1 /*
2  * SAS Transport Layer for MPT (Message Passing Technology) based controllers
3  *
4  * This code is based on drivers/scsi/mpt3sas/mpt3sas_transport.c
5  * Copyright (C) 2012-2014  LSI Corporation
6  * Copyright (C) 2013-2014 Avago Technologies
7  *  (mailto: MPT-FusionLinux.pdl@avagotech.com)
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License
11  * as published by the Free Software Foundation; either version 2
12  * of the License, or (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * NO WARRANTY
20  * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
21  * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
22  * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
23  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
24  * solely responsible for determining the appropriateness of using and
25  * distributing the Program and assumes all risks associated with its
26  * exercise of rights under this Agreement, including but not limited to
27  * the risks and costs of program errors, damage to or loss of data,
28  * programs or equipment, and unavailability or interruption of operations.
29 
30  * DISCLAIMER OF LIABILITY
31  * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
32  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33  * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
34  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
35  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
36  * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
37  * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
38 
39  * You should have received a copy of the GNU General Public License
40  * along with this program; if not, write to the Free Software
41  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
42  * USA.
43  */
44 
45 #include <linux/module.h>
46 #include <linux/kernel.h>
47 #include <linux/init.h>
48 #include <linux/errno.h>
49 #include <linux/sched.h>
50 #include <linux/workqueue.h>
51 #include <linux/delay.h>
52 #include <linux/pci.h>
53 
54 #include <scsi/scsi.h>
55 #include <scsi/scsi_cmnd.h>
56 #include <scsi/scsi_device.h>
57 #include <scsi/scsi_host.h>
58 #include <scsi/scsi_transport_sas.h>
59 #include <scsi/scsi_dbg.h>
60 
61 #include "mpt3sas_base.h"
62 
63 /**
64  * _transport_get_port_id_by_sas_phy - get zone's port id that Phy belong to
65  * @phy: sas_phy object
66  *
67  * Return Port number
68  */
69 static inline u8
_transport_get_port_id_by_sas_phy(struct sas_phy * phy)70 _transport_get_port_id_by_sas_phy(struct sas_phy *phy)
71 {
72 	u8 port_id = 0xFF;
73 	struct hba_port *port = phy->hostdata;
74 
75 	if (port)
76 		port_id = port->port_id;
77 
78 	return port_id;
79 }
80 
81 /**
82  * _transport_sas_node_find_by_sas_address - sas node search
83  * @ioc: per adapter object
84  * @sas_address: sas address of expander or sas host
85  * @port: hba port entry
86  * Context: Calling function should acquire ioc->sas_node_lock.
87  *
88  * Search for either hba phys or expander device based on handle, then returns
89  * the sas_node object.
90  */
91 static struct _sas_node *
_transport_sas_node_find_by_sas_address(struct MPT3SAS_ADAPTER * ioc,u64 sas_address,struct hba_port * port)92 _transport_sas_node_find_by_sas_address(struct MPT3SAS_ADAPTER *ioc,
93 	u64 sas_address, struct hba_port *port)
94 {
95 	if (ioc->sas_hba.sas_address == sas_address)
96 		return &ioc->sas_hba;
97 	else
98 		return mpt3sas_scsih_expander_find_by_sas_address(ioc,
99 		    sas_address, port);
100 }
101 
102 /**
103  * _transport_get_port_id_by_rphy - Get Port number from rphy object
104  * @ioc: per adapter object
105  * @rphy: sas_rphy object
106  *
107  * Returns Port number.
108  */
109 static u8
_transport_get_port_id_by_rphy(struct MPT3SAS_ADAPTER * ioc,struct sas_rphy * rphy)110 _transport_get_port_id_by_rphy(struct MPT3SAS_ADAPTER *ioc,
111 	struct sas_rphy *rphy)
112 {
113 	struct _sas_node *sas_expander;
114 	struct _sas_device *sas_device;
115 	unsigned long flags;
116 	u8 port_id = 0xFF;
117 
118 	if (!rphy)
119 		return port_id;
120 
121 	if (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE ||
122 	    rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE) {
123 		spin_lock_irqsave(&ioc->sas_node_lock, flags);
124 		list_for_each_entry(sas_expander,
125 		    &ioc->sas_expander_list, list) {
126 			if (sas_expander->rphy == rphy) {
127 				port_id = sas_expander->port->port_id;
128 				break;
129 			}
130 		}
131 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
132 	} else if (rphy->identify.device_type == SAS_END_DEVICE) {
133 		spin_lock_irqsave(&ioc->sas_device_lock, flags);
134 		sas_device = __mpt3sas_get_sdev_by_rphy(ioc, rphy);
135 		if (sas_device) {
136 			port_id = sas_device->port->port_id;
137 			sas_device_put(sas_device);
138 		}
139 		spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
140 	}
141 
142 	return port_id;
143 }
144 
145 /**
146  * _transport_convert_phy_link_rate -
147  * @link_rate: link rate returned from mpt firmware
148  *
149  * Convert link_rate from mpi fusion into sas_transport form.
150  */
151 static enum sas_linkrate
_transport_convert_phy_link_rate(u8 link_rate)152 _transport_convert_phy_link_rate(u8 link_rate)
153 {
154 	enum sas_linkrate rc;
155 
156 	switch (link_rate) {
157 	case MPI2_SAS_NEG_LINK_RATE_1_5:
158 		rc = SAS_LINK_RATE_1_5_GBPS;
159 		break;
160 	case MPI2_SAS_NEG_LINK_RATE_3_0:
161 		rc = SAS_LINK_RATE_3_0_GBPS;
162 		break;
163 	case MPI2_SAS_NEG_LINK_RATE_6_0:
164 		rc = SAS_LINK_RATE_6_0_GBPS;
165 		break;
166 	case MPI25_SAS_NEG_LINK_RATE_12_0:
167 		rc = SAS_LINK_RATE_12_0_GBPS;
168 		break;
169 	case MPI2_SAS_NEG_LINK_RATE_PHY_DISABLED:
170 		rc = SAS_PHY_DISABLED;
171 		break;
172 	case MPI2_SAS_NEG_LINK_RATE_NEGOTIATION_FAILED:
173 		rc = SAS_LINK_RATE_FAILED;
174 		break;
175 	case MPI2_SAS_NEG_LINK_RATE_PORT_SELECTOR:
176 		rc = SAS_SATA_PORT_SELECTOR;
177 		break;
178 	case MPI2_SAS_NEG_LINK_RATE_SMP_RESET_IN_PROGRESS:
179 		rc = SAS_PHY_RESET_IN_PROGRESS;
180 		break;
181 
182 	default:
183 	case MPI2_SAS_NEG_LINK_RATE_SATA_OOB_COMPLETE:
184 	case MPI2_SAS_NEG_LINK_RATE_UNKNOWN_LINK_RATE:
185 		rc = SAS_LINK_RATE_UNKNOWN;
186 		break;
187 	}
188 	return rc;
189 }
190 
191 /**
192  * _transport_set_identify - set identify for phys and end devices
193  * @ioc: per adapter object
194  * @handle: device handle
195  * @identify: sas identify info
196  *
197  * Populates sas identify info.
198  *
199  * Return: 0 for success, non-zero for failure.
200  */
201 static int
_transport_set_identify(struct MPT3SAS_ADAPTER * ioc,u16 handle,struct sas_identify * identify)202 _transport_set_identify(struct MPT3SAS_ADAPTER *ioc, u16 handle,
203 	struct sas_identify *identify)
204 {
205 	Mpi2SasDevicePage0_t sas_device_pg0;
206 	Mpi2ConfigReply_t mpi_reply;
207 	u32 device_info;
208 	u32 ioc_status;
209 
210 	if (ioc->shost_recovery || ioc->pci_error_recovery) {
211 		ioc_info(ioc, "%s: host reset in progress!\n", __func__);
212 		return -EFAULT;
213 	}
214 
215 	if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
216 	    MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
217 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
218 			__FILE__, __LINE__, __func__);
219 		return -ENXIO;
220 	}
221 
222 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
223 	    MPI2_IOCSTATUS_MASK;
224 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
225 		ioc_err(ioc, "handle(0x%04x), ioc_status(0x%04x) failure at %s:%d/%s()!\n",
226 			handle, ioc_status, __FILE__, __LINE__, __func__);
227 		return -EIO;
228 	}
229 
230 	memset(identify, 0, sizeof(struct sas_identify));
231 	device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
232 
233 	/* sas_address */
234 	identify->sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
235 
236 	/* phy number of the parent device this device is linked to */
237 	identify->phy_identifier = sas_device_pg0.PhyNum;
238 
239 	/* device_type */
240 	switch (device_info & MPI2_SAS_DEVICE_INFO_MASK_DEVICE_TYPE) {
241 	case MPI2_SAS_DEVICE_INFO_NO_DEVICE:
242 		identify->device_type = SAS_PHY_UNUSED;
243 		break;
244 	case MPI2_SAS_DEVICE_INFO_END_DEVICE:
245 		identify->device_type = SAS_END_DEVICE;
246 		break;
247 	case MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER:
248 		identify->device_type = SAS_EDGE_EXPANDER_DEVICE;
249 		break;
250 	case MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER:
251 		identify->device_type = SAS_FANOUT_EXPANDER_DEVICE;
252 		break;
253 	}
254 
255 	/* initiator_port_protocols */
256 	if (device_info & MPI2_SAS_DEVICE_INFO_SSP_INITIATOR)
257 		identify->initiator_port_protocols |= SAS_PROTOCOL_SSP;
258 	if (device_info & MPI2_SAS_DEVICE_INFO_STP_INITIATOR)
259 		identify->initiator_port_protocols |= SAS_PROTOCOL_STP;
260 	if (device_info & MPI2_SAS_DEVICE_INFO_SMP_INITIATOR)
261 		identify->initiator_port_protocols |= SAS_PROTOCOL_SMP;
262 	if (device_info & MPI2_SAS_DEVICE_INFO_SATA_HOST)
263 		identify->initiator_port_protocols |= SAS_PROTOCOL_SATA;
264 
265 	/* target_port_protocols */
266 	if (device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET)
267 		identify->target_port_protocols |= SAS_PROTOCOL_SSP;
268 	if (device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET)
269 		identify->target_port_protocols |= SAS_PROTOCOL_STP;
270 	if (device_info & MPI2_SAS_DEVICE_INFO_SMP_TARGET)
271 		identify->target_port_protocols |= SAS_PROTOCOL_SMP;
272 	if (device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
273 		identify->target_port_protocols |= SAS_PROTOCOL_SATA;
274 
275 	return 0;
276 }
277 
278 /**
279  * mpt3sas_transport_done -  internal transport layer callback handler.
280  * @ioc: per adapter object
281  * @smid: system request message index
282  * @msix_index: MSIX table index supplied by the OS
283  * @reply: reply message frame(lower 32bit addr)
284  *
285  * Callback handler when sending internal generated transport cmds.
286  * The callback index passed is `ioc->transport_cb_idx`
287  *
288  * Return: 1 meaning mf should be freed from _base_interrupt
289  *         0 means the mf is freed from this function.
290  */
291 u8
mpt3sas_transport_done(struct MPT3SAS_ADAPTER * ioc,u16 smid,u8 msix_index,u32 reply)292 mpt3sas_transport_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
293 	u32 reply)
294 {
295 	MPI2DefaultReply_t *mpi_reply;
296 
297 	mpi_reply =  mpt3sas_base_get_reply_virt_addr(ioc, reply);
298 	if (ioc->transport_cmds.status == MPT3_CMD_NOT_USED)
299 		return 1;
300 	if (ioc->transport_cmds.smid != smid)
301 		return 1;
302 	ioc->transport_cmds.status |= MPT3_CMD_COMPLETE;
303 	if (mpi_reply) {
304 		memcpy(ioc->transport_cmds.reply, mpi_reply,
305 		    mpi_reply->MsgLength*4);
306 		ioc->transport_cmds.status |= MPT3_CMD_REPLY_VALID;
307 	}
308 	ioc->transport_cmds.status &= ~MPT3_CMD_PENDING;
309 	complete(&ioc->transport_cmds.done);
310 	return 1;
311 }
312 
313 /* report manufacture request structure */
314 struct rep_manu_request {
315 	u8 smp_frame_type;
316 	u8 function;
317 	u8 reserved;
318 	u8 request_length;
319 };
320 
321 /* report manufacture reply structure */
322 struct rep_manu_reply {
323 	u8 smp_frame_type; /* 0x41 */
324 	u8 function; /* 0x01 */
325 	u8 function_result;
326 	u8 response_length;
327 	u16 expander_change_count;
328 	u8 reserved0[2];
329 	u8 sas_format;
330 	u8 reserved2[3];
331 	u8 vendor_id[SAS_EXPANDER_VENDOR_ID_LEN];
332 	u8 product_id[SAS_EXPANDER_PRODUCT_ID_LEN];
333 	u8 product_rev[SAS_EXPANDER_PRODUCT_REV_LEN];
334 	u8 component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN];
335 	u16 component_id;
336 	u8 component_revision_id;
337 	u8 reserved3;
338 	u8 vendor_specific[8];
339 };
340 
341 /**
342  * _transport_expander_report_manufacture - obtain SMP report_manufacture
343  * @ioc: per adapter object
344  * @sas_address: expander sas address
345  * @edev: the sas_expander_device object
346  * @port_id: Port ID number
347  *
348  * Fills in the sas_expander_device object when SMP port is created.
349  *
350  * Return: 0 for success, non-zero for failure.
351  */
352 static int
_transport_expander_report_manufacture(struct MPT3SAS_ADAPTER * ioc,u64 sas_address,struct sas_expander_device * edev,u8 port_id)353 _transport_expander_report_manufacture(struct MPT3SAS_ADAPTER *ioc,
354 	u64 sas_address, struct sas_expander_device *edev, u8 port_id)
355 {
356 	Mpi2SmpPassthroughRequest_t *mpi_request;
357 	Mpi2SmpPassthroughReply_t *mpi_reply;
358 	struct rep_manu_reply *manufacture_reply;
359 	struct rep_manu_request *manufacture_request;
360 	int rc;
361 	u16 smid;
362 	void *psge;
363 	u8 issue_reset = 0;
364 	void *data_out = NULL;
365 	dma_addr_t data_out_dma;
366 	dma_addr_t data_in_dma;
367 	size_t data_in_sz;
368 	size_t data_out_sz;
369 
370 	if (ioc->shost_recovery || ioc->pci_error_recovery) {
371 		ioc_info(ioc, "%s: host reset in progress!\n", __func__);
372 		return -EFAULT;
373 	}
374 
375 	mutex_lock(&ioc->transport_cmds.mutex);
376 
377 	if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
378 		ioc_err(ioc, "%s: transport_cmds in use\n", __func__);
379 		rc = -EAGAIN;
380 		goto out;
381 	}
382 	ioc->transport_cmds.status = MPT3_CMD_PENDING;
383 
384 	rc = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT);
385 	if (rc)
386 		goto out;
387 
388 	smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
389 	if (!smid) {
390 		ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
391 		rc = -EAGAIN;
392 		goto out;
393 	}
394 
395 	rc = 0;
396 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
397 	ioc->transport_cmds.smid = smid;
398 
399 	data_out_sz = sizeof(struct rep_manu_request);
400 	data_in_sz = sizeof(struct rep_manu_reply);
401 	data_out = dma_alloc_coherent(&ioc->pdev->dev, data_out_sz + data_in_sz,
402 			&data_out_dma, GFP_KERNEL);
403 	if (!data_out) {
404 		pr_err("failure at %s:%d/%s()!\n", __FILE__,
405 		    __LINE__, __func__);
406 		rc = -ENOMEM;
407 		mpt3sas_base_free_smid(ioc, smid);
408 		goto out;
409 	}
410 
411 	data_in_dma = data_out_dma + sizeof(struct rep_manu_request);
412 
413 	manufacture_request = data_out;
414 	manufacture_request->smp_frame_type = 0x40;
415 	manufacture_request->function = 1;
416 	manufacture_request->reserved = 0;
417 	manufacture_request->request_length = 0;
418 
419 	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
420 	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
421 	mpi_request->PhysicalPort = port_id;
422 	mpi_request->SASAddress = cpu_to_le64(sas_address);
423 	mpi_request->RequestDataLength = cpu_to_le16(data_out_sz);
424 	psge = &mpi_request->SGL;
425 
426 	ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
427 	    data_in_sz);
428 
429 	dtransportprintk(ioc,
430 			 ioc_info(ioc, "report_manufacture - send to sas_addr(0x%016llx)\n",
431 				  (u64)sas_address));
432 	init_completion(&ioc->transport_cmds.done);
433 	ioc->put_smid_default(ioc, smid);
434 	wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
435 
436 	if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
437 		ioc_err(ioc, "%s: timeout\n", __func__);
438 		_debug_dump_mf(mpi_request,
439 		    sizeof(Mpi2SmpPassthroughRequest_t)/4);
440 		if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
441 			issue_reset = 1;
442 		goto issue_host_reset;
443 	}
444 
445 	dtransportprintk(ioc, ioc_info(ioc, "report_manufacture - complete\n"));
446 
447 	if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
448 		u8 *tmp;
449 
450 		mpi_reply = ioc->transport_cmds.reply;
451 
452 		dtransportprintk(ioc,
453 				 ioc_info(ioc, "report_manufacture - reply data transfer size(%d)\n",
454 					  le16_to_cpu(mpi_reply->ResponseDataLength)));
455 
456 		if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
457 		    sizeof(struct rep_manu_reply))
458 			goto out;
459 
460 		manufacture_reply = data_out + sizeof(struct rep_manu_request);
461 		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
_transport_delete_port(struct MPT3SAS_ADAPTER * ioc,struct _sas_port * mpt3sas_port)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
_transport_delete_phy(struct MPT3SAS_ADAPTER * ioc,struct _sas_port * mpt3sas_port,struct _sas_phy * mpt3sas_phy)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
_transport_add_phy(struct MPT3SAS_ADAPTER * ioc,struct _sas_port * mpt3sas_port,struct _sas_phy * mpt3sas_phy)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
mpt3sas_transport_add_phy_to_an_existing_port(struct MPT3SAS_ADAPTER * ioc,struct _sas_node * sas_node,struct _sas_phy * mpt3sas_phy,u64 sas_address,struct hba_port * port)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
mpt3sas_transport_del_phy_from_an_existing_port(struct MPT3SAS_ADAPTER * ioc,struct _sas_node * sas_node,struct _sas_phy * mpt3sas_phy)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
_transport_sanity_check(struct MPT3SAS_ADAPTER * ioc,struct _sas_node * sas_node,u64 sas_address,struct hba_port * port)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 *
mpt3sas_transport_port_add(struct MPT3SAS_ADAPTER * ioc,u16 handle,u64 sas_address,struct hba_port * hba_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 		sas_rphy_free(rphy);
833 		rphy = NULL;
834 	}
835 
836 	if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) {
837 		sas_device->pend_sas_rphy_add = 0;
838 		sas_device_put(sas_device);
839 	}
840 
841 	dev_info(&rphy->dev,
842 	    "add: handle(0x%04x), sas_addr(0x%016llx)\n", handle,
843 	    (unsigned long long)mpt3sas_port->remote_identify.sas_address);
844 
845 	mpt3sas_port->rphy = rphy;
846 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
847 	list_add_tail(&mpt3sas_port->port_list, &sas_node->sas_port_list);
848 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
849 
850 	/* fill in report manufacture */
851 	if (mpt3sas_port->remote_identify.device_type ==
852 	    MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
853 	    mpt3sas_port->remote_identify.device_type ==
854 	    MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
855 		_transport_expander_report_manufacture(ioc,
856 		    mpt3sas_port->remote_identify.sas_address,
857 		    rphy_to_expander_device(rphy), hba_port->port_id);
858 	return mpt3sas_port;
859 
860  out_fail:
861 	list_for_each_entry_safe(mpt3sas_phy, next, &mpt3sas_port->phy_list,
862 	    port_siblings)
863 		list_del(&mpt3sas_phy->port_siblings);
864 	kfree(mpt3sas_port);
865 	return NULL;
866 }
867 
868 /**
869  * mpt3sas_transport_port_remove - remove port from the list
870  * @ioc: per adapter object
871  * @sas_address: sas address of attached device
872  * @sas_address_parent: sas address of parent expander or sas host
873  * @port: hba port entry
874  * Context: This function will acquire ioc->sas_node_lock.
875  *
876  * Removing object and freeing associated memory from the
877  * ioc->sas_port_list.
878  */
879 void
mpt3sas_transport_port_remove(struct MPT3SAS_ADAPTER * ioc,u64 sas_address,u64 sas_address_parent,struct hba_port * port)880 mpt3sas_transport_port_remove(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
881 	u64 sas_address_parent, struct hba_port *port)
882 {
883 	int i;
884 	unsigned long flags;
885 	struct _sas_port *mpt3sas_port, *next;
886 	struct _sas_node *sas_node;
887 	u8 found = 0;
888 	struct _sas_phy *mpt3sas_phy, *next_phy;
889 	struct hba_port *hba_port_next, *hba_port = NULL;
890 	struct virtual_phy *vphy, *vphy_next = NULL;
891 
892 	if (!port)
893 		return;
894 
895 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
896 	sas_node = _transport_sas_node_find_by_sas_address(ioc,
897 	    sas_address_parent, port);
898 	if (!sas_node) {
899 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
900 		return;
901 	}
902 	list_for_each_entry_safe(mpt3sas_port, next, &sas_node->sas_port_list,
903 	    port_list) {
904 		if (mpt3sas_port->remote_identify.sas_address != sas_address)
905 			continue;
906 		if (mpt3sas_port->hba_port != port)
907 			continue;
908 		found = 1;
909 		list_del(&mpt3sas_port->port_list);
910 		goto out;
911 	}
912  out:
913 	if (!found) {
914 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
915 		return;
916 	}
917 
918 	if (sas_node->handle <= ioc->sas_hba.num_phys &&
919 	    (ioc->multipath_on_hba)) {
920 		if (port->vphys_mask) {
921 			list_for_each_entry_safe(vphy, vphy_next,
922 			    &port->vphys_list, list) {
923 				if (vphy->sas_address != sas_address)
924 					continue;
925 				ioc_info(ioc,
926 				    "remove vphy entry: %p of port:%p,from %d port's vphys list\n",
927 				    vphy, port, port->port_id);
928 				port->vphys_mask &= ~vphy->phy_mask;
929 				list_del(&vphy->list);
930 				kfree(vphy);
931 			}
932 		}
933 
934 		list_for_each_entry_safe(hba_port, hba_port_next,
935 		    &ioc->port_table_list, list) {
936 			if (hba_port != port)
937 				continue;
938 			/*
939 			 * Delete hba_port object if
940 			 *  - hba_port object's sas address matches with current
941 			 *    removed device's sas address and no vphy's
942 			 *    associated with it.
943 			 *  - Current removed device is a vSES device and
944 			 *    none of the other direct attached device have
945 			 *    this vSES device's port number (hence hba_port
946 			 *    object sas_address field will be zero).
947 			 */
948 			if ((hba_port->sas_address == sas_address ||
949 			    !hba_port->sas_address) && !hba_port->vphys_mask) {
950 				ioc_info(ioc,
951 				    "remove hba_port entry: %p port: %d from hba_port list\n",
952 				    hba_port, hba_port->port_id);
953 				list_del(&hba_port->list);
954 				kfree(hba_port);
955 			} else if (hba_port->sas_address == sas_address &&
956 			    hba_port->vphys_mask) {
957 				/*
958 				 * Current removed device is a non vSES device
959 				 * and a vSES device has the same port number
960 				 * as of current device's port number. Hence
961 				 * only clear the sas_address filed, don't
962 				 * delete the hba_port object.
963 				 */
964 				ioc_info(ioc,
965 				    "clearing sas_address from hba_port entry: %p port: %d from hba_port list\n",
966 				    hba_port, hba_port->port_id);
967 				port->sas_address = 0;
968 			}
969 			break;
970 		}
971 	}
972 
973 	for (i = 0; i < sas_node->num_phys; i++) {
974 		if (sas_node->phy[i].remote_identify.sas_address == sas_address)
975 			memset(&sas_node->phy[i].remote_identify, 0 ,
976 			    sizeof(struct sas_identify));
977 	}
978 
979 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
980 
981 	list_for_each_entry_safe(mpt3sas_phy, next_phy,
982 	    &mpt3sas_port->phy_list, port_siblings) {
983 		if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
984 			dev_printk(KERN_INFO, &mpt3sas_port->port->dev,
985 			    "remove: sas_addr(0x%016llx), phy(%d)\n",
986 			    (unsigned long long)
987 			    mpt3sas_port->remote_identify.sas_address,
988 			    mpt3sas_phy->phy_id);
989 		mpt3sas_phy->phy_belongs_to_port = 0;
990 		if (!ioc->remove_host)
991 			sas_port_delete_phy(mpt3sas_port->port,
992 						mpt3sas_phy->phy);
993 		list_del(&mpt3sas_phy->port_siblings);
994 	}
995 	if (!ioc->remove_host)
996 		sas_port_delete(mpt3sas_port->port);
997 	ioc_info(ioc, "%s: removed: sas_addr(0x%016llx)\n",
998 	    __func__, (unsigned long long)sas_address);
999 	kfree(mpt3sas_port);
1000 }
1001 
1002 /**
1003  * mpt3sas_transport_add_host_phy - report sas_host phy to transport
1004  * @ioc: per adapter object
1005  * @mpt3sas_phy: mpt3sas per phy object
1006  * @phy_pg0: sas phy page 0
1007  * @parent_dev: parent device class object
1008  *
1009  * Return: 0 for success, non-zero for failure.
1010  */
1011 int
mpt3sas_transport_add_host_phy(struct MPT3SAS_ADAPTER * ioc,struct _sas_phy * mpt3sas_phy,Mpi2SasPhyPage0_t phy_pg0,struct device * parent_dev)1012 mpt3sas_transport_add_host_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
1013 	*mpt3sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
1014 {
1015 	struct sas_phy *phy;
1016 	int phy_index = mpt3sas_phy->phy_id;
1017 
1018 
1019 	INIT_LIST_HEAD(&mpt3sas_phy->port_siblings);
1020 	phy = sas_phy_alloc(parent_dev, phy_index);
1021 	if (!phy) {
1022 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1023 			__FILE__, __LINE__, __func__);
1024 		return -1;
1025 	}
1026 	if ((_transport_set_identify(ioc, mpt3sas_phy->handle,
1027 	    &mpt3sas_phy->identify))) {
1028 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1029 			__FILE__, __LINE__, __func__);
1030 		sas_phy_free(phy);
1031 		return -1;
1032 	}
1033 	phy->identify = mpt3sas_phy->identify;
1034 	mpt3sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
1035 	if (mpt3sas_phy->attached_handle)
1036 		_transport_set_identify(ioc, mpt3sas_phy->attached_handle,
1037 		    &mpt3sas_phy->remote_identify);
1038 	phy->identify.phy_identifier = mpt3sas_phy->phy_id;
1039 	phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1040 	    phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1041 	phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
1042 	    phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
1043 	phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
1044 	    phy_pg0.HwLinkRate >> 4);
1045 	phy->minimum_linkrate = _transport_convert_phy_link_rate(
1046 	    phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1047 	phy->maximum_linkrate = _transport_convert_phy_link_rate(
1048 	    phy_pg0.ProgrammedLinkRate >> 4);
1049 	phy->hostdata = mpt3sas_phy->port;
1050 
1051 	if ((sas_phy_add(phy))) {
1052 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1053 			__FILE__, __LINE__, __func__);
1054 		sas_phy_free(phy);
1055 		return -1;
1056 	}
1057 	if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1058 		dev_printk(KERN_INFO, &phy->dev,
1059 		    "add: handle(0x%04x), sas_addr(0x%016llx)\n"
1060 		    "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1061 		    mpt3sas_phy->handle, (unsigned long long)
1062 		    mpt3sas_phy->identify.sas_address,
1063 		    mpt3sas_phy->attached_handle,
1064 		    (unsigned long long)
1065 		    mpt3sas_phy->remote_identify.sas_address);
1066 	mpt3sas_phy->phy = phy;
1067 	return 0;
1068 }
1069 
1070 
1071 /**
1072  * mpt3sas_transport_add_expander_phy - report expander phy to transport
1073  * @ioc: per adapter object
1074  * @mpt3sas_phy: mpt3sas per phy object
1075  * @expander_pg1: expander page 1
1076  * @parent_dev: parent device class object
1077  *
1078  * Return: 0 for success, non-zero for failure.
1079  */
1080 int
mpt3sas_transport_add_expander_phy(struct MPT3SAS_ADAPTER * ioc,struct _sas_phy * mpt3sas_phy,Mpi2ExpanderPage1_t expander_pg1,struct device * parent_dev)1081 mpt3sas_transport_add_expander_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
1082 	*mpt3sas_phy, Mpi2ExpanderPage1_t expander_pg1,
1083 	struct device *parent_dev)
1084 {
1085 	struct sas_phy *phy;
1086 	int phy_index = mpt3sas_phy->phy_id;
1087 
1088 	INIT_LIST_HEAD(&mpt3sas_phy->port_siblings);
1089 	phy = sas_phy_alloc(parent_dev, phy_index);
1090 	if (!phy) {
1091 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1092 			__FILE__, __LINE__, __func__);
1093 		return -1;
1094 	}
1095 	if ((_transport_set_identify(ioc, mpt3sas_phy->handle,
1096 	    &mpt3sas_phy->identify))) {
1097 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1098 			__FILE__, __LINE__, __func__);
1099 		sas_phy_free(phy);
1100 		return -1;
1101 	}
1102 	phy->identify = mpt3sas_phy->identify;
1103 	mpt3sas_phy->attached_handle =
1104 	    le16_to_cpu(expander_pg1.AttachedDevHandle);
1105 	if (mpt3sas_phy->attached_handle)
1106 		_transport_set_identify(ioc, mpt3sas_phy->attached_handle,
1107 		    &mpt3sas_phy->remote_identify);
1108 	phy->identify.phy_identifier = mpt3sas_phy->phy_id;
1109 	phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1110 	    expander_pg1.NegotiatedLinkRate &
1111 	    MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1112 	phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
1113 	    expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
1114 	phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
1115 	    expander_pg1.HwLinkRate >> 4);
1116 	phy->minimum_linkrate = _transport_convert_phy_link_rate(
1117 	    expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1118 	phy->maximum_linkrate = _transport_convert_phy_link_rate(
1119 	    expander_pg1.ProgrammedLinkRate >> 4);
1120 	phy->hostdata = mpt3sas_phy->port;
1121 
1122 	if ((sas_phy_add(phy))) {
1123 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1124 			__FILE__, __LINE__, __func__);
1125 		sas_phy_free(phy);
1126 		return -1;
1127 	}
1128 	if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1129 		dev_printk(KERN_INFO, &phy->dev,
1130 		    "add: handle(0x%04x), sas_addr(0x%016llx)\n"
1131 		    "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1132 		    mpt3sas_phy->handle, (unsigned long long)
1133 		    mpt3sas_phy->identify.sas_address,
1134 		    mpt3sas_phy->attached_handle,
1135 		    (unsigned long long)
1136 		    mpt3sas_phy->remote_identify.sas_address);
1137 	mpt3sas_phy->phy = phy;
1138 	return 0;
1139 }
1140 
1141 /**
1142  * mpt3sas_transport_update_links - refreshing phy link changes
1143  * @ioc: per adapter object
1144  * @sas_address: sas address of parent expander or sas host
1145  * @handle: attached device handle
1146  * @phy_number: phy number
1147  * @link_rate: new link rate
1148  * @port: hba port entry
1149  *
1150  * Return nothing.
1151  */
1152 void
mpt3sas_transport_update_links(struct MPT3SAS_ADAPTER * ioc,u64 sas_address,u16 handle,u8 phy_number,u8 link_rate,struct hba_port * port)1153 mpt3sas_transport_update_links(struct MPT3SAS_ADAPTER *ioc,
1154 	u64 sas_address, u16 handle, u8 phy_number, u8 link_rate,
1155 	struct hba_port *port)
1156 {
1157 	unsigned long flags;
1158 	struct _sas_node *sas_node;
1159 	struct _sas_phy *mpt3sas_phy;
1160 	struct hba_port *hba_port = NULL;
1161 
1162 	if (ioc->shost_recovery || ioc->pci_error_recovery)
1163 		return;
1164 
1165 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
1166 	sas_node = _transport_sas_node_find_by_sas_address(ioc,
1167 	    sas_address, port);
1168 	if (!sas_node) {
1169 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1170 		return;
1171 	}
1172 
1173 	mpt3sas_phy = &sas_node->phy[phy_number];
1174 	mpt3sas_phy->attached_handle = handle;
1175 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1176 	if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5)) {
1177 		_transport_set_identify(ioc, handle,
1178 		    &mpt3sas_phy->remote_identify);
1179 		if ((sas_node->handle <= ioc->sas_hba.num_phys) &&
1180 		    (ioc->multipath_on_hba)) {
1181 			list_for_each_entry(hba_port,
1182 			    &ioc->port_table_list, list) {
1183 				if (hba_port->sas_address == sas_address &&
1184 				    hba_port == port)
1185 					hba_port->phy_mask |=
1186 					    (1 << mpt3sas_phy->phy_id);
1187 			}
1188 		}
1189 		mpt3sas_transport_add_phy_to_an_existing_port(ioc, sas_node,
1190 		    mpt3sas_phy, mpt3sas_phy->remote_identify.sas_address,
1191 		    port);
1192 	} else
1193 		memset(&mpt3sas_phy->remote_identify, 0 , sizeof(struct
1194 		    sas_identify));
1195 
1196 	if (mpt3sas_phy->phy)
1197 		mpt3sas_phy->phy->negotiated_linkrate =
1198 		    _transport_convert_phy_link_rate(link_rate);
1199 
1200 	if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1201 		dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
1202 		    "refresh: parent sas_addr(0x%016llx),\n"
1203 		    "\tlink_rate(0x%02x), phy(%d)\n"
1204 		    "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1205 		    (unsigned long long)sas_address,
1206 		    link_rate, phy_number, handle, (unsigned long long)
1207 		    mpt3sas_phy->remote_identify.sas_address);
1208 }
1209 
1210 static inline void *
phy_to_ioc(struct sas_phy * phy)1211 phy_to_ioc(struct sas_phy *phy)
1212 {
1213 	struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1214 	return shost_priv(shost);
1215 }
1216 
1217 static inline void *
rphy_to_ioc(struct sas_rphy * rphy)1218 rphy_to_ioc(struct sas_rphy *rphy)
1219 {
1220 	struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1221 	return shost_priv(shost);
1222 }
1223 
1224 /* report phy error log structure */
1225 struct phy_error_log_request {
1226 	u8 smp_frame_type; /* 0x40 */
1227 	u8 function; /* 0x11 */
1228 	u8 allocated_response_length;
1229 	u8 request_length; /* 02 */
1230 	u8 reserved_1[5];
1231 	u8 phy_identifier;
1232 	u8 reserved_2[2];
1233 };
1234 
1235 /* report phy error log reply structure */
1236 struct phy_error_log_reply {
1237 	u8 smp_frame_type; /* 0x41 */
1238 	u8 function; /* 0x11 */
1239 	u8 function_result;
1240 	u8 response_length;
1241 	__be16 expander_change_count;
1242 	u8 reserved_1[3];
1243 	u8 phy_identifier;
1244 	u8 reserved_2[2];
1245 	__be32 invalid_dword;
1246 	__be32 running_disparity_error;
1247 	__be32 loss_of_dword_sync;
1248 	__be32 phy_reset_problem;
1249 };
1250 
1251 /**
1252  * _transport_get_expander_phy_error_log - return expander counters
1253  * @ioc: per adapter object
1254  * @phy: The sas phy object
1255  *
1256  * Return: 0 for success, non-zero for failure.
1257  *
1258  */
1259 static int
_transport_get_expander_phy_error_log(struct MPT3SAS_ADAPTER * ioc,struct sas_phy * phy)1260 _transport_get_expander_phy_error_log(struct MPT3SAS_ADAPTER *ioc,
1261 	struct sas_phy *phy)
1262 {
1263 	Mpi2SmpPassthroughRequest_t *mpi_request;
1264 	Mpi2SmpPassthroughReply_t *mpi_reply;
1265 	struct phy_error_log_request *phy_error_log_request;
1266 	struct phy_error_log_reply *phy_error_log_reply;
1267 	int rc;
1268 	u16 smid;
1269 	void *psge;
1270 	u8 issue_reset = 0;
1271 	void *data_out = NULL;
1272 	dma_addr_t data_out_dma;
1273 	u32 sz;
1274 
1275 	if (ioc->shost_recovery || ioc->pci_error_recovery) {
1276 		ioc_info(ioc, "%s: host reset in progress!\n", __func__);
1277 		return -EFAULT;
1278 	}
1279 
1280 	mutex_lock(&ioc->transport_cmds.mutex);
1281 
1282 	if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1283 		ioc_err(ioc, "%s: transport_cmds in use\n", __func__);
1284 		rc = -EAGAIN;
1285 		goto out;
1286 	}
1287 	ioc->transport_cmds.status = MPT3_CMD_PENDING;
1288 
1289 	rc = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT);
1290 	if (rc)
1291 		goto out;
1292 
1293 	smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
1294 	if (!smid) {
1295 		ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
1296 		rc = -EAGAIN;
1297 		goto out;
1298 	}
1299 
1300 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1301 	ioc->transport_cmds.smid = smid;
1302 
1303 	sz = sizeof(struct phy_error_log_request) +
1304 	    sizeof(struct phy_error_log_reply);
1305 	data_out = dma_alloc_coherent(&ioc->pdev->dev, sz, &data_out_dma,
1306 			GFP_KERNEL);
1307 	if (!data_out) {
1308 		pr_err("failure at %s:%d/%s()!\n", __FILE__,
1309 		    __LINE__, __func__);
1310 		rc = -ENOMEM;
1311 		mpt3sas_base_free_smid(ioc, smid);
1312 		goto out;
1313 	}
1314 
1315 	rc = -EINVAL;
1316 	memset(data_out, 0, sz);
1317 	phy_error_log_request = data_out;
1318 	phy_error_log_request->smp_frame_type = 0x40;
1319 	phy_error_log_request->function = 0x11;
1320 	phy_error_log_request->request_length = 2;
1321 	phy_error_log_request->allocated_response_length = 0;
1322 	phy_error_log_request->phy_identifier = phy->number;
1323 
1324 	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1325 	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1326 	mpi_request->PhysicalPort = _transport_get_port_id_by_sas_phy(phy);
1327 	mpi_request->VF_ID = 0; /* TODO */
1328 	mpi_request->VP_ID = 0;
1329 	mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1330 	mpi_request->RequestDataLength =
1331 	    cpu_to_le16(sizeof(struct phy_error_log_request));
1332 	psge = &mpi_request->SGL;
1333 
1334 	ioc->build_sg(ioc, psge, data_out_dma,
1335 		sizeof(struct phy_error_log_request),
1336 	    data_out_dma + sizeof(struct phy_error_log_request),
1337 	    sizeof(struct phy_error_log_reply));
1338 
1339 	dtransportprintk(ioc,
1340 			 ioc_info(ioc, "phy_error_log - send to sas_addr(0x%016llx), phy(%d)\n",
1341 				  (u64)phy->identify.sas_address,
1342 				  phy->number));
1343 	init_completion(&ioc->transport_cmds.done);
1344 	ioc->put_smid_default(ioc, smid);
1345 	wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
1346 
1347 	if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
1348 		ioc_err(ioc, "%s: timeout\n", __func__);
1349 		_debug_dump_mf(mpi_request,
1350 		    sizeof(Mpi2SmpPassthroughRequest_t)/4);
1351 		if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
1352 			issue_reset = 1;
1353 		goto issue_host_reset;
1354 	}
1355 
1356 	dtransportprintk(ioc, ioc_info(ioc, "phy_error_log - complete\n"));
1357 
1358 	if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
1359 
1360 		mpi_reply = ioc->transport_cmds.reply;
1361 
1362 		dtransportprintk(ioc,
1363 				 ioc_info(ioc, "phy_error_log - reply data transfer size(%d)\n",
1364 					  le16_to_cpu(mpi_reply->ResponseDataLength)));
1365 
1366 		if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1367 		    sizeof(struct phy_error_log_reply))
1368 			goto out;
1369 
1370 		phy_error_log_reply = data_out +
1371 		    sizeof(struct phy_error_log_request);
1372 
1373 		dtransportprintk(ioc,
1374 				 ioc_info(ioc, "phy_error_log - function_result(%d)\n",
1375 					  phy_error_log_reply->function_result));
1376 
1377 		phy->invalid_dword_count =
1378 		    be32_to_cpu(phy_error_log_reply->invalid_dword);
1379 		phy->running_disparity_error_count =
1380 		    be32_to_cpu(phy_error_log_reply->running_disparity_error);
1381 		phy->loss_of_dword_sync_count =
1382 		    be32_to_cpu(phy_error_log_reply->loss_of_dword_sync);
1383 		phy->phy_reset_problem_count =
1384 		    be32_to_cpu(phy_error_log_reply->phy_reset_problem);
1385 		rc = 0;
1386 	} else
1387 		dtransportprintk(ioc,
1388 				 ioc_info(ioc, "phy_error_log - no reply\n"));
1389 
1390  issue_host_reset:
1391 	if (issue_reset)
1392 		mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1393  out:
1394 	ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
1395 	if (data_out)
1396 		dma_free_coherent(&ioc->pdev->dev, sz, data_out, data_out_dma);
1397 
1398 	mutex_unlock(&ioc->transport_cmds.mutex);
1399 	return rc;
1400 }
1401 
1402 /**
1403  * _transport_get_linkerrors - return phy counters for both hba and expanders
1404  * @phy: The sas phy object
1405  *
1406  * Return: 0 for success, non-zero for failure.
1407  *
1408  */
1409 static int
_transport_get_linkerrors(struct sas_phy * phy)1410 _transport_get_linkerrors(struct sas_phy *phy)
1411 {
1412 	struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1413 	unsigned long flags;
1414 	Mpi2ConfigReply_t mpi_reply;
1415 	Mpi2SasPhyPage1_t phy_pg1;
1416 	struct hba_port *port = phy->hostdata;
1417 	int port_id = port->port_id;
1418 
1419 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
1420 	if (_transport_sas_node_find_by_sas_address(ioc,
1421 	    phy->identify.sas_address,
1422 	    mpt3sas_get_port_by_id(ioc, port_id, 0)) == NULL) {
1423 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1424 		return -EINVAL;
1425 	}
1426 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1427 
1428 	if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1429 		return _transport_get_expander_phy_error_log(ioc, phy);
1430 
1431 	/* get hba phy error logs */
1432 	if ((mpt3sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
1433 		    phy->number))) {
1434 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1435 			__FILE__, __LINE__, __func__);
1436 		return -ENXIO;
1437 	}
1438 
1439 	if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1440 		ioc_info(ioc, "phy(%d), ioc_status (0x%04x), loginfo(0x%08x)\n",
1441 			 phy->number,
1442 			 le16_to_cpu(mpi_reply.IOCStatus),
1443 			 le32_to_cpu(mpi_reply.IOCLogInfo));
1444 
1445 	phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
1446 	phy->running_disparity_error_count =
1447 	    le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
1448 	phy->loss_of_dword_sync_count =
1449 	    le32_to_cpu(phy_pg1.LossDwordSynchCount);
1450 	phy->phy_reset_problem_count =
1451 	    le32_to_cpu(phy_pg1.PhyResetProblemCount);
1452 	return 0;
1453 }
1454 
1455 /**
1456  * _transport_get_enclosure_identifier -
1457  * @rphy: The sas phy object
1458  * @identifier: ?
1459  *
1460  * Obtain the enclosure logical id for an expander.
1461  * Return: 0 for success, non-zero for failure.
1462  */
1463 static int
_transport_get_enclosure_identifier(struct sas_rphy * rphy,u64 * identifier)1464 _transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
1465 {
1466 	struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1467 	struct _sas_device *sas_device;
1468 	unsigned long flags;
1469 	int rc;
1470 
1471 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
1472 	sas_device = __mpt3sas_get_sdev_by_rphy(ioc, rphy);
1473 	if (sas_device) {
1474 		*identifier = sas_device->enclosure_logical_id;
1475 		rc = 0;
1476 		sas_device_put(sas_device);
1477 	} else {
1478 		*identifier = 0;
1479 		rc = -ENXIO;
1480 	}
1481 
1482 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1483 	return rc;
1484 }
1485 
1486 /**
1487  * _transport_get_bay_identifier -
1488  * @rphy: The sas phy object
1489  *
1490  * Return: the slot id for a device that resides inside an enclosure.
1491  */
1492 static int
_transport_get_bay_identifier(struct sas_rphy * rphy)1493 _transport_get_bay_identifier(struct sas_rphy *rphy)
1494 {
1495 	struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1496 	struct _sas_device *sas_device;
1497 	unsigned long flags;
1498 	int rc;
1499 
1500 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
1501 	sas_device = __mpt3sas_get_sdev_by_rphy(ioc, rphy);
1502 	if (sas_device) {
1503 		rc = sas_device->slot;
1504 		sas_device_put(sas_device);
1505 	} else {
1506 		rc = -ENXIO;
1507 	}
1508 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1509 	return rc;
1510 }
1511 
1512 /* phy control request structure */
1513 struct phy_control_request {
1514 	u8 smp_frame_type; /* 0x40 */
1515 	u8 function; /* 0x91 */
1516 	u8 allocated_response_length;
1517 	u8 request_length; /* 0x09 */
1518 	u16 expander_change_count;
1519 	u8 reserved_1[3];
1520 	u8 phy_identifier;
1521 	u8 phy_operation;
1522 	u8 reserved_2[13];
1523 	u64 attached_device_name;
1524 	u8 programmed_min_physical_link_rate;
1525 	u8 programmed_max_physical_link_rate;
1526 	u8 reserved_3[6];
1527 };
1528 
1529 /* phy control reply structure */
1530 struct phy_control_reply {
1531 	u8 smp_frame_type; /* 0x41 */
1532 	u8 function; /* 0x11 */
1533 	u8 function_result;
1534 	u8 response_length;
1535 };
1536 
1537 #define SMP_PHY_CONTROL_LINK_RESET	(0x01)
1538 #define SMP_PHY_CONTROL_HARD_RESET	(0x02)
1539 #define SMP_PHY_CONTROL_DISABLE		(0x03)
1540 
1541 /**
1542  * _transport_expander_phy_control - expander phy control
1543  * @ioc: per adapter object
1544  * @phy: The sas phy object
1545  * @phy_operation: ?
1546  *
1547  * Return: 0 for success, non-zero for failure.
1548  *
1549  */
1550 static int
_transport_expander_phy_control(struct MPT3SAS_ADAPTER * ioc,struct sas_phy * phy,u8 phy_operation)1551 _transport_expander_phy_control(struct MPT3SAS_ADAPTER *ioc,
1552 	struct sas_phy *phy, u8 phy_operation)
1553 {
1554 	Mpi2SmpPassthroughRequest_t *mpi_request;
1555 	Mpi2SmpPassthroughReply_t *mpi_reply;
1556 	struct phy_control_request *phy_control_request;
1557 	struct phy_control_reply *phy_control_reply;
1558 	int rc;
1559 	u16 smid;
1560 	void *psge;
1561 	u8 issue_reset = 0;
1562 	void *data_out = NULL;
1563 	dma_addr_t data_out_dma;
1564 	u32 sz;
1565 
1566 	if (ioc->shost_recovery || ioc->pci_error_recovery) {
1567 		ioc_info(ioc, "%s: host reset in progress!\n", __func__);
1568 		return -EFAULT;
1569 	}
1570 
1571 	mutex_lock(&ioc->transport_cmds.mutex);
1572 
1573 	if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1574 		ioc_err(ioc, "%s: transport_cmds in use\n", __func__);
1575 		rc = -EAGAIN;
1576 		goto out;
1577 	}
1578 	ioc->transport_cmds.status = MPT3_CMD_PENDING;
1579 
1580 	rc = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT);
1581 	if (rc)
1582 		goto out;
1583 
1584 	smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
1585 	if (!smid) {
1586 		ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
1587 		rc = -EAGAIN;
1588 		goto out;
1589 	}
1590 
1591 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1592 	ioc->transport_cmds.smid = smid;
1593 
1594 	sz = sizeof(struct phy_control_request) +
1595 	    sizeof(struct phy_control_reply);
1596 	data_out = dma_alloc_coherent(&ioc->pdev->dev, sz, &data_out_dma,
1597 			GFP_KERNEL);
1598 	if (!data_out) {
1599 		pr_err("failure at %s:%d/%s()!\n", __FILE__,
1600 		    __LINE__, __func__);
1601 		rc = -ENOMEM;
1602 		mpt3sas_base_free_smid(ioc, smid);
1603 		goto out;
1604 	}
1605 
1606 	rc = -EINVAL;
1607 	memset(data_out, 0, sz);
1608 	phy_control_request = data_out;
1609 	phy_control_request->smp_frame_type = 0x40;
1610 	phy_control_request->function = 0x91;
1611 	phy_control_request->request_length = 9;
1612 	phy_control_request->allocated_response_length = 0;
1613 	phy_control_request->phy_identifier = phy->number;
1614 	phy_control_request->phy_operation = phy_operation;
1615 	phy_control_request->programmed_min_physical_link_rate =
1616 	    phy->minimum_linkrate << 4;
1617 	phy_control_request->programmed_max_physical_link_rate =
1618 	    phy->maximum_linkrate << 4;
1619 
1620 	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1621 	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1622 	mpi_request->PhysicalPort = _transport_get_port_id_by_sas_phy(phy);
1623 	mpi_request->VF_ID = 0; /* TODO */
1624 	mpi_request->VP_ID = 0;
1625 	mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1626 	mpi_request->RequestDataLength =
1627 	    cpu_to_le16(sizeof(struct phy_error_log_request));
1628 	psge = &mpi_request->SGL;
1629 
1630 	ioc->build_sg(ioc, psge, data_out_dma,
1631 			    sizeof(struct phy_control_request),
1632 	    data_out_dma + sizeof(struct phy_control_request),
1633 	    sizeof(struct phy_control_reply));
1634 
1635 	dtransportprintk(ioc,
1636 			 ioc_info(ioc, "phy_control - send to sas_addr(0x%016llx), phy(%d), opcode(%d)\n",
1637 				  (u64)phy->identify.sas_address,
1638 				  phy->number, phy_operation));
1639 	init_completion(&ioc->transport_cmds.done);
1640 	ioc->put_smid_default(ioc, smid);
1641 	wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
1642 
1643 	if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
1644 		ioc_err(ioc, "%s: timeout\n", __func__);
1645 		_debug_dump_mf(mpi_request,
1646 		    sizeof(Mpi2SmpPassthroughRequest_t)/4);
1647 		if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
1648 			issue_reset = 1;
1649 		goto issue_host_reset;
1650 	}
1651 
1652 	dtransportprintk(ioc, ioc_info(ioc, "phy_control - complete\n"));
1653 
1654 	if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
1655 
1656 		mpi_reply = ioc->transport_cmds.reply;
1657 
1658 		dtransportprintk(ioc,
1659 				 ioc_info(ioc, "phy_control - reply data transfer size(%d)\n",
1660 					  le16_to_cpu(mpi_reply->ResponseDataLength)));
1661 
1662 		if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1663 		    sizeof(struct phy_control_reply))
1664 			goto out;
1665 
1666 		phy_control_reply = data_out +
1667 		    sizeof(struct phy_control_request);
1668 
1669 		dtransportprintk(ioc,
1670 				 ioc_info(ioc, "phy_control - function_result(%d)\n",
1671 					  phy_control_reply->function_result));
1672 
1673 		rc = 0;
1674 	} else
1675 		dtransportprintk(ioc,
1676 				 ioc_info(ioc, "phy_control - no reply\n"));
1677 
1678  issue_host_reset:
1679 	if (issue_reset)
1680 		mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1681  out:
1682 	ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
1683 	if (data_out)
1684 		dma_free_coherent(&ioc->pdev->dev, sz, data_out,
1685 				data_out_dma);
1686 
1687 	mutex_unlock(&ioc->transport_cmds.mutex);
1688 	return rc;
1689 }
1690 
1691 /**
1692  * _transport_phy_reset -
1693  * @phy: The sas phy object
1694  * @hard_reset:
1695  *
1696  * Return: 0 for success, non-zero for failure.
1697  */
1698 static int
_transport_phy_reset(struct sas_phy * phy,int hard_reset)1699 _transport_phy_reset(struct sas_phy *phy, int hard_reset)
1700 {
1701 	struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1702 	Mpi2SasIoUnitControlReply_t mpi_reply;
1703 	Mpi2SasIoUnitControlRequest_t mpi_request;
1704 	struct hba_port *port = phy->hostdata;
1705 	int port_id = port->port_id;
1706 	unsigned long flags;
1707 
1708 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
1709 	if (_transport_sas_node_find_by_sas_address(ioc,
1710 	    phy->identify.sas_address,
1711 	    mpt3sas_get_port_by_id(ioc, port_id, 0)) == NULL) {
1712 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1713 		return -EINVAL;
1714 	}
1715 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1716 
1717 	/* handle expander phys */
1718 	if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1719 		return _transport_expander_phy_control(ioc, phy,
1720 		    (hard_reset == 1) ? SMP_PHY_CONTROL_HARD_RESET :
1721 		    SMP_PHY_CONTROL_LINK_RESET);
1722 
1723 	/* handle hba phys */
1724 	memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
1725 	mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
1726 	mpi_request.Operation = hard_reset ?
1727 	    MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
1728 	mpi_request.PhyNum = phy->number;
1729 
1730 	if ((mpt3sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
1731 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1732 			__FILE__, __LINE__, __func__);
1733 		return -ENXIO;
1734 	}
1735 
1736 	if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1737 		ioc_info(ioc, "phy(%d), ioc_status(0x%04x), loginfo(0x%08x)\n",
1738 			 phy->number, le16_to_cpu(mpi_reply.IOCStatus),
1739 			 le32_to_cpu(mpi_reply.IOCLogInfo));
1740 
1741 	return 0;
1742 }
1743 
1744 /**
1745  * _transport_phy_enable - enable/disable phys
1746  * @phy: The sas phy object
1747  * @enable: enable phy when true
1748  *
1749  * Only support sas_host direct attached phys.
1750  * Return: 0 for success, non-zero for failure.
1751  */
1752 static int
_transport_phy_enable(struct sas_phy * phy,int enable)1753 _transport_phy_enable(struct sas_phy *phy, int enable)
1754 {
1755 	struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1756 	Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1757 	Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
1758 	Mpi2ConfigReply_t mpi_reply;
1759 	u16 ioc_status;
1760 	u16 sz;
1761 	int rc = 0;
1762 	unsigned long flags;
1763 	int i, discovery_active;
1764 	struct hba_port *port = phy->hostdata;
1765 	int port_id = port->port_id;
1766 
1767 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
1768 	if (_transport_sas_node_find_by_sas_address(ioc,
1769 	    phy->identify.sas_address,
1770 	    mpt3sas_get_port_by_id(ioc, port_id, 0)) == NULL) {
1771 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1772 		return -EINVAL;
1773 	}
1774 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1775 
1776 	/* handle expander phys */
1777 	if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1778 		return _transport_expander_phy_control(ioc, phy,
1779 		    (enable == 1) ? SMP_PHY_CONTROL_LINK_RESET :
1780 		    SMP_PHY_CONTROL_DISABLE);
1781 
1782 	/* handle hba phys */
1783 
1784 	/* read sas_iounit page 0 */
1785 	sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys *
1786 	    sizeof(Mpi2SasIOUnit0PhyData_t));
1787 	sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
1788 	if (!sas_iounit_pg0) {
1789 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1790 			__FILE__, __LINE__, __func__);
1791 		rc = -ENOMEM;
1792 		goto out;
1793 	}
1794 	if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
1795 	    sas_iounit_pg0, sz))) {
1796 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1797 			__FILE__, __LINE__, __func__);
1798 		rc = -ENXIO;
1799 		goto out;
1800 	}
1801 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1802 	    MPI2_IOCSTATUS_MASK;
1803 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1804 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1805 			__FILE__, __LINE__, __func__);
1806 		rc = -EIO;
1807 		goto out;
1808 	}
1809 
1810 	/* unable to enable/disable phys when when discovery is active */
1811 	for (i = 0, discovery_active = 0; i < ioc->sas_hba.num_phys ; i++) {
1812 		if (sas_iounit_pg0->PhyData[i].PortFlags &
1813 		    MPI2_SASIOUNIT0_PORTFLAGS_DISCOVERY_IN_PROGRESS) {
1814 			ioc_err(ioc, "discovery is active on port = %d, phy = %d: unable to enable/disable phys, try again later!\n",
1815 				sas_iounit_pg0->PhyData[i].Port, i);
1816 			discovery_active = 1;
1817 		}
1818 	}
1819 
1820 	if (discovery_active) {
1821 		rc = -EAGAIN;
1822 		goto out;
1823 	}
1824 
1825 	/* read sas_iounit page 1 */
1826 	sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1827 	    sizeof(Mpi2SasIOUnit1PhyData_t));
1828 	sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1829 	if (!sas_iounit_pg1) {
1830 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1831 			__FILE__, __LINE__, __func__);
1832 		rc = -ENOMEM;
1833 		goto out;
1834 	}
1835 	if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1836 	    sas_iounit_pg1, sz))) {
1837 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1838 			__FILE__, __LINE__, __func__);
1839 		rc = -ENXIO;
1840 		goto out;
1841 	}
1842 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1843 	    MPI2_IOCSTATUS_MASK;
1844 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1845 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1846 			__FILE__, __LINE__, __func__);
1847 		rc = -EIO;
1848 		goto out;
1849 	}
1850 
1851 	/* copy Port/PortFlags/PhyFlags from page 0 */
1852 	for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
1853 		sas_iounit_pg1->PhyData[i].Port =
1854 		    sas_iounit_pg0->PhyData[i].Port;
1855 		sas_iounit_pg1->PhyData[i].PortFlags =
1856 		    (sas_iounit_pg0->PhyData[i].PortFlags &
1857 		    MPI2_SASIOUNIT0_PORTFLAGS_AUTO_PORT_CONFIG);
1858 		sas_iounit_pg1->PhyData[i].PhyFlags =
1859 		    (sas_iounit_pg0->PhyData[i].PhyFlags &
1860 		    (MPI2_SASIOUNIT0_PHYFLAGS_ZONING_ENABLED +
1861 		    MPI2_SASIOUNIT0_PHYFLAGS_PHY_DISABLED));
1862 	}
1863 
1864 	if (enable)
1865 		sas_iounit_pg1->PhyData[phy->number].PhyFlags
1866 		    &= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1867 	else
1868 		sas_iounit_pg1->PhyData[phy->number].PhyFlags
1869 		    |= MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1870 
1871 	mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, sz);
1872 
1873 	/* link reset */
1874 	if (enable)
1875 		_transport_phy_reset(phy, 0);
1876 
1877  out:
1878 	kfree(sas_iounit_pg1);
1879 	kfree(sas_iounit_pg0);
1880 	return rc;
1881 }
1882 
1883 /**
1884  * _transport_phy_speed - set phy min/max link rates
1885  * @phy: The sas phy object
1886  * @rates: rates defined in sas_phy_linkrates
1887  *
1888  * Only support sas_host direct attached phys.
1889  *
1890  * Return: 0 for success, non-zero for failure.
1891  */
1892 static int
_transport_phy_speed(struct sas_phy * phy,struct sas_phy_linkrates * rates)1893 _transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
1894 {
1895 	struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1896 	Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1897 	Mpi2SasPhyPage0_t phy_pg0;
1898 	Mpi2ConfigReply_t mpi_reply;
1899 	u16 ioc_status;
1900 	u16 sz;
1901 	int i;
1902 	int rc = 0;
1903 	unsigned long flags;
1904 	struct hba_port *port = phy->hostdata;
1905 	int port_id = port->port_id;
1906 
1907 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
1908 	if (_transport_sas_node_find_by_sas_address(ioc,
1909 	    phy->identify.sas_address,
1910 	    mpt3sas_get_port_by_id(ioc, port_id, 0)) == NULL) {
1911 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1912 		return -EINVAL;
1913 	}
1914 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1915 
1916 	if (!rates->minimum_linkrate)
1917 		rates->minimum_linkrate = phy->minimum_linkrate;
1918 	else if (rates->minimum_linkrate < phy->minimum_linkrate_hw)
1919 		rates->minimum_linkrate = phy->minimum_linkrate_hw;
1920 
1921 	if (!rates->maximum_linkrate)
1922 		rates->maximum_linkrate = phy->maximum_linkrate;
1923 	else if (rates->maximum_linkrate > phy->maximum_linkrate_hw)
1924 		rates->maximum_linkrate = phy->maximum_linkrate_hw;
1925 
1926 	/* handle expander phys */
1927 	if (phy->identify.sas_address != ioc->sas_hba.sas_address) {
1928 		phy->minimum_linkrate = rates->minimum_linkrate;
1929 		phy->maximum_linkrate = rates->maximum_linkrate;
1930 		return _transport_expander_phy_control(ioc, phy,
1931 		    SMP_PHY_CONTROL_LINK_RESET);
1932 	}
1933 
1934 	/* handle hba phys */
1935 
1936 	/* sas_iounit page 1 */
1937 	sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1938 	    sizeof(Mpi2SasIOUnit1PhyData_t));
1939 	sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1940 	if (!sas_iounit_pg1) {
1941 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1942 			__FILE__, __LINE__, __func__);
1943 		rc = -ENOMEM;
1944 		goto out;
1945 	}
1946 	if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1947 	    sas_iounit_pg1, sz))) {
1948 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1949 			__FILE__, __LINE__, __func__);
1950 		rc = -ENXIO;
1951 		goto out;
1952 	}
1953 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1954 	    MPI2_IOCSTATUS_MASK;
1955 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1956 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1957 			__FILE__, __LINE__, __func__);
1958 		rc = -EIO;
1959 		goto out;
1960 	}
1961 
1962 	for (i = 0; i < ioc->sas_hba.num_phys; i++) {
1963 		if (phy->number != i) {
1964 			sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1965 			    (ioc->sas_hba.phy[i].phy->minimum_linkrate +
1966 			    (ioc->sas_hba.phy[i].phy->maximum_linkrate << 4));
1967 		} else {
1968 			sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1969 			    (rates->minimum_linkrate +
1970 			    (rates->maximum_linkrate << 4));
1971 		}
1972 	}
1973 
1974 	if (mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
1975 	    sz)) {
1976 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
1977 			__FILE__, __LINE__, __func__);
1978 		rc = -ENXIO;
1979 		goto out;
1980 	}
1981 
1982 	/* link reset */
1983 	_transport_phy_reset(phy, 0);
1984 
1985 	/* read phy page 0, then update the rates in the sas transport phy */
1986 	if (!mpt3sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
1987 	    phy->number)) {
1988 		phy->minimum_linkrate = _transport_convert_phy_link_rate(
1989 		    phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1990 		phy->maximum_linkrate = _transport_convert_phy_link_rate(
1991 		    phy_pg0.ProgrammedLinkRate >> 4);
1992 		phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1993 		    phy_pg0.NegotiatedLinkRate &
1994 		    MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1995 	}
1996 
1997  out:
1998 	kfree(sas_iounit_pg1);
1999 	return rc;
2000 }
2001 
2002 static int
_transport_map_smp_buffer(struct device * dev,struct bsg_buffer * buf,dma_addr_t * dma_addr,size_t * dma_len,void ** p)2003 _transport_map_smp_buffer(struct device *dev, struct bsg_buffer *buf,
2004 		dma_addr_t *dma_addr, size_t *dma_len, void **p)
2005 {
2006 	/* Check if the request is split across multiple segments */
2007 	if (buf->sg_cnt > 1) {
2008 		*p = dma_alloc_coherent(dev, buf->payload_len, dma_addr,
2009 				GFP_KERNEL);
2010 		if (!*p)
2011 			return -ENOMEM;
2012 		*dma_len = buf->payload_len;
2013 	} else {
2014 		if (!dma_map_sg(dev, buf->sg_list, 1, DMA_BIDIRECTIONAL))
2015 			return -ENOMEM;
2016 		*dma_addr = sg_dma_address(buf->sg_list);
2017 		*dma_len = sg_dma_len(buf->sg_list);
2018 		*p = NULL;
2019 	}
2020 
2021 	return 0;
2022 }
2023 
2024 static void
_transport_unmap_smp_buffer(struct device * dev,struct bsg_buffer * buf,dma_addr_t dma_addr,void * p)2025 _transport_unmap_smp_buffer(struct device *dev, struct bsg_buffer *buf,
2026 		dma_addr_t dma_addr, void *p)
2027 {
2028 	if (p)
2029 		dma_free_coherent(dev, buf->payload_len, p, dma_addr);
2030 	else
2031 		dma_unmap_sg(dev, buf->sg_list, 1, DMA_BIDIRECTIONAL);
2032 }
2033 
2034 /**
2035  * _transport_smp_handler - transport portal for smp passthru
2036  * @job: ?
2037  * @shost: shost object
2038  * @rphy: sas transport rphy object
2039  *
2040  * This used primarily for smp_utils.
2041  * Example:
2042  *           smp_rep_general /sys/class/bsg/expander-5:0
2043  */
2044 static void
_transport_smp_handler(struct bsg_job * job,struct Scsi_Host * shost,struct sas_rphy * rphy)2045 _transport_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
2046 		struct sas_rphy *rphy)
2047 {
2048 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2049 	Mpi2SmpPassthroughRequest_t *mpi_request;
2050 	Mpi2SmpPassthroughReply_t *mpi_reply;
2051 	int rc;
2052 	u16 smid;
2053 	void *psge;
2054 	dma_addr_t dma_addr_in;
2055 	dma_addr_t dma_addr_out;
2056 	void *addr_in = NULL;
2057 	void *addr_out = NULL;
2058 	size_t dma_len_in;
2059 	size_t dma_len_out;
2060 	unsigned int reslen = 0;
2061 
2062 	if (ioc->shost_recovery || ioc->pci_error_recovery) {
2063 		ioc_info(ioc, "%s: host reset in progress!\n", __func__);
2064 		rc = -EFAULT;
2065 		goto job_done;
2066 	}
2067 
2068 	rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
2069 	if (rc)
2070 		goto job_done;
2071 
2072 	if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
2073 		ioc_err(ioc, "%s: transport_cmds in use\n",
2074 			__func__);
2075 		rc = -EAGAIN;
2076 		goto out;
2077 	}
2078 	ioc->transport_cmds.status = MPT3_CMD_PENDING;
2079 
2080 	rc = _transport_map_smp_buffer(&ioc->pdev->dev, &job->request_payload,
2081 			&dma_addr_out, &dma_len_out, &addr_out);
2082 	if (rc)
2083 		goto out;
2084 	if (addr_out) {
2085 		sg_copy_to_buffer(job->request_payload.sg_list,
2086 				job->request_payload.sg_cnt, addr_out,
2087 				job->request_payload.payload_len);
2088 	}
2089 
2090 	rc = _transport_map_smp_buffer(&ioc->pdev->dev, &job->reply_payload,
2091 			&dma_addr_in, &dma_len_in, &addr_in);
2092 	if (rc)
2093 		goto unmap_out;
2094 
2095 	rc = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT);
2096 	if (rc)
2097 		goto unmap_in;
2098 
2099 	smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
2100 	if (!smid) {
2101 		ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
2102 		rc = -EAGAIN;
2103 		goto unmap_in;
2104 	}
2105 
2106 	rc = 0;
2107 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
2108 	ioc->transport_cmds.smid = smid;
2109 
2110 	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
2111 	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
2112 	mpi_request->PhysicalPort = _transport_get_port_id_by_rphy(ioc, rphy);
2113 	mpi_request->SASAddress = (rphy) ?
2114 	    cpu_to_le64(rphy->identify.sas_address) :
2115 	    cpu_to_le64(ioc->sas_hba.sas_address);
2116 	mpi_request->RequestDataLength = cpu_to_le16(dma_len_out - 4);
2117 	psge = &mpi_request->SGL;
2118 
2119 	ioc->build_sg(ioc, psge, dma_addr_out, dma_len_out - 4, dma_addr_in,
2120 			dma_len_in - 4);
2121 
2122 	dtransportprintk(ioc,
2123 			 ioc_info(ioc, "%s: sending smp request\n", __func__));
2124 
2125 	init_completion(&ioc->transport_cmds.done);
2126 	ioc->put_smid_default(ioc, smid);
2127 	wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ);
2128 
2129 	if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
2130 		ioc_err(ioc, "%s: timeout\n", __func__);
2131 		_debug_dump_mf(mpi_request,
2132 		    sizeof(Mpi2SmpPassthroughRequest_t)/4);
2133 		if (!(ioc->transport_cmds.status & MPT3_CMD_RESET)) {
2134 			mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2135 			rc = -ETIMEDOUT;
2136 			goto unmap_in;
2137 		}
2138 	}
2139 
2140 	dtransportprintk(ioc, ioc_info(ioc, "%s - complete\n", __func__));
2141 
2142 	if (!(ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID)) {
2143 		dtransportprintk(ioc,
2144 				 ioc_info(ioc, "%s: no reply\n", __func__));
2145 		rc = -ENXIO;
2146 		goto unmap_in;
2147 	}
2148 
2149 	mpi_reply = ioc->transport_cmds.reply;
2150 
2151 	dtransportprintk(ioc,
2152 			 ioc_info(ioc, "%s: reply data transfer size(%d)\n",
2153 				  __func__,
2154 				  le16_to_cpu(mpi_reply->ResponseDataLength)));
2155 
2156 	memcpy(job->reply, mpi_reply, sizeof(*mpi_reply));
2157 	job->reply_len = sizeof(*mpi_reply);
2158 	reslen = le16_to_cpu(mpi_reply->ResponseDataLength);
2159 
2160 	if (addr_in) {
2161 		sg_copy_to_buffer(job->reply_payload.sg_list,
2162 				job->reply_payload.sg_cnt, addr_in,
2163 				job->reply_payload.payload_len);
2164 	}
2165 
2166 	rc = 0;
2167  unmap_in:
2168 	_transport_unmap_smp_buffer(&ioc->pdev->dev, &job->reply_payload,
2169 			dma_addr_in, addr_in);
2170  unmap_out:
2171 	_transport_unmap_smp_buffer(&ioc->pdev->dev, &job->request_payload,
2172 			dma_addr_out, addr_out);
2173  out:
2174 	ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
2175 	mutex_unlock(&ioc->transport_cmds.mutex);
2176 job_done:
2177 	bsg_job_done(job, rc, reslen);
2178 }
2179 
2180 struct sas_function_template mpt3sas_transport_functions = {
2181 	.get_linkerrors		= _transport_get_linkerrors,
2182 	.get_enclosure_identifier = _transport_get_enclosure_identifier,
2183 	.get_bay_identifier	= _transport_get_bay_identifier,
2184 	.phy_reset		= _transport_phy_reset,
2185 	.phy_enable		= _transport_phy_enable,
2186 	.set_phy_speed		= _transport_phy_speed,
2187 	.smp_handler		= _transport_smp_handler,
2188 };
2189 
2190 struct scsi_transport_template *mpt3sas_transport_template;
2191