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 (!port || (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 	if (!rphy) {
828 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
829 			__FILE__, __LINE__, __func__);
830 		goto out_delete_port;
831 	}
832 
833 	rphy->identify = mpt3sas_port->remote_identify;
834 
835 	if ((sas_rphy_add(rphy))) {
836 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
837 			__FILE__, __LINE__, __func__);
838 		sas_rphy_free(rphy);
839 		rphy = NULL;
840 		goto out_delete_port;
841 	}
842 
843 	if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) {
844 		sas_device->pend_sas_rphy_add = 0;
845 		sas_device_put(sas_device);
846 	}
847 
848 	dev_info(&rphy->dev,
849 	    "add: handle(0x%04x), sas_addr(0x%016llx)\n", handle,
850 	    (unsigned long long)mpt3sas_port->remote_identify.sas_address);
851 
852 	mpt3sas_port->rphy = rphy;
853 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
854 	list_add_tail(&mpt3sas_port->port_list, &sas_node->sas_port_list);
855 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
856 
857 	/* fill in report manufacture */
858 	if (mpt3sas_port->remote_identify.device_type ==
859 	    MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
860 	    mpt3sas_port->remote_identify.device_type ==
861 	    MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
862 		_transport_expander_report_manufacture(ioc,
863 		    mpt3sas_port->remote_identify.sas_address,
864 		    rphy_to_expander_device(rphy), hba_port->port_id);
865 	return mpt3sas_port;
866 
867 out_delete_port:
868 	sas_port_delete(port);
869 
870 out_fail:
871 	list_for_each_entry_safe(mpt3sas_phy, next, &mpt3sas_port->phy_list,
872 	    port_siblings)
873 		list_del(&mpt3sas_phy->port_siblings);
874 	kfree(mpt3sas_port);
875 	return NULL;
876 }
877 
878 /**
879  * mpt3sas_transport_port_remove - remove port from the list
880  * @ioc: per adapter object
881  * @sas_address: sas address of attached device
882  * @sas_address_parent: sas address of parent expander or sas host
883  * @port: hba port entry
884  * Context: This function will acquire ioc->sas_node_lock.
885  *
886  * Removing object and freeing associated memory from the
887  * ioc->sas_port_list.
888  */
889 void
890 mpt3sas_transport_port_remove(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
891 	u64 sas_address_parent, struct hba_port *port)
892 {
893 	int i;
894 	unsigned long flags;
895 	struct _sas_port *mpt3sas_port, *next;
896 	struct _sas_node *sas_node;
897 	u8 found = 0;
898 	struct _sas_phy *mpt3sas_phy, *next_phy;
899 	struct hba_port *hba_port_next, *hba_port = NULL;
900 	struct virtual_phy *vphy, *vphy_next = NULL;
901 
902 	if (!port)
903 		return;
904 
905 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
906 	sas_node = _transport_sas_node_find_by_sas_address(ioc,
907 	    sas_address_parent, port);
908 	if (!sas_node) {
909 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
910 		return;
911 	}
912 	list_for_each_entry_safe(mpt3sas_port, next, &sas_node->sas_port_list,
913 	    port_list) {
914 		if (mpt3sas_port->remote_identify.sas_address != sas_address)
915 			continue;
916 		if (mpt3sas_port->hba_port != port)
917 			continue;
918 		found = 1;
919 		list_del(&mpt3sas_port->port_list);
920 		goto out;
921 	}
922  out:
923 	if (!found) {
924 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
925 		return;
926 	}
927 
928 	if (sas_node->handle <= ioc->sas_hba.num_phys &&
929 	    (ioc->multipath_on_hba)) {
930 		if (port->vphys_mask) {
931 			list_for_each_entry_safe(vphy, vphy_next,
932 			    &port->vphys_list, list) {
933 				if (vphy->sas_address != sas_address)
934 					continue;
935 				ioc_info(ioc,
936 				    "remove vphy entry: %p of port:%p,from %d port's vphys list\n",
937 				    vphy, port, port->port_id);
938 				port->vphys_mask &= ~vphy->phy_mask;
939 				list_del(&vphy->list);
940 				kfree(vphy);
941 			}
942 		}
943 
944 		list_for_each_entry_safe(hba_port, hba_port_next,
945 		    &ioc->port_table_list, list) {
946 			if (hba_port != port)
947 				continue;
948 			/*
949 			 * Delete hba_port object if
950 			 *  - hba_port object's sas address matches with current
951 			 *    removed device's sas address and no vphy's
952 			 *    associated with it.
953 			 *  - Current removed device is a vSES device and
954 			 *    none of the other direct attached device have
955 			 *    this vSES device's port number (hence hba_port
956 			 *    object sas_address field will be zero).
957 			 */
958 			if ((hba_port->sas_address == sas_address ||
959 			    !hba_port->sas_address) && !hba_port->vphys_mask) {
960 				ioc_info(ioc,
961 				    "remove hba_port entry: %p port: %d from hba_port list\n",
962 				    hba_port, hba_port->port_id);
963 				list_del(&hba_port->list);
964 				kfree(hba_port);
965 			} else if (hba_port->sas_address == sas_address &&
966 			    hba_port->vphys_mask) {
967 				/*
968 				 * Current removed device is a non vSES device
969 				 * and a vSES device has the same port number
970 				 * as of current device's port number. Hence
971 				 * only clear the sas_address filed, don't
972 				 * delete the hba_port object.
973 				 */
974 				ioc_info(ioc,
975 				    "clearing sas_address from hba_port entry: %p port: %d from hba_port list\n",
976 				    hba_port, hba_port->port_id);
977 				port->sas_address = 0;
978 			}
979 			break;
980 		}
981 	}
982 
983 	for (i = 0; i < sas_node->num_phys; i++) {
984 		if (sas_node->phy[i].remote_identify.sas_address == sas_address)
985 			memset(&sas_node->phy[i].remote_identify, 0 ,
986 			    sizeof(struct sas_identify));
987 	}
988 
989 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
990 
991 	list_for_each_entry_safe(mpt3sas_phy, next_phy,
992 	    &mpt3sas_port->phy_list, port_siblings) {
993 		if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
994 			dev_printk(KERN_INFO, &mpt3sas_port->port->dev,
995 			    "remove: sas_addr(0x%016llx), phy(%d)\n",
996 			    (unsigned long long)
997 			    mpt3sas_port->remote_identify.sas_address,
998 			    mpt3sas_phy->phy_id);
999 		mpt3sas_phy->phy_belongs_to_port = 0;
1000 		if (!ioc->remove_host)
1001 			sas_port_delete_phy(mpt3sas_port->port,
1002 						mpt3sas_phy->phy);
1003 		list_del(&mpt3sas_phy->port_siblings);
1004 	}
1005 	if (!ioc->remove_host)
1006 		sas_port_delete(mpt3sas_port->port);
1007 	ioc_info(ioc, "%s: removed: sas_addr(0x%016llx)\n",
1008 	    __func__, (unsigned long long)sas_address);
1009 	kfree(mpt3sas_port);
1010 }
1011 
1012 /**
1013  * mpt3sas_transport_add_host_phy - report sas_host phy to transport
1014  * @ioc: per adapter object
1015  * @mpt3sas_phy: mpt3sas per phy object
1016  * @phy_pg0: sas phy page 0
1017  * @parent_dev: parent device class object
1018  *
1019  * Return: 0 for success, non-zero for failure.
1020  */
1021 int
1022 mpt3sas_transport_add_host_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
1023 	*mpt3sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
1024 {
1025 	struct sas_phy *phy;
1026 	int phy_index = mpt3sas_phy->phy_id;
1027 
1028 
1029 	INIT_LIST_HEAD(&mpt3sas_phy->port_siblings);
1030 	phy = sas_phy_alloc(parent_dev, phy_index);
1031 	if (!phy) {
1032 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1033 			__FILE__, __LINE__, __func__);
1034 		return -1;
1035 	}
1036 	if ((_transport_set_identify(ioc, mpt3sas_phy->handle,
1037 	    &mpt3sas_phy->identify))) {
1038 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1039 			__FILE__, __LINE__, __func__);
1040 		sas_phy_free(phy);
1041 		return -1;
1042 	}
1043 	phy->identify = mpt3sas_phy->identify;
1044 	mpt3sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
1045 	if (mpt3sas_phy->attached_handle)
1046 		_transport_set_identify(ioc, mpt3sas_phy->attached_handle,
1047 		    &mpt3sas_phy->remote_identify);
1048 	phy->identify.phy_identifier = mpt3sas_phy->phy_id;
1049 	phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1050 	    phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1051 	phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
1052 	    phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
1053 	phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
1054 	    phy_pg0.HwLinkRate >> 4);
1055 	phy->minimum_linkrate = _transport_convert_phy_link_rate(
1056 	    phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1057 	phy->maximum_linkrate = _transport_convert_phy_link_rate(
1058 	    phy_pg0.ProgrammedLinkRate >> 4);
1059 	phy->hostdata = mpt3sas_phy->port;
1060 
1061 	if ((sas_phy_add(phy))) {
1062 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1063 			__FILE__, __LINE__, __func__);
1064 		sas_phy_free(phy);
1065 		return -1;
1066 	}
1067 	if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1068 		dev_printk(KERN_INFO, &phy->dev,
1069 		    "add: handle(0x%04x), sas_addr(0x%016llx)\n"
1070 		    "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1071 		    mpt3sas_phy->handle, (unsigned long long)
1072 		    mpt3sas_phy->identify.sas_address,
1073 		    mpt3sas_phy->attached_handle,
1074 		    (unsigned long long)
1075 		    mpt3sas_phy->remote_identify.sas_address);
1076 	mpt3sas_phy->phy = phy;
1077 	return 0;
1078 }
1079 
1080 
1081 /**
1082  * mpt3sas_transport_add_expander_phy - report expander phy to transport
1083  * @ioc: per adapter object
1084  * @mpt3sas_phy: mpt3sas per phy object
1085  * @expander_pg1: expander page 1
1086  * @parent_dev: parent device class object
1087  *
1088  * Return: 0 for success, non-zero for failure.
1089  */
1090 int
1091 mpt3sas_transport_add_expander_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
1092 	*mpt3sas_phy, Mpi2ExpanderPage1_t expander_pg1,
1093 	struct device *parent_dev)
1094 {
1095 	struct sas_phy *phy;
1096 	int phy_index = mpt3sas_phy->phy_id;
1097 
1098 	INIT_LIST_HEAD(&mpt3sas_phy->port_siblings);
1099 	phy = sas_phy_alloc(parent_dev, phy_index);
1100 	if (!phy) {
1101 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1102 			__FILE__, __LINE__, __func__);
1103 		return -1;
1104 	}
1105 	if ((_transport_set_identify(ioc, mpt3sas_phy->handle,
1106 	    &mpt3sas_phy->identify))) {
1107 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1108 			__FILE__, __LINE__, __func__);
1109 		sas_phy_free(phy);
1110 		return -1;
1111 	}
1112 	phy->identify = mpt3sas_phy->identify;
1113 	mpt3sas_phy->attached_handle =
1114 	    le16_to_cpu(expander_pg1.AttachedDevHandle);
1115 	if (mpt3sas_phy->attached_handle)
1116 		_transport_set_identify(ioc, mpt3sas_phy->attached_handle,
1117 		    &mpt3sas_phy->remote_identify);
1118 	phy->identify.phy_identifier = mpt3sas_phy->phy_id;
1119 	phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1120 	    expander_pg1.NegotiatedLinkRate &
1121 	    MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1122 	phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
1123 	    expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
1124 	phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
1125 	    expander_pg1.HwLinkRate >> 4);
1126 	phy->minimum_linkrate = _transport_convert_phy_link_rate(
1127 	    expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1128 	phy->maximum_linkrate = _transport_convert_phy_link_rate(
1129 	    expander_pg1.ProgrammedLinkRate >> 4);
1130 	phy->hostdata = mpt3sas_phy->port;
1131 
1132 	if ((sas_phy_add(phy))) {
1133 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1134 			__FILE__, __LINE__, __func__);
1135 		sas_phy_free(phy);
1136 		return -1;
1137 	}
1138 	if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1139 		dev_printk(KERN_INFO, &phy->dev,
1140 		    "add: handle(0x%04x), sas_addr(0x%016llx)\n"
1141 		    "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1142 		    mpt3sas_phy->handle, (unsigned long long)
1143 		    mpt3sas_phy->identify.sas_address,
1144 		    mpt3sas_phy->attached_handle,
1145 		    (unsigned long long)
1146 		    mpt3sas_phy->remote_identify.sas_address);
1147 	mpt3sas_phy->phy = phy;
1148 	return 0;
1149 }
1150 
1151 /**
1152  * mpt3sas_transport_update_links - refreshing phy link changes
1153  * @ioc: per adapter object
1154  * @sas_address: sas address of parent expander or sas host
1155  * @handle: attached device handle
1156  * @phy_number: phy number
1157  * @link_rate: new link rate
1158  * @port: hba port entry
1159  *
1160  * Return nothing.
1161  */
1162 void
1163 mpt3sas_transport_update_links(struct MPT3SAS_ADAPTER *ioc,
1164 	u64 sas_address, u16 handle, u8 phy_number, u8 link_rate,
1165 	struct hba_port *port)
1166 {
1167 	unsigned long flags;
1168 	struct _sas_node *sas_node;
1169 	struct _sas_phy *mpt3sas_phy;
1170 	struct hba_port *hba_port = NULL;
1171 
1172 	if (ioc->shost_recovery || ioc->pci_error_recovery)
1173 		return;
1174 
1175 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
1176 	sas_node = _transport_sas_node_find_by_sas_address(ioc,
1177 	    sas_address, port);
1178 	if (!sas_node) {
1179 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1180 		return;
1181 	}
1182 
1183 	mpt3sas_phy = &sas_node->phy[phy_number];
1184 	mpt3sas_phy->attached_handle = handle;
1185 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1186 	if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5)) {
1187 		_transport_set_identify(ioc, handle,
1188 		    &mpt3sas_phy->remote_identify);
1189 		if ((sas_node->handle <= ioc->sas_hba.num_phys) &&
1190 		    (ioc->multipath_on_hba)) {
1191 			list_for_each_entry(hba_port,
1192 			    &ioc->port_table_list, list) {
1193 				if (hba_port->sas_address == sas_address &&
1194 				    hba_port == port)
1195 					hba_port->phy_mask |=
1196 					    (1 << mpt3sas_phy->phy_id);
1197 			}
1198 		}
1199 		mpt3sas_transport_add_phy_to_an_existing_port(ioc, sas_node,
1200 		    mpt3sas_phy, mpt3sas_phy->remote_identify.sas_address,
1201 		    port);
1202 	} else
1203 		memset(&mpt3sas_phy->remote_identify, 0 , sizeof(struct
1204 		    sas_identify));
1205 
1206 	if (mpt3sas_phy->phy)
1207 		mpt3sas_phy->phy->negotiated_linkrate =
1208 		    _transport_convert_phy_link_rate(link_rate);
1209 
1210 	if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1211 		dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
1212 		    "refresh: parent sas_addr(0x%016llx),\n"
1213 		    "\tlink_rate(0x%02x), phy(%d)\n"
1214 		    "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1215 		    (unsigned long long)sas_address,
1216 		    link_rate, phy_number, handle, (unsigned long long)
1217 		    mpt3sas_phy->remote_identify.sas_address);
1218 }
1219 
1220 static inline void *
1221 phy_to_ioc(struct sas_phy *phy)
1222 {
1223 	struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1224 	return shost_priv(shost);
1225 }
1226 
1227 static inline void *
1228 rphy_to_ioc(struct sas_rphy *rphy)
1229 {
1230 	struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1231 	return shost_priv(shost);
1232 }
1233 
1234 /* report phy error log structure */
1235 struct phy_error_log_request {
1236 	u8 smp_frame_type; /* 0x40 */
1237 	u8 function; /* 0x11 */
1238 	u8 allocated_response_length;
1239 	u8 request_length; /* 02 */
1240 	u8 reserved_1[5];
1241 	u8 phy_identifier;
1242 	u8 reserved_2[2];
1243 };
1244 
1245 /* report phy error log reply structure */
1246 struct phy_error_log_reply {
1247 	u8 smp_frame_type; /* 0x41 */
1248 	u8 function; /* 0x11 */
1249 	u8 function_result;
1250 	u8 response_length;
1251 	__be16 expander_change_count;
1252 	u8 reserved_1[3];
1253 	u8 phy_identifier;
1254 	u8 reserved_2[2];
1255 	__be32 invalid_dword;
1256 	__be32 running_disparity_error;
1257 	__be32 loss_of_dword_sync;
1258 	__be32 phy_reset_problem;
1259 };
1260 
1261 /**
1262  * _transport_get_expander_phy_error_log - return expander counters
1263  * @ioc: per adapter object
1264  * @phy: The sas phy object
1265  *
1266  * Return: 0 for success, non-zero for failure.
1267  *
1268  */
1269 static int
1270 _transport_get_expander_phy_error_log(struct MPT3SAS_ADAPTER *ioc,
1271 	struct sas_phy *phy)
1272 {
1273 	Mpi2SmpPassthroughRequest_t *mpi_request;
1274 	Mpi2SmpPassthroughReply_t *mpi_reply;
1275 	struct phy_error_log_request *phy_error_log_request;
1276 	struct phy_error_log_reply *phy_error_log_reply;
1277 	int rc;
1278 	u16 smid;
1279 	void *psge;
1280 	u8 issue_reset = 0;
1281 	void *data_out = NULL;
1282 	dma_addr_t data_out_dma;
1283 	u32 sz;
1284 
1285 	if (ioc->shost_recovery || ioc->pci_error_recovery) {
1286 		ioc_info(ioc, "%s: host reset in progress!\n", __func__);
1287 		return -EFAULT;
1288 	}
1289 
1290 	mutex_lock(&ioc->transport_cmds.mutex);
1291 
1292 	if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1293 		ioc_err(ioc, "%s: transport_cmds in use\n", __func__);
1294 		rc = -EAGAIN;
1295 		goto out;
1296 	}
1297 	ioc->transport_cmds.status = MPT3_CMD_PENDING;
1298 
1299 	rc = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT);
1300 	if (rc)
1301 		goto out;
1302 
1303 	smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
1304 	if (!smid) {
1305 		ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
1306 		rc = -EAGAIN;
1307 		goto out;
1308 	}
1309 
1310 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1311 	ioc->transport_cmds.smid = smid;
1312 
1313 	sz = sizeof(struct phy_error_log_request) +
1314 	    sizeof(struct phy_error_log_reply);
1315 	data_out = dma_alloc_coherent(&ioc->pdev->dev, sz, &data_out_dma,
1316 			GFP_KERNEL);
1317 	if (!data_out) {
1318 		pr_err("failure at %s:%d/%s()!\n", __FILE__,
1319 		    __LINE__, __func__);
1320 		rc = -ENOMEM;
1321 		mpt3sas_base_free_smid(ioc, smid);
1322 		goto out;
1323 	}
1324 
1325 	rc = -EINVAL;
1326 	memset(data_out, 0, sz);
1327 	phy_error_log_request = data_out;
1328 	phy_error_log_request->smp_frame_type = 0x40;
1329 	phy_error_log_request->function = 0x11;
1330 	phy_error_log_request->request_length = 2;
1331 	phy_error_log_request->allocated_response_length = 0;
1332 	phy_error_log_request->phy_identifier = phy->number;
1333 
1334 	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1335 	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1336 	mpi_request->PhysicalPort = _transport_get_port_id_by_sas_phy(phy);
1337 	mpi_request->VF_ID = 0; /* TODO */
1338 	mpi_request->VP_ID = 0;
1339 	mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1340 	mpi_request->RequestDataLength =
1341 	    cpu_to_le16(sizeof(struct phy_error_log_request));
1342 	psge = &mpi_request->SGL;
1343 
1344 	ioc->build_sg(ioc, psge, data_out_dma,
1345 		sizeof(struct phy_error_log_request),
1346 	    data_out_dma + sizeof(struct phy_error_log_request),
1347 	    sizeof(struct phy_error_log_reply));
1348 
1349 	dtransportprintk(ioc,
1350 			 ioc_info(ioc, "phy_error_log - send to sas_addr(0x%016llx), phy(%d)\n",
1351 				  (u64)phy->identify.sas_address,
1352 				  phy->number));
1353 	init_completion(&ioc->transport_cmds.done);
1354 	ioc->put_smid_default(ioc, smid);
1355 	wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
1356 
1357 	if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
1358 		ioc_err(ioc, "%s: timeout\n", __func__);
1359 		_debug_dump_mf(mpi_request,
1360 		    sizeof(Mpi2SmpPassthroughRequest_t)/4);
1361 		if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
1362 			issue_reset = 1;
1363 		goto issue_host_reset;
1364 	}
1365 
1366 	dtransportprintk(ioc, ioc_info(ioc, "phy_error_log - complete\n"));
1367 
1368 	if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
1369 
1370 		mpi_reply = ioc->transport_cmds.reply;
1371 
1372 		dtransportprintk(ioc,
1373 				 ioc_info(ioc, "phy_error_log - reply data transfer size(%d)\n",
1374 					  le16_to_cpu(mpi_reply->ResponseDataLength)));
1375 
1376 		if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1377 		    sizeof(struct phy_error_log_reply))
1378 			goto out;
1379 
1380 		phy_error_log_reply = data_out +
1381 		    sizeof(struct phy_error_log_request);
1382 
1383 		dtransportprintk(ioc,
1384 				 ioc_info(ioc, "phy_error_log - function_result(%d)\n",
1385 					  phy_error_log_reply->function_result));
1386 
1387 		phy->invalid_dword_count =
1388 		    be32_to_cpu(phy_error_log_reply->invalid_dword);
1389 		phy->running_disparity_error_count =
1390 		    be32_to_cpu(phy_error_log_reply->running_disparity_error);
1391 		phy->loss_of_dword_sync_count =
1392 		    be32_to_cpu(phy_error_log_reply->loss_of_dword_sync);
1393 		phy->phy_reset_problem_count =
1394 		    be32_to_cpu(phy_error_log_reply->phy_reset_problem);
1395 		rc = 0;
1396 	} else
1397 		dtransportprintk(ioc,
1398 				 ioc_info(ioc, "phy_error_log - no reply\n"));
1399 
1400  issue_host_reset:
1401 	if (issue_reset)
1402 		mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1403  out:
1404 	ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
1405 	if (data_out)
1406 		dma_free_coherent(&ioc->pdev->dev, sz, data_out, data_out_dma);
1407 
1408 	mutex_unlock(&ioc->transport_cmds.mutex);
1409 	return rc;
1410 }
1411 
1412 /**
1413  * _transport_get_linkerrors - return phy counters for both hba and expanders
1414  * @phy: The sas phy object
1415  *
1416  * Return: 0 for success, non-zero for failure.
1417  *
1418  */
1419 static int
1420 _transport_get_linkerrors(struct sas_phy *phy)
1421 {
1422 	struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1423 	unsigned long flags;
1424 	Mpi2ConfigReply_t mpi_reply;
1425 	Mpi2SasPhyPage1_t phy_pg1;
1426 	struct hba_port *port = phy->hostdata;
1427 	int port_id = port->port_id;
1428 
1429 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
1430 	if (_transport_sas_node_find_by_sas_address(ioc,
1431 	    phy->identify.sas_address,
1432 	    mpt3sas_get_port_by_id(ioc, port_id, 0)) == NULL) {
1433 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1434 		return -EINVAL;
1435 	}
1436 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1437 
1438 	if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1439 		return _transport_get_expander_phy_error_log(ioc, phy);
1440 
1441 	/* get hba phy error logs */
1442 	if ((mpt3sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
1443 		    phy->number))) {
1444 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1445 			__FILE__, __LINE__, __func__);
1446 		return -ENXIO;
1447 	}
1448 
1449 	if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1450 		ioc_info(ioc, "phy(%d), ioc_status (0x%04x), loginfo(0x%08x)\n",
1451 			 phy->number,
1452 			 le16_to_cpu(mpi_reply.IOCStatus),
1453 			 le32_to_cpu(mpi_reply.IOCLogInfo));
1454 
1455 	phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
1456 	phy->running_disparity_error_count =
1457 	    le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
1458 	phy->loss_of_dword_sync_count =
1459 	    le32_to_cpu(phy_pg1.LossDwordSynchCount);
1460 	phy->phy_reset_problem_count =
1461 	    le32_to_cpu(phy_pg1.PhyResetProblemCount);
1462 	return 0;
1463 }
1464 
1465 /**
1466  * _transport_get_enclosure_identifier -
1467  * @rphy: The sas phy object
1468  * @identifier: ?
1469  *
1470  * Obtain the enclosure logical id for an expander.
1471  * Return: 0 for success, non-zero for failure.
1472  */
1473 static int
1474 _transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
1475 {
1476 	struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1477 	struct _sas_device *sas_device;
1478 	unsigned long flags;
1479 	int rc;
1480 
1481 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
1482 	sas_device = __mpt3sas_get_sdev_by_rphy(ioc, rphy);
1483 	if (sas_device) {
1484 		*identifier = sas_device->enclosure_logical_id;
1485 		rc = 0;
1486 		sas_device_put(sas_device);
1487 	} else {
1488 		*identifier = 0;
1489 		rc = -ENXIO;
1490 	}
1491 
1492 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1493 	return rc;
1494 }
1495 
1496 /**
1497  * _transport_get_bay_identifier -
1498  * @rphy: The sas phy object
1499  *
1500  * Return: the slot id for a device that resides inside an enclosure.
1501  */
1502 static int
1503 _transport_get_bay_identifier(struct sas_rphy *rphy)
1504 {
1505 	struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1506 	struct _sas_device *sas_device;
1507 	unsigned long flags;
1508 	int rc;
1509 
1510 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
1511 	sas_device = __mpt3sas_get_sdev_by_rphy(ioc, rphy);
1512 	if (sas_device) {
1513 		rc = sas_device->slot;
1514 		sas_device_put(sas_device);
1515 	} else {
1516 		rc = -ENXIO;
1517 	}
1518 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1519 	return rc;
1520 }
1521 
1522 /* phy control request structure */
1523 struct phy_control_request {
1524 	u8 smp_frame_type; /* 0x40 */
1525 	u8 function; /* 0x91 */
1526 	u8 allocated_response_length;
1527 	u8 request_length; /* 0x09 */
1528 	u16 expander_change_count;
1529 	u8 reserved_1[3];
1530 	u8 phy_identifier;
1531 	u8 phy_operation;
1532 	u8 reserved_2[13];
1533 	u64 attached_device_name;
1534 	u8 programmed_min_physical_link_rate;
1535 	u8 programmed_max_physical_link_rate;
1536 	u8 reserved_3[6];
1537 };
1538 
1539 /* phy control reply structure */
1540 struct phy_control_reply {
1541 	u8 smp_frame_type; /* 0x41 */
1542 	u8 function; /* 0x11 */
1543 	u8 function_result;
1544 	u8 response_length;
1545 };
1546 
1547 #define SMP_PHY_CONTROL_LINK_RESET	(0x01)
1548 #define SMP_PHY_CONTROL_HARD_RESET	(0x02)
1549 #define SMP_PHY_CONTROL_DISABLE		(0x03)
1550 
1551 /**
1552  * _transport_expander_phy_control - expander phy control
1553  * @ioc: per adapter object
1554  * @phy: The sas phy object
1555  * @phy_operation: ?
1556  *
1557  * Return: 0 for success, non-zero for failure.
1558  *
1559  */
1560 static int
1561 _transport_expander_phy_control(struct MPT3SAS_ADAPTER *ioc,
1562 	struct sas_phy *phy, u8 phy_operation)
1563 {
1564 	Mpi2SmpPassthroughRequest_t *mpi_request;
1565 	Mpi2SmpPassthroughReply_t *mpi_reply;
1566 	struct phy_control_request *phy_control_request;
1567 	struct phy_control_reply *phy_control_reply;
1568 	int rc;
1569 	u16 smid;
1570 	void *psge;
1571 	u8 issue_reset = 0;
1572 	void *data_out = NULL;
1573 	dma_addr_t data_out_dma;
1574 	u32 sz;
1575 
1576 	if (ioc->shost_recovery || ioc->pci_error_recovery) {
1577 		ioc_info(ioc, "%s: host reset in progress!\n", __func__);
1578 		return -EFAULT;
1579 	}
1580 
1581 	mutex_lock(&ioc->transport_cmds.mutex);
1582 
1583 	if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1584 		ioc_err(ioc, "%s: transport_cmds in use\n", __func__);
1585 		rc = -EAGAIN;
1586 		goto out;
1587 	}
1588 	ioc->transport_cmds.status = MPT3_CMD_PENDING;
1589 
1590 	rc = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT);
1591 	if (rc)
1592 		goto out;
1593 
1594 	smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
1595 	if (!smid) {
1596 		ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
1597 		rc = -EAGAIN;
1598 		goto out;
1599 	}
1600 
1601 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1602 	ioc->transport_cmds.smid = smid;
1603 
1604 	sz = sizeof(struct phy_control_request) +
1605 	    sizeof(struct phy_control_reply);
1606 	data_out = dma_alloc_coherent(&ioc->pdev->dev, sz, &data_out_dma,
1607 			GFP_KERNEL);
1608 	if (!data_out) {
1609 		pr_err("failure at %s:%d/%s()!\n", __FILE__,
1610 		    __LINE__, __func__);
1611 		rc = -ENOMEM;
1612 		mpt3sas_base_free_smid(ioc, smid);
1613 		goto out;
1614 	}
1615 
1616 	rc = -EINVAL;
1617 	memset(data_out, 0, sz);
1618 	phy_control_request = data_out;
1619 	phy_control_request->smp_frame_type = 0x40;
1620 	phy_control_request->function = 0x91;
1621 	phy_control_request->request_length = 9;
1622 	phy_control_request->allocated_response_length = 0;
1623 	phy_control_request->phy_identifier = phy->number;
1624 	phy_control_request->phy_operation = phy_operation;
1625 	phy_control_request->programmed_min_physical_link_rate =
1626 	    phy->minimum_linkrate << 4;
1627 	phy_control_request->programmed_max_physical_link_rate =
1628 	    phy->maximum_linkrate << 4;
1629 
1630 	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1631 	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1632 	mpi_request->PhysicalPort = _transport_get_port_id_by_sas_phy(phy);
1633 	mpi_request->VF_ID = 0; /* TODO */
1634 	mpi_request->VP_ID = 0;
1635 	mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1636 	mpi_request->RequestDataLength =
1637 	    cpu_to_le16(sizeof(struct phy_error_log_request));
1638 	psge = &mpi_request->SGL;
1639 
1640 	ioc->build_sg(ioc, psge, data_out_dma,
1641 			    sizeof(struct phy_control_request),
1642 	    data_out_dma + sizeof(struct phy_control_request),
1643 	    sizeof(struct phy_control_reply));
1644 
1645 	dtransportprintk(ioc,
1646 			 ioc_info(ioc, "phy_control - send to sas_addr(0x%016llx), phy(%d), opcode(%d)\n",
1647 				  (u64)phy->identify.sas_address,
1648 				  phy->number, phy_operation));
1649 	init_completion(&ioc->transport_cmds.done);
1650 	ioc->put_smid_default(ioc, smid);
1651 	wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
1652 
1653 	if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
1654 		ioc_err(ioc, "%s: timeout\n", __func__);
1655 		_debug_dump_mf(mpi_request,
1656 		    sizeof(Mpi2SmpPassthroughRequest_t)/4);
1657 		if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
1658 			issue_reset = 1;
1659 		goto issue_host_reset;
1660 	}
1661 
1662 	dtransportprintk(ioc, ioc_info(ioc, "phy_control - complete\n"));
1663 
1664 	if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
1665 
1666 		mpi_reply = ioc->transport_cmds.reply;
1667 
1668 		dtransportprintk(ioc,
1669 				 ioc_info(ioc, "phy_control - reply data transfer size(%d)\n",
1670 					  le16_to_cpu(mpi_reply->ResponseDataLength)));
1671 
1672 		if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1673 		    sizeof(struct phy_control_reply))
1674 			goto out;
1675 
1676 		phy_control_reply = data_out +
1677 		    sizeof(struct phy_control_request);
1678 
1679 		dtransportprintk(ioc,
1680 				 ioc_info(ioc, "phy_control - function_result(%d)\n",
1681 					  phy_control_reply->function_result));
1682 
1683 		rc = 0;
1684 	} else
1685 		dtransportprintk(ioc,
1686 				 ioc_info(ioc, "phy_control - no reply\n"));
1687 
1688  issue_host_reset:
1689 	if (issue_reset)
1690 		mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1691  out:
1692 	ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
1693 	if (data_out)
1694 		dma_free_coherent(&ioc->pdev->dev, sz, data_out,
1695 				data_out_dma);
1696 
1697 	mutex_unlock(&ioc->transport_cmds.mutex);
1698 	return rc;
1699 }
1700 
1701 /**
1702  * _transport_phy_reset -
1703  * @phy: The sas phy object
1704  * @hard_reset:
1705  *
1706  * Return: 0 for success, non-zero for failure.
1707  */
1708 static int
1709 _transport_phy_reset(struct sas_phy *phy, int hard_reset)
1710 {
1711 	struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1712 	Mpi2SasIoUnitControlReply_t mpi_reply;
1713 	Mpi2SasIoUnitControlRequest_t mpi_request;
1714 	struct hba_port *port = phy->hostdata;
1715 	int port_id = port->port_id;
1716 	unsigned long flags;
1717 
1718 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
1719 	if (_transport_sas_node_find_by_sas_address(ioc,
1720 	    phy->identify.sas_address,
1721 	    mpt3sas_get_port_by_id(ioc, port_id, 0)) == NULL) {
1722 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1723 		return -EINVAL;
1724 	}
1725 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1726 
1727 	/* handle expander phys */
1728 	if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1729 		return _transport_expander_phy_control(ioc, phy,
1730 		    (hard_reset == 1) ? SMP_PHY_CONTROL_HARD_RESET :
1731 		    SMP_PHY_CONTROL_LINK_RESET);
1732 
1733 	/* handle hba phys */
1734 	memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
1735 	mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
1736 	mpi_request.Operation = hard_reset ?
1737 	    MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
1738 	mpi_request.PhyNum = phy->number;
1739 
1740 	if ((mpt3sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
1741 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1742 			__FILE__, __LINE__, __func__);
1743 		return -ENXIO;
1744 	}
1745 
1746 	if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1747 		ioc_info(ioc, "phy(%d), ioc_status(0x%04x), loginfo(0x%08x)\n",
1748 			 phy->number, le16_to_cpu(mpi_reply.IOCStatus),
1749 			 le32_to_cpu(mpi_reply.IOCLogInfo));
1750 
1751 	return 0;
1752 }
1753 
1754 /**
1755  * _transport_phy_enable - enable/disable phys
1756  * @phy: The sas phy object
1757  * @enable: enable phy when true
1758  *
1759  * Only support sas_host direct attached phys.
1760  * Return: 0 for success, non-zero for failure.
1761  */
1762 static int
1763 _transport_phy_enable(struct sas_phy *phy, int enable)
1764 {
1765 	struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1766 	Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1767 	Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
1768 	Mpi2ConfigReply_t mpi_reply;
1769 	u16 ioc_status;
1770 	u16 sz;
1771 	int rc = 0;
1772 	unsigned long flags;
1773 	int i, discovery_active;
1774 	struct hba_port *port = phy->hostdata;
1775 	int port_id = port->port_id;
1776 
1777 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
1778 	if (_transport_sas_node_find_by_sas_address(ioc,
1779 	    phy->identify.sas_address,
1780 	    mpt3sas_get_port_by_id(ioc, port_id, 0)) == NULL) {
1781 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1782 		return -EINVAL;
1783 	}
1784 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1785 
1786 	/* handle expander phys */
1787 	if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1788 		return _transport_expander_phy_control(ioc, phy,
1789 		    (enable == 1) ? SMP_PHY_CONTROL_LINK_RESET :
1790 		    SMP_PHY_CONTROL_DISABLE);
1791 
1792 	/* handle hba phys */
1793 
1794 	/* read sas_iounit page 0 */
1795 	sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys *
1796 	    sizeof(Mpi2SasIOUnit0PhyData_t));
1797 	sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
1798 	if (!sas_iounit_pg0) {
1799 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1800 			__FILE__, __LINE__, __func__);
1801 		rc = -ENOMEM;
1802 		goto out;
1803 	}
1804 	if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
1805 	    sas_iounit_pg0, sz))) {
1806 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1807 			__FILE__, __LINE__, __func__);
1808 		rc = -ENXIO;
1809 		goto out;
1810 	}
1811 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1812 	    MPI2_IOCSTATUS_MASK;
1813 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1814 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1815 			__FILE__, __LINE__, __func__);
1816 		rc = -EIO;
1817 		goto out;
1818 	}
1819 
1820 	/* unable to enable/disable phys when when discovery is active */
1821 	for (i = 0, discovery_active = 0; i < ioc->sas_hba.num_phys ; i++) {
1822 		if (sas_iounit_pg0->PhyData[i].PortFlags &
1823 		    MPI2_SASIOUNIT0_PORTFLAGS_DISCOVERY_IN_PROGRESS) {
1824 			ioc_err(ioc, "discovery is active on port = %d, phy = %d: unable to enable/disable phys, try again later!\n",
1825 				sas_iounit_pg0->PhyData[i].Port, i);
1826 			discovery_active = 1;
1827 		}
1828 	}
1829 
1830 	if (discovery_active) {
1831 		rc = -EAGAIN;
1832 		goto out;
1833 	}
1834 
1835 	/* read sas_iounit page 1 */
1836 	sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1837 	    sizeof(Mpi2SasIOUnit1PhyData_t));
1838 	sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1839 	if (!sas_iounit_pg1) {
1840 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1841 			__FILE__, __LINE__, __func__);
1842 		rc = -ENOMEM;
1843 		goto out;
1844 	}
1845 	if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1846 	    sas_iounit_pg1, sz))) {
1847 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1848 			__FILE__, __LINE__, __func__);
1849 		rc = -ENXIO;
1850 		goto out;
1851 	}
1852 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1853 	    MPI2_IOCSTATUS_MASK;
1854 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1855 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1856 			__FILE__, __LINE__, __func__);
1857 		rc = -EIO;
1858 		goto out;
1859 	}
1860 
1861 	/* copy Port/PortFlags/PhyFlags from page 0 */
1862 	for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
1863 		sas_iounit_pg1->PhyData[i].Port =
1864 		    sas_iounit_pg0->PhyData[i].Port;
1865 		sas_iounit_pg1->PhyData[i].PortFlags =
1866 		    (sas_iounit_pg0->PhyData[i].PortFlags &
1867 		    MPI2_SASIOUNIT0_PORTFLAGS_AUTO_PORT_CONFIG);
1868 		sas_iounit_pg1->PhyData[i].PhyFlags =
1869 		    (sas_iounit_pg0->PhyData[i].PhyFlags &
1870 		    (MPI2_SASIOUNIT0_PHYFLAGS_ZONING_ENABLED +
1871 		    MPI2_SASIOUNIT0_PHYFLAGS_PHY_DISABLED));
1872 	}
1873 
1874 	if (enable)
1875 		sas_iounit_pg1->PhyData[phy->number].PhyFlags
1876 		    &= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1877 	else
1878 		sas_iounit_pg1->PhyData[phy->number].PhyFlags
1879 		    |= MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1880 
1881 	mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, sz);
1882 
1883 	/* link reset */
1884 	if (enable)
1885 		_transport_phy_reset(phy, 0);
1886 
1887  out:
1888 	kfree(sas_iounit_pg1);
1889 	kfree(sas_iounit_pg0);
1890 	return rc;
1891 }
1892 
1893 /**
1894  * _transport_phy_speed - set phy min/max link rates
1895  * @phy: The sas phy object
1896  * @rates: rates defined in sas_phy_linkrates
1897  *
1898  * Only support sas_host direct attached phys.
1899  *
1900  * Return: 0 for success, non-zero for failure.
1901  */
1902 static int
1903 _transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
1904 {
1905 	struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1906 	Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1907 	Mpi2SasPhyPage0_t phy_pg0;
1908 	Mpi2ConfigReply_t mpi_reply;
1909 	u16 ioc_status;
1910 	u16 sz;
1911 	int i;
1912 	int rc = 0;
1913 	unsigned long flags;
1914 	struct hba_port *port = phy->hostdata;
1915 	int port_id = port->port_id;
1916 
1917 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
1918 	if (_transport_sas_node_find_by_sas_address(ioc,
1919 	    phy->identify.sas_address,
1920 	    mpt3sas_get_port_by_id(ioc, port_id, 0)) == NULL) {
1921 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1922 		return -EINVAL;
1923 	}
1924 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1925 
1926 	if (!rates->minimum_linkrate)
1927 		rates->minimum_linkrate = phy->minimum_linkrate;
1928 	else if (rates->minimum_linkrate < phy->minimum_linkrate_hw)
1929 		rates->minimum_linkrate = phy->minimum_linkrate_hw;
1930 
1931 	if (!rates->maximum_linkrate)
1932 		rates->maximum_linkrate = phy->maximum_linkrate;
1933 	else if (rates->maximum_linkrate > phy->maximum_linkrate_hw)
1934 		rates->maximum_linkrate = phy->maximum_linkrate_hw;
1935 
1936 	/* handle expander phys */
1937 	if (phy->identify.sas_address != ioc->sas_hba.sas_address) {
1938 		phy->minimum_linkrate = rates->minimum_linkrate;
1939 		phy->maximum_linkrate = rates->maximum_linkrate;
1940 		return _transport_expander_phy_control(ioc, phy,
1941 		    SMP_PHY_CONTROL_LINK_RESET);
1942 	}
1943 
1944 	/* handle hba phys */
1945 
1946 	/* sas_iounit page 1 */
1947 	sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1948 	    sizeof(Mpi2SasIOUnit1PhyData_t));
1949 	sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1950 	if (!sas_iounit_pg1) {
1951 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1952 			__FILE__, __LINE__, __func__);
1953 		rc = -ENOMEM;
1954 		goto out;
1955 	}
1956 	if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1957 	    sas_iounit_pg1, sz))) {
1958 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1959 			__FILE__, __LINE__, __func__);
1960 		rc = -ENXIO;
1961 		goto out;
1962 	}
1963 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1964 	    MPI2_IOCSTATUS_MASK;
1965 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1966 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1967 			__FILE__, __LINE__, __func__);
1968 		rc = -EIO;
1969 		goto out;
1970 	}
1971 
1972 	for (i = 0; i < ioc->sas_hba.num_phys; i++) {
1973 		if (phy->number != i) {
1974 			sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1975 			    (ioc->sas_hba.phy[i].phy->minimum_linkrate +
1976 			    (ioc->sas_hba.phy[i].phy->maximum_linkrate << 4));
1977 		} else {
1978 			sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1979 			    (rates->minimum_linkrate +
1980 			    (rates->maximum_linkrate << 4));
1981 		}
1982 	}
1983 
1984 	if (mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
1985 	    sz)) {
1986 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1987 			__FILE__, __LINE__, __func__);
1988 		rc = -ENXIO;
1989 		goto out;
1990 	}
1991 
1992 	/* link reset */
1993 	_transport_phy_reset(phy, 0);
1994 
1995 	/* read phy page 0, then update the rates in the sas transport phy */
1996 	if (!mpt3sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
1997 	    phy->number)) {
1998 		phy->minimum_linkrate = _transport_convert_phy_link_rate(
1999 		    phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
2000 		phy->maximum_linkrate = _transport_convert_phy_link_rate(
2001 		    phy_pg0.ProgrammedLinkRate >> 4);
2002 		phy->negotiated_linkrate = _transport_convert_phy_link_rate(
2003 		    phy_pg0.NegotiatedLinkRate &
2004 		    MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
2005 	}
2006 
2007  out:
2008 	kfree(sas_iounit_pg1);
2009 	return rc;
2010 }
2011 
2012 static int
2013 _transport_map_smp_buffer(struct device *dev, struct bsg_buffer *buf,
2014 		dma_addr_t *dma_addr, size_t *dma_len, void **p)
2015 {
2016 	/* Check if the request is split across multiple segments */
2017 	if (buf->sg_cnt > 1) {
2018 		*p = dma_alloc_coherent(dev, buf->payload_len, dma_addr,
2019 				GFP_KERNEL);
2020 		if (!*p)
2021 			return -ENOMEM;
2022 		*dma_len = buf->payload_len;
2023 	} else {
2024 		if (!dma_map_sg(dev, buf->sg_list, 1, DMA_BIDIRECTIONAL))
2025 			return -ENOMEM;
2026 		*dma_addr = sg_dma_address(buf->sg_list);
2027 		*dma_len = sg_dma_len(buf->sg_list);
2028 		*p = NULL;
2029 	}
2030 
2031 	return 0;
2032 }
2033 
2034 static void
2035 _transport_unmap_smp_buffer(struct device *dev, struct bsg_buffer *buf,
2036 		dma_addr_t dma_addr, void *p)
2037 {
2038 	if (p)
2039 		dma_free_coherent(dev, buf->payload_len, p, dma_addr);
2040 	else
2041 		dma_unmap_sg(dev, buf->sg_list, 1, DMA_BIDIRECTIONAL);
2042 }
2043 
2044 /**
2045  * _transport_smp_handler - transport portal for smp passthru
2046  * @job: ?
2047  * @shost: shost object
2048  * @rphy: sas transport rphy object
2049  *
2050  * This used primarily for smp_utils.
2051  * Example:
2052  *           smp_rep_general /sys/class/bsg/expander-5:0
2053  */
2054 static void
2055 _transport_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
2056 		struct sas_rphy *rphy)
2057 {
2058 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2059 	Mpi2SmpPassthroughRequest_t *mpi_request;
2060 	Mpi2SmpPassthroughReply_t *mpi_reply;
2061 	int rc;
2062 	u16 smid;
2063 	void *psge;
2064 	dma_addr_t dma_addr_in;
2065 	dma_addr_t dma_addr_out;
2066 	void *addr_in = NULL;
2067 	void *addr_out = NULL;
2068 	size_t dma_len_in;
2069 	size_t dma_len_out;
2070 	unsigned int reslen = 0;
2071 
2072 	if (ioc->shost_recovery || ioc->pci_error_recovery) {
2073 		ioc_info(ioc, "%s: host reset in progress!\n", __func__);
2074 		rc = -EFAULT;
2075 		goto job_done;
2076 	}
2077 
2078 	rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
2079 	if (rc)
2080 		goto job_done;
2081 
2082 	if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
2083 		ioc_err(ioc, "%s: transport_cmds in use\n",
2084 			__func__);
2085 		rc = -EAGAIN;
2086 		goto out;
2087 	}
2088 	ioc->transport_cmds.status = MPT3_CMD_PENDING;
2089 
2090 	rc = _transport_map_smp_buffer(&ioc->pdev->dev, &job->request_payload,
2091 			&dma_addr_out, &dma_len_out, &addr_out);
2092 	if (rc)
2093 		goto out;
2094 	if (addr_out) {
2095 		sg_copy_to_buffer(job->request_payload.sg_list,
2096 				job->request_payload.sg_cnt, addr_out,
2097 				job->request_payload.payload_len);
2098 	}
2099 
2100 	rc = _transport_map_smp_buffer(&ioc->pdev->dev, &job->reply_payload,
2101 			&dma_addr_in, &dma_len_in, &addr_in);
2102 	if (rc)
2103 		goto unmap_out;
2104 
2105 	rc = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT);
2106 	if (rc)
2107 		goto unmap_in;
2108 
2109 	smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
2110 	if (!smid) {
2111 		ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
2112 		rc = -EAGAIN;
2113 		goto unmap_in;
2114 	}
2115 
2116 	rc = 0;
2117 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
2118 	ioc->transport_cmds.smid = smid;
2119 
2120 	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
2121 	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
2122 	mpi_request->PhysicalPort = _transport_get_port_id_by_rphy(ioc, rphy);
2123 	mpi_request->SASAddress = (rphy) ?
2124 	    cpu_to_le64(rphy->identify.sas_address) :
2125 	    cpu_to_le64(ioc->sas_hba.sas_address);
2126 	mpi_request->RequestDataLength = cpu_to_le16(dma_len_out - 4);
2127 	psge = &mpi_request->SGL;
2128 
2129 	ioc->build_sg(ioc, psge, dma_addr_out, dma_len_out - 4, dma_addr_in,
2130 			dma_len_in - 4);
2131 
2132 	dtransportprintk(ioc,
2133 			 ioc_info(ioc, "%s: sending smp request\n", __func__));
2134 
2135 	init_completion(&ioc->transport_cmds.done);
2136 	ioc->put_smid_default(ioc, smid);
2137 	wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
2138 
2139 	if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
2140 		ioc_err(ioc, "%s: timeout\n", __func__);
2141 		_debug_dump_mf(mpi_request,
2142 		    sizeof(Mpi2SmpPassthroughRequest_t)/4);
2143 		if (!(ioc->transport_cmds.status & MPT3_CMD_RESET)) {
2144 			mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2145 			rc = -ETIMEDOUT;
2146 			goto unmap_in;
2147 		}
2148 	}
2149 
2150 	dtransportprintk(ioc, ioc_info(ioc, "%s - complete\n", __func__));
2151 
2152 	if (!(ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID)) {
2153 		dtransportprintk(ioc,
2154 				 ioc_info(ioc, "%s: no reply\n", __func__));
2155 		rc = -ENXIO;
2156 		goto unmap_in;
2157 	}
2158 
2159 	mpi_reply = ioc->transport_cmds.reply;
2160 
2161 	dtransportprintk(ioc,
2162 			 ioc_info(ioc, "%s: reply data transfer size(%d)\n",
2163 				  __func__,
2164 				  le16_to_cpu(mpi_reply->ResponseDataLength)));
2165 
2166 	memcpy(job->reply, mpi_reply, sizeof(*mpi_reply));
2167 	job->reply_len = sizeof(*mpi_reply);
2168 	reslen = le16_to_cpu(mpi_reply->ResponseDataLength);
2169 
2170 	if (addr_in) {
2171 		sg_copy_to_buffer(job->reply_payload.sg_list,
2172 				job->reply_payload.sg_cnt, addr_in,
2173 				job->reply_payload.payload_len);
2174 	}
2175 
2176 	rc = 0;
2177  unmap_in:
2178 	_transport_unmap_smp_buffer(&ioc->pdev->dev, &job->reply_payload,
2179 			dma_addr_in, addr_in);
2180  unmap_out:
2181 	_transport_unmap_smp_buffer(&ioc->pdev->dev, &job->request_payload,
2182 			dma_addr_out, addr_out);
2183  out:
2184 	ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
2185 	mutex_unlock(&ioc->transport_cmds.mutex);
2186 job_done:
2187 	bsg_job_done(job, rc, reslen);
2188 }
2189 
2190 struct sas_function_template mpt3sas_transport_functions = {
2191 	.get_linkerrors		= _transport_get_linkerrors,
2192 	.get_enclosure_identifier = _transport_get_enclosure_identifier,
2193 	.get_bay_identifier	= _transport_get_bay_identifier,
2194 	.phy_reset		= _transport_phy_reset,
2195 	.phy_enable		= _transport_phy_enable,
2196 	.set_phy_speed		= _transport_phy_speed,
2197 	.smp_handler		= _transport_smp_handler,
2198 };
2199 
2200 struct scsi_transport_template *mpt3sas_transport_template;
2201