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[SCSI] mpt2sas: Fix to use sas device list instead of enclosure list for _transpor_ge...
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / mpt2sas / mpt2sas_transport.c
blob778e149f9637ec3c016fbf2da4d9a3ba319a1586
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) {
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) {
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_DEBUG_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_DEBUG_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_DEBUG_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_DEBUG_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 /**
470 * _transport_delete_duplicate_port - (see below description)
471 * @ioc: per adapter object
472 * @sas_node: sas node object (either expander or sas host)
473 * @sas_address: sas address of device being added
474 * @phy_num: phy number
475 *
476 * This function is called when attempting to add a new port that is claiming
477 * the same phy resources already in use by another port. If we don't release
478 * the claimed phy resources, the sas transport layer will hang from the BUG
479 * in sas_port_add_phy.
480 *
481 * The reason we would hit this issue is becuase someone is changing the
482 * sas address of a device on the fly, meanwhile controller firmware sends
483 * EVENTs out of order when removing the previous instance of the device.
484 */
485 static void
486 _transport_delete_duplicate_port(struct MPT2SAS_ADAPTER *ioc,
487 struct _sas_node *sas_node, u64 sas_address, int phy_num)
488 {
489 struct _sas_port *mpt2sas_port, *mpt2sas_port_duplicate;
490 struct _sas_phy *mpt2sas_phy;
491
492 printk(MPT2SAS_ERR_FMT "new device located at sas_addr(0x%016llx), "
493 "phy_id(%d)\n", ioc->name, (unsigned long long)sas_address,
494 phy_num);
495
496 mpt2sas_port_duplicate = NULL;
497 list_for_each_entry(mpt2sas_port, &sas_node->sas_port_list, port_list) {
498 dev_printk(KERN_ERR, &mpt2sas_port->port->dev,
499 "existing device at sas_addr(0x%016llx), num_phys(%d)\n",
500 (unsigned long long)
501 mpt2sas_port->remote_identify.sas_address,
502 mpt2sas_port->num_phys);
503 list_for_each_entry(mpt2sas_phy, &mpt2sas_port->phy_list,
504 port_siblings) {
505 dev_printk(KERN_ERR, &mpt2sas_phy->phy->dev,
506 "phy_number(%d)\n", mpt2sas_phy->phy_id);
507 if (mpt2sas_phy->phy_id == phy_num)
508 mpt2sas_port_duplicate = mpt2sas_port;
509 }
510 }
511
512 if (!mpt2sas_port_duplicate)
513 return;
514
515 dev_printk(KERN_ERR, &mpt2sas_port_duplicate->port->dev,
516 "deleting duplicate device at sas_addr(0x%016llx), phy(%d)!!!!\n",
517 (unsigned long long)
518 mpt2sas_port_duplicate->remote_identify.sas_address, phy_num);
519 ioc->logging_level |= MPT_DEBUG_TRANSPORT;
520 mpt2sas_transport_port_remove(ioc,
521 mpt2sas_port_duplicate->remote_identify.sas_address,
522 sas_node->sas_address);
523 ioc->logging_level &= ~MPT_DEBUG_TRANSPORT;
524 }
525
526 /**
527 * _transport_sanity_check - sanity check when adding a new port
528 * @ioc: per adapter object
529 * @sas_node: sas node object (either expander or sas host)
530 * @sas_address: sas address of device being added
531 *
532 * See the explanation above from _transport_delete_duplicate_port
533 */
534 static void
535 _transport_sanity_check(struct MPT2SAS_ADAPTER *ioc, struct _sas_node *sas_node,
536 u64 sas_address)
537 {
538 int i;
539
540 for (i = 0; i < sas_node->num_phys; i++)
541 if (sas_node->phy[i].remote_identify.sas_address == sas_address)
542 if (sas_node->phy[i].phy_belongs_to_port)
543 _transport_delete_duplicate_port(ioc, sas_node,
544 sas_address, i);
545 }
546
547 /**
548 * mpt2sas_transport_port_add - insert port to the list
549 * @ioc: per adapter object
550 * @handle: handle of attached device
551 * @sas_address: sas address of parent expander or sas host
552 * Context: This function will acquire ioc->sas_node_lock.
553 *
554 * Adding new port object to the sas_node->sas_port_list.
555 *
556 * Returns mpt2sas_port.
557 */
558 struct _sas_port *
559 mpt2sas_transport_port_add(struct MPT2SAS_ADAPTER *ioc, u16 handle,
560 u64 sas_address)
561 {
562 struct _sas_phy *mpt2sas_phy, *next;
563 struct _sas_port *mpt2sas_port;
564 unsigned long flags;
565 struct _sas_node *sas_node;
566 struct sas_rphy *rphy;
567 int i;
568 struct sas_port *port;
569
570 mpt2sas_port = kzalloc(sizeof(struct _sas_port),
571 GFP_KERNEL);
572 if (!mpt2sas_port) {
573 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
574 ioc->name, __FILE__, __LINE__, __func__);
575 return NULL;
576 }
577
578 INIT_LIST_HEAD(&mpt2sas_port->port_list);
579 INIT_LIST_HEAD(&mpt2sas_port->phy_list);
580 spin_lock_irqsave(&ioc->sas_node_lock, flags);
581 sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
582 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
583
584 if (!sas_node) {
585 printk(MPT2SAS_ERR_FMT "%s: Could not find "
586 "parent sas_address(0x%016llx)!\n", ioc->name,
587 __func__, (unsigned long long)sas_address);
588 goto out_fail;
589 }
590
591 if ((_transport_set_identify(ioc, handle,
592 &mpt2sas_port->remote_identify))) {
593 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
594 ioc->name, __FILE__, __LINE__, __func__);
595 goto out_fail;
596 }
597
598 if (mpt2sas_port->remote_identify.device_type == SAS_PHY_UNUSED) {
599 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
600 ioc->name, __FILE__, __LINE__, __func__);
601 goto out_fail;
602 }
603
604 _transport_sanity_check(ioc, sas_node,
605 mpt2sas_port->remote_identify.sas_address);
606
607 for (i = 0; i < sas_node->num_phys; i++) {
608 if (sas_node->phy[i].remote_identify.sas_address !=
609 mpt2sas_port->remote_identify.sas_address)
610 continue;
611 list_add_tail(&sas_node->phy[i].port_siblings,
612 &mpt2sas_port->phy_list);
613 mpt2sas_port->num_phys++;
614 }
615
616 if (!mpt2sas_port->num_phys) {
617 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
618 ioc->name, __FILE__, __LINE__, __func__);
619 goto out_fail;
620 }
621
622 port = sas_port_alloc_num(sas_node->parent_dev);
623 if ((sas_port_add(port))) {
624 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
625 ioc->name, __FILE__, __LINE__, __func__);
626 goto out_fail;
627 }
628
629 list_for_each_entry(mpt2sas_phy, &mpt2sas_port->phy_list,
630 port_siblings) {
631 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
632 dev_printk(KERN_INFO, &port->dev, "add: handle(0x%04x)"
633 ", sas_addr(0x%016llx), phy(%d)\n", handle,
634 (unsigned long long)
635 mpt2sas_port->remote_identify.sas_address,
636 mpt2sas_phy->phy_id);
637 sas_port_add_phy(port, mpt2sas_phy->phy);
638 mpt2sas_phy->phy_belongs_to_port = 1;
639 }
640
641 mpt2sas_port->port = port;
642 if (mpt2sas_port->remote_identify.device_type == SAS_END_DEVICE)
643 rphy = sas_end_device_alloc(port);
644 else
645 rphy = sas_expander_alloc(port,
646 mpt2sas_port->remote_identify.device_type);
647
648 rphy->identify = mpt2sas_port->remote_identify;
649 if ((sas_rphy_add(rphy))) {
650 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
651 ioc->name, __FILE__, __LINE__, __func__);
652 }
653 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
654 dev_printk(KERN_INFO, &rphy->dev, "add: handle(0x%04x), "
655 "sas_addr(0x%016llx)\n", handle,
656 (unsigned long long)
657 mpt2sas_port->remote_identify.sas_address);
658 mpt2sas_port->rphy = rphy;
659 spin_lock_irqsave(&ioc->sas_node_lock, flags);
660 list_add_tail(&mpt2sas_port->port_list, &sas_node->sas_port_list);
661 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
662
663 /* fill in report manufacture */
664 if (mpt2sas_port->remote_identify.device_type ==
665 MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
666 mpt2sas_port->remote_identify.device_type ==
667 MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
668 _transport_expander_report_manufacture(ioc,
669 mpt2sas_port->remote_identify.sas_address,
670 rphy_to_expander_device(rphy));
671
672 return mpt2sas_port;
673
674 out_fail:
675 list_for_each_entry_safe(mpt2sas_phy, next, &mpt2sas_port->phy_list,
676 port_siblings)
677 list_del(&mpt2sas_phy->port_siblings);
678 kfree(mpt2sas_port);
679 return NULL;
680 }
681
682 /**
683 * mpt2sas_transport_port_remove - remove port from the list
684 * @ioc: per adapter object
685 * @sas_address: sas address of attached device
686 * @sas_address_parent: sas address of parent expander or sas host
687 * Context: This function will acquire ioc->sas_node_lock.
688 *
689 * Removing object and freeing associated memory from the
690 * ioc->sas_port_list.
691 *
692 * Return nothing.
693 */
694 void
695 mpt2sas_transport_port_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address,
696 u64 sas_address_parent)
697 {
698 int i;
699 unsigned long flags;
700 struct _sas_port *mpt2sas_port, *next;
701 struct _sas_node *sas_node;
702 u8 found = 0;
703 struct _sas_phy *mpt2sas_phy, *next_phy;
704
705 spin_lock_irqsave(&ioc->sas_node_lock, flags);
706 sas_node = _transport_sas_node_find_by_sas_address(ioc,
707 sas_address_parent);
708 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
709 if (!sas_node)
710 return;
711 list_for_each_entry_safe(mpt2sas_port, next, &sas_node->sas_port_list,
712 port_list) {
713 if (mpt2sas_port->remote_identify.sas_address != sas_address)
714 continue;
715 found = 1;
716 list_del(&mpt2sas_port->port_list);
717 goto out;
718 }
719 out:
720 if (!found)
721 return;
722
723 for (i = 0; i < sas_node->num_phys; i++) {
724 if (sas_node->phy[i].remote_identify.sas_address == sas_address)
725 memset(&sas_node->phy[i].remote_identify, 0 ,
726 sizeof(struct sas_identify));
727 }
728
729 list_for_each_entry_safe(mpt2sas_phy, next_phy,
730 &mpt2sas_port->phy_list, port_siblings) {
731 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
732 dev_printk(KERN_INFO, &mpt2sas_port->port->dev,
733 "remove: sas_addr(0x%016llx), phy(%d)\n",
734 (unsigned long long)
735 mpt2sas_port->remote_identify.sas_address,
736 mpt2sas_phy->phy_id);
737 mpt2sas_phy->phy_belongs_to_port = 0;
738 sas_port_delete_phy(mpt2sas_port->port, mpt2sas_phy->phy);
739 list_del(&mpt2sas_phy->port_siblings);
740 }
741 sas_port_delete(mpt2sas_port->port);
742 kfree(mpt2sas_port);
743 }
744
745 /**
746 * mpt2sas_transport_add_host_phy - report sas_host phy to transport
747 * @ioc: per adapter object
748 * @mpt2sas_phy: mpt2sas per phy object
749 * @phy_pg0: sas phy page 0
750 * @parent_dev: parent device class object
751 *
752 * Returns 0 for success, non-zero for failure.
753 */
754 int
755 mpt2sas_transport_add_host_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
756 *mpt2sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
757 {
758 struct sas_phy *phy;
759 int phy_index = mpt2sas_phy->phy_id;
760
761
762 INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
763 phy = sas_phy_alloc(parent_dev, phy_index);
764 if (!phy) {
765 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
766 ioc->name, __FILE__, __LINE__, __func__);
767 return -1;
768 }
769 if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
770 &mpt2sas_phy->identify))) {
771 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
772 ioc->name, __FILE__, __LINE__, __func__);
773 return -1;
774 }
775 phy->identify = mpt2sas_phy->identify;
776 mpt2sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
777 if (mpt2sas_phy->attached_handle)
778 _transport_set_identify(ioc, mpt2sas_phy->attached_handle,
779 &mpt2sas_phy->remote_identify);
780 phy->identify.phy_identifier = mpt2sas_phy->phy_id;
781 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
782 phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
783 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
784 phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
785 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
786 phy_pg0.HwLinkRate >> 4);
787 phy->minimum_linkrate = _transport_convert_phy_link_rate(
788 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
789 phy->maximum_linkrate = _transport_convert_phy_link_rate(
790 phy_pg0.ProgrammedLinkRate >> 4);
791
792 if ((sas_phy_add(phy))) {
793 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
794 ioc->name, __FILE__, __LINE__, __func__);
795 sas_phy_free(phy);
796 return -1;
797 }
798 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
799 dev_printk(KERN_INFO, &phy->dev,
800 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
801 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
802 mpt2sas_phy->handle, (unsigned long long)
803 mpt2sas_phy->identify.sas_address,
804 mpt2sas_phy->attached_handle,
805 (unsigned long long)
806 mpt2sas_phy->remote_identify.sas_address);
807 mpt2sas_phy->phy = phy;
808 return 0;
809 }
810
811
812 /**
813 * mpt2sas_transport_add_expander_phy - report expander phy to transport
814 * @ioc: per adapter object
815 * @mpt2sas_phy: mpt2sas per phy object
816 * @expander_pg1: expander page 1
817 * @parent_dev: parent device class object
818 *
819 * Returns 0 for success, non-zero for failure.
820 */
821 int
822 mpt2sas_transport_add_expander_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
823 *mpt2sas_phy, Mpi2ExpanderPage1_t expander_pg1, struct device *parent_dev)
824 {
825 struct sas_phy *phy;
826 int phy_index = mpt2sas_phy->phy_id;
827
828 INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
829 phy = sas_phy_alloc(parent_dev, phy_index);
830 if (!phy) {
831 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
832 ioc->name, __FILE__, __LINE__, __func__);
833 return -1;
834 }
835 if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
836 &mpt2sas_phy->identify))) {
837 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
838 ioc->name, __FILE__, __LINE__, __func__);
839 return -1;
840 }
841 phy->identify = mpt2sas_phy->identify;
842 mpt2sas_phy->attached_handle =
843 le16_to_cpu(expander_pg1.AttachedDevHandle);
844 if (mpt2sas_phy->attached_handle)
845 _transport_set_identify(ioc, mpt2sas_phy->attached_handle,
846 &mpt2sas_phy->remote_identify);
847 phy->identify.phy_identifier = mpt2sas_phy->phy_id;
848 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
849 expander_pg1.NegotiatedLinkRate &
850 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
851 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
852 expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
853 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
854 expander_pg1.HwLinkRate >> 4);
855 phy->minimum_linkrate = _transport_convert_phy_link_rate(
856 expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
857 phy->maximum_linkrate = _transport_convert_phy_link_rate(
858 expander_pg1.ProgrammedLinkRate >> 4);
859
860 if ((sas_phy_add(phy))) {
861 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
862 ioc->name, __FILE__, __LINE__, __func__);
863 sas_phy_free(phy);
864 return -1;
865 }
866 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
867 dev_printk(KERN_INFO, &phy->dev,
868 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
869 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
870 mpt2sas_phy->handle, (unsigned long long)
871 mpt2sas_phy->identify.sas_address,
872 mpt2sas_phy->attached_handle,
873 (unsigned long long)
874 mpt2sas_phy->remote_identify.sas_address);
875 mpt2sas_phy->phy = phy;
876 return 0;
877 }
878
879 /**
880 * mpt2sas_transport_update_links - refreshing phy link changes
881 * @ioc: per adapter object
882 * @sas_address: sas address of parent expander or sas host
883 * @handle: attached device handle
884 * @phy_numberv: phy number
885 * @link_rate: new link rate
886 *
887 * Returns nothing.
888 */
889 void
890 mpt2sas_transport_update_links(struct MPT2SAS_ADAPTER *ioc,
891 u64 sas_address, u16 handle, u8 phy_number, u8 link_rate)
892 {
893 unsigned long flags;
894 struct _sas_node *sas_node;
895 struct _sas_phy *mpt2sas_phy;
896
897 if (ioc->shost_recovery)
898 return;
899
900 spin_lock_irqsave(&ioc->sas_node_lock, flags);
901 sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
902 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
903 if (!sas_node)
904 return;
905
906 mpt2sas_phy = &sas_node->phy[phy_number];
907 mpt2sas_phy->attached_handle = handle;
908 if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5))
909 _transport_set_identify(ioc, handle,
910 &mpt2sas_phy->remote_identify);
911 else
912 memset(&mpt2sas_phy->remote_identify, 0 , sizeof(struct
913 sas_identify));
914
915 if (mpt2sas_phy->phy)
916 mpt2sas_phy->phy->negotiated_linkrate =
917 _transport_convert_phy_link_rate(link_rate);
918
919 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
920 dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
921 "refresh: parent sas_addr(0x%016llx),\n"
922 "\tlink_rate(0x%02x), phy(%d)\n"
923 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
924 (unsigned long long)sas_address,
925 link_rate, phy_number, handle, (unsigned long long)
926 mpt2sas_phy->remote_identify.sas_address);
927 }
928
929 static inline void *
930 phy_to_ioc(struct sas_phy *phy)
931 {
932 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
933 return shost_priv(shost);
934 }
935
936 static inline void *
937 rphy_to_ioc(struct sas_rphy *rphy)
938 {
939 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
940 return shost_priv(shost);
941 }
942
943 static struct _sas_phy *
944 _transport_find_local_phy(struct MPT2SAS_ADAPTER *ioc, struct sas_phy *phy)
945 {
946 int i;
947
948 for (i = 0; i < ioc->sas_hba.num_phys; i++)
949 if (ioc->sas_hba.phy[i].phy == phy)
950 return(&ioc->sas_hba.phy[i]);
951 return NULL;
952 }
953
954 /**
955 * _transport_get_linkerrors -
956 * @phy: The sas phy object
957 *
958 * Only support sas_host direct attached phys.
959 * Returns 0 for success, non-zero for failure.
960 *
961 */
962 static int
963 _transport_get_linkerrors(struct sas_phy *phy)
964 {
965 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
966 struct _sas_phy *mpt2sas_phy;
967 Mpi2ConfigReply_t mpi_reply;
968 Mpi2SasPhyPage1_t phy_pg1;
969
970 mpt2sas_phy = _transport_find_local_phy(ioc, phy);
971
972 if (!mpt2sas_phy) /* this phy not on sas_host */
973 return -EINVAL;
974
975 if ((mpt2sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
976 mpt2sas_phy->phy_id))) {
977 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
978 ioc->name, __FILE__, __LINE__, __func__);
979 return -ENXIO;
980 }
981
982 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
983 printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
984 "(0x%04x), loginfo(0x%08x)\n", ioc->name,
985 mpt2sas_phy->phy_id,
986 le16_to_cpu(mpi_reply.IOCStatus),
987 le32_to_cpu(mpi_reply.IOCLogInfo));
988
989 phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
990 phy->running_disparity_error_count =
991 le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
992 phy->loss_of_dword_sync_count =
993 le32_to_cpu(phy_pg1.LossDwordSynchCount);
994 phy->phy_reset_problem_count =
995 le32_to_cpu(phy_pg1.PhyResetProblemCount);
996 return 0;
997 }
998
999 /**
1000 * _transport_get_enclosure_identifier -
1001 * @phy: The sas phy object
1002 *
1003 * Obtain the enclosure logical id for an expander.
1004 * Returns 0 for success, non-zero for failure.
1005 */
1006 static int
1007 _transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
1008 {
1009 struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1010 struct _sas_device *sas_device;
1011 unsigned long flags;
1012
1013 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1014 sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
1015 rphy->identify.sas_address);
1016 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1017
1018 if (!sas_device)
1019 return -ENXIO;
1020
1021 *identifier = sas_device->enclosure_logical_id;
1022 return 0;
1023 }
1024
1025 /**
1026 * _transport_get_bay_identifier -
1027 * @phy: The sas phy object
1028 *
1029 * Returns the slot id for a device that resides inside an enclosure.
1030 */
1031 static int
1032 _transport_get_bay_identifier(struct sas_rphy *rphy)
1033 {
1034 struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1035 struct _sas_device *sas_device;
1036 unsigned long flags;
1037
1038 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1039 sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
1040 rphy->identify.sas_address);
1041 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1042
1043 if (!sas_device)
1044 return -ENXIO;
1045
1046 return sas_device->slot;
1047 }
1048
1049 /**
1050 * _transport_phy_reset -
1051 * @phy: The sas phy object
1052 * @hard_reset:
1053 *
1054 * Only support sas_host direct attached phys.
1055 * Returns 0 for success, non-zero for failure.
1056 */
1057 static int
1058 _transport_phy_reset(struct sas_phy *phy, int hard_reset)
1059 {
1060 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
1061 struct _sas_phy *mpt2sas_phy;
1062 Mpi2SasIoUnitControlReply_t mpi_reply;
1063 Mpi2SasIoUnitControlRequest_t mpi_request;
1064
1065 mpt2sas_phy = _transport_find_local_phy(ioc, phy);
1066
1067 if (!mpt2sas_phy) /* this phy not on sas_host */
1068 return -EINVAL;
1069
1070 memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlReply_t));
1071 mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
1072 mpi_request.Operation = hard_reset ?
1073 MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
1074 mpi_request.PhyNum = mpt2sas_phy->phy_id;
1075
1076 if ((mpt2sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
1077 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1078 ioc->name, __FILE__, __LINE__, __func__);
1079 return -ENXIO;
1080 }
1081
1082 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1083 printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
1084 "(0x%04x), loginfo(0x%08x)\n", ioc->name,
1085 mpt2sas_phy->phy_id,
1086 le16_to_cpu(mpi_reply.IOCStatus),
1087 le32_to_cpu(mpi_reply.IOCLogInfo));
1088
1089 return 0;
1090 }
1091
1092 /**
1093 * _transport_phy_enable - enable/disable phys
1094 * @phy: The sas phy object
1095 * @enable: enable phy when true
1096 *
1097 * Only support sas_host direct attached phys.
1098 * Returns 0 for success, non-zero for failure.
1099 */
1100 static int
1101 _transport_phy_enable(struct sas_phy *phy, int enable)
1102 {
1103 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
1104 struct _sas_phy *mpt2sas_phy;
1105 Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1106 Mpi2ConfigReply_t mpi_reply;
1107 u16 ioc_status;
1108 u16 sz;
1109 int rc = 0;
1110
1111 mpt2sas_phy = _transport_find_local_phy(ioc, phy);
1112
1113 if (!mpt2sas_phy) /* this phy not on sas_host */
1114 return -EINVAL;
1115
1116 /* sas_iounit page 1 */
1117 sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1118 sizeof(Mpi2SasIOUnit1PhyData_t));
1119 sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1120 if (!sas_iounit_pg1) {
1121 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1122 ioc->name, __FILE__, __LINE__, __func__);
1123 rc = -ENOMEM;
1124 goto out;
1125 }
1126 if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1127 sas_iounit_pg1, sz))) {
1128 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1129 ioc->name, __FILE__, __LINE__, __func__);
1130 rc = -ENXIO;
1131 goto out;
1132 }
1133 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1134 MPI2_IOCSTATUS_MASK;
1135 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1136 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1137 ioc->name, __FILE__, __LINE__, __func__);
1138 rc = -EIO;
1139 goto out;
1140 }
1141
1142 if (enable)
1143 sas_iounit_pg1->PhyData[mpt2sas_phy->phy_id].PhyFlags
1144 &= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1145 else
1146 sas_iounit_pg1->PhyData[mpt2sas_phy->phy_id].PhyFlags
1147 |= MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1148
1149 mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, sz);
1150
1151 out:
1152 kfree(sas_iounit_pg1);
1153 return rc;
1154 }
1155
1156 /**
1157 * _transport_phy_speed - set phy min/max link rates
1158 * @phy: The sas phy object
1159 * @rates: rates defined in sas_phy_linkrates
1160 *
1161 * Only support sas_host direct attached phys.
1162 * Returns 0 for success, non-zero for failure.
1163 */
1164 static int
1165 _transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
1166 {
1167 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
1168 struct _sas_phy *mpt2sas_phy;
1169 Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1170 Mpi2SasPhyPage0_t phy_pg0;
1171 Mpi2ConfigReply_t mpi_reply;
1172 u16 ioc_status;
1173 u16 sz;
1174 int i;
1175 int rc = 0;
1176
1177 mpt2sas_phy = _transport_find_local_phy(ioc, phy);
1178
1179 if (!mpt2sas_phy) /* this phy not on sas_host */
1180 return -EINVAL;
1181
1182 if (!rates->minimum_linkrate)
1183 rates->minimum_linkrate = phy->minimum_linkrate;
1184 else if (rates->minimum_linkrate < phy->minimum_linkrate_hw)
1185 rates->minimum_linkrate = phy->minimum_linkrate_hw;
1186
1187 if (!rates->maximum_linkrate)
1188 rates->maximum_linkrate = phy->maximum_linkrate;
1189 else if (rates->maximum_linkrate > phy->maximum_linkrate_hw)
1190 rates->maximum_linkrate = phy->maximum_linkrate_hw;
1191
1192 /* sas_iounit page 1 */
1193 sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1194 sizeof(Mpi2SasIOUnit1PhyData_t));
1195 sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1196 if (!sas_iounit_pg1) {
1197 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1198 ioc->name, __FILE__, __LINE__, __func__);
1199 rc = -ENOMEM;
1200 goto out;
1201 }
1202 if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1203 sas_iounit_pg1, sz))) {
1204 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1205 ioc->name, __FILE__, __LINE__, __func__);
1206 rc = -ENXIO;
1207 goto out;
1208 }
1209 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1210 MPI2_IOCSTATUS_MASK;
1211 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1212 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1213 ioc->name, __FILE__, __LINE__, __func__);
1214 rc = -EIO;
1215 goto out;
1216 }
1217
1218 for (i = 0; i < ioc->sas_hba.num_phys; i++) {
1219 if (mpt2sas_phy->phy_id != i) {
1220 sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1221 (ioc->sas_hba.phy[i].phy->minimum_linkrate +
1222 (ioc->sas_hba.phy[i].phy->maximum_linkrate << 4));
1223 } else {
1224 sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1225 (rates->minimum_linkrate +
1226 (rates->maximum_linkrate << 4));
1227 }
1228 }
1229
1230 if (mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
1231 sz)) {
1232 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1233 ioc->name, __FILE__, __LINE__, __func__);
1234 rc = -ENXIO;
1235 goto out;
1236 }
1237
1238 /* link reset */
1239 _transport_phy_reset(phy, 0);
1240
1241 /* read phy page 0, then update the rates in the sas transport phy */
1242 if (!mpt2sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
1243 mpt2sas_phy->phy_id)) {
1244 phy->minimum_linkrate = _transport_convert_phy_link_rate(
1245 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1246 phy->maximum_linkrate = _transport_convert_phy_link_rate(
1247 phy_pg0.ProgrammedLinkRate >> 4);
1248 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1249 phy_pg0.NegotiatedLinkRate &
1250 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1251 }
1252
1253 out:
1254 kfree(sas_iounit_pg1);
1255 return rc;
1256 }
1257
1258
1259 /**
1260 * _transport_smp_handler - transport portal for smp passthru
1261 * @shost: shost object
1262 * @rphy: sas transport rphy object
1263 * @req:
1264 *
1265 * This used primarily for smp_utils.
1266 * Example:
1267 * smp_rep_general /sys/class/bsg/expander-5:0
1268 */
1269 static int
1270 _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
1271 struct request *req)
1272 {
1273 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
1274 Mpi2SmpPassthroughRequest_t *mpi_request;
1275 Mpi2SmpPassthroughReply_t *mpi_reply;
1276 int rc;
1277 u16 smid;
1278 u32 ioc_state;
1279 unsigned long timeleft;
1280 void *psge;
1281 u32 sgl_flags;
1282 u8 issue_reset = 0;
1283 dma_addr_t dma_addr_in = 0;
1284 dma_addr_t dma_addr_out = 0;
1285 u16 wait_state_count;
1286 struct request *rsp = req->next_rq;
1287
1288 if (!rsp) {
1289 printk(MPT2SAS_ERR_FMT "%s: the smp response space is "
1290 "missing\n", ioc->name, __func__);
1291 return -EINVAL;
1292 }
1293
1294 /* do we need to support multiple segments? */
1295 if (req->bio->bi_vcnt > 1 || rsp->bio->bi_vcnt > 1) {
1296 printk(MPT2SAS_ERR_FMT "%s: multiple segments req %u %u, "
1297 "rsp %u %u\n", ioc->name, __func__, req->bio->bi_vcnt,
1298 blk_rq_bytes(req), rsp->bio->bi_vcnt, blk_rq_bytes(rsp));
1299 return -EINVAL;
1300 }
1301
1302 if (ioc->shost_recovery) {
1303 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
1304 __func__, ioc->name);
1305 return -EFAULT;
1306 }
1307
1308 rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
1309 if (rc)
1310 return rc;
1311
1312 if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
1313 printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n", ioc->name,
1314 __func__);
1315 rc = -EAGAIN;
1316 goto out;
1317 }
1318 ioc->transport_cmds.status = MPT2_CMD_PENDING;
1319
1320 wait_state_count = 0;
1321 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1322 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1323 if (wait_state_count++ == 10) {
1324 printk(MPT2SAS_ERR_FMT
1325 "%s: failed due to ioc not operational\n",
1326 ioc->name, __func__);
1327 rc = -EFAULT;
1328 goto out;
1329 }
1330 ssleep(1);
1331 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1332 printk(MPT2SAS_INFO_FMT "%s: waiting for "
1333 "operational state(count=%d)\n", ioc->name,
1334 __func__, wait_state_count);
1335 }
1336 if (wait_state_count)
1337 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
1338 ioc->name, __func__);
1339
1340 smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
1341 if (!smid) {
1342 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1343 ioc->name, __func__);
1344 rc = -EAGAIN;
1345 goto out;
1346 }
1347
1348 rc = 0;
1349 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1350 ioc->transport_cmds.smid = smid;
1351
1352 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1353 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1354 mpi_request->PhysicalPort = 0xFF;
1355 mpi_request->VF_ID = 0; /* TODO */
1356 mpi_request->VP_ID = 0;
1357 *((u64 *)&mpi_request->SASAddress) = (rphy) ?
1358 cpu_to_le64(rphy->identify.sas_address) :
1359 cpu_to_le64(ioc->sas_hba.sas_address);
1360 mpi_request->RequestDataLength = cpu_to_le16(blk_rq_bytes(req) - 4);
1361 psge = &mpi_request->SGL;
1362
1363 /* WRITE sgel first */
1364 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1365 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
1366 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1367 dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio),
1368 blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL);
1369 if (!dma_addr_out) {
1370 mpt2sas_base_free_smid(ioc, smid);
1371 goto unmap;
1372 }
1373
1374 ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(req) - 4),
1375 dma_addr_out);
1376
1377 /* incr sgel */
1378 psge += ioc->sge_size;
1379
1380 /* READ sgel last */
1381 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1382 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
1383 MPI2_SGE_FLAGS_END_OF_LIST);
1384 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1385 dma_addr_in = pci_map_single(ioc->pdev, bio_data(rsp->bio),
1386 blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL);
1387 if (!dma_addr_in) {
1388 mpt2sas_base_free_smid(ioc, smid);
1389 goto unmap;
1390 }
1391
1392 ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(rsp) + 4),
1393 dma_addr_in);
1394
1395 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - "
1396 "sending smp request\n", ioc->name, __func__));
1397
1398 mpt2sas_base_put_smid_default(ioc, smid);
1399 init_completion(&ioc->transport_cmds.done);
1400 timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
1401 10*HZ);
1402
1403 if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
1404 printk(MPT2SAS_ERR_FMT "%s : timeout\n",
1405 __func__, ioc->name);
1406 _debug_dump_mf(mpi_request,
1407 sizeof(Mpi2SmpPassthroughRequest_t)/4);
1408 if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
1409 issue_reset = 1;
1410 goto issue_host_reset;
1411 }
1412
1413 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - "
1414 "complete\n", ioc->name, __func__));
1415
1416 if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
1417
1418 mpi_reply = ioc->transport_cmds.reply;
1419
1420 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
1421 "%s - reply data transfer size(%d)\n",
1422 ioc->name, __func__,
1423 le16_to_cpu(mpi_reply->ResponseDataLength)));
1424
1425 memcpy(req->sense, mpi_reply, sizeof(*mpi_reply));
1426 req->sense_len = sizeof(*mpi_reply);
1427 req->resid_len = 0;
1428 rsp->resid_len -=
1429 le16_to_cpu(mpi_reply->ResponseDataLength);
1430 } else {
1431 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
1432 "%s - no reply\n", ioc->name, __func__));
1433 rc = -ENXIO;
1434 }
1435
1436 issue_host_reset:
1437 if (issue_reset) {
1438 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1439 FORCE_BIG_HAMMER);
1440 rc = -ETIMEDOUT;
1441 }
1442
1443 unmap:
1444 if (dma_addr_out)
1445 pci_unmap_single(ioc->pdev, dma_addr_out, blk_rq_bytes(req),
1446 PCI_DMA_BIDIRECTIONAL);
1447 if (dma_addr_in)
1448 pci_unmap_single(ioc->pdev, dma_addr_in, blk_rq_bytes(rsp),
1449 PCI_DMA_BIDIRECTIONAL);
1450
1451 out:
1452 ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
1453 mutex_unlock(&ioc->transport_cmds.mutex);
1454 return rc;
1455 }
1456
1457 struct sas_function_template mpt2sas_transport_functions = {
1458 .get_linkerrors = _transport_get_linkerrors,
1459 .get_enclosure_identifier = _transport_get_enclosure_identifier,
1460 .get_bay_identifier = _transport_get_bay_identifier,
1461 .phy_reset = _transport_phy_reset,
1462 .phy_enable = _transport_phy_enable,
1463 .set_phy_speed = _transport_phy_speed,
1464 .smp_handler = _transport_smp_handler,
1465 };
1466
1467 struct scsi_transport_template *mpt2sas_transport_template;
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree