edev->component_revision_id =
471 manufacture_reply->component_revision_id;
472 }
473 } else
474 dtransportprintk(ioc,
475 ioc_info(ioc, "report_manufacture - no reply\n"));
476
477 issue_host_reset:
478 if (issue_reset)
479 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
480 out:
481 ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
482 if (data_out)
483 dma_free_coherent(&ioc->pdev->dev, data_out_sz + data_in_sz,
484 data_out, data_out_dma);
485
486 mutex_unlock(&ioc->transport_cmds.mutex);
487 return rc;
488 }
489
490
491 /**
492 * _transport_delete_port - helper function to removing a port
493 * @ioc: per adapter object
494 * @mpt3sas_port: mpt3sas per port object
495 */
496 static void
_transport_delete_port(struct MPT3SAS_ADAPTER * ioc,struct _sas_port * mpt3sas_port)497 _transport_delete_port(struct MPT3SAS_ADAPTER *ioc,
498 struct _sas_port *mpt3sas_port)
499 {
500 u64 sas_address = mpt3sas_port->remote_identify.sas_address;
501 struct hba_port *port = mpt3sas_port->hba_port;
502 enum sas_device_type device_type =
503 mpt3sas_port->remote_identify.device_type;
504
505 dev_printk(KERN_INFO, &mpt3sas_port->port->dev,
506 "remove: sas_addr(0x%016llx)\n",
507 (unsigned long long) sas_address);
508
509 ioc->logging_level |= MPT_DEBUG_TRANSPORT;
510 if (device_type == SAS_END_DEVICE)
511 mpt3sas_device_remove_by_sas_address(ioc,
512 sas_address, port);
513 else if (device_type == SAS_EDGE_EXPANDER_DEVICE ||
514 device_type == SAS_FANOUT_EXPANDER_DEVICE)
515 mpt3sas_expander_remove(ioc, sas_address, port);
516 ioc->logging_level &= ~MPT_DEBUG_TRANSPORT;
517 }
518
519 /**
520 * _transport_delete_phy - helper function to removing single phy from port
521 * @ioc: per adapter object
522 * @mpt3sas_port: mpt3sas per port object
523 * @mpt3sas_phy: mpt3sas per phy object
524 */
525 static void
_transport_delete_phy(struct MPT3SAS_ADAPTER * ioc,struct _sas_port * mpt3sas_port,struct _sas_phy * mpt3sas_phy)526 _transport_delete_phy(struct MPT3SAS_ADAPTER *ioc,
527 struct _sas_port *mpt3sas_port, struct _sas_phy *mpt3sas_phy)
528 {
529 u64 sas_address = mpt3sas_port->remote_identify.sas_address;
530
531 dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
532 "remove: sas_addr(0x%016llx), phy(%d)\n",
533 (unsigned long long) sas_address, mpt3sas_phy->phy_id);
534
535 list_del(&mpt3sas_phy->port_siblings);
536 mpt3sas_port->num_phys--;
537 sas_port_delete_phy(mpt3sas_port->port, mpt3sas_phy->phy);
538 mpt3sas_phy->phy_belongs_to_port = 0;
539 }
540
541 /**
542 * _transport_add_phy - helper function to adding single phy to port
543 * @ioc: per adapter object
544 * @mpt3sas_port: mpt3sas per port object
545 * @mpt3sas_phy: mpt3sas per phy object
546 */
547 static void
_transport_add_phy(struct MPT3SAS_ADAPTER * ioc,struct _sas_port * mpt3sas_port,struct _sas_phy * mpt3sas_phy)548 _transport_add_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_port *mpt3sas_port,
549 struct _sas_phy *mpt3sas_phy)
550 {
551 u64 sas_address = mpt3sas_port->remote_identify.sas_address;
552
553 dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
554 "add: sas_addr(0x%016llx), phy(%d)\n", (unsigned long long)
555 sas_address, mpt3sas_phy->phy_id);
556
557 list_add_tail(&mpt3sas_phy->port_siblings, &mpt3sas_port->phy_list);
558 mpt3sas_port->num_phys++;
559 sas_port_add_phy(mpt3sas_port->port, mpt3sas_phy->phy);
560 mpt3sas_phy->phy_belongs_to_port = 1;
561 }
562
563 /**
564 * mpt3sas_transport_add_phy_to_an_existing_port - adding new phy to 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 * @sas_address: sas address of device/expander were phy needs to be added to
569 * @port: hba port entry
570 */
571 void
mpt3sas_transport_add_phy_to_an_existing_port(struct MPT3SAS_ADAPTER * ioc,struct _sas_node * sas_node,struct _sas_phy * mpt3sas_phy,u64 sas_address,struct hba_port * port)572 mpt3sas_transport_add_phy_to_an_existing_port(struct MPT3SAS_ADAPTER *ioc,
573 struct _sas_node *sas_node, struct _sas_phy *mpt3sas_phy,
574 u64 sas_address, struct hba_port *port)
575 {
576 struct _sas_port *mpt3sas_port;
577 struct _sas_phy *phy_srch;
578
579 if (mpt3sas_phy->phy_belongs_to_port == 1)
580 return;
581
582 if (!port)
583 return;
584
585 list_for_each_entry(mpt3sas_port, &sas_node->sas_port_list,
586 port_list) {
587 if (mpt3sas_port->remote_identify.sas_address !=
588 sas_address)
589 continue;
590 if (mpt3sas_port->hba_port != port)
591 continue;
592 list_for_each_entry(phy_srch, &mpt3sas_port->phy_list,
593 port_siblings) {
594 if (phy_srch == mpt3sas_phy)
595 return;
596 }
597 _transport_add_phy(ioc, mpt3sas_port, mpt3sas_phy);
598 return;
599 }
600
601 }
602
603 /**
604 * mpt3sas_transport_del_phy_from_an_existing_port - delete phy from existing port
605 * @ioc: per adapter object
606 * @sas_node: sas node object (either expander or sas host)
607 * @mpt3sas_phy: mpt3sas per phy object
608 */
609 void
mpt3sas_transport_del_phy_from_an_existing_port(struct MPT3SAS_ADAPTER * ioc,struct _sas_node * sas_node,struct _sas_phy * mpt3sas_phy)610 mpt3sas_transport_del_phy_from_an_existing_port(struct MPT3SAS_ADAPTER *ioc,
611 struct _sas_node *sas_node, struct _sas_phy *mpt3sas_phy)
612 {
613 struct _sas_port *mpt3sas_port, *next;
614 struct _sas_phy *phy_srch;
615
616 if (mpt3sas_phy->phy_belongs_to_port == 0)
617 return;
618
619 list_for_each_entry_safe(mpt3sas_port, next, &sas_node->sas_port_list,
620 port_list) {
621 list_for_each_entry(phy_srch, &mpt3sas_port->phy_list,
622 port_siblings) {
623 if (phy_srch != mpt3sas_phy)
624 continue;
625
626 /*
627 * Don't delete port during host reset,
628 * just delete phy.
629 */
630 if (mpt3sas_port->num_phys == 1 && !ioc->shost_recovery)
631 _transport_delete_port(ioc, mpt3sas_port);
632 else
633 _transport_delete_phy(ioc, mpt3sas_port,
634 mpt3sas_phy);
635 return;
636 }
637 }
638 }
639
640 /**
641 * _transport_sanity_check - sanity check when adding a new port
642 * @ioc: per adapter object
643 * @sas_node: sas node object (either expander or sas host)
644 * @sas_address: sas address of device being added
645 * @port: hba port entry
646 *
647 * See the explanation above from _transport_delete_duplicate_port
648 */
649 static void
_transport_sanity_check(struct MPT3SAS_ADAPTER * ioc,struct _sas_node * sas_node,u64 sas_address,struct hba_port * port)650 _transport_sanity_check(struct MPT3SAS_ADAPTER *ioc, struct _sas_node *sas_node,
651 u64 sas_address, struct hba_port *port)
652 {
653 int i;
654
655 for (i = 0; i < sas_node->num_phys; i++) {
656 if (sas_node->phy[i].remote_identify.sas_address != sas_address)
657 continue;
658 if (sas_node->phy[i].port != port)
659 continue;
660 if (sas_node->phy[i].phy_belongs_to_port == 1)
661 mpt3sas_transport_del_phy_from_an_existing_port(ioc,
662 sas_node, &sas_node->phy[i]);
663 }
664 }
665
666 /**
667 * mpt3sas_transport_port_add - insert port to the list
668 * @ioc: per adapter object
669 * @handle: handle of attached device
670 * @sas_address: sas address of parent expander or sas host
671 * @hba_port: hba port entry
672 * Context: This function will acquire ioc->sas_node_lock.
673 *
674 * Adding new port object to the sas_node->sas_port_list.
675 *
676 * Return: mpt3sas_port.
677 */
678 struct _sas_port *
mpt3sas_transport_port_add(struct MPT3SAS_ADAPTER * ioc,u16 handle,u64 sas_address,struct hba_port * hba_port)679 mpt3sas_transport_port_add(struct MPT3SAS_ADAPTER *ioc, u16 handle,
680 u64 sas_address, struct hba_port *hba_port)
681 {
682 struct _sas_phy *mpt3sas_phy, *next;
683 struct _sas_port *mpt3sas_port;
684 unsigned long flags;
685 struct _sas_node *sas_node;
686 struct sas_rphy *rphy;
687 struct _sas_device *sas_device = NULL;
688 int i;
689 struct sas_port *port;
690 struct virtual_phy *vphy = NULL;
691
692 if (!hba_port) {
693 ioc_err(ioc, "failure at %s:%d/%s()!\n",
694 __FILE__, __LINE__, __func__);
695 return NULL;
696 }
697
698 mpt3sas_port = kzalloc(sizeof(struct _sas_port),
699 GFP_KERNEL);
700 if (!mpt3sas_port) {
701 ioc_err(ioc, "failure at %s:%d/%s()!\n",
702 __FILE__, __LINE__, __func__);
703 return NULL;
704 }
705
706 INIT_LIST_HEAD(&mpt3sas_port->port_list);
707 INIT_LIST_HEAD(&mpt3sas_port->phy_list);
708 spin_lock_irqsave(&ioc->sas_node_lock, flags);
709 sas_node = _transport_sas_node_find_by_sas_address(ioc,
710 sas_address, hba_port);
711 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
712
713 if (!sas_node) {
714 ioc_err(ioc, "%s: Could not find parent sas_address(0x%016llx)!\n",
715 __func__, (u64)sas_address);
716 goto out_fail;
717 }
718
719 if ((_transport_set_identify(ioc, handle,
720 &mpt3sas_port->remote_identify))) {
721 ioc_err(ioc, "failure at %s:%d/%s()!\n",
722 __FILE__, __LINE__, __func__);
723 goto out_fail;
724 }
725
726 if (mpt3sas_port->remote_identify.device_type == SAS_PHY_UNUSED) {
727 ioc_err(ioc, "failure at %s:%d/%s()!\n",
728 __FILE__, __LINE__, __func__);
729 goto out_fail;
730 }
731
732 mpt3sas_port->hba_port = hba_port;
733 _transport_sanity_check(ioc, sas_node,
734 mpt3sas_port->remote_identify.sas_address, hba_port);
735
736 for (i = 0; i < sas_node->num_phys; i++) {
737 if (sas_node->phy[i].remote_identify.sas_address !=
738 mpt3sas_port->remote_identify.sas_address)
739 continue;
740 if (sas_node->phy[i].port != hba_port)
741 continue;
742 list_add_tail(&sas_node->phy[i].port_siblings,
743 &mpt3sas_port->phy_list);
744 mpt3sas_port->num_phys++;
745 if (sas_node->handle <= ioc->sas_hba.num_phys) {
746 if (!sas_node->phy[i].hba_vphy) {
747 hba_port->phy_mask |= (1 << i);
748 continue;
749 }
750
751 vphy = mpt3sas_get_vphy_by_phy(ioc, hba_port, i);
752 if (!vphy) {
753 ioc_err(ioc, "failure at %s:%d/%s()!\n",
754 __FILE__, __LINE__, __func__);
755 goto out_fail;
756 }
757 }
758 }
759
760 if (!mpt3sas_port->num_phys) {
761 ioc_err(ioc, "failure at %s:%d/%s()!\n",
762 __FILE__, __LINE__, __func__);
763 goto out_fail;
764 }
765
766 if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) {
767 sas_device = mpt3sas_get_sdev_by_addr(ioc,
768 mpt3sas_port->remote_identify.sas_address,
769 mpt3sas_port->hba_port);
770 if (!sas_device) {
771 ioc_err(ioc, "failure at %s:%d/%s()!\n",
772 __FILE__, __LINE__, __func__);
773 goto out_fail;
774 }
775 sas_device->pend_sas_rphy_add = 1;
776 }
777
778 if (!sas_node->parent_dev) {
779 ioc_err(ioc, "failure at %s:%d/%s()!\n",
780 __FILE__, __LINE__, __func__);
781 goto out_fail;
782 }
783 port = sas_port_alloc_num(sas_node->parent_dev);
784 if (!port || (sas_port_add(port))) {
785 ioc_err(ioc, "failure at %s:%d/%s()!\n",
786 __FILE__, __LINE__, __func__);
787 goto out_fail;
788 }
789
790 list_for_each_entry(mpt3sas_phy, &mpt3sas_port->phy_list,
791 port_siblings) {
792 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
793 dev_printk(KERN_INFO, &port->dev,
794 "add: handle(0x%04x), sas_addr(0x%016llx), phy(%d)\n",
795 handle, (unsigned long long)
796 mpt3sas_port->remote_identify.sas_address,
797 mpt3sas_phy->phy_id);
798 sas_port_add_phy(port, mpt3sas_phy->phy);
799 mpt3sas_phy->phy_belongs_to_port = 1;
800 mpt3sas_phy->port = hba_port;
801 }
802
803 mpt3sas_port->port = port;
804 if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) {
805 rphy = sas_end_device_alloc(port);
806 sas_device->rphy = rphy;
807 if (sas_node->handle <= ioc->sas_hba.num_phys) {
808 if (!vphy)
809 hba_port->sas_address =
810 sas_device->sas_address;
811 else
812 vphy->sas_address =
813 sas_device->sas_address;
814 }
815 } else {
816 rphy = sas_expander_alloc(port,
817 mpt3sas_port->remote_identify.device_type);
818 if (sas_node->handle <= ioc->sas_hba.num_phys)
819 hba_port->sas_address =
820 mpt3sas_port->remote_identify.sas_address;
821 }
822
823 if (!rphy) {
824 ioc_err(ioc, "failure at %s:%d/%s()!\n",
825 __FILE__, __LINE__, __func__);
826 goto out_delete_port;
827 }
828
829 rphy->identify = mpt3sas_port->remote_identify;
830
831 if ((sas_rphy_add(rphy))) {
832 ioc_err(ioc, "failure at %s:%d/%s()!\n",
833 __FILE__, __LINE__, __func__);
834 sas_rphy_free(rphy);
835 rphy = NULL;
836 goto out_delete_port;
837 }
838
839 if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) {
840 sas_device->pend_sas_rphy_add = 0;
841 sas_device_put(sas_device);
842 }
843
844 dev_info(&rphy->dev,
845 "add: handle(0x%04x), sas_addr(0x%016llx)\n", handle,
846 (unsigned long long)mpt3sas_port->remote_identify.sas_address);
847
848 mpt3sas_port->rphy = rphy;
849 spin_lock_irqsave(&ioc->sas_node_lock, flags);
850 list_add_tail(&mpt3sas_port->port_list, &sas_node->sas_port_list);
851 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
852
853 /* fill in report manufacture */
854 if (mpt3sas_port->remote_identify.device_type ==
855 MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
856 mpt3sas_port->remote_identify.device_type ==
857 MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
858 _transport_expander_report_manufacture(ioc,
859 mpt3sas_port->remote_identify.sas_address,
860 rphy_to_expander_device(rphy), hba_port->port_id);
861 return mpt3sas_port;
862
863 out_delete_port:
864 sas_port_delete(port);
865
866 out_fail:
867 list_for_each_entry_safe(mpt3sas_phy, next, &mpt3sas_port->phy_list,
868 port_siblings)
869 list_del(&mpt3sas_phy->port_siblings);
870 kfree(mpt3sas_port);
871 return NULL;
872 }
873
874 /**
875 * mpt3sas_transport_port_remove - remove port from the list
876 * @ioc: per adapter object
877 * @sas_address: sas address of attached device
878 * @sas_address_parent: sas address of parent expander or sas host
879 * @port: hba port entry
880 * Context: This function will acquire ioc->sas_node_lock.
881 *
882 * Removing object and freeing associated memory from the
883 * ioc->sas_port_list.
884 */
885 void
mpt3sas_transport_port_remove(struct MPT3SAS_ADAPTER * ioc,u64 sas_address,u64 sas_address_parent,struct hba_port * port)886 mpt3sas_transport_port_remove(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
887 u64 sas_address_parent, struct hba_port *port)
888 {
889 int i;
890 unsigned long flags;
891 struct _sas_port *mpt3sas_port, *next;
892 struct _sas_node *sas_node;
893 u8 found = 0;
894 struct _sas_phy *mpt3sas_phy, *next_phy;
895 struct hba_port *hba_port_next, *hba_port = NULL;
896 struct virtual_phy *vphy, *vphy_next = NULL;
897
898 if (!port)
899 return;
900
901 spin_lock_irqsave(&ioc->sas_node_lock, flags);
902 sas_node = _transport_sas_node_find_by_sas_address(ioc,
903 sas_address_parent, port);
904 if (!sas_node) {
905 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
906 return;
907 }
908 list_for_each_entry_safe(mpt3sas_port, next, &sas_node->sas_port_list,
909 port_list) {
910 if (mpt3sas_port->remote_identify.sas_address != sas_address)
911 continue;
912 if (mpt3sas_port->hba_port != port)
913 continue;
914 found = 1;
915 list_del(&mpt3sas_port->port_list);
916 goto out;
917 }
918 out:
919 if (!found) {
920 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
921 return;
922 }
923
924 if (sas_node->handle <= ioc->sas_hba.num_phys &&
925 (ioc->multipath_on_hba)) {
926 if (port->vphys_mask) {
927 list_for_each_entry_safe(vphy, vphy_next,
928 &port->vphys_list, list) {
929 if (vphy->sas_address != sas_address)
930 continue;
931 ioc_info(ioc,
932 "remove vphy entry: %p of port:%p,from %d port's vphys list\n",
933 vphy, port, port->port_id);
934 port->vphys_mask &= ~vphy->phy_mask;
935 list_del(&vphy->list);
936 kfree(vphy);
937 }
938 }
939
940 list_for_each_entry_safe(hba_port, hba_port_next,
941 &ioc->port_table_list, list) {
942 if (hba_port != port)
943 continue;
944 /*
945 * Delete hba_port object if
946 * - hba_port object's sas address matches with current
947 * removed device's sas address and no vphy's
948 * associated with it.
949 * - Current removed device is a vSES device and
950 * none of the other direct attached device have
951 * this vSES device's port number (hence hba_port
952 * object sas_address field will be zero).
953 */
954 if ((hba_port->sas_address == sas_address ||
955 !hba_port->sas_address) && !hba_port->vphys_mask) {
956 ioc_info(ioc,
957 "remove hba_port entry: %p port: %d from hba_port list\n",
958 hba_port, hba_port->port_id);
959 list_del(&hba_port->list);
960 kfree(hba_port);
961 } else if (hba_port->sas_address == sas_address &&
962 hba_port->vphys_mask) {
963 /*
964 * Current removed device is a non vSES device
965 * and a vSES device has the same port number
966 * as of current device's port number. Hence
967 * only clear the sas_address filed, don't
968 * delete the hba_port object.
969 */
970 ioc_info(ioc,
971 "clearing sas_address from hba_port entry: %p port: %d from hba_port list\n",
972 hba_port, hba_port->port_id);
973 port->sas_address = 0;
974 }
975 break;
976 }
977 }
978
979 for (i = 0; i < sas_node->num_phys; i++) {
980 if (sas_node->phy[i].remote_identify.sas_address == sas_address)
981 memset(&sas_node->phy[i].remote_identify, 0 ,
982 sizeof(struct sas_identify));
983 }
984
985 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
986
987 list_for_each_entry_safe(mpt3sas_phy, next_phy,
988 &mpt3sas_port->phy_list, port_siblings) {
989 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
990 dev_printk(KERN_INFO, &mpt3sas_port->port->dev,
991 "remove: sas_addr(0x%016llx), phy(%d)\n",
992 (unsigned long long)
993 mpt3sas_port->remote_identify.sas_address,
994 mpt3sas_phy->phy_id);
995 mpt3sas_phy->phy_belongs_to_port = 0;
996 if (!ioc->remove_host)
997 sas_port_delete_phy(mpt3sas_port->port,
998 mpt3sas_phy->phy);
999 list_del(&mpt3sas_phy->port_siblings);
1000 }
1001 if (!ioc->remove_host)
1002 sas_port_delete(mpt3sas_port->port);
1003 ioc_info(ioc, "%s: removed: sas_addr(0x%016llx)\n",
1004 __func__, (unsigned long long)sas_address);
1005 kfree(mpt3sas_port);
1006 }
1007
1008 /**
1009 * mpt3sas_transport_add_host_phy - report sas_host phy to transport
1010 * @ioc: per adapter object
1011 * @mpt3sas_phy: mpt3sas per phy object
1012 * @phy_pg0: sas phy page 0
1013 * @parent_dev: parent device class object
1014 *
1015 * Return: 0 for success, non-zero for failure.
1016 */
1017 int
mpt3sas_transport_add_host_phy(struct MPT3SAS_ADAPTER * ioc,struct _sas_phy * mpt3sas_phy,Mpi2SasPhyPage0_t phy_pg0,struct device * parent_dev)1018 mpt3sas_transport_add_host_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
1019 *mpt3sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
1020 {
1021 struct sas_phy *phy;
1022 int phy_index = mpt3sas_phy->phy_id;
1023
1024
1025 INIT_LIST_HEAD(&mpt3sas_phy->port_siblings);
1026 phy = sas_phy_alloc(parent_dev, phy_index);
1027 if (!phy) {
1028 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1029 __FILE__, __LINE__, __func__);
1030 return -1;
1031 }
1032 if ((_transport_set_identify(ioc, mpt3sas_phy->handle,
1033 &mpt3sas_phy->identify))) {
1034 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1035 __FILE__, __LINE__, __func__);
1036 sas_phy_free(phy);
1037 return -1;
1038 }
1039 phy->identify = mpt3sas_phy->identify;
1040 mpt3sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
1041 if (mpt3sas_phy->attached_handle)
1042 _transport_set_identify(ioc, mpt3sas_phy->attached_handle,
1043 &mpt3sas_phy->remote_identify);
1044 phy->identify.phy_identifier = mpt3sas_phy->phy_id;
1045 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1046 phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1047 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
1048 phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
1049 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
1050 phy_pg0.HwLinkRate >> 4);
1051 phy->minimum_linkrate = _transport_convert_phy_link_rate(
1052 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1053 phy->maximum_linkrate = _transport_convert_phy_link_rate(
1054 phy_pg0.ProgrammedLinkRate >> 4);
1055 phy->hostdata = mpt3sas_phy->port;
1056
1057 if ((sas_phy_add(phy))) {
1058 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1059 __FILE__, __LINE__, __func__);
1060 sas_phy_free(phy);
1061 return -1;
1062 }
1063 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1064 dev_printk(KERN_INFO, &phy->dev,
1065 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
1066 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1067 mpt3sas_phy->handle, (unsigned long long)
1068 mpt3sas_phy->identify.sas_address,
1069 mpt3sas_phy->attached_handle,
1070 (unsigned long long)
1071 mpt3sas_phy->remote_identify.sas_address);
1072 mpt3sas_phy->phy = phy;
1073 return 0;
1074 }
1075
1076
1077 /**
1078 * mpt3sas_transport_add_expander_phy - report expander phy to transport
1079 * @ioc: per adapter object
1080 * @mpt3sas_phy: mpt3sas per phy object
1081 * @expander_pg1: expander page 1
1082 * @parent_dev: parent device class object
1083 *
1084 * Return: 0 for success, non-zero for failure.
1085 */
1086 int
mpt3sas_transport_add_expander_phy(struct MPT3SAS_ADAPTER * ioc,struct _sas_phy * mpt3sas_phy,Mpi2ExpanderPage1_t expander_pg1,struct device * parent_dev)1087 mpt3sas_transport_add_expander_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
1088 *mpt3sas_phy, Mpi2ExpanderPage1_t expander_pg1,
1089 struct device *parent_dev)
1090 {
1091 struct sas_phy *phy;
1092 int phy_index = mpt3sas_phy->phy_id;
1093
1094 INIT_LIST_HEAD(&mpt3sas_phy->port_siblings);
1095 phy = sas_phy_alloc(parent_dev, phy_index);
1096 if (!phy) {
1097 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1098 __FILE__, __LINE__, __func__);
1099 return -1;
1100 }
1101 if ((_transport_set_identify(ioc, mpt3sas_phy->handle,
1102 &mpt3sas_phy->identify))) {
1103 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1104 __FILE__, __LINE__, __func__);
1105 sas_phy_free(phy);
1106 return -1;
1107 }
1108 phy->identify = mpt3sas_phy->identify;
1109 mpt3sas_phy->attached_handle =
1110 le16_to_cpu(expander_pg1.AttachedDevHandle);
1111 if (mpt3sas_phy->attached_handle)
1112 _transport_set_identify(ioc, mpt3sas_phy->attached_handle,
1113 &mpt3sas_phy->remote_identify);
1114 phy->identify.phy_identifier = mpt3sas_phy->phy_id;
1115 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1116 expander_pg1.NegotiatedLinkRate &
1117 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1118 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
1119 expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
1120 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
1121 expander_pg1.HwLinkRate >> 4);
1122 phy->minimum_linkrate = _transport_convert_phy_link_rate(
1123 expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1124 phy->maximum_linkrate = _transport_convert_phy_link_rate(
1125 expander_pg1.ProgrammedLinkRate >> 4);
1126 phy->hostdata = mpt3sas_phy->port;
1127
1128 if ((sas_phy_add(phy))) {
1129 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1130 __FILE__, __LINE__, __func__);
1131 sas_phy_free(phy);
1132 return -1;
1133 }
1134 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1135 dev_printk(KERN_INFO, &phy->dev,
1136 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
1137 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1138 mpt3sas_phy->handle, (unsigned long long)
1139 mpt3sas_phy->identify.sas_address,
1140 mpt3sas_phy->attached_handle,
1141 (unsigned long long)
1142 mpt3sas_phy->remote_identify.sas_address);
1143 mpt3sas_phy->phy = phy;
1144 return 0;
1145 }
1146
1147 /**
1148 * mpt3sas_transport_update_links - refreshing phy link changes
1149 * @ioc: per adapter object
1150 * @sas_address: sas address of parent expander or sas host
1151 * @handle: attached device handle
1152 * @phy_number: phy number
1153 * @link_rate: new link rate
1154 * @port: hba port entry
1155 *
1156 * Return nothing.
1157 */
1158 void
mpt3sas_transport_update_links(struct MPT3SAS_ADAPTER * ioc,u64 sas_address,u16 handle,u8 phy_number,u8 link_rate,struct hba_port * port)1159 mpt3sas_transport_update_links(struct MPT3SAS_ADAPTER *ioc,
1160 u64 sas_address, u16 handle, u8 phy_number, u8 link_rate,
1161 struct hba_port *port)
1162 {
1163 unsigned long flags;
1164 struct _sas_node *sas_node;
1165 struct _sas_phy *mpt3sas_phy;
1166 struct hba_port *hba_port = NULL;
1167
1168 if (ioc->shost_recovery || ioc->pci_error_recovery)
1169 return;
1170
1171 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1172 sas_node = _transport_sas_node_find_by_sas_address(ioc,
1173 sas_address, port);
1174 if (!sas_node) {
1175 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1176 return;
1177 }
1178
1179 mpt3sas_phy = &sas_node->phy[phy_number];
1180 mpt3sas_phy->attached_handle = handle;
1181 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1182 if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5)) {
1183 _transport_set_identify(ioc, handle,
1184 &mpt3sas_phy->remote_identify);
1185 if ((sas_node->handle <= ioc->sas_hba.num_phys) &&
1186 (ioc->multipath_on_hba)) {
1187 list_for_each_entry(hba_port,
1188 &ioc->port_table_list, list) {
1189 if (hba_port->sas_address == sas_address &&
1190 hba_port == port)
1191 hba_port->phy_mask |=
1192 (1 << mpt3sas_phy->phy_id);
1193 }
1194 }
1195 mpt3sas_transport_add_phy_to_an_existing_port(ioc, sas_node,
1196 mpt3sas_phy, mpt3sas_phy->remote_identify.sas_address,
1197 port);
1198 } else
1199 memset(&mpt3sas_phy->remote_identify, 0 , sizeof(struct
1200 sas_identify));
1201
1202 if (mpt3sas_phy->phy)
1203 mpt3sas_phy->phy->negotiated_linkrate =
1204 _transport_convert_phy_link_rate(link_rate);
1205
1206 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1207 dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
1208 "refresh: parent sas_addr(0x%016llx),\n"
1209 "\tlink_rate(0x%02x), phy(%d)\n"
1210 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1211 (unsigned long long)sas_address,
1212 link_rate, phy_number, handle, (unsigned long long)
1213 mpt3sas_phy->remote_identify.sas_address);
1214 }
1215
1216 static inline void *
phy_to_ioc(struct sas_phy * phy)1217 phy_to_ioc(struct sas_phy *phy)
1218 {
1219 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1220 return shost_priv(shost);
1221 }
1222
1223 static inline void *
rphy_to_ioc(struct sas_rphy * rphy)1224 rphy_to_ioc(struct sas_rphy *rphy)
1225 {
1226 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1227 return shost_priv(shost);
1228 }
1229
1230 /* report phy error log structure */
1231 struct phy_error_log_request {
1232 u8 smp_frame_type; /* 0x40 */
1233 u8 function; /* 0x11 */
1234 u8 allocated_response_length;
1235 u8 request_length; /* 02 */
1236 u8 reserved_1[5];
1237 u8 phy_identifier;
1238 u8 reserved_2[2];
1239 };
1240
1241 /* report phy error log reply structure */
1242 struct phy_error_log_reply {
1243 u8 smp_frame_type; /* 0x41 */
1244 u8 function; /* 0x11 */
1245 u8 function_result;
1246 u8 response_length;
1247 __be16 expander_change_count;
1248 u8 reserved_1[3];
1249 u8 phy_identifier;
1250 u8 reserved_2[2];
1251 __be32 invalid_dword;
1252 __be32 running_disparity_error;
1253 __be32 loss_of_dword_sync;
1254 __be32 phy_reset_problem;
1255 };
1256
1257 /**
1258 * _transport_get_expander_phy_error_log - return expander counters
1259 * @ioc: per adapter object
1260 * @phy: The sas phy object
1261 *
1262 * Return: 0 for success, non-zero for failure.
1263 *
1264 */
1265 static int
_transport_get_expander_phy_error_log(struct MPT3SAS_ADAPTER * ioc,struct sas_phy * phy)1266 _transport_get_expander_phy_error_log(struct MPT3SAS_ADAPTER *ioc,
1267 struct sas_phy *phy)
1268 {
1269 Mpi2SmpPassthroughRequest_t *mpi_request;
1270 Mpi2SmpPassthroughReply_t *mpi_reply;
1271 struct phy_error_log_request *phy_error_log_request;
1272 struct phy_error_log_reply *phy_error_log_reply;
1273 int rc;
1274 u16 smid;
1275 void *psge;
1276 u8 issue_reset = 0;
1277 void *data_out = NULL;
1278 dma_addr_t data_out_dma;
1279 u32 sz;
1280
1281 if (ioc->shost_recovery || ioc->pci_error_recovery) {
1282 ioc_info(ioc, "%s: host reset in progress!\n", __func__);
1283 return -EFAULT;
1284 }
1285
1286 mutex_lock(&ioc->transport_cmds.mutex);
1287
1288 if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1289 ioc_err(ioc, "%s: transport_cmds in use\n", __func__);
1290 rc = -EAGAIN;
1291 goto out;
1292 }
1293 ioc->transport_cmds.status = MPT3_CMD_PENDING;
1294
1295 rc = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT);
1296 if (rc)
1297 goto out;
1298
1299 smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
1300 if (!smid) {
1301 ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
1302 rc = -EAGAIN;
1303 goto out;
1304 }
1305
1306 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1307 ioc->transport_cmds.smid = smid;
1308
1309 sz = sizeof(struct phy_error_log_request) +
1310 sizeof(struct phy_error_log_reply);
1311 data_out = dma_alloc_coherent(&ioc->pdev->dev, sz, &data_out_dma,
1312 GFP_KERNEL);
1313 if (!data_out) {
1314 pr_err("failure at %s:%d/%s()!\n", __FILE__,
1315 __LINE__, __func__);
1316 rc = -ENOMEM;
1317 mpt3sas_base_free_smid(ioc, smid);
1318 goto out;
1319 }
1320
1321 rc = -EINVAL;
1322 memset(data_out, 0, sz);
1323 phy_error_log_request = data_out;
1324 phy_error_log_request->smp_frame_type = 0x40;
1325 phy_error_log_request->function = 0x11;
1326 phy_error_log_request->request_length = 2;
1327 phy_error_log_request->allocated_response_length = 0;
1328 phy_error_log_request->phy_identifier = phy->number;
1329
1330 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1331 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1332 mpi_request->PhysicalPort = _transport_get_port_id_by_sas_phy(phy);
1333 mpi_request->VF_ID = 0; /* TODO */
1334 mpi_request->VP_ID = 0;
1335 mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1336 mpi_request->RequestDataLength =
1337 cpu_to_le16(sizeof(struct phy_error_log_request));
1338 psge = &mpi_request->SGL;
1339
1340 ioc->build_sg(ioc, psge, data_out_dma,
1341 sizeof(struct phy_error_log_request),
1342 data_out_dma + sizeof(struct phy_error_log_request),
1343 sizeof(struct phy_error_log_reply));
1344
1345 dtransportprintk(ioc,
1346 ioc_info(ioc, "phy_error_log - send to sas_addr(0x%016llx), phy(%d)\n",
1347 (u64)phy->identify.sas_address,
1348 phy->number));
1349 init_completion(&ioc->transport_cmds.done);
1350 ioc->put_smid_default(ioc, smid);
1351 wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
1352
1353 if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
1354 ioc_err(ioc, "%s: timeout\n", __func__);
1355 _debug_dump_mf(mpi_request,
1356 sizeof(Mpi2SmpPassthroughRequest_t)/4);
1357 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
1358 issue_reset = 1;
1359 goto issue_host_reset;
1360 }
1361
1362 dtransportprintk(ioc, ioc_info(ioc, "phy_error_log - complete\n"));
1363
1364 if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
1365
1366 mpi_reply = ioc->transport_cmds.reply;
1367
1368 dtransportprintk(ioc,
1369 ioc_info(ioc, "phy_error_log - reply data transfer size(%d)\n",
1370 le16_to_cpu(mpi_reply->ResponseDataLength)));
1371
1372 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1373 sizeof(struct phy_error_log_reply))
1374 goto out;
1375
1376 phy_error_log_reply = data_out +
1377 sizeof(struct phy_error_log_request);
1378
1379 dtransportprintk(ioc,
1380 ioc_info(ioc, "phy_error_log - function_result(%d)\n",
1381 phy_error_log_reply->function_result));
1382
1383 phy->invalid_dword_count =
1384 be32_to_cpu(phy_error_log_reply->invalid_dword);
1385 phy->running_disparity_error_count =
1386 be32_to_cpu(phy_error_log_reply->running_disparity_error);
1387 phy->loss_of_dword_sync_count =
1388 be32_to_cpu(phy_error_log_reply->loss_of_dword_sync);
1389 phy->phy_reset_problem_count =
1390 be32_to_cpu(phy_error_log_reply->phy_reset_problem);
1391 rc = 0;
1392 } else
1393 dtransportprintk(ioc,
1394 ioc_info(ioc, "phy_error_log - no reply\n"));
1395
1396 issue_host_reset:
1397 if (issue_reset)
1398 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1399 out:
1400 ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
1401 if (data_out)
1402 dma_free_coherent(&ioc->pdev->dev, sz, data_out, data_out_dma);
1403
1404 mutex_unlock(&ioc->transport_cmds.mutex);
1405 return rc;
1406 }
1407
1408 /**
1409 * _transport_get_linkerrors - return phy counters for both hba and expanders
1410 * @phy: The sas phy object
1411 *
1412 * Return: 0 for success, non-zero for failure.
1413 *
1414 */
1415 static int
_transport_get_linkerrors(struct sas_phy * phy)1416 _transport_get_linkerrors(struct sas_phy *phy)
1417 {
1418 struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1419 unsigned long flags;
1420 Mpi2ConfigReply_t mpi_reply;
1421 Mpi2SasPhyPage1_t phy_pg1;
1422 struct hba_port *port = phy->hostdata;
1423 int port_id = port->port_id;
1424
1425 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1426 if (_transport_sas_node_find_by_sas_address(ioc,
1427 phy->identify.sas_address,
1428 mpt3sas_get_port_by_id(ioc, port_id, 0)) == NULL) {
1429 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1430 return -EINVAL;
1431 }
1432 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1433
1434 if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1435 return _transport_get_expander_phy_error_log(ioc, phy);
1436
1437 /* get hba phy error logs */
1438 if ((mpt3sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
1439 phy->number))) {
1440 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1441 __FILE__, __LINE__, __func__);
1442 return -ENXIO;
1443 }
1444
1445 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1446 ioc_info(ioc, "phy(%d), ioc_status (0x%04x), loginfo(0x%08x)\n",
1447 phy->number,
1448 le16_to_cpu(mpi_reply.IOCStatus),
1449 le32_to_cpu(mpi_reply.IOCLogInfo));
1450
1451 phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
1452 phy->running_disparity_error_count =
1453 le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
1454 phy->loss_of_dword_sync_count =
1455 le32_to_cpu(phy_pg1.LossDwordSynchCount);
1456 phy->phy_reset_problem_count =
1457 le32_to_cpu(phy_pg1.PhyResetProblemCount);
1458 return 0;
1459 }
1460
1461 /**
1462 * _transport_get_enclosure_identifier -
1463 * @rphy: The sas phy object
1464 * @identifier: ?
1465 *
1466 * Obtain the enclosure logical id for an expander.
1467 * Return: 0 for success, non-zero for failure.
1468 */
1469 static int
_transport_get_enclosure_identifier(struct sas_rphy * rphy,u64 * identifier)1470 _transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
1471 {
1472 struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1473 struct _sas_device *sas_device;
1474 unsigned long flags;
1475 int rc;
1476
1477 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1478 sas_device = __mpt3sas_get_sdev_by_rphy(ioc, rphy);
1479 if (sas_device) {
1480 *identifier = sas_device->enclosure_logical_id;
1481 rc = 0;
1482 sas_device_put(sas_device);
1483 } else {
1484 *identifier = 0;
1485 rc = -ENXIO;
1486 }
1487
1488 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1489 return rc;
1490 }
1491
1492 /**
1493 * _transport_get_bay_identifier -
1494 * @rphy: The sas phy object
1495 *
1496 * Return: the slot id for a device that resides inside an enclosure.
1497 */
1498 static int
_transport_get_bay_identifier(struct sas_rphy * rphy)1499 _transport_get_bay_identifier(struct sas_rphy *rphy)
1500 {
1501 struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1502 struct _sas_device *sas_device;
1503 unsigned long flags;
1504 int rc;
1505
1506 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1507 sas_device = __mpt3sas_get_sdev_by_rphy(ioc, rphy);
1508 if (sas_device) {
1509 rc = sas_device->slot;
1510 sas_device_put(sas_device);
1511 } else {
1512 rc = -ENXIO;
1513 }
1514 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1515 return rc;
1516 }
1517
1518 /* phy control request structure */
1519 struct phy_control_request {
1520 u8 smp_frame_type; /* 0x40 */
1521 u8 function; /* 0x91 */
1522 u8 allocated_response_length;
1523 u8 request_length; /* 0x09 */
1524 u16 expander_change_count;
1525 u8 reserved_1[3];
1526 u8 phy_identifier;
1527 u8 phy_operation;
1528 u8 reserved_2[13];
1529 u64 attached_device_name;
1530 u8 programmed_min_physical_link_rate;
1531 u8 programmed_max_physical_link_rate;
1532 u8 reserved_3[6];
1533 };
1534
1535 /* phy control reply structure */
1536 struct phy_control_reply {
1537 u8 smp_frame_type; /* 0x41 */
1538 u8 function; /* 0x11 */
1539 u8 function_result;
1540 u8 response_length;
1541 };
1542
1543 #define SMP_PHY_CONTROL_LINK_RESET (0x01)
1544 #define SMP_PHY_CONTROL_HARD_RESET (0x02)
1545 #define SMP_PHY_CONTROL_DISABLE (0x03)
1546
1547 /**
1548 * _transport_expander_phy_control - expander phy control
1549 * @ioc: per adapter object
1550 * @phy: The sas phy object
1551 * @phy_operation: ?
1552 *
1553 * Return: 0 for success, non-zero for failure.
1554 *
1555 */
1556 static int
_transport_expander_phy_control(struct MPT3SAS_ADAPTER * ioc,struct sas_phy * phy,u8 phy_operation)1557 _transport_expander_phy_control(struct MPT3SAS_ADAPTER *ioc,
1558 struct sas_phy *phy, u8 phy_operation)
1559 {
1560 Mpi2SmpPassthroughRequest_t *mpi_request;
1561 Mpi2SmpPassthroughReply_t *mpi_reply;
1562 struct phy_control_request *phy_control_request;
1563 struct phy_control_reply *phy_control_reply;
1564 int rc;
1565 u16 smid;
1566 void *psge;
1567 u8 issue_reset = 0;
1568 void *data_out = NULL;
1569 dma_addr_t data_out_dma;
1570 u32 sz;
1571
1572 if (ioc->shost_recovery || ioc->pci_error_recovery) {
1573 ioc_info(ioc, "%s: host reset in progress!\n", __func__);
1574 return -EFAULT;
1575 }
1576
1577 mutex_lock(&ioc->transport_cmds.mutex);
1578
1579 if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1580 ioc_err(ioc, "%s: transport_cmds in use\n", __func__);
1581 rc = -EAGAIN;
1582 goto out;
1583 }
1584 ioc->transport_cmds.status = MPT3_CMD_PENDING;
1585
1586 rc = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT);
1587 if (rc)
1588 goto out;
1589
1590 smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
1591 if (!smid) {
1592 ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
1593 rc = -EAGAIN;
1594 goto out;
1595 }
1596
1597 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1598 ioc->transport_cmds.smid = smid;
1599
1600 sz = sizeof(struct phy_control_request) +
1601 sizeof(struct phy_control_reply);
1602 data_out = dma_alloc_coherent(&ioc->pdev->dev, sz, &data_out_dma,
1603 GFP_KERNEL);
1604 if (!data_out) {
1605 pr_err("failure at %s:%d/%s()!\n", __FILE__,
1606 __LINE__, __func__);
1607 rc = -ENOMEM;
1608 mpt3sas_base_free_smid(ioc, smid);
1609 goto out;
1610 }
1611
1612 rc = -EINVAL;
1613 memset(data_out, 0, sz);
1614 phy_control_request = data_out;
1615 phy_control_request->smp_frame_type = 0x40;
1616 phy_control_request->function = 0x91;
1617 phy_control_request->request_length = 9;
1618 phy_control_request->allocated_response_length = 0;
1619 phy_control_request->phy_identifier = phy->number;
1620 phy_control_request->phy_operation = phy_operation;
1621 phy_control_request->programmed_min_physical_link_rate =
1622 phy->minimum_linkrate << 4;
1623 phy_control_request->programmed_max_physical_link_rate =
1624 phy->maximum_linkrate << 4;
1625
1626 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1627 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1628 mpi_request->PhysicalPort = _transport_get_port_id_by_sas_phy(phy);
1629 mpi_request->VF_ID = 0; /* TODO */
1630 mpi_request->VP_ID = 0;
1631 mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1632 mpi_request->RequestDataLength =
1633 cpu_to_le16(sizeof(struct phy_error_log_request));
1634 psge = &mpi_request->SGL;
1635
1636 ioc->build_sg(ioc, psge, data_out_dma,
1637 sizeof(struct phy_control_request),
1638 data_out_dma + sizeof(struct phy_control_request),
1639 sizeof(struct phy_control_reply));
1640
1641 dtransportprintk(ioc,
1642 ioc_info(ioc, "phy_control - send to sas_addr(0x%016llx), phy(%d), opcode(%d)\n",
1643 (u64)phy->identify.sas_address,
1644 phy->number, phy_operation));
1645 init_completion(&ioc->transport_cmds.done);
1646 ioc->put_smid_default(ioc, smid);
1647 wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
1648
1649 if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
1650 ioc_err(ioc, "%s: timeout\n", __func__);
1651 _debug_dump_mf(mpi_request,
1652 sizeof(Mpi2SmpPassthroughRequest_t)/4);
1653 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
1654 issue_reset = 1;
1655 goto issue_host_reset;
1656 }
1657
1658 dtransportprintk(ioc, ioc_info(ioc, "phy_control - complete\n"));
1659
1660 if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
1661
1662 mpi_reply = ioc->transport_cmds.reply;
1663
1664 dtransportprintk(ioc,
1665 ioc_info(ioc, "phy_control - reply data transfer size(%d)\n",
1666 le16_to_cpu(mpi_reply->ResponseDataLength)));
1667
1668 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1669 sizeof(struct phy_control_reply))
1670 goto out;
1671
1672 phy_control_reply = data_out +
1673 sizeof(struct phy_control_request);
1674
1675 dtransportprintk(ioc,
1676 ioc_info(ioc, "phy_control - function_result(%d)\n",
1677 phy_control_reply->function_result));
1678
1679 rc = 0;
1680 } else
1681 dtransportprintk(ioc,
1682 ioc_info(ioc, "phy_control - no reply\n"));
1683
1684 issue_host_reset:
1685 if (issue_reset)
1686 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1687 out:
1688 ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
1689 if (data_out)
1690 dma_free_coherent(&ioc->pdev->dev, sz, data_out,
1691 data_out_dma);
1692
1693 mutex_unlock(&ioc->transport_cmds.mutex);
1694 return rc;
1695 }
1696
1697 /**
1698 * _transport_phy_reset -
1699 * @phy: The sas phy object
1700 * @hard_reset:
1701 *
1702 * Return: 0 for success, non-zero for failure.
1703 */
1704 static int
_transport_phy_reset(struct sas_phy * phy,int hard_reset)1705 _transport_phy_reset(struct sas_phy *phy, int hard_reset)
1706 {
1707 struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1708 Mpi2SasIoUnitControlReply_t mpi_reply;
1709 Mpi2SasIoUnitControlRequest_t mpi_request;
1710 struct hba_port *port = phy->hostdata;
1711 int port_id = port->port_id;
1712 unsigned long flags;
1713
1714 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1715 if (_transport_sas_node_find_by_sas_address(ioc,
1716 phy->identify.sas_address,
1717 mpt3sas_get_port_by_id(ioc, port_id, 0)) == NULL) {
1718 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1719 return -EINVAL;
1720 }
1721 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1722
1723 /* handle expander phys */
1724 if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1725 return _transport_expander_phy_control(ioc, phy,
1726 (hard_reset == 1) ? SMP_PHY_CONTROL_HARD_RESET :
1727 SMP_PHY_CONTROL_LINK_RESET);
1728
1729 /* handle hba phys */
1730 memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
1731 mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
1732 mpi_request.Operation = hard_reset ?
1733 MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
1734 mpi_request.PhyNum = phy->number;
1735
1736 if ((mpt3sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
1737 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1738 __FILE__, __LINE__, __func__);
1739 return -ENXIO;
1740 }
1741
1742 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1743 ioc_info(ioc, "phy(%d), ioc_status(0x%04x), loginfo(0x%08x)\n",
1744 phy->number, le16_to_cpu(mpi_reply.IOCStatus),
1745 le32_to_cpu(mpi_reply.IOCLogInfo));
1746
1747 return 0;
1748 }
1749
1750 /**
1751 * _transport_phy_enable - enable/disable phys
1752 * @phy: The sas phy object
1753 * @enable: enable phy when true
1754 *
1755 * Only support sas_host direct attached phys.
1756 * Return: 0 for success, non-zero for failure.
1757 */
1758 static int
_transport_phy_enable(struct sas_phy * phy,int enable)1759 _transport_phy_enable(struct sas_phy *phy, int enable)
1760 {
1761 struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1762 Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1763 Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
1764 Mpi2ConfigReply_t mpi_reply;
1765 u16 ioc_status;
1766 u16 sz;
1767 int rc = 0;
1768 unsigned long flags;
1769 int i, discovery_active;
1770 struct hba_port *port = phy->hostdata;
1771 int port_id = port->port_id;
1772
1773 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1774 if (_transport_sas_node_find_by_sas_address(ioc,
1775 phy->identify.sas_address,
1776 mpt3sas_get_port_by_id(ioc, port_id, 0)) == NULL) {
1777 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1778 return -EINVAL;
1779 }
1780 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1781
1782 /* handle expander phys */
1783 if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1784 return _transport_expander_phy_control(ioc, phy,
1785 (enable == 1) ? SMP_PHY_CONTROL_LINK_RESET :
1786 SMP_PHY_CONTROL_DISABLE);
1787
1788 /* handle hba phys */
1789
1790 /* read sas_iounit page 0 */
1791 sz = struct_size(sas_iounit_pg0, PhyData, ioc->sas_hba.num_phys);
1792 sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
1793 if (!sas_iounit_pg0) {
1794 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1795 __FILE__, __LINE__, __func__);
1796 rc = -ENOMEM;
1797 goto out;
1798 }
1799 if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
1800 sas_iounit_pg0, sz))) {
1801 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1802 __FILE__, __LINE__, __func__);
1803 rc = -ENXIO;
1804 goto out;
1805 }
1806 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1807 MPI2_IOCSTATUS_MASK;
1808 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1809 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1810 __FILE__, __LINE__, __func__);
1811 rc = -EIO;
1812 goto out;
1813 }
1814
1815 /* unable to enable/disable phys when when discovery is active */
1816 for (i = 0, discovery_active = 0; i < ioc->sas_hba.num_phys ; i++) {
1817 if (sas_iounit_pg0->PhyData[i].PortFlags &
1818 MPI2_SASIOUNIT0_PORTFLAGS_DISCOVERY_IN_PROGRESS) {
1819 ioc_err(ioc, "discovery is active on port = %d, phy = %d: unable to enable/disable phys, try again later!\n",
1820 sas_iounit_pg0->PhyData[i].Port, i);
1821 discovery_active = 1;
1822 }
1823 }
1824
1825 if (discovery_active) {
1826 rc = -EAGAIN;
1827 goto out;
1828 }
1829
1830 /* read sas_iounit page 1 */
1831 sz = struct_size(sas_iounit_pg1, PhyData, ioc->sas_hba.num_phys);
1832 sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1833 if (!sas_iounit_pg1) {
1834 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1835 __FILE__, __LINE__, __func__);
1836 rc = -ENOMEM;
1837 goto out;
1838 }
1839 if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1840 sas_iounit_pg1, sz))) {
1841 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1842 __FILE__, __LINE__, __func__);
1843 rc = -ENXIO;
1844 goto out;
1845 }
1846 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1847 MPI2_IOCSTATUS_MASK;
1848 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1849 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1850 __FILE__, __LINE__, __func__);
1851 rc = -EIO;
1852 goto out;
1853 }
1854
1855 /* copy Port/PortFlags/PhyFlags from page 0 */
1856 for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
1857 sas_iounit_pg1->PhyData[i].Port =
1858 sas_iounit_pg0->PhyData[i].Port;
1859 sas_iounit_pg1->PhyData[i].PortFlags =
1860 (sas_iounit_pg0->PhyData[i].PortFlags &
1861 MPI2_SASIOUNIT0_PORTFLAGS_AUTO_PORT_CONFIG);
1862 sas_iounit_pg1->PhyData[i].PhyFlags =
1863 (sas_iounit_pg0->PhyData[i].PhyFlags &
1864 (MPI2_SASIOUNIT0_PHYFLAGS_ZONING_ENABLED +
1865 MPI2_SASIOUNIT0_PHYFLAGS_PHY_DISABLED));
1866 }
1867
1868 if (enable)
1869 sas_iounit_pg1->PhyData[phy->number].PhyFlags
1870 &= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1871 else
1872 sas_iounit_pg1->PhyData[phy->number].PhyFlags
1873 |= MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1874
1875 mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, sz);
1876
1877 /* link reset */
1878 if (enable)
1879 _transport_phy_reset(phy, 0);
1880
1881 out:
1882 kfree(sas_iounit_pg1);
1883 kfree(sas_iounit_pg0);
1884 return rc;
1885 }
1886
1887 /**
1888 * _transport_phy_speed - set phy min/max link rates
1889 * @phy: The sas phy object
1890 * @rates: rates defined in sas_phy_linkrates
1891 *
1892 * Only support sas_host direct attached phys.
1893 *
1894 * Return: 0 for success, non-zero for failure.
1895 */
1896 static int
_transport_phy_speed(struct sas_phy * phy,struct sas_phy_linkrates * rates)1897 _transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
1898 {
1899 struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1900 Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1901 Mpi2SasPhyPage0_t phy_pg0;
1902 Mpi2ConfigReply_t mpi_reply;
1903 u16 ioc_status;
1904 u16 sz;
1905 int i;
1906 int rc = 0;
1907 unsigned long flags;
1908 struct hba_port *port = phy->hostdata;
1909 int port_id = port->port_id;
1910
1911 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1912 if (_transport_sas_node_find_by_sas_address(ioc,
1913 phy->identify.sas_address,
1914 mpt3sas_get_port_by_id(ioc, port_id, 0)) == NULL) {
1915 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1916 return -EINVAL;
1917 }
1918 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1919
1920 if (!rates->minimum_linkrate)
1921 rates->minimum_linkrate = phy->minimum_linkrate;
1922 else if (rates->minimum_linkrate < phy->minimum_linkrate_hw)
1923 rates->minimum_linkrate = phy->minimum_linkrate_hw;
1924
1925 if (!rates->maximum_linkrate)
1926 rates->maximum_linkrate = phy->maximum_linkrate;
1927 else if (rates->maximum_linkrate > phy->maximum_linkrate_hw)
1928 rates->maximum_linkrate = phy->maximum_linkrate_hw;
1929
1930 /* handle expander phys */
1931 if (phy->identify.sas_address != ioc->sas_hba.sas_address) {
1932 phy->minimum_linkrate = rates->minimum_linkrate;
1933 phy->maximum_linkrate = rates->maximum_linkrate;
1934 return _transport_expander_phy_control(ioc, phy,
1935 SMP_PHY_CONTROL_LINK_RESET);
1936 }
1937
1938 /* handle hba phys */
1939
1940 /* sas_iounit page 1 */
1941 sz = struct_size(sas_iounit_pg1, PhyData, ioc->sas_hba.num_phys);
1942 sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1943 if (!sas_iounit_pg1) {
1944 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1945 __FILE__, __LINE__, __func__);
1946 rc = -ENOMEM;
1947 goto out;
1948 }
1949 if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1950 sas_iounit_pg1, sz))) {
1951 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1952 __FILE__, __LINE__, __func__);
1953 rc = -ENXIO;
1954 goto out;
1955 }
1956 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1957 MPI2_IOCSTATUS_MASK;
1958 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1959 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1960 __FILE__, __LINE__, __func__);
1961 rc = -EIO;
1962 goto out;
1963 }
1964
1965 for (i = 0; i < ioc->sas_hba.num_phys; i++) {
1966 if (phy->number != i) {
1967 sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1968 (ioc->sas_hba.phy[i].phy->minimum_linkrate +
1969 (ioc->sas_hba.phy[i].phy->maximum_linkrate << 4));
1970 } else {
1971 sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1972 (rates->minimum_linkrate +
1973 (rates->maximum_linkrate << 4));
1974 }
1975 }
1976
1977 if (mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
1978 sz)) {
1979 ioc_err(ioc, "failure at %s:%d/%s()!\n",
1980 __FILE__, __LINE__, __func__);
1981 rc = -ENXIO;
1982 goto out;
1983 }
1984
1985 /* link reset */
1986 _transport_phy_reset(phy, 0);
1987
1988 /* read phy page 0, then update the rates in the sas transport phy */
1989 if (!mpt3sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
1990 phy->number)) {
1991 phy->minimum_linkrate = _transport_convert_phy_link_rate(
1992 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1993 phy->maximum_linkrate = _transport_convert_phy_link_rate(
1994 phy_pg0.ProgrammedLinkRate >> 4);
1995 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1996 phy_pg0.NegotiatedLinkRate &
1997 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1998 }
1999
2000 out:
2001 kfree(sas_iounit_pg1);
2002 return rc;
2003 }
2004
2005 static int
_transport_map_smp_buffer(struct device * dev,struct bsg_buffer * buf,dma_addr_t * dma_addr,size_t * dma_len,void ** p)2006 _transport_map_smp_buffer(struct device *dev, struct bsg_buffer *buf,
2007 dma_addr_t *dma_addr, size_t *dma_len, void **p)
2008 {
2009 /* Check if the request is split across multiple segments */
2010 if (buf->sg_cnt > 1) {
2011 *p = dma_alloc_coherent(dev, buf->payload_len, dma_addr,
2012 GFP_KERNEL);
2013 if (!*p)
2014 return -ENOMEM;
2015 *dma_len = buf->payload_len;
2016 } else {
2017 if (!dma_map_sg(dev, buf->sg_list, 1, DMA_BIDIRECTIONAL))
2018 return -ENOMEM;
2019 *dma_addr = sg_dma_address(buf->sg_list);
2020 *dma_len = sg_dma_len(buf->sg_list);
2021 *p = NULL;
2022 }
2023
2024 return 0;
2025 }
2026
2027 static void
_transport_unmap_smp_buffer(struct device * dev,struct bsg_buffer * buf,dma_addr_t dma_addr,void * p)2028 _transport_unmap_smp_buffer(struct device *dev, struct bsg_buffer *buf,
2029 dma_addr_t dma_addr, void *p)
2030 {
2031 if (p)
2032 dma_free_coherent(dev, buf->payload_len, p, dma_addr);
2033 else
2034 dma_unmap_sg(dev, buf->sg_list, 1, DMA_BIDIRECTIONAL);
2035 }
2036
2037 /**
2038 * _transport_smp_handler - transport portal for smp passthru
2039 * @job: ?
2040 * @shost: shost object
2041 * @rphy: sas transport rphy object
2042 *
2043 * This used primarily for smp_utils.
2044 * Example:
2045 * smp_rep_general /sys/class/bsg/expander-5:0
2046 */
2047 static void
_transport_smp_handler(struct bsg_job * job,struct Scsi_Host * shost,struct sas_rphy * rphy)2048 _transport_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
2049 struct sas_rphy *rphy)
2050 {
2051 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2052 Mpi2SmpPassthroughRequest_t *mpi_request;
2053 Mpi2SmpPassthroughReply_t *mpi_reply;
2054 int rc;
2055 u16 smid;
2056 void *psge;
2057 dma_addr_t dma_addr_in;
2058 dma_addr_t dma_addr_out;
2059 void *addr_in = NULL;
2060 void *addr_out = NULL;
2061 size_t dma_len_in;
2062 size_t dma_len_out;
2063 unsigned int reslen = 0;
2064
2065 if (ioc->shost_recovery || ioc->pci_error_recovery) {
2066 ioc_info(ioc, "%s: host reset in progress!\n", __func__);
2067 rc = -EFAULT;
2068 goto job_done;
2069 }
2070
2071 rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
2072 if (rc)
2073 goto job_done;
2074
2075 if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
2076 ioc_err(ioc, "%s: transport_cmds in use\n",
2077 __func__);
2078 rc = -EAGAIN;
2079 goto out;
2080 }
2081 ioc->transport_cmds.status = MPT3_CMD_PENDING;
2082
2083 rc = _transport_map_smp_buffer(&ioc->pdev->dev, &job->request_payload,
2084 &dma_addr_out, &dma_len_out, &addr_out);
2085 if (rc)
2086 goto out;
2087 if (addr_out) {
2088 sg_copy_to_buffer(job->request_payload.sg_list,
2089 job->request_payload.sg_cnt, addr_out,
2090 job->request_payload.payload_len);
2091 }
2092
2093 rc = _transport_map_smp_buffer(&ioc->pdev->dev, &job->reply_payload,
2094 &dma_addr_in, &dma_len_in, &addr_in);
2095 if (rc)
2096 goto unmap_out;
2097
2098 rc = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT);
2099 if (rc)
2100 goto unmap_in;
2101
2102 smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
2103 if (!smid) {
2104 ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
2105 rc = -EAGAIN;
2106 goto unmap_in;
2107 }
2108
2109 rc = 0;
2110 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
2111 ioc->transport_cmds.smid = smid;
2112
2113 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
2114 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
2115 mpi_request->PhysicalPort = _transport_get_port_id_by_rphy(ioc, rphy);
2116 mpi_request->SASAddress = (rphy) ?
2117 cpu_to_le64(rphy->identify.sas_address) :
2118 cpu_to_le64(ioc->sas_hba.sas_address);
2119 mpi_request->RequestDataLength = cpu_to_le16(dma_len_out - 4);
2120 psge = &mpi_request->SGL;
2121
2122 ioc->build_sg(ioc, psge, dma_addr_out, dma_len_out - 4, dma_addr_in,
2123 dma_len_in - 4);
2124
2125 dtransportprintk(ioc,
2126 ioc_info(ioc, "%s: sending smp request\n", __func__));
2127
2128 init_completion(&ioc->transport_cmds.done);
2129 ioc->put_smid_default(ioc, smid);
2130 wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
2131
2132 if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
2133 ioc_err(ioc, "%s: timeout\n", __func__);
2134 _debug_dump_mf(mpi_request,
2135 sizeof(Mpi2SmpPassthroughRequest_t)/4);
2136 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET)) {
2137 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2138 rc = -ETIMEDOUT;
2139 goto unmap_in;
2140 }
2141 }
2142
2143 dtransportprintk(ioc, ioc_info(ioc, "%s - complete\n", __func__));
2144
2145 if (!(ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID)) {
2146 dtransportprintk(ioc,
2147 ioc_info(ioc, "%s: no reply\n", __func__));
2148 rc = -ENXIO;
2149 goto unmap_in;
2150 }
2151
2152 mpi_reply = ioc->transport_cmds.reply;
2153
2154 dtransportprintk(ioc,
2155 ioc_info(ioc, "%s: reply data transfer size(%d)\n",
2156 __func__,
2157 le16_to_cpu(mpi_reply->ResponseDataLength)));
2158
2159 memcpy(job->reply, mpi_reply, sizeof(*mpi_reply));
2160 job->reply_len = sizeof(*mpi_reply);
2161 reslen = le16_to_cpu(mpi_reply->ResponseDataLength);
2162
2163 if (addr_in) {
2164 sg_copy_to_buffer(job->reply_payload.sg_list,
2165 job->reply_payload.sg_cnt, addr_in,
2166 job->reply_payload.payload_len);
2167 }
2168
2169 rc = 0;
2170 unmap_in:
2171 _transport_unmap_smp_buffer(&ioc->pdev->dev, &job->reply_payload,
2172 dma_addr_in, addr_in);
2173 unmap_out:
2174 _transport_unmap_smp_buffer(&ioc->pdev->dev, &job->request_payload,
2175 dma_addr_out, addr_out);
2176 out:
2177 ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
2178 mutex_unlock(&ioc->transport_cmds.mutex);
2179 job_done:
2180 bsg_job_done(job, rc, reslen);
2181 }
2182
2183 struct sas_function_template mpt3sas_transport_functions = {
2184 .get_linkerrors = _transport_get_linkerrors,
2185 .get_enclosure_identifier = _transport_get_enclosure_identifier,
2186 .get_bay_identifier = _transport_get_bay_identifier,
2187 .phy_reset = _transport_phy_reset,
2188 .phy_enable = _transport_phy_enable,
2189 .set_phy_speed = _transport_phy_speed,
2190 .smp_handler = _transport_smp_handler,
2191 };
2192
2193 struct scsi_transport_template *mpt3sas_transport_template;
2194