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/pci-aspm.h>
55 #include <linux/interrupt.h>
56 #include <linux/aer.h>
57 #include <linux/raid_class.h>
58 #include <asm/unaligned.h>
59 
60 #include "mpt3sas_base.h"
61 
62 #define RAID_CHANNEL 1
63 /* forward proto's */
64 static void _scsih_expander_node_remove(struct MPT3SAS_ADAPTER *ioc,
65 	struct _sas_node *sas_expander);
66 static void _firmware_event_work(struct work_struct *work);
67 
68 static void _scsih_remove_device(struct MPT3SAS_ADAPTER *ioc,
69 	struct _sas_device *sas_device);
70 static int _scsih_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle,
71 	u8 retry_count, u8 is_pd);
72 
73 static u8 _scsih_check_for_pending_tm(struct MPT3SAS_ADAPTER *ioc, u16 smid);
74 
75 /* global parameters */
76 LIST_HEAD(mpt3sas_ioc_list);
77 /* global ioc lock for list operations */
78 DEFINE_SPINLOCK(gioc_lock);
79 
80 MODULE_AUTHOR(MPT3SAS_AUTHOR);
81 MODULE_DESCRIPTION(MPT3SAS_DESCRIPTION);
82 MODULE_LICENSE("GPL");
83 MODULE_VERSION(MPT3SAS_DRIVER_VERSION);
84 MODULE_ALIAS("mpt2sas");
85 
86 /* local parameters */
87 static u8 scsi_io_cb_idx = -1;
88 static u8 tm_cb_idx = -1;
89 static u8 ctl_cb_idx = -1;
90 static u8 base_cb_idx = -1;
91 static u8 port_enable_cb_idx = -1;
92 static u8 transport_cb_idx = -1;
93 static u8 scsih_cb_idx = -1;
94 static u8 config_cb_idx = -1;
95 static int mpt2_ids;
96 static int mpt3_ids;
97 
98 static u8 tm_tr_cb_idx = -1 ;
99 static u8 tm_tr_volume_cb_idx = -1 ;
100 static u8 tm_sas_control_cb_idx = -1;
101 
102 /* command line options */
103 static u32 logging_level;
104 MODULE_PARM_DESC(logging_level,
105 	" bits for enabling additional logging info (default=0)");
106 
107 
108 static ushort max_sectors = 0xFFFF;
109 module_param(max_sectors, ushort, 0);
110 MODULE_PARM_DESC(max_sectors, "max sectors, range 64 to 32767  default=32767");
111 
112 
113 static int missing_delay[2] = {-1, -1};
114 module_param_array(missing_delay, int, NULL, 0);
115 MODULE_PARM_DESC(missing_delay, " device missing delay , io missing delay");
116 
117 /* scsi-mid layer global parmeter is max_report_luns, which is 511 */
118 #define MPT3SAS_MAX_LUN (16895)
119 static u64 max_lun = MPT3SAS_MAX_LUN;
120 module_param(max_lun, ullong, 0);
121 MODULE_PARM_DESC(max_lun, " max lun, default=16895 ");
122 
123 static ushort hbas_to_enumerate;
124 module_param(hbas_to_enumerate, ushort, 0);
125 MODULE_PARM_DESC(hbas_to_enumerate,
126 		" 0 - enumerates both SAS 2.0 & SAS 3.0 generation HBAs\n \
127 		  1 - enumerates only SAS 2.0 generation HBAs\n \
128 		  2 - enumerates only SAS 3.0 generation HBAs (default=0)");
129 
130 /* diag_buffer_enable is bitwise
131  * bit 0 set = TRACE
132  * bit 1 set = SNAPSHOT
133  * bit 2 set = EXTENDED
134  *
135  * Either bit can be set, or both
136  */
137 static int diag_buffer_enable = -1;
138 module_param(diag_buffer_enable, int, 0);
139 MODULE_PARM_DESC(diag_buffer_enable,
140 	" post diag buffers (TRACE=1/SNAPSHOT=2/EXTENDED=4/default=0)");
141 static int disable_discovery = -1;
142 module_param(disable_discovery, int, 0);
143 MODULE_PARM_DESC(disable_discovery, " disable discovery ");
144 
145 
146 /* permit overriding the host protection capabilities mask (EEDP/T10 PI) */
147 static int prot_mask = -1;
148 module_param(prot_mask, int, 0);
149 MODULE_PARM_DESC(prot_mask, " host protection capabilities mask, def=7 ");
150 
151 
152 /* raid transport support */
153 struct raid_template *mpt3sas_raid_template;
154 struct raid_template *mpt2sas_raid_template;
155 
156 
157 /**
158  * struct sense_info - common structure for obtaining sense keys
159  * @skey: sense key
160  * @asc: additional sense code
161  * @ascq: additional sense code qualifier
162  */
163 struct sense_info {
164 	u8 skey;
165 	u8 asc;
166 	u8 ascq;
167 };
168 
169 #define MPT3SAS_PROCESS_TRIGGER_DIAG (0xFFFB)
170 #define MPT3SAS_TURN_ON_PFA_LED (0xFFFC)
171 #define MPT3SAS_PORT_ENABLE_COMPLETE (0xFFFD)
172 #define MPT3SAS_ABRT_TASK_SET (0xFFFE)
173 #define MPT3SAS_REMOVE_UNRESPONDING_DEVICES (0xFFFF)
174 /**
175  * struct fw_event_work - firmware event struct
176  * @list: link list framework
177  * @work: work object (ioc->fault_reset_work_q)
178  * @ioc: per adapter object
179  * @device_handle: device handle
180  * @VF_ID: virtual function id
181  * @VP_ID: virtual port id
182  * @ignore: flag meaning this event has been marked to ignore
183  * @event: firmware event MPI2_EVENT_XXX defined in mpi2_ioc.h
184  * @refcount: kref for this event
185  * @event_data: reply event data payload follows
186  *
187  * This object stored on ioc->fw_event_list.
188  */
189 struct fw_event_work {
190 	struct list_head	list;
191 	struct work_struct	work;
192 
193 	struct MPT3SAS_ADAPTER *ioc;
194 	u16			device_handle;
195 	u8			VF_ID;
196 	u8			VP_ID;
197 	u8			ignore;
198 	u16			event;
199 	struct kref		refcount;
200 	char			event_data[0] __aligned(4);
201 };
202 
203 static void fw_event_work_free(struct kref *r)
204 {
205 	kfree(container_of(r, struct fw_event_work, refcount));
206 }
207 
208 static void fw_event_work_get(struct fw_event_work *fw_work)
209 {
210 	kref_get(&fw_work->refcount);
211 }
212 
213 static void fw_event_work_put(struct fw_event_work *fw_work)
214 {
215 	kref_put(&fw_work->refcount, fw_event_work_free);
216 }
217 
218 static struct fw_event_work *alloc_fw_event_work(int len)
219 {
220 	struct fw_event_work *fw_event;
221 
222 	fw_event = kzalloc(sizeof(*fw_event) + len, GFP_ATOMIC);
223 	if (!fw_event)
224 		return NULL;
225 
226 	kref_init(&fw_event->refcount);
227 	return fw_event;
228 }
229 
230 /**
231  * struct _scsi_io_transfer - scsi io transfer
232  * @handle: sas device handle (assigned by firmware)
233  * @is_raid: flag set for hidden raid components
234  * @dir: DMA_TO_DEVICE, DMA_FROM_DEVICE,
235  * @data_length: data transfer length
236  * @data_dma: dma pointer to data
237  * @sense: sense data
238  * @lun: lun number
239  * @cdb_length: cdb length
240  * @cdb: cdb contents
241  * @timeout: timeout for this command
242  * @VF_ID: virtual function id
243  * @VP_ID: virtual port id
244  * @valid_reply: flag set for reply message
245  * @sense_length: sense length
246  * @ioc_status: ioc status
247  * @scsi_state: scsi state
248  * @scsi_status: scsi staus
249  * @log_info: log information
250  * @transfer_length: data length transfer when there is a reply message
251  *
252  * Used for sending internal scsi commands to devices within this module.
253  * Refer to _scsi_send_scsi_io().
254  */
255 struct _scsi_io_transfer {
256 	u16	handle;
257 	u8	is_raid;
258 	enum dma_data_direction dir;
259 	u32	data_length;
260 	dma_addr_t data_dma;
261 	u8	sense[SCSI_SENSE_BUFFERSIZE];
262 	u32	lun;
263 	u8	cdb_length;
264 	u8	cdb[32];
265 	u8	timeout;
266 	u8	VF_ID;
267 	u8	VP_ID;
268 	u8	valid_reply;
269   /* the following bits are only valid when 'valid_reply = 1' */
270 	u32	sense_length;
271 	u16	ioc_status;
272 	u8	scsi_state;
273 	u8	scsi_status;
274 	u32	log_info;
275 	u32	transfer_length;
276 };
277 
278 /**
279  * _scsih_set_debug_level - global setting of ioc->logging_level.
280  *
281  * Note: The logging levels are defined in mpt3sas_debug.h.
282  */
283 static int
284 _scsih_set_debug_level(const char *val, struct kernel_param *kp)
285 {
286 	int ret = param_set_int(val, kp);
287 	struct MPT3SAS_ADAPTER *ioc;
288 
289 	if (ret)
290 		return ret;
291 
292 	pr_info("setting logging_level(0x%08x)\n", logging_level);
293 	spin_lock(&gioc_lock);
294 	list_for_each_entry(ioc, &mpt3sas_ioc_list, list)
295 		ioc->logging_level = logging_level;
296 	spin_unlock(&gioc_lock);
297 	return 0;
298 }
299 module_param_call(logging_level, _scsih_set_debug_level, param_get_int,
300 	&logging_level, 0644);
301 
302 /**
303  * _scsih_srch_boot_sas_address - search based on sas_address
304  * @sas_address: sas address
305  * @boot_device: boot device object from bios page 2
306  *
307  * Returns 1 when there's a match, 0 means no match.
308  */
309 static inline int
310 _scsih_srch_boot_sas_address(u64 sas_address,
311 	Mpi2BootDeviceSasWwid_t *boot_device)
312 {
313 	return (sas_address == le64_to_cpu(boot_device->SASAddress)) ?  1 : 0;
314 }
315 
316 /**
317  * _scsih_srch_boot_device_name - search based on device name
318  * @device_name: device name specified in INDENTIFY fram
319  * @boot_device: boot device object from bios page 2
320  *
321  * Returns 1 when there's a match, 0 means no match.
322  */
323 static inline int
324 _scsih_srch_boot_device_name(u64 device_name,
325 	Mpi2BootDeviceDeviceName_t *boot_device)
326 {
327 	return (device_name == le64_to_cpu(boot_device->DeviceName)) ? 1 : 0;
328 }
329 
330 /**
331  * _scsih_srch_boot_encl_slot - search based on enclosure_logical_id/slot
332  * @enclosure_logical_id: enclosure logical id
333  * @slot_number: slot number
334  * @boot_device: boot device object from bios page 2
335  *
336  * Returns 1 when there's a match, 0 means no match.
337  */
338 static inline int
339 _scsih_srch_boot_encl_slot(u64 enclosure_logical_id, u16 slot_number,
340 	Mpi2BootDeviceEnclosureSlot_t *boot_device)
341 {
342 	return (enclosure_logical_id == le64_to_cpu(boot_device->
343 	    EnclosureLogicalID) && slot_number == le16_to_cpu(boot_device->
344 	    SlotNumber)) ? 1 : 0;
345 }
346 
347 /**
348  * _scsih_is_boot_device - search for matching boot device.
349  * @sas_address: sas address
350  * @device_name: device name specified in INDENTIFY fram
351  * @enclosure_logical_id: enclosure logical id
352  * @slot_number: slot number
353  * @form: specifies boot device form
354  * @boot_device: boot device object from bios page 2
355  *
356  * Returns 1 when there's a match, 0 means no match.
357  */
358 static int
359 _scsih_is_boot_device(u64 sas_address, u64 device_name,
360 	u64 enclosure_logical_id, u16 slot, u8 form,
361 	Mpi2BiosPage2BootDevice_t *boot_device)
362 {
363 	int rc = 0;
364 
365 	switch (form) {
366 	case MPI2_BIOSPAGE2_FORM_SAS_WWID:
367 		if (!sas_address)
368 			break;
369 		rc = _scsih_srch_boot_sas_address(
370 		    sas_address, &boot_device->SasWwid);
371 		break;
372 	case MPI2_BIOSPAGE2_FORM_ENCLOSURE_SLOT:
373 		if (!enclosure_logical_id)
374 			break;
375 		rc = _scsih_srch_boot_encl_slot(
376 		    enclosure_logical_id,
377 		    slot, &boot_device->EnclosureSlot);
378 		break;
379 	case MPI2_BIOSPAGE2_FORM_DEVICE_NAME:
380 		if (!device_name)
381 			break;
382 		rc = _scsih_srch_boot_device_name(
383 		    device_name, &boot_device->DeviceName);
384 		break;
385 	case MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED:
386 		break;
387 	}
388 
389 	return rc;
390 }
391 
392 /**
393  * _scsih_get_sas_address - set the sas_address for given device handle
394  * @handle: device handle
395  * @sas_address: sas address
396  *
397  * Returns 0 success, non-zero when failure
398  */
399 static int
400 _scsih_get_sas_address(struct MPT3SAS_ADAPTER *ioc, u16 handle,
401 	u64 *sas_address)
402 {
403 	Mpi2SasDevicePage0_t sas_device_pg0;
404 	Mpi2ConfigReply_t mpi_reply;
405 	u32 ioc_status;
406 
407 	*sas_address = 0;
408 
409 	if (handle <= ioc->sas_hba.num_phys) {
410 		*sas_address = ioc->sas_hba.sas_address;
411 		return 0;
412 	}
413 
414 	if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
415 	    MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
416 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", ioc->name,
417 		__FILE__, __LINE__, __func__);
418 		return -ENXIO;
419 	}
420 
421 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
422 	if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
423 		*sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
424 		return 0;
425 	}
426 
427 	/* we hit this because the given parent handle doesn't exist */
428 	if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
429 		return -ENXIO;
430 
431 	/* else error case */
432 	pr_err(MPT3SAS_FMT
433 		"handle(0x%04x), ioc_status(0x%04x), failure at %s:%d/%s()!\n",
434 		ioc->name, handle, ioc_status,
435 	     __FILE__, __LINE__, __func__);
436 	return -EIO;
437 }
438 
439 /**
440  * _scsih_determine_boot_device - determine boot device.
441  * @ioc: per adapter object
442  * @device: either sas_device or raid_device object
443  * @is_raid: [flag] 1 = raid object, 0 = sas object
444  *
445  * Determines whether this device should be first reported device to
446  * to scsi-ml or sas transport, this purpose is for persistent boot device.
447  * There are primary, alternate, and current entries in bios page 2. The order
448  * priority is primary, alternate, then current.  This routine saves
449  * the corresponding device object and is_raid flag in the ioc object.
450  * The saved data to be used later in _scsih_probe_boot_devices().
451  */
452 static void
453 _scsih_determine_boot_device(struct MPT3SAS_ADAPTER *ioc,
454 	void *device, u8 is_raid)
455 {
456 	struct _sas_device *sas_device;
457 	struct _raid_device *raid_device;
458 	u64 sas_address;
459 	u64 device_name;
460 	u64 enclosure_logical_id;
461 	u16 slot;
462 
463 	 /* only process this function when driver loads */
464 	if (!ioc->is_driver_loading)
465 		return;
466 
467 	 /* no Bios, return immediately */
468 	if (!ioc->bios_pg3.BiosVersion)
469 		return;
470 
471 	if (!is_raid) {
472 		sas_device = device;
473 		sas_address = sas_device->sas_address;
474 		device_name = sas_device->device_name;
475 		enclosure_logical_id = sas_device->enclosure_logical_id;
476 		slot = sas_device->slot;
477 	} else {
478 		raid_device = device;
479 		sas_address = raid_device->wwid;
480 		device_name = 0;
481 		enclosure_logical_id = 0;
482 		slot = 0;
483 	}
484 
485 	if (!ioc->req_boot_device.device) {
486 		if (_scsih_is_boot_device(sas_address, device_name,
487 		    enclosure_logical_id, slot,
488 		    (ioc->bios_pg2.ReqBootDeviceForm &
489 		    MPI2_BIOSPAGE2_FORM_MASK),
490 		    &ioc->bios_pg2.RequestedBootDevice)) {
491 			dinitprintk(ioc, pr_info(MPT3SAS_FMT
492 			   "%s: req_boot_device(0x%016llx)\n",
493 			    ioc->name, __func__,
494 			    (unsigned long long)sas_address));
495 			ioc->req_boot_device.device = device;
496 			ioc->req_boot_device.is_raid = is_raid;
497 		}
498 	}
499 
500 	if (!ioc->req_alt_boot_device.device) {
501 		if (_scsih_is_boot_device(sas_address, device_name,
502 		    enclosure_logical_id, slot,
503 		    (ioc->bios_pg2.ReqAltBootDeviceForm &
504 		    MPI2_BIOSPAGE2_FORM_MASK),
505 		    &ioc->bios_pg2.RequestedAltBootDevice)) {
506 			dinitprintk(ioc, pr_info(MPT3SAS_FMT
507 			   "%s: req_alt_boot_device(0x%016llx)\n",
508 			    ioc->name, __func__,
509 			    (unsigned long long)sas_address));
510 			ioc->req_alt_boot_device.device = device;
511 			ioc->req_alt_boot_device.is_raid = is_raid;
512 		}
513 	}
514 
515 	if (!ioc->current_boot_device.device) {
516 		if (_scsih_is_boot_device(sas_address, device_name,
517 		    enclosure_logical_id, slot,
518 		    (ioc->bios_pg2.CurrentBootDeviceForm &
519 		    MPI2_BIOSPAGE2_FORM_MASK),
520 		    &ioc->bios_pg2.CurrentBootDevice)) {
521 			dinitprintk(ioc, pr_info(MPT3SAS_FMT
522 			   "%s: current_boot_device(0x%016llx)\n",
523 			    ioc->name, __func__,
524 			    (unsigned long long)sas_address));
525 			ioc->current_boot_device.device = device;
526 			ioc->current_boot_device.is_raid = is_raid;
527 		}
528 	}
529 }
530 
531 static struct _sas_device *
532 __mpt3sas_get_sdev_from_target(struct MPT3SAS_ADAPTER *ioc,
533 		struct MPT3SAS_TARGET *tgt_priv)
534 {
535 	struct _sas_device *ret;
536 
537 	assert_spin_locked(&ioc->sas_device_lock);
538 
539 	ret = tgt_priv->sdev;
540 	if (ret)
541 		sas_device_get(ret);
542 
543 	return ret;
544 }
545 
546 static struct _sas_device *
547 mpt3sas_get_sdev_from_target(struct MPT3SAS_ADAPTER *ioc,
548 		struct MPT3SAS_TARGET *tgt_priv)
549 {
550 	struct _sas_device *ret;
551 	unsigned long flags;
552 
553 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
554 	ret = __mpt3sas_get_sdev_from_target(ioc, tgt_priv);
555 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
556 
557 	return ret;
558 }
559 
560 
561 struct _sas_device *
562 __mpt3sas_get_sdev_by_addr(struct MPT3SAS_ADAPTER *ioc,
563 					u64 sas_address)
564 {
565 	struct _sas_device *sas_device;
566 
567 	assert_spin_locked(&ioc->sas_device_lock);
568 
569 	list_for_each_entry(sas_device, &ioc->sas_device_list, list)
570 		if (sas_device->sas_address == sas_address)
571 			goto found_device;
572 
573 	list_for_each_entry(sas_device, &ioc->sas_device_init_list, list)
574 		if (sas_device->sas_address == sas_address)
575 			goto found_device;
576 
577 	return NULL;
578 
579 found_device:
580 	sas_device_get(sas_device);
581 	return sas_device;
582 }
583 
584 /**
585  * mpt3sas_get_sdev_by_addr - sas device search
586  * @ioc: per adapter object
587  * @sas_address: sas address
588  * Context: Calling function should acquire ioc->sas_device_lock
589  *
590  * This searches for sas_device based on sas_address, then return sas_device
591  * object.
592  */
593 struct _sas_device *
594 mpt3sas_get_sdev_by_addr(struct MPT3SAS_ADAPTER *ioc,
595 	u64 sas_address)
596 {
597 	struct _sas_device *sas_device;
598 	unsigned long flags;
599 
600 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
601 	sas_device = __mpt3sas_get_sdev_by_addr(ioc,
602 			sas_address);
603 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
604 
605 	return sas_device;
606 }
607 
608 static struct _sas_device *
609 __mpt3sas_get_sdev_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
610 {
611 	struct _sas_device *sas_device;
612 
613 	assert_spin_locked(&ioc->sas_device_lock);
614 
615 	list_for_each_entry(sas_device, &ioc->sas_device_list, list)
616 		if (sas_device->handle == handle)
617 			goto found_device;
618 
619 	list_for_each_entry(sas_device, &ioc->sas_device_init_list, list)
620 		if (sas_device->handle == handle)
621 			goto found_device;
622 
623 	return NULL;
624 
625 found_device:
626 	sas_device_get(sas_device);
627 	return sas_device;
628 }
629 
630 /**
631  * mpt3sas_get_sdev_by_handle - sas device search
632  * @ioc: per adapter object
633  * @handle: sas device handle (assigned by firmware)
634  * Context: Calling function should acquire ioc->sas_device_lock
635  *
636  * This searches for sas_device based on sas_address, then return sas_device
637  * object.
638  */
639 static struct _sas_device *
640 mpt3sas_get_sdev_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
641 {
642 	struct _sas_device *sas_device;
643 	unsigned long flags;
644 
645 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
646 	sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
647 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
648 
649 	return sas_device;
650 }
651 
652 /**
653  * _scsih_sas_device_remove - remove sas_device from list.
654  * @ioc: per adapter object
655  * @sas_device: the sas_device object
656  * Context: This function will acquire ioc->sas_device_lock.
657  *
658  * If sas_device is on the list, remove it and decrement its reference count.
659  */
660 static void
661 _scsih_sas_device_remove(struct MPT3SAS_ADAPTER *ioc,
662 	struct _sas_device *sas_device)
663 {
664 	unsigned long flags;
665 
666 	if (!sas_device)
667 		return;
668 	pr_info(MPT3SAS_FMT
669 	    "removing handle(0x%04x), sas_addr(0x%016llx)\n",
670 	    ioc->name, sas_device->handle,
671 	    (unsigned long long) sas_device->sas_address);
672 
673 	if (sas_device->enclosure_handle != 0)
674 		pr_info(MPT3SAS_FMT
675 		   "removing enclosure logical id(0x%016llx), slot(%d)\n",
676 		   ioc->name, (unsigned long long)
677 		   sas_device->enclosure_logical_id, sas_device->slot);
678 
679 	if (sas_device->connector_name[0] != '\0')
680 		pr_info(MPT3SAS_FMT
681 		   "removing enclosure level(0x%04x), connector name( %s)\n",
682 		   ioc->name, sas_device->enclosure_level,
683 		   sas_device->connector_name);
684 
685 	/*
686 	 * The lock serializes access to the list, but we still need to verify
687 	 * that nobody removed the entry while we were waiting on the lock.
688 	 */
689 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
690 	if (!list_empty(&sas_device->list)) {
691 		list_del_init(&sas_device->list);
692 		sas_device_put(sas_device);
693 	}
694 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
695 }
696 
697 /**
698  * _scsih_device_remove_by_handle - removing device object by handle
699  * @ioc: per adapter object
700  * @handle: device handle
701  *
702  * Return nothing.
703  */
704 static void
705 _scsih_device_remove_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
706 {
707 	struct _sas_device *sas_device;
708 	unsigned long flags;
709 
710 	if (ioc->shost_recovery)
711 		return;
712 
713 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
714 	sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
715 	if (sas_device) {
716 		list_del_init(&sas_device->list);
717 		sas_device_put(sas_device);
718 	}
719 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
720 	if (sas_device) {
721 		_scsih_remove_device(ioc, sas_device);
722 		sas_device_put(sas_device);
723 	}
724 }
725 
726 /**
727  * mpt3sas_device_remove_by_sas_address - removing device object by sas address
728  * @ioc: per adapter object
729  * @sas_address: device sas_address
730  *
731  * Return nothing.
732  */
733 void
734 mpt3sas_device_remove_by_sas_address(struct MPT3SAS_ADAPTER *ioc,
735 	u64 sas_address)
736 {
737 	struct _sas_device *sas_device;
738 	unsigned long flags;
739 
740 	if (ioc->shost_recovery)
741 		return;
742 
743 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
744 	sas_device = __mpt3sas_get_sdev_by_addr(ioc, sas_address);
745 	if (sas_device) {
746 		list_del_init(&sas_device->list);
747 		sas_device_put(sas_device);
748 	}
749 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
750 	if (sas_device) {
751 		_scsih_remove_device(ioc, sas_device);
752 		sas_device_put(sas_device);
753 	}
754 }
755 
756 /**
757  * _scsih_sas_device_add - insert sas_device to the list.
758  * @ioc: per adapter object
759  * @sas_device: the sas_device object
760  * Context: This function will acquire ioc->sas_device_lock.
761  *
762  * Adding new object to the ioc->sas_device_list.
763  */
764 static void
765 _scsih_sas_device_add(struct MPT3SAS_ADAPTER *ioc,
766 	struct _sas_device *sas_device)
767 {
768 	unsigned long flags;
769 
770 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
771 		"%s: handle(0x%04x), sas_addr(0x%016llx)\n",
772 		ioc->name, __func__, sas_device->handle,
773 		(unsigned long long)sas_device->sas_address));
774 
775 	if (sas_device->enclosure_handle != 0)
776 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
777 		    "%s: enclosure logical id(0x%016llx), slot( %d)\n",
778 		    ioc->name, __func__, (unsigned long long)
779 		    sas_device->enclosure_logical_id, sas_device->slot));
780 
781 	if (sas_device->connector_name[0] != '\0')
782 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
783 		    "%s: enclosure level(0x%04x), connector name( %s)\n",
784 		    ioc->name, __func__,
785 		    sas_device->enclosure_level, sas_device->connector_name));
786 
787 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
788 	sas_device_get(sas_device);
789 	list_add_tail(&sas_device->list, &ioc->sas_device_list);
790 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
791 
792 	if (ioc->hide_drives) {
793 		clear_bit(sas_device->handle, ioc->pend_os_device_add);
794 		return;
795 	}
796 
797 	if (!mpt3sas_transport_port_add(ioc, sas_device->handle,
798 	     sas_device->sas_address_parent)) {
799 		_scsih_sas_device_remove(ioc, sas_device);
800 	} else if (!sas_device->starget) {
801 		/*
802 		 * When asyn scanning is enabled, its not possible to remove
803 		 * devices while scanning is turned on due to an oops in
804 		 * scsi_sysfs_add_sdev()->add_device()->sysfs_addrm_start()
805 		 */
806 		if (!ioc->is_driver_loading) {
807 			mpt3sas_transport_port_remove(ioc,
808 			    sas_device->sas_address,
809 			    sas_device->sas_address_parent);
810 			_scsih_sas_device_remove(ioc, sas_device);
811 		}
812 	} else
813 		clear_bit(sas_device->handle, ioc->pend_os_device_add);
814 }
815 
816 /**
817  * _scsih_sas_device_init_add - insert sas_device to the list.
818  * @ioc: per adapter object
819  * @sas_device: the sas_device object
820  * Context: This function will acquire ioc->sas_device_lock.
821  *
822  * Adding new object at driver load time to the ioc->sas_device_init_list.
823  */
824 static void
825 _scsih_sas_device_init_add(struct MPT3SAS_ADAPTER *ioc,
826 	struct _sas_device *sas_device)
827 {
828 	unsigned long flags;
829 
830 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
831 		"%s: handle(0x%04x), sas_addr(0x%016llx)\n", ioc->name,
832 		__func__, sas_device->handle,
833 		(unsigned long long)sas_device->sas_address));
834 
835 	if (sas_device->enclosure_handle != 0)
836 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
837 		    "%s: enclosure logical id(0x%016llx), slot( %d)\n",
838 		    ioc->name, __func__, (unsigned long long)
839 		    sas_device->enclosure_logical_id, sas_device->slot));
840 
841 	if (sas_device->connector_name[0] != '\0')
842 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
843 		    "%s: enclosure level(0x%04x), connector name( %s)\n",
844 		    ioc->name, __func__, sas_device->enclosure_level,
845 		    sas_device->connector_name));
846 
847 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
848 	sas_device_get(sas_device);
849 	list_add_tail(&sas_device->list, &ioc->sas_device_init_list);
850 	_scsih_determine_boot_device(ioc, sas_device, 0);
851 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
852 }
853 
854 /**
855  * _scsih_raid_device_find_by_id - raid device search
856  * @ioc: per adapter object
857  * @id: sas device target id
858  * @channel: sas device channel
859  * Context: Calling function should acquire ioc->raid_device_lock
860  *
861  * This searches for raid_device based on target id, then return raid_device
862  * object.
863  */
864 static struct _raid_device *
865 _scsih_raid_device_find_by_id(struct MPT3SAS_ADAPTER *ioc, int id, int channel)
866 {
867 	struct _raid_device *raid_device, *r;
868 
869 	r = NULL;
870 	list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
871 		if (raid_device->id == id && raid_device->channel == channel) {
872 			r = raid_device;
873 			goto out;
874 		}
875 	}
876 
877  out:
878 	return r;
879 }
880 
881 /**
882  * mpt3sas_raid_device_find_by_handle - raid device search
883  * @ioc: per adapter object
884  * @handle: sas device handle (assigned by firmware)
885  * Context: Calling function should acquire ioc->raid_device_lock
886  *
887  * This searches for raid_device based on handle, then return raid_device
888  * object.
889  */
890 struct _raid_device *
891 mpt3sas_raid_device_find_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
892 {
893 	struct _raid_device *raid_device, *r;
894 
895 	r = NULL;
896 	list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
897 		if (raid_device->handle != handle)
898 			continue;
899 		r = raid_device;
900 		goto out;
901 	}
902 
903  out:
904 	return r;
905 }
906 
907 /**
908  * _scsih_raid_device_find_by_wwid - raid device search
909  * @ioc: per adapter object
910  * @handle: sas device handle (assigned by firmware)
911  * Context: Calling function should acquire ioc->raid_device_lock
912  *
913  * This searches for raid_device based on wwid, then return raid_device
914  * object.
915  */
916 static struct _raid_device *
917 _scsih_raid_device_find_by_wwid(struct MPT3SAS_ADAPTER *ioc, u64 wwid)
918 {
919 	struct _raid_device *raid_device, *r;
920 
921 	r = NULL;
922 	list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
923 		if (raid_device->wwid != wwid)
924 			continue;
925 		r = raid_device;
926 		goto out;
927 	}
928 
929  out:
930 	return r;
931 }
932 
933 /**
934  * _scsih_raid_device_add - add raid_device object
935  * @ioc: per adapter object
936  * @raid_device: raid_device object
937  *
938  * This is added to the raid_device_list link list.
939  */
940 static void
941 _scsih_raid_device_add(struct MPT3SAS_ADAPTER *ioc,
942 	struct _raid_device *raid_device)
943 {
944 	unsigned long flags;
945 
946 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
947 		"%s: handle(0x%04x), wwid(0x%016llx)\n", ioc->name, __func__,
948 	    raid_device->handle, (unsigned long long)raid_device->wwid));
949 
950 	spin_lock_irqsave(&ioc->raid_device_lock, flags);
951 	list_add_tail(&raid_device->list, &ioc->raid_device_list);
952 	spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
953 }
954 
955 /**
956  * _scsih_raid_device_remove - delete raid_device object
957  * @ioc: per adapter object
958  * @raid_device: raid_device object
959  *
960  */
961 static void
962 _scsih_raid_device_remove(struct MPT3SAS_ADAPTER *ioc,
963 	struct _raid_device *raid_device)
964 {
965 	unsigned long flags;
966 
967 	spin_lock_irqsave(&ioc->raid_device_lock, flags);
968 	list_del(&raid_device->list);
969 	kfree(raid_device);
970 	spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
971 }
972 
973 /**
974  * mpt3sas_scsih_expander_find_by_handle - expander device search
975  * @ioc: per adapter object
976  * @handle: expander handle (assigned by firmware)
977  * Context: Calling function should acquire ioc->sas_device_lock
978  *
979  * This searches for expander device based on handle, then returns the
980  * sas_node object.
981  */
982 struct _sas_node *
983 mpt3sas_scsih_expander_find_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
984 {
985 	struct _sas_node *sas_expander, *r;
986 
987 	r = NULL;
988 	list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
989 		if (sas_expander->handle != handle)
990 			continue;
991 		r = sas_expander;
992 		goto out;
993 	}
994  out:
995 	return r;
996 }
997 
998 /**
999  * mpt3sas_scsih_expander_find_by_sas_address - expander device search
1000  * @ioc: per adapter object
1001  * @sas_address: sas address
1002  * Context: Calling function should acquire ioc->sas_node_lock.
1003  *
1004  * This searches for expander device based on sas_address, then returns the
1005  * sas_node object.
1006  */
1007 struct _sas_node *
1008 mpt3sas_scsih_expander_find_by_sas_address(struct MPT3SAS_ADAPTER *ioc,
1009 	u64 sas_address)
1010 {
1011 	struct _sas_node *sas_expander, *r;
1012 
1013 	r = NULL;
1014 	list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
1015 		if (sas_expander->sas_address != sas_address)
1016 			continue;
1017 		r = sas_expander;
1018 		goto out;
1019 	}
1020  out:
1021 	return r;
1022 }
1023 
1024 /**
1025  * _scsih_expander_node_add - insert expander device to the list.
1026  * @ioc: per adapter object
1027  * @sas_expander: the sas_device object
1028  * Context: This function will acquire ioc->sas_node_lock.
1029  *
1030  * Adding new object to the ioc->sas_expander_list.
1031  *
1032  * Return nothing.
1033  */
1034 static void
1035 _scsih_expander_node_add(struct MPT3SAS_ADAPTER *ioc,
1036 	struct _sas_node *sas_expander)
1037 {
1038 	unsigned long flags;
1039 
1040 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
1041 	list_add_tail(&sas_expander->list, &ioc->sas_expander_list);
1042 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1043 }
1044 
1045 /**
1046  * _scsih_is_end_device - determines if device is an end device
1047  * @device_info: bitfield providing information about the device.
1048  * Context: none
1049  *
1050  * Returns 1 if end device.
1051  */
1052 static int
1053 _scsih_is_end_device(u32 device_info)
1054 {
1055 	if (device_info & MPI2_SAS_DEVICE_INFO_END_DEVICE &&
1056 		((device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET) |
1057 		(device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET) |
1058 		(device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)))
1059 		return 1;
1060 	else
1061 		return 0;
1062 }
1063 
1064 /**
1065  * _scsih_scsi_lookup_get - returns scmd entry
1066  * @ioc: per adapter object
1067  * @smid: system request message index
1068  *
1069  * Returns the smid stored scmd pointer.
1070  */
1071 static struct scsi_cmnd *
1072 _scsih_scsi_lookup_get(struct MPT3SAS_ADAPTER *ioc, u16 smid)
1073 {
1074 	return ioc->scsi_lookup[smid - 1].scmd;
1075 }
1076 
1077 /**
1078  * __scsih_scsi_lookup_get_clear - returns scmd entry without
1079  *						holding any lock.
1080  * @ioc: per adapter object
1081  * @smid: system request message index
1082  *
1083  * Returns the smid stored scmd pointer.
1084  * Then will dereference the stored scmd pointer.
1085  */
1086 static inline struct scsi_cmnd *
1087 __scsih_scsi_lookup_get_clear(struct MPT3SAS_ADAPTER *ioc,
1088 		u16 smid)
1089 {
1090 	struct scsi_cmnd *scmd = NULL;
1091 
1092 	swap(scmd, ioc->scsi_lookup[smid - 1].scmd);
1093 
1094 	return scmd;
1095 }
1096 
1097 /**
1098  * _scsih_scsi_lookup_get_clear - returns scmd entry
1099  * @ioc: per adapter object
1100  * @smid: system request message index
1101  *
1102  * Returns the smid stored scmd pointer.
1103  * Then will derefrence the stored scmd pointer.
1104  */
1105 static inline struct scsi_cmnd *
1106 _scsih_scsi_lookup_get_clear(struct MPT3SAS_ADAPTER *ioc, u16 smid)
1107 {
1108 	unsigned long flags;
1109 	struct scsi_cmnd *scmd;
1110 
1111 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1112 	scmd = __scsih_scsi_lookup_get_clear(ioc, smid);
1113 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1114 
1115 	return scmd;
1116 }
1117 
1118 /**
1119  * _scsih_scsi_lookup_find_by_scmd - scmd lookup
1120  * @ioc: per adapter object
1121  * @smid: system request message index
1122  * @scmd: pointer to scsi command object
1123  * Context: This function will acquire ioc->scsi_lookup_lock.
1124  *
1125  * This will search for a scmd pointer in the scsi_lookup array,
1126  * returning the revelent smid.  A returned value of zero means invalid.
1127  */
1128 static u16
1129 _scsih_scsi_lookup_find_by_scmd(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd
1130 	*scmd)
1131 {
1132 	u16 smid;
1133 	unsigned long	flags;
1134 	int i;
1135 
1136 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1137 	smid = 0;
1138 	for (i = 0; i < ioc->scsiio_depth; i++) {
1139 		if (ioc->scsi_lookup[i].scmd == scmd) {
1140 			smid = ioc->scsi_lookup[i].smid;
1141 			goto out;
1142 		}
1143 	}
1144  out:
1145 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1146 	return smid;
1147 }
1148 
1149 /**
1150  * _scsih_scsi_lookup_find_by_target - search for matching channel:id
1151  * @ioc: per adapter object
1152  * @id: target id
1153  * @channel: channel
1154  * Context: This function will acquire ioc->scsi_lookup_lock.
1155  *
1156  * This will search for a matching channel:id in the scsi_lookup array,
1157  * returning 1 if found.
1158  */
1159 static u8
1160 _scsih_scsi_lookup_find_by_target(struct MPT3SAS_ADAPTER *ioc, int id,
1161 	int channel)
1162 {
1163 	u8 found;
1164 	unsigned long	flags;
1165 	int i;
1166 
1167 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1168 	found = 0;
1169 	for (i = 0 ; i < ioc->scsiio_depth; i++) {
1170 		if (ioc->scsi_lookup[i].scmd &&
1171 		    (ioc->scsi_lookup[i].scmd->device->id == id &&
1172 		    ioc->scsi_lookup[i].scmd->device->channel == channel)) {
1173 			found = 1;
1174 			goto out;
1175 		}
1176 	}
1177  out:
1178 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1179 	return found;
1180 }
1181 
1182 /**
1183  * _scsih_scsi_lookup_find_by_lun - search for matching channel:id:lun
1184  * @ioc: per adapter object
1185  * @id: target id
1186  * @lun: lun number
1187  * @channel: channel
1188  * Context: This function will acquire ioc->scsi_lookup_lock.
1189  *
1190  * This will search for a matching channel:id:lun in the scsi_lookup array,
1191  * returning 1 if found.
1192  */
1193 static u8
1194 _scsih_scsi_lookup_find_by_lun(struct MPT3SAS_ADAPTER *ioc, int id,
1195 	unsigned int lun, int channel)
1196 {
1197 	u8 found;
1198 	unsigned long	flags;
1199 	int i;
1200 
1201 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1202 	found = 0;
1203 	for (i = 0 ; i < ioc->scsiio_depth; i++) {
1204 		if (ioc->scsi_lookup[i].scmd &&
1205 		    (ioc->scsi_lookup[i].scmd->device->id == id &&
1206 		    ioc->scsi_lookup[i].scmd->device->channel == channel &&
1207 		    ioc->scsi_lookup[i].scmd->device->lun == lun)) {
1208 			found = 1;
1209 			goto out;
1210 		}
1211 	}
1212  out:
1213 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1214 	return found;
1215 }
1216 
1217 /**
1218  * scsih_change_queue_depth - setting device queue depth
1219  * @sdev: scsi device struct
1220  * @qdepth: requested queue depth
1221  *
1222  * Returns queue depth.
1223  */
1224 static int
1225 scsih_change_queue_depth(struct scsi_device *sdev, int qdepth)
1226 {
1227 	struct Scsi_Host *shost = sdev->host;
1228 	int max_depth;
1229 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1230 	struct MPT3SAS_DEVICE *sas_device_priv_data;
1231 	struct MPT3SAS_TARGET *sas_target_priv_data;
1232 	struct _sas_device *sas_device;
1233 	unsigned long flags;
1234 
1235 	max_depth = shost->can_queue;
1236 
1237 	/* limit max device queue for SATA to 32 */
1238 	sas_device_priv_data = sdev->hostdata;
1239 	if (!sas_device_priv_data)
1240 		goto not_sata;
1241 	sas_target_priv_data = sas_device_priv_data->sas_target;
1242 	if (!sas_target_priv_data)
1243 		goto not_sata;
1244 	if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME))
1245 		goto not_sata;
1246 
1247 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
1248 	sas_device = __mpt3sas_get_sdev_from_target(ioc, sas_target_priv_data);
1249 	if (sas_device) {
1250 		if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
1251 			max_depth = MPT3SAS_SATA_QUEUE_DEPTH;
1252 
1253 		sas_device_put(sas_device);
1254 	}
1255 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1256 
1257  not_sata:
1258 
1259 	if (!sdev->tagged_supported)
1260 		max_depth = 1;
1261 	if (qdepth > max_depth)
1262 		qdepth = max_depth;
1263 	return scsi_change_queue_depth(sdev, qdepth);
1264 }
1265 
1266 /**
1267  * scsih_target_alloc - target add routine
1268  * @starget: scsi target struct
1269  *
1270  * Returns 0 if ok. Any other return is assumed to be an error and
1271  * the device is ignored.
1272  */
1273 static int
1274 scsih_target_alloc(struct scsi_target *starget)
1275 {
1276 	struct Scsi_Host *shost = dev_to_shost(&starget->dev);
1277 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1278 	struct MPT3SAS_TARGET *sas_target_priv_data;
1279 	struct _sas_device *sas_device;
1280 	struct _raid_device *raid_device;
1281 	unsigned long flags;
1282 	struct sas_rphy *rphy;
1283 
1284 	sas_target_priv_data = kzalloc(sizeof(*sas_target_priv_data),
1285 				       GFP_KERNEL);
1286 	if (!sas_target_priv_data)
1287 		return -ENOMEM;
1288 
1289 	starget->hostdata = sas_target_priv_data;
1290 	sas_target_priv_data->starget = starget;
1291 	sas_target_priv_data->handle = MPT3SAS_INVALID_DEVICE_HANDLE;
1292 
1293 	/* RAID volumes */
1294 	if (starget->channel == RAID_CHANNEL) {
1295 		spin_lock_irqsave(&ioc->raid_device_lock, flags);
1296 		raid_device = _scsih_raid_device_find_by_id(ioc, starget->id,
1297 		    starget->channel);
1298 		if (raid_device) {
1299 			sas_target_priv_data->handle = raid_device->handle;
1300 			sas_target_priv_data->sas_address = raid_device->wwid;
1301 			sas_target_priv_data->flags |= MPT_TARGET_FLAGS_VOLUME;
1302 			if (ioc->is_warpdrive)
1303 				sas_target_priv_data->raid_device = raid_device;
1304 			raid_device->starget = starget;
1305 		}
1306 		spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1307 		return 0;
1308 	}
1309 
1310 	/* sas/sata devices */
1311 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
1312 	rphy = dev_to_rphy(starget->dev.parent);
1313 	sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1314 	   rphy->identify.sas_address);
1315 
1316 	if (sas_device) {
1317 		sas_target_priv_data->handle = sas_device->handle;
1318 		sas_target_priv_data->sas_address = sas_device->sas_address;
1319 		sas_target_priv_data->sdev = sas_device;
1320 		sas_device->starget = starget;
1321 		sas_device->id = starget->id;
1322 		sas_device->channel = starget->channel;
1323 		if (test_bit(sas_device->handle, ioc->pd_handles))
1324 			sas_target_priv_data->flags |=
1325 			    MPT_TARGET_FLAGS_RAID_COMPONENT;
1326 		if (sas_device->fast_path)
1327 			sas_target_priv_data->flags |= MPT_TARGET_FASTPATH_IO;
1328 	}
1329 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1330 
1331 	return 0;
1332 }
1333 
1334 /**
1335  * scsih_target_destroy - target destroy routine
1336  * @starget: scsi target struct
1337  *
1338  * Returns nothing.
1339  */
1340 static void
1341 scsih_target_destroy(struct scsi_target *starget)
1342 {
1343 	struct Scsi_Host *shost = dev_to_shost(&starget->dev);
1344 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1345 	struct MPT3SAS_TARGET *sas_target_priv_data;
1346 	struct _sas_device *sas_device;
1347 	struct _raid_device *raid_device;
1348 	unsigned long flags;
1349 
1350 	sas_target_priv_data = starget->hostdata;
1351 	if (!sas_target_priv_data)
1352 		return;
1353 
1354 	if (starget->channel == RAID_CHANNEL) {
1355 		spin_lock_irqsave(&ioc->raid_device_lock, flags);
1356 		raid_device = _scsih_raid_device_find_by_id(ioc, starget->id,
1357 		    starget->channel);
1358 		if (raid_device) {
1359 			raid_device->starget = NULL;
1360 			raid_device->sdev = NULL;
1361 		}
1362 		spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1363 		goto out;
1364 	}
1365 
1366 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
1367 	sas_device = __mpt3sas_get_sdev_from_target(ioc, sas_target_priv_data);
1368 	if (sas_device && (sas_device->starget == starget) &&
1369 	    (sas_device->id == starget->id) &&
1370 	    (sas_device->channel == starget->channel))
1371 		sas_device->starget = NULL;
1372 
1373 	if (sas_device) {
1374 		/*
1375 		 * Corresponding get() is in _scsih_target_alloc()
1376 		 */
1377 		sas_target_priv_data->sdev = NULL;
1378 		sas_device_put(sas_device);
1379 
1380 		sas_device_put(sas_device);
1381 	}
1382 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1383 
1384  out:
1385 	kfree(sas_target_priv_data);
1386 	starget->hostdata = NULL;
1387 }
1388 
1389 /**
1390  * scsih_slave_alloc - device add routine
1391  * @sdev: scsi device struct
1392  *
1393  * Returns 0 if ok. Any other return is assumed to be an error and
1394  * the device is ignored.
1395  */
1396 static int
1397 scsih_slave_alloc(struct scsi_device *sdev)
1398 {
1399 	struct Scsi_Host *shost;
1400 	struct MPT3SAS_ADAPTER *ioc;
1401 	struct MPT3SAS_TARGET *sas_target_priv_data;
1402 	struct MPT3SAS_DEVICE *sas_device_priv_data;
1403 	struct scsi_target *starget;
1404 	struct _raid_device *raid_device;
1405 	struct _sas_device *sas_device;
1406 	unsigned long flags;
1407 
1408 	sas_device_priv_data = kzalloc(sizeof(*sas_device_priv_data),
1409 				       GFP_KERNEL);
1410 	if (!sas_device_priv_data)
1411 		return -ENOMEM;
1412 
1413 	sas_device_priv_data->lun = sdev->lun;
1414 	sas_device_priv_data->flags = MPT_DEVICE_FLAGS_INIT;
1415 
1416 	starget = scsi_target(sdev);
1417 	sas_target_priv_data = starget->hostdata;
1418 	sas_target_priv_data->num_luns++;
1419 	sas_device_priv_data->sas_target = sas_target_priv_data;
1420 	sdev->hostdata = sas_device_priv_data;
1421 	if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT))
1422 		sdev->no_uld_attach = 1;
1423 
1424 	shost = dev_to_shost(&starget->dev);
1425 	ioc = shost_priv(shost);
1426 	if (starget->channel == RAID_CHANNEL) {
1427 		spin_lock_irqsave(&ioc->raid_device_lock, flags);
1428 		raid_device = _scsih_raid_device_find_by_id(ioc,
1429 		    starget->id, starget->channel);
1430 		if (raid_device)
1431 			raid_device->sdev = sdev; /* raid is single lun */
1432 		spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1433 	}
1434 
1435 	if (!(sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)) {
1436 		spin_lock_irqsave(&ioc->sas_device_lock, flags);
1437 		sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1438 					sas_target_priv_data->sas_address);
1439 		if (sas_device && (sas_device->starget == NULL)) {
1440 			sdev_printk(KERN_INFO, sdev,
1441 			"%s : sas_device->starget set to starget @ %d\n",
1442 			     __func__, __LINE__);
1443 			sas_device->starget = starget;
1444 		}
1445 
1446 		if (sas_device)
1447 			sas_device_put(sas_device);
1448 
1449 		spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1450 	}
1451 
1452 	return 0;
1453 }
1454 
1455 /**
1456  * scsih_slave_destroy - device destroy routine
1457  * @sdev: scsi device struct
1458  *
1459  * Returns nothing.
1460  */
1461 static void
1462 scsih_slave_destroy(struct scsi_device *sdev)
1463 {
1464 	struct MPT3SAS_TARGET *sas_target_priv_data;
1465 	struct scsi_target *starget;
1466 	struct Scsi_Host *shost;
1467 	struct MPT3SAS_ADAPTER *ioc;
1468 	struct _sas_device *sas_device;
1469 	unsigned long flags;
1470 
1471 	if (!sdev->hostdata)
1472 		return;
1473 
1474 	starget = scsi_target(sdev);
1475 	sas_target_priv_data = starget->hostdata;
1476 	sas_target_priv_data->num_luns--;
1477 
1478 	shost = dev_to_shost(&starget->dev);
1479 	ioc = shost_priv(shost);
1480 
1481 	if (!(sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)) {
1482 		spin_lock_irqsave(&ioc->sas_device_lock, flags);
1483 		sas_device = __mpt3sas_get_sdev_from_target(ioc,
1484 				sas_target_priv_data);
1485 		if (sas_device && !sas_target_priv_data->num_luns)
1486 			sas_device->starget = NULL;
1487 
1488 		if (sas_device)
1489 			sas_device_put(sas_device);
1490 		spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1491 	}
1492 
1493 	kfree(sdev->hostdata);
1494 	sdev->hostdata = NULL;
1495 }
1496 
1497 /**
1498  * _scsih_display_sata_capabilities - sata capabilities
1499  * @ioc: per adapter object
1500  * @handle: device handle
1501  * @sdev: scsi device struct
1502  */
1503 static void
1504 _scsih_display_sata_capabilities(struct MPT3SAS_ADAPTER *ioc,
1505 	u16 handle, struct scsi_device *sdev)
1506 {
1507 	Mpi2ConfigReply_t mpi_reply;
1508 	Mpi2SasDevicePage0_t sas_device_pg0;
1509 	u32 ioc_status;
1510 	u16 flags;
1511 	u32 device_info;
1512 
1513 	if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
1514 	    MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
1515 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1516 		    ioc->name, __FILE__, __LINE__, __func__);
1517 		return;
1518 	}
1519 
1520 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1521 	    MPI2_IOCSTATUS_MASK;
1522 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1523 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1524 		    ioc->name, __FILE__, __LINE__, __func__);
1525 		return;
1526 	}
1527 
1528 	flags = le16_to_cpu(sas_device_pg0.Flags);
1529 	device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
1530 
1531 	sdev_printk(KERN_INFO, sdev,
1532 	    "atapi(%s), ncq(%s), asyn_notify(%s), smart(%s), fua(%s), "
1533 	    "sw_preserve(%s)\n",
1534 	    (device_info & MPI2_SAS_DEVICE_INFO_ATAPI_DEVICE) ? "y" : "n",
1535 	    (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_NCQ_SUPPORTED) ? "y" : "n",
1536 	    (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_ASYNCHRONOUS_NOTIFY) ? "y" :
1537 	    "n",
1538 	    (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_SMART_SUPPORTED) ? "y" : "n",
1539 	    (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_FUA_SUPPORTED) ? "y" : "n",
1540 	    (flags & MPI2_SAS_DEVICE0_FLAGS_SATA_SW_PRESERVE) ? "y" : "n");
1541 }
1542 
1543 /*
1544  * raid transport support -
1545  * Enabled for SLES11 and newer, in older kernels the driver will panic when
1546  * unloading the driver followed by a load - I believe that the subroutine
1547  * raid_class_release() is not cleaning up properly.
1548  */
1549 
1550 /**
1551  * scsih_is_raid - return boolean indicating device is raid volume
1552  * @dev the device struct object
1553  */
1554 static int
1555 scsih_is_raid(struct device *dev)
1556 {
1557 	struct scsi_device *sdev = to_scsi_device(dev);
1558 	struct MPT3SAS_ADAPTER *ioc = shost_priv(sdev->host);
1559 
1560 	if (ioc->is_warpdrive)
1561 		return 0;
1562 	return (sdev->channel == RAID_CHANNEL) ? 1 : 0;
1563 }
1564 
1565 /**
1566  * scsih_get_resync - get raid volume resync percent complete
1567  * @dev the device struct object
1568  */
1569 static void
1570 scsih_get_resync(struct device *dev)
1571 {
1572 	struct scsi_device *sdev = to_scsi_device(dev);
1573 	struct MPT3SAS_ADAPTER *ioc = shost_priv(sdev->host);
1574 	static struct _raid_device *raid_device;
1575 	unsigned long flags;
1576 	Mpi2RaidVolPage0_t vol_pg0;
1577 	Mpi2ConfigReply_t mpi_reply;
1578 	u32 volume_status_flags;
1579 	u8 percent_complete;
1580 	u16 handle;
1581 
1582 	percent_complete = 0;
1583 	handle = 0;
1584 	if (ioc->is_warpdrive)
1585 		goto out;
1586 
1587 	spin_lock_irqsave(&ioc->raid_device_lock, flags);
1588 	raid_device = _scsih_raid_device_find_by_id(ioc, sdev->id,
1589 	    sdev->channel);
1590 	if (raid_device) {
1591 		handle = raid_device->handle;
1592 		percent_complete = raid_device->percent_complete;
1593 	}
1594 	spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1595 
1596 	if (!handle)
1597 		goto out;
1598 
1599 	if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply, &vol_pg0,
1600 	     MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
1601 	     sizeof(Mpi2RaidVolPage0_t))) {
1602 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1603 		    ioc->name, __FILE__, __LINE__, __func__);
1604 		percent_complete = 0;
1605 		goto out;
1606 	}
1607 
1608 	volume_status_flags = le32_to_cpu(vol_pg0.VolumeStatusFlags);
1609 	if (!(volume_status_flags &
1610 	    MPI2_RAIDVOL0_STATUS_FLAG_RESYNC_IN_PROGRESS))
1611 		percent_complete = 0;
1612 
1613  out:
1614 
1615 	switch (ioc->hba_mpi_version_belonged) {
1616 	case MPI2_VERSION:
1617 		raid_set_resync(mpt2sas_raid_template, dev, percent_complete);
1618 		break;
1619 	case MPI25_VERSION:
1620 	case MPI26_VERSION:
1621 		raid_set_resync(mpt3sas_raid_template, dev, percent_complete);
1622 		break;
1623 	}
1624 }
1625 
1626 /**
1627  * scsih_get_state - get raid volume level
1628  * @dev the device struct object
1629  */
1630 static void
1631 scsih_get_state(struct device *dev)
1632 {
1633 	struct scsi_device *sdev = to_scsi_device(dev);
1634 	struct MPT3SAS_ADAPTER *ioc = shost_priv(sdev->host);
1635 	static struct _raid_device *raid_device;
1636 	unsigned long flags;
1637 	Mpi2RaidVolPage0_t vol_pg0;
1638 	Mpi2ConfigReply_t mpi_reply;
1639 	u32 volstate;
1640 	enum raid_state state = RAID_STATE_UNKNOWN;
1641 	u16 handle = 0;
1642 
1643 	spin_lock_irqsave(&ioc->raid_device_lock, flags);
1644 	raid_device = _scsih_raid_device_find_by_id(ioc, sdev->id,
1645 	    sdev->channel);
1646 	if (raid_device)
1647 		handle = raid_device->handle;
1648 	spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1649 
1650 	if (!raid_device)
1651 		goto out;
1652 
1653 	if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply, &vol_pg0,
1654 	     MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
1655 	     sizeof(Mpi2RaidVolPage0_t))) {
1656 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1657 		    ioc->name, __FILE__, __LINE__, __func__);
1658 		goto out;
1659 	}
1660 
1661 	volstate = le32_to_cpu(vol_pg0.VolumeStatusFlags);
1662 	if (volstate & MPI2_RAIDVOL0_STATUS_FLAG_RESYNC_IN_PROGRESS) {
1663 		state = RAID_STATE_RESYNCING;
1664 		goto out;
1665 	}
1666 
1667 	switch (vol_pg0.VolumeState) {
1668 	case MPI2_RAID_VOL_STATE_OPTIMAL:
1669 	case MPI2_RAID_VOL_STATE_ONLINE:
1670 		state = RAID_STATE_ACTIVE;
1671 		break;
1672 	case  MPI2_RAID_VOL_STATE_DEGRADED:
1673 		state = RAID_STATE_DEGRADED;
1674 		break;
1675 	case MPI2_RAID_VOL_STATE_FAILED:
1676 	case MPI2_RAID_VOL_STATE_MISSING:
1677 		state = RAID_STATE_OFFLINE;
1678 		break;
1679 	}
1680  out:
1681 	switch (ioc->hba_mpi_version_belonged) {
1682 	case MPI2_VERSION:
1683 		raid_set_state(mpt2sas_raid_template, dev, state);
1684 		break;
1685 	case MPI25_VERSION:
1686 	case MPI26_VERSION:
1687 		raid_set_state(mpt3sas_raid_template, dev, state);
1688 		break;
1689 	}
1690 }
1691 
1692 /**
1693  * _scsih_set_level - set raid level
1694  * @sdev: scsi device struct
1695  * @volume_type: volume type
1696  */
1697 static void
1698 _scsih_set_level(struct MPT3SAS_ADAPTER *ioc,
1699 	struct scsi_device *sdev, u8 volume_type)
1700 {
1701 	enum raid_level level = RAID_LEVEL_UNKNOWN;
1702 
1703 	switch (volume_type) {
1704 	case MPI2_RAID_VOL_TYPE_RAID0:
1705 		level = RAID_LEVEL_0;
1706 		break;
1707 	case MPI2_RAID_VOL_TYPE_RAID10:
1708 		level = RAID_LEVEL_10;
1709 		break;
1710 	case MPI2_RAID_VOL_TYPE_RAID1E:
1711 		level = RAID_LEVEL_1E;
1712 		break;
1713 	case MPI2_RAID_VOL_TYPE_RAID1:
1714 		level = RAID_LEVEL_1;
1715 		break;
1716 	}
1717 
1718 	switch (ioc->hba_mpi_version_belonged) {
1719 	case MPI2_VERSION:
1720 		raid_set_level(mpt2sas_raid_template,
1721 			&sdev->sdev_gendev, level);
1722 		break;
1723 	case MPI25_VERSION:
1724 	case MPI26_VERSION:
1725 		raid_set_level(mpt3sas_raid_template,
1726 			&sdev->sdev_gendev, level);
1727 		break;
1728 	}
1729 }
1730 
1731 
1732 /**
1733  * _scsih_get_volume_capabilities - volume capabilities
1734  * @ioc: per adapter object
1735  * @sas_device: the raid_device object
1736  *
1737  * Returns 0 for success, else 1
1738  */
1739 static int
1740 _scsih_get_volume_capabilities(struct MPT3SAS_ADAPTER *ioc,
1741 	struct _raid_device *raid_device)
1742 {
1743 	Mpi2RaidVolPage0_t *vol_pg0;
1744 	Mpi2RaidPhysDiskPage0_t pd_pg0;
1745 	Mpi2SasDevicePage0_t sas_device_pg0;
1746 	Mpi2ConfigReply_t mpi_reply;
1747 	u16 sz;
1748 	u8 num_pds;
1749 
1750 	if ((mpt3sas_config_get_number_pds(ioc, raid_device->handle,
1751 	    &num_pds)) || !num_pds) {
1752 		dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1753 		    "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1754 		    __func__));
1755 		return 1;
1756 	}
1757 
1758 	raid_device->num_pds = num_pds;
1759 	sz = offsetof(Mpi2RaidVolPage0_t, PhysDisk) + (num_pds *
1760 	    sizeof(Mpi2RaidVol0PhysDisk_t));
1761 	vol_pg0 = kzalloc(sz, GFP_KERNEL);
1762 	if (!vol_pg0) {
1763 		dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1764 		    "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1765 		    __func__));
1766 		return 1;
1767 	}
1768 
1769 	if ((mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply, vol_pg0,
1770 	     MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, raid_device->handle, sz))) {
1771 		dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1772 		    "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1773 		    __func__));
1774 		kfree(vol_pg0);
1775 		return 1;
1776 	}
1777 
1778 	raid_device->volume_type = vol_pg0->VolumeType;
1779 
1780 	/* figure out what the underlying devices are by
1781 	 * obtaining the device_info bits for the 1st device
1782 	 */
1783 	if (!(mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
1784 	    &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_PHYSDISKNUM,
1785 	    vol_pg0->PhysDisk[0].PhysDiskNum))) {
1786 		if (!(mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
1787 		    &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
1788 		    le16_to_cpu(pd_pg0.DevHandle)))) {
1789 			raid_device->device_info =
1790 			    le32_to_cpu(sas_device_pg0.DeviceInfo);
1791 		}
1792 	}
1793 
1794 	kfree(vol_pg0);
1795 	return 0;
1796 }
1797 
1798 /**
1799  * _scsih_enable_tlr - setting TLR flags
1800  * @ioc: per adapter object
1801  * @sdev: scsi device struct
1802  *
1803  * Enabling Transaction Layer Retries for tape devices when
1804  * vpd page 0x90 is present
1805  *
1806  */
1807 static void
1808 _scsih_enable_tlr(struct MPT3SAS_ADAPTER *ioc, struct scsi_device *sdev)
1809 {
1810 
1811 	/* only for TAPE */
1812 	if (sdev->type != TYPE_TAPE)
1813 		return;
1814 
1815 	if (!(ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR))
1816 		return;
1817 
1818 	sas_enable_tlr(sdev);
1819 	sdev_printk(KERN_INFO, sdev, "TLR %s\n",
1820 	    sas_is_tlr_enabled(sdev) ? "Enabled" : "Disabled");
1821 	return;
1822 
1823 }
1824 
1825 /**
1826  * scsih_slave_configure - device configure routine.
1827  * @sdev: scsi device struct
1828  *
1829  * Returns 0 if ok. Any other return is assumed to be an error and
1830  * the device is ignored.
1831  */
1832 static int
1833 scsih_slave_configure(struct scsi_device *sdev)
1834 {
1835 	struct Scsi_Host *shost = sdev->host;
1836 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1837 	struct MPT3SAS_DEVICE *sas_device_priv_data;
1838 	struct MPT3SAS_TARGET *sas_target_priv_data;
1839 	struct _sas_device *sas_device;
1840 	struct _raid_device *raid_device;
1841 	unsigned long flags;
1842 	int qdepth;
1843 	u8 ssp_target = 0;
1844 	char *ds = "";
1845 	char *r_level = "";
1846 	u16 handle, volume_handle = 0;
1847 	u64 volume_wwid = 0;
1848 
1849 	qdepth = 1;
1850 	sas_device_priv_data = sdev->hostdata;
1851 	sas_device_priv_data->configured_lun = 1;
1852 	sas_device_priv_data->flags &= ~MPT_DEVICE_FLAGS_INIT;
1853 	sas_target_priv_data = sas_device_priv_data->sas_target;
1854 	handle = sas_target_priv_data->handle;
1855 
1856 	/* raid volume handling */
1857 	if (sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME) {
1858 
1859 		spin_lock_irqsave(&ioc->raid_device_lock, flags);
1860 		raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
1861 		spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1862 		if (!raid_device) {
1863 			dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1864 			    "failure at %s:%d/%s()!\n", ioc->name, __FILE__,
1865 			    __LINE__, __func__));
1866 			return 1;
1867 		}
1868 
1869 		if (_scsih_get_volume_capabilities(ioc, raid_device)) {
1870 			dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1871 			    "failure at %s:%d/%s()!\n", ioc->name, __FILE__,
1872 			    __LINE__, __func__));
1873 			return 1;
1874 		}
1875 
1876 		/*
1877 		 * WARPDRIVE: Initialize the required data for Direct IO
1878 		 */
1879 		mpt3sas_init_warpdrive_properties(ioc, raid_device);
1880 
1881 		/* RAID Queue Depth Support
1882 		 * IS volume = underlying qdepth of drive type, either
1883 		 *    MPT3SAS_SAS_QUEUE_DEPTH or MPT3SAS_SATA_QUEUE_DEPTH
1884 		 * IM/IME/R10 = 128 (MPT3SAS_RAID_QUEUE_DEPTH)
1885 		 */
1886 		if (raid_device->device_info &
1887 		    MPI2_SAS_DEVICE_INFO_SSP_TARGET) {
1888 			qdepth = MPT3SAS_SAS_QUEUE_DEPTH;
1889 			ds = "SSP";
1890 		} else {
1891 			qdepth = MPT3SAS_SATA_QUEUE_DEPTH;
1892 			 if (raid_device->device_info &
1893 			    MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
1894 				ds = "SATA";
1895 			else
1896 				ds = "STP";
1897 		}
1898 
1899 		switch (raid_device->volume_type) {
1900 		case MPI2_RAID_VOL_TYPE_RAID0:
1901 			r_level = "RAID0";
1902 			break;
1903 		case MPI2_RAID_VOL_TYPE_RAID1E:
1904 			qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1905 			if (ioc->manu_pg10.OEMIdentifier &&
1906 			    (le32_to_cpu(ioc->manu_pg10.GenericFlags0) &
1907 			    MFG10_GF0_R10_DISPLAY) &&
1908 			    !(raid_device->num_pds % 2))
1909 				r_level = "RAID10";
1910 			else
1911 				r_level = "RAID1E";
1912 			break;
1913 		case MPI2_RAID_VOL_TYPE_RAID1:
1914 			qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1915 			r_level = "RAID1";
1916 			break;
1917 		case MPI2_RAID_VOL_TYPE_RAID10:
1918 			qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1919 			r_level = "RAID10";
1920 			break;
1921 		case MPI2_RAID_VOL_TYPE_UNKNOWN:
1922 		default:
1923 			qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
1924 			r_level = "RAIDX";
1925 			break;
1926 		}
1927 
1928 		if (!ioc->hide_ir_msg)
1929 			sdev_printk(KERN_INFO, sdev,
1930 			   "%s: handle(0x%04x), wwid(0x%016llx),"
1931 			    " pd_count(%d), type(%s)\n",
1932 			    r_level, raid_device->handle,
1933 			    (unsigned long long)raid_device->wwid,
1934 			    raid_device->num_pds, ds);
1935 
1936 		if (shost->max_sectors > MPT3SAS_RAID_MAX_SECTORS) {
1937 			blk_queue_max_hw_sectors(sdev->request_queue,
1938 						MPT3SAS_RAID_MAX_SECTORS);
1939 			sdev_printk(KERN_INFO, sdev,
1940 					"Set queue's max_sector to: %u\n",
1941 						MPT3SAS_RAID_MAX_SECTORS);
1942 		}
1943 
1944 		scsih_change_queue_depth(sdev, qdepth);
1945 
1946 		/* raid transport support */
1947 		if (!ioc->is_warpdrive)
1948 			_scsih_set_level(ioc, sdev, raid_device->volume_type);
1949 		return 0;
1950 	}
1951 
1952 	/* non-raid handling */
1953 	if (sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) {
1954 		if (mpt3sas_config_get_volume_handle(ioc, handle,
1955 		    &volume_handle)) {
1956 			dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1957 			    "failure at %s:%d/%s()!\n", ioc->name,
1958 			    __FILE__, __LINE__, __func__));
1959 			return 1;
1960 		}
1961 		if (volume_handle && mpt3sas_config_get_volume_wwid(ioc,
1962 		    volume_handle, &volume_wwid)) {
1963 			dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1964 			    "failure at %s:%d/%s()!\n", ioc->name,
1965 			    __FILE__, __LINE__, __func__));
1966 			return 1;
1967 		}
1968 	}
1969 
1970 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
1971 	sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1972 	   sas_device_priv_data->sas_target->sas_address);
1973 	if (!sas_device) {
1974 		spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1975 		dfailprintk(ioc, pr_warn(MPT3SAS_FMT
1976 		    "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
1977 		    __func__));
1978 		return 1;
1979 	}
1980 
1981 	sas_device->volume_handle = volume_handle;
1982 	sas_device->volume_wwid = volume_wwid;
1983 	if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET) {
1984 		qdepth = MPT3SAS_SAS_QUEUE_DEPTH;
1985 		ssp_target = 1;
1986 		if (sas_device->device_info &
1987 				MPI2_SAS_DEVICE_INFO_SEP) {
1988 			sdev_printk(KERN_WARNING, sdev,
1989 			"set ignore_delay_remove for handle(0x%04x)\n",
1990 			sas_device_priv_data->sas_target->handle);
1991 			sas_device_priv_data->ignore_delay_remove = 1;
1992 			ds = "SES";
1993 		} else
1994 			ds = "SSP";
1995 	} else {
1996 		qdepth = MPT3SAS_SATA_QUEUE_DEPTH;
1997 		if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET)
1998 			ds = "STP";
1999 		else if (sas_device->device_info &
2000 		    MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
2001 			ds = "SATA";
2002 	}
2003 
2004 	sdev_printk(KERN_INFO, sdev, "%s: handle(0x%04x), " \
2005 	    "sas_addr(0x%016llx), phy(%d), device_name(0x%016llx)\n",
2006 	    ds, handle, (unsigned long long)sas_device->sas_address,
2007 	    sas_device->phy, (unsigned long long)sas_device->device_name);
2008 	if (sas_device->enclosure_handle != 0)
2009 		sdev_printk(KERN_INFO, sdev,
2010 		     "%s: enclosure_logical_id(0x%016llx), slot(%d)\n",
2011 		     ds, (unsigned long long)
2012 		     sas_device->enclosure_logical_id, sas_device->slot);
2013 	if (sas_device->connector_name[0] != '\0')
2014 		sdev_printk(KERN_INFO, sdev,
2015 		     "%s: enclosure level(0x%04x), connector name( %s)\n",
2016 		     ds, sas_device->enclosure_level,
2017 		     sas_device->connector_name);
2018 
2019 	sas_device_put(sas_device);
2020 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
2021 
2022 	if (!ssp_target)
2023 		_scsih_display_sata_capabilities(ioc, handle, sdev);
2024 
2025 
2026 	scsih_change_queue_depth(sdev, qdepth);
2027 
2028 	if (ssp_target) {
2029 		sas_read_port_mode_page(sdev);
2030 		_scsih_enable_tlr(ioc, sdev);
2031 	}
2032 
2033 	return 0;
2034 }
2035 
2036 /**
2037  * scsih_bios_param - fetch head, sector, cylinder info for a disk
2038  * @sdev: scsi device struct
2039  * @bdev: pointer to block device context
2040  * @capacity: device size (in 512 byte sectors)
2041  * @params: three element array to place output:
2042  *              params[0] number of heads (max 255)
2043  *              params[1] number of sectors (max 63)
2044  *              params[2] number of cylinders
2045  *
2046  * Return nothing.
2047  */
2048 static int
2049 scsih_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2050 	sector_t capacity, int params[])
2051 {
2052 	int		heads;
2053 	int		sectors;
2054 	sector_t	cylinders;
2055 	ulong		dummy;
2056 
2057 	heads = 64;
2058 	sectors = 32;
2059 
2060 	dummy = heads * sectors;
2061 	cylinders = capacity;
2062 	sector_div(cylinders, dummy);
2063 
2064 	/*
2065 	 * Handle extended translation size for logical drives
2066 	 * > 1Gb
2067 	 */
2068 	if ((ulong)capacity >= 0x200000) {
2069 		heads = 255;
2070 		sectors = 63;
2071 		dummy = heads * sectors;
2072 		cylinders = capacity;
2073 		sector_div(cylinders, dummy);
2074 	}
2075 
2076 	/* return result */
2077 	params[0] = heads;
2078 	params[1] = sectors;
2079 	params[2] = cylinders;
2080 
2081 	return 0;
2082 }
2083 
2084 /**
2085  * _scsih_response_code - translation of device response code
2086  * @ioc: per adapter object
2087  * @response_code: response code returned by the device
2088  *
2089  * Return nothing.
2090  */
2091 static void
2092 _scsih_response_code(struct MPT3SAS_ADAPTER *ioc, u8 response_code)
2093 {
2094 	char *desc;
2095 
2096 	switch (response_code) {
2097 	case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
2098 		desc = "task management request completed";
2099 		break;
2100 	case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
2101 		desc = "invalid frame";
2102 		break;
2103 	case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
2104 		desc = "task management request not supported";
2105 		break;
2106 	case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
2107 		desc = "task management request failed";
2108 		break;
2109 	case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
2110 		desc = "task management request succeeded";
2111 		break;
2112 	case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
2113 		desc = "invalid lun";
2114 		break;
2115 	case 0xA:
2116 		desc = "overlapped tag attempted";
2117 		break;
2118 	case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
2119 		desc = "task queued, however not sent to target";
2120 		break;
2121 	default:
2122 		desc = "unknown";
2123 		break;
2124 	}
2125 	pr_warn(MPT3SAS_FMT "response_code(0x%01x): %s\n",
2126 		ioc->name, response_code, desc);
2127 }
2128 
2129 /**
2130  * _scsih_tm_done - tm completion routine
2131  * @ioc: per adapter object
2132  * @smid: system request message index
2133  * @msix_index: MSIX table index supplied by the OS
2134  * @reply: reply message frame(lower 32bit addr)
2135  * Context: none.
2136  *
2137  * The callback handler when using scsih_issue_tm.
2138  *
2139  * Return 1 meaning mf should be freed from _base_interrupt
2140  *        0 means the mf is freed from this function.
2141  */
2142 static u8
2143 _scsih_tm_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
2144 {
2145 	MPI2DefaultReply_t *mpi_reply;
2146 
2147 	if (ioc->tm_cmds.status == MPT3_CMD_NOT_USED)
2148 		return 1;
2149 	if (ioc->tm_cmds.smid != smid)
2150 		return 1;
2151 	ioc->tm_cmds.status |= MPT3_CMD_COMPLETE;
2152 	mpi_reply =  mpt3sas_base_get_reply_virt_addr(ioc, reply);
2153 	if (mpi_reply) {
2154 		memcpy(ioc->tm_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
2155 		ioc->tm_cmds.status |= MPT3_CMD_REPLY_VALID;
2156 	}
2157 	ioc->tm_cmds.status &= ~MPT3_CMD_PENDING;
2158 	complete(&ioc->tm_cmds.done);
2159 	return 1;
2160 }
2161 
2162 /**
2163  * mpt3sas_scsih_set_tm_flag - set per target tm_busy
2164  * @ioc: per adapter object
2165  * @handle: device handle
2166  *
2167  * During taskmangement request, we need to freeze the device queue.
2168  */
2169 void
2170 mpt3sas_scsih_set_tm_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle)
2171 {
2172 	struct MPT3SAS_DEVICE *sas_device_priv_data;
2173 	struct scsi_device *sdev;
2174 	u8 skip = 0;
2175 
2176 	shost_for_each_device(sdev, ioc->shost) {
2177 		if (skip)
2178 			continue;
2179 		sas_device_priv_data = sdev->hostdata;
2180 		if (!sas_device_priv_data)
2181 			continue;
2182 		if (sas_device_priv_data->sas_target->handle == handle) {
2183 			sas_device_priv_data->sas_target->tm_busy = 1;
2184 			skip = 1;
2185 			ioc->ignore_loginfos = 1;
2186 		}
2187 	}
2188 }
2189 
2190 /**
2191  * mpt3sas_scsih_clear_tm_flag - clear per target tm_busy
2192  * @ioc: per adapter object
2193  * @handle: device handle
2194  *
2195  * During taskmangement request, we need to freeze the device queue.
2196  */
2197 void
2198 mpt3sas_scsih_clear_tm_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle)
2199 {
2200 	struct MPT3SAS_DEVICE *sas_device_priv_data;
2201 	struct scsi_device *sdev;
2202 	u8 skip = 0;
2203 
2204 	shost_for_each_device(sdev, ioc->shost) {
2205 		if (skip)
2206 			continue;
2207 		sas_device_priv_data = sdev->hostdata;
2208 		if (!sas_device_priv_data)
2209 			continue;
2210 		if (sas_device_priv_data->sas_target->handle == handle) {
2211 			sas_device_priv_data->sas_target->tm_busy = 0;
2212 			skip = 1;
2213 			ioc->ignore_loginfos = 0;
2214 		}
2215 	}
2216 }
2217 
2218 /**
2219  * mpt3sas_scsih_issue_tm - main routine for sending tm requests
2220  * @ioc: per adapter struct
2221  * @device_handle: device handle
2222  * @channel: the channel assigned by the OS
2223  * @id: the id assigned by the OS
2224  * @lun: lun number
2225  * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in mpi2_init.h)
2226  * @smid_task: smid assigned to the task
2227  * @timeout: timeout in seconds
2228  * Context: user
2229  *
2230  * A generic API for sending task management requests to firmware.
2231  *
2232  * The callback index is set inside `ioc->tm_cb_idx`.
2233  *
2234  * Return SUCCESS or FAILED.
2235  */
2236 int
2237 mpt3sas_scsih_issue_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle, uint channel,
2238 	uint id, uint lun, u8 type, u16 smid_task, ulong timeout)
2239 {
2240 	Mpi2SCSITaskManagementRequest_t *mpi_request;
2241 	Mpi2SCSITaskManagementReply_t *mpi_reply;
2242 	u16 smid = 0;
2243 	u32 ioc_state;
2244 	struct scsiio_tracker *scsi_lookup = NULL;
2245 	int rc;
2246 	u16 msix_task = 0;
2247 
2248 	lockdep_assert_held(&ioc->tm_cmds.mutex);
2249 
2250 	if (ioc->tm_cmds.status != MPT3_CMD_NOT_USED) {
2251 		pr_info(MPT3SAS_FMT "%s: tm_cmd busy!!!\n",
2252 		    __func__, ioc->name);
2253 		return FAILED;
2254 	}
2255 
2256 	if (ioc->shost_recovery || ioc->remove_host ||
2257 	    ioc->pci_error_recovery) {
2258 		pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
2259 		    __func__, ioc->name);
2260 		return FAILED;
2261 	}
2262 
2263 	ioc_state = mpt3sas_base_get_iocstate(ioc, 0);
2264 	if (ioc_state & MPI2_DOORBELL_USED) {
2265 		dhsprintk(ioc, pr_info(MPT3SAS_FMT
2266 			"unexpected doorbell active!\n", ioc->name));
2267 		rc = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2268 		return (!rc) ? SUCCESS : FAILED;
2269 	}
2270 
2271 	if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
2272 		mpt3sas_base_fault_info(ioc, ioc_state &
2273 		    MPI2_DOORBELL_DATA_MASK);
2274 		rc = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2275 		return (!rc) ? SUCCESS : FAILED;
2276 	}
2277 
2278 	smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_cb_idx);
2279 	if (!smid) {
2280 		pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
2281 		    ioc->name, __func__);
2282 		return FAILED;
2283 	}
2284 
2285 	if (type == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK)
2286 		scsi_lookup = &ioc->scsi_lookup[smid_task - 1];
2287 
2288 	dtmprintk(ioc, pr_info(MPT3SAS_FMT
2289 		"sending tm: handle(0x%04x), task_type(0x%02x), smid(%d)\n",
2290 		ioc->name, handle, type, smid_task));
2291 	ioc->tm_cmds.status = MPT3_CMD_PENDING;
2292 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
2293 	ioc->tm_cmds.smid = smid;
2294 	memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
2295 	memset(ioc->tm_cmds.reply, 0, sizeof(Mpi2SCSITaskManagementReply_t));
2296 	mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
2297 	mpi_request->DevHandle = cpu_to_le16(handle);
2298 	mpi_request->TaskType = type;
2299 	mpi_request->TaskMID = cpu_to_le16(smid_task);
2300 	int_to_scsilun(lun, (struct scsi_lun *)mpi_request->LUN);
2301 	mpt3sas_scsih_set_tm_flag(ioc, handle);
2302 	init_completion(&ioc->tm_cmds.done);
2303 	if ((type == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK) &&
2304 			(scsi_lookup->msix_io < ioc->reply_queue_count))
2305 		msix_task = scsi_lookup->msix_io;
2306 	else
2307 		msix_task = 0;
2308 	ioc->put_smid_hi_priority(ioc, smid, msix_task);
2309 	wait_for_completion_timeout(&ioc->tm_cmds.done, timeout*HZ);
2310 	if (!(ioc->tm_cmds.status & MPT3_CMD_COMPLETE)) {
2311 		pr_err(MPT3SAS_FMT "%s: timeout\n",
2312 		    ioc->name, __func__);
2313 		_debug_dump_mf(mpi_request,
2314 		    sizeof(Mpi2SCSITaskManagementRequest_t)/4);
2315 		if (!(ioc->tm_cmds.status & MPT3_CMD_RESET)) {
2316 			rc = mpt3sas_base_hard_reset_handler(ioc,
2317 					FORCE_BIG_HAMMER);
2318 			rc = (!rc) ? SUCCESS : FAILED;
2319 			goto out;
2320 		}
2321 	}
2322 
2323 	/* sync IRQs in case those were busy during flush. */
2324 	mpt3sas_base_sync_reply_irqs(ioc);
2325 
2326 	if (ioc->tm_cmds.status & MPT3_CMD_REPLY_VALID) {
2327 		mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT);
2328 		mpi_reply = ioc->tm_cmds.reply;
2329 		dtmprintk(ioc, pr_info(MPT3SAS_FMT "complete tm: " \
2330 		    "ioc_status(0x%04x), loginfo(0x%08x), term_count(0x%08x)\n",
2331 		    ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
2332 		    le32_to_cpu(mpi_reply->IOCLogInfo),
2333 		    le32_to_cpu(mpi_reply->TerminationCount)));
2334 		if (ioc->logging_level & MPT_DEBUG_TM) {
2335 			_scsih_response_code(ioc, mpi_reply->ResponseCode);
2336 			if (mpi_reply->IOCStatus)
2337 				_debug_dump_mf(mpi_request,
2338 				    sizeof(Mpi2SCSITaskManagementRequest_t)/4);
2339 		}
2340 	}
2341 
2342 	switch (type) {
2343 	case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
2344 		rc = SUCCESS;
2345 		if (scsi_lookup->scmd == NULL)
2346 			break;
2347 		rc = FAILED;
2348 		break;
2349 
2350 	case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
2351 		if (_scsih_scsi_lookup_find_by_target(ioc, id, channel))
2352 			rc = FAILED;
2353 		else
2354 			rc = SUCCESS;
2355 		break;
2356 	case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
2357 	case MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET:
2358 		if (_scsih_scsi_lookup_find_by_lun(ioc, id, lun, channel))
2359 			rc = FAILED;
2360 		else
2361 			rc = SUCCESS;
2362 		break;
2363 	case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
2364 		rc = SUCCESS;
2365 		break;
2366 	default:
2367 		rc = FAILED;
2368 		break;
2369 	}
2370 
2371 out:
2372 	mpt3sas_scsih_clear_tm_flag(ioc, handle);
2373 	ioc->tm_cmds.status = MPT3_CMD_NOT_USED;
2374 	return rc;
2375 }
2376 
2377 int mpt3sas_scsih_issue_locked_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle,
2378 	uint channel, uint id, uint lun, u8 type, u16 smid_task, ulong timeout)
2379 {
2380 	int ret;
2381 
2382 	mutex_lock(&ioc->tm_cmds.mutex);
2383 	ret = mpt3sas_scsih_issue_tm(ioc, handle, channel, id, lun, type,
2384 			smid_task, timeout);
2385 	mutex_unlock(&ioc->tm_cmds.mutex);
2386 
2387 	return ret;
2388 }
2389 
2390 /**
2391  * _scsih_tm_display_info - displays info about the device
2392  * @ioc: per adapter struct
2393  * @scmd: pointer to scsi command object
2394  *
2395  * Called by task management callback handlers.
2396  */
2397 static void
2398 _scsih_tm_display_info(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd)
2399 {
2400 	struct scsi_target *starget = scmd->device->sdev_target;
2401 	struct MPT3SAS_TARGET *priv_target = starget->hostdata;
2402 	struct _sas_device *sas_device = NULL;
2403 	unsigned long flags;
2404 	char *device_str = NULL;
2405 
2406 	if (!priv_target)
2407 		return;
2408 	if (ioc->hide_ir_msg)
2409 		device_str = "WarpDrive";
2410 	else
2411 		device_str = "volume";
2412 
2413 	scsi_print_command(scmd);
2414 	if (priv_target->flags & MPT_TARGET_FLAGS_VOLUME) {
2415 		starget_printk(KERN_INFO, starget,
2416 			"%s handle(0x%04x), %s wwid(0x%016llx)\n",
2417 			device_str, priv_target->handle,
2418 		    device_str, (unsigned long long)priv_target->sas_address);
2419 	} else {
2420 		spin_lock_irqsave(&ioc->sas_device_lock, flags);
2421 		sas_device = __mpt3sas_get_sdev_from_target(ioc, priv_target);
2422 		if (sas_device) {
2423 			if (priv_target->flags &
2424 			    MPT_TARGET_FLAGS_RAID_COMPONENT) {
2425 				starget_printk(KERN_INFO, starget,
2426 				    "volume handle(0x%04x), "
2427 				    "volume wwid(0x%016llx)\n",
2428 				    sas_device->volume_handle,
2429 				   (unsigned long long)sas_device->volume_wwid);
2430 			}
2431 			starget_printk(KERN_INFO, starget,
2432 			    "handle(0x%04x), sas_address(0x%016llx), phy(%d)\n",
2433 			    sas_device->handle,
2434 			    (unsigned long long)sas_device->sas_address,
2435 			    sas_device->phy);
2436 			if (sas_device->enclosure_handle != 0)
2437 				starget_printk(KERN_INFO, starget,
2438 				 "enclosure_logical_id(0x%016llx), slot(%d)\n",
2439 				 (unsigned long long)
2440 				 sas_device->enclosure_logical_id,
2441 				 sas_device->slot);
2442 			if (sas_device->connector_name[0] != '\0')
2443 				starget_printk(KERN_INFO, starget,
2444 				"enclosure level(0x%04x),connector name(%s)\n",
2445 				 sas_device->enclosure_level,
2446 				 sas_device->connector_name);
2447 
2448 			sas_device_put(sas_device);
2449 		}
2450 		spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
2451 	}
2452 }
2453 
2454 /**
2455  * scsih_abort - eh threads main abort routine
2456  * @scmd: pointer to scsi command object
2457  *
2458  * Returns SUCCESS if command aborted else FAILED
2459  */
2460 static int
2461 scsih_abort(struct scsi_cmnd *scmd)
2462 {
2463 	struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2464 	struct MPT3SAS_DEVICE *sas_device_priv_data;
2465 	u16 smid;
2466 	u16 handle;
2467 	int r;
2468 
2469 	sdev_printk(KERN_INFO, scmd->device,
2470 		"attempting task abort! scmd(%p)\n", scmd);
2471 	_scsih_tm_display_info(ioc, scmd);
2472 
2473 	sas_device_priv_data = scmd->device->hostdata;
2474 	if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
2475 		sdev_printk(KERN_INFO, scmd->device,
2476 			"device been deleted! scmd(%p)\n", scmd);
2477 		scmd->result = DID_NO_CONNECT << 16;
2478 		scmd->scsi_done(scmd);
2479 		r = SUCCESS;
2480 		goto out;
2481 	}
2482 
2483 	/* search for the command */
2484 	smid = _scsih_scsi_lookup_find_by_scmd(ioc, scmd);
2485 	if (!smid) {
2486 		scmd->result = DID_RESET << 16;
2487 		r = SUCCESS;
2488 		goto out;
2489 	}
2490 
2491 	/* for hidden raid components and volumes this is not supported */
2492 	if (sas_device_priv_data->sas_target->flags &
2493 	    MPT_TARGET_FLAGS_RAID_COMPONENT ||
2494 	    sas_device_priv_data->sas_target->flags & MPT_TARGET_FLAGS_VOLUME) {
2495 		scmd->result = DID_RESET << 16;
2496 		r = FAILED;
2497 		goto out;
2498 	}
2499 
2500 	mpt3sas_halt_firmware(ioc);
2501 
2502 	handle = sas_device_priv_data->sas_target->handle;
2503 	r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
2504 	    scmd->device->id, scmd->device->lun,
2505 	    MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, smid, 30);
2506 
2507  out:
2508 	sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n",
2509 	    ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2510 	return r;
2511 }
2512 
2513 /**
2514  * scsih_dev_reset - eh threads main device reset routine
2515  * @scmd: pointer to scsi command object
2516  *
2517  * Returns SUCCESS if command aborted else FAILED
2518  */
2519 static int
2520 scsih_dev_reset(struct scsi_cmnd *scmd)
2521 {
2522 	struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2523 	struct MPT3SAS_DEVICE *sas_device_priv_data;
2524 	struct _sas_device *sas_device = NULL;
2525 	u16	handle;
2526 	int r;
2527 
2528 	struct scsi_target *starget = scmd->device->sdev_target;
2529 	struct MPT3SAS_TARGET *target_priv_data = starget->hostdata;
2530 
2531 	sdev_printk(KERN_INFO, scmd->device,
2532 		"attempting device reset! scmd(%p)\n", scmd);
2533 	_scsih_tm_display_info(ioc, scmd);
2534 
2535 	sas_device_priv_data = scmd->device->hostdata;
2536 	if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
2537 		sdev_printk(KERN_INFO, scmd->device,
2538 			"device been deleted! scmd(%p)\n", scmd);
2539 		scmd->result = DID_NO_CONNECT << 16;
2540 		scmd->scsi_done(scmd);
2541 		r = SUCCESS;
2542 		goto out;
2543 	}
2544 
2545 	/* for hidden raid components obtain the volume_handle */
2546 	handle = 0;
2547 	if (sas_device_priv_data->sas_target->flags &
2548 	    MPT_TARGET_FLAGS_RAID_COMPONENT) {
2549 		sas_device = mpt3sas_get_sdev_from_target(ioc,
2550 				target_priv_data);
2551 		if (sas_device)
2552 			handle = sas_device->volume_handle;
2553 	} else
2554 		handle = sas_device_priv_data->sas_target->handle;
2555 
2556 	if (!handle) {
2557 		scmd->result = DID_RESET << 16;
2558 		r = FAILED;
2559 		goto out;
2560 	}
2561 
2562 	r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
2563 	    scmd->device->id, scmd->device->lun,
2564 	    MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET, 0, 30);
2565 
2566  out:
2567 	sdev_printk(KERN_INFO, scmd->device, "device reset: %s scmd(%p)\n",
2568 	    ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2569 
2570 	if (sas_device)
2571 		sas_device_put(sas_device);
2572 
2573 	return r;
2574 }
2575 
2576 /**
2577  * scsih_target_reset - eh threads main target reset routine
2578  * @scmd: pointer to scsi command object
2579  *
2580  * Returns SUCCESS if command aborted else FAILED
2581  */
2582 static int
2583 scsih_target_reset(struct scsi_cmnd *scmd)
2584 {
2585 	struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2586 	struct MPT3SAS_DEVICE *sas_device_priv_data;
2587 	struct _sas_device *sas_device = NULL;
2588 	u16	handle;
2589 	int r;
2590 	struct scsi_target *starget = scmd->device->sdev_target;
2591 	struct MPT3SAS_TARGET *target_priv_data = starget->hostdata;
2592 
2593 	starget_printk(KERN_INFO, starget, "attempting target reset! scmd(%p)\n",
2594 		scmd);
2595 	_scsih_tm_display_info(ioc, scmd);
2596 
2597 	sas_device_priv_data = scmd->device->hostdata;
2598 	if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
2599 		starget_printk(KERN_INFO, starget, "target been deleted! scmd(%p)\n",
2600 			scmd);
2601 		scmd->result = DID_NO_CONNECT << 16;
2602 		scmd->scsi_done(scmd);
2603 		r = SUCCESS;
2604 		goto out;
2605 	}
2606 
2607 	/* for hidden raid components obtain the volume_handle */
2608 	handle = 0;
2609 	if (sas_device_priv_data->sas_target->flags &
2610 	    MPT_TARGET_FLAGS_RAID_COMPONENT) {
2611 		sas_device = mpt3sas_get_sdev_from_target(ioc,
2612 				target_priv_data);
2613 		if (sas_device)
2614 			handle = sas_device->volume_handle;
2615 	} else
2616 		handle = sas_device_priv_data->sas_target->handle;
2617 
2618 	if (!handle) {
2619 		scmd->result = DID_RESET << 16;
2620 		r = FAILED;
2621 		goto out;
2622 	}
2623 
2624 	r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
2625 	    scmd->device->id, 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0,
2626 	    30);
2627 
2628  out:
2629 	starget_printk(KERN_INFO, starget, "target reset: %s scmd(%p)\n",
2630 	    ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2631 
2632 	if (sas_device)
2633 		sas_device_put(sas_device);
2634 
2635 	return r;
2636 }
2637 
2638 
2639 /**
2640  * scsih_host_reset - eh threads main host reset routine
2641  * @scmd: pointer to scsi command object
2642  *
2643  * Returns SUCCESS if command aborted else FAILED
2644  */
2645 static int
2646 scsih_host_reset(struct scsi_cmnd *scmd)
2647 {
2648 	struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
2649 	int r, retval;
2650 
2651 	pr_info(MPT3SAS_FMT "attempting host reset! scmd(%p)\n",
2652 	    ioc->name, scmd);
2653 	scsi_print_command(scmd);
2654 
2655 	if (ioc->is_driver_loading) {
2656 		pr_info(MPT3SAS_FMT "Blocking the host reset\n",
2657 		    ioc->name);
2658 		r = FAILED;
2659 		goto out;
2660 	}
2661 
2662 	retval = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2663 	r = (retval < 0) ? FAILED : SUCCESS;
2664 out:
2665 	pr_info(MPT3SAS_FMT "host reset: %s scmd(%p)\n",
2666 	    ioc->name, ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2667 
2668 	return r;
2669 }
2670 
2671 /**
2672  * _scsih_fw_event_add - insert and queue up fw_event
2673  * @ioc: per adapter object
2674  * @fw_event: object describing the event
2675  * Context: This function will acquire ioc->fw_event_lock.
2676  *
2677  * This adds the firmware event object into link list, then queues it up to
2678  * be processed from user context.
2679  *
2680  * Return nothing.
2681  */
2682 static void
2683 _scsih_fw_event_add(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work *fw_event)
2684 {
2685 	unsigned long flags;
2686 
2687 	if (ioc->firmware_event_thread == NULL)
2688 		return;
2689 
2690 	spin_lock_irqsave(&ioc->fw_event_lock, flags);
2691 	fw_event_work_get(fw_event);
2692 	INIT_LIST_HEAD(&fw_event->list);
2693 	list_add_tail(&fw_event->list, &ioc->fw_event_list);
2694 	INIT_WORK(&fw_event->work, _firmware_event_work);
2695 	fw_event_work_get(fw_event);
2696 	queue_work(ioc->firmware_event_thread, &fw_event->work);
2697 	spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2698 }
2699 
2700 /**
2701  * _scsih_fw_event_del_from_list - delete fw_event from the list
2702  * @ioc: per adapter object
2703  * @fw_event: object describing the event
2704  * Context: This function will acquire ioc->fw_event_lock.
2705  *
2706  * If the fw_event is on the fw_event_list, remove it and do a put.
2707  *
2708  * Return nothing.
2709  */
2710 static void
2711 _scsih_fw_event_del_from_list(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work
2712 	*fw_event)
2713 {
2714 	unsigned long flags;
2715 
2716 	spin_lock_irqsave(&ioc->fw_event_lock, flags);
2717 	if (!list_empty(&fw_event->list)) {
2718 		list_del_init(&fw_event->list);
2719 		fw_event_work_put(fw_event);
2720 	}
2721 	spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2722 }
2723 
2724 
2725  /**
2726  * mpt3sas_send_trigger_data_event - send event for processing trigger data
2727  * @ioc: per adapter object
2728  * @event_data: trigger event data
2729  *
2730  * Return nothing.
2731  */
2732 void
2733 mpt3sas_send_trigger_data_event(struct MPT3SAS_ADAPTER *ioc,
2734 	struct SL_WH_TRIGGERS_EVENT_DATA_T *event_data)
2735 {
2736 	struct fw_event_work *fw_event;
2737 	u16 sz;
2738 
2739 	if (ioc->is_driver_loading)
2740 		return;
2741 	sz = sizeof(*event_data);
2742 	fw_event = alloc_fw_event_work(sz);
2743 	if (!fw_event)
2744 		return;
2745 	fw_event->event = MPT3SAS_PROCESS_TRIGGER_DIAG;
2746 	fw_event->ioc = ioc;
2747 	memcpy(fw_event->event_data, event_data, sizeof(*event_data));
2748 	_scsih_fw_event_add(ioc, fw_event);
2749 	fw_event_work_put(fw_event);
2750 }
2751 
2752 /**
2753  * _scsih_error_recovery_delete_devices - remove devices not responding
2754  * @ioc: per adapter object
2755  *
2756  * Return nothing.
2757  */
2758 static void
2759 _scsih_error_recovery_delete_devices(struct MPT3SAS_ADAPTER *ioc)
2760 {
2761 	struct fw_event_work *fw_event;
2762 
2763 	if (ioc->is_driver_loading)
2764 		return;
2765 	fw_event = alloc_fw_event_work(0);
2766 	if (!fw_event)
2767 		return;
2768 	fw_event->event = MPT3SAS_REMOVE_UNRESPONDING_DEVICES;
2769 	fw_event->ioc = ioc;
2770 	_scsih_fw_event_add(ioc, fw_event);
2771 	fw_event_work_put(fw_event);
2772 }
2773 
2774 /**
2775  * mpt3sas_port_enable_complete - port enable completed (fake event)
2776  * @ioc: per adapter object
2777  *
2778  * Return nothing.
2779  */
2780 void
2781 mpt3sas_port_enable_complete(struct MPT3SAS_ADAPTER *ioc)
2782 {
2783 	struct fw_event_work *fw_event;
2784 
2785 	fw_event = alloc_fw_event_work(0);
2786 	if (!fw_event)
2787 		return;
2788 	fw_event->event = MPT3SAS_PORT_ENABLE_COMPLETE;
2789 	fw_event->ioc = ioc;
2790 	_scsih_fw_event_add(ioc, fw_event);
2791 	fw_event_work_put(fw_event);
2792 }
2793 
2794 static struct fw_event_work *dequeue_next_fw_event(struct MPT3SAS_ADAPTER *ioc)
2795 {
2796 	unsigned long flags;
2797 	struct fw_event_work *fw_event = NULL;
2798 
2799 	spin_lock_irqsave(&ioc->fw_event_lock, flags);
2800 	if (!list_empty(&ioc->fw_event_list)) {
2801 		fw_event = list_first_entry(&ioc->fw_event_list,
2802 				struct fw_event_work, list);
2803 		list_del_init(&fw_event->list);
2804 	}
2805 	spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
2806 
2807 	return fw_event;
2808 }
2809 
2810 /**
2811  * _scsih_fw_event_cleanup_queue - cleanup event queue
2812  * @ioc: per adapter object
2813  *
2814  * Walk the firmware event queue, either killing timers, or waiting
2815  * for outstanding events to complete
2816  *
2817  * Return nothing.
2818  */
2819 static void
2820 _scsih_fw_event_cleanup_queue(struct MPT3SAS_ADAPTER *ioc)
2821 {
2822 	struct fw_event_work *fw_event;
2823 
2824 	if (list_empty(&ioc->fw_event_list) ||
2825 	     !ioc->firmware_event_thread || in_interrupt())
2826 		return;
2827 
2828 	while ((fw_event = dequeue_next_fw_event(ioc))) {
2829 		/*
2830 		 * Wait on the fw_event to complete. If this returns 1, then
2831 		 * the event was never executed, and we need a put for the
2832 		 * reference the work had on the fw_event.
2833 		 *
2834 		 * If it did execute, we wait for it to finish, and the put will
2835 		 * happen from _firmware_event_work()
2836 		 */
2837 		if (cancel_work_sync(&fw_event->work))
2838 			fw_event_work_put(fw_event);
2839 
2840 		fw_event_work_put(fw_event);
2841 	}
2842 }
2843 
2844 /**
2845  * _scsih_internal_device_block - block the sdev device
2846  * @sdev: per device object
2847  * @sas_device_priv_data : per device driver private data
2848  *
2849  * make sure device is blocked without error, if not
2850  * print an error
2851  */
2852 static void
2853 _scsih_internal_device_block(struct scsi_device *sdev,
2854 			struct MPT3SAS_DEVICE *sas_device_priv_data)
2855 {
2856 	int r = 0;
2857 
2858 	sdev_printk(KERN_INFO, sdev, "device_block, handle(0x%04x)\n",
2859 	    sas_device_priv_data->sas_target->handle);
2860 	sas_device_priv_data->block = 1;
2861 
2862 	r = scsi_internal_device_block_nowait(sdev);
2863 	if (r == -EINVAL)
2864 		sdev_printk(KERN_WARNING, sdev,
2865 		    "device_block failed with return(%d) for handle(0x%04x)\n",
2866 		    r, sas_device_priv_data->sas_target->handle);
2867 }
2868 
2869 /**
2870  * _scsih_internal_device_unblock - unblock the sdev device
2871  * @sdev: per device object
2872  * @sas_device_priv_data : per device driver private data
2873  * make sure device is unblocked without error, if not retry
2874  * by blocking and then unblocking
2875  */
2876 
2877 static void
2878 _scsih_internal_device_unblock(struct scsi_device *sdev,
2879 			struct MPT3SAS_DEVICE *sas_device_priv_data)
2880 {
2881 	int r = 0;
2882 
2883 	sdev_printk(KERN_WARNING, sdev, "device_unblock and setting to running, "
2884 	    "handle(0x%04x)\n", sas_device_priv_data->sas_target->handle);
2885 	sas_device_priv_data->block = 0;
2886 	r = scsi_internal_device_unblock_nowait(sdev, SDEV_RUNNING);
2887 	if (r == -EINVAL) {
2888 		/* The device has been set to SDEV_RUNNING by SD layer during
2889 		 * device addition but the request queue is still stopped by
2890 		 * our earlier block call. We need to perform a block again
2891 		 * to get the device to SDEV_BLOCK and then to SDEV_RUNNING */
2892 
2893 		sdev_printk(KERN_WARNING, sdev,
2894 		    "device_unblock failed with return(%d) for handle(0x%04x) "
2895 		    "performing a block followed by an unblock\n",
2896 		    r, sas_device_priv_data->sas_target->handle);
2897 		sas_device_priv_data->block = 1;
2898 		r = scsi_internal_device_block_nowait(sdev);
2899 		if (r)
2900 			sdev_printk(KERN_WARNING, sdev, "retried device_block "
2901 			    "failed with return(%d) for handle(0x%04x)\n",
2902 			    r, sas_device_priv_data->sas_target->handle);
2903 
2904 		sas_device_priv_data->block = 0;
2905 		r = scsi_internal_device_unblock_nowait(sdev, SDEV_RUNNING);
2906 		if (r)
2907 			sdev_printk(KERN_WARNING, sdev, "retried device_unblock"
2908 			    " failed with return(%d) for handle(0x%04x)\n",
2909 			    r, sas_device_priv_data->sas_target->handle);
2910 	}
2911 }
2912 
2913 /**
2914  * _scsih_ublock_io_all_device - unblock every device
2915  * @ioc: per adapter object
2916  *
2917  * change the device state from block to running
2918  */
2919 static void
2920 _scsih_ublock_io_all_device(struct MPT3SAS_ADAPTER *ioc)
2921 {
2922 	struct MPT3SAS_DEVICE *sas_device_priv_data;
2923 	struct scsi_device *sdev;
2924 
2925 	shost_for_each_device(sdev, ioc->shost) {
2926 		sas_device_priv_data = sdev->hostdata;
2927 		if (!sas_device_priv_data)
2928 			continue;
2929 		if (!sas_device_priv_data->block)
2930 			continue;
2931 
2932 		dewtprintk(ioc, sdev_printk(KERN_INFO, sdev,
2933 			"device_running, handle(0x%04x)\n",
2934 		    sas_device_priv_data->sas_target->handle));
2935 		_scsih_internal_device_unblock(sdev, sas_device_priv_data);
2936 	}
2937 }
2938 
2939 
2940 /**
2941  * _scsih_ublock_io_device - prepare device to be deleted
2942  * @ioc: per adapter object
2943  * @sas_addr: sas address
2944  *
2945  * unblock then put device in offline state
2946  */
2947 static void
2948 _scsih_ublock_io_device(struct MPT3SAS_ADAPTER *ioc, u64 sas_address)
2949 {
2950 	struct MPT3SAS_DEVICE *sas_device_priv_data;
2951 	struct scsi_device *sdev;
2952 
2953 	shost_for_each_device(sdev, ioc->shost) {
2954 		sas_device_priv_data = sdev->hostdata;
2955 		if (!sas_device_priv_data)
2956 			continue;
2957 		if (sas_device_priv_data->sas_target->sas_address
2958 		    != sas_address)
2959 			continue;
2960 		if (sas_device_priv_data->block)
2961 			_scsih_internal_device_unblock(sdev,
2962 				sas_device_priv_data);
2963 	}
2964 }
2965 
2966 /**
2967  * _scsih_block_io_all_device - set the device state to SDEV_BLOCK
2968  * @ioc: per adapter object
2969  * @handle: device handle
2970  *
2971  * During device pull we need to appropriately set the sdev state.
2972  */
2973 static void
2974 _scsih_block_io_all_device(struct MPT3SAS_ADAPTER *ioc)
2975 {
2976 	struct MPT3SAS_DEVICE *sas_device_priv_data;
2977 	struct scsi_device *sdev;
2978 
2979 	shost_for_each_device(sdev, ioc->shost) {
2980 		sas_device_priv_data = sdev->hostdata;
2981 		if (!sas_device_priv_data)
2982 			continue;
2983 		if (sas_device_priv_data->block)
2984 			continue;
2985 		if (sas_device_priv_data->ignore_delay_remove) {
2986 			sdev_printk(KERN_INFO, sdev,
2987 			"%s skip device_block for SES handle(0x%04x)\n",
2988 			__func__, sas_device_priv_data->sas_target->handle);
2989 			continue;
2990 		}
2991 		_scsih_internal_device_block(sdev, sas_device_priv_data);
2992 	}
2993 }
2994 
2995 /**
2996  * _scsih_block_io_device - set the device state to SDEV_BLOCK
2997  * @ioc: per adapter object
2998  * @handle: device handle
2999  *
3000  * During device pull we need to appropriately set the sdev state.
3001  */
3002 static void
3003 _scsih_block_io_device(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3004 {
3005 	struct MPT3SAS_DEVICE *sas_device_priv_data;
3006 	struct scsi_device *sdev;
3007 	struct _sas_device *sas_device;
3008 
3009 	sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
3010 	if (!sas_device)
3011 		return;
3012 
3013 	shost_for_each_device(sdev, ioc->shost) {
3014 		sas_device_priv_data = sdev->hostdata;
3015 		if (!sas_device_priv_data)
3016 			continue;
3017 		if (sas_device_priv_data->sas_target->handle != handle)
3018 			continue;
3019 		if (sas_device_priv_data->block)
3020 			continue;
3021 		if (sas_device->pend_sas_rphy_add)
3022 			continue;
3023 		if (sas_device_priv_data->ignore_delay_remove) {
3024 			sdev_printk(KERN_INFO, sdev,
3025 			"%s skip device_block for SES handle(0x%04x)\n",
3026 			__func__, sas_device_priv_data->sas_target->handle);
3027 			continue;
3028 		}
3029 		_scsih_internal_device_block(sdev, sas_device_priv_data);
3030 	}
3031 
3032 	sas_device_put(sas_device);
3033 }
3034 
3035 /**
3036  * _scsih_block_io_to_children_attached_to_ex
3037  * @ioc: per adapter object
3038  * @sas_expander: the sas_device object
3039  *
3040  * This routine set sdev state to SDEV_BLOCK for all devices
3041  * attached to this expander. This function called when expander is
3042  * pulled.
3043  */
3044 static void
3045 _scsih_block_io_to_children_attached_to_ex(struct MPT3SAS_ADAPTER *ioc,
3046 	struct _sas_node *sas_expander)
3047 {
3048 	struct _sas_port *mpt3sas_port;
3049 	struct _sas_device *sas_device;
3050 	struct _sas_node *expander_sibling;
3051 	unsigned long flags;
3052 
3053 	if (!sas_expander)
3054 		return;
3055 
3056 	list_for_each_entry(mpt3sas_port,
3057 	   &sas_expander->sas_port_list, port_list) {
3058 		if (mpt3sas_port->remote_identify.device_type ==
3059 		    SAS_END_DEVICE) {
3060 			spin_lock_irqsave(&ioc->sas_device_lock, flags);
3061 			sas_device = __mpt3sas_get_sdev_by_addr(ioc,
3062 			    mpt3sas_port->remote_identify.sas_address);
3063 			if (sas_device) {
3064 				set_bit(sas_device->handle,
3065 						ioc->blocking_handles);
3066 				sas_device_put(sas_device);
3067 			}
3068 			spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
3069 		}
3070 	}
3071 
3072 	list_for_each_entry(mpt3sas_port,
3073 	   &sas_expander->sas_port_list, port_list) {
3074 
3075 		if (mpt3sas_port->remote_identify.device_type ==
3076 		    SAS_EDGE_EXPANDER_DEVICE ||
3077 		    mpt3sas_port->remote_identify.device_type ==
3078 		    SAS_FANOUT_EXPANDER_DEVICE) {
3079 			expander_sibling =
3080 			    mpt3sas_scsih_expander_find_by_sas_address(
3081 			    ioc, mpt3sas_port->remote_identify.sas_address);
3082 			_scsih_block_io_to_children_attached_to_ex(ioc,
3083 			    expander_sibling);
3084 		}
3085 	}
3086 }
3087 
3088 /**
3089  * _scsih_block_io_to_children_attached_directly
3090  * @ioc: per adapter object
3091  * @event_data: topology change event data
3092  *
3093  * This routine set sdev state to SDEV_BLOCK for all devices
3094  * direct attached during device pull.
3095  */
3096 static void
3097 _scsih_block_io_to_children_attached_directly(struct MPT3SAS_ADAPTER *ioc,
3098 	Mpi2EventDataSasTopologyChangeList_t *event_data)
3099 {
3100 	int i;
3101 	u16 handle;
3102 	u16 reason_code;
3103 
3104 	for (i = 0; i < event_data->NumEntries; i++) {
3105 		handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
3106 		if (!handle)
3107 			continue;
3108 		reason_code = event_data->PHY[i].PhyStatus &
3109 		    MPI2_EVENT_SAS_TOPO_RC_MASK;
3110 		if (reason_code == MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING)
3111 			_scsih_block_io_device(ioc, handle);
3112 	}
3113 }
3114 
3115 /**
3116  * _scsih_tm_tr_send - send task management request
3117  * @ioc: per adapter object
3118  * @handle: device handle
3119  * Context: interrupt time.
3120  *
3121  * This code is to initiate the device removal handshake protocol
3122  * with controller firmware.  This function will issue target reset
3123  * using high priority request queue.  It will send a sas iounit
3124  * control request (MPI2_SAS_OP_REMOVE_DEVICE) from this completion.
3125  *
3126  * This is designed to send muliple task management request at the same
3127  * time to the fifo. If the fifo is full, we will append the request,
3128  * and process it in a future completion.
3129  */
3130 static void
3131 _scsih_tm_tr_send(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3132 {
3133 	Mpi2SCSITaskManagementRequest_t *mpi_request;
3134 	u16 smid;
3135 	struct _sas_device *sas_device = NULL;
3136 	struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
3137 	u64 sas_address = 0;
3138 	unsigned long flags;
3139 	struct _tr_list *delayed_tr;
3140 	u32 ioc_state;
3141 
3142 	if (ioc->remove_host) {
3143 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3144 			"%s: host has been removed: handle(0x%04x)\n",
3145 			__func__, ioc->name, handle));
3146 		return;
3147 	} else if (ioc->pci_error_recovery) {
3148 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3149 			"%s: host in pci error recovery: handle(0x%04x)\n",
3150 			__func__, ioc->name,
3151 		    handle));
3152 		return;
3153 	}
3154 	ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3155 	if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3156 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3157 			"%s: host is not operational: handle(0x%04x)\n",
3158 			__func__, ioc->name,
3159 		   handle));
3160 		return;
3161 	}
3162 
3163 	/* if PD, then return */
3164 	if (test_bit(handle, ioc->pd_handles))
3165 		return;
3166 
3167 	clear_bit(handle, ioc->pend_os_device_add);
3168 
3169 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
3170 	sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
3171 	if (sas_device && sas_device->starget &&
3172 	    sas_device->starget->hostdata) {
3173 		sas_target_priv_data = sas_device->starget->hostdata;
3174 		sas_target_priv_data->deleted = 1;
3175 		sas_address = sas_device->sas_address;
3176 	}
3177 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
3178 
3179 	if (sas_target_priv_data) {
3180 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3181 			"setting delete flag: handle(0x%04x), sas_addr(0x%016llx)\n",
3182 			ioc->name, handle,
3183 		    (unsigned long long)sas_address));
3184 		if (sas_device->enclosure_handle != 0)
3185 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
3186 			 "setting delete flag:enclosure logical id(0x%016llx),"
3187 			 " slot(%d)\n", ioc->name, (unsigned long long)
3188 			  sas_device->enclosure_logical_id,
3189 			  sas_device->slot));
3190 		if (sas_device->connector_name[0] != '\0')
3191 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
3192 			 "setting delete flag: enclosure level(0x%04x),"
3193 			 " connector name( %s)\n", ioc->name,
3194 			  sas_device->enclosure_level,
3195 			  sas_device->connector_name));
3196 		_scsih_ublock_io_device(ioc, sas_address);
3197 		sas_target_priv_data->handle = MPT3SAS_INVALID_DEVICE_HANDLE;
3198 	}
3199 
3200 	smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_tr_cb_idx);
3201 	if (!smid) {
3202 		delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3203 		if (!delayed_tr)
3204 			goto out;
3205 		INIT_LIST_HEAD(&delayed_tr->list);
3206 		delayed_tr->handle = handle;
3207 		list_add_tail(&delayed_tr->list, &ioc->delayed_tr_list);
3208 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3209 		    "DELAYED:tr:handle(0x%04x), (open)\n",
3210 		    ioc->name, handle));
3211 		goto out;
3212 	}
3213 
3214 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
3215 		"tr_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3216 		ioc->name, handle, smid,
3217 	    ioc->tm_tr_cb_idx));
3218 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3219 	memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
3220 	mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
3221 	mpi_request->DevHandle = cpu_to_le16(handle);
3222 	mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
3223 	set_bit(handle, ioc->device_remove_in_progress);
3224 	ioc->put_smid_hi_priority(ioc, smid, 0);
3225 	mpt3sas_trigger_master(ioc, MASTER_TRIGGER_DEVICE_REMOVAL);
3226 
3227 out:
3228 	if (sas_device)
3229 		sas_device_put(sas_device);
3230 }
3231 
3232 /**
3233  * _scsih_tm_tr_complete -
3234  * @ioc: per adapter object
3235  * @smid: system request message index
3236  * @msix_index: MSIX table index supplied by the OS
3237  * @reply: reply message frame(lower 32bit addr)
3238  * Context: interrupt time.
3239  *
3240  * This is the target reset completion routine.
3241  * This code is part of the code to initiate the device removal
3242  * handshake protocol with controller firmware.
3243  * It will send a sas iounit control request (MPI2_SAS_OP_REMOVE_DEVICE)
3244  *
3245  * Return 1 meaning mf should be freed from _base_interrupt
3246  *        0 means the mf is freed from this function.
3247  */
3248 static u8
3249 _scsih_tm_tr_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
3250 	u32 reply)
3251 {
3252 	u16 handle;
3253 	Mpi2SCSITaskManagementRequest_t *mpi_request_tm;
3254 	Mpi2SCSITaskManagementReply_t *mpi_reply =
3255 	    mpt3sas_base_get_reply_virt_addr(ioc, reply);
3256 	Mpi2SasIoUnitControlRequest_t *mpi_request;
3257 	u16 smid_sas_ctrl;
3258 	u32 ioc_state;
3259 	struct _sc_list *delayed_sc;
3260 
3261 	if (ioc->remove_host) {
3262 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3263 			"%s: host has been removed\n", __func__, ioc->name));
3264 		return 1;
3265 	} else if (ioc->pci_error_recovery) {
3266 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3267 			"%s: host in pci error recovery\n", __func__,
3268 			ioc->name));
3269 		return 1;
3270 	}
3271 	ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3272 	if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3273 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3274 			"%s: host is not operational\n", __func__, ioc->name));
3275 		return 1;
3276 	}
3277 	if (unlikely(!mpi_reply)) {
3278 		pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3279 		    ioc->name, __FILE__, __LINE__, __func__);
3280 		return 1;
3281 	}
3282 	mpi_request_tm = mpt3sas_base_get_msg_frame(ioc, smid);
3283 	handle = le16_to_cpu(mpi_request_tm->DevHandle);
3284 	if (handle != le16_to_cpu(mpi_reply->DevHandle)) {
3285 		dewtprintk(ioc, pr_err(MPT3SAS_FMT
3286 			"spurious interrupt: handle(0x%04x:0x%04x), smid(%d)!!!\n",
3287 			ioc->name, handle,
3288 		    le16_to_cpu(mpi_reply->DevHandle), smid));
3289 		return 0;
3290 	}
3291 
3292 	mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT);
3293 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
3294 	    "tr_complete:handle(0x%04x), (open) smid(%d), ioc_status(0x%04x), "
3295 	    "loginfo(0x%08x), completed(%d)\n", ioc->name,
3296 	    handle, smid, le16_to_cpu(mpi_reply->IOCStatus),
3297 	    le32_to_cpu(mpi_reply->IOCLogInfo),
3298 	    le32_to_cpu(mpi_reply->TerminationCount)));
3299 
3300 	smid_sas_ctrl = mpt3sas_base_get_smid(ioc, ioc->tm_sas_control_cb_idx);
3301 	if (!smid_sas_ctrl) {
3302 		delayed_sc = kzalloc(sizeof(*delayed_sc), GFP_ATOMIC);
3303 		if (!delayed_sc)
3304 			return _scsih_check_for_pending_tm(ioc, smid);
3305 		INIT_LIST_HEAD(&delayed_sc->list);
3306 		delayed_sc->handle = mpi_request_tm->DevHandle;
3307 		list_add_tail(&delayed_sc->list, &ioc->delayed_sc_list);
3308 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3309 		    "DELAYED:sc:handle(0x%04x), (open)\n",
3310 		    ioc->name, handle));
3311 		return _scsih_check_for_pending_tm(ioc, smid);
3312 	}
3313 
3314 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
3315 		"sc_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3316 		ioc->name, handle, smid_sas_ctrl,
3317 	    ioc->tm_sas_control_cb_idx));
3318 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid_sas_ctrl);
3319 	memset(mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
3320 	mpi_request->Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
3321 	mpi_request->Operation = MPI2_SAS_OP_REMOVE_DEVICE;
3322 	mpi_request->DevHandle = mpi_request_tm->DevHandle;
3323 	ioc->put_smid_default(ioc, smid_sas_ctrl);
3324 
3325 	return _scsih_check_for_pending_tm(ioc, smid);
3326 }
3327 
3328 
3329 /**
3330  * _scsih_sas_control_complete - completion routine
3331  * @ioc: per adapter object
3332  * @smid: system request message index
3333  * @msix_index: MSIX table index supplied by the OS
3334  * @reply: reply message frame(lower 32bit addr)
3335  * Context: interrupt time.
3336  *
3337  * This is the sas iounit control completion routine.
3338  * This code is part of the code to initiate the device removal
3339  * handshake protocol with controller firmware.
3340  *
3341  * Return 1 meaning mf should be freed from _base_interrupt
3342  *        0 means the mf is freed from this function.
3343  */
3344 static u8
3345 _scsih_sas_control_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid,
3346 	u8 msix_index, u32 reply)
3347 {
3348 	Mpi2SasIoUnitControlReply_t *mpi_reply =
3349 	    mpt3sas_base_get_reply_virt_addr(ioc, reply);
3350 
3351 	if (likely(mpi_reply)) {
3352 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3353 		"sc_complete:handle(0x%04x), (open) "
3354 		"smid(%d), ioc_status(0x%04x), loginfo(0x%08x)\n",
3355 		ioc->name, le16_to_cpu(mpi_reply->DevHandle), smid,
3356 		le16_to_cpu(mpi_reply->IOCStatus),
3357 		le32_to_cpu(mpi_reply->IOCLogInfo)));
3358 		if (le16_to_cpu(mpi_reply->IOCStatus) ==
3359 		     MPI2_IOCSTATUS_SUCCESS) {
3360 			clear_bit(le16_to_cpu(mpi_reply->DevHandle),
3361 			    ioc->device_remove_in_progress);
3362 		}
3363 	} else {
3364 		pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3365 		    ioc->name, __FILE__, __LINE__, __func__);
3366 	}
3367 	return mpt3sas_check_for_pending_internal_cmds(ioc, smid);
3368 }
3369 
3370 /**
3371  * _scsih_tm_tr_volume_send - send target reset request for volumes
3372  * @ioc: per adapter object
3373  * @handle: device handle
3374  * Context: interrupt time.
3375  *
3376  * This is designed to send muliple task management request at the same
3377  * time to the fifo. If the fifo is full, we will append the request,
3378  * and process it in a future completion.
3379  */
3380 static void
3381 _scsih_tm_tr_volume_send(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3382 {
3383 	Mpi2SCSITaskManagementRequest_t *mpi_request;
3384 	u16 smid;
3385 	struct _tr_list *delayed_tr;
3386 
3387 	if (ioc->shost_recovery || ioc->remove_host ||
3388 	    ioc->pci_error_recovery) {
3389 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3390 			"%s: host reset in progress!\n",
3391 			__func__, ioc->name));
3392 		return;
3393 	}
3394 
3395 	smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_tr_volume_cb_idx);
3396 	if (!smid) {
3397 		delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3398 		if (!delayed_tr)
3399 			return;
3400 		INIT_LIST_HEAD(&delayed_tr->list);
3401 		delayed_tr->handle = handle;
3402 		list_add_tail(&delayed_tr->list, &ioc->delayed_tr_volume_list);
3403 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3404 		    "DELAYED:tr:handle(0x%04x), (open)\n",
3405 		    ioc->name, handle));
3406 		return;
3407 	}
3408 
3409 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
3410 		"tr_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3411 		ioc->name, handle, smid,
3412 	    ioc->tm_tr_volume_cb_idx));
3413 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3414 	memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
3415 	mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
3416 	mpi_request->DevHandle = cpu_to_le16(handle);
3417 	mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
3418 	ioc->put_smid_hi_priority(ioc, smid, 0);
3419 }
3420 
3421 /**
3422  * _scsih_tm_volume_tr_complete - target reset completion
3423  * @ioc: per adapter object
3424  * @smid: system request message index
3425  * @msix_index: MSIX table index supplied by the OS
3426  * @reply: reply message frame(lower 32bit addr)
3427  * Context: interrupt time.
3428  *
3429  * Return 1 meaning mf should be freed from _base_interrupt
3430  *        0 means the mf is freed from this function.
3431  */
3432 static u8
3433 _scsih_tm_volume_tr_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid,
3434 	u8 msix_index, u32 reply)
3435 {
3436 	u16 handle;
3437 	Mpi2SCSITaskManagementRequest_t *mpi_request_tm;
3438 	Mpi2SCSITaskManagementReply_t *mpi_reply =
3439 	    mpt3sas_base_get_reply_virt_addr(ioc, reply);
3440 
3441 	if (ioc->shost_recovery || ioc->remove_host ||
3442 	    ioc->pci_error_recovery) {
3443 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3444 			"%s: host reset in progress!\n",
3445 			__func__, ioc->name));
3446 		return 1;
3447 	}
3448 	if (unlikely(!mpi_reply)) {
3449 		pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
3450 		    ioc->name, __FILE__, __LINE__, __func__);
3451 		return 1;
3452 	}
3453 
3454 	mpi_request_tm = mpt3sas_base_get_msg_frame(ioc, smid);
3455 	handle = le16_to_cpu(mpi_request_tm->DevHandle);
3456 	if (handle != le16_to_cpu(mpi_reply->DevHandle)) {
3457 		dewtprintk(ioc, pr_err(MPT3SAS_FMT
3458 			"spurious interrupt: handle(0x%04x:0x%04x), smid(%d)!!!\n",
3459 			ioc->name, handle,
3460 		    le16_to_cpu(mpi_reply->DevHandle), smid));
3461 		return 0;
3462 	}
3463 
3464 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
3465 	    "tr_complete:handle(0x%04x), (open) smid(%d), ioc_status(0x%04x), "
3466 	    "loginfo(0x%08x), completed(%d)\n", ioc->name,
3467 	    handle, smid, le16_to_cpu(mpi_reply->IOCStatus),
3468 	    le32_to_cpu(mpi_reply->IOCLogInfo),
3469 	    le32_to_cpu(mpi_reply->TerminationCount)));
3470 
3471 	return _scsih_check_for_pending_tm(ioc, smid);
3472 }
3473 
3474 /**
3475  * _scsih_issue_delayed_event_ack - issue delayed Event ACK messages
3476  * @ioc: per adapter object
3477  * @smid: system request message index
3478  * @event: Event ID
3479  * @event_context: used to track events uniquely
3480  *
3481  * Context - processed in interrupt context.
3482  */
3483 static void
3484 _scsih_issue_delayed_event_ack(struct MPT3SAS_ADAPTER *ioc, u16 smid, u16 event,
3485 				u32 event_context)
3486 {
3487 	Mpi2EventAckRequest_t *ack_request;
3488 	int i = smid - ioc->internal_smid;
3489 	unsigned long flags;
3490 
3491 	/* Without releasing the smid just update the
3492 	 * call back index and reuse the same smid for
3493 	 * processing this delayed request
3494 	 */
3495 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
3496 	ioc->internal_lookup[i].cb_idx = ioc->base_cb_idx;
3497 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
3498 
3499 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
3500 		"EVENT ACK: event(0x%04x), smid(%d), cb(%d)\n",
3501 		ioc->name, le16_to_cpu(event), smid,
3502 		ioc->base_cb_idx));
3503 	ack_request = mpt3sas_base_get_msg_frame(ioc, smid);
3504 	memset(ack_request, 0, sizeof(Mpi2EventAckRequest_t));
3505 	ack_request->Function = MPI2_FUNCTION_EVENT_ACK;
3506 	ack_request->Event = event;
3507 	ack_request->EventContext = event_context;
3508 	ack_request->VF_ID = 0;  /* TODO */
3509 	ack_request->VP_ID = 0;
3510 	ioc->put_smid_default(ioc, smid);
3511 }
3512 
3513 /**
3514  * _scsih_issue_delayed_sas_io_unit_ctrl - issue delayed
3515  *				sas_io_unit_ctrl messages
3516  * @ioc: per adapter object
3517  * @smid: system request message index
3518  * @handle: device handle
3519  *
3520  * Context - processed in interrupt context.
3521  */
3522 static void
3523 _scsih_issue_delayed_sas_io_unit_ctrl(struct MPT3SAS_ADAPTER *ioc,
3524 					u16 smid, u16 handle)
3525 	{
3526 		Mpi2SasIoUnitControlRequest_t *mpi_request;
3527 		u32 ioc_state;
3528 		int i = smid - ioc->internal_smid;
3529 		unsigned long flags;
3530 
3531 		if (ioc->remove_host) {
3532 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
3533 			    "%s: host has been removed\n",
3534 			     __func__, ioc->name));
3535 			return;
3536 		} else if (ioc->pci_error_recovery) {
3537 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
3538 			    "%s: host in pci error recovery\n",
3539 			    __func__, ioc->name));
3540 		return;
3541 	}
3542 	ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
3543 	if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3544 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3545 		    "%s: host is not operational\n",
3546 		    __func__, ioc->name));
3547 		return;
3548 	}
3549 
3550 	/* Without releasing the smid just update the
3551 	 * call back index and reuse the same smid for
3552 	 * processing this delayed request
3553 	 */
3554 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
3555 	ioc->internal_lookup[i].cb_idx = ioc->tm_sas_control_cb_idx;
3556 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
3557 
3558 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
3559 	    "sc_send:handle(0x%04x), (open), smid(%d), cb(%d)\n",
3560 	    ioc->name, le16_to_cpu(handle), smid,
3561 	    ioc->tm_sas_control_cb_idx));
3562 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
3563 	memset(mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
3564 	mpi_request->Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
3565 	mpi_request->Operation = MPI2_SAS_OP_REMOVE_DEVICE;
3566 	mpi_request->DevHandle = handle;
3567 	ioc->put_smid_default(ioc, smid);
3568 }
3569 
3570 /**
3571  * _scsih_check_for_pending_internal_cmds - check for pending internal messages
3572  * @ioc: per adapter object
3573  * @smid: system request message index
3574  *
3575  * Context: Executed in interrupt context
3576  *
3577  * This will check delayed internal messages list, and process the
3578  * next request.
3579  *
3580  * Return 1 meaning mf should be freed from _base_interrupt
3581  *        0 means the mf is freed from this function.
3582  */
3583 u8
3584 mpt3sas_check_for_pending_internal_cmds(struct MPT3SAS_ADAPTER *ioc, u16 smid)
3585 {
3586 	struct _sc_list *delayed_sc;
3587 	struct _event_ack_list *delayed_event_ack;
3588 
3589 	if (!list_empty(&ioc->delayed_event_ack_list)) {
3590 		delayed_event_ack = list_entry(ioc->delayed_event_ack_list.next,
3591 						struct _event_ack_list, list);
3592 		_scsih_issue_delayed_event_ack(ioc, smid,
3593 		  delayed_event_ack->Event, delayed_event_ack->EventContext);
3594 		list_del(&delayed_event_ack->list);
3595 		kfree(delayed_event_ack);
3596 		return 0;
3597 	}
3598 
3599 	if (!list_empty(&ioc->delayed_sc_list)) {
3600 		delayed_sc = list_entry(ioc->delayed_sc_list.next,
3601 						struct _sc_list, list);
3602 		_scsih_issue_delayed_sas_io_unit_ctrl(ioc, smid,
3603 						 delayed_sc->handle);
3604 		list_del(&delayed_sc->list);
3605 		kfree(delayed_sc);
3606 		return 0;
3607 	}
3608 	return 1;
3609 }
3610 
3611 /**
3612  * _scsih_check_for_pending_tm - check for pending task management
3613  * @ioc: per adapter object
3614  * @smid: system request message index
3615  *
3616  * This will check delayed target reset list, and feed the
3617  * next reqeust.
3618  *
3619  * Return 1 meaning mf should be freed from _base_interrupt
3620  *        0 means the mf is freed from this function.
3621  */
3622 static u8
3623 _scsih_check_for_pending_tm(struct MPT3SAS_ADAPTER *ioc, u16 smid)
3624 {
3625 	struct _tr_list *delayed_tr;
3626 
3627 	if (!list_empty(&ioc->delayed_tr_volume_list)) {
3628 		delayed_tr = list_entry(ioc->delayed_tr_volume_list.next,
3629 		    struct _tr_list, list);
3630 		mpt3sas_base_free_smid(ioc, smid);
3631 		_scsih_tm_tr_volume_send(ioc, delayed_tr->handle);
3632 		list_del(&delayed_tr->list);
3633 		kfree(delayed_tr);
3634 		return 0;
3635 	}
3636 
3637 	if (!list_empty(&ioc->delayed_tr_list)) {
3638 		delayed_tr = list_entry(ioc->delayed_tr_list.next,
3639 		    struct _tr_list, list);
3640 		mpt3sas_base_free_smid(ioc, smid);
3641 		_scsih_tm_tr_send(ioc, delayed_tr->handle);
3642 		list_del(&delayed_tr->list);
3643 		kfree(delayed_tr);
3644 		return 0;
3645 	}
3646 
3647 	return 1;
3648 }
3649 
3650 /**
3651  * _scsih_check_topo_delete_events - sanity check on topo events
3652  * @ioc: per adapter object
3653  * @event_data: the event data payload
3654  *
3655  * This routine added to better handle cable breaker.
3656  *
3657  * This handles the case where driver receives multiple expander
3658  * add and delete events in a single shot.  When there is a delete event
3659  * the routine will void any pending add events waiting in the event queue.
3660  *
3661  * Return nothing.
3662  */
3663 static void
3664 _scsih_check_topo_delete_events(struct MPT3SAS_ADAPTER *ioc,
3665 	Mpi2EventDataSasTopologyChangeList_t *event_data)
3666 {
3667 	struct fw_event_work *fw_event;
3668 	Mpi2EventDataSasTopologyChangeList_t *local_event_data;
3669 	u16 expander_handle;
3670 	struct _sas_node *sas_expander;
3671 	unsigned long flags;
3672 	int i, reason_code;
3673 	u16 handle;
3674 
3675 	for (i = 0 ; i < event_data->NumEntries; i++) {
3676 		handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
3677 		if (!handle)
3678 			continue;
3679 		reason_code = event_data->PHY[i].PhyStatus &
3680 		    MPI2_EVENT_SAS_TOPO_RC_MASK;
3681 		if (reason_code == MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING)
3682 			_scsih_tm_tr_send(ioc, handle);
3683 	}
3684 
3685 	expander_handle = le16_to_cpu(event_data->ExpanderDevHandle);
3686 	if (expander_handle < ioc->sas_hba.num_phys) {
3687 		_scsih_block_io_to_children_attached_directly(ioc, event_data);
3688 		return;
3689 	}
3690 	if (event_data->ExpStatus ==
3691 	    MPI2_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING) {
3692 		/* put expander attached devices into blocking state */
3693 		spin_lock_irqsave(&ioc->sas_node_lock, flags);
3694 		sas_expander = mpt3sas_scsih_expander_find_by_handle(ioc,
3695 		    expander_handle);
3696 		_scsih_block_io_to_children_attached_to_ex(ioc, sas_expander);
3697 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
3698 		do {
3699 			handle = find_first_bit(ioc->blocking_handles,
3700 			    ioc->facts.MaxDevHandle);
3701 			if (handle < ioc->facts.MaxDevHandle)
3702 				_scsih_block_io_device(ioc, handle);
3703 		} while (test_and_clear_bit(handle, ioc->blocking_handles));
3704 	} else if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_RESPONDING)
3705 		_scsih_block_io_to_children_attached_directly(ioc, event_data);
3706 
3707 	if (event_data->ExpStatus != MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING)
3708 		return;
3709 
3710 	/* mark ignore flag for pending events */
3711 	spin_lock_irqsave(&ioc->fw_event_lock, flags);
3712 	list_for_each_entry(fw_event, &ioc->fw_event_list, list) {
3713 		if (fw_event->event != MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST ||
3714 		    fw_event->ignore)
3715 			continue;
3716 		local_event_data = (Mpi2EventDataSasTopologyChangeList_t *)
3717 				   fw_event->event_data;
3718 		if (local_event_data->ExpStatus ==
3719 		    MPI2_EVENT_SAS_TOPO_ES_ADDED ||
3720 		    local_event_data->ExpStatus ==
3721 		    MPI2_EVENT_SAS_TOPO_ES_RESPONDING) {
3722 			if (le16_to_cpu(local_event_data->ExpanderDevHandle) ==
3723 			    expander_handle) {
3724 				dewtprintk(ioc, pr_info(MPT3SAS_FMT
3725 				    "setting ignoring flag\n", ioc->name));
3726 				fw_event->ignore = 1;
3727 			}
3728 		}
3729 	}
3730 	spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
3731 }
3732 
3733 /**
3734  * _scsih_set_volume_delete_flag - setting volume delete flag
3735  * @ioc: per adapter object
3736  * @handle: device handle
3737  *
3738  * This returns nothing.
3739  */
3740 static void
3741 _scsih_set_volume_delete_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle)
3742 {
3743 	struct _raid_device *raid_device;
3744 	struct MPT3SAS_TARGET *sas_target_priv_data;
3745 	unsigned long flags;
3746 
3747 	spin_lock_irqsave(&ioc->raid_device_lock, flags);
3748 	raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
3749 	if (raid_device && raid_device->starget &&
3750 	    raid_device->starget->hostdata) {
3751 		sas_target_priv_data =
3752 		    raid_device->starget->hostdata;
3753 		sas_target_priv_data->deleted = 1;
3754 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
3755 		    "setting delete flag: handle(0x%04x), "
3756 		    "wwid(0x%016llx)\n", ioc->name, handle,
3757 		    (unsigned long long) raid_device->wwid));
3758 	}
3759 	spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
3760 }
3761 
3762 /**
3763  * _scsih_set_volume_handle_for_tr - set handle for target reset to volume
3764  * @handle: input handle
3765  * @a: handle for volume a
3766  * @b: handle for volume b
3767  *
3768  * IR firmware only supports two raid volumes.  The purpose of this
3769  * routine is to set the volume handle in either a or b. When the given
3770  * input handle is non-zero, or when a and b have not been set before.
3771  */
3772 static void
3773 _scsih_set_volume_handle_for_tr(u16 handle, u16 *a, u16 *b)
3774 {
3775 	if (!handle || handle == *a || handle == *b)
3776 		return;
3777 	if (!*a)
3778 		*a = handle;
3779 	else if (!*b)
3780 		*b = handle;
3781 }
3782 
3783 /**
3784  * _scsih_check_ir_config_unhide_events - check for UNHIDE events
3785  * @ioc: per adapter object
3786  * @event_data: the event data payload
3787  * Context: interrupt time.
3788  *
3789  * This routine will send target reset to volume, followed by target
3790  * resets to the PDs. This is called when a PD has been removed, or
3791  * volume has been deleted or removed. When the target reset is sent
3792  * to volume, the PD target resets need to be queued to start upon
3793  * completion of the volume target reset.
3794  *
3795  * Return nothing.
3796  */
3797 static void
3798 _scsih_check_ir_config_unhide_events(struct MPT3SAS_ADAPTER *ioc,
3799 	Mpi2EventDataIrConfigChangeList_t *event_data)
3800 {
3801 	Mpi2EventIrConfigElement_t *element;
3802 	int i;
3803 	u16 handle, volume_handle, a, b;
3804 	struct _tr_list *delayed_tr;
3805 
3806 	a = 0;
3807 	b = 0;
3808 
3809 	if (ioc->is_warpdrive)
3810 		return;
3811 
3812 	/* Volume Resets for Deleted or Removed */
3813 	element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3814 	for (i = 0; i < event_data->NumElements; i++, element++) {
3815 		if (le32_to_cpu(event_data->Flags) &
3816 		    MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG)
3817 			continue;
3818 		if (element->ReasonCode ==
3819 		    MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED ||
3820 		    element->ReasonCode ==
3821 		    MPI2_EVENT_IR_CHANGE_RC_REMOVED) {
3822 			volume_handle = le16_to_cpu(element->VolDevHandle);
3823 			_scsih_set_volume_delete_flag(ioc, volume_handle);
3824 			_scsih_set_volume_handle_for_tr(volume_handle, &a, &b);
3825 		}
3826 	}
3827 
3828 	/* Volume Resets for UNHIDE events */
3829 	element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3830 	for (i = 0; i < event_data->NumElements; i++, element++) {
3831 		if (le32_to_cpu(event_data->Flags) &
3832 		    MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG)
3833 			continue;
3834 		if (element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_UNHIDE) {
3835 			volume_handle = le16_to_cpu(element->VolDevHandle);
3836 			_scsih_set_volume_handle_for_tr(volume_handle, &a, &b);
3837 		}
3838 	}
3839 
3840 	if (a)
3841 		_scsih_tm_tr_volume_send(ioc, a);
3842 	if (b)
3843 		_scsih_tm_tr_volume_send(ioc, b);
3844 
3845 	/* PD target resets */
3846 	element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
3847 	for (i = 0; i < event_data->NumElements; i++, element++) {
3848 		if (element->ReasonCode != MPI2_EVENT_IR_CHANGE_RC_UNHIDE)
3849 			continue;
3850 		handle = le16_to_cpu(element->PhysDiskDevHandle);
3851 		volume_handle = le16_to_cpu(element->VolDevHandle);
3852 		clear_bit(handle, ioc->pd_handles);
3853 		if (!volume_handle)
3854 			_scsih_tm_tr_send(ioc, handle);
3855 		else if (volume_handle == a || volume_handle == b) {
3856 			delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
3857 			BUG_ON(!delayed_tr);
3858 			INIT_LIST_HEAD(&delayed_tr->list);
3859 			delayed_tr->handle = handle;
3860 			list_add_tail(&delayed_tr->list, &ioc->delayed_tr_list);
3861 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
3862 			    "DELAYED:tr:handle(0x%04x), (open)\n", ioc->name,
3863 			    handle));
3864 		} else
3865 			_scsih_tm_tr_send(ioc, handle);
3866 	}
3867 }
3868 
3869 
3870 /**
3871  * _scsih_check_volume_delete_events - set delete flag for volumes
3872  * @ioc: per adapter object
3873  * @event_data: the event data payload
3874  * Context: interrupt time.
3875  *
3876  * This will handle the case when the cable connected to entire volume is
3877  * pulled. We will take care of setting the deleted flag so normal IO will
3878  * not be sent.
3879  *
3880  * Return nothing.
3881  */
3882 static void
3883 _scsih_check_volume_delete_events(struct MPT3SAS_ADAPTER *ioc,
3884 	Mpi2EventDataIrVolume_t *event_data)
3885 {
3886 	u32 state;
3887 
3888 	if (event_data->ReasonCode != MPI2_EVENT_IR_VOLUME_RC_STATE_CHANGED)
3889 		return;
3890 	state = le32_to_cpu(event_data->NewValue);
3891 	if (state == MPI2_RAID_VOL_STATE_MISSING || state ==
3892 	    MPI2_RAID_VOL_STATE_FAILED)
3893 		_scsih_set_volume_delete_flag(ioc,
3894 		    le16_to_cpu(event_data->VolDevHandle));
3895 }
3896 
3897 /**
3898  * _scsih_temp_threshold_events - display temperature threshold exceeded events
3899  * @ioc: per adapter object
3900  * @event_data: the temp threshold event data
3901  * Context: interrupt time.
3902  *
3903  * Return nothing.
3904  */
3905 static void
3906 _scsih_temp_threshold_events(struct MPT3SAS_ADAPTER *ioc,
3907 	Mpi2EventDataTemperature_t *event_data)
3908 {
3909 	if (ioc->temp_sensors_count >= event_data->SensorNum) {
3910 		pr_err(MPT3SAS_FMT "Temperature Threshold flags %s%s%s%s"
3911 		  " exceeded for Sensor: %d !!!\n", ioc->name,
3912 		  ((le16_to_cpu(event_data->Status) & 0x1) == 1) ? "0 " : " ",
3913 		  ((le16_to_cpu(event_data->Status) & 0x2) == 2) ? "1 " : " ",
3914 		  ((le16_to_cpu(event_data->Status) & 0x4) == 4) ? "2 " : " ",
3915 		  ((le16_to_cpu(event_data->Status) & 0x8) == 8) ? "3 " : " ",
3916 		  event_data->SensorNum);
3917 		pr_err(MPT3SAS_FMT "Current Temp In Celsius: %d\n",
3918 			ioc->name, event_data->CurrentTemperature);
3919 	}
3920 }
3921 
3922 static int _scsih_set_satl_pending(struct scsi_cmnd *scmd, bool pending)
3923 {
3924 	struct MPT3SAS_DEVICE *priv = scmd->device->hostdata;
3925 
3926 	if (scmd->cmnd[0] != ATA_12 && scmd->cmnd[0] != ATA_16)
3927 		return 0;
3928 
3929 	if (pending)
3930 		return test_and_set_bit(0, &priv->ata_command_pending);
3931 
3932 	clear_bit(0, &priv->ata_command_pending);
3933 	return 0;
3934 }
3935 
3936 /**
3937  * _scsih_flush_running_cmds - completing outstanding commands.
3938  * @ioc: per adapter object
3939  *
3940  * The flushing out of all pending scmd commands following host reset,
3941  * where all IO is dropped to the floor.
3942  *
3943  * Return nothing.
3944  */
3945 static void
3946 _scsih_flush_running_cmds(struct MPT3SAS_ADAPTER *ioc)
3947 {
3948 	struct scsi_cmnd *scmd;
3949 	u16 smid;
3950 	u16 count = 0;
3951 
3952 	for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
3953 		scmd = _scsih_scsi_lookup_get_clear(ioc, smid);
3954 		if (!scmd)
3955 			continue;
3956 		count++;
3957 		_scsih_set_satl_pending(scmd, false);
3958 		mpt3sas_base_free_smid(ioc, smid);
3959 		scsi_dma_unmap(scmd);
3960 		if (ioc->pci_error_recovery)
3961 			scmd->result = DID_NO_CONNECT << 16;
3962 		else
3963 			scmd->result = DID_RESET << 16;
3964 		scmd->scsi_done(scmd);
3965 	}
3966 	dtmprintk(ioc, pr_info(MPT3SAS_FMT "completing %d cmds\n",
3967 	    ioc->name, count));
3968 }
3969 
3970 /**
3971  * _scsih_setup_eedp - setup MPI request for EEDP transfer
3972  * @ioc: per adapter object
3973  * @scmd: pointer to scsi command object
3974  * @mpi_request: pointer to the SCSI_IO request message frame
3975  *
3976  * Supporting protection 1 and 3.
3977  *
3978  * Returns nothing
3979  */
3980 static void
3981 _scsih_setup_eedp(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
3982 	Mpi2SCSIIORequest_t *mpi_request)
3983 {
3984 	u16 eedp_flags;
3985 	unsigned char prot_op = scsi_get_prot_op(scmd);
3986 	unsigned char prot_type = scsi_get_prot_type(scmd);
3987 	Mpi25SCSIIORequest_t *mpi_request_3v =
3988 	   (Mpi25SCSIIORequest_t *)mpi_request;
3989 
3990 	if (prot_type == SCSI_PROT_DIF_TYPE0 || prot_op == SCSI_PROT_NORMAL)
3991 		return;
3992 
3993 	if (prot_op ==  SCSI_PROT_READ_STRIP)
3994 		eedp_flags = MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP;
3995 	else if (prot_op ==  SCSI_PROT_WRITE_INSERT)
3996 		eedp_flags = MPI2_SCSIIO_EEDPFLAGS_INSERT_OP;
3997 	else
3998 		return;
3999 
4000 	switch (prot_type) {
4001 	case SCSI_PROT_DIF_TYPE1:
4002 	case SCSI_PROT_DIF_TYPE2:
4003 
4004 		/*
4005 		* enable ref/guard checking
4006 		* auto increment ref tag
4007 		*/
4008 		eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
4009 		    MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
4010 		    MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
4011 		mpi_request->CDB.EEDP32.PrimaryReferenceTag =
4012 		    cpu_to_be32(scsi_prot_ref_tag(scmd));
4013 		break;
4014 
4015 	case SCSI_PROT_DIF_TYPE3:
4016 
4017 		/*
4018 		* enable guard checking
4019 		*/
4020 		eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
4021 
4022 		break;
4023 	}
4024 
4025 	mpi_request_3v->EEDPBlockSize =
4026 	    cpu_to_le16(scmd->device->sector_size);
4027 
4028 	if (ioc->is_gen35_ioc)
4029 		eedp_flags |= MPI25_SCSIIO_EEDPFLAGS_APPTAG_DISABLE_MODE;
4030 	mpi_request->EEDPFlags = cpu_to_le16(eedp_flags);
4031 }
4032 
4033 /**
4034  * _scsih_eedp_error_handling - return sense code for EEDP errors
4035  * @scmd: pointer to scsi command object
4036  * @ioc_status: ioc status
4037  *
4038  * Returns nothing
4039  */
4040 static void
4041 _scsih_eedp_error_handling(struct scsi_cmnd *scmd, u16 ioc_status)
4042 {
4043 	u8 ascq;
4044 
4045 	switch (ioc_status) {
4046 	case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
4047 		ascq = 0x01;
4048 		break;
4049 	case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
4050 		ascq = 0x02;
4051 		break;
4052 	case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4053 		ascq = 0x03;
4054 		break;
4055 	default:
4056 		ascq = 0x00;
4057 		break;
4058 	}
4059 	scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, 0x10,
4060 	    ascq);
4061 	scmd->result = DRIVER_SENSE << 24 | (DID_ABORT << 16) |
4062 	    SAM_STAT_CHECK_CONDITION;
4063 }
4064 
4065 /**
4066  * scsih_qcmd - main scsi request entry point
4067  * @scmd: pointer to scsi command object
4068  * @done: function pointer to be invoked on completion
4069  *
4070  * The callback index is set inside `ioc->scsi_io_cb_idx`.
4071  *
4072  * Returns 0 on success.  If there's a failure, return either:
4073  * SCSI_MLQUEUE_DEVICE_BUSY if the device queue is full, or
4074  * SCSI_MLQUEUE_HOST_BUSY if the entire host queue is full
4075  */
4076 static int
4077 scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
4078 {
4079 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
4080 	struct MPT3SAS_DEVICE *sas_device_priv_data;
4081 	struct MPT3SAS_TARGET *sas_target_priv_data;
4082 	struct _raid_device *raid_device;
4083 	struct request *rq = scmd->request;
4084 	int class;
4085 	Mpi2SCSIIORequest_t *mpi_request;
4086 	u32 mpi_control;
4087 	u16 smid;
4088 	u16 handle;
4089 
4090 	if (ioc->logging_level & MPT_DEBUG_SCSI)
4091 		scsi_print_command(scmd);
4092 
4093 	sas_device_priv_data = scmd->device->hostdata;
4094 	if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
4095 		scmd->result = DID_NO_CONNECT << 16;
4096 		scmd->scsi_done(scmd);
4097 		return 0;
4098 	}
4099 
4100 	if (ioc->pci_error_recovery || ioc->remove_host) {
4101 		scmd->result = DID_NO_CONNECT << 16;
4102 		scmd->scsi_done(scmd);
4103 		return 0;
4104 	}
4105 
4106 	/*
4107 	 * Bug work around for firmware SATL handling.  The loop
4108 	 * is based on atomic operations and ensures consistency
4109 	 * since we're lockless at this point
4110 	 */
4111 	do {
4112 		if (test_bit(0, &sas_device_priv_data->ata_command_pending)) {
4113 			scmd->result = SAM_STAT_BUSY;
4114 			scmd->scsi_done(scmd);
4115 			return 0;
4116 		}
4117 	} while (_scsih_set_satl_pending(scmd, true));
4118 
4119 	sas_target_priv_data = sas_device_priv_data->sas_target;
4120 
4121 	/* invalid device handle */
4122 	handle = sas_target_priv_data->handle;
4123 	if (handle == MPT3SAS_INVALID_DEVICE_HANDLE) {
4124 		scmd->result = DID_NO_CONNECT << 16;
4125 		scmd->scsi_done(scmd);
4126 		return 0;
4127 	}
4128 
4129 
4130 	/* host recovery or link resets sent via IOCTLs */
4131 	if (ioc->shost_recovery || ioc->ioc_link_reset_in_progress)
4132 		return SCSI_MLQUEUE_HOST_BUSY;
4133 
4134 	/* device has been deleted */
4135 	else if (sas_target_priv_data->deleted) {
4136 		scmd->result = DID_NO_CONNECT << 16;
4137 		scmd->scsi_done(scmd);
4138 		return 0;
4139 	/* device busy with task management */
4140 	} else if (sas_target_priv_data->tm_busy ||
4141 	    sas_device_priv_data->block)
4142 		return SCSI_MLQUEUE_DEVICE_BUSY;
4143 
4144 	if (scmd->sc_data_direction == DMA_FROM_DEVICE)
4145 		mpi_control = MPI2_SCSIIO_CONTROL_READ;
4146 	else if (scmd->sc_data_direction == DMA_TO_DEVICE)
4147 		mpi_control = MPI2_SCSIIO_CONTROL_WRITE;
4148 	else
4149 		mpi_control = MPI2_SCSIIO_CONTROL_NODATATRANSFER;
4150 
4151 	/* set tags */
4152 	mpi_control |= MPI2_SCSIIO_CONTROL_SIMPLEQ;
4153 	/* NCQ Prio supported, make sure control indicated high priority */
4154 	if (sas_device_priv_data->ncq_prio_enable) {
4155 		class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq));
4156 		if (class == IOPRIO_CLASS_RT)
4157 			mpi_control |= 1 << MPI2_SCSIIO_CONTROL_CMDPRI_SHIFT;
4158 	}
4159 	/* Make sure Device is not raid volume.
4160 	 * We do not expose raid functionality to upper layer for warpdrive.
4161 	 */
4162 	if (!ioc->is_warpdrive && !scsih_is_raid(&scmd->device->sdev_gendev)
4163 	    && sas_is_tlr_enabled(scmd->device) && scmd->cmd_len != 32)
4164 		mpi_control |= MPI2_SCSIIO_CONTROL_TLR_ON;
4165 
4166 	smid = mpt3sas_base_get_smid_scsiio(ioc, ioc->scsi_io_cb_idx, scmd);
4167 	if (!smid) {
4168 		pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
4169 		    ioc->name, __func__);
4170 		goto out;
4171 	}
4172 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
4173 	memset(mpi_request, 0, sizeof(Mpi2SCSIIORequest_t));
4174 	_scsih_setup_eedp(ioc, scmd, mpi_request);
4175 
4176 	if (scmd->cmd_len == 32)
4177 		mpi_control |= 4 << MPI2_SCSIIO_CONTROL_ADDCDBLEN_SHIFT;
4178 	mpi_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
4179 	if (sas_device_priv_data->sas_target->flags &
4180 	    MPT_TARGET_FLAGS_RAID_COMPONENT)
4181 		mpi_request->Function = MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH;
4182 	else
4183 		mpi_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
4184 	mpi_request->DevHandle = cpu_to_le16(handle);
4185 	mpi_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
4186 	mpi_request->Control = cpu_to_le32(mpi_control);
4187 	mpi_request->IoFlags = cpu_to_le16(scmd->cmd_len);
4188 	mpi_request->MsgFlags = MPI2_SCSIIO_MSGFLAGS_SYSTEM_SENSE_ADDR;
4189 	mpi_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
4190 	mpi_request->SenseBufferLowAddress =
4191 	    mpt3sas_base_get_sense_buffer_dma(ioc, smid);
4192 	mpi_request->SGLOffset0 = offsetof(Mpi2SCSIIORequest_t, SGL) / 4;
4193 	int_to_scsilun(sas_device_priv_data->lun, (struct scsi_lun *)
4194 	    mpi_request->LUN);
4195 	memcpy(mpi_request->CDB.CDB32, scmd->cmnd, scmd->cmd_len);
4196 
4197 	if (mpi_request->DataLength) {
4198 		if (ioc->build_sg_scmd(ioc, scmd, smid)) {
4199 			mpt3sas_base_free_smid(ioc, smid);
4200 			goto out;
4201 		}
4202 	} else
4203 		ioc->build_zero_len_sge(ioc, &mpi_request->SGL);
4204 
4205 	raid_device = sas_target_priv_data->raid_device;
4206 	if (raid_device && raid_device->direct_io_enabled)
4207 		mpt3sas_setup_direct_io(ioc, scmd, raid_device, mpi_request,
4208 		    smid);
4209 
4210 	if (likely(mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)) {
4211 		if (sas_target_priv_data->flags & MPT_TARGET_FASTPATH_IO) {
4212 			mpi_request->IoFlags = cpu_to_le16(scmd->cmd_len |
4213 			    MPI25_SCSIIO_IOFLAGS_FAST_PATH);
4214 			ioc->put_smid_fast_path(ioc, smid, handle);
4215 		} else
4216 			ioc->put_smid_scsi_io(ioc, smid,
4217 			    le16_to_cpu(mpi_request->DevHandle));
4218 	} else
4219 		ioc->put_smid_default(ioc, smid);
4220 	return 0;
4221 
4222  out:
4223 	return SCSI_MLQUEUE_HOST_BUSY;
4224 }
4225 
4226 /**
4227  * _scsih_normalize_sense - normalize descriptor and fixed format sense data
4228  * @sense_buffer: sense data returned by target
4229  * @data: normalized skey/asc/ascq
4230  *
4231  * Return nothing.
4232  */
4233 static void
4234 _scsih_normalize_sense(char *sense_buffer, struct sense_info *data)
4235 {
4236 	if ((sense_buffer[0] & 0x7F) >= 0x72) {
4237 		/* descriptor format */
4238 		data->skey = sense_buffer[1] & 0x0F;
4239 		data->asc = sense_buffer[2];
4240 		data->ascq = sense_buffer[3];
4241 	} else {
4242 		/* fixed format */
4243 		data->skey = sense_buffer[2] & 0x0F;
4244 		data->asc = sense_buffer[12];
4245 		data->ascq = sense_buffer[13];
4246 	}
4247 }
4248 
4249 /**
4250  * _scsih_scsi_ioc_info - translated non-succesfull SCSI_IO request
4251  * @ioc: per adapter object
4252  * @scmd: pointer to scsi command object
4253  * @mpi_reply: reply mf payload returned from firmware
4254  *
4255  * scsi_status - SCSI Status code returned from target device
4256  * scsi_state - state info associated with SCSI_IO determined by ioc
4257  * ioc_status - ioc supplied status info
4258  *
4259  * Return nothing.
4260  */
4261 static void
4262 _scsih_scsi_ioc_info(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
4263 	Mpi2SCSIIOReply_t *mpi_reply, u16 smid)
4264 {
4265 	u32 response_info;
4266 	u8 *response_bytes;
4267 	u16 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) &
4268 	    MPI2_IOCSTATUS_MASK;
4269 	u8 scsi_state = mpi_reply->SCSIState;
4270 	u8 scsi_status = mpi_reply->SCSIStatus;
4271 	char *desc_ioc_state = NULL;
4272 	char *desc_scsi_status = NULL;
4273 	char *desc_scsi_state = ioc->tmp_string;
4274 	u32 log_info = le32_to_cpu(mpi_reply->IOCLogInfo);
4275 	struct _sas_device *sas_device = NULL;
4276 	struct scsi_target *starget = scmd->device->sdev_target;
4277 	struct MPT3SAS_TARGET *priv_target = starget->hostdata;
4278 	char *device_str = NULL;
4279 
4280 	if (!priv_target)
4281 		return;
4282 	if (ioc->hide_ir_msg)
4283 		device_str = "WarpDrive";
4284 	else
4285 		device_str = "volume";
4286 
4287 	if (log_info == 0x31170000)
4288 		return;
4289 
4290 	switch (ioc_status) {
4291 	case MPI2_IOCSTATUS_SUCCESS:
4292 		desc_ioc_state = "success";
4293 		break;
4294 	case MPI2_IOCSTATUS_INVALID_FUNCTION:
4295 		desc_ioc_state = "invalid function";
4296 		break;
4297 	case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
4298 		desc_ioc_state = "scsi recovered error";
4299 		break;
4300 	case MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE:
4301 		desc_ioc_state = "scsi invalid dev handle";
4302 		break;
4303 	case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
4304 		desc_ioc_state = "scsi device not there";
4305 		break;
4306 	case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
4307 		desc_ioc_state = "scsi data overrun";
4308 		break;
4309 	case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
4310 		desc_ioc_state = "scsi data underrun";
4311 		break;
4312 	case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
4313 		desc_ioc_state = "scsi io data error";
4314 		break;
4315 	case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
4316 		desc_ioc_state = "scsi protocol error";
4317 		break;
4318 	case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
4319 		desc_ioc_state = "scsi task terminated";
4320 		break;
4321 	case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
4322 		desc_ioc_state = "scsi residual mismatch";
4323 		break;
4324 	case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
4325 		desc_ioc_state = "scsi task mgmt failed";
4326 		break;
4327 	case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
4328 		desc_ioc_state = "scsi ioc terminated";
4329 		break;
4330 	case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
4331 		desc_ioc_state = "scsi ext terminated";
4332 		break;
4333 	case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
4334 		desc_ioc_state = "eedp guard error";
4335 		break;
4336 	case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4337 		desc_ioc_state = "eedp ref tag error";
4338 		break;
4339 	case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
4340 		desc_ioc_state = "eedp app tag error";
4341 		break;
4342 	case MPI2_IOCSTATUS_INSUFFICIENT_POWER:
4343 		desc_ioc_state = "insufficient power";
4344 		break;
4345 	default:
4346 		desc_ioc_state = "unknown";
4347 		break;
4348 	}
4349 
4350 	switch (scsi_status) {
4351 	case MPI2_SCSI_STATUS_GOOD:
4352 		desc_scsi_status = "good";
4353 		break;
4354 	case MPI2_SCSI_STATUS_CHECK_CONDITION:
4355 		desc_scsi_status = "check condition";
4356 		break;
4357 	case MPI2_SCSI_STATUS_CONDITION_MET:
4358 		desc_scsi_status = "condition met";
4359 		break;
4360 	case MPI2_SCSI_STATUS_BUSY:
4361 		desc_scsi_status = "busy";
4362 		break;
4363 	case MPI2_SCSI_STATUS_INTERMEDIATE:
4364 		desc_scsi_status = "intermediate";
4365 		break;
4366 	case MPI2_SCSI_STATUS_INTERMEDIATE_CONDMET:
4367 		desc_scsi_status = "intermediate condmet";
4368 		break;
4369 	case MPI2_SCSI_STATUS_RESERVATION_CONFLICT:
4370 		desc_scsi_status = "reservation conflict";
4371 		break;
4372 	case MPI2_SCSI_STATUS_COMMAND_TERMINATED:
4373 		desc_scsi_status = "command terminated";
4374 		break;
4375 	case MPI2_SCSI_STATUS_TASK_SET_FULL:
4376 		desc_scsi_status = "task set full";
4377 		break;
4378 	case MPI2_SCSI_STATUS_ACA_ACTIVE:
4379 		desc_scsi_status = "aca active";
4380 		break;
4381 	case MPI2_SCSI_STATUS_TASK_ABORTED:
4382 		desc_scsi_status = "task aborted";
4383 		break;
4384 	default:
4385 		desc_scsi_status = "unknown";
4386 		break;
4387 	}
4388 
4389 	desc_scsi_state[0] = '\0';
4390 	if (!scsi_state)
4391 		desc_scsi_state = " ";
4392 	if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID)
4393 		strcat(desc_scsi_state, "response info ");
4394 	if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4395 		strcat(desc_scsi_state, "state terminated ");
4396 	if (scsi_state & MPI2_SCSI_STATE_NO_SCSI_STATUS)
4397 		strcat(desc_scsi_state, "no status ");
4398 	if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_FAILED)
4399 		strcat(desc_scsi_state, "autosense failed ");
4400 	if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID)
4401 		strcat(desc_scsi_state, "autosense valid ");
4402 
4403 	scsi_print_command(scmd);
4404 
4405 	if (priv_target->flags & MPT_TARGET_FLAGS_VOLUME) {
4406 		pr_warn(MPT3SAS_FMT "\t%s wwid(0x%016llx)\n", ioc->name,
4407 		    device_str, (unsigned long long)priv_target->sas_address);
4408 	} else {
4409 		sas_device = mpt3sas_get_sdev_from_target(ioc, priv_target);
4410 		if (sas_device) {
4411 			pr_warn(MPT3SAS_FMT
4412 				"\tsas_address(0x%016llx), phy(%d)\n",
4413 				ioc->name, (unsigned long long)
4414 			    sas_device->sas_address, sas_device->phy);
4415 			if (sas_device->enclosure_handle != 0)
4416 				pr_warn(MPT3SAS_FMT
4417 				  "\tenclosure_logical_id(0x%016llx),"
4418 				  "slot(%d)\n", ioc->name,
4419 				  (unsigned long long)
4420 				  sas_device->enclosure_logical_id,
4421 				  sas_device->slot);
4422 			if (sas_device->connector_name[0])
4423 				pr_warn(MPT3SAS_FMT
4424 				  "\tenclosure level(0x%04x),"
4425 				  " connector name( %s)\n", ioc->name,
4426 				  sas_device->enclosure_level,
4427 				  sas_device->connector_name);
4428 
4429 			sas_device_put(sas_device);
4430 		}
4431 	}
4432 
4433 	pr_warn(MPT3SAS_FMT
4434 		"\thandle(0x%04x), ioc_status(%s)(0x%04x), smid(%d)\n",
4435 		ioc->name, le16_to_cpu(mpi_reply->DevHandle),
4436 	    desc_ioc_state, ioc_status, smid);
4437 	pr_warn(MPT3SAS_FMT
4438 		"\trequest_len(%d), underflow(%d), resid(%d)\n",
4439 		ioc->name, scsi_bufflen(scmd), scmd->underflow,
4440 	    scsi_get_resid(scmd));
4441 	pr_warn(MPT3SAS_FMT
4442 		"\ttag(%d), transfer_count(%d), sc->result(0x%08x)\n",
4443 		ioc->name, le16_to_cpu(mpi_reply->TaskTag),
4444 	    le32_to_cpu(mpi_reply->TransferCount), scmd->result);
4445 	pr_warn(MPT3SAS_FMT
4446 		"\tscsi_status(%s)(0x%02x), scsi_state(%s)(0x%02x)\n",
4447 		ioc->name, desc_scsi_status,
4448 	    scsi_status, desc_scsi_state, scsi_state);
4449 
4450 	if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID) {
4451 		struct sense_info data;
4452 		_scsih_normalize_sense(scmd->sense_buffer, &data);
4453 		pr_warn(MPT3SAS_FMT
4454 			"\t[sense_key,asc,ascq]: [0x%02x,0x%02x,0x%02x], count(%d)\n",
4455 			ioc->name, data.skey,
4456 		    data.asc, data.ascq, le32_to_cpu(mpi_reply->SenseCount));
4457 	}
4458 
4459 	if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID) {
4460 		response_info = le32_to_cpu(mpi_reply->ResponseInfo);
4461 		response_bytes = (u8 *)&response_info;
4462 		_scsih_response_code(ioc, response_bytes[0]);
4463 	}
4464 }
4465 
4466 /**
4467  * _scsih_turn_on_pfa_led - illuminate PFA LED
4468  * @ioc: per adapter object
4469  * @handle: device handle
4470  * Context: process
4471  *
4472  * Return nothing.
4473  */
4474 static void
4475 _scsih_turn_on_pfa_led(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4476 {
4477 	Mpi2SepReply_t mpi_reply;
4478 	Mpi2SepRequest_t mpi_request;
4479 	struct _sas_device *sas_device;
4480 
4481 	sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
4482 	if (!sas_device)
4483 		return;
4484 
4485 	memset(&mpi_request, 0, sizeof(Mpi2SepRequest_t));
4486 	mpi_request.Function = MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR;
4487 	mpi_request.Action = MPI2_SEP_REQ_ACTION_WRITE_STATUS;
4488 	mpi_request.SlotStatus =
4489 	    cpu_to_le32(MPI2_SEP_REQ_SLOTSTATUS_PREDICTED_FAULT);
4490 	mpi_request.DevHandle = cpu_to_le16(handle);
4491 	mpi_request.Flags = MPI2_SEP_REQ_FLAGS_DEVHANDLE_ADDRESS;
4492 	if ((mpt3sas_base_scsi_enclosure_processor(ioc, &mpi_reply,
4493 	    &mpi_request)) != 0) {
4494 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", ioc->name,
4495 		__FILE__, __LINE__, __func__);
4496 		goto out;
4497 	}
4498 	sas_device->pfa_led_on = 1;
4499 
4500 	if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo) {
4501 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
4502 			"enclosure_processor: ioc_status (0x%04x), loginfo(0x%08x)\n",
4503 			ioc->name, le16_to_cpu(mpi_reply.IOCStatus),
4504 		    le32_to_cpu(mpi_reply.IOCLogInfo)));
4505 		goto out;
4506 	}
4507 out:
4508 	sas_device_put(sas_device);
4509 }
4510 
4511 /**
4512  * _scsih_turn_off_pfa_led - turn off Fault LED
4513  * @ioc: per adapter object
4514  * @sas_device: sas device whose PFA LED has to turned off
4515  * Context: process
4516  *
4517  * Return nothing.
4518  */
4519 static void
4520 _scsih_turn_off_pfa_led(struct MPT3SAS_ADAPTER *ioc,
4521 	struct _sas_device *sas_device)
4522 {
4523 	Mpi2SepReply_t mpi_reply;
4524 	Mpi2SepRequest_t mpi_request;
4525 
4526 	memset(&mpi_request, 0, sizeof(Mpi2SepRequest_t));
4527 	mpi_request.Function = MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR;
4528 	mpi_request.Action = MPI2_SEP_REQ_ACTION_WRITE_STATUS;
4529 	mpi_request.SlotStatus = 0;
4530 	mpi_request.Slot = cpu_to_le16(sas_device->slot);
4531 	mpi_request.DevHandle = 0;
4532 	mpi_request.EnclosureHandle = cpu_to_le16(sas_device->enclosure_handle);
4533 	mpi_request.Flags = MPI2_SEP_REQ_FLAGS_ENCLOSURE_SLOT_ADDRESS;
4534 	if ((mpt3sas_base_scsi_enclosure_processor(ioc, &mpi_reply,
4535 		&mpi_request)) != 0) {
4536 		printk(MPT3SAS_FMT "failure at %s:%d/%s()!\n", ioc->name,
4537 		__FILE__, __LINE__, __func__);
4538 		return;
4539 	}
4540 
4541 	if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo) {
4542 		dewtprintk(ioc, printk(MPT3SAS_FMT
4543 		 "enclosure_processor: ioc_status (0x%04x), loginfo(0x%08x)\n",
4544 		 ioc->name, le16_to_cpu(mpi_reply.IOCStatus),
4545 		 le32_to_cpu(mpi_reply.IOCLogInfo)));
4546 		return;
4547 	}
4548 }
4549 
4550 /**
4551  * _scsih_send_event_to_turn_on_pfa_led - fire delayed event
4552  * @ioc: per adapter object
4553  * @handle: device handle
4554  * Context: interrupt.
4555  *
4556  * Return nothing.
4557  */
4558 static void
4559 _scsih_send_event_to_turn_on_pfa_led(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4560 {
4561 	struct fw_event_work *fw_event;
4562 
4563 	fw_event = alloc_fw_event_work(0);
4564 	if (!fw_event)
4565 		return;
4566 	fw_event->event = MPT3SAS_TURN_ON_PFA_LED;
4567 	fw_event->device_handle = handle;
4568 	fw_event->ioc = ioc;
4569 	_scsih_fw_event_add(ioc, fw_event);
4570 	fw_event_work_put(fw_event);
4571 }
4572 
4573 /**
4574  * _scsih_smart_predicted_fault - process smart errors
4575  * @ioc: per adapter object
4576  * @handle: device handle
4577  * Context: interrupt.
4578  *
4579  * Return nothing.
4580  */
4581 static void
4582 _scsih_smart_predicted_fault(struct MPT3SAS_ADAPTER *ioc, u16 handle)
4583 {
4584 	struct scsi_target *starget;
4585 	struct MPT3SAS_TARGET *sas_target_priv_data;
4586 	Mpi2EventNotificationReply_t *event_reply;
4587 	Mpi2EventDataSasDeviceStatusChange_t *event_data;
4588 	struct _sas_device *sas_device;
4589 	ssize_t sz;
4590 	unsigned long flags;
4591 
4592 	/* only handle non-raid devices */
4593 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
4594 	sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
4595 	if (!sas_device)
4596 		goto out_unlock;
4597 
4598 	starget = sas_device->starget;
4599 	sas_target_priv_data = starget->hostdata;
4600 
4601 	if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) ||
4602 	   ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)))
4603 		goto out_unlock;
4604 
4605 	if (sas_device->enclosure_handle != 0)
4606 		starget_printk(KERN_INFO, starget, "predicted fault, "
4607 			"enclosure logical id(0x%016llx), slot(%d)\n",
4608 			(unsigned long long)sas_device->enclosure_logical_id,
4609 			sas_device->slot);
4610 	if (sas_device->connector_name[0] != '\0')
4611 		starget_printk(KERN_WARNING, starget, "predicted fault, "
4612 			"enclosure level(0x%04x), connector name( %s)\n",
4613 			sas_device->enclosure_level,
4614 			sas_device->connector_name);
4615 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
4616 
4617 	if (ioc->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM)
4618 		_scsih_send_event_to_turn_on_pfa_led(ioc, handle);
4619 
4620 	/* insert into event log */
4621 	sz = offsetof(Mpi2EventNotificationReply_t, EventData) +
4622 	     sizeof(Mpi2EventDataSasDeviceStatusChange_t);
4623 	event_reply = kzalloc(sz, GFP_KERNEL);
4624 	if (!event_reply) {
4625 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4626 		    ioc->name, __FILE__, __LINE__, __func__);
4627 		goto out;
4628 	}
4629 
4630 	event_reply->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
4631 	event_reply->Event =
4632 	    cpu_to_le16(MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
4633 	event_reply->MsgLength = sz/4;
4634 	event_reply->EventDataLength =
4635 	    cpu_to_le16(sizeof(Mpi2EventDataSasDeviceStatusChange_t)/4);
4636 	event_data = (Mpi2EventDataSasDeviceStatusChange_t *)
4637 	    event_reply->EventData;
4638 	event_data->ReasonCode = MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA;
4639 	event_data->ASC = 0x5D;
4640 	event_data->DevHandle = cpu_to_le16(handle);
4641 	event_data->SASAddress = cpu_to_le64(sas_target_priv_data->sas_address);
4642 	mpt3sas_ctl_add_to_event_log(ioc, event_reply);
4643 	kfree(event_reply);
4644 out:
4645 	if (sas_device)
4646 		sas_device_put(sas_device);
4647 	return;
4648 
4649 out_unlock:
4650 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
4651 	goto out;
4652 }
4653 
4654 /**
4655  * _scsih_io_done - scsi request callback
4656  * @ioc: per adapter object
4657  * @smid: system request message index
4658  * @msix_index: MSIX table index supplied by the OS
4659  * @reply: reply message frame(lower 32bit addr)
4660  *
4661  * Callback handler when using _scsih_qcmd.
4662  *
4663  * Return 1 meaning mf should be freed from _base_interrupt
4664  *        0 means the mf is freed from this function.
4665  */
4666 static u8
4667 _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
4668 {
4669 	Mpi2SCSIIORequest_t *mpi_request;
4670 	Mpi2SCSIIOReply_t *mpi_reply;
4671 	struct scsi_cmnd *scmd;
4672 	u16 ioc_status;
4673 	u32 xfer_cnt;
4674 	u8 scsi_state;
4675 	u8 scsi_status;
4676 	u32 log_info;
4677 	struct MPT3SAS_DEVICE *sas_device_priv_data;
4678 	u32 response_code = 0;
4679 	unsigned long flags;
4680 
4681 	mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
4682 
4683 	if (ioc->broadcast_aen_busy || ioc->pci_error_recovery ||
4684 			ioc->got_task_abort_from_ioctl)
4685 		scmd = _scsih_scsi_lookup_get_clear(ioc, smid);
4686 	else
4687 		scmd = __scsih_scsi_lookup_get_clear(ioc, smid);
4688 
4689 	if (scmd == NULL)
4690 		return 1;
4691 
4692 	_scsih_set_satl_pending(scmd, false);
4693 
4694 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
4695 
4696 	if (mpi_reply == NULL) {
4697 		scmd->result = DID_OK << 16;
4698 		goto out;
4699 	}
4700 
4701 	sas_device_priv_data = scmd->device->hostdata;
4702 	if (!sas_device_priv_data || !sas_device_priv_data->sas_target ||
4703 	     sas_device_priv_data->sas_target->deleted) {
4704 		scmd->result = DID_NO_CONNECT << 16;
4705 		goto out;
4706 	}
4707 	ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
4708 
4709 	/*
4710 	 * WARPDRIVE: If direct_io is set then it is directIO,
4711 	 * the failed direct I/O should be redirected to volume
4712 	 */
4713 	if (mpt3sas_scsi_direct_io_get(ioc, smid) &&
4714 	     ((ioc_status & MPI2_IOCSTATUS_MASK)
4715 	      != MPI2_IOCSTATUS_SCSI_TASK_TERMINATED)) {
4716 		spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4717 		ioc->scsi_lookup[smid - 1].scmd = scmd;
4718 		spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4719 		mpt3sas_scsi_direct_io_set(ioc, smid, 0);
4720 		memcpy(mpi_request->CDB.CDB32, scmd->cmnd, scmd->cmd_len);
4721 		mpi_request->DevHandle =
4722 		    cpu_to_le16(sas_device_priv_data->sas_target->handle);
4723 		ioc->put_smid_scsi_io(ioc, smid,
4724 		    sas_device_priv_data->sas_target->handle);
4725 		return 0;
4726 	}
4727 	/* turning off TLR */
4728 	scsi_state = mpi_reply->SCSIState;
4729 	if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID)
4730 		response_code =
4731 		    le32_to_cpu(mpi_reply->ResponseInfo) & 0xFF;
4732 	if (!sas_device_priv_data->tlr_snoop_check) {
4733 		sas_device_priv_data->tlr_snoop_check++;
4734 		if (!ioc->is_warpdrive &&
4735 		    !scsih_is_raid(&scmd->device->sdev_gendev) &&
4736 		    sas_is_tlr_enabled(scmd->device) &&
4737 		    response_code == MPI2_SCSITASKMGMT_RSP_INVALID_FRAME) {
4738 			sas_disable_tlr(scmd->device);
4739 			sdev_printk(KERN_INFO, scmd->device, "TLR disabled\n");
4740 		}
4741 	}
4742 
4743 	xfer_cnt = le32_to_cpu(mpi_reply->TransferCount);
4744 	scsi_set_resid(scmd, scsi_bufflen(scmd) - xfer_cnt);
4745 	if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
4746 		log_info =  le32_to_cpu(mpi_reply->IOCLogInfo);
4747 	else
4748 		log_info = 0;
4749 	ioc_status &= MPI2_IOCSTATUS_MASK;
4750 	scsi_status = mpi_reply->SCSIStatus;
4751 
4752 	if (ioc_status == MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN && xfer_cnt == 0 &&
4753 	    (scsi_status == MPI2_SCSI_STATUS_BUSY ||
4754 	     scsi_status == MPI2_SCSI_STATUS_RESERVATION_CONFLICT ||
4755 	     scsi_status == MPI2_SCSI_STATUS_TASK_SET_FULL)) {
4756 		ioc_status = MPI2_IOCSTATUS_SUCCESS;
4757 	}
4758 
4759 	if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID) {
4760 		struct sense_info data;
4761 		const void *sense_data = mpt3sas_base_get_sense_buffer(ioc,
4762 		    smid);
4763 		u32 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE,
4764 		    le32_to_cpu(mpi_reply->SenseCount));
4765 		memcpy(scmd->sense_buffer, sense_data, sz);
4766 		_scsih_normalize_sense(scmd->sense_buffer, &data);
4767 		/* failure prediction threshold exceeded */
4768 		if (data.asc == 0x5D)
4769 			_scsih_smart_predicted_fault(ioc,
4770 			    le16_to_cpu(mpi_reply->DevHandle));
4771 		mpt3sas_trigger_scsi(ioc, data.skey, data.asc, data.ascq);
4772 
4773 		if ((ioc->logging_level & MPT_DEBUG_REPLY) &&
4774 		     ((scmd->sense_buffer[2] == UNIT_ATTENTION) ||
4775 		     (scmd->sense_buffer[2] == MEDIUM_ERROR) ||
4776 		     (scmd->sense_buffer[2] == HARDWARE_ERROR)))
4777 			_scsih_scsi_ioc_info(ioc, scmd, mpi_reply, smid);
4778 	}
4779 	switch (ioc_status) {
4780 	case MPI2_IOCSTATUS_BUSY:
4781 	case MPI2_IOCSTATUS_INSUFFICIENT_RESOURCES:
4782 		scmd->result = SAM_STAT_BUSY;
4783 		break;
4784 
4785 	case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
4786 		scmd->result = DID_NO_CONNECT << 16;
4787 		break;
4788 
4789 	case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
4790 		if (sas_device_priv_data->block) {
4791 			scmd->result = DID_TRANSPORT_DISRUPTED << 16;
4792 			goto out;
4793 		}
4794 		if (log_info == 0x31110630) {
4795 			if (scmd->retries > 2) {
4796 				scmd->result = DID_NO_CONNECT << 16;
4797 				scsi_device_set_state(scmd->device,
4798 				    SDEV_OFFLINE);
4799 			} else {
4800 				scmd->result = DID_SOFT_ERROR << 16;
4801 				scmd->device->expecting_cc_ua = 1;
4802 			}
4803 			break;
4804 		} else if (log_info == VIRTUAL_IO_FAILED_RETRY) {
4805 			scmd->result = DID_RESET << 16;
4806 			break;
4807 		}
4808 		scmd->result = DID_SOFT_ERROR << 16;
4809 		break;
4810 	case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
4811 	case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
4812 		scmd->result = DID_RESET << 16;
4813 		break;
4814 
4815 	case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
4816 		if ((xfer_cnt == 0) || (scmd->underflow > xfer_cnt))
4817 			scmd->result = DID_SOFT_ERROR << 16;
4818 		else
4819 			scmd->result = (DID_OK << 16) | scsi_status;
4820 		break;
4821 
4822 	case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
4823 		scmd->result = (DID_OK << 16) | scsi_status;
4824 
4825 		if ((scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID))
4826 			break;
4827 
4828 		if (xfer_cnt < scmd->underflow) {
4829 			if (scsi_status == SAM_STAT_BUSY)
4830 				scmd->result = SAM_STAT_BUSY;
4831 			else
4832 				scmd->result = DID_SOFT_ERROR << 16;
4833 		} else if (scsi_state & (MPI2_SCSI_STATE_AUTOSENSE_FAILED |
4834 		     MPI2_SCSI_STATE_NO_SCSI_STATUS))
4835 			scmd->result = DID_SOFT_ERROR << 16;
4836 		else if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4837 			scmd->result = DID_RESET << 16;
4838 		else if (!xfer_cnt && scmd->cmnd[0] == REPORT_LUNS) {
4839 			mpi_reply->SCSIState = MPI2_SCSI_STATE_AUTOSENSE_VALID;
4840 			mpi_reply->SCSIStatus = SAM_STAT_CHECK_CONDITION;
4841 			scmd->result = (DRIVER_SENSE << 24) |
4842 			    SAM_STAT_CHECK_CONDITION;
4843 			scmd->sense_buffer[0] = 0x70;
4844 			scmd->sense_buffer[2] = ILLEGAL_REQUEST;
4845 			scmd->sense_buffer[12] = 0x20;
4846 			scmd->sense_buffer[13] = 0;
4847 		}
4848 		break;
4849 
4850 	case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
4851 		scsi_set_resid(scmd, 0);
4852 	case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
4853 	case MPI2_IOCSTATUS_SUCCESS:
4854 		scmd->result = (DID_OK << 16) | scsi_status;
4855 		if (response_code ==
4856 		    MPI2_SCSITASKMGMT_RSP_INVALID_FRAME ||
4857 		    (scsi_state & (MPI2_SCSI_STATE_AUTOSENSE_FAILED |
4858 		     MPI2_SCSI_STATE_NO_SCSI_STATUS)))
4859 			scmd->result = DID_SOFT_ERROR << 16;
4860 		else if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
4861 			scmd->result = DID_RESET << 16;
4862 		break;
4863 
4864 	case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
4865 	case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
4866 	case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
4867 		_scsih_eedp_error_handling(scmd, ioc_status);
4868 		break;
4869 
4870 	case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
4871 	case MPI2_IOCSTATUS_INVALID_FUNCTION:
4872 	case MPI2_IOCSTATUS_INVALID_SGL:
4873 	case MPI2_IOCSTATUS_INTERNAL_ERROR:
4874 	case MPI2_IOCSTATUS_INVALID_FIELD:
4875 	case MPI2_IOCSTATUS_INVALID_STATE:
4876 	case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
4877 	case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
4878 	case MPI2_IOCSTATUS_INSUFFICIENT_POWER:
4879 	default:
4880 		scmd->result = DID_SOFT_ERROR << 16;
4881 		break;
4882 
4883 	}
4884 
4885 	if (scmd->result && (ioc->logging_level & MPT_DEBUG_REPLY))
4886 		_scsih_scsi_ioc_info(ioc , scmd, mpi_reply, smid);
4887 
4888  out:
4889 
4890 	scsi_dma_unmap(scmd);
4891 
4892 	scmd->scsi_done(scmd);
4893 	return 1;
4894 }
4895 
4896 /**
4897  * _scsih_sas_host_refresh - refreshing sas host object contents
4898  * @ioc: per adapter object
4899  * Context: user
4900  *
4901  * During port enable, fw will send topology events for every device. Its
4902  * possible that the handles may change from the previous setting, so this
4903  * code keeping handles updating if changed.
4904  *
4905  * Return nothing.
4906  */
4907 static void
4908 _scsih_sas_host_refresh(struct MPT3SAS_ADAPTER *ioc)
4909 {
4910 	u16 sz;
4911 	u16 ioc_status;
4912 	int i;
4913 	Mpi2ConfigReply_t mpi_reply;
4914 	Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
4915 	u16 attached_handle;
4916 	u8 link_rate;
4917 
4918 	dtmprintk(ioc, pr_info(MPT3SAS_FMT
4919 	    "updating handles for sas_host(0x%016llx)\n",
4920 	    ioc->name, (unsigned long long)ioc->sas_hba.sas_address));
4921 
4922 	sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys
4923 	    * sizeof(Mpi2SasIOUnit0PhyData_t));
4924 	sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
4925 	if (!sas_iounit_pg0) {
4926 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4927 		    ioc->name, __FILE__, __LINE__, __func__);
4928 		return;
4929 	}
4930 
4931 	if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
4932 	    sas_iounit_pg0, sz)) != 0)
4933 		goto out;
4934 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
4935 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
4936 		goto out;
4937 	for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
4938 		link_rate = sas_iounit_pg0->PhyData[i].NegotiatedLinkRate >> 4;
4939 		if (i == 0)
4940 			ioc->sas_hba.handle = le16_to_cpu(sas_iounit_pg0->
4941 			    PhyData[0].ControllerDevHandle);
4942 		ioc->sas_hba.phy[i].handle = ioc->sas_hba.handle;
4943 		attached_handle = le16_to_cpu(sas_iounit_pg0->PhyData[i].
4944 		    AttachedDevHandle);
4945 		if (attached_handle && link_rate < MPI2_SAS_NEG_LINK_RATE_1_5)
4946 			link_rate = MPI2_SAS_NEG_LINK_RATE_1_5;
4947 		mpt3sas_transport_update_links(ioc, ioc->sas_hba.sas_address,
4948 		    attached_handle, i, link_rate);
4949 	}
4950  out:
4951 	kfree(sas_iounit_pg0);
4952 }
4953 
4954 /**
4955  * _scsih_sas_host_add - create sas host object
4956  * @ioc: per adapter object
4957  *
4958  * Creating host side data object, stored in ioc->sas_hba
4959  *
4960  * Return nothing.
4961  */
4962 static void
4963 _scsih_sas_host_add(struct MPT3SAS_ADAPTER *ioc)
4964 {
4965 	int i;
4966 	Mpi2ConfigReply_t mpi_reply;
4967 	Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
4968 	Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
4969 	Mpi2SasPhyPage0_t phy_pg0;
4970 	Mpi2SasDevicePage0_t sas_device_pg0;
4971 	Mpi2SasEnclosurePage0_t enclosure_pg0;
4972 	u16 ioc_status;
4973 	u16 sz;
4974 	u8 device_missing_delay;
4975 	u8 num_phys;
4976 
4977 	mpt3sas_config_get_number_hba_phys(ioc, &num_phys);
4978 	if (!num_phys) {
4979 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4980 		    ioc->name, __FILE__, __LINE__, __func__);
4981 		return;
4982 	}
4983 	ioc->sas_hba.phy = kcalloc(num_phys,
4984 	    sizeof(struct _sas_phy), GFP_KERNEL);
4985 	if (!ioc->sas_hba.phy) {
4986 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4987 		    ioc->name, __FILE__, __LINE__, __func__);
4988 		goto out;
4989 	}
4990 	ioc->sas_hba.num_phys = num_phys;
4991 
4992 	/* sas_iounit page 0 */
4993 	sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys *
4994 	    sizeof(Mpi2SasIOUnit0PhyData_t));
4995 	sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
4996 	if (!sas_iounit_pg0) {
4997 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
4998 		    ioc->name, __FILE__, __LINE__, __func__);
4999 		return;
5000 	}
5001 	if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
5002 	    sas_iounit_pg0, sz))) {
5003 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5004 		    ioc->name, __FILE__, __LINE__, __func__);
5005 		goto out;
5006 	}
5007 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5008 	    MPI2_IOCSTATUS_MASK;
5009 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5010 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5011 		    ioc->name, __FILE__, __LINE__, __func__);
5012 		goto out;
5013 	}
5014 
5015 	/* sas_iounit page 1 */
5016 	sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
5017 	    sizeof(Mpi2SasIOUnit1PhyData_t));
5018 	sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
5019 	if (!sas_iounit_pg1) {
5020 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5021 		    ioc->name, __FILE__, __LINE__, __func__);
5022 		goto out;
5023 	}
5024 	if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
5025 	    sas_iounit_pg1, sz))) {
5026 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5027 		    ioc->name, __FILE__, __LINE__, __func__);
5028 		goto out;
5029 	}
5030 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5031 	    MPI2_IOCSTATUS_MASK;
5032 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5033 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5034 		    ioc->name, __FILE__, __LINE__, __func__);
5035 		goto out;
5036 	}
5037 
5038 	ioc->io_missing_delay =
5039 	    sas_iounit_pg1->IODeviceMissingDelay;
5040 	device_missing_delay =
5041 	    sas_iounit_pg1->ReportDeviceMissingDelay;
5042 	if (device_missing_delay & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
5043 		ioc->device_missing_delay = (device_missing_delay &
5044 		    MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
5045 	else
5046 		ioc->device_missing_delay = device_missing_delay &
5047 		    MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
5048 
5049 	ioc->sas_hba.parent_dev = &ioc->shost->shost_gendev;
5050 	for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
5051 		if ((mpt3sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
5052 		    i))) {
5053 			pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5054 			    ioc->name, __FILE__, __LINE__, __func__);
5055 			goto out;
5056 		}
5057 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5058 		    MPI2_IOCSTATUS_MASK;
5059 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5060 			pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5061 			    ioc->name, __FILE__, __LINE__, __func__);
5062 			goto out;
5063 		}
5064 
5065 		if (i == 0)
5066 			ioc->sas_hba.handle = le16_to_cpu(sas_iounit_pg0->
5067 			    PhyData[0].ControllerDevHandle);
5068 		ioc->sas_hba.phy[i].handle = ioc->sas_hba.handle;
5069 		ioc->sas_hba.phy[i].phy_id = i;
5070 		mpt3sas_transport_add_host_phy(ioc, &ioc->sas_hba.phy[i],
5071 		    phy_pg0, ioc->sas_hba.parent_dev);
5072 	}
5073 	if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
5074 	    MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, ioc->sas_hba.handle))) {
5075 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5076 		    ioc->name, __FILE__, __LINE__, __func__);
5077 		goto out;
5078 	}
5079 	ioc->sas_hba.enclosure_handle =
5080 	    le16_to_cpu(sas_device_pg0.EnclosureHandle);
5081 	ioc->sas_hba.sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5082 	pr_info(MPT3SAS_FMT
5083 		"host_add: handle(0x%04x), sas_addr(0x%016llx), phys(%d)\n",
5084 		ioc->name, ioc->sas_hba.handle,
5085 	    (unsigned long long) ioc->sas_hba.sas_address,
5086 	    ioc->sas_hba.num_phys) ;
5087 
5088 	if (ioc->sas_hba.enclosure_handle) {
5089 		if (!(mpt3sas_config_get_enclosure_pg0(ioc, &mpi_reply,
5090 		    &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5091 		   ioc->sas_hba.enclosure_handle)))
5092 			ioc->sas_hba.enclosure_logical_id =
5093 			    le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5094 	}
5095 
5096  out:
5097 	kfree(sas_iounit_pg1);
5098 	kfree(sas_iounit_pg0);
5099 }
5100 
5101 /**
5102  * _scsih_expander_add -  creating expander object
5103  * @ioc: per adapter object
5104  * @handle: expander handle
5105  *
5106  * Creating expander object, stored in ioc->sas_expander_list.
5107  *
5108  * Return 0 for success, else error.
5109  */
5110 static int
5111 _scsih_expander_add(struct MPT3SAS_ADAPTER *ioc, u16 handle)
5112 {
5113 	struct _sas_node *sas_expander;
5114 	Mpi2ConfigReply_t mpi_reply;
5115 	Mpi2ExpanderPage0_t expander_pg0;
5116 	Mpi2ExpanderPage1_t expander_pg1;
5117 	Mpi2SasEnclosurePage0_t enclosure_pg0;
5118 	u32 ioc_status;
5119 	u16 parent_handle;
5120 	u64 sas_address, sas_address_parent = 0;
5121 	int i;
5122 	unsigned long flags;
5123 	struct _sas_port *mpt3sas_port = NULL;
5124 
5125 	int rc = 0;
5126 
5127 	if (!handle)
5128 		return -1;
5129 
5130 	if (ioc->shost_recovery || ioc->pci_error_recovery)
5131 		return -1;
5132 
5133 	if ((mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
5134 	    MPI2_SAS_EXPAND_PGAD_FORM_HNDL, handle))) {
5135 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5136 		    ioc->name, __FILE__, __LINE__, __func__);
5137 		return -1;
5138 	}
5139 
5140 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5141 	    MPI2_IOCSTATUS_MASK;
5142 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5143 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5144 		    ioc->name, __FILE__, __LINE__, __func__);
5145 		return -1;
5146 	}
5147 
5148 	/* handle out of order topology events */
5149 	parent_handle = le16_to_cpu(expander_pg0.ParentDevHandle);
5150 	if (_scsih_get_sas_address(ioc, parent_handle, &sas_address_parent)
5151 	    != 0) {
5152 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5153 		    ioc->name, __FILE__, __LINE__, __func__);
5154 		return -1;
5155 	}
5156 	if (sas_address_parent != ioc->sas_hba.sas_address) {
5157 		spin_lock_irqsave(&ioc->sas_node_lock, flags);
5158 		sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5159 		    sas_address_parent);
5160 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5161 		if (!sas_expander) {
5162 			rc = _scsih_expander_add(ioc, parent_handle);
5163 			if (rc != 0)
5164 				return rc;
5165 		}
5166 	}
5167 
5168 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
5169 	sas_address = le64_to_cpu(expander_pg0.SASAddress);
5170 	sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5171 	    sas_address);
5172 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5173 
5174 	if (sas_expander)
5175 		return 0;
5176 
5177 	sas_expander = kzalloc(sizeof(struct _sas_node),
5178 	    GFP_KERNEL);
5179 	if (!sas_expander) {
5180 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5181 		    ioc->name, __FILE__, __LINE__, __func__);
5182 		return -1;
5183 	}
5184 
5185 	sas_expander->handle = handle;
5186 	sas_expander->num_phys = expander_pg0.NumPhys;
5187 	sas_expander->sas_address_parent = sas_address_parent;
5188 	sas_expander->sas_address = sas_address;
5189 
5190 	pr_info(MPT3SAS_FMT "expander_add: handle(0x%04x)," \
5191 	    " parent(0x%04x), sas_addr(0x%016llx), phys(%d)\n", ioc->name,
5192 	    handle, parent_handle, (unsigned long long)
5193 	    sas_expander->sas_address, sas_expander->num_phys);
5194 
5195 	if (!sas_expander->num_phys)
5196 		goto out_fail;
5197 	sas_expander->phy = kcalloc(sas_expander->num_phys,
5198 	    sizeof(struct _sas_phy), GFP_KERNEL);
5199 	if (!sas_expander->phy) {
5200 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5201 		    ioc->name, __FILE__, __LINE__, __func__);
5202 		rc = -1;
5203 		goto out_fail;
5204 	}
5205 
5206 	INIT_LIST_HEAD(&sas_expander->sas_port_list);
5207 	mpt3sas_port = mpt3sas_transport_port_add(ioc, handle,
5208 	    sas_address_parent);
5209 	if (!mpt3sas_port) {
5210 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5211 		    ioc->name, __FILE__, __LINE__, __func__);
5212 		rc = -1;
5213 		goto out_fail;
5214 	}
5215 	sas_expander->parent_dev = &mpt3sas_port->rphy->dev;
5216 
5217 	for (i = 0 ; i < sas_expander->num_phys ; i++) {
5218 		if ((mpt3sas_config_get_expander_pg1(ioc, &mpi_reply,
5219 		    &expander_pg1, i, handle))) {
5220 			pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5221 			    ioc->name, __FILE__, __LINE__, __func__);
5222 			rc = -1;
5223 			goto out_fail;
5224 		}
5225 		sas_expander->phy[i].handle = handle;
5226 		sas_expander->phy[i].phy_id = i;
5227 
5228 		if ((mpt3sas_transport_add_expander_phy(ioc,
5229 		    &sas_expander->phy[i], expander_pg1,
5230 		    sas_expander->parent_dev))) {
5231 			pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5232 			    ioc->name, __FILE__, __LINE__, __func__);
5233 			rc = -1;
5234 			goto out_fail;
5235 		}
5236 	}
5237 
5238 	if (sas_expander->enclosure_handle) {
5239 		if (!(mpt3sas_config_get_enclosure_pg0(ioc, &mpi_reply,
5240 		    &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5241 		   sas_expander->enclosure_handle)))
5242 			sas_expander->enclosure_logical_id =
5243 			    le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5244 	}
5245 
5246 	_scsih_expander_node_add(ioc, sas_expander);
5247 	 return 0;
5248 
5249  out_fail:
5250 
5251 	if (mpt3sas_port)
5252 		mpt3sas_transport_port_remove(ioc, sas_expander->sas_address,
5253 		    sas_address_parent);
5254 	kfree(sas_expander);
5255 	return rc;
5256 }
5257 
5258 /**
5259  * mpt3sas_expander_remove - removing expander object
5260  * @ioc: per adapter object
5261  * @sas_address: expander sas_address
5262  *
5263  * Return nothing.
5264  */
5265 void
5266 mpt3sas_expander_remove(struct MPT3SAS_ADAPTER *ioc, u64 sas_address)
5267 {
5268 	struct _sas_node *sas_expander;
5269 	unsigned long flags;
5270 
5271 	if (ioc->shost_recovery)
5272 		return;
5273 
5274 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
5275 	sas_expander = mpt3sas_scsih_expander_find_by_sas_address(ioc,
5276 	    sas_address);
5277 	if (sas_expander)
5278 		list_del(&sas_expander->list);
5279 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5280 	if (sas_expander)
5281 		_scsih_expander_node_remove(ioc, sas_expander);
5282 }
5283 
5284 /**
5285  * _scsih_done -  internal SCSI_IO callback handler.
5286  * @ioc: per adapter object
5287  * @smid: system request message index
5288  * @msix_index: MSIX table index supplied by the OS
5289  * @reply: reply message frame(lower 32bit addr)
5290  *
5291  * Callback handler when sending internal generated SCSI_IO.
5292  * The callback index passed is `ioc->scsih_cb_idx`
5293  *
5294  * Return 1 meaning mf should be freed from _base_interrupt
5295  *        0 means the mf is freed from this function.
5296  */
5297 static u8
5298 _scsih_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
5299 {
5300 	MPI2DefaultReply_t *mpi_reply;
5301 
5302 	mpi_reply =  mpt3sas_base_get_reply_virt_addr(ioc, reply);
5303 	if (ioc->scsih_cmds.status == MPT3_CMD_NOT_USED)
5304 		return 1;
5305 	if (ioc->scsih_cmds.smid != smid)
5306 		return 1;
5307 	ioc->scsih_cmds.status |= MPT3_CMD_COMPLETE;
5308 	if (mpi_reply) {
5309 		memcpy(ioc->scsih_cmds.reply, mpi_reply,
5310 		    mpi_reply->MsgLength*4);
5311 		ioc->scsih_cmds.status |= MPT3_CMD_REPLY_VALID;
5312 	}
5313 	ioc->scsih_cmds.status &= ~MPT3_CMD_PENDING;
5314 	complete(&ioc->scsih_cmds.done);
5315 	return 1;
5316 }
5317 
5318 
5319 
5320 
5321 #define MPT3_MAX_LUNS (255)
5322 
5323 
5324 /**
5325  * _scsih_check_access_status - check access flags
5326  * @ioc: per adapter object
5327  * @sas_address: sas address
5328  * @handle: sas device handle
5329  * @access_flags: errors returned during discovery of the device
5330  *
5331  * Return 0 for success, else failure
5332  */
5333 static u8
5334 _scsih_check_access_status(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
5335 	u16 handle, u8 access_status)
5336 {
5337 	u8 rc = 1;
5338 	char *desc = NULL;
5339 
5340 	switch (access_status) {
5341 	case MPI2_SAS_DEVICE0_ASTATUS_NO_ERRORS:
5342 	case MPI2_SAS_DEVICE0_ASTATUS_SATA_NEEDS_INITIALIZATION:
5343 		rc = 0;
5344 		break;
5345 	case MPI2_SAS_DEVICE0_ASTATUS_SATA_CAPABILITY_FAILED:
5346 		desc = "sata capability failed";
5347 		break;
5348 	case MPI2_SAS_DEVICE0_ASTATUS_SATA_AFFILIATION_CONFLICT:
5349 		desc = "sata affiliation conflict";
5350 		break;
5351 	case MPI2_SAS_DEVICE0_ASTATUS_ROUTE_NOT_ADDRESSABLE:
5352 		desc = "route not addressable";
5353 		break;
5354 	case MPI2_SAS_DEVICE0_ASTATUS_SMP_ERROR_NOT_ADDRESSABLE:
5355 		desc = "smp error not addressable";
5356 		break;
5357 	case MPI2_SAS_DEVICE0_ASTATUS_DEVICE_BLOCKED:
5358 		desc = "device blocked";
5359 		break;
5360 	case MPI2_SAS_DEVICE0_ASTATUS_SATA_INIT_FAILED:
5361 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_UNKNOWN:
5362 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_AFFILIATION_CONFLICT:
5363 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_DIAG:
5364 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_IDENTIFICATION:
5365 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_CHECK_POWER:
5366 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_PIO_SN:
5367 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_MDMA_SN:
5368 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_UDMA_SN:
5369 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_ZONING_VIOLATION:
5370 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_NOT_ADDRESSABLE:
5371 	case MPI2_SAS_DEVICE0_ASTATUS_SIF_MAX:
5372 		desc = "sata initialization failed";
5373 		break;
5374 	default:
5375 		desc = "unknown";
5376 		break;
5377 	}
5378 
5379 	if (!rc)
5380 		return 0;
5381 
5382 	pr_err(MPT3SAS_FMT
5383 		"discovery errors(%s): sas_address(0x%016llx), handle(0x%04x)\n",
5384 		ioc->name, desc, (unsigned long long)sas_address, handle);
5385 	return rc;
5386 }
5387 
5388 /**
5389  * _scsih_check_device - checking device responsiveness
5390  * @ioc: per adapter object
5391  * @parent_sas_address: sas address of parent expander or sas host
5392  * @handle: attached device handle
5393  * @phy_numberv: phy number
5394  * @link_rate: new link rate
5395  *
5396  * Returns nothing.
5397  */
5398 static void
5399 _scsih_check_device(struct MPT3SAS_ADAPTER *ioc,
5400 	u64 parent_sas_address, u16 handle, u8 phy_number, u8 link_rate)
5401 {
5402 	Mpi2ConfigReply_t mpi_reply;
5403 	Mpi2SasDevicePage0_t sas_device_pg0;
5404 	struct _sas_device *sas_device;
5405 	u32 ioc_status;
5406 	unsigned long flags;
5407 	u64 sas_address;
5408 	struct scsi_target *starget;
5409 	struct MPT3SAS_TARGET *sas_target_priv_data;
5410 	u32 device_info;
5411 
5412 
5413 	if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
5414 	    MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle)))
5415 		return;
5416 
5417 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
5418 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
5419 		return;
5420 
5421 	/* wide port handling ~ we need only handle device once for the phy that
5422 	 * is matched in sas device page zero
5423 	 */
5424 	if (phy_number != sas_device_pg0.PhyNum)
5425 		return;
5426 
5427 	/* check if this is end device */
5428 	device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
5429 	if (!(_scsih_is_end_device(device_info)))
5430 		return;
5431 
5432 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
5433 	sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5434 	sas_device = __mpt3sas_get_sdev_by_addr(ioc,
5435 	    sas_address);
5436 
5437 	if (!sas_device)
5438 		goto out_unlock;
5439 
5440 	if (unlikely(sas_device->handle != handle)) {
5441 		starget = sas_device->starget;
5442 		sas_target_priv_data = starget->hostdata;
5443 		starget_printk(KERN_INFO, starget,
5444 			"handle changed from(0x%04x) to (0x%04x)!!!\n",
5445 			sas_device->handle, handle);
5446 		sas_target_priv_data->handle = handle;
5447 		sas_device->handle = handle;
5448 		if (le16_to_cpu(sas_device_pg0.Flags) &
5449 		     MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
5450 			sas_device->enclosure_level =
5451 				sas_device_pg0.EnclosureLevel;
5452 			memcpy(sas_device->connector_name,
5453 				sas_device_pg0.ConnectorName, 4);
5454 			sas_device->connector_name[4] = '\0';
5455 		} else {
5456 			sas_device->enclosure_level = 0;
5457 			sas_device->connector_name[0] = '\0';
5458 		}
5459 	}
5460 
5461 	/* check if device is present */
5462 	if (!(le16_to_cpu(sas_device_pg0.Flags) &
5463 	    MPI2_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)) {
5464 		pr_err(MPT3SAS_FMT
5465 			"device is not present handle(0x%04x), flags!!!\n",
5466 			ioc->name, handle);
5467 		goto out_unlock;
5468 	}
5469 
5470 	/* check if there were any issues with discovery */
5471 	if (_scsih_check_access_status(ioc, sas_address, handle,
5472 	    sas_device_pg0.AccessStatus))
5473 		goto out_unlock;
5474 
5475 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
5476 	_scsih_ublock_io_device(ioc, sas_address);
5477 
5478 	if (sas_device)
5479 		sas_device_put(sas_device);
5480 	return;
5481 
5482 out_unlock:
5483 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
5484 	if (sas_device)
5485 		sas_device_put(sas_device);
5486 }
5487 
5488 /**
5489  * _scsih_add_device -  creating sas device object
5490  * @ioc: per adapter object
5491  * @handle: sas device handle
5492  * @phy_num: phy number end device attached to
5493  * @is_pd: is this hidden raid component
5494  *
5495  * Creating end device object, stored in ioc->sas_device_list.
5496  *
5497  * Returns 0 for success, non-zero for failure.
5498  */
5499 static int
5500 _scsih_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle, u8 phy_num,
5501 	u8 is_pd)
5502 {
5503 	Mpi2ConfigReply_t mpi_reply;
5504 	Mpi2SasDevicePage0_t sas_device_pg0;
5505 	Mpi2SasEnclosurePage0_t enclosure_pg0;
5506 	struct _sas_device *sas_device;
5507 	u32 ioc_status;
5508 	u64 sas_address;
5509 	u32 device_info;
5510 
5511 	if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
5512 	    MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
5513 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5514 		    ioc->name, __FILE__, __LINE__, __func__);
5515 		return -1;
5516 	}
5517 
5518 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
5519 	    MPI2_IOCSTATUS_MASK;
5520 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
5521 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5522 		    ioc->name, __FILE__, __LINE__, __func__);
5523 		return -1;
5524 	}
5525 
5526 	/* check if this is end device */
5527 	device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
5528 	if (!(_scsih_is_end_device(device_info)))
5529 		return -1;
5530 	set_bit(handle, ioc->pend_os_device_add);
5531 	sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
5532 
5533 	/* check if device is present */
5534 	if (!(le16_to_cpu(sas_device_pg0.Flags) &
5535 	    MPI2_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)) {
5536 		pr_err(MPT3SAS_FMT "device is not present handle(0x04%x)!!!\n",
5537 			ioc->name, handle);
5538 		return -1;
5539 	}
5540 
5541 	/* check if there were any issues with discovery */
5542 	if (_scsih_check_access_status(ioc, sas_address, handle,
5543 	    sas_device_pg0.AccessStatus))
5544 		return -1;
5545 
5546 	sas_device = mpt3sas_get_sdev_by_addr(ioc,
5547 					sas_address);
5548 	if (sas_device) {
5549 		clear_bit(handle, ioc->pend_os_device_add);
5550 		sas_device_put(sas_device);
5551 		return -1;
5552 	}
5553 
5554 	sas_device = kzalloc(sizeof(struct _sas_device),
5555 	    GFP_KERNEL);
5556 	if (!sas_device) {
5557 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5558 		    ioc->name, __FILE__, __LINE__, __func__);
5559 		return 0;
5560 	}
5561 
5562 	kref_init(&sas_device->refcount);
5563 	sas_device->handle = handle;
5564 	if (_scsih_get_sas_address(ioc,
5565 	    le16_to_cpu(sas_device_pg0.ParentDevHandle),
5566 	    &sas_device->sas_address_parent) != 0)
5567 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
5568 		    ioc->name, __FILE__, __LINE__, __func__);
5569 	sas_device->enclosure_handle =
5570 	    le16_to_cpu(sas_device_pg0.EnclosureHandle);
5571 	if (sas_device->enclosure_handle != 0)
5572 		sas_device->slot =
5573 		    le16_to_cpu(sas_device_pg0.Slot);
5574 	sas_device->device_info = device_info;
5575 	sas_device->sas_address = sas_address;
5576 	sas_device->phy = sas_device_pg0.PhyNum;
5577 	sas_device->fast_path = (le16_to_cpu(sas_device_pg0.Flags) &
5578 	    MPI25_SAS_DEVICE0_FLAGS_FAST_PATH_CAPABLE) ? 1 : 0;
5579 
5580 	if (le16_to_cpu(sas_device_pg0.Flags)
5581 		& MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
5582 		sas_device->enclosure_level =
5583 			sas_device_pg0.EnclosureLevel;
5584 		memcpy(sas_device->connector_name,
5585 			sas_device_pg0.ConnectorName, 4);
5586 		sas_device->connector_name[4] = '\0';
5587 	} else {
5588 		sas_device->enclosure_level = 0;
5589 		sas_device->connector_name[0] = '\0';
5590 	}
5591 	/* get enclosure_logical_id */
5592 	if (sas_device->enclosure_handle && !(mpt3sas_config_get_enclosure_pg0(
5593 	   ioc, &mpi_reply, &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
5594 	   sas_device->enclosure_handle)))
5595 		sas_device->enclosure_logical_id =
5596 		    le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
5597 
5598 	/* get device name */
5599 	sas_device->device_name = le64_to_cpu(sas_device_pg0.DeviceName);
5600 
5601 	if (ioc->wait_for_discovery_to_complete)
5602 		_scsih_sas_device_init_add(ioc, sas_device);
5603 	else
5604 		_scsih_sas_device_add(ioc, sas_device);
5605 
5606 	sas_device_put(sas_device);
5607 	return 0;
5608 }
5609 
5610 /**
5611  * _scsih_remove_device -  removing sas device object
5612  * @ioc: per adapter object
5613  * @sas_device_delete: the sas_device object
5614  *
5615  * Return nothing.
5616  */
5617 static void
5618 _scsih_remove_device(struct MPT3SAS_ADAPTER *ioc,
5619 	struct _sas_device *sas_device)
5620 {
5621 	struct MPT3SAS_TARGET *sas_target_priv_data;
5622 
5623 	if ((ioc->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM) &&
5624 	     (sas_device->pfa_led_on)) {
5625 		_scsih_turn_off_pfa_led(ioc, sas_device);
5626 		sas_device->pfa_led_on = 0;
5627 	}
5628 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
5629 		"%s: enter: handle(0x%04x), sas_addr(0x%016llx)\n",
5630 		ioc->name, __func__,
5631 	    sas_device->handle, (unsigned long long)
5632 	    sas_device->sas_address));
5633 	if (sas_device->enclosure_handle != 0)
5634 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
5635 		    "%s: enter: enclosure logical id(0x%016llx), slot(%d)\n",
5636 		    ioc->name, __func__,
5637 		    (unsigned long long)sas_device->enclosure_logical_id,
5638 		    sas_device->slot));
5639 	if (sas_device->connector_name[0] != '\0')
5640 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
5641 		  "%s: enter: enclosure level(0x%04x), connector name( %s)\n",
5642 		  ioc->name, __func__,
5643 		  sas_device->enclosure_level,
5644 		  sas_device->connector_name));
5645 
5646 	if (sas_device->starget && sas_device->starget->hostdata) {
5647 		sas_target_priv_data = sas_device->starget->hostdata;
5648 		sas_target_priv_data->deleted = 1;
5649 		_scsih_ublock_io_device(ioc, sas_device->sas_address);
5650 		sas_target_priv_data->handle =
5651 		     MPT3SAS_INVALID_DEVICE_HANDLE;
5652 	}
5653 
5654 	if (!ioc->hide_drives)
5655 		mpt3sas_transport_port_remove(ioc,
5656 		    sas_device->sas_address,
5657 		    sas_device->sas_address_parent);
5658 
5659 	pr_info(MPT3SAS_FMT
5660 		"removing handle(0x%04x), sas_addr(0x%016llx)\n",
5661 		ioc->name, sas_device->handle,
5662 	    (unsigned long long) sas_device->sas_address);
5663 	if (sas_device->enclosure_handle != 0)
5664 		pr_info(MPT3SAS_FMT
5665 		  "removing : enclosure logical id(0x%016llx), slot(%d)\n",
5666 		  ioc->name,
5667 		  (unsigned long long)sas_device->enclosure_logical_id,
5668 		  sas_device->slot);
5669 	if (sas_device->connector_name[0] != '\0')
5670 		pr_info(MPT3SAS_FMT
5671 		  "removing enclosure level(0x%04x), connector name( %s)\n",
5672 		  ioc->name, sas_device->enclosure_level,
5673 		  sas_device->connector_name);
5674 
5675 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
5676 		"%s: exit: handle(0x%04x), sas_addr(0x%016llx)\n",
5677 		ioc->name, __func__,
5678 		sas_device->handle, (unsigned long long)
5679 		sas_device->sas_address));
5680 	if (sas_device->enclosure_handle != 0)
5681 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
5682 		    "%s: exit: enclosure logical id(0x%016llx), slot(%d)\n",
5683 		    ioc->name, __func__,
5684 		    (unsigned long long)sas_device->enclosure_logical_id,
5685 		    sas_device->slot));
5686 	if (sas_device->connector_name[0] != '\0')
5687 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
5688 		    "%s: exit: enclosure level(0x%04x), connector name(%s)\n",
5689 		    ioc->name, __func__, sas_device->enclosure_level,
5690 		    sas_device->connector_name));
5691 }
5692 
5693 /**
5694  * _scsih_sas_topology_change_event_debug - debug for topology event
5695  * @ioc: per adapter object
5696  * @event_data: event data payload
5697  * Context: user.
5698  */
5699 static void
5700 _scsih_sas_topology_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
5701 	Mpi2EventDataSasTopologyChangeList_t *event_data)
5702 {
5703 	int i;
5704 	u16 handle;
5705 	u16 reason_code;
5706 	u8 phy_number;
5707 	char *status_str = NULL;
5708 	u8 link_rate, prev_link_rate;
5709 
5710 	switch (event_data->ExpStatus) {
5711 	case MPI2_EVENT_SAS_TOPO_ES_ADDED:
5712 		status_str = "add";
5713 		break;
5714 	case MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING:
5715 		status_str = "remove";
5716 		break;
5717 	case MPI2_EVENT_SAS_TOPO_ES_RESPONDING:
5718 	case 0:
5719 		status_str =  "responding";
5720 		break;
5721 	case MPI2_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING:
5722 		status_str = "remove delay";
5723 		break;
5724 	default:
5725 		status_str = "unknown status";
5726 		break;
5727 	}
5728 	pr_info(MPT3SAS_FMT "sas topology change: (%s)\n",
5729 	    ioc->name, status_str);
5730 	pr_info("\thandle(0x%04x), enclosure_handle(0x%04x) " \
5731 	    "start_phy(%02d), count(%d)\n",
5732 	    le16_to_cpu(event_data->ExpanderDevHandle),
5733 	    le16_to_cpu(event_data->EnclosureHandle),
5734 	    event_data->StartPhyNum, event_data->NumEntries);
5735 	for (i = 0; i < event_data->NumEntries; i++) {
5736 		handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
5737 		if (!handle)
5738 			continue;
5739 		phy_number = event_data->StartPhyNum + i;
5740 		reason_code = event_data->PHY[i].PhyStatus &
5741 		    MPI2_EVENT_SAS_TOPO_RC_MASK;
5742 		switch (reason_code) {
5743 		case MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED:
5744 			status_str = "target add";
5745 			break;
5746 		case MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING:
5747 			status_str = "target remove";
5748 			break;
5749 		case MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING:
5750 			status_str = "delay target remove";
5751 			break;
5752 		case MPI2_EVENT_SAS_TOPO_RC_PHY_CHANGED:
5753 			status_str = "link rate change";
5754 			break;
5755 		case MPI2_EVENT_SAS_TOPO_RC_NO_CHANGE:
5756 			status_str = "target responding";
5757 			break;
5758 		default:
5759 			status_str = "unknown";
5760 			break;
5761 		}
5762 		link_rate = event_data->PHY[i].LinkRate >> 4;
5763 		prev_link_rate = event_data->PHY[i].LinkRate & 0xF;
5764 		pr_info("\tphy(%02d), attached_handle(0x%04x): %s:" \
5765 		    " link rate: new(0x%02x), old(0x%02x)\n", phy_number,
5766 		    handle, status_str, link_rate, prev_link_rate);
5767 
5768 	}
5769 }
5770 
5771 /**
5772  * _scsih_sas_topology_change_event - handle topology changes
5773  * @ioc: per adapter object
5774  * @fw_event: The fw_event_work object
5775  * Context: user.
5776  *
5777  */
5778 static int
5779 _scsih_sas_topology_change_event(struct MPT3SAS_ADAPTER *ioc,
5780 	struct fw_event_work *fw_event)
5781 {
5782 	int i;
5783 	u16 parent_handle, handle;
5784 	u16 reason_code;
5785 	u8 phy_number, max_phys;
5786 	struct _sas_node *sas_expander;
5787 	u64 sas_address;
5788 	unsigned long flags;
5789 	u8 link_rate, prev_link_rate;
5790 	Mpi2EventDataSasTopologyChangeList_t *event_data =
5791 		(Mpi2EventDataSasTopologyChangeList_t *)
5792 		fw_event->event_data;
5793 
5794 	if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
5795 		_scsih_sas_topology_change_event_debug(ioc, event_data);
5796 
5797 	if (ioc->shost_recovery || ioc->remove_host || ioc->pci_error_recovery)
5798 		return 0;
5799 
5800 	if (!ioc->sas_hba.num_phys)
5801 		_scsih_sas_host_add(ioc);
5802 	else
5803 		_scsih_sas_host_refresh(ioc);
5804 
5805 	if (fw_event->ignore) {
5806 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
5807 			"ignoring expander event\n", ioc->name));
5808 		return 0;
5809 	}
5810 
5811 	parent_handle = le16_to_cpu(event_data->ExpanderDevHandle);
5812 
5813 	/* handle expander add */
5814 	if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_ADDED)
5815 		if (_scsih_expander_add(ioc, parent_handle) != 0)
5816 			return 0;
5817 
5818 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
5819 	sas_expander = mpt3sas_scsih_expander_find_by_handle(ioc,
5820 	    parent_handle);
5821 	if (sas_expander) {
5822 		sas_address = sas_expander->sas_address;
5823 		max_phys = sas_expander->num_phys;
5824 	} else if (parent_handle < ioc->sas_hba.num_phys) {
5825 		sas_address = ioc->sas_hba.sas_address;
5826 		max_phys = ioc->sas_hba.num_phys;
5827 	} else {
5828 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5829 		return 0;
5830 	}
5831 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
5832 
5833 	/* handle siblings events */
5834 	for (i = 0; i < event_data->NumEntries; i++) {
5835 		if (fw_event->ignore) {
5836 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
5837 				"ignoring expander event\n", ioc->name));
5838 			return 0;
5839 		}
5840 		if (ioc->remove_host || ioc->pci_error_recovery)
5841 			return 0;
5842 		phy_number = event_data->StartPhyNum + i;
5843 		if (phy_number >= max_phys)
5844 			continue;
5845 		reason_code = event_data->PHY[i].PhyStatus &
5846 		    MPI2_EVENT_SAS_TOPO_RC_MASK;
5847 		if ((event_data->PHY[i].PhyStatus &
5848 		    MPI2_EVENT_SAS_TOPO_PHYSTATUS_VACANT) && (reason_code !=
5849 		    MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING))
5850 				continue;
5851 		handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
5852 		if (!handle)
5853 			continue;
5854 		link_rate = event_data->PHY[i].LinkRate >> 4;
5855 		prev_link_rate = event_data->PHY[i].LinkRate & 0xF;
5856 		switch (reason_code) {
5857 		case MPI2_EVENT_SAS_TOPO_RC_PHY_CHANGED:
5858 
5859 			if (ioc->shost_recovery)
5860 				break;
5861 
5862 			if (link_rate == prev_link_rate)
5863 				break;
5864 
5865 			mpt3sas_transport_update_links(ioc, sas_address,
5866 			    handle, phy_number, link_rate);
5867 
5868 			if (link_rate < MPI2_SAS_NEG_LINK_RATE_1_5)
5869 				break;
5870 
5871 			_scsih_check_device(ioc, sas_address, handle,
5872 			    phy_number, link_rate);
5873 
5874 			if (!test_bit(handle, ioc->pend_os_device_add))
5875 				break;
5876 
5877 
5878 		case MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED:
5879 
5880 			if (ioc->shost_recovery)
5881 				break;
5882 
5883 			mpt3sas_transport_update_links(ioc, sas_address,
5884 			    handle, phy_number, link_rate);
5885 
5886 			_scsih_add_device(ioc, handle, phy_number, 0);
5887 
5888 			break;
5889 		case MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING:
5890 
5891 			_scsih_device_remove_by_handle(ioc, handle);
5892 			break;
5893 		}
5894 	}
5895 
5896 	/* handle expander removal */
5897 	if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING &&
5898 	    sas_expander)
5899 		mpt3sas_expander_remove(ioc, sas_address);
5900 
5901 	return 0;
5902 }
5903 
5904 /**
5905  * _scsih_sas_device_status_change_event_debug - debug for device event
5906  * @event_data: event data payload
5907  * Context: user.
5908  *
5909  * Return nothing.
5910  */
5911 static void
5912 _scsih_sas_device_status_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
5913 	Mpi2EventDataSasDeviceStatusChange_t *event_data)
5914 {
5915 	char *reason_str = NULL;
5916 
5917 	switch (event_data->ReasonCode) {
5918 	case MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA:
5919 		reason_str = "smart data";
5920 		break;
5921 	case MPI2_EVENT_SAS_DEV_STAT_RC_UNSUPPORTED:
5922 		reason_str = "unsupported device discovered";
5923 		break;
5924 	case MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET:
5925 		reason_str = "internal device reset";
5926 		break;
5927 	case MPI2_EVENT_SAS_DEV_STAT_RC_TASK_ABORT_INTERNAL:
5928 		reason_str = "internal task abort";
5929 		break;
5930 	case MPI2_EVENT_SAS_DEV_STAT_RC_ABORT_TASK_SET_INTERNAL:
5931 		reason_str = "internal task abort set";
5932 		break;
5933 	case MPI2_EVENT_SAS_DEV_STAT_RC_CLEAR_TASK_SET_INTERNAL:
5934 		reason_str = "internal clear task set";
5935 		break;
5936 	case MPI2_EVENT_SAS_DEV_STAT_RC_QUERY_TASK_INTERNAL:
5937 		reason_str = "internal query task";
5938 		break;
5939 	case MPI2_EVENT_SAS_DEV_STAT_RC_SATA_INIT_FAILURE:
5940 		reason_str = "sata init failure";
5941 		break;
5942 	case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_INTERNAL_DEV_RESET:
5943 		reason_str = "internal device reset complete";
5944 		break;
5945 	case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_TASK_ABORT_INTERNAL:
5946 		reason_str = "internal task abort complete";
5947 		break;
5948 	case MPI2_EVENT_SAS_DEV_STAT_RC_ASYNC_NOTIFICATION:
5949 		reason_str = "internal async notification";
5950 		break;
5951 	case MPI2_EVENT_SAS_DEV_STAT_RC_EXPANDER_REDUCED_FUNCTIONALITY:
5952 		reason_str = "expander reduced functionality";
5953 		break;
5954 	case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_EXPANDER_REDUCED_FUNCTIONALITY:
5955 		reason_str = "expander reduced functionality complete";
5956 		break;
5957 	default:
5958 		reason_str = "unknown reason";
5959 		break;
5960 	}
5961 	pr_info(MPT3SAS_FMT "device status change: (%s)\n"
5962 	    "\thandle(0x%04x), sas address(0x%016llx), tag(%d)",
5963 	    ioc->name, reason_str, le16_to_cpu(event_data->DevHandle),
5964 	    (unsigned long long)le64_to_cpu(event_data->SASAddress),
5965 	    le16_to_cpu(event_data->TaskTag));
5966 	if (event_data->ReasonCode == MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA)
5967 		pr_info(MPT3SAS_FMT ", ASC(0x%x), ASCQ(0x%x)\n", ioc->name,
5968 		    event_data->ASC, event_data->ASCQ);
5969 	pr_info("\n");
5970 }
5971 
5972 /**
5973  * _scsih_sas_device_status_change_event - handle device status change
5974  * @ioc: per adapter object
5975  * @fw_event: The fw_event_work object
5976  * Context: user.
5977  *
5978  * Return nothing.
5979  */
5980 static void
5981 _scsih_sas_device_status_change_event(struct MPT3SAS_ADAPTER *ioc,
5982 	struct fw_event_work *fw_event)
5983 {
5984 	struct MPT3SAS_TARGET *target_priv_data;
5985 	struct _sas_device *sas_device;
5986 	u64 sas_address;
5987 	unsigned long flags;
5988 	Mpi2EventDataSasDeviceStatusChange_t *event_data =
5989 		(Mpi2EventDataSasDeviceStatusChange_t *)
5990 		fw_event->event_data;
5991 
5992 	if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
5993 		_scsih_sas_device_status_change_event_debug(ioc,
5994 		     event_data);
5995 
5996 	/* In MPI Revision K (0xC), the internal device reset complete was
5997 	 * implemented, so avoid setting tm_busy flag for older firmware.
5998 	 */
5999 	if ((ioc->facts.HeaderVersion >> 8) < 0xC)
6000 		return;
6001 
6002 	if (event_data->ReasonCode !=
6003 	    MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET &&
6004 	   event_data->ReasonCode !=
6005 	    MPI2_EVENT_SAS_DEV_STAT_RC_CMP_INTERNAL_DEV_RESET)
6006 		return;
6007 
6008 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
6009 	sas_address = le64_to_cpu(event_data->SASAddress);
6010 	sas_device = __mpt3sas_get_sdev_by_addr(ioc,
6011 	    sas_address);
6012 
6013 	if (!sas_device || !sas_device->starget)
6014 		goto out;
6015 
6016 	target_priv_data = sas_device->starget->hostdata;
6017 	if (!target_priv_data)
6018 		goto out;
6019 
6020 	if (event_data->ReasonCode ==
6021 	    MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET)
6022 		target_priv_data->tm_busy = 1;
6023 	else
6024 		target_priv_data->tm_busy = 0;
6025 
6026 out:
6027 	if (sas_device)
6028 		sas_device_put(sas_device);
6029 
6030 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
6031 
6032 }
6033 
6034 /**
6035  * _scsih_sas_enclosure_dev_status_change_event_debug - debug for enclosure
6036  * event
6037  * @ioc: per adapter object
6038  * @event_data: event data payload
6039  * Context: user.
6040  *
6041  * Return nothing.
6042  */
6043 static void
6044 _scsih_sas_enclosure_dev_status_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
6045 	Mpi2EventDataSasEnclDevStatusChange_t *event_data)
6046 {
6047 	char *reason_str = NULL;
6048 
6049 	switch (event_data->ReasonCode) {
6050 	case MPI2_EVENT_SAS_ENCL_RC_ADDED:
6051 		reason_str = "enclosure add";
6052 		break;
6053 	case MPI2_EVENT_SAS_ENCL_RC_NOT_RESPONDING:
6054 		reason_str = "enclosure remove";
6055 		break;
6056 	default:
6057 		reason_str = "unknown reason";
6058 		break;
6059 	}
6060 
6061 	pr_info(MPT3SAS_FMT "enclosure status change: (%s)\n"
6062 	    "\thandle(0x%04x), enclosure logical id(0x%016llx)"
6063 	    " number slots(%d)\n", ioc->name, reason_str,
6064 	    le16_to_cpu(event_data->EnclosureHandle),
6065 	    (unsigned long long)le64_to_cpu(event_data->EnclosureLogicalID),
6066 	    le16_to_cpu(event_data->StartSlot));
6067 }
6068 
6069 /**
6070  * _scsih_sas_enclosure_dev_status_change_event - handle enclosure events
6071  * @ioc: per adapter object
6072  * @fw_event: The fw_event_work object
6073  * Context: user.
6074  *
6075  * Return nothing.
6076  */
6077 static void
6078 _scsih_sas_enclosure_dev_status_change_event(struct MPT3SAS_ADAPTER *ioc,
6079 	struct fw_event_work *fw_event)
6080 {
6081 	if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
6082 		_scsih_sas_enclosure_dev_status_change_event_debug(ioc,
6083 		     (Mpi2EventDataSasEnclDevStatusChange_t *)
6084 		     fw_event->event_data);
6085 }
6086 
6087 /**
6088  * _scsih_sas_broadcast_primitive_event - handle broadcast events
6089  * @ioc: per adapter object
6090  * @fw_event: The fw_event_work object
6091  * Context: user.
6092  *
6093  * Return nothing.
6094  */
6095 static void
6096 _scsih_sas_broadcast_primitive_event(struct MPT3SAS_ADAPTER *ioc,
6097 	struct fw_event_work *fw_event)
6098 {
6099 	struct scsi_cmnd *scmd;
6100 	struct scsi_device *sdev;
6101 	u16 smid, handle;
6102 	u32 lun;
6103 	struct MPT3SAS_DEVICE *sas_device_priv_data;
6104 	u32 termination_count;
6105 	u32 query_count;
6106 	Mpi2SCSITaskManagementReply_t *mpi_reply;
6107 	Mpi2EventDataSasBroadcastPrimitive_t *event_data =
6108 		(Mpi2EventDataSasBroadcastPrimitive_t *)
6109 		fw_event->event_data;
6110 	u16 ioc_status;
6111 	unsigned long flags;
6112 	int r;
6113 	u8 max_retries = 0;
6114 	u8 task_abort_retries;
6115 
6116 	mutex_lock(&ioc->tm_cmds.mutex);
6117 	pr_info(MPT3SAS_FMT
6118 		"%s: enter: phy number(%d), width(%d)\n",
6119 		ioc->name, __func__, event_data->PhyNum,
6120 	     event_data->PortWidth);
6121 
6122 	_scsih_block_io_all_device(ioc);
6123 
6124 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6125 	mpi_reply = ioc->tm_cmds.reply;
6126  broadcast_aen_retry:
6127 
6128 	/* sanity checks for retrying this loop */
6129 	if (max_retries++ == 5) {
6130 		dewtprintk(ioc, pr_info(MPT3SAS_FMT "%s: giving up\n",
6131 		    ioc->name, __func__));
6132 		goto out;
6133 	} else if (max_retries > 1)
6134 		dewtprintk(ioc, pr_info(MPT3SAS_FMT "%s: %d retry\n",
6135 		    ioc->name, __func__, max_retries - 1));
6136 
6137 	termination_count = 0;
6138 	query_count = 0;
6139 	for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
6140 		if (ioc->shost_recovery)
6141 			goto out;
6142 		scmd = _scsih_scsi_lookup_get(ioc, smid);
6143 		if (!scmd)
6144 			continue;
6145 		sdev = scmd->device;
6146 		sas_device_priv_data = sdev->hostdata;
6147 		if (!sas_device_priv_data || !sas_device_priv_data->sas_target)
6148 			continue;
6149 		 /* skip hidden raid components */
6150 		if (sas_device_priv_data->sas_target->flags &
6151 		    MPT_TARGET_FLAGS_RAID_COMPONENT)
6152 			continue;
6153 		 /* skip volumes */
6154 		if (sas_device_priv_data->sas_target->flags &
6155 		    MPT_TARGET_FLAGS_VOLUME)
6156 			continue;
6157 
6158 		handle = sas_device_priv_data->sas_target->handle;
6159 		lun = sas_device_priv_data->lun;
6160 		query_count++;
6161 
6162 		if (ioc->shost_recovery)
6163 			goto out;
6164 
6165 		spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
6166 		r = mpt3sas_scsih_issue_tm(ioc, handle, 0, 0, lun,
6167 		    MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK, smid, 30);
6168 		if (r == FAILED) {
6169 			sdev_printk(KERN_WARNING, sdev,
6170 			    "mpt3sas_scsih_issue_tm: FAILED when sending "
6171 			    "QUERY_TASK: scmd(%p)\n", scmd);
6172 			spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6173 			goto broadcast_aen_retry;
6174 		}
6175 		ioc_status = le16_to_cpu(mpi_reply->IOCStatus)
6176 		    & MPI2_IOCSTATUS_MASK;
6177 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6178 			sdev_printk(KERN_WARNING, sdev,
6179 				"query task: FAILED with IOCSTATUS(0x%04x), scmd(%p)\n",
6180 				ioc_status, scmd);
6181 			spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6182 			goto broadcast_aen_retry;
6183 		}
6184 
6185 		/* see if IO is still owned by IOC and target */
6186 		if (mpi_reply->ResponseCode ==
6187 		     MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED ||
6188 		     mpi_reply->ResponseCode ==
6189 		     MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC) {
6190 			spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6191 			continue;
6192 		}
6193 		task_abort_retries = 0;
6194  tm_retry:
6195 		if (task_abort_retries++ == 60) {
6196 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
6197 			    "%s: ABORT_TASK: giving up\n", ioc->name,
6198 			    __func__));
6199 			spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6200 			goto broadcast_aen_retry;
6201 		}
6202 
6203 		if (ioc->shost_recovery)
6204 			goto out_no_lock;
6205 
6206 		r = mpt3sas_scsih_issue_tm(ioc, handle, sdev->channel, sdev->id,
6207 		    sdev->lun, MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, smid,
6208 		    30);
6209 		if (r == FAILED) {
6210 			sdev_printk(KERN_WARNING, sdev,
6211 			    "mpt3sas_scsih_issue_tm: ABORT_TASK: FAILED : "
6212 			    "scmd(%p)\n", scmd);
6213 			goto tm_retry;
6214 		}
6215 
6216 		if (task_abort_retries > 1)
6217 			sdev_printk(KERN_WARNING, sdev,
6218 			    "mpt3sas_scsih_issue_tm: ABORT_TASK: RETRIES (%d):"
6219 			    " scmd(%p)\n",
6220 			    task_abort_retries - 1, scmd);
6221 
6222 		termination_count += le32_to_cpu(mpi_reply->TerminationCount);
6223 		spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
6224 	}
6225 
6226 	if (ioc->broadcast_aen_pending) {
6227 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
6228 			"%s: loop back due to pending AEN\n",
6229 			ioc->name, __func__));
6230 		 ioc->broadcast_aen_pending = 0;
6231 		 goto broadcast_aen_retry;
6232 	}
6233 
6234  out:
6235 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
6236  out_no_lock:
6237 
6238 	dewtprintk(ioc, pr_info(MPT3SAS_FMT
6239 	    "%s - exit, query_count = %d termination_count = %d\n",
6240 	    ioc->name, __func__, query_count, termination_count));
6241 
6242 	ioc->broadcast_aen_busy = 0;
6243 	if (!ioc->shost_recovery)
6244 		_scsih_ublock_io_all_device(ioc);
6245 	mutex_unlock(&ioc->tm_cmds.mutex);
6246 }
6247 
6248 /**
6249  * _scsih_sas_discovery_event - handle discovery events
6250  * @ioc: per adapter object
6251  * @fw_event: The fw_event_work object
6252  * Context: user.
6253  *
6254  * Return nothing.
6255  */
6256 static void
6257 _scsih_sas_discovery_event(struct MPT3SAS_ADAPTER *ioc,
6258 	struct fw_event_work *fw_event)
6259 {
6260 	Mpi2EventDataSasDiscovery_t *event_data =
6261 		(Mpi2EventDataSasDiscovery_t *) fw_event->event_data;
6262 
6263 	if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) {
6264 		pr_info(MPT3SAS_FMT "discovery event: (%s)", ioc->name,
6265 		    (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED) ?
6266 		    "start" : "stop");
6267 		if (event_data->DiscoveryStatus)
6268 			pr_info("discovery_status(0x%08x)",
6269 			    le32_to_cpu(event_data->DiscoveryStatus));
6270 		pr_info("\n");
6271 	}
6272 
6273 	if (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED &&
6274 	    !ioc->sas_hba.num_phys) {
6275 		if (disable_discovery > 0 && ioc->shost_recovery) {
6276 			/* Wait for the reset to complete */
6277 			while (ioc->shost_recovery)
6278 				ssleep(1);
6279 		}
6280 		_scsih_sas_host_add(ioc);
6281 	}
6282 }
6283 
6284 /**
6285  * _scsih_ir_fastpath - turn on fastpath for IR physdisk
6286  * @ioc: per adapter object
6287  * @handle: device handle for physical disk
6288  * @phys_disk_num: physical disk number
6289  *
6290  * Return 0 for success, else failure.
6291  */
6292 static int
6293 _scsih_ir_fastpath(struct MPT3SAS_ADAPTER *ioc, u16 handle, u8 phys_disk_num)
6294 {
6295 	Mpi2RaidActionRequest_t *mpi_request;
6296 	Mpi2RaidActionReply_t *mpi_reply;
6297 	u16 smid;
6298 	u8 issue_reset = 0;
6299 	int rc = 0;
6300 	u16 ioc_status;
6301 	u32 log_info;
6302 
6303 	if (ioc->hba_mpi_version_belonged == MPI2_VERSION)
6304 		return rc;
6305 
6306 	mutex_lock(&ioc->scsih_cmds.mutex);
6307 
6308 	if (ioc->scsih_cmds.status != MPT3_CMD_NOT_USED) {
6309 		pr_err(MPT3SAS_FMT "%s: scsih_cmd in use\n",
6310 		    ioc->name, __func__);
6311 		rc = -EAGAIN;
6312 		goto out;
6313 	}
6314 	ioc->scsih_cmds.status = MPT3_CMD_PENDING;
6315 
6316 	smid = mpt3sas_base_get_smid(ioc, ioc->scsih_cb_idx);
6317 	if (!smid) {
6318 		pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
6319 		    ioc->name, __func__);
6320 		ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
6321 		rc = -EAGAIN;
6322 		goto out;
6323 	}
6324 
6325 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
6326 	ioc->scsih_cmds.smid = smid;
6327 	memset(mpi_request, 0, sizeof(Mpi2RaidActionRequest_t));
6328 
6329 	mpi_request->Function = MPI2_FUNCTION_RAID_ACTION;
6330 	mpi_request->Action = MPI2_RAID_ACTION_PHYSDISK_HIDDEN;
6331 	mpi_request->PhysDiskNum = phys_disk_num;
6332 
6333 	dewtprintk(ioc, pr_info(MPT3SAS_FMT "IR RAID_ACTION: turning fast "\
6334 	    "path on for handle(0x%04x), phys_disk_num (0x%02x)\n", ioc->name,
6335 	    handle, phys_disk_num));
6336 
6337 	init_completion(&ioc->scsih_cmds.done);
6338 	ioc->put_smid_default(ioc, smid);
6339 	wait_for_completion_timeout(&ioc->scsih_cmds.done, 10*HZ);
6340 
6341 	if (!(ioc->scsih_cmds.status & MPT3_CMD_COMPLETE)) {
6342 		pr_err(MPT3SAS_FMT "%s: timeout\n",
6343 		    ioc->name, __func__);
6344 		if (!(ioc->scsih_cmds.status & MPT3_CMD_RESET))
6345 			issue_reset = 1;
6346 		rc = -EFAULT;
6347 		goto out;
6348 	}
6349 
6350 	if (ioc->scsih_cmds.status & MPT3_CMD_REPLY_VALID) {
6351 
6352 		mpi_reply = ioc->scsih_cmds.reply;
6353 		ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
6354 		if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
6355 			log_info =  le32_to_cpu(mpi_reply->IOCLogInfo);
6356 		else
6357 			log_info = 0;
6358 		ioc_status &= MPI2_IOCSTATUS_MASK;
6359 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6360 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
6361 			    "IR RAID_ACTION: failed: ioc_status(0x%04x), "
6362 			    "loginfo(0x%08x)!!!\n", ioc->name, ioc_status,
6363 			    log_info));
6364 			rc = -EFAULT;
6365 		} else
6366 			dewtprintk(ioc, pr_info(MPT3SAS_FMT
6367 			    "IR RAID_ACTION: completed successfully\n",
6368 			    ioc->name));
6369 	}
6370 
6371  out:
6372 	ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
6373 	mutex_unlock(&ioc->scsih_cmds.mutex);
6374 
6375 	if (issue_reset)
6376 		mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
6377 	return rc;
6378 }
6379 
6380 /**
6381  * _scsih_reprobe_lun - reprobing lun
6382  * @sdev: scsi device struct
6383  * @no_uld_attach: sdev->no_uld_attach flag setting
6384  *
6385  **/
6386 static void
6387 _scsih_reprobe_lun(struct scsi_device *sdev, void *no_uld_attach)
6388 {
6389 	sdev->no_uld_attach = no_uld_attach ? 1 : 0;
6390 	sdev_printk(KERN_INFO, sdev, "%s raid component\n",
6391 	    sdev->no_uld_attach ? "hiding" : "exposing");
6392 	WARN_ON(scsi_device_reprobe(sdev));
6393 }
6394 
6395 /**
6396  * _scsih_sas_volume_add - add new volume
6397  * @ioc: per adapter object
6398  * @element: IR config element data
6399  * Context: user.
6400  *
6401  * Return nothing.
6402  */
6403 static void
6404 _scsih_sas_volume_add(struct MPT3SAS_ADAPTER *ioc,
6405 	Mpi2EventIrConfigElement_t *element)
6406 {
6407 	struct _raid_device *raid_device;
6408 	unsigned long flags;
6409 	u64 wwid;
6410 	u16 handle = le16_to_cpu(element->VolDevHandle);
6411 	int rc;
6412 
6413 	mpt3sas_config_get_volume_wwid(ioc, handle, &wwid);
6414 	if (!wwid) {
6415 		pr_err(MPT3SAS_FMT
6416 		    "failure at %s:%d/%s()!\n", ioc->name,
6417 		    __FILE__, __LINE__, __func__);
6418 		return;
6419 	}
6420 
6421 	spin_lock_irqsave(&ioc->raid_device_lock, flags);
6422 	raid_device = _scsih_raid_device_find_by_wwid(ioc, wwid);
6423 	spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6424 
6425 	if (raid_device)
6426 		return;
6427 
6428 	raid_device = kzalloc(sizeof(struct _raid_device), GFP_KERNEL);
6429 	if (!raid_device) {
6430 		pr_err(MPT3SAS_FMT
6431 		    "failure at %s:%d/%s()!\n", ioc->name,
6432 		    __FILE__, __LINE__, __func__);
6433 		return;
6434 	}
6435 
6436 	raid_device->id = ioc->sas_id++;
6437 	raid_device->channel = RAID_CHANNEL;
6438 	raid_device->handle = handle;
6439 	raid_device->wwid = wwid;
6440 	_scsih_raid_device_add(ioc, raid_device);
6441 	if (!ioc->wait_for_discovery_to_complete) {
6442 		rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
6443 		    raid_device->id, 0);
6444 		if (rc)
6445 			_scsih_raid_device_remove(ioc, raid_device);
6446 	} else {
6447 		spin_lock_irqsave(&ioc->raid_device_lock, flags);
6448 		_scsih_determine_boot_device(ioc, raid_device, 1);
6449 		spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6450 	}
6451 }
6452 
6453 /**
6454  * _scsih_sas_volume_delete - delete volume
6455  * @ioc: per adapter object
6456  * @handle: volume device handle
6457  * Context: user.
6458  *
6459  * Return nothing.
6460  */
6461 static void
6462 _scsih_sas_volume_delete(struct MPT3SAS_ADAPTER *ioc, u16 handle)
6463 {
6464 	struct _raid_device *raid_device;
6465 	unsigned long flags;
6466 	struct MPT3SAS_TARGET *sas_target_priv_data;
6467 	struct scsi_target *starget = NULL;
6468 
6469 	spin_lock_irqsave(&ioc->raid_device_lock, flags);
6470 	raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
6471 	if (raid_device) {
6472 		if (raid_device->starget) {
6473 			starget = raid_device->starget;
6474 			sas_target_priv_data = starget->hostdata;
6475 			sas_target_priv_data->deleted = 1;
6476 		}
6477 		pr_info(MPT3SAS_FMT "removing handle(0x%04x), wwid(0x%016llx)\n",
6478 			ioc->name,  raid_device->handle,
6479 		    (unsigned long long) raid_device->wwid);
6480 		list_del(&raid_device->list);
6481 		kfree(raid_device);
6482 	}
6483 	spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6484 	if (starget)
6485 		scsi_remove_target(&starget->dev);
6486 }
6487 
6488 /**
6489  * _scsih_sas_pd_expose - expose pd component to /dev/sdX
6490  * @ioc: per adapter object
6491  * @element: IR config element data
6492  * Context: user.
6493  *
6494  * Return nothing.
6495  */
6496 static void
6497 _scsih_sas_pd_expose(struct MPT3SAS_ADAPTER *ioc,
6498 	Mpi2EventIrConfigElement_t *element)
6499 {
6500 	struct _sas_device *sas_device;
6501 	struct scsi_target *starget = NULL;
6502 	struct MPT3SAS_TARGET *sas_target_priv_data;
6503 	unsigned long flags;
6504 	u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6505 
6506 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
6507 	sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
6508 	if (sas_device) {
6509 		sas_device->volume_handle = 0;
6510 		sas_device->volume_wwid = 0;
6511 		clear_bit(handle, ioc->pd_handles);
6512 		if (sas_device->starget && sas_device->starget->hostdata) {
6513 			starget = sas_device->starget;
6514 			sas_target_priv_data = starget->hostdata;
6515 			sas_target_priv_data->flags &=
6516 			    ~MPT_TARGET_FLAGS_RAID_COMPONENT;
6517 		}
6518 	}
6519 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
6520 	if (!sas_device)
6521 		return;
6522 
6523 	/* exposing raid component */
6524 	if (starget)
6525 		starget_for_each_device(starget, NULL, _scsih_reprobe_lun);
6526 
6527 	sas_device_put(sas_device);
6528 }
6529 
6530 /**
6531  * _scsih_sas_pd_hide - hide pd component from /dev/sdX
6532  * @ioc: per adapter object
6533  * @element: IR config element data
6534  * Context: user.
6535  *
6536  * Return nothing.
6537  */
6538 static void
6539 _scsih_sas_pd_hide(struct MPT3SAS_ADAPTER *ioc,
6540 	Mpi2EventIrConfigElement_t *element)
6541 {
6542 	struct _sas_device *sas_device;
6543 	struct scsi_target *starget = NULL;
6544 	struct MPT3SAS_TARGET *sas_target_priv_data;
6545 	unsigned long flags;
6546 	u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6547 	u16 volume_handle = 0;
6548 	u64 volume_wwid = 0;
6549 
6550 	mpt3sas_config_get_volume_handle(ioc, handle, &volume_handle);
6551 	if (volume_handle)
6552 		mpt3sas_config_get_volume_wwid(ioc, volume_handle,
6553 		    &volume_wwid);
6554 
6555 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
6556 	sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
6557 	if (sas_device) {
6558 		set_bit(handle, ioc->pd_handles);
6559 		if (sas_device->starget && sas_device->starget->hostdata) {
6560 			starget = sas_device->starget;
6561 			sas_target_priv_data = starget->hostdata;
6562 			sas_target_priv_data->flags |=
6563 			    MPT_TARGET_FLAGS_RAID_COMPONENT;
6564 			sas_device->volume_handle = volume_handle;
6565 			sas_device->volume_wwid = volume_wwid;
6566 		}
6567 	}
6568 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
6569 	if (!sas_device)
6570 		return;
6571 
6572 	/* hiding raid component */
6573 	_scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6574 
6575 	if (starget)
6576 		starget_for_each_device(starget, (void *)1, _scsih_reprobe_lun);
6577 
6578 	sas_device_put(sas_device);
6579 }
6580 
6581 /**
6582  * _scsih_sas_pd_delete - delete pd component
6583  * @ioc: per adapter object
6584  * @element: IR config element data
6585  * Context: user.
6586  *
6587  * Return nothing.
6588  */
6589 static void
6590 _scsih_sas_pd_delete(struct MPT3SAS_ADAPTER *ioc,
6591 	Mpi2EventIrConfigElement_t *element)
6592 {
6593 	u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6594 
6595 	_scsih_device_remove_by_handle(ioc, handle);
6596 }
6597 
6598 /**
6599  * _scsih_sas_pd_add - remove pd component
6600  * @ioc: per adapter object
6601  * @element: IR config element data
6602  * Context: user.
6603  *
6604  * Return nothing.
6605  */
6606 static void
6607 _scsih_sas_pd_add(struct MPT3SAS_ADAPTER *ioc,
6608 	Mpi2EventIrConfigElement_t *element)
6609 {
6610 	struct _sas_device *sas_device;
6611 	u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
6612 	Mpi2ConfigReply_t mpi_reply;
6613 	Mpi2SasDevicePage0_t sas_device_pg0;
6614 	u32 ioc_status;
6615 	u64 sas_address;
6616 	u16 parent_handle;
6617 
6618 	set_bit(handle, ioc->pd_handles);
6619 
6620 	sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
6621 	if (sas_device) {
6622 		_scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6623 		sas_device_put(sas_device);
6624 		return;
6625 	}
6626 
6627 	if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
6628 	    MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
6629 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6630 		    ioc->name, __FILE__, __LINE__, __func__);
6631 		return;
6632 	}
6633 
6634 	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
6635 	    MPI2_IOCSTATUS_MASK;
6636 	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6637 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6638 		    ioc->name, __FILE__, __LINE__, __func__);
6639 		return;
6640 	}
6641 
6642 	parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
6643 	if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address))
6644 		mpt3sas_transport_update_links(ioc, sas_address, handle,
6645 		    sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
6646 
6647 	_scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
6648 	_scsih_add_device(ioc, handle, 0, 1);
6649 }
6650 
6651 /**
6652  * _scsih_sas_ir_config_change_event_debug - debug for IR Config Change events
6653  * @ioc: per adapter object
6654  * @event_data: event data payload
6655  * Context: user.
6656  *
6657  * Return nothing.
6658  */
6659 static void
6660 _scsih_sas_ir_config_change_event_debug(struct MPT3SAS_ADAPTER *ioc,
6661 	Mpi2EventDataIrConfigChangeList_t *event_data)
6662 {
6663 	Mpi2EventIrConfigElement_t *element;
6664 	u8 element_type;
6665 	int i;
6666 	char *reason_str = NULL, *element_str = NULL;
6667 
6668 	element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
6669 
6670 	pr_info(MPT3SAS_FMT "raid config change: (%s), elements(%d)\n",
6671 	    ioc->name, (le32_to_cpu(event_data->Flags) &
6672 	    MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG) ?
6673 	    "foreign" : "native", event_data->NumElements);
6674 	for (i = 0; i < event_data->NumElements; i++, element++) {
6675 		switch (element->ReasonCode) {
6676 		case MPI2_EVENT_IR_CHANGE_RC_ADDED:
6677 			reason_str = "add";
6678 			break;
6679 		case MPI2_EVENT_IR_CHANGE_RC_REMOVED:
6680 			reason_str = "remove";
6681 			break;
6682 		case MPI2_EVENT_IR_CHANGE_RC_NO_CHANGE:
6683 			reason_str = "no change";
6684 			break;
6685 		case MPI2_EVENT_IR_CHANGE_RC_HIDE:
6686 			reason_str = "hide";
6687 			break;
6688 		case MPI2_EVENT_IR_CHANGE_RC_UNHIDE:
6689 			reason_str = "unhide";
6690 			break;
6691 		case MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED:
6692 			reason_str = "volume_created";
6693 			break;
6694 		case MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED:
6695 			reason_str = "volume_deleted";
6696 			break;
6697 		case MPI2_EVENT_IR_CHANGE_RC_PD_CREATED:
6698 			reason_str = "pd_created";
6699 			break;
6700 		case MPI2_EVENT_IR_CHANGE_RC_PD_DELETED:
6701 			reason_str = "pd_deleted";
6702 			break;
6703 		default:
6704 			reason_str = "unknown reason";
6705 			break;
6706 		}
6707 		element_type = le16_to_cpu(element->ElementFlags) &
6708 		    MPI2_EVENT_IR_CHANGE_EFLAGS_ELEMENT_TYPE_MASK;
6709 		switch (element_type) {
6710 		case MPI2_EVENT_IR_CHANGE_EFLAGS_VOLUME_ELEMENT:
6711 			element_str = "volume";
6712 			break;
6713 		case MPI2_EVENT_IR_CHANGE_EFLAGS_VOLPHYSDISK_ELEMENT:
6714 			element_str = "phys disk";
6715 			break;
6716 		case MPI2_EVENT_IR_CHANGE_EFLAGS_HOTSPARE_ELEMENT:
6717 			element_str = "hot spare";
6718 			break;
6719 		default:
6720 			element_str = "unknown element";
6721 			break;
6722 		}
6723 		pr_info("\t(%s:%s), vol handle(0x%04x), " \
6724 		    "pd handle(0x%04x), pd num(0x%02x)\n", element_str,
6725 		    reason_str, le16_to_cpu(element->VolDevHandle),
6726 		    le16_to_cpu(element->PhysDiskDevHandle),
6727 		    element->PhysDiskNum);
6728 	}
6729 }
6730 
6731 /**
6732  * _scsih_sas_ir_config_change_event - handle ir configuration change events
6733  * @ioc: per adapter object
6734  * @fw_event: The fw_event_work object
6735  * Context: user.
6736  *
6737  * Return nothing.
6738  */
6739 static void
6740 _scsih_sas_ir_config_change_event(struct MPT3SAS_ADAPTER *ioc,
6741 	struct fw_event_work *fw_event)
6742 {
6743 	Mpi2EventIrConfigElement_t *element;
6744 	int i;
6745 	u8 foreign_config;
6746 	Mpi2EventDataIrConfigChangeList_t *event_data =
6747 		(Mpi2EventDataIrConfigChangeList_t *)
6748 		fw_event->event_data;
6749 
6750 	if ((ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) &&
6751 	     (!ioc->hide_ir_msg))
6752 		_scsih_sas_ir_config_change_event_debug(ioc, event_data);
6753 
6754 	foreign_config = (le32_to_cpu(event_data->Flags) &
6755 	    MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG) ? 1 : 0;
6756 
6757 	element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
6758 	if (ioc->shost_recovery &&
6759 	    ioc->hba_mpi_version_belonged != MPI2_VERSION) {
6760 		for (i = 0; i < event_data->NumElements; i++, element++) {
6761 			if (element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_HIDE)
6762 				_scsih_ir_fastpath(ioc,
6763 					le16_to_cpu(element->PhysDiskDevHandle),
6764 					element->PhysDiskNum);
6765 		}
6766 		return;
6767 	}
6768 
6769 	for (i = 0; i < event_data->NumElements; i++, element++) {
6770 
6771 		switch (element->ReasonCode) {
6772 		case MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED:
6773 		case MPI2_EVENT_IR_CHANGE_RC_ADDED:
6774 			if (!foreign_config)
6775 				_scsih_sas_volume_add(ioc, element);
6776 			break;
6777 		case MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED:
6778 		case MPI2_EVENT_IR_CHANGE_RC_REMOVED:
6779 			if (!foreign_config)
6780 				_scsih_sas_volume_delete(ioc,
6781 				    le16_to_cpu(element->VolDevHandle));
6782 			break;
6783 		case MPI2_EVENT_IR_CHANGE_RC_PD_CREATED:
6784 			if (!ioc->is_warpdrive)
6785 				_scsih_sas_pd_hide(ioc, element);
6786 			break;
6787 		case MPI2_EVENT_IR_CHANGE_RC_PD_DELETED:
6788 			if (!ioc->is_warpdrive)
6789 				_scsih_sas_pd_expose(ioc, element);
6790 			break;
6791 		case MPI2_EVENT_IR_CHANGE_RC_HIDE:
6792 			if (!ioc->is_warpdrive)
6793 				_scsih_sas_pd_add(ioc, element);
6794 			break;
6795 		case MPI2_EVENT_IR_CHANGE_RC_UNHIDE:
6796 			if (!ioc->is_warpdrive)
6797 				_scsih_sas_pd_delete(ioc, element);
6798 			break;
6799 		}
6800 	}
6801 }
6802 
6803 /**
6804  * _scsih_sas_ir_volume_event - IR volume event
6805  * @ioc: per adapter object
6806  * @fw_event: The fw_event_work object
6807  * Context: user.
6808  *
6809  * Return nothing.
6810  */
6811 static void
6812 _scsih_sas_ir_volume_event(struct MPT3SAS_ADAPTER *ioc,
6813 	struct fw_event_work *fw_event)
6814 {
6815 	u64 wwid;
6816 	unsigned long flags;
6817 	struct _raid_device *raid_device;
6818 	u16 handle;
6819 	u32 state;
6820 	int rc;
6821 	Mpi2EventDataIrVolume_t *event_data =
6822 		(Mpi2EventDataIrVolume_t *) fw_event->event_data;
6823 
6824 	if (ioc->shost_recovery)
6825 		return;
6826 
6827 	if (event_data->ReasonCode != MPI2_EVENT_IR_VOLUME_RC_STATE_CHANGED)
6828 		return;
6829 
6830 	handle = le16_to_cpu(event_data->VolDevHandle);
6831 	state = le32_to_cpu(event_data->NewValue);
6832 	if (!ioc->hide_ir_msg)
6833 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
6834 		    "%s: handle(0x%04x), old(0x%08x), new(0x%08x)\n",
6835 		    ioc->name, __func__,  handle,
6836 		    le32_to_cpu(event_data->PreviousValue), state));
6837 	switch (state) {
6838 	case MPI2_RAID_VOL_STATE_MISSING:
6839 	case MPI2_RAID_VOL_STATE_FAILED:
6840 		_scsih_sas_volume_delete(ioc, handle);
6841 		break;
6842 
6843 	case MPI2_RAID_VOL_STATE_ONLINE:
6844 	case MPI2_RAID_VOL_STATE_DEGRADED:
6845 	case MPI2_RAID_VOL_STATE_OPTIMAL:
6846 
6847 		spin_lock_irqsave(&ioc->raid_device_lock, flags);
6848 		raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
6849 		spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
6850 
6851 		if (raid_device)
6852 			break;
6853 
6854 		mpt3sas_config_get_volume_wwid(ioc, handle, &wwid);
6855 		if (!wwid) {
6856 			pr_err(MPT3SAS_FMT
6857 			    "failure at %s:%d/%s()!\n", ioc->name,
6858 			    __FILE__, __LINE__, __func__);
6859 			break;
6860 		}
6861 
6862 		raid_device = kzalloc(sizeof(struct _raid_device), GFP_KERNEL);
6863 		if (!raid_device) {
6864 			pr_err(MPT3SAS_FMT
6865 			    "failure at %s:%d/%s()!\n", ioc->name,
6866 			    __FILE__, __LINE__, __func__);
6867 			break;
6868 		}
6869 
6870 		raid_device->id = ioc->sas_id++;
6871 		raid_device->channel = RAID_CHANNEL;
6872 		raid_device->handle = handle;
6873 		raid_device->wwid = wwid;
6874 		_scsih_raid_device_add(ioc, raid_device);
6875 		rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
6876 		    raid_device->id, 0);
6877 		if (rc)
6878 			_scsih_raid_device_remove(ioc, raid_device);
6879 		break;
6880 
6881 	case MPI2_RAID_VOL_STATE_INITIALIZING:
6882 	default:
6883 		break;
6884 	}
6885 }
6886 
6887 /**
6888  * _scsih_sas_ir_physical_disk_event - PD event
6889  * @ioc: per adapter object
6890  * @fw_event: The fw_event_work object
6891  * Context: user.
6892  *
6893  * Return nothing.
6894  */
6895 static void
6896 _scsih_sas_ir_physical_disk_event(struct MPT3SAS_ADAPTER *ioc,
6897 	struct fw_event_work *fw_event)
6898 {
6899 	u16 handle, parent_handle;
6900 	u32 state;
6901 	struct _sas_device *sas_device;
6902 	Mpi2ConfigReply_t mpi_reply;
6903 	Mpi2SasDevicePage0_t sas_device_pg0;
6904 	u32 ioc_status;
6905 	Mpi2EventDataIrPhysicalDisk_t *event_data =
6906 		(Mpi2EventDataIrPhysicalDisk_t *) fw_event->event_data;
6907 	u64 sas_address;
6908 
6909 	if (ioc->shost_recovery)
6910 		return;
6911 
6912 	if (event_data->ReasonCode != MPI2_EVENT_IR_PHYSDISK_RC_STATE_CHANGED)
6913 		return;
6914 
6915 	handle = le16_to_cpu(event_data->PhysDiskDevHandle);
6916 	state = le32_to_cpu(event_data->NewValue);
6917 
6918 	if (!ioc->hide_ir_msg)
6919 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
6920 		    "%s: handle(0x%04x), old(0x%08x), new(0x%08x)\n",
6921 		    ioc->name, __func__,  handle,
6922 		    le32_to_cpu(event_data->PreviousValue), state));
6923 
6924 	switch (state) {
6925 	case MPI2_RAID_PD_STATE_ONLINE:
6926 	case MPI2_RAID_PD_STATE_DEGRADED:
6927 	case MPI2_RAID_PD_STATE_REBUILDING:
6928 	case MPI2_RAID_PD_STATE_OPTIMAL:
6929 	case MPI2_RAID_PD_STATE_HOT_SPARE:
6930 
6931 		if (!ioc->is_warpdrive)
6932 			set_bit(handle, ioc->pd_handles);
6933 
6934 		sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
6935 		if (sas_device) {
6936 			sas_device_put(sas_device);
6937 			return;
6938 		}
6939 
6940 		if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
6941 		    &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
6942 		    handle))) {
6943 			pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6944 			    ioc->name, __FILE__, __LINE__, __func__);
6945 			return;
6946 		}
6947 
6948 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
6949 		    MPI2_IOCSTATUS_MASK;
6950 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
6951 			pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
6952 			    ioc->name, __FILE__, __LINE__, __func__);
6953 			return;
6954 		}
6955 
6956 		parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
6957 		if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address))
6958 			mpt3sas_transport_update_links(ioc, sas_address, handle,
6959 			    sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
6960 
6961 		_scsih_add_device(ioc, handle, 0, 1);
6962 
6963 		break;
6964 
6965 	case MPI2_RAID_PD_STATE_OFFLINE:
6966 	case MPI2_RAID_PD_STATE_NOT_CONFIGURED:
6967 	case MPI2_RAID_PD_STATE_NOT_COMPATIBLE:
6968 	default:
6969 		break;
6970 	}
6971 }
6972 
6973 /**
6974  * _scsih_sas_ir_operation_status_event_debug - debug for IR op event
6975  * @ioc: per adapter object
6976  * @event_data: event data payload
6977  * Context: user.
6978  *
6979  * Return nothing.
6980  */
6981 static void
6982 _scsih_sas_ir_operation_status_event_debug(struct MPT3SAS_ADAPTER *ioc,
6983 	Mpi2EventDataIrOperationStatus_t *event_data)
6984 {
6985 	char *reason_str = NULL;
6986 
6987 	switch (event_data->RAIDOperation) {
6988 	case MPI2_EVENT_IR_RAIDOP_RESYNC:
6989 		reason_str = "resync";
6990 		break;
6991 	case MPI2_EVENT_IR_RAIDOP_ONLINE_CAP_EXPANSION:
6992 		reason_str = "online capacity expansion";
6993 		break;
6994 	case MPI2_EVENT_IR_RAIDOP_CONSISTENCY_CHECK:
6995 		reason_str = "consistency check";
6996 		break;
6997 	case MPI2_EVENT_IR_RAIDOP_BACKGROUND_INIT:
6998 		reason_str = "background init";
6999 		break;
7000 	case MPI2_EVENT_IR_RAIDOP_MAKE_DATA_CONSISTENT:
7001 		reason_str = "make data consistent";
7002 		break;
7003 	}
7004 
7005 	if (!reason_str)
7006 		return;
7007 
7008 	pr_info(MPT3SAS_FMT "raid operational status: (%s)" \
7009 	    "\thandle(0x%04x), percent complete(%d)\n",
7010 	    ioc->name, reason_str,
7011 	    le16_to_cpu(event_data->VolDevHandle),
7012 	    event_data->PercentComplete);
7013 }
7014 
7015 /**
7016  * _scsih_sas_ir_operation_status_event - handle RAID operation events
7017  * @ioc: per adapter object
7018  * @fw_event: The fw_event_work object
7019  * Context: user.
7020  *
7021  * Return nothing.
7022  */
7023 static void
7024 _scsih_sas_ir_operation_status_event(struct MPT3SAS_ADAPTER *ioc,
7025 	struct fw_event_work *fw_event)
7026 {
7027 	Mpi2EventDataIrOperationStatus_t *event_data =
7028 		(Mpi2EventDataIrOperationStatus_t *)
7029 		fw_event->event_data;
7030 	static struct _raid_device *raid_device;
7031 	unsigned long flags;
7032 	u16 handle;
7033 
7034 	if ((ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) &&
7035 	    (!ioc->hide_ir_msg))
7036 		_scsih_sas_ir_operation_status_event_debug(ioc,
7037 		     event_data);
7038 
7039 	/* code added for raid transport support */
7040 	if (event_data->RAIDOperation == MPI2_EVENT_IR_RAIDOP_RESYNC) {
7041 
7042 		spin_lock_irqsave(&ioc->raid_device_lock, flags);
7043 		handle = le16_to_cpu(event_data->VolDevHandle);
7044 		raid_device = mpt3sas_raid_device_find_by_handle(ioc, handle);
7045 		if (raid_device)
7046 			raid_device->percent_complete =
7047 			    event_data->PercentComplete;
7048 		spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7049 	}
7050 }
7051 
7052 /**
7053  * _scsih_prep_device_scan - initialize parameters prior to device scan
7054  * @ioc: per adapter object
7055  *
7056  * Set the deleted flag prior to device scan.  If the device is found during
7057  * the scan, then we clear the deleted flag.
7058  */
7059 static void
7060 _scsih_prep_device_scan(struct MPT3SAS_ADAPTER *ioc)
7061 {
7062 	struct MPT3SAS_DEVICE *sas_device_priv_data;
7063 	struct scsi_device *sdev;
7064 
7065 	shost_for_each_device(sdev, ioc->shost) {
7066 		sas_device_priv_data = sdev->hostdata;
7067 		if (sas_device_priv_data && sas_device_priv_data->sas_target)
7068 			sas_device_priv_data->sas_target->deleted = 1;
7069 	}
7070 }
7071 
7072 /**
7073  * _scsih_mark_responding_sas_device - mark a sas_devices as responding
7074  * @ioc: per adapter object
7075  * @sas_device_pg0: SAS Device page 0
7076  *
7077  * After host reset, find out whether devices are still responding.
7078  * Used in _scsih_remove_unresponsive_sas_devices.
7079  *
7080  * Return nothing.
7081  */
7082 static void
7083 _scsih_mark_responding_sas_device(struct MPT3SAS_ADAPTER *ioc,
7084 Mpi2SasDevicePage0_t *sas_device_pg0)
7085 {
7086 	struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
7087 	struct scsi_target *starget;
7088 	struct _sas_device *sas_device;
7089 	unsigned long flags;
7090 
7091 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
7092 	list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
7093 		if ((sas_device->sas_address == sas_device_pg0->SASAddress) &&
7094 			(sas_device->slot == sas_device_pg0->Slot)) {
7095 			sas_device->responding = 1;
7096 			starget = sas_device->starget;
7097 			if (starget && starget->hostdata) {
7098 				sas_target_priv_data = starget->hostdata;
7099 				sas_target_priv_data->tm_busy = 0;
7100 				sas_target_priv_data->deleted = 0;
7101 			} else
7102 				sas_target_priv_data = NULL;
7103 			if (starget) {
7104 				starget_printk(KERN_INFO, starget,
7105 				    "handle(0x%04x), sas_addr(0x%016llx)\n",
7106 				    sas_device_pg0->DevHandle,
7107 				    (unsigned long long)
7108 				    sas_device->sas_address);
7109 
7110 				if (sas_device->enclosure_handle != 0)
7111 					starget_printk(KERN_INFO, starget,
7112 					 "enclosure logical id(0x%016llx),"
7113 					 " slot(%d)\n",
7114 					 (unsigned long long)
7115 					 sas_device->enclosure_logical_id,
7116 					 sas_device->slot);
7117 			}
7118 			if (sas_device_pg0->Flags &
7119 			      MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
7120 				sas_device->enclosure_level =
7121 				   sas_device_pg0->EnclosureLevel;
7122 				memcpy(&sas_device->connector_name[0],
7123 					&sas_device_pg0->ConnectorName[0], 4);
7124 			} else {
7125 				sas_device->enclosure_level = 0;
7126 				sas_device->connector_name[0] = '\0';
7127 			}
7128 
7129 			if (sas_device->handle == sas_device_pg0->DevHandle)
7130 				goto out;
7131 			pr_info("\thandle changed from(0x%04x)!!!\n",
7132 			    sas_device->handle);
7133 			sas_device->handle = sas_device_pg0->DevHandle;
7134 			if (sas_target_priv_data)
7135 				sas_target_priv_data->handle =
7136 					sas_device_pg0->DevHandle;
7137 			goto out;
7138 		}
7139 	}
7140  out:
7141 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
7142 }
7143 
7144 /**
7145  * _scsih_search_responding_sas_devices -
7146  * @ioc: per adapter object
7147  *
7148  * After host reset, find out whether devices are still responding.
7149  * If not remove.
7150  *
7151  * Return nothing.
7152  */
7153 static void
7154 _scsih_search_responding_sas_devices(struct MPT3SAS_ADAPTER *ioc)
7155 {
7156 	Mpi2SasDevicePage0_t sas_device_pg0;
7157 	Mpi2ConfigReply_t mpi_reply;
7158 	u16 ioc_status;
7159 	u16 handle;
7160 	u32 device_info;
7161 
7162 	pr_info(MPT3SAS_FMT "search for end-devices: start\n", ioc->name);
7163 
7164 	if (list_empty(&ioc->sas_device_list))
7165 		goto out;
7166 
7167 	handle = 0xFFFF;
7168 	while (!(mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7169 	    &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_GET_NEXT_HANDLE,
7170 	    handle))) {
7171 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7172 		    MPI2_IOCSTATUS_MASK;
7173 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7174 			break;
7175 		handle = sas_device_pg0.DevHandle =
7176 				le16_to_cpu(sas_device_pg0.DevHandle);
7177 		device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
7178 		if (!(_scsih_is_end_device(device_info)))
7179 			continue;
7180 		sas_device_pg0.SASAddress =
7181 				le64_to_cpu(sas_device_pg0.SASAddress);
7182 		sas_device_pg0.Slot = le16_to_cpu(sas_device_pg0.Slot);
7183 		sas_device_pg0.Flags = le16_to_cpu(sas_device_pg0.Flags);
7184 		_scsih_mark_responding_sas_device(ioc, &sas_device_pg0);
7185 	}
7186 
7187  out:
7188 	pr_info(MPT3SAS_FMT "search for end-devices: complete\n",
7189 	    ioc->name);
7190 }
7191 
7192 /**
7193  * _scsih_mark_responding_raid_device - mark a raid_device as responding
7194  * @ioc: per adapter object
7195  * @wwid: world wide identifier for raid volume
7196  * @handle: device handle
7197  *
7198  * After host reset, find out whether devices are still responding.
7199  * Used in _scsih_remove_unresponsive_raid_devices.
7200  *
7201  * Return nothing.
7202  */
7203 static void
7204 _scsih_mark_responding_raid_device(struct MPT3SAS_ADAPTER *ioc, u64 wwid,
7205 	u16 handle)
7206 {
7207 	struct MPT3SAS_TARGET *sas_target_priv_data = NULL;
7208 	struct scsi_target *starget;
7209 	struct _raid_device *raid_device;
7210 	unsigned long flags;
7211 
7212 	spin_lock_irqsave(&ioc->raid_device_lock, flags);
7213 	list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
7214 		if (raid_device->wwid == wwid && raid_device->starget) {
7215 			starget = raid_device->starget;
7216 			if (starget && starget->hostdata) {
7217 				sas_target_priv_data = starget->hostdata;
7218 				sas_target_priv_data->deleted = 0;
7219 			} else
7220 				sas_target_priv_data = NULL;
7221 			raid_device->responding = 1;
7222 			spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7223 			starget_printk(KERN_INFO, raid_device->starget,
7224 			    "handle(0x%04x), wwid(0x%016llx)\n", handle,
7225 			    (unsigned long long)raid_device->wwid);
7226 
7227 			/*
7228 			 * WARPDRIVE: The handles of the PDs might have changed
7229 			 * across the host reset so re-initialize the
7230 			 * required data for Direct IO
7231 			 */
7232 			mpt3sas_init_warpdrive_properties(ioc, raid_device);
7233 			spin_lock_irqsave(&ioc->raid_device_lock, flags);
7234 			if (raid_device->handle == handle) {
7235 				spin_unlock_irqrestore(&ioc->raid_device_lock,
7236 				    flags);
7237 				return;
7238 			}
7239 			pr_info("\thandle changed from(0x%04x)!!!\n",
7240 			    raid_device->handle);
7241 			raid_device->handle = handle;
7242 			if (sas_target_priv_data)
7243 				sas_target_priv_data->handle = handle;
7244 			spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7245 			return;
7246 		}
7247 	}
7248 	spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7249 }
7250 
7251 /**
7252  * _scsih_search_responding_raid_devices -
7253  * @ioc: per adapter object
7254  *
7255  * After host reset, find out whether devices are still responding.
7256  * If not remove.
7257  *
7258  * Return nothing.
7259  */
7260 static void
7261 _scsih_search_responding_raid_devices(struct MPT3SAS_ADAPTER *ioc)
7262 {
7263 	Mpi2RaidVolPage1_t volume_pg1;
7264 	Mpi2RaidVolPage0_t volume_pg0;
7265 	Mpi2RaidPhysDiskPage0_t pd_pg0;
7266 	Mpi2ConfigReply_t mpi_reply;
7267 	u16 ioc_status;
7268 	u16 handle;
7269 	u8 phys_disk_num;
7270 
7271 	if (!ioc->ir_firmware)
7272 		return;
7273 
7274 	pr_info(MPT3SAS_FMT "search for raid volumes: start\n",
7275 	    ioc->name);
7276 
7277 	if (list_empty(&ioc->raid_device_list))
7278 		goto out;
7279 
7280 	handle = 0xFFFF;
7281 	while (!(mpt3sas_config_get_raid_volume_pg1(ioc, &mpi_reply,
7282 	    &volume_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
7283 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7284 		    MPI2_IOCSTATUS_MASK;
7285 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7286 			break;
7287 		handle = le16_to_cpu(volume_pg1.DevHandle);
7288 
7289 		if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply,
7290 		    &volume_pg0, MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
7291 		     sizeof(Mpi2RaidVolPage0_t)))
7292 			continue;
7293 
7294 		if (volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_OPTIMAL ||
7295 		    volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_ONLINE ||
7296 		    volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_DEGRADED)
7297 			_scsih_mark_responding_raid_device(ioc,
7298 			    le64_to_cpu(volume_pg1.WWID), handle);
7299 	}
7300 
7301 	/* refresh the pd_handles */
7302 	if (!ioc->is_warpdrive) {
7303 		phys_disk_num = 0xFF;
7304 		memset(ioc->pd_handles, 0, ioc->pd_handles_sz);
7305 		while (!(mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
7306 		    &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_GET_NEXT_PHYSDISKNUM,
7307 		    phys_disk_num))) {
7308 			ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7309 			    MPI2_IOCSTATUS_MASK;
7310 			if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7311 				break;
7312 			phys_disk_num = pd_pg0.PhysDiskNum;
7313 			handle = le16_to_cpu(pd_pg0.DevHandle);
7314 			set_bit(handle, ioc->pd_handles);
7315 		}
7316 	}
7317  out:
7318 	pr_info(MPT3SAS_FMT "search for responding raid volumes: complete\n",
7319 		ioc->name);
7320 }
7321 
7322 /**
7323  * _scsih_mark_responding_expander - mark a expander as responding
7324  * @ioc: per adapter object
7325  * @sas_address: sas address
7326  * @handle:
7327  *
7328  * After host reset, find out whether devices are still responding.
7329  * Used in _scsih_remove_unresponsive_expanders.
7330  *
7331  * Return nothing.
7332  */
7333 static void
7334 _scsih_mark_responding_expander(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
7335 	u16 handle)
7336 {
7337 	struct _sas_node *sas_expander;
7338 	unsigned long flags;
7339 	int i;
7340 
7341 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
7342 	list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
7343 		if (sas_expander->sas_address != sas_address)
7344 			continue;
7345 		sas_expander->responding = 1;
7346 		if (sas_expander->handle == handle)
7347 			goto out;
7348 		pr_info("\texpander(0x%016llx): handle changed" \
7349 		    " from(0x%04x) to (0x%04x)!!!\n",
7350 		    (unsigned long long)sas_expander->sas_address,
7351 		    sas_expander->handle, handle);
7352 		sas_expander->handle = handle;
7353 		for (i = 0 ; i < sas_expander->num_phys ; i++)
7354 			sas_expander->phy[i].handle = handle;
7355 		goto out;
7356 	}
7357  out:
7358 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7359 }
7360 
7361 /**
7362  * _scsih_search_responding_expanders -
7363  * @ioc: per adapter object
7364  *
7365  * After host reset, find out whether devices are still responding.
7366  * If not remove.
7367  *
7368  * Return nothing.
7369  */
7370 static void
7371 _scsih_search_responding_expanders(struct MPT3SAS_ADAPTER *ioc)
7372 {
7373 	Mpi2ExpanderPage0_t expander_pg0;
7374 	Mpi2ConfigReply_t mpi_reply;
7375 	u16 ioc_status;
7376 	u64 sas_address;
7377 	u16 handle;
7378 
7379 	pr_info(MPT3SAS_FMT "search for expanders: start\n", ioc->name);
7380 
7381 	if (list_empty(&ioc->sas_expander_list))
7382 		goto out;
7383 
7384 	handle = 0xFFFF;
7385 	while (!(mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
7386 	    MPI2_SAS_EXPAND_PGAD_FORM_GET_NEXT_HNDL, handle))) {
7387 
7388 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7389 		    MPI2_IOCSTATUS_MASK;
7390 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
7391 			break;
7392 
7393 		handle = le16_to_cpu(expander_pg0.DevHandle);
7394 		sas_address = le64_to_cpu(expander_pg0.SASAddress);
7395 		pr_info("\texpander present: handle(0x%04x), sas_addr(0x%016llx)\n",
7396 			handle,
7397 		    (unsigned long long)sas_address);
7398 		_scsih_mark_responding_expander(ioc, sas_address, handle);
7399 	}
7400 
7401  out:
7402 	pr_info(MPT3SAS_FMT "search for expanders: complete\n", ioc->name);
7403 }
7404 
7405 /**
7406  * _scsih_remove_unresponding_sas_devices - removing unresponding devices
7407  * @ioc: per adapter object
7408  *
7409  * Return nothing.
7410  */
7411 static void
7412 _scsih_remove_unresponding_sas_devices(struct MPT3SAS_ADAPTER *ioc)
7413 {
7414 	struct _sas_device *sas_device, *sas_device_next;
7415 	struct _sas_node *sas_expander, *sas_expander_next;
7416 	struct _raid_device *raid_device, *raid_device_next;
7417 	struct list_head tmp_list;
7418 	unsigned long flags;
7419 	LIST_HEAD(head);
7420 
7421 	pr_info(MPT3SAS_FMT "removing unresponding devices: start\n",
7422 	    ioc->name);
7423 
7424 	/* removing unresponding end devices */
7425 	pr_info(MPT3SAS_FMT "removing unresponding devices: end-devices\n",
7426 	    ioc->name);
7427 	/*
7428 	 * Iterate, pulling off devices marked as non-responding. We become the
7429 	 * owner for the reference the list had on any object we prune.
7430 	 */
7431 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
7432 	list_for_each_entry_safe(sas_device, sas_device_next,
7433 	    &ioc->sas_device_list, list) {
7434 		if (!sas_device->responding)
7435 			list_move_tail(&sas_device->list, &head);
7436 		else
7437 			sas_device->responding = 0;
7438 	}
7439 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
7440 
7441 	/*
7442 	 * Now, uninitialize and remove the unresponding devices we pruned.
7443 	 */
7444 	list_for_each_entry_safe(sas_device, sas_device_next, &head, list) {
7445 		_scsih_remove_device(ioc, sas_device);
7446 		list_del_init(&sas_device->list);
7447 		sas_device_put(sas_device);
7448 	}
7449 
7450 	/* removing unresponding volumes */
7451 	if (ioc->ir_firmware) {
7452 		pr_info(MPT3SAS_FMT "removing unresponding devices: volumes\n",
7453 			ioc->name);
7454 		list_for_each_entry_safe(raid_device, raid_device_next,
7455 		    &ioc->raid_device_list, list) {
7456 			if (!raid_device->responding)
7457 				_scsih_sas_volume_delete(ioc,
7458 				    raid_device->handle);
7459 			else
7460 				raid_device->responding = 0;
7461 		}
7462 	}
7463 
7464 	/* removing unresponding expanders */
7465 	pr_info(MPT3SAS_FMT "removing unresponding devices: expanders\n",
7466 	    ioc->name);
7467 	spin_lock_irqsave(&ioc->sas_node_lock, flags);
7468 	INIT_LIST_HEAD(&tmp_list);
7469 	list_for_each_entry_safe(sas_expander, sas_expander_next,
7470 	    &ioc->sas_expander_list, list) {
7471 		if (!sas_expander->responding)
7472 			list_move_tail(&sas_expander->list, &tmp_list);
7473 		else
7474 			sas_expander->responding = 0;
7475 	}
7476 	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7477 	list_for_each_entry_safe(sas_expander, sas_expander_next, &tmp_list,
7478 	    list) {
7479 		list_del(&sas_expander->list);
7480 		_scsih_expander_node_remove(ioc, sas_expander);
7481 	}
7482 
7483 	pr_info(MPT3SAS_FMT "removing unresponding devices: complete\n",
7484 	    ioc->name);
7485 
7486 	/* unblock devices */
7487 	_scsih_ublock_io_all_device(ioc);
7488 }
7489 
7490 static void
7491 _scsih_refresh_expander_links(struct MPT3SAS_ADAPTER *ioc,
7492 	struct _sas_node *sas_expander, u16 handle)
7493 {
7494 	Mpi2ExpanderPage1_t expander_pg1;
7495 	Mpi2ConfigReply_t mpi_reply;
7496 	int i;
7497 
7498 	for (i = 0 ; i < sas_expander->num_phys ; i++) {
7499 		if ((mpt3sas_config_get_expander_pg1(ioc, &mpi_reply,
7500 		    &expander_pg1, i, handle))) {
7501 			pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
7502 			    ioc->name, __FILE__, __LINE__, __func__);
7503 			return;
7504 		}
7505 
7506 		mpt3sas_transport_update_links(ioc, sas_expander->sas_address,
7507 		    le16_to_cpu(expander_pg1.AttachedDevHandle), i,
7508 		    expander_pg1.NegotiatedLinkRate >> 4);
7509 	}
7510 }
7511 
7512 /**
7513  * _scsih_scan_for_devices_after_reset - scan for devices after host reset
7514  * @ioc: per adapter object
7515  *
7516  * Return nothing.
7517  */
7518 static void
7519 _scsih_scan_for_devices_after_reset(struct MPT3SAS_ADAPTER *ioc)
7520 {
7521 	Mpi2ExpanderPage0_t expander_pg0;
7522 	Mpi2SasDevicePage0_t sas_device_pg0;
7523 	Mpi2RaidVolPage1_t volume_pg1;
7524 	Mpi2RaidVolPage0_t volume_pg0;
7525 	Mpi2RaidPhysDiskPage0_t pd_pg0;
7526 	Mpi2EventIrConfigElement_t element;
7527 	Mpi2ConfigReply_t mpi_reply;
7528 	u8 phys_disk_num;
7529 	u16 ioc_status;
7530 	u16 handle, parent_handle;
7531 	u64 sas_address;
7532 	struct _sas_device *sas_device;
7533 	struct _sas_node *expander_device;
7534 	static struct _raid_device *raid_device;
7535 	u8 retry_count;
7536 	unsigned long flags;
7537 
7538 	pr_info(MPT3SAS_FMT "scan devices: start\n", ioc->name);
7539 
7540 	_scsih_sas_host_refresh(ioc);
7541 
7542 	pr_info(MPT3SAS_FMT "\tscan devices: expanders start\n", ioc->name);
7543 
7544 	/* expanders */
7545 	handle = 0xFFFF;
7546 	while (!(mpt3sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
7547 	    MPI2_SAS_EXPAND_PGAD_FORM_GET_NEXT_HNDL, handle))) {
7548 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7549 		    MPI2_IOCSTATUS_MASK;
7550 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7551 			pr_info(MPT3SAS_FMT "\tbreak from expander scan: " \
7552 			    "ioc_status(0x%04x), loginfo(0x%08x)\n",
7553 			    ioc->name, ioc_status,
7554 			    le32_to_cpu(mpi_reply.IOCLogInfo));
7555 			break;
7556 		}
7557 		handle = le16_to_cpu(expander_pg0.DevHandle);
7558 		spin_lock_irqsave(&ioc->sas_node_lock, flags);
7559 		expander_device = mpt3sas_scsih_expander_find_by_sas_address(
7560 		    ioc, le64_to_cpu(expander_pg0.SASAddress));
7561 		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
7562 		if (expander_device)
7563 			_scsih_refresh_expander_links(ioc, expander_device,
7564 			    handle);
7565 		else {
7566 			pr_info(MPT3SAS_FMT "\tBEFORE adding expander: " \
7567 			    "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7568 			    handle, (unsigned long long)
7569 			    le64_to_cpu(expander_pg0.SASAddress));
7570 			_scsih_expander_add(ioc, handle);
7571 			pr_info(MPT3SAS_FMT "\tAFTER adding expander: " \
7572 			    "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7573 			    handle, (unsigned long long)
7574 			    le64_to_cpu(expander_pg0.SASAddress));
7575 		}
7576 	}
7577 
7578 	pr_info(MPT3SAS_FMT "\tscan devices: expanders complete\n",
7579 	    ioc->name);
7580 
7581 	if (!ioc->ir_firmware)
7582 		goto skip_to_sas;
7583 
7584 	pr_info(MPT3SAS_FMT "\tscan devices: phys disk start\n", ioc->name);
7585 
7586 	/* phys disk */
7587 	phys_disk_num = 0xFF;
7588 	while (!(mpt3sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
7589 	    &pd_pg0, MPI2_PHYSDISK_PGAD_FORM_GET_NEXT_PHYSDISKNUM,
7590 	    phys_disk_num))) {
7591 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7592 		    MPI2_IOCSTATUS_MASK;
7593 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7594 			pr_info(MPT3SAS_FMT "\tbreak from phys disk scan: "\
7595 			    "ioc_status(0x%04x), loginfo(0x%08x)\n",
7596 			    ioc->name, ioc_status,
7597 			    le32_to_cpu(mpi_reply.IOCLogInfo));
7598 			break;
7599 		}
7600 		phys_disk_num = pd_pg0.PhysDiskNum;
7601 		handle = le16_to_cpu(pd_pg0.DevHandle);
7602 		sas_device = mpt3sas_get_sdev_by_handle(ioc, handle);
7603 		if (sas_device) {
7604 			sas_device_put(sas_device);
7605 			continue;
7606 		}
7607 		if (mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7608 		    &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
7609 		    handle) != 0)
7610 			continue;
7611 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7612 		    MPI2_IOCSTATUS_MASK;
7613 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7614 			pr_info(MPT3SAS_FMT "\tbreak from phys disk scan " \
7615 			    "ioc_status(0x%04x), loginfo(0x%08x)\n",
7616 			    ioc->name, ioc_status,
7617 			    le32_to_cpu(mpi_reply.IOCLogInfo));
7618 			break;
7619 		}
7620 		parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
7621 		if (!_scsih_get_sas_address(ioc, parent_handle,
7622 		    &sas_address)) {
7623 			pr_info(MPT3SAS_FMT "\tBEFORE adding phys disk: " \
7624 			    " handle (0x%04x), sas_addr(0x%016llx)\n",
7625 			    ioc->name, handle, (unsigned long long)
7626 			    le64_to_cpu(sas_device_pg0.SASAddress));
7627 			mpt3sas_transport_update_links(ioc, sas_address,
7628 			    handle, sas_device_pg0.PhyNum,
7629 			    MPI2_SAS_NEG_LINK_RATE_1_5);
7630 			set_bit(handle, ioc->pd_handles);
7631 			retry_count = 0;
7632 			/* This will retry adding the end device.
7633 			 * _scsih_add_device() will decide on retries and
7634 			 * return "1" when it should be retried
7635 			 */
7636 			while (_scsih_add_device(ioc, handle, retry_count++,
7637 			    1)) {
7638 				ssleep(1);
7639 			}
7640 			pr_info(MPT3SAS_FMT "\tAFTER adding phys disk: " \
7641 			    " handle (0x%04x), sas_addr(0x%016llx)\n",
7642 			    ioc->name, handle, (unsigned long long)
7643 			    le64_to_cpu(sas_device_pg0.SASAddress));
7644 		}
7645 	}
7646 
7647 	pr_info(MPT3SAS_FMT "\tscan devices: phys disk complete\n",
7648 	    ioc->name);
7649 
7650 	pr_info(MPT3SAS_FMT "\tscan devices: volumes start\n", ioc->name);
7651 
7652 	/* volumes */
7653 	handle = 0xFFFF;
7654 	while (!(mpt3sas_config_get_raid_volume_pg1(ioc, &mpi_reply,
7655 	    &volume_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
7656 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7657 		    MPI2_IOCSTATUS_MASK;
7658 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7659 			pr_info(MPT3SAS_FMT "\tbreak from volume scan: " \
7660 			    "ioc_status(0x%04x), loginfo(0x%08x)\n",
7661 			    ioc->name, ioc_status,
7662 			    le32_to_cpu(mpi_reply.IOCLogInfo));
7663 			break;
7664 		}
7665 		handle = le16_to_cpu(volume_pg1.DevHandle);
7666 		spin_lock_irqsave(&ioc->raid_device_lock, flags);
7667 		raid_device = _scsih_raid_device_find_by_wwid(ioc,
7668 		    le64_to_cpu(volume_pg1.WWID));
7669 		spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
7670 		if (raid_device)
7671 			continue;
7672 		if (mpt3sas_config_get_raid_volume_pg0(ioc, &mpi_reply,
7673 		    &volume_pg0, MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
7674 		     sizeof(Mpi2RaidVolPage0_t)))
7675 			continue;
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 volume 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 		if (volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_OPTIMAL ||
7686 		    volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_ONLINE ||
7687 		    volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_DEGRADED) {
7688 			memset(&element, 0, sizeof(Mpi2EventIrConfigElement_t));
7689 			element.ReasonCode = MPI2_EVENT_IR_CHANGE_RC_ADDED;
7690 			element.VolDevHandle = volume_pg1.DevHandle;
7691 			pr_info(MPT3SAS_FMT
7692 				"\tBEFORE adding volume: handle (0x%04x)\n",
7693 				ioc->name, volume_pg1.DevHandle);
7694 			_scsih_sas_volume_add(ioc, &element);
7695 			pr_info(MPT3SAS_FMT
7696 				"\tAFTER adding volume: handle (0x%04x)\n",
7697 				ioc->name, volume_pg1.DevHandle);
7698 		}
7699 	}
7700 
7701 	pr_info(MPT3SAS_FMT "\tscan devices: volumes complete\n",
7702 	    ioc->name);
7703 
7704  skip_to_sas:
7705 
7706 	pr_info(MPT3SAS_FMT "\tscan devices: end devices start\n",
7707 	    ioc->name);
7708 
7709 	/* sas devices */
7710 	handle = 0xFFFF;
7711 	while (!(mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply,
7712 	    &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_GET_NEXT_HANDLE,
7713 	    handle))) {
7714 		ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
7715 		    MPI2_IOCSTATUS_MASK;
7716 		if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
7717 			pr_info(MPT3SAS_FMT "\tbreak from end device scan:"\
7718 			    " ioc_status(0x%04x), loginfo(0x%08x)\n",
7719 			    ioc->name, ioc_status,
7720 			    le32_to_cpu(mpi_reply.IOCLogInfo));
7721 			break;
7722 		}
7723 		handle = le16_to_cpu(sas_device_pg0.DevHandle);
7724 		if (!(_scsih_is_end_device(
7725 		    le32_to_cpu(sas_device_pg0.DeviceInfo))))
7726 			continue;
7727 		sas_device = mpt3sas_get_sdev_by_addr(ioc,
7728 		    le64_to_cpu(sas_device_pg0.SASAddress));
7729 		if (sas_device) {
7730 			sas_device_put(sas_device);
7731 			continue;
7732 		}
7733 		parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
7734 		if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address)) {
7735 			pr_info(MPT3SAS_FMT "\tBEFORE adding end device: " \
7736 			    "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7737 			    handle, (unsigned long long)
7738 			    le64_to_cpu(sas_device_pg0.SASAddress));
7739 			mpt3sas_transport_update_links(ioc, sas_address, handle,
7740 			    sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
7741 			retry_count = 0;
7742 			/* This will retry adding the end device.
7743 			 * _scsih_add_device() will decide on retries and
7744 			 * return "1" when it should be retried
7745 			 */
7746 			while (_scsih_add_device(ioc, handle, retry_count++,
7747 			    0)) {
7748 				ssleep(1);
7749 			}
7750 			pr_info(MPT3SAS_FMT "\tAFTER adding end device: " \
7751 			    "handle (0x%04x), sas_addr(0x%016llx)\n", ioc->name,
7752 			    handle, (unsigned long long)
7753 			    le64_to_cpu(sas_device_pg0.SASAddress));
7754 		}
7755 	}
7756 	pr_info(MPT3SAS_FMT "\tscan devices: end devices complete\n",
7757 	    ioc->name);
7758 
7759 	pr_info(MPT3SAS_FMT "scan devices: complete\n", ioc->name);
7760 }
7761 /**
7762  * mpt3sas_scsih_reset_handler - reset callback handler (for scsih)
7763  * @ioc: per adapter object
7764  * @reset_phase: phase
7765  *
7766  * The handler for doing any required cleanup or initialization.
7767  *
7768  * The reset phase can be MPT3_IOC_PRE_RESET, MPT3_IOC_AFTER_RESET,
7769  * MPT3_IOC_DONE_RESET
7770  *
7771  * Return nothing.
7772  */
7773 void
7774 mpt3sas_scsih_reset_handler(struct MPT3SAS_ADAPTER *ioc, int reset_phase)
7775 {
7776 	switch (reset_phase) {
7777 	case MPT3_IOC_PRE_RESET:
7778 		dtmprintk(ioc, pr_info(MPT3SAS_FMT
7779 			"%s: MPT3_IOC_PRE_RESET\n", ioc->name, __func__));
7780 		break;
7781 	case MPT3_IOC_AFTER_RESET:
7782 		dtmprintk(ioc, pr_info(MPT3SAS_FMT
7783 			"%s: MPT3_IOC_AFTER_RESET\n", ioc->name, __func__));
7784 		if (ioc->scsih_cmds.status & MPT3_CMD_PENDING) {
7785 			ioc->scsih_cmds.status |= MPT3_CMD_RESET;
7786 			mpt3sas_base_free_smid(ioc, ioc->scsih_cmds.smid);
7787 			complete(&ioc->scsih_cmds.done);
7788 		}
7789 		if (ioc->tm_cmds.status & MPT3_CMD_PENDING) {
7790 			ioc->tm_cmds.status |= MPT3_CMD_RESET;
7791 			mpt3sas_base_free_smid(ioc, ioc->tm_cmds.smid);
7792 			complete(&ioc->tm_cmds.done);
7793 		}
7794 
7795 		memset(ioc->pend_os_device_add, 0, ioc->pend_os_device_add_sz);
7796 		memset(ioc->device_remove_in_progress, 0,
7797 		       ioc->device_remove_in_progress_sz);
7798 		_scsih_fw_event_cleanup_queue(ioc);
7799 		_scsih_flush_running_cmds(ioc);
7800 		break;
7801 	case MPT3_IOC_DONE_RESET:
7802 		dtmprintk(ioc, pr_info(MPT3SAS_FMT
7803 			"%s: MPT3_IOC_DONE_RESET\n", ioc->name, __func__));
7804 		if ((!ioc->is_driver_loading) && !(disable_discovery > 0 &&
7805 		    !ioc->sas_hba.num_phys)) {
7806 			_scsih_prep_device_scan(ioc);
7807 			_scsih_search_responding_sas_devices(ioc);
7808 			_scsih_search_responding_raid_devices(ioc);
7809 			_scsih_search_responding_expanders(ioc);
7810 			_scsih_error_recovery_delete_devices(ioc);
7811 		}
7812 		break;
7813 	}
7814 }
7815 
7816 /**
7817  * _mpt3sas_fw_work - delayed task for processing firmware events
7818  * @ioc: per adapter object
7819  * @fw_event: The fw_event_work object
7820  * Context: user.
7821  *
7822  * Return nothing.
7823  */
7824 static void
7825 _mpt3sas_fw_work(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work *fw_event)
7826 {
7827 	_scsih_fw_event_del_from_list(ioc, fw_event);
7828 
7829 	/* the queue is being flushed so ignore this event */
7830 	if (ioc->remove_host || ioc->pci_error_recovery) {
7831 		fw_event_work_put(fw_event);
7832 		return;
7833 	}
7834 
7835 	switch (fw_event->event) {
7836 	case MPT3SAS_PROCESS_TRIGGER_DIAG:
7837 		mpt3sas_process_trigger_data(ioc,
7838 			(struct SL_WH_TRIGGERS_EVENT_DATA_T *)
7839 			fw_event->event_data);
7840 		break;
7841 	case MPT3SAS_REMOVE_UNRESPONDING_DEVICES:
7842 		while (scsi_host_in_recovery(ioc->shost) ||
7843 					 ioc->shost_recovery) {
7844 			/*
7845 			 * If we're unloading, bail. Otherwise, this can become
7846 			 * an infinite loop.
7847 			 */
7848 			if (ioc->remove_host)
7849 				goto out;
7850 			ssleep(1);
7851 		}
7852 		_scsih_remove_unresponding_sas_devices(ioc);
7853 		_scsih_scan_for_devices_after_reset(ioc);
7854 		break;
7855 	case MPT3SAS_PORT_ENABLE_COMPLETE:
7856 		ioc->start_scan = 0;
7857 	if (missing_delay[0] != -1 && missing_delay[1] != -1)
7858 			mpt3sas_base_update_missing_delay(ioc, missing_delay[0],
7859 			    missing_delay[1]);
7860 		dewtprintk(ioc, pr_info(MPT3SAS_FMT
7861 			"port enable: complete from worker thread\n",
7862 			ioc->name));
7863 		break;
7864 	case MPT3SAS_TURN_ON_PFA_LED:
7865 		_scsih_turn_on_pfa_led(ioc, fw_event->device_handle);
7866 		break;
7867 	case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
7868 		_scsih_sas_topology_change_event(ioc, fw_event);
7869 		break;
7870 	case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
7871 		_scsih_sas_device_status_change_event(ioc, fw_event);
7872 		break;
7873 	case MPI2_EVENT_SAS_DISCOVERY:
7874 		_scsih_sas_discovery_event(ioc, fw_event);
7875 		break;
7876 	case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
7877 		_scsih_sas_broadcast_primitive_event(ioc, fw_event);
7878 		break;
7879 	case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
7880 		_scsih_sas_enclosure_dev_status_change_event(ioc,
7881 		    fw_event);
7882 		break;
7883 	case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
7884 		_scsih_sas_ir_config_change_event(ioc, fw_event);
7885 		break;
7886 	case MPI2_EVENT_IR_VOLUME:
7887 		_scsih_sas_ir_volume_event(ioc, fw_event);
7888 		break;
7889 	case MPI2_EVENT_IR_PHYSICAL_DISK:
7890 		_scsih_sas_ir_physical_disk_event(ioc, fw_event);
7891 		break;
7892 	case MPI2_EVENT_IR_OPERATION_STATUS:
7893 		_scsih_sas_ir_operation_status_event(ioc, fw_event);
7894 		break;
7895 	}
7896 out:
7897 	fw_event_work_put(fw_event);
7898 }
7899 
7900 /**
7901  * _firmware_event_work
7902  * @ioc: per adapter object
7903  * @work: The fw_event_work object
7904  * Context: user.
7905  *
7906  * wrappers for the work thread handling firmware events
7907  *
7908  * Return nothing.
7909  */
7910 
7911 static void
7912 _firmware_event_work(struct work_struct *work)
7913 {
7914 	struct fw_event_work *fw_event = container_of(work,
7915 	    struct fw_event_work, work);
7916 
7917 	_mpt3sas_fw_work(fw_event->ioc, fw_event);
7918 }
7919 
7920 /**
7921  * mpt3sas_scsih_event_callback - firmware event handler (called at ISR time)
7922  * @ioc: per adapter object
7923  * @msix_index: MSIX table index supplied by the OS
7924  * @reply: reply message frame(lower 32bit addr)
7925  * Context: interrupt.
7926  *
7927  * This function merely adds a new work task into ioc->firmware_event_thread.
7928  * The tasks are worked from _firmware_event_work in user context.
7929  *
7930  * Return 1 meaning mf should be freed from _base_interrupt
7931  *        0 means the mf is freed from this function.
7932  */
7933 u8
7934 mpt3sas_scsih_event_callback(struct MPT3SAS_ADAPTER *ioc, u8 msix_index,
7935 	u32 reply)
7936 {
7937 	struct fw_event_work *fw_event;
7938 	Mpi2EventNotificationReply_t *mpi_reply;
7939 	u16 event;
7940 	u16 sz;
7941 	Mpi26EventDataActiveCableExcept_t *ActiveCableEventData;
7942 
7943 	/* events turned off due to host reset or driver unloading */
7944 	if (ioc->remove_host || ioc->pci_error_recovery)
7945 		return 1;
7946 
7947 	mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
7948 
7949 	if (unlikely(!mpi_reply)) {
7950 		pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
7951 		    ioc->name, __FILE__, __LINE__, __func__);
7952 		return 1;
7953 	}
7954 
7955 	event = le16_to_cpu(mpi_reply->Event);
7956 
7957 	if (event != MPI2_EVENT_LOG_ENTRY_ADDED)
7958 		mpt3sas_trigger_event(ioc, event, 0);
7959 
7960 	switch (event) {
7961 	/* handle these */
7962 	case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
7963 	{
7964 		Mpi2EventDataSasBroadcastPrimitive_t *baen_data =
7965 		    (Mpi2EventDataSasBroadcastPrimitive_t *)
7966 		    mpi_reply->EventData;
7967 
7968 		if (baen_data->Primitive !=
7969 		    MPI2_EVENT_PRIMITIVE_ASYNCHRONOUS_EVENT)
7970 			return 1;
7971 
7972 		if (ioc->broadcast_aen_busy) {
7973 			ioc->broadcast_aen_pending++;
7974 			return 1;
7975 		} else
7976 			ioc->broadcast_aen_busy = 1;
7977 		break;
7978 	}
7979 
7980 	case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
7981 		_scsih_check_topo_delete_events(ioc,
7982 		    (Mpi2EventDataSasTopologyChangeList_t *)
7983 		    mpi_reply->EventData);
7984 		break;
7985 	case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
7986 		_scsih_check_ir_config_unhide_events(ioc,
7987 		    (Mpi2EventDataIrConfigChangeList_t *)
7988 		    mpi_reply->EventData);
7989 		break;
7990 	case MPI2_EVENT_IR_VOLUME:
7991 		_scsih_check_volume_delete_events(ioc,
7992 		    (Mpi2EventDataIrVolume_t *)
7993 		    mpi_reply->EventData);
7994 		break;
7995 	case MPI2_EVENT_LOG_ENTRY_ADDED:
7996 	{
7997 		Mpi2EventDataLogEntryAdded_t *log_entry;
7998 		u32 *log_code;
7999 
8000 		if (!ioc->is_warpdrive)
8001 			break;
8002 
8003 		log_entry = (Mpi2EventDataLogEntryAdded_t *)
8004 		    mpi_reply->EventData;
8005 		log_code = (u32 *)log_entry->LogData;
8006 
8007 		if (le16_to_cpu(log_entry->LogEntryQualifier)
8008 		    != MPT2_WARPDRIVE_LOGENTRY)
8009 			break;
8010 
8011 		switch (le32_to_cpu(*log_code)) {
8012 		case MPT2_WARPDRIVE_LC_SSDT:
8013 			pr_warn(MPT3SAS_FMT "WarpDrive Warning: "
8014 			    "IO Throttling has occurred in the WarpDrive "
8015 			    "subsystem. Check WarpDrive documentation for "
8016 			    "additional details.\n", ioc->name);
8017 			break;
8018 		case MPT2_WARPDRIVE_LC_SSDLW:
8019 			pr_warn(MPT3SAS_FMT "WarpDrive Warning: "
8020 			    "Program/Erase Cycles for the WarpDrive subsystem "
8021 			    "in degraded range. Check WarpDrive documentation "
8022 			    "for additional details.\n", ioc->name);
8023 			break;
8024 		case MPT2_WARPDRIVE_LC_SSDLF:
8025 			pr_err(MPT3SAS_FMT "WarpDrive Fatal Error: "
8026 			    "There are no Program/Erase Cycles for the "
8027 			    "WarpDrive subsystem. The storage device will be "
8028 			    "in read-only mode. Check WarpDrive documentation "
8029 			    "for additional details.\n", ioc->name);
8030 			break;
8031 		case MPT2_WARPDRIVE_LC_BRMF:
8032 			pr_err(MPT3SAS_FMT "WarpDrive Fatal Error: "
8033 			    "The Backup Rail Monitor has failed on the "
8034 			    "WarpDrive subsystem. Check WarpDrive "
8035 			    "documentation for additional details.\n",
8036 			    ioc->name);
8037 			break;
8038 		}
8039 
8040 		break;
8041 	}
8042 	case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
8043 	case MPI2_EVENT_IR_OPERATION_STATUS:
8044 	case MPI2_EVENT_SAS_DISCOVERY:
8045 	case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
8046 	case MPI2_EVENT_IR_PHYSICAL_DISK:
8047 		break;
8048 
8049 	case MPI2_EVENT_TEMP_THRESHOLD:
8050 		_scsih_temp_threshold_events(ioc,
8051 			(Mpi2EventDataTemperature_t *)
8052 			mpi_reply->EventData);
8053 		break;
8054 	case MPI2_EVENT_ACTIVE_CABLE_EXCEPTION:
8055 		ActiveCableEventData =
8056 		    (Mpi26EventDataActiveCableExcept_t *) mpi_reply->EventData;
8057 		switch (ActiveCableEventData->ReasonCode) {
8058 		case MPI26_EVENT_ACTIVE_CABLE_INSUFFICIENT_POWER:
8059 			pr_notice(MPT3SAS_FMT "Receptacle ID %d: This active cable"
8060 				  " requires %d mW of power\n", ioc->name,
8061 			     ActiveCableEventData->ReceptacleID,
8062 			     ActiveCableEventData->ActiveCablePowerRequirement);
8063 			pr_notice(MPT3SAS_FMT "Receptacle ID %d: Devices connected"
8064 				  " to this active cable will not be seen\n",
8065 			     ioc->name, ActiveCableEventData->ReceptacleID);
8066 			break;
8067 
8068 		case MPI26_EVENT_ACTIVE_CABLE_DEGRADED:
8069 			pr_notice(MPT3SAS_FMT "ReceptacleID %d: This cable",
8070 				ioc->name, ActiveCableEventData->ReceptacleID);
8071 			pr_notice(" is not running at an optimal speed(12 Gb/s)\n");
8072 			break;
8073 		}
8074 
8075 		break;
8076 
8077 	default: /* ignore the rest */
8078 		return 1;
8079 	}
8080 
8081 	sz = le16_to_cpu(mpi_reply->EventDataLength) * 4;
8082 	fw_event = alloc_fw_event_work(sz);
8083 	if (!fw_event) {
8084 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8085 		    ioc->name, __FILE__, __LINE__, __func__);
8086 		return 1;
8087 	}
8088 
8089 	memcpy(fw_event->event_data, mpi_reply->EventData, sz);
8090 	fw_event->ioc = ioc;
8091 	fw_event->VF_ID = mpi_reply->VF_ID;
8092 	fw_event->VP_ID = mpi_reply->VP_ID;
8093 	fw_event->event = event;
8094 	_scsih_fw_event_add(ioc, fw_event);
8095 	fw_event_work_put(fw_event);
8096 	return 1;
8097 }
8098 
8099 /**
8100  * _scsih_expander_node_remove - removing expander device from list.
8101  * @ioc: per adapter object
8102  * @sas_expander: the sas_device object
8103  * Context: Calling function should acquire ioc->sas_node_lock.
8104  *
8105  * Removing object and freeing associated memory from the
8106  * ioc->sas_expander_list.
8107  *
8108  * Return nothing.
8109  */
8110 static void
8111 _scsih_expander_node_remove(struct MPT3SAS_ADAPTER *ioc,
8112 	struct _sas_node *sas_expander)
8113 {
8114 	struct _sas_port *mpt3sas_port, *next;
8115 
8116 	/* remove sibling ports attached to this expander */
8117 	list_for_each_entry_safe(mpt3sas_port, next,
8118 	   &sas_expander->sas_port_list, port_list) {
8119 		if (ioc->shost_recovery)
8120 			return;
8121 		if (mpt3sas_port->remote_identify.device_type ==
8122 		    SAS_END_DEVICE)
8123 			mpt3sas_device_remove_by_sas_address(ioc,
8124 			    mpt3sas_port->remote_identify.sas_address);
8125 		else if (mpt3sas_port->remote_identify.device_type ==
8126 		    SAS_EDGE_EXPANDER_DEVICE ||
8127 		    mpt3sas_port->remote_identify.device_type ==
8128 		    SAS_FANOUT_EXPANDER_DEVICE)
8129 			mpt3sas_expander_remove(ioc,
8130 			    mpt3sas_port->remote_identify.sas_address);
8131 	}
8132 
8133 	mpt3sas_transport_port_remove(ioc, sas_expander->sas_address,
8134 	    sas_expander->sas_address_parent);
8135 
8136 	pr_info(MPT3SAS_FMT
8137 		"expander_remove: handle(0x%04x), sas_addr(0x%016llx)\n",
8138 		ioc->name,
8139 	    sas_expander->handle, (unsigned long long)
8140 	    sas_expander->sas_address);
8141 
8142 	kfree(sas_expander->phy);
8143 	kfree(sas_expander);
8144 }
8145 
8146 /**
8147  * _scsih_ir_shutdown - IR shutdown notification
8148  * @ioc: per adapter object
8149  *
8150  * Sending RAID Action to alert the Integrated RAID subsystem of the IOC that
8151  * the host system is shutting down.
8152  *
8153  * Return nothing.
8154  */
8155 static void
8156 _scsih_ir_shutdown(struct MPT3SAS_ADAPTER *ioc)
8157 {
8158 	Mpi2RaidActionRequest_t *mpi_request;
8159 	Mpi2RaidActionReply_t *mpi_reply;
8160 	u16 smid;
8161 
8162 	/* is IR firmware build loaded ? */
8163 	if (!ioc->ir_firmware)
8164 		return;
8165 
8166 	/* are there any volumes ? */
8167 	if (list_empty(&ioc->raid_device_list))
8168 		return;
8169 
8170 	mutex_lock(&ioc->scsih_cmds.mutex);
8171 
8172 	if (ioc->scsih_cmds.status != MPT3_CMD_NOT_USED) {
8173 		pr_err(MPT3SAS_FMT "%s: scsih_cmd in use\n",
8174 		    ioc->name, __func__);
8175 		goto out;
8176 	}
8177 	ioc->scsih_cmds.status = MPT3_CMD_PENDING;
8178 
8179 	smid = mpt3sas_base_get_smid(ioc, ioc->scsih_cb_idx);
8180 	if (!smid) {
8181 		pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
8182 		    ioc->name, __func__);
8183 		ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
8184 		goto out;
8185 	}
8186 
8187 	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
8188 	ioc->scsih_cmds.smid = smid;
8189 	memset(mpi_request, 0, sizeof(Mpi2RaidActionRequest_t));
8190 
8191 	mpi_request->Function = MPI2_FUNCTION_RAID_ACTION;
8192 	mpi_request->Action = MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED;
8193 
8194 	if (!ioc->hide_ir_msg)
8195 		pr_info(MPT3SAS_FMT "IR shutdown (sending)\n", ioc->name);
8196 	init_completion(&ioc->scsih_cmds.done);
8197 	ioc->put_smid_default(ioc, smid);
8198 	wait_for_completion_timeout(&ioc->scsih_cmds.done, 10*HZ);
8199 
8200 	if (!(ioc->scsih_cmds.status & MPT3_CMD_COMPLETE)) {
8201 		pr_err(MPT3SAS_FMT "%s: timeout\n",
8202 		    ioc->name, __func__);
8203 		goto out;
8204 	}
8205 
8206 	if (ioc->scsih_cmds.status & MPT3_CMD_REPLY_VALID) {
8207 		mpi_reply = ioc->scsih_cmds.reply;
8208 		if (!ioc->hide_ir_msg)
8209 			pr_info(MPT3SAS_FMT "IR shutdown "
8210 			   "(complete): ioc_status(0x%04x), loginfo(0x%08x)\n",
8211 			    ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
8212 			    le32_to_cpu(mpi_reply->IOCLogInfo));
8213 	}
8214 
8215  out:
8216 	ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
8217 	mutex_unlock(&ioc->scsih_cmds.mutex);
8218 }
8219 
8220 /**
8221  * scsih_remove - detach and remove add host
8222  * @pdev: PCI device struct
8223  *
8224  * Routine called when unloading the driver.
8225  * Return nothing.
8226  */
8227 static void scsih_remove(struct pci_dev *pdev)
8228 {
8229 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
8230 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8231 	struct _sas_port *mpt3sas_port, *next_port;
8232 	struct _raid_device *raid_device, *next;
8233 	struct MPT3SAS_TARGET *sas_target_priv_data;
8234 	struct workqueue_struct	*wq;
8235 	unsigned long flags;
8236 
8237 	ioc->remove_host = 1;
8238 	_scsih_fw_event_cleanup_queue(ioc);
8239 
8240 	spin_lock_irqsave(&ioc->fw_event_lock, flags);
8241 	wq = ioc->firmware_event_thread;
8242 	ioc->firmware_event_thread = NULL;
8243 	spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
8244 	if (wq)
8245 		destroy_workqueue(wq);
8246 
8247 	/* release all the volumes */
8248 	_scsih_ir_shutdown(ioc);
8249 	list_for_each_entry_safe(raid_device, next, &ioc->raid_device_list,
8250 	    list) {
8251 		if (raid_device->starget) {
8252 			sas_target_priv_data =
8253 			    raid_device->starget->hostdata;
8254 			sas_target_priv_data->deleted = 1;
8255 			scsi_remove_target(&raid_device->starget->dev);
8256 		}
8257 		pr_info(MPT3SAS_FMT "removing handle(0x%04x), wwid(0x%016llx)\n",
8258 			ioc->name,  raid_device->handle,
8259 		    (unsigned long long) raid_device->wwid);
8260 		_scsih_raid_device_remove(ioc, raid_device);
8261 	}
8262 
8263 	/* free ports attached to the sas_host */
8264 	list_for_each_entry_safe(mpt3sas_port, next_port,
8265 	   &ioc->sas_hba.sas_port_list, port_list) {
8266 		if (mpt3sas_port->remote_identify.device_type ==
8267 		    SAS_END_DEVICE)
8268 			mpt3sas_device_remove_by_sas_address(ioc,
8269 			    mpt3sas_port->remote_identify.sas_address);
8270 		else if (mpt3sas_port->remote_identify.device_type ==
8271 		    SAS_EDGE_EXPANDER_DEVICE ||
8272 		    mpt3sas_port->remote_identify.device_type ==
8273 		    SAS_FANOUT_EXPANDER_DEVICE)
8274 			mpt3sas_expander_remove(ioc,
8275 			    mpt3sas_port->remote_identify.sas_address);
8276 	}
8277 
8278 	/* free phys attached to the sas_host */
8279 	if (ioc->sas_hba.num_phys) {
8280 		kfree(ioc->sas_hba.phy);
8281 		ioc->sas_hba.phy = NULL;
8282 		ioc->sas_hba.num_phys = 0;
8283 	}
8284 
8285 	sas_remove_host(shost);
8286 	mpt3sas_base_detach(ioc);
8287 	spin_lock(&gioc_lock);
8288 	list_del(&ioc->list);
8289 	spin_unlock(&gioc_lock);
8290 	scsi_host_put(shost);
8291 }
8292 
8293 /**
8294  * scsih_shutdown - routine call during system shutdown
8295  * @pdev: PCI device struct
8296  *
8297  * Return nothing.
8298  */
8299 static void
8300 scsih_shutdown(struct pci_dev *pdev)
8301 {
8302 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
8303 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8304 	struct workqueue_struct	*wq;
8305 	unsigned long flags;
8306 
8307 	ioc->remove_host = 1;
8308 	_scsih_fw_event_cleanup_queue(ioc);
8309 
8310 	spin_lock_irqsave(&ioc->fw_event_lock, flags);
8311 	wq = ioc->firmware_event_thread;
8312 	ioc->firmware_event_thread = NULL;
8313 	spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
8314 	if (wq)
8315 		destroy_workqueue(wq);
8316 
8317 	_scsih_ir_shutdown(ioc);
8318 	mpt3sas_base_detach(ioc);
8319 }
8320 
8321 
8322 /**
8323  * _scsih_probe_boot_devices - reports 1st device
8324  * @ioc: per adapter object
8325  *
8326  * If specified in bios page 2, this routine reports the 1st
8327  * device scsi-ml or sas transport for persistent boot device
8328  * purposes.  Please refer to function _scsih_determine_boot_device()
8329  */
8330 static void
8331 _scsih_probe_boot_devices(struct MPT3SAS_ADAPTER *ioc)
8332 {
8333 	u8 is_raid;
8334 	void *device;
8335 	struct _sas_device *sas_device;
8336 	struct _raid_device *raid_device;
8337 	u16 handle;
8338 	u64 sas_address_parent;
8339 	u64 sas_address;
8340 	unsigned long flags;
8341 	int rc;
8342 
8343 	 /* no Bios, return immediately */
8344 	if (!ioc->bios_pg3.BiosVersion)
8345 		return;
8346 
8347 	device = NULL;
8348 	is_raid = 0;
8349 	if (ioc->req_boot_device.device) {
8350 		device =  ioc->req_boot_device.device;
8351 		is_raid = ioc->req_boot_device.is_raid;
8352 	} else if (ioc->req_alt_boot_device.device) {
8353 		device =  ioc->req_alt_boot_device.device;
8354 		is_raid = ioc->req_alt_boot_device.is_raid;
8355 	} else if (ioc->current_boot_device.device) {
8356 		device =  ioc->current_boot_device.device;
8357 		is_raid = ioc->current_boot_device.is_raid;
8358 	}
8359 
8360 	if (!device)
8361 		return;
8362 
8363 	if (is_raid) {
8364 		raid_device = device;
8365 		rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
8366 		    raid_device->id, 0);
8367 		if (rc)
8368 			_scsih_raid_device_remove(ioc, raid_device);
8369 	} else {
8370 		spin_lock_irqsave(&ioc->sas_device_lock, flags);
8371 		sas_device = device;
8372 		handle = sas_device->handle;
8373 		sas_address_parent = sas_device->sas_address_parent;
8374 		sas_address = sas_device->sas_address;
8375 		list_move_tail(&sas_device->list, &ioc->sas_device_list);
8376 		spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8377 
8378 		if (ioc->hide_drives)
8379 			return;
8380 		if (!mpt3sas_transport_port_add(ioc, handle,
8381 		    sas_address_parent)) {
8382 			_scsih_sas_device_remove(ioc, sas_device);
8383 		} else if (!sas_device->starget) {
8384 			if (!ioc->is_driver_loading) {
8385 				mpt3sas_transport_port_remove(ioc,
8386 				    sas_address,
8387 				    sas_address_parent);
8388 				_scsih_sas_device_remove(ioc, sas_device);
8389 			}
8390 		}
8391 	}
8392 }
8393 
8394 /**
8395  * _scsih_probe_raid - reporting raid volumes to scsi-ml
8396  * @ioc: per adapter object
8397  *
8398  * Called during initial loading of the driver.
8399  */
8400 static void
8401 _scsih_probe_raid(struct MPT3SAS_ADAPTER *ioc)
8402 {
8403 	struct _raid_device *raid_device, *raid_next;
8404 	int rc;
8405 
8406 	list_for_each_entry_safe(raid_device, raid_next,
8407 	    &ioc->raid_device_list, list) {
8408 		if (raid_device->starget)
8409 			continue;
8410 		rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
8411 		    raid_device->id, 0);
8412 		if (rc)
8413 			_scsih_raid_device_remove(ioc, raid_device);
8414 	}
8415 }
8416 
8417 static struct _sas_device *get_next_sas_device(struct MPT3SAS_ADAPTER *ioc)
8418 {
8419 	struct _sas_device *sas_device = NULL;
8420 	unsigned long flags;
8421 
8422 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
8423 	if (!list_empty(&ioc->sas_device_init_list)) {
8424 		sas_device = list_first_entry(&ioc->sas_device_init_list,
8425 				struct _sas_device, list);
8426 		sas_device_get(sas_device);
8427 	}
8428 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8429 
8430 	return sas_device;
8431 }
8432 
8433 static void sas_device_make_active(struct MPT3SAS_ADAPTER *ioc,
8434 		struct _sas_device *sas_device)
8435 {
8436 	unsigned long flags;
8437 
8438 	spin_lock_irqsave(&ioc->sas_device_lock, flags);
8439 
8440 	/*
8441 	 * Since we dropped the lock during the call to port_add(), we need to
8442 	 * be careful here that somebody else didn't move or delete this item
8443 	 * while we were busy with other things.
8444 	 *
8445 	 * If it was on the list, we need a put() for the reference the list
8446 	 * had. Either way, we need a get() for the destination list.
8447 	 */
8448 	if (!list_empty(&sas_device->list)) {
8449 		list_del_init(&sas_device->list);
8450 		sas_device_put(sas_device);
8451 	}
8452 
8453 	sas_device_get(sas_device);
8454 	list_add_tail(&sas_device->list, &ioc->sas_device_list);
8455 
8456 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
8457 }
8458 
8459 /**
8460  * _scsih_probe_sas - reporting sas devices to sas transport
8461  * @ioc: per adapter object
8462  *
8463  * Called during initial loading of the driver.
8464  */
8465 static void
8466 _scsih_probe_sas(struct MPT3SAS_ADAPTER *ioc)
8467 {
8468 	struct _sas_device *sas_device;
8469 
8470 	if (ioc->hide_drives)
8471 		return;
8472 
8473 	while ((sas_device = get_next_sas_device(ioc))) {
8474 		if (!mpt3sas_transport_port_add(ioc, sas_device->handle,
8475 		    sas_device->sas_address_parent)) {
8476 			_scsih_sas_device_remove(ioc, sas_device);
8477 			sas_device_put(sas_device);
8478 			continue;
8479 		} else if (!sas_device->starget) {
8480 			/*
8481 			 * When asyn scanning is enabled, its not possible to
8482 			 * remove devices while scanning is turned on due to an
8483 			 * oops in scsi_sysfs_add_sdev()->add_device()->
8484 			 * sysfs_addrm_start()
8485 			 */
8486 			if (!ioc->is_driver_loading) {
8487 				mpt3sas_transport_port_remove(ioc,
8488 				    sas_device->sas_address,
8489 				    sas_device->sas_address_parent);
8490 				_scsih_sas_device_remove(ioc, sas_device);
8491 				sas_device_put(sas_device);
8492 				continue;
8493 			}
8494 		}
8495 		sas_device_make_active(ioc, sas_device);
8496 		sas_device_put(sas_device);
8497 	}
8498 }
8499 
8500 /**
8501  * _scsih_probe_devices - probing for devices
8502  * @ioc: per adapter object
8503  *
8504  * Called during initial loading of the driver.
8505  */
8506 static void
8507 _scsih_probe_devices(struct MPT3SAS_ADAPTER *ioc)
8508 {
8509 	u16 volume_mapping_flags;
8510 
8511 	if (!(ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR))
8512 		return;  /* return when IOC doesn't support initiator mode */
8513 
8514 	_scsih_probe_boot_devices(ioc);
8515 
8516 	if (ioc->ir_firmware) {
8517 		volume_mapping_flags =
8518 		    le16_to_cpu(ioc->ioc_pg8.IRVolumeMappingFlags) &
8519 		    MPI2_IOCPAGE8_IRFLAGS_MASK_VOLUME_MAPPING_MODE;
8520 		if (volume_mapping_flags ==
8521 		    MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING) {
8522 			_scsih_probe_raid(ioc);
8523 			_scsih_probe_sas(ioc);
8524 		} else {
8525 			_scsih_probe_sas(ioc);
8526 			_scsih_probe_raid(ioc);
8527 		}
8528 	} else
8529 		_scsih_probe_sas(ioc);
8530 }
8531 
8532 /**
8533  * scsih_scan_start - scsi lld callback for .scan_start
8534  * @shost: SCSI host pointer
8535  *
8536  * The shost has the ability to discover targets on its own instead
8537  * of scanning the entire bus.  In our implemention, we will kick off
8538  * firmware discovery.
8539  */
8540 static void
8541 scsih_scan_start(struct Scsi_Host *shost)
8542 {
8543 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8544 	int rc;
8545 	if (diag_buffer_enable != -1 && diag_buffer_enable != 0)
8546 		mpt3sas_enable_diag_buffer(ioc, diag_buffer_enable);
8547 
8548 	if (disable_discovery > 0)
8549 		return;
8550 
8551 	ioc->start_scan = 1;
8552 	rc = mpt3sas_port_enable(ioc);
8553 
8554 	if (rc != 0)
8555 		pr_info(MPT3SAS_FMT "port enable: FAILED\n", ioc->name);
8556 }
8557 
8558 /**
8559  * scsih_scan_finished - scsi lld callback for .scan_finished
8560  * @shost: SCSI host pointer
8561  * @time: elapsed time of the scan in jiffies
8562  *
8563  * This function will be called periodicallyn until it returns 1 with the
8564  * scsi_host and the elapsed time of the scan in jiffies. In our implemention,
8565  * we wait for firmware discovery to complete, then return 1.
8566  */
8567 static int
8568 scsih_scan_finished(struct Scsi_Host *shost, unsigned long time)
8569 {
8570 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8571 
8572 	if (disable_discovery > 0) {
8573 		ioc->is_driver_loading = 0;
8574 		ioc->wait_for_discovery_to_complete = 0;
8575 		return 1;
8576 	}
8577 
8578 	if (time >= (300 * HZ)) {
8579 		ioc->base_cmds.status = MPT3_CMD_NOT_USED;
8580 		pr_info(MPT3SAS_FMT
8581 			"port enable: FAILED with timeout (timeout=300s)\n",
8582 			ioc->name);
8583 		ioc->is_driver_loading = 0;
8584 		return 1;
8585 	}
8586 
8587 	if (ioc->start_scan)
8588 		return 0;
8589 
8590 	if (ioc->start_scan_failed) {
8591 		pr_info(MPT3SAS_FMT
8592 			"port enable: FAILED with (ioc_status=0x%08x)\n",
8593 			ioc->name, ioc->start_scan_failed);
8594 		ioc->is_driver_loading = 0;
8595 		ioc->wait_for_discovery_to_complete = 0;
8596 		ioc->remove_host = 1;
8597 		return 1;
8598 	}
8599 
8600 	pr_info(MPT3SAS_FMT "port enable: SUCCESS\n", ioc->name);
8601 	ioc->base_cmds.status = MPT3_CMD_NOT_USED;
8602 
8603 	if (ioc->wait_for_discovery_to_complete) {
8604 		ioc->wait_for_discovery_to_complete = 0;
8605 		_scsih_probe_devices(ioc);
8606 	}
8607 	mpt3sas_base_start_watchdog(ioc);
8608 	ioc->is_driver_loading = 0;
8609 	return 1;
8610 }
8611 
8612 /* shost template for SAS 2.0 HBA devices */
8613 static struct scsi_host_template mpt2sas_driver_template = {
8614 	.module				= THIS_MODULE,
8615 	.name				= "Fusion MPT SAS Host",
8616 	.proc_name			= MPT2SAS_DRIVER_NAME,
8617 	.queuecommand			= scsih_qcmd,
8618 	.target_alloc			= scsih_target_alloc,
8619 	.slave_alloc			= scsih_slave_alloc,
8620 	.slave_configure		= scsih_slave_configure,
8621 	.target_destroy			= scsih_target_destroy,
8622 	.slave_destroy			= scsih_slave_destroy,
8623 	.scan_finished			= scsih_scan_finished,
8624 	.scan_start			= scsih_scan_start,
8625 	.change_queue_depth		= scsih_change_queue_depth,
8626 	.eh_abort_handler		= scsih_abort,
8627 	.eh_device_reset_handler	= scsih_dev_reset,
8628 	.eh_target_reset_handler	= scsih_target_reset,
8629 	.eh_host_reset_handler		= scsih_host_reset,
8630 	.bios_param			= scsih_bios_param,
8631 	.can_queue			= 1,
8632 	.this_id			= -1,
8633 	.sg_tablesize			= MPT2SAS_SG_DEPTH,
8634 	.max_sectors			= 32767,
8635 	.cmd_per_lun			= 7,
8636 	.use_clustering			= ENABLE_CLUSTERING,
8637 	.shost_attrs			= mpt3sas_host_attrs,
8638 	.sdev_attrs			= mpt3sas_dev_attrs,
8639 	.track_queue_depth		= 1,
8640 };
8641 
8642 /* raid transport support for SAS 2.0 HBA devices */
8643 static struct raid_function_template mpt2sas_raid_functions = {
8644 	.cookie		= &mpt2sas_driver_template,
8645 	.is_raid	= scsih_is_raid,
8646 	.get_resync	= scsih_get_resync,
8647 	.get_state	= scsih_get_state,
8648 };
8649 
8650 /* shost template for SAS 3.0 HBA devices */
8651 static struct scsi_host_template mpt3sas_driver_template = {
8652 	.module				= THIS_MODULE,
8653 	.name				= "Fusion MPT SAS Host",
8654 	.proc_name			= MPT3SAS_DRIVER_NAME,
8655 	.queuecommand			= scsih_qcmd,
8656 	.target_alloc			= scsih_target_alloc,
8657 	.slave_alloc			= scsih_slave_alloc,
8658 	.slave_configure		= scsih_slave_configure,
8659 	.target_destroy			= scsih_target_destroy,
8660 	.slave_destroy			= scsih_slave_destroy,
8661 	.scan_finished			= scsih_scan_finished,
8662 	.scan_start			= scsih_scan_start,
8663 	.change_queue_depth		= scsih_change_queue_depth,
8664 	.eh_abort_handler		= scsih_abort,
8665 	.eh_device_reset_handler	= scsih_dev_reset,
8666 	.eh_target_reset_handler	= scsih_target_reset,
8667 	.eh_host_reset_handler		= scsih_host_reset,
8668 	.bios_param			= scsih_bios_param,
8669 	.can_queue			= 1,
8670 	.this_id			= -1,
8671 	.sg_tablesize			= MPT3SAS_SG_DEPTH,
8672 	.max_sectors			= 32767,
8673 	.cmd_per_lun			= 7,
8674 	.use_clustering			= ENABLE_CLUSTERING,
8675 	.shost_attrs			= mpt3sas_host_attrs,
8676 	.sdev_attrs			= mpt3sas_dev_attrs,
8677 	.track_queue_depth		= 1,
8678 };
8679 
8680 /* raid transport support for SAS 3.0 HBA devices */
8681 static struct raid_function_template mpt3sas_raid_functions = {
8682 	.cookie		= &mpt3sas_driver_template,
8683 	.is_raid	= scsih_is_raid,
8684 	.get_resync	= scsih_get_resync,
8685 	.get_state	= scsih_get_state,
8686 };
8687 
8688 /**
8689  * _scsih_determine_hba_mpi_version - determine in which MPI version class
8690  *					this device belongs to.
8691  * @pdev: PCI device struct
8692  *
8693  * return MPI2_VERSION for SAS 2.0 HBA devices,
8694  *	MPI25_VERSION for SAS 3.0 HBA devices, and
8695  *	MPI26 VERSION for Cutlass & Invader SAS 3.0 HBA devices
8696  */
8697 static u16
8698 _scsih_determine_hba_mpi_version(struct pci_dev *pdev)
8699 {
8700 
8701 	switch (pdev->device) {
8702 	case MPI2_MFGPAGE_DEVID_SSS6200:
8703 	case MPI2_MFGPAGE_DEVID_SAS2004:
8704 	case MPI2_MFGPAGE_DEVID_SAS2008:
8705 	case MPI2_MFGPAGE_DEVID_SAS2108_1:
8706 	case MPI2_MFGPAGE_DEVID_SAS2108_2:
8707 	case MPI2_MFGPAGE_DEVID_SAS2108_3:
8708 	case MPI2_MFGPAGE_DEVID_SAS2116_1:
8709 	case MPI2_MFGPAGE_DEVID_SAS2116_2:
8710 	case MPI2_MFGPAGE_DEVID_SAS2208_1:
8711 	case MPI2_MFGPAGE_DEVID_SAS2208_2:
8712 	case MPI2_MFGPAGE_DEVID_SAS2208_3:
8713 	case MPI2_MFGPAGE_DEVID_SAS2208_4:
8714 	case MPI2_MFGPAGE_DEVID_SAS2208_5:
8715 	case MPI2_MFGPAGE_DEVID_SAS2208_6:
8716 	case MPI2_MFGPAGE_DEVID_SAS2308_1:
8717 	case MPI2_MFGPAGE_DEVID_SAS2308_2:
8718 	case MPI2_MFGPAGE_DEVID_SAS2308_3:
8719 		return MPI2_VERSION;
8720 	case MPI25_MFGPAGE_DEVID_SAS3004:
8721 	case MPI25_MFGPAGE_DEVID_SAS3008:
8722 	case MPI25_MFGPAGE_DEVID_SAS3108_1:
8723 	case MPI25_MFGPAGE_DEVID_SAS3108_2:
8724 	case MPI25_MFGPAGE_DEVID_SAS3108_5:
8725 	case MPI25_MFGPAGE_DEVID_SAS3108_6:
8726 		return MPI25_VERSION;
8727 	case MPI26_MFGPAGE_DEVID_SAS3216:
8728 	case MPI26_MFGPAGE_DEVID_SAS3224:
8729 	case MPI26_MFGPAGE_DEVID_SAS3316_1:
8730 	case MPI26_MFGPAGE_DEVID_SAS3316_2:
8731 	case MPI26_MFGPAGE_DEVID_SAS3316_3:
8732 	case MPI26_MFGPAGE_DEVID_SAS3316_4:
8733 	case MPI26_MFGPAGE_DEVID_SAS3324_1:
8734 	case MPI26_MFGPAGE_DEVID_SAS3324_2:
8735 	case MPI26_MFGPAGE_DEVID_SAS3324_3:
8736 	case MPI26_MFGPAGE_DEVID_SAS3324_4:
8737 	case MPI26_MFGPAGE_DEVID_SAS3508:
8738 	case MPI26_MFGPAGE_DEVID_SAS3508_1:
8739 	case MPI26_MFGPAGE_DEVID_SAS3408:
8740 	case MPI26_MFGPAGE_DEVID_SAS3516:
8741 	case MPI26_MFGPAGE_DEVID_SAS3516_1:
8742 	case MPI26_MFGPAGE_DEVID_SAS3416:
8743 		return MPI26_VERSION;
8744 	}
8745 	return 0;
8746 }
8747 
8748 /**
8749  * _scsih_probe - attach and add scsi host
8750  * @pdev: PCI device struct
8751  * @id: pci device id
8752  *
8753  * Returns 0 success, anything else error.
8754  */
8755 static int
8756 _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id)
8757 {
8758 	struct MPT3SAS_ADAPTER *ioc;
8759 	struct Scsi_Host *shost = NULL;
8760 	int rv;
8761 	u16 hba_mpi_version;
8762 
8763 	/* Determine in which MPI version class this pci device belongs */
8764 	hba_mpi_version = _scsih_determine_hba_mpi_version(pdev);
8765 	if (hba_mpi_version == 0)
8766 		return -ENODEV;
8767 
8768 	/* Enumerate only SAS 2.0 HBA's if hbas_to_enumerate is one,
8769 	 * for other generation HBA's return with -ENODEV
8770 	 */
8771 	if ((hbas_to_enumerate == 1) && (hba_mpi_version !=  MPI2_VERSION))
8772 		return -ENODEV;
8773 
8774 	/* Enumerate only SAS 3.0 HBA's if hbas_to_enumerate is two,
8775 	 * for other generation HBA's return with -ENODEV
8776 	 */
8777 	if ((hbas_to_enumerate == 2) && (!(hba_mpi_version ==  MPI25_VERSION
8778 		|| hba_mpi_version ==  MPI26_VERSION)))
8779 		return -ENODEV;
8780 
8781 	switch (hba_mpi_version) {
8782 	case MPI2_VERSION:
8783 		pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S |
8784 			PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
8785 		/* Use mpt2sas driver host template for SAS 2.0 HBA's */
8786 		shost = scsi_host_alloc(&mpt2sas_driver_template,
8787 		  sizeof(struct MPT3SAS_ADAPTER));
8788 		if (!shost)
8789 			return -ENODEV;
8790 		ioc = shost_priv(shost);
8791 		memset(ioc, 0, sizeof(struct MPT3SAS_ADAPTER));
8792 		ioc->hba_mpi_version_belonged = hba_mpi_version;
8793 		ioc->id = mpt2_ids++;
8794 		sprintf(ioc->driver_name, "%s", MPT2SAS_DRIVER_NAME);
8795 		if (pdev->device == MPI2_MFGPAGE_DEVID_SSS6200) {
8796 			ioc->is_warpdrive = 1;
8797 			ioc->hide_ir_msg = 1;
8798 		} else
8799 			ioc->mfg_pg10_hide_flag = MFG_PAGE10_EXPOSE_ALL_DISKS;
8800 		break;
8801 	case MPI25_VERSION:
8802 	case MPI26_VERSION:
8803 		/* Use mpt3sas driver host template for SAS 3.0 HBA's */
8804 		shost = scsi_host_alloc(&mpt3sas_driver_template,
8805 		  sizeof(struct MPT3SAS_ADAPTER));
8806 		if (!shost)
8807 			return -ENODEV;
8808 		ioc = shost_priv(shost);
8809 		memset(ioc, 0, sizeof(struct MPT3SAS_ADAPTER));
8810 		ioc->hba_mpi_version_belonged = hba_mpi_version;
8811 		ioc->id = mpt3_ids++;
8812 		sprintf(ioc->driver_name, "%s", MPT3SAS_DRIVER_NAME);
8813 		switch (pdev->device) {
8814 		case MPI26_MFGPAGE_DEVID_SAS3508:
8815 		case MPI26_MFGPAGE_DEVID_SAS3508_1:
8816 		case MPI26_MFGPAGE_DEVID_SAS3408:
8817 		case MPI26_MFGPAGE_DEVID_SAS3516:
8818 		case MPI26_MFGPAGE_DEVID_SAS3516_1:
8819 		case MPI26_MFGPAGE_DEVID_SAS3416:
8820 			ioc->is_gen35_ioc = 1;
8821 			break;
8822 		default:
8823 			ioc->is_gen35_ioc = 0;
8824 		}
8825 		if ((ioc->hba_mpi_version_belonged == MPI25_VERSION &&
8826 			pdev->revision >= SAS3_PCI_DEVICE_C0_REVISION) ||
8827 			(ioc->hba_mpi_version_belonged == MPI26_VERSION)) {
8828 			ioc->combined_reply_queue = 1;
8829 			if (ioc->is_gen35_ioc)
8830 				ioc->combined_reply_index_count =
8831 				 MPT3_SUP_REPLY_POST_HOST_INDEX_REG_COUNT_G35;
8832 			else
8833 				ioc->combined_reply_index_count =
8834 				 MPT3_SUP_REPLY_POST_HOST_INDEX_REG_COUNT_G3;
8835 		}
8836 		break;
8837 	default:
8838 		return -ENODEV;
8839 	}
8840 
8841 	INIT_LIST_HEAD(&ioc->list);
8842 	spin_lock(&gioc_lock);
8843 	list_add_tail(&ioc->list, &mpt3sas_ioc_list);
8844 	spin_unlock(&gioc_lock);
8845 	ioc->shost = shost;
8846 	ioc->pdev = pdev;
8847 	ioc->scsi_io_cb_idx = scsi_io_cb_idx;
8848 	ioc->tm_cb_idx = tm_cb_idx;
8849 	ioc->ctl_cb_idx = ctl_cb_idx;
8850 	ioc->base_cb_idx = base_cb_idx;
8851 	ioc->port_enable_cb_idx = port_enable_cb_idx;
8852 	ioc->transport_cb_idx = transport_cb_idx;
8853 	ioc->scsih_cb_idx = scsih_cb_idx;
8854 	ioc->config_cb_idx = config_cb_idx;
8855 	ioc->tm_tr_cb_idx = tm_tr_cb_idx;
8856 	ioc->tm_tr_volume_cb_idx = tm_tr_volume_cb_idx;
8857 	ioc->tm_sas_control_cb_idx = tm_sas_control_cb_idx;
8858 	ioc->logging_level = logging_level;
8859 	ioc->schedule_dead_ioc_flush_running_cmds = &_scsih_flush_running_cmds;
8860 	/* misc semaphores and spin locks */
8861 	mutex_init(&ioc->reset_in_progress_mutex);
8862 	/* initializing pci_access_mutex lock */
8863 	mutex_init(&ioc->pci_access_mutex);
8864 	spin_lock_init(&ioc->ioc_reset_in_progress_lock);
8865 	spin_lock_init(&ioc->scsi_lookup_lock);
8866 	spin_lock_init(&ioc->sas_device_lock);
8867 	spin_lock_init(&ioc->sas_node_lock);
8868 	spin_lock_init(&ioc->fw_event_lock);
8869 	spin_lock_init(&ioc->raid_device_lock);
8870 	spin_lock_init(&ioc->diag_trigger_lock);
8871 
8872 	INIT_LIST_HEAD(&ioc->sas_device_list);
8873 	INIT_LIST_HEAD(&ioc->sas_device_init_list);
8874 	INIT_LIST_HEAD(&ioc->sas_expander_list);
8875 	INIT_LIST_HEAD(&ioc->fw_event_list);
8876 	INIT_LIST_HEAD(&ioc->raid_device_list);
8877 	INIT_LIST_HEAD(&ioc->sas_hba.sas_port_list);
8878 	INIT_LIST_HEAD(&ioc->delayed_tr_list);
8879 	INIT_LIST_HEAD(&ioc->delayed_sc_list);
8880 	INIT_LIST_HEAD(&ioc->delayed_event_ack_list);
8881 	INIT_LIST_HEAD(&ioc->delayed_tr_volume_list);
8882 	INIT_LIST_HEAD(&ioc->reply_queue_list);
8883 
8884 	sprintf(ioc->name, "%s_cm%d", ioc->driver_name, ioc->id);
8885 
8886 	/* init shost parameters */
8887 	shost->max_cmd_len = 32;
8888 	shost->max_lun = max_lun;
8889 	shost->transportt = mpt3sas_transport_template;
8890 	shost->unique_id = ioc->id;
8891 
8892 	if (max_sectors != 0xFFFF) {
8893 		if (max_sectors < 64) {
8894 			shost->max_sectors = 64;
8895 			pr_warn(MPT3SAS_FMT "Invalid value %d passed " \
8896 			    "for max_sectors, range is 64 to 32767. Assigning "
8897 			    "value of 64.\n", ioc->name, max_sectors);
8898 		} else if (max_sectors > 32767) {
8899 			shost->max_sectors = 32767;
8900 			pr_warn(MPT3SAS_FMT "Invalid value %d passed " \
8901 			    "for max_sectors, range is 64 to 32767. Assigning "
8902 			    "default value of 32767.\n", ioc->name,
8903 			    max_sectors);
8904 		} else {
8905 			shost->max_sectors = max_sectors & 0xFFFE;
8906 			pr_info(MPT3SAS_FMT
8907 				"The max_sectors value is set to %d\n",
8908 				ioc->name, shost->max_sectors);
8909 		}
8910 	}
8911 
8912 	/* register EEDP capabilities with SCSI layer */
8913 	if (prot_mask > 0)
8914 		scsi_host_set_prot(shost, prot_mask);
8915 	else
8916 		scsi_host_set_prot(shost, SHOST_DIF_TYPE1_PROTECTION
8917 				   | SHOST_DIF_TYPE2_PROTECTION
8918 				   | SHOST_DIF_TYPE3_PROTECTION);
8919 
8920 	scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC);
8921 
8922 	/* event thread */
8923 	snprintf(ioc->firmware_event_name, sizeof(ioc->firmware_event_name),
8924 	    "fw_event_%s%d", ioc->driver_name, ioc->id);
8925 	ioc->firmware_event_thread = alloc_ordered_workqueue(
8926 	    ioc->firmware_event_name, WQ_MEM_RECLAIM);
8927 	if (!ioc->firmware_event_thread) {
8928 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8929 		    ioc->name, __FILE__, __LINE__, __func__);
8930 		rv = -ENODEV;
8931 		goto out_thread_fail;
8932 	}
8933 
8934 	ioc->is_driver_loading = 1;
8935 	if ((mpt3sas_base_attach(ioc))) {
8936 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8937 		    ioc->name, __FILE__, __LINE__, __func__);
8938 		rv = -ENODEV;
8939 		goto out_attach_fail;
8940 	}
8941 
8942 	if (ioc->is_warpdrive) {
8943 		if (ioc->mfg_pg10_hide_flag ==  MFG_PAGE10_EXPOSE_ALL_DISKS)
8944 			ioc->hide_drives = 0;
8945 		else if (ioc->mfg_pg10_hide_flag ==  MFG_PAGE10_HIDE_ALL_DISKS)
8946 			ioc->hide_drives = 1;
8947 		else {
8948 			if (mpt3sas_get_num_volumes(ioc))
8949 				ioc->hide_drives = 1;
8950 			else
8951 				ioc->hide_drives = 0;
8952 		}
8953 	} else
8954 		ioc->hide_drives = 0;
8955 
8956 	rv = scsi_add_host(shost, &pdev->dev);
8957 	if (rv) {
8958 		pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
8959 		    ioc->name, __FILE__, __LINE__, __func__);
8960 		goto out_add_shost_fail;
8961 	}
8962 
8963 	scsi_scan_host(shost);
8964 	return 0;
8965 out_add_shost_fail:
8966 	mpt3sas_base_detach(ioc);
8967  out_attach_fail:
8968 	destroy_workqueue(ioc->firmware_event_thread);
8969  out_thread_fail:
8970 	spin_lock(&gioc_lock);
8971 	list_del(&ioc->list);
8972 	spin_unlock(&gioc_lock);
8973 	scsi_host_put(shost);
8974 	return rv;
8975 }
8976 
8977 #ifdef CONFIG_PM
8978 /**
8979  * scsih_suspend - power management suspend main entry point
8980  * @pdev: PCI device struct
8981  * @state: PM state change to (usually PCI_D3)
8982  *
8983  * Returns 0 success, anything else error.
8984  */
8985 static int
8986 scsih_suspend(struct pci_dev *pdev, pm_message_t state)
8987 {
8988 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
8989 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
8990 	pci_power_t device_state;
8991 
8992 	mpt3sas_base_stop_watchdog(ioc);
8993 	flush_scheduled_work();
8994 	scsi_block_requests(shost);
8995 	device_state = pci_choose_state(pdev, state);
8996 	pr_info(MPT3SAS_FMT
8997 		"pdev=0x%p, slot=%s, entering operating state [D%d]\n",
8998 		ioc->name, pdev, pci_name(pdev), device_state);
8999 
9000 	pci_save_state(pdev);
9001 	mpt3sas_base_free_resources(ioc);
9002 	pci_set_power_state(pdev, device_state);
9003 	return 0;
9004 }
9005 
9006 /**
9007  * scsih_resume - power management resume main entry point
9008  * @pdev: PCI device struct
9009  *
9010  * Returns 0 success, anything else error.
9011  */
9012 static int
9013 scsih_resume(struct pci_dev *pdev)
9014 {
9015 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9016 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9017 	pci_power_t device_state = pdev->current_state;
9018 	int r;
9019 
9020 	pr_info(MPT3SAS_FMT
9021 		"pdev=0x%p, slot=%s, previous operating state [D%d]\n",
9022 		ioc->name, pdev, pci_name(pdev), device_state);
9023 
9024 	pci_set_power_state(pdev, PCI_D0);
9025 	pci_enable_wake(pdev, PCI_D0, 0);
9026 	pci_restore_state(pdev);
9027 	ioc->pdev = pdev;
9028 	r = mpt3sas_base_map_resources(ioc);
9029 	if (r)
9030 		return r;
9031 
9032 	mpt3sas_base_hard_reset_handler(ioc, SOFT_RESET);
9033 	scsi_unblock_requests(shost);
9034 	mpt3sas_base_start_watchdog(ioc);
9035 	return 0;
9036 }
9037 #endif /* CONFIG_PM */
9038 
9039 /**
9040  * scsih_pci_error_detected - Called when a PCI error is detected.
9041  * @pdev: PCI device struct
9042  * @state: PCI channel state
9043  *
9044  * Description: Called when a PCI error is detected.
9045  *
9046  * Return value:
9047  *      PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
9048  */
9049 static pci_ers_result_t
9050 scsih_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
9051 {
9052 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9053 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9054 
9055 	pr_info(MPT3SAS_FMT "PCI error: detected callback, state(%d)!!\n",
9056 	    ioc->name, state);
9057 
9058 	switch (state) {
9059 	case pci_channel_io_normal:
9060 		return PCI_ERS_RESULT_CAN_RECOVER;
9061 	case pci_channel_io_frozen:
9062 		/* Fatal error, prepare for slot reset */
9063 		ioc->pci_error_recovery = 1;
9064 		scsi_block_requests(ioc->shost);
9065 		mpt3sas_base_stop_watchdog(ioc);
9066 		mpt3sas_base_free_resources(ioc);
9067 		return PCI_ERS_RESULT_NEED_RESET;
9068 	case pci_channel_io_perm_failure:
9069 		/* Permanent error, prepare for device removal */
9070 		ioc->pci_error_recovery = 1;
9071 		mpt3sas_base_stop_watchdog(ioc);
9072 		_scsih_flush_running_cmds(ioc);
9073 		return PCI_ERS_RESULT_DISCONNECT;
9074 	}
9075 	return PCI_ERS_RESULT_NEED_RESET;
9076 }
9077 
9078 /**
9079  * scsih_pci_slot_reset - Called when PCI slot has been reset.
9080  * @pdev: PCI device struct
9081  *
9082  * Description: This routine is called by the pci error recovery
9083  * code after the PCI slot has been reset, just before we
9084  * should resume normal operations.
9085  */
9086 static pci_ers_result_t
9087 scsih_pci_slot_reset(struct pci_dev *pdev)
9088 {
9089 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9090 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9091 	int rc;
9092 
9093 	pr_info(MPT3SAS_FMT "PCI error: slot reset callback!!\n",
9094 	     ioc->name);
9095 
9096 	ioc->pci_error_recovery = 0;
9097 	ioc->pdev = pdev;
9098 	pci_restore_state(pdev);
9099 	rc = mpt3sas_base_map_resources(ioc);
9100 	if (rc)
9101 		return PCI_ERS_RESULT_DISCONNECT;
9102 
9103 	rc = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
9104 
9105 	pr_warn(MPT3SAS_FMT "hard reset: %s\n", ioc->name,
9106 	    (rc == 0) ? "success" : "failed");
9107 
9108 	if (!rc)
9109 		return PCI_ERS_RESULT_RECOVERED;
9110 	else
9111 		return PCI_ERS_RESULT_DISCONNECT;
9112 }
9113 
9114 /**
9115  * scsih_pci_resume() - resume normal ops after PCI reset
9116  * @pdev: pointer to PCI device
9117  *
9118  * Called when the error recovery driver tells us that its
9119  * OK to resume normal operation. Use completion to allow
9120  * halted scsi ops to resume.
9121  */
9122 static void
9123 scsih_pci_resume(struct pci_dev *pdev)
9124 {
9125 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9126 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9127 
9128 	pr_info(MPT3SAS_FMT "PCI error: resume callback!!\n", ioc->name);
9129 
9130 	pci_cleanup_aer_uncorrect_error_status(pdev);
9131 	mpt3sas_base_start_watchdog(ioc);
9132 	scsi_unblock_requests(ioc->shost);
9133 }
9134 
9135 /**
9136  * scsih_pci_mmio_enabled - Enable MMIO and dump debug registers
9137  * @pdev: pointer to PCI device
9138  */
9139 static pci_ers_result_t
9140 scsih_pci_mmio_enabled(struct pci_dev *pdev)
9141 {
9142 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9143 	struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
9144 
9145 	pr_info(MPT3SAS_FMT "PCI error: mmio enabled callback!!\n",
9146 	    ioc->name);
9147 
9148 	/* TODO - dump whatever for debugging purposes */
9149 
9150 	/* This called only if scsih_pci_error_detected returns
9151 	 * PCI_ERS_RESULT_CAN_RECOVER. Read/write to the device still
9152 	 * works, no need to reset slot.
9153 	 */
9154 	return PCI_ERS_RESULT_RECOVERED;
9155 }
9156 
9157 /**
9158  * scsih__ncq_prio_supp - Check for NCQ command priority support
9159  * @sdev: scsi device struct
9160  *
9161  * This is called when a user indicates they would like to enable
9162  * ncq command priorities. This works only on SATA devices.
9163  */
9164 bool scsih_ncq_prio_supp(struct scsi_device *sdev)
9165 {
9166 	unsigned char *buf;
9167 	bool ncq_prio_supp = false;
9168 
9169 	if (!scsi_device_supports_vpd(sdev))
9170 		return ncq_prio_supp;
9171 
9172 	buf = kmalloc(SCSI_VPD_PG_LEN, GFP_KERNEL);
9173 	if (!buf)
9174 		return ncq_prio_supp;
9175 
9176 	if (!scsi_get_vpd_page(sdev, 0x89, buf, SCSI_VPD_PG_LEN))
9177 		ncq_prio_supp = (buf[213] >> 4) & 1;
9178 
9179 	kfree(buf);
9180 	return ncq_prio_supp;
9181 }
9182 /*
9183  * The pci device ids are defined in mpi/mpi2_cnfg.h.
9184  */
9185 static const struct pci_device_id mpt3sas_pci_table[] = {
9186 	/* Spitfire ~ 2004 */
9187 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2004,
9188 		PCI_ANY_ID, PCI_ANY_ID },
9189 	/* Falcon ~ 2008 */
9190 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2008,
9191 		PCI_ANY_ID, PCI_ANY_ID },
9192 	/* Liberator ~ 2108 */
9193 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_1,
9194 		PCI_ANY_ID, PCI_ANY_ID },
9195 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_2,
9196 		PCI_ANY_ID, PCI_ANY_ID },
9197 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_3,
9198 		PCI_ANY_ID, PCI_ANY_ID },
9199 	/* Meteor ~ 2116 */
9200 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2116_1,
9201 		PCI_ANY_ID, PCI_ANY_ID },
9202 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2116_2,
9203 		PCI_ANY_ID, PCI_ANY_ID },
9204 	/* Thunderbolt ~ 2208 */
9205 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_1,
9206 		PCI_ANY_ID, PCI_ANY_ID },
9207 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_2,
9208 		PCI_ANY_ID, PCI_ANY_ID },
9209 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_3,
9210 		PCI_ANY_ID, PCI_ANY_ID },
9211 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_4,
9212 		PCI_ANY_ID, PCI_ANY_ID },
9213 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_5,
9214 		PCI_ANY_ID, PCI_ANY_ID },
9215 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_6,
9216 		PCI_ANY_ID, PCI_ANY_ID },
9217 	/* Mustang ~ 2308 */
9218 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_1,
9219 		PCI_ANY_ID, PCI_ANY_ID },
9220 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_2,
9221 		PCI_ANY_ID, PCI_ANY_ID },
9222 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_3,
9223 		PCI_ANY_ID, PCI_ANY_ID },
9224 	/* SSS6200 */
9225 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SSS6200,
9226 		PCI_ANY_ID, PCI_ANY_ID },
9227 	/* Fury ~ 3004 and 3008 */
9228 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3004,
9229 		PCI_ANY_ID, PCI_ANY_ID },
9230 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3008,
9231 		PCI_ANY_ID, PCI_ANY_ID },
9232 	/* Invader ~ 3108 */
9233 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_1,
9234 		PCI_ANY_ID, PCI_ANY_ID },
9235 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_2,
9236 		PCI_ANY_ID, PCI_ANY_ID },
9237 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_5,
9238 		PCI_ANY_ID, PCI_ANY_ID },
9239 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_6,
9240 		PCI_ANY_ID, PCI_ANY_ID },
9241 	/* Cutlass ~ 3216 and 3224 */
9242 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3216,
9243 		PCI_ANY_ID, PCI_ANY_ID },
9244 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3224,
9245 		PCI_ANY_ID, PCI_ANY_ID },
9246 	/* Intruder ~ 3316 and 3324 */
9247 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_1,
9248 		PCI_ANY_ID, PCI_ANY_ID },
9249 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_2,
9250 		PCI_ANY_ID, PCI_ANY_ID },
9251 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_3,
9252 		PCI_ANY_ID, PCI_ANY_ID },
9253 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_4,
9254 		PCI_ANY_ID, PCI_ANY_ID },
9255 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_1,
9256 		PCI_ANY_ID, PCI_ANY_ID },
9257 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_2,
9258 		PCI_ANY_ID, PCI_ANY_ID },
9259 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_3,
9260 		PCI_ANY_ID, PCI_ANY_ID },
9261 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_4,
9262 		PCI_ANY_ID, PCI_ANY_ID },
9263 	/* Ventura, Crusader, Harpoon & Tomcat ~ 3516, 3416, 3508 & 3408*/
9264 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3508,
9265 		PCI_ANY_ID, PCI_ANY_ID },
9266 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3508_1,
9267 		PCI_ANY_ID, PCI_ANY_ID },
9268 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3408,
9269 		PCI_ANY_ID, PCI_ANY_ID },
9270 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3516,
9271 		PCI_ANY_ID, PCI_ANY_ID },
9272 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3516_1,
9273 		PCI_ANY_ID, PCI_ANY_ID },
9274 	{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3416,
9275 		PCI_ANY_ID, PCI_ANY_ID },
9276 	{0}     /* Terminating entry */
9277 };
9278 MODULE_DEVICE_TABLE(pci, mpt3sas_pci_table);
9279 
9280 static struct pci_error_handlers _mpt3sas_err_handler = {
9281 	.error_detected	= scsih_pci_error_detected,
9282 	.mmio_enabled	= scsih_pci_mmio_enabled,
9283 	.slot_reset	= scsih_pci_slot_reset,
9284 	.resume		= scsih_pci_resume,
9285 };
9286 
9287 static struct pci_driver mpt3sas_driver = {
9288 	.name		= MPT3SAS_DRIVER_NAME,
9289 	.id_table	= mpt3sas_pci_table,
9290 	.probe		= _scsih_probe,
9291 	.remove		= scsih_remove,
9292 	.shutdown	= scsih_shutdown,
9293 	.err_handler	= &_mpt3sas_err_handler,
9294 #ifdef CONFIG_PM
9295 	.suspend	= scsih_suspend,
9296 	.resume		= scsih_resume,
9297 #endif
9298 };
9299 
9300 /**
9301  * scsih_init - main entry point for this driver.
9302  *
9303  * Returns 0 success, anything else error.
9304  */
9305 static int
9306 scsih_init(void)
9307 {
9308 	mpt2_ids = 0;
9309 	mpt3_ids = 0;
9310 
9311 	mpt3sas_base_initialize_callback_handler();
9312 
9313 	 /* queuecommand callback hander */
9314 	scsi_io_cb_idx = mpt3sas_base_register_callback_handler(_scsih_io_done);
9315 
9316 	/* task management callback handler */
9317 	tm_cb_idx = mpt3sas_base_register_callback_handler(_scsih_tm_done);
9318 
9319 	/* base internal commands callback handler */
9320 	base_cb_idx = mpt3sas_base_register_callback_handler(mpt3sas_base_done);
9321 	port_enable_cb_idx = mpt3sas_base_register_callback_handler(
9322 	    mpt3sas_port_enable_done);
9323 
9324 	/* transport internal commands callback handler */
9325 	transport_cb_idx = mpt3sas_base_register_callback_handler(
9326 	    mpt3sas_transport_done);
9327 
9328 	/* scsih internal commands callback handler */
9329 	scsih_cb_idx = mpt3sas_base_register_callback_handler(_scsih_done);
9330 
9331 	/* configuration page API internal commands callback handler */
9332 	config_cb_idx = mpt3sas_base_register_callback_handler(
9333 	    mpt3sas_config_done);
9334 
9335 	/* ctl module callback handler */
9336 	ctl_cb_idx = mpt3sas_base_register_callback_handler(mpt3sas_ctl_done);
9337 
9338 	tm_tr_cb_idx = mpt3sas_base_register_callback_handler(
9339 	    _scsih_tm_tr_complete);
9340 
9341 	tm_tr_volume_cb_idx = mpt3sas_base_register_callback_handler(
9342 	    _scsih_tm_volume_tr_complete);
9343 
9344 	tm_sas_control_cb_idx = mpt3sas_base_register_callback_handler(
9345 	    _scsih_sas_control_complete);
9346 
9347 	return 0;
9348 }
9349 
9350 /**
9351  * scsih_exit - exit point for this driver (when it is a module).
9352  *
9353  * Returns 0 success, anything else error.
9354  */
9355 static void
9356 scsih_exit(void)
9357 {
9358 
9359 	mpt3sas_base_release_callback_handler(scsi_io_cb_idx);
9360 	mpt3sas_base_release_callback_handler(tm_cb_idx);
9361 	mpt3sas_base_release_callback_handler(base_cb_idx);
9362 	mpt3sas_base_release_callback_handler(port_enable_cb_idx);
9363 	mpt3sas_base_release_callback_handler(transport_cb_idx);
9364 	mpt3sas_base_release_callback_handler(scsih_cb_idx);
9365 	mpt3sas_base_release_callback_handler(config_cb_idx);
9366 	mpt3sas_base_release_callback_handler(ctl_cb_idx);
9367 
9368 	mpt3sas_base_release_callback_handler(tm_tr_cb_idx);
9369 	mpt3sas_base_release_callback_handler(tm_tr_volume_cb_idx);
9370 	mpt3sas_base_release_callback_handler(tm_sas_control_cb_idx);
9371 
9372 /* raid transport support */
9373 	if (hbas_to_enumerate != 1)
9374 		raid_class_release(mpt3sas_raid_template);
9375 	if (hbas_to_enumerate != 2)
9376 		raid_class_release(mpt2sas_raid_template);
9377 	sas_release_transport(mpt3sas_transport_template);
9378 }
9379 
9380 /**
9381  * _mpt3sas_init - main entry point for this driver.
9382  *
9383  * Returns 0 success, anything else error.
9384  */
9385 static int __init
9386 _mpt3sas_init(void)
9387 {
9388 	int error;
9389 
9390 	pr_info("%s version %s loaded\n", MPT3SAS_DRIVER_NAME,
9391 					MPT3SAS_DRIVER_VERSION);
9392 
9393 	mpt3sas_transport_template =
9394 	    sas_attach_transport(&mpt3sas_transport_functions);
9395 	if (!mpt3sas_transport_template)
9396 		return -ENODEV;
9397 
9398 	/* No need attach mpt3sas raid functions template
9399 	 * if hbas_to_enumarate value is one.
9400 	 */
9401 	if (hbas_to_enumerate != 1) {
9402 		mpt3sas_raid_template =
9403 				raid_class_attach(&mpt3sas_raid_functions);
9404 		if (!mpt3sas_raid_template) {
9405 			sas_release_transport(mpt3sas_transport_template);
9406 			return -ENODEV;
9407 		}
9408 	}
9409 
9410 	/* No need to attach mpt2sas raid functions template
9411 	 * if hbas_to_enumarate value is two
9412 	 */
9413 	if (hbas_to_enumerate != 2) {
9414 		mpt2sas_raid_template =
9415 				raid_class_attach(&mpt2sas_raid_functions);
9416 		if (!mpt2sas_raid_template) {
9417 			sas_release_transport(mpt3sas_transport_template);
9418 			return -ENODEV;
9419 		}
9420 	}
9421 
9422 	error = scsih_init();
9423 	if (error) {
9424 		scsih_exit();
9425 		return error;
9426 	}
9427 
9428 	mpt3sas_ctl_init(hbas_to_enumerate);
9429 
9430 	error = pci_register_driver(&mpt3sas_driver);
9431 	if (error)
9432 		scsih_exit();
9433 
9434 	return error;
9435 }
9436 
9437 /**
9438  * _mpt3sas_exit - exit point for this driver (when it is a module).
9439  *
9440  */
9441 static void __exit
9442 _mpt3sas_exit(void)
9443 {
9444 	pr_info("mpt3sas version %s unloading\n",
9445 				MPT3SAS_DRIVER_VERSION);
9446 
9447 	pci_unregister_driver(&mpt3sas_driver);
9448 
9449 	mpt3sas_ctl_exit(hbas_to_enumerate);
9450 
9451 	scsih_exit();
9452 }
9453 
9454 module_init(_mpt3sas_init);
9455 module_exit(_mpt3sas_exit);
9456