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[linux-2.6-block.git] / drivers / scsi / mpt2sas / mpt2sas_transport.c
CommitLineData
635374e7
EM		 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) 2007-2008 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 */
70static 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 */
88static 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 */
134static 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 ((mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
144 MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
145 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
146 ioc->name, __FILE__, __LINE__, __func__);
147 return -1;
148 }
149
150 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
151 MPI2_IOCSTATUS_MASK;
152 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
153 printk(MPT2SAS_ERR_FMT "handle(0x%04x), ioc_status(0x%04x)"
154 "\nfailure at %s:%d/%s()!\n", ioc->name, handle, ioc_status,
155 __FILE__, __LINE__, __func__);
156 return -1;
157 }
158
159 memset(identify, 0, sizeof(identify));
160 device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
161
162 /* sas_address */
163 identify->sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
164
165 /* device_type */
166 switch (device_info & MPI2_SAS_DEVICE_INFO_MASK_DEVICE_TYPE) {
167 case MPI2_SAS_DEVICE_INFO_NO_DEVICE:
168 identify->device_type = SAS_PHY_UNUSED;
169 break;
170 case MPI2_SAS_DEVICE_INFO_END_DEVICE:
171 identify->device_type = SAS_END_DEVICE;
172 break;
173 case MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER:
174 identify->device_type = SAS_EDGE_EXPANDER_DEVICE;
175 break;
176 case MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER:
177 identify->device_type = SAS_FANOUT_EXPANDER_DEVICE;
178 break;
179 }
180
181 /* initiator_port_protocols */
182 if (device_info & MPI2_SAS_DEVICE_INFO_SSP_INITIATOR)
183 identify->initiator_port_protocols |= SAS_PROTOCOL_SSP;
184 if (device_info & MPI2_SAS_DEVICE_INFO_STP_INITIATOR)
185 identify->initiator_port_protocols |= SAS_PROTOCOL_STP;
186 if (device_info & MPI2_SAS_DEVICE_INFO_SMP_INITIATOR)
187 identify->initiator_port_protocols |= SAS_PROTOCOL_SMP;
188 if (device_info & MPI2_SAS_DEVICE_INFO_SATA_HOST)
189 identify->initiator_port_protocols |= SAS_PROTOCOL_SATA;
190
191 /* target_port_protocols */
192 if (device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET)
193 identify->target_port_protocols |= SAS_PROTOCOL_SSP;
194 if (device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET)
195 identify->target_port_protocols |= SAS_PROTOCOL_STP;
196 if (device_info & MPI2_SAS_DEVICE_INFO_SMP_TARGET)
197 identify->target_port_protocols |= SAS_PROTOCOL_SMP;
198 if (device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
199 identify->target_port_protocols |= SAS_PROTOCOL_SATA;
200
201 return 0;
202}
203
204/**
205 * mpt2sas_transport_done - internal transport layer callback handler.
206 * @ioc: per adapter object
207 * @smid: system request message index
208 * @VF_ID: virtual function id
209 * @reply: reply message frame(lower 32bit addr)
210 *
211 * Callback handler when sending internal generated transport cmds.
212 * The callback index passed is `ioc->transport_cb_idx`
213 *
214 * Return nothing.
215 */
216void
217mpt2sas_transport_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID,
218 u32 reply)
219{
220 MPI2DefaultReply_t *mpi_reply;
221
222 mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
223 if (ioc->transport_cmds.status == MPT2_CMD_NOT_USED)
224 return;
225 if (ioc->transport_cmds.smid != smid)
226 return;
227 ioc->transport_cmds.status |= MPT2_CMD_COMPLETE;
228 if (mpi_reply) {
229 memcpy(ioc->transport_cmds.reply, mpi_reply,
230 mpi_reply->MsgLength*4);
231 ioc->transport_cmds.status |= MPT2_CMD_REPLY_VALID;
232 }
233 ioc->transport_cmds.status &= ~MPT2_CMD_PENDING;
234 complete(&ioc->transport_cmds.done);
235}
236
237/* report manufacture request structure */
238struct rep_manu_request{
239 u8 smp_frame_type;
240 u8 function;
241 u8 reserved;
242 u8 request_length;
243};
244
245/* report manufacture reply structure */
246struct rep_manu_reply{
247 u8 smp_frame_type; /* 0x41 */
248 u8 function; /* 0x01 */
249 u8 function_result;
250 u8 response_length;
251 u16 expander_change_count;
252 u8 reserved0[2];
253 u8 sas_format:1;
254 u8 reserved1:7;
255 u8 reserved2[3];
256 u8 vendor_id[SAS_EXPANDER_VENDOR_ID_LEN];
257 u8 product_id[SAS_EXPANDER_PRODUCT_ID_LEN];
258 u8 product_rev[SAS_EXPANDER_PRODUCT_REV_LEN];
259 u8 component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN];
260 u16 component_id;
261 u8 component_revision_id;
262 u8 reserved3;
263 u8 vendor_specific[8];
264};
265
266/**
267 * transport_expander_report_manufacture - obtain SMP report_manufacture
268 * @ioc: per adapter object
269 * @sas_address: expander sas address
270 * @edev: the sas_expander_device object
271 *
272 * Fills in the sas_expander_device object when SMP port is created.
273 *
274 * Returns 0 for success, non-zero for failure.
275 */
276static int
277transport_expander_report_manufacture(struct MPT2SAS_ADAPTER *ioc,
278 u64 sas_address, struct sas_expander_device *edev)
279{
280 Mpi2SmpPassthroughRequest_t *mpi_request;
281 Mpi2SmpPassthroughReply_t *mpi_reply;
282 struct rep_manu_reply *manufacture_reply;
283 struct rep_manu_request *manufacture_request;
284 int rc;
285 u16 smid;
286 u32 ioc_state;
287 unsigned long timeleft;
288 void *psge;
289 u32 sgl_flags;
290 u8 issue_reset = 0;
291 unsigned long flags;
292 void *data_out = NULL;
293 dma_addr_t data_out_dma;
294 u32 sz;
295 u64 *sas_address_le;
296 u16 wait_state_count;
297
298 spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
299 if (ioc->ioc_reset_in_progress) {
300 spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
301 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
302 __func__, ioc->name);
303 return -EFAULT;
304 }
305 spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
306
307 mutex_lock(&ioc->transport_cmds.mutex);
308
309 if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
310 printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n",
311 ioc->name, __func__);
312 rc = -EAGAIN;
313 goto out;
314 }
315 ioc->transport_cmds.status = MPT2_CMD_PENDING;
316
317 wait_state_count = 0;
318 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
319 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
320 if (wait_state_count++ == 10) {
321 printk(MPT2SAS_ERR_FMT
322 "%s: failed due to ioc not operational\n",
323 ioc->name, __func__);
324 rc = -EFAULT;
325 goto out;
326 }
327 ssleep(1);
328 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
329 printk(MPT2SAS_INFO_FMT "%s: waiting for "
330 "operational state(count=%d)\n", ioc->name,
331 __func__, wait_state_count);
332 }
333 if (wait_state_count)
334 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
335 ioc->name, __func__);
336
337 smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
338 if (!smid) {
339 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
340 ioc->name, __func__);
341 rc = -EAGAIN;
342 goto out;
343 }
344
345 rc = 0;
346 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
347 ioc->transport_cmds.smid = smid;
348
349 sz = sizeof(struct rep_manu_request) + sizeof(struct rep_manu_reply);
350 data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
351
352 if (!data_out) {
353 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
354 __LINE__, __func__);
355 rc = -ENOMEM;
356 mpt2sas_base_free_smid(ioc, smid);
357 goto out;
358 }
359
360 manufacture_request = data_out;
361 manufacture_request->smp_frame_type = 0x40;
362 manufacture_request->function = 1;
363 manufacture_request->reserved = 0;
364 manufacture_request->request_length = 0;
365
366 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
367 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
368 mpi_request->PhysicalPort = 0xFF;
369 sas_address_le = (u64 *)&mpi_request->SASAddress;
370 *sas_address_le = cpu_to_le64(sas_address);
371 mpi_request->RequestDataLength = sizeof(struct rep_manu_request);
372 psge = &mpi_request->SGL;
373
374 /* WRITE sgel first */
375 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
376 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
377 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
378 ioc->base_add_sg_single(psge, sgl_flags |
379 sizeof(struct rep_manu_request), data_out_dma);
380
381 /* incr sgel */
382 psge += ioc->sge_size;
383
384 /* READ sgel last */
385 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
386 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
387 MPI2_SGE_FLAGS_END_OF_LIST);
388 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
389 ioc->base_add_sg_single(psge, sgl_flags |
390 sizeof(struct rep_manu_reply), data_out_dma +
391 sizeof(struct rep_manu_request));
392
393 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "report_manufacture - "
394 "send to sas_addr(0x%016llx)\n", ioc->name,
395 (unsigned long long)sas_address));
396 mpt2sas_base_put_smid_default(ioc, smid, 0 /* VF_ID */);
397 timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
398 10*HZ);
399
400 if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
401 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
402 ioc->name, __func__);
403 _debug_dump_mf(mpi_request,
404 sizeof(Mpi2SmpPassthroughRequest_t)/4);
405 if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
406 issue_reset = 1;
407 goto issue_host_reset;
408 }
409
410 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "report_manufacture - "
411 "complete\n", ioc->name));
412
413 if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
414 u8 *tmp;
415
416 mpi_reply = ioc->transport_cmds.reply;
417
418 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
419 "report_manufacture - reply data transfer size(%d)\n",
420 ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
421
422 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
423 sizeof(struct rep_manu_reply))
424 goto out;
425
426 manufacture_reply = data_out + sizeof(struct rep_manu_request);
427 strncpy(edev->vendor_id, manufacture_reply->vendor_id,
428 SAS_EXPANDER_VENDOR_ID_LEN);
429 strncpy(edev->product_id, manufacture_reply->product_id,
430 SAS_EXPANDER_PRODUCT_ID_LEN);
431 strncpy(edev->product_rev, manufacture_reply->product_rev,
432 SAS_EXPANDER_PRODUCT_REV_LEN);
433 edev->level = manufacture_reply->sas_format;
434 if (manufacture_reply->sas_format) {
435 strncpy(edev->component_vendor_id,
436 manufacture_reply->component_vendor_id,
437 SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN);
438 tmp = (u8 *)&manufacture_reply->component_id;
439 edev->component_id = tmp[0] << 8 | tmp[1];
440 edev->component_revision_id =
441 manufacture_reply->component_revision_id;
442 }
443 } else
444 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
445 "report_manufacture - no reply\n", ioc->name));
446
447 issue_host_reset:
448 if (issue_reset)
449 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
450 FORCE_BIG_HAMMER);
451 out:
452 ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
453 if (data_out)
454 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
455
456 mutex_unlock(&ioc->transport_cmds.mutex);
457 return rc;
458}
459
460/**
461 * mpt2sas_transport_port_add - insert port to the list
462 * @ioc: per adapter object
463 * @handle: handle of attached device
464 * @parent_handle: parent handle(either hba or expander)
465 * Context: This function will acquire ioc->sas_node_lock.
466 *
467 * Adding new port object to the sas_node->sas_port_list.
468 *
469 * Returns mpt2sas_port.
470 */
471struct _sas_port *
472mpt2sas_transport_port_add(struct MPT2SAS_ADAPTER *ioc, u16 handle,
473 u16 parent_handle)
474{
475 struct _sas_phy *mpt2sas_phy, *next;
476 struct _sas_port *mpt2sas_port;
477 unsigned long flags;
478 struct _sas_node *sas_node;
479 struct sas_rphy *rphy;
480 int i;
481 struct sas_port *port;
482
483 if (!parent_handle)
484 return NULL;
485
486 mpt2sas_port = kzalloc(sizeof(struct _sas_port),
487 GFP_KERNEL);
488 if (!mpt2sas_port) {
489 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
490 ioc->name, __FILE__, __LINE__, __func__);
491 return NULL;
492 }
493
494 INIT_LIST_HEAD(&mpt2sas_port->port_list);
495 INIT_LIST_HEAD(&mpt2sas_port->phy_list);
496 spin_lock_irqsave(&ioc->sas_node_lock, flags);
497 sas_node = _transport_sas_node_find_by_handle(ioc, parent_handle);
498 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
499
500 if (!sas_node) {
501 printk(MPT2SAS_ERR_FMT "%s: Could not find parent(0x%04x)!\n",
502 ioc->name, __func__, parent_handle);
503 goto out_fail;
504 }
505
506 mpt2sas_port->handle = parent_handle;
507 mpt2sas_port->sas_address = sas_node->sas_address;
508 if ((_transport_set_identify(ioc, handle,
509 &mpt2sas_port->remote_identify))) {
510 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
511 ioc->name, __FILE__, __LINE__, __func__);
512 goto out_fail;
513 }
514
515 if (mpt2sas_port->remote_identify.device_type == SAS_PHY_UNUSED) {
516 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
517 ioc->name, __FILE__, __LINE__, __func__);
518 goto out_fail;
519 }
520
521 for (i = 0; i < sas_node->num_phys; i++) {
522 if (sas_node->phy[i].remote_identify.sas_address !=
523 mpt2sas_port->remote_identify.sas_address)
524 continue;
525 list_add_tail(&sas_node->phy[i].port_siblings,
526 &mpt2sas_port->phy_list);
527 mpt2sas_port->num_phys++;
528 }
529
530 if (!mpt2sas_port->num_phys) {
531 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
532 ioc->name, __FILE__, __LINE__, __func__);
533 goto out_fail;
534 }
535
536 port = sas_port_alloc_num(sas_node->parent_dev);
537 if ((sas_port_add(port))) {
538 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
539 ioc->name, __FILE__, __LINE__, __func__);
540 goto out_fail;
541 }
542
543 list_for_each_entry(mpt2sas_phy, &mpt2sas_port->phy_list,
544 port_siblings) {
545 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
546 dev_printk(KERN_INFO, &port->dev, "add: handle(0x%04x)"
547 ", sas_addr(0x%016llx), phy(%d)\n", handle,
548 (unsigned long long)
549 mpt2sas_port->remote_identify.sas_address,
550 mpt2sas_phy->phy_id);
551 sas_port_add_phy(port, mpt2sas_phy->phy);
552 }
553
554 mpt2sas_port->port = port;
555 if (mpt2sas_port->remote_identify.device_type == SAS_END_DEVICE)
556 rphy = sas_end_device_alloc(port);
557 else
558 rphy = sas_expander_alloc(port,
559 mpt2sas_port->remote_identify.device_type);
560
561 rphy->identify = mpt2sas_port->remote_identify;
562 if ((sas_rphy_add(rphy))) {
563 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
564 ioc->name, __FILE__, __LINE__, __func__);
565 }
566 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
567 dev_printk(KERN_INFO, &rphy->dev, "add: handle(0x%04x), "
568 "sas_addr(0x%016llx)\n", handle,
569 (unsigned long long)
570 mpt2sas_port->remote_identify.sas_address);
571 mpt2sas_port->rphy = rphy;
572 spin_lock_irqsave(&ioc->sas_node_lock, flags);
573 list_add_tail(&mpt2sas_port->port_list, &sas_node->sas_port_list);
574 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
575
576 /* fill in report manufacture */
577 if (mpt2sas_port->remote_identify.device_type ==
578 MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
579 mpt2sas_port->remote_identify.device_type ==
580 MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
581 transport_expander_report_manufacture(ioc,
582 mpt2sas_port->remote_identify.sas_address,
583 rphy_to_expander_device(rphy));
584
585 return mpt2sas_port;
586
587 out_fail:
588 list_for_each_entry_safe(mpt2sas_phy, next, &mpt2sas_port->phy_list,
589 port_siblings)
590 list_del(&mpt2sas_phy->port_siblings);
591 kfree(mpt2sas_port);
592 return NULL;
593}
594
595/**
596 * mpt2sas_transport_port_remove - remove port from the list
597 * @ioc: per adapter object
598 * @sas_address: sas address of attached device
599 * @parent_handle: handle to the upstream parent(either hba or expander)
600 * Context: This function will acquire ioc->sas_node_lock.
601 *
602 * Removing object and freeing associated memory from the
603 * ioc->sas_port_list.
604 *
605 * Return nothing.
606 */
607void
608mpt2sas_transport_port_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address,
609 u16 parent_handle)
610{
611 int i;
612 unsigned long flags;
613 struct _sas_port *mpt2sas_port, *next;
614 struct _sas_node *sas_node;
615 u8 found = 0;
616 struct _sas_phy *mpt2sas_phy, *next_phy;
617
618 spin_lock_irqsave(&ioc->sas_node_lock, flags);
619 sas_node = _transport_sas_node_find_by_handle(ioc, parent_handle);
620 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
621 if (!sas_node)
622 return;
623 list_for_each_entry_safe(mpt2sas_port, next, &sas_node->sas_port_list,
624 port_list) {
625 if (mpt2sas_port->remote_identify.sas_address != sas_address)
626 continue;
627 found = 1;
628 list_del(&mpt2sas_port->port_list);
629 goto out;
630 }
631 out:
632 if (!found)
633 return;
634
635 for (i = 0; i < sas_node->num_phys; i++) {
636 if (sas_node->phy[i].remote_identify.sas_address == sas_address)
637 memset(&sas_node->phy[i].remote_identify, 0 ,
638 sizeof(struct sas_identify));
639 }
640
641 list_for_each_entry_safe(mpt2sas_phy, next_phy,
642 &mpt2sas_port->phy_list, port_siblings) {
643 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
644 dev_printk(KERN_INFO, &mpt2sas_port->port->dev,
645 "remove: parent_handle(0x%04x), "
646 "sas_addr(0x%016llx), phy(%d)\n", parent_handle,
647 (unsigned long long)
648 mpt2sas_port->remote_identify.sas_address,
649 mpt2sas_phy->phy_id);
650 sas_port_delete_phy(mpt2sas_port->port, mpt2sas_phy->phy);
651 list_del(&mpt2sas_phy->port_siblings);
652 }
653 sas_port_delete(mpt2sas_port->port);
654 kfree(mpt2sas_port);
655}
656
657/**
658 * mpt2sas_transport_add_host_phy - report sas_host phy to transport
659 * @ioc: per adapter object
660 * @mpt2sas_phy: mpt2sas per phy object
661 * @phy_pg0: sas phy page 0
662 * @parent_dev: parent device class object
663 *
664 * Returns 0 for success, non-zero for failure.
665 */
666int
667mpt2sas_transport_add_host_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
668 *mpt2sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
669{
670 struct sas_phy *phy;
671 int phy_index = mpt2sas_phy->phy_id;
672
673
674 INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
675 phy = sas_phy_alloc(parent_dev, phy_index);
676 if (!phy) {
677 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
678 ioc->name, __FILE__, __LINE__, __func__);
679 return -1;
680 }
681 if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
682 &mpt2sas_phy->identify))) {
683 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
684 ioc->name, __FILE__, __LINE__, __func__);
685 return -1;
686 }
687 phy->identify = mpt2sas_phy->identify;
688 mpt2sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
689 if (mpt2sas_phy->attached_handle)
690 _transport_set_identify(ioc, mpt2sas_phy->attached_handle,
691 &mpt2sas_phy->remote_identify);
692 phy->identify.phy_identifier = mpt2sas_phy->phy_id;
693 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
694 phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
695 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
696 phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
697 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
698 phy_pg0.HwLinkRate >> 4);
699 phy->minimum_linkrate = _transport_convert_phy_link_rate(
700 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
701 phy->maximum_linkrate = _transport_convert_phy_link_rate(
702 phy_pg0.ProgrammedLinkRate >> 4);
703
704 if ((sas_phy_add(phy))) {
705 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
706 ioc->name, __FILE__, __LINE__, __func__);
707 sas_phy_free(phy);
708 return -1;
709 }
710 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
711 dev_printk(KERN_INFO, &phy->dev,
712 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
713 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
714 mpt2sas_phy->handle, (unsigned long long)
715 mpt2sas_phy->identify.sas_address,
716 mpt2sas_phy->attached_handle,
717 (unsigned long long)
718 mpt2sas_phy->remote_identify.sas_address);
719 mpt2sas_phy->phy = phy;
720 return 0;
721}
722
723
724/**
725 * mpt2sas_transport_add_expander_phy - report expander phy to transport
726 * @ioc: per adapter object
727 * @mpt2sas_phy: mpt2sas per phy object
728 * @expander_pg1: expander page 1
729 * @parent_dev: parent device class object
730 *
731 * Returns 0 for success, non-zero for failure.
732 */
733int
734mpt2sas_transport_add_expander_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
735 *mpt2sas_phy, Mpi2ExpanderPage1_t expander_pg1, struct device *parent_dev)
736{
737 struct sas_phy *phy;
738 int phy_index = mpt2sas_phy->phy_id;
739
740 INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
741 phy = sas_phy_alloc(parent_dev, phy_index);
742 if (!phy) {
743 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
744 ioc->name, __FILE__, __LINE__, __func__);
745 return -1;
746 }
747 if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
748 &mpt2sas_phy->identify))) {
749 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
750 ioc->name, __FILE__, __LINE__, __func__);
751 return -1;
752 }
753 phy->identify = mpt2sas_phy->identify;
754 mpt2sas_phy->attached_handle =
755 le16_to_cpu(expander_pg1.AttachedDevHandle);
756 if (mpt2sas_phy->attached_handle)
757 _transport_set_identify(ioc, mpt2sas_phy->attached_handle,
758 &mpt2sas_phy->remote_identify);
759 phy->identify.phy_identifier = mpt2sas_phy->phy_id;
760 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
761 expander_pg1.NegotiatedLinkRate &
762 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
763 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
764 expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
765 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
766 expander_pg1.HwLinkRate >> 4);
767 phy->minimum_linkrate = _transport_convert_phy_link_rate(
768 expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
769 phy->maximum_linkrate = _transport_convert_phy_link_rate(
770 expander_pg1.ProgrammedLinkRate >> 4);
771
772 if ((sas_phy_add(phy))) {
773 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
774 ioc->name, __FILE__, __LINE__, __func__);
775 sas_phy_free(phy);
776 return -1;
777 }
778 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
779 dev_printk(KERN_INFO, &phy->dev,
780 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
781 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
782 mpt2sas_phy->handle, (unsigned long long)
783 mpt2sas_phy->identify.sas_address,
784 mpt2sas_phy->attached_handle,
785 (unsigned long long)
786 mpt2sas_phy->remote_identify.sas_address);
787 mpt2sas_phy->phy = phy;
788 return 0;
789}
790
791/**
792 * mpt2sas_transport_update_phy_link_change - refreshing phy link changes and attached devices
793 * @ioc: per adapter object
794 * @handle: handle to sas_host or expander
795 * @attached_handle: attached device handle
796 * @phy_numberv: phy number
797 * @link_rate: new link rate
798 *
799 * Returns nothing.
800 */
801void
802mpt2sas_transport_update_phy_link_change(struct MPT2SAS_ADAPTER *ioc,
803 u16 handle, u16 attached_handle, u8 phy_number, u8 link_rate)
804{
805 unsigned long flags;
806 struct _sas_node *sas_node;
807 struct _sas_phy *mpt2sas_phy;
808
809 spin_lock_irqsave(&ioc->sas_node_lock, flags);
810 sas_node = _transport_sas_node_find_by_handle(ioc, handle);
811 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
812 if (!sas_node)
813 return;
814
815 mpt2sas_phy = &sas_node->phy[phy_number];
816 mpt2sas_phy->attached_handle = attached_handle;
817 if (attached_handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5))
818 _transport_set_identify(ioc, mpt2sas_phy->attached_handle,
819 &mpt2sas_phy->remote_identify);
820 else
821 memset(&mpt2sas_phy->remote_identify, 0 , sizeof(struct
822 sas_identify));
823
824 if (mpt2sas_phy->phy)
825 mpt2sas_phy->phy->negotiated_linkrate =
826 _transport_convert_phy_link_rate(link_rate);
827
828 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
829 dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
830 "refresh: handle(0x%04x), sas_addr(0x%016llx),\n"
831 "\tlink_rate(0x%02x), phy(%d)\n"
832 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
833 handle, (unsigned long long)
834 mpt2sas_phy->identify.sas_address, link_rate,
835 phy_number, attached_handle,
836 (unsigned long long)
837 mpt2sas_phy->remote_identify.sas_address);
838}
839
840static inline void *
841phy_to_ioc(struct sas_phy *phy)
842{
843 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
844 return shost_priv(shost);
845}
846
847static inline void *
848rphy_to_ioc(struct sas_rphy *rphy)
849{
850 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
851 return shost_priv(shost);
852}
853
854/**
855 * transport_get_linkerrors -
856 * @phy: The sas phy object
857 *
858 * Only support sas_host direct attached phys.
859 * Returns 0 for success, non-zero for failure.
860 *
861 */
862static int
863transport_get_linkerrors(struct sas_phy *phy)
864{
865 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
866 struct _sas_phy *mpt2sas_phy;
867 Mpi2ConfigReply_t mpi_reply;
868 Mpi2SasPhyPage1_t phy_pg1;
869 int i;
870
871 for (i = 0, mpt2sas_phy = NULL; i < ioc->sas_hba.num_phys &&
872 !mpt2sas_phy; i++) {
873 if (ioc->sas_hba.phy[i].phy != phy)
874 continue;
875 mpt2sas_phy = &ioc->sas_hba.phy[i];
876 }
877
878 if (!mpt2sas_phy) /* this phy not on sas_host */
879 return -EINVAL;
880
881 if ((mpt2sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
882 mpt2sas_phy->phy_id))) {
883 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
884 ioc->name, __FILE__, __LINE__, __func__);
885 return -ENXIO;
886 }
887
888 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
889 printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
890 "(0x%04x), loginfo(0x%08x)\n", ioc->name,
891 mpt2sas_phy->phy_id,
892 le16_to_cpu(mpi_reply.IOCStatus),
893 le32_to_cpu(mpi_reply.IOCLogInfo));
894
895 phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
896 phy->running_disparity_error_count =
897 le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
898 phy->loss_of_dword_sync_count =
899 le32_to_cpu(phy_pg1.LossDwordSynchCount);
900 phy->phy_reset_problem_count =
901 le32_to_cpu(phy_pg1.PhyResetProblemCount);
902 return 0;
903}
904
905/**
906 * transport_get_enclosure_identifier -
907 * @phy: The sas phy object
908 *
909 * Obtain the enclosure logical id for an expander.
910 * Returns 0 for success, non-zero for failure.
911 */
912static int
913transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
914{
915 struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
916 struct _sas_node *sas_expander;
917 unsigned long flags;
918
919 spin_lock_irqsave(&ioc->sas_node_lock, flags);
920 sas_expander = mpt2sas_scsih_expander_find_by_sas_address(ioc,
921 rphy->identify.sas_address);
922 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
923
924 if (!sas_expander)
925 return -ENXIO;
926
927 *identifier = sas_expander->enclosure_logical_id;
928 return 0;
929}
930
931/**
932 * transport_get_bay_identifier -
933 * @phy: The sas phy object
934 *
935 * Returns the slot id for a device that resides inside an enclosure.
936 */
937static int
938transport_get_bay_identifier(struct sas_rphy *rphy)
939{
940 struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
941 struct _sas_device *sas_device;
942 unsigned long flags;
943
944 spin_lock_irqsave(&ioc->sas_device_lock, flags);
945 sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
946 rphy->identify.sas_address);
947 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
948
949 if (!sas_device)
950 return -ENXIO;
951
952 return sas_device->slot;
953}
954
955/**
956 * transport_phy_reset -
957 * @phy: The sas phy object
958 * @hard_reset:
959 *
960 * Only support sas_host direct attached phys.
961 * Returns 0 for success, non-zero for failure.
962 */
963static int
964transport_phy_reset(struct sas_phy *phy, int hard_reset)
965{
966 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
967 struct _sas_phy *mpt2sas_phy;
968 Mpi2SasIoUnitControlReply_t mpi_reply;
969 Mpi2SasIoUnitControlRequest_t mpi_request;
970 int i;
971
972 for (i = 0, mpt2sas_phy = NULL; i < ioc->sas_hba.num_phys &&
973 !mpt2sas_phy; i++) {
974 if (ioc->sas_hba.phy[i].phy != phy)
975 continue;
976 mpt2sas_phy = &ioc->sas_hba.phy[i];
977 }
978
979 if (!mpt2sas_phy) /* this phy not on sas_host */
980 return -EINVAL;
981
982 memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlReply_t));
983 mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
984 mpi_request.Operation = hard_reset ?
985 MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
986 mpi_request.PhyNum = mpt2sas_phy->phy_id;
987
988 if ((mpt2sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
989 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
990 ioc->name, __FILE__, __LINE__, __func__);
991 return -ENXIO;
992 }
993
994 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
995 printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
996 "(0x%04x), loginfo(0x%08x)\n", ioc->name,
997 mpt2sas_phy->phy_id,
998 le16_to_cpu(mpi_reply.IOCStatus),
999 le32_to_cpu(mpi_reply.IOCLogInfo));
1000
1001 return 0;
1002}
1003
1004/**
1005 * transport_smp_handler - transport portal for smp passthru
1006 * @shost: shost object
1007 * @rphy: sas transport rphy object
1008 * @req:
1009 *
1010 * This used primarily for smp_utils.
1011 * Example:
1012 * smp_rep_general /sys/class/bsg/expander-5:0
1013 */
1014static int
1015transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
1016 struct request *req)
1017{
1018 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
1019 Mpi2SmpPassthroughRequest_t *mpi_request;
1020 Mpi2SmpPassthroughReply_t *mpi_reply;
1021 int rc;
1022 u16 smid;
1023 u32 ioc_state;
1024 unsigned long timeleft;
1025 void *psge;
1026 u32 sgl_flags;
1027 u8 issue_reset = 0;
1028 unsigned long flags;
1029 dma_addr_t dma_addr_in = 0;
1030 dma_addr_t dma_addr_out = 0;
1031 u16 wait_state_count;
1032 struct request *rsp = req->next_rq;
1033
1034 if (!rsp) {
1035 printk(MPT2SAS_ERR_FMT "%s: the smp response space is "
1036 "missing\n", ioc->name, __func__);
1037 return -EINVAL;
1038 }
1039
1040 /* do we need to support multiple segments? */
1041 if (req->bio->bi_vcnt > 1 || rsp->bio->bi_vcnt > 1) {
1042 printk(MPT2SAS_ERR_FMT "%s: multiple segments req %u %u, "
1043 "rsp %u %u\n", ioc->name, __func__, req->bio->bi_vcnt,
b0790410 1044 blk_rq_bytes(req), rsp->bio->bi_vcnt, blk_rq_bytes(rsp));
635374e7
EM		 1045 return -EINVAL;
1046 }
1047
1048 spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
1049 if (ioc->ioc_reset_in_progress) {
1050 spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
1051 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
1052 __func__, ioc->name);
1053 return -EFAULT;
1054 }
1055 spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
1056
1057 rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
1058 if (rc)
1059 return rc;
1060
1061 if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
1062 printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n", ioc->name,
1063 __func__);
1064 rc = -EAGAIN;
1065 goto out;
1066 }
1067 ioc->transport_cmds.status = MPT2_CMD_PENDING;
1068
1069 wait_state_count = 0;
1070 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1071 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1072 if (wait_state_count++ == 10) {
1073 printk(MPT2SAS_ERR_FMT
1074 "%s: failed due to ioc not operational\n",
1075 ioc->name, __func__);
1076 rc = -EFAULT;
1077 goto out;
1078 }
1079 ssleep(1);
1080 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1081 printk(MPT2SAS_INFO_FMT "%s: waiting for "
1082 "operational state(count=%d)\n", ioc->name,
1083 __func__, wait_state_count);
1084 }
1085 if (wait_state_count)
1086 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
1087 ioc->name, __func__);
1088
1089 smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
1090 if (!smid) {
1091 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1092 ioc->name, __func__);
1093 rc = -EAGAIN;
1094 goto out;
1095 }
1096
1097 rc = 0;
1098 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1099 ioc->transport_cmds.smid = smid;
1100
1101 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1102 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1103 mpi_request->PhysicalPort = 0xFF;
1104 *((u64 *)&mpi_request->SASAddress) = (rphy) ?
1105 cpu_to_le64(rphy->identify.sas_address) :
1106 cpu_to_le64(ioc->sas_hba.sas_address);
b0790410 1107 mpi_request->RequestDataLength = cpu_to_le16(blk_rq_bytes(req) - 4);
635374e7
EM		 1108 psge = &mpi_request->SGL;
1109
1110 /* WRITE sgel first */
1111 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1112 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
1113 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1114 dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio),
b0790410 1115 blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL);
635374e7
EM		 1116 if (!dma_addr_out) {
1117 mpt2sas_base_free_smid(ioc, le16_to_cpu(smid));
1118 goto unmap;
1119 }
1120
b0790410 1121 ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(req) - 4),
635374e7
EM		 1122 dma_addr_out);
1123
1124 /* incr sgel */
1125 psge += ioc->sge_size;
1126
1127 /* READ sgel last */
1128 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1129 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
1130 MPI2_SGE_FLAGS_END_OF_LIST);
1131 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
b0790410
TH		 1132 dma_addr_in = pci_map_single(ioc->pdev, bio_data(rsp->bio),
1133 blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL);
635374e7
EM		 1134 if (!dma_addr_in) {
1135 mpt2sas_base_free_smid(ioc, le16_to_cpu(smid));
1136 goto unmap;
1137 }
1138
b0790410 1139 ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(rsp) + 4),
635374e7
EM		 1140 dma_addr_in);
1141
1142 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - "
1143 "sending smp request\n", ioc->name, __func__));
1144
1145 mpt2sas_base_put_smid_default(ioc, smid, 0 /* VF_ID */);
1146 timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
1147 10*HZ);
1148
1149 if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
1150 printk(MPT2SAS_ERR_FMT "%s : timeout\n",
1151 __func__, ioc->name);
1152 _debug_dump_mf(mpi_request,
1153 sizeof(Mpi2SmpPassthroughRequest_t)/4);
1154 if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
1155 issue_reset = 1;
1156 goto issue_host_reset;
1157 }
1158
1159 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - "
1160 "complete\n", ioc->name, __func__));
1161
1162 if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
1163
1164 mpi_reply = ioc->transport_cmds.reply;
1165
1166 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
1167 "%s - reply data transfer size(%d)\n",
1168 ioc->name, __func__,
1169 le16_to_cpu(mpi_reply->ResponseDataLength)));
1170
1171 memcpy(req->sense, mpi_reply, sizeof(*mpi_reply));
1172 req->sense_len = sizeof(*mpi_reply);
b0790410
TH		 1173 rsp->resid_len = blk_rq_bytes(rsp) -
1174 mpi_reply->ResponseDataLength;
635374e7
EM		 1175 } else {
1176 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
1177 "%s - no reply\n", ioc->name, __func__));
1178 rc = -ENXIO;
1179 }
1180
1181 issue_host_reset:
1182 if (issue_reset) {
1183 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1184 FORCE_BIG_HAMMER);
1185 rc = -ETIMEDOUT;
1186 }
1187
1188 unmap:
1189 if (dma_addr_out)
b0790410 1190 pci_unmap_single(ioc->pdev, dma_addr_out, blk_rq_bytes(req),
635374e7
EM		 1191 PCI_DMA_BIDIRECTIONAL);
1192 if (dma_addr_in)
b0790410 1193 pci_unmap_single(ioc->pdev, dma_addr_in, blk_rq_bytes(rsp),
635374e7
EM		 1194 PCI_DMA_BIDIRECTIONAL);
1195
1196 out:
1197 ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
1198 mutex_unlock(&ioc->transport_cmds.mutex);
1199 return rc;
1200}
1201
1202struct sas_function_template mpt2sas_transport_functions = {
1203 .get_linkerrors = transport_get_linkerrors,
1204 .get_enclosure_identifier = transport_get_enclosure_identifier,
1205 .get_bay_identifier = transport_get_bay_identifier,
1206 .phy_reset = transport_phy_reset,
1207 .smp_handler = transport_smp_handler,
1208};
1209
1210struct scsi_transport_template *mpt2sas_transport_template;
Linux 6.x block layer and io_uring tree(s)