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staging: usbip: bugfix for isochronous packets and optimization
[zen-stable.git] / drivers / scsi / mpt2sas / mpt2sas_transport.c
blobcb1cdecbe0f881b83b0f6825724b725bb1632be3
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) 2007-2010 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(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 /* device_type */
173 switch (device_info & MPI2_SAS_DEVICE_INFO_MASK_DEVICE_TYPE) {
174 case MPI2_SAS_DEVICE_INFO_NO_DEVICE:
175 identify->device_type = SAS_PHY_UNUSED;
176 break;
177 case MPI2_SAS_DEVICE_INFO_END_DEVICE:
178 identify->device_type = SAS_END_DEVICE;
179 break;
180 case MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER:
181 identify->device_type = SAS_EDGE_EXPANDER_DEVICE;
182 break;
183 case MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER:
184 identify->device_type = SAS_FANOUT_EXPANDER_DEVICE;
185 break;
186 }
187
188 /* initiator_port_protocols */
189 if (device_info & MPI2_SAS_DEVICE_INFO_SSP_INITIATOR)
190 identify->initiator_port_protocols |= SAS_PROTOCOL_SSP;
191 if (device_info & MPI2_SAS_DEVICE_INFO_STP_INITIATOR)
192 identify->initiator_port_protocols |= SAS_PROTOCOL_STP;
193 if (device_info & MPI2_SAS_DEVICE_INFO_SMP_INITIATOR)
194 identify->initiator_port_protocols |= SAS_PROTOCOL_SMP;
195 if (device_info & MPI2_SAS_DEVICE_INFO_SATA_HOST)
196 identify->initiator_port_protocols |= SAS_PROTOCOL_SATA;
197
198 /* target_port_protocols */
199 if (device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET)
200 identify->target_port_protocols |= SAS_PROTOCOL_SSP;
201 if (device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET)
202 identify->target_port_protocols |= SAS_PROTOCOL_STP;
203 if (device_info & MPI2_SAS_DEVICE_INFO_SMP_TARGET)
204 identify->target_port_protocols |= SAS_PROTOCOL_SMP;
205 if (device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
206 identify->target_port_protocols |= SAS_PROTOCOL_SATA;
207
208 return 0;
209 }
210
211 /**
212 * mpt2sas_transport_done - internal transport layer callback handler.
213 * @ioc: per adapter object
214 * @smid: system request message index
215 * @msix_index: MSIX table index supplied by the OS
216 * @reply: reply message frame(lower 32bit addr)
217 *
218 * Callback handler when sending internal generated transport cmds.
219 * The callback index passed is `ioc->transport_cb_idx`
220 *
221 * Return 1 meaning mf should be freed from _base_interrupt
222 * 0 means the mf is freed from this function.
223 */
224 u8
225 mpt2sas_transport_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
226 u32 reply)
227 {
228 MPI2DefaultReply_t *mpi_reply;
229
230 mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
231 if (ioc->transport_cmds.status == MPT2_CMD_NOT_USED)
232 return 1;
233 if (ioc->transport_cmds.smid != smid)
234 return 1;
235 ioc->transport_cmds.status |= MPT2_CMD_COMPLETE;
236 if (mpi_reply) {
237 memcpy(ioc->transport_cmds.reply, mpi_reply,
238 mpi_reply->MsgLength*4);
239 ioc->transport_cmds.status |= MPT2_CMD_REPLY_VALID;
240 }
241 ioc->transport_cmds.status &= ~MPT2_CMD_PENDING;
242 complete(&ioc->transport_cmds.done);
243 return 1;
244 }
245
246 /* report manufacture request structure */
247 struct rep_manu_request{
248 u8 smp_frame_type;
249 u8 function;
250 u8 reserved;
251 u8 request_length;
252 };
253
254 /* report manufacture reply structure */
255 struct rep_manu_reply{
256 u8 smp_frame_type; /* 0x41 */
257 u8 function; /* 0x01 */
258 u8 function_result;
259 u8 response_length;
260 u16 expander_change_count;
261 u8 reserved0[2];
262 u8 sas_format;
263 u8 reserved2[3];
264 u8 vendor_id[SAS_EXPANDER_VENDOR_ID_LEN];
265 u8 product_id[SAS_EXPANDER_PRODUCT_ID_LEN];
266 u8 product_rev[SAS_EXPANDER_PRODUCT_REV_LEN];
267 u8 component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN];
268 u16 component_id;
269 u8 component_revision_id;
270 u8 reserved3;
271 u8 vendor_specific[8];
272 };
273
274 /**
275 * _transport_expander_report_manufacture - obtain SMP report_manufacture
276 * @ioc: per adapter object
277 * @sas_address: expander sas address
278 * @edev: the sas_expander_device object
279 *
280 * Fills in the sas_expander_device object when SMP port is created.
281 *
282 * Returns 0 for success, non-zero for failure.
283 */
284 static int
285 _transport_expander_report_manufacture(struct MPT2SAS_ADAPTER *ioc,
286 u64 sas_address, struct sas_expander_device *edev)
287 {
288 Mpi2SmpPassthroughRequest_t *mpi_request;
289 Mpi2SmpPassthroughReply_t *mpi_reply;
290 struct rep_manu_reply *manufacture_reply;
291 struct rep_manu_request *manufacture_request;
292 int rc;
293 u16 smid;
294 u32 ioc_state;
295 unsigned long timeleft;
296 void *psge;
297 u32 sgl_flags;
298 u8 issue_reset = 0;
299 void *data_out = NULL;
300 dma_addr_t data_out_dma;
301 u32 sz;
302 u64 *sas_address_le;
303 u16 wait_state_count;
304
305 if (ioc->shost_recovery || ioc->pci_error_recovery) {
306 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
307 __func__, ioc->name);
308 return -EFAULT;
309 }
310
311 mutex_lock(&ioc->transport_cmds.mutex);
312
313 if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
314 printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n",
315 ioc->name, __func__);
316 rc = -EAGAIN;
317 goto out;
318 }
319 ioc->transport_cmds.status = MPT2_CMD_PENDING;
320
321 wait_state_count = 0;
322 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
323 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
324 if (wait_state_count++ == 10) {
325 printk(MPT2SAS_ERR_FMT
326 "%s: failed due to ioc not operational\n",
327 ioc->name, __func__);
328 rc = -EFAULT;
329 goto out;
330 }
331 ssleep(1);
332 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
333 printk(MPT2SAS_INFO_FMT "%s: waiting for "
334 "operational state(count=%d)\n", ioc->name,
335 __func__, wait_state_count);
336 }
337 if (wait_state_count)
338 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
339 ioc->name, __func__);
340
341 smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
342 if (!smid) {
343 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
344 ioc->name, __func__);
345 rc = -EAGAIN;
346 goto out;
347 }
348
349 rc = 0;
350 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
351 ioc->transport_cmds.smid = smid;
352
353 sz = sizeof(struct rep_manu_request) + sizeof(struct rep_manu_reply);
354 data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
355
356 if (!data_out) {
357 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
358 __LINE__, __func__);
359 rc = -ENOMEM;
360 mpt2sas_base_free_smid(ioc, smid);
361 goto out;
362 }
363
364 manufacture_request = data_out;
365 manufacture_request->smp_frame_type = 0x40;
366 manufacture_request->function = 1;
367 manufacture_request->reserved = 0;
368 manufacture_request->request_length = 0;
369
370 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
371 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
372 mpi_request->PhysicalPort = 0xFF;
373 mpi_request->VF_ID = 0; /* TODO */
374 mpi_request->VP_ID = 0;
375 sas_address_le = (u64 *)&mpi_request->SASAddress;
376 *sas_address_le = cpu_to_le64(sas_address);
377 mpi_request->RequestDataLength =
378 cpu_to_le16(sizeof(struct rep_manu_request));
379 psge = &mpi_request->SGL;
380
381 /* WRITE sgel first */
382 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
383 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
384 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
385 ioc->base_add_sg_single(psge, sgl_flags |
386 sizeof(struct rep_manu_request), data_out_dma);
387
388 /* incr sgel */
389 psge += ioc->sge_size;
390
391 /* READ sgel last */
392 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
393 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
394 MPI2_SGE_FLAGS_END_OF_LIST);
395 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
396 ioc->base_add_sg_single(psge, sgl_flags |
397 sizeof(struct rep_manu_reply), data_out_dma +
398 sizeof(struct rep_manu_request));
399
400 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "report_manufacture - "
401 "send to sas_addr(0x%016llx)\n", ioc->name,
402 (unsigned long long)sas_address));
403 mpt2sas_base_put_smid_default(ioc, smid);
404 init_completion(&ioc->transport_cmds.done);
405 timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
406 10*HZ);
407
408 if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
409 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
410 ioc->name, __func__);
411 _debug_dump_mf(mpi_request,
412 sizeof(Mpi2SmpPassthroughRequest_t)/4);
413 if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
414 issue_reset = 1;
415 goto issue_host_reset;
416 }
417
418 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "report_manufacture - "
419 "complete\n", ioc->name));
420
421 if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
422 u8 *tmp;
423
424 mpi_reply = ioc->transport_cmds.reply;
425
426 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
427 "report_manufacture - reply data transfer size(%d)\n",
428 ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
429
430 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
431 sizeof(struct rep_manu_reply))
432 goto out;
433
434 manufacture_reply = data_out + sizeof(struct rep_manu_request);
435 strncpy(edev->vendor_id, manufacture_reply->vendor_id,
436 SAS_EXPANDER_VENDOR_ID_LEN);
437 strncpy(edev->product_id, manufacture_reply->product_id,
438 SAS_EXPANDER_PRODUCT_ID_LEN);
439 strncpy(edev->product_rev, manufacture_reply->product_rev,
440 SAS_EXPANDER_PRODUCT_REV_LEN);
441 edev->level = manufacture_reply->sas_format & 1;
442 if (edev->level) {
443 strncpy(edev->component_vendor_id,
444 manufacture_reply->component_vendor_id,
445 SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN);
446 tmp = (u8 *)&manufacture_reply->component_id;
447 edev->component_id = tmp[0] << 8 | tmp[1];
448 edev->component_revision_id =
449 manufacture_reply->component_revision_id;
450 }
451 } else
452 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
453 "report_manufacture - no reply\n", ioc->name));
454
455 issue_host_reset:
456 if (issue_reset)
457 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
458 FORCE_BIG_HAMMER);
459 out:
460 ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
461 if (data_out)
462 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
463
464 mutex_unlock(&ioc->transport_cmds.mutex);
465 return rc;
466 }
467
468 /**
469 * _transport_delete_port - helper function to removing a port
470 * @ioc: per adapter object
471 * @mpt2sas_port: mpt2sas per port object
472 *
473 * Returns nothing.
474 */
475 static void
476 _transport_delete_port(struct MPT2SAS_ADAPTER *ioc,
477 struct _sas_port *mpt2sas_port)
478 {
479 u64 sas_address = mpt2sas_port->remote_identify.sas_address;
480 enum sas_device_type device_type =
481 mpt2sas_port->remote_identify.device_type;
482
483 dev_printk(KERN_INFO, &mpt2sas_port->port->dev,
484 "remove: sas_addr(0x%016llx)\n",
485 (unsigned long long) sas_address);
486
487 ioc->logging_level |= MPT_DEBUG_TRANSPORT;
488 if (device_type == SAS_END_DEVICE)
489 mpt2sas_device_remove(ioc, sas_address);
490 else if (device_type == SAS_EDGE_EXPANDER_DEVICE ||
491 device_type == SAS_FANOUT_EXPANDER_DEVICE)
492 mpt2sas_expander_remove(ioc, sas_address);
493 ioc->logging_level &= ~MPT_DEBUG_TRANSPORT;
494 }
495
496 /**
497 * _transport_delete_phy - helper function to removing single phy from port
498 * @ioc: per adapter object
499 * @mpt2sas_port: mpt2sas per port object
500 * @mpt2sas_phy: mpt2sas per phy object
501 *
502 * Returns nothing.
503 */
504 static void
505 _transport_delete_phy(struct MPT2SAS_ADAPTER *ioc,
506 struct _sas_port *mpt2sas_port, struct _sas_phy *mpt2sas_phy)
507 {
508 u64 sas_address = mpt2sas_port->remote_identify.sas_address;
509
510 dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
511 "remove: sas_addr(0x%016llx), phy(%d)\n",
512 (unsigned long long) sas_address, mpt2sas_phy->phy_id);
513
514 list_del(&mpt2sas_phy->port_siblings);
515 mpt2sas_port->num_phys--;
516 sas_port_delete_phy(mpt2sas_port->port, mpt2sas_phy->phy);
517 mpt2sas_phy->phy_belongs_to_port = 0;
518 }
519
520 /**
521 * _transport_add_phy - helper function to adding single phy to port
522 * @ioc: per adapter object
523 * @mpt2sas_port: mpt2sas per port object
524 * @mpt2sas_phy: mpt2sas per phy object
525 *
526 * Returns nothing.
527 */
528 static void
529 _transport_add_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_port *mpt2sas_port,
530 struct _sas_phy *mpt2sas_phy)
531 {
532 u64 sas_address = mpt2sas_port->remote_identify.sas_address;
533
534 dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
535 "add: sas_addr(0x%016llx), phy(%d)\n", (unsigned long long)
536 sas_address, mpt2sas_phy->phy_id);
537
538 list_add_tail(&mpt2sas_phy->port_siblings, &mpt2sas_port->phy_list);
539 mpt2sas_port->num_phys++;
540 sas_port_add_phy(mpt2sas_port->port, mpt2sas_phy->phy);
541 mpt2sas_phy->phy_belongs_to_port = 1;
542 }
543
544 /**
545 * _transport_add_phy_to_an_existing_port - adding new phy to existing port
546 * @ioc: per adapter object
547 * @sas_node: sas node object (either expander or sas host)
548 * @mpt2sas_phy: mpt2sas per phy object
549 * @sas_address: sas address of device/expander were phy needs to be added to
550 *
551 * Returns nothing.
552 */
553 static void
554 _transport_add_phy_to_an_existing_port(struct MPT2SAS_ADAPTER *ioc,
555 struct _sas_node *sas_node, struct _sas_phy *mpt2sas_phy, u64 sas_address)
556 {
557 struct _sas_port *mpt2sas_port;
558 struct _sas_phy *phy_srch;
559
560 if (mpt2sas_phy->phy_belongs_to_port == 1)
561 return;
562
563 list_for_each_entry(mpt2sas_port, &sas_node->sas_port_list,
564 port_list) {
565 if (mpt2sas_port->remote_identify.sas_address !=
566 sas_address)
567 continue;
568 list_for_each_entry(phy_srch, &mpt2sas_port->phy_list,
569 port_siblings) {
570 if (phy_srch == mpt2sas_phy)
571 return;
572 }
573 _transport_add_phy(ioc, mpt2sas_port, mpt2sas_phy);
574 return;
575 }
576
577 }
578
579 /**
580 * _transport_del_phy_from_an_existing_port - delete phy from existing port
581 * @ioc: per adapter object
582 * @sas_node: sas node object (either expander or sas host)
583 * @mpt2sas_phy: mpt2sas per phy object
584 *
585 * Returns nothing.
586 */
587 static void
588 _transport_del_phy_from_an_existing_port(struct MPT2SAS_ADAPTER *ioc,
589 struct _sas_node *sas_node, struct _sas_phy *mpt2sas_phy)
590 {
591 struct _sas_port *mpt2sas_port, *next;
592 struct _sas_phy *phy_srch;
593
594 if (mpt2sas_phy->phy_belongs_to_port == 0)
595 return;
596
597 list_for_each_entry_safe(mpt2sas_port, next, &sas_node->sas_port_list,
598 port_list) {
599 list_for_each_entry(phy_srch, &mpt2sas_port->phy_list,
600 port_siblings) {
601 if (phy_srch != mpt2sas_phy)
602 continue;
603 if (mpt2sas_port->num_phys == 1)
604 _transport_delete_port(ioc, mpt2sas_port);
605 else
606 _transport_delete_phy(ioc, mpt2sas_port,
607 mpt2sas_phy);
608 return;
609 }
610 }
611 }
612
613 /**
614 * _transport_sanity_check - sanity check when adding a new port
615 * @ioc: per adapter object
616 * @sas_node: sas node object (either expander or sas host)
617 * @sas_address: sas address of device being added
618 *
619 * See the explanation above from _transport_delete_duplicate_port
620 */
621 static void
622 _transport_sanity_check(struct MPT2SAS_ADAPTER *ioc, struct _sas_node *sas_node,
623 u64 sas_address)
624 {
625 int i;
626
627 for (i = 0; i < sas_node->num_phys; i++) {
628 if (sas_node->phy[i].remote_identify.sas_address != sas_address)
629 continue;
630 if (sas_node->phy[i].phy_belongs_to_port == 1)
631 _transport_del_phy_from_an_existing_port(ioc, sas_node,
632 &sas_node->phy[i]);
633 }
634 }
635
636 /**
637 * mpt2sas_transport_port_add - insert port to the list
638 * @ioc: per adapter object
639 * @handle: handle of attached device
640 * @sas_address: sas address of parent expander or sas host
641 * Context: This function will acquire ioc->sas_node_lock.
642 *
643 * Adding new port object to the sas_node->sas_port_list.
644 *
645 * Returns mpt2sas_port.
646 */
647 struct _sas_port *
648 mpt2sas_transport_port_add(struct MPT2SAS_ADAPTER *ioc, u16 handle,
649 u64 sas_address)
650 {
651 struct _sas_phy *mpt2sas_phy, *next;
652 struct _sas_port *mpt2sas_port;
653 unsigned long flags;
654 struct _sas_node *sas_node;
655 struct sas_rphy *rphy;
656 int i;
657 struct sas_port *port;
658
659 mpt2sas_port = kzalloc(sizeof(struct _sas_port),
660 GFP_KERNEL);
661 if (!mpt2sas_port) {
662 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
663 ioc->name, __FILE__, __LINE__, __func__);
664 return NULL;
665 }
666
667 INIT_LIST_HEAD(&mpt2sas_port->port_list);
668 INIT_LIST_HEAD(&mpt2sas_port->phy_list);
669 spin_lock_irqsave(&ioc->sas_node_lock, flags);
670 sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
671 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
672
673 if (!sas_node) {
674 printk(MPT2SAS_ERR_FMT "%s: Could not find "
675 "parent sas_address(0x%016llx)!\n", ioc->name,
676 __func__, (unsigned long long)sas_address);
677 goto out_fail;
678 }
679
680 if ((_transport_set_identify(ioc, handle,
681 &mpt2sas_port->remote_identify))) {
682 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
683 ioc->name, __FILE__, __LINE__, __func__);
684 goto out_fail;
685 }
686
687 if (mpt2sas_port->remote_identify.device_type == SAS_PHY_UNUSED) {
688 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
689 ioc->name, __FILE__, __LINE__, __func__);
690 goto out_fail;
691 }
692
693 _transport_sanity_check(ioc, sas_node,
694 mpt2sas_port->remote_identify.sas_address);
695
696 for (i = 0; i < sas_node->num_phys; i++) {
697 if (sas_node->phy[i].remote_identify.sas_address !=
698 mpt2sas_port->remote_identify.sas_address)
699 continue;
700 list_add_tail(&sas_node->phy[i].port_siblings,
701 &mpt2sas_port->phy_list);
702 mpt2sas_port->num_phys++;
703 }
704
705 if (!mpt2sas_port->num_phys) {
706 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
707 ioc->name, __FILE__, __LINE__, __func__);
708 goto out_fail;
709 }
710
711 port = sas_port_alloc_num(sas_node->parent_dev);
712 if ((sas_port_add(port))) {
713 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
714 ioc->name, __FILE__, __LINE__, __func__);
715 goto out_fail;
716 }
717
718 list_for_each_entry(mpt2sas_phy, &mpt2sas_port->phy_list,
719 port_siblings) {
720 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
721 dev_printk(KERN_INFO, &port->dev, "add: handle(0x%04x)"
722 ", sas_addr(0x%016llx), phy(%d)\n", handle,
723 (unsigned long long)
724 mpt2sas_port->remote_identify.sas_address,
725 mpt2sas_phy->phy_id);
726 sas_port_add_phy(port, mpt2sas_phy->phy);
727 mpt2sas_phy->phy_belongs_to_port = 1;
728 }
729
730 mpt2sas_port->port = port;
731 if (mpt2sas_port->remote_identify.device_type == SAS_END_DEVICE)
732 rphy = sas_end_device_alloc(port);
733 else
734 rphy = sas_expander_alloc(port,
735 mpt2sas_port->remote_identify.device_type);
736
737 rphy->identify = mpt2sas_port->remote_identify;
738 if ((sas_rphy_add(rphy))) {
739 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
740 ioc->name, __FILE__, __LINE__, __func__);
741 }
742 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
743 dev_printk(KERN_INFO, &rphy->dev, "add: handle(0x%04x), "
744 "sas_addr(0x%016llx)\n", handle,
745 (unsigned long long)
746 mpt2sas_port->remote_identify.sas_address);
747 mpt2sas_port->rphy = rphy;
748 spin_lock_irqsave(&ioc->sas_node_lock, flags);
749 list_add_tail(&mpt2sas_port->port_list, &sas_node->sas_port_list);
750 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
751
752 /* fill in report manufacture */
753 if (mpt2sas_port->remote_identify.device_type ==
754 MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
755 mpt2sas_port->remote_identify.device_type ==
756 MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
757 _transport_expander_report_manufacture(ioc,
758 mpt2sas_port->remote_identify.sas_address,
759 rphy_to_expander_device(rphy));
760
761 return mpt2sas_port;
762
763 out_fail:
764 list_for_each_entry_safe(mpt2sas_phy, next, &mpt2sas_port->phy_list,
765 port_siblings)
766 list_del(&mpt2sas_phy->port_siblings);
767 kfree(mpt2sas_port);
768 return NULL;
769 }
770
771 /**
772 * mpt2sas_transport_port_remove - remove port from the list
773 * @ioc: per adapter object
774 * @sas_address: sas address of attached device
775 * @sas_address_parent: sas address of parent expander or sas host
776 * Context: This function will acquire ioc->sas_node_lock.
777 *
778 * Removing object and freeing associated memory from the
779 * ioc->sas_port_list.
780 *
781 * Return nothing.
782 */
783 void
784 mpt2sas_transport_port_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address,
785 u64 sas_address_parent)
786 {
787 int i;
788 unsigned long flags;
789 struct _sas_port *mpt2sas_port, *next;
790 struct _sas_node *sas_node;
791 u8 found = 0;
792 struct _sas_phy *mpt2sas_phy, *next_phy;
793
794 spin_lock_irqsave(&ioc->sas_node_lock, flags);
795 sas_node = _transport_sas_node_find_by_sas_address(ioc,
796 sas_address_parent);
797 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
798 if (!sas_node)
799 return;
800 list_for_each_entry_safe(mpt2sas_port, next, &sas_node->sas_port_list,
801 port_list) {
802 if (mpt2sas_port->remote_identify.sas_address != sas_address)
803 continue;
804 found = 1;
805 list_del(&mpt2sas_port->port_list);
806 goto out;
807 }
808 out:
809 if (!found)
810 return;
811
812 for (i = 0; i < sas_node->num_phys; i++) {
813 if (sas_node->phy[i].remote_identify.sas_address == sas_address)
814 memset(&sas_node->phy[i].remote_identify, 0 ,
815 sizeof(struct sas_identify));
816 }
817
818 list_for_each_entry_safe(mpt2sas_phy, next_phy,
819 &mpt2sas_port->phy_list, port_siblings) {
820 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
821 dev_printk(KERN_INFO, &mpt2sas_port->port->dev,
822 "remove: sas_addr(0x%016llx), phy(%d)\n",
823 (unsigned long long)
824 mpt2sas_port->remote_identify.sas_address,
825 mpt2sas_phy->phy_id);
826 mpt2sas_phy->phy_belongs_to_port = 0;
827 sas_port_delete_phy(mpt2sas_port->port, mpt2sas_phy->phy);
828 list_del(&mpt2sas_phy->port_siblings);
829 }
830 sas_port_delete(mpt2sas_port->port);
831 kfree(mpt2sas_port);
832 }
833
834 /**
835 * mpt2sas_transport_add_host_phy - report sas_host phy to transport
836 * @ioc: per adapter object
837 * @mpt2sas_phy: mpt2sas per phy object
838 * @phy_pg0: sas phy page 0
839 * @parent_dev: parent device class object
840 *
841 * Returns 0 for success, non-zero for failure.
842 */
843 int
844 mpt2sas_transport_add_host_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
845 *mpt2sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
846 {
847 struct sas_phy *phy;
848 int phy_index = mpt2sas_phy->phy_id;
849
850
851 INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
852 phy = sas_phy_alloc(parent_dev, phy_index);
853 if (!phy) {
854 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
855 ioc->name, __FILE__, __LINE__, __func__);
856 return -1;
857 }
858 if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
859 &mpt2sas_phy->identify))) {
860 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
861 ioc->name, __FILE__, __LINE__, __func__);
862 return -1;
863 }
864 phy->identify = mpt2sas_phy->identify;
865 mpt2sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
866 if (mpt2sas_phy->attached_handle)
867 _transport_set_identify(ioc, mpt2sas_phy->attached_handle,
868 &mpt2sas_phy->remote_identify);
869 phy->identify.phy_identifier = mpt2sas_phy->phy_id;
870 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
871 phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
872 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
873 phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
874 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
875 phy_pg0.HwLinkRate >> 4);
876 phy->minimum_linkrate = _transport_convert_phy_link_rate(
877 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
878 phy->maximum_linkrate = _transport_convert_phy_link_rate(
879 phy_pg0.ProgrammedLinkRate >> 4);
880
881 if ((sas_phy_add(phy))) {
882 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
883 ioc->name, __FILE__, __LINE__, __func__);
884 sas_phy_free(phy);
885 return -1;
886 }
887 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
888 dev_printk(KERN_INFO, &phy->dev,
889 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
890 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
891 mpt2sas_phy->handle, (unsigned long long)
892 mpt2sas_phy->identify.sas_address,
893 mpt2sas_phy->attached_handle,
894 (unsigned long long)
895 mpt2sas_phy->remote_identify.sas_address);
896 mpt2sas_phy->phy = phy;
897 return 0;
898 }
899
900
901 /**
902 * mpt2sas_transport_add_expander_phy - report expander phy to transport
903 * @ioc: per adapter object
904 * @mpt2sas_phy: mpt2sas per phy object
905 * @expander_pg1: expander page 1
906 * @parent_dev: parent device class object
907 *
908 * Returns 0 for success, non-zero for failure.
909 */
910 int
911 mpt2sas_transport_add_expander_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
912 *mpt2sas_phy, Mpi2ExpanderPage1_t expander_pg1, struct device *parent_dev)
913 {
914 struct sas_phy *phy;
915 int phy_index = mpt2sas_phy->phy_id;
916
917 INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
918 phy = sas_phy_alloc(parent_dev, phy_index);
919 if (!phy) {
920 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
921 ioc->name, __FILE__, __LINE__, __func__);
922 return -1;
923 }
924 if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
925 &mpt2sas_phy->identify))) {
926 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
927 ioc->name, __FILE__, __LINE__, __func__);
928 return -1;
929 }
930 phy->identify = mpt2sas_phy->identify;
931 mpt2sas_phy->attached_handle =
932 le16_to_cpu(expander_pg1.AttachedDevHandle);
933 if (mpt2sas_phy->attached_handle)
934 _transport_set_identify(ioc, mpt2sas_phy->attached_handle,
935 &mpt2sas_phy->remote_identify);
936 phy->identify.phy_identifier = mpt2sas_phy->phy_id;
937 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
938 expander_pg1.NegotiatedLinkRate &
939 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
940 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
941 expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
942 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
943 expander_pg1.HwLinkRate >> 4);
944 phy->minimum_linkrate = _transport_convert_phy_link_rate(
945 expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
946 phy->maximum_linkrate = _transport_convert_phy_link_rate(
947 expander_pg1.ProgrammedLinkRate >> 4);
948
949 if ((sas_phy_add(phy))) {
950 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
951 ioc->name, __FILE__, __LINE__, __func__);
952 sas_phy_free(phy);
953 return -1;
954 }
955 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
956 dev_printk(KERN_INFO, &phy->dev,
957 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
958 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
959 mpt2sas_phy->handle, (unsigned long long)
960 mpt2sas_phy->identify.sas_address,
961 mpt2sas_phy->attached_handle,
962 (unsigned long long)
963 mpt2sas_phy->remote_identify.sas_address);
964 mpt2sas_phy->phy = phy;
965 return 0;
966 }
967
968 /**
969 * mpt2sas_transport_update_links - refreshing phy link changes
970 * @ioc: per adapter object
971 * @sas_address: sas address of parent expander or sas host
972 * @handle: attached device handle
973 * @phy_numberv: phy number
974 * @link_rate: new link rate
975 *
976 * Returns nothing.
977 */
978 void
979 mpt2sas_transport_update_links(struct MPT2SAS_ADAPTER *ioc,
980 u64 sas_address, u16 handle, u8 phy_number, u8 link_rate)
981 {
982 unsigned long flags;
983 struct _sas_node *sas_node;
984 struct _sas_phy *mpt2sas_phy;
985
986 if (ioc->shost_recovery || ioc->pci_error_recovery)
987 return;
988
989 spin_lock_irqsave(&ioc->sas_node_lock, flags);
990 sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
991 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
992 if (!sas_node)
993 return;
994
995 mpt2sas_phy = &sas_node->phy[phy_number];
996 mpt2sas_phy->attached_handle = handle;
997 if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5)) {
998 _transport_set_identify(ioc, handle,
999 &mpt2sas_phy->remote_identify);
1000 _transport_add_phy_to_an_existing_port(ioc, sas_node,
1001 mpt2sas_phy, mpt2sas_phy->remote_identify.sas_address);
1002 } else
1003 memset(&mpt2sas_phy->remote_identify, 0 , sizeof(struct
1004 sas_identify));
1005
1006 if (mpt2sas_phy->phy)
1007 mpt2sas_phy->phy->negotiated_linkrate =
1008 _transport_convert_phy_link_rate(link_rate);
1009
1010 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1011 dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
1012 "refresh: parent sas_addr(0x%016llx),\n"
1013 "\tlink_rate(0x%02x), phy(%d)\n"
1014 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1015 (unsigned long long)sas_address,
1016 link_rate, phy_number, handle, (unsigned long long)
1017 mpt2sas_phy->remote_identify.sas_address);
1018 }
1019
1020 static inline void *
1021 phy_to_ioc(struct sas_phy *phy)
1022 {
1023 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1024 return shost_priv(shost);
1025 }
1026
1027 static inline void *
1028 rphy_to_ioc(struct sas_rphy *rphy)
1029 {
1030 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1031 return shost_priv(shost);
1032 }
1033
1034
1035 /* report phy error log structure */
1036 struct phy_error_log_request{
1037 u8 smp_frame_type; /* 0x40 */
1038 u8 function; /* 0x11 */
1039 u8 allocated_response_length;
1040 u8 request_length; /* 02 */
1041 u8 reserved_1[5];
1042 u8 phy_identifier;
1043 u8 reserved_2[2];
1044 };
1045
1046 /* report phy error log reply structure */
1047 struct phy_error_log_reply{
1048 u8 smp_frame_type; /* 0x41 */
1049 u8 function; /* 0x11 */
1050 u8 function_result;
1051 u8 response_length;
1052 u16 expander_change_count;
1053 u8 reserved_1[3];
1054 u8 phy_identifier;
1055 u8 reserved_2[2];
1056 u32 invalid_dword;
1057 u32 running_disparity_error;
1058 u32 loss_of_dword_sync;
1059 u32 phy_reset_problem;
1060 };
1061
1062 /**
1063 * _transport_get_expander_phy_error_log - return expander counters
1064 * @ioc: per adapter object
1065 * @phy: The sas phy object
1066 *
1067 * Returns 0 for success, non-zero for failure.
1068 *
1069 */
1070 static int
1071 _transport_get_expander_phy_error_log(struct MPT2SAS_ADAPTER *ioc,
1072 struct sas_phy *phy)
1073 {
1074 Mpi2SmpPassthroughRequest_t *mpi_request;
1075 Mpi2SmpPassthroughReply_t *mpi_reply;
1076 struct phy_error_log_request *phy_error_log_request;
1077 struct phy_error_log_reply *phy_error_log_reply;
1078 int rc;
1079 u16 smid;
1080 u32 ioc_state;
1081 unsigned long timeleft;
1082 void *psge;
1083 u32 sgl_flags;
1084 u8 issue_reset = 0;
1085 void *data_out = NULL;
1086 dma_addr_t data_out_dma;
1087 u32 sz;
1088 u64 *sas_address_le;
1089 u16 wait_state_count;
1090
1091 if (ioc->shost_recovery || ioc->pci_error_recovery) {
1092 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
1093 __func__, ioc->name);
1094 return -EFAULT;
1095 }
1096
1097 mutex_lock(&ioc->transport_cmds.mutex);
1098
1099 if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
1100 printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n",
1101 ioc->name, __func__);
1102 rc = -EAGAIN;
1103 goto out;
1104 }
1105 ioc->transport_cmds.status = MPT2_CMD_PENDING;
1106
1107 wait_state_count = 0;
1108 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1109 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1110 if (wait_state_count++ == 10) {
1111 printk(MPT2SAS_ERR_FMT
1112 "%s: failed due to ioc not operational\n",
1113 ioc->name, __func__);
1114 rc = -EFAULT;
1115 goto out;
1116 }
1117 ssleep(1);
1118 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1119 printk(MPT2SAS_INFO_FMT "%s: waiting for "
1120 "operational state(count=%d)\n", ioc->name,
1121 __func__, wait_state_count);
1122 }
1123 if (wait_state_count)
1124 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
1125 ioc->name, __func__);
1126
1127 smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
1128 if (!smid) {
1129 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1130 ioc->name, __func__);
1131 rc = -EAGAIN;
1132 goto out;
1133 }
1134
1135 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1136 ioc->transport_cmds.smid = smid;
1137
1138 sz = sizeof(struct phy_error_log_request) +
1139 sizeof(struct phy_error_log_reply);
1140 data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
1141 if (!data_out) {
1142 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
1143 __LINE__, __func__);
1144 rc = -ENOMEM;
1145 mpt2sas_base_free_smid(ioc, smid);
1146 goto out;
1147 }
1148
1149 rc = -EINVAL;
1150 memset(data_out, 0, sz);
1151 phy_error_log_request = data_out;
1152 phy_error_log_request->smp_frame_type = 0x40;
1153 phy_error_log_request->function = 0x11;
1154 phy_error_log_request->request_length = 2;
1155 phy_error_log_request->allocated_response_length = 0;
1156 phy_error_log_request->phy_identifier = phy->number;
1157
1158 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1159 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1160 mpi_request->PhysicalPort = 0xFF;
1161 mpi_request->VF_ID = 0; /* TODO */
1162 mpi_request->VP_ID = 0;
1163 sas_address_le = (u64 *)&mpi_request->SASAddress;
1164 *sas_address_le = cpu_to_le64(phy->identify.sas_address);
1165 mpi_request->RequestDataLength =
1166 cpu_to_le16(sizeof(struct phy_error_log_request));
1167 psge = &mpi_request->SGL;
1168
1169 /* WRITE sgel first */
1170 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1171 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
1172 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1173 ioc->base_add_sg_single(psge, sgl_flags |
1174 sizeof(struct phy_error_log_request), data_out_dma);
1175
1176 /* incr sgel */
1177 psge += ioc->sge_size;
1178
1179 /* READ sgel last */
1180 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1181 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
1182 MPI2_SGE_FLAGS_END_OF_LIST);
1183 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1184 ioc->base_add_sg_single(psge, sgl_flags |
1185 sizeof(struct phy_error_log_reply), data_out_dma +
1186 sizeof(struct phy_error_log_request));
1187
1188 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "phy_error_log - "
1189 "send to sas_addr(0x%016llx), phy(%d)\n", ioc->name,
1190 (unsigned long long)phy->identify.sas_address, phy->number));
1191 mpt2sas_base_put_smid_default(ioc, smid);
1192 init_completion(&ioc->transport_cmds.done);
1193 timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
1194 10*HZ);
1195
1196 if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
1197 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
1198 ioc->name, __func__);
1199 _debug_dump_mf(mpi_request,
1200 sizeof(Mpi2SmpPassthroughRequest_t)/4);
1201 if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
1202 issue_reset = 1;
1203 goto issue_host_reset;
1204 }
1205
1206 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "phy_error_log - "
1207 "complete\n", ioc->name));
1208
1209 if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
1210
1211 mpi_reply = ioc->transport_cmds.reply;
1212
1213 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
1214 "phy_error_log - reply data transfer size(%d)\n",
1215 ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
1216
1217 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1218 sizeof(struct phy_error_log_reply))
1219 goto out;
1220
1221 phy_error_log_reply = data_out +
1222 sizeof(struct phy_error_log_request);
1223
1224 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
1225 "phy_error_log - function_result(%d)\n",
1226 ioc->name, phy_error_log_reply->function_result));
1227
1228 phy->invalid_dword_count =
1229 be32_to_cpu(phy_error_log_reply->invalid_dword);
1230 phy->running_disparity_error_count =
1231 be32_to_cpu(phy_error_log_reply->running_disparity_error);
1232 phy->loss_of_dword_sync_count =
1233 be32_to_cpu(phy_error_log_reply->loss_of_dword_sync);
1234 phy->phy_reset_problem_count =
1235 be32_to_cpu(phy_error_log_reply->phy_reset_problem);
1236 rc = 0;
1237 } else
1238 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
1239 "phy_error_log - no reply\n", ioc->name));
1240
1241 issue_host_reset:
1242 if (issue_reset)
1243 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1244 FORCE_BIG_HAMMER);
1245 out:
1246 ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
1247 if (data_out)
1248 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
1249
1250 mutex_unlock(&ioc->transport_cmds.mutex);
1251 return rc;
1252 }
1253
1254 /**
1255 * _transport_get_linkerrors - return phy counters for both hba and expanders
1256 * @phy: The sas phy object
1257 *
1258 * Returns 0 for success, non-zero for failure.
1259 *
1260 */
1261 static int
1262 _transport_get_linkerrors(struct sas_phy *phy)
1263 {
1264 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
1265 unsigned long flags;
1266 Mpi2ConfigReply_t mpi_reply;
1267 Mpi2SasPhyPage1_t phy_pg1;
1268
1269 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1270 if (_transport_sas_node_find_by_sas_address(ioc,
1271 phy->identify.sas_address) == NULL) {
1272 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1273 return -EINVAL;
1274 }
1275 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1276
1277 if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1278 return _transport_get_expander_phy_error_log(ioc, phy);
1279
1280 /* get hba phy error logs */
1281 if ((mpt2sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
1282 phy->number))) {
1283 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1284 ioc->name, __FILE__, __LINE__, __func__);
1285 return -ENXIO;
1286 }
1287
1288 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1289 printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
1290 "(0x%04x), loginfo(0x%08x)\n", ioc->name,
1291 phy->number, le16_to_cpu(mpi_reply.IOCStatus),
1292 le32_to_cpu(mpi_reply.IOCLogInfo));
1293
1294 phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
1295 phy->running_disparity_error_count =
1296 le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
1297 phy->loss_of_dword_sync_count =
1298 le32_to_cpu(phy_pg1.LossDwordSynchCount);
1299 phy->phy_reset_problem_count =
1300 le32_to_cpu(phy_pg1.PhyResetProblemCount);
1301 return 0;
1302 }
1303
1304 /**
1305 * _transport_get_enclosure_identifier -
1306 * @phy: The sas phy object
1307 *
1308 * Obtain the enclosure logical id for an expander.
1309 * Returns 0 for success, non-zero for failure.
1310 */
1311 static int
1312 _transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
1313 {
1314 struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1315 struct _sas_device *sas_device;
1316 unsigned long flags;
1317
1318 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1319 sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
1320 rphy->identify.sas_address);
1321 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1322
1323 if (!sas_device)
1324 return -ENXIO;
1325
1326 *identifier = sas_device->enclosure_logical_id;
1327 return 0;
1328 }
1329
1330 /**
1331 * _transport_get_bay_identifier -
1332 * @phy: The sas phy object
1333 *
1334 * Returns the slot id for a device that resides inside an enclosure.
1335 */
1336 static int
1337 _transport_get_bay_identifier(struct sas_rphy *rphy)
1338 {
1339 struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1340 struct _sas_device *sas_device;
1341 unsigned long flags;
1342
1343 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1344 sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
1345 rphy->identify.sas_address);
1346 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1347
1348 if (!sas_device)
1349 return -ENXIO;
1350
1351 return sas_device->slot;
1352 }
1353
1354 /* phy control request structure */
1355 struct phy_control_request{
1356 u8 smp_frame_type; /* 0x40 */
1357 u8 function; /* 0x91 */
1358 u8 allocated_response_length;
1359 u8 request_length; /* 0x09 */
1360 u16 expander_change_count;
1361 u8 reserved_1[3];
1362 u8 phy_identifier;
1363 u8 phy_operation;
1364 u8 reserved_2[13];
1365 u64 attached_device_name;
1366 u8 programmed_min_physical_link_rate;
1367 u8 programmed_max_physical_link_rate;
1368 u8 reserved_3[6];
1369 };
1370
1371 /* phy control reply structure */
1372 struct phy_control_reply{
1373 u8 smp_frame_type; /* 0x41 */
1374 u8 function; /* 0x11 */
1375 u8 function_result;
1376 u8 response_length;
1377 };
1378
1379 #define SMP_PHY_CONTROL_LINK_RESET (0x01)
1380 #define SMP_PHY_CONTROL_HARD_RESET (0x02)
1381 #define SMP_PHY_CONTROL_DISABLE (0x03)
1382
1383 /**
1384 * _transport_expander_phy_control - expander phy control
1385 * @ioc: per adapter object
1386 * @phy: The sas phy object
1387 *
1388 * Returns 0 for success, non-zero for failure.
1389 *
1390 */
1391 static int
1392 _transport_expander_phy_control(struct MPT2SAS_ADAPTER *ioc,
1393 struct sas_phy *phy, u8 phy_operation)
1394 {
1395 Mpi2SmpPassthroughRequest_t *mpi_request;
1396 Mpi2SmpPassthroughReply_t *mpi_reply;
1397 struct phy_control_request *phy_control_request;
1398 struct phy_control_reply *phy_control_reply;
1399 int rc;
1400 u16 smid;
1401 u32 ioc_state;
1402 unsigned long timeleft;
1403 void *psge;
1404 u32 sgl_flags;
1405 u8 issue_reset = 0;
1406 void *data_out = NULL;
1407 dma_addr_t data_out_dma;
1408 u32 sz;
1409 u64 *sas_address_le;
1410 u16 wait_state_count;
1411
1412 if (ioc->shost_recovery) {
1413 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
1414 __func__, ioc->name);
1415 return -EFAULT;
1416 }
1417
1418 mutex_lock(&ioc->transport_cmds.mutex);
1419
1420 if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
1421 printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n",
1422 ioc->name, __func__);
1423 rc = -EAGAIN;
1424 goto out;
1425 }
1426 ioc->transport_cmds.status = MPT2_CMD_PENDING;
1427
1428 wait_state_count = 0;
1429 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1430 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1431 if (wait_state_count++ == 10) {
1432 printk(MPT2SAS_ERR_FMT
1433 "%s: failed due to ioc not operational\n",
1434 ioc->name, __func__);
1435 rc = -EFAULT;
1436 goto out;
1437 }
1438 ssleep(1);
1439 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1440 printk(MPT2SAS_INFO_FMT "%s: waiting for "
1441 "operational state(count=%d)\n", ioc->name,
1442 __func__, wait_state_count);
1443 }
1444 if (wait_state_count)
1445 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
1446 ioc->name, __func__);
1447
1448 smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
1449 if (!smid) {
1450 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1451 ioc->name, __func__);
1452 rc = -EAGAIN;
1453 goto out;
1454 }
1455
1456 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1457 ioc->transport_cmds.smid = smid;
1458
1459 sz = sizeof(struct phy_control_request) +
1460 sizeof(struct phy_control_reply);
1461 data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
1462 if (!data_out) {
1463 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
1464 __LINE__, __func__);
1465 rc = -ENOMEM;
1466 mpt2sas_base_free_smid(ioc, smid);
1467 goto out;
1468 }
1469
1470 rc = -EINVAL;
1471 memset(data_out, 0, sz);
1472 phy_control_request = data_out;
1473 phy_control_request->smp_frame_type = 0x40;
1474 phy_control_request->function = 0x91;
1475 phy_control_request->request_length = 9;
1476 phy_control_request->allocated_response_length = 0;
1477 phy_control_request->phy_identifier = phy->number;
1478 phy_control_request->phy_operation = phy_operation;
1479 phy_control_request->programmed_min_physical_link_rate =
1480 phy->minimum_linkrate << 4;
1481 phy_control_request->programmed_max_physical_link_rate =
1482 phy->maximum_linkrate << 4;
1483
1484 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1485 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1486 mpi_request->PhysicalPort = 0xFF;
1487 mpi_request->VF_ID = 0; /* TODO */
1488 mpi_request->VP_ID = 0;
1489 sas_address_le = (u64 *)&mpi_request->SASAddress;
1490 *sas_address_le = cpu_to_le64(phy->identify.sas_address);
1491 mpi_request->RequestDataLength =
1492 cpu_to_le16(sizeof(struct phy_error_log_request));
1493 psge = &mpi_request->SGL;
1494
1495 /* WRITE sgel first */
1496 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1497 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
1498 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1499 ioc->base_add_sg_single(psge, sgl_flags |
1500 sizeof(struct phy_control_request), data_out_dma);
1501
1502 /* incr sgel */
1503 psge += ioc->sge_size;
1504
1505 /* READ sgel last */
1506 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1507 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
1508 MPI2_SGE_FLAGS_END_OF_LIST);
1509 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1510 ioc->base_add_sg_single(psge, sgl_flags |
1511 sizeof(struct phy_control_reply), data_out_dma +
1512 sizeof(struct phy_control_request));
1513
1514 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "phy_control - "
1515 "send to sas_addr(0x%016llx), phy(%d), opcode(%d)\n", ioc->name,
1516 (unsigned long long)phy->identify.sas_address, phy->number,
1517 phy_operation));
1518 mpt2sas_base_put_smid_default(ioc, smid);
1519 init_completion(&ioc->transport_cmds.done);
1520 timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
1521 10*HZ);
1522
1523 if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
1524 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
1525 ioc->name, __func__);
1526 _debug_dump_mf(mpi_request,
1527 sizeof(Mpi2SmpPassthroughRequest_t)/4);
1528 if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
1529 issue_reset = 1;
1530 goto issue_host_reset;
1531 }
1532
1533 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "phy_control - "
1534 "complete\n", ioc->name));
1535
1536 if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
1537
1538 mpi_reply = ioc->transport_cmds.reply;
1539
1540 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
1541 "phy_control - reply data transfer size(%d)\n",
1542 ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
1543
1544 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1545 sizeof(struct phy_control_reply))
1546 goto out;
1547
1548 phy_control_reply = data_out +
1549 sizeof(struct phy_control_request);
1550
1551 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
1552 "phy_control - function_result(%d)\n",
1553 ioc->name, phy_control_reply->function_result));
1554
1555 rc = 0;
1556 } else
1557 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
1558 "phy_control - no reply\n", ioc->name));
1559
1560 issue_host_reset:
1561 if (issue_reset)
1562 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1563 FORCE_BIG_HAMMER);
1564 out:
1565 ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
1566 if (data_out)
1567 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
1568
1569 mutex_unlock(&ioc->transport_cmds.mutex);
1570 return rc;
1571 }
1572
1573 /**
1574 * _transport_phy_reset -
1575 * @phy: The sas phy object
1576 * @hard_reset:
1577 *
1578 * Returns 0 for success, non-zero for failure.
1579 */
1580 static int
1581 _transport_phy_reset(struct sas_phy *phy, int hard_reset)
1582 {
1583 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
1584 Mpi2SasIoUnitControlReply_t mpi_reply;
1585 Mpi2SasIoUnitControlRequest_t mpi_request;
1586 unsigned long flags;
1587
1588 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1589 if (_transport_sas_node_find_by_sas_address(ioc,
1590 phy->identify.sas_address) == NULL) {
1591 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1592 return -EINVAL;
1593 }
1594 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1595
1596 /* handle expander phys */
1597 if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1598 return _transport_expander_phy_control(ioc, phy,
1599 (hard_reset == 1) ? SMP_PHY_CONTROL_HARD_RESET :
1600 SMP_PHY_CONTROL_LINK_RESET);
1601
1602 /* handle hba phys */
1603 memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlReply_t));
1604 mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
1605 mpi_request.Operation = hard_reset ?
1606 MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
1607 mpi_request.PhyNum = phy->number;
1608
1609 if ((mpt2sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
1610 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1611 ioc->name, __FILE__, __LINE__, __func__);
1612 return -ENXIO;
1613 }
1614
1615 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1616 printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
1617 "(0x%04x), loginfo(0x%08x)\n", ioc->name,
1618 phy->number, le16_to_cpu(mpi_reply.IOCStatus),
1619 le32_to_cpu(mpi_reply.IOCLogInfo));
1620
1621 return 0;
1622 }
1623
1624 /**
1625 * _transport_phy_enable - enable/disable phys
1626 * @phy: The sas phy object
1627 * @enable: enable phy when true
1628 *
1629 * Only support sas_host direct attached phys.
1630 * Returns 0 for success, non-zero for failure.
1631 */
1632 static int
1633 _transport_phy_enable(struct sas_phy *phy, int enable)
1634 {
1635 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
1636 Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1637 Mpi2ConfigReply_t mpi_reply;
1638 u16 ioc_status;
1639 u16 sz;
1640 int rc = 0;
1641 unsigned long flags;
1642
1643 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1644 if (_transport_sas_node_find_by_sas_address(ioc,
1645 phy->identify.sas_address) == NULL) {
1646 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1647 return -EINVAL;
1648 }
1649 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1650
1651 /* handle expander phys */
1652 if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1653 return _transport_expander_phy_control(ioc, phy,
1654 (enable == 1) ? SMP_PHY_CONTROL_LINK_RESET :
1655 SMP_PHY_CONTROL_DISABLE);
1656
1657 /* handle hba phys */
1658
1659 /* sas_iounit page 1 */
1660 sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1661 sizeof(Mpi2SasIOUnit1PhyData_t));
1662 sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1663 if (!sas_iounit_pg1) {
1664 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1665 ioc->name, __FILE__, __LINE__, __func__);
1666 rc = -ENOMEM;
1667 goto out;
1668 }
1669 if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1670 sas_iounit_pg1, sz))) {
1671 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1672 ioc->name, __FILE__, __LINE__, __func__);
1673 rc = -ENXIO;
1674 goto out;
1675 }
1676 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1677 MPI2_IOCSTATUS_MASK;
1678 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1679 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1680 ioc->name, __FILE__, __LINE__, __func__);
1681 rc = -EIO;
1682 goto out;
1683 }
1684
1685 if (enable)
1686 sas_iounit_pg1->PhyData[phy->number].PhyFlags
1687 &= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1688 else
1689 sas_iounit_pg1->PhyData[phy->number].PhyFlags
1690 |= MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1691
1692 mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, sz);
1693
1694 /* link reset */
1695 if (enable)
1696 _transport_phy_reset(phy, 0);
1697
1698 out:
1699 kfree(sas_iounit_pg1);
1700 return rc;
1701 }
1702
1703 /**
1704 * _transport_phy_speed - set phy min/max link rates
1705 * @phy: The sas phy object
1706 * @rates: rates defined in sas_phy_linkrates
1707 *
1708 * Only support sas_host direct attached phys.
1709 * Returns 0 for success, non-zero for failure.
1710 */
1711 static int
1712 _transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
1713 {
1714 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
1715 Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1716 Mpi2SasPhyPage0_t phy_pg0;
1717 Mpi2ConfigReply_t mpi_reply;
1718 u16 ioc_status;
1719 u16 sz;
1720 int i;
1721 int rc = 0;
1722 unsigned long flags;
1723
1724 spin_lock_irqsave(&ioc->sas_node_lock, flags);
1725 if (_transport_sas_node_find_by_sas_address(ioc,
1726 phy->identify.sas_address) == NULL) {
1727 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1728 return -EINVAL;
1729 }
1730 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1731
1732 if (!rates->minimum_linkrate)
1733 rates->minimum_linkrate = phy->minimum_linkrate;
1734 else if (rates->minimum_linkrate < phy->minimum_linkrate_hw)
1735 rates->minimum_linkrate = phy->minimum_linkrate_hw;
1736
1737 if (!rates->maximum_linkrate)
1738 rates->maximum_linkrate = phy->maximum_linkrate;
1739 else if (rates->maximum_linkrate > phy->maximum_linkrate_hw)
1740 rates->maximum_linkrate = phy->maximum_linkrate_hw;
1741
1742 /* handle expander phys */
1743 if (phy->identify.sas_address != ioc->sas_hba.sas_address) {
1744 phy->minimum_linkrate = rates->minimum_linkrate;
1745 phy->maximum_linkrate = rates->maximum_linkrate;
1746 return _transport_expander_phy_control(ioc, phy,
1747 SMP_PHY_CONTROL_LINK_RESET);
1748 }
1749
1750 /* handle hba phys */
1751
1752 /* sas_iounit page 1 */
1753 sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1754 sizeof(Mpi2SasIOUnit1PhyData_t));
1755 sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1756 if (!sas_iounit_pg1) {
1757 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1758 ioc->name, __FILE__, __LINE__, __func__);
1759 rc = -ENOMEM;
1760 goto out;
1761 }
1762 if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1763 sas_iounit_pg1, sz))) {
1764 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1765 ioc->name, __FILE__, __LINE__, __func__);
1766 rc = -ENXIO;
1767 goto out;
1768 }
1769 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1770 MPI2_IOCSTATUS_MASK;
1771 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1772 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1773 ioc->name, __FILE__, __LINE__, __func__);
1774 rc = -EIO;
1775 goto out;
1776 }
1777
1778 for (i = 0; i < ioc->sas_hba.num_phys; i++) {
1779 if (phy->number != i) {
1780 sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1781 (ioc->sas_hba.phy[i].phy->minimum_linkrate +
1782 (ioc->sas_hba.phy[i].phy->maximum_linkrate << 4));
1783 } else {
1784 sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1785 (rates->minimum_linkrate +
1786 (rates->maximum_linkrate << 4));
1787 }
1788 }
1789
1790 if (mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
1791 sz)) {
1792 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1793 ioc->name, __FILE__, __LINE__, __func__);
1794 rc = -ENXIO;
1795 goto out;
1796 }
1797
1798 /* link reset */
1799 _transport_phy_reset(phy, 0);
1800
1801 /* read phy page 0, then update the rates in the sas transport phy */
1802 if (!mpt2sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
1803 phy->number)) {
1804 phy->minimum_linkrate = _transport_convert_phy_link_rate(
1805 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1806 phy->maximum_linkrate = _transport_convert_phy_link_rate(
1807 phy_pg0.ProgrammedLinkRate >> 4);
1808 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1809 phy_pg0.NegotiatedLinkRate &
1810 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1811 }
1812
1813 out:
1814 kfree(sas_iounit_pg1);
1815 return rc;
1816 }
1817
1818
1819 /**
1820 * _transport_smp_handler - transport portal for smp passthru
1821 * @shost: shost object
1822 * @rphy: sas transport rphy object
1823 * @req:
1824 *
1825 * This used primarily for smp_utils.
1826 * Example:
1827 * smp_rep_general /sys/class/bsg/expander-5:0
1828 */
1829 static int
1830 _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
1831 struct request *req)
1832 {
1833 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
1834 Mpi2SmpPassthroughRequest_t *mpi_request;
1835 Mpi2SmpPassthroughReply_t *mpi_reply;
1836 int rc;
1837 u16 smid;
1838 u32 ioc_state;
1839 unsigned long timeleft;
1840 void *psge;
1841 u32 sgl_flags;
1842 u8 issue_reset = 0;
1843 dma_addr_t dma_addr_in = 0;
1844 dma_addr_t dma_addr_out = 0;
1845 u16 wait_state_count;
1846 struct request *rsp = req->next_rq;
1847
1848 if (!rsp) {
1849 printk(MPT2SAS_ERR_FMT "%s: the smp response space is "
1850 "missing\n", ioc->name, __func__);
1851 return -EINVAL;
1852 }
1853
1854 /* do we need to support multiple segments? */
1855 if (req->bio->bi_vcnt > 1 || rsp->bio->bi_vcnt > 1) {
1856 printk(MPT2SAS_ERR_FMT "%s: multiple segments req %u %u, "
1857 "rsp %u %u\n", ioc->name, __func__, req->bio->bi_vcnt,
1858 blk_rq_bytes(req), rsp->bio->bi_vcnt, blk_rq_bytes(rsp));
1859 return -EINVAL;
1860 }
1861
1862 if (ioc->shost_recovery) {
1863 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
1864 __func__, ioc->name);
1865 return -EFAULT;
1866 }
1867
1868 rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
1869 if (rc)
1870 return rc;
1871
1872 if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
1873 printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n", ioc->name,
1874 __func__);
1875 rc = -EAGAIN;
1876 goto out;
1877 }
1878 ioc->transport_cmds.status = MPT2_CMD_PENDING;
1879
1880 wait_state_count = 0;
1881 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1882 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1883 if (wait_state_count++ == 10) {
1884 printk(MPT2SAS_ERR_FMT
1885 "%s: failed due to ioc not operational\n",
1886 ioc->name, __func__);
1887 rc = -EFAULT;
1888 goto out;
1889 }
1890 ssleep(1);
1891 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1892 printk(MPT2SAS_INFO_FMT "%s: waiting for "
1893 "operational state(count=%d)\n", ioc->name,
1894 __func__, wait_state_count);
1895 }
1896 if (wait_state_count)
1897 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
1898 ioc->name, __func__);
1899
1900 smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
1901 if (!smid) {
1902 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1903 ioc->name, __func__);
1904 rc = -EAGAIN;
1905 goto out;
1906 }
1907
1908 rc = 0;
1909 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1910 ioc->transport_cmds.smid = smid;
1911
1912 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1913 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1914 mpi_request->PhysicalPort = 0xFF;
1915 mpi_request->VF_ID = 0; /* TODO */
1916 mpi_request->VP_ID = 0;
1917 *((u64 *)&mpi_request->SASAddress) = (rphy) ?
1918 cpu_to_le64(rphy->identify.sas_address) :
1919 cpu_to_le64(ioc->sas_hba.sas_address);
1920 mpi_request->RequestDataLength = cpu_to_le16(blk_rq_bytes(req) - 4);
1921 psge = &mpi_request->SGL;
1922
1923 /* WRITE sgel first */
1924 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1925 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
1926 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1927 dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio),
1928 blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL);
1929 if (!dma_addr_out) {
1930 mpt2sas_base_free_smid(ioc, smid);
1931 goto unmap;
1932 }
1933
1934 ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(req) - 4),
1935 dma_addr_out);
1936
1937 /* incr sgel */
1938 psge += ioc->sge_size;
1939
1940 /* READ sgel last */
1941 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1942 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
1943 MPI2_SGE_FLAGS_END_OF_LIST);
1944 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1945 dma_addr_in = pci_map_single(ioc->pdev, bio_data(rsp->bio),
1946 blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL);
1947 if (!dma_addr_in) {
1948 mpt2sas_base_free_smid(ioc, smid);
1949 goto unmap;
1950 }
1951
1952 ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(rsp) + 4),
1953 dma_addr_in);
1954
1955 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "%s - "
1956 "sending smp request\n", ioc->name, __func__));
1957
1958 mpt2sas_base_put_smid_default(ioc, smid);
1959 init_completion(&ioc->transport_cmds.done);
1960 timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
1961 10*HZ);
1962
1963 if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
1964 printk(MPT2SAS_ERR_FMT "%s : timeout\n",
1965 __func__, ioc->name);
1966 _debug_dump_mf(mpi_request,
1967 sizeof(Mpi2SmpPassthroughRequest_t)/4);
1968 if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
1969 issue_reset = 1;
1970 goto issue_host_reset;
1971 }
1972
1973 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "%s - "
1974 "complete\n", ioc->name, __func__));
1975
1976 if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
1977
1978 mpi_reply = ioc->transport_cmds.reply;
1979
1980 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
1981 "%s - reply data transfer size(%d)\n",
1982 ioc->name, __func__,
1983 le16_to_cpu(mpi_reply->ResponseDataLength)));
1984
1985 memcpy(req->sense, mpi_reply, sizeof(*mpi_reply));
1986 req->sense_len = sizeof(*mpi_reply);
1987 req->resid_len = 0;
1988 rsp->resid_len -=
1989 le16_to_cpu(mpi_reply->ResponseDataLength);
1990 } else {
1991 dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
1992 "%s - no reply\n", ioc->name, __func__));
1993 rc = -ENXIO;
1994 }
1995
1996 issue_host_reset:
1997 if (issue_reset) {
1998 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1999 FORCE_BIG_HAMMER);
2000 rc = -ETIMEDOUT;
2001 }
2002
2003 unmap:
2004 if (dma_addr_out)
2005 pci_unmap_single(ioc->pdev, dma_addr_out, blk_rq_bytes(req),
2006 PCI_DMA_BIDIRECTIONAL);
2007 if (dma_addr_in)
2008 pci_unmap_single(ioc->pdev, dma_addr_in, blk_rq_bytes(rsp),
2009 PCI_DMA_BIDIRECTIONAL);
2010
2011 out:
2012 ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
2013 mutex_unlock(&ioc->transport_cmds.mutex);
2014 return rc;
2015 }
2016
2017 struct sas_function_template mpt2sas_transport_functions = {
2018 .get_linkerrors = _transport_get_linkerrors,
2019 .get_enclosure_identifier = _transport_get_enclosure_identifier,
2020 .get_bay_identifier = _transport_get_bay_identifier,
2021 .phy_reset = _transport_phy_reset,
2022 .phy_enable = _transport_phy_enable,
2023 .set_phy_speed = _transport_phy_speed,
2024 .smp_handler = _transport_smp_handler,
2025 };
2026
2027 struct scsi_transport_template *mpt2sas_transport_template;