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PM: OMAP3: Removed a couple of unused variables from DVFS code
[linux-ginger.git] / drivers / scsi / mpt2sas / mpt2sas_transport.c
blobeb98188c7f3feb3c9373996276eec77fff8a6227
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) 2007-2009 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
53 #include <scsi/scsi.h>
54 #include <scsi/scsi_cmnd.h>
55 #include <scsi/scsi_device.h>
56 #include <scsi/scsi_host.h>
57 #include <scsi/scsi_transport_sas.h>
58 #include <scsi/scsi_dbg.h>
59
60 #include "mpt2sas_base.h"
61 /**
62 * _transport_sas_node_find_by_handle - sas node search
63 * @ioc: per adapter object
64 * @handle: expander or hba handle (assigned by firmware)
65 * Context: Calling function should acquire ioc->sas_node_lock.
66 *
67 * Search for either hba phys or expander device based on handle, then returns
68 * the sas_node object.
69 */
70 static struct _sas_node *
71 _transport_sas_node_find_by_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle)
72 {
73 int i;
74
75 for (i = 0; i < ioc->sas_hba.num_phys; i++)
76 if (ioc->sas_hba.phy[i].handle == handle)
77 return &ioc->sas_hba;
78
79 return mpt2sas_scsih_expander_find_by_handle(ioc, handle);
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:1;
263 u8 reserved1:7;
264 u8 reserved2[3];
265 u8 vendor_id[SAS_EXPANDER_VENDOR_ID_LEN];
266 u8 product_id[SAS_EXPANDER_PRODUCT_ID_LEN];
267 u8 product_rev[SAS_EXPANDER_PRODUCT_REV_LEN];
268 u8 component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN];
269 u16 component_id;
270 u8 component_revision_id;
271 u8 reserved3;
272 u8 vendor_specific[8];
273 };
274
275 /**
276 * _transport_expander_report_manufacture - obtain SMP report_manufacture
277 * @ioc: per adapter object
278 * @sas_address: expander sas address
279 * @edev: the sas_expander_device object
280 *
281 * Fills in the sas_expander_device object when SMP port is created.
282 *
283 * Returns 0 for success, non-zero for failure.
284 */
285 static int
286 _transport_expander_report_manufacture(struct MPT2SAS_ADAPTER *ioc,
287 u64 sas_address, struct sas_expander_device *edev)
288 {
289 Mpi2SmpPassthroughRequest_t *mpi_request;
290 Mpi2SmpPassthroughReply_t *mpi_reply;
291 struct rep_manu_reply *manufacture_reply;
292 struct rep_manu_request *manufacture_request;
293 int rc;
294 u16 smid;
295 u32 ioc_state;
296 unsigned long timeleft;
297 void *psge;
298 u32 sgl_flags;
299 u8 issue_reset = 0;
300 void *data_out = NULL;
301 dma_addr_t data_out_dma;
302 u32 sz;
303 u64 *sas_address_le;
304 u16 wait_state_count;
305
306 if (ioc->shost_recovery) {
307 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
308 __func__, ioc->name);
309 return -EFAULT;
310 }
311
312 mutex_lock(&ioc->transport_cmds.mutex);
313
314 if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
315 printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n",
316 ioc->name, __func__);
317 rc = -EAGAIN;
318 goto out;
319 }
320 ioc->transport_cmds.status = MPT2_CMD_PENDING;
321
322 wait_state_count = 0;
323 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
324 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
325 if (wait_state_count++ == 10) {
326 printk(MPT2SAS_ERR_FMT
327 "%s: failed due to ioc not operational\n",
328 ioc->name, __func__);
329 rc = -EFAULT;
330 goto out;
331 }
332 ssleep(1);
333 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
334 printk(MPT2SAS_INFO_FMT "%s: waiting for "
335 "operational state(count=%d)\n", ioc->name,
336 __func__, wait_state_count);
337 }
338 if (wait_state_count)
339 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
340 ioc->name, __func__);
341
342 smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
343 if (!smid) {
344 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
345 ioc->name, __func__);
346 rc = -EAGAIN;
347 goto out;
348 }
349
350 rc = 0;
351 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
352 ioc->transport_cmds.smid = smid;
353
354 sz = sizeof(struct rep_manu_request) + sizeof(struct rep_manu_reply);
355 data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
356
357 if (!data_out) {
358 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
359 __LINE__, __func__);
360 rc = -ENOMEM;
361 mpt2sas_base_free_smid(ioc, smid);
362 goto out;
363 }
364
365 manufacture_request = data_out;
366 manufacture_request->smp_frame_type = 0x40;
367 manufacture_request->function = 1;
368 manufacture_request->reserved = 0;
369 manufacture_request->request_length = 0;
370
371 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
372 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
373 mpi_request->PhysicalPort = 0xFF;
374 mpi_request->VF_ID = 0; /* TODO */
375 mpi_request->VP_ID = 0;
376 sas_address_le = (u64 *)&mpi_request->SASAddress;
377 *sas_address_le = cpu_to_le64(sas_address);
378 mpi_request->RequestDataLength = 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;
442 if (manufacture_reply->sas_format) {
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 * mpt2sas_transport_port_add - insert port to the list
470 * @ioc: per adapter object
471 * @handle: handle of attached device
472 * @parent_handle: parent handle(either hba or expander)
473 * Context: This function will acquire ioc->sas_node_lock.
474 *
475 * Adding new port object to the sas_node->sas_port_list.
476 *
477 * Returns mpt2sas_port.
478 */
479 struct _sas_port *
480 mpt2sas_transport_port_add(struct MPT2SAS_ADAPTER *ioc, u16 handle,
481 u16 parent_handle)
482 {
483 struct _sas_phy *mpt2sas_phy, *next;
484 struct _sas_port *mpt2sas_port;
485 unsigned long flags;
486 struct _sas_node *sas_node;
487 struct sas_rphy *rphy;
488 int i;
489 struct sas_port *port;
490
491 if (!parent_handle)
492 return NULL;
493
494 mpt2sas_port = kzalloc(sizeof(struct _sas_port),
495 GFP_KERNEL);
496 if (!mpt2sas_port) {
497 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
498 ioc->name, __FILE__, __LINE__, __func__);
499 return NULL;
500 }
501
502 INIT_LIST_HEAD(&mpt2sas_port->port_list);
503 INIT_LIST_HEAD(&mpt2sas_port->phy_list);
504 spin_lock_irqsave(&ioc->sas_node_lock, flags);
505 sas_node = _transport_sas_node_find_by_handle(ioc, parent_handle);
506 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
507
508 if (!sas_node) {
509 printk(MPT2SAS_ERR_FMT "%s: Could not find parent(0x%04x)!\n",
510 ioc->name, __func__, parent_handle);
511 goto out_fail;
512 }
513
514 mpt2sas_port->handle = parent_handle;
515 mpt2sas_port->sas_address = sas_node->sas_address;
516 if ((_transport_set_identify(ioc, handle,
517 &mpt2sas_port->remote_identify))) {
518 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
519 ioc->name, __FILE__, __LINE__, __func__);
520 goto out_fail;
521 }
522
523 if (mpt2sas_port->remote_identify.device_type == SAS_PHY_UNUSED) {
524 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
525 ioc->name, __FILE__, __LINE__, __func__);
526 goto out_fail;
527 }
528
529 for (i = 0; i < sas_node->num_phys; i++) {
530 if (sas_node->phy[i].remote_identify.sas_address !=
531 mpt2sas_port->remote_identify.sas_address)
532 continue;
533 list_add_tail(&sas_node->phy[i].port_siblings,
534 &mpt2sas_port->phy_list);
535 mpt2sas_port->num_phys++;
536 }
537
538 if (!mpt2sas_port->num_phys) {
539 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
540 ioc->name, __FILE__, __LINE__, __func__);
541 goto out_fail;
542 }
543
544 port = sas_port_alloc_num(sas_node->parent_dev);
545 if ((sas_port_add(port))) {
546 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
547 ioc->name, __FILE__, __LINE__, __func__);
548 goto out_fail;
549 }
550
551 list_for_each_entry(mpt2sas_phy, &mpt2sas_port->phy_list,
552 port_siblings) {
553 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
554 dev_printk(KERN_INFO, &port->dev, "add: handle(0x%04x)"
555 ", sas_addr(0x%016llx), phy(%d)\n", handle,
556 (unsigned long long)
557 mpt2sas_port->remote_identify.sas_address,
558 mpt2sas_phy->phy_id);
559 sas_port_add_phy(port, mpt2sas_phy->phy);
560 }
561
562 mpt2sas_port->port = port;
563 if (mpt2sas_port->remote_identify.device_type == SAS_END_DEVICE)
564 rphy = sas_end_device_alloc(port);
565 else
566 rphy = sas_expander_alloc(port,
567 mpt2sas_port->remote_identify.device_type);
568
569 rphy->identify = mpt2sas_port->remote_identify;
570 if ((sas_rphy_add(rphy))) {
571 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
572 ioc->name, __FILE__, __LINE__, __func__);
573 }
574 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
575 dev_printk(KERN_INFO, &rphy->dev, "add: handle(0x%04x), "
576 "sas_addr(0x%016llx)\n", handle,
577 (unsigned long long)
578 mpt2sas_port->remote_identify.sas_address);
579 mpt2sas_port->rphy = rphy;
580 spin_lock_irqsave(&ioc->sas_node_lock, flags);
581 list_add_tail(&mpt2sas_port->port_list, &sas_node->sas_port_list);
582 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
583
584 /* fill in report manufacture */
585 if (mpt2sas_port->remote_identify.device_type ==
586 MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
587 mpt2sas_port->remote_identify.device_type ==
588 MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
589 _transport_expander_report_manufacture(ioc,
590 mpt2sas_port->remote_identify.sas_address,
591 rphy_to_expander_device(rphy));
592
593 return mpt2sas_port;
594
595 out_fail:
596 list_for_each_entry_safe(mpt2sas_phy, next, &mpt2sas_port->phy_list,
597 port_siblings)
598 list_del(&mpt2sas_phy->port_siblings);
599 kfree(mpt2sas_port);
600 return NULL;
601 }
602
603 /**
604 * mpt2sas_transport_port_remove - remove port from the list
605 * @ioc: per adapter object
606 * @sas_address: sas address of attached device
607 * @parent_handle: handle to the upstream parent(either hba or expander)
608 * Context: This function will acquire ioc->sas_node_lock.
609 *
610 * Removing object and freeing associated memory from the
611 * ioc->sas_port_list.
612 *
613 * Return nothing.
614 */
615 void
616 mpt2sas_transport_port_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address,
617 u16 parent_handle)
618 {
619 int i;
620 unsigned long flags;
621 struct _sas_port *mpt2sas_port, *next;
622 struct _sas_node *sas_node;
623 u8 found = 0;
624 struct _sas_phy *mpt2sas_phy, *next_phy;
625
626 spin_lock_irqsave(&ioc->sas_node_lock, flags);
627 sas_node = _transport_sas_node_find_by_handle(ioc, parent_handle);
628 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
629 if (!sas_node)
630 return;
631 list_for_each_entry_safe(mpt2sas_port, next, &sas_node->sas_port_list,
632 port_list) {
633 if (mpt2sas_port->remote_identify.sas_address != sas_address)
634 continue;
635 found = 1;
636 list_del(&mpt2sas_port->port_list);
637 goto out;
638 }
639 out:
640 if (!found)
641 return;
642
643 for (i = 0; i < sas_node->num_phys; i++) {
644 if (sas_node->phy[i].remote_identify.sas_address == sas_address)
645 memset(&sas_node->phy[i].remote_identify, 0 ,
646 sizeof(struct sas_identify));
647 }
648
649 list_for_each_entry_safe(mpt2sas_phy, next_phy,
650 &mpt2sas_port->phy_list, port_siblings) {
651 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
652 dev_printk(KERN_INFO, &mpt2sas_port->port->dev,
653 "remove: parent_handle(0x%04x), "
654 "sas_addr(0x%016llx), phy(%d)\n", parent_handle,
655 (unsigned long long)
656 mpt2sas_port->remote_identify.sas_address,
657 mpt2sas_phy->phy_id);
658 sas_port_delete_phy(mpt2sas_port->port, mpt2sas_phy->phy);
659 list_del(&mpt2sas_phy->port_siblings);
660 }
661 sas_port_delete(mpt2sas_port->port);
662 kfree(mpt2sas_port);
663 }
664
665 /**
666 * mpt2sas_transport_add_host_phy - report sas_host phy to transport
667 * @ioc: per adapter object
668 * @mpt2sas_phy: mpt2sas per phy object
669 * @phy_pg0: sas phy page 0
670 * @parent_dev: parent device class object
671 *
672 * Returns 0 for success, non-zero for failure.
673 */
674 int
675 mpt2sas_transport_add_host_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
676 *mpt2sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
677 {
678 struct sas_phy *phy;
679 int phy_index = mpt2sas_phy->phy_id;
680
681
682 INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
683 phy = sas_phy_alloc(parent_dev, phy_index);
684 if (!phy) {
685 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
686 ioc->name, __FILE__, __LINE__, __func__);
687 return -1;
688 }
689 if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
690 &mpt2sas_phy->identify))) {
691 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
692 ioc->name, __FILE__, __LINE__, __func__);
693 return -1;
694 }
695 phy->identify = mpt2sas_phy->identify;
696 mpt2sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
697 if (mpt2sas_phy->attached_handle)
698 _transport_set_identify(ioc, mpt2sas_phy->attached_handle,
699 &mpt2sas_phy->remote_identify);
700 phy->identify.phy_identifier = mpt2sas_phy->phy_id;
701 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
702 phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
703 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
704 phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
705 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
706 phy_pg0.HwLinkRate >> 4);
707 phy->minimum_linkrate = _transport_convert_phy_link_rate(
708 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
709 phy->maximum_linkrate = _transport_convert_phy_link_rate(
710 phy_pg0.ProgrammedLinkRate >> 4);
711
712 if ((sas_phy_add(phy))) {
713 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
714 ioc->name, __FILE__, __LINE__, __func__);
715 sas_phy_free(phy);
716 return -1;
717 }
718 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
719 dev_printk(KERN_INFO, &phy->dev,
720 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
721 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
722 mpt2sas_phy->handle, (unsigned long long)
723 mpt2sas_phy->identify.sas_address,
724 mpt2sas_phy->attached_handle,
725 (unsigned long long)
726 mpt2sas_phy->remote_identify.sas_address);
727 mpt2sas_phy->phy = phy;
728 return 0;
729 }
730
731
732 /**
733 * mpt2sas_transport_add_expander_phy - report expander phy to transport
734 * @ioc: per adapter object
735 * @mpt2sas_phy: mpt2sas per phy object
736 * @expander_pg1: expander page 1
737 * @parent_dev: parent device class object
738 *
739 * Returns 0 for success, non-zero for failure.
740 */
741 int
742 mpt2sas_transport_add_expander_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
743 *mpt2sas_phy, Mpi2ExpanderPage1_t expander_pg1, struct device *parent_dev)
744 {
745 struct sas_phy *phy;
746 int phy_index = mpt2sas_phy->phy_id;
747
748 INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
749 phy = sas_phy_alloc(parent_dev, phy_index);
750 if (!phy) {
751 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
752 ioc->name, __FILE__, __LINE__, __func__);
753 return -1;
754 }
755 if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
756 &mpt2sas_phy->identify))) {
757 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
758 ioc->name, __FILE__, __LINE__, __func__);
759 return -1;
760 }
761 phy->identify = mpt2sas_phy->identify;
762 mpt2sas_phy->attached_handle =
763 le16_to_cpu(expander_pg1.AttachedDevHandle);
764 if (mpt2sas_phy->attached_handle)
765 _transport_set_identify(ioc, mpt2sas_phy->attached_handle,
766 &mpt2sas_phy->remote_identify);
767 phy->identify.phy_identifier = mpt2sas_phy->phy_id;
768 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
769 expander_pg1.NegotiatedLinkRate &
770 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
771 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
772 expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
773 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
774 expander_pg1.HwLinkRate >> 4);
775 phy->minimum_linkrate = _transport_convert_phy_link_rate(
776 expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
777 phy->maximum_linkrate = _transport_convert_phy_link_rate(
778 expander_pg1.ProgrammedLinkRate >> 4);
779
780 if ((sas_phy_add(phy))) {
781 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
782 ioc->name, __FILE__, __LINE__, __func__);
783 sas_phy_free(phy);
784 return -1;
785 }
786 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
787 dev_printk(KERN_INFO, &phy->dev,
788 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
789 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
790 mpt2sas_phy->handle, (unsigned long long)
791 mpt2sas_phy->identify.sas_address,
792 mpt2sas_phy->attached_handle,
793 (unsigned long long)
794 mpt2sas_phy->remote_identify.sas_address);
795 mpt2sas_phy->phy = phy;
796 return 0;
797 }
798
799 /**
800 * mpt2sas_transport_update_links - refreshing phy link changes
801 * @ioc: per adapter object
802 * @handle: handle to sas_host or expander
803 * @attached_handle: attached device handle
804 * @phy_numberv: phy number
805 * @link_rate: new link rate
806 *
807 * Returns nothing.
808 */
809 void
810 mpt2sas_transport_update_links(struct MPT2SAS_ADAPTER *ioc,
811 u16 handle, u16 attached_handle, u8 phy_number, u8 link_rate)
812 {
813 unsigned long flags;
814 struct _sas_node *sas_node;
815 struct _sas_phy *mpt2sas_phy;
816
817 if (ioc->shost_recovery) {
818 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
819 __func__, ioc->name);
820 return;
821 }
822
823 spin_lock_irqsave(&ioc->sas_node_lock, flags);
824 sas_node = _transport_sas_node_find_by_handle(ioc, handle);
825 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
826 if (!sas_node)
827 return;
828
829 mpt2sas_phy = &sas_node->phy[phy_number];
830 mpt2sas_phy->attached_handle = attached_handle;
831 if (attached_handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5))
832 _transport_set_identify(ioc, mpt2sas_phy->attached_handle,
833 &mpt2sas_phy->remote_identify);
834 else
835 memset(&mpt2sas_phy->remote_identify, 0 , sizeof(struct
836 sas_identify));
837
838 if (mpt2sas_phy->phy)
839 mpt2sas_phy->phy->negotiated_linkrate =
840 _transport_convert_phy_link_rate(link_rate);
841
842 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
843 dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
844 "refresh: handle(0x%04x), sas_addr(0x%016llx),\n"
845 "\tlink_rate(0x%02x), phy(%d)\n"
846 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
847 handle, (unsigned long long)
848 mpt2sas_phy->identify.sas_address, link_rate,
849 phy_number, attached_handle,
850 (unsigned long long)
851 mpt2sas_phy->remote_identify.sas_address);
852 }
853
854 static inline void *
855 phy_to_ioc(struct sas_phy *phy)
856 {
857 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
858 return shost_priv(shost);
859 }
860
861 static inline void *
862 rphy_to_ioc(struct sas_rphy *rphy)
863 {
864 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
865 return shost_priv(shost);
866 }
867
868 /**
869 * _transport_get_linkerrors -
870 * @phy: The sas phy object
871 *
872 * Only support sas_host direct attached phys.
873 * Returns 0 for success, non-zero for failure.
874 *
875 */
876 static int
877 _transport_get_linkerrors(struct sas_phy *phy)
878 {
879 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
880 struct _sas_phy *mpt2sas_phy;
881 Mpi2ConfigReply_t mpi_reply;
882 Mpi2SasPhyPage1_t phy_pg1;
883 int i;
884
885 for (i = 0, mpt2sas_phy = NULL; i < ioc->sas_hba.num_phys &&
886 !mpt2sas_phy; i++) {
887 if (ioc->sas_hba.phy[i].phy != phy)
888 continue;
889 mpt2sas_phy = &ioc->sas_hba.phy[i];
890 }
891
892 if (!mpt2sas_phy) /* this phy not on sas_host */
893 return -EINVAL;
894
895 if ((mpt2sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
896 mpt2sas_phy->phy_id))) {
897 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
898 ioc->name, __FILE__, __LINE__, __func__);
899 return -ENXIO;
900 }
901
902 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
903 printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
904 "(0x%04x), loginfo(0x%08x)\n", ioc->name,
905 mpt2sas_phy->phy_id,
906 le16_to_cpu(mpi_reply.IOCStatus),
907 le32_to_cpu(mpi_reply.IOCLogInfo));
908
909 phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
910 phy->running_disparity_error_count =
911 le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
912 phy->loss_of_dword_sync_count =
913 le32_to_cpu(phy_pg1.LossDwordSynchCount);
914 phy->phy_reset_problem_count =
915 le32_to_cpu(phy_pg1.PhyResetProblemCount);
916 return 0;
917 }
918
919 /**
920 * _transport_get_enclosure_identifier -
921 * @phy: The sas phy object
922 *
923 * Obtain the enclosure logical id for an expander.
924 * Returns 0 for success, non-zero for failure.
925 */
926 static int
927 _transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
928 {
929 struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
930 struct _sas_node *sas_expander;
931 unsigned long flags;
932
933 spin_lock_irqsave(&ioc->sas_node_lock, flags);
934 sas_expander = mpt2sas_scsih_expander_find_by_sas_address(ioc,
935 rphy->identify.sas_address);
936 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
937
938 if (!sas_expander)
939 return -ENXIO;
940
941 *identifier = sas_expander->enclosure_logical_id;
942 return 0;
943 }
944
945 /**
946 * _transport_get_bay_identifier -
947 * @phy: The sas phy object
948 *
949 * Returns the slot id for a device that resides inside an enclosure.
950 */
951 static int
952 _transport_get_bay_identifier(struct sas_rphy *rphy)
953 {
954 struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
955 struct _sas_device *sas_device;
956 unsigned long flags;
957
958 spin_lock_irqsave(&ioc->sas_device_lock, flags);
959 sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
960 rphy->identify.sas_address);
961 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
962
963 if (!sas_device)
964 return -ENXIO;
965
966 return sas_device->slot;
967 }
968
969 /**
970 * _transport_phy_reset -
971 * @phy: The sas phy object
972 * @hard_reset:
973 *
974 * Only support sas_host direct attached phys.
975 * Returns 0 for success, non-zero for failure.
976 */
977 static int
978 _transport_phy_reset(struct sas_phy *phy, int hard_reset)
979 {
980 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
981 struct _sas_phy *mpt2sas_phy;
982 Mpi2SasIoUnitControlReply_t mpi_reply;
983 Mpi2SasIoUnitControlRequest_t mpi_request;
984 int i;
985
986 for (i = 0, mpt2sas_phy = NULL; i < ioc->sas_hba.num_phys &&
987 !mpt2sas_phy; i++) {
988 if (ioc->sas_hba.phy[i].phy != phy)
989 continue;
990 mpt2sas_phy = &ioc->sas_hba.phy[i];
991 }
992
993 if (!mpt2sas_phy) /* this phy not on sas_host */
994 return -EINVAL;
995
996 memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlReply_t));
997 mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
998 mpi_request.Operation = hard_reset ?
999 MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
1000 mpi_request.PhyNum = mpt2sas_phy->phy_id;
1001
1002 if ((mpt2sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
1003 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1004 ioc->name, __FILE__, __LINE__, __func__);
1005 return -ENXIO;
1006 }
1007
1008 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1009 printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
1010 "(0x%04x), loginfo(0x%08x)\n", ioc->name,
1011 mpt2sas_phy->phy_id,
1012 le16_to_cpu(mpi_reply.IOCStatus),
1013 le32_to_cpu(mpi_reply.IOCLogInfo));
1014
1015 return 0;
1016 }
1017
1018 /**
1019 * _transport_smp_handler - transport portal for smp passthru
1020 * @shost: shost object
1021 * @rphy: sas transport rphy object
1022 * @req:
1023 *
1024 * This used primarily for smp_utils.
1025 * Example:
1026 * smp_rep_general /sys/class/bsg/expander-5:0
1027 */
1028 static int
1029 _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
1030 struct request *req)
1031 {
1032 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
1033 Mpi2SmpPassthroughRequest_t *mpi_request;
1034 Mpi2SmpPassthroughReply_t *mpi_reply;
1035 int rc;
1036 u16 smid;
1037 u32 ioc_state;
1038 unsigned long timeleft;
1039 void *psge;
1040 u32 sgl_flags;
1041 u8 issue_reset = 0;
1042 dma_addr_t dma_addr_in = 0;
1043 dma_addr_t dma_addr_out = 0;
1044 u16 wait_state_count;
1045 struct request *rsp = req->next_rq;
1046
1047 if (!rsp) {
1048 printk(MPT2SAS_ERR_FMT "%s: the smp response space is "
1049 "missing\n", ioc->name, __func__);
1050 return -EINVAL;
1051 }
1052
1053 /* do we need to support multiple segments? */
1054 if (req->bio->bi_vcnt > 1 || rsp->bio->bi_vcnt > 1) {
1055 printk(MPT2SAS_ERR_FMT "%s: multiple segments req %u %u, "
1056 "rsp %u %u\n", ioc->name, __func__, req->bio->bi_vcnt,
1057 blk_rq_bytes(req), rsp->bio->bi_vcnt, blk_rq_bytes(rsp));
1058 return -EINVAL;
1059 }
1060
1061 if (ioc->shost_recovery) {
1062 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
1063 __func__, ioc->name);
1064 return -EFAULT;
1065 }
1066
1067 rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
1068 if (rc)
1069 return rc;
1070
1071 if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
1072 printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n", ioc->name,
1073 __func__);
1074 rc = -EAGAIN;
1075 goto out;
1076 }
1077 ioc->transport_cmds.status = MPT2_CMD_PENDING;
1078
1079 wait_state_count = 0;
1080 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1081 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1082 if (wait_state_count++ == 10) {
1083 printk(MPT2SAS_ERR_FMT
1084 "%s: failed due to ioc not operational\n",
1085 ioc->name, __func__);
1086 rc = -EFAULT;
1087 goto out;
1088 }
1089 ssleep(1);
1090 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1091 printk(MPT2SAS_INFO_FMT "%s: waiting for "
1092 "operational state(count=%d)\n", ioc->name,
1093 __func__, wait_state_count);
1094 }
1095 if (wait_state_count)
1096 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
1097 ioc->name, __func__);
1098
1099 smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
1100 if (!smid) {
1101 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1102 ioc->name, __func__);
1103 rc = -EAGAIN;
1104 goto out;
1105 }
1106
1107 rc = 0;
1108 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1109 ioc->transport_cmds.smid = smid;
1110
1111 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1112 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1113 mpi_request->PhysicalPort = 0xFF;
1114 mpi_request->VF_ID = 0; /* TODO */
1115 mpi_request->VP_ID = 0;
1116 *((u64 *)&mpi_request->SASAddress) = (rphy) ?
1117 cpu_to_le64(rphy->identify.sas_address) :
1118 cpu_to_le64(ioc->sas_hba.sas_address);
1119 mpi_request->RequestDataLength = cpu_to_le16(blk_rq_bytes(req) - 4);
1120 psge = &mpi_request->SGL;
1121
1122 /* WRITE sgel first */
1123 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1124 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
1125 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1126 dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio),
1127 blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL);
1128 if (!dma_addr_out) {
1129 mpt2sas_base_free_smid(ioc, le16_to_cpu(smid));
1130 goto unmap;
1131 }
1132
1133 ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(req) - 4),
1134 dma_addr_out);
1135
1136 /* incr sgel */
1137 psge += ioc->sge_size;
1138
1139 /* READ sgel last */
1140 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1141 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
1142 MPI2_SGE_FLAGS_END_OF_LIST);
1143 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1144 dma_addr_in = pci_map_single(ioc->pdev, bio_data(rsp->bio),
1145 blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL);
1146 if (!dma_addr_in) {
1147 mpt2sas_base_free_smid(ioc, le16_to_cpu(smid));
1148 goto unmap;
1149 }
1150
1151 ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(rsp) + 4),
1152 dma_addr_in);
1153
1154 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - "
1155 "sending smp request\n", ioc->name, __func__));
1156
1157 mpt2sas_base_put_smid_default(ioc, smid);
1158 init_completion(&ioc->transport_cmds.done);
1159 timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
1160 10*HZ);
1161
1162 if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
1163 printk(MPT2SAS_ERR_FMT "%s : timeout\n",
1164 __func__, ioc->name);
1165 _debug_dump_mf(mpi_request,
1166 sizeof(Mpi2SmpPassthroughRequest_t)/4);
1167 if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
1168 issue_reset = 1;
1169 goto issue_host_reset;
1170 }
1171
1172 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - "
1173 "complete\n", ioc->name, __func__));
1174
1175 if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
1176
1177 mpi_reply = ioc->transport_cmds.reply;
1178
1179 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
1180 "%s - reply data transfer size(%d)\n",
1181 ioc->name, __func__,
1182 le16_to_cpu(mpi_reply->ResponseDataLength)));
1183
1184 memcpy(req->sense, mpi_reply, sizeof(*mpi_reply));
1185 req->sense_len = sizeof(*mpi_reply);
1186 req->resid_len = 0;
1187 rsp->resid_len -= mpi_reply->ResponseDataLength;
1188 } else {
1189 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
1190 "%s - no reply\n", ioc->name, __func__));
1191 rc = -ENXIO;
1192 }
1193
1194 issue_host_reset:
1195 if (issue_reset) {
1196 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1197 FORCE_BIG_HAMMER);
1198 rc = -ETIMEDOUT;
1199 }
1200
1201 unmap:
1202 if (dma_addr_out)
1203 pci_unmap_single(ioc->pdev, dma_addr_out, blk_rq_bytes(req),
1204 PCI_DMA_BIDIRECTIONAL);
1205 if (dma_addr_in)
1206 pci_unmap_single(ioc->pdev, dma_addr_in, blk_rq_bytes(rsp),
1207 PCI_DMA_BIDIRECTIONAL);
1208
1209 out:
1210 ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
1211 mutex_unlock(&ioc->transport_cmds.mutex);
1212 return rc;
1213 }
1214
1215 struct sas_function_template mpt2sas_transport_functions = {
1216 .get_linkerrors = _transport_get_linkerrors,
1217 .get_enclosure_identifier = _transport_get_enclosure_identifier,
1218 .get_bay_identifier = _transport_get_bay_identifier,
1219 .phy_reset = _transport_phy_reset,
1220 .smp_handler = _transport_smp_handler,
1221 };
1222
1223 struct scsi_transport_template *mpt2sas_transport_template;
Linux for Ginger Game Console