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
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 *
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
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
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
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
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
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 		strncpy(edev->vendor_id, manufacture_reply->vendor_id,
462 		     SAS_EXPANDER_VENDOR_ID_LEN);
463 		strncpy(edev->product_id, manufacture_reply->product_id,
464 		     SAS_EXPANDER_PRODUCT_ID_LEN);
465 		strncpy(edev->product_rev, manufacture_reply->product_rev,
466 		     SAS_EXPANDER_PRODUCT_REV_LEN);
467 		edev->level = manufacture_reply->sas_format & 1;
468 		if (edev->level) {
469 			strncpy(edev->component_vendor_id,
470 			    manufacture_reply->component_vendor_id,
471 			     SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN);
472 			tmp = (u8 *)&manufacture_reply->component_id;
473 			edev->component_id = tmp[0] << 8 | tmp[1];
474 			edev->component_revision_id =
475 			    manufacture_reply->component_revision_id;
476 		}
477 	} else
478 		dtransportprintk(ioc,
479 				 ioc_info(ioc, "report_manufacture - no reply\n"));
480 
481  issue_host_reset:
482 	if (issue_reset)
483 		mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
484  out:
485 	ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
486 	if (data_out)
487 		dma_free_coherent(&ioc->pdev->dev, data_out_sz + data_in_sz,
488 		    data_out, data_out_dma);
489 
490 	mutex_unlock(&ioc->transport_cmds.mutex);
491 	return rc;
492 }
493 
494 
495 /**
496  * _transport_delete_port - helper function to removing a port
497  * @ioc: per adapter object
498  * @mpt3sas_port: mpt3sas per port object
499  */
500 static void
501 _transport_delete_port(struct MPT3SAS_ADAPTER *ioc,
502 	struct _sas_port *mpt3sas_port)
503 {
504 	u64 sas_address = mpt3sas_port->remote_identify.sas_address;
505 	struct hba_port *port = mpt3sas_port->hba_port;
506 	enum sas_device_type device_type =
507 	    mpt3sas_port->remote_identify.device_type;
508 
509 	dev_printk(KERN_INFO, &mpt3sas_port->port->dev,
510 	    "remove: sas_addr(0x%016llx)\n",
511 	    (unsigned long long) sas_address);
512 
513 	ioc->logging_level |= MPT_DEBUG_TRANSPORT;
514 	if (device_type == SAS_END_DEVICE)
515 		mpt3sas_device_remove_by_sas_address(ioc,
516 		    sas_address, port);
517 	else if (device_type == SAS_EDGE_EXPANDER_DEVICE ||
518 	    device_type == SAS_FANOUT_EXPANDER_DEVICE)
519 		mpt3sas_expander_remove(ioc, sas_address, port);
520 	ioc->logging_level &= ~MPT_DEBUG_TRANSPORT;
521 }
522 
523 /**
524  * _transport_delete_phy - helper function to removing single phy from port
525  * @ioc: per adapter object
526  * @mpt3sas_port: mpt3sas per port object
527  * @mpt3sas_phy: mpt3sas per phy object
528  */
529 static void
530 _transport_delete_phy(struct MPT3SAS_ADAPTER *ioc,
531 	struct _sas_port *mpt3sas_port, struct _sas_phy *mpt3sas_phy)
532 {
533 	u64 sas_address = mpt3sas_port->remote_identify.sas_address;
534 
535 	dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
536 	    "remove: sas_addr(0x%016llx), phy(%d)\n",
537 	    (unsigned long long) sas_address, mpt3sas_phy->phy_id);
538 
539 	list_del(&mpt3sas_phy->port_siblings);
540 	mpt3sas_port->num_phys--;
541 	sas_port_delete_phy(mpt3sas_port->port, mpt3sas_phy->phy);
542 	mpt3sas_phy->phy_belongs_to_port = 0;
543 }
544 
545 /**
546  * _transport_add_phy - helper function to adding single phy to port
547  * @ioc: per adapter object
548  * @mpt3sas_port: mpt3sas per port object
549  * @mpt3sas_phy: mpt3sas per phy object
550  */
551 static void
552 _transport_add_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_port *mpt3sas_port,
553 	struct _sas_phy *mpt3sas_phy)
554 {
555 	u64 sas_address = mpt3sas_port->remote_identify.sas_address;
556 
557 	dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
558 	    "add: sas_addr(0x%016llx), phy(%d)\n", (unsigned long long)
559 	    sas_address, mpt3sas_phy->phy_id);
560 
561 	list_add_tail(&mpt3sas_phy->port_siblings, &mpt3sas_port->phy_list);
562 	mpt3sas_port->num_phys++;
563 	sas_port_add_phy(mpt3sas_port->port, mpt3sas_phy->phy);
564 	mpt3sas_phy->phy_belongs_to_port = 1;
565 }
566 
567 /**
568  * mpt3sas_transport_add_phy_to_an_existing_port - adding new phy to existing port
569  * @ioc: per adapter object
570  * @sas_node: sas node object (either expander or sas host)
571  * @mpt3sas_phy: mpt3sas per phy object
572  * @sas_address: sas address of device/expander were phy needs to be added to
573  * @port: hba port entry
574  */
575 void
576 mpt3sas_transport_add_phy_to_an_existing_port(struct MPT3SAS_ADAPTER *ioc,
577 	struct _sas_node *sas_node, struct _sas_phy *mpt3sas_phy,
578 	u64 sas_address, struct hba_port *port)
579 {
580 	struct _sas_port *mpt3sas_port;
581 	struct _sas_phy *phy_srch;
582 
583 	if (mpt3sas_phy->phy_belongs_to_port == 1)
584 		return;
585 
586 	if (!port)
587 		return;
588 
589 	list_for_each_entry(mpt3sas_port, &sas_node->sas_port_list,
590 	    port_list) {
591 		if (mpt3sas_port->remote_identify.sas_address !=
592 		    sas_address)
593 			continue;
594 		if (mpt3sas_port->hba_port != port)
595 			continue;
596 		list_for_each_entry(phy_srch, &mpt3sas_port->phy_list,
597 		    port_siblings) {
598 			if (phy_srch == mpt3sas_phy)
599 				return;
600 		}
601 		_transport_add_phy(ioc, mpt3sas_port, mpt3sas_phy);
602 		return;
603 	}
604 
605 }
606 
607 /**
608  * mpt3sas_transport_del_phy_from_an_existing_port - delete phy from existing port
609  * @ioc: per adapter object
610  * @sas_node: sas node object (either expander or sas host)
611  * @mpt3sas_phy: mpt3sas per phy object
612  */
613 void
614 mpt3sas_transport_del_phy_from_an_existing_port(struct MPT3SAS_ADAPTER *ioc,
615 	struct _sas_node *sas_node, struct _sas_phy *mpt3sas_phy)
616 {
617 	struct _sas_port *mpt3sas_port, *next;
618 	struct _sas_phy *phy_srch;
619 
620 	if (mpt3sas_phy->phy_belongs_to_port == 0)
621 		return;
622 
623 	list_for_each_entry_safe(mpt3sas_port, next, &sas_node->sas_port_list,
624 	    port_list) {
625 		list_for_each_entry(phy_srch, &mpt3sas_port->phy_list,
626 		    port_siblings) {
627 			if (phy_srch != mpt3sas_phy)
628 				continue;
629 
630 			/*
631 			 * Don't delete port during host reset,
632 			 * just delete phy.
633 			 */
634 			if (mpt3sas_port->num_phys == 1 && !ioc->shost_recovery)
635 				_transport_delete_port(ioc, mpt3sas_port);
636 			else
637 				_transport_delete_phy(ioc, mpt3sas_port,
638 				    mpt3sas_phy);
639 			return;
640 		}
641 	}
642 }
643 
644 /**
645  * _transport_sanity_check - sanity check when adding a new port
646  * @ioc: per adapter object
647  * @sas_node: sas node object (either expander or sas host)
648  * @sas_address: sas address of device being added
649  * @port: hba port entry
650  *
651  * See the explanation above from _transport_delete_duplicate_port
652  */
653 static void
654 _transport_sanity_check(struct MPT3SAS_ADAPTER *ioc, struct _sas_node *sas_node,
655 	u64 sas_address, struct hba_port *port)
656 {
657 	int i;
658 
659 	for (i = 0; i < sas_node->num_phys; i++) {
660 		if (sas_node->phy[i].remote_identify.sas_address != sas_address)
661 			continue;
662 		if (sas_node->phy[i].port != port)
663 			continue;
664 		if (sas_node->phy[i].phy_belongs_to_port == 1)
665 			mpt3sas_transport_del_phy_from_an_existing_port(ioc,
666 			    sas_node, &sas_node->phy[i]);
667 	}
668 }
669 
670 /**
671  * mpt3sas_transport_port_add - insert port to the list
672  * @ioc: per adapter object
673  * @handle: handle of attached device
674  * @sas_address: sas address of parent expander or sas host
675  * @hba_port: hba port entry
676  * Context: This function will acquire ioc->sas_node_lock.
677  *
678  * Adding new port object to the sas_node->sas_port_list.
679  *
680  * Return: mpt3sas_port.
681  */
682 struct _sas_port *
683 mpt3sas_transport_port_add(struct MPT3SAS_ADAPTER *ioc, u16 handle,
684 	u64 sas_address, struct hba_port *hba_port)
685 {
686 	struct _sas_phy *mpt3sas_phy, *next;
687 	struct _sas_port *mpt3sas_port;
688 	unsigned long flags;
689 	struct _sas_node *sas_node;
690 	struct sas_rphy *rphy;
691 	struct _sas_device *sas_device = NULL;
692 	int i;
693 	struct sas_port *port;
694 	struct virtual_phy *vphy = NULL;
695 
696 	if (!hba_port) {
697 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
698 		    __FILE__, __LINE__, __func__);
699 		return NULL;
700 	}
701 
702 	mpt3sas_port = kzalloc(sizeof(struct _sas_port),
703 	    GFP_KERNEL);
704 	if (!mpt3sas_port) {
705 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
706 			__FILE__, __LINE__, __func__);
707 		return NULL;
708 	}
709 
710 	INIT_LIST_HEAD(&mpt3sas_port->port_list);
711 	INIT_LIST_HEAD(&mpt3sas_port->phy_list);
712 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
713 	sas_node = _transport_sas_node_find_by_sas_address(ioc,
714 	    sas_address, hba_port);
715 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
716 
717 	if (!sas_node) {
718 		ioc_err(ioc, "%s: Could not find parent sas_address(0x%016llx)!\n",
719 			__func__, (u64)sas_address);
720 		goto out_fail;
721 	}
722 
723 	if ((_transport_set_identify(ioc, handle,
724 	    &mpt3sas_port->remote_identify))) {
725 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
726 			__FILE__, __LINE__, __func__);
727 		goto out_fail;
728 	}
729 
730 	if (mpt3sas_port->remote_identify.device_type == SAS_PHY_UNUSED) {
731 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
732 			__FILE__, __LINE__, __func__);
733 		goto out_fail;
734 	}
735 
736 	mpt3sas_port->hba_port = hba_port;
737 	_transport_sanity_check(ioc, sas_node,
738 	    mpt3sas_port->remote_identify.sas_address, hba_port);
739 
740 	for (i = 0; i < sas_node->num_phys; i++) {
741 		if (sas_node->phy[i].remote_identify.sas_address !=
742 		    mpt3sas_port->remote_identify.sas_address)
743 			continue;
744 		if (sas_node->phy[i].port != hba_port)
745 			continue;
746 		list_add_tail(&sas_node->phy[i].port_siblings,
747 		    &mpt3sas_port->phy_list);
748 		mpt3sas_port->num_phys++;
749 		if (sas_node->handle <= ioc->sas_hba.num_phys) {
750 			if (!sas_node->phy[i].hba_vphy) {
751 				hba_port->phy_mask |= (1 << i);
752 				continue;
753 			}
754 
755 			vphy = mpt3sas_get_vphy_by_phy(ioc, hba_port, i);
756 			if (!vphy) {
757 				ioc_err(ioc, "failure at %s:%d/%s()!\n",
758 				    __FILE__, __LINE__, __func__);
759 				goto out_fail;
760 			}
761 		}
762 	}
763 
764 	if (!mpt3sas_port->num_phys) {
765 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
766 			__FILE__, __LINE__, __func__);
767 		goto out_fail;
768 	}
769 
770 	if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) {
771 		sas_device = mpt3sas_get_sdev_by_addr(ioc,
772 		    mpt3sas_port->remote_identify.sas_address,
773 		    mpt3sas_port->hba_port);
774 		if (!sas_device) {
775 			ioc_err(ioc, "failure at %s:%d/%s()!\n",
776 			    __FILE__, __LINE__, __func__);
777 			goto out_fail;
778 		}
779 		sas_device->pend_sas_rphy_add = 1;
780 	}
781 
782 	if (!sas_node->parent_dev) {
783 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
784 			__FILE__, __LINE__, __func__);
785 		goto out_fail;
786 	}
787 	port = sas_port_alloc_num(sas_node->parent_dev);
788 	if ((sas_port_add(port))) {
789 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
790 			__FILE__, __LINE__, __func__);
791 		goto out_fail;
792 	}
793 
794 	list_for_each_entry(mpt3sas_phy, &mpt3sas_port->phy_list,
795 	    port_siblings) {
796 		if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
797 			dev_printk(KERN_INFO, &port->dev,
798 				"add: handle(0x%04x), sas_addr(0x%016llx), phy(%d)\n",
799 				handle, (unsigned long long)
800 			    mpt3sas_port->remote_identify.sas_address,
801 			    mpt3sas_phy->phy_id);
802 		sas_port_add_phy(port, mpt3sas_phy->phy);
803 		mpt3sas_phy->phy_belongs_to_port = 1;
804 		mpt3sas_phy->port = hba_port;
805 	}
806 
807 	mpt3sas_port->port = port;
808 	if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) {
809 		rphy = sas_end_device_alloc(port);
810 		sas_device->rphy = rphy;
811 		if (sas_node->handle <= ioc->sas_hba.num_phys) {
812 			if (!vphy)
813 				hba_port->sas_address =
814 				    sas_device->sas_address;
815 			else
816 				vphy->sas_address =
817 				    sas_device->sas_address;
818 		}
819 	} else {
820 		rphy = sas_expander_alloc(port,
821 		    mpt3sas_port->remote_identify.device_type);
822 		if (sas_node->handle <= ioc->sas_hba.num_phys)
823 			hba_port->sas_address =
824 			    mpt3sas_port->remote_identify.sas_address;
825 	}
826 
827 	rphy->identify = mpt3sas_port->remote_identify;
828 
829 	if ((sas_rphy_add(rphy))) {
830 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
831 			__FILE__, __LINE__, __func__);
832 	}
833 
834 	if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) {
835 		sas_device->pend_sas_rphy_add = 0;
836 		sas_device_put(sas_device);
837 	}
838 
839 	dev_info(&rphy->dev,
840 	    "add: handle(0x%04x), sas_addr(0x%016llx)\n", handle,
841 	    (unsigned long long)mpt3sas_port->remote_identify.sas_address);
842 
843 	mpt3sas_port->rphy = rphy;
844 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
845 	list_add_tail(&mpt3sas_port->port_list, &sas_node->sas_port_list);
846 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
847 
848 	/* fill in report manufacture */
849 	if (mpt3sas_port->remote_identify.device_type ==
850 	    MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
851 	    mpt3sas_port->remote_identify.device_type ==
852 	    MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
853 		_transport_expander_report_manufacture(ioc,
854 		    mpt3sas_port->remote_identify.sas_address,
855 		    rphy_to_expander_device(rphy), hba_port->port_id);
856 	return mpt3sas_port;
857 
858  out_fail:
859 	list_for_each_entry_safe(mpt3sas_phy, next, &mpt3sas_port->phy_list,
860 	    port_siblings)
861 		list_del(&mpt3sas_phy->port_siblings);
862 	kfree(mpt3sas_port);
863 	return NULL;
864 }
865 
866 /**
867  * mpt3sas_transport_port_remove - remove port from the list
868  * @ioc: per adapter object
869  * @sas_address: sas address of attached device
870  * @sas_address_parent: sas address of parent expander or sas host
871  * @port: hba port entry
872  * Context: This function will acquire ioc->sas_node_lock.
873  *
874  * Removing object and freeing associated memory from the
875  * ioc->sas_port_list.
876  */
877 void
878 mpt3sas_transport_port_remove(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
879 	u64 sas_address_parent, struct hba_port *port)
880 {
881 	int i;
882 	unsigned long flags;
883 	struct _sas_port *mpt3sas_port, *next;
884 	struct _sas_node *sas_node;
885 	u8 found = 0;
886 	struct _sas_phy *mpt3sas_phy, *next_phy;
887 	struct hba_port *hba_port_next, *hba_port = NULL;
888 	struct virtual_phy *vphy, *vphy_next = NULL;
889 
890 	if (!port)
891 		return;
892 
893 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
894 	sas_node = _transport_sas_node_find_by_sas_address(ioc,
895 	    sas_address_parent, port);
896 	if (!sas_node) {
897 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
898 		return;
899 	}
900 	list_for_each_entry_safe(mpt3sas_port, next, &sas_node->sas_port_list,
901 	    port_list) {
902 		if (mpt3sas_port->remote_identify.sas_address != sas_address)
903 			continue;
904 		if (mpt3sas_port->hba_port != port)
905 			continue;
906 		found = 1;
907 		list_del(&mpt3sas_port->port_list);
908 		goto out;
909 	}
910  out:
911 	if (!found) {
912 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
913 		return;
914 	}
915 
916 	if (sas_node->handle <= ioc->sas_hba.num_phys &&
917 	    (ioc->multipath_on_hba)) {
918 		if (port->vphys_mask) {
919 			list_for_each_entry_safe(vphy, vphy_next,
920 			    &port->vphys_list, list) {
921 				if (vphy->sas_address != sas_address)
922 					continue;
923 				ioc_info(ioc,
924 				    "remove vphy entry: %p of port:%p,from %d port's vphys list\n",
925 				    vphy, port, port->port_id);
926 				port->vphys_mask &= ~vphy->phy_mask;
927 				list_del(&vphy->list);
928 				kfree(vphy);
929 			}
930 		}
931 
932 		list_for_each_entry_safe(hba_port, hba_port_next,
933 		    &ioc->port_table_list, list) {
934 			if (hba_port != port)
935 				continue;
936 			/*
937 			 * Delete hba_port object if
938 			 *  - hba_port object's sas address matches with current
939 			 *    removed device's sas address and no vphy's
940 			 *    associated with it.
941 			 *  - Current removed device is a vSES device and
942 			 *    none of the other direct attached device have
943 			 *    this vSES device's port number (hence hba_port
944 			 *    object sas_address field will be zero).
945 			 */
946 			if ((hba_port->sas_address == sas_address ||
947 			    !hba_port->sas_address) && !hba_port->vphys_mask) {
948 				ioc_info(ioc,
949 				    "remove hba_port entry: %p port: %d from hba_port list\n",
950 				    hba_port, hba_port->port_id);
951 				list_del(&hba_port->list);
952 				kfree(hba_port);
953 			} else if (hba_port->sas_address == sas_address &&
954 			    hba_port->vphys_mask) {
955 				/*
956 				 * Current removed device is a non vSES device
957 				 * and a vSES device has the same port number
958 				 * as of current device's port number. Hence
959 				 * only clear the sas_address filed, don't
960 				 * delete the hba_port object.
961 				 */
962 				ioc_info(ioc,
963 				    "clearing sas_address from hba_port entry: %p port: %d from hba_port list\n",
964 				    hba_port, hba_port->port_id);
965 				port->sas_address = 0;
966 			}
967 			break;
968 		}
969 	}
970 
971 	for (i = 0; i < sas_node->num_phys; i++) {
972 		if (sas_node->phy[i].remote_identify.sas_address == sas_address)
973 			memset(&sas_node->phy[i].remote_identify, 0 ,
974 			    sizeof(struct sas_identify));
975 	}
976 
977 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
978 
979 	list_for_each_entry_safe(mpt3sas_phy, next_phy,
980 	    &mpt3sas_port->phy_list, port_siblings) {
981 		if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
982 			dev_printk(KERN_INFO, &mpt3sas_port->port->dev,
983 			    "remove: sas_addr(0x%016llx), phy(%d)\n",
984 			    (unsigned long long)
985 			    mpt3sas_port->remote_identify.sas_address,
986 			    mpt3sas_phy->phy_id);
987 		mpt3sas_phy->phy_belongs_to_port = 0;
988 		if (!ioc->remove_host)
989 			sas_port_delete_phy(mpt3sas_port->port,
990 						mpt3sas_phy->phy);
991 		list_del(&mpt3sas_phy->port_siblings);
992 	}
993 	if (!ioc->remove_host)
994 		sas_port_delete(mpt3sas_port->port);
995 	ioc_info(ioc, "%s: removed: sas_addr(0x%016llx)\n",
996 	    __func__, (unsigned long long)sas_address);
997 	kfree(mpt3sas_port);
998 }
999 
1000 /**
1001  * mpt3sas_transport_add_host_phy - report sas_host phy to transport
1002  * @ioc: per adapter object
1003  * @mpt3sas_phy: mpt3sas per phy object
1004  * @phy_pg0: sas phy page 0
1005  * @parent_dev: parent device class object
1006  *
1007  * Return: 0 for success, non-zero for failure.
1008  */
1009 int
1010 mpt3sas_transport_add_host_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
1011 	*mpt3sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
1012 {
1013 	struct sas_phy *phy;
1014 	int phy_index = mpt3sas_phy->phy_id;
1015 
1016 
1017 	INIT_LIST_HEAD(&mpt3sas_phy->port_siblings);
1018 	phy = sas_phy_alloc(parent_dev, phy_index);
1019 	if (!phy) {
1020 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1021 			__FILE__, __LINE__, __func__);
1022 		return -1;
1023 	}
1024 	if ((_transport_set_identify(ioc, mpt3sas_phy->handle,
1025 	    &mpt3sas_phy->identify))) {
1026 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1027 			__FILE__, __LINE__, __func__);
1028 		sas_phy_free(phy);
1029 		return -1;
1030 	}
1031 	phy->identify = mpt3sas_phy->identify;
1032 	mpt3sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
1033 	if (mpt3sas_phy->attached_handle)
1034 		_transport_set_identify(ioc, mpt3sas_phy->attached_handle,
1035 		    &mpt3sas_phy->remote_identify);
1036 	phy->identify.phy_identifier = mpt3sas_phy->phy_id;
1037 	phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1038 	    phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1039 	phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
1040 	    phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
1041 	phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
1042 	    phy_pg0.HwLinkRate >> 4);
1043 	phy->minimum_linkrate = _transport_convert_phy_link_rate(
1044 	    phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1045 	phy->maximum_linkrate = _transport_convert_phy_link_rate(
1046 	    phy_pg0.ProgrammedLinkRate >> 4);
1047 	phy->hostdata = mpt3sas_phy->port;
1048 
1049 	if ((sas_phy_add(phy))) {
1050 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1051 			__FILE__, __LINE__, __func__);
1052 		sas_phy_free(phy);
1053 		return -1;
1054 	}
1055 	if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1056 		dev_printk(KERN_INFO, &phy->dev,
1057 		    "add: handle(0x%04x), sas_addr(0x%016llx)\n"
1058 		    "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1059 		    mpt3sas_phy->handle, (unsigned long long)
1060 		    mpt3sas_phy->identify.sas_address,
1061 		    mpt3sas_phy->attached_handle,
1062 		    (unsigned long long)
1063 		    mpt3sas_phy->remote_identify.sas_address);
1064 	mpt3sas_phy->phy = phy;
1065 	return 0;
1066 }
1067 
1068 
1069 /**
1070  * mpt3sas_transport_add_expander_phy - report expander phy to transport
1071  * @ioc: per adapter object
1072  * @mpt3sas_phy: mpt3sas per phy object
1073  * @expander_pg1: expander page 1
1074  * @parent_dev: parent device class object
1075  *
1076  * Return: 0 for success, non-zero for failure.
1077  */
1078 int
1079 mpt3sas_transport_add_expander_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
1080 	*mpt3sas_phy, Mpi2ExpanderPage1_t expander_pg1,
1081 	struct device *parent_dev)
1082 {
1083 	struct sas_phy *phy;
1084 	int phy_index = mpt3sas_phy->phy_id;
1085 
1086 	INIT_LIST_HEAD(&mpt3sas_phy->port_siblings);
1087 	phy = sas_phy_alloc(parent_dev, phy_index);
1088 	if (!phy) {
1089 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1090 			__FILE__, __LINE__, __func__);
1091 		return -1;
1092 	}
1093 	if ((_transport_set_identify(ioc, mpt3sas_phy->handle,
1094 	    &mpt3sas_phy->identify))) {
1095 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1096 			__FILE__, __LINE__, __func__);
1097 		sas_phy_free(phy);
1098 		return -1;
1099 	}
1100 	phy->identify = mpt3sas_phy->identify;
1101 	mpt3sas_phy->attached_handle =
1102 	    le16_to_cpu(expander_pg1.AttachedDevHandle);
1103 	if (mpt3sas_phy->attached_handle)
1104 		_transport_set_identify(ioc, mpt3sas_phy->attached_handle,
1105 		    &mpt3sas_phy->remote_identify);
1106 	phy->identify.phy_identifier = mpt3sas_phy->phy_id;
1107 	phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1108 	    expander_pg1.NegotiatedLinkRate &
1109 	    MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1110 	phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
1111 	    expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
1112 	phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
1113 	    expander_pg1.HwLinkRate >> 4);
1114 	phy->minimum_linkrate = _transport_convert_phy_link_rate(
1115 	    expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1116 	phy->maximum_linkrate = _transport_convert_phy_link_rate(
1117 	    expander_pg1.ProgrammedLinkRate >> 4);
1118 	phy->hostdata = mpt3sas_phy->port;
1119 
1120 	if ((sas_phy_add(phy))) {
1121 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1122 			__FILE__, __LINE__, __func__);
1123 		sas_phy_free(phy);
1124 		return -1;
1125 	}
1126 	if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1127 		dev_printk(KERN_INFO, &phy->dev,
1128 		    "add: handle(0x%04x), sas_addr(0x%016llx)\n"
1129 		    "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1130 		    mpt3sas_phy->handle, (unsigned long long)
1131 		    mpt3sas_phy->identify.sas_address,
1132 		    mpt3sas_phy->attached_handle,
1133 		    (unsigned long long)
1134 		    mpt3sas_phy->remote_identify.sas_address);
1135 	mpt3sas_phy->phy = phy;
1136 	return 0;
1137 }
1138 
1139 /**
1140  * mpt3sas_transport_update_links - refreshing phy link changes
1141  * @ioc: per adapter object
1142  * @sas_address: sas address of parent expander or sas host
1143  * @handle: attached device handle
1144  * @phy_number: phy number
1145  * @link_rate: new link rate
1146  * @port: hba port entry
1147  *
1148  * Return nothing.
1149  */
1150 void
1151 mpt3sas_transport_update_links(struct MPT3SAS_ADAPTER *ioc,
1152 	u64 sas_address, u16 handle, u8 phy_number, u8 link_rate,
1153 	struct hba_port *port)
1154 {
1155 	unsigned long flags;
1156 	struct _sas_node *sas_node;
1157 	struct _sas_phy *mpt3sas_phy;
1158 	struct hba_port *hba_port = NULL;
1159 
1160 	if (ioc->shost_recovery || ioc->pci_error_recovery)
1161 		return;
1162 
1163 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
1164 	sas_node = _transport_sas_node_find_by_sas_address(ioc,
1165 	    sas_address, port);
1166 	if (!sas_node) {
1167 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1168 		return;
1169 	}
1170 
1171 	mpt3sas_phy = &sas_node->phy[phy_number];
1172 	mpt3sas_phy->attached_handle = handle;
1173 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1174 	if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5)) {
1175 		_transport_set_identify(ioc, handle,
1176 		    &mpt3sas_phy->remote_identify);
1177 		if ((sas_node->handle <= ioc->sas_hba.num_phys) &&
1178 		    (ioc->multipath_on_hba)) {
1179 			list_for_each_entry(hba_port,
1180 			    &ioc->port_table_list, list) {
1181 				if (hba_port->sas_address == sas_address &&
1182 				    hba_port == port)
1183 					hba_port->phy_mask |=
1184 					    (1 << mpt3sas_phy->phy_id);
1185 			}
1186 		}
1187 		mpt3sas_transport_add_phy_to_an_existing_port(ioc, sas_node,
1188 		    mpt3sas_phy, mpt3sas_phy->remote_identify.sas_address,
1189 		    port);
1190 	} else
1191 		memset(&mpt3sas_phy->remote_identify, 0 , sizeof(struct
1192 		    sas_identify));
1193 
1194 	if (mpt3sas_phy->phy)
1195 		mpt3sas_phy->phy->negotiated_linkrate =
1196 		    _transport_convert_phy_link_rate(link_rate);
1197 
1198 	if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1199 		dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
1200 		    "refresh: parent sas_addr(0x%016llx),\n"
1201 		    "\tlink_rate(0x%02x), phy(%d)\n"
1202 		    "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1203 		    (unsigned long long)sas_address,
1204 		    link_rate, phy_number, handle, (unsigned long long)
1205 		    mpt3sas_phy->remote_identify.sas_address);
1206 }
1207 
1208 static inline void *
1209 phy_to_ioc(struct sas_phy *phy)
1210 {
1211 	struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1212 	return shost_priv(shost);
1213 }
1214 
1215 static inline void *
1216 rphy_to_ioc(struct sas_rphy *rphy)
1217 {
1218 	struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1219 	return shost_priv(shost);
1220 }
1221 
1222 /* report phy error log structure */
1223 struct phy_error_log_request {
1224 	u8 smp_frame_type; /* 0x40 */
1225 	u8 function; /* 0x11 */
1226 	u8 allocated_response_length;
1227 	u8 request_length; /* 02 */
1228 	u8 reserved_1[5];
1229 	u8 phy_identifier;
1230 	u8 reserved_2[2];
1231 };
1232 
1233 /* report phy error log reply structure */
1234 struct phy_error_log_reply {
1235 	u8 smp_frame_type; /* 0x41 */
1236 	u8 function; /* 0x11 */
1237 	u8 function_result;
1238 	u8 response_length;
1239 	__be16 expander_change_count;
1240 	u8 reserved_1[3];
1241 	u8 phy_identifier;
1242 	u8 reserved_2[2];
1243 	__be32 invalid_dword;
1244 	__be32 running_disparity_error;
1245 	__be32 loss_of_dword_sync;
1246 	__be32 phy_reset_problem;
1247 };
1248 
1249 /**
1250  * _transport_get_expander_phy_error_log - return expander counters
1251  * @ioc: per adapter object
1252  * @phy: The sas phy object
1253  *
1254  * Return: 0 for success, non-zero for failure.
1255  *
1256  */
1257 static int
1258 _transport_get_expander_phy_error_log(struct MPT3SAS_ADAPTER *ioc,
1259 	struct sas_phy *phy)
1260 {
1261 	Mpi2SmpPassthroughRequest_t *mpi_request;
1262 	Mpi2SmpPassthroughReply_t *mpi_reply;
1263 	struct phy_error_log_request *phy_error_log_request;
1264 	struct phy_error_log_reply *phy_error_log_reply;
1265 	int rc;
1266 	u16 smid;
1267 	void *psge;
1268 	u8 issue_reset = 0;
1269 	void *data_out = NULL;
1270 	dma_addr_t data_out_dma;
1271 	u32 sz;
1272 
1273 	if (ioc->shost_recovery || ioc->pci_error_recovery) {
1274 		ioc_info(ioc, "%s: host reset in progress!\n", __func__);
1275 		return -EFAULT;
1276 	}
1277 
1278 	mutex_lock(&ioc->transport_cmds.mutex);
1279 
1280 	if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1281 		ioc_err(ioc, "%s: transport_cmds in use\n", __func__);
1282 		rc = -EAGAIN;
1283 		goto out;
1284 	}
1285 	ioc->transport_cmds.status = MPT3_CMD_PENDING;
1286 
1287 	rc = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT);
1288 	if (rc)
1289 		goto out;
1290 
1291 	smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
1292 	if (!smid) {
1293 		ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
1294 		rc = -EAGAIN;
1295 		goto out;
1296 	}
1297 
1298 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1299 	ioc->transport_cmds.smid = smid;
1300 
1301 	sz = sizeof(struct phy_error_log_request) +
1302 	    sizeof(struct phy_error_log_reply);
1303 	data_out = dma_alloc_coherent(&ioc->pdev->dev, sz, &data_out_dma,
1304 			GFP_KERNEL);
1305 	if (!data_out) {
1306 		pr_err("failure at %s:%d/%s()!\n", __FILE__,
1307 		    __LINE__, __func__);
1308 		rc = -ENOMEM;
1309 		mpt3sas_base_free_smid(ioc, smid);
1310 		goto out;
1311 	}
1312 
1313 	rc = -EINVAL;
1314 	memset(data_out, 0, sz);
1315 	phy_error_log_request = data_out;
1316 	phy_error_log_request->smp_frame_type = 0x40;
1317 	phy_error_log_request->function = 0x11;
1318 	phy_error_log_request->request_length = 2;
1319 	phy_error_log_request->allocated_response_length = 0;
1320 	phy_error_log_request->phy_identifier = phy->number;
1321 
1322 	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1323 	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1324 	mpi_request->PhysicalPort = _transport_get_port_id_by_sas_phy(phy);
1325 	mpi_request->VF_ID = 0; /* TODO */
1326 	mpi_request->VP_ID = 0;
1327 	mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1328 	mpi_request->RequestDataLength =
1329 	    cpu_to_le16(sizeof(struct phy_error_log_request));
1330 	psge = &mpi_request->SGL;
1331 
1332 	ioc->build_sg(ioc, psge, data_out_dma,
1333 		sizeof(struct phy_error_log_request),
1334 	    data_out_dma + sizeof(struct phy_error_log_request),
1335 	    sizeof(struct phy_error_log_reply));
1336 
1337 	dtransportprintk(ioc,
1338 			 ioc_info(ioc, "phy_error_log - send to sas_addr(0x%016llx), phy(%d)\n",
1339 				  (u64)phy->identify.sas_address,
1340 				  phy->number));
1341 	init_completion(&ioc->transport_cmds.done);
1342 	ioc->put_smid_default(ioc, smid);
1343 	wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
1344 
1345 	if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
1346 		ioc_err(ioc, "%s: timeout\n", __func__);
1347 		_debug_dump_mf(mpi_request,
1348 		    sizeof(Mpi2SmpPassthroughRequest_t)/4);
1349 		if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
1350 			issue_reset = 1;
1351 		goto issue_host_reset;
1352 	}
1353 
1354 	dtransportprintk(ioc, ioc_info(ioc, "phy_error_log - complete\n"));
1355 
1356 	if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
1357 
1358 		mpi_reply = ioc->transport_cmds.reply;
1359 
1360 		dtransportprintk(ioc,
1361 				 ioc_info(ioc, "phy_error_log - reply data transfer size(%d)\n",
1362 					  le16_to_cpu(mpi_reply->ResponseDataLength)));
1363 
1364 		if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1365 		    sizeof(struct phy_error_log_reply))
1366 			goto out;
1367 
1368 		phy_error_log_reply = data_out +
1369 		    sizeof(struct phy_error_log_request);
1370 
1371 		dtransportprintk(ioc,
1372 				 ioc_info(ioc, "phy_error_log - function_result(%d)\n",
1373 					  phy_error_log_reply->function_result));
1374 
1375 		phy->invalid_dword_count =
1376 		    be32_to_cpu(phy_error_log_reply->invalid_dword);
1377 		phy->running_disparity_error_count =
1378 		    be32_to_cpu(phy_error_log_reply->running_disparity_error);
1379 		phy->loss_of_dword_sync_count =
1380 		    be32_to_cpu(phy_error_log_reply->loss_of_dword_sync);
1381 		phy->phy_reset_problem_count =
1382 		    be32_to_cpu(phy_error_log_reply->phy_reset_problem);
1383 		rc = 0;
1384 	} else
1385 		dtransportprintk(ioc,
1386 				 ioc_info(ioc, "phy_error_log - no reply\n"));
1387 
1388  issue_host_reset:
1389 	if (issue_reset)
1390 		mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1391  out:
1392 	ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
1393 	if (data_out)
1394 		dma_free_coherent(&ioc->pdev->dev, sz, data_out, data_out_dma);
1395 
1396 	mutex_unlock(&ioc->transport_cmds.mutex);
1397 	return rc;
1398 }
1399 
1400 /**
1401  * _transport_get_linkerrors - return phy counters for both hba and expanders
1402  * @phy: The sas phy object
1403  *
1404  * Return: 0 for success, non-zero for failure.
1405  *
1406  */
1407 static int
1408 _transport_get_linkerrors(struct sas_phy *phy)
1409 {
1410 	struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1411 	unsigned long flags;
1412 	Mpi2ConfigReply_t mpi_reply;
1413 	Mpi2SasPhyPage1_t phy_pg1;
1414 	struct hba_port *port = phy->hostdata;
1415 	int port_id = port->port_id;
1416 
1417 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
1418 	if (_transport_sas_node_find_by_sas_address(ioc,
1419 	    phy->identify.sas_address,
1420 	    mpt3sas_get_port_by_id(ioc, port_id, 0)) == NULL) {
1421 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1422 		return -EINVAL;
1423 	}
1424 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1425 
1426 	if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1427 		return _transport_get_expander_phy_error_log(ioc, phy);
1428 
1429 	/* get hba phy error logs */
1430 	if ((mpt3sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
1431 		    phy->number))) {
1432 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1433 			__FILE__, __LINE__, __func__);
1434 		return -ENXIO;
1435 	}
1436 
1437 	if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1438 		ioc_info(ioc, "phy(%d), ioc_status (0x%04x), loginfo(0x%08x)\n",
1439 			 phy->number,
1440 			 le16_to_cpu(mpi_reply.IOCStatus),
1441 			 le32_to_cpu(mpi_reply.IOCLogInfo));
1442 
1443 	phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
1444 	phy->running_disparity_error_count =
1445 	    le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
1446 	phy->loss_of_dword_sync_count =
1447 	    le32_to_cpu(phy_pg1.LossDwordSynchCount);
1448 	phy->phy_reset_problem_count =
1449 	    le32_to_cpu(phy_pg1.PhyResetProblemCount);
1450 	return 0;
1451 }
1452 
1453 /**
1454  * _transport_get_enclosure_identifier -
1455  * @rphy: The sas phy object
1456  * @identifier: ?
1457  *
1458  * Obtain the enclosure logical id for an expander.
1459  * Return: 0 for success, non-zero for failure.
1460  */
1461 static int
1462 _transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
1463 {
1464 	struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1465 	struct _sas_device *sas_device;
1466 	unsigned long flags;
1467 	int rc;
1468 
1469 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
1470 	sas_device = __mpt3sas_get_sdev_by_rphy(ioc, rphy);
1471 	if (sas_device) {
1472 		*identifier = sas_device->enclosure_logical_id;
1473 		rc = 0;
1474 		sas_device_put(sas_device);
1475 	} else {
1476 		*identifier = 0;
1477 		rc = -ENXIO;
1478 	}
1479 
1480 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1481 	return rc;
1482 }
1483 
1484 /**
1485  * _transport_get_bay_identifier -
1486  * @rphy: The sas phy object
1487  *
1488  * Return: the slot id for a device that resides inside an enclosure.
1489  */
1490 static int
1491 _transport_get_bay_identifier(struct sas_rphy *rphy)
1492 {
1493 	struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1494 	struct _sas_device *sas_device;
1495 	unsigned long flags;
1496 	int rc;
1497 
1498 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
1499 	sas_device = __mpt3sas_get_sdev_by_rphy(ioc, rphy);
1500 	if (sas_device) {
1501 		rc = sas_device->slot;
1502 		sas_device_put(sas_device);
1503 	} else {
1504 		rc = -ENXIO;
1505 	}
1506 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1507 	return rc;
1508 }
1509 
1510 /* phy control request structure */
1511 struct phy_control_request {
1512 	u8 smp_frame_type; /* 0x40 */
1513 	u8 function; /* 0x91 */
1514 	u8 allocated_response_length;
1515 	u8 request_length; /* 0x09 */
1516 	u16 expander_change_count;
1517 	u8 reserved_1[3];
1518 	u8 phy_identifier;
1519 	u8 phy_operation;
1520 	u8 reserved_2[13];
1521 	u64 attached_device_name;
1522 	u8 programmed_min_physical_link_rate;
1523 	u8 programmed_max_physical_link_rate;
1524 	u8 reserved_3[6];
1525 };
1526 
1527 /* phy control reply structure */
1528 struct phy_control_reply {
1529 	u8 smp_frame_type; /* 0x41 */
1530 	u8 function; /* 0x11 */
1531 	u8 function_result;
1532 	u8 response_length;
1533 };
1534 
1535 #define SMP_PHY_CONTROL_LINK_RESET	(0x01)
1536 #define SMP_PHY_CONTROL_HARD_RESET	(0x02)
1537 #define SMP_PHY_CONTROL_DISABLE		(0x03)
1538 
1539 /**
1540  * _transport_expander_phy_control - expander phy control
1541  * @ioc: per adapter object
1542  * @phy: The sas phy object
1543  * @phy_operation: ?
1544  *
1545  * Return: 0 for success, non-zero for failure.
1546  *
1547  */
1548 static int
1549 _transport_expander_phy_control(struct MPT3SAS_ADAPTER *ioc,
1550 	struct sas_phy *phy, u8 phy_operation)
1551 {
1552 	Mpi2SmpPassthroughRequest_t *mpi_request;
1553 	Mpi2SmpPassthroughReply_t *mpi_reply;
1554 	struct phy_control_request *phy_control_request;
1555 	struct phy_control_reply *phy_control_reply;
1556 	int rc;
1557 	u16 smid;
1558 	void *psge;
1559 	u8 issue_reset = 0;
1560 	void *data_out = NULL;
1561 	dma_addr_t data_out_dma;
1562 	u32 sz;
1563 
1564 	if (ioc->shost_recovery || ioc->pci_error_recovery) {
1565 		ioc_info(ioc, "%s: host reset in progress!\n", __func__);
1566 		return -EFAULT;
1567 	}
1568 
1569 	mutex_lock(&ioc->transport_cmds.mutex);
1570 
1571 	if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1572 		ioc_err(ioc, "%s: transport_cmds in use\n", __func__);
1573 		rc = -EAGAIN;
1574 		goto out;
1575 	}
1576 	ioc->transport_cmds.status = MPT3_CMD_PENDING;
1577 
1578 	rc = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT);
1579 	if (rc)
1580 		goto out;
1581 
1582 	smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
1583 	if (!smid) {
1584 		ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
1585 		rc = -EAGAIN;
1586 		goto out;
1587 	}
1588 
1589 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1590 	ioc->transport_cmds.smid = smid;
1591 
1592 	sz = sizeof(struct phy_control_request) +
1593 	    sizeof(struct phy_control_reply);
1594 	data_out = dma_alloc_coherent(&ioc->pdev->dev, sz, &data_out_dma,
1595 			GFP_KERNEL);
1596 	if (!data_out) {
1597 		pr_err("failure at %s:%d/%s()!\n", __FILE__,
1598 		    __LINE__, __func__);
1599 		rc = -ENOMEM;
1600 		mpt3sas_base_free_smid(ioc, smid);
1601 		goto out;
1602 	}
1603 
1604 	rc = -EINVAL;
1605 	memset(data_out, 0, sz);
1606 	phy_control_request = data_out;
1607 	phy_control_request->smp_frame_type = 0x40;
1608 	phy_control_request->function = 0x91;
1609 	phy_control_request->request_length = 9;
1610 	phy_control_request->allocated_response_length = 0;
1611 	phy_control_request->phy_identifier = phy->number;
1612 	phy_control_request->phy_operation = phy_operation;
1613 	phy_control_request->programmed_min_physical_link_rate =
1614 	    phy->minimum_linkrate << 4;
1615 	phy_control_request->programmed_max_physical_link_rate =
1616 	    phy->maximum_linkrate << 4;
1617 
1618 	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1619 	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1620 	mpi_request->PhysicalPort = _transport_get_port_id_by_sas_phy(phy);
1621 	mpi_request->VF_ID = 0; /* TODO */
1622 	mpi_request->VP_ID = 0;
1623 	mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1624 	mpi_request->RequestDataLength =
1625 	    cpu_to_le16(sizeof(struct phy_error_log_request));
1626 	psge = &mpi_request->SGL;
1627 
1628 	ioc->build_sg(ioc, psge, data_out_dma,
1629 			    sizeof(struct phy_control_request),
1630 	    data_out_dma + sizeof(struct phy_control_request),
1631 	    sizeof(struct phy_control_reply));
1632 
1633 	dtransportprintk(ioc,
1634 			 ioc_info(ioc, "phy_control - send to sas_addr(0x%016llx), phy(%d), opcode(%d)\n",
1635 				  (u64)phy->identify.sas_address,
1636 				  phy->number, phy_operation));
1637 	init_completion(&ioc->transport_cmds.done);
1638 	ioc->put_smid_default(ioc, smid);
1639 	wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
1640 
1641 	if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
1642 		ioc_err(ioc, "%s: timeout\n", __func__);
1643 		_debug_dump_mf(mpi_request,
1644 		    sizeof(Mpi2SmpPassthroughRequest_t)/4);
1645 		if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
1646 			issue_reset = 1;
1647 		goto issue_host_reset;
1648 	}
1649 
1650 	dtransportprintk(ioc, ioc_info(ioc, "phy_control - complete\n"));
1651 
1652 	if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
1653 
1654 		mpi_reply = ioc->transport_cmds.reply;
1655 
1656 		dtransportprintk(ioc,
1657 				 ioc_info(ioc, "phy_control - reply data transfer size(%d)\n",
1658 					  le16_to_cpu(mpi_reply->ResponseDataLength)));
1659 
1660 		if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1661 		    sizeof(struct phy_control_reply))
1662 			goto out;
1663 
1664 		phy_control_reply = data_out +
1665 		    sizeof(struct phy_control_request);
1666 
1667 		dtransportprintk(ioc,
1668 				 ioc_info(ioc, "phy_control - function_result(%d)\n",
1669 					  phy_control_reply->function_result));
1670 
1671 		rc = 0;
1672 	} else
1673 		dtransportprintk(ioc,
1674 				 ioc_info(ioc, "phy_control - no reply\n"));
1675 
1676  issue_host_reset:
1677 	if (issue_reset)
1678 		mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1679  out:
1680 	ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
1681 	if (data_out)
1682 		dma_free_coherent(&ioc->pdev->dev, sz, data_out,
1683 				data_out_dma);
1684 
1685 	mutex_unlock(&ioc->transport_cmds.mutex);
1686 	return rc;
1687 }
1688 
1689 /**
1690  * _transport_phy_reset -
1691  * @phy: The sas phy object
1692  * @hard_reset:
1693  *
1694  * Return: 0 for success, non-zero for failure.
1695  */
1696 static int
1697 _transport_phy_reset(struct sas_phy *phy, int hard_reset)
1698 {
1699 	struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1700 	Mpi2SasIoUnitControlReply_t mpi_reply;
1701 	Mpi2SasIoUnitControlRequest_t mpi_request;
1702 	struct hba_port *port = phy->hostdata;
1703 	int port_id = port->port_id;
1704 	unsigned long flags;
1705 
1706 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
1707 	if (_transport_sas_node_find_by_sas_address(ioc,
1708 	    phy->identify.sas_address,
1709 	    mpt3sas_get_port_by_id(ioc, port_id, 0)) == NULL) {
1710 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1711 		return -EINVAL;
1712 	}
1713 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1714 
1715 	/* handle expander phys */
1716 	if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1717 		return _transport_expander_phy_control(ioc, phy,
1718 		    (hard_reset == 1) ? SMP_PHY_CONTROL_HARD_RESET :
1719 		    SMP_PHY_CONTROL_LINK_RESET);
1720 
1721 	/* handle hba phys */
1722 	memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
1723 	mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
1724 	mpi_request.Operation = hard_reset ?
1725 	    MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
1726 	mpi_request.PhyNum = phy->number;
1727 
1728 	if ((mpt3sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
1729 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1730 			__FILE__, __LINE__, __func__);
1731 		return -ENXIO;
1732 	}
1733 
1734 	if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1735 		ioc_info(ioc, "phy(%d), ioc_status(0x%04x), loginfo(0x%08x)\n",
1736 			 phy->number, le16_to_cpu(mpi_reply.IOCStatus),
1737 			 le32_to_cpu(mpi_reply.IOCLogInfo));
1738 
1739 	return 0;
1740 }
1741 
1742 /**
1743  * _transport_phy_enable - enable/disable phys
1744  * @phy: The sas phy object
1745  * @enable: enable phy when true
1746  *
1747  * Only support sas_host direct attached phys.
1748  * Return: 0 for success, non-zero for failure.
1749  */
1750 static int
1751 _transport_phy_enable(struct sas_phy *phy, int enable)
1752 {
1753 	struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1754 	Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1755 	Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
1756 	Mpi2ConfigReply_t mpi_reply;
1757 	u16 ioc_status;
1758 	u16 sz;
1759 	int rc = 0;
1760 	unsigned long flags;
1761 	int i, discovery_active;
1762 	struct hba_port *port = phy->hostdata;
1763 	int port_id = port->port_id;
1764 
1765 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
1766 	if (_transport_sas_node_find_by_sas_address(ioc,
1767 	    phy->identify.sas_address,
1768 	    mpt3sas_get_port_by_id(ioc, port_id, 0)) == NULL) {
1769 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1770 		return -EINVAL;
1771 	}
1772 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1773 
1774 	/* handle expander phys */
1775 	if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1776 		return _transport_expander_phy_control(ioc, phy,
1777 		    (enable == 1) ? SMP_PHY_CONTROL_LINK_RESET :
1778 		    SMP_PHY_CONTROL_DISABLE);
1779 
1780 	/* handle hba phys */
1781 
1782 	/* read sas_iounit page 0 */
1783 	sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys *
1784 	    sizeof(Mpi2SasIOUnit0PhyData_t));
1785 	sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
1786 	if (!sas_iounit_pg0) {
1787 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1788 			__FILE__, __LINE__, __func__);
1789 		rc = -ENOMEM;
1790 		goto out;
1791 	}
1792 	if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
1793 	    sas_iounit_pg0, sz))) {
1794 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1795 			__FILE__, __LINE__, __func__);
1796 		rc = -ENXIO;
1797 		goto out;
1798 	}
1799 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1800 	    MPI2_IOCSTATUS_MASK;
1801 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1802 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1803 			__FILE__, __LINE__, __func__);
1804 		rc = -EIO;
1805 		goto out;
1806 	}
1807 
1808 	/* unable to enable/disable phys when when discovery is active */
1809 	for (i = 0, discovery_active = 0; i < ioc->sas_hba.num_phys ; i++) {
1810 		if (sas_iounit_pg0->PhyData[i].PortFlags &
1811 		    MPI2_SASIOUNIT0_PORTFLAGS_DISCOVERY_IN_PROGRESS) {
1812 			ioc_err(ioc, "discovery is active on port = %d, phy = %d: unable to enable/disable phys, try again later!\n",
1813 				sas_iounit_pg0->PhyData[i].Port, i);
1814 			discovery_active = 1;
1815 		}
1816 	}
1817 
1818 	if (discovery_active) {
1819 		rc = -EAGAIN;
1820 		goto out;
1821 	}
1822 
1823 	/* read sas_iounit page 1 */
1824 	sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1825 	    sizeof(Mpi2SasIOUnit1PhyData_t));
1826 	sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1827 	if (!sas_iounit_pg1) {
1828 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1829 			__FILE__, __LINE__, __func__);
1830 		rc = -ENOMEM;
1831 		goto out;
1832 	}
1833 	if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1834 	    sas_iounit_pg1, sz))) {
1835 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1836 			__FILE__, __LINE__, __func__);
1837 		rc = -ENXIO;
1838 		goto out;
1839 	}
1840 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1841 	    MPI2_IOCSTATUS_MASK;
1842 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1843 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1844 			__FILE__, __LINE__, __func__);
1845 		rc = -EIO;
1846 		goto out;
1847 	}
1848 
1849 	/* copy Port/PortFlags/PhyFlags from page 0 */
1850 	for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
1851 		sas_iounit_pg1->PhyData[i].Port =
1852 		    sas_iounit_pg0->PhyData[i].Port;
1853 		sas_iounit_pg1->PhyData[i].PortFlags =
1854 		    (sas_iounit_pg0->PhyData[i].PortFlags &
1855 		    MPI2_SASIOUNIT0_PORTFLAGS_AUTO_PORT_CONFIG);
1856 		sas_iounit_pg1->PhyData[i].PhyFlags =
1857 		    (sas_iounit_pg0->PhyData[i].PhyFlags &
1858 		    (MPI2_SASIOUNIT0_PHYFLAGS_ZONING_ENABLED +
1859 		    MPI2_SASIOUNIT0_PHYFLAGS_PHY_DISABLED));
1860 	}
1861 
1862 	if (enable)
1863 		sas_iounit_pg1->PhyData[phy->number].PhyFlags
1864 		    &= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1865 	else
1866 		sas_iounit_pg1->PhyData[phy->number].PhyFlags
1867 		    |= MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1868 
1869 	mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, sz);
1870 
1871 	/* link reset */
1872 	if (enable)
1873 		_transport_phy_reset(phy, 0);
1874 
1875  out:
1876 	kfree(sas_iounit_pg1);
1877 	kfree(sas_iounit_pg0);
1878 	return rc;
1879 }
1880 
1881 /**
1882  * _transport_phy_speed - set phy min/max link rates
1883  * @phy: The sas phy object
1884  * @rates: rates defined in sas_phy_linkrates
1885  *
1886  * Only support sas_host direct attached phys.
1887  *
1888  * Return: 0 for success, non-zero for failure.
1889  */
1890 static int
1891 _transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
1892 {
1893 	struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1894 	Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1895 	Mpi2SasPhyPage0_t phy_pg0;
1896 	Mpi2ConfigReply_t mpi_reply;
1897 	u16 ioc_status;
1898 	u16 sz;
1899 	int i;
1900 	int rc = 0;
1901 	unsigned long flags;
1902 	struct hba_port *port = phy->hostdata;
1903 	int port_id = port->port_id;
1904 
1905 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
1906 	if (_transport_sas_node_find_by_sas_address(ioc,
1907 	    phy->identify.sas_address,
1908 	    mpt3sas_get_port_by_id(ioc, port_id, 0)) == NULL) {
1909 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1910 		return -EINVAL;
1911 	}
1912 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1913 
1914 	if (!rates->minimum_linkrate)
1915 		rates->minimum_linkrate = phy->minimum_linkrate;
1916 	else if (rates->minimum_linkrate < phy->minimum_linkrate_hw)
1917 		rates->minimum_linkrate = phy->minimum_linkrate_hw;
1918 
1919 	if (!rates->maximum_linkrate)
1920 		rates->maximum_linkrate = phy->maximum_linkrate;
1921 	else if (rates->maximum_linkrate > phy->maximum_linkrate_hw)
1922 		rates->maximum_linkrate = phy->maximum_linkrate_hw;
1923 
1924 	/* handle expander phys */
1925 	if (phy->identify.sas_address != ioc->sas_hba.sas_address) {
1926 		phy->minimum_linkrate = rates->minimum_linkrate;
1927 		phy->maximum_linkrate = rates->maximum_linkrate;
1928 		return _transport_expander_phy_control(ioc, phy,
1929 		    SMP_PHY_CONTROL_LINK_RESET);
1930 	}
1931 
1932 	/* handle hba phys */
1933 
1934 	/* sas_iounit page 1 */
1935 	sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1936 	    sizeof(Mpi2SasIOUnit1PhyData_t));
1937 	sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1938 	if (!sas_iounit_pg1) {
1939 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1940 			__FILE__, __LINE__, __func__);
1941 		rc = -ENOMEM;
1942 		goto out;
1943 	}
1944 	if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1945 	    sas_iounit_pg1, sz))) {
1946 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1947 			__FILE__, __LINE__, __func__);
1948 		rc = -ENXIO;
1949 		goto out;
1950 	}
1951 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1952 	    MPI2_IOCSTATUS_MASK;
1953 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1954 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1955 			__FILE__, __LINE__, __func__);
1956 		rc = -EIO;
1957 		goto out;
1958 	}
1959 
1960 	for (i = 0; i < ioc->sas_hba.num_phys; i++) {
1961 		if (phy->number != i) {
1962 			sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1963 			    (ioc->sas_hba.phy[i].phy->minimum_linkrate +
1964 			    (ioc->sas_hba.phy[i].phy->maximum_linkrate << 4));
1965 		} else {
1966 			sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1967 			    (rates->minimum_linkrate +
1968 			    (rates->maximum_linkrate << 4));
1969 		}
1970 	}
1971 
1972 	if (mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
1973 	    sz)) {
1974 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1975 			__FILE__, __LINE__, __func__);
1976 		rc = -ENXIO;
1977 		goto out;
1978 	}
1979 
1980 	/* link reset */
1981 	_transport_phy_reset(phy, 0);
1982 
1983 	/* read phy page 0, then update the rates in the sas transport phy */
1984 	if (!mpt3sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
1985 	    phy->number)) {
1986 		phy->minimum_linkrate = _transport_convert_phy_link_rate(
1987 		    phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1988 		phy->maximum_linkrate = _transport_convert_phy_link_rate(
1989 		    phy_pg0.ProgrammedLinkRate >> 4);
1990 		phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1991 		    phy_pg0.NegotiatedLinkRate &
1992 		    MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1993 	}
1994 
1995  out:
1996 	kfree(sas_iounit_pg1);
1997 	return rc;
1998 }
1999 
2000 static int
2001 _transport_map_smp_buffer(struct device *dev, struct bsg_buffer *buf,
2002 		dma_addr_t *dma_addr, size_t *dma_len, void **p)
2003 {
2004 	/* Check if the request is split across multiple segments */
2005 	if (buf->sg_cnt > 1) {
2006 		*p = dma_alloc_coherent(dev, buf->payload_len, dma_addr,
2007 				GFP_KERNEL);
2008 		if (!*p)
2009 			return -ENOMEM;
2010 		*dma_len = buf->payload_len;
2011 	} else {
2012 		if (!dma_map_sg(dev, buf->sg_list, 1, DMA_BIDIRECTIONAL))
2013 			return -ENOMEM;
2014 		*dma_addr = sg_dma_address(buf->sg_list);
2015 		*dma_len = sg_dma_len(buf->sg_list);
2016 		*p = NULL;
2017 	}
2018 
2019 	return 0;
2020 }
2021 
2022 static void
2023 _transport_unmap_smp_buffer(struct device *dev, struct bsg_buffer *buf,
2024 		dma_addr_t dma_addr, void *p)
2025 {
2026 	if (p)
2027 		dma_free_coherent(dev, buf->payload_len, p, dma_addr);
2028 	else
2029 		dma_unmap_sg(dev, buf->sg_list, 1, DMA_BIDIRECTIONAL);
2030 }
2031 
2032 /**
2033  * _transport_smp_handler - transport portal for smp passthru
2034  * @job: ?
2035  * @shost: shost object
2036  * @rphy: sas transport rphy object
2037  *
2038  * This used primarily for smp_utils.
2039  * Example:
2040  *           smp_rep_general /sys/class/bsg/expander-5:0
2041  */
2042 static void
2043 _transport_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
2044 		struct sas_rphy *rphy)
2045 {
2046 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2047 	Mpi2SmpPassthroughRequest_t *mpi_request;
2048 	Mpi2SmpPassthroughReply_t *mpi_reply;
2049 	int rc;
2050 	u16 smid;
2051 	void *psge;
2052 	dma_addr_t dma_addr_in;
2053 	dma_addr_t dma_addr_out;
2054 	void *addr_in = NULL;
2055 	void *addr_out = NULL;
2056 	size_t dma_len_in;
2057 	size_t dma_len_out;
2058 	unsigned int reslen = 0;
2059 
2060 	if (ioc->shost_recovery || ioc->pci_error_recovery) {
2061 		ioc_info(ioc, "%s: host reset in progress!\n", __func__);
2062 		rc = -EFAULT;
2063 		goto job_done;
2064 	}
2065 
2066 	rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
2067 	if (rc)
2068 		goto job_done;
2069 
2070 	if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
2071 		ioc_err(ioc, "%s: transport_cmds in use\n",
2072 			__func__);
2073 		rc = -EAGAIN;
2074 		goto out;
2075 	}
2076 	ioc->transport_cmds.status = MPT3_CMD_PENDING;
2077 
2078 	rc = _transport_map_smp_buffer(&ioc->pdev->dev, &job->request_payload,
2079 			&dma_addr_out, &dma_len_out, &addr_out);
2080 	if (rc)
2081 		goto out;
2082 	if (addr_out) {
2083 		sg_copy_to_buffer(job->request_payload.sg_list,
2084 				job->request_payload.sg_cnt, addr_out,
2085 				job->request_payload.payload_len);
2086 	}
2087 
2088 	rc = _transport_map_smp_buffer(&ioc->pdev->dev, &job->reply_payload,
2089 			&dma_addr_in, &dma_len_in, &addr_in);
2090 	if (rc)
2091 		goto unmap_out;
2092 
2093 	rc = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT);
2094 	if (rc)
2095 		goto unmap_in;
2096 
2097 	smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
2098 	if (!smid) {
2099 		ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
2100 		rc = -EAGAIN;
2101 		goto unmap_in;
2102 	}
2103 
2104 	rc = 0;
2105 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
2106 	ioc->transport_cmds.smid = smid;
2107 
2108 	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
2109 	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
2110 	mpi_request->PhysicalPort = _transport_get_port_id_by_rphy(ioc, rphy);
2111 	mpi_request->SASAddress = (rphy) ?
2112 	    cpu_to_le64(rphy->identify.sas_address) :
2113 	    cpu_to_le64(ioc->sas_hba.sas_address);
2114 	mpi_request->RequestDataLength = cpu_to_le16(dma_len_out - 4);
2115 	psge = &mpi_request->SGL;
2116 
2117 	ioc->build_sg(ioc, psge, dma_addr_out, dma_len_out - 4, dma_addr_in,
2118 			dma_len_in - 4);
2119 
2120 	dtransportprintk(ioc,
2121 			 ioc_info(ioc, "%s: sending smp request\n", __func__));
2122 
2123 	init_completion(&ioc->transport_cmds.done);
2124 	ioc->put_smid_default(ioc, smid);
2125 	wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
2126 
2127 	if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
2128 		ioc_err(ioc, "%s: timeout\n", __func__);
2129 		_debug_dump_mf(mpi_request,
2130 		    sizeof(Mpi2SmpPassthroughRequest_t)/4);
2131 		if (!(ioc->transport_cmds.status & MPT3_CMD_RESET)) {
2132 			mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2133 			rc = -ETIMEDOUT;
2134 			goto unmap_in;
2135 		}
2136 	}
2137 
2138 	dtransportprintk(ioc, ioc_info(ioc, "%s - complete\n", __func__));
2139 
2140 	if (!(ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID)) {
2141 		dtransportprintk(ioc,
2142 				 ioc_info(ioc, "%s: no reply\n", __func__));
2143 		rc = -ENXIO;
2144 		goto unmap_in;
2145 	}
2146 
2147 	mpi_reply = ioc->transport_cmds.reply;
2148 
2149 	dtransportprintk(ioc,
2150 			 ioc_info(ioc, "%s: reply data transfer size(%d)\n",
2151 				  __func__,
2152 				  le16_to_cpu(mpi_reply->ResponseDataLength)));
2153 
2154 	memcpy(job->reply, mpi_reply, sizeof(*mpi_reply));
2155 	job->reply_len = sizeof(*mpi_reply);
2156 	reslen = le16_to_cpu(mpi_reply->ResponseDataLength);
2157 
2158 	if (addr_in) {
2159 		sg_copy_to_buffer(job->reply_payload.sg_list,
2160 				job->reply_payload.sg_cnt, addr_in,
2161 				job->reply_payload.payload_len);
2162 	}
2163 
2164 	rc = 0;
2165  unmap_in:
2166 	_transport_unmap_smp_buffer(&ioc->pdev->dev, &job->reply_payload,
2167 			dma_addr_in, addr_in);
2168  unmap_out:
2169 	_transport_unmap_smp_buffer(&ioc->pdev->dev, &job->request_payload,
2170 			dma_addr_out, addr_out);
2171  out:
2172 	ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
2173 	mutex_unlock(&ioc->transport_cmds.mutex);
2174 job_done:
2175 	bsg_job_done(job, rc, reslen);
2176 }
2177 
2178 struct sas_function_template mpt3sas_transport_functions = {
2179 	.get_linkerrors		= _transport_get_linkerrors,
2180 	.get_enclosure_identifier = _transport_get_enclosure_identifier,
2181 	.get_bay_identifier	= _transport_get_bay_identifier,
2182 	.phy_reset		= _transport_phy_reset,
2183 	.phy_enable		= _transport_phy_enable,
2184 	.set_phy_speed		= _transport_phy_speed,
2185 	.smp_handler		= _transport_smp_handler,
2186 };
2187 
2188 struct scsi_transport_template *mpt3sas_transport_template;
2189