xref: /linux/drivers/scsi/mpt3sas/mpt3sas_scsih.c (revision bcb63314e2c23f1ed622418b65f9409512659c73)
1 /*
2  * Scsi Host Layer for MPT (Message Passing Technology) based controllers
3  *
4  * This code is based on drivers/scsi/mpt3sas/mpt3sas_scsih.c
5  * Copyright (C) 2012-2014  LSI Corporation
6  * Copyright (C) 2013-2014 Avago Technologies
7  *  (mailto: MPT-FusionLinux.pdl@avagotech.com)
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License
11  * as published by the Free Software Foundation; either version 2
12  * of the License, or (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * NO WARRANTY
20  * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
21  * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
22  * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
23  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
24  * solely responsible for determining the appropriateness of using and
25  * distributing the Program and assumes all risks associated with its
26  * exercise of rights under this Agreement, including but not limited to
27  * the risks and costs of program errors, damage to or loss of data,
28  * programs or equipment, and unavailability or interruption of operations.
29 
30  * DISCLAIMER OF LIABILITY
31  * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
32  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33  * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
34  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
35  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
36  * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
37  * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
38 
39  * You should have received a copy of the GNU General Public License
40  * along with this program; if not, write to the Free Software
41  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
42  * USA.
43  */
44 
45 #include <linux/module.h>
46 #include <linux/kernel.h>
47 #include <linux/init.h>
48 #include <linux/errno.h>
49 #include <linux/blkdev.h>
50 #include <linux/sched.h>
51 #include <linux/workqueue.h>
52 #include <linux/delay.h>
53 #include <linux/pci.h>
54 #include <linux/interrupt.h>
55 #include <linux/aer.h>
56 #include <linux/raid_class.h>
57 #include <asm/unaligned.h>
58 
59 #include "mpt3sas_base.h"
60 
61 #define RAID_CHANNEL 1
62 /* forward proto's */
63 static void _scsih_expander_node_remove(struct MPT3SAS_ADAPTER *ioc,
64 	struct _sas_node *sas_expander);
65 static void _firmware_event_work(struct work_struct *work);
66 
67 static void _scsih_remove_device(struct MPT3SAS_ADAPTER *ioc,
68 	struct _sas_device *sas_device);
69 static int _scsih_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle,
70 	u8 retry_count, u8 is_pd);
71 
72 static u8 _scsih_check_for_pending_tm(struct MPT3SAS_ADAPTER *ioc, u16 smid);
73 
74 /* global parameters */
75 LIST_HEAD(mpt3sas_ioc_list);
76 /* global ioc lock for list operations */
77 DEFINE_SPINLOCK(gioc_lock);
78 
79 MODULE_AUTHOR(MPT3SAS_AUTHOR);
80 MODULE_DESCRIPTION(MPT3SAS_DESCRIPTION);
81 MODULE_LICENSE("GPL");
82 MODULE_VERSION(MPT3SAS_DRIVER_VERSION);
83 MODULE_ALIAS("mpt2sas");
84 
85 /* local parameters */
86 static u8 scsi_io_cb_idx = -1;
87 static u8 tm_cb_idx = -1;
88 static u8 ctl_cb_idx = -1;
89 static u8 base_cb_idx = -1;
90 static u8 port_enable_cb_idx = -1;
91 static u8 transport_cb_idx = -1;
92 static u8 scsih_cb_idx = -1;
93 static u8 config_cb_idx = -1;
94 static int mpt2_ids;
95 static int mpt3_ids;
96 
97 static u8 tm_tr_cb_idx = -1 ;
98 static u8 tm_tr_volume_cb_idx = -1 ;
99 static u8 tm_sas_control_cb_idx = -1;
100 
101 /* command line options */
102 static u32 logging_level;
103 MODULE_PARM_DESC(logging_level,
104 	" bits for enabling additional logging info (default=0)");
105 
106 
107 static ushort max_sectors = 0xFFFF;
108 module_param(max_sectors, ushort, 0);
109 MODULE_PARM_DESC(max_sectors, "max sectors, range 64 to 32767  default=32767");
110 
111 
112 static int missing_delay[2] = {-1, -1};
113 module_param_array(missing_delay, int, NULL, 0);
114 MODULE_PARM_DESC(missing_delay, " device missing delay , io missing delay");
115 
116 /* scsi-mid layer global parmeter is max_report_luns, which is 511 */
117 #define MPT3SAS_MAX_LUN (16895)
118 static u64 max_lun = MPT3SAS_MAX_LUN;
119 module_param(max_lun, ullong, 0);
120 MODULE_PARM_DESC(max_lun, " max lun, default=16895 ");
121 
122 static ushort hbas_to_enumerate;
123 module_param(hbas_to_enumerate, ushort, 0);
124 MODULE_PARM_DESC(hbas_to_enumerate,
125 		" 0 - enumerates both SAS 2.0 & SAS 3.0 generation HBAs\n \
126 		  1 - enumerates only SAS 2.0 generation HBAs\n \
127 		  2 - enumerates only SAS 3.0 generation HBAs (default=0)");
128 
129 /* diag_buffer_enable is bitwise
130  * bit 0 set = TRACE
131  * bit 1 set = SNAPSHOT
132  * bit 2 set = EXTENDED
133  *
134  * Either bit can be set, or both
135  */
136 static int diag_buffer_enable = -1;
137 module_param(diag_buffer_enable, int, 0);
138 MODULE_PARM_DESC(diag_buffer_enable,
139 	" post diag buffers (TRACE=1/SNAPSHOT=2/EXTENDED=4/default=0)");
140 static int disable_discovery = -1;
141 module_param(disable_discovery, int, 0);
142 MODULE_PARM_DESC(disable_discovery, " disable discovery ");
143 
144 
145 /* permit overriding the host protection capabilities mask (EEDP/T10 PI) */
146 static int prot_mask = -1;
147 module_param(prot_mask, int, 0);
148 MODULE_PARM_DESC(prot_mask, " host protection capabilities mask, def=7 ");
149 
150 
151 /* raid transport support */
152 struct raid_template *mpt3sas_raid_template;
153 struct raid_template *mpt2sas_raid_template;
154 
155 
156 /**
157  * struct sense_info - common structure for obtaining sense keys
158  * @skey: sense key
159  * @asc: additional sense code
160  * @ascq: additional sense code qualifier
161  */
162 struct sense_info {
163 	u8 skey;
164 	u8 asc;
165 	u8 ascq;
166 };
167 
168 #define MPT3SAS_PROCESS_TRIGGER_DIAG (0xFFFB)
169 #define MPT3SAS_TURN_ON_PFA_LED (0xFFFC)
170 #define MPT3SAS_PORT_ENABLE_COMPLETE (0xFFFD)
171 #define MPT3SAS_ABRT_TASK_SET (0xFFFE)
172 #define MPT3SAS_REMOVE_UNRESPONDING_DEVICES (0xFFFF)
173 /**
174  * struct fw_event_work - firmware event struct
175  * @list: link list framework
176  * @work: work object (ioc->fault_reset_work_q)
177  * @ioc: per adapter object
178  * @device_handle: device handle
179  * @VF_ID: virtual function id
180  * @VP_ID: virtual port id
181  * @ignore: flag meaning this event has been marked to ignore
182  * @event: firmware event MPI2_EVENT_XXX defined in mpi2_ioc.h
183  * @refcount: kref for this event
184  * @event_data: reply event data payload follows
185  *
186  * This object stored on ioc->fw_event_list.
187  */
188 struct fw_event_work {
189 	struct list_head	list;
190 	struct work_struct	work;
191 
192 	struct MPT3SAS_ADAPTER *ioc;
193 	u16			device_handle;
194 	u8			VF_ID;
195 	u8			VP_ID;
196 	u8			ignore;
197 	u16			event;
198 	struct kref		refcount;
199 	char			event_data[0] __aligned(4);
200 };
201 
202 static void fw_event_work_free(struct kref *r)
203 {
204 	kfree(container_of(r, struct fw_event_work, refcount));
205 }
206 
207 static void fw_event_work_get(struct fw_event_work *fw_work)
208 {
209 	kref_get(&fw_work->refcount);
210 }
211 
212 static void fw_event_work_put(struct fw_event_work *fw_work)
213 {
214 	kref_put(&fw_work->refcount, fw_event_work_free);
215 }
216 
217 static struct fw_event_work *alloc_fw_event_work(int len)
218 {
219 	struct fw_event_work *fw_event;
220 
221 	fw_event = kzalloc(sizeof(*fw_event) + len, GFP_ATOMIC);
222 	if (!fw_event)
223 		return NULL;
224 
225 	kref_init(&fw_event->refcount);
226 	return fw_event;
227 }
228 
229 /**
230  * struct _scsi_io_transfer - scsi io transfer
231  * @handle: sas device handle (assigned by firmware)
232  * @is_raid: flag set for hidden raid components
233  * @dir: DMA_TO_DEVICE, DMA_FROM_DEVICE,
234  * @data_length: data transfer length
235  * @data_dma: dma pointer to data
236  * @sense: sense data
237  * @lun: lun number
238  * @cdb_length: cdb length
239  * @cdb: cdb contents
240  * @timeout: timeout for this command
241  * @VF_ID: virtual function id
242  * @VP_ID: virtual port id
243  * @valid_reply: flag set for reply message
244  * @sense_length: sense length
245  * @ioc_status: ioc status
246  * @scsi_state: scsi state
247  * @scsi_status: scsi staus
248  * @log_info: log information
249  * @transfer_length: data length transfer when there is a reply message
250  *
251  * Used for sending internal scsi commands to devices within this module.
252  * Refer to _scsi_send_scsi_io().
253  */
254 struct _scsi_io_transfer {
255 	u16	handle;
256 	u8	is_raid;
257 	enum dma_data_direction dir;
258 	u32	data_length;
259 	dma_addr_t data_dma;
260 	u8	sense[SCSI_SENSE_BUFFERSIZE];
261 	u32	lun;
262 	u8	cdb_length;
263 	u8	cdb[32];
264 	u8	timeout;
265 	u8	VF_ID;
266 	u8	VP_ID;
267 	u8	valid_reply;
268   /* the following bits are only valid when 'valid_reply = 1' */
269 	u32	sense_length;
270 	u16	ioc_status;
271 	u8	scsi_state;
272 	u8	scsi_status;
273 	u32	log_info;
274 	u32	transfer_length;
275 };
276 
277 /**
278  * _scsih_set_debug_level - global setting of ioc->logging_level.
279  *
280  * Note: The logging levels are defined in mpt3sas_debug.h.
281  */
282 static int
283 _scsih_set_debug_level(const char *val, struct kernel_param *kp)
284 {
285 	int ret = param_set_int(val, kp);
286 	struct MPT3SAS_ADAPTER *ioc;
287 
288 	if (ret)
289 		return ret;
290 
291 	pr_info("setting logging_level(0x%08x)\n", logging_level);
292 	spin_lock(&gioc_lock);
293 	list_for_each_entry(ioc, &mpt3sas_ioc_list, list)
294 		ioc->logging_level = logging_level;
295 	spin_unlock(&gioc_lock);
296 	return 0;
297 }
298 module_param_call(logging_level, _scsih_set_debug_level, param_get_int,
299 	&logging_level, 0644);
300 
301 /**
302  * _scsih_srch_boot_sas_address - search based on sas_address
303  * @sas_address: sas address
304  * @boot_device: boot device object from bios page 2
305  *
306  * Returns 1 when there's a match, 0 means no match.
307  */
308 static inline int
309 _scsih_srch_boot_sas_address(u64 sas_address,
310 	Mpi2BootDeviceSasWwid_t *boot_device)
311 {
312 	return (sas_address == le64_to_cpu(boot_device->SASAddress)) ?  1 : 0;
313 }
314 
315 /**
316  * _scsih_srch_boot_device_name - search based on device name
317  * @device_name: device name specified in INDENTIFY fram
318  * @boot_device: boot device object from bios page 2
319  *
320  * Returns 1 when there's a match, 0 means no match.
321  */
322 static inline int
323 _scsih_srch_boot_device_name(u64 device_name,
324 	Mpi2BootDeviceDeviceName_t *boot_device)
325 {
326 	return (device_name == le64_to_cpu(boot_device->DeviceName)) ? 1 : 0;
327 }
328 
329 /**
330  * _scsih_srch_boot_encl_slot - search based on enclosure_logical_id/slot
331  * @enclosure_logical_id: enclosure logical id
332  * @slot_number: slot number
333  * @boot_device: boot device object from bios page 2
334  *
335  * Returns 1 when there's a match, 0 means no match.
336  */
337 static inline int
338 _scsih_srch_boot_encl_slot(u64 enclosure_logical_id, u16 slot_number,
339 	Mpi2BootDeviceEnclosureSlot_t *boot_device)
340 {
341 	return (enclosure_logical_id == le64_to_cpu(boot_device->
342 	    EnclosureLogicalID) && slot_number == le16_to_cpu(boot_device->
343 	    SlotNumber)) ? 1 : 0;
344 }
345 
346 /**
347  * _scsih_is_boot_device - search for matching boot device.
348  * @sas_address: sas address
349  * @device_name: device name specified in INDENTIFY fram
350  * @enclosure_logical_id: enclosure logical id
351  * @slot_number: slot number
352  * @form: specifies boot device form
353  * @boot_device: boot device object from bios page 2
354  *
355  * Returns 1 when there's a match, 0 means no match.
356  */
357 static int
358 _scsih_is_boot_device(u64 sas_address, u64 device_name,
359 	u64 enclosure_logical_id, u16 slot, u8 form,
360 	Mpi2BiosPage2BootDevice_t *boot_device)
361 {
362 	int rc = 0;
363 
364 	switch (form) {
365 	case MPI2_BIOSPAGE2_FORM_SAS_WWID:
366 		if (!sas_address)
367 			break;
368 		rc = _scsih_srch_boot_sas_address(
369 		    sas_address, &boot_device->SasWwid);
370 		break;
371 	case MPI2_BIOSPAGE2_FORM_ENCLOSURE_SLOT:
372 		if (!enclosure_logical_id)
373 			break;
374 		rc = _scsih_srch_boot_encl_slot(
375 		    enclosure_logical_id,
376 		    slot, &boot_device->EnclosureSlot);
377 		break;
378 	case MPI2_BIOSPAGE2_FORM_DEVICE_NAME:
379 		if (!device_name)
380 			break;
381 		rc = _scsih_srch_boot_device_name(
382 		    device_name, &boot_device->DeviceName);
383 		break;
384 	case MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED:
385 		break;
386 	}
387 
388 	return rc;
389 }
390 
391 /**
392  * _scsih_get_sas_address - set the sas_address for given device handle
393  * @handle: device handle
394  * @sas_address: sas address
395  *
396  * Returns 0 success, non-zero when failure
397  */
398 static int
399 _scsih_get_sas_address(struct MPT3SAS_ADAPTER *ioc, u16 handle,
400 	u64 *sas_address)
401 {
402 	Mpi2SasDevicePage0_t sas_device_pg0;
403 	Mpi2ConfigReply_t mpi_reply;
404 	u32 ioc_status;
405 
406 	*sas_address = 0;
407 
408 	if (handle <= ioc->sas_hba.num_phys) {
409 		*sas_address = ioc->sas_hba.sas_address;
410 		return 0;
411 	}
412 
413 	if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
414 	    MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
415 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", ioc->name,
416 		__FILE__, __LINE__, __func__);
417 		return -ENXIO;
418 	}
419 
420 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
421 	if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
422 		*sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
423 		return 0;
424 	}
425 
426 	/* we hit this because the given parent handle doesn't exist */
427 	if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
428 		return -ENXIO;
429 
430 	/* else error case */
431 	pr_err(MPT3SAS_FMT
432 		"handle(0x%04x), ioc_status(0x%04x), failure at %s:%d/%s()!\n",
433 		ioc->name, handle, ioc_status,
434 	     __FILE__, __LINE__, __func__);
435 	return -EIO;
436 }
437 
438 /**
439  * _scsih_determine_boot_device - determine boot device.
440  * @ioc: per adapter object
441  * @device: either sas_device or raid_device object
442  * @is_raid: [flag] 1 = raid object, 0 = sas object
443  *
444  * Determines whether this device should be first reported device to
445  * to scsi-ml or sas transport, this purpose is for persistent boot device.
446  * There are primary, alternate, and current entries in bios page 2. The order
447  * priority is primary, alternate, then current.  This routine saves
448  * the corresponding device object and is_raid flag in the ioc object.
449  * The saved data to be used later in _scsih_probe_boot_devices().
450  */
451 static void
452 _scsih_determine_boot_device(struct MPT3SAS_ADAPTER *ioc,
453 	void *device, u8 is_raid)
454 {
455 	struct _sas_device *sas_device;
456 	struct _raid_device *raid_device;
457 	u64 sas_address;
458 	u64 device_name;
459 	u64 enclosure_logical_id;
460 	u16 slot;
461 
462 	 /* only process this function when driver loads */
463 	if (!ioc->is_driver_loading)
464 		return;
465 
466 	 /* no Bios, return immediately */
467 	if (!ioc->bios_pg3.BiosVersion)
468 		return;
469 
470 	if (!is_raid) {
471 		sas_device = device;
472 		sas_address = sas_device->sas_address;
473 		device_name = sas_device->device_name;
474 		enclosure_logical_id = sas_device->enclosure_logical_id;
475 		slot = sas_device->slot;
476 	} else {
477 		raid_device = device;
478 		sas_address = raid_device->wwid;
479 		device_name = 0;
480 		enclosure_logical_id = 0;
481 		slot = 0;
482 	}
483 
484 	if (!ioc->req_boot_device.device) {
485 		if (_scsih_is_boot_device(sas_address, device_name,
486 		    enclosure_logical_id, slot,
487 		    (ioc->bios_pg2.ReqBootDeviceForm &
488 		    MPI2_BIOSPAGE2_FORM_MASK),
489 		    &ioc->bios_pg2.RequestedBootDevice)) {
490 			dinitprintk(ioc, pr_info(MPT3SAS_FMT
491 			   "%s: req_boot_device(0x%016llx)\n",
492 			    ioc->name, __func__,
493 			    (unsigned long long)sas_address));
494 			ioc->req_boot_device.device = device;
495 			ioc->req_boot_device.is_raid = is_raid;
496 		}
497 	}
498 
499 	if (!ioc->req_alt_boot_device.device) {
500 		if (_scsih_is_boot_device(sas_address, device_name,
501 		    enclosure_logical_id, slot,
502 		    (ioc->bios_pg2.ReqAltBootDeviceForm &
503 		    MPI2_BIOSPAGE2_FORM_MASK),
504 		    &ioc->bios_pg2.RequestedAltBootDevice)) {
505 			dinitprintk(ioc, pr_info(MPT3SAS_FMT
506 			   "%s: req_alt_boot_device(0x%016llx)\n",
507 			    ioc->name, __func__,
508 			    (unsigned long long)sas_address));
509 			ioc->req_alt_boot_device.device = device;
510 			ioc->req_alt_boot_device.is_raid = is_raid;
511 		}
512 	}
513 
514 	if (!ioc->current_boot_device.device) {
515 		if (_scsih_is_boot_device(sas_address, device_name,
516 		    enclosure_logical_id, slot,
517 		    (ioc->bios_pg2.CurrentBootDeviceForm &
518 		    MPI2_BIOSPAGE2_FORM_MASK),
519 		    &ioc->bios_pg2.CurrentBootDevice)) {
520 			dinitprintk(ioc, pr_info(MPT3SAS_FMT
521 			   "%s: current_boot_device(0x%016llx)\n",
522 			    ioc->name, __func__,
523 			    (unsigned long long)sas_address));
524 			ioc->current_boot_device.device = device;
525 			ioc->current_boot_device.is_raid = is_raid;
526 		}
527 	}
528 }
529 
530 static struct _sas_device *
531 __mpt3sas_get_sdev_from_target(struct MPT3SAS_ADAPTER *ioc,
532 		struct MPT3SAS_TARGET *tgt_priv)
533 {
534 	struct _sas_device *ret;
535 
536 	assert_spin_locked(&ioc->sas_device_lock);
537 
538 	ret = tgt_priv->sdev;
539 	if (ret)
540 		sas_device_get(ret);
541 
542 	return ret;
543 }
544 
545 static struct _sas_device *
546 mpt3sas_get_sdev_from_target(struct MPT3SAS_ADAPTER *ioc,
547 		struct MPT3SAS_TARGET *tgt_priv)
548 {
549 	struct _sas_device *ret;
550 	unsigned long flags;
551 
552 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
553 	ret = __mpt3sas_get_sdev_from_target(ioc, tgt_priv);
554 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
555 
556 	return ret;
557 }
558 
559 
560 struct _sas_device *
561 __mpt3sas_get_sdev_by_addr(struct MPT3SAS_ADAPTER *ioc,
562 					u64 sas_address)
563 {
564 	struct _sas_device *sas_device;
565 
566 	assert_spin_locked(&ioc->sas_device_lock);
567 
568 	list_for_each_entry(sas_device, &ioc->sas_device_list, list)
569 		if (sas_device->sas_address == sas_address)
570 			goto found_device;
571 
572 	list_for_each_entry(sas_device, &ioc->sas_device_init_list, list)
573 		if (sas_device->sas_address == sas_address)
574 			goto found_device;
575 
576 	return NULL;
577 
578 found_device:
579 	sas_device_get(sas_device);
580 	return sas_device;
581 }
582 
583 /**
584  * mpt3sas_get_sdev_by_addr - sas device search
585  * @ioc: per adapter object
586  * @sas_address: sas address
587  * Context: Calling function should acquire ioc->sas_device_lock
588  *
589  * This searches for sas_device based on sas_address, then return sas_device
590  * object.
591  */
592 struct _sas_device *
593 mpt3sas_get_sdev_by_addr(struct MPT3SAS_ADAPTER *ioc,
594 	u64 sas_address)
595 {
596 	struct _sas_device *sas_device;
597 	unsigned long flags;
598 
599 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
600 	sas_device = __mpt3sas_get_sdev_by_addr(ioc,
601 			sas_address);
602 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
603 
604 	return sas_device;
605 }
606 
607 static struct _sas_device *
608 __mpt3sas_get_sdev_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
609 {
610 	struct _sas_device *sas_device;
611 
612 	assert_spin_locked(&ioc->sas_device_lock);
613 
614 	list_for_each_entry(sas_device, &ioc->sas_device_list, list)
615 		if (sas_device->handle == handle)
616 			goto found_device;
617 
618 	list_for_each_entry(sas_device, &ioc->sas_device_init_list, list)
619 		if (sas_device->handle == handle)
620 			goto found_device;
621 
622 	return NULL;
623 
624 found_device:
625 	sas_device_get(sas_device);
626 	return sas_device;
627 }
628 
629 /**
630  * mpt3sas_get_sdev_by_handle - sas device search
631  * @ioc: per adapter object
632  * @handle: sas device handle (assigned by firmware)
633  * Context: Calling function should acquire ioc->sas_device_lock
634  *
635  * This searches for sas_device based on sas_address, then return sas_device
636  * object.
637  */
638 static struct _sas_device *
639 mpt3sas_get_sdev_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
640 {
641 	struct _sas_device *sas_device;
642 	unsigned long flags;
643 
644 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
645 	sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
646 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
647 
648 	return sas_device;
649 }
650 
651 /**
652  * _scsih_sas_device_remove - remove sas_device from list.
653  * @ioc: per adapter object
654  * @sas_device: the sas_device object
655  * Context: This function will acquire ioc->sas_device_lock.
656  *
657  * If sas_device is on the list, remove it and decrement its reference count.
658  */
659 static void
660 _scsih_sas_device_remove(struct MPT3SAS_ADAPTER *ioc,
661 	struct _sas_device *sas_device)
662 {
663 	unsigned long flags;
664 
665 	if (!sas_device)
666 		return;
667 	pr_info(MPT3SAS_FMT
668 	    "removing handle(0x%04x), sas_addr(0x%016llx)\n",
669 	    ioc->name, sas_device->handle,
670 	    (unsigned long long) sas_device->sas_address);
671 
672 	if (sas_device->enclosure_handle != 0)
673 		pr_info(MPT3SAS_FMT
674 		   "removing enclosure logical id(0x%016llx), slot(%d)\n",
675 		   ioc->name, (unsigned long long)
676 		   sas_device->enclosure_logical_id, sas_device->slot);
677 
678 	if (sas_device->connector_name[0] != '\0')
679 		pr_info(MPT3SAS_FMT
680 		   "removing enclosure level(0x%04x), connector name( %s)\n",
681 		   ioc->name, sas_device->enclosure_level,
682 		   sas_device->connector_name);
683 
684 	/*
685 	 * The lock serializes access to the list, but we still need to verify
686 	 * that nobody removed the entry while we were waiting on the lock.
687 	 */
688 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
689 	if (!list_empty(&sas_device->list)) {
690 		list_del_init(&sas_device->list);
691 		sas_device_put(sas_device);
692 	}
693 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
694 }
695 
696 /**
697  * _scsih_device_remove_by_handle - removing device object by handle
698  * @ioc: per adapter object
699  * @handle: device handle
700  *
701  * Return nothing.
702  */
703 static void
704 _scsih_device_remove_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
705 {
706 	struct _sas_device *sas_device;
707 	unsigned long flags;
708 
709 	if (ioc->shost_recovery)
710 		return;
711 
712 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
713 	sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
714 	if (sas_device) {
715 		list_del_init(&sas_device->list);
716 		sas_device_put(sas_device);
717 	}
718 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
719 	if (sas_device) {
720 		_scsih_remove_device(ioc, sas_device);
721 		sas_device_put(sas_device);
722 	}
723 }
724 
725 /**
726  * mpt3sas_device_remove_by_sas_address - removing device object by sas address
727  * @ioc: per adapter object
728  * @sas_address: device sas_address
729  *
730  * Return nothing.
731  */
732 void
733 mpt3sas_device_remove_by_sas_address(struct MPT3SAS_ADAPTER *ioc,
734 	u64 sas_address)
735 {
736 	struct _sas_device *sas_device;
737 	unsigned long flags;
738 
739 	if (ioc->shost_recovery)
740 		return;
741 
742 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
743 	sas_device = __mpt3sas_get_sdev_by_addr(ioc, sas_address);
744 	if (sas_device) {
745 		list_del_init(&sas_device->list);
746 		sas_device_put(sas_device);
747 	}
748 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
749 	if (sas_device) {
750 		_scsih_remove_device(ioc, sas_device);
751 		sas_device_put(sas_device);
752 	}
753 }
754 
755 /**
756  * _scsih_sas_device_add - insert sas_device to the list.
757  * @ioc: per adapter object
758  * @sas_device: the sas_device object
759  * Context: This function will acquire ioc->sas_device_lock.
760  *
761  * Adding new object to the ioc->sas_device_list.
762  */
763 static void
764 _scsih_sas_device_add(struct MPT3SAS_ADAPTER *ioc,
765 	struct _sas_device *sas_device)
766 {
767 	unsigned long flags;
768 
769 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
770 		"%s: handle(0x%04x), sas_addr(0x%016llx)\n",
771 		ioc->name, __func__, sas_device->handle,
772 		(unsigned long long)sas_device->sas_address));
773 
774 	if (sas_device->enclosure_handle != 0)
775 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
776 		    "%s: enclosure logical id(0x%016llx), slot( %d)\n",
777 		    ioc->name, __func__, (unsigned long long)
778 		    sas_device->enclosure_logical_id, sas_device->slot));
779 
780 	if (sas_device->connector_name[0] != '\0')
781 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
782 		    "%s: enclosure level(0x%04x), connector name( %s)\n",
783 		    ioc->name, __func__,
784 		    sas_device->enclosure_level, sas_device->connector_name));
785 
786 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
787 	sas_device_get(sas_device);
788 	list_add_tail(&sas_device->list, &ioc->sas_device_list);
789 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
790 
791 	if (ioc->hide_drives) {
792 		clear_bit(sas_device->handle, ioc->pend_os_device_add);
793 		return;
794 	}
795 
796 	if (!mpt3sas_transport_port_add(ioc, sas_device->handle,
797 	     sas_device->sas_address_parent)) {
798 		_scsih_sas_device_remove(ioc, sas_device);
799 	} else if (!sas_device->starget) {
800 		/*
801 		 * When asyn scanning is enabled, its not possible to remove
802 		 * devices while scanning is turned on due to an oops in
803 		 * scsi_sysfs_add_sdev()->add_device()->sysfs_addrm_start()
804 		 */
805 		if (!ioc->is_driver_loading) {
806 			mpt3sas_transport_port_remove(ioc,
807 			    sas_device->sas_address,
808 			    sas_device->sas_address_parent);
809 			_scsih_sas_device_remove(ioc, sas_device);
810 		}
811 	} else
812 		clear_bit(sas_device->handle, ioc->pend_os_device_add);
813 }
814 
815 /**
816  * _scsih_sas_device_init_add - insert sas_device to the list.
817  * @ioc: per adapter object
818  * @sas_device: the sas_device object
819  * Context: This function will acquire ioc->sas_device_lock.
820  *
821  * Adding new object at driver load time to the ioc->sas_device_init_list.
822  */
823 static void
824 _scsih_sas_device_init_add(struct MPT3SAS_ADAPTER *ioc,
825 	struct _sas_device *sas_device)
826 {
827 	unsigned long flags;
828 
829 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
830 		"%s: handle(0x%04x), sas_addr(0x%016llx)\n", ioc->name,
831 		__func__, sas_device->handle,
832 		(unsigned long long)sas_device->sas_address));
833 
834 	if (sas_device->enclosure_handle != 0)
835 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
836 		    "%s: enclosure logical id(0x%016llx), slot( %d)\n",
837 		    ioc->name, __func__, (unsigned long long)
838 		    sas_device->enclosure_logical_id, sas_device->slot));
839 
840 	if (sas_device->connector_name[0] != '\0')
841 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
842 		    "%s: enclosure level(0x%04x), connector name( %s)\n",
843 		    ioc->name, __func__, sas_device->enclosure_level,
844 		    sas_device->connector_name));
845 
846 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
847 	sas_device_get(sas_device);
848 	list_add_tail(&sas_device->list, &ioc->sas_device_init_list);
849 	_scsih_determine_boot_device(ioc, sas_device, 0);
850 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
851 }
852 
853 /**
854  * _scsih_raid_device_find_by_id - raid device search
855  * @ioc: per adapter object
856  * @id: sas device target id
857  * @channel: sas device channel
858  * Context: Calling function should acquire ioc->raid_device_lock
859  *
860  * This searches for raid_device based on target id, then return raid_device
861  * object.
862  */
863 static struct _raid_device *
864 _scsih_raid_device_find_by_id(struct MPT3SAS_ADAPTER *ioc, int id, int channel)
865 {
866 	struct _raid_device *raid_device, *r;
867 
868 	r = NULL;
869 	list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
870 		if (raid_device->id == id && raid_device->channel == channel) {
871 			r = raid_device;
872 			goto out;
873 		}
874 	}
875 
876  out:
877 	return r;
878 }
879 
880 /**
881  * mpt3sas_raid_device_find_by_handle - raid device search
882  * @ioc: per adapter object
883  * @handle: sas device handle (assigned by firmware)
884  * Context: Calling function should acquire ioc->raid_device_lock
885  *
886  * This searches for raid_device based on handle, then return raid_device
887  * object.
888  */
889 struct _raid_device *
890 mpt3sas_raid_device_find_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
891 {
892 	struct _raid_device *raid_device, *r;
893 
894 	r = NULL;
895 	list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
896 		if (raid_device->handle != handle)
897 			continue;
898 		r = raid_device;
899 		goto out;
900 	}
901 
902  out:
903 	return r;
904 }
905 
906 /**
907  * _scsih_raid_device_find_by_wwid - raid device search
908  * @ioc: per adapter object
909  * @handle: sas device handle (assigned by firmware)
910  * Context: Calling function should acquire ioc->raid_device_lock
911  *
912  * This searches for raid_device based on wwid, then return raid_device
913  * object.
914  */
915 static struct _raid_device *
916 _scsih_raid_device_find_by_wwid(struct MPT3SAS_ADAPTER *ioc, u64 wwid)
917 {
918 	struct _raid_device *raid_device, *r;
919 
920 	r = NULL;
921 	list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
922 		if (raid_device->wwid != wwid)
923 			continue;
924 		r = raid_device;
925 		goto out;
926 	}
927 
928  out:
929 	return r;
930 }
931 
932 /**
933  * _scsih_raid_device_add - add raid_device object
934  * @ioc: per adapter object
935  * @raid_device: raid_device object
936  *
937  * This is added to the raid_device_list link list.
938  */
939 static void
940 _scsih_raid_device_add(struct MPT3SAS_ADAPTER *ioc,
941 	struct _raid_device *raid_device)
942 {
943 	unsigned long flags;
944 
945 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
946 		"%s: handle(0x%04x), wwid(0x%016llx)\n", ioc->name, __func__,
947 	    raid_device->handle, (unsigned long long)raid_device->wwid));
948 
949 	spin_lock_irqsave(&ioc->raid_device_lock, flags);
950 	list_add_tail(&raid_device->list, &ioc->raid_device_list);
951 	spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
952 }
953 
954 /**
955  * _scsih_raid_device_remove - delete raid_device object
956  * @ioc: per adapter object
957  * @raid_device: raid_device object
958  *
959  */
960 static void
961 _scsih_raid_device_remove(struct MPT3SAS_ADAPTER *ioc,
962 	struct _raid_device *raid_device)
963 {
964 	unsigned long flags;
965 
966 	spin_lock_irqsave(&ioc->raid_device_lock, flags);
967 	list_del(&raid_device->list);
968 	kfree(raid_device);
969 	spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
970 }
971 
972 /**
973  * mpt3sas_scsih_expander_find_by_handle - expander device search
974  * @ioc: per adapter object
975  * @handle: expander handle (assigned by firmware)
976  * Context: Calling function should acquire ioc->sas_device_lock
977  *
978  * This searches for expander device based on handle, then returns the
979  * sas_node object.
980  */
981 struct _sas_node *
982 mpt3sas_scsih_expander_find_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
983 {
984 	struct _sas_node *sas_expander, *r;
985 
986 	r = NULL;
987 	list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
988 		if (sas_expander->handle != handle)
989 			continue;
990 		r = sas_expander;
991 		goto out;
992 	}
993  out:
994 	return r;
995 }
996 
997 /**
998  * mpt3sas_scsih_expander_find_by_sas_address - expander device search
999  * @ioc: per adapter object
1000  * @sas_address: sas address
1001  * Context: Calling function should acquire ioc->sas_node_lock.
1002  *
1003  * This searches for expander device based on sas_address, then returns the
1004  * sas_node object.
1005  */
1006 struct _sas_node *
1007 mpt3sas_scsih_expander_find_by_sas_address(struct MPT3SAS_ADAPTER *ioc,
1008 	u64 sas_address)
1009 {
1010 	struct _sas_node *sas_expander, *r;
1011 
1012 	r = NULL;
1013 	list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
1014 		if (sas_expander->sas_address != sas_address)
1015 			continue;
1016 		r = sas_expander;
1017 		goto out;
1018 	}
1019  out:
1020 	return r;
1021 }
1022 
1023 /**
1024  * _scsih_expander_node_add - insert expander device to the list.
1025  * @ioc: per adapter object
1026  * @sas_expander: the sas_device object
1027  * Context: This function will acquire ioc->sas_node_lock.
1028  *
1029  * Adding new object to the ioc->sas_expander_list.
1030  *
1031  * Return nothing.
1032  */
1033 static void
1034 _scsih_expander_node_add(struct MPT3SAS_ADAPTER *ioc,
1035 	struct _sas_node *sas_expander)
1036 {
1037 	unsigned long flags;
1038 
1039 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
1040 	list_add_tail(&sas_expander->list, &ioc->sas_expander_list);
1041 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1042 }
1043 
1044 /**
1045  * _scsih_is_end_device - determines if device is an end device
1046  * @device_info: bitfield providing information about the device.
1047  * Context: none
1048  *
1049  * Returns 1 if end device.
1050  */
1051 static int
1052 _scsih_is_end_device(u32 device_info)
1053 {
1054 	if (device_info & MPI2_SAS_DEVICE_INFO_END_DEVICE &&
1055 		((device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET) |
1056 		(device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET) |
1057 		(device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)))
1058 		return 1;
1059 	else
1060 		return 0;
1061 }
1062 
1063 /**
1064  * _scsih_scsi_lookup_get - returns scmd entry
1065  * @ioc: per adapter object
1066  * @smid: system request message index
1067  *
1068  * Returns the smid stored scmd pointer.
1069  */
1070 static struct scsi_cmnd *
1071 _scsih_scsi_lookup_get(struct MPT3SAS_ADAPTER *ioc, u16 smid)
1072 {
1073 	return ioc->scsi_lookup[smid - 1].scmd;
1074 }
1075 
1076 /**
1077  * _scsih_scsi_lookup_get_clear - returns scmd entry
1078  * @ioc: per adapter object
1079  * @smid: system request message index
1080  *
1081  * Returns the smid stored scmd pointer.
1082  * Then will derefrence the stored scmd pointer.
1083  */
1084 static inline struct scsi_cmnd *
1085 _scsih_scsi_lookup_get_clear(struct MPT3SAS_ADAPTER *ioc, u16 smid)
1086 {
1087 	unsigned long flags;
1088 	struct scsi_cmnd *scmd;
1089 
1090 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1091 	scmd = ioc->scsi_lookup[smid - 1].scmd;
1092 	ioc->scsi_lookup[smid - 1].scmd = NULL;
1093 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1094 
1095 	return scmd;
1096 }
1097 
1098 /**
1099  * _scsih_scsi_lookup_find_by_scmd - scmd lookup
1100  * @ioc: per adapter object
1101  * @smid: system request message index
1102  * @scmd: pointer to scsi command object
1103  * Context: This function will acquire ioc->scsi_lookup_lock.
1104  *
1105  * This will search for a scmd pointer in the scsi_lookup array,
1106  * returning the revelent smid.  A returned value of zero means invalid.
1107  */
1108 static u16
1109 _scsih_scsi_lookup_find_by_scmd(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd
1110 	*scmd)
1111 {
1112 	u16 smid;
1113 	unsigned long	flags;
1114 	int i;
1115 
1116 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1117 	smid = 0;
1118 	for (i = 0; i < ioc->scsiio_depth; i++) {
1119 		if (ioc->scsi_lookup[i].scmd == scmd) {
1120 			smid = ioc->scsi_lookup[i].smid;
1121 			goto out;
1122 		}
1123 	}
1124  out:
1125 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1126 	return smid;
1127 }
1128 
1129 /**
1130  * _scsih_scsi_lookup_find_by_target - search for matching channel:id
1131  * @ioc: per adapter object
1132  * @id: target id
1133  * @channel: channel
1134  * Context: This function will acquire ioc->scsi_lookup_lock.
1135  *
1136  * This will search for a matching channel:id in the scsi_lookup array,
1137  * returning 1 if found.
1138  */
1139 static u8
1140 _scsih_scsi_lookup_find_by_target(struct MPT3SAS_ADAPTER *ioc, int id,
1141 	int channel)
1142 {
1143 	u8 found;
1144 	unsigned long	flags;
1145 	int i;
1146 
1147 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1148 	found = 0;
1149 	for (i = 0 ; i < ioc->scsiio_depth; i++) {
1150 		if (ioc->scsi_lookup[i].scmd &&
1151 		    (ioc->scsi_lookup[i].scmd->device->id == id &&
1152 		    ioc->scsi_lookup[i].scmd->device->channel == channel)) {
1153 			found = 1;
1154 			goto out;
1155 		}
1156 	}
1157  out:
1158 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1159 	return found;
1160 }
1161 
1162 /**
1163  * _scsih_scsi_lookup_find_by_lun - search for matching channel:id:lun
1164  * @ioc: per adapter object
1165  * @id: target id
1166  * @lun: lun number
1167  * @channel: channel
1168  * Context: This function will acquire ioc->scsi_lookup_lock.
1169  *
1170  * This will search for a matching channel:id:lun in the scsi_lookup array,
1171  * returning 1 if found.
1172  */
1173 static u8
1174 _scsih_scsi_lookup_find_by_lun(struct MPT3SAS_ADAPTER *ioc, int id,
1175 	unsigned int lun, int channel)
1176 {
1177 	u8 found;
1178 	unsigned long	flags;
1179 	int i;
1180 
1181 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1182 	found = 0;
1183 	for (i = 0 ; i < ioc->scsiio_depth; i++) {
1184 		if (ioc->scsi_lookup[i].scmd &&
1185 		    (ioc->scsi_lookup[i].scmd->device->id == id &&
1186 		    ioc->scsi_lookup[i].scmd->device->channel == channel &&
1187 		    ioc->scsi_lookup[i].scmd->device->lun == lun)) {
1188 			found = 1;
1189 			goto out;
1190 		}
1191 	}
1192  out:
1193 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1194 	return found;
1195 }
1196 
1197 /**
1198  * scsih_change_queue_depth - setting device queue depth
1199  * @sdev: scsi device struct
1200  * @qdepth: requested queue depth
1201  *
1202  * Returns queue depth.
1203  */
1204 static int
1205 scsih_change_queue_depth(struct scsi_device *sdev, int qdepth)
1206 {
1207 	struct Scsi_Host *shost = sdev->host;
1208 	int max_depth;
1209 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1210 	struct MPT3SAS_DEVICE *sas_device_priv_data;
1211 	struct MPT3SAS_TARGET *sas_target_priv_data;
1212 	struct _sas_device *sas_device;
1213 	unsigned long flags;
1214 
1215 	max_depth = shost->can_queue;
1216 
1217 	/* limit max device queue for SATA to 32 */
1218 	sas_device_priv_data = sdev->hostdata;
1219 	if (!sas_device_priv_data)
1220 		goto not_sata;
1221 	sas_target_priv_data = sas_device_priv_data->sas_target;
1222 	if (!sas_target_priv_data)
1223 		goto not_sata;
1224 	if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME))
1225 		goto not_sata;
1226 
1227 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
1228 	sas_device = __mpt3sas_get_sdev_from_target(ioc, sas_target_priv_data);
1229 	if (sas_device) {
1230 		if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
1231 			max_depth = MPT3SAS_SATA_QUEUE_DEPTH;
1232 
1233 		sas_device_put(sas_device);
1234 	}
1235 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1236 
1237  not_sata:
1238 
1239 	if (!sdev->tagged_supported)
1240 		max_depth = 1;
1241 	if (qdepth > max_depth)
1242 		qdepth = max_depth;
1243 	return scsi_change_queue_depth(sdev, qdepth);
1244 }
1245 
1246 /**
1247  * scsih_target_alloc - target add routine
1248  * @starget: scsi target struct
1249  *
1250  * Returns 0 if ok. Any other return is assumed to be an error and
1251  * the device is ignored.
1252  */
1253 static int
1254 scsih_target_alloc(struct scsi_target *starget)
1255 {
1256 	struct Scsi_Host *shost = dev_to_shost(&starget->dev);
1257 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1258 	struct MPT3SAS_TARGET *sas_target_priv_data;
1259 	struct _sas_device *sas_device;
1260 	struct _raid_device *raid_device;
1261 	unsigned long flags;
1262 	struct sas_rphy *rphy;
1263 
1264 	sas_target_priv_data = kzalloc(sizeof(*sas_target_priv_data),
1265 				       GFP_KERNEL);
1266 	if (!sas_target_priv_data)
1267 		return -ENOMEM;
1268 
1269 	starget->hostdata = sas_target_priv_data;
1270 	sas_target_priv_data->starget = starget;
1271 	sas_target_priv_data->handle = MPT3SAS_INVALID_DEVICE_HANDLE;
1272 
1273 	/* RAID volumes */
1274 	if (starget->channel == RAID_CHANNEL) {
1275 		spin_lock_irqsave(&ioc->raid_device_lock, flags);
1276 		raid_device = _scsih_raid_device_find_by_id(ioc, starget->id,
1277 		    starget->channel);
1278 		if (raid_device) {
1279 			sas_target_priv_data->handle = raid_device->handle;
1280 			sas_target_priv_data->sas_address = raid_device->wwid;
1281 			sas_target_priv_data->flags |= MPT_TARGET_FLAGS_VOLUME;
1282 			if (ioc->is_warpdrive)
1283 				sas_target_priv_data->raid_device = raid_device;
1284 			raid_device->starget = starget;
1285 		}
1286 		spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1287 		return 0;
1288 	}
1289 
1290 	/* sas/sata devices */
1291 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
1292 	rphy = dev_to_rphy(starget->dev.parent);
1293 	sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1294 	   rphy->identify.sas_address);
1295 
1296 	if (sas_device) {
1297 		sas_target_priv_data->handle = sas_device->handle;
1298 		sas_target_priv_data->sas_address = sas_device->sas_address;
1299 		sas_target_priv_data->sdev = sas_device;
1300 		sas_device->starget = starget;
1301 		sas_device->id = starget->id;
1302 		sas_device->channel = starget->channel;
1303 		if (test_bit(sas_device->handle, ioc->pd_handles))
1304 			sas_target_priv_data->flags |=
1305 			    MPT_TARGET_FLAGS_RAID_COMPONENT;
1306 		if (sas_device->fast_path)
1307 			sas_target_priv_data->flags |= MPT_TARGET_FASTPATH_IO;
1308 	}
1309 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1310 
1311 	return 0;
1312 }
1313 
1314 /**
1315  * scsih_target_destroy - target destroy routine
1316  * @starget: scsi target struct
1317  *
1318  * Returns nothing.
1319  */
1320 static void
1321 scsih_target_destroy(struct scsi_target *starget)
1322 {
1323 	struct Scsi_Host *shost = dev_to_shost(&starget->dev);
1324 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1325 	struct MPT3SAS_TARGET *sas_target_priv_data;
1326 	struct _sas_device *sas_device;
1327 	struct _raid_device *raid_device;
1328 	unsigned long flags;
1329 
1330 	sas_target_priv_data = starget->hostdata;
1331 	if (!sas_target_priv_data)
1332 		return;
1333 
1334 	if (starget->channel == RAID_CHANNEL) {
1335 		spin_lock_irqsave(&ioc->raid_device_lock, flags);
1336 		raid_device = _scsih_raid_device_find_by_id(ioc, starget->id,
1337 		    starget->channel);
1338 		if (raid_device) {
1339 			raid_device->starget = NULL;
1340 			raid_device->sdev = NULL;
1341 		}
1342 		spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1343 		goto out;
1344 	}
1345 
1346 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
1347 	sas_device = __mpt3sas_get_sdev_from_target(ioc, sas_target_priv_data);
1348 	if (sas_device && (sas_device->starget == starget) &&
1349 	    (sas_device->id == starget->id) &&
1350 	    (sas_device->channel == starget->channel))
1351 		sas_device->starget = NULL;
1352 
1353 	if (sas_device) {
1354 		/*
1355 		 * Corresponding get() is in _scsih_target_alloc()
1356 		 */
1357 		sas_target_priv_data->sdev = NULL;
1358 		sas_device_put(sas_device);
1359 
1360 		sas_device_put(sas_device);
1361 	}
1362 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1363 
1364  out:
1365 	kfree(sas_target_priv_data);
1366 	starget->hostdata = NULL;
1367 }
1368 
1369 /**
1370  * scsih_slave_alloc - device add routine
1371  * @sdev: scsi device struct
1372  *
1373  * Returns 0 if ok. Any other return is assumed to be an error and
1374  * the device is ignored.
1375  */
1376 static int
1377 scsih_slave_alloc(struct scsi_device *sdev)
1378 {
1379 	struct Scsi_Host *shost;
1380 	struct MPT3SAS_ADAPTER *ioc;
1381 	struct MPT3SAS_TARGET *sas_target_priv_data;
1382 	struct MPT3SAS_DEVICE *sas_device_priv_data;
1383 	struct scsi_target *starget;
1384 	struct _raid_device *raid_device;
1385 	struct _sas_device *sas_device;
1386 	unsigned long flags;
1387 
1388 	sas_device_priv_data = kzalloc(sizeof(*sas_device_priv_data),
1389 				       GFP_KERNEL);
1390 	if (!sas_device_priv_data)
1391 		return -ENOMEM;
1392 
1393 	sas_device_priv_data->lun = sdev->lun;
1394 	sas_device_priv_data->flags = MPT_DEVICE_FLAGS_INIT;
1395 
1396 	starget = scsi_target(sdev);
1397 	sas_target_priv_data = starget->hostdata;
1398 	sas_target_priv_data->num_luns++;
1399 	sas_device_priv_data->sas_target = sas_target_priv_data;
1400 	sdev->hostdata = sas_device_priv_data;
1401 	if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT))
1402 		sdev->no_uld_attach = 1;
1403 
1404 	shost = dev_to_shost(&starget->dev);
1405 	ioc = shost_priv(shost);
1406 	if (starget->channel == RAID_CHANNEL) {
1407 		spin_lock_irqsave(&ioc->raid_device_lock, flags);
1408 		raid_device = _scsih_raid_device_find_by_id(ioc,
1409 		    starget->id, starget->channel);
1410 		if (raid_device)
1411 			raid_device->sdev = sdev; /* raid is single lun */
1412 		spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1413 	}
1414 
1415 	if (!(sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)) {
1416 		spin_lock_irqsave(&ioc->sas_device_lock, flags);
1417 		sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1418 					sas_target_priv_data->sas_address);
1419 		if (sas_device && (sas_device->starget == NULL)) {
1420 			sdev_printk(KERN_INFO, sdev,
1421 			"%s : sas_device->starget set to starget @ %d\n",
1422 			     __func__, __LINE__);
1423 			sas_device->starget = starget;
1424 		}
1425 
1426 		if (sas_device)
1427 			sas_device_put(sas_device);
1428 
1429 		spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1430 	}
1431 
1432 	return 0;
1433 }
1434 
1435 /**
1436  * scsih_slave_destroy - device destroy routine
1437  * @sdev: scsi device struct
1438  *
1439  * Returns nothing.
1440  */
1441 static void
1442 scsih_slave_destroy(struct scsi_device *sdev)
1443 {
1444 	struct MPT3SAS_TARGET *sas_target_priv_data;
1445 	struct scsi_target *starget;
1446 	struct Scsi_Host *shost;
1447 	struct MPT3SAS_ADAPTER *ioc;
1448 	struct _sas_device *sas_device;
1449 	unsigned long flags;
1450 
1451 	if (!sdev->hostdata)
1452 		return;
1453 
1454 	starget = scsi_target(sdev);
1455 	sas_target_priv_data = starget->hostdata;
1456 	sas_target_priv_data->num_luns--;
1457 
1458 	shost = dev_to_shost(&starget->dev);
1459 	ioc = shost_priv(shost);
1460 
1461 	if (!(sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)) {
1462 		spin_lock_irqsave(&ioc->sas_device_lock, flags);
1463 		sas_device = __mpt3sas_get_sdev_from_target(ioc,
1464 				sas_target_priv_data);
1465 		if (sas_device && !sas_target_priv_data->num_luns)
1466 			sas_device->starget = NULL;
1467 
1468 		if (sas_device)
1469 			sas_device_put(sas_device);
1470 		spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1471 	}
1472 
1473 	kfree(sdev->hostdata);
1474 	sdev->hostdata = NULL;
1475 }
1476 
1477 /**
1478  * _scsih_display_sata_capabilities - sata capabilities
1479  * @ioc: per adapter object
1480  * @handle: device handle
1481  * @sdev: scsi device struct
1482  */
1483 static void
1484 _scsih_display_sata_capabilities(struct MPT3SAS_ADAPTER *ioc,
1485 	u16 handle, struct scsi_device *sdev)
1486 {
1487 	Mpi2ConfigReply_t mpi_reply;
1488 	Mpi2SasDevicePage0_t sas_device_pg0;
1489 	u32 ioc_status;
1490 	u16 flags;
1491 	u32 device_info;
1492 
1493 	if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
1494 	    MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
1495 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1496 		    ioc->name, __FILE__, __LINE__, __func__);
1497 		return;
1498 	}
1499 
1500 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1501 	    MPI2_IOCSTATUS_MASK;
1502 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1503 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1504 		    ioc->name, __FILE__, __LINE__, __func__);
1505 		return;
1506 	}
1507 
1508 	flags = le16_to_cpu(sas_device_pg0.Flags);
1509 	device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
1510 
1511 	sdev_printk(KERN_INFO, sdev,
1512 	    "atapi(%s), ncq(%s), asyn_notify(%s), smart(%s), fua(%s), "
1513 	    "sw_preserve(%s)\n",
1514 	    (device_info & MPI2_SAS_DEVICE_INFO_ATAPI_DEVICE) ? "y" : "n",
1515 	    (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_NCQ_SUPPORTED) ? "y" : "n",
1516 	    (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_ASYNCHRONOUS_NOTIFY) ? "y" :
1517 	    "n",
1518 	    (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_SMART_SUPPORTED) ? "y" : "n",
1519 	    (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_FUA_SUPPORTED) ? "y" : "n",
1520 	    (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_SW_PRESERVE) ? "y" : "n");
1521 }
1522 
1523 /*
1524  * raid transport support -
1525  * Enabled for SLES11 and newer, in older kernels the driver will panic when
1526  * unloading the driver followed by a load - I believe that the subroutine
1527  * raid_class_release() is not cleaning up properly.
1528  */
1529 
1530 /**
1531  * scsih_is_raid - return boolean indicating device is raid volume
1532  * @dev the device struct object
1533  */
1534 static int
1535 scsih_is_raid(struct device *dev)
1536 {
1537 	struct scsi_device *sdev = to_scsi_device(dev);
1538 	struct MPT3SAS_ADAPTER *ioc = shost_priv(sdev->host);
1539 
1540 	if (ioc->is_warpdrive)
1541 		return 0;
1542 	return (sdev->channel == RAID_CHANNEL) ? 1 : 0;
1543 }
1544 
1545 /**
1546  * scsih_get_resync - get raid volume resync percent complete
1547  * @dev the device struct object
1548  */
1549 static void
1550 scsih_get_resync(struct device *dev)
1551 {
1552 	struct scsi_device *sdev = to_scsi_device(dev);
1553 	struct MPT3SAS_ADAPTER *ioc = shost_priv(sdev->host);
1554 	static struct _raid_device *raid_device;
1555 	unsigned long flags;
1556 	Mpi2RaidVolPage0_t vol_pg0;
1557 	Mpi2ConfigReply_t mpi_reply;
1558 	u32 volume_status_flags;
1559 	u8 percent_complete;
1560 	u16 handle;
1561 
1562 	percent_complete = 0;
1563 	handle = 0;
1564 	if (ioc->is_warpdrive)
1565 		goto out;
1566 
1567 	spin_lock_irqsave(&ioc->raid_device_lock, flags);
1568 	raid_device = _scsih_raid_device_find_by_id(ioc, sdev->id,
1569 	    sdev->channel);
1570 	if (raid_device) {
1571 		handle = raid_device->handle;
1572 		percent_complete = raid_device->percent_complete;
1573 	}
1574 	spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1575 
1576 	if (!handle)
1577 		goto out;
1578 
1579 	if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply, &vol_pg0,
1580 	     MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
1581 	     sizeof(Mpi2RaidVolPage0_t))) {
1582 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1583 		    ioc->name, __FILE__, __LINE__, __func__);
1584 		percent_complete = 0;
1585 		goto out;
1586 	}
1587 
1588 	volume_status_flags = le32_to_cpu(vol_pg0.VolumeStatusFlags);
1589 	if (!(volume_status_flags &
1590 	    MPI2_RAIDVOL0_STATUS_FLAG_RESYNC_IN_PROGRESS))
1591 		percent_complete = 0;
1592 
1593  out:
1594 
1595 	switch (ioc->hba_mpi_version_belonged) {
1596 	case MPI2_VERSION:
1597 		raid_set_resync(mpt2sas_raid_template, dev, percent_complete);
1598 		break;
1599 	case MPI25_VERSION:
1600 	case MPI26_VERSION:
1601 		raid_set_resync(mpt3sas_raid_template, dev, percent_complete);
1602 		break;
1603 	}
1604 }
1605 
1606 /**
1607  * scsih_get_state - get raid volume level
1608  * @dev the device struct object
1609  */
1610 static void
1611 scsih_get_state(struct device *dev)
1612 {
1613 	struct scsi_device *sdev = to_scsi_device(dev);
1614 	struct MPT3SAS_ADAPTER *ioc = shost_priv(sdev->host);
1615 	static struct _raid_device *raid_device;
1616 	unsigned long flags;
1617 	Mpi2RaidVolPage0_t vol_pg0;
1618 	Mpi2ConfigReply_t mpi_reply;
1619 	u32 volstate;
1620 	enum raid_state state = RAID_STATE_UNKNOWN;
1621 	u16 handle = 0;
1622 
1623 	spin_lock_irqsave(&ioc->raid_device_lock, flags);
1624 	raid_device = _scsih_raid_device_find_by_id(ioc, sdev->id,
1625 	    sdev->channel);
1626 	if (raid_device)
1627 		handle = raid_device->handle;
1628 	spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1629 
1630 	if (!raid_device)
1631 		goto out;
1632 
1633 	if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply, &vol_pg0,
1634 	     MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
1635 	     sizeof(Mpi2RaidVolPage0_t))) {
1636 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1637 		    ioc->name, __FILE__, __LINE__, __func__);
1638 		goto out;
1639 	}
1640 
1641 	volstate = le32_to_cpu(vol_pg0.VolumeStatusFlags);
1642 	if (volstate & MPI2_RAIDVOL0_STATUS_FLAG_RESYNC_IN_PROGRESS) {
1643 		state = RAID_STATE_RESYNCING;
1644 		goto out;
1645 	}
1646 
1647 	switch (vol_pg0.VolumeState) {
1648 	case MPI2_RAID_VOL_STATE_OPTIMAL:
1649 	case MPI2_RAID_VOL_STATE_ONLINE:
1650 		state = RAID_STATE_ACTIVE;
1651 		break;
1652 	case  MPI2_RAID_VOL_STATE_DEGRADED:
1653 		state = RAID_STATE_DEGRADED;
1654 		break;
1655 	case MPI2_RAID_VOL_STATE_FAILED:
1656 	case MPI2_RAID_VOL_STATE_MISSING:
1657 		state = RAID_STATE_OFFLINE;
1658 		break;
1659 	}
1660  out:
1661 	switch (ioc->hba_mpi_version_belonged) {
1662 	case MPI2_VERSION:
1663 		raid_set_state(mpt2sas_raid_template, dev, state);
1664 		break;
1665 	case MPI25_VERSION:
1666 	case MPI26_VERSION:
1667 		raid_set_state(mpt3sas_raid_template, dev, state);
1668 		break;
1669 	}
1670 }
1671 
1672 /**
1673  * _scsih_set_level - set raid level
1674  * @sdev: scsi device struct
1675  * @volume_type: volume type
1676  */
1677 static void
1678 _scsih_set_level(struct MPT3SAS_ADAPTER *ioc,
1679 	struct scsi_device *sdev, u8 volume_type)
1680 {
1681 	enum raid_level level = RAID_LEVEL_UNKNOWN;
1682 
1683 	switch (volume_type) {
1684 	case MPI2_RAID_VOL_TYPE_RAID0:
1685 		level = RAID_LEVEL_0;
1686 		break;
1687 	case MPI2_RAID_VOL_TYPE_RAID10:
1688 		level = RAID_LEVEL_10;
1689 		break;
1690 	case MPI2_RAID_VOL_TYPE_RAID1E:
1691 		level = RAID_LEVEL_1E;
1692 		break;
1693 	case MPI2_RAID_VOL_TYPE_RAID1:
1694 		level = RAID_LEVEL_1;
1695 		break;
1696 	}
1697 
1698 	switch (ioc->hba_mpi_version_belonged) {
1699 	case MPI2_VERSION:
1700 		raid_set_level(mpt2sas_raid_template,
1701 			&sdev->sdev_gendev, level);
1702 		break;
1703 	case MPI25_VERSION:
1704 	case MPI26_VERSION:
1705 		raid_set_level(mpt3sas_raid_template,
1706 			&sdev->sdev_gendev, level);
1707 		break;
1708 	}
1709 }
1710 
1711 
1712 /**
1713  * _scsih_get_volume_capabilities - volume capabilities
1714  * @ioc: per adapter object
1715  * @sas_device: the raid_device object
1716  *
1717  * Returns 0 for success, else 1
1718  */
1719 static int
1720 _scsih_get_volume_capabilities(struct MPT3SAS_ADAPTER *ioc,
1721 	struct _raid_device *raid_device)
1722 {
1723 	Mpi2RaidVolPage0_t *vol_pg0;
1724 	Mpi2RaidPhysDiskPage0_t pd_pg0;
1725 	Mpi2SasDevicePage0_t sas_device_pg0;
1726 	Mpi2ConfigReply_t mpi_reply;
1727 	u16 sz;
1728 	u8 num_pds;
1729 
1730 	if ((mpt3sas_config_get_number_pds(ioc, raid_device->handle,
1731 	    &num_pds)) || !num_pds) {
1732 		dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1733 		    "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1734 		    __func__));
1735 		return 1;
1736 	}
1737 
1738 	raid_device->num_pds = num_pds;
1739 	sz = offsetof(Mpi2RaidVolPage0_t, PhysDisk) + (num_pds *
1740 	    sizeof(Mpi2RaidVol0PhysDisk_t));
1741 	vol_pg0 = kzalloc(sz, GFP_KERNEL);
1742 	if (!vol_pg0) {
1743 		dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1744 		    "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1745 		    __func__));
1746 		return 1;
1747 	}
1748 
1749 	if ((mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply, vol_pg0,
1750 	     MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, raid_device->handle, sz))) {
1751 		dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1752 		    "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1753 		    __func__));
1754 		kfree(vol_pg0);
1755 		return 1;
1756 	}
1757 
1758 	raid_device->volume_type = vol_pg0->VolumeType;
1759 
1760 	/* figure out what the underlying devices are by
1761 	 * obtaining the device_info bits for the 1st device
1762 	 */
1763 	if (!(mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
1764 	    &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_PHYSDISKNUM,
1765 	    vol_pg0->PhysDisk[0].PhysDiskNum))) {
1766 		if (!(mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
1767 		    &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
1768 		    le16_to_cpu(pd_pg0.DevHandle)))) {
1769 			raid_device->device_info =
1770 			    le32_to_cpu(sas_device_pg0.DeviceInfo);
1771 		}
1772 	}
1773 
1774 	kfree(vol_pg0);
1775 	return 0;
1776 }
1777 
1778 /**
1779  * _scsih_enable_tlr - setting TLR flags
1780  * @ioc: per adapter object
1781  * @sdev: scsi device struct
1782  *
1783  * Enabling Transaction Layer Retries for tape devices when
1784  * vpd page 0x90 is present
1785  *
1786  */
1787 static void
1788 _scsih_enable_tlr(struct MPT3SAS_ADAPTER *ioc, struct scsi_device *sdev)
1789 {
1790 
1791 	/* only for TAPE */
1792 	if (sdev->type != TYPE_TAPE)
1793 		return;
1794 
1795 	if (!(ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR))
1796 		return;
1797 
1798 	sas_enable_tlr(sdev);
1799 	sdev_printk(KERN_INFO, sdev, "TLR %s\n",
1800 	    sas_is_tlr_enabled(sdev) ? "Enabled" : "Disabled");
1801 	return;
1802 
1803 }
1804 
1805 /**
1806  * scsih_slave_configure - device configure routine.
1807  * @sdev: scsi device struct
1808  *
1809  * Returns 0 if ok. Any other return is assumed to be an error and
1810  * the device is ignored.
1811  */
1812 static int
1813 scsih_slave_configure(struct scsi_device *sdev)
1814 {
1815 	struct Scsi_Host *shost = sdev->host;
1816 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1817 	struct MPT3SAS_DEVICE *sas_device_priv_data;
1818 	struct MPT3SAS_TARGET *sas_target_priv_data;
1819 	struct _sas_device *sas_device;
1820 	struct _raid_device *raid_device;
1821 	unsigned long flags;
1822 	int qdepth;
1823 	u8 ssp_target = 0;
1824 	char *ds = "";
1825 	char *r_level = "";
1826 	u16 handle, volume_handle = 0;
1827 	u64 volume_wwid = 0;
1828 
1829 	qdepth = 1;
1830 	sas_device_priv_data = sdev->hostdata;
1831 	sas_device_priv_data->configured_lun = 1;
1832 	sas_device_priv_data->flags &= ~MPT_DEVICE_FLAGS_INIT;
1833 	sas_target_priv_data = sas_device_priv_data->sas_target;
1834 	handle = sas_target_priv_data->handle;
1835 
1836 	/* raid volume handling */
1837 	if (sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME) {
1838 
1839 		spin_lock_irqsave(&ioc->raid_device_lock, flags);
1840 		raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
1841 		spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1842 		if (!raid_device) {
1843 			dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1844 			    "failure at %s:%d/%s()!\n", ioc->name, __FILE__,
1845 			    __LINE__, __func__));
1846 			return 1;
1847 		}
1848 
1849 		if (_scsih_get_volume_capabilities(ioc, raid_device)) {
1850 			dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1851 			    "failure at %s:%d/%s()!\n", ioc->name, __FILE__,
1852 			    __LINE__, __func__));
1853 			return 1;
1854 		}
1855 
1856 		/*
1857 		 * WARPDRIVE: Initialize the required data for Direct IO
1858 		 */
1859 		mpt3sas_init_warpdrive_properties(ioc, raid_device);
1860 
1861 		/* RAID Queue Depth Support
1862 		 * IS volume = underlying qdepth of drive type, either
1863 		 *    MPT3SAS_SAS_QUEUE_DEPTH or MPT3SAS_SATA_QUEUE_DEPTH
1864 		 * IM/IME/R10 = 128 (MPT3SAS_RAID_QUEUE_DEPTH)
1865 		 */
1866 		if (raid_device->device_info &
1867 		    MPI2_SAS_DEVICE_INFO_SSP_TARGET) {
1868 			qdepth = MPT3SAS_SAS_QUEUE_DEPTH;
1869 			ds = "SSP";
1870 		} else {
1871 			qdepth = MPT3SAS_SATA_QUEUE_DEPTH;
1872 			 if (raid_device->device_info &
1873 			    MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
1874 				ds = "SATA";
1875 			else
1876 				ds = "STP";
1877 		}
1878 
1879 		switch (raid_device->volume_type) {
1880 		case MPI2_RAID_VOL_TYPE_RAID0:
1881 			r_level = "RAID0";
1882 			break;
1883 		case MPI2_RAID_VOL_TYPE_RAID1E:
1884 			qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1885 			if (ioc->manu_pg10.OEMIdentifier &&
1886 			    (le32_to_cpu(ioc->manu_pg10.GenericFlags0) &
1887 			    MFG10_GF0_R10_DISPLAY) &&
1888 			    !(raid_device->num_pds % 2))
1889 				r_level = "RAID10";
1890 			else
1891 				r_level = "RAID1E";
1892 			break;
1893 		case MPI2_RAID_VOL_TYPE_RAID1:
1894 			qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1895 			r_level = "RAID1";
1896 			break;
1897 		case MPI2_RAID_VOL_TYPE_RAID10:
1898 			qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1899 			r_level = "RAID10";
1900 			break;
1901 		case MPI2_RAID_VOL_TYPE_UNKNOWN:
1902 		default:
1903 			qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1904 			r_level = "RAIDX";
1905 			break;
1906 		}
1907 
1908 		if (!ioc->hide_ir_msg)
1909 			sdev_printk(KERN_INFO, sdev,
1910 			   "%s: handle(0x%04x), wwid(0x%016llx),"
1911 			    " pd_count(%d), type(%s)\n",
1912 			    r_level, raid_device->handle,
1913 			    (unsigned long long)raid_device->wwid,
1914 			    raid_device->num_pds, ds);
1915 
1916 		if (shost->max_sectors > MPT3SAS_RAID_MAX_SECTORS) {
1917 			blk_queue_max_hw_sectors(sdev->request_queue,
1918 						MPT3SAS_RAID_MAX_SECTORS);
1919 			sdev_printk(KERN_INFO, sdev,
1920 					"Set queue's max_sector to: %u\n",
1921 						MPT3SAS_RAID_MAX_SECTORS);
1922 		}
1923 
1924 		scsih_change_queue_depth(sdev, qdepth);
1925 
1926 		/* raid transport support */
1927 		if (!ioc->is_warpdrive)
1928 			_scsih_set_level(ioc, sdev, raid_device->volume_type);
1929 		return 0;
1930 	}
1931 
1932 	/* non-raid handling */
1933 	if (sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) {
1934 		if (mpt3sas_config_get_volume_handle(ioc, handle,
1935 		    &volume_handle)) {
1936 			dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1937 			    "failure at %s:%d/%s()!\n", ioc->name,
1938 			    __FILE__, __LINE__, __func__));
1939 			return 1;
1940 		}
1941 		if (volume_handle && mpt3sas_config_get_volume_wwid(ioc,
1942 		    volume_handle, &volume_wwid)) {
1943 			dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1944 			    "failure at %s:%d/%s()!\n", ioc->name,
1945 			    __FILE__, __LINE__, __func__));
1946 			return 1;
1947 		}
1948 	}
1949 
1950 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
1951 	sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1952 	   sas_device_priv_data->sas_target->sas_address);
1953 	if (!sas_device) {
1954 		spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1955 		dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1956 		    "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1957 		    __func__));
1958 		return 1;
1959 	}
1960 
1961 	sas_device->volume_handle = volume_handle;
1962 	sas_device->volume_wwid = volume_wwid;
1963 	if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET) {
1964 		qdepth = MPT3SAS_SAS_QUEUE_DEPTH;
1965 		ssp_target = 1;
1966 		if (sas_device->device_info &
1967 				MPI2_SAS_DEVICE_INFO_SEP) {
1968 			sdev_printk(KERN_WARNING, sdev,
1969 			"set ignore_delay_remove for handle(0x%04x)\n",
1970 			sas_device_priv_data->sas_target->handle);
1971 			sas_device_priv_data->ignore_delay_remove = 1;
1972 			ds = "SES";
1973 		} else
1974 			ds = "SSP";
1975 	} else {
1976 		qdepth = MPT3SAS_SATA_QUEUE_DEPTH;
1977 		if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET)
1978 			ds = "STP";
1979 		else if (sas_device->device_info &
1980 		    MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
1981 			ds = "SATA";
1982 	}
1983 
1984 	sdev_printk(KERN_INFO, sdev, "%s: handle(0x%04x), " \
1985 	    "sas_addr(0x%016llx), phy(%d), device_name(0x%016llx)\n",
1986 	    ds, handle, (unsigned long long)sas_device->sas_address,
1987 	    sas_device->phy, (unsigned long long)sas_device->device_name);
1988 	if (sas_device->enclosure_handle != 0)
1989 		sdev_printk(KERN_INFO, sdev,
1990 		     "%s: enclosure_logical_id(0x%016llx), slot(%d)\n",
1991 		     ds, (unsigned long long)
1992 		     sas_device->enclosure_logical_id, sas_device->slot);
1993 	if (sas_device->connector_name[0] != '\0')
1994 		sdev_printk(KERN_INFO, sdev,
1995 		     "%s: enclosure level(0x%04x), connector name( %s)\n",
1996 		     ds, sas_device->enclosure_level,
1997 		     sas_device->connector_name);
1998 
1999 	sas_device_put(sas_device);
2000 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
2001 
2002 	if (!ssp_target)
2003 		_scsih_display_sata_capabilities(ioc, handle, sdev);
2004 
2005 
2006 	scsih_change_queue_depth(sdev, qdepth);
2007 
2008 	if (ssp_target) {
2009 		sas_read_port_mode_page(sdev);
2010 		_scsih_enable_tlr(ioc, sdev);
2011 	}
2012 
2013 	return 0;
2014 }
2015 
2016 /**
2017  * scsih_bios_param - fetch head, sector, cylinder info for a disk
2018  * @sdev: scsi device struct
2019  * @bdev: pointer to block device context
2020  * @capacity: device size (in 512 byte sectors)
2021  * @params: three element array to place output:
2022  *              params[0] number of heads (max 255)
2023  *              params[1] number of sectors (max 63)
2024  *              params[2] number of cylinders
2025  *
2026  * Return nothing.
2027  */
2028 static int
2029 scsih_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2030 	sector_t capacity, int params[])
2031 {
2032 	int		heads;
2033 	int		sectors;
2034 	sector_t	cylinders;
2035 	ulong		dummy;
2036 
2037 	heads = 64;
2038 	sectors = 32;
2039 
2040 	dummy = heads * sectors;
2041 	cylinders = capacity;
2042 	sector_div(cylinders, dummy);
2043 
2044 	/*
2045 	 * Handle extended translation size for logical drives
2046 	 * > 1Gb
2047 	 */
2048 	if ((ulong)capacity >= 0x200000) {
2049 		heads = 255;
2050 		sectors = 63;
2051 		dummy = heads * sectors;
2052 		cylinders = capacity;
2053 		sector_div(cylinders, dummy);
2054 	}
2055 
2056 	/* return result */
2057 	params[0] = heads;
2058 	params[1] = sectors;
2059 	params[2] = cylinders;
2060 
2061 	return 0;
2062 }
2063 
2064 /**
2065  * _scsih_response_code - translation of device response code
2066  * @ioc: per adapter object
2067  * @response_code: response code returned by the device
2068  *
2069  * Return nothing.
2070  */
2071 static void
2072 _scsih_response_code(struct MPT3SAS_ADAPTER *ioc, u8 response_code)
2073 {
2074 	char *desc;
2075 
2076 	switch (response_code) {
2077 	case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
2078 		desc = "task management request completed";
2079 		break;
2080 	case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
2081 		desc = "invalid frame";
2082 		break;
2083 	case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
2084 		desc = "task management request not supported";
2085 		break;
2086 	case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
2087 		desc = "task management request failed";
2088 		break;
2089 	case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
2090 		desc = "task management request succeeded";
2091 		break;
2092 	case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
2093 		desc = "invalid lun";
2094 		break;
2095 	case 0xA:
2096 		desc = "overlapped tag attempted";
2097 		break;
2098 	case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
2099 		desc = "task queued, however not sent to target";
2100 		break;
2101 	default:
2102 		desc = "unknown";
2103 		break;
2104 	}
2105 	pr_warn(MPT3SAS_FMT "response_code(0x%01x): %s\n",
2106 		ioc->name, response_code, desc);
2107 }
2108 
2109 /**
2110  * _scsih_tm_done - tm completion routine
2111  * @ioc: per adapter object
2112  * @smid: system request message index
2113  * @msix_index: MSIX table index supplied by the OS
2114  * @reply: reply message frame(lower 32bit addr)
2115  * Context: none.
2116  *
2117  * The callback handler when using scsih_issue_tm.
2118  *
2119  * Return 1 meaning mf should be freed from _base_interrupt
2120  *        0 means the mf is freed from this function.
2121  */
2122 static u8
2123 _scsih_tm_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
2124 {
2125 	MPI2DefaultReply_t *mpi_reply;
2126 
2127 	if (ioc->tm_cmds.status == MPT3_CMD_NOT_USED)
2128 		return 1;
2129 	if (ioc->tm_cmds.smid != smid)
2130 		return 1;
2131 	ioc->tm_cmds.status |= MPT3_CMD_COMPLETE;
2132 	mpi_reply =  mpt3sas_base_get_reply_virt_addr(ioc, reply);
2133 	if (mpi_reply) {
2134 		memcpy(ioc->tm_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
2135 		ioc->tm_cmds.status |= MPT3_CMD_REPLY_VALID;
2136 	}
2137 	ioc->tm_cmds.status &= ~MPT3_CMD_PENDING;
2138 	complete(&ioc->tm_cmds.done);
2139 	return 1;
2140 }
2141 
2142 /**
2143  * mpt3sas_scsih_set_tm_flag - set per target tm_busy
2144  * @ioc: per adapter object
2145  * @handle: device handle
2146  *
2147  * During taskmangement request, we need to freeze the device queue.
2148  */
2149 void
2150 mpt3sas_scsih_set_tm_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle)
2151 {
2152 	struct MPT3SAS_DEVICE *sas_device_priv_data;
2153 	struct scsi_device *sdev;
2154 	u8 skip = 0;
2155 
2156 	shost_for_each_device(sdev, ioc->shost) {
2157 		if (skip)
2158 			continue;
2159 		sas_device_priv_data = sdev->hostdata;
2160 		if (!sas_device_priv_data)
2161 			continue;
2162 		if (sas_device_priv_data->sas_target->handle == handle) {
2163 			sas_device_priv_data->sas_target->tm_busy = 1;
2164 			skip = 1;
2165 			ioc->ignore_loginfos = 1;
2166 		}
2167 	}
2168 }
2169 
2170 /**
2171  * mpt3sas_scsih_clear_tm_flag - clear per target tm_busy
2172  * @ioc: per adapter object
2173  * @handle: device handle
2174  *
2175  * During taskmangement request, we need to freeze the device queue.
2176  */
2177 void
2178 mpt3sas_scsih_clear_tm_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle)
2179 {
2180 	struct MPT3SAS_DEVICE *sas_device_priv_data;
2181 	struct scsi_device *sdev;
2182 	u8 skip = 0;
2183 
2184 	shost_for_each_device(sdev, ioc->shost) {
2185 		if (skip)
2186 			continue;
2187 		sas_device_priv_data = sdev->hostdata;
2188 		if (!sas_device_priv_data)
2189 			continue;
2190 		if (sas_device_priv_data->sas_target->handle == handle) {
2191 			sas_device_priv_data->sas_target->tm_busy = 0;
2192 			skip = 1;
2193 			ioc->ignore_loginfos = 0;
2194 		}
2195 	}
2196 }
2197 
2198 /**
2199  * mpt3sas_scsih_issue_tm - main routine for sending tm requests
2200  * @ioc: per adapter struct
2201  * @device_handle: device handle
2202  * @channel: the channel assigned by the OS
2203  * @id: the id assigned by the OS
2204  * @lun: lun number
2205  * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in mpi2_init.h)
2206  * @smid_task: smid assigned to the task
2207  * @timeout: timeout in seconds
2208  * Context: user
2209  *
2210  * A generic API for sending task management requests to firmware.
2211  *
2212  * The callback index is set inside `ioc->tm_cb_idx`.
2213  *
2214  * Return SUCCESS or FAILED.
2215  */
2216 int
2217 mpt3sas_scsih_issue_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle, uint channel,
2218 	uint id, uint lun, u8 type, u16 smid_task, ulong timeout)
2219 {
2220 	Mpi2SCSITaskManagementRequest_t *mpi_request;
2221 	Mpi2SCSITaskManagementReply_t *mpi_reply;
2222 	u16 smid = 0;
2223 	u32 ioc_state;
2224 	struct scsiio_tracker *scsi_lookup = NULL;
2225 	int rc;
2226 	u16 msix_task = 0;
2227 
2228 	lockdep_assert_held(&ioc->tm_cmds.mutex);
2229 
2230 	if (ioc->tm_cmds.status != MPT3_CMD_NOT_USED) {
2231 		pr_info(MPT3SAS_FMT "%s: tm_cmd busy!!!\n",
2232 		    __func__, ioc->name);
2233 		return FAILED;
2234 	}
2235 
2236 	if (ioc->shost_recovery || ioc->remove_host ||
2237 	    ioc->pci_error_recovery) {
2238 		pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
2239 		    __func__, ioc->name);
2240 		return FAILED;
2241 	}
2242 
2243 	ioc_state = mpt3sas_base_get_iocstate(ioc, 0);
2244 	if (ioc_state & MPI2_DOORBELL_USED) {
2245 		dhsprintk(ioc, pr_info(MPT3SAS_FMT
2246 			"unexpected doorbell active!\n", ioc->name));
2247 		rc = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2248 		return (!rc) ? SUCCESS : FAILED;
2249 	}
2250 
2251 	if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
2252 		mpt3sas_base_fault_info(ioc, ioc_state &
2253 		    MPI2_DOORBELL_DATA_MASK);
2254 		rc = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2255 		return (!rc) ? SUCCESS : FAILED;
2256 	}
2257 
2258 	smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_cb_idx);
2259 	if (!smid) {
2260 		pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
2261 		    ioc->name, __func__);
2262 		return FAILED;
2263 	}
2264 
2265 	if (type == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK)
2266 		scsi_lookup = &ioc->scsi_lookup[smid_task - 1];
2267 
2268 	dtmprintk(ioc, pr_info(MPT3SAS_FMT
2269 		"sending tm: handle(0x%04x), task_type(0x%02x), smid(%d)\n",
2270 		ioc->name, handle, type, smid_task));
2271 	ioc->tm_cmds.status = MPT3_CMD_PENDING;
2272 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
2273 	ioc->tm_cmds.smid = smid;
2274 	memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
2275 	memset(ioc->tm_cmds.reply, 0, sizeof(Mpi2SCSITaskManagementReply_t));
2276 	mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
2277 	mpi_request->DevHandle = cpu_to_le16(handle);
2278 	mpi_request->TaskType = type;
2279 	mpi_request->TaskMID = cpu_to_le16(smid_task);
2280 	int_to_scsilun(lun, (struct scsi_lun *)mpi_request->LUN);
2281 	mpt3sas_scsih_set_tm_flag(ioc, handle);
2282 	init_completion(&ioc->tm_cmds.done);
2283 	if ((type == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK) &&
2284 			(scsi_lookup->msix_io < ioc->reply_queue_count))
2285 		msix_task = scsi_lookup->msix_io;
2286 	else
2287 		msix_task = 0;
2288 	ioc->put_smid_hi_priority(ioc, smid, msix_task);
2289 	wait_for_completion_timeout(&ioc->tm_cmds.done, timeout*HZ);
2290 	if (!(ioc->tm_cmds.status & MPT3_CMD_COMPLETE)) {
2291 		pr_err(MPT3SAS_FMT "%s: timeout\n",
2292 		    ioc->name, __func__);
2293 		_debug_dump_mf(mpi_request,
2294 		    sizeof(Mpi2SCSITaskManagementRequest_t)/4);
2295 		if (!(ioc->tm_cmds.status & MPT3_CMD_RESET)) {
2296 			rc = mpt3sas_base_hard_reset_handler(ioc,
2297 					FORCE_BIG_HAMMER);
2298 			rc = (!rc) ? SUCCESS : FAILED;
2299 			goto out;
2300 		}
2301 	}
2302 
2303 	/* sync IRQs in case those were busy during flush. */
2304 	mpt3sas_base_sync_reply_irqs(ioc);
2305 
2306 	if (ioc->tm_cmds.status & MPT3_CMD_REPLY_VALID) {
2307 		mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT);
2308 		mpi_reply = ioc->tm_cmds.reply;
2309 		dtmprintk(ioc, pr_info(MPT3SAS_FMT "complete tm: " \
2310 		    "ioc_status(0x%04x), loginfo(0x%08x), term_count(0x%08x)\n",
2311 		    ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
2312 		    le32_to_cpu(mpi_reply->IOCLogInfo),
2313 		    le32_to_cpu(mpi_reply->TerminationCount)));
2314 		if (ioc->logging_level & MPT_DEBUG_TM) {
2315 			_scsih_response_code(ioc, mpi_reply->ResponseCode);
2316 			if (mpi_reply->IOCStatus)
2317 				_debug_dump_mf(mpi_request,
2318 				    sizeof(Mpi2SCSITaskManagementRequest_t)/4);
2319 		}
2320 	}
2321 
2322 	switch (type) {
2323 	case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
2324 		rc = SUCCESS;
2325 		if (scsi_lookup->scmd == NULL)
2326 			break;
2327 		rc = FAILED;
2328 		break;
2329 
2330 	case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
2331 		if (_scsih_scsi_lookup_find_by_target(ioc, id, channel))
2332 			rc = FAILED;
2333 		else
2334 			rc = SUCCESS;
2335 		break;
2336 	case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
2337 	case MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET:
2338 		if (_scsih_scsi_lookup_find_by_lun(ioc, id, lun, channel))
2339 			rc = FAILED;
2340 		else
2341 			rc = SUCCESS;
2342 		break;
2343 	case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
2344 		rc = SUCCESS;
2345 		break;
2346 	default:
2347 		rc = FAILED;
2348 		break;
2349 	}
2350 
2351 out:
2352 	mpt3sas_scsih_clear_tm_flag(ioc, handle);
2353 	ioc->tm_cmds.status = MPT3_CMD_NOT_USED;
2354 	return rc;
2355 }
2356 
2357 int mpt3sas_scsih_issue_locked_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle,
2358 	uint channel, uint id, uint lun, u8 type, u16 smid_task, ulong timeout)
2359 {
2360 	int ret;
2361 
2362 	mutex_lock(&ioc->tm_cmds.mutex);
2363 	ret = mpt3sas_scsih_issue_tm(ioc, handle, channel, id, lun, type,
2364 			smid_task, timeout);
2365 	mutex_unlock(&ioc->tm_cmds.mutex);
2366 
2367 	return ret;
2368 }
2369 
2370 /**
2371  * _scsih_tm_display_info - displays info about the device
2372  * @ioc: per adapter struct
2373  * @scmd: pointer to scsi command object
2374  *
2375  * Called by task management callback handlers.
2376  */
2377 static void
2378 _scsih_tm_display_info(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd)
2379 {
2380 	struct scsi_target *starget = scmd->device->sdev_target;
2381 	struct MPT3SAS_TARGET *priv_target = starget->hostdata;
2382 	struct _sas_device *sas_device = NULL;
2383 	unsigned long flags;
2384 	char *device_str = NULL;
2385 
2386 	if (!priv_target)
2387 		return;
2388 	if (ioc->hide_ir_msg)
2389 		device_str = "WarpDrive";
2390 	else
2391 		device_str = "volume";
2392 
2393 	scsi_print_command(scmd);
2394 	if (priv_target->flags & MPT_TARGET_FLAGS_VOLUME) {
2395 		starget_printk(KERN_INFO, starget,
2396 			"%s handle(0x%04x), %s wwid(0x%016llx)\n",
2397 			device_str, priv_target->handle,
2398 		    device_str, (unsigned long long)priv_target->sas_address);
2399 	} else {
2400 		spin_lock_irqsave(&ioc->sas_device_lock, flags);
2401 		sas_device = __mpt3sas_get_sdev_from_target(ioc, priv_target);
2402 		if (sas_device) {
2403 			if (priv_target->flags &
2404 			    MPT_TARGET_FLAGS_RAID_COMPONENT) {
2405 				starget_printk(KERN_INFO, starget,
2406 				    "volume handle(0x%04x), "
2407 				    "volume wwid(0x%016llx)\n",
2408 				    sas_device->volume_handle,
2409 				   (unsigned long long)sas_device->volume_wwid);
2410 			}
2411 			starget_printk(KERN_INFO, starget,
2412 			    "handle(0x%04x), sas_address(0x%016llx), phy(%d)\n",
2413 			    sas_device->handle,
2414 			    (unsigned long long)sas_device->sas_address,
2415 			    sas_device->phy);
2416 			if (sas_device->enclosure_handle != 0)
2417 				starget_printk(KERN_INFO, starget,
2418 				 "enclosure_logical_id(0x%016llx), slot(%d)\n",
2419 				 (unsigned long long)
2420 				 sas_device->enclosure_logical_id,
2421 				 sas_device->slot);
2422 			if (sas_device->connector_name[0] != '\0')
2423 				starget_printk(KERN_INFO, starget,
2424 				"enclosure level(0x%04x),connector name(%s)\n",
2425 				 sas_device->enclosure_level,
2426 				 sas_device->connector_name);
2427 
2428 			sas_device_put(sas_device);
2429 		}
2430 		spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
2431 	}
2432 }
2433 
2434 /**
2435  * scsih_abort - eh threads main abort routine
2436  * @scmd: pointer to scsi command object
2437  *
2438  * Returns SUCCESS if command aborted else FAILED
2439  */
2440 static int
2441 scsih_abort(struct scsi_cmnd *scmd)
2442 {
2443 	struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2444 	struct MPT3SAS_DEVICE *sas_device_priv_data;
2445 	u16 smid;
2446 	u16 handle;
2447 	int r;
2448 
2449 	sdev_printk(KERN_INFO, scmd->device,
2450 		"attempting task abort! scmd(%p)\n", scmd);
2451 	_scsih_tm_display_info(ioc, scmd);
2452 
2453 	sas_device_priv_data = scmd->device->hostdata;
2454 	if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
2455 		sdev_printk(KERN_INFO, scmd->device,
2456 			"device been deleted! scmd(%p)\n", scmd);
2457 		scmd->result = DID_NO_CONNECT << 16;
2458 		scmd->scsi_done(scmd);
2459 		r = SUCCESS;
2460 		goto out;
2461 	}
2462 
2463 	/* search for the command */
2464 	smid = _scsih_scsi_lookup_find_by_scmd(ioc, scmd);
2465 	if (!smid) {
2466 		scmd->result = DID_RESET << 16;
2467 		r = SUCCESS;
2468 		goto out;
2469 	}
2470 
2471 	/* for hidden raid components and volumes this is not supported */
2472 	if (sas_device_priv_data->sas_target->flags &
2473 	    MPT_TARGET_FLAGS_RAID_COMPONENT ||
2474 	    sas_device_priv_data->sas_target->flags & MPT_TARGET_FLAGS_VOLUME) {
2475 		scmd->result = DID_RESET << 16;
2476 		r = FAILED;
2477 		goto out;
2478 	}
2479 
2480 	mpt3sas_halt_firmware(ioc);
2481 
2482 	handle = sas_device_priv_data->sas_target->handle;
2483 	r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
2484 	    scmd->device->id, scmd->device->lun,
2485 	    MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, smid, 30);
2486 
2487  out:
2488 	sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n",
2489 	    ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2490 	return r;
2491 }
2492 
2493 /**
2494  * scsih_dev_reset - eh threads main device reset routine
2495  * @scmd: pointer to scsi command object
2496  *
2497  * Returns SUCCESS if command aborted else FAILED
2498  */
2499 static int
2500 scsih_dev_reset(struct scsi_cmnd *scmd)
2501 {
2502 	struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2503 	struct MPT3SAS_DEVICE *sas_device_priv_data;
2504 	struct _sas_device *sas_device = NULL;
2505 	u16	handle;
2506 	int r;
2507 
2508 	struct scsi_target *starget = scmd->device->sdev_target;
2509 	struct MPT3SAS_TARGET *target_priv_data = starget->hostdata;
2510 
2511 	sdev_printk(KERN_INFO, scmd->device,
2512 		"attempting device reset! scmd(%p)\n", scmd);
2513 	_scsih_tm_display_info(ioc, scmd);
2514 
2515 	sas_device_priv_data = scmd->device->hostdata;
2516 	if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
2517 		sdev_printk(KERN_INFO, scmd->device,
2518 			"device been deleted! scmd(%p)\n", scmd);
2519 		scmd->result = DID_NO_CONNECT << 16;
2520 		scmd->scsi_done(scmd);
2521 		r = SUCCESS;
2522 		goto out;
2523 	}
2524 
2525 	/* for hidden raid components obtain the volume_handle */
2526 	handle = 0;
2527 	if (sas_device_priv_data->sas_target->flags &
2528 	    MPT_TARGET_FLAGS_RAID_COMPONENT) {
2529 		sas_device = mpt3sas_get_sdev_from_target(ioc,
2530 				target_priv_data);
2531 		if (sas_device)
2532 			handle = sas_device->volume_handle;
2533 	} else
2534 		handle = sas_device_priv_data->sas_target->handle;
2535 
2536 	if (!handle) {
2537 		scmd->result = DID_RESET << 16;
2538 		r = FAILED;
2539 		goto out;
2540 	}
2541 
2542 	r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
2543 	    scmd->device->id, scmd->device->lun,
2544 	    MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET, 0, 30);
2545 
2546  out:
2547 	sdev_printk(KERN_INFO, scmd->device, "device reset: %s scmd(%p)\n",
2548 	    ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2549 
2550 	if (sas_device)
2551 		sas_device_put(sas_device);
2552 
2553 	return r;
2554 }
2555 
2556 /**
2557  * scsih_target_reset - eh threads main target reset routine
2558  * @scmd: pointer to scsi command object
2559  *
2560  * Returns SUCCESS if command aborted else FAILED
2561  */
2562 static int
2563 scsih_target_reset(struct scsi_cmnd *scmd)
2564 {
2565 	struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2566 	struct MPT3SAS_DEVICE *sas_device_priv_data;
2567 	struct _sas_device *sas_device = NULL;
2568 	u16	handle;
2569 	int r;
2570 	struct scsi_target *starget = scmd->device->sdev_target;
2571 	struct MPT3SAS_TARGET *target_priv_data = starget->hostdata;
2572 
2573 	starget_printk(KERN_INFO, starget, "attempting target reset! scmd(%p)\n",
2574 		scmd);
2575 	_scsih_tm_display_info(ioc, scmd);
2576 
2577 	sas_device_priv_data = scmd->device->hostdata;
2578 	if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
2579 		starget_printk(KERN_INFO, starget, "target been deleted! scmd(%p)\n",
2580 			scmd);
2581 		scmd->result = DID_NO_CONNECT << 16;
2582 		scmd->scsi_done(scmd);
2583 		r = SUCCESS;
2584 		goto out;
2585 	}
2586 
2587 	/* for hidden raid components obtain the volume_handle */
2588 	handle = 0;
2589 	if (sas_device_priv_data->sas_target->flags &
2590 	    MPT_TARGET_FLAGS_RAID_COMPONENT) {
2591 		sas_device = mpt3sas_get_sdev_from_target(ioc,
2592 				target_priv_data);
2593 		if (sas_device)
2594 			handle = sas_device->volume_handle;
2595 	} else
2596 		handle = sas_device_priv_data->sas_target->handle;
2597 
2598 	if (!handle) {
2599 		scmd->result = DID_RESET << 16;
2600 		r = FAILED;
2601 		goto out;
2602 	}
2603 
2604 	r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
2605 	    scmd->device->id, 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0,
2606 	    30);
2607 
2608  out:
2609 	starget_printk(KERN_INFO, starget, "target reset: %s scmd(%p)\n",
2610 	    ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2611 
2612 	if (sas_device)
2613 		sas_device_put(sas_device);
2614 
2615 	return r;
2616 }
2617 
2618 
2619 /**
2620  * scsih_host_reset - eh threads main host reset routine
2621  * @scmd: pointer to scsi command object
2622  *
2623  * Returns SUCCESS if command aborted else FAILED
2624  */
2625 static int
2626 scsih_host_reset(struct scsi_cmnd *scmd)
2627 {
2628 	struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2629 	int r, retval;
2630 
2631 	pr_info(MPT3SAS_FMT "attempting host reset! scmd(%p)\n",
2632 	    ioc->name, scmd);
2633 	scsi_print_command(scmd);
2634 
2635 	if (ioc->is_driver_loading) {
2636 		pr_info(MPT3SAS_FMT "Blocking the host reset\n",
2637 		    ioc->name);
2638 		r = FAILED;
2639 		goto out;
2640 	}
2641 
2642 	retval = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2643 	r = (retval < 0) ? FAILED : SUCCESS;
2644 out:
2645 	pr_info(MPT3SAS_FMT "host reset: %s scmd(%p)\n",
2646 	    ioc->name, ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2647 
2648 	return r;
2649 }
2650 
2651 /**
2652  * _scsih_fw_event_add - insert and queue up fw_event
2653  * @ioc: per adapter object
2654  * @fw_event: object describing the event
2655  * Context: This function will acquire ioc->fw_event_lock.
2656  *
2657  * This adds the firmware event object into link list, then queues it up to
2658  * be processed from user context.
2659  *
2660  * Return nothing.
2661  */
2662 static void
2663 _scsih_fw_event_add(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work *fw_event)
2664 {
2665 	unsigned long flags;
2666 
2667 	if (ioc->firmware_event_thread == NULL)
2668 		return;
2669 
2670 	spin_lock_irqsave(&ioc->fw_event_lock, flags);
2671 	fw_event_work_get(fw_event);
2672 	INIT_LIST_HEAD(&fw_event->list);
2673 	list_add_tail(&fw_event->list, &ioc->fw_event_list);
2674 	INIT_WORK(&fw_event->work, _firmware_event_work);
2675 	fw_event_work_get(fw_event);
2676 	queue_work(ioc->firmware_event_thread, &fw_event->work);
2677 	spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2678 }
2679 
2680 /**
2681  * _scsih_fw_event_del_from_list - delete fw_event from the list
2682  * @ioc: per adapter object
2683  * @fw_event: object describing the event
2684  * Context: This function will acquire ioc->fw_event_lock.
2685  *
2686  * If the fw_event is on the fw_event_list, remove it and do a put.
2687  *
2688  * Return nothing.
2689  */
2690 static void
2691 _scsih_fw_event_del_from_list(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work
2692 	*fw_event)
2693 {
2694 	unsigned long flags;
2695 
2696 	spin_lock_irqsave(&ioc->fw_event_lock, flags);
2697 	if (!list_empty(&fw_event->list)) {
2698 		list_del_init(&fw_event->list);
2699 		fw_event_work_put(fw_event);
2700 	}
2701 	spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2702 }
2703 
2704 
2705  /**
2706  * mpt3sas_send_trigger_data_event - send event for processing trigger data
2707  * @ioc: per adapter object
2708  * @event_data: trigger event data
2709  *
2710  * Return nothing.
2711  */
2712 void
2713 mpt3sas_send_trigger_data_event(struct MPT3SAS_ADAPTER *ioc,
2714 	struct SL_WH_TRIGGERS_EVENT_DATA_T *event_data)
2715 {
2716 	struct fw_event_work *fw_event;
2717 	u16 sz;
2718 
2719 	if (ioc->is_driver_loading)
2720 		return;
2721 	sz = sizeof(*event_data);
2722 	fw_event = alloc_fw_event_work(sz);
2723 	if (!fw_event)
2724 		return;
2725 	fw_event->event = MPT3SAS_PROCESS_TRIGGER_DIAG;
2726 	fw_event->ioc = ioc;
2727 	memcpy(fw_event->event_data, event_data, sizeof(*event_data));
2728 	_scsih_fw_event_add(ioc, fw_event);
2729 	fw_event_work_put(fw_event);
2730 }
2731 
2732 /**
2733  * _scsih_error_recovery_delete_devices - remove devices not responding
2734  * @ioc: per adapter object
2735  *
2736  * Return nothing.
2737  */
2738 static void
2739 _scsih_error_recovery_delete_devices(struct MPT3SAS_ADAPTER *ioc)
2740 {
2741 	struct fw_event_work *fw_event;
2742 
2743 	if (ioc->is_driver_loading)
2744 		return;
2745 	fw_event = alloc_fw_event_work(0);
2746 	if (!fw_event)
2747 		return;
2748 	fw_event->event = MPT3SAS_REMOVE_UNRESPONDING_DEVICES;
2749 	fw_event->ioc = ioc;
2750 	_scsih_fw_event_add(ioc, fw_event);
2751 	fw_event_work_put(fw_event);
2752 }
2753 
2754 /**
2755  * mpt3sas_port_enable_complete - port enable completed (fake event)
2756  * @ioc: per adapter object
2757  *
2758  * Return nothing.
2759  */
2760 void
2761 mpt3sas_port_enable_complete(struct MPT3SAS_ADAPTER *ioc)
2762 {
2763 	struct fw_event_work *fw_event;
2764 
2765 	fw_event = alloc_fw_event_work(0);
2766 	if (!fw_event)
2767 		return;
2768 	fw_event->event = MPT3SAS_PORT_ENABLE_COMPLETE;
2769 	fw_event->ioc = ioc;
2770 	_scsih_fw_event_add(ioc, fw_event);
2771 	fw_event_work_put(fw_event);
2772 }
2773 
2774 static struct fw_event_work *dequeue_next_fw_event(struct MPT3SAS_ADAPTER *ioc)
2775 {
2776 	unsigned long flags;
2777 	struct fw_event_work *fw_event = NULL;
2778 
2779 	spin_lock_irqsave(&ioc->fw_event_lock, flags);
2780 	if (!list_empty(&ioc->fw_event_list)) {
2781 		fw_event = list_first_entry(&ioc->fw_event_list,
2782 				struct fw_event_work, list);
2783 		list_del_init(&fw_event->list);
2784 	}
2785 	spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2786 
2787 	return fw_event;
2788 }
2789 
2790 /**
2791  * _scsih_fw_event_cleanup_queue - cleanup event queue
2792  * @ioc: per adapter object
2793  *
2794  * Walk the firmware event queue, either killing timers, or waiting
2795  * for outstanding events to complete
2796  *
2797  * Return nothing.
2798  */
2799 static void
2800 _scsih_fw_event_cleanup_queue(struct MPT3SAS_ADAPTER *ioc)
2801 {
2802 	struct fw_event_work *fw_event;
2803 
2804 	if (list_empty(&ioc->fw_event_list) ||
2805 	     !ioc->firmware_event_thread || in_interrupt())
2806 		return;
2807 
2808 	while ((fw_event = dequeue_next_fw_event(ioc))) {
2809 		/*
2810 		 * Wait on the fw_event to complete. If this returns 1, then
2811 		 * the event was never executed, and we need a put for the
2812 		 * reference the work had on the fw_event.
2813 		 *
2814 		 * If it did execute, we wait for it to finish, and the put will
2815 		 * happen from _firmware_event_work()
2816 		 */
2817 		if (cancel_work_sync(&fw_event->work))
2818 			fw_event_work_put(fw_event);
2819 
2820 		fw_event_work_put(fw_event);
2821 	}
2822 }
2823 
2824 /**
2825  * _scsih_internal_device_block - block the sdev device
2826  * @sdev: per device object
2827  * @sas_device_priv_data : per device driver private data
2828  *
2829  * make sure device is blocked without error, if not
2830  * print an error
2831  */
2832 static void
2833 _scsih_internal_device_block(struct scsi_device *sdev,
2834 			struct MPT3SAS_DEVICE *sas_device_priv_data)
2835 {
2836 	int r = 0;
2837 
2838 	sdev_printk(KERN_INFO, sdev, "device_block, handle(0x%04x)\n",
2839 	    sas_device_priv_data->sas_target->handle);
2840 	sas_device_priv_data->block = 1;
2841 
2842 	r = scsi_internal_device_block(sdev);
2843 	if (r == -EINVAL)
2844 		sdev_printk(KERN_WARNING, sdev,
2845 		    "device_block failed with return(%d) for handle(0x%04x)\n",
2846 		    r, sas_device_priv_data->sas_target->handle);
2847 }
2848 
2849 /**
2850  * _scsih_internal_device_unblock - unblock the sdev device
2851  * @sdev: per device object
2852  * @sas_device_priv_data : per device driver private data
2853  * make sure device is unblocked without error, if not retry
2854  * by blocking and then unblocking
2855  */
2856 
2857 static void
2858 _scsih_internal_device_unblock(struct scsi_device *sdev,
2859 			struct MPT3SAS_DEVICE *sas_device_priv_data)
2860 {
2861 	int r = 0;
2862 
2863 	sdev_printk(KERN_WARNING, sdev, "device_unblock and setting to running, "
2864 	    "handle(0x%04x)\n", sas_device_priv_data->sas_target->handle);
2865 	sas_device_priv_data->block = 0;
2866 	r = scsi_internal_device_unblock(sdev, SDEV_RUNNING);
2867 	if (r == -EINVAL) {
2868 		/* The device has been set to SDEV_RUNNING by SD layer during
2869 		 * device addition but the request queue is still stopped by
2870 		 * our earlier block call. We need to perform a block again
2871 		 * to get the device to SDEV_BLOCK and then to SDEV_RUNNING */
2872 
2873 		sdev_printk(KERN_WARNING, sdev,
2874 		    "device_unblock failed with return(%d) for handle(0x%04x) "
2875 		    "performing a block followed by an unblock\n",
2876 		    r, sas_device_priv_data->sas_target->handle);
2877 		sas_device_priv_data->block = 1;
2878 		r = scsi_internal_device_block(sdev);
2879 		if (r)
2880 			sdev_printk(KERN_WARNING, sdev, "retried device_block "
2881 			    "failed with return(%d) for handle(0x%04x)\n",
2882 			    r, sas_device_priv_data->sas_target->handle);
2883 
2884 		sas_device_priv_data->block = 0;
2885 		r = scsi_internal_device_unblock(sdev, SDEV_RUNNING);
2886 		if (r)
2887 			sdev_printk(KERN_WARNING, sdev, "retried device_unblock"
2888 			    " failed with return(%d) for handle(0x%04x)\n",
2889 			    r, sas_device_priv_data->sas_target->handle);
2890 	}
2891 }
2892 
2893 /**
2894  * _scsih_ublock_io_all_device - unblock every device
2895  * @ioc: per adapter object
2896  *
2897  * change the device state from block to running
2898  */
2899 static void
2900 _scsih_ublock_io_all_device(struct MPT3SAS_ADAPTER *ioc)
2901 {
2902 	struct MPT3SAS_DEVICE *sas_device_priv_data;
2903 	struct scsi_device *sdev;
2904 
2905 	shost_for_each_device(sdev, ioc->shost) {
2906 		sas_device_priv_data = sdev->hostdata;
2907 		if (!sas_device_priv_data)
2908 			continue;
2909 		if (!sas_device_priv_data->block)
2910 			continue;
2911 
2912 		dewtprintk(ioc, sdev_printk(KERN_INFO, sdev,
2913 			"device_running, handle(0x%04x)\n",
2914 		    sas_device_priv_data->sas_target->handle));
2915 		_scsih_internal_device_unblock(sdev, sas_device_priv_data);
2916 	}
2917 }
2918 
2919 
2920 /**
2921  * _scsih_ublock_io_device - prepare device to be deleted
2922  * @ioc: per adapter object
2923  * @sas_addr: sas address
2924  *
2925  * unblock then put device in offline state
2926  */
2927 static void
2928 _scsih_ublock_io_device(struct MPT3SAS_ADAPTER *ioc, u64 sas_address)
2929 {
2930 	struct MPT3SAS_DEVICE *sas_device_priv_data;
2931 	struct scsi_device *sdev;
2932 
2933 	shost_for_each_device(sdev, ioc->shost) {
2934 		sas_device_priv_data = sdev->hostdata;
2935 		if (!sas_device_priv_data)
2936 			continue;
2937 		if (sas_device_priv_data->sas_target->sas_address
2938 		    != sas_address)
2939 			continue;
2940 		if (sas_device_priv_data->block)
2941 			_scsih_internal_device_unblock(sdev,
2942 				sas_device_priv_data);
2943 	}
2944 }
2945 
2946 /**
2947  * _scsih_block_io_all_device - set the device state to SDEV_BLOCK
2948  * @ioc: per adapter object
2949  * @handle: device handle
2950  *
2951  * During device pull we need to appropriately set the sdev state.
2952  */
2953 static void
2954 _scsih_block_io_all_device(struct MPT3SAS_ADAPTER *ioc)
2955 {
2956 	struct MPT3SAS_DEVICE *sas_device_priv_data;
2957 	struct scsi_device *sdev;
2958 
2959 	shost_for_each_device(sdev, ioc->shost) {
2960 		sas_device_priv_data = sdev->hostdata;
2961 		if (!sas_device_priv_data)
2962 			continue;
2963 		if (sas_device_priv_data->block)
2964 			continue;
2965 		if (sas_device_priv_data->ignore_delay_remove) {
2966 			sdev_printk(KERN_INFO, sdev,
2967 			"%s skip device_block for SES handle(0x%04x)\n",
2968 			__func__, sas_device_priv_data->sas_target->handle);
2969 			continue;
2970 		}
2971 		_scsih_internal_device_block(sdev, sas_device_priv_data);
2972 	}
2973 }
2974 
2975 /**
2976  * _scsih_block_io_device - set the device state to SDEV_BLOCK
2977  * @ioc: per adapter object
2978  * @handle: device handle
2979  *
2980  * During device pull we need to appropriately set the sdev state.
2981  */
2982 static void
2983 _scsih_block_io_device(struct MPT3SAS_ADAPTER *ioc, u16 handle)
2984 {
2985 	struct MPT3SAS_DEVICE *sas_device_priv_data;
2986 	struct scsi_device *sdev;
2987 	struct _sas_device *sas_device;
2988 
2989 	sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
2990 	if (!sas_device)
2991 		return;
2992 
2993 	shost_for_each_device(sdev, ioc->shost) {
2994 		sas_device_priv_data = sdev->hostdata;
2995 		if (!sas_device_priv_data)
2996 			continue;
2997 		if (sas_device_priv_data->sas_target->handle != handle)
2998 			continue;
2999 		if (sas_device_priv_data->block)
3000 			continue;
3001 		if (sas_device->pend_sas_rphy_add)
3002 			continue;
3003 		if (sas_device_priv_data->ignore_delay_remove) {
3004 			sdev_printk(KERN_INFO, sdev,
3005 			"%s skip device_block for SES handle(0x%04x)\n",
3006 			__func__, sas_device_priv_data->sas_target->handle);
3007 			continue;
3008 		}
3009 		_scsih_internal_device_block(sdev, sas_device_priv_data);
3010 	}
3011 
3012 	sas_device_put(sas_device);
3013 }
3014 
3015 /**
3016  * _scsih_block_io_to_children_attached_to_ex
3017  * @ioc: per adapter object
3018  * @sas_expander: the sas_device object
3019  *
3020  * This routine set sdev state to SDEV_BLOCK for all devices
3021  * attached to this expander. This function called when expander is
3022  * pulled.
3023  */
3024 static void
3025 _scsih_block_io_to_children_attached_to_ex(struct MPT3SAS_ADAPTER *ioc,
3026 	struct _sas_node *sas_expander)
3027 {
3028 	struct _sas_port *mpt3sas_port;
3029 	struct _sas_device *sas_device;
3030 	struct _sas_node *expander_sibling;
3031 	unsigned long flags;
3032 
3033 	if (!sas_expander)
3034 		return;
3035 
3036 	list_for_each_entry(mpt3sas_port,
3037 	   &sas_expander->sas_port_list, port_list) {
3038 		if (mpt3sas_port->remote_identify.device_type ==
3039 		    SAS_END_DEVICE) {
3040 			spin_lock_irqsave(&ioc->sas_device_lock, flags);
3041 			sas_device = __mpt3sas_get_sdev_by_addr(ioc,
3042 			    mpt3sas_port->remote_identify.sas_address);
3043 			if (sas_device) {
3044 				set_bit(sas_device->handle,
3045 						ioc->blocking_handles);
3046 				sas_device_put(sas_device);
3047 			}
3048 			spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
3049 		}
3050 	}
3051 
3052 	list_for_each_entry(mpt3sas_port,
3053 	   &sas_expander->sas_port_list, port_list) {
3054 
3055 		if (mpt3sas_port->remote_identify.device_type ==
3056 		    SAS_EDGE_EXPANDER_DEVICE ||
3057 		    mpt3sas_port->remote_identify.device_type ==
3058 		    SAS_FANOUT_EXPANDER_DEVICE) {
3059 			expander_sibling =
3060 			    mpt3sas_scsih_expander_find_by_sas_address(
3061 			    ioc, mpt3sas_port->remote_identify.sas_address);
3062 			_scsih_block_io_to_children_attached_to_ex(ioc,
3063 			    expander_sibling);
3064 		}
3065 	}
3066 }
3067 
3068 /**
3069  * _scsih_block_io_to_children_attached_directly
3070  * @ioc: per adapter object
3071  * @event_data: topology change event data
3072  *
3073  * This routine set sdev state to SDEV_BLOCK for all devices
3074  * direct attached during device pull.
3075  */
3076 static void
3077 _scsih_block_io_to_children_attached_directly(struct MPT3SAS_ADAPTER *ioc,
3078 	Mpi2EventDataSasTopologyChangeList_t *event_data)
3079 {
3080 	int i;
3081 	u16 handle;
3082 	u16 reason_code;
3083 
3084 	for (i = 0; i < event_data->NumEntries; i++) {
3085 		handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
3086 		if (!handle)
3087 			continue;
3088 		reason_code = event_data->PHY[i].PhyStatus &
3089 		    MPI2_EVENT_SAS_TOPO_RC_MASK;
3090 		if (reason_code == MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING)
3091 			_scsih_block_io_device(ioc, handle);
3092 	}
3093 }
3094 
3095 /**
3096  * _scsih_tm_tr_send - send task management request
3097  * @ioc: per adapter object
3098  * @handle: device handle
3099  * Context: interrupt time.
3100  *
3101  * This code is to initiate the device removal handshake protocol
3102  * with controller firmware.  This function will issue target reset
3103  * using high priority request queue.  It will send a sas iounit
3104  * control request (MPI2_SAS_OP_REMOVE_DEVICE) from this completion.
3105  *
3106  * This is designed to send muliple task management request at the same
3107  * time to the fifo. If the fifo is full, we will append the request,
3108  * and process it in a future completion.
3109  */
3110 static void
3111 _scsih_tm_tr_send(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3112 {
3113 	Mpi2SCSITaskManagementRequest_t *mpi_request;
3114 	u16 smid;
3115 	struct _sas_device *sas_device = NULL;
3116 	struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
3117 	u64 sas_address = 0;
3118 	unsigned long flags;
3119 	struct _tr_list *delayed_tr;
3120 	u32 ioc_state;
3121 
3122 	if (ioc->remove_host) {
3123 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3124 			"%s: host has been removed: handle(0x%04x)\n",
3125 			__func__, ioc->name, handle));
3126 		return;
3127 	} else if (ioc->pci_error_recovery) {
3128 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3129 			"%s: host in pci error recovery: handle(0x%04x)\n",
3130 			__func__, ioc->name,
3131 		    handle));
3132 		return;
3133 	}
3134 	ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3135 	if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3136 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3137 			"%s: host is not operational: handle(0x%04x)\n",
3138 			__func__, ioc->name,
3139 		   handle));
3140 		return;
3141 	}
3142 
3143 	/* if PD, then return */
3144 	if (test_bit(handle, ioc->pd_handles))
3145 		return;
3146 
3147 	clear_bit(handle, ioc->pend_os_device_add);
3148 
3149 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
3150 	sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
3151 	if (sas_device && sas_device->starget &&
3152 	    sas_device->starget->hostdata) {
3153 		sas_target_priv_data = sas_device->starget->hostdata;
3154 		sas_target_priv_data->deleted = 1;
3155 		sas_address = sas_device->sas_address;
3156 	}
3157 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
3158 
3159 	if (sas_target_priv_data) {
3160 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3161 			"setting delete flag: handle(0x%04x), sas_addr(0x%016llx)\n",
3162 			ioc->name, handle,
3163 		    (unsigned long long)sas_address));
3164 		if (sas_device->enclosure_handle != 0)
3165 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
3166 			 "setting delete flag:enclosure logical id(0x%016llx),"
3167 			 " slot(%d)\n", ioc->name, (unsigned long long)
3168 			  sas_device->enclosure_logical_id,
3169 			  sas_device->slot));
3170 		if (sas_device->connector_name[0] != '\0')
3171 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
3172 			 "setting delete flag: enclosure level(0x%04x),"
3173 			 " connector name( %s)\n", ioc->name,
3174 			  sas_device->enclosure_level,
3175 			  sas_device->connector_name));
3176 		_scsih_ublock_io_device(ioc, sas_address);
3177 		sas_target_priv_data->handle = MPT3SAS_INVALID_DEVICE_HANDLE;
3178 	}
3179 
3180 	smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_tr_cb_idx);
3181 	if (!smid) {
3182 		delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3183 		if (!delayed_tr)
3184 			goto out;
3185 		INIT_LIST_HEAD(&delayed_tr->list);
3186 		delayed_tr->handle = handle;
3187 		list_add_tail(&delayed_tr->list, &ioc->delayed_tr_list);
3188 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3189 		    "DELAYED:tr:handle(0x%04x), (open)\n",
3190 		    ioc->name, handle));
3191 		goto out;
3192 	}
3193 
3194 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
3195 		"tr_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3196 		ioc->name, handle, smid,
3197 	    ioc->tm_tr_cb_idx));
3198 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3199 	memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
3200 	mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
3201 	mpi_request->DevHandle = cpu_to_le16(handle);
3202 	mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
3203 	set_bit(handle, ioc->device_remove_in_progress);
3204 	ioc->put_smid_hi_priority(ioc, smid, 0);
3205 	mpt3sas_trigger_master(ioc, MASTER_TRIGGER_DEVICE_REMOVAL);
3206 
3207 out:
3208 	if (sas_device)
3209 		sas_device_put(sas_device);
3210 }
3211 
3212 /**
3213  * _scsih_tm_tr_complete -
3214  * @ioc: per adapter object
3215  * @smid: system request message index
3216  * @msix_index: MSIX table index supplied by the OS
3217  * @reply: reply message frame(lower 32bit addr)
3218  * Context: interrupt time.
3219  *
3220  * This is the target reset completion routine.
3221  * This code is part of the code to initiate the device removal
3222  * handshake protocol with controller firmware.
3223  * It will send a sas iounit control request (MPI2_SAS_OP_REMOVE_DEVICE)
3224  *
3225  * Return 1 meaning mf should be freed from _base_interrupt
3226  *        0 means the mf is freed from this function.
3227  */
3228 static u8
3229 _scsih_tm_tr_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
3230 	u32 reply)
3231 {
3232 	u16 handle;
3233 	Mpi2SCSITaskManagementRequest_t *mpi_request_tm;
3234 	Mpi2SCSITaskManagementReply_t *mpi_reply =
3235 	    mpt3sas_base_get_reply_virt_addr(ioc, reply);
3236 	Mpi2SasIoUnitControlRequest_t *mpi_request;
3237 	u16 smid_sas_ctrl;
3238 	u32 ioc_state;
3239 	struct _sc_list *delayed_sc;
3240 
3241 	if (ioc->remove_host) {
3242 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3243 			"%s: host has been removed\n", __func__, ioc->name));
3244 		return 1;
3245 	} else if (ioc->pci_error_recovery) {
3246 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3247 			"%s: host in pci error recovery\n", __func__,
3248 			ioc->name));
3249 		return 1;
3250 	}
3251 	ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3252 	if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3253 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3254 			"%s: host is not operational\n", __func__, ioc->name));
3255 		return 1;
3256 	}
3257 	if (unlikely(!mpi_reply)) {
3258 		pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3259 		    ioc->name, __FILE__, __LINE__, __func__);
3260 		return 1;
3261 	}
3262 	mpi_request_tm = mpt3sas_base_get_msg_frame(ioc, smid);
3263 	handle = le16_to_cpu(mpi_request_tm->DevHandle);
3264 	if (handle != le16_to_cpu(mpi_reply->DevHandle)) {
3265 		dewtprintk(ioc, pr_err(MPT3SAS_FMT
3266 			"spurious interrupt: handle(0x%04x:0x%04x), smid(%d)!!!\n",
3267 			ioc->name, handle,
3268 		    le16_to_cpu(mpi_reply->DevHandle), smid));
3269 		return 0;
3270 	}
3271 
3272 	mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT);
3273 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
3274 	    "tr_complete:handle(0x%04x), (open) smid(%d), ioc_status(0x%04x), "
3275 	    "loginfo(0x%08x), completed(%d)\n", ioc->name,
3276 	    handle, smid, le16_to_cpu(mpi_reply->IOCStatus),
3277 	    le32_to_cpu(mpi_reply->IOCLogInfo),
3278 	    le32_to_cpu(mpi_reply->TerminationCount)));
3279 
3280 	smid_sas_ctrl = mpt3sas_base_get_smid(ioc, ioc->tm_sas_control_cb_idx);
3281 	if (!smid_sas_ctrl) {
3282 		delayed_sc = kzalloc(sizeof(*delayed_sc), GFP_ATOMIC);
3283 		if (!delayed_sc)
3284 			return _scsih_check_for_pending_tm(ioc, smid);
3285 		INIT_LIST_HEAD(&delayed_sc->list);
3286 		delayed_sc->handle = mpi_request_tm->DevHandle;
3287 		list_add_tail(&delayed_sc->list, &ioc->delayed_sc_list);
3288 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3289 		    "DELAYED:sc:handle(0x%04x), (open)\n",
3290 		    ioc->name, handle));
3291 		return _scsih_check_for_pending_tm(ioc, smid);
3292 	}
3293 
3294 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
3295 		"sc_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3296 		ioc->name, handle, smid_sas_ctrl,
3297 	    ioc->tm_sas_control_cb_idx));
3298 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid_sas_ctrl);
3299 	memset(mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
3300 	mpi_request->Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
3301 	mpi_request->Operation = MPI2_SAS_OP_REMOVE_DEVICE;
3302 	mpi_request->DevHandle = mpi_request_tm->DevHandle;
3303 	ioc->put_smid_default(ioc, smid_sas_ctrl);
3304 
3305 	return _scsih_check_for_pending_tm(ioc, smid);
3306 }
3307 
3308 
3309 /**
3310  * _scsih_sas_control_complete - completion routine
3311  * @ioc: per adapter object
3312  * @smid: system request message index
3313  * @msix_index: MSIX table index supplied by the OS
3314  * @reply: reply message frame(lower 32bit addr)
3315  * Context: interrupt time.
3316  *
3317  * This is the sas iounit control completion routine.
3318  * This code is part of the code to initiate the device removal
3319  * handshake protocol with controller firmware.
3320  *
3321  * Return 1 meaning mf should be freed from _base_interrupt
3322  *        0 means the mf is freed from this function.
3323  */
3324 static u8
3325 _scsih_sas_control_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid,
3326 	u8 msix_index, u32 reply)
3327 {
3328 	Mpi2SasIoUnitControlReply_t *mpi_reply =
3329 	    mpt3sas_base_get_reply_virt_addr(ioc, reply);
3330 
3331 	if (likely(mpi_reply)) {
3332 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3333 		"sc_complete:handle(0x%04x), (open) "
3334 		"smid(%d), ioc_status(0x%04x), loginfo(0x%08x)\n",
3335 		ioc->name, le16_to_cpu(mpi_reply->DevHandle), smid,
3336 		le16_to_cpu(mpi_reply->IOCStatus),
3337 		le32_to_cpu(mpi_reply->IOCLogInfo)));
3338 		if (le16_to_cpu(mpi_reply->IOCStatus) ==
3339 		     MPI2_IOCSTATUS_SUCCESS) {
3340 			clear_bit(le16_to_cpu(mpi_reply->DevHandle),
3341 			    ioc->device_remove_in_progress);
3342 		}
3343 	} else {
3344 		pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3345 		    ioc->name, __FILE__, __LINE__, __func__);
3346 	}
3347 	return mpt3sas_check_for_pending_internal_cmds(ioc, smid);
3348 }
3349 
3350 /**
3351  * _scsih_tm_tr_volume_send - send target reset request for volumes
3352  * @ioc: per adapter object
3353  * @handle: device handle
3354  * Context: interrupt time.
3355  *
3356  * This is designed to send muliple task management request at the same
3357  * time to the fifo. If the fifo is full, we will append the request,
3358  * and process it in a future completion.
3359  */
3360 static void
3361 _scsih_tm_tr_volume_send(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3362 {
3363 	Mpi2SCSITaskManagementRequest_t *mpi_request;
3364 	u16 smid;
3365 	struct _tr_list *delayed_tr;
3366 
3367 	if (ioc->shost_recovery || ioc->remove_host ||
3368 	    ioc->pci_error_recovery) {
3369 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3370 			"%s: host reset in progress!\n",
3371 			__func__, ioc->name));
3372 		return;
3373 	}
3374 
3375 	smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_tr_volume_cb_idx);
3376 	if (!smid) {
3377 		delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3378 		if (!delayed_tr)
3379 			return;
3380 		INIT_LIST_HEAD(&delayed_tr->list);
3381 		delayed_tr->handle = handle;
3382 		list_add_tail(&delayed_tr->list, &ioc->delayed_tr_volume_list);
3383 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3384 		    "DELAYED:tr:handle(0x%04x), (open)\n",
3385 		    ioc->name, handle));
3386 		return;
3387 	}
3388 
3389 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
3390 		"tr_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3391 		ioc->name, handle, smid,
3392 	    ioc->tm_tr_volume_cb_idx));
3393 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3394 	memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
3395 	mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
3396 	mpi_request->DevHandle = cpu_to_le16(handle);
3397 	mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
3398 	ioc->put_smid_hi_priority(ioc, smid, 0);
3399 }
3400 
3401 /**
3402  * _scsih_tm_volume_tr_complete - target reset completion
3403  * @ioc: per adapter object
3404  * @smid: system request message index
3405  * @msix_index: MSIX table index supplied by the OS
3406  * @reply: reply message frame(lower 32bit addr)
3407  * Context: interrupt time.
3408  *
3409  * Return 1 meaning mf should be freed from _base_interrupt
3410  *        0 means the mf is freed from this function.
3411  */
3412 static u8
3413 _scsih_tm_volume_tr_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid,
3414 	u8 msix_index, u32 reply)
3415 {
3416 	u16 handle;
3417 	Mpi2SCSITaskManagementRequest_t *mpi_request_tm;
3418 	Mpi2SCSITaskManagementReply_t *mpi_reply =
3419 	    mpt3sas_base_get_reply_virt_addr(ioc, reply);
3420 
3421 	if (ioc->shost_recovery || ioc->remove_host ||
3422 	    ioc->pci_error_recovery) {
3423 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3424 			"%s: host reset in progress!\n",
3425 			__func__, ioc->name));
3426 		return 1;
3427 	}
3428 	if (unlikely(!mpi_reply)) {
3429 		pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3430 		    ioc->name, __FILE__, __LINE__, __func__);
3431 		return 1;
3432 	}
3433 
3434 	mpi_request_tm = mpt3sas_base_get_msg_frame(ioc, smid);
3435 	handle = le16_to_cpu(mpi_request_tm->DevHandle);
3436 	if (handle != le16_to_cpu(mpi_reply->DevHandle)) {
3437 		dewtprintk(ioc, pr_err(MPT3SAS_FMT
3438 			"spurious interrupt: handle(0x%04x:0x%04x), smid(%d)!!!\n",
3439 			ioc->name, handle,
3440 		    le16_to_cpu(mpi_reply->DevHandle), smid));
3441 		return 0;
3442 	}
3443 
3444 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
3445 	    "tr_complete:handle(0x%04x), (open) smid(%d), ioc_status(0x%04x), "
3446 	    "loginfo(0x%08x), completed(%d)\n", ioc->name,
3447 	    handle, smid, le16_to_cpu(mpi_reply->IOCStatus),
3448 	    le32_to_cpu(mpi_reply->IOCLogInfo),
3449 	    le32_to_cpu(mpi_reply->TerminationCount)));
3450 
3451 	return _scsih_check_for_pending_tm(ioc, smid);
3452 }
3453 
3454 /**
3455  * _scsih_issue_delayed_event_ack - issue delayed Event ACK messages
3456  * @ioc: per adapter object
3457  * @smid: system request message index
3458  * @event: Event ID
3459  * @event_context: used to track events uniquely
3460  *
3461  * Context - processed in interrupt context.
3462  */
3463 static void
3464 _scsih_issue_delayed_event_ack(struct MPT3SAS_ADAPTER *ioc, u16 smid, u16 event,
3465 				u32 event_context)
3466 {
3467 	Mpi2EventAckRequest_t *ack_request;
3468 	int i = smid - ioc->internal_smid;
3469 	unsigned long flags;
3470 
3471 	/* Without releasing the smid just update the
3472 	 * call back index and reuse the same smid for
3473 	 * processing this delayed request
3474 	 */
3475 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
3476 	ioc->internal_lookup[i].cb_idx = ioc->base_cb_idx;
3477 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
3478 
3479 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
3480 		"EVENT ACK: event(0x%04x), smid(%d), cb(%d)\n",
3481 		ioc->name, le16_to_cpu(event), smid,
3482 		ioc->base_cb_idx));
3483 	ack_request = mpt3sas_base_get_msg_frame(ioc, smid);
3484 	memset(ack_request, 0, sizeof(Mpi2EventAckRequest_t));
3485 	ack_request->Function = MPI2_FUNCTION_EVENT_ACK;
3486 	ack_request->Event = event;
3487 	ack_request->EventContext = event_context;
3488 	ack_request->VF_ID = 0;  /* TODO */
3489 	ack_request->VP_ID = 0;
3490 	ioc->put_smid_default(ioc, smid);
3491 }
3492 
3493 /**
3494  * _scsih_issue_delayed_sas_io_unit_ctrl - issue delayed
3495  *				sas_io_unit_ctrl messages
3496  * @ioc: per adapter object
3497  * @smid: system request message index
3498  * @handle: device handle
3499  *
3500  * Context - processed in interrupt context.
3501  */
3502 static void
3503 _scsih_issue_delayed_sas_io_unit_ctrl(struct MPT3SAS_ADAPTER *ioc,
3504 					u16 smid, u16 handle)
3505 	{
3506 		Mpi2SasIoUnitControlRequest_t *mpi_request;
3507 		u32 ioc_state;
3508 		int i = smid - ioc->internal_smid;
3509 		unsigned long flags;
3510 
3511 		if (ioc->remove_host) {
3512 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
3513 			    "%s: host has been removed\n",
3514 			     __func__, ioc->name));
3515 			return;
3516 		} else if (ioc->pci_error_recovery) {
3517 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
3518 			    "%s: host in pci error recovery\n",
3519 			    __func__, ioc->name));
3520 		return;
3521 	}
3522 	ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3523 	if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3524 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3525 		    "%s: host is not operational\n",
3526 		    __func__, ioc->name));
3527 		return;
3528 	}
3529 
3530 	/* Without releasing the smid just update the
3531 	 * call back index and reuse the same smid for
3532 	 * processing this delayed request
3533 	 */
3534 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
3535 	ioc->internal_lookup[i].cb_idx = ioc->tm_sas_control_cb_idx;
3536 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
3537 
3538 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
3539 	    "sc_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3540 	    ioc->name, le16_to_cpu(handle), smid,
3541 	    ioc->tm_sas_control_cb_idx));
3542 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3543 	memset(mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
3544 	mpi_request->Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
3545 	mpi_request->Operation = MPI2_SAS_OP_REMOVE_DEVICE;
3546 	mpi_request->DevHandle = handle;
3547 	ioc->put_smid_default(ioc, smid);
3548 }
3549 
3550 /**
3551  * _scsih_check_for_pending_internal_cmds - check for pending internal messages
3552  * @ioc: per adapter object
3553  * @smid: system request message index
3554  *
3555  * Context: Executed in interrupt context
3556  *
3557  * This will check delayed internal messages list, and process the
3558  * next request.
3559  *
3560  * Return 1 meaning mf should be freed from _base_interrupt
3561  *        0 means the mf is freed from this function.
3562  */
3563 u8
3564 mpt3sas_check_for_pending_internal_cmds(struct MPT3SAS_ADAPTER *ioc, u16 smid)
3565 {
3566 	struct _sc_list *delayed_sc;
3567 	struct _event_ack_list *delayed_event_ack;
3568 
3569 	if (!list_empty(&ioc->delayed_event_ack_list)) {
3570 		delayed_event_ack = list_entry(ioc->delayed_event_ack_list.next,
3571 						struct _event_ack_list, list);
3572 		_scsih_issue_delayed_event_ack(ioc, smid,
3573 		  delayed_event_ack->Event, delayed_event_ack->EventContext);
3574 		list_del(&delayed_event_ack->list);
3575 		kfree(delayed_event_ack);
3576 		return 0;
3577 	}
3578 
3579 	if (!list_empty(&ioc->delayed_sc_list)) {
3580 		delayed_sc = list_entry(ioc->delayed_sc_list.next,
3581 						struct _sc_list, list);
3582 		_scsih_issue_delayed_sas_io_unit_ctrl(ioc, smid,
3583 						 delayed_sc->handle);
3584 		list_del(&delayed_sc->list);
3585 		kfree(delayed_sc);
3586 		return 0;
3587 	}
3588 	return 1;
3589 }
3590 
3591 /**
3592  * _scsih_check_for_pending_tm - check for pending task management
3593  * @ioc: per adapter object
3594  * @smid: system request message index
3595  *
3596  * This will check delayed target reset list, and feed the
3597  * next reqeust.
3598  *
3599  * Return 1 meaning mf should be freed from _base_interrupt
3600  *        0 means the mf is freed from this function.
3601  */
3602 static u8
3603 _scsih_check_for_pending_tm(struct MPT3SAS_ADAPTER *ioc, u16 smid)
3604 {
3605 	struct _tr_list *delayed_tr;
3606 
3607 	if (!list_empty(&ioc->delayed_tr_volume_list)) {
3608 		delayed_tr = list_entry(ioc->delayed_tr_volume_list.next,
3609 		    struct _tr_list, list);
3610 		mpt3sas_base_free_smid(ioc, smid);
3611 		_scsih_tm_tr_volume_send(ioc, delayed_tr->handle);
3612 		list_del(&delayed_tr->list);
3613 		kfree(delayed_tr);
3614 		return 0;
3615 	}
3616 
3617 	if (!list_empty(&ioc->delayed_tr_list)) {
3618 		delayed_tr = list_entry(ioc->delayed_tr_list.next,
3619 		    struct _tr_list, list);
3620 		mpt3sas_base_free_smid(ioc, smid);
3621 		_scsih_tm_tr_send(ioc, delayed_tr->handle);
3622 		list_del(&delayed_tr->list);
3623 		kfree(delayed_tr);
3624 		return 0;
3625 	}
3626 
3627 	return 1;
3628 }
3629 
3630 /**
3631  * _scsih_check_topo_delete_events - sanity check on topo events
3632  * @ioc: per adapter object
3633  * @event_data: the event data payload
3634  *
3635  * This routine added to better handle cable breaker.
3636  *
3637  * This handles the case where driver receives multiple expander
3638  * add and delete events in a single shot.  When there is a delete event
3639  * the routine will void any pending add events waiting in the event queue.
3640  *
3641  * Return nothing.
3642  */
3643 static void
3644 _scsih_check_topo_delete_events(struct MPT3SAS_ADAPTER *ioc,
3645 	Mpi2EventDataSasTopologyChangeList_t *event_data)
3646 {
3647 	struct fw_event_work *fw_event;
3648 	Mpi2EventDataSasTopologyChangeList_t *local_event_data;
3649 	u16 expander_handle;
3650 	struct _sas_node *sas_expander;
3651 	unsigned long flags;
3652 	int i, reason_code;
3653 	u16 handle;
3654 
3655 	for (i = 0 ; i < event_data->NumEntries; i++) {
3656 		handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
3657 		if (!handle)
3658 			continue;
3659 		reason_code = event_data->PHY[i].PhyStatus &
3660 		    MPI2_EVENT_SAS_TOPO_RC_MASK;
3661 		if (reason_code == MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING)
3662 			_scsih_tm_tr_send(ioc, handle);
3663 	}
3664 
3665 	expander_handle = le16_to_cpu(event_data->ExpanderDevHandle);
3666 	if (expander_handle < ioc->sas_hba.num_phys) {
3667 		_scsih_block_io_to_children_attached_directly(ioc, event_data);
3668 		return;
3669 	}
3670 	if (event_data->ExpStatus ==
3671 	    MPI2_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING) {
3672 		/* put expander attached devices into blocking state */
3673 		spin_lock_irqsave(&ioc->sas_node_lock, flags);
3674 		sas_expander = mpt3sas_scsih_expander_find_by_handle(ioc,
3675 		    expander_handle);
3676 		_scsih_block_io_to_children_attached_to_ex(ioc, sas_expander);
3677 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
3678 		do {
3679 			handle = find_first_bit(ioc->blocking_handles,
3680 			    ioc->facts.MaxDevHandle);
3681 			if (handle < ioc->facts.MaxDevHandle)
3682 				_scsih_block_io_device(ioc, handle);
3683 		} while (test_and_clear_bit(handle, ioc->blocking_handles));
3684 	} else if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_RESPONDING)
3685 		_scsih_block_io_to_children_attached_directly(ioc, event_data);
3686 
3687 	if (event_data->ExpStatus != MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING)
3688 		return;
3689 
3690 	/* mark ignore flag for pending events */
3691 	spin_lock_irqsave(&ioc->fw_event_lock, flags);
3692 	list_for_each_entry(fw_event, &ioc->fw_event_list, list) {
3693 		if (fw_event->event != MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST ||
3694 		    fw_event->ignore)
3695 			continue;
3696 		local_event_data = (Mpi2EventDataSasTopologyChangeList_t *)
3697 				   fw_event->event_data;
3698 		if (local_event_data->ExpStatus ==
3699 		    MPI2_EVENT_SAS_TOPO_ES_ADDED ||
3700 		    local_event_data->ExpStatus ==
3701 		    MPI2_EVENT_SAS_TOPO_ES_RESPONDING) {
3702 			if (le16_to_cpu(local_event_data->ExpanderDevHandle) ==
3703 			    expander_handle) {
3704 				dewtprintk(ioc, pr_info(MPT3SAS_FMT
3705 				    "setting ignoring flag\n", ioc->name));
3706 				fw_event->ignore = 1;
3707 			}
3708 		}
3709 	}
3710 	spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
3711 }
3712 
3713 /**
3714  * _scsih_set_volume_delete_flag - setting volume delete flag
3715  * @ioc: per adapter object
3716  * @handle: device handle
3717  *
3718  * This returns nothing.
3719  */
3720 static void
3721 _scsih_set_volume_delete_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3722 {
3723 	struct _raid_device *raid_device;
3724 	struct MPT3SAS_TARGET *sas_target_priv_data;
3725 	unsigned long flags;
3726 
3727 	spin_lock_irqsave(&ioc->raid_device_lock, flags);
3728 	raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
3729 	if (raid_device && raid_device->starget &&
3730 	    raid_device->starget->hostdata) {
3731 		sas_target_priv_data =
3732 		    raid_device->starget->hostdata;
3733 		sas_target_priv_data->deleted = 1;
3734 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3735 		    "setting delete flag: handle(0x%04x), "
3736 		    "wwid(0x%016llx)\n", ioc->name, handle,
3737 		    (unsigned long long) raid_device->wwid));
3738 	}
3739 	spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
3740 }
3741 
3742 /**
3743  * _scsih_set_volume_handle_for_tr - set handle for target reset to volume
3744  * @handle: input handle
3745  * @a: handle for volume a
3746  * @b: handle for volume b
3747  *
3748  * IR firmware only supports two raid volumes.  The purpose of this
3749  * routine is to set the volume handle in either a or b. When the given
3750  * input handle is non-zero, or when a and b have not been set before.
3751  */
3752 static void
3753 _scsih_set_volume_handle_for_tr(u16 handle, u16 *a, u16 *b)
3754 {
3755 	if (!handle || handle == *a || handle == *b)
3756 		return;
3757 	if (!*a)
3758 		*a = handle;
3759 	else if (!*b)
3760 		*b = handle;
3761 }
3762 
3763 /**
3764  * _scsih_check_ir_config_unhide_events - check for UNHIDE events
3765  * @ioc: per adapter object
3766  * @event_data: the event data payload
3767  * Context: interrupt time.
3768  *
3769  * This routine will send target reset to volume, followed by target
3770  * resets to the PDs. This is called when a PD has been removed, or
3771  * volume has been deleted or removed. When the target reset is sent
3772  * to volume, the PD target resets need to be queued to start upon
3773  * completion of the volume target reset.
3774  *
3775  * Return nothing.
3776  */
3777 static void
3778 _scsih_check_ir_config_unhide_events(struct MPT3SAS_ADAPTER *ioc,
3779 	Mpi2EventDataIrConfigChangeList_t *event_data)
3780 {
3781 	Mpi2EventIrConfigElement_t *element;
3782 	int i;
3783 	u16 handle, volume_handle, a, b;
3784 	struct _tr_list *delayed_tr;
3785 
3786 	a = 0;
3787 	b = 0;
3788 
3789 	if (ioc->is_warpdrive)
3790 		return;
3791 
3792 	/* Volume Resets for Deleted or Removed */
3793 	element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3794 	for (i = 0; i < event_data->NumElements; i++, element++) {
3795 		if (le32_to_cpu(event_data->Flags) &
3796 		    MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG)
3797 			continue;
3798 		if (element->ReasonCode ==
3799 		    MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED ||
3800 		    element->ReasonCode ==
3801 		    MPI2_EVENT_IR_CHANGE_RC_REMOVED) {
3802 			volume_handle = le16_to_cpu(element->VolDevHandle);
3803 			_scsih_set_volume_delete_flag(ioc, volume_handle);
3804 			_scsih_set_volume_handle_for_tr(volume_handle, &a, &b);
3805 		}
3806 	}
3807 
3808 	/* Volume Resets for UNHIDE events */
3809 	element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3810 	for (i = 0; i < event_data->NumElements; i++, element++) {
3811 		if (le32_to_cpu(event_data->Flags) &
3812 		    MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG)
3813 			continue;
3814 		if (element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_UNHIDE) {
3815 			volume_handle = le16_to_cpu(element->VolDevHandle);
3816 			_scsih_set_volume_handle_for_tr(volume_handle, &a, &b);
3817 		}
3818 	}
3819 
3820 	if (a)
3821 		_scsih_tm_tr_volume_send(ioc, a);
3822 	if (b)
3823 		_scsih_tm_tr_volume_send(ioc, b);
3824 
3825 	/* PD target resets */
3826 	element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3827 	for (i = 0; i < event_data->NumElements; i++, element++) {
3828 		if (element->ReasonCode != MPI2_EVENT_IR_CHANGE_RC_UNHIDE)
3829 			continue;
3830 		handle = le16_to_cpu(element->PhysDiskDevHandle);
3831 		volume_handle = le16_to_cpu(element->VolDevHandle);
3832 		clear_bit(handle, ioc->pd_handles);
3833 		if (!volume_handle)
3834 			_scsih_tm_tr_send(ioc, handle);
3835 		else if (volume_handle == a || volume_handle == b) {
3836 			delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3837 			BUG_ON(!delayed_tr);
3838 			INIT_LIST_HEAD(&delayed_tr->list);
3839 			delayed_tr->handle = handle;
3840 			list_add_tail(&delayed_tr->list, &ioc->delayed_tr_list);
3841 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
3842 			    "DELAYED:tr:handle(0x%04x), (open)\n", ioc->name,
3843 			    handle));
3844 		} else
3845 			_scsih_tm_tr_send(ioc, handle);
3846 	}
3847 }
3848 
3849 
3850 /**
3851  * _scsih_check_volume_delete_events - set delete flag for volumes
3852  * @ioc: per adapter object
3853  * @event_data: the event data payload
3854  * Context: interrupt time.
3855  *
3856  * This will handle the case when the cable connected to entire volume is
3857  * pulled. We will take care of setting the deleted flag so normal IO will
3858  * not be sent.
3859  *
3860  * Return nothing.
3861  */
3862 static void
3863 _scsih_check_volume_delete_events(struct MPT3SAS_ADAPTER *ioc,
3864 	Mpi2EventDataIrVolume_t *event_data)
3865 {
3866 	u32 state;
3867 
3868 	if (event_data->ReasonCode != MPI2_EVENT_IR_VOLUME_RC_STATE_CHANGED)
3869 		return;
3870 	state = le32_to_cpu(event_data->NewValue);
3871 	if (state == MPI2_RAID_VOL_STATE_MISSING || state ==
3872 	    MPI2_RAID_VOL_STATE_FAILED)
3873 		_scsih_set_volume_delete_flag(ioc,
3874 		    le16_to_cpu(event_data->VolDevHandle));
3875 }
3876 
3877 /**
3878  * _scsih_temp_threshold_events - display temperature threshold exceeded events
3879  * @ioc: per adapter object
3880  * @event_data: the temp threshold event data
3881  * Context: interrupt time.
3882  *
3883  * Return nothing.
3884  */
3885 static void
3886 _scsih_temp_threshold_events(struct MPT3SAS_ADAPTER *ioc,
3887 	Mpi2EventDataTemperature_t *event_data)
3888 {
3889 	if (ioc->temp_sensors_count >= event_data->SensorNum) {
3890 		pr_err(MPT3SAS_FMT "Temperature Threshold flags %s%s%s%s"
3891 		  " exceeded for Sensor: %d !!!\n", ioc->name,
3892 		  ((le16_to_cpu(event_data->Status) & 0x1) == 1) ? "0 " : " ",
3893 		  ((le16_to_cpu(event_data->Status) & 0x2) == 2) ? "1 " : " ",
3894 		  ((le16_to_cpu(event_data->Status) & 0x4) == 4) ? "2 " : " ",
3895 		  ((le16_to_cpu(event_data->Status) & 0x8) == 8) ? "3 " : " ",
3896 		  event_data->SensorNum);
3897 		pr_err(MPT3SAS_FMT "Current Temp In Celsius: %d\n",
3898 			ioc->name, event_data->CurrentTemperature);
3899 	}
3900 }
3901 
3902 static inline bool ata_12_16_cmd(struct scsi_cmnd *scmd)
3903 {
3904 	return (scmd->cmnd[0] == ATA_12 || scmd->cmnd[0] == ATA_16);
3905 }
3906 
3907 /**
3908  * _scsih_flush_running_cmds - completing outstanding commands.
3909  * @ioc: per adapter object
3910  *
3911  * The flushing out of all pending scmd commands following host reset,
3912  * where all IO is dropped to the floor.
3913  *
3914  * Return nothing.
3915  */
3916 static void
3917 _scsih_flush_running_cmds(struct MPT3SAS_ADAPTER *ioc)
3918 {
3919 	struct scsi_cmnd *scmd;
3920 	u16 smid;
3921 	u16 count = 0;
3922 
3923 	for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
3924 		scmd = _scsih_scsi_lookup_get_clear(ioc, smid);
3925 		if (!scmd)
3926 			continue;
3927 		count++;
3928 		if (ata_12_16_cmd(scmd))
3929 			scsi_internal_device_unblock(scmd->device,
3930 							SDEV_RUNNING);
3931 		mpt3sas_base_free_smid(ioc, smid);
3932 		scsi_dma_unmap(scmd);
3933 		if (ioc->pci_error_recovery)
3934 			scmd->result = DID_NO_CONNECT << 16;
3935 		else
3936 			scmd->result = DID_RESET << 16;
3937 		scmd->scsi_done(scmd);
3938 	}
3939 	dtmprintk(ioc, pr_info(MPT3SAS_FMT "completing %d cmds\n",
3940 	    ioc->name, count));
3941 }
3942 
3943 /**
3944  * _scsih_setup_eedp - setup MPI request for EEDP transfer
3945  * @ioc: per adapter object
3946  * @scmd: pointer to scsi command object
3947  * @mpi_request: pointer to the SCSI_IO request message frame
3948  *
3949  * Supporting protection 1 and 3.
3950  *
3951  * Returns nothing
3952  */
3953 static void
3954 _scsih_setup_eedp(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
3955 	Mpi2SCSIIORequest_t *mpi_request)
3956 {
3957 	u16 eedp_flags;
3958 	unsigned char prot_op = scsi_get_prot_op(scmd);
3959 	unsigned char prot_type = scsi_get_prot_type(scmd);
3960 	Mpi25SCSIIORequest_t *mpi_request_3v =
3961 	   (Mpi25SCSIIORequest_t *)mpi_request;
3962 
3963 	if (prot_type == SCSI_PROT_DIF_TYPE0 || prot_op == SCSI_PROT_NORMAL)
3964 		return;
3965 
3966 	if (prot_op ==  SCSI_PROT_READ_STRIP)
3967 		eedp_flags = MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP;
3968 	else if (prot_op ==  SCSI_PROT_WRITE_INSERT)
3969 		eedp_flags = MPI2_SCSIIO_EEDPFLAGS_INSERT_OP;
3970 	else
3971 		return;
3972 
3973 	switch (prot_type) {
3974 	case SCSI_PROT_DIF_TYPE1:
3975 	case SCSI_PROT_DIF_TYPE2:
3976 
3977 		/*
3978 		* enable ref/guard checking
3979 		* auto increment ref tag
3980 		*/
3981 		eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
3982 		    MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
3983 		    MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
3984 		mpi_request->CDB.EEDP32.PrimaryReferenceTag =
3985 		    cpu_to_be32(scsi_prot_ref_tag(scmd));
3986 		break;
3987 
3988 	case SCSI_PROT_DIF_TYPE3:
3989 
3990 		/*
3991 		* enable guard checking
3992 		*/
3993 		eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
3994 
3995 		break;
3996 	}
3997 
3998 	mpi_request_3v->EEDPBlockSize =
3999 	    cpu_to_le16(scmd->device->sector_size);
4000 
4001 	if (ioc->is_gen35_ioc)
4002 		eedp_flags |= MPI25_SCSIIO_EEDPFLAGS_APPTAG_DISABLE_MODE;
4003 	mpi_request->EEDPFlags = cpu_to_le16(eedp_flags);
4004 }
4005 
4006 /**
4007  * _scsih_eedp_error_handling - return sense code for EEDP errors
4008  * @scmd: pointer to scsi command object
4009  * @ioc_status: ioc status
4010  *
4011  * Returns nothing
4012  */
4013 static void
4014 _scsih_eedp_error_handling(struct scsi_cmnd *scmd, u16 ioc_status)
4015 {
4016 	u8 ascq;
4017 
4018 	switch (ioc_status) {
4019 	case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
4020 		ascq = 0x01;
4021 		break;
4022 	case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
4023 		ascq = 0x02;
4024 		break;
4025 	case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4026 		ascq = 0x03;
4027 		break;
4028 	default:
4029 		ascq = 0x00;
4030 		break;
4031 	}
4032 	scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, 0x10,
4033 	    ascq);
4034 	scmd->result = DRIVER_SENSE << 24 | (DID_ABORT << 16) |
4035 	    SAM_STAT_CHECK_CONDITION;
4036 }
4037 
4038 /**
4039  * scsih_qcmd - main scsi request entry point
4040  * @scmd: pointer to scsi command object
4041  * @done: function pointer to be invoked on completion
4042  *
4043  * The callback index is set inside `ioc->scsi_io_cb_idx`.
4044  *
4045  * Returns 0 on success.  If there's a failure, return either:
4046  * SCSI_MLQUEUE_DEVICE_BUSY if the device queue is full, or
4047  * SCSI_MLQUEUE_HOST_BUSY if the entire host queue is full
4048  */
4049 static int
4050 scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
4051 {
4052 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
4053 	struct MPT3SAS_DEVICE *sas_device_priv_data;
4054 	struct MPT3SAS_TARGET *sas_target_priv_data;
4055 	struct _raid_device *raid_device;
4056 	struct request *rq = scmd->request;
4057 	int class;
4058 	Mpi2SCSIIORequest_t *mpi_request;
4059 	u32 mpi_control;
4060 	u16 smid;
4061 	u16 handle;
4062 
4063 	if (ioc->logging_level & MPT_DEBUG_SCSI)
4064 		scsi_print_command(scmd);
4065 
4066 	/*
4067 	 * Lock the device for any subsequent command until command is
4068 	 * done.
4069 	 */
4070 	if (ata_12_16_cmd(scmd))
4071 		scsi_internal_device_block(scmd->device);
4072 
4073 	sas_device_priv_data = scmd->device->hostdata;
4074 	if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
4075 		scmd->result = DID_NO_CONNECT << 16;
4076 		scmd->scsi_done(scmd);
4077 		return 0;
4078 	}
4079 
4080 	if (ioc->pci_error_recovery || ioc->remove_host) {
4081 		scmd->result = DID_NO_CONNECT << 16;
4082 		scmd->scsi_done(scmd);
4083 		return 0;
4084 	}
4085 
4086 	sas_target_priv_data = sas_device_priv_data->sas_target;
4087 
4088 	/* invalid device handle */
4089 	handle = sas_target_priv_data->handle;
4090 	if (handle == MPT3SAS_INVALID_DEVICE_HANDLE) {
4091 		scmd->result = DID_NO_CONNECT << 16;
4092 		scmd->scsi_done(scmd);
4093 		return 0;
4094 	}
4095 
4096 
4097 	/* host recovery or link resets sent via IOCTLs */
4098 	if (ioc->shost_recovery || ioc->ioc_link_reset_in_progress)
4099 		return SCSI_MLQUEUE_HOST_BUSY;
4100 
4101 	/* device has been deleted */
4102 	else if (sas_target_priv_data->deleted) {
4103 		scmd->result = DID_NO_CONNECT << 16;
4104 		scmd->scsi_done(scmd);
4105 		return 0;
4106 	/* device busy with task management */
4107 	} else if (sas_target_priv_data->tm_busy ||
4108 	    sas_device_priv_data->block)
4109 		return SCSI_MLQUEUE_DEVICE_BUSY;
4110 
4111 	if (scmd->sc_data_direction == DMA_FROM_DEVICE)
4112 		mpi_control = MPI2_SCSIIO_CONTROL_READ;
4113 	else if (scmd->sc_data_direction == DMA_TO_DEVICE)
4114 		mpi_control = MPI2_SCSIIO_CONTROL_WRITE;
4115 	else
4116 		mpi_control = MPI2_SCSIIO_CONTROL_NODATATRANSFER;
4117 
4118 	/* set tags */
4119 	mpi_control |= MPI2_SCSIIO_CONTROL_SIMPLEQ;
4120 	/* NCQ Prio supported, make sure control indicated high priority */
4121 	if (sas_device_priv_data->ncq_prio_enable) {
4122 		class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq));
4123 		if (class == IOPRIO_CLASS_RT)
4124 			mpi_control |= 1 << MPI2_SCSIIO_CONTROL_CMDPRI_SHIFT;
4125 	}
4126 	/* Make sure Device is not raid volume.
4127 	 * We do not expose raid functionality to upper layer for warpdrive.
4128 	 */
4129 	if (!ioc->is_warpdrive && !scsih_is_raid(&scmd->device->sdev_gendev)
4130 	    && sas_is_tlr_enabled(scmd->device) && scmd->cmd_len != 32)
4131 		mpi_control |= MPI2_SCSIIO_CONTROL_TLR_ON;
4132 
4133 	smid = mpt3sas_base_get_smid_scsiio(ioc, ioc->scsi_io_cb_idx, scmd);
4134 	if (!smid) {
4135 		pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
4136 		    ioc->name, __func__);
4137 		goto out;
4138 	}
4139 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
4140 	memset(mpi_request, 0, sizeof(Mpi2SCSIIORequest_t));
4141 	_scsih_setup_eedp(ioc, scmd, mpi_request);
4142 
4143 	if (scmd->cmd_len == 32)
4144 		mpi_control |= 4 << MPI2_SCSIIO_CONTROL_ADDCDBLEN_SHIFT;
4145 	mpi_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
4146 	if (sas_device_priv_data->sas_target->flags &
4147 	    MPT_TARGET_FLAGS_RAID_COMPONENT)
4148 		mpi_request->Function = MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH;
4149 	else
4150 		mpi_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
4151 	mpi_request->DevHandle = cpu_to_le16(handle);
4152 	mpi_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
4153 	mpi_request->Control = cpu_to_le32(mpi_control);
4154 	mpi_request->IoFlags = cpu_to_le16(scmd->cmd_len);
4155 	mpi_request->MsgFlags = MPI2_SCSIIO_MSGFLAGS_SYSTEM_SENSE_ADDR;
4156 	mpi_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
4157 	mpi_request->SenseBufferLowAddress =
4158 	    mpt3sas_base_get_sense_buffer_dma(ioc, smid);
4159 	mpi_request->SGLOffset0 = offsetof(Mpi2SCSIIORequest_t, SGL) / 4;
4160 	int_to_scsilun(sas_device_priv_data->lun, (struct scsi_lun *)
4161 	    mpi_request->LUN);
4162 	memcpy(mpi_request->CDB.CDB32, scmd->cmnd, scmd->cmd_len);
4163 
4164 	if (mpi_request->DataLength) {
4165 		if (ioc->build_sg_scmd(ioc, scmd, smid)) {
4166 			mpt3sas_base_free_smid(ioc, smid);
4167 			goto out;
4168 		}
4169 	} else
4170 		ioc->build_zero_len_sge(ioc, &mpi_request->SGL);
4171 
4172 	raid_device = sas_target_priv_data->raid_device;
4173 	if (raid_device && raid_device->direct_io_enabled)
4174 		mpt3sas_setup_direct_io(ioc, scmd, raid_device, mpi_request,
4175 		    smid);
4176 
4177 	if (likely(mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)) {
4178 		if (sas_target_priv_data->flags & MPT_TARGET_FASTPATH_IO) {
4179 			mpi_request->IoFlags = cpu_to_le16(scmd->cmd_len |
4180 			    MPI25_SCSIIO_IOFLAGS_FAST_PATH);
4181 			ioc->put_smid_fast_path(ioc, smid, handle);
4182 		} else
4183 			ioc->put_smid_scsi_io(ioc, smid,
4184 			    le16_to_cpu(mpi_request->DevHandle));
4185 	} else
4186 		ioc->put_smid_default(ioc, smid);
4187 	return 0;
4188 
4189  out:
4190 	return SCSI_MLQUEUE_HOST_BUSY;
4191 }
4192 
4193 /**
4194  * _scsih_normalize_sense - normalize descriptor and fixed format sense data
4195  * @sense_buffer: sense data returned by target
4196  * @data: normalized skey/asc/ascq
4197  *
4198  * Return nothing.
4199  */
4200 static void
4201 _scsih_normalize_sense(char *sense_buffer, struct sense_info *data)
4202 {
4203 	if ((sense_buffer[0] & 0x7F) >= 0x72) {
4204 		/* descriptor format */
4205 		data->skey = sense_buffer[1] & 0x0F;
4206 		data->asc = sense_buffer[2];
4207 		data->ascq = sense_buffer[3];
4208 	} else {
4209 		/* fixed format */
4210 		data->skey = sense_buffer[2] & 0x0F;
4211 		data->asc = sense_buffer[12];
4212 		data->ascq = sense_buffer[13];
4213 	}
4214 }
4215 
4216 /**
4217  * _scsih_scsi_ioc_info - translated non-succesfull SCSI_IO request
4218  * @ioc: per adapter object
4219  * @scmd: pointer to scsi command object
4220  * @mpi_reply: reply mf payload returned from firmware
4221  *
4222  * scsi_status - SCSI Status code returned from target device
4223  * scsi_state - state info associated with SCSI_IO determined by ioc
4224  * ioc_status - ioc supplied status info
4225  *
4226  * Return nothing.
4227  */
4228 static void
4229 _scsih_scsi_ioc_info(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
4230 	Mpi2SCSIIOReply_t *mpi_reply, u16 smid)
4231 {
4232 	u32 response_info;
4233 	u8 *response_bytes;
4234 	u16 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) &
4235 	    MPI2_IOCSTATUS_MASK;
4236 	u8 scsi_state = mpi_reply->SCSIState;
4237 	u8 scsi_status = mpi_reply->SCSIStatus;
4238 	char *desc_ioc_state = NULL;
4239 	char *desc_scsi_status = NULL;
4240 	char *desc_scsi_state = ioc->tmp_string;
4241 	u32 log_info = le32_to_cpu(mpi_reply->IOCLogInfo);
4242 	struct _sas_device *sas_device = NULL;
4243 	struct scsi_target *starget = scmd->device->sdev_target;
4244 	struct MPT3SAS_TARGET *priv_target = starget->hostdata;
4245 	char *device_str = NULL;
4246 
4247 	if (!priv_target)
4248 		return;
4249 	if (ioc->hide_ir_msg)
4250 		device_str = "WarpDrive";
4251 	else
4252 		device_str = "volume";
4253 
4254 	if (log_info == 0x31170000)
4255 		return;
4256 
4257 	switch (ioc_status) {
4258 	case MPI2_IOCSTATUS_SUCCESS:
4259 		desc_ioc_state = "success";
4260 		break;
4261 	case MPI2_IOCSTATUS_INVALID_FUNCTION:
4262 		desc_ioc_state = "invalid function";
4263 		break;
4264 	case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
4265 		desc_ioc_state = "scsi recovered error";
4266 		break;
4267 	case MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE:
4268 		desc_ioc_state = "scsi invalid dev handle";
4269 		break;
4270 	case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
4271 		desc_ioc_state = "scsi device not there";
4272 		break;
4273 	case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
4274 		desc_ioc_state = "scsi data overrun";
4275 		break;
4276 	case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
4277 		desc_ioc_state = "scsi data underrun";
4278 		break;
4279 	case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
4280 		desc_ioc_state = "scsi io data error";
4281 		break;
4282 	case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
4283 		desc_ioc_state = "scsi protocol error";
4284 		break;
4285 	case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
4286 		desc_ioc_state = "scsi task terminated";
4287 		break;
4288 	case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
4289 		desc_ioc_state = "scsi residual mismatch";
4290 		break;
4291 	case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
4292 		desc_ioc_state = "scsi task mgmt failed";
4293 		break;
4294 	case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
4295 		desc_ioc_state = "scsi ioc terminated";
4296 		break;
4297 	case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
4298 		desc_ioc_state = "scsi ext terminated";
4299 		break;
4300 	case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
4301 		desc_ioc_state = "eedp guard error";
4302 		break;
4303 	case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4304 		desc_ioc_state = "eedp ref tag error";
4305 		break;
4306 	case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
4307 		desc_ioc_state = "eedp app tag error";
4308 		break;
4309 	case MPI2_IOCSTATUS_INSUFFICIENT_POWER:
4310 		desc_ioc_state = "insufficient power";
4311 		break;
4312 	default:
4313 		desc_ioc_state = "unknown";
4314 		break;
4315 	}
4316 
4317 	switch (scsi_status) {
4318 	case MPI2_SCSI_STATUS_GOOD:
4319 		desc_scsi_status = "good";
4320 		break;
4321 	case MPI2_SCSI_STATUS_CHECK_CONDITION:
4322 		desc_scsi_status = "check condition";
4323 		break;
4324 	case MPI2_SCSI_STATUS_CONDITION_MET:
4325 		desc_scsi_status = "condition met";
4326 		break;
4327 	case MPI2_SCSI_STATUS_BUSY:
4328 		desc_scsi_status = "busy";
4329 		break;
4330 	case MPI2_SCSI_STATUS_INTERMEDIATE:
4331 		desc_scsi_status = "intermediate";
4332 		break;
4333 	case MPI2_SCSI_STATUS_INTERMEDIATE_CONDMET:
4334 		desc_scsi_status = "intermediate condmet";
4335 		break;
4336 	case MPI2_SCSI_STATUS_RESERVATION_CONFLICT:
4337 		desc_scsi_status = "reservation conflict";
4338 		break;
4339 	case MPI2_SCSI_STATUS_COMMAND_TERMINATED:
4340 		desc_scsi_status = "command terminated";
4341 		break;
4342 	case MPI2_SCSI_STATUS_TASK_SET_FULL:
4343 		desc_scsi_status = "task set full";
4344 		break;
4345 	case MPI2_SCSI_STATUS_ACA_ACTIVE:
4346 		desc_scsi_status = "aca active";
4347 		break;
4348 	case MPI2_SCSI_STATUS_TASK_ABORTED:
4349 		desc_scsi_status = "task aborted";
4350 		break;
4351 	default:
4352 		desc_scsi_status = "unknown";
4353 		break;
4354 	}
4355 
4356 	desc_scsi_state[0] = '\0';
4357 	if (!scsi_state)
4358 		desc_scsi_state = " ";
4359 	if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID)
4360 		strcat(desc_scsi_state, "response info ");
4361 	if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4362 		strcat(desc_scsi_state, "state terminated ");
4363 	if (scsi_state & MPI2_SCSI_STATE_NO_SCSI_STATUS)
4364 		strcat(desc_scsi_state, "no status ");
4365 	if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_FAILED)
4366 		strcat(desc_scsi_state, "autosense failed ");
4367 	if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID)
4368 		strcat(desc_scsi_state, "autosense valid ");
4369 
4370 	scsi_print_command(scmd);
4371 
4372 	if (priv_target->flags & MPT_TARGET_FLAGS_VOLUME) {
4373 		pr_warn(MPT3SAS_FMT "\t%s wwid(0x%016llx)\n", ioc->name,
4374 		    device_str, (unsigned long long)priv_target->sas_address);
4375 	} else {
4376 		sas_device = mpt3sas_get_sdev_from_target(ioc, priv_target);
4377 		if (sas_device) {
4378 			pr_warn(MPT3SAS_FMT
4379 				"\tsas_address(0x%016llx), phy(%d)\n",
4380 				ioc->name, (unsigned long long)
4381 			    sas_device->sas_address, sas_device->phy);
4382 			if (sas_device->enclosure_handle != 0)
4383 				pr_warn(MPT3SAS_FMT
4384 				  "\tenclosure_logical_id(0x%016llx),"
4385 				  "slot(%d)\n", ioc->name,
4386 				  (unsigned long long)
4387 				  sas_device->enclosure_logical_id,
4388 				  sas_device->slot);
4389 			if (sas_device->connector_name[0])
4390 				pr_warn(MPT3SAS_FMT
4391 				  "\tenclosure level(0x%04x),"
4392 				  " connector name( %s)\n", ioc->name,
4393 				  sas_device->enclosure_level,
4394 				  sas_device->connector_name);
4395 
4396 			sas_device_put(sas_device);
4397 		}
4398 	}
4399 
4400 	pr_warn(MPT3SAS_FMT
4401 		"\thandle(0x%04x), ioc_status(%s)(0x%04x), smid(%d)\n",
4402 		ioc->name, le16_to_cpu(mpi_reply->DevHandle),
4403 	    desc_ioc_state, ioc_status, smid);
4404 	pr_warn(MPT3SAS_FMT
4405 		"\trequest_len(%d), underflow(%d), resid(%d)\n",
4406 		ioc->name, scsi_bufflen(scmd), scmd->underflow,
4407 	    scsi_get_resid(scmd));
4408 	pr_warn(MPT3SAS_FMT
4409 		"\ttag(%d), transfer_count(%d), sc->result(0x%08x)\n",
4410 		ioc->name, le16_to_cpu(mpi_reply->TaskTag),
4411 	    le32_to_cpu(mpi_reply->TransferCount), scmd->result);
4412 	pr_warn(MPT3SAS_FMT
4413 		"\tscsi_status(%s)(0x%02x), scsi_state(%s)(0x%02x)\n",
4414 		ioc->name, desc_scsi_status,
4415 	    scsi_status, desc_scsi_state, scsi_state);
4416 
4417 	if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID) {
4418 		struct sense_info data;
4419 		_scsih_normalize_sense(scmd->sense_buffer, &data);
4420 		pr_warn(MPT3SAS_FMT
4421 			"\t[sense_key,asc,ascq]: [0x%02x,0x%02x,0x%02x], count(%d)\n",
4422 			ioc->name, data.skey,
4423 		    data.asc, data.ascq, le32_to_cpu(mpi_reply->SenseCount));
4424 	}
4425 
4426 	if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID) {
4427 		response_info = le32_to_cpu(mpi_reply->ResponseInfo);
4428 		response_bytes = (u8 *)&response_info;
4429 		_scsih_response_code(ioc, response_bytes[0]);
4430 	}
4431 }
4432 
4433 /**
4434  * _scsih_turn_on_pfa_led - illuminate PFA LED
4435  * @ioc: per adapter object
4436  * @handle: device handle
4437  * Context: process
4438  *
4439  * Return nothing.
4440  */
4441 static void
4442 _scsih_turn_on_pfa_led(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4443 {
4444 	Mpi2SepReply_t mpi_reply;
4445 	Mpi2SepRequest_t mpi_request;
4446 	struct _sas_device *sas_device;
4447 
4448 	sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
4449 	if (!sas_device)
4450 		return;
4451 
4452 	memset(&mpi_request, 0, sizeof(Mpi2SepRequest_t));
4453 	mpi_request.Function = MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR;
4454 	mpi_request.Action = MPI2_SEP_REQ_ACTION_WRITE_STATUS;
4455 	mpi_request.SlotStatus =
4456 	    cpu_to_le32(MPI2_SEP_REQ_SLOTSTATUS_PREDICTED_FAULT);
4457 	mpi_request.DevHandle = cpu_to_le16(handle);
4458 	mpi_request.Flags = MPI2_SEP_REQ_FLAGS_DEVHANDLE_ADDRESS;
4459 	if ((mpt3sas_base_scsi_enclosure_processor(ioc, &mpi_reply,
4460 	    &mpi_request)) != 0) {
4461 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", ioc->name,
4462 		__FILE__, __LINE__, __func__);
4463 		goto out;
4464 	}
4465 	sas_device->pfa_led_on = 1;
4466 
4467 	if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo) {
4468 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
4469 			"enclosure_processor: ioc_status (0x%04x), loginfo(0x%08x)\n",
4470 			ioc->name, le16_to_cpu(mpi_reply.IOCStatus),
4471 		    le32_to_cpu(mpi_reply.IOCLogInfo)));
4472 		goto out;
4473 	}
4474 out:
4475 	sas_device_put(sas_device);
4476 }
4477 
4478 /**
4479  * _scsih_turn_off_pfa_led - turn off Fault LED
4480  * @ioc: per adapter object
4481  * @sas_device: sas device whose PFA LED has to turned off
4482  * Context: process
4483  *
4484  * Return nothing.
4485  */
4486 static void
4487 _scsih_turn_off_pfa_led(struct MPT3SAS_ADAPTER *ioc,
4488 	struct _sas_device *sas_device)
4489 {
4490 	Mpi2SepReply_t mpi_reply;
4491 	Mpi2SepRequest_t mpi_request;
4492 
4493 	memset(&mpi_request, 0, sizeof(Mpi2SepRequest_t));
4494 	mpi_request.Function = MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR;
4495 	mpi_request.Action = MPI2_SEP_REQ_ACTION_WRITE_STATUS;
4496 	mpi_request.SlotStatus = 0;
4497 	mpi_request.Slot = cpu_to_le16(sas_device->slot);
4498 	mpi_request.DevHandle = 0;
4499 	mpi_request.EnclosureHandle = cpu_to_le16(sas_device->enclosure_handle);
4500 	mpi_request.Flags = MPI2_SEP_REQ_FLAGS_ENCLOSURE_SLOT_ADDRESS;
4501 	if ((mpt3sas_base_scsi_enclosure_processor(ioc, &mpi_reply,
4502 		&mpi_request)) != 0) {
4503 		printk(MPT3SAS_FMT "failure at %s:%d/%s()!\n", ioc->name,
4504 		__FILE__, __LINE__, __func__);
4505 		return;
4506 	}
4507 
4508 	if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo) {
4509 		dewtprintk(ioc, printk(MPT3SAS_FMT
4510 		 "enclosure_processor: ioc_status (0x%04x), loginfo(0x%08x)\n",
4511 		 ioc->name, le16_to_cpu(mpi_reply.IOCStatus),
4512 		 le32_to_cpu(mpi_reply.IOCLogInfo)));
4513 		return;
4514 	}
4515 }
4516 
4517 /**
4518  * _scsih_send_event_to_turn_on_pfa_led - fire delayed event
4519  * @ioc: per adapter object
4520  * @handle: device handle
4521  * Context: interrupt.
4522  *
4523  * Return nothing.
4524  */
4525 static void
4526 _scsih_send_event_to_turn_on_pfa_led(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4527 {
4528 	struct fw_event_work *fw_event;
4529 
4530 	fw_event = alloc_fw_event_work(0);
4531 	if (!fw_event)
4532 		return;
4533 	fw_event->event = MPT3SAS_TURN_ON_PFA_LED;
4534 	fw_event->device_handle = handle;
4535 	fw_event->ioc = ioc;
4536 	_scsih_fw_event_add(ioc, fw_event);
4537 	fw_event_work_put(fw_event);
4538 }
4539 
4540 /**
4541  * _scsih_smart_predicted_fault - process smart errors
4542  * @ioc: per adapter object
4543  * @handle: device handle
4544  * Context: interrupt.
4545  *
4546  * Return nothing.
4547  */
4548 static void
4549 _scsih_smart_predicted_fault(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4550 {
4551 	struct scsi_target *starget;
4552 	struct MPT3SAS_TARGET *sas_target_priv_data;
4553 	Mpi2EventNotificationReply_t *event_reply;
4554 	Mpi2EventDataSasDeviceStatusChange_t *event_data;
4555 	struct _sas_device *sas_device;
4556 	ssize_t sz;
4557 	unsigned long flags;
4558 
4559 	/* only handle non-raid devices */
4560 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
4561 	sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
4562 	if (!sas_device)
4563 		goto out_unlock;
4564 
4565 	starget = sas_device->starget;
4566 	sas_target_priv_data = starget->hostdata;
4567 
4568 	if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) ||
4569 	   ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)))
4570 		goto out_unlock;
4571 
4572 	if (sas_device->enclosure_handle != 0)
4573 		starget_printk(KERN_INFO, starget, "predicted fault, "
4574 			"enclosure logical id(0x%016llx), slot(%d)\n",
4575 			(unsigned long long)sas_device->enclosure_logical_id,
4576 			sas_device->slot);
4577 	if (sas_device->connector_name[0] != '\0')
4578 		starget_printk(KERN_WARNING, starget, "predicted fault, "
4579 			"enclosure level(0x%04x), connector name( %s)\n",
4580 			sas_device->enclosure_level,
4581 			sas_device->connector_name);
4582 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
4583 
4584 	if (ioc->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM)
4585 		_scsih_send_event_to_turn_on_pfa_led(ioc, handle);
4586 
4587 	/* insert into event log */
4588 	sz = offsetof(Mpi2EventNotificationReply_t, EventData) +
4589 	     sizeof(Mpi2EventDataSasDeviceStatusChange_t);
4590 	event_reply = kzalloc(sz, GFP_KERNEL);
4591 	if (!event_reply) {
4592 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4593 		    ioc->name, __FILE__, __LINE__, __func__);
4594 		goto out;
4595 	}
4596 
4597 	event_reply->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
4598 	event_reply->Event =
4599 	    cpu_to_le16(MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
4600 	event_reply->MsgLength = sz/4;
4601 	event_reply->EventDataLength =
4602 	    cpu_to_le16(sizeof(Mpi2EventDataSasDeviceStatusChange_t)/4);
4603 	event_data = (Mpi2EventDataSasDeviceStatusChange_t *)
4604 	    event_reply->EventData;
4605 	event_data->ReasonCode = MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA;
4606 	event_data->ASC = 0x5D;
4607 	event_data->DevHandle = cpu_to_le16(handle);
4608 	event_data->SASAddress = cpu_to_le64(sas_target_priv_data->sas_address);
4609 	mpt3sas_ctl_add_to_event_log(ioc, event_reply);
4610 	kfree(event_reply);
4611 out:
4612 	if (sas_device)
4613 		sas_device_put(sas_device);
4614 	return;
4615 
4616 out_unlock:
4617 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
4618 	goto out;
4619 }
4620 
4621 /**
4622  * _scsih_io_done - scsi request callback
4623  * @ioc: per adapter object
4624  * @smid: system request message index
4625  * @msix_index: MSIX table index supplied by the OS
4626  * @reply: reply message frame(lower 32bit addr)
4627  *
4628  * Callback handler when using _scsih_qcmd.
4629  *
4630  * Return 1 meaning mf should be freed from _base_interrupt
4631  *        0 means the mf is freed from this function.
4632  */
4633 static u8
4634 _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
4635 {
4636 	Mpi2SCSIIORequest_t *mpi_request;
4637 	Mpi2SCSIIOReply_t *mpi_reply;
4638 	struct scsi_cmnd *scmd;
4639 	u16 ioc_status;
4640 	u32 xfer_cnt;
4641 	u8 scsi_state;
4642 	u8 scsi_status;
4643 	u32 log_info;
4644 	struct MPT3SAS_DEVICE *sas_device_priv_data;
4645 	u32 response_code = 0;
4646 	unsigned long flags;
4647 
4648 	mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
4649 	scmd = _scsih_scsi_lookup_get_clear(ioc, smid);
4650 	if (scmd == NULL)
4651 		return 1;
4652 
4653 	if (ata_12_16_cmd(scmd))
4654 		scsi_internal_device_unblock(scmd->device, SDEV_RUNNING);
4655 
4656 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
4657 
4658 	if (mpi_reply == NULL) {
4659 		scmd->result = DID_OK << 16;
4660 		goto out;
4661 	}
4662 
4663 	sas_device_priv_data = scmd->device->hostdata;
4664 	if (!sas_device_priv_data || !sas_device_priv_data->sas_target ||
4665 	     sas_device_priv_data->sas_target->deleted) {
4666 		scmd->result = DID_NO_CONNECT << 16;
4667 		goto out;
4668 	}
4669 	ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
4670 
4671 	/*
4672 	 * WARPDRIVE: If direct_io is set then it is directIO,
4673 	 * the failed direct I/O should be redirected to volume
4674 	 */
4675 	if (mpt3sas_scsi_direct_io_get(ioc, smid) &&
4676 	     ((ioc_status & MPI2_IOCSTATUS_MASK)
4677 	      != MPI2_IOCSTATUS_SCSI_TASK_TERMINATED)) {
4678 		spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4679 		ioc->scsi_lookup[smid - 1].scmd = scmd;
4680 		spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4681 		mpt3sas_scsi_direct_io_set(ioc, smid, 0);
4682 		memcpy(mpi_request->CDB.CDB32, scmd->cmnd, scmd->cmd_len);
4683 		mpi_request->DevHandle =
4684 		    cpu_to_le16(sas_device_priv_data->sas_target->handle);
4685 		ioc->put_smid_scsi_io(ioc, smid,
4686 		    sas_device_priv_data->sas_target->handle);
4687 		return 0;
4688 	}
4689 	/* turning off TLR */
4690 	scsi_state = mpi_reply->SCSIState;
4691 	if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID)
4692 		response_code =
4693 		    le32_to_cpu(mpi_reply->ResponseInfo) & 0xFF;
4694 	if (!sas_device_priv_data->tlr_snoop_check) {
4695 		sas_device_priv_data->tlr_snoop_check++;
4696 		if (!ioc->is_warpdrive &&
4697 		    !scsih_is_raid(&scmd->device->sdev_gendev) &&
4698 		    sas_is_tlr_enabled(scmd->device) &&
4699 		    response_code == MPI2_SCSITASKMGMT_RSP_INVALID_FRAME) {
4700 			sas_disable_tlr(scmd->device);
4701 			sdev_printk(KERN_INFO, scmd->device, "TLR disabled\n");
4702 		}
4703 	}
4704 
4705 	xfer_cnt = le32_to_cpu(mpi_reply->TransferCount);
4706 	scsi_set_resid(scmd, scsi_bufflen(scmd) - xfer_cnt);
4707 	if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
4708 		log_info =  le32_to_cpu(mpi_reply->IOCLogInfo);
4709 	else
4710 		log_info = 0;
4711 	ioc_status &= MPI2_IOCSTATUS_MASK;
4712 	scsi_status = mpi_reply->SCSIStatus;
4713 
4714 	if (ioc_status == MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN && xfer_cnt == 0 &&
4715 	    (scsi_status == MPI2_SCSI_STATUS_BUSY ||
4716 	     scsi_status == MPI2_SCSI_STATUS_RESERVATION_CONFLICT ||
4717 	     scsi_status == MPI2_SCSI_STATUS_TASK_SET_FULL)) {
4718 		ioc_status = MPI2_IOCSTATUS_SUCCESS;
4719 	}
4720 
4721 	if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID) {
4722 		struct sense_info data;
4723 		const void *sense_data = mpt3sas_base_get_sense_buffer(ioc,
4724 		    smid);
4725 		u32 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE,
4726 		    le32_to_cpu(mpi_reply->SenseCount));
4727 		memcpy(scmd->sense_buffer, sense_data, sz);
4728 		_scsih_normalize_sense(scmd->sense_buffer, &data);
4729 		/* failure prediction threshold exceeded */
4730 		if (data.asc == 0x5D)
4731 			_scsih_smart_predicted_fault(ioc,
4732 			    le16_to_cpu(mpi_reply->DevHandle));
4733 		mpt3sas_trigger_scsi(ioc, data.skey, data.asc, data.ascq);
4734 
4735 		if ((ioc->logging_level & MPT_DEBUG_REPLY) &&
4736 		     ((scmd->sense_buffer[2] == UNIT_ATTENTION) ||
4737 		     (scmd->sense_buffer[2] == MEDIUM_ERROR) ||
4738 		     (scmd->sense_buffer[2] == HARDWARE_ERROR)))
4739 			_scsih_scsi_ioc_info(ioc, scmd, mpi_reply, smid);
4740 	}
4741 	switch (ioc_status) {
4742 	case MPI2_IOCSTATUS_BUSY:
4743 	case MPI2_IOCSTATUS_INSUFFICIENT_RESOURCES:
4744 		scmd->result = SAM_STAT_BUSY;
4745 		break;
4746 
4747 	case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
4748 		scmd->result = DID_NO_CONNECT << 16;
4749 		break;
4750 
4751 	case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
4752 		if (sas_device_priv_data->block) {
4753 			scmd->result = DID_TRANSPORT_DISRUPTED << 16;
4754 			goto out;
4755 		}
4756 		if (log_info == 0x31110630) {
4757 			if (scmd->retries > 2) {
4758 				scmd->result = DID_NO_CONNECT << 16;
4759 				scsi_device_set_state(scmd->device,
4760 				    SDEV_OFFLINE);
4761 			} else {
4762 				scmd->result = DID_SOFT_ERROR << 16;
4763 				scmd->device->expecting_cc_ua = 1;
4764 			}
4765 			break;
4766 		} else if (log_info == VIRTUAL_IO_FAILED_RETRY) {
4767 			scmd->result = DID_RESET << 16;
4768 			break;
4769 		}
4770 		scmd->result = DID_SOFT_ERROR << 16;
4771 		break;
4772 	case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
4773 	case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
4774 		scmd->result = DID_RESET << 16;
4775 		break;
4776 
4777 	case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
4778 		if ((xfer_cnt == 0) || (scmd->underflow > xfer_cnt))
4779 			scmd->result = DID_SOFT_ERROR << 16;
4780 		else
4781 			scmd->result = (DID_OK << 16) | scsi_status;
4782 		break;
4783 
4784 	case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
4785 		scmd->result = (DID_OK << 16) | scsi_status;
4786 
4787 		if ((scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID))
4788 			break;
4789 
4790 		if (xfer_cnt < scmd->underflow) {
4791 			if (scsi_status == SAM_STAT_BUSY)
4792 				scmd->result = SAM_STAT_BUSY;
4793 			else
4794 				scmd->result = DID_SOFT_ERROR << 16;
4795 		} else if (scsi_state & (MPI2_SCSI_STATE_AUTOSENSE_FAILED |
4796 		     MPI2_SCSI_STATE_NO_SCSI_STATUS))
4797 			scmd->result = DID_SOFT_ERROR << 16;
4798 		else if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4799 			scmd->result = DID_RESET << 16;
4800 		else if (!xfer_cnt && scmd->cmnd[0] == REPORT_LUNS) {
4801 			mpi_reply->SCSIState = MPI2_SCSI_STATE_AUTOSENSE_VALID;
4802 			mpi_reply->SCSIStatus = SAM_STAT_CHECK_CONDITION;
4803 			scmd->result = (DRIVER_SENSE << 24) |
4804 			    SAM_STAT_CHECK_CONDITION;
4805 			scmd->sense_buffer[0] = 0x70;
4806 			scmd->sense_buffer[2] = ILLEGAL_REQUEST;
4807 			scmd->sense_buffer[12] = 0x20;
4808 			scmd->sense_buffer[13] = 0;
4809 		}
4810 		break;
4811 
4812 	case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
4813 		scsi_set_resid(scmd, 0);
4814 	case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
4815 	case MPI2_IOCSTATUS_SUCCESS:
4816 		scmd->result = (DID_OK << 16) | scsi_status;
4817 		if (response_code ==
4818 		    MPI2_SCSITASKMGMT_RSP_INVALID_FRAME ||
4819 		    (scsi_state & (MPI2_SCSI_STATE_AUTOSENSE_FAILED |
4820 		     MPI2_SCSI_STATE_NO_SCSI_STATUS)))
4821 			scmd->result = DID_SOFT_ERROR << 16;
4822 		else if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4823 			scmd->result = DID_RESET << 16;
4824 		break;
4825 
4826 	case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
4827 	case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4828 	case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
4829 		_scsih_eedp_error_handling(scmd, ioc_status);
4830 		break;
4831 
4832 	case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
4833 	case MPI2_IOCSTATUS_INVALID_FUNCTION:
4834 	case MPI2_IOCSTATUS_INVALID_SGL:
4835 	case MPI2_IOCSTATUS_INTERNAL_ERROR:
4836 	case MPI2_IOCSTATUS_INVALID_FIELD:
4837 	case MPI2_IOCSTATUS_INVALID_STATE:
4838 	case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
4839 	case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
4840 	case MPI2_IOCSTATUS_INSUFFICIENT_POWER:
4841 	default:
4842 		scmd->result = DID_SOFT_ERROR << 16;
4843 		break;
4844 
4845 	}
4846 
4847 	if (scmd->result && (ioc->logging_level & MPT_DEBUG_REPLY))
4848 		_scsih_scsi_ioc_info(ioc , scmd, mpi_reply, smid);
4849 
4850  out:
4851 
4852 	scsi_dma_unmap(scmd);
4853 
4854 	scmd->scsi_done(scmd);
4855 	return 1;
4856 }
4857 
4858 /**
4859  * _scsih_sas_host_refresh - refreshing sas host object contents
4860  * @ioc: per adapter object
4861  * Context: user
4862  *
4863  * During port enable, fw will send topology events for every device. Its
4864  * possible that the handles may change from the previous setting, so this
4865  * code keeping handles updating if changed.
4866  *
4867  * Return nothing.
4868  */
4869 static void
4870 _scsih_sas_host_refresh(struct MPT3SAS_ADAPTER *ioc)
4871 {
4872 	u16 sz;
4873 	u16 ioc_status;
4874 	int i;
4875 	Mpi2ConfigReply_t mpi_reply;
4876 	Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
4877 	u16 attached_handle;
4878 	u8 link_rate;
4879 
4880 	dtmprintk(ioc, pr_info(MPT3SAS_FMT
4881 	    "updating handles for sas_host(0x%016llx)\n",
4882 	    ioc->name, (unsigned long long)ioc->sas_hba.sas_address));
4883 
4884 	sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys
4885 	    * sizeof(Mpi2SasIOUnit0PhyData_t));
4886 	sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
4887 	if (!sas_iounit_pg0) {
4888 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4889 		    ioc->name, __FILE__, __LINE__, __func__);
4890 		return;
4891 	}
4892 
4893 	if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
4894 	    sas_iounit_pg0, sz)) != 0)
4895 		goto out;
4896 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
4897 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
4898 		goto out;
4899 	for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
4900 		link_rate = sas_iounit_pg0->PhyData[i].NegotiatedLinkRate >> 4;
4901 		if (i == 0)
4902 			ioc->sas_hba.handle = le16_to_cpu(sas_iounit_pg0->
4903 			    PhyData[0].ControllerDevHandle);
4904 		ioc->sas_hba.phy[i].handle = ioc->sas_hba.handle;
4905 		attached_handle = le16_to_cpu(sas_iounit_pg0->PhyData[i].
4906 		    AttachedDevHandle);
4907 		if (attached_handle && link_rate < MPI2_SAS_NEG_LINK_RATE_1_5)
4908 			link_rate = MPI2_SAS_NEG_LINK_RATE_1_5;
4909 		mpt3sas_transport_update_links(ioc, ioc->sas_hba.sas_address,
4910 		    attached_handle, i, link_rate);
4911 	}
4912  out:
4913 	kfree(sas_iounit_pg0);
4914 }
4915 
4916 /**
4917  * _scsih_sas_host_add - create sas host object
4918  * @ioc: per adapter object
4919  *
4920  * Creating host side data object, stored in ioc->sas_hba
4921  *
4922  * Return nothing.
4923  */
4924 static void
4925 _scsih_sas_host_add(struct MPT3SAS_ADAPTER *ioc)
4926 {
4927 	int i;
4928 	Mpi2ConfigReply_t mpi_reply;
4929 	Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
4930 	Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
4931 	Mpi2SasPhyPage0_t phy_pg0;
4932 	Mpi2SasDevicePage0_t sas_device_pg0;
4933 	Mpi2SasEnclosurePage0_t enclosure_pg0;
4934 	u16 ioc_status;
4935 	u16 sz;
4936 	u8 device_missing_delay;
4937 	u8 num_phys;
4938 
4939 	mpt3sas_config_get_number_hba_phys(ioc, &num_phys);
4940 	if (!num_phys) {
4941 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4942 		    ioc->name, __FILE__, __LINE__, __func__);
4943 		return;
4944 	}
4945 	ioc->sas_hba.phy = kcalloc(num_phys,
4946 	    sizeof(struct _sas_phy), GFP_KERNEL);
4947 	if (!ioc->sas_hba.phy) {
4948 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4949 		    ioc->name, __FILE__, __LINE__, __func__);
4950 		goto out;
4951 	}
4952 	ioc->sas_hba.num_phys = num_phys;
4953 
4954 	/* sas_iounit page 0 */
4955 	sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys *
4956 	    sizeof(Mpi2SasIOUnit0PhyData_t));
4957 	sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
4958 	if (!sas_iounit_pg0) {
4959 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4960 		    ioc->name, __FILE__, __LINE__, __func__);
4961 		return;
4962 	}
4963 	if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
4964 	    sas_iounit_pg0, sz))) {
4965 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4966 		    ioc->name, __FILE__, __LINE__, __func__);
4967 		goto out;
4968 	}
4969 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
4970 	    MPI2_IOCSTATUS_MASK;
4971 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
4972 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4973 		    ioc->name, __FILE__, __LINE__, __func__);
4974 		goto out;
4975 	}
4976 
4977 	/* sas_iounit page 1 */
4978 	sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
4979 	    sizeof(Mpi2SasIOUnit1PhyData_t));
4980 	sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
4981 	if (!sas_iounit_pg1) {
4982 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4983 		    ioc->name, __FILE__, __LINE__, __func__);
4984 		goto out;
4985 	}
4986 	if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
4987 	    sas_iounit_pg1, sz))) {
4988 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4989 		    ioc->name, __FILE__, __LINE__, __func__);
4990 		goto out;
4991 	}
4992 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
4993 	    MPI2_IOCSTATUS_MASK;
4994 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
4995 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4996 		    ioc->name, __FILE__, __LINE__, __func__);
4997 		goto out;
4998 	}
4999 
5000 	ioc->io_missing_delay =
5001 	    sas_iounit_pg1->IODeviceMissingDelay;
5002 	device_missing_delay =
5003 	    sas_iounit_pg1->ReportDeviceMissingDelay;
5004 	if (device_missing_delay & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
5005 		ioc->device_missing_delay = (device_missing_delay &
5006 		    MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
5007 	else
5008 		ioc->device_missing_delay = device_missing_delay &
5009 		    MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
5010 
5011 	ioc->sas_hba.parent_dev = &ioc->shost->shost_gendev;
5012 	for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
5013 		if ((mpt3sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
5014 		    i))) {
5015 			pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5016 			    ioc->name, __FILE__, __LINE__, __func__);
5017 			goto out;
5018 		}
5019 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5020 		    MPI2_IOCSTATUS_MASK;
5021 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5022 			pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5023 			    ioc->name, __FILE__, __LINE__, __func__);
5024 			goto out;
5025 		}
5026 
5027 		if (i == 0)
5028 			ioc->sas_hba.handle = le16_to_cpu(sas_iounit_pg0->
5029 			    PhyData[0].ControllerDevHandle);
5030 		ioc->sas_hba.phy[i].handle = ioc->sas_hba.handle;
5031 		ioc->sas_hba.phy[i].phy_id = i;
5032 		mpt3sas_transport_add_host_phy(ioc, &ioc->sas_hba.phy[i],
5033 		    phy_pg0, ioc->sas_hba.parent_dev);
5034 	}
5035 	if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
5036 	    MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, ioc->sas_hba.handle))) {
5037 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5038 		    ioc->name, __FILE__, __LINE__, __func__);
5039 		goto out;
5040 	}
5041 	ioc->sas_hba.enclosure_handle =
5042 	    le16_to_cpu(sas_device_pg0.EnclosureHandle);
5043 	ioc->sas_hba.sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5044 	pr_info(MPT3SAS_FMT
5045 		"host_add: handle(0x%04x), sas_addr(0x%016llx), phys(%d)\n",
5046 		ioc->name, ioc->sas_hba.handle,
5047 	    (unsigned long long) ioc->sas_hba.sas_address,
5048 	    ioc->sas_hba.num_phys) ;
5049 
5050 	if (ioc->sas_hba.enclosure_handle) {
5051 		if (!(mpt3sas_config_get_enclosure_pg0(ioc, &mpi_reply,
5052 		    &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5053 		   ioc->sas_hba.enclosure_handle)))
5054 			ioc->sas_hba.enclosure_logical_id =
5055 			    le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5056 	}
5057 
5058  out:
5059 	kfree(sas_iounit_pg1);
5060 	kfree(sas_iounit_pg0);
5061 }
5062 
5063 /**
5064  * _scsih_expander_add -  creating expander object
5065  * @ioc: per adapter object
5066  * @handle: expander handle
5067  *
5068  * Creating expander object, stored in ioc->sas_expander_list.
5069  *
5070  * Return 0 for success, else error.
5071  */
5072 static int
5073 _scsih_expander_add(struct MPT3SAS_ADAPTER *ioc, u16 handle)
5074 {
5075 	struct _sas_node *sas_expander;
5076 	Mpi2ConfigReply_t mpi_reply;
5077 	Mpi2ExpanderPage0_t expander_pg0;
5078 	Mpi2ExpanderPage1_t expander_pg1;
5079 	Mpi2SasEnclosurePage0_t enclosure_pg0;
5080 	u32 ioc_status;
5081 	u16 parent_handle;
5082 	u64 sas_address, sas_address_parent = 0;
5083 	int i;
5084 	unsigned long flags;
5085 	struct _sas_port *mpt3sas_port = NULL;
5086 
5087 	int rc = 0;
5088 
5089 	if (!handle)
5090 		return -1;
5091 
5092 	if (ioc->shost_recovery || ioc->pci_error_recovery)
5093 		return -1;
5094 
5095 	if ((mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
5096 	    MPI2_SAS_EXPAND_PGAD_FORM_HNDL, handle))) {
5097 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5098 		    ioc->name, __FILE__, __LINE__, __func__);
5099 		return -1;
5100 	}
5101 
5102 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5103 	    MPI2_IOCSTATUS_MASK;
5104 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5105 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5106 		    ioc->name, __FILE__, __LINE__, __func__);
5107 		return -1;
5108 	}
5109 
5110 	/* handle out of order topology events */
5111 	parent_handle = le16_to_cpu(expander_pg0.ParentDevHandle);
5112 	if (_scsih_get_sas_address(ioc, parent_handle, &sas_address_parent)
5113 	    != 0) {
5114 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5115 		    ioc->name, __FILE__, __LINE__, __func__);
5116 		return -1;
5117 	}
5118 	if (sas_address_parent != ioc->sas_hba.sas_address) {
5119 		spin_lock_irqsave(&ioc->sas_node_lock, flags);
5120 		sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5121 		    sas_address_parent);
5122 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5123 		if (!sas_expander) {
5124 			rc = _scsih_expander_add(ioc, parent_handle);
5125 			if (rc != 0)
5126 				return rc;
5127 		}
5128 	}
5129 
5130 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
5131 	sas_address = le64_to_cpu(expander_pg0.SASAddress);
5132 	sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5133 	    sas_address);
5134 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5135 
5136 	if (sas_expander)
5137 		return 0;
5138 
5139 	sas_expander = kzalloc(sizeof(struct _sas_node),
5140 	    GFP_KERNEL);
5141 	if (!sas_expander) {
5142 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5143 		    ioc->name, __FILE__, __LINE__, __func__);
5144 		return -1;
5145 	}
5146 
5147 	sas_expander->handle = handle;
5148 	sas_expander->num_phys = expander_pg0.NumPhys;
5149 	sas_expander->sas_address_parent = sas_address_parent;
5150 	sas_expander->sas_address = sas_address;
5151 
5152 	pr_info(MPT3SAS_FMT "expander_add: handle(0x%04x)," \
5153 	    " parent(0x%04x), sas_addr(0x%016llx), phys(%d)\n", ioc->name,
5154 	    handle, parent_handle, (unsigned long long)
5155 	    sas_expander->sas_address, sas_expander->num_phys);
5156 
5157 	if (!sas_expander->num_phys)
5158 		goto out_fail;
5159 	sas_expander->phy = kcalloc(sas_expander->num_phys,
5160 	    sizeof(struct _sas_phy), GFP_KERNEL);
5161 	if (!sas_expander->phy) {
5162 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5163 		    ioc->name, __FILE__, __LINE__, __func__);
5164 		rc = -1;
5165 		goto out_fail;
5166 	}
5167 
5168 	INIT_LIST_HEAD(&sas_expander->sas_port_list);
5169 	mpt3sas_port = mpt3sas_transport_port_add(ioc, handle,
5170 	    sas_address_parent);
5171 	if (!mpt3sas_port) {
5172 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5173 		    ioc->name, __FILE__, __LINE__, __func__);
5174 		rc = -1;
5175 		goto out_fail;
5176 	}
5177 	sas_expander->parent_dev = &mpt3sas_port->rphy->dev;
5178 
5179 	for (i = 0 ; i < sas_expander->num_phys ; i++) {
5180 		if ((mpt3sas_config_get_expander_pg1(ioc, &mpi_reply,
5181 		    &expander_pg1, i, handle))) {
5182 			pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5183 			    ioc->name, __FILE__, __LINE__, __func__);
5184 			rc = -1;
5185 			goto out_fail;
5186 		}
5187 		sas_expander->phy[i].handle = handle;
5188 		sas_expander->phy[i].phy_id = i;
5189 
5190 		if ((mpt3sas_transport_add_expander_phy(ioc,
5191 		    &sas_expander->phy[i], expander_pg1,
5192 		    sas_expander->parent_dev))) {
5193 			pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5194 			    ioc->name, __FILE__, __LINE__, __func__);
5195 			rc = -1;
5196 			goto out_fail;
5197 		}
5198 	}
5199 
5200 	if (sas_expander->enclosure_handle) {
5201 		if (!(mpt3sas_config_get_enclosure_pg0(ioc, &mpi_reply,
5202 		    &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5203 		   sas_expander->enclosure_handle)))
5204 			sas_expander->enclosure_logical_id =
5205 			    le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5206 	}
5207 
5208 	_scsih_expander_node_add(ioc, sas_expander);
5209 	 return 0;
5210 
5211  out_fail:
5212 
5213 	if (mpt3sas_port)
5214 		mpt3sas_transport_port_remove(ioc, sas_expander->sas_address,
5215 		    sas_address_parent);
5216 	kfree(sas_expander);
5217 	return rc;
5218 }
5219 
5220 /**
5221  * mpt3sas_expander_remove - removing expander object
5222  * @ioc: per adapter object
5223  * @sas_address: expander sas_address
5224  *
5225  * Return nothing.
5226  */
5227 void
5228 mpt3sas_expander_remove(struct MPT3SAS_ADAPTER *ioc, u64 sas_address)
5229 {
5230 	struct _sas_node *sas_expander;
5231 	unsigned long flags;
5232 
5233 	if (ioc->shost_recovery)
5234 		return;
5235 
5236 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
5237 	sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5238 	    sas_address);
5239 	if (sas_expander)
5240 		list_del(&sas_expander->list);
5241 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5242 	if (sas_expander)
5243 		_scsih_expander_node_remove(ioc, sas_expander);
5244 }
5245 
5246 /**
5247  * _scsih_done -  internal SCSI_IO callback handler.
5248  * @ioc: per adapter object
5249  * @smid: system request message index
5250  * @msix_index: MSIX table index supplied by the OS
5251  * @reply: reply message frame(lower 32bit addr)
5252  *
5253  * Callback handler when sending internal generated SCSI_IO.
5254  * The callback index passed is `ioc->scsih_cb_idx`
5255  *
5256  * Return 1 meaning mf should be freed from _base_interrupt
5257  *        0 means the mf is freed from this function.
5258  */
5259 static u8
5260 _scsih_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
5261 {
5262 	MPI2DefaultReply_t *mpi_reply;
5263 
5264 	mpi_reply =  mpt3sas_base_get_reply_virt_addr(ioc, reply);
5265 	if (ioc->scsih_cmds.status == MPT3_CMD_NOT_USED)
5266 		return 1;
5267 	if (ioc->scsih_cmds.smid != smid)
5268 		return 1;
5269 	ioc->scsih_cmds.status |= MPT3_CMD_COMPLETE;
5270 	if (mpi_reply) {
5271 		memcpy(ioc->scsih_cmds.reply, mpi_reply,
5272 		    mpi_reply->MsgLength*4);
5273 		ioc->scsih_cmds.status |= MPT3_CMD_REPLY_VALID;
5274 	}
5275 	ioc->scsih_cmds.status &= ~MPT3_CMD_PENDING;
5276 	complete(&ioc->scsih_cmds.done);
5277 	return 1;
5278 }
5279 
5280 
5281 
5282 
5283 #define MPT3_MAX_LUNS (255)
5284 
5285 
5286 /**
5287  * _scsih_check_access_status - check access flags
5288  * @ioc: per adapter object
5289  * @sas_address: sas address
5290  * @handle: sas device handle
5291  * @access_flags: errors returned during discovery of the device
5292  *
5293  * Return 0 for success, else failure
5294  */
5295 static u8
5296 _scsih_check_access_status(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
5297 	u16 handle, u8 access_status)
5298 {
5299 	u8 rc = 1;
5300 	char *desc = NULL;
5301 
5302 	switch (access_status) {
5303 	case MPI2_SAS_DEVICE0_ASTATUS_NO_ERRORS:
5304 	case MPI2_SAS_DEVICE0_ASTATUS_SATA_NEEDS_INITIALIZATION:
5305 		rc = 0;
5306 		break;
5307 	case MPI2_SAS_DEVICE0_ASTATUS_SATA_CAPABILITY_FAILED:
5308 		desc = "sata capability failed";
5309 		break;
5310 	case MPI2_SAS_DEVICE0_ASTATUS_SATA_AFFILIATION_CONFLICT:
5311 		desc = "sata affiliation conflict";
5312 		break;
5313 	case MPI2_SAS_DEVICE0_ASTATUS_ROUTE_NOT_ADDRESSABLE:
5314 		desc = "route not addressable";
5315 		break;
5316 	case MPI2_SAS_DEVICE0_ASTATUS_SMP_ERROR_NOT_ADDRESSABLE:
5317 		desc = "smp error not addressable";
5318 		break;
5319 	case MPI2_SAS_DEVICE0_ASTATUS_DEVICE_BLOCKED:
5320 		desc = "device blocked";
5321 		break;
5322 	case MPI2_SAS_DEVICE0_ASTATUS_SATA_INIT_FAILED:
5323 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_UNKNOWN:
5324 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_AFFILIATION_CONFLICT:
5325 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_DIAG:
5326 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_IDENTIFICATION:
5327 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_CHECK_POWER:
5328 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_PIO_SN:
5329 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_MDMA_SN:
5330 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_UDMA_SN:
5331 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_ZONING_VIOLATION:
5332 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_NOT_ADDRESSABLE:
5333 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_MAX:
5334 		desc = "sata initialization failed";
5335 		break;
5336 	default:
5337 		desc = "unknown";
5338 		break;
5339 	}
5340 
5341 	if (!rc)
5342 		return 0;
5343 
5344 	pr_err(MPT3SAS_FMT
5345 		"discovery errors(%s): sas_address(0x%016llx), handle(0x%04x)\n",
5346 		ioc->name, desc, (unsigned long long)sas_address, handle);
5347 	return rc;
5348 }
5349 
5350 /**
5351  * _scsih_check_device - checking device responsiveness
5352  * @ioc: per adapter object
5353  * @parent_sas_address: sas address of parent expander or sas host
5354  * @handle: attached device handle
5355  * @phy_numberv: phy number
5356  * @link_rate: new link rate
5357  *
5358  * Returns nothing.
5359  */
5360 static void
5361 _scsih_check_device(struct MPT3SAS_ADAPTER *ioc,
5362 	u64 parent_sas_address, u16 handle, u8 phy_number, u8 link_rate)
5363 {
5364 	Mpi2ConfigReply_t mpi_reply;
5365 	Mpi2SasDevicePage0_t sas_device_pg0;
5366 	struct _sas_device *sas_device;
5367 	u32 ioc_status;
5368 	unsigned long flags;
5369 	u64 sas_address;
5370 	struct scsi_target *starget;
5371 	struct MPT3SAS_TARGET *sas_target_priv_data;
5372 	u32 device_info;
5373 
5374 
5375 	if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
5376 	    MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle)))
5377 		return;
5378 
5379 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
5380 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
5381 		return;
5382 
5383 	/* wide port handling ~ we need only handle device once for the phy that
5384 	 * is matched in sas device page zero
5385 	 */
5386 	if (phy_number != sas_device_pg0.PhyNum)
5387 		return;
5388 
5389 	/* check if this is end device */
5390 	device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
5391 	if (!(_scsih_is_end_device(device_info)))
5392 		return;
5393 
5394 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
5395 	sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5396 	sas_device = __mpt3sas_get_sdev_by_addr(ioc,
5397 	    sas_address);
5398 
5399 	if (!sas_device)
5400 		goto out_unlock;
5401 
5402 	if (unlikely(sas_device->handle != handle)) {
5403 		starget = sas_device->starget;
5404 		sas_target_priv_data = starget->hostdata;
5405 		starget_printk(KERN_INFO, starget,
5406 			"handle changed from(0x%04x) to (0x%04x)!!!\n",
5407 			sas_device->handle, handle);
5408 		sas_target_priv_data->handle = handle;
5409 		sas_device->handle = handle;
5410 		if (le16_to_cpu(sas_device_pg0.Flags) &
5411 		     MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
5412 			sas_device->enclosure_level =
5413 				sas_device_pg0.EnclosureLevel;
5414 			memcpy(sas_device->connector_name,
5415 				sas_device_pg0.ConnectorName, 4);
5416 			sas_device->connector_name[4] = '\0';
5417 		} else {
5418 			sas_device->enclosure_level = 0;
5419 			sas_device->connector_name[0] = '\0';
5420 		}
5421 	}
5422 
5423 	/* check if device is present */
5424 	if (!(le16_to_cpu(sas_device_pg0.Flags) &
5425 	    MPI2_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)) {
5426 		pr_err(MPT3SAS_FMT
5427 			"device is not present handle(0x%04x), flags!!!\n",
5428 			ioc->name, handle);
5429 		goto out_unlock;
5430 	}
5431 
5432 	/* check if there were any issues with discovery */
5433 	if (_scsih_check_access_status(ioc, sas_address, handle,
5434 	    sas_device_pg0.AccessStatus))
5435 		goto out_unlock;
5436 
5437 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
5438 	_scsih_ublock_io_device(ioc, sas_address);
5439 
5440 	if (sas_device)
5441 		sas_device_put(sas_device);
5442 	return;
5443 
5444 out_unlock:
5445 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
5446 	if (sas_device)
5447 		sas_device_put(sas_device);
5448 }
5449 
5450 /**
5451  * _scsih_add_device -  creating sas device object
5452  * @ioc: per adapter object
5453  * @handle: sas device handle
5454  * @phy_num: phy number end device attached to
5455  * @is_pd: is this hidden raid component
5456  *
5457  * Creating end device object, stored in ioc->sas_device_list.
5458  *
5459  * Returns 0 for success, non-zero for failure.
5460  */
5461 static int
5462 _scsih_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle, u8 phy_num,
5463 	u8 is_pd)
5464 {
5465 	Mpi2ConfigReply_t mpi_reply;
5466 	Mpi2SasDevicePage0_t sas_device_pg0;
5467 	Mpi2SasEnclosurePage0_t enclosure_pg0;
5468 	struct _sas_device *sas_device;
5469 	u32 ioc_status;
5470 	u64 sas_address;
5471 	u32 device_info;
5472 
5473 	if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
5474 	    MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
5475 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5476 		    ioc->name, __FILE__, __LINE__, __func__);
5477 		return -1;
5478 	}
5479 
5480 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5481 	    MPI2_IOCSTATUS_MASK;
5482 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5483 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5484 		    ioc->name, __FILE__, __LINE__, __func__);
5485 		return -1;
5486 	}
5487 
5488 	/* check if this is end device */
5489 	device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
5490 	if (!(_scsih_is_end_device(device_info)))
5491 		return -1;
5492 	set_bit(handle, ioc->pend_os_device_add);
5493 	sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5494 
5495 	/* check if device is present */
5496 	if (!(le16_to_cpu(sas_device_pg0.Flags) &
5497 	    MPI2_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)) {
5498 		pr_err(MPT3SAS_FMT "device is not present handle(0x04%x)!!!\n",
5499 			ioc->name, handle);
5500 		return -1;
5501 	}
5502 
5503 	/* check if there were any issues with discovery */
5504 	if (_scsih_check_access_status(ioc, sas_address, handle,
5505 	    sas_device_pg0.AccessStatus))
5506 		return -1;
5507 
5508 	sas_device = mpt3sas_get_sdev_by_addr(ioc,
5509 					sas_address);
5510 	if (sas_device) {
5511 		clear_bit(handle, ioc->pend_os_device_add);
5512 		sas_device_put(sas_device);
5513 		return -1;
5514 	}
5515 
5516 	sas_device = kzalloc(sizeof(struct _sas_device),
5517 	    GFP_KERNEL);
5518 	if (!sas_device) {
5519 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5520 		    ioc->name, __FILE__, __LINE__, __func__);
5521 		return 0;
5522 	}
5523 
5524 	kref_init(&sas_device->refcount);
5525 	sas_device->handle = handle;
5526 	if (_scsih_get_sas_address(ioc,
5527 	    le16_to_cpu(sas_device_pg0.ParentDevHandle),
5528 	    &sas_device->sas_address_parent) != 0)
5529 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5530 		    ioc->name, __FILE__, __LINE__, __func__);
5531 	sas_device->enclosure_handle =
5532 	    le16_to_cpu(sas_device_pg0.EnclosureHandle);
5533 	if (sas_device->enclosure_handle != 0)
5534 		sas_device->slot =
5535 		    le16_to_cpu(sas_device_pg0.Slot);
5536 	sas_device->device_info = device_info;
5537 	sas_device->sas_address = sas_address;
5538 	sas_device->phy = sas_device_pg0.PhyNum;
5539 	sas_device->fast_path = (le16_to_cpu(sas_device_pg0.Flags) &
5540 	    MPI25_SAS_DEVICE0_FLAGS_FAST_PATH_CAPABLE) ? 1 : 0;
5541 
5542 	if (le16_to_cpu(sas_device_pg0.Flags)
5543 		& MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
5544 		sas_device->enclosure_level =
5545 			sas_device_pg0.EnclosureLevel;
5546 		memcpy(sas_device->connector_name,
5547 			sas_device_pg0.ConnectorName, 4);
5548 		sas_device->connector_name[4] = '\0';
5549 	} else {
5550 		sas_device->enclosure_level = 0;
5551 		sas_device->connector_name[0] = '\0';
5552 	}
5553 	/* get enclosure_logical_id */
5554 	if (sas_device->enclosure_handle && !(mpt3sas_config_get_enclosure_pg0(
5555 	   ioc, &mpi_reply, &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5556 	   sas_device->enclosure_handle)))
5557 		sas_device->enclosure_logical_id =
5558 		    le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5559 
5560 	/* get device name */
5561 	sas_device->device_name = le64_to_cpu(sas_device_pg0.DeviceName);
5562 
5563 	if (ioc->wait_for_discovery_to_complete)
5564 		_scsih_sas_device_init_add(ioc, sas_device);
5565 	else
5566 		_scsih_sas_device_add(ioc, sas_device);
5567 
5568 	sas_device_put(sas_device);
5569 	return 0;
5570 }
5571 
5572 /**
5573  * _scsih_remove_device -  removing sas device object
5574  * @ioc: per adapter object
5575  * @sas_device_delete: the sas_device object
5576  *
5577  * Return nothing.
5578  */
5579 static void
5580 _scsih_remove_device(struct MPT3SAS_ADAPTER *ioc,
5581 	struct _sas_device *sas_device)
5582 {
5583 	struct MPT3SAS_TARGET *sas_target_priv_data;
5584 
5585 	if ((ioc->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM) &&
5586 	     (sas_device->pfa_led_on)) {
5587 		_scsih_turn_off_pfa_led(ioc, sas_device);
5588 		sas_device->pfa_led_on = 0;
5589 	}
5590 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
5591 		"%s: enter: handle(0x%04x), sas_addr(0x%016llx)\n",
5592 		ioc->name, __func__,
5593 	    sas_device->handle, (unsigned long long)
5594 	    sas_device->sas_address));
5595 	if (sas_device->enclosure_handle != 0)
5596 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
5597 		    "%s: enter: enclosure logical id(0x%016llx), slot(%d)\n",
5598 		    ioc->name, __func__,
5599 		    (unsigned long long)sas_device->enclosure_logical_id,
5600 		    sas_device->slot));
5601 	if (sas_device->connector_name[0] != '\0')
5602 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
5603 		  "%s: enter: enclosure level(0x%04x), connector name( %s)\n",
5604 		  ioc->name, __func__,
5605 		  sas_device->enclosure_level,
5606 		  sas_device->connector_name));
5607 
5608 	if (sas_device->starget && sas_device->starget->hostdata) {
5609 		sas_target_priv_data = sas_device->starget->hostdata;
5610 		sas_target_priv_data->deleted = 1;
5611 		_scsih_ublock_io_device(ioc, sas_device->sas_address);
5612 		sas_target_priv_data->handle =
5613 		     MPT3SAS_INVALID_DEVICE_HANDLE;
5614 	}
5615 
5616 	if (!ioc->hide_drives)
5617 		mpt3sas_transport_port_remove(ioc,
5618 		    sas_device->sas_address,
5619 		    sas_device->sas_address_parent);
5620 
5621 	pr_info(MPT3SAS_FMT
5622 		"removing handle(0x%04x), sas_addr(0x%016llx)\n",
5623 		ioc->name, sas_device->handle,
5624 	    (unsigned long long) sas_device->sas_address);
5625 	if (sas_device->enclosure_handle != 0)
5626 		pr_info(MPT3SAS_FMT
5627 		  "removing : enclosure logical id(0x%016llx), slot(%d)\n",
5628 		  ioc->name,
5629 		  (unsigned long long)sas_device->enclosure_logical_id,
5630 		  sas_device->slot);
5631 	if (sas_device->connector_name[0] != '\0')
5632 		pr_info(MPT3SAS_FMT
5633 		  "removing enclosure level(0x%04x), connector name( %s)\n",
5634 		  ioc->name, sas_device->enclosure_level,
5635 		  sas_device->connector_name);
5636 
5637 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
5638 		"%s: exit: handle(0x%04x), sas_addr(0x%016llx)\n",
5639 		ioc->name, __func__,
5640 		sas_device->handle, (unsigned long long)
5641 		sas_device->sas_address));
5642 	if (sas_device->enclosure_handle != 0)
5643 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
5644 		    "%s: exit: enclosure logical id(0x%016llx), slot(%d)\n",
5645 		    ioc->name, __func__,
5646 		    (unsigned long long)sas_device->enclosure_logical_id,
5647 		    sas_device->slot));
5648 	if (sas_device->connector_name[0] != '\0')
5649 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
5650 		    "%s: exit: enclosure level(0x%04x), connector name(%s)\n",
5651 		    ioc->name, __func__, sas_device->enclosure_level,
5652 		    sas_device->connector_name));
5653 }
5654 
5655 /**
5656  * _scsih_sas_topology_change_event_debug - debug for topology event
5657  * @ioc: per adapter object
5658  * @event_data: event data payload
5659  * Context: user.
5660  */
5661 static void
5662 _scsih_sas_topology_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
5663 	Mpi2EventDataSasTopologyChangeList_t *event_data)
5664 {
5665 	int i;
5666 	u16 handle;
5667 	u16 reason_code;
5668 	u8 phy_number;
5669 	char *status_str = NULL;
5670 	u8 link_rate, prev_link_rate;
5671 
5672 	switch (event_data->ExpStatus) {
5673 	case MPI2_EVENT_SAS_TOPO_ES_ADDED:
5674 		status_str = "add";
5675 		break;
5676 	case MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING:
5677 		status_str = "remove";
5678 		break;
5679 	case MPI2_EVENT_SAS_TOPO_ES_RESPONDING:
5680 	case 0:
5681 		status_str =  "responding";
5682 		break;
5683 	case MPI2_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING:
5684 		status_str = "remove delay";
5685 		break;
5686 	default:
5687 		status_str = "unknown status";
5688 		break;
5689 	}
5690 	pr_info(MPT3SAS_FMT "sas topology change: (%s)\n",
5691 	    ioc->name, status_str);
5692 	pr_info("\thandle(0x%04x), enclosure_handle(0x%04x) " \
5693 	    "start_phy(%02d), count(%d)\n",
5694 	    le16_to_cpu(event_data->ExpanderDevHandle),
5695 	    le16_to_cpu(event_data->EnclosureHandle),
5696 	    event_data->StartPhyNum, event_data->NumEntries);
5697 	for (i = 0; i < event_data->NumEntries; i++) {
5698 		handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
5699 		if (!handle)
5700 			continue;
5701 		phy_number = event_data->StartPhyNum + i;
5702 		reason_code = event_data->PHY[i].PhyStatus &
5703 		    MPI2_EVENT_SAS_TOPO_RC_MASK;
5704 		switch (reason_code) {
5705 		case MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED:
5706 			status_str = "target add";
5707 			break;
5708 		case MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING:
5709 			status_str = "target remove";
5710 			break;
5711 		case MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING:
5712 			status_str = "delay target remove";
5713 			break;
5714 		case MPI2_EVENT_SAS_TOPO_RC_PHY_CHANGED:
5715 			status_str = "link rate change";
5716 			break;
5717 		case MPI2_EVENT_SAS_TOPO_RC_NO_CHANGE:
5718 			status_str = "target responding";
5719 			break;
5720 		default:
5721 			status_str = "unknown";
5722 			break;
5723 		}
5724 		link_rate = event_data->PHY[i].LinkRate >> 4;
5725 		prev_link_rate = event_data->PHY[i].LinkRate & 0xF;
5726 		pr_info("\tphy(%02d), attached_handle(0x%04x): %s:" \
5727 		    " link rate: new(0x%02x), old(0x%02x)\n", phy_number,
5728 		    handle, status_str, link_rate, prev_link_rate);
5729 
5730 	}
5731 }
5732 
5733 /**
5734  * _scsih_sas_topology_change_event - handle topology changes
5735  * @ioc: per adapter object
5736  * @fw_event: The fw_event_work object
5737  * Context: user.
5738  *
5739  */
5740 static int
5741 _scsih_sas_topology_change_event(struct MPT3SAS_ADAPTER *ioc,
5742 	struct fw_event_work *fw_event)
5743 {
5744 	int i;
5745 	u16 parent_handle, handle;
5746 	u16 reason_code;
5747 	u8 phy_number, max_phys;
5748 	struct _sas_node *sas_expander;
5749 	u64 sas_address;
5750 	unsigned long flags;
5751 	u8 link_rate, prev_link_rate;
5752 	Mpi2EventDataSasTopologyChangeList_t *event_data =
5753 		(Mpi2EventDataSasTopologyChangeList_t *)
5754 		fw_event->event_data;
5755 
5756 	if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
5757 		_scsih_sas_topology_change_event_debug(ioc, event_data);
5758 
5759 	if (ioc->shost_recovery || ioc->remove_host || ioc->pci_error_recovery)
5760 		return 0;
5761 
5762 	if (!ioc->sas_hba.num_phys)
5763 		_scsih_sas_host_add(ioc);
5764 	else
5765 		_scsih_sas_host_refresh(ioc);
5766 
5767 	if (fw_event->ignore) {
5768 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
5769 			"ignoring expander event\n", ioc->name));
5770 		return 0;
5771 	}
5772 
5773 	parent_handle = le16_to_cpu(event_data->ExpanderDevHandle);
5774 
5775 	/* handle expander add */
5776 	if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_ADDED)
5777 		if (_scsih_expander_add(ioc, parent_handle) != 0)
5778 			return 0;
5779 
5780 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
5781 	sas_expander = mpt3sas_scsih_expander_find_by_handle(ioc,
5782 	    parent_handle);
5783 	if (sas_expander) {
5784 		sas_address = sas_expander->sas_address;
5785 		max_phys = sas_expander->num_phys;
5786 	} else if (parent_handle < ioc->sas_hba.num_phys) {
5787 		sas_address = ioc->sas_hba.sas_address;
5788 		max_phys = ioc->sas_hba.num_phys;
5789 	} else {
5790 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5791 		return 0;
5792 	}
5793 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5794 
5795 	/* handle siblings events */
5796 	for (i = 0; i < event_data->NumEntries; i++) {
5797 		if (fw_event->ignore) {
5798 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
5799 				"ignoring expander event\n", ioc->name));
5800 			return 0;
5801 		}
5802 		if (ioc->remove_host || ioc->pci_error_recovery)
5803 			return 0;
5804 		phy_number = event_data->StartPhyNum + i;
5805 		if (phy_number >= max_phys)
5806 			continue;
5807 		reason_code = event_data->PHY[i].PhyStatus &
5808 		    MPI2_EVENT_SAS_TOPO_RC_MASK;
5809 		if ((event_data->PHY[i].PhyStatus &
5810 		    MPI2_EVENT_SAS_TOPO_PHYSTATUS_VACANT) && (reason_code !=
5811 		    MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING))
5812 				continue;
5813 		handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
5814 		if (!handle)
5815 			continue;
5816 		link_rate = event_data->PHY[i].LinkRate >> 4;
5817 		prev_link_rate = event_data->PHY[i].LinkRate & 0xF;
5818 		switch (reason_code) {
5819 		case MPI2_EVENT_SAS_TOPO_RC_PHY_CHANGED:
5820 
5821 			if (ioc->shost_recovery)
5822 				break;
5823 
5824 			if (link_rate == prev_link_rate)
5825 				break;
5826 
5827 			mpt3sas_transport_update_links(ioc, sas_address,
5828 			    handle, phy_number, link_rate);
5829 
5830 			if (link_rate < MPI2_SAS_NEG_LINK_RATE_1_5)
5831 				break;
5832 
5833 			_scsih_check_device(ioc, sas_address, handle,
5834 			    phy_number, link_rate);
5835 
5836 			if (!test_bit(handle, ioc->pend_os_device_add))
5837 				break;
5838 
5839 
5840 		case MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED:
5841 
5842 			if (ioc->shost_recovery)
5843 				break;
5844 
5845 			mpt3sas_transport_update_links(ioc, sas_address,
5846 			    handle, phy_number, link_rate);
5847 
5848 			_scsih_add_device(ioc, handle, phy_number, 0);
5849 
5850 			break;
5851 		case MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING:
5852 
5853 			_scsih_device_remove_by_handle(ioc, handle);
5854 			break;
5855 		}
5856 	}
5857 
5858 	/* handle expander removal */
5859 	if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING &&
5860 	    sas_expander)
5861 		mpt3sas_expander_remove(ioc, sas_address);
5862 
5863 	return 0;
5864 }
5865 
5866 /**
5867  * _scsih_sas_device_status_change_event_debug - debug for device event
5868  * @event_data: event data payload
5869  * Context: user.
5870  *
5871  * Return nothing.
5872  */
5873 static void
5874 _scsih_sas_device_status_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
5875 	Mpi2EventDataSasDeviceStatusChange_t *event_data)
5876 {
5877 	char *reason_str = NULL;
5878 
5879 	switch (event_data->ReasonCode) {
5880 	case MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA:
5881 		reason_str = "smart data";
5882 		break;
5883 	case MPI2_EVENT_SAS_DEV_STAT_RC_UNSUPPORTED:
5884 		reason_str = "unsupported device discovered";
5885 		break;
5886 	case MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET:
5887 		reason_str = "internal device reset";
5888 		break;
5889 	case MPI2_EVENT_SAS_DEV_STAT_RC_TASK_ABORT_INTERNAL:
5890 		reason_str = "internal task abort";
5891 		break;
5892 	case MPI2_EVENT_SAS_DEV_STAT_RC_ABORT_TASK_SET_INTERNAL:
5893 		reason_str = "internal task abort set";
5894 		break;
5895 	case MPI2_EVENT_SAS_DEV_STAT_RC_CLEAR_TASK_SET_INTERNAL:
5896 		reason_str = "internal clear task set";
5897 		break;
5898 	case MPI2_EVENT_SAS_DEV_STAT_RC_QUERY_TASK_INTERNAL:
5899 		reason_str = "internal query task";
5900 		break;
5901 	case MPI2_EVENT_SAS_DEV_STAT_RC_SATA_INIT_FAILURE:
5902 		reason_str = "sata init failure";
5903 		break;
5904 	case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_INTERNAL_DEV_RESET:
5905 		reason_str = "internal device reset complete";
5906 		break;
5907 	case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_TASK_ABORT_INTERNAL:
5908 		reason_str = "internal task abort complete";
5909 		break;
5910 	case MPI2_EVENT_SAS_DEV_STAT_RC_ASYNC_NOTIFICATION:
5911 		reason_str = "internal async notification";
5912 		break;
5913 	case MPI2_EVENT_SAS_DEV_STAT_RC_EXPANDER_REDUCED_FUNCTIONALITY:
5914 		reason_str = "expander reduced functionality";
5915 		break;
5916 	case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_EXPANDER_REDUCED_FUNCTIONALITY:
5917 		reason_str = "expander reduced functionality complete";
5918 		break;
5919 	default:
5920 		reason_str = "unknown reason";
5921 		break;
5922 	}
5923 	pr_info(MPT3SAS_FMT "device status change: (%s)\n"
5924 	    "\thandle(0x%04x), sas address(0x%016llx), tag(%d)",
5925 	    ioc->name, reason_str, le16_to_cpu(event_data->DevHandle),
5926 	    (unsigned long long)le64_to_cpu(event_data->SASAddress),
5927 	    le16_to_cpu(event_data->TaskTag));
5928 	if (event_data->ReasonCode == MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA)
5929 		pr_info(MPT3SAS_FMT ", ASC(0x%x), ASCQ(0x%x)\n", ioc->name,
5930 		    event_data->ASC, event_data->ASCQ);
5931 	pr_info("\n");
5932 }
5933 
5934 /**
5935  * _scsih_sas_device_status_change_event - handle device status change
5936  * @ioc: per adapter object
5937  * @fw_event: The fw_event_work object
5938  * Context: user.
5939  *
5940  * Return nothing.
5941  */
5942 static void
5943 _scsih_sas_device_status_change_event(struct MPT3SAS_ADAPTER *ioc,
5944 	struct fw_event_work *fw_event)
5945 {
5946 	struct MPT3SAS_TARGET *target_priv_data;
5947 	struct _sas_device *sas_device;
5948 	u64 sas_address;
5949 	unsigned long flags;
5950 	Mpi2EventDataSasDeviceStatusChange_t *event_data =
5951 		(Mpi2EventDataSasDeviceStatusChange_t *)
5952 		fw_event->event_data;
5953 
5954 	if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
5955 		_scsih_sas_device_status_change_event_debug(ioc,
5956 		     event_data);
5957 
5958 	/* In MPI Revision K (0xC), the internal device reset complete was
5959 	 * implemented, so avoid setting tm_busy flag for older firmware.
5960 	 */
5961 	if ((ioc->facts.HeaderVersion >> 8) < 0xC)
5962 		return;
5963 
5964 	if (event_data->ReasonCode !=
5965 	    MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET &&
5966 	   event_data->ReasonCode !=
5967 	    MPI2_EVENT_SAS_DEV_STAT_RC_CMP_INTERNAL_DEV_RESET)
5968 		return;
5969 
5970 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
5971 	sas_address = le64_to_cpu(event_data->SASAddress);
5972 	sas_device = __mpt3sas_get_sdev_by_addr(ioc,
5973 	    sas_address);
5974 
5975 	if (!sas_device || !sas_device->starget)
5976 		goto out;
5977 
5978 	target_priv_data = sas_device->starget->hostdata;
5979 	if (!target_priv_data)
5980 		goto out;
5981 
5982 	if (event_data->ReasonCode ==
5983 	    MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET)
5984 		target_priv_data->tm_busy = 1;
5985 	else
5986 		target_priv_data->tm_busy = 0;
5987 
5988 out:
5989 	if (sas_device)
5990 		sas_device_put(sas_device);
5991 
5992 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
5993 
5994 }
5995 
5996 /**
5997  * _scsih_sas_enclosure_dev_status_change_event_debug - debug for enclosure
5998  * event
5999  * @ioc: per adapter object
6000  * @event_data: event data payload
6001  * Context: user.
6002  *
6003  * Return nothing.
6004  */
6005 static void
6006 _scsih_sas_enclosure_dev_status_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
6007 	Mpi2EventDataSasEnclDevStatusChange_t *event_data)
6008 {
6009 	char *reason_str = NULL;
6010 
6011 	switch (event_data->ReasonCode) {
6012 	case MPI2_EVENT_SAS_ENCL_RC_ADDED:
6013 		reason_str = "enclosure add";
6014 		break;
6015 	case MPI2_EVENT_SAS_ENCL_RC_NOT_RESPONDING:
6016 		reason_str = "enclosure remove";
6017 		break;
6018 	default:
6019 		reason_str = "unknown reason";
6020 		break;
6021 	}
6022 
6023 	pr_info(MPT3SAS_FMT "enclosure status change: (%s)\n"
6024 	    "\thandle(0x%04x), enclosure logical id(0x%016llx)"
6025 	    " number slots(%d)\n", ioc->name, reason_str,
6026 	    le16_to_cpu(event_data->EnclosureHandle),
6027 	    (unsigned long long)le64_to_cpu(event_data->EnclosureLogicalID),
6028 	    le16_to_cpu(event_data->StartSlot));
6029 }
6030 
6031 /**
6032  * _scsih_sas_enclosure_dev_status_change_event - handle enclosure events
6033  * @ioc: per adapter object
6034  * @fw_event: The fw_event_work object
6035  * Context: user.
6036  *
6037  * Return nothing.
6038  */
6039 static void
6040 _scsih_sas_enclosure_dev_status_change_event(struct MPT3SAS_ADAPTER *ioc,
6041 	struct fw_event_work *fw_event)
6042 {
6043 	if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
6044 		_scsih_sas_enclosure_dev_status_change_event_debug(ioc,
6045 		     (Mpi2EventDataSasEnclDevStatusChange_t *)
6046 		     fw_event->event_data);
6047 }
6048 
6049 /**
6050  * _scsih_sas_broadcast_primitive_event - handle broadcast events
6051  * @ioc: per adapter object
6052  * @fw_event: The fw_event_work object
6053  * Context: user.
6054  *
6055  * Return nothing.
6056  */
6057 static void
6058 _scsih_sas_broadcast_primitive_event(struct MPT3SAS_ADAPTER *ioc,
6059 	struct fw_event_work *fw_event)
6060 {
6061 	struct scsi_cmnd *scmd;
6062 	struct scsi_device *sdev;
6063 	u16 smid, handle;
6064 	u32 lun;
6065 	struct MPT3SAS_DEVICE *sas_device_priv_data;
6066 	u32 termination_count;
6067 	u32 query_count;
6068 	Mpi2SCSITaskManagementReply_t *mpi_reply;
6069 	Mpi2EventDataSasBroadcastPrimitive_t *event_data =
6070 		(Mpi2EventDataSasBroadcastPrimitive_t *)
6071 		fw_event->event_data;
6072 	u16 ioc_status;
6073 	unsigned long flags;
6074 	int r;
6075 	u8 max_retries = 0;
6076 	u8 task_abort_retries;
6077 
6078 	mutex_lock(&ioc->tm_cmds.mutex);
6079 	pr_info(MPT3SAS_FMT
6080 		"%s: enter: phy number(%d), width(%d)\n",
6081 		ioc->name, __func__, event_data->PhyNum,
6082 	     event_data->PortWidth);
6083 
6084 	_scsih_block_io_all_device(ioc);
6085 
6086 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6087 	mpi_reply = ioc->tm_cmds.reply;
6088  broadcast_aen_retry:
6089 
6090 	/* sanity checks for retrying this loop */
6091 	if (max_retries++ == 5) {
6092 		dewtprintk(ioc, pr_info(MPT3SAS_FMT "%s: giving up\n",
6093 		    ioc->name, __func__));
6094 		goto out;
6095 	} else if (max_retries > 1)
6096 		dewtprintk(ioc, pr_info(MPT3SAS_FMT "%s: %d retry\n",
6097 		    ioc->name, __func__, max_retries - 1));
6098 
6099 	termination_count = 0;
6100 	query_count = 0;
6101 	for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
6102 		if (ioc->shost_recovery)
6103 			goto out;
6104 		scmd = _scsih_scsi_lookup_get(ioc, smid);
6105 		if (!scmd)
6106 			continue;
6107 		sdev = scmd->device;
6108 		sas_device_priv_data = sdev->hostdata;
6109 		if (!sas_device_priv_data || !sas_device_priv_data->sas_target)
6110 			continue;
6111 		 /* skip hidden raid components */
6112 		if (sas_device_priv_data->sas_target->flags &
6113 		    MPT_TARGET_FLAGS_RAID_COMPONENT)
6114 			continue;
6115 		 /* skip volumes */
6116 		if (sas_device_priv_data->sas_target->flags &
6117 		    MPT_TARGET_FLAGS_VOLUME)
6118 			continue;
6119 
6120 		handle = sas_device_priv_data->sas_target->handle;
6121 		lun = sas_device_priv_data->lun;
6122 		query_count++;
6123 
6124 		if (ioc->shost_recovery)
6125 			goto out;
6126 
6127 		spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
6128 		r = mpt3sas_scsih_issue_tm(ioc, handle, 0, 0, lun,
6129 		    MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK, smid, 30);
6130 		if (r == FAILED) {
6131 			sdev_printk(KERN_WARNING, sdev,
6132 			    "mpt3sas_scsih_issue_tm: FAILED when sending "
6133 			    "QUERY_TASK: scmd(%p)\n", scmd);
6134 			spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6135 			goto broadcast_aen_retry;
6136 		}
6137 		ioc_status = le16_to_cpu(mpi_reply->IOCStatus)
6138 		    & MPI2_IOCSTATUS_MASK;
6139 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6140 			sdev_printk(KERN_WARNING, sdev,
6141 				"query task: FAILED with IOCSTATUS(0x%04x), scmd(%p)\n",
6142 				ioc_status, scmd);
6143 			spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6144 			goto broadcast_aen_retry;
6145 		}
6146 
6147 		/* see if IO is still owned by IOC and target */
6148 		if (mpi_reply->ResponseCode ==
6149 		     MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED ||
6150 		     mpi_reply->ResponseCode ==
6151 		     MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC) {
6152 			spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6153 			continue;
6154 		}
6155 		task_abort_retries = 0;
6156  tm_retry:
6157 		if (task_abort_retries++ == 60) {
6158 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
6159 			    "%s: ABORT_TASK: giving up\n", ioc->name,
6160 			    __func__));
6161 			spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6162 			goto broadcast_aen_retry;
6163 		}
6164 
6165 		if (ioc->shost_recovery)
6166 			goto out_no_lock;
6167 
6168 		r = mpt3sas_scsih_issue_tm(ioc, handle, sdev->channel, sdev->id,
6169 		    sdev->lun, MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, smid,
6170 		    30);
6171 		if (r == FAILED) {
6172 			sdev_printk(KERN_WARNING, sdev,
6173 			    "mpt3sas_scsih_issue_tm: ABORT_TASK: FAILED : "
6174 			    "scmd(%p)\n", scmd);
6175 			goto tm_retry;
6176 		}
6177 
6178 		if (task_abort_retries > 1)
6179 			sdev_printk(KERN_WARNING, sdev,
6180 			    "mpt3sas_scsih_issue_tm: ABORT_TASK: RETRIES (%d):"
6181 			    " scmd(%p)\n",
6182 			    task_abort_retries - 1, scmd);
6183 
6184 		termination_count += le32_to_cpu(mpi_reply->TerminationCount);
6185 		spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6186 	}
6187 
6188 	if (ioc->broadcast_aen_pending) {
6189 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
6190 			"%s: loop back due to pending AEN\n",
6191 			ioc->name, __func__));
6192 		 ioc->broadcast_aen_pending = 0;
6193 		 goto broadcast_aen_retry;
6194 	}
6195 
6196  out:
6197 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
6198  out_no_lock:
6199 
6200 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
6201 	    "%s - exit, query_count = %d termination_count = %d\n",
6202 	    ioc->name, __func__, query_count, termination_count));
6203 
6204 	ioc->broadcast_aen_busy = 0;
6205 	if (!ioc->shost_recovery)
6206 		_scsih_ublock_io_all_device(ioc);
6207 	mutex_unlock(&ioc->tm_cmds.mutex);
6208 }
6209 
6210 /**
6211  * _scsih_sas_discovery_event - handle discovery events
6212  * @ioc: per adapter object
6213  * @fw_event: The fw_event_work object
6214  * Context: user.
6215  *
6216  * Return nothing.
6217  */
6218 static void
6219 _scsih_sas_discovery_event(struct MPT3SAS_ADAPTER *ioc,
6220 	struct fw_event_work *fw_event)
6221 {
6222 	Mpi2EventDataSasDiscovery_t *event_data =
6223 		(Mpi2EventDataSasDiscovery_t *) fw_event->event_data;
6224 
6225 	if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) {
6226 		pr_info(MPT3SAS_FMT "discovery event: (%s)", ioc->name,
6227 		    (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED) ?
6228 		    "start" : "stop");
6229 		if (event_data->DiscoveryStatus)
6230 			pr_info("discovery_status(0x%08x)",
6231 			    le32_to_cpu(event_data->DiscoveryStatus));
6232 		pr_info("\n");
6233 	}
6234 
6235 	if (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED &&
6236 	    !ioc->sas_hba.num_phys) {
6237 		if (disable_discovery > 0 && ioc->shost_recovery) {
6238 			/* Wait for the reset to complete */
6239 			while (ioc->shost_recovery)
6240 				ssleep(1);
6241 		}
6242 		_scsih_sas_host_add(ioc);
6243 	}
6244 }
6245 
6246 /**
6247  * _scsih_ir_fastpath - turn on fastpath for IR physdisk
6248  * @ioc: per adapter object
6249  * @handle: device handle for physical disk
6250  * @phys_disk_num: physical disk number
6251  *
6252  * Return 0 for success, else failure.
6253  */
6254 static int
6255 _scsih_ir_fastpath(struct MPT3SAS_ADAPTER *ioc, u16 handle, u8 phys_disk_num)
6256 {
6257 	Mpi2RaidActionRequest_t *mpi_request;
6258 	Mpi2RaidActionReply_t *mpi_reply;
6259 	u16 smid;
6260 	u8 issue_reset = 0;
6261 	int rc = 0;
6262 	u16 ioc_status;
6263 	u32 log_info;
6264 
6265 	if (ioc->hba_mpi_version_belonged == MPI2_VERSION)
6266 		return rc;
6267 
6268 	mutex_lock(&ioc->scsih_cmds.mutex);
6269 
6270 	if (ioc->scsih_cmds.status != MPT3_CMD_NOT_USED) {
6271 		pr_err(MPT3SAS_FMT "%s: scsih_cmd in use\n",
6272 		    ioc->name, __func__);
6273 		rc = -EAGAIN;
6274 		goto out;
6275 	}
6276 	ioc->scsih_cmds.status = MPT3_CMD_PENDING;
6277 
6278 	smid = mpt3sas_base_get_smid(ioc, ioc->scsih_cb_idx);
6279 	if (!smid) {
6280 		pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
6281 		    ioc->name, __func__);
6282 		ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
6283 		rc = -EAGAIN;
6284 		goto out;
6285 	}
6286 
6287 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
6288 	ioc->scsih_cmds.smid = smid;
6289 	memset(mpi_request, 0, sizeof(Mpi2RaidActionRequest_t));
6290 
6291 	mpi_request->Function = MPI2_FUNCTION_RAID_ACTION;
6292 	mpi_request->Action = MPI2_RAID_ACTION_PHYSDISK_HIDDEN;
6293 	mpi_request->PhysDiskNum = phys_disk_num;
6294 
6295 	dewtprintk(ioc, pr_info(MPT3SAS_FMT "IR RAID_ACTION: turning fast "\
6296 	    "path on for handle(0x%04x), phys_disk_num (0x%02x)\n", ioc->name,
6297 	    handle, phys_disk_num));
6298 
6299 	init_completion(&ioc->scsih_cmds.done);
6300 	ioc->put_smid_default(ioc, smid);
6301 	wait_for_completion_timeout(&ioc->scsih_cmds.done, 10*HZ);
6302 
6303 	if (!(ioc->scsih_cmds.status & MPT3_CMD_COMPLETE)) {
6304 		pr_err(MPT3SAS_FMT "%s: timeout\n",
6305 		    ioc->name, __func__);
6306 		if (!(ioc->scsih_cmds.status & MPT3_CMD_RESET))
6307 			issue_reset = 1;
6308 		rc = -EFAULT;
6309 		goto out;
6310 	}
6311 
6312 	if (ioc->scsih_cmds.status & MPT3_CMD_REPLY_VALID) {
6313 
6314 		mpi_reply = ioc->scsih_cmds.reply;
6315 		ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
6316 		if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
6317 			log_info =  le32_to_cpu(mpi_reply->IOCLogInfo);
6318 		else
6319 			log_info = 0;
6320 		ioc_status &= MPI2_IOCSTATUS_MASK;
6321 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6322 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
6323 			    "IR RAID_ACTION: failed: ioc_status(0x%04x), "
6324 			    "loginfo(0x%08x)!!!\n", ioc->name, ioc_status,
6325 			    log_info));
6326 			rc = -EFAULT;
6327 		} else
6328 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
6329 			    "IR RAID_ACTION: completed successfully\n",
6330 			    ioc->name));
6331 	}
6332 
6333  out:
6334 	ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
6335 	mutex_unlock(&ioc->scsih_cmds.mutex);
6336 
6337 	if (issue_reset)
6338 		mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
6339 	return rc;
6340 }
6341 
6342 /**
6343  * _scsih_reprobe_lun - reprobing lun
6344  * @sdev: scsi device struct
6345  * @no_uld_attach: sdev->no_uld_attach flag setting
6346  *
6347  **/
6348 static void
6349 _scsih_reprobe_lun(struct scsi_device *sdev, void *no_uld_attach)
6350 {
6351 	sdev->no_uld_attach = no_uld_attach ? 1 : 0;
6352 	sdev_printk(KERN_INFO, sdev, "%s raid component\n",
6353 	    sdev->no_uld_attach ? "hiding" : "exposing");
6354 	WARN_ON(scsi_device_reprobe(sdev));
6355 }
6356 
6357 /**
6358  * _scsih_sas_volume_add - add new volume
6359  * @ioc: per adapter object
6360  * @element: IR config element data
6361  * Context: user.
6362  *
6363  * Return nothing.
6364  */
6365 static void
6366 _scsih_sas_volume_add(struct MPT3SAS_ADAPTER *ioc,
6367 	Mpi2EventIrConfigElement_t *element)
6368 {
6369 	struct _raid_device *raid_device;
6370 	unsigned long flags;
6371 	u64 wwid;
6372 	u16 handle = le16_to_cpu(element->VolDevHandle);
6373 	int rc;
6374 
6375 	mpt3sas_config_get_volume_wwid(ioc, handle, &wwid);
6376 	if (!wwid) {
6377 		pr_err(MPT3SAS_FMT
6378 		    "failure at %s:%d/%s()!\n", ioc->name,
6379 		    __FILE__, __LINE__, __func__);
6380 		return;
6381 	}
6382 
6383 	spin_lock_irqsave(&ioc->raid_device_lock, flags);
6384 	raid_device = _scsih_raid_device_find_by_wwid(ioc, wwid);
6385 	spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6386 
6387 	if (raid_device)
6388 		return;
6389 
6390 	raid_device = kzalloc(sizeof(struct _raid_device), GFP_KERNEL);
6391 	if (!raid_device) {
6392 		pr_err(MPT3SAS_FMT
6393 		    "failure at %s:%d/%s()!\n", ioc->name,
6394 		    __FILE__, __LINE__, __func__);
6395 		return;
6396 	}
6397 
6398 	raid_device->id = ioc->sas_id++;
6399 	raid_device->channel = RAID_CHANNEL;
6400 	raid_device->handle = handle;
6401 	raid_device->wwid = wwid;
6402 	_scsih_raid_device_add(ioc, raid_device);
6403 	if (!ioc->wait_for_discovery_to_complete) {
6404 		rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
6405 		    raid_device->id, 0);
6406 		if (rc)
6407 			_scsih_raid_device_remove(ioc, raid_device);
6408 	} else {
6409 		spin_lock_irqsave(&ioc->raid_device_lock, flags);
6410 		_scsih_determine_boot_device(ioc, raid_device, 1);
6411 		spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6412 	}
6413 }
6414 
6415 /**
6416  * _scsih_sas_volume_delete - delete volume
6417  * @ioc: per adapter object
6418  * @handle: volume device handle
6419  * Context: user.
6420  *
6421  * Return nothing.
6422  */
6423 static void
6424 _scsih_sas_volume_delete(struct MPT3SAS_ADAPTER *ioc, u16 handle)
6425 {
6426 	struct _raid_device *raid_device;
6427 	unsigned long flags;
6428 	struct MPT3SAS_TARGET *sas_target_priv_data;
6429 	struct scsi_target *starget = NULL;
6430 
6431 	spin_lock_irqsave(&ioc->raid_device_lock, flags);
6432 	raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
6433 	if (raid_device) {
6434 		if (raid_device->starget) {
6435 			starget = raid_device->starget;
6436 			sas_target_priv_data = starget->hostdata;
6437 			sas_target_priv_data->deleted = 1;
6438 		}
6439 		pr_info(MPT3SAS_FMT "removing handle(0x%04x), wwid(0x%016llx)\n",
6440 			ioc->name,  raid_device->handle,
6441 		    (unsigned long long) raid_device->wwid);
6442 		list_del(&raid_device->list);
6443 		kfree(raid_device);
6444 	}
6445 	spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6446 	if (starget)
6447 		scsi_remove_target(&starget->dev);
6448 }
6449 
6450 /**
6451  * _scsih_sas_pd_expose - expose pd component to /dev/sdX
6452  * @ioc: per adapter object
6453  * @element: IR config element data
6454  * Context: user.
6455  *
6456  * Return nothing.
6457  */
6458 static void
6459 _scsih_sas_pd_expose(struct MPT3SAS_ADAPTER *ioc,
6460 	Mpi2EventIrConfigElement_t *element)
6461 {
6462 	struct _sas_device *sas_device;
6463 	struct scsi_target *starget = NULL;
6464 	struct MPT3SAS_TARGET *sas_target_priv_data;
6465 	unsigned long flags;
6466 	u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6467 
6468 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
6469 	sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
6470 	if (sas_device) {
6471 		sas_device->volume_handle = 0;
6472 		sas_device->volume_wwid = 0;
6473 		clear_bit(handle, ioc->pd_handles);
6474 		if (sas_device->starget && sas_device->starget->hostdata) {
6475 			starget = sas_device->starget;
6476 			sas_target_priv_data = starget->hostdata;
6477 			sas_target_priv_data->flags &=
6478 			    ~MPT_TARGET_FLAGS_RAID_COMPONENT;
6479 		}
6480 	}
6481 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
6482 	if (!sas_device)
6483 		return;
6484 
6485 	/* exposing raid component */
6486 	if (starget)
6487 		starget_for_each_device(starget, NULL, _scsih_reprobe_lun);
6488 
6489 	sas_device_put(sas_device);
6490 }
6491 
6492 /**
6493  * _scsih_sas_pd_hide - hide pd component from /dev/sdX
6494  * @ioc: per adapter object
6495  * @element: IR config element data
6496  * Context: user.
6497  *
6498  * Return nothing.
6499  */
6500 static void
6501 _scsih_sas_pd_hide(struct MPT3SAS_ADAPTER *ioc,
6502 	Mpi2EventIrConfigElement_t *element)
6503 {
6504 	struct _sas_device *sas_device;
6505 	struct scsi_target *starget = NULL;
6506 	struct MPT3SAS_TARGET *sas_target_priv_data;
6507 	unsigned long flags;
6508 	u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6509 	u16 volume_handle = 0;
6510 	u64 volume_wwid = 0;
6511 
6512 	mpt3sas_config_get_volume_handle(ioc, handle, &volume_handle);
6513 	if (volume_handle)
6514 		mpt3sas_config_get_volume_wwid(ioc, volume_handle,
6515 		    &volume_wwid);
6516 
6517 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
6518 	sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
6519 	if (sas_device) {
6520 		set_bit(handle, ioc->pd_handles);
6521 		if (sas_device->starget && sas_device->starget->hostdata) {
6522 			starget = sas_device->starget;
6523 			sas_target_priv_data = starget->hostdata;
6524 			sas_target_priv_data->flags |=
6525 			    MPT_TARGET_FLAGS_RAID_COMPONENT;
6526 			sas_device->volume_handle = volume_handle;
6527 			sas_device->volume_wwid = volume_wwid;
6528 		}
6529 	}
6530 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
6531 	if (!sas_device)
6532 		return;
6533 
6534 	/* hiding raid component */
6535 	_scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6536 
6537 	if (starget)
6538 		starget_for_each_device(starget, (void *)1, _scsih_reprobe_lun);
6539 
6540 	sas_device_put(sas_device);
6541 }
6542 
6543 /**
6544  * _scsih_sas_pd_delete - delete pd component
6545  * @ioc: per adapter object
6546  * @element: IR config element data
6547  * Context: user.
6548  *
6549  * Return nothing.
6550  */
6551 static void
6552 _scsih_sas_pd_delete(struct MPT3SAS_ADAPTER *ioc,
6553 	Mpi2EventIrConfigElement_t *element)
6554 {
6555 	u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6556 
6557 	_scsih_device_remove_by_handle(ioc, handle);
6558 }
6559 
6560 /**
6561  * _scsih_sas_pd_add - remove pd component
6562  * @ioc: per adapter object
6563  * @element: IR config element data
6564  * Context: user.
6565  *
6566  * Return nothing.
6567  */
6568 static void
6569 _scsih_sas_pd_add(struct MPT3SAS_ADAPTER *ioc,
6570 	Mpi2EventIrConfigElement_t *element)
6571 {
6572 	struct _sas_device *sas_device;
6573 	u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6574 	Mpi2ConfigReply_t mpi_reply;
6575 	Mpi2SasDevicePage0_t sas_device_pg0;
6576 	u32 ioc_status;
6577 	u64 sas_address;
6578 	u16 parent_handle;
6579 
6580 	set_bit(handle, ioc->pd_handles);
6581 
6582 	sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
6583 	if (sas_device) {
6584 		_scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6585 		sas_device_put(sas_device);
6586 		return;
6587 	}
6588 
6589 	if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
6590 	    MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
6591 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6592 		    ioc->name, __FILE__, __LINE__, __func__);
6593 		return;
6594 	}
6595 
6596 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
6597 	    MPI2_IOCSTATUS_MASK;
6598 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6599 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6600 		    ioc->name, __FILE__, __LINE__, __func__);
6601 		return;
6602 	}
6603 
6604 	parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
6605 	if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address))
6606 		mpt3sas_transport_update_links(ioc, sas_address, handle,
6607 		    sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
6608 
6609 	_scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6610 	_scsih_add_device(ioc, handle, 0, 1);
6611 }
6612 
6613 /**
6614  * _scsih_sas_ir_config_change_event_debug - debug for IR Config Change events
6615  * @ioc: per adapter object
6616  * @event_data: event data payload
6617  * Context: user.
6618  *
6619  * Return nothing.
6620  */
6621 static void
6622 _scsih_sas_ir_config_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
6623 	Mpi2EventDataIrConfigChangeList_t *event_data)
6624 {
6625 	Mpi2EventIrConfigElement_t *element;
6626 	u8 element_type;
6627 	int i;
6628 	char *reason_str = NULL, *element_str = NULL;
6629 
6630 	element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
6631 
6632 	pr_info(MPT3SAS_FMT "raid config change: (%s), elements(%d)\n",
6633 	    ioc->name, (le32_to_cpu(event_data->Flags) &
6634 	    MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG) ?
6635 	    "foreign" : "native", event_data->NumElements);
6636 	for (i = 0; i < event_data->NumElements; i++, element++) {
6637 		switch (element->ReasonCode) {
6638 		case MPI2_EVENT_IR_CHANGE_RC_ADDED:
6639 			reason_str = "add";
6640 			break;
6641 		case MPI2_EVENT_IR_CHANGE_RC_REMOVED:
6642 			reason_str = "remove";
6643 			break;
6644 		case MPI2_EVENT_IR_CHANGE_RC_NO_CHANGE:
6645 			reason_str = "no change";
6646 			break;
6647 		case MPI2_EVENT_IR_CHANGE_RC_HIDE:
6648 			reason_str = "hide";
6649 			break;
6650 		case MPI2_EVENT_IR_CHANGE_RC_UNHIDE:
6651 			reason_str = "unhide";
6652 			break;
6653 		case MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED:
6654 			reason_str = "volume_created";
6655 			break;
6656 		case MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED:
6657 			reason_str = "volume_deleted";
6658 			break;
6659 		case MPI2_EVENT_IR_CHANGE_RC_PD_CREATED:
6660 			reason_str = "pd_created";
6661 			break;
6662 		case MPI2_EVENT_IR_CHANGE_RC_PD_DELETED:
6663 			reason_str = "pd_deleted";
6664 			break;
6665 		default:
6666 			reason_str = "unknown reason";
6667 			break;
6668 		}
6669 		element_type = le16_to_cpu(element->ElementFlags) &
6670 		    MPI2_EVENT_IR_CHANGE_EFLAGS_ELEMENT_TYPE_MASK;
6671 		switch (element_type) {
6672 		case MPI2_EVENT_IR_CHANGE_EFLAGS_VOLUME_ELEMENT:
6673 			element_str = "volume";
6674 			break;
6675 		case MPI2_EVENT_IR_CHANGE_EFLAGS_VOLPHYSDISK_ELEMENT:
6676 			element_str = "phys disk";
6677 			break;
6678 		case MPI2_EVENT_IR_CHANGE_EFLAGS_HOTSPARE_ELEMENT:
6679 			element_str = "hot spare";
6680 			break;
6681 		default:
6682 			element_str = "unknown element";
6683 			break;
6684 		}
6685 		pr_info("\t(%s:%s), vol handle(0x%04x), " \
6686 		    "pd handle(0x%04x), pd num(0x%02x)\n", element_str,
6687 		    reason_str, le16_to_cpu(element->VolDevHandle),
6688 		    le16_to_cpu(element->PhysDiskDevHandle),
6689 		    element->PhysDiskNum);
6690 	}
6691 }
6692 
6693 /**
6694  * _scsih_sas_ir_config_change_event - handle ir configuration change events
6695  * @ioc: per adapter object
6696  * @fw_event: The fw_event_work object
6697  * Context: user.
6698  *
6699  * Return nothing.
6700  */
6701 static void
6702 _scsih_sas_ir_config_change_event(struct MPT3SAS_ADAPTER *ioc,
6703 	struct fw_event_work *fw_event)
6704 {
6705 	Mpi2EventIrConfigElement_t *element;
6706 	int i;
6707 	u8 foreign_config;
6708 	Mpi2EventDataIrConfigChangeList_t *event_data =
6709 		(Mpi2EventDataIrConfigChangeList_t *)
6710 		fw_event->event_data;
6711 
6712 	if ((ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) &&
6713 	     (!ioc->hide_ir_msg))
6714 		_scsih_sas_ir_config_change_event_debug(ioc, event_data);
6715 
6716 	foreign_config = (le32_to_cpu(event_data->Flags) &
6717 	    MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG) ? 1 : 0;
6718 
6719 	element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
6720 	if (ioc->shost_recovery &&
6721 	    ioc->hba_mpi_version_belonged != MPI2_VERSION) {
6722 		for (i = 0; i < event_data->NumElements; i++, element++) {
6723 			if (element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_HIDE)
6724 				_scsih_ir_fastpath(ioc,
6725 					le16_to_cpu(element->PhysDiskDevHandle),
6726 					element->PhysDiskNum);
6727 		}
6728 		return;
6729 	}
6730 
6731 	for (i = 0; i < event_data->NumElements; i++, element++) {
6732 
6733 		switch (element->ReasonCode) {
6734 		case MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED:
6735 		case MPI2_EVENT_IR_CHANGE_RC_ADDED:
6736 			if (!foreign_config)
6737 				_scsih_sas_volume_add(ioc, element);
6738 			break;
6739 		case MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED:
6740 		case MPI2_EVENT_IR_CHANGE_RC_REMOVED:
6741 			if (!foreign_config)
6742 				_scsih_sas_volume_delete(ioc,
6743 				    le16_to_cpu(element->VolDevHandle));
6744 			break;
6745 		case MPI2_EVENT_IR_CHANGE_RC_PD_CREATED:
6746 			if (!ioc->is_warpdrive)
6747 				_scsih_sas_pd_hide(ioc, element);
6748 			break;
6749 		case MPI2_EVENT_IR_CHANGE_RC_PD_DELETED:
6750 			if (!ioc->is_warpdrive)
6751 				_scsih_sas_pd_expose(ioc, element);
6752 			break;
6753 		case MPI2_EVENT_IR_CHANGE_RC_HIDE:
6754 			if (!ioc->is_warpdrive)
6755 				_scsih_sas_pd_add(ioc, element);
6756 			break;
6757 		case MPI2_EVENT_IR_CHANGE_RC_UNHIDE:
6758 			if (!ioc->is_warpdrive)
6759 				_scsih_sas_pd_delete(ioc, element);
6760 			break;
6761 		}
6762 	}
6763 }
6764 
6765 /**
6766  * _scsih_sas_ir_volume_event - IR volume event
6767  * @ioc: per adapter object
6768  * @fw_event: The fw_event_work object
6769  * Context: user.
6770  *
6771  * Return nothing.
6772  */
6773 static void
6774 _scsih_sas_ir_volume_event(struct MPT3SAS_ADAPTER *ioc,
6775 	struct fw_event_work *fw_event)
6776 {
6777 	u64 wwid;
6778 	unsigned long flags;
6779 	struct _raid_device *raid_device;
6780 	u16 handle;
6781 	u32 state;
6782 	int rc;
6783 	Mpi2EventDataIrVolume_t *event_data =
6784 		(Mpi2EventDataIrVolume_t *) fw_event->event_data;
6785 
6786 	if (ioc->shost_recovery)
6787 		return;
6788 
6789 	if (event_data->ReasonCode != MPI2_EVENT_IR_VOLUME_RC_STATE_CHANGED)
6790 		return;
6791 
6792 	handle = le16_to_cpu(event_data->VolDevHandle);
6793 	state = le32_to_cpu(event_data->NewValue);
6794 	if (!ioc->hide_ir_msg)
6795 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
6796 		    "%s: handle(0x%04x), old(0x%08x), new(0x%08x)\n",
6797 		    ioc->name, __func__,  handle,
6798 		    le32_to_cpu(event_data->PreviousValue), state));
6799 	switch (state) {
6800 	case MPI2_RAID_VOL_STATE_MISSING:
6801 	case MPI2_RAID_VOL_STATE_FAILED:
6802 		_scsih_sas_volume_delete(ioc, handle);
6803 		break;
6804 
6805 	case MPI2_RAID_VOL_STATE_ONLINE:
6806 	case MPI2_RAID_VOL_STATE_DEGRADED:
6807 	case MPI2_RAID_VOL_STATE_OPTIMAL:
6808 
6809 		spin_lock_irqsave(&ioc->raid_device_lock, flags);
6810 		raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
6811 		spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6812 
6813 		if (raid_device)
6814 			break;
6815 
6816 		mpt3sas_config_get_volume_wwid(ioc, handle, &wwid);
6817 		if (!wwid) {
6818 			pr_err(MPT3SAS_FMT
6819 			    "failure at %s:%d/%s()!\n", ioc->name,
6820 			    __FILE__, __LINE__, __func__);
6821 			break;
6822 		}
6823 
6824 		raid_device = kzalloc(sizeof(struct _raid_device), GFP_KERNEL);
6825 		if (!raid_device) {
6826 			pr_err(MPT3SAS_FMT
6827 			    "failure at %s:%d/%s()!\n", ioc->name,
6828 			    __FILE__, __LINE__, __func__);
6829 			break;
6830 		}
6831 
6832 		raid_device->id = ioc->sas_id++;
6833 		raid_device->channel = RAID_CHANNEL;
6834 		raid_device->handle = handle;
6835 		raid_device->wwid = wwid;
6836 		_scsih_raid_device_add(ioc, raid_device);
6837 		rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
6838 		    raid_device->id, 0);
6839 		if (rc)
6840 			_scsih_raid_device_remove(ioc, raid_device);
6841 		break;
6842 
6843 	case MPI2_RAID_VOL_STATE_INITIALIZING:
6844 	default:
6845 		break;
6846 	}
6847 }
6848 
6849 /**
6850  * _scsih_sas_ir_physical_disk_event - PD event
6851  * @ioc: per adapter object
6852  * @fw_event: The fw_event_work object
6853  * Context: user.
6854  *
6855  * Return nothing.
6856  */
6857 static void
6858 _scsih_sas_ir_physical_disk_event(struct MPT3SAS_ADAPTER *ioc,
6859 	struct fw_event_work *fw_event)
6860 {
6861 	u16 handle, parent_handle;
6862 	u32 state;
6863 	struct _sas_device *sas_device;
6864 	Mpi2ConfigReply_t mpi_reply;
6865 	Mpi2SasDevicePage0_t sas_device_pg0;
6866 	u32 ioc_status;
6867 	Mpi2EventDataIrPhysicalDisk_t *event_data =
6868 		(Mpi2EventDataIrPhysicalDisk_t *) fw_event->event_data;
6869 	u64 sas_address;
6870 
6871 	if (ioc->shost_recovery)
6872 		return;
6873 
6874 	if (event_data->ReasonCode != MPI2_EVENT_IR_PHYSDISK_RC_STATE_CHANGED)
6875 		return;
6876 
6877 	handle = le16_to_cpu(event_data->PhysDiskDevHandle);
6878 	state = le32_to_cpu(event_data->NewValue);
6879 
6880 	if (!ioc->hide_ir_msg)
6881 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
6882 		    "%s: handle(0x%04x), old(0x%08x), new(0x%08x)\n",
6883 		    ioc->name, __func__,  handle,
6884 		    le32_to_cpu(event_data->PreviousValue), state));
6885 
6886 	switch (state) {
6887 	case MPI2_RAID_PD_STATE_ONLINE:
6888 	case MPI2_RAID_PD_STATE_DEGRADED:
6889 	case MPI2_RAID_PD_STATE_REBUILDING:
6890 	case MPI2_RAID_PD_STATE_OPTIMAL:
6891 	case MPI2_RAID_PD_STATE_HOT_SPARE:
6892 
6893 		if (!ioc->is_warpdrive)
6894 			set_bit(handle, ioc->pd_handles);
6895 
6896 		sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
6897 		if (sas_device) {
6898 			sas_device_put(sas_device);
6899 			return;
6900 		}
6901 
6902 		if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
6903 		    &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
6904 		    handle))) {
6905 			pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6906 			    ioc->name, __FILE__, __LINE__, __func__);
6907 			return;
6908 		}
6909 
6910 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
6911 		    MPI2_IOCSTATUS_MASK;
6912 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6913 			pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6914 			    ioc->name, __FILE__, __LINE__, __func__);
6915 			return;
6916 		}
6917 
6918 		parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
6919 		if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address))
6920 			mpt3sas_transport_update_links(ioc, sas_address, handle,
6921 			    sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
6922 
6923 		_scsih_add_device(ioc, handle, 0, 1);
6924 
6925 		break;
6926 
6927 	case MPI2_RAID_PD_STATE_OFFLINE:
6928 	case MPI2_RAID_PD_STATE_NOT_CONFIGURED:
6929 	case MPI2_RAID_PD_STATE_NOT_COMPATIBLE:
6930 	default:
6931 		break;
6932 	}
6933 }
6934 
6935 /**
6936  * _scsih_sas_ir_operation_status_event_debug - debug for IR op event
6937  * @ioc: per adapter object
6938  * @event_data: event data payload
6939  * Context: user.
6940  *
6941  * Return nothing.
6942  */
6943 static void
6944 _scsih_sas_ir_operation_status_event_debug(struct MPT3SAS_ADAPTER *ioc,
6945 	Mpi2EventDataIrOperationStatus_t *event_data)
6946 {
6947 	char *reason_str = NULL;
6948 
6949 	switch (event_data->RAIDOperation) {
6950 	case MPI2_EVENT_IR_RAIDOP_RESYNC:
6951 		reason_str = "resync";
6952 		break;
6953 	case MPI2_EVENT_IR_RAIDOP_ONLINE_CAP_EXPANSION:
6954 		reason_str = "online capacity expansion";
6955 		break;
6956 	case MPI2_EVENT_IR_RAIDOP_CONSISTENCY_CHECK:
6957 		reason_str = "consistency check";
6958 		break;
6959 	case MPI2_EVENT_IR_RAIDOP_BACKGROUND_INIT:
6960 		reason_str = "background init";
6961 		break;
6962 	case MPI2_EVENT_IR_RAIDOP_MAKE_DATA_CONSISTENT:
6963 		reason_str = "make data consistent";
6964 		break;
6965 	}
6966 
6967 	if (!reason_str)
6968 		return;
6969 
6970 	pr_info(MPT3SAS_FMT "raid operational status: (%s)" \
6971 	    "\thandle(0x%04x), percent complete(%d)\n",
6972 	    ioc->name, reason_str,
6973 	    le16_to_cpu(event_data->VolDevHandle),
6974 	    event_data->PercentComplete);
6975 }
6976 
6977 /**
6978  * _scsih_sas_ir_operation_status_event - handle RAID operation events
6979  * @ioc: per adapter object
6980  * @fw_event: The fw_event_work object
6981  * Context: user.
6982  *
6983  * Return nothing.
6984  */
6985 static void
6986 _scsih_sas_ir_operation_status_event(struct MPT3SAS_ADAPTER *ioc,
6987 	struct fw_event_work *fw_event)
6988 {
6989 	Mpi2EventDataIrOperationStatus_t *event_data =
6990 		(Mpi2EventDataIrOperationStatus_t *)
6991 		fw_event->event_data;
6992 	static struct _raid_device *raid_device;
6993 	unsigned long flags;
6994 	u16 handle;
6995 
6996 	if ((ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) &&
6997 	    (!ioc->hide_ir_msg))
6998 		_scsih_sas_ir_operation_status_event_debug(ioc,
6999 		     event_data);
7000 
7001 	/* code added for raid transport support */
7002 	if (event_data->RAIDOperation == MPI2_EVENT_IR_RAIDOP_RESYNC) {
7003 
7004 		spin_lock_irqsave(&ioc->raid_device_lock, flags);
7005 		handle = le16_to_cpu(event_data->VolDevHandle);
7006 		raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
7007 		if (raid_device)
7008 			raid_device->percent_complete =
7009 			    event_data->PercentComplete;
7010 		spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7011 	}
7012 }
7013 
7014 /**
7015  * _scsih_prep_device_scan - initialize parameters prior to device scan
7016  * @ioc: per adapter object
7017  *
7018  * Set the deleted flag prior to device scan.  If the device is found during
7019  * the scan, then we clear the deleted flag.
7020  */
7021 static void
7022 _scsih_prep_device_scan(struct MPT3SAS_ADAPTER *ioc)
7023 {
7024 	struct MPT3SAS_DEVICE *sas_device_priv_data;
7025 	struct scsi_device *sdev;
7026 
7027 	shost_for_each_device(sdev, ioc->shost) {
7028 		sas_device_priv_data = sdev->hostdata;
7029 		if (sas_device_priv_data && sas_device_priv_data->sas_target)
7030 			sas_device_priv_data->sas_target->deleted = 1;
7031 	}
7032 }
7033 
7034 /**
7035  * _scsih_mark_responding_sas_device - mark a sas_devices as responding
7036  * @ioc: per adapter object
7037  * @sas_device_pg0: SAS Device page 0
7038  *
7039  * After host reset, find out whether devices are still responding.
7040  * Used in _scsih_remove_unresponsive_sas_devices.
7041  *
7042  * Return nothing.
7043  */
7044 static void
7045 _scsih_mark_responding_sas_device(struct MPT3SAS_ADAPTER *ioc,
7046 Mpi2SasDevicePage0_t *sas_device_pg0)
7047 {
7048 	struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
7049 	struct scsi_target *starget;
7050 	struct _sas_device *sas_device;
7051 	unsigned long flags;
7052 
7053 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
7054 	list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
7055 		if ((sas_device->sas_address == sas_device_pg0->SASAddress) &&
7056 			(sas_device->slot == sas_device_pg0->Slot)) {
7057 			sas_device->responding = 1;
7058 			starget = sas_device->starget;
7059 			if (starget && starget->hostdata) {
7060 				sas_target_priv_data = starget->hostdata;
7061 				sas_target_priv_data->tm_busy = 0;
7062 				sas_target_priv_data->deleted = 0;
7063 			} else
7064 				sas_target_priv_data = NULL;
7065 			if (starget) {
7066 				starget_printk(KERN_INFO, starget,
7067 				    "handle(0x%04x), sas_addr(0x%016llx)\n",
7068 				    sas_device_pg0->DevHandle,
7069 				    (unsigned long long)
7070 				    sas_device->sas_address);
7071 
7072 				if (sas_device->enclosure_handle != 0)
7073 					starget_printk(KERN_INFO, starget,
7074 					 "enclosure logical id(0x%016llx),"
7075 					 " slot(%d)\n",
7076 					 (unsigned long long)
7077 					 sas_device->enclosure_logical_id,
7078 					 sas_device->slot);
7079 			}
7080 			if (sas_device_pg0->Flags &
7081 			      MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
7082 				sas_device->enclosure_level =
7083 				   sas_device_pg0->EnclosureLevel;
7084 				memcpy(&sas_device->connector_name[0],
7085 					&sas_device_pg0->ConnectorName[0], 4);
7086 			} else {
7087 				sas_device->enclosure_level = 0;
7088 				sas_device->connector_name[0] = '\0';
7089 			}
7090 
7091 			if (sas_device->handle == sas_device_pg0->DevHandle)
7092 				goto out;
7093 			pr_info("\thandle changed from(0x%04x)!!!\n",
7094 			    sas_device->handle);
7095 			sas_device->handle = sas_device_pg0->DevHandle;
7096 			if (sas_target_priv_data)
7097 				sas_target_priv_data->handle =
7098 					sas_device_pg0->DevHandle;
7099 			goto out;
7100 		}
7101 	}
7102  out:
7103 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
7104 }
7105 
7106 /**
7107  * _scsih_search_responding_sas_devices -
7108  * @ioc: per adapter object
7109  *
7110  * After host reset, find out whether devices are still responding.
7111  * If not remove.
7112  *
7113  * Return nothing.
7114  */
7115 static void
7116 _scsih_search_responding_sas_devices(struct MPT3SAS_ADAPTER *ioc)
7117 {
7118 	Mpi2SasDevicePage0_t sas_device_pg0;
7119 	Mpi2ConfigReply_t mpi_reply;
7120 	u16 ioc_status;
7121 	u16 handle;
7122 	u32 device_info;
7123 
7124 	pr_info(MPT3SAS_FMT "search for end-devices: start\n", ioc->name);
7125 
7126 	if (list_empty(&ioc->sas_device_list))
7127 		goto out;
7128 
7129 	handle = 0xFFFF;
7130 	while (!(mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7131 	    &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_GET_NEXT_HANDLE,
7132 	    handle))) {
7133 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7134 		    MPI2_IOCSTATUS_MASK;
7135 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7136 			break;
7137 		handle = sas_device_pg0.DevHandle =
7138 				le16_to_cpu(sas_device_pg0.DevHandle);
7139 		device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
7140 		if (!(_scsih_is_end_device(device_info)))
7141 			continue;
7142 		sas_device_pg0.SASAddress =
7143 				le64_to_cpu(sas_device_pg0.SASAddress);
7144 		sas_device_pg0.Slot = le16_to_cpu(sas_device_pg0.Slot);
7145 		sas_device_pg0.Flags = le16_to_cpu(sas_device_pg0.Flags);
7146 		_scsih_mark_responding_sas_device(ioc, &sas_device_pg0);
7147 	}
7148 
7149  out:
7150 	pr_info(MPT3SAS_FMT "search for end-devices: complete\n",
7151 	    ioc->name);
7152 }
7153 
7154 /**
7155  * _scsih_mark_responding_raid_device - mark a raid_device as responding
7156  * @ioc: per adapter object
7157  * @wwid: world wide identifier for raid volume
7158  * @handle: device handle
7159  *
7160  * After host reset, find out whether devices are still responding.
7161  * Used in _scsih_remove_unresponsive_raid_devices.
7162  *
7163  * Return nothing.
7164  */
7165 static void
7166 _scsih_mark_responding_raid_device(struct MPT3SAS_ADAPTER *ioc, u64 wwid,
7167 	u16 handle)
7168 {
7169 	struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
7170 	struct scsi_target *starget;
7171 	struct _raid_device *raid_device;
7172 	unsigned long flags;
7173 
7174 	spin_lock_irqsave(&ioc->raid_device_lock, flags);
7175 	list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
7176 		if (raid_device->wwid == wwid && raid_device->starget) {
7177 			starget = raid_device->starget;
7178 			if (starget && starget->hostdata) {
7179 				sas_target_priv_data = starget->hostdata;
7180 				sas_target_priv_data->deleted = 0;
7181 			} else
7182 				sas_target_priv_data = NULL;
7183 			raid_device->responding = 1;
7184 			spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7185 			starget_printk(KERN_INFO, raid_device->starget,
7186 			    "handle(0x%04x), wwid(0x%016llx)\n", handle,
7187 			    (unsigned long long)raid_device->wwid);
7188 
7189 			/*
7190 			 * WARPDRIVE: The handles of the PDs might have changed
7191 			 * across the host reset so re-initialize the
7192 			 * required data for Direct IO
7193 			 */
7194 			mpt3sas_init_warpdrive_properties(ioc, raid_device);
7195 			spin_lock_irqsave(&ioc->raid_device_lock, flags);
7196 			if (raid_device->handle == handle) {
7197 				spin_unlock_irqrestore(&ioc->raid_device_lock,
7198 				    flags);
7199 				return;
7200 			}
7201 			pr_info("\thandle changed from(0x%04x)!!!\n",
7202 			    raid_device->handle);
7203 			raid_device->handle = handle;
7204 			if (sas_target_priv_data)
7205 				sas_target_priv_data->handle = handle;
7206 			spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7207 			return;
7208 		}
7209 	}
7210 	spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7211 }
7212 
7213 /**
7214  * _scsih_search_responding_raid_devices -
7215  * @ioc: per adapter object
7216  *
7217  * After host reset, find out whether devices are still responding.
7218  * If not remove.
7219  *
7220  * Return nothing.
7221  */
7222 static void
7223 _scsih_search_responding_raid_devices(struct MPT3SAS_ADAPTER *ioc)
7224 {
7225 	Mpi2RaidVolPage1_t volume_pg1;
7226 	Mpi2RaidVolPage0_t volume_pg0;
7227 	Mpi2RaidPhysDiskPage0_t pd_pg0;
7228 	Mpi2ConfigReply_t mpi_reply;
7229 	u16 ioc_status;
7230 	u16 handle;
7231 	u8 phys_disk_num;
7232 
7233 	if (!ioc->ir_firmware)
7234 		return;
7235 
7236 	pr_info(MPT3SAS_FMT "search for raid volumes: start\n",
7237 	    ioc->name);
7238 
7239 	if (list_empty(&ioc->raid_device_list))
7240 		goto out;
7241 
7242 	handle = 0xFFFF;
7243 	while (!(mpt3sas_config_get_raid_volume_pg1(ioc, &mpi_reply,
7244 	    &volume_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
7245 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7246 		    MPI2_IOCSTATUS_MASK;
7247 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7248 			break;
7249 		handle = le16_to_cpu(volume_pg1.DevHandle);
7250 
7251 		if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply,
7252 		    &volume_pg0, MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
7253 		     sizeof(Mpi2RaidVolPage0_t)))
7254 			continue;
7255 
7256 		if (volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_OPTIMAL ||
7257 		    volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_ONLINE ||
7258 		    volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_DEGRADED)
7259 			_scsih_mark_responding_raid_device(ioc,
7260 			    le64_to_cpu(volume_pg1.WWID), handle);
7261 	}
7262 
7263 	/* refresh the pd_handles */
7264 	if (!ioc->is_warpdrive) {
7265 		phys_disk_num = 0xFF;
7266 		memset(ioc->pd_handles, 0, ioc->pd_handles_sz);
7267 		while (!(mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
7268 		    &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_GET_NEXT_PHYSDISKNUM,
7269 		    phys_disk_num))) {
7270 			ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7271 			    MPI2_IOCSTATUS_MASK;
7272 			if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7273 				break;
7274 			phys_disk_num = pd_pg0.PhysDiskNum;
7275 			handle = le16_to_cpu(pd_pg0.DevHandle);
7276 			set_bit(handle, ioc->pd_handles);
7277 		}
7278 	}
7279  out:
7280 	pr_info(MPT3SAS_FMT "search for responding raid volumes: complete\n",
7281 		ioc->name);
7282 }
7283 
7284 /**
7285  * _scsih_mark_responding_expander - mark a expander as responding
7286  * @ioc: per adapter object
7287  * @sas_address: sas address
7288  * @handle:
7289  *
7290  * After host reset, find out whether devices are still responding.
7291  * Used in _scsih_remove_unresponsive_expanders.
7292  *
7293  * Return nothing.
7294  */
7295 static void
7296 _scsih_mark_responding_expander(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
7297 	u16 handle)
7298 {
7299 	struct _sas_node *sas_expander;
7300 	unsigned long flags;
7301 	int i;
7302 
7303 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
7304 	list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
7305 		if (sas_expander->sas_address != sas_address)
7306 			continue;
7307 		sas_expander->responding = 1;
7308 		if (sas_expander->handle == handle)
7309 			goto out;
7310 		pr_info("\texpander(0x%016llx): handle changed" \
7311 		    " from(0x%04x) to (0x%04x)!!!\n",
7312 		    (unsigned long long)sas_expander->sas_address,
7313 		    sas_expander->handle, handle);
7314 		sas_expander->handle = handle;
7315 		for (i = 0 ; i < sas_expander->num_phys ; i++)
7316 			sas_expander->phy[i].handle = handle;
7317 		goto out;
7318 	}
7319  out:
7320 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7321 }
7322 
7323 /**
7324  * _scsih_search_responding_expanders -
7325  * @ioc: per adapter object
7326  *
7327  * After host reset, find out whether devices are still responding.
7328  * If not remove.
7329  *
7330  * Return nothing.
7331  */
7332 static void
7333 _scsih_search_responding_expanders(struct MPT3SAS_ADAPTER *ioc)
7334 {
7335 	Mpi2ExpanderPage0_t expander_pg0;
7336 	Mpi2ConfigReply_t mpi_reply;
7337 	u16 ioc_status;
7338 	u64 sas_address;
7339 	u16 handle;
7340 
7341 	pr_info(MPT3SAS_FMT "search for expanders: start\n", ioc->name);
7342 
7343 	if (list_empty(&ioc->sas_expander_list))
7344 		goto out;
7345 
7346 	handle = 0xFFFF;
7347 	while (!(mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
7348 	    MPI2_SAS_EXPAND_PGAD_FORM_GET_NEXT_HNDL, handle))) {
7349 
7350 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7351 		    MPI2_IOCSTATUS_MASK;
7352 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7353 			break;
7354 
7355 		handle = le16_to_cpu(expander_pg0.DevHandle);
7356 		sas_address = le64_to_cpu(expander_pg0.SASAddress);
7357 		pr_info("\texpander present: handle(0x%04x), sas_addr(0x%016llx)\n",
7358 			handle,
7359 		    (unsigned long long)sas_address);
7360 		_scsih_mark_responding_expander(ioc, sas_address, handle);
7361 	}
7362 
7363  out:
7364 	pr_info(MPT3SAS_FMT "search for expanders: complete\n", ioc->name);
7365 }
7366 
7367 /**
7368  * _scsih_remove_unresponding_sas_devices - removing unresponding devices
7369  * @ioc: per adapter object
7370  *
7371  * Return nothing.
7372  */
7373 static void
7374 _scsih_remove_unresponding_sas_devices(struct MPT3SAS_ADAPTER *ioc)
7375 {
7376 	struct _sas_device *sas_device, *sas_device_next;
7377 	struct _sas_node *sas_expander, *sas_expander_next;
7378 	struct _raid_device *raid_device, *raid_device_next;
7379 	struct list_head tmp_list;
7380 	unsigned long flags;
7381 	LIST_HEAD(head);
7382 
7383 	pr_info(MPT3SAS_FMT "removing unresponding devices: start\n",
7384 	    ioc->name);
7385 
7386 	/* removing unresponding end devices */
7387 	pr_info(MPT3SAS_FMT "removing unresponding devices: end-devices\n",
7388 	    ioc->name);
7389 	/*
7390 	 * Iterate, pulling off devices marked as non-responding. We become the
7391 	 * owner for the reference the list had on any object we prune.
7392 	 */
7393 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
7394 	list_for_each_entry_safe(sas_device, sas_device_next,
7395 	    &ioc->sas_device_list, list) {
7396 		if (!sas_device->responding)
7397 			list_move_tail(&sas_device->list, &head);
7398 		else
7399 			sas_device->responding = 0;
7400 	}
7401 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
7402 
7403 	/*
7404 	 * Now, uninitialize and remove the unresponding devices we pruned.
7405 	 */
7406 	list_for_each_entry_safe(sas_device, sas_device_next, &head, list) {
7407 		_scsih_remove_device(ioc, sas_device);
7408 		list_del_init(&sas_device->list);
7409 		sas_device_put(sas_device);
7410 	}
7411 
7412 	/* removing unresponding volumes */
7413 	if (ioc->ir_firmware) {
7414 		pr_info(MPT3SAS_FMT "removing unresponding devices: volumes\n",
7415 			ioc->name);
7416 		list_for_each_entry_safe(raid_device, raid_device_next,
7417 		    &ioc->raid_device_list, list) {
7418 			if (!raid_device->responding)
7419 				_scsih_sas_volume_delete(ioc,
7420 				    raid_device->handle);
7421 			else
7422 				raid_device->responding = 0;
7423 		}
7424 	}
7425 
7426 	/* removing unresponding expanders */
7427 	pr_info(MPT3SAS_FMT "removing unresponding devices: expanders\n",
7428 	    ioc->name);
7429 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
7430 	INIT_LIST_HEAD(&tmp_list);
7431 	list_for_each_entry_safe(sas_expander, sas_expander_next,
7432 	    &ioc->sas_expander_list, list) {
7433 		if (!sas_expander->responding)
7434 			list_move_tail(&sas_expander->list, &tmp_list);
7435 		else
7436 			sas_expander->responding = 0;
7437 	}
7438 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7439 	list_for_each_entry_safe(sas_expander, sas_expander_next, &tmp_list,
7440 	    list) {
7441 		list_del(&sas_expander->list);
7442 		_scsih_expander_node_remove(ioc, sas_expander);
7443 	}
7444 
7445 	pr_info(MPT3SAS_FMT "removing unresponding devices: complete\n",
7446 	    ioc->name);
7447 
7448 	/* unblock devices */
7449 	_scsih_ublock_io_all_device(ioc);
7450 }
7451 
7452 static void
7453 _scsih_refresh_expander_links(struct MPT3SAS_ADAPTER *ioc,
7454 	struct _sas_node *sas_expander, u16 handle)
7455 {
7456 	Mpi2ExpanderPage1_t expander_pg1;
7457 	Mpi2ConfigReply_t mpi_reply;
7458 	int i;
7459 
7460 	for (i = 0 ; i < sas_expander->num_phys ; i++) {
7461 		if ((mpt3sas_config_get_expander_pg1(ioc, &mpi_reply,
7462 		    &expander_pg1, i, handle))) {
7463 			pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
7464 			    ioc->name, __FILE__, __LINE__, __func__);
7465 			return;
7466 		}
7467 
7468 		mpt3sas_transport_update_links(ioc, sas_expander->sas_address,
7469 		    le16_to_cpu(expander_pg1.AttachedDevHandle), i,
7470 		    expander_pg1.NegotiatedLinkRate >> 4);
7471 	}
7472 }
7473 
7474 /**
7475  * _scsih_scan_for_devices_after_reset - scan for devices after host reset
7476  * @ioc: per adapter object
7477  *
7478  * Return nothing.
7479  */
7480 static void
7481 _scsih_scan_for_devices_after_reset(struct MPT3SAS_ADAPTER *ioc)
7482 {
7483 	Mpi2ExpanderPage0_t expander_pg0;
7484 	Mpi2SasDevicePage0_t sas_device_pg0;
7485 	Mpi2RaidVolPage1_t volume_pg1;
7486 	Mpi2RaidVolPage0_t volume_pg0;
7487 	Mpi2RaidPhysDiskPage0_t pd_pg0;
7488 	Mpi2EventIrConfigElement_t element;
7489 	Mpi2ConfigReply_t mpi_reply;
7490 	u8 phys_disk_num;
7491 	u16 ioc_status;
7492 	u16 handle, parent_handle;
7493 	u64 sas_address;
7494 	struct _sas_device *sas_device;
7495 	struct _sas_node *expander_device;
7496 	static struct _raid_device *raid_device;
7497 	u8 retry_count;
7498 	unsigned long flags;
7499 
7500 	pr_info(MPT3SAS_FMT "scan devices: start\n", ioc->name);
7501 
7502 	_scsih_sas_host_refresh(ioc);
7503 
7504 	pr_info(MPT3SAS_FMT "\tscan devices: expanders start\n", ioc->name);
7505 
7506 	/* expanders */
7507 	handle = 0xFFFF;
7508 	while (!(mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
7509 	    MPI2_SAS_EXPAND_PGAD_FORM_GET_NEXT_HNDL, handle))) {
7510 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7511 		    MPI2_IOCSTATUS_MASK;
7512 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7513 			pr_info(MPT3SAS_FMT "\tbreak from expander scan: " \
7514 			    "ioc_status(0x%04x), loginfo(0x%08x)\n",
7515 			    ioc->name, ioc_status,
7516 			    le32_to_cpu(mpi_reply.IOCLogInfo));
7517 			break;
7518 		}
7519 		handle = le16_to_cpu(expander_pg0.DevHandle);
7520 		spin_lock_irqsave(&ioc->sas_node_lock, flags);
7521 		expander_device = mpt3sas_scsih_expander_find_by_sas_address(
7522 		    ioc, le64_to_cpu(expander_pg0.SASAddress));
7523 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7524 		if (expander_device)
7525 			_scsih_refresh_expander_links(ioc, expander_device,
7526 			    handle);
7527 		else {
7528 			pr_info(MPT3SAS_FMT "\tBEFORE adding expander: " \
7529 			    "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7530 			    handle, (unsigned long long)
7531 			    le64_to_cpu(expander_pg0.SASAddress));
7532 			_scsih_expander_add(ioc, handle);
7533 			pr_info(MPT3SAS_FMT "\tAFTER adding expander: " \
7534 			    "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7535 			    handle, (unsigned long long)
7536 			    le64_to_cpu(expander_pg0.SASAddress));
7537 		}
7538 	}
7539 
7540 	pr_info(MPT3SAS_FMT "\tscan devices: expanders complete\n",
7541 	    ioc->name);
7542 
7543 	if (!ioc->ir_firmware)
7544 		goto skip_to_sas;
7545 
7546 	pr_info(MPT3SAS_FMT "\tscan devices: phys disk start\n", ioc->name);
7547 
7548 	/* phys disk */
7549 	phys_disk_num = 0xFF;
7550 	while (!(mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
7551 	    &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_GET_NEXT_PHYSDISKNUM,
7552 	    phys_disk_num))) {
7553 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7554 		    MPI2_IOCSTATUS_MASK;
7555 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7556 			pr_info(MPT3SAS_FMT "\tbreak from phys disk scan: "\
7557 			    "ioc_status(0x%04x), loginfo(0x%08x)\n",
7558 			    ioc->name, ioc_status,
7559 			    le32_to_cpu(mpi_reply.IOCLogInfo));
7560 			break;
7561 		}
7562 		phys_disk_num = pd_pg0.PhysDiskNum;
7563 		handle = le16_to_cpu(pd_pg0.DevHandle);
7564 		sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
7565 		if (sas_device) {
7566 			sas_device_put(sas_device);
7567 			continue;
7568 		}
7569 		if (mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7570 		    &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
7571 		    handle) != 0)
7572 			continue;
7573 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7574 		    MPI2_IOCSTATUS_MASK;
7575 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7576 			pr_info(MPT3SAS_FMT "\tbreak from phys disk scan " \
7577 			    "ioc_status(0x%04x), loginfo(0x%08x)\n",
7578 			    ioc->name, ioc_status,
7579 			    le32_to_cpu(mpi_reply.IOCLogInfo));
7580 			break;
7581 		}
7582 		parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
7583 		if (!_scsih_get_sas_address(ioc, parent_handle,
7584 		    &sas_address)) {
7585 			pr_info(MPT3SAS_FMT "\tBEFORE adding phys disk: " \
7586 			    " handle (0x%04x), sas_addr(0x%016llx)\n",
7587 			    ioc->name, handle, (unsigned long long)
7588 			    le64_to_cpu(sas_device_pg0.SASAddress));
7589 			mpt3sas_transport_update_links(ioc, sas_address,
7590 			    handle, sas_device_pg0.PhyNum,
7591 			    MPI2_SAS_NEG_LINK_RATE_1_5);
7592 			set_bit(handle, ioc->pd_handles);
7593 			retry_count = 0;
7594 			/* This will retry adding the end device.
7595 			 * _scsih_add_device() will decide on retries and
7596 			 * return "1" when it should be retried
7597 			 */
7598 			while (_scsih_add_device(ioc, handle, retry_count++,
7599 			    1)) {
7600 				ssleep(1);
7601 			}
7602 			pr_info(MPT3SAS_FMT "\tAFTER adding phys disk: " \
7603 			    " handle (0x%04x), sas_addr(0x%016llx)\n",
7604 			    ioc->name, handle, (unsigned long long)
7605 			    le64_to_cpu(sas_device_pg0.SASAddress));
7606 		}
7607 	}
7608 
7609 	pr_info(MPT3SAS_FMT "\tscan devices: phys disk complete\n",
7610 	    ioc->name);
7611 
7612 	pr_info(MPT3SAS_FMT "\tscan devices: volumes start\n", ioc->name);
7613 
7614 	/* volumes */
7615 	handle = 0xFFFF;
7616 	while (!(mpt3sas_config_get_raid_volume_pg1(ioc, &mpi_reply,
7617 	    &volume_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
7618 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7619 		    MPI2_IOCSTATUS_MASK;
7620 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7621 			pr_info(MPT3SAS_FMT "\tbreak from volume scan: " \
7622 			    "ioc_status(0x%04x), loginfo(0x%08x)\n",
7623 			    ioc->name, ioc_status,
7624 			    le32_to_cpu(mpi_reply.IOCLogInfo));
7625 			break;
7626 		}
7627 		handle = le16_to_cpu(volume_pg1.DevHandle);
7628 		spin_lock_irqsave(&ioc->raid_device_lock, flags);
7629 		raid_device = _scsih_raid_device_find_by_wwid(ioc,
7630 		    le64_to_cpu(volume_pg1.WWID));
7631 		spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7632 		if (raid_device)
7633 			continue;
7634 		if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply,
7635 		    &volume_pg0, MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
7636 		     sizeof(Mpi2RaidVolPage0_t)))
7637 			continue;
7638 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7639 		    MPI2_IOCSTATUS_MASK;
7640 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7641 			pr_info(MPT3SAS_FMT "\tbreak from volume scan: " \
7642 			    "ioc_status(0x%04x), loginfo(0x%08x)\n",
7643 			    ioc->name, ioc_status,
7644 			    le32_to_cpu(mpi_reply.IOCLogInfo));
7645 			break;
7646 		}
7647 		if (volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_OPTIMAL ||
7648 		    volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_ONLINE ||
7649 		    volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_DEGRADED) {
7650 			memset(&element, 0, sizeof(Mpi2EventIrConfigElement_t));
7651 			element.ReasonCode = MPI2_EVENT_IR_CHANGE_RC_ADDED;
7652 			element.VolDevHandle = volume_pg1.DevHandle;
7653 			pr_info(MPT3SAS_FMT
7654 				"\tBEFORE adding volume: handle (0x%04x)\n",
7655 				ioc->name, volume_pg1.DevHandle);
7656 			_scsih_sas_volume_add(ioc, &element);
7657 			pr_info(MPT3SAS_FMT
7658 				"\tAFTER adding volume: handle (0x%04x)\n",
7659 				ioc->name, volume_pg1.DevHandle);
7660 		}
7661 	}
7662 
7663 	pr_info(MPT3SAS_FMT "\tscan devices: volumes complete\n",
7664 	    ioc->name);
7665 
7666  skip_to_sas:
7667 
7668 	pr_info(MPT3SAS_FMT "\tscan devices: end devices start\n",
7669 	    ioc->name);
7670 
7671 	/* sas devices */
7672 	handle = 0xFFFF;
7673 	while (!(mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7674 	    &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_GET_NEXT_HANDLE,
7675 	    handle))) {
7676 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7677 		    MPI2_IOCSTATUS_MASK;
7678 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7679 			pr_info(MPT3SAS_FMT "\tbreak from end device scan:"\
7680 			    " ioc_status(0x%04x), loginfo(0x%08x)\n",
7681 			    ioc->name, ioc_status,
7682 			    le32_to_cpu(mpi_reply.IOCLogInfo));
7683 			break;
7684 		}
7685 		handle = le16_to_cpu(sas_device_pg0.DevHandle);
7686 		if (!(_scsih_is_end_device(
7687 		    le32_to_cpu(sas_device_pg0.DeviceInfo))))
7688 			continue;
7689 		sas_device = mpt3sas_get_sdev_by_addr(ioc,
7690 		    le64_to_cpu(sas_device_pg0.SASAddress));
7691 		if (sas_device) {
7692 			sas_device_put(sas_device);
7693 			continue;
7694 		}
7695 		parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
7696 		if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address)) {
7697 			pr_info(MPT3SAS_FMT "\tBEFORE adding end device: " \
7698 			    "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7699 			    handle, (unsigned long long)
7700 			    le64_to_cpu(sas_device_pg0.SASAddress));
7701 			mpt3sas_transport_update_links(ioc, sas_address, handle,
7702 			    sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
7703 			retry_count = 0;
7704 			/* This will retry adding the end device.
7705 			 * _scsih_add_device() will decide on retries and
7706 			 * return "1" when it should be retried
7707 			 */
7708 			while (_scsih_add_device(ioc, handle, retry_count++,
7709 			    0)) {
7710 				ssleep(1);
7711 			}
7712 			pr_info(MPT3SAS_FMT "\tAFTER adding end device: " \
7713 			    "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7714 			    handle, (unsigned long long)
7715 			    le64_to_cpu(sas_device_pg0.SASAddress));
7716 		}
7717 	}
7718 	pr_info(MPT3SAS_FMT "\tscan devices: end devices complete\n",
7719 	    ioc->name);
7720 
7721 	pr_info(MPT3SAS_FMT "scan devices: complete\n", ioc->name);
7722 }
7723 /**
7724  * mpt3sas_scsih_reset_handler - reset callback handler (for scsih)
7725  * @ioc: per adapter object
7726  * @reset_phase: phase
7727  *
7728  * The handler for doing any required cleanup or initialization.
7729  *
7730  * The reset phase can be MPT3_IOC_PRE_RESET, MPT3_IOC_AFTER_RESET,
7731  * MPT3_IOC_DONE_RESET
7732  *
7733  * Return nothing.
7734  */
7735 void
7736 mpt3sas_scsih_reset_handler(struct MPT3SAS_ADAPTER *ioc, int reset_phase)
7737 {
7738 	switch (reset_phase) {
7739 	case MPT3_IOC_PRE_RESET:
7740 		dtmprintk(ioc, pr_info(MPT3SAS_FMT
7741 			"%s: MPT3_IOC_PRE_RESET\n", ioc->name, __func__));
7742 		break;
7743 	case MPT3_IOC_AFTER_RESET:
7744 		dtmprintk(ioc, pr_info(MPT3SAS_FMT
7745 			"%s: MPT3_IOC_AFTER_RESET\n", ioc->name, __func__));
7746 		if (ioc->scsih_cmds.status & MPT3_CMD_PENDING) {
7747 			ioc->scsih_cmds.status |= MPT3_CMD_RESET;
7748 			mpt3sas_base_free_smid(ioc, ioc->scsih_cmds.smid);
7749 			complete(&ioc->scsih_cmds.done);
7750 		}
7751 		if (ioc->tm_cmds.status & MPT3_CMD_PENDING) {
7752 			ioc->tm_cmds.status |= MPT3_CMD_RESET;
7753 			mpt3sas_base_free_smid(ioc, ioc->tm_cmds.smid);
7754 			complete(&ioc->tm_cmds.done);
7755 		}
7756 
7757 		memset(ioc->pend_os_device_add, 0, ioc->pend_os_device_add_sz);
7758 		memset(ioc->device_remove_in_progress, 0,
7759 		       ioc->device_remove_in_progress_sz);
7760 		_scsih_fw_event_cleanup_queue(ioc);
7761 		_scsih_flush_running_cmds(ioc);
7762 		break;
7763 	case MPT3_IOC_DONE_RESET:
7764 		dtmprintk(ioc, pr_info(MPT3SAS_FMT
7765 			"%s: MPT3_IOC_DONE_RESET\n", ioc->name, __func__));
7766 		if ((!ioc->is_driver_loading) && !(disable_discovery > 0 &&
7767 		    !ioc->sas_hba.num_phys)) {
7768 			_scsih_prep_device_scan(ioc);
7769 			_scsih_search_responding_sas_devices(ioc);
7770 			_scsih_search_responding_raid_devices(ioc);
7771 			_scsih_search_responding_expanders(ioc);
7772 			_scsih_error_recovery_delete_devices(ioc);
7773 		}
7774 		break;
7775 	}
7776 }
7777 
7778 /**
7779  * _mpt3sas_fw_work - delayed task for processing firmware events
7780  * @ioc: per adapter object
7781  * @fw_event: The fw_event_work object
7782  * Context: user.
7783  *
7784  * Return nothing.
7785  */
7786 static void
7787 _mpt3sas_fw_work(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work *fw_event)
7788 {
7789 	_scsih_fw_event_del_from_list(ioc, fw_event);
7790 
7791 	/* the queue is being flushed so ignore this event */
7792 	if (ioc->remove_host || ioc->pci_error_recovery) {
7793 		fw_event_work_put(fw_event);
7794 		return;
7795 	}
7796 
7797 	switch (fw_event->event) {
7798 	case MPT3SAS_PROCESS_TRIGGER_DIAG:
7799 		mpt3sas_process_trigger_data(ioc,
7800 			(struct SL_WH_TRIGGERS_EVENT_DATA_T *)
7801 			fw_event->event_data);
7802 		break;
7803 	case MPT3SAS_REMOVE_UNRESPONDING_DEVICES:
7804 		while (scsi_host_in_recovery(ioc->shost) ||
7805 					 ioc->shost_recovery) {
7806 			/*
7807 			 * If we're unloading, bail. Otherwise, this can become
7808 			 * an infinite loop.
7809 			 */
7810 			if (ioc->remove_host)
7811 				goto out;
7812 			ssleep(1);
7813 		}
7814 		_scsih_remove_unresponding_sas_devices(ioc);
7815 		_scsih_scan_for_devices_after_reset(ioc);
7816 		break;
7817 	case MPT3SAS_PORT_ENABLE_COMPLETE:
7818 		ioc->start_scan = 0;
7819 	if (missing_delay[0] != -1 && missing_delay[1] != -1)
7820 			mpt3sas_base_update_missing_delay(ioc, missing_delay[0],
7821 			    missing_delay[1]);
7822 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
7823 			"port enable: complete from worker thread\n",
7824 			ioc->name));
7825 		break;
7826 	case MPT3SAS_TURN_ON_PFA_LED:
7827 		_scsih_turn_on_pfa_led(ioc, fw_event->device_handle);
7828 		break;
7829 	case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
7830 		_scsih_sas_topology_change_event(ioc, fw_event);
7831 		break;
7832 	case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
7833 		_scsih_sas_device_status_change_event(ioc, fw_event);
7834 		break;
7835 	case MPI2_EVENT_SAS_DISCOVERY:
7836 		_scsih_sas_discovery_event(ioc, fw_event);
7837 		break;
7838 	case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
7839 		_scsih_sas_broadcast_primitive_event(ioc, fw_event);
7840 		break;
7841 	case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
7842 		_scsih_sas_enclosure_dev_status_change_event(ioc,
7843 		    fw_event);
7844 		break;
7845 	case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
7846 		_scsih_sas_ir_config_change_event(ioc, fw_event);
7847 		break;
7848 	case MPI2_EVENT_IR_VOLUME:
7849 		_scsih_sas_ir_volume_event(ioc, fw_event);
7850 		break;
7851 	case MPI2_EVENT_IR_PHYSICAL_DISK:
7852 		_scsih_sas_ir_physical_disk_event(ioc, fw_event);
7853 		break;
7854 	case MPI2_EVENT_IR_OPERATION_STATUS:
7855 		_scsih_sas_ir_operation_status_event(ioc, fw_event);
7856 		break;
7857 	}
7858 out:
7859 	fw_event_work_put(fw_event);
7860 }
7861 
7862 /**
7863  * _firmware_event_work
7864  * @ioc: per adapter object
7865  * @work: The fw_event_work object
7866  * Context: user.
7867  *
7868  * wrappers for the work thread handling firmware events
7869  *
7870  * Return nothing.
7871  */
7872 
7873 static void
7874 _firmware_event_work(struct work_struct *work)
7875 {
7876 	struct fw_event_work *fw_event = container_of(work,
7877 	    struct fw_event_work, work);
7878 
7879 	_mpt3sas_fw_work(fw_event->ioc, fw_event);
7880 }
7881 
7882 /**
7883  * mpt3sas_scsih_event_callback - firmware event handler (called at ISR time)
7884  * @ioc: per adapter object
7885  * @msix_index: MSIX table index supplied by the OS
7886  * @reply: reply message frame(lower 32bit addr)
7887  * Context: interrupt.
7888  *
7889  * This function merely adds a new work task into ioc->firmware_event_thread.
7890  * The tasks are worked from _firmware_event_work in user context.
7891  *
7892  * Return 1 meaning mf should be freed from _base_interrupt
7893  *        0 means the mf is freed from this function.
7894  */
7895 u8
7896 mpt3sas_scsih_event_callback(struct MPT3SAS_ADAPTER *ioc, u8 msix_index,
7897 	u32 reply)
7898 {
7899 	struct fw_event_work *fw_event;
7900 	Mpi2EventNotificationReply_t *mpi_reply;
7901 	u16 event;
7902 	u16 sz;
7903 	Mpi26EventDataActiveCableExcept_t *ActiveCableEventData;
7904 
7905 	/* events turned off due to host reset or driver unloading */
7906 	if (ioc->remove_host || ioc->pci_error_recovery)
7907 		return 1;
7908 
7909 	mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
7910 
7911 	if (unlikely(!mpi_reply)) {
7912 		pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
7913 		    ioc->name, __FILE__, __LINE__, __func__);
7914 		return 1;
7915 	}
7916 
7917 	event = le16_to_cpu(mpi_reply->Event);
7918 
7919 	if (event != MPI2_EVENT_LOG_ENTRY_ADDED)
7920 		mpt3sas_trigger_event(ioc, event, 0);
7921 
7922 	switch (event) {
7923 	/* handle these */
7924 	case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
7925 	{
7926 		Mpi2EventDataSasBroadcastPrimitive_t *baen_data =
7927 		    (Mpi2EventDataSasBroadcastPrimitive_t *)
7928 		    mpi_reply->EventData;
7929 
7930 		if (baen_data->Primitive !=
7931 		    MPI2_EVENT_PRIMITIVE_ASYNCHRONOUS_EVENT)
7932 			return 1;
7933 
7934 		if (ioc->broadcast_aen_busy) {
7935 			ioc->broadcast_aen_pending++;
7936 			return 1;
7937 		} else
7938 			ioc->broadcast_aen_busy = 1;
7939 		break;
7940 	}
7941 
7942 	case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
7943 		_scsih_check_topo_delete_events(ioc,
7944 		    (Mpi2EventDataSasTopologyChangeList_t *)
7945 		    mpi_reply->EventData);
7946 		break;
7947 	case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
7948 		_scsih_check_ir_config_unhide_events(ioc,
7949 		    (Mpi2EventDataIrConfigChangeList_t *)
7950 		    mpi_reply->EventData);
7951 		break;
7952 	case MPI2_EVENT_IR_VOLUME:
7953 		_scsih_check_volume_delete_events(ioc,
7954 		    (Mpi2EventDataIrVolume_t *)
7955 		    mpi_reply->EventData);
7956 		break;
7957 	case MPI2_EVENT_LOG_ENTRY_ADDED:
7958 	{
7959 		Mpi2EventDataLogEntryAdded_t *log_entry;
7960 		u32 *log_code;
7961 
7962 		if (!ioc->is_warpdrive)
7963 			break;
7964 
7965 		log_entry = (Mpi2EventDataLogEntryAdded_t *)
7966 		    mpi_reply->EventData;
7967 		log_code = (u32 *)log_entry->LogData;
7968 
7969 		if (le16_to_cpu(log_entry->LogEntryQualifier)
7970 		    != MPT2_WARPDRIVE_LOGENTRY)
7971 			break;
7972 
7973 		switch (le32_to_cpu(*log_code)) {
7974 		case MPT2_WARPDRIVE_LC_SSDT:
7975 			pr_warn(MPT3SAS_FMT "WarpDrive Warning: "
7976 			    "IO Throttling has occurred in the WarpDrive "
7977 			    "subsystem. Check WarpDrive documentation for "
7978 			    "additional details.\n", ioc->name);
7979 			break;
7980 		case MPT2_WARPDRIVE_LC_SSDLW:
7981 			pr_warn(MPT3SAS_FMT "WarpDrive Warning: "
7982 			    "Program/Erase Cycles for the WarpDrive subsystem "
7983 			    "in degraded range. Check WarpDrive documentation "
7984 			    "for additional details.\n", ioc->name);
7985 			break;
7986 		case MPT2_WARPDRIVE_LC_SSDLF:
7987 			pr_err(MPT3SAS_FMT "WarpDrive Fatal Error: "
7988 			    "There are no Program/Erase Cycles for the "
7989 			    "WarpDrive subsystem. The storage device will be "
7990 			    "in read-only mode. Check WarpDrive documentation "
7991 			    "for additional details.\n", ioc->name);
7992 			break;
7993 		case MPT2_WARPDRIVE_LC_BRMF:
7994 			pr_err(MPT3SAS_FMT "WarpDrive Fatal Error: "
7995 			    "The Backup Rail Monitor has failed on the "
7996 			    "WarpDrive subsystem. Check WarpDrive "
7997 			    "documentation for additional details.\n",
7998 			    ioc->name);
7999 			break;
8000 		}
8001 
8002 		break;
8003 	}
8004 	case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
8005 	case MPI2_EVENT_IR_OPERATION_STATUS:
8006 	case MPI2_EVENT_SAS_DISCOVERY:
8007 	case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
8008 	case MPI2_EVENT_IR_PHYSICAL_DISK:
8009 		break;
8010 
8011 	case MPI2_EVENT_TEMP_THRESHOLD:
8012 		_scsih_temp_threshold_events(ioc,
8013 			(Mpi2EventDataTemperature_t *)
8014 			mpi_reply->EventData);
8015 		break;
8016 	case MPI2_EVENT_ACTIVE_CABLE_EXCEPTION:
8017 		ActiveCableEventData =
8018 		    (Mpi26EventDataActiveCableExcept_t *) mpi_reply->EventData;
8019 		if (ActiveCableEventData->ReasonCode ==
8020 				MPI26_EVENT_ACTIVE_CABLE_INSUFFICIENT_POWER) {
8021 			pr_info(MPT3SAS_FMT "Currently an active cable with ReceptacleID %d",
8022 			    ioc->name, ActiveCableEventData->ReceptacleID);
8023 			pr_info("cannot be powered and devices connected to this active cable");
8024 			pr_info("will not be seen. This active cable");
8025 			pr_info("requires %d mW of power",
8026 			    ActiveCableEventData->ActiveCablePowerRequirement);
8027 		}
8028 		break;
8029 
8030 	default: /* ignore the rest */
8031 		return 1;
8032 	}
8033 
8034 	sz = le16_to_cpu(mpi_reply->EventDataLength) * 4;
8035 	fw_event = alloc_fw_event_work(sz);
8036 	if (!fw_event) {
8037 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8038 		    ioc->name, __FILE__, __LINE__, __func__);
8039 		return 1;
8040 	}
8041 
8042 	memcpy(fw_event->event_data, mpi_reply->EventData, sz);
8043 	fw_event->ioc = ioc;
8044 	fw_event->VF_ID = mpi_reply->VF_ID;
8045 	fw_event->VP_ID = mpi_reply->VP_ID;
8046 	fw_event->event = event;
8047 	_scsih_fw_event_add(ioc, fw_event);
8048 	fw_event_work_put(fw_event);
8049 	return 1;
8050 }
8051 
8052 /**
8053  * _scsih_expander_node_remove - removing expander device from list.
8054  * @ioc: per adapter object
8055  * @sas_expander: the sas_device object
8056  * Context: Calling function should acquire ioc->sas_node_lock.
8057  *
8058  * Removing object and freeing associated memory from the
8059  * ioc->sas_expander_list.
8060  *
8061  * Return nothing.
8062  */
8063 static void
8064 _scsih_expander_node_remove(struct MPT3SAS_ADAPTER *ioc,
8065 	struct _sas_node *sas_expander)
8066 {
8067 	struct _sas_port *mpt3sas_port, *next;
8068 
8069 	/* remove sibling ports attached to this expander */
8070 	list_for_each_entry_safe(mpt3sas_port, next,
8071 	   &sas_expander->sas_port_list, port_list) {
8072 		if (ioc->shost_recovery)
8073 			return;
8074 		if (mpt3sas_port->remote_identify.device_type ==
8075 		    SAS_END_DEVICE)
8076 			mpt3sas_device_remove_by_sas_address(ioc,
8077 			    mpt3sas_port->remote_identify.sas_address);
8078 		else if (mpt3sas_port->remote_identify.device_type ==
8079 		    SAS_EDGE_EXPANDER_DEVICE ||
8080 		    mpt3sas_port->remote_identify.device_type ==
8081 		    SAS_FANOUT_EXPANDER_DEVICE)
8082 			mpt3sas_expander_remove(ioc,
8083 			    mpt3sas_port->remote_identify.sas_address);
8084 	}
8085 
8086 	mpt3sas_transport_port_remove(ioc, sas_expander->sas_address,
8087 	    sas_expander->sas_address_parent);
8088 
8089 	pr_info(MPT3SAS_FMT
8090 		"expander_remove: handle(0x%04x), sas_addr(0x%016llx)\n",
8091 		ioc->name,
8092 	    sas_expander->handle, (unsigned long long)
8093 	    sas_expander->sas_address);
8094 
8095 	kfree(sas_expander->phy);
8096 	kfree(sas_expander);
8097 }
8098 
8099 /**
8100  * _scsih_ir_shutdown - IR shutdown notification
8101  * @ioc: per adapter object
8102  *
8103  * Sending RAID Action to alert the Integrated RAID subsystem of the IOC that
8104  * the host system is shutting down.
8105  *
8106  * Return nothing.
8107  */
8108 static void
8109 _scsih_ir_shutdown(struct MPT3SAS_ADAPTER *ioc)
8110 {
8111 	Mpi2RaidActionRequest_t *mpi_request;
8112 	Mpi2RaidActionReply_t *mpi_reply;
8113 	u16 smid;
8114 
8115 	/* is IR firmware build loaded ? */
8116 	if (!ioc->ir_firmware)
8117 		return;
8118 
8119 	/* are there any volumes ? */
8120 	if (list_empty(&ioc->raid_device_list))
8121 		return;
8122 
8123 	mutex_lock(&ioc->scsih_cmds.mutex);
8124 
8125 	if (ioc->scsih_cmds.status != MPT3_CMD_NOT_USED) {
8126 		pr_err(MPT3SAS_FMT "%s: scsih_cmd in use\n",
8127 		    ioc->name, __func__);
8128 		goto out;
8129 	}
8130 	ioc->scsih_cmds.status = MPT3_CMD_PENDING;
8131 
8132 	smid = mpt3sas_base_get_smid(ioc, ioc->scsih_cb_idx);
8133 	if (!smid) {
8134 		pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
8135 		    ioc->name, __func__);
8136 		ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
8137 		goto out;
8138 	}
8139 
8140 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
8141 	ioc->scsih_cmds.smid = smid;
8142 	memset(mpi_request, 0, sizeof(Mpi2RaidActionRequest_t));
8143 
8144 	mpi_request->Function = MPI2_FUNCTION_RAID_ACTION;
8145 	mpi_request->Action = MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED;
8146 
8147 	if (!ioc->hide_ir_msg)
8148 		pr_info(MPT3SAS_FMT "IR shutdown (sending)\n", ioc->name);
8149 	init_completion(&ioc->scsih_cmds.done);
8150 	ioc->put_smid_default(ioc, smid);
8151 	wait_for_completion_timeout(&ioc->scsih_cmds.done, 10*HZ);
8152 
8153 	if (!(ioc->scsih_cmds.status & MPT3_CMD_COMPLETE)) {
8154 		pr_err(MPT3SAS_FMT "%s: timeout\n",
8155 		    ioc->name, __func__);
8156 		goto out;
8157 	}
8158 
8159 	if (ioc->scsih_cmds.status & MPT3_CMD_REPLY_VALID) {
8160 		mpi_reply = ioc->scsih_cmds.reply;
8161 		if (!ioc->hide_ir_msg)
8162 			pr_info(MPT3SAS_FMT "IR shutdown "
8163 			   "(complete): ioc_status(0x%04x), loginfo(0x%08x)\n",
8164 			    ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
8165 			    le32_to_cpu(mpi_reply->IOCLogInfo));
8166 	}
8167 
8168  out:
8169 	ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
8170 	mutex_unlock(&ioc->scsih_cmds.mutex);
8171 }
8172 
8173 /**
8174  * scsih_remove - detach and remove add host
8175  * @pdev: PCI device struct
8176  *
8177  * Routine called when unloading the driver.
8178  * Return nothing.
8179  */
8180 static void scsih_remove(struct pci_dev *pdev)
8181 {
8182 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
8183 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8184 	struct _sas_port *mpt3sas_port, *next_port;
8185 	struct _raid_device *raid_device, *next;
8186 	struct MPT3SAS_TARGET *sas_target_priv_data;
8187 	struct workqueue_struct	*wq;
8188 	unsigned long flags;
8189 
8190 	ioc->remove_host = 1;
8191 	_scsih_fw_event_cleanup_queue(ioc);
8192 
8193 	spin_lock_irqsave(&ioc->fw_event_lock, flags);
8194 	wq = ioc->firmware_event_thread;
8195 	ioc->firmware_event_thread = NULL;
8196 	spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
8197 	if (wq)
8198 		destroy_workqueue(wq);
8199 
8200 	/* release all the volumes */
8201 	_scsih_ir_shutdown(ioc);
8202 	list_for_each_entry_safe(raid_device, next, &ioc->raid_device_list,
8203 	    list) {
8204 		if (raid_device->starget) {
8205 			sas_target_priv_data =
8206 			    raid_device->starget->hostdata;
8207 			sas_target_priv_data->deleted = 1;
8208 			scsi_remove_target(&raid_device->starget->dev);
8209 		}
8210 		pr_info(MPT3SAS_FMT "removing handle(0x%04x), wwid(0x%016llx)\n",
8211 			ioc->name,  raid_device->handle,
8212 		    (unsigned long long) raid_device->wwid);
8213 		_scsih_raid_device_remove(ioc, raid_device);
8214 	}
8215 
8216 	/* free ports attached to the sas_host */
8217 	list_for_each_entry_safe(mpt3sas_port, next_port,
8218 	   &ioc->sas_hba.sas_port_list, port_list) {
8219 		if (mpt3sas_port->remote_identify.device_type ==
8220 		    SAS_END_DEVICE)
8221 			mpt3sas_device_remove_by_sas_address(ioc,
8222 			    mpt3sas_port->remote_identify.sas_address);
8223 		else if (mpt3sas_port->remote_identify.device_type ==
8224 		    SAS_EDGE_EXPANDER_DEVICE ||
8225 		    mpt3sas_port->remote_identify.device_type ==
8226 		    SAS_FANOUT_EXPANDER_DEVICE)
8227 			mpt3sas_expander_remove(ioc,
8228 			    mpt3sas_port->remote_identify.sas_address);
8229 	}
8230 
8231 	/* free phys attached to the sas_host */
8232 	if (ioc->sas_hba.num_phys) {
8233 		kfree(ioc->sas_hba.phy);
8234 		ioc->sas_hba.phy = NULL;
8235 		ioc->sas_hba.num_phys = 0;
8236 	}
8237 
8238 	sas_remove_host(shost);
8239 	scsi_remove_host(shost);
8240 	mpt3sas_base_detach(ioc);
8241 	spin_lock(&gioc_lock);
8242 	list_del(&ioc->list);
8243 	spin_unlock(&gioc_lock);
8244 	scsi_host_put(shost);
8245 }
8246 
8247 /**
8248  * scsih_shutdown - routine call during system shutdown
8249  * @pdev: PCI device struct
8250  *
8251  * Return nothing.
8252  */
8253 static void
8254 scsih_shutdown(struct pci_dev *pdev)
8255 {
8256 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
8257 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8258 	struct workqueue_struct	*wq;
8259 	unsigned long flags;
8260 
8261 	ioc->remove_host = 1;
8262 	_scsih_fw_event_cleanup_queue(ioc);
8263 
8264 	spin_lock_irqsave(&ioc->fw_event_lock, flags);
8265 	wq = ioc->firmware_event_thread;
8266 	ioc->firmware_event_thread = NULL;
8267 	spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
8268 	if (wq)
8269 		destroy_workqueue(wq);
8270 
8271 	_scsih_ir_shutdown(ioc);
8272 	mpt3sas_base_detach(ioc);
8273 }
8274 
8275 
8276 /**
8277  * _scsih_probe_boot_devices - reports 1st device
8278  * @ioc: per adapter object
8279  *
8280  * If specified in bios page 2, this routine reports the 1st
8281  * device scsi-ml or sas transport for persistent boot device
8282  * purposes.  Please refer to function _scsih_determine_boot_device()
8283  */
8284 static void
8285 _scsih_probe_boot_devices(struct MPT3SAS_ADAPTER *ioc)
8286 {
8287 	u8 is_raid;
8288 	void *device;
8289 	struct _sas_device *sas_device;
8290 	struct _raid_device *raid_device;
8291 	u16 handle;
8292 	u64 sas_address_parent;
8293 	u64 sas_address;
8294 	unsigned long flags;
8295 	int rc;
8296 
8297 	 /* no Bios, return immediately */
8298 	if (!ioc->bios_pg3.BiosVersion)
8299 		return;
8300 
8301 	device = NULL;
8302 	is_raid = 0;
8303 	if (ioc->req_boot_device.device) {
8304 		device =  ioc->req_boot_device.device;
8305 		is_raid = ioc->req_boot_device.is_raid;
8306 	} else if (ioc->req_alt_boot_device.device) {
8307 		device =  ioc->req_alt_boot_device.device;
8308 		is_raid = ioc->req_alt_boot_device.is_raid;
8309 	} else if (ioc->current_boot_device.device) {
8310 		device =  ioc->current_boot_device.device;
8311 		is_raid = ioc->current_boot_device.is_raid;
8312 	}
8313 
8314 	if (!device)
8315 		return;
8316 
8317 	if (is_raid) {
8318 		raid_device = device;
8319 		rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
8320 		    raid_device->id, 0);
8321 		if (rc)
8322 			_scsih_raid_device_remove(ioc, raid_device);
8323 	} else {
8324 		spin_lock_irqsave(&ioc->sas_device_lock, flags);
8325 		sas_device = device;
8326 		handle = sas_device->handle;
8327 		sas_address_parent = sas_device->sas_address_parent;
8328 		sas_address = sas_device->sas_address;
8329 		list_move_tail(&sas_device->list, &ioc->sas_device_list);
8330 		spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8331 
8332 		if (ioc->hide_drives)
8333 			return;
8334 		if (!mpt3sas_transport_port_add(ioc, handle,
8335 		    sas_address_parent)) {
8336 			_scsih_sas_device_remove(ioc, sas_device);
8337 		} else if (!sas_device->starget) {
8338 			if (!ioc->is_driver_loading) {
8339 				mpt3sas_transport_port_remove(ioc,
8340 				    sas_address,
8341 				    sas_address_parent);
8342 				_scsih_sas_device_remove(ioc, sas_device);
8343 			}
8344 		}
8345 	}
8346 }
8347 
8348 /**
8349  * _scsih_probe_raid - reporting raid volumes to scsi-ml
8350  * @ioc: per adapter object
8351  *
8352  * Called during initial loading of the driver.
8353  */
8354 static void
8355 _scsih_probe_raid(struct MPT3SAS_ADAPTER *ioc)
8356 {
8357 	struct _raid_device *raid_device, *raid_next;
8358 	int rc;
8359 
8360 	list_for_each_entry_safe(raid_device, raid_next,
8361 	    &ioc->raid_device_list, list) {
8362 		if (raid_device->starget)
8363 			continue;
8364 		rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
8365 		    raid_device->id, 0);
8366 		if (rc)
8367 			_scsih_raid_device_remove(ioc, raid_device);
8368 	}
8369 }
8370 
8371 static struct _sas_device *get_next_sas_device(struct MPT3SAS_ADAPTER *ioc)
8372 {
8373 	struct _sas_device *sas_device = NULL;
8374 	unsigned long flags;
8375 
8376 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
8377 	if (!list_empty(&ioc->sas_device_init_list)) {
8378 		sas_device = list_first_entry(&ioc->sas_device_init_list,
8379 				struct _sas_device, list);
8380 		sas_device_get(sas_device);
8381 	}
8382 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8383 
8384 	return sas_device;
8385 }
8386 
8387 static void sas_device_make_active(struct MPT3SAS_ADAPTER *ioc,
8388 		struct _sas_device *sas_device)
8389 {
8390 	unsigned long flags;
8391 
8392 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
8393 
8394 	/*
8395 	 * Since we dropped the lock during the call to port_add(), we need to
8396 	 * be careful here that somebody else didn't move or delete this item
8397 	 * while we were busy with other things.
8398 	 *
8399 	 * If it was on the list, we need a put() for the reference the list
8400 	 * had. Either way, we need a get() for the destination list.
8401 	 */
8402 	if (!list_empty(&sas_device->list)) {
8403 		list_del_init(&sas_device->list);
8404 		sas_device_put(sas_device);
8405 	}
8406 
8407 	sas_device_get(sas_device);
8408 	list_add_tail(&sas_device->list, &ioc->sas_device_list);
8409 
8410 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8411 }
8412 
8413 /**
8414  * _scsih_probe_sas - reporting sas devices to sas transport
8415  * @ioc: per adapter object
8416  *
8417  * Called during initial loading of the driver.
8418  */
8419 static void
8420 _scsih_probe_sas(struct MPT3SAS_ADAPTER *ioc)
8421 {
8422 	struct _sas_device *sas_device;
8423 
8424 	if (ioc->hide_drives)
8425 		return;
8426 
8427 	while ((sas_device = get_next_sas_device(ioc))) {
8428 		if (!mpt3sas_transport_port_add(ioc, sas_device->handle,
8429 		    sas_device->sas_address_parent)) {
8430 			_scsih_sas_device_remove(ioc, sas_device);
8431 			sas_device_put(sas_device);
8432 			continue;
8433 		} else if (!sas_device->starget) {
8434 			/*
8435 			 * When asyn scanning is enabled, its not possible to
8436 			 * remove devices while scanning is turned on due to an
8437 			 * oops in scsi_sysfs_add_sdev()->add_device()->
8438 			 * sysfs_addrm_start()
8439 			 */
8440 			if (!ioc->is_driver_loading) {
8441 				mpt3sas_transport_port_remove(ioc,
8442 				    sas_device->sas_address,
8443 				    sas_device->sas_address_parent);
8444 				_scsih_sas_device_remove(ioc, sas_device);
8445 				sas_device_put(sas_device);
8446 				continue;
8447 			}
8448 		}
8449 		sas_device_make_active(ioc, sas_device);
8450 		sas_device_put(sas_device);
8451 	}
8452 }
8453 
8454 /**
8455  * _scsih_probe_devices - probing for devices
8456  * @ioc: per adapter object
8457  *
8458  * Called during initial loading of the driver.
8459  */
8460 static void
8461 _scsih_probe_devices(struct MPT3SAS_ADAPTER *ioc)
8462 {
8463 	u16 volume_mapping_flags;
8464 
8465 	if (!(ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR))
8466 		return;  /* return when IOC doesn't support initiator mode */
8467 
8468 	_scsih_probe_boot_devices(ioc);
8469 
8470 	if (ioc->ir_firmware) {
8471 		volume_mapping_flags =
8472 		    le16_to_cpu(ioc->ioc_pg8.IRVolumeMappingFlags) &
8473 		    MPI2_IOCPAGE8_IRFLAGS_MASK_VOLUME_MAPPING_MODE;
8474 		if (volume_mapping_flags ==
8475 		    MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING) {
8476 			_scsih_probe_raid(ioc);
8477 			_scsih_probe_sas(ioc);
8478 		} else {
8479 			_scsih_probe_sas(ioc);
8480 			_scsih_probe_raid(ioc);
8481 		}
8482 	} else
8483 		_scsih_probe_sas(ioc);
8484 }
8485 
8486 /**
8487  * scsih_scan_start - scsi lld callback for .scan_start
8488  * @shost: SCSI host pointer
8489  *
8490  * The shost has the ability to discover targets on its own instead
8491  * of scanning the entire bus.  In our implemention, we will kick off
8492  * firmware discovery.
8493  */
8494 static void
8495 scsih_scan_start(struct Scsi_Host *shost)
8496 {
8497 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8498 	int rc;
8499 	if (diag_buffer_enable != -1 && diag_buffer_enable != 0)
8500 		mpt3sas_enable_diag_buffer(ioc, diag_buffer_enable);
8501 
8502 	if (disable_discovery > 0)
8503 		return;
8504 
8505 	ioc->start_scan = 1;
8506 	rc = mpt3sas_port_enable(ioc);
8507 
8508 	if (rc != 0)
8509 		pr_info(MPT3SAS_FMT "port enable: FAILED\n", ioc->name);
8510 }
8511 
8512 /**
8513  * scsih_scan_finished - scsi lld callback for .scan_finished
8514  * @shost: SCSI host pointer
8515  * @time: elapsed time of the scan in jiffies
8516  *
8517  * This function will be called periodicallyn until it returns 1 with the
8518  * scsi_host and the elapsed time of the scan in jiffies. In our implemention,
8519  * we wait for firmware discovery to complete, then return 1.
8520  */
8521 static int
8522 scsih_scan_finished(struct Scsi_Host *shost, unsigned long time)
8523 {
8524 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8525 
8526 	if (disable_discovery > 0) {
8527 		ioc->is_driver_loading = 0;
8528 		ioc->wait_for_discovery_to_complete = 0;
8529 		return 1;
8530 	}
8531 
8532 	if (time >= (300 * HZ)) {
8533 		ioc->base_cmds.status = MPT3_CMD_NOT_USED;
8534 		pr_info(MPT3SAS_FMT
8535 			"port enable: FAILED with timeout (timeout=300s)\n",
8536 			ioc->name);
8537 		ioc->is_driver_loading = 0;
8538 		return 1;
8539 	}
8540 
8541 	if (ioc->start_scan)
8542 		return 0;
8543 
8544 	if (ioc->start_scan_failed) {
8545 		pr_info(MPT3SAS_FMT
8546 			"port enable: FAILED with (ioc_status=0x%08x)\n",
8547 			ioc->name, ioc->start_scan_failed);
8548 		ioc->is_driver_loading = 0;
8549 		ioc->wait_for_discovery_to_complete = 0;
8550 		ioc->remove_host = 1;
8551 		return 1;
8552 	}
8553 
8554 	pr_info(MPT3SAS_FMT "port enable: SUCCESS\n", ioc->name);
8555 	ioc->base_cmds.status = MPT3_CMD_NOT_USED;
8556 
8557 	if (ioc->wait_for_discovery_to_complete) {
8558 		ioc->wait_for_discovery_to_complete = 0;
8559 		_scsih_probe_devices(ioc);
8560 	}
8561 	mpt3sas_base_start_watchdog(ioc);
8562 	ioc->is_driver_loading = 0;
8563 	return 1;
8564 }
8565 
8566 /* shost template for SAS 2.0 HBA devices */
8567 static struct scsi_host_template mpt2sas_driver_template = {
8568 	.module				= THIS_MODULE,
8569 	.name				= "Fusion MPT SAS Host",
8570 	.proc_name			= MPT2SAS_DRIVER_NAME,
8571 	.queuecommand			= scsih_qcmd,
8572 	.target_alloc			= scsih_target_alloc,
8573 	.slave_alloc			= scsih_slave_alloc,
8574 	.slave_configure		= scsih_slave_configure,
8575 	.target_destroy			= scsih_target_destroy,
8576 	.slave_destroy			= scsih_slave_destroy,
8577 	.scan_finished			= scsih_scan_finished,
8578 	.scan_start			= scsih_scan_start,
8579 	.change_queue_depth		= scsih_change_queue_depth,
8580 	.eh_abort_handler		= scsih_abort,
8581 	.eh_device_reset_handler	= scsih_dev_reset,
8582 	.eh_target_reset_handler	= scsih_target_reset,
8583 	.eh_host_reset_handler		= scsih_host_reset,
8584 	.bios_param			= scsih_bios_param,
8585 	.can_queue			= 1,
8586 	.this_id			= -1,
8587 	.sg_tablesize			= MPT2SAS_SG_DEPTH,
8588 	.max_sectors			= 32767,
8589 	.cmd_per_lun			= 7,
8590 	.use_clustering			= ENABLE_CLUSTERING,
8591 	.shost_attrs			= mpt3sas_host_attrs,
8592 	.sdev_attrs			= mpt3sas_dev_attrs,
8593 	.track_queue_depth		= 1,
8594 };
8595 
8596 /* raid transport support for SAS 2.0 HBA devices */
8597 static struct raid_function_template mpt2sas_raid_functions = {
8598 	.cookie		= &mpt2sas_driver_template,
8599 	.is_raid	= scsih_is_raid,
8600 	.get_resync	= scsih_get_resync,
8601 	.get_state	= scsih_get_state,
8602 };
8603 
8604 /* shost template for SAS 3.0 HBA devices */
8605 static struct scsi_host_template mpt3sas_driver_template = {
8606 	.module				= THIS_MODULE,
8607 	.name				= "Fusion MPT SAS Host",
8608 	.proc_name			= MPT3SAS_DRIVER_NAME,
8609 	.queuecommand			= scsih_qcmd,
8610 	.target_alloc			= scsih_target_alloc,
8611 	.slave_alloc			= scsih_slave_alloc,
8612 	.slave_configure		= scsih_slave_configure,
8613 	.target_destroy			= scsih_target_destroy,
8614 	.slave_destroy			= scsih_slave_destroy,
8615 	.scan_finished			= scsih_scan_finished,
8616 	.scan_start			= scsih_scan_start,
8617 	.change_queue_depth		= scsih_change_queue_depth,
8618 	.eh_abort_handler		= scsih_abort,
8619 	.eh_device_reset_handler	= scsih_dev_reset,
8620 	.eh_target_reset_handler	= scsih_target_reset,
8621 	.eh_host_reset_handler		= scsih_host_reset,
8622 	.bios_param			= scsih_bios_param,
8623 	.can_queue			= 1,
8624 	.this_id			= -1,
8625 	.sg_tablesize			= MPT3SAS_SG_DEPTH,
8626 	.max_sectors			= 32767,
8627 	.cmd_per_lun			= 7,
8628 	.use_clustering			= ENABLE_CLUSTERING,
8629 	.shost_attrs			= mpt3sas_host_attrs,
8630 	.sdev_attrs			= mpt3sas_dev_attrs,
8631 	.track_queue_depth		= 1,
8632 };
8633 
8634 /* raid transport support for SAS 3.0 HBA devices */
8635 static struct raid_function_template mpt3sas_raid_functions = {
8636 	.cookie		= &mpt3sas_driver_template,
8637 	.is_raid	= scsih_is_raid,
8638 	.get_resync	= scsih_get_resync,
8639 	.get_state	= scsih_get_state,
8640 };
8641 
8642 /**
8643  * _scsih_determine_hba_mpi_version - determine in which MPI version class
8644  *					this device belongs to.
8645  * @pdev: PCI device struct
8646  *
8647  * return MPI2_VERSION for SAS 2.0 HBA devices,
8648  *	MPI25_VERSION for SAS 3.0 HBA devices, and
8649  *	MPI26 VERSION for Cutlass & Invader SAS 3.0 HBA devices
8650  */
8651 static u16
8652 _scsih_determine_hba_mpi_version(struct pci_dev *pdev)
8653 {
8654 
8655 	switch (pdev->device) {
8656 	case MPI2_MFGPAGE_DEVID_SSS6200:
8657 	case MPI2_MFGPAGE_DEVID_SAS2004:
8658 	case MPI2_MFGPAGE_DEVID_SAS2008:
8659 	case MPI2_MFGPAGE_DEVID_SAS2108_1:
8660 	case MPI2_MFGPAGE_DEVID_SAS2108_2:
8661 	case MPI2_MFGPAGE_DEVID_SAS2108_3:
8662 	case MPI2_MFGPAGE_DEVID_SAS2116_1:
8663 	case MPI2_MFGPAGE_DEVID_SAS2116_2:
8664 	case MPI2_MFGPAGE_DEVID_SAS2208_1:
8665 	case MPI2_MFGPAGE_DEVID_SAS2208_2:
8666 	case MPI2_MFGPAGE_DEVID_SAS2208_3:
8667 	case MPI2_MFGPAGE_DEVID_SAS2208_4:
8668 	case MPI2_MFGPAGE_DEVID_SAS2208_5:
8669 	case MPI2_MFGPAGE_DEVID_SAS2208_6:
8670 	case MPI2_MFGPAGE_DEVID_SAS2308_1:
8671 	case MPI2_MFGPAGE_DEVID_SAS2308_2:
8672 	case MPI2_MFGPAGE_DEVID_SAS2308_3:
8673 		return MPI2_VERSION;
8674 	case MPI25_MFGPAGE_DEVID_SAS3004:
8675 	case MPI25_MFGPAGE_DEVID_SAS3008:
8676 	case MPI25_MFGPAGE_DEVID_SAS3108_1:
8677 	case MPI25_MFGPAGE_DEVID_SAS3108_2:
8678 	case MPI25_MFGPAGE_DEVID_SAS3108_5:
8679 	case MPI25_MFGPAGE_DEVID_SAS3108_6:
8680 		return MPI25_VERSION;
8681 	case MPI26_MFGPAGE_DEVID_SAS3216:
8682 	case MPI26_MFGPAGE_DEVID_SAS3224:
8683 	case MPI26_MFGPAGE_DEVID_SAS3316_1:
8684 	case MPI26_MFGPAGE_DEVID_SAS3316_2:
8685 	case MPI26_MFGPAGE_DEVID_SAS3316_3:
8686 	case MPI26_MFGPAGE_DEVID_SAS3316_4:
8687 	case MPI26_MFGPAGE_DEVID_SAS3324_1:
8688 	case MPI26_MFGPAGE_DEVID_SAS3324_2:
8689 	case MPI26_MFGPAGE_DEVID_SAS3324_3:
8690 	case MPI26_MFGPAGE_DEVID_SAS3324_4:
8691 	case MPI26_MFGPAGE_DEVID_SAS3508:
8692 	case MPI26_MFGPAGE_DEVID_SAS3508_1:
8693 	case MPI26_MFGPAGE_DEVID_SAS3408:
8694 	case MPI26_MFGPAGE_DEVID_SAS3516:
8695 	case MPI26_MFGPAGE_DEVID_SAS3516_1:
8696 	case MPI26_MFGPAGE_DEVID_SAS3416:
8697 		return MPI26_VERSION;
8698 	}
8699 	return 0;
8700 }
8701 
8702 /**
8703  * _scsih_probe - attach and add scsi host
8704  * @pdev: PCI device struct
8705  * @id: pci device id
8706  *
8707  * Returns 0 success, anything else error.
8708  */
8709 static int
8710 _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id)
8711 {
8712 	struct MPT3SAS_ADAPTER *ioc;
8713 	struct Scsi_Host *shost = NULL;
8714 	int rv;
8715 	u16 hba_mpi_version;
8716 
8717 	/* Determine in which MPI version class this pci device belongs */
8718 	hba_mpi_version = _scsih_determine_hba_mpi_version(pdev);
8719 	if (hba_mpi_version == 0)
8720 		return -ENODEV;
8721 
8722 	/* Enumerate only SAS 2.0 HBA's if hbas_to_enumerate is one,
8723 	 * for other generation HBA's return with -ENODEV
8724 	 */
8725 	if ((hbas_to_enumerate == 1) && (hba_mpi_version !=  MPI2_VERSION))
8726 		return -ENODEV;
8727 
8728 	/* Enumerate only SAS 3.0 HBA's if hbas_to_enumerate is two,
8729 	 * for other generation HBA's return with -ENODEV
8730 	 */
8731 	if ((hbas_to_enumerate == 2) && (!(hba_mpi_version ==  MPI25_VERSION
8732 		|| hba_mpi_version ==  MPI26_VERSION)))
8733 		return -ENODEV;
8734 
8735 	switch (hba_mpi_version) {
8736 	case MPI2_VERSION:
8737 		/* Use mpt2sas driver host template for SAS 2.0 HBA's */
8738 		shost = scsi_host_alloc(&mpt2sas_driver_template,
8739 		  sizeof(struct MPT3SAS_ADAPTER));
8740 		if (!shost)
8741 			return -ENODEV;
8742 		ioc = shost_priv(shost);
8743 		memset(ioc, 0, sizeof(struct MPT3SAS_ADAPTER));
8744 		ioc->hba_mpi_version_belonged = hba_mpi_version;
8745 		ioc->id = mpt2_ids++;
8746 		sprintf(ioc->driver_name, "%s", MPT2SAS_DRIVER_NAME);
8747 		if (pdev->device == MPI2_MFGPAGE_DEVID_SSS6200) {
8748 			ioc->is_warpdrive = 1;
8749 			ioc->hide_ir_msg = 1;
8750 		} else
8751 			ioc->mfg_pg10_hide_flag = MFG_PAGE10_EXPOSE_ALL_DISKS;
8752 		break;
8753 	case MPI25_VERSION:
8754 	case MPI26_VERSION:
8755 		/* Use mpt3sas driver host template for SAS 3.0 HBA's */
8756 		shost = scsi_host_alloc(&mpt3sas_driver_template,
8757 		  sizeof(struct MPT3SAS_ADAPTER));
8758 		if (!shost)
8759 			return -ENODEV;
8760 		ioc = shost_priv(shost);
8761 		memset(ioc, 0, sizeof(struct MPT3SAS_ADAPTER));
8762 		ioc->hba_mpi_version_belonged = hba_mpi_version;
8763 		ioc->id = mpt3_ids++;
8764 		sprintf(ioc->driver_name, "%s", MPT3SAS_DRIVER_NAME);
8765 		switch (pdev->device) {
8766 		case MPI26_MFGPAGE_DEVID_SAS3508:
8767 		case MPI26_MFGPAGE_DEVID_SAS3508_1:
8768 		case MPI26_MFGPAGE_DEVID_SAS3408:
8769 		case MPI26_MFGPAGE_DEVID_SAS3516:
8770 		case MPI26_MFGPAGE_DEVID_SAS3516_1:
8771 		case MPI26_MFGPAGE_DEVID_SAS3416:
8772 			ioc->is_gen35_ioc = 1;
8773 			break;
8774 		default:
8775 			ioc->is_gen35_ioc = 0;
8776 		}
8777 		if ((ioc->hba_mpi_version_belonged == MPI25_VERSION &&
8778 			pdev->revision >= SAS3_PCI_DEVICE_C0_REVISION) ||
8779 			(ioc->hba_mpi_version_belonged == MPI26_VERSION)) {
8780 			ioc->combined_reply_queue = 1;
8781 			if (ioc->is_gen35_ioc)
8782 				ioc->combined_reply_index_count =
8783 				 MPT3_SUP_REPLY_POST_HOST_INDEX_REG_COUNT_G35;
8784 			else
8785 				ioc->combined_reply_index_count =
8786 				 MPT3_SUP_REPLY_POST_HOST_INDEX_REG_COUNT_G3;
8787 		}
8788 		break;
8789 	default:
8790 		return -ENODEV;
8791 	}
8792 
8793 	INIT_LIST_HEAD(&ioc->list);
8794 	spin_lock(&gioc_lock);
8795 	list_add_tail(&ioc->list, &mpt3sas_ioc_list);
8796 	spin_unlock(&gioc_lock);
8797 	ioc->shost = shost;
8798 	ioc->pdev = pdev;
8799 	ioc->scsi_io_cb_idx = scsi_io_cb_idx;
8800 	ioc->tm_cb_idx = tm_cb_idx;
8801 	ioc->ctl_cb_idx = ctl_cb_idx;
8802 	ioc->base_cb_idx = base_cb_idx;
8803 	ioc->port_enable_cb_idx = port_enable_cb_idx;
8804 	ioc->transport_cb_idx = transport_cb_idx;
8805 	ioc->scsih_cb_idx = scsih_cb_idx;
8806 	ioc->config_cb_idx = config_cb_idx;
8807 	ioc->tm_tr_cb_idx = tm_tr_cb_idx;
8808 	ioc->tm_tr_volume_cb_idx = tm_tr_volume_cb_idx;
8809 	ioc->tm_sas_control_cb_idx = tm_sas_control_cb_idx;
8810 	ioc->logging_level = logging_level;
8811 	ioc->schedule_dead_ioc_flush_running_cmds = &_scsih_flush_running_cmds;
8812 	/* misc semaphores and spin locks */
8813 	mutex_init(&ioc->reset_in_progress_mutex);
8814 	/* initializing pci_access_mutex lock */
8815 	mutex_init(&ioc->pci_access_mutex);
8816 	spin_lock_init(&ioc->ioc_reset_in_progress_lock);
8817 	spin_lock_init(&ioc->scsi_lookup_lock);
8818 	spin_lock_init(&ioc->sas_device_lock);
8819 	spin_lock_init(&ioc->sas_node_lock);
8820 	spin_lock_init(&ioc->fw_event_lock);
8821 	spin_lock_init(&ioc->raid_device_lock);
8822 	spin_lock_init(&ioc->diag_trigger_lock);
8823 
8824 	INIT_LIST_HEAD(&ioc->sas_device_list);
8825 	INIT_LIST_HEAD(&ioc->sas_device_init_list);
8826 	INIT_LIST_HEAD(&ioc->sas_expander_list);
8827 	INIT_LIST_HEAD(&ioc->fw_event_list);
8828 	INIT_LIST_HEAD(&ioc->raid_device_list);
8829 	INIT_LIST_HEAD(&ioc->sas_hba.sas_port_list);
8830 	INIT_LIST_HEAD(&ioc->delayed_tr_list);
8831 	INIT_LIST_HEAD(&ioc->delayed_sc_list);
8832 	INIT_LIST_HEAD(&ioc->delayed_event_ack_list);
8833 	INIT_LIST_HEAD(&ioc->delayed_tr_volume_list);
8834 	INIT_LIST_HEAD(&ioc->reply_queue_list);
8835 
8836 	sprintf(ioc->name, "%s_cm%d", ioc->driver_name, ioc->id);
8837 
8838 	/* init shost parameters */
8839 	shost->max_cmd_len = 32;
8840 	shost->max_lun = max_lun;
8841 	shost->transportt = mpt3sas_transport_template;
8842 	shost->unique_id = ioc->id;
8843 
8844 	if (max_sectors != 0xFFFF) {
8845 		if (max_sectors < 64) {
8846 			shost->max_sectors = 64;
8847 			pr_warn(MPT3SAS_FMT "Invalid value %d passed " \
8848 			    "for max_sectors, range is 64 to 32767. Assigning "
8849 			    "value of 64.\n", ioc->name, max_sectors);
8850 		} else if (max_sectors > 32767) {
8851 			shost->max_sectors = 32767;
8852 			pr_warn(MPT3SAS_FMT "Invalid value %d passed " \
8853 			    "for max_sectors, range is 64 to 32767. Assigning "
8854 			    "default value of 32767.\n", ioc->name,
8855 			    max_sectors);
8856 		} else {
8857 			shost->max_sectors = max_sectors & 0xFFFE;
8858 			pr_info(MPT3SAS_FMT
8859 				"The max_sectors value is set to %d\n",
8860 				ioc->name, shost->max_sectors);
8861 		}
8862 	}
8863 
8864 	/* register EEDP capabilities with SCSI layer */
8865 	if (prot_mask > 0)
8866 		scsi_host_set_prot(shost, prot_mask);
8867 	else
8868 		scsi_host_set_prot(shost, SHOST_DIF_TYPE1_PROTECTION
8869 				   | SHOST_DIF_TYPE2_PROTECTION
8870 				   | SHOST_DIF_TYPE3_PROTECTION);
8871 
8872 	scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC);
8873 
8874 	/* event thread */
8875 	snprintf(ioc->firmware_event_name, sizeof(ioc->firmware_event_name),
8876 	    "fw_event_%s%d", ioc->driver_name, ioc->id);
8877 	ioc->firmware_event_thread = alloc_ordered_workqueue(
8878 	    ioc->firmware_event_name, WQ_MEM_RECLAIM);
8879 	if (!ioc->firmware_event_thread) {
8880 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8881 		    ioc->name, __FILE__, __LINE__, __func__);
8882 		rv = -ENODEV;
8883 		goto out_thread_fail;
8884 	}
8885 
8886 	ioc->is_driver_loading = 1;
8887 	if ((mpt3sas_base_attach(ioc))) {
8888 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8889 		    ioc->name, __FILE__, __LINE__, __func__);
8890 		rv = -ENODEV;
8891 		goto out_attach_fail;
8892 	}
8893 
8894 	if (ioc->is_warpdrive) {
8895 		if (ioc->mfg_pg10_hide_flag ==  MFG_PAGE10_EXPOSE_ALL_DISKS)
8896 			ioc->hide_drives = 0;
8897 		else if (ioc->mfg_pg10_hide_flag ==  MFG_PAGE10_HIDE_ALL_DISKS)
8898 			ioc->hide_drives = 1;
8899 		else {
8900 			if (mpt3sas_get_num_volumes(ioc))
8901 				ioc->hide_drives = 1;
8902 			else
8903 				ioc->hide_drives = 0;
8904 		}
8905 	} else
8906 		ioc->hide_drives = 0;
8907 
8908 	rv = scsi_add_host(shost, &pdev->dev);
8909 	if (rv) {
8910 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8911 		    ioc->name, __FILE__, __LINE__, __func__);
8912 		goto out_add_shost_fail;
8913 	}
8914 
8915 	scsi_scan_host(shost);
8916 	return 0;
8917 out_add_shost_fail:
8918 	mpt3sas_base_detach(ioc);
8919  out_attach_fail:
8920 	destroy_workqueue(ioc->firmware_event_thread);
8921  out_thread_fail:
8922 	spin_lock(&gioc_lock);
8923 	list_del(&ioc->list);
8924 	spin_unlock(&gioc_lock);
8925 	scsi_host_put(shost);
8926 	return rv;
8927 }
8928 
8929 #ifdef CONFIG_PM
8930 /**
8931  * scsih_suspend - power management suspend main entry point
8932  * @pdev: PCI device struct
8933  * @state: PM state change to (usually PCI_D3)
8934  *
8935  * Returns 0 success, anything else error.
8936  */
8937 static int
8938 scsih_suspend(struct pci_dev *pdev, pm_message_t state)
8939 {
8940 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
8941 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8942 	pci_power_t device_state;
8943 
8944 	mpt3sas_base_stop_watchdog(ioc);
8945 	flush_scheduled_work();
8946 	scsi_block_requests(shost);
8947 	device_state = pci_choose_state(pdev, state);
8948 	pr_info(MPT3SAS_FMT
8949 		"pdev=0x%p, slot=%s, entering operating state [D%d]\n",
8950 		ioc->name, pdev, pci_name(pdev), device_state);
8951 
8952 	pci_save_state(pdev);
8953 	mpt3sas_base_free_resources(ioc);
8954 	pci_set_power_state(pdev, device_state);
8955 	return 0;
8956 }
8957 
8958 /**
8959  * scsih_resume - power management resume main entry point
8960  * @pdev: PCI device struct
8961  *
8962  * Returns 0 success, anything else error.
8963  */
8964 static int
8965 scsih_resume(struct pci_dev *pdev)
8966 {
8967 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
8968 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8969 	pci_power_t device_state = pdev->current_state;
8970 	int r;
8971 
8972 	pr_info(MPT3SAS_FMT
8973 		"pdev=0x%p, slot=%s, previous operating state [D%d]\n",
8974 		ioc->name, pdev, pci_name(pdev), device_state);
8975 
8976 	pci_set_power_state(pdev, PCI_D0);
8977 	pci_enable_wake(pdev, PCI_D0, 0);
8978 	pci_restore_state(pdev);
8979 	ioc->pdev = pdev;
8980 	r = mpt3sas_base_map_resources(ioc);
8981 	if (r)
8982 		return r;
8983 
8984 	mpt3sas_base_hard_reset_handler(ioc, SOFT_RESET);
8985 	scsi_unblock_requests(shost);
8986 	mpt3sas_base_start_watchdog(ioc);
8987 	return 0;
8988 }
8989 #endif /* CONFIG_PM */
8990 
8991 /**
8992  * scsih_pci_error_detected - Called when a PCI error is detected.
8993  * @pdev: PCI device struct
8994  * @state: PCI channel state
8995  *
8996  * Description: Called when a PCI error is detected.
8997  *
8998  * Return value:
8999  *      PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
9000  */
9001 static pci_ers_result_t
9002 scsih_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
9003 {
9004 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9005 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9006 
9007 	pr_info(MPT3SAS_FMT "PCI error: detected callback, state(%d)!!\n",
9008 	    ioc->name, state);
9009 
9010 	switch (state) {
9011 	case pci_channel_io_normal:
9012 		return PCI_ERS_RESULT_CAN_RECOVER;
9013 	case pci_channel_io_frozen:
9014 		/* Fatal error, prepare for slot reset */
9015 		ioc->pci_error_recovery = 1;
9016 		scsi_block_requests(ioc->shost);
9017 		mpt3sas_base_stop_watchdog(ioc);
9018 		mpt3sas_base_free_resources(ioc);
9019 		return PCI_ERS_RESULT_NEED_RESET;
9020 	case pci_channel_io_perm_failure:
9021 		/* Permanent error, prepare for device removal */
9022 		ioc->pci_error_recovery = 1;
9023 		mpt3sas_base_stop_watchdog(ioc);
9024 		_scsih_flush_running_cmds(ioc);
9025 		return PCI_ERS_RESULT_DISCONNECT;
9026 	}
9027 	return PCI_ERS_RESULT_NEED_RESET;
9028 }
9029 
9030 /**
9031  * scsih_pci_slot_reset - Called when PCI slot has been reset.
9032  * @pdev: PCI device struct
9033  *
9034  * Description: This routine is called by the pci error recovery
9035  * code after the PCI slot has been reset, just before we
9036  * should resume normal operations.
9037  */
9038 static pci_ers_result_t
9039 scsih_pci_slot_reset(struct pci_dev *pdev)
9040 {
9041 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9042 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9043 	int rc;
9044 
9045 	pr_info(MPT3SAS_FMT "PCI error: slot reset callback!!\n",
9046 	     ioc->name);
9047 
9048 	ioc->pci_error_recovery = 0;
9049 	ioc->pdev = pdev;
9050 	pci_restore_state(pdev);
9051 	rc = mpt3sas_base_map_resources(ioc);
9052 	if (rc)
9053 		return PCI_ERS_RESULT_DISCONNECT;
9054 
9055 	rc = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
9056 
9057 	pr_warn(MPT3SAS_FMT "hard reset: %s\n", ioc->name,
9058 	    (rc == 0) ? "success" : "failed");
9059 
9060 	if (!rc)
9061 		return PCI_ERS_RESULT_RECOVERED;
9062 	else
9063 		return PCI_ERS_RESULT_DISCONNECT;
9064 }
9065 
9066 /**
9067  * scsih_pci_resume() - resume normal ops after PCI reset
9068  * @pdev: pointer to PCI device
9069  *
9070  * Called when the error recovery driver tells us that its
9071  * OK to resume normal operation. Use completion to allow
9072  * halted scsi ops to resume.
9073  */
9074 static void
9075 scsih_pci_resume(struct pci_dev *pdev)
9076 {
9077 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9078 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9079 
9080 	pr_info(MPT3SAS_FMT "PCI error: resume callback!!\n", ioc->name);
9081 
9082 	pci_cleanup_aer_uncorrect_error_status(pdev);
9083 	mpt3sas_base_start_watchdog(ioc);
9084 	scsi_unblock_requests(ioc->shost);
9085 }
9086 
9087 /**
9088  * scsih_pci_mmio_enabled - Enable MMIO and dump debug registers
9089  * @pdev: pointer to PCI device
9090  */
9091 static pci_ers_result_t
9092 scsih_pci_mmio_enabled(struct pci_dev *pdev)
9093 {
9094 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9095 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9096 
9097 	pr_info(MPT3SAS_FMT "PCI error: mmio enabled callback!!\n",
9098 	    ioc->name);
9099 
9100 	/* TODO - dump whatever for debugging purposes */
9101 
9102 	/* This called only if scsih_pci_error_detected returns
9103 	 * PCI_ERS_RESULT_CAN_RECOVER. Read/write to the device still
9104 	 * works, no need to reset slot.
9105 	 */
9106 	return PCI_ERS_RESULT_RECOVERED;
9107 }
9108 
9109 /**
9110  * scsih__ncq_prio_supp - Check for NCQ command priority support
9111  * @sdev: scsi device struct
9112  *
9113  * This is called when a user indicates they would like to enable
9114  * ncq command priorities. This works only on SATA devices.
9115  */
9116 bool scsih_ncq_prio_supp(struct scsi_device *sdev)
9117 {
9118 	unsigned char *buf;
9119 	bool ncq_prio_supp = false;
9120 
9121 	if (!scsi_device_supports_vpd(sdev))
9122 		return ncq_prio_supp;
9123 
9124 	buf = kmalloc(SCSI_VPD_PG_LEN, GFP_KERNEL);
9125 	if (!buf)
9126 		return ncq_prio_supp;
9127 
9128 	if (!scsi_get_vpd_page(sdev, 0x89, buf, SCSI_VPD_PG_LEN))
9129 		ncq_prio_supp = (buf[213] >> 4) & 1;
9130 
9131 	kfree(buf);
9132 	return ncq_prio_supp;
9133 }
9134 /*
9135  * The pci device ids are defined in mpi/mpi2_cnfg.h.
9136  */
9137 static const struct pci_device_id mpt3sas_pci_table[] = {
9138 	/* Spitfire ~ 2004 */
9139 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2004,
9140 		PCI_ANY_ID, PCI_ANY_ID },
9141 	/* Falcon ~ 2008 */
9142 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2008,
9143 		PCI_ANY_ID, PCI_ANY_ID },
9144 	/* Liberator ~ 2108 */
9145 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_1,
9146 		PCI_ANY_ID, PCI_ANY_ID },
9147 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_2,
9148 		PCI_ANY_ID, PCI_ANY_ID },
9149 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_3,
9150 		PCI_ANY_ID, PCI_ANY_ID },
9151 	/* Meteor ~ 2116 */
9152 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2116_1,
9153 		PCI_ANY_ID, PCI_ANY_ID },
9154 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2116_2,
9155 		PCI_ANY_ID, PCI_ANY_ID },
9156 	/* Thunderbolt ~ 2208 */
9157 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_1,
9158 		PCI_ANY_ID, PCI_ANY_ID },
9159 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_2,
9160 		PCI_ANY_ID, PCI_ANY_ID },
9161 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_3,
9162 		PCI_ANY_ID, PCI_ANY_ID },
9163 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_4,
9164 		PCI_ANY_ID, PCI_ANY_ID },
9165 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_5,
9166 		PCI_ANY_ID, PCI_ANY_ID },
9167 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_6,
9168 		PCI_ANY_ID, PCI_ANY_ID },
9169 	/* Mustang ~ 2308 */
9170 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_1,
9171 		PCI_ANY_ID, PCI_ANY_ID },
9172 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_2,
9173 		PCI_ANY_ID, PCI_ANY_ID },
9174 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_3,
9175 		PCI_ANY_ID, PCI_ANY_ID },
9176 	/* SSS6200 */
9177 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SSS6200,
9178 		PCI_ANY_ID, PCI_ANY_ID },
9179 	/* Fury ~ 3004 and 3008 */
9180 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3004,
9181 		PCI_ANY_ID, PCI_ANY_ID },
9182 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3008,
9183 		PCI_ANY_ID, PCI_ANY_ID },
9184 	/* Invader ~ 3108 */
9185 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_1,
9186 		PCI_ANY_ID, PCI_ANY_ID },
9187 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_2,
9188 		PCI_ANY_ID, PCI_ANY_ID },
9189 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_5,
9190 		PCI_ANY_ID, PCI_ANY_ID },
9191 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_6,
9192 		PCI_ANY_ID, PCI_ANY_ID },
9193 	/* Cutlass ~ 3216 and 3224 */
9194 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3216,
9195 		PCI_ANY_ID, PCI_ANY_ID },
9196 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3224,
9197 		PCI_ANY_ID, PCI_ANY_ID },
9198 	/* Intruder ~ 3316 and 3324 */
9199 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_1,
9200 		PCI_ANY_ID, PCI_ANY_ID },
9201 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_2,
9202 		PCI_ANY_ID, PCI_ANY_ID },
9203 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_3,
9204 		PCI_ANY_ID, PCI_ANY_ID },
9205 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_4,
9206 		PCI_ANY_ID, PCI_ANY_ID },
9207 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_1,
9208 		PCI_ANY_ID, PCI_ANY_ID },
9209 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_2,
9210 		PCI_ANY_ID, PCI_ANY_ID },
9211 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_3,
9212 		PCI_ANY_ID, PCI_ANY_ID },
9213 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_4,
9214 		PCI_ANY_ID, PCI_ANY_ID },
9215 	/* Ventura, Crusader, Harpoon & Tomcat ~ 3516, 3416, 3508 & 3408*/
9216 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3508,
9217 		PCI_ANY_ID, PCI_ANY_ID },
9218 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3508_1,
9219 		PCI_ANY_ID, PCI_ANY_ID },
9220 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3408,
9221 		PCI_ANY_ID, PCI_ANY_ID },
9222 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3516,
9223 		PCI_ANY_ID, PCI_ANY_ID },
9224 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3516_1,
9225 		PCI_ANY_ID, PCI_ANY_ID },
9226 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3416,
9227 		PCI_ANY_ID, PCI_ANY_ID },
9228 	{0}     /* Terminating entry */
9229 };
9230 MODULE_DEVICE_TABLE(pci, mpt3sas_pci_table);
9231 
9232 static struct pci_error_handlers _mpt3sas_err_handler = {
9233 	.error_detected	= scsih_pci_error_detected,
9234 	.mmio_enabled	= scsih_pci_mmio_enabled,
9235 	.slot_reset	= scsih_pci_slot_reset,
9236 	.resume		= scsih_pci_resume,
9237 };
9238 
9239 static struct pci_driver mpt3sas_driver = {
9240 	.name		= MPT3SAS_DRIVER_NAME,
9241 	.id_table	= mpt3sas_pci_table,
9242 	.probe		= _scsih_probe,
9243 	.remove		= scsih_remove,
9244 	.shutdown	= scsih_shutdown,
9245 	.err_handler	= &_mpt3sas_err_handler,
9246 #ifdef CONFIG_PM
9247 	.suspend	= scsih_suspend,
9248 	.resume		= scsih_resume,
9249 #endif
9250 };
9251 
9252 /**
9253  * scsih_init - main entry point for this driver.
9254  *
9255  * Returns 0 success, anything else error.
9256  */
9257 static int
9258 scsih_init(void)
9259 {
9260 	mpt2_ids = 0;
9261 	mpt3_ids = 0;
9262 
9263 	mpt3sas_base_initialize_callback_handler();
9264 
9265 	 /* queuecommand callback hander */
9266 	scsi_io_cb_idx = mpt3sas_base_register_callback_handler(_scsih_io_done);
9267 
9268 	/* task management callback handler */
9269 	tm_cb_idx = mpt3sas_base_register_callback_handler(_scsih_tm_done);
9270 
9271 	/* base internal commands callback handler */
9272 	base_cb_idx = mpt3sas_base_register_callback_handler(mpt3sas_base_done);
9273 	port_enable_cb_idx = mpt3sas_base_register_callback_handler(
9274 	    mpt3sas_port_enable_done);
9275 
9276 	/* transport internal commands callback handler */
9277 	transport_cb_idx = mpt3sas_base_register_callback_handler(
9278 	    mpt3sas_transport_done);
9279 
9280 	/* scsih internal commands callback handler */
9281 	scsih_cb_idx = mpt3sas_base_register_callback_handler(_scsih_done);
9282 
9283 	/* configuration page API internal commands callback handler */
9284 	config_cb_idx = mpt3sas_base_register_callback_handler(
9285 	    mpt3sas_config_done);
9286 
9287 	/* ctl module callback handler */
9288 	ctl_cb_idx = mpt3sas_base_register_callback_handler(mpt3sas_ctl_done);
9289 
9290 	tm_tr_cb_idx = mpt3sas_base_register_callback_handler(
9291 	    _scsih_tm_tr_complete);
9292 
9293 	tm_tr_volume_cb_idx = mpt3sas_base_register_callback_handler(
9294 	    _scsih_tm_volume_tr_complete);
9295 
9296 	tm_sas_control_cb_idx = mpt3sas_base_register_callback_handler(
9297 	    _scsih_sas_control_complete);
9298 
9299 	return 0;
9300 }
9301 
9302 /**
9303  * scsih_exit - exit point for this driver (when it is a module).
9304  *
9305  * Returns 0 success, anything else error.
9306  */
9307 static void
9308 scsih_exit(void)
9309 {
9310 
9311 	mpt3sas_base_release_callback_handler(scsi_io_cb_idx);
9312 	mpt3sas_base_release_callback_handler(tm_cb_idx);
9313 	mpt3sas_base_release_callback_handler(base_cb_idx);
9314 	mpt3sas_base_release_callback_handler(port_enable_cb_idx);
9315 	mpt3sas_base_release_callback_handler(transport_cb_idx);
9316 	mpt3sas_base_release_callback_handler(scsih_cb_idx);
9317 	mpt3sas_base_release_callback_handler(config_cb_idx);
9318 	mpt3sas_base_release_callback_handler(ctl_cb_idx);
9319 
9320 	mpt3sas_base_release_callback_handler(tm_tr_cb_idx);
9321 	mpt3sas_base_release_callback_handler(tm_tr_volume_cb_idx);
9322 	mpt3sas_base_release_callback_handler(tm_sas_control_cb_idx);
9323 
9324 /* raid transport support */
9325 	if (hbas_to_enumerate != 1)
9326 		raid_class_release(mpt3sas_raid_template);
9327 	if (hbas_to_enumerate != 2)
9328 		raid_class_release(mpt2sas_raid_template);
9329 	sas_release_transport(mpt3sas_transport_template);
9330 }
9331 
9332 /**
9333  * _mpt3sas_init - main entry point for this driver.
9334  *
9335  * Returns 0 success, anything else error.
9336  */
9337 static int __init
9338 _mpt3sas_init(void)
9339 {
9340 	int error;
9341 
9342 	pr_info("%s version %s loaded\n", MPT3SAS_DRIVER_NAME,
9343 					MPT3SAS_DRIVER_VERSION);
9344 
9345 	mpt3sas_transport_template =
9346 	    sas_attach_transport(&mpt3sas_transport_functions);
9347 	if (!mpt3sas_transport_template)
9348 		return -ENODEV;
9349 
9350 	/* No need attach mpt3sas raid functions template
9351 	 * if hbas_to_enumarate value is one.
9352 	 */
9353 	if (hbas_to_enumerate != 1) {
9354 		mpt3sas_raid_template =
9355 				raid_class_attach(&mpt3sas_raid_functions);
9356 		if (!mpt3sas_raid_template) {
9357 			sas_release_transport(mpt3sas_transport_template);
9358 			return -ENODEV;
9359 		}
9360 	}
9361 
9362 	/* No need to attach mpt2sas raid functions template
9363 	 * if hbas_to_enumarate value is two
9364 	 */
9365 	if (hbas_to_enumerate != 2) {
9366 		mpt2sas_raid_template =
9367 				raid_class_attach(&mpt2sas_raid_functions);
9368 		if (!mpt2sas_raid_template) {
9369 			sas_release_transport(mpt3sas_transport_template);
9370 			return -ENODEV;
9371 		}
9372 	}
9373 
9374 	error = scsih_init();
9375 	if (error) {
9376 		scsih_exit();
9377 		return error;
9378 	}
9379 
9380 	mpt3sas_ctl_init(hbas_to_enumerate);
9381 
9382 	error = pci_register_driver(&mpt3sas_driver);
9383 	if (error)
9384 		scsih_exit();
9385 
9386 	return error;
9387 }
9388 
9389 /**
9390  * _mpt3sas_exit - exit point for this driver (when it is a module).
9391  *
9392  */
9393 static void __exit
9394 _mpt3sas_exit(void)
9395 {
9396 	pr_info("mpt3sas version %s unloading\n",
9397 				MPT3SAS_DRIVER_VERSION);
9398 
9399 	pci_unregister_driver(&mpt3sas_driver);
9400 
9401 	mpt3sas_ctl_exit(hbas_to_enumerate);
9402 
9403 	scsih_exit();
9404 }
9405 
9406 module_init(_mpt3sas_init);
9407 module_exit(_mpt3sas_exit);
9408