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compat: return -EFAULT on error in waitid()
[linux/fpc-iii.git] / drivers / scsi / mpt2sas / mpt2sas_transport.c
blob8c2ffbe6af0f1dbd67e724507101eabe5e0ceca6
1 /*
2 * SAS Transport Layer for MPT (Message Passing Technology) based controllers
3 *
4 * This code is based on drivers/scsi/mpt2sas/mpt2_transport.c
5 * Copyright (C) 2007-2012 LSI Corporation
6 * (mailto:DL-MPTFusionLinux@lsi.com)
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2
11 * of the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * NO WARRANTY
19 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
20 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
21 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
22 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
23 * solely responsible for determining the appropriateness of using and
24 * distributing the Program and assumes all risks associated with its
25 * exercise of rights under this Agreement, including but not limited to
26 * the risks and costs of program errors, damage to or loss of data,
27 * programs or equipment, and unavailability or interruption of operations.
28
29 * DISCLAIMER OF LIABILITY
30 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
31 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
33 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
34 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
35 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
36 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
37
38 * You should have received a copy of the GNU General Public License
39 * along with this program; if not, write to the Free Software
40 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
41 * USA.
42 */
43
44 #include <linux/module.h>
45 #include <linux/kernel.h>
46 #include <linux/init.h>
47 #include <linux/errno.h>
48 #include <linux/sched.h>
49 #include <linux/workqueue.h>
50 #include <linux/delay.h>
51 #include <linux/pci.h>
52 #include <linux/slab.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 "mpt2sas_base.h"
62 /**
63 * _transport_sas_node_find_by_sas_address - sas node search
64 * @ioc: per adapter object
65 * @sas_address: sas address of expander or sas host
66 * Context: Calling function should acquire ioc->sas_node_lock.
67 *
68 * Search for either hba phys or expander device based on handle, then returns
69 * the sas_node object.
70 */
71 static struct _sas_node *
72 _transport_sas_node_find_by_sas_address(struct MPT2SAS_ADAPTER *ioc,
73 u64 sas_address)
74 {
75 if (ioc->sas_hba.sas_address == sas_address)
76 return &ioc->sas_hba;
77 else
78 return mpt2sas_scsih_expander_find_by_sas_address(ioc,
79 sas_address);
80 }
81
82 /**
83 * _transport_convert_phy_link_rate -
84 * @link_rate: link rate returned from mpt firmware
85 *
86 * Convert link_rate from mpi fusion into sas_transport form.
87 */
88 static enum sas_linkrate
89 _transport_convert_phy_link_rate(u8 link_rate)
90 {
91 enum sas_linkrate rc;
92
93 switch (link_rate) {
94 case MPI2_SAS_NEG_LINK_RATE_1_5:
95 rc = SAS_LINK_RATE_1_5_GBPS;
96 break;
97 case MPI2_SAS_NEG_LINK_RATE_3_0:
98 rc = SAS_LINK_RATE_3_0_GBPS;
99 break;
100 case MPI2_SAS_NEG_LINK_RATE_6_0:
101 rc = SAS_LINK_RATE_6_0_GBPS;
102 break;
103 case MPI2_SAS_NEG_LINK_RATE_PHY_DISABLED:
104 rc = SAS_PHY_DISABLED;
105 break;
106 case MPI2_SAS_NEG_LINK_RATE_NEGOTIATION_FAILED:
107 rc = SAS_LINK_RATE_FAILED;
108 break;
109 case MPI2_SAS_NEG_LINK_RATE_PORT_SELECTOR:
110 rc = SAS_SATA_PORT_SELECTOR;
111 break;
112 case MPI2_SAS_NEG_LINK_RATE_SMP_RESET_IN_PROGRESS:
113 rc = SAS_PHY_RESET_IN_PROGRESS;
114 break;
115 default:
116 case MPI2_SAS_NEG_LINK_RATE_SATA_OOB_COMPLETE:
117 case MPI2_SAS_NEG_LINK_RATE_UNKNOWN_LINK_RATE:
118 rc = SAS_LINK_RATE_UNKNOWN;
119 break;
120 }
121 return rc;
122 }
123
124 /**
125 * _transport_set_identify - set identify for phys and end devices
126 * @ioc: per adapter object
127 * @handle: device handle
128 * @identify: sas identify info
129 *
130 * Populates sas identify info.
131 *
132 * Returns 0 for success, non-zero for failure.
133 */
134 static int
135 _transport_set_identify(struct MPT2SAS_ADAPTER *ioc, u16 handle,
136 struct sas_identify *identify)
137 {
138 Mpi2SasDevicePage0_t sas_device_pg0;
139 Mpi2ConfigReply_t mpi_reply;
140 u32 device_info;
141 u32 ioc_status;
142
143 if (ioc->shost_recovery || ioc->pci_error_recovery) {
144 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
145 __func__, ioc->name);
146 return -EFAULT;
147 }
148
149 if ((mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
150 MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
151 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
152
153 ioc->name, __FILE__, __LINE__, __func__);
154 return -ENXIO;
155 }
156
157 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
158 MPI2_IOCSTATUS_MASK;
159 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
160 printk(MPT2SAS_ERR_FMT "handle(0x%04x), ioc_status(0x%04x)"
161 "\nfailure at %s:%d/%s()!\n", ioc->name, handle, ioc_status,
162 __FILE__, __LINE__, __func__);
163 return -EIO;
164 }
165
166 memset(identify, 0, sizeof(struct sas_identify));
167 device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
168
169 /* sas_address */
170 identify->sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
171
172 /* phy number of the parent device this device is linked to */
173 identify->phy_identifier = sas_device_pg0.PhyNum;
174
175 /* device_type */
176 switch (device_info & MPI2_SAS_DEVICE_INFO_MASK_DEVICE_TYPE) {
177 case MPI2_SAS_DEVICE_INFO_NO_DEVICE:
178 identify->device_type = SAS_PHY_UNUSED;
179 break;
180 case MPI2_SAS_DEVICE_INFO_END_DEVICE:
181 identify->device_type = SAS_END_DEVICE;
182 break;
183 case MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER:
184 identify->device_type = SAS_EDGE_EXPANDER_DEVICE;
185 break;
186 case MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER:
187 identify->device_type = SAS_FANOUT_EXPANDER_DEVICE;
188 break;
189 }
190
191 /* initiator_port_protocols */
192 if (device_info & MPI2_SAS_DEVICE_INFO_SSP_INITIATOR)
193 identify->initiator_port_protocols |= SAS_PROTOCOL_SSP;
194 if (device_info & MPI2_SAS_DEVICE_INFO_STP_INITIATOR)
195 identify->initiator_port_protocols |= SAS_PROTOCOL_STP;
196 if (device_info & MPI2_SAS_DEVICE_INFO_SMP_INITIATOR)
197 identify->initiator_port_protocols |= SAS_PROTOCOL_SMP;
198 if (device_info & MPI2_SAS_DEVICE_INFO_SATA_HOST)
199 identify->initiator_port_protocols |= SAS_PROTOCOL_SATA;
200
201 /* target_port_protocols */
202 if (device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET)
203 identify->target_port_protocols |= SAS_PROTOCOL_SSP;
204 if (device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET)
205 identify->target_port_protocols |= SAS_PROTOCOL_STP;
206 if (device_info & MPI2_SAS_DEVICE_INFO_SMP_TARGET)
207 identify->target_port_protocols |= SAS_PROTOCOL_SMP;
208 if (device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
209 identify->target_port_protocols |= SAS_PROTOCOL_SATA;
210
211 return 0;
212 }
213
214 /**
215 * mpt2sas_transport_done - internal transport layer callback handler.
216 * @ioc: per adapter object
217 * @smid: system request message index
218 * @msix_index: MSIX table index supplied by the OS
219 * @reply: reply message frame(lower 32bit addr)
220 *
221 * Callback handler when sending internal generated transport cmds.
222 * The callback index passed is `ioc->transport_cb_idx`
223 *
224 * Return 1 meaning mf should be freed from _base_interrupt
225 * 0 means the mf is freed from this function.
226 */
227 u8
228 mpt2sas_transport_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
229 u32 reply)
230 {
231 MPI2DefaultReply_t *mpi_reply;
232
233 mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
234 if (ioc->transport_cmds.status == MPT2_CMD_NOT_USED)
235 return 1;
236 if (ioc->transport_cmds.smid != smid)
237 return 1;
238 ioc->transport_cmds.status |= MPT2_CMD_COMPLETE;
239 if (mpi_reply) {
240 memcpy(ioc->transport_cmds.reply, mpi_reply,
241 mpi_reply->MsgLength*4);
242 ioc->transport_cmds.status |= MPT2_CMD_REPLY_VALID;
243 }
244 ioc->transport_cmds.status &= ~MPT2_CMD_PENDING;
245 complete(&ioc->transport_cmds.done);
246 return 1;
247 }
248
249 /* report manufacture request structure */
250 struct rep_manu_request{
251 u8 smp_frame_type;
252 u8 function;
253 u8 reserved;
254 u8 request_length;
255 };
256
257 /* report manufacture reply structure */
258 struct rep_manu_reply{
259 u8 smp_frame_type; /* 0x41 */
260 u8 function; /* 0x01 */
261 u8 function_result;
262 u8 response_length;
263 u16 expander_change_count;
264 u8 reserved0[2];
265 u8 sas_format;
266 u8 reserved2[3];
267 u8 vendor_id[SAS_EXPANDER_VENDOR_ID_LEN];
268 u8 product_id[SAS_EXPANDER_PRODUCT_ID_LEN];
269 u8 product_rev[SAS_EXPANDER_PRODUCT_REV_LEN];
270 u8 component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN];
271 u16 component_id;
272 u8 component_revision_id;
273 u8 reserved3;
274 u8 vendor_specific[8];
275 };
276
277 /**
278 * _transport_expander_report_manufacture - obtain SMP report_manufacture
279 * @ioc: per adapter object
280 * @sas_address: expander sas address
281 * @edev: the sas_expander_device object
282 *
283 * Fills in the sas_expander_device object when SMP port is created.
284 *
285 * Returns 0 for success, non-zero for failure.
286 */
287 static int
288 _transport_expander_report_manufacture(struct MPT2SAS_ADAPTER *ioc,
289 u64 sas_address, struct sas_expander_device *edev)
290 {
291 Mpi2SmpPassthroughRequest_t *mpi_request;
292 Mpi2SmpPassthroughReply_t *mpi_reply;
293 struct rep_manu_reply *manufacture_reply;
294 struct rep_manu_request *manufacture_request;
295 int rc;
296 u16 smid;
297 u32 ioc_state;
298 unsigned long timeleft;
299 void *psge;
300 u32 sgl_flags;
301 u8 issue_reset = 0;
302 void *data_out = NULL;
303 dma_addr_t data_out_dma;
304 u32 sz;
305 u16 wait_state_count;
306
307 if (ioc->shost_recovery || ioc->pci_error_recovery) {
308 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
309 __func__, ioc->name);
310 return -EFAULT;
311 }
312
313 mutex_lock(&ioc->transport_cmds.mutex);
314
315 if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
316 printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n",
317 ioc->name, __func__);
318 rc = -EAGAIN;
319 goto out;
320 }
321 ioc->transport_cmds.status = MPT2_CMD_PENDING;
322
323 wait_state_count = 0;
324 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
325 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
326 if (wait_state_count++ == 10) {
327 printk(MPT2SAS_ERR_FMT
328 "%s: failed due to ioc not operational\n",
329 ioc->name, __func__);
330 rc = -EFAULT;
331 goto out;
332 }
333 ssleep(1);
334 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
335 printk(MPT2SAS_INFO_FMT "%s: waiting for "
336 "operational state(count=%d)\n", ioc->name,
337 __func__, wait_state_count);
338 }
339 if (wait_state_count)
340 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
341 ioc->name, __func__);
342
343 smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
344 if (!smid) {
345 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
346 ioc->name, __func__);
347 rc = -EAGAIN;
348 goto out;
349 }
350
351 rc = 0;
352 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
353 ioc->transport_cmds.smid = smid;
354
355 sz = sizeof(struct rep_manu_request) + sizeof(struct rep_manu_reply);
356 data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
357
358 if (!data_out) {
359 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
360 __LINE__, __func__);
361 rc = -ENOMEM;
362 mpt2sas_base_free_smid(ioc, smid);
363 goto out;
364 }
365
366 manufacture_request = data_out;
367 manufacture_request->smp_frame_type = 0x40;
368 manufacture_request->function = 1;
369 manufacture_request->reserved = 0;
370 manufacture_request->request_length = 0;
371
372 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
373 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
374 mpi_request->PhysicalPort = 0xFF;
375 mpi_request->VF_ID = 0; /* TODO */
376 mpi_request->VP_ID = 0;
377 mpi_request->SASAddress = cpu_to_le64(sas_address);
378 mpi_request->RequestDataLength =
379 cpu_to_le16(sizeof(struct rep_manu_request));
380 psge = &mpi_request->SGL;
381
382 /* WRITE sgel first */
383 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
384 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
385 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
386 ioc->base_add_sg_single(psge, sgl_flags |
387 sizeof(struct rep_manu_request), data_out_dma);
388
389 /* incr sgel */
390 psge += ioc->sge_size;
391
392 /* READ sgel last */
393 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
394 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
395 MPI2_SGE_FLAGS_END_OF_LIST);
396 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
397 ioc->base_add_sg_single(psge, sgl_flags |
398 sizeof(struct rep_manu_reply), data_out_dma +
399 sizeof(struct rep_manu_request));
400
401 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "report_manufacture - "
402 "send to sas_addr(0x%016llx)\n", ioc->name,
403 (unsigned long long)sas_address));
404 init_completion(&ioc->transport_cmds.done);
405 mpt2sas_base_put_smid_default(ioc, smid);
406 timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
407 10*HZ);
408
409 if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
410 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
411 ioc->name, __func__);
412 _debug_dump_mf(mpi_request,
413 sizeof(Mpi2SmpPassthroughRequest_t)/4);
414 if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
415 issue_reset = 1;
416 goto issue_host_reset;
417 }
418
419 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "report_manufacture - "
420 "complete\n", ioc->name));
421
422 if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
423 u8 *tmp;
424
425 mpi_reply = ioc->transport_cmds.reply;
426
427 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
428 "report_manufacture - reply data transfer size(%d)\n",
429 ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
430
431 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
432 sizeof(struct rep_manu_reply))
433 goto out;
434
435 manufacture_reply = data_out + sizeof(struct rep_manu_request);
436 strncpy(edev->vendor_id, manufacture_reply->vendor_id,
437 SAS_EXPANDER_VENDOR_ID_LEN);
438 strncpy(edev->product_id, manufacture_reply->product_id,
439 SAS_EXPANDER_PRODUCT_ID_LEN);
440 strncpy(edev->product_rev, manufacture_reply->product_rev,
441 SAS_EXPANDER_PRODUCT_REV_LEN);
442 edev->level = manufacture_reply->sas_format & 1;
443 if (edev->level) {
444 strncpy(edev->component_vendor_id,
445 manufacture_reply->component_vendor_id,
446 SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN);
447 tmp = (u8 *)&manufacture_reply->component_id;
448 edev->component_id = tmp[0] << 8 | tmp[1];
449 edev->component_revision_id =
450 manufacture_reply->component_revision_id;
451 }
452 } else
453 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
454 "report_manufacture - no reply\n", ioc->name));
455
456 issue_host_reset:
457 if (issue_reset)
458 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
459 FORCE_BIG_HAMMER);
460 out:
461 ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
462 if (data_out)
463 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
464
465 mutex_unlock(&ioc->transport_cmds.mutex);
466 return rc;
467 }
468
469 /**
470 * _transport_delete_port - helper function to removing a port
471 * @ioc: per adapter object
472 * @mpt2sas_port: mpt2sas per port object
473 *
474 * Returns nothing.
475 */
476 static void
477 _transport_delete_port(struct MPT2SAS_ADAPTER *ioc,
478 struct _sas_port *mpt2sas_port)
479 {
480 u64 sas_address = mpt2sas_port->remote_identify.sas_address;
481 enum sas_device_type device_type =
482 mpt2sas_port->remote_identify.device_type;
483
484 dev_printk(KERN_INFO, &mpt2sas_port->port->dev,
485 "remove: sas_addr(0x%016llx)\n",
486 (unsigned long long) sas_address);
487
488 ioc->logging_level |= MPT_DEBUG_TRANSPORT;
489 if (device_type == SAS_END_DEVICE)
490 mpt2sas_device_remove_by_sas_address(ioc, sas_address);
491 else if (device_type == SAS_EDGE_EXPANDER_DEVICE ||
492 device_type == SAS_FANOUT_EXPANDER_DEVICE)
493 mpt2sas_expander_remove(ioc, sas_address);
494 ioc->logging_level &= ~MPT_DEBUG_TRANSPORT;
495 }
496
497 /**
498 * _transport_delete_phy - helper function to removing single phy from port
499 * @ioc: per adapter object
500 * @mpt2sas_port: mpt2sas per port object
501 * @mpt2sas_phy: mpt2sas per phy object
502 *
503 * Returns nothing.
504 */
505 static void
506 _transport_delete_phy(struct MPT2SAS_ADAPTER *ioc,
507 struct _sas_port *mpt2sas_port, struct _sas_phy *mpt2sas_phy)
508 {
509 u64 sas_address = mpt2sas_port->remote_identify.sas_address;
510
511 dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
512 "remove: sas_addr(0x%016llx), phy(%d)\n",
513 (unsigned long long) sas_address, mpt2sas_phy->phy_id);
514
515 list_del(&mpt2sas_phy->port_siblings);
516 mpt2sas_port->num_phys--;
517 sas_port_delete_phy(mpt2sas_port->port, mpt2sas_phy->phy);
518 mpt2sas_phy->phy_belongs_to_port = 0;
519 }
520
521 /**
522 * _transport_add_phy - helper function to adding single phy to port
523 * @ioc: per adapter object
524 * @mpt2sas_port: mpt2sas per port object
525 * @mpt2sas_phy: mpt2sas per phy object
526 *
527 * Returns nothing.
528 */
529 static void
530 _transport_add_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_port *mpt2sas_port,
531 struct _sas_phy *mpt2sas_phy)
532 {
533 u64 sas_address = mpt2sas_port->remote_identify.sas_address;
534
535 dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
536 "add: sas_addr(0x%016llx), phy(%d)\n", (unsigned long long)
537 sas_address, mpt2sas_phy->phy_id);
538
539 list_add_tail(&mpt2sas_phy->port_siblings, &mpt2sas_port->phy_list);
540 mpt2sas_port->num_phys++;
541 sas_port_add_phy(mpt2sas_port->port, mpt2sas_phy->phy);
542 mpt2sas_phy->phy_belongs_to_port = 1;
543 }
544
545 /**
546 * _transport_add_phy_to_an_existing_port - adding new phy to existing port
547 * @ioc: per adapter object
548 * @sas_node: sas node object (either expander or sas host)
549 * @mpt2sas_phy: mpt2sas per phy object
550 * @sas_address: sas address of device/expander were phy needs to be added to
551 *
552 * Returns nothing.
553 */
554 static void
555 _transport_add_phy_to_an_existing_port(struct MPT2SAS_ADAPTER *ioc,
556 struct _sas_node *sas_node, struct _sas_phy *mpt2sas_phy, u64 sas_address)
557 {
558 struct _sas_port *mpt2sas_port;
559 struct _sas_phy *phy_srch;
560
561 if (mpt2sas_phy->phy_belongs_to_port == 1)
562 return;
563
564 list_for_each_entry(mpt2sas_port, &sas_node->sas_port_list,
565 port_list) {
566 if (mpt2sas_port->remote_identify.sas_address !=
567 sas_address)
568 continue;
569 list_for_each_entry(phy_srch, &mpt2sas_port->phy_list,
570 port_siblings) {
571 if (phy_srch == mpt2sas_phy)
572 return;
573 }
574 _transport_add_phy(ioc, mpt2sas_port, mpt2sas_phy);
575 return;
576 }
577
578 }
579
580 /**
581 * _transport_del_phy_from_an_existing_port - delete phy from existing port
582 * @ioc: per adapter object
583 * @sas_node: sas node object (either expander or sas host)
584 * @mpt2sas_phy: mpt2sas per phy object
585 *
586 * Returns nothing.
587 */
588 static void
589 _transport_del_phy_from_an_existing_port(struct MPT2SAS_ADAPTER *ioc,
590 struct _sas_node *sas_node, struct _sas_phy *mpt2sas_phy)
591 {
592 struct _sas_port *mpt2sas_port, *next;
593 struct _sas_phy *phy_srch;
594
595 if (mpt2sas_phy->phy_belongs_to_port == 0)
596 return;
597
598 list_for_each_entry_safe(mpt2sas_port, next, &sas_node->sas_port_list,
599 port_list) {
600 list_for_each_entry(phy_srch, &mpt2sas_port->phy_list,
601 port_siblings) {
602 if (phy_srch != mpt2sas_phy)
603 continue;
604 if (mpt2sas_port->num_phys == 1)
605 _transport_delete_port(ioc, mpt2sas_port);
606 else
607 _transport_delete_phy(ioc, mpt2sas_port,
608 mpt2sas_phy);
609 return;
610 }
611 }
612 }
613
614 /**
615 * _transport_sanity_check - sanity check when adding a new port
616 * @ioc: per adapter object
617 * @sas_node: sas node object (either expander or sas host)
618 * @sas_address: sas address of device being added
619 *
620 * See the explanation above from _transport_delete_duplicate_port
621 */
622 static void
623 _transport_sanity_check(struct MPT2SAS_ADAPTER *ioc, struct _sas_node *sas_node,
624 u64 sas_address)
625 {
626 int i;
627
628 for (i = 0; i < sas_node->num_phys; i++) {
629 if (sas_node->phy[i].remote_identify.sas_address != sas_address)
630 continue;
631 if (sas_node->phy[i].phy_belongs_to_port == 1)
632 _transport_del_phy_from_an_existing_port(ioc, sas_node,
633 &sas_node->phy[i]);
634 }
635 }
636
637 /**
638 * mpt2sas_transport_port_add - insert port to the list
639 * @ioc: per adapter object
640 * @handle: handle of attached device
641 * @sas_address: sas address of parent expander or sas host
642 * Context: This function will acquire ioc->sas_node_lock.
643 *
644 * Adding new port object to the sas_node->sas_port_list.
645 *
646 * Returns mpt2sas_port.
647 */
648 struct _sas_port *
649 mpt2sas_transport_port_add(struct MPT2SAS_ADAPTER *ioc, u16 handle,
650 u64 sas_address)
651 {
652 struct _sas_phy *mpt2sas_phy, *next;
653 struct _sas_port *mpt2sas_port;
654 unsigned long flags;
655 struct _sas_node *sas_node;
656 struct sas_rphy *rphy;
657 int i;
658 struct sas_port *port;
659
660 mpt2sas_port = kzalloc(sizeof(struct _sas_port),
661 GFP_KERNEL);
662 if (!mpt2sas_port) {
663 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
664 ioc->name, __FILE__, __LINE__, __func__);
665 return NULL;
666 }
667
668 INIT_LIST_HEAD(&mpt2sas_port->port_list);
669 INIT_LIST_HEAD(&mpt2sas_port->phy_list);
670 spin_lock_irqsave(&ioc->sas_node_lock, flags);
671 sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
672 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
673
674 if (!sas_node) {
675 printk(MPT2SAS_ERR_FMT "%s: Could not find "
676 "parent sas_address(0x%016llx)!\n", ioc->name,
677 __func__, (unsigned long long)sas_address);
678 goto out_fail;
679 }
680
681 if ((_transport_set_identify(ioc, handle,
682 &mpt2sas_port->remote_identify))) {
683 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
684 ioc->name, __FILE__, __LINE__, __func__);
685 goto out_fail;
686 }
687
688 if (mpt2sas_port->remote_identify.device_type == SAS_PHY_UNUSED) {
689 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
690 ioc->name, __FILE__, __LINE__, __func__);
691 goto out_fail;
692 }
693
694 _transport_sanity_check(ioc, sas_node,
695 mpt2sas_port->remote_identify.sas_address);
696
697 for (i = 0; i < sas_node->num_phys; i++) {
698 if (sas_node->phy[i].remote_identify.sas_address !=
699 mpt2sas_port->remote_identify.sas_address)
700 continue;
701 list_add_tail(&sas_node->phy[i].port_siblings,
702 &mpt2sas_port->phy_list);
703 mpt2sas_port->num_phys++;
704 }
705
706 if (!mpt2sas_port->num_phys) {
707 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
708 ioc->name, __FILE__, __LINE__, __func__);
709 goto out_fail;
710 }
711
712 port = sas_port_alloc_num(sas_node->parent_dev);
713 if ((sas_port_add(port))) {
714 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
715 ioc->name, __FILE__, __LINE__, __func__);
716 goto out_fail;
717 }
718
719 list_for_each_entry(mpt2sas_phy, &mpt2sas_port->phy_list,
720 port_siblings) {
721 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
722 dev_printk(KERN_INFO, &port->dev, "add: handle(0x%04x)"
723 ", sas_addr(0x%016llx), phy(%d)\n", handle,
724 (unsigned long long)
725 mpt2sas_port->remote_identify.sas_address,
726 mpt2sas_phy->phy_id);
727 sas_port_add_phy(port, mpt2sas_phy->phy);
728 mpt2sas_phy->phy_belongs_to_port = 1;
729 }
730
731 mpt2sas_port->port = port;
732 if (mpt2sas_port->remote_identify.device_type == SAS_END_DEVICE)
733 rphy = sas_end_device_alloc(port);
734 else
735 rphy = sas_expander_alloc(port,
736 mpt2sas_port->remote_identify.device_type);
737
738 rphy->identify = mpt2sas_port->remote_identify;
739 if ((sas_rphy_add(rphy))) {
740 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
741 ioc->name, __FILE__, __LINE__, __func__);
742 }
743 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
744 dev_printk(KERN_INFO, &rphy->dev, "add: handle(0x%04x), "
745 "sas_addr(0x%016llx)\n", handle,
746 (unsigned long long)
747 mpt2sas_port->remote_identify.sas_address);
748 mpt2sas_port->rphy = rphy;
749 spin_lock_irqsave(&ioc->sas_node_lock, flags);
750 list_add_tail(&mpt2sas_port->port_list, &sas_node->sas_port_list);
751 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
752
753 /* fill in report manufacture */
754 if (mpt2sas_port->remote_identify.device_type ==
755 MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
756 mpt2sas_port->remote_identify.device_type ==
757 MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
758 _transport_expander_report_manufacture(ioc,
759 mpt2sas_port->remote_identify.sas_address,
760 rphy_to_expander_device(rphy));
761
762 return mpt2sas_port;
763
764 out_fail:
765 list_for_each_entry_safe(mpt2sas_phy, next, &mpt2sas_port->phy_list,
766 port_siblings)
767 list_del(&mpt2sas_phy->port_siblings);
768 kfree(mpt2sas_port);
769 return NULL;
770 }
771
772 /**
773 * mpt2sas_transport_port_remove - remove port from the list
774 * @ioc: per adapter object
775 * @sas_address: sas address of attached device
776 * @sas_address_parent: sas address of parent expander or sas host
777 * Context: This function will acquire ioc->sas_node_lock.
778 *
779 * Removing object and freeing associated memory from the
780 * ioc->sas_port_list.
781 *
782 * Return nothing.
783 */
784 void
785 mpt2sas_transport_port_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address,
786 u64 sas_address_parent)
787 {
788 int i;
789 unsigned long flags;
790 struct _sas_port *mpt2sas_port, *next;
791 struct _sas_node *sas_node;
792 u8 found = 0;
793 struct _sas_phy *mpt2sas_phy, *next_phy;
794
795 spin_lock_irqsave(&ioc->sas_node_lock, flags);
796 sas_node = _transport_sas_node_find_by_sas_address(ioc,
797 sas_address_parent);
798 if (!sas_node) {
799 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
800 return;
801 }
802 list_for_each_entry_safe(mpt2sas_port, next, &sas_node->sas_port_list,
803 port_list) {
804 if (mpt2sas_port->remote_identify.sas_address != sas_address)
805 continue;
806 found = 1;
807 list_del(&mpt2sas_port->port_list);
808 goto out;
809 }
810 out:
811 if (!found) {
812 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
813 return;
814 }
815
816 for (i = 0; i < sas_node->num_phys; i++) {
817 if (sas_node->phy[i].remote_identify.sas_address == sas_address)
818 memset(&sas_node->phy[i].remote_identify, 0 ,
819 sizeof(struct sas_identify));
820 }
821
822 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
823 list_for_each_entry_safe(mpt2sas_phy, next_phy,
824 &mpt2sas_port->phy_list, port_siblings) {
825 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
826 dev_printk(KERN_INFO, &mpt2sas_port->port->dev,
827 "remove: sas_addr(0x%016llx), phy(%d)\n",
828 (unsigned long long)
829 mpt2sas_port->remote_identify.sas_address,
830 mpt2sas_phy->phy_id);
831 mpt2sas_phy->phy_belongs_to_port = 0;
832 sas_port_delete_phy(mpt2sas_port->port, mpt2sas_phy->phy);
833 list_del(&mpt2sas_phy->port_siblings);
834 }
835 sas_port_delete(mpt2sas_port->port);
836 kfree(mpt2sas_port);
837 }
838
839 /**
840 * mpt2sas_transport_add_host_phy - report sas_host phy to transport
841 * @ioc: per adapter object
842 * @mpt2sas_phy: mpt2sas per phy object
843 * @phy_pg0: sas phy page 0
844 * @parent_dev: parent device class object
845 *
846 * Returns 0 for success, non-zero for failure.
847 */
848 int
849 mpt2sas_transport_add_host_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
850 *mpt2sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
851 {
852 struct sas_phy *phy;
853 int phy_index = mpt2sas_phy->phy_id;
854
855
856 INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
857 phy = sas_phy_alloc(parent_dev, phy_index);
858 if (!phy) {
859 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
860 ioc->name, __FILE__, __LINE__, __func__);
861 return -1;
862 }
863 if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
864 &mpt2sas_phy->identify))) {
865 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
866 ioc->name, __FILE__, __LINE__, __func__);
867 return -1;
868 }
869 phy->identify = mpt2sas_phy->identify;
870 mpt2sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
871 if (mpt2sas_phy->attached_handle)
872 _transport_set_identify(ioc, mpt2sas_phy->attached_handle,
873 &mpt2sas_phy->remote_identify);
874 phy->identify.phy_identifier = mpt2sas_phy->phy_id;
875 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
876 phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
877 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
878 phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
879 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
880 phy_pg0.HwLinkRate >> 4);
881 phy->minimum_linkrate = _transport_convert_phy_link_rate(
882 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
883 phy->maximum_linkrate = _transport_convert_phy_link_rate(
884 phy_pg0.ProgrammedLinkRate >> 4);
885
886 if ((sas_phy_add(phy))) {
887 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
888 ioc->name, __FILE__, __LINE__, __func__);
889 sas_phy_free(phy);
890 return -1;
891 }
892 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
893 dev_printk(KERN_INFO, &phy->dev,
894 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
895 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
896 mpt2sas_phy->handle, (unsigned long long)
897 mpt2sas_phy->identify.sas_address,
898 mpt2sas_phy->attached_handle,
899 (unsigned long long)
900 mpt2sas_phy->remote_identify.sas_address);
901 mpt2sas_phy->phy = phy;
902 return 0;
903 }
904
905
906 /**
907 * mpt2sas_transport_add_expander_phy - report expander phy to transport
908 * @ioc: per adapter object
909 * @mpt2sas_phy: mpt2sas per phy object
910 * @expander_pg1: expander page 1
911 * @parent_dev: parent device class object
912 *
913 * Returns 0 for success, non-zero for failure.
914 */
915 int
916 mpt2sas_transport_add_expander_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
917 *mpt2sas_phy, Mpi2ExpanderPage1_t expander_pg1, struct device *parent_dev)
918 {
919 struct sas_phy *phy;
920 int phy_index = mpt2sas_phy->phy_id;
921
922 INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
923 phy = sas_phy_alloc(parent_dev, phy_index);
924 if (!phy) {
925 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
926 ioc->name, __FILE__, __LINE__, __func__);
927 return -1;
928 }
929 if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
930 &mpt2sas_phy->identify))) {
931 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
932 ioc->name, __FILE__, __LINE__, __func__);
933 return -1;
934 }
935 phy->identify = mpt2sas_phy->identify;
936 mpt2sas_phy->attached_handle =
937 le16_to_cpu(expander_pg1.AttachedDevHandle);
938 if (mpt2sas_phy->attached_handle)
939 _transport_set_identify(ioc, mpt2sas_phy->attached_handle,
940 &mpt2sas_phy->remote_identify);
941 phy->identify.phy_identifier = mpt2sas_phy->phy_id;
942 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
943 expander_pg1.NegotiatedLinkRate &
944 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
945 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
946 expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
947 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
948 expander_pg1.HwLinkRate >> 4);
949 phy->minimum_linkrate = _transport_convert_phy_link_rate(
950 expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
951 phy->maximum_linkrate = _transport_convert_phy_link_rate(
952 expander_pg1.ProgrammedLinkRate >> 4);
953
954 if ((sas_phy_add(phy))) {
955 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
956 ioc->name, __FILE__, __LINE__, __func__);
957 sas_phy_free(phy);
958 return -1;
959 }
960 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
961 dev_printk(KERN_INFO, &phy->dev,
962 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
963 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
964 mpt2sas_phy->handle, (unsigned long long)
965 mpt2sas_phy->identify.sas_address,
966 mpt2sas_phy->attached_handle,
967 (unsigned long long)
968 mpt2sas_phy->remote_identify.sas_address);
969 mpt2sas_phy->phy = phy;
970 return 0;
971 }
972
973 /**
974 * mpt2sas_transport_update_links - refreshing phy link changes
975 * @ioc: per adapter object
976 * @sas_address: sas address of parent expander or sas host
977 * @handle: attached device handle
978 * @phy_numberv: phy number
979 * @link_rate: new link rate
980 *
981 * Returns nothing.
982 */
983 void
984 mpt2sas_transport_update_links(struct MPT2SAS_ADAPTER *ioc,
985 u64 sas_address, u16 handle, u8 phy_number, u8 link_rate)
986 {
987 unsigned long flags;
988 struct _sas_node *sas_node;
989 struct _sas_phy *mpt2sas_phy;
990
991 if (ioc->shost_recovery || ioc->pci_error_recovery)
992 return;
993
994 spin_lock_irqsave(&ioc->sas_node_lock, flags);
995 sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
996 if (!sas_node) {
997 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
998 return;
999 }
1000
1001 mpt2sas_phy = &sas_node->phy[phy_number];
1002 mpt2sas_phy->attached_handle = handle;
1003 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1004 if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5)) {
1005 _transport_set_identify(ioc, handle,
1006 &mpt2sas_phy->remote_identify);
1007 _transport_add_phy_to_an_existing_port(ioc, sas_node,
1008 mpt2sas_phy, mpt2sas_phy->remote_identify.sas_address);
1009 } else
1010 memset(&mpt2sas_phy->remote_identify, 0 , sizeof(struct
1011 sas_identify));
1012
1013 if (mpt2sas_phy->phy)
1014 mpt2sas_phy->phy->negotiated_linkrate =
1015 _transport_convert_phy_link_rate(link_rate);
1016
1017 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1018 dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
1019 "refresh: parent sas_addr(0x%016llx),\n"
1020 "\tlink_rate(0x%02x), phy(%d)\n"
1021 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1022 (unsigned long long)sas_address,
1023 link_rate, phy_number, handle, (unsigned long long)
1024 mpt2sas_phy->remote_identify.sas_address);
1025 }
1026
1027 static inline void *
1028 phy_to_ioc(struct sas_phy *phy)
1029 {
1030 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1031 return shost_priv(shost);
1032 }
1033
1034 static inline void *
1035 rphy_to_ioc(struct sas_rphy *rphy)
1036 {
1037 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1038 return shost_priv(shost);
1039 }
1040
1041
1042 /* report phy error log structure */
1043 struct phy_error_log_request{
1044 u8 smp_frame_type; /* 0x40 */
1045 u8 function; /* 0x11 */
1046 u8 allocated_response_length;
1047 u8 request_length; /* 02 */
1048 u8 reserved_1[5];
1049 u8 phy_identifier;
1050 u8 reserved_2[2];
1051 };
1052
1053 /* report phy error log reply structure */
1054 struct phy_error_log_reply{
1055 u8 smp_frame_type; /* 0x41 */
1056 u8 function; /* 0x11 */
1057 u8 function_result;
1058 u8 response_length;
1059 __be16 expander_change_count;
1060 u8 reserved_1[3];
1061 u8 phy_identifier;
1062 u8 reserved_2[2];
1063 __be32 invalid_dword;
1064 __be32 running_disparity_error;
1065 __be32 loss_of_dword_sync;
1066 __be32 phy_reset_problem;
1067 };
1068
1069 /**
1070 * _transport_get_expander_phy_error_log - return expander counters
1071 * @ioc: per adapter object
1072 * @phy: The sas phy object
1073 *
1074 * Returns 0 for success, non-zero for failure.
1075 *
1076 */
1077 static int
1078 _transport_get_expander_phy_error_log(struct MPT2SAS_ADAPTER *ioc,
1079 struct sas_phy *phy)
1080 {
1081 Mpi2SmpPassthroughRequest_t *mpi_request;
1082 Mpi2SmpPassthroughReply_t *mpi_reply;
1083 struct phy_error_log_request *phy_error_log_request;
1084 struct phy_error_log_reply *phy_error_log_reply;
1085 int rc;
1086 u16 smid;
1087 u32 ioc_state;
1088 unsigned long timeleft;
1089 void *psge;
1090 u32 sgl_flags;
1091 u8 issue_reset = 0;
1092 void *data_out = NULL;
1093 dma_addr_t data_out_dma;
1094 u32 sz;
1095 u16 wait_state_count;
1096
1097 if (ioc->shost_recovery || ioc->pci_error_recovery) {
1098 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
1099 __func__, ioc->name);
1100 return -EFAULT;
1101 }
1102
1103 mutex_lock(&ioc->transport_cmds.mutex);
1104
1105 if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
1106 printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n",
1107 ioc->name, __func__);
1108 rc = -EAGAIN;
1109 goto out;
1110 }
1111 ioc->transport_cmds.status = MPT2_CMD_PENDING;
1112
1113 wait_state_count = 0;
1114 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1115 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1116 if (wait_state_count++ == 10) {
1117 printk(MPT2SAS_ERR_FMT
1118 "%s: failed due to ioc not operational\n",
1119 ioc->name, __func__);
1120 rc = -EFAULT;
1121 goto out;
1122 }
1123 ssleep(1);
1124 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1125 printk(MPT2SAS_INFO_FMT "%s: waiting for "
1126 "operational state(count=%d)\n", ioc->name,
1127 __func__, wait_state_count);
1128 }
1129 if (wait_state_count)
1130 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
1131 ioc->name, __func__);
1132
1133 smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
1134 if (!smid) {
1135 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1136 ioc->name, __func__);
1137 rc = -EAGAIN;
1138 goto out;
1139 }
1140
1141 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1142 ioc->transport_cmds.smid = smid;
1143
1144 sz = sizeof(struct phy_error_log_request) +
1145 sizeof(struct phy_error_log_reply);
1146 data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
1147 if (!data_out) {
1148 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
1149 __LINE__, __func__);
1150 rc = -ENOMEM;
1151 mpt2sas_base_free_smid(ioc, smid);
1152 goto out;
1153 }
1154
1155 rc = -EINVAL;
1156 memset(data_out, 0, sz);
1157 phy_error_log_request = data_out;
1158 phy_error_log_request->smp_frame_type = 0x40;
1159 phy_error_log_request->function = 0x11;
1160 phy_error_log_request->request_length = 2;
1161 phy_error_log_request->allocated_response_length = 0;
1162 phy_error_log_request->phy_identifier = phy->number;
1163
1164 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1165 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1166 mpi_request->PhysicalPort = 0xFF;
1167 mpi_request->VF_ID = 0; /* TODO */
1168 mpi_request->VP_ID = 0;
1169 mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1170 mpi_request->RequestDataLength =
1171 cpu_to_le16(sizeof(struct phy_error_log_request));
1172 psge = &mpi_request->SGL;
1173
1174 /* WRITE sgel first */
1175 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1176 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
1177 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1178 ioc->base_add_sg_single(psge, sgl_flags |
1179 sizeof(struct phy_error_log_request), data_out_dma);
1180
1181 /* incr sgel */
1182 psge += ioc->sge_size;
1183
1184 /* READ sgel last */
1185 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1186 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
1187 MPI2_SGE_FLAGS_END_OF_LIST);
1188 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1189 ioc->base_add_sg_single(psge, sgl_flags |
1190 sizeof(struct phy_error_log_reply), data_out_dma +
1191 sizeof(struct phy_error_log_request));
1192
1193 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "phy_error_log - "
1194 "send to sas_addr(0x%016llx), phy(%d)\n", ioc->name,
1195 (unsigned long long)phy->identify.sas_address, phy->number));
1196 init_completion(&ioc->transport_cmds.done);
1197 mpt2sas_base_put_smid_default(ioc, smid);
1198 timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
1199 10*HZ);
1200
1201 if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
1202 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
1203 ioc->name, __func__);
1204 _debug_dump_mf(mpi_request,
1205 sizeof(Mpi2SmpPassthroughRequest_t)/4);
1206 if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
1207 issue_reset = 1;
1208 goto issue_host_reset;
1209 }
1210
1211 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "phy_error_log - "
1212 "complete\n", ioc->name));
1213
1214 if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
1215
1216 mpi_reply = ioc->transport_cmds.reply;
1217
1218 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
1219 "phy_error_log - reply data transfer size(%d)\n",
1220 ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
1221
1222 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1223 sizeof(struct phy_error_log_reply))
1224 goto out;
1225
1226 phy_error_log_reply = data_out +
1227 sizeof(struct phy_error_log_request);
1228
1229 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
1230 "phy_error_log - function_result(%d)\n",
1231 ioc->name, phy_error_log_reply->function_result));
1232
1233 phy->invalid_dword_count =
1234 be32_to_cpu(phy_error_log_reply->invalid_dword);
1235 phy->running_disparity_error_count =
1236 be32_to_cpu(phy_error_log_reply->running_disparity_error);
1237 phy->loss_of_dword_sync_count =
1238 be32_to_cpu(phy_error_log_reply->loss_of_dword_sync);
1239 phy->phy_reset_problem_count =
1240 be32_to_cpu(phy_error_log_reply->phy_reset_problem);
1241 rc = 0;
1242 } else
1243 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
1244 "phy_error_log - no reply\n", ioc->name));
1245
1246 issue_host_reset:
1247 if (issue_reset)
1248 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1249 FORCE_BIG_HAMMER);
1250 out:
1251 ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
1252 if (data_out)
1253 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
1254
1255 mutex_unlock(&ioc->transport_cmds.mutex);
1256 return rc;
1257 }
1258
1259 /**
1260 * _transport_get_linkerrors - return phy counters for both hba and expanders
1261 * @phy: The sas phy object
1262 *
1263 * Returns 0 for success, non-zero for failure.
1264 *
1265 */
1266 static int
1267 _transport_get_linkerrors(struct sas_phy *phy)
1268 {
1269 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
1270 unsigned long flags;
1271 Mpi2ConfigReply_t mpi_reply;
1272 Mpi2SasPhyPage1_t phy_pg1;
1273
1274 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1275 if (_transport_sas_node_find_by_sas_address(ioc,
1276 phy->identify.sas_address) == NULL) {
1277 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1278 return -EINVAL;
1279 }
1280 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1281
1282 if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1283 return _transport_get_expander_phy_error_log(ioc, phy);
1284
1285 /* get hba phy error logs */
1286 if ((mpt2sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
1287 phy->number))) {
1288 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1289 ioc->name, __FILE__, __LINE__, __func__);
1290 return -ENXIO;
1291 }
1292
1293 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1294 printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
1295 "(0x%04x), loginfo(0x%08x)\n", ioc->name,
1296 phy->number, le16_to_cpu(mpi_reply.IOCStatus),
1297 le32_to_cpu(mpi_reply.IOCLogInfo));
1298
1299 phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
1300 phy->running_disparity_error_count =
1301 le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
1302 phy->loss_of_dword_sync_count =
1303 le32_to_cpu(phy_pg1.LossDwordSynchCount);
1304 phy->phy_reset_problem_count =
1305 le32_to_cpu(phy_pg1.PhyResetProblemCount);
1306 return 0;
1307 }
1308
1309 /**
1310 * _transport_get_enclosure_identifier -
1311 * @phy: The sas phy object
1312 *
1313 * Obtain the enclosure logical id for an expander.
1314 * Returns 0 for success, non-zero for failure.
1315 */
1316 static int
1317 _transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
1318 {
1319 struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1320 struct _sas_device *sas_device;
1321 unsigned long flags;
1322 int rc;
1323
1324 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1325 sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
1326 rphy->identify.sas_address);
1327 if (sas_device) {
1328 *identifier = sas_device->enclosure_logical_id;
1329 rc = 0;
1330 } else {
1331 *identifier = 0;
1332 rc = -ENXIO;
1333 }
1334 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1335 return rc;
1336 }
1337
1338 /**
1339 * _transport_get_bay_identifier -
1340 * @phy: The sas phy object
1341 *
1342 * Returns the slot id for a device that resides inside an enclosure.
1343 */
1344 static int
1345 _transport_get_bay_identifier(struct sas_rphy *rphy)
1346 {
1347 struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1348 struct _sas_device *sas_device;
1349 unsigned long flags;
1350 int rc;
1351
1352 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1353 sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
1354 rphy->identify.sas_address);
1355 if (sas_device)
1356 rc = sas_device->slot;
1357 else
1358 rc = -ENXIO;
1359 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1360 return rc;
1361 }
1362
1363 /* phy control request structure */
1364 struct phy_control_request{
1365 u8 smp_frame_type; /* 0x40 */
1366 u8 function; /* 0x91 */
1367 u8 allocated_response_length;
1368 u8 request_length; /* 0x09 */
1369 u16 expander_change_count;
1370 u8 reserved_1[3];
1371 u8 phy_identifier;
1372 u8 phy_operation;
1373 u8 reserved_2[13];
1374 u64 attached_device_name;
1375 u8 programmed_min_physical_link_rate;
1376 u8 programmed_max_physical_link_rate;
1377 u8 reserved_3[6];
1378 };
1379
1380 /* phy control reply structure */
1381 struct phy_control_reply{
1382 u8 smp_frame_type; /* 0x41 */
1383 u8 function; /* 0x11 */
1384 u8 function_result;
1385 u8 response_length;
1386 };
1387
1388 #define SMP_PHY_CONTROL_LINK_RESET (0x01)
1389 #define SMP_PHY_CONTROL_HARD_RESET (0x02)
1390 #define SMP_PHY_CONTROL_DISABLE (0x03)
1391
1392 /**
1393 * _transport_expander_phy_control - expander phy control
1394 * @ioc: per adapter object
1395 * @phy: The sas phy object
1396 *
1397 * Returns 0 for success, non-zero for failure.
1398 *
1399 */
1400 static int
1401 _transport_expander_phy_control(struct MPT2SAS_ADAPTER *ioc,
1402 struct sas_phy *phy, u8 phy_operation)
1403 {
1404 Mpi2SmpPassthroughRequest_t *mpi_request;
1405 Mpi2SmpPassthroughReply_t *mpi_reply;
1406 struct phy_control_request *phy_control_request;
1407 struct phy_control_reply *phy_control_reply;
1408 int rc;
1409 u16 smid;
1410 u32 ioc_state;
1411 unsigned long timeleft;
1412 void *psge;
1413 u32 sgl_flags;
1414 u8 issue_reset = 0;
1415 void *data_out = NULL;
1416 dma_addr_t data_out_dma;
1417 u32 sz;
1418 u16 wait_state_count;
1419
1420 if (ioc->shost_recovery) {
1421 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
1422 __func__, ioc->name);
1423 return -EFAULT;
1424 }
1425
1426 mutex_lock(&ioc->transport_cmds.mutex);
1427
1428 if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
1429 printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n",
1430 ioc->name, __func__);
1431 rc = -EAGAIN;
1432 goto out;
1433 }
1434 ioc->transport_cmds.status = MPT2_CMD_PENDING;
1435
1436 wait_state_count = 0;
1437 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1438 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1439 if (wait_state_count++ == 10) {
1440 printk(MPT2SAS_ERR_FMT
1441 "%s: failed due to ioc not operational\n",
1442 ioc->name, __func__);
1443 rc = -EFAULT;
1444 goto out;
1445 }
1446 ssleep(1);
1447 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1448 printk(MPT2SAS_INFO_FMT "%s: waiting for "
1449 "operational state(count=%d)\n", ioc->name,
1450 __func__, wait_state_count);
1451 }
1452 if (wait_state_count)
1453 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
1454 ioc->name, __func__);
1455
1456 smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
1457 if (!smid) {
1458 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1459 ioc->name, __func__);
1460 rc = -EAGAIN;
1461 goto out;
1462 }
1463
1464 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1465 ioc->transport_cmds.smid = smid;
1466
1467 sz = sizeof(struct phy_control_request) +
1468 sizeof(struct phy_control_reply);
1469 data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
1470 if (!data_out) {
1471 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
1472 __LINE__, __func__);
1473 rc = -ENOMEM;
1474 mpt2sas_base_free_smid(ioc, smid);
1475 goto out;
1476 }
1477
1478 rc = -EINVAL;
1479 memset(data_out, 0, sz);
1480 phy_control_request = data_out;
1481 phy_control_request->smp_frame_type = 0x40;
1482 phy_control_request->function = 0x91;
1483 phy_control_request->request_length = 9;
1484 phy_control_request->allocated_response_length = 0;
1485 phy_control_request->phy_identifier = phy->number;
1486 phy_control_request->phy_operation = phy_operation;
1487 phy_control_request->programmed_min_physical_link_rate =
1488 phy->minimum_linkrate << 4;
1489 phy_control_request->programmed_max_physical_link_rate =
1490 phy->maximum_linkrate << 4;
1491
1492 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1493 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1494 mpi_request->PhysicalPort = 0xFF;
1495 mpi_request->VF_ID = 0; /* TODO */
1496 mpi_request->VP_ID = 0;
1497 mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1498 mpi_request->RequestDataLength =
1499 cpu_to_le16(sizeof(struct phy_error_log_request));
1500 psge = &mpi_request->SGL;
1501
1502 /* WRITE sgel first */
1503 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1504 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
1505 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1506 ioc->base_add_sg_single(psge, sgl_flags |
1507 sizeof(struct phy_control_request), data_out_dma);
1508
1509 /* incr sgel */
1510 psge += ioc->sge_size;
1511
1512 /* READ sgel last */
1513 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1514 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
1515 MPI2_SGE_FLAGS_END_OF_LIST);
1516 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1517 ioc->base_add_sg_single(psge, sgl_flags |
1518 sizeof(struct phy_control_reply), data_out_dma +
1519 sizeof(struct phy_control_request));
1520
1521 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "phy_control - "
1522 "send to sas_addr(0x%016llx), phy(%d), opcode(%d)\n", ioc->name,
1523 (unsigned long long)phy->identify.sas_address, phy->number,
1524 phy_operation));
1525
1526 init_completion(&ioc->transport_cmds.done);
1527 mpt2sas_base_put_smid_default(ioc, smid);
1528 timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
1529 10*HZ);
1530
1531 if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
1532 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
1533 ioc->name, __func__);
1534 _debug_dump_mf(mpi_request,
1535 sizeof(Mpi2SmpPassthroughRequest_t)/4);
1536 if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
1537 issue_reset = 1;
1538 goto issue_host_reset;
1539 }
1540
1541 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "phy_control - "
1542 "complete\n", ioc->name));
1543
1544 if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
1545
1546 mpi_reply = ioc->transport_cmds.reply;
1547
1548 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
1549 "phy_control - reply data transfer size(%d)\n",
1550 ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
1551
1552 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1553 sizeof(struct phy_control_reply))
1554 goto out;
1555
1556 phy_control_reply = data_out +
1557 sizeof(struct phy_control_request);
1558
1559 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
1560 "phy_control - function_result(%d)\n",
1561 ioc->name, phy_control_reply->function_result));
1562
1563 rc = 0;
1564 } else
1565 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
1566 "phy_control - no reply\n", ioc->name));
1567
1568 issue_host_reset:
1569 if (issue_reset)
1570 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1571 FORCE_BIG_HAMMER);
1572 out:
1573 ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
1574 if (data_out)
1575 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
1576
1577 mutex_unlock(&ioc->transport_cmds.mutex);
1578 return rc;
1579 }
1580
1581 /**
1582 * _transport_phy_reset -
1583 * @phy: The sas phy object
1584 * @hard_reset:
1585 *
1586 * Returns 0 for success, non-zero for failure.
1587 */
1588 static int
1589 _transport_phy_reset(struct sas_phy *phy, int hard_reset)
1590 {
1591 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
1592 Mpi2SasIoUnitControlReply_t mpi_reply;
1593 Mpi2SasIoUnitControlRequest_t mpi_request;
1594 unsigned long flags;
1595
1596 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1597 if (_transport_sas_node_find_by_sas_address(ioc,
1598 phy->identify.sas_address) == NULL) {
1599 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1600 return -EINVAL;
1601 }
1602 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1603
1604 /* handle expander phys */
1605 if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1606 return _transport_expander_phy_control(ioc, phy,
1607 (hard_reset == 1) ? SMP_PHY_CONTROL_HARD_RESET :
1608 SMP_PHY_CONTROL_LINK_RESET);
1609
1610 /* handle hba phys */
1611 memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlReply_t));
1612 mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
1613 mpi_request.Operation = hard_reset ?
1614 MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
1615 mpi_request.PhyNum = phy->number;
1616
1617 if ((mpt2sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
1618 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1619 ioc->name, __FILE__, __LINE__, __func__);
1620 return -ENXIO;
1621 }
1622
1623 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1624 printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
1625 "(0x%04x), loginfo(0x%08x)\n", ioc->name,
1626 phy->number, le16_to_cpu(mpi_reply.IOCStatus),
1627 le32_to_cpu(mpi_reply.IOCLogInfo));
1628
1629 return 0;
1630 }
1631
1632 /**
1633 * _transport_phy_enable - enable/disable phys
1634 * @phy: The sas phy object
1635 * @enable: enable phy when true
1636 *
1637 * Only support sas_host direct attached phys.
1638 * Returns 0 for success, non-zero for failure.
1639 */
1640 static int
1641 _transport_phy_enable(struct sas_phy *phy, int enable)
1642 {
1643 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
1644 Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1645 Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
1646 Mpi2ConfigReply_t mpi_reply;
1647 u16 ioc_status;
1648 u16 sz;
1649 int rc = 0;
1650 unsigned long flags;
1651 int i, discovery_active;
1652
1653 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1654 if (_transport_sas_node_find_by_sas_address(ioc,
1655 phy->identify.sas_address) == NULL) {
1656 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1657 return -EINVAL;
1658 }
1659 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1660
1661 /* handle expander phys */
1662 if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1663 return _transport_expander_phy_control(ioc, phy,
1664 (enable == 1) ? SMP_PHY_CONTROL_LINK_RESET :
1665 SMP_PHY_CONTROL_DISABLE);
1666
1667 /* handle hba phys */
1668
1669 /* read sas_iounit page 0 */
1670 sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys *
1671 sizeof(Mpi2SasIOUnit0PhyData_t));
1672 sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
1673 if (!sas_iounit_pg0) {
1674 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1675 ioc->name, __FILE__, __LINE__, __func__);
1676 rc = -ENOMEM;
1677 goto out;
1678 }
1679 if ((mpt2sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
1680 sas_iounit_pg0, sz))) {
1681 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1682 ioc->name, __FILE__, __LINE__, __func__);
1683 rc = -ENXIO;
1684 goto out;
1685 }
1686 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1687 MPI2_IOCSTATUS_MASK;
1688 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1689 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1690 ioc->name, __FILE__, __LINE__, __func__);
1691 rc = -EIO;
1692 goto out;
1693 }
1694
1695 /* unable to enable/disable phys when when discovery is active */
1696 for (i = 0, discovery_active = 0; i < ioc->sas_hba.num_phys ; i++) {
1697 if (sas_iounit_pg0->PhyData[i].PortFlags &
1698 MPI2_SASIOUNIT0_PORTFLAGS_DISCOVERY_IN_PROGRESS) {
1699 printk(MPT2SAS_ERR_FMT "discovery is active on "
1700 "port = %d, phy = %d: unable to enable/disable "
1701 "phys, try again later!\n", ioc->name,
1702 sas_iounit_pg0->PhyData[i].Port, i);
1703 discovery_active = 1;
1704 }
1705 }
1706
1707 if (discovery_active) {
1708 rc = -EAGAIN;
1709 goto out;
1710 }
1711
1712 /* read sas_iounit page 1 */
1713 sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1714 sizeof(Mpi2SasIOUnit1PhyData_t));
1715 sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1716 if (!sas_iounit_pg1) {
1717 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1718 ioc->name, __FILE__, __LINE__, __func__);
1719 rc = -ENOMEM;
1720 goto out;
1721 }
1722 if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1723 sas_iounit_pg1, sz))) {
1724 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1725 ioc->name, __FILE__, __LINE__, __func__);
1726 rc = -ENXIO;
1727 goto out;
1728 }
1729 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1730 MPI2_IOCSTATUS_MASK;
1731 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1732 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1733 ioc->name, __FILE__, __LINE__, __func__);
1734 rc = -EIO;
1735 goto out;
1736 }
1737 /* copy Port/PortFlags/PhyFlags from page 0 */
1738 for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
1739 sas_iounit_pg1->PhyData[i].Port =
1740 sas_iounit_pg0->PhyData[i].Port;
1741 sas_iounit_pg1->PhyData[i].PortFlags =
1742 (sas_iounit_pg0->PhyData[i].PortFlags &
1743 MPI2_SASIOUNIT0_PORTFLAGS_AUTO_PORT_CONFIG);
1744 sas_iounit_pg1->PhyData[i].PhyFlags =
1745 (sas_iounit_pg0->PhyData[i].PhyFlags &
1746 (MPI2_SASIOUNIT0_PHYFLAGS_ZONING_ENABLED +
1747 MPI2_SASIOUNIT0_PHYFLAGS_PHY_DISABLED));
1748 }
1749 if (enable)
1750 sas_iounit_pg1->PhyData[phy->number].PhyFlags
1751 &= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1752 else
1753 sas_iounit_pg1->PhyData[phy->number].PhyFlags
1754 |= MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1755
1756 mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, sz);
1757
1758 /* link reset */
1759 if (enable)
1760 _transport_phy_reset(phy, 0);
1761
1762 out:
1763 kfree(sas_iounit_pg1);
1764 kfree(sas_iounit_pg0);
1765 return rc;
1766 }
1767
1768 /**
1769 * _transport_phy_speed - set phy min/max link rates
1770 * @phy: The sas phy object
1771 * @rates: rates defined in sas_phy_linkrates
1772 *
1773 * Only support sas_host direct attached phys.
1774 * Returns 0 for success, non-zero for failure.
1775 */
1776 static int
1777 _transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
1778 {
1779 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
1780 Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1781 Mpi2SasPhyPage0_t phy_pg0;
1782 Mpi2ConfigReply_t mpi_reply;
1783 u16 ioc_status;
1784 u16 sz;
1785 int i;
1786 int rc = 0;
1787 unsigned long flags;
1788
1789 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1790 if (_transport_sas_node_find_by_sas_address(ioc,
1791 phy->identify.sas_address) == NULL) {
1792 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1793 return -EINVAL;
1794 }
1795 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1796
1797 if (!rates->minimum_linkrate)
1798 rates->minimum_linkrate = phy->minimum_linkrate;
1799 else if (rates->minimum_linkrate < phy->minimum_linkrate_hw)
1800 rates->minimum_linkrate = phy->minimum_linkrate_hw;
1801
1802 if (!rates->maximum_linkrate)
1803 rates->maximum_linkrate = phy->maximum_linkrate;
1804 else if (rates->maximum_linkrate > phy->maximum_linkrate_hw)
1805 rates->maximum_linkrate = phy->maximum_linkrate_hw;
1806
1807 /* handle expander phys */
1808 if (phy->identify.sas_address != ioc->sas_hba.sas_address) {
1809 phy->minimum_linkrate = rates->minimum_linkrate;
1810 phy->maximum_linkrate = rates->maximum_linkrate;
1811 return _transport_expander_phy_control(ioc, phy,
1812 SMP_PHY_CONTROL_LINK_RESET);
1813 }
1814
1815 /* handle hba phys */
1816
1817 /* sas_iounit page 1 */
1818 sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1819 sizeof(Mpi2SasIOUnit1PhyData_t));
1820 sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1821 if (!sas_iounit_pg1) {
1822 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1823 ioc->name, __FILE__, __LINE__, __func__);
1824 rc = -ENOMEM;
1825 goto out;
1826 }
1827 if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1828 sas_iounit_pg1, sz))) {
1829 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1830 ioc->name, __FILE__, __LINE__, __func__);
1831 rc = -ENXIO;
1832 goto out;
1833 }
1834 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1835 MPI2_IOCSTATUS_MASK;
1836 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1837 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1838 ioc->name, __FILE__, __LINE__, __func__);
1839 rc = -EIO;
1840 goto out;
1841 }
1842
1843 for (i = 0; i < ioc->sas_hba.num_phys; i++) {
1844 if (phy->number != i) {
1845 sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1846 (ioc->sas_hba.phy[i].phy->minimum_linkrate +
1847 (ioc->sas_hba.phy[i].phy->maximum_linkrate << 4));
1848 } else {
1849 sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1850 (rates->minimum_linkrate +
1851 (rates->maximum_linkrate << 4));
1852 }
1853 }
1854
1855 if (mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
1856 sz)) {
1857 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1858 ioc->name, __FILE__, __LINE__, __func__);
1859 rc = -ENXIO;
1860 goto out;
1861 }
1862
1863 /* link reset */
1864 _transport_phy_reset(phy, 0);
1865
1866 /* read phy page 0, then update the rates in the sas transport phy */
1867 if (!mpt2sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
1868 phy->number)) {
1869 phy->minimum_linkrate = _transport_convert_phy_link_rate(
1870 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1871 phy->maximum_linkrate = _transport_convert_phy_link_rate(
1872 phy_pg0.ProgrammedLinkRate >> 4);
1873 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1874 phy_pg0.NegotiatedLinkRate &
1875 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1876 }
1877
1878 out:
1879 kfree(sas_iounit_pg1);
1880 return rc;
1881 }
1882
1883
1884 /**
1885 * _transport_smp_handler - transport portal for smp passthru
1886 * @shost: shost object
1887 * @rphy: sas transport rphy object
1888 * @req:
1889 *
1890 * This used primarily for smp_utils.
1891 * Example:
1892 * smp_rep_general /sys/class/bsg/expander-5:0
1893 */
1894 static int
1895 _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
1896 struct request *req)
1897 {
1898 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
1899 Mpi2SmpPassthroughRequest_t *mpi_request;
1900 Mpi2SmpPassthroughReply_t *mpi_reply;
1901 int rc, i;
1902 u16 smid;
1903 u32 ioc_state;
1904 unsigned long timeleft;
1905 void *psge;
1906 u32 sgl_flags;
1907 u8 issue_reset = 0;
1908 dma_addr_t dma_addr_in = 0;
1909 dma_addr_t dma_addr_out = 0;
1910 dma_addr_t pci_dma_in = 0;
1911 dma_addr_t pci_dma_out = 0;
1912 void *pci_addr_in = NULL;
1913 void *pci_addr_out = NULL;
1914 u16 wait_state_count;
1915 struct request *rsp = req->next_rq;
1916 struct bio_vec *bvec = NULL;
1917
1918 if (!rsp) {
1919 printk(MPT2SAS_ERR_FMT "%s: the smp response space is "
1920 "missing\n", ioc->name, __func__);
1921 return -EINVAL;
1922 }
1923 if (ioc->shost_recovery || ioc->pci_error_recovery) {
1924 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
1925 __func__, ioc->name);
1926 return -EFAULT;
1927 }
1928
1929 rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
1930 if (rc)
1931 return rc;
1932
1933 if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
1934 printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n", ioc->name,
1935 __func__);
1936 rc = -EAGAIN;
1937 goto out;
1938 }
1939 ioc->transport_cmds.status = MPT2_CMD_PENDING;
1940
1941 /* Check if the request is split across multiple segments */
1942 if (req->bio->bi_vcnt > 1) {
1943 u32 offset = 0;
1944
1945 /* Allocate memory and copy the request */
1946 pci_addr_out = pci_alloc_consistent(ioc->pdev,
1947 blk_rq_bytes(req), &pci_dma_out);
1948 if (!pci_addr_out) {
1949 printk(MPT2SAS_INFO_FMT "%s(): PCI Addr out = NULL\n",
1950 ioc->name, __func__);
1951 rc = -ENOMEM;
1952 goto out;
1953 }
1954
1955 bio_for_each_segment(bvec, req->bio, i) {
1956 memcpy(pci_addr_out + offset,
1957 page_address(bvec->bv_page) + bvec->bv_offset,
1958 bvec->bv_len);
1959 offset += bvec->bv_len;
1960 }
1961 } else {
1962 dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio),
1963 blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL);
1964 if (!dma_addr_out) {
1965 printk(MPT2SAS_INFO_FMT "%s(): DMA Addr out = NULL\n",
1966 ioc->name, __func__);
1967 rc = -ENOMEM;
1968 goto free_pci;
1969 }
1970 }
1971
1972 /* Check if the response needs to be populated across
1973 * multiple segments */
1974 if (rsp->bio->bi_vcnt > 1) {
1975 pci_addr_in = pci_alloc_consistent(ioc->pdev, blk_rq_bytes(rsp),
1976 &pci_dma_in);
1977 if (!pci_addr_in) {
1978 printk(MPT2SAS_INFO_FMT "%s(): PCI Addr in = NULL\n",
1979 ioc->name, __func__);
1980 rc = -ENOMEM;
1981 goto unmap;
1982 }
1983 } else {
1984 dma_addr_in = pci_map_single(ioc->pdev, bio_data(rsp->bio),
1985 blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL);
1986 if (!dma_addr_in) {
1987 printk(MPT2SAS_INFO_FMT "%s(): DMA Addr in = NULL\n",
1988 ioc->name, __func__);
1989 rc = -ENOMEM;
1990 goto unmap;
1991 }
1992 }
1993
1994 wait_state_count = 0;
1995 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1996 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1997 if (wait_state_count++ == 10) {
1998 printk(MPT2SAS_ERR_FMT
1999 "%s: failed due to ioc not operational\n",
2000 ioc->name, __func__);
2001 rc = -EFAULT;
2002 goto unmap;
2003 }
2004 ssleep(1);
2005 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
2006 printk(MPT2SAS_INFO_FMT "%s: waiting for "
2007 "operational state(count=%d)\n", ioc->name,
2008 __func__, wait_state_count);
2009 }
2010 if (wait_state_count)
2011 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
2012 ioc->name, __func__);
2013
2014 smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
2015 if (!smid) {
2016 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
2017 ioc->name, __func__);
2018 rc = -EAGAIN;
2019 goto unmap;
2020 }
2021
2022 rc = 0;
2023 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
2024 ioc->transport_cmds.smid = smid;
2025
2026 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
2027 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
2028 mpi_request->PhysicalPort = 0xFF;
2029 mpi_request->VF_ID = 0; /* TODO */
2030 mpi_request->VP_ID = 0;
2031 mpi_request->SASAddress = (rphy) ?
2032 cpu_to_le64(rphy->identify.sas_address) :
2033 cpu_to_le64(ioc->sas_hba.sas_address);
2034 mpi_request->RequestDataLength = cpu_to_le16(blk_rq_bytes(req) - 4);
2035 psge = &mpi_request->SGL;
2036
2037 /* WRITE sgel first */
2038 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
2039 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
2040 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
2041 if (req->bio->bi_vcnt > 1) {
2042 ioc->base_add_sg_single(psge, sgl_flags |
2043 (blk_rq_bytes(req) - 4), pci_dma_out);
2044 } else {
2045 ioc->base_add_sg_single(psge, sgl_flags |
2046 (blk_rq_bytes(req) - 4), dma_addr_out);
2047 }
2048
2049 /* incr sgel */
2050 psge += ioc->sge_size;
2051
2052 /* READ sgel last */
2053 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
2054 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
2055 MPI2_SGE_FLAGS_END_OF_LIST);
2056 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
2057 if (rsp->bio->bi_vcnt > 1) {
2058 ioc->base_add_sg_single(psge, sgl_flags |
2059 (blk_rq_bytes(rsp) + 4), pci_dma_in);
2060 } else {
2061 ioc->base_add_sg_single(psge, sgl_flags |
2062 (blk_rq_bytes(rsp) + 4), dma_addr_in);
2063 }
2064
2065 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "%s - "
2066 "sending smp request\n", ioc->name, __func__));
2067
2068 init_completion(&ioc->transport_cmds.done);
2069 mpt2sas_base_put_smid_default(ioc, smid);
2070 timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
2071 10*HZ);
2072
2073 if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
2074 printk(MPT2SAS_ERR_FMT "%s : timeout\n",
2075 __func__, ioc->name);
2076 _debug_dump_mf(mpi_request,
2077 sizeof(Mpi2SmpPassthroughRequest_t)/4);
2078 if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
2079 issue_reset = 1;
2080 goto issue_host_reset;
2081 }
2082
2083 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "%s - "
2084 "complete\n", ioc->name, __func__));
2085
2086 if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
2087
2088 mpi_reply = ioc->transport_cmds.reply;
2089
2090 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
2091 "%s - reply data transfer size(%d)\n",
2092 ioc->name, __func__,
2093 le16_to_cpu(mpi_reply->ResponseDataLength)));
2094
2095 memcpy(req->sense, mpi_reply, sizeof(*mpi_reply));
2096 req->sense_len = sizeof(*mpi_reply);
2097 req->resid_len = 0;
2098 rsp->resid_len -=
2099 le16_to_cpu(mpi_reply->ResponseDataLength);
2100 /* check if the resp needs to be copied from the allocated
2101 * pci mem */
2102 if (rsp->bio->bi_vcnt > 1) {
2103 u32 offset = 0;
2104 u32 bytes_to_copy =
2105 le16_to_cpu(mpi_reply->ResponseDataLength);
2106 bio_for_each_segment(bvec, rsp->bio, i) {
2107 if (bytes_to_copy <= bvec->bv_len) {
2108 memcpy(page_address(bvec->bv_page) +
2109 bvec->bv_offset, pci_addr_in +
2110 offset, bytes_to_copy);
2111 break;
2112 } else {
2113 memcpy(page_address(bvec->bv_page) +
2114 bvec->bv_offset, pci_addr_in +
2115 offset, bvec->bv_len);
2116 bytes_to_copy -= bvec->bv_len;
2117 }
2118 offset += bvec->bv_len;
2119 }
2120 }
2121 } else {
2122 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
2123 "%s - no reply\n", ioc->name, __func__));
2124 rc = -ENXIO;
2125 }
2126
2127 issue_host_reset:
2128 if (issue_reset) {
2129 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2130 FORCE_BIG_HAMMER);
2131 rc = -ETIMEDOUT;
2132 }
2133
2134 unmap:
2135 if (dma_addr_out)
2136 pci_unmap_single(ioc->pdev, dma_addr_out, blk_rq_bytes(req),
2137 PCI_DMA_BIDIRECTIONAL);
2138 if (dma_addr_in)
2139 pci_unmap_single(ioc->pdev, dma_addr_in, blk_rq_bytes(rsp),
2140 PCI_DMA_BIDIRECTIONAL);
2141
2142 free_pci:
2143 if (pci_addr_out)
2144 pci_free_consistent(ioc->pdev, blk_rq_bytes(req), pci_addr_out,
2145 pci_dma_out);
2146
2147 if (pci_addr_in)
2148 pci_free_consistent(ioc->pdev, blk_rq_bytes(rsp), pci_addr_in,
2149 pci_dma_in);
2150
2151 out:
2152 ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
2153 mutex_unlock(&ioc->transport_cmds.mutex);
2154 return rc;
2155 }
2156
2157 struct sas_function_template mpt2sas_transport_functions = {
2158 .get_linkerrors = _transport_get_linkerrors,
2159 .get_enclosure_identifier = _transport_get_enclosure_identifier,
2160 .get_bay_identifier = _transport_get_bay_identifier,
2161 .phy_reset = _transport_phy_reset,
2162 .phy_enable = _transport_phy_enable,
2163 .set_phy_speed = _transport_phy_speed,
2164 .smp_handler = _transport_smp_handler,
2165 };
2166
2167 struct scsi_transport_template *mpt2sas_transport_template;
Linux with added FPC-III support