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Merge branch 'bkl/procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic...
[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
19d3ebe3 5 * Copyright (C) 2007-2009 LSI Corporation
635374e7
EM		 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>
5a0e3ad6 52#include <linux/slab.h>
635374e7
EM		 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/**
c5e039be 63 * _transport_sas_node_find_by_sas_address - sas node search
635374e7 64 * @ioc: per adapter object
c5e039be 65 * @sas_address: sas address of expander or sas host
635374e7
EM		 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 */
71static struct _sas_node *
c5e039be
KD		 72_transport_sas_node_find_by_sas_address(struct MPT2SAS_ADAPTER *ioc,
73 u64 sas_address)
635374e7 74{
c5e039be
KD		 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);
635374e7
EM		 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
155dd4c7
KD		 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
635374e7
EM		 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",
155dd4c7 152
635374e7 153 ioc->name, __FILE__, __LINE__, __func__);
155dd4c7 154 return -ENXIO;
635374e7
EM		 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__);
155dd4c7 163 return -EIO;
635374e7
EM		 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
7b936b02 215 * @msix_index: MSIX table index supplied by the OS
635374e7
EM		 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 *
77e63ed4
KD		 221 * Return 1 meaning mf should be freed from _base_interrupt
222 * 0 means the mf is freed from this function.
635374e7 223 */
77e63ed4 224u8
7b936b02 225mpt2sas_transport_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
635374e7
EM		 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)
77e63ed4 232 return 1;
635374e7 233 if (ioc->transport_cmds.smid != smid)
77e63ed4 234 return 1;
635374e7
EM		 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);
77e63ed4 243 return 1;
635374e7
EM		 244}
245
246/* report manufacture request structure */
247struct 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 */
255struct 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];
463217bf 262 u8 sas_format;
635374e7
EM		 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/**
d5d135b3 275 * _transport_expander_report_manufacture - obtain SMP report_manufacture
635374e7
EM		 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 */
284static int
d5d135b3 285_transport_expander_report_manufacture(struct MPT2SAS_ADAPTER *ioc,
635374e7
EM		 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;
635374e7
EM		 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
155dd4c7 305 if (ioc->shost_recovery) {
635374e7
EM		 306 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
307 __func__, ioc->name);
308 return -EFAULT;
309 }
635374e7
EM		 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;
7b936b02
KD		 373 mpi_request->VF_ID = 0; /* TODO */
374 mpi_request->VP_ID = 0;
635374e7
EM		 375 sas_address_le = (u64 *)&mpi_request->SASAddress;
376 *sas_address_le = cpu_to_le64(sas_address);
463217bf
KD		 377 mpi_request->RequestDataLength =
378 cpu_to_le16(sizeof(struct rep_manu_request));
635374e7
EM		 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));
7b936b02 403 mpt2sas_base_put_smid_default(ioc, smid);
bcfb6e6e 404 init_completion(&ioc->transport_cmds.done);
635374e7
EM		 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);
463217bf
KD		 441 edev->level = manufacture_reply->sas_format & 1;
442 if (edev->level) {
635374e7
EM		 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
c5e039be 472 * @sas_address: sas address of parent expander or sas host
635374e7
EM		 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 */
479struct _sas_port *
480mpt2sas_transport_port_add(struct MPT2SAS_ADAPTER *ioc, u16 handle,
c5e039be 481 u64 sas_address)
635374e7
EM		 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
635374e7
EM		 491 mpt2sas_port = kzalloc(sizeof(struct _sas_port),
492 GFP_KERNEL);
493 if (!mpt2sas_port) {
494 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
495 ioc->name, __FILE__, __LINE__, __func__);
496 return NULL;
497 }
498
499 INIT_LIST_HEAD(&mpt2sas_port->port_list);
500 INIT_LIST_HEAD(&mpt2sas_port->phy_list);
501 spin_lock_irqsave(&ioc->sas_node_lock, flags);
c5e039be 502 sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
635374e7
EM		 503 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
504
505 if (!sas_node) {
c5e039be
KD		 506 printk(MPT2SAS_ERR_FMT "%s: Could not find "
507 "parent sas_address(0x%016llx)!\n", ioc->name,
508 __func__, (unsigned long long)sas_address);
635374e7
EM		 509 goto out_fail;
510 }
511
635374e7
EM		 512 if ((_transport_set_identify(ioc, handle,
513 &mpt2sas_port->remote_identify))) {
514 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
515 ioc->name, __FILE__, __LINE__, __func__);
516 goto out_fail;
517 }
518
519 if (mpt2sas_port->remote_identify.device_type == SAS_PHY_UNUSED) {
520 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
521 ioc->name, __FILE__, __LINE__, __func__);
522 goto out_fail;
523 }
524
525 for (i = 0; i < sas_node->num_phys; i++) {
526 if (sas_node->phy[i].remote_identify.sas_address !=
527 mpt2sas_port->remote_identify.sas_address)
528 continue;
529 list_add_tail(&sas_node->phy[i].port_siblings,
530 &mpt2sas_port->phy_list);
531 mpt2sas_port->num_phys++;
532 }
533
534 if (!mpt2sas_port->num_phys) {
535 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
536 ioc->name, __FILE__, __LINE__, __func__);
537 goto out_fail;
538 }
539
540 port = sas_port_alloc_num(sas_node->parent_dev);
541 if ((sas_port_add(port))) {
542 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
543 ioc->name, __FILE__, __LINE__, __func__);
544 goto out_fail;
545 }
546
547 list_for_each_entry(mpt2sas_phy, &mpt2sas_port->phy_list,
548 port_siblings) {
549 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
550 dev_printk(KERN_INFO, &port->dev, "add: handle(0x%04x)"
551 ", sas_addr(0x%016llx), phy(%d)\n", handle,
552 (unsigned long long)
553 mpt2sas_port->remote_identify.sas_address,
554 mpt2sas_phy->phy_id);
555 sas_port_add_phy(port, mpt2sas_phy->phy);
556 }
557
558 mpt2sas_port->port = port;
559 if (mpt2sas_port->remote_identify.device_type == SAS_END_DEVICE)
560 rphy = sas_end_device_alloc(port);
561 else
562 rphy = sas_expander_alloc(port,
563 mpt2sas_port->remote_identify.device_type);
564
565 rphy->identify = mpt2sas_port->remote_identify;
566 if ((sas_rphy_add(rphy))) {
567 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
568 ioc->name, __FILE__, __LINE__, __func__);
569 }
570 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
571 dev_printk(KERN_INFO, &rphy->dev, "add: handle(0x%04x), "
572 "sas_addr(0x%016llx)\n", handle,
573 (unsigned long long)
574 mpt2sas_port->remote_identify.sas_address);
575 mpt2sas_port->rphy = rphy;
576 spin_lock_irqsave(&ioc->sas_node_lock, flags);
577 list_add_tail(&mpt2sas_port->port_list, &sas_node->sas_port_list);
578 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
579
580 /* fill in report manufacture */
581 if (mpt2sas_port->remote_identify.device_type ==
582 MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
583 mpt2sas_port->remote_identify.device_type ==
584 MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
d5d135b3 585 _transport_expander_report_manufacture(ioc,
635374e7
EM		 586 mpt2sas_port->remote_identify.sas_address,
587 rphy_to_expander_device(rphy));
588
589 return mpt2sas_port;
590
591 out_fail:
592 list_for_each_entry_safe(mpt2sas_phy, next, &mpt2sas_port->phy_list,
593 port_siblings)
594 list_del(&mpt2sas_phy->port_siblings);
595 kfree(mpt2sas_port);
596 return NULL;
597}
598
599/**
600 * mpt2sas_transport_port_remove - remove port from the list
601 * @ioc: per adapter object
602 * @sas_address: sas address of attached device
c5e039be 603 * @sas_address_parent: sas address of parent expander or sas host
635374e7
EM		 604 * Context: This function will acquire ioc->sas_node_lock.
605 *
606 * Removing object and freeing associated memory from the
607 * ioc->sas_port_list.
608 *
609 * Return nothing.
610 */
611void
612mpt2sas_transport_port_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address,
c5e039be 613 u64 sas_address_parent)
635374e7
EM		 614{
615 int i;
616 unsigned long flags;
617 struct _sas_port *mpt2sas_port, *next;
618 struct _sas_node *sas_node;
619 u8 found = 0;
620 struct _sas_phy *mpt2sas_phy, *next_phy;
621
622 spin_lock_irqsave(&ioc->sas_node_lock, flags);
c5e039be
KD		 623 sas_node = _transport_sas_node_find_by_sas_address(ioc,
624 sas_address_parent);
635374e7
EM		 625 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
626 if (!sas_node)
627 return;
628 list_for_each_entry_safe(mpt2sas_port, next, &sas_node->sas_port_list,
629 port_list) {
630 if (mpt2sas_port->remote_identify.sas_address != sas_address)
631 continue;
632 found = 1;
633 list_del(&mpt2sas_port->port_list);
634 goto out;
635 }
636 out:
637 if (!found)
638 return;
639
640 for (i = 0; i < sas_node->num_phys; i++) {
641 if (sas_node->phy[i].remote_identify.sas_address == sas_address)
642 memset(&sas_node->phy[i].remote_identify, 0 ,
643 sizeof(struct sas_identify));
644 }
645
646 list_for_each_entry_safe(mpt2sas_phy, next_phy,
647 &mpt2sas_port->phy_list, port_siblings) {
648 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
649 dev_printk(KERN_INFO, &mpt2sas_port->port->dev,
c5e039be 650 "remove: sas_addr(0x%016llx), phy(%d)\n",
635374e7
EM		 651 (unsigned long long)
652 mpt2sas_port->remote_identify.sas_address,
653 mpt2sas_phy->phy_id);
654 sas_port_delete_phy(mpt2sas_port->port, mpt2sas_phy->phy);
655 list_del(&mpt2sas_phy->port_siblings);
656 }
657 sas_port_delete(mpt2sas_port->port);
658 kfree(mpt2sas_port);
659}
660
661/**
662 * mpt2sas_transport_add_host_phy - report sas_host phy to transport
663 * @ioc: per adapter object
664 * @mpt2sas_phy: mpt2sas per phy object
665 * @phy_pg0: sas phy page 0
666 * @parent_dev: parent device class object
667 *
668 * Returns 0 for success, non-zero for failure.
669 */
670int
671mpt2sas_transport_add_host_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
672 *mpt2sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
673{
674 struct sas_phy *phy;
675 int phy_index = mpt2sas_phy->phy_id;
676
677
678 INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
679 phy = sas_phy_alloc(parent_dev, phy_index);
680 if (!phy) {
681 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
682 ioc->name, __FILE__, __LINE__, __func__);
683 return -1;
684 }
685 if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
686 &mpt2sas_phy->identify))) {
687 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
688 ioc->name, __FILE__, __LINE__, __func__);
689 return -1;
690 }
691 phy->identify = mpt2sas_phy->identify;
692 mpt2sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
693 if (mpt2sas_phy->attached_handle)
694 _transport_set_identify(ioc, mpt2sas_phy->attached_handle,
695 &mpt2sas_phy->remote_identify);
696 phy->identify.phy_identifier = mpt2sas_phy->phy_id;
697 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
698 phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
699 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
700 phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
701 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
702 phy_pg0.HwLinkRate >> 4);
703 phy->minimum_linkrate = _transport_convert_phy_link_rate(
704 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
705 phy->maximum_linkrate = _transport_convert_phy_link_rate(
706 phy_pg0.ProgrammedLinkRate >> 4);
707
708 if ((sas_phy_add(phy))) {
709 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
710 ioc->name, __FILE__, __LINE__, __func__);
711 sas_phy_free(phy);
712 return -1;
713 }
714 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
715 dev_printk(KERN_INFO, &phy->dev,
716 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
717 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
718 mpt2sas_phy->handle, (unsigned long long)
719 mpt2sas_phy->identify.sas_address,
720 mpt2sas_phy->attached_handle,
721 (unsigned long long)
722 mpt2sas_phy->remote_identify.sas_address);
723 mpt2sas_phy->phy = phy;
724 return 0;
725}
726
727
728/**
729 * mpt2sas_transport_add_expander_phy - report expander phy to transport
730 * @ioc: per adapter object
731 * @mpt2sas_phy: mpt2sas per phy object
732 * @expander_pg1: expander page 1
733 * @parent_dev: parent device class object
734 *
735 * Returns 0 for success, non-zero for failure.
736 */
737int
738mpt2sas_transport_add_expander_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
739 *mpt2sas_phy, Mpi2ExpanderPage1_t expander_pg1, struct device *parent_dev)
740{
741 struct sas_phy *phy;
742 int phy_index = mpt2sas_phy->phy_id;
743
744 INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
745 phy = sas_phy_alloc(parent_dev, phy_index);
746 if (!phy) {
747 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
748 ioc->name, __FILE__, __LINE__, __func__);
749 return -1;
750 }
751 if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
752 &mpt2sas_phy->identify))) {
753 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
754 ioc->name, __FILE__, __LINE__, __func__);
755 return -1;
756 }
757 phy->identify = mpt2sas_phy->identify;
758 mpt2sas_phy->attached_handle =
759 le16_to_cpu(expander_pg1.AttachedDevHandle);
760 if (mpt2sas_phy->attached_handle)
761 _transport_set_identify(ioc, mpt2sas_phy->attached_handle,
762 &mpt2sas_phy->remote_identify);
763 phy->identify.phy_identifier = mpt2sas_phy->phy_id;
764 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
765 expander_pg1.NegotiatedLinkRate &
766 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
767 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
768 expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
769 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
770 expander_pg1.HwLinkRate >> 4);
771 phy->minimum_linkrate = _transport_convert_phy_link_rate(
772 expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
773 phy->maximum_linkrate = _transport_convert_phy_link_rate(
774 expander_pg1.ProgrammedLinkRate >> 4);
775
776 if ((sas_phy_add(phy))) {
777 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
778 ioc->name, __FILE__, __LINE__, __func__);
779 sas_phy_free(phy);
780 return -1;
781 }
782 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
783 dev_printk(KERN_INFO, &phy->dev,
784 "add: handle(0x%04x), sas_addr(0x%016llx)\n"
785 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
786 mpt2sas_phy->handle, (unsigned long long)
787 mpt2sas_phy->identify.sas_address,
788 mpt2sas_phy->attached_handle,
789 (unsigned long long)
790 mpt2sas_phy->remote_identify.sas_address);
791 mpt2sas_phy->phy = phy;
792 return 0;
793}
794
795/**
cc0f5207 796 * mpt2sas_transport_update_links - refreshing phy link changes
635374e7 797 * @ioc: per adapter object
c5e039be
KD		 798 * @sas_address: sas address of parent expander or sas host
799 * @handle: attached device handle
635374e7
EM		 800 * @phy_numberv: phy number
801 * @link_rate: new link rate
802 *
803 * Returns nothing.
804 */
805void
cc0f5207 806mpt2sas_transport_update_links(struct MPT2SAS_ADAPTER *ioc,
c5e039be 807 u64 sas_address, u16 handle, u8 phy_number, u8 link_rate)
635374e7
EM		 808{
809 unsigned long flags;
810 struct _sas_node *sas_node;
811 struct _sas_phy *mpt2sas_phy;
812
c5e039be 813 if (ioc->shost_recovery)
155dd4c7 814 return;
155dd4c7 815
635374e7 816 spin_lock_irqsave(&ioc->sas_node_lock, flags);
c5e039be 817 sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
635374e7
EM		 818 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
819 if (!sas_node)
820 return;
821
822 mpt2sas_phy = &sas_node->phy[phy_number];
c5e039be
KD		 823 mpt2sas_phy->attached_handle = handle;
824 if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5))
825 _transport_set_identify(ioc, handle,
635374e7
EM		 826 &mpt2sas_phy->remote_identify);
827 else
828 memset(&mpt2sas_phy->remote_identify, 0 , sizeof(struct
829 sas_identify));
830
831 if (mpt2sas_phy->phy)
832 mpt2sas_phy->phy->negotiated_linkrate =
833 _transport_convert_phy_link_rate(link_rate);
834
835 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
836 dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
c5e039be 837 "refresh: parent sas_addr(0x%016llx),\n"
635374e7
EM		 838 "\tlink_rate(0x%02x), phy(%d)\n"
839 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
c5e039be
KD		 840 (unsigned long long)sas_address,
841 link_rate, phy_number, handle, (unsigned long long)
635374e7
EM		 842 mpt2sas_phy->remote_identify.sas_address);
843}
844
845static inline void *
846phy_to_ioc(struct sas_phy *phy)
847{
848 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
849 return shost_priv(shost);
850}
851
852static inline void *
853rphy_to_ioc(struct sas_rphy *rphy)
854{
855 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
856 return shost_priv(shost);
857}
858
50d5c606
KD		 859static struct _sas_phy *
860_transport_find_local_phy(struct MPT2SAS_ADAPTER *ioc, struct sas_phy *phy)
861{
862 int i;
863
864 for (i = 0; i < ioc->sas_hba.num_phys; i++)
865 if (ioc->sas_hba.phy[i].phy == phy)
866 return(&ioc->sas_hba.phy[i]);
867 return NULL;
868}
869
635374e7 870/**
d5d135b3 871 * _transport_get_linkerrors -
635374e7
EM		 872 * @phy: The sas phy object
873 *
874 * Only support sas_host direct attached phys.
875 * Returns 0 for success, non-zero for failure.
876 *
877 */
878static int
d5d135b3 879_transport_get_linkerrors(struct sas_phy *phy)
635374e7
EM		 880{
881 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
882 struct _sas_phy *mpt2sas_phy;
883 Mpi2ConfigReply_t mpi_reply;
884 Mpi2SasPhyPage1_t phy_pg1;
635374e7 885
50d5c606 886 mpt2sas_phy = _transport_find_local_phy(ioc, phy);
635374e7
EM		 887
888 if (!mpt2sas_phy) /* this phy not on sas_host */
889 return -EINVAL;
890
891 if ((mpt2sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
892 mpt2sas_phy->phy_id))) {
893 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
894 ioc->name, __FILE__, __LINE__, __func__);
895 return -ENXIO;
896 }
897
898 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
899 printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
900 "(0x%04x), loginfo(0x%08x)\n", ioc->name,
901 mpt2sas_phy->phy_id,
902 le16_to_cpu(mpi_reply.IOCStatus),
903 le32_to_cpu(mpi_reply.IOCLogInfo));
904
905 phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
906 phy->running_disparity_error_count =
907 le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
908 phy->loss_of_dword_sync_count =
909 le32_to_cpu(phy_pg1.LossDwordSynchCount);
910 phy->phy_reset_problem_count =
911 le32_to_cpu(phy_pg1.PhyResetProblemCount);
912 return 0;
913}
914
915/**
d5d135b3 916 * _transport_get_enclosure_identifier -
635374e7
EM		 917 * @phy: The sas phy object
918 *
919 * Obtain the enclosure logical id for an expander.
920 * Returns 0 for success, non-zero for failure.
921 */
922static int
d5d135b3 923_transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
635374e7
EM		 924{
925 struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
926 struct _sas_node *sas_expander;
927 unsigned long flags;
928
929 spin_lock_irqsave(&ioc->sas_node_lock, flags);
930 sas_expander = mpt2sas_scsih_expander_find_by_sas_address(ioc,
931 rphy->identify.sas_address);
932 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
933
934 if (!sas_expander)
935 return -ENXIO;
936
937 *identifier = sas_expander->enclosure_logical_id;
938 return 0;
939}
940
941/**
d5d135b3 942 * _transport_get_bay_identifier -
635374e7
EM		 943 * @phy: The sas phy object
944 *
945 * Returns the slot id for a device that resides inside an enclosure.
946 */
947static int
d5d135b3 948_transport_get_bay_identifier(struct sas_rphy *rphy)
635374e7
EM		 949{
950 struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
951 struct _sas_device *sas_device;
952 unsigned long flags;
953
954 spin_lock_irqsave(&ioc->sas_device_lock, flags);
955 sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
956 rphy->identify.sas_address);
957 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
958
959 if (!sas_device)
960 return -ENXIO;
961
962 return sas_device->slot;
963}
964
965/**
d5d135b3 966 * _transport_phy_reset -
635374e7
EM		 967 * @phy: The sas phy object
968 * @hard_reset:
969 *
970 * Only support sas_host direct attached phys.
971 * Returns 0 for success, non-zero for failure.
972 */
973static int
d5d135b3 974_transport_phy_reset(struct sas_phy *phy, int hard_reset)
635374e7
EM		 975{
976 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
977 struct _sas_phy *mpt2sas_phy;
978 Mpi2SasIoUnitControlReply_t mpi_reply;
979 Mpi2SasIoUnitControlRequest_t mpi_request;
635374e7 980
50d5c606 981 mpt2sas_phy = _transport_find_local_phy(ioc, phy);
635374e7
EM		 982
983 if (!mpt2sas_phy) /* this phy not on sas_host */
984 return -EINVAL;
985
986 memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlReply_t));
987 mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
988 mpi_request.Operation = hard_reset ?
989 MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
990 mpi_request.PhyNum = mpt2sas_phy->phy_id;
991
992 if ((mpt2sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
993 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
994 ioc->name, __FILE__, __LINE__, __func__);
995 return -ENXIO;
996 }
997
998 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
999 printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
1000 "(0x%04x), loginfo(0x%08x)\n", ioc->name,
1001 mpt2sas_phy->phy_id,
1002 le16_to_cpu(mpi_reply.IOCStatus),
1003 le32_to_cpu(mpi_reply.IOCLogInfo));
1004
1005 return 0;
1006}
1007
50d5c606
KD		 1008/**
1009 * _transport_phy_enable - enable/disable phys
1010 * @phy: The sas phy object
1011 * @enable: enable phy when true
1012 *
1013 * Only support sas_host direct attached phys.
1014 * Returns 0 for success, non-zero for failure.
1015 */
1016static int
1017_transport_phy_enable(struct sas_phy *phy, int enable)
1018{
1019 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
1020 struct _sas_phy *mpt2sas_phy;
1021 Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1022 Mpi2ConfigReply_t mpi_reply;
1023 u16 ioc_status;
1024 u16 sz;
1025 int rc = 0;
1026
1027 mpt2sas_phy = _transport_find_local_phy(ioc, phy);
1028
1029 if (!mpt2sas_phy) /* this phy not on sas_host */
1030 return -EINVAL;
1031
1032 /* sas_iounit page 1 */
1033 sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1034 sizeof(Mpi2SasIOUnit1PhyData_t));
1035 sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1036 if (!sas_iounit_pg1) {
1037 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1038 ioc->name, __FILE__, __LINE__, __func__);
1039 rc = -ENOMEM;
1040 goto out;
1041 }
1042 if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1043 sas_iounit_pg1, sz))) {
1044 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1045 ioc->name, __FILE__, __LINE__, __func__);
1046 rc = -ENXIO;
1047 goto out;
1048 }
1049 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1050 MPI2_IOCSTATUS_MASK;
1051 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1052 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1053 ioc->name, __FILE__, __LINE__, __func__);
1054 rc = -EIO;
1055 goto out;
1056 }
1057
1058 if (enable)
1059 sas_iounit_pg1->PhyData[mpt2sas_phy->phy_id].PhyFlags
1060 &= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1061 else
1062 sas_iounit_pg1->PhyData[mpt2sas_phy->phy_id].PhyFlags
1063 |= MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1064
1065 mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, sz);
1066
1067 out:
1068 kfree(sas_iounit_pg1);
1069 return rc;
1070}
1071
1072/**
1073 * _transport_phy_speed - set phy min/max link rates
1074 * @phy: The sas phy object
1075 * @rates: rates defined in sas_phy_linkrates
1076 *
1077 * Only support sas_host direct attached phys.
1078 * Returns 0 for success, non-zero for failure.
1079 */
1080static int
1081_transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
1082{
1083 struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
1084 struct _sas_phy *mpt2sas_phy;
1085 Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1086 Mpi2SasPhyPage0_t phy_pg0;
1087 Mpi2ConfigReply_t mpi_reply;
1088 u16 ioc_status;
1089 u16 sz;
1090 int i;
1091 int rc = 0;
1092
1093 mpt2sas_phy = _transport_find_local_phy(ioc, phy);
1094
1095 if (!mpt2sas_phy) /* this phy not on sas_host */
1096 return -EINVAL;
1097
1098 if (!rates->minimum_linkrate)
1099 rates->minimum_linkrate = phy->minimum_linkrate;
1100 else if (rates->minimum_linkrate < phy->minimum_linkrate_hw)
1101 rates->minimum_linkrate = phy->minimum_linkrate_hw;
1102
1103 if (!rates->maximum_linkrate)
1104 rates->maximum_linkrate = phy->maximum_linkrate;
1105 else if (rates->maximum_linkrate > phy->maximum_linkrate_hw)
1106 rates->maximum_linkrate = phy->maximum_linkrate_hw;
1107
1108 /* sas_iounit page 1 */
1109 sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1110 sizeof(Mpi2SasIOUnit1PhyData_t));
1111 sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1112 if (!sas_iounit_pg1) {
1113 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1114 ioc->name, __FILE__, __LINE__, __func__);
1115 rc = -ENOMEM;
1116 goto out;
1117 }
1118 if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1119 sas_iounit_pg1, sz))) {
1120 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1121 ioc->name, __FILE__, __LINE__, __func__);
1122 rc = -ENXIO;
1123 goto out;
1124 }
1125 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1126 MPI2_IOCSTATUS_MASK;
1127 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1128 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1129 ioc->name, __FILE__, __LINE__, __func__);
1130 rc = -EIO;
1131 goto out;
1132 }
1133
1134 for (i = 0; i < ioc->sas_hba.num_phys; i++) {
1135 if (mpt2sas_phy->phy_id != i) {
1136 sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1137 (ioc->sas_hba.phy[i].phy->minimum_linkrate +
1138 (ioc->sas_hba.phy[i].phy->maximum_linkrate << 4));
1139 } else {
1140 sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1141 (rates->minimum_linkrate +
1142 (rates->maximum_linkrate << 4));
1143 }
1144 }
1145
1146 if (mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
1147 sz)) {
1148 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1149 ioc->name, __FILE__, __LINE__, __func__);
1150 rc = -ENXIO;
1151 goto out;
1152 }
1153
1154 /* link reset */
1155 _transport_phy_reset(phy, 0);
1156
1157 /* read phy page 0, then update the rates in the sas transport phy */
1158 if (!mpt2sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
1159 mpt2sas_phy->phy_id)) {
1160 phy->minimum_linkrate = _transport_convert_phy_link_rate(
1161 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1162 phy->maximum_linkrate = _transport_convert_phy_link_rate(
1163 phy_pg0.ProgrammedLinkRate >> 4);
1164 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1165 phy_pg0.NegotiatedLinkRate &
1166 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1167 }
1168
1169 out:
1170 kfree(sas_iounit_pg1);
1171 return rc;
1172}
1173
1174
635374e7 1175/**
d5d135b3 1176 * _transport_smp_handler - transport portal for smp passthru
635374e7
EM		 1177 * @shost: shost object
1178 * @rphy: sas transport rphy object
1179 * @req:
1180 *
1181 * This used primarily for smp_utils.
1182 * Example:
1183 * smp_rep_general /sys/class/bsg/expander-5:0
1184 */
1185static int
d5d135b3 1186_transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
635374e7
EM		 1187 struct request *req)
1188{
1189 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
1190 Mpi2SmpPassthroughRequest_t *mpi_request;
1191 Mpi2SmpPassthroughReply_t *mpi_reply;
1192 int rc;
1193 u16 smid;
1194 u32 ioc_state;
1195 unsigned long timeleft;
1196 void *psge;
1197 u32 sgl_flags;
1198 u8 issue_reset = 0;
635374e7
EM		 1199 dma_addr_t dma_addr_in = 0;
1200 dma_addr_t dma_addr_out = 0;
1201 u16 wait_state_count;
1202 struct request *rsp = req->next_rq;
1203
1204 if (!rsp) {
1205 printk(MPT2SAS_ERR_FMT "%s: the smp response space is "
1206 "missing\n", ioc->name, __func__);
1207 return -EINVAL;
1208 }
1209
1210 /* do we need to support multiple segments? */
1211 if (req->bio->bi_vcnt > 1 || rsp->bio->bi_vcnt > 1) {
1212 printk(MPT2SAS_ERR_FMT "%s: multiple segments req %u %u, "
1213 "rsp %u %u\n", ioc->name, __func__, req->bio->bi_vcnt,
b0790410 1214 blk_rq_bytes(req), rsp->bio->bi_vcnt, blk_rq_bytes(rsp));
635374e7
EM		 1215 return -EINVAL;
1216 }
1217
155dd4c7 1218 if (ioc->shost_recovery) {
635374e7
EM		 1219 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
1220 __func__, ioc->name);
1221 return -EFAULT;
1222 }
635374e7
EM		 1223
1224 rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
1225 if (rc)
1226 return rc;
1227
1228 if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
1229 printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n", ioc->name,
1230 __func__);
1231 rc = -EAGAIN;
1232 goto out;
1233 }
1234 ioc->transport_cmds.status = MPT2_CMD_PENDING;
1235
1236 wait_state_count = 0;
1237 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1238 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1239 if (wait_state_count++ == 10) {
1240 printk(MPT2SAS_ERR_FMT
1241 "%s: failed due to ioc not operational\n",
1242 ioc->name, __func__);
1243 rc = -EFAULT;
1244 goto out;
1245 }
1246 ssleep(1);
1247 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1248 printk(MPT2SAS_INFO_FMT "%s: waiting for "
1249 "operational state(count=%d)\n", ioc->name,
1250 __func__, wait_state_count);
1251 }
1252 if (wait_state_count)
1253 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
1254 ioc->name, __func__);
1255
1256 smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
1257 if (!smid) {
1258 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1259 ioc->name, __func__);
1260 rc = -EAGAIN;
1261 goto out;
1262 }
1263
1264 rc = 0;
1265 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1266 ioc->transport_cmds.smid = smid;
1267
1268 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1269 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1270 mpi_request->PhysicalPort = 0xFF;
7b936b02
KD		 1271 mpi_request->VF_ID = 0; /* TODO */
1272 mpi_request->VP_ID = 0;
635374e7
EM		 1273 *((u64 *)&mpi_request->SASAddress) = (rphy) ?
1274 cpu_to_le64(rphy->identify.sas_address) :
1275 cpu_to_le64(ioc->sas_hba.sas_address);
b0790410 1276 mpi_request->RequestDataLength = cpu_to_le16(blk_rq_bytes(req) - 4);
635374e7
EM		 1277 psge = &mpi_request->SGL;
1278
1279 /* WRITE sgel first */
1280 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1281 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
1282 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1283 dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio),
b0790410 1284 blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL);
635374e7 1285 if (!dma_addr_out) {
463217bf 1286 mpt2sas_base_free_smid(ioc, smid);
635374e7
EM		 1287 goto unmap;
1288 }
1289
b0790410 1290 ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(req) - 4),
635374e7
EM		 1291 dma_addr_out);
1292
1293 /* incr sgel */
1294 psge += ioc->sge_size;
1295
1296 /* READ sgel last */
1297 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1298 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
1299 MPI2_SGE_FLAGS_END_OF_LIST);
1300 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
b0790410
TH		 1301 dma_addr_in = pci_map_single(ioc->pdev, bio_data(rsp->bio),
1302 blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL);
635374e7 1303 if (!dma_addr_in) {
463217bf 1304 mpt2sas_base_free_smid(ioc, smid);
635374e7
EM		 1305 goto unmap;
1306 }
1307
b0790410 1308 ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(rsp) + 4),
635374e7
EM		 1309 dma_addr_in);
1310
1311 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - "
1312 "sending smp request\n", ioc->name, __func__));
1313
7b936b02 1314 mpt2sas_base_put_smid_default(ioc, smid);
bcfb6e6e 1315 init_completion(&ioc->transport_cmds.done);
635374e7
EM		 1316 timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
1317 10*HZ);
1318
1319 if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
1320 printk(MPT2SAS_ERR_FMT "%s : timeout\n",
1321 __func__, ioc->name);
1322 _debug_dump_mf(mpi_request,
1323 sizeof(Mpi2SmpPassthroughRequest_t)/4);
1324 if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
1325 issue_reset = 1;
1326 goto issue_host_reset;
1327 }
1328
1329 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - "
1330 "complete\n", ioc->name, __func__));
1331
1332 if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
1333
1334 mpi_reply = ioc->transport_cmds.reply;
1335
1336 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
1337 "%s - reply data transfer size(%d)\n",
1338 ioc->name, __func__,
1339 le16_to_cpu(mpi_reply->ResponseDataLength)));
1340
1341 memcpy(req->sense, mpi_reply, sizeof(*mpi_reply));
1342 req->sense_len = sizeof(*mpi_reply);
5f49f631
TH		 1343 req->resid_len = 0;
1344 rsp->resid_len -= mpi_reply->ResponseDataLength;
635374e7
EM		 1345 } else {
1346 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
1347 "%s - no reply\n", ioc->name, __func__));
1348 rc = -ENXIO;
1349 }
1350
1351 issue_host_reset:
1352 if (issue_reset) {
1353 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1354 FORCE_BIG_HAMMER);
1355 rc = -ETIMEDOUT;
1356 }
1357
1358 unmap:
1359 if (dma_addr_out)
b0790410 1360 pci_unmap_single(ioc->pdev, dma_addr_out, blk_rq_bytes(req),
635374e7
EM		 1361 PCI_DMA_BIDIRECTIONAL);
1362 if (dma_addr_in)
b0790410 1363 pci_unmap_single(ioc->pdev, dma_addr_in, blk_rq_bytes(rsp),
635374e7
EM		 1364 PCI_DMA_BIDIRECTIONAL);
1365
1366 out:
1367 ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
1368 mutex_unlock(&ioc->transport_cmds.mutex);
1369 return rc;
1370}
1371
1372struct sas_function_template mpt2sas_transport_functions = {
d5d135b3
EM		 1373 .get_linkerrors = _transport_get_linkerrors,
1374 .get_enclosure_identifier = _transport_get_enclosure_identifier,
1375 .get_bay_identifier = _transport_get_bay_identifier,
1376 .phy_reset = _transport_phy_reset,
50d5c606
KD		 1377 .phy_enable = _transport_phy_enable,
1378 .set_phy_speed = _transport_phy_speed,
d5d135b3 1379 .smp_handler = _transport_smp_handler,
635374e7
EM		 1380};
1381
1382struct scsi_transport_template *mpt2sas_transport_template;
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