xref: /linux/Documentation/scsi/ChangeLog.megaraid_sas (revision 740c699a8d316c8bf8593f19e2ca47795e690622)
1Release Date    : Mon. Mar 10, 2014 17:00:00 PST 2014 -
2			(emaild-id:megaraidlinux@lsi.com)
3			Adam Radford
4			Kashyap Desai
5			Sumit Saxena
6Current Version : 06.803.01.00-rc1
7Old Version     : 06.700.06.00-rc1
8    1. Load correct raid context timeout value for multipathing & clustering.
9    2. Fix megasas_ioc_init_fusion to use local stack variable.
10    3. Return leaked MPT frames to MPT command pool.
11    4. Add Dell PowerEdge VRTX SR-IOV VF device support.
12    5. Version and Changelog update.
13-------------------------------------------------------------------------------
14Release Date    : Sat. Aug 31, 2013 17:00:00 PST 2013 -
15			(emaild-id:megaraidlinux@lsi.com)
16			Adam Radford
17			Kashyap Desai
18			Sumit Saxena
19Current Version : 06.700.06.00-rc1
20Old Version     : 06.600.18.00-rc1
21    1. Add High Availability clustering support using shared Logical Disks.
22    2. Version and Changelog update.
23-------------------------------------------------------------------------------
24Release Date    : Wed. May 15, 2013 17:00:00 PST 2013 -
25			(emaild-id:megaraidlinux@lsi.com)
26			Adam Radford
27			Kashyap Desai
28			Sumit Saxena
29Current Version : 06.600.18.00-rc1
30Old Version     : 06.506.00.00-rc1
31    1. Return DID_ERROR for scsi io, when controller is in critical h/w error.
32    2. Fix the interrupt mask for Gen2 controller.
33    3. Update balance count in driver to be in sync of firmware.
34    4. Free event detail memory without device ID check.
35    5. Set IO request timeout value provided by OS timeout for Tape devices.
36    6. Add support for MegaRAID Fury (device ID-0x005f) 12Gb/s controllers.
37    7. Add support to display Customer branding details in syslog.
38    8. Set IoFlags to enable Fast Path for JBODs for Invader/Fury(12 Gb/s)
39    controllers.
40    9. Add support for Extended MSI-x vectors for Invader and Fury(12Gb/s
41    HBA).
42    10.Add support for Uneven Span PRL11.
43    11.Add support to differentiate between iMR and MR Firmware.
44    12.Version and Changelog update.
45-------------------------------------------------------------------------------
46Release Date    : Sat. Feb 9, 2013 17:00:00 PST 2013 -
47			(emaild-id:megaraidlinux@lsi.com)
48			Adam Radford
49Current Version : 06.506.00.00-rc1
50Old Version     : 06.504.01.00-rc1
51    1. Add 4k FastPath DIF support.
52    2. Dont load DevHandle unless FastPath enabled.
53    3. Version and Changelog update.
54-------------------------------------------------------------------------------
55Release Date    : Mon. Oct 1, 2012 17:00:00 PST 2012 -
56			(emaild-id:megaraidlinux@lsi.com)
57			Adam Radford
58Current Version : 06.504.01.00-rc1
59Old Version     : 00.00.06.18-rc1
60    1. Removed un-needed completion_lock spinlock calls.
61    2. Add module param for configurable MSI-X vector count.
62    3. Load io_request DataLength in bytes.
63    4. Add array boundary check for SystemPD.
64    5. Add SystemPD FastPath support.
65    6. Remove duplicate code.
66    7. Version, Changelog, Copyright update.
67-------------------------------------------------------------------------------
68Release Date    : Tue. Jun 17, 2012 17:00:00 PST 2012 -
69			(emaild-id:megaraidlinux@lsi.com)
70			Adam Radford/Kashyap Desai
71Current Version : 00.00.06.18-rc1
72Old Version     : 00.00.06.15-rc1
73    1. Fix Copyright dates.
74    2. Add throttlequeuedepth module parameter.
75    3. Add resetwaittime module parameter.
76    4. Move poll_aen_lock initializer.
77-------------------------------------------------------------------------------
78Release Date    : Mon. Mar 19, 2012 17:00:00 PST 2012 -
79			(emaild-id:megaraidlinux@lsi.com)
80			Adam Radford
81Current Version : 00.00.06.15-rc1
82Old Version     : 00.00.06.14-rc1
83    1. Optimize HostMSIxVectors setting.
84    2. Add fpRead/WriteCapable, fpRead/WriteAcrossStripe checks.
85-------------------------------------------------------------------------------
86Release Date    : Fri. Jan 6, 2012 17:00:00 PST 2010 -
87			(emaild-id:megaraidlinux@lsi.com)
88			Adam Radford
89Current Version : 00.00.06.14-rc1
90Old Version     : 00.00.06.12-rc1
91    1. Fix reglockFlags for degraded raid5/6 for MR 9360/9380.
92    2. Mask off flags in ioctl path to prevent memory scribble with older
93       MegaCLI versions.
94    3. Remove poll_mode_io module paramater, sysfs node, and associated code.
95-------------------------------------------------------------------------------
96Release Date    : Wed. Oct 5, 2011 17:00:00 PST 2010 -
97			(emaild-id:megaraidlinux@lsi.com)
98			Adam Radford
99Current Version : 00.00.06.12-rc1
100Old Version     : 00.00.05.40-rc1
101    1. Continue booting immediately if FW in FAULT at driver load time.
102    2. Increase default cmds per lun to 256.
103    3. Fix mismatch in megasas_reset_fusion() mutex lock-unlock.
104    4. Remove some un-necessary code.
105    5. Clear state change interrupts for Fusion/Invader.
106    6. Clear FUSION_IN_RESET before enabling interrupts.
107    7. Add support for MegaRAID 9360/9380 12GB/s controllers.
108    8. Add multiple MSI-X vector/multiple reply queue support.
109    9. Add driver workaround for PERC5/1068 kdump kernel panic.
110-------------------------------------------------------------------------------
111Release Date    : Tue. Jul 26, 2011 17:00:00 PST 2010 -
112			(emaild-id:megaraidlinux@lsi.com)
113			Adam Radford
114Current Version : 00.00.05.40-rc1
115Old Version     : 00.00.05.38-rc1
116    1. Fix FastPath I/O to work with degraded RAID 1.
117    2. Add .change_queue_depth support.
118-------------------------------------------------------------------------------
119Release Date    : Wed. May 11, 2011 17:00:00 PST 2010 -
120			(emaild-id:megaraidlinux@lsi.com)
121			Adam Radford
122Current Version : 00.00.05.38-rc1
123Old Version     : 00.00.05.34-rc1
124    1. Remove MSI-X black list, use MFI_REG_STATE.ready.msiEnable.
125    2. Remove un-used function megasas_return_cmd_for_smid().
126    3. Check MFI_REG_STATE.fault.resetAdapter in megasas_reset_fusion().
127    4. Disable interrupts/free_irq() in megasas_shutdown().
128    5. Fix bug where AENs could be lost in probe() and resume().
129    6. Convert 6,10,12 byte CDB's to 16 byte CDB for large LBA's for FastPath
130       IO.
131    7. Add 1078 OCR support.
132-------------------------------------------------------------------------------
133Release Date    : Thu. Feb 24, 2011 17:00:00 PST 2010 -
134			(emaild-id:megaraidlinux@lsi.com)
135			Adam Radford
136Current Version : 00.00.05.34-rc1
137Old Version     : 00.00.05.29-rc1
138    1. Fix some failure gotos from megasas_probe_one(), etc.
139    2. Add missing check_and_restore_queue_depth() call in
140       complete_cmd_fusion().
141    3. Enable MSI-X before calling megasas_init_fw().
142    4. Call tasklet_schedule() even if outbound_intr_status == 0 for MFI based
143       boards in MSI-X mode.
144    5. Fix megasas_probe_one() to clear PCI_MSIX_FLAGS_ENABLE in msi control
145       register in kdump kernel.
146    6. Fix megasas_get_cmd() to only print "Command pool empty" if
147       megasas_dbg_lvl is set.
148    7. Fix megasas_build_dcdb_fusion() to not filter by TYPE_DISK.
149    8. Fix megasas_build_dcdb_fusion() to use io_request->LUN[1] field.
150    9. Add MR_EVT_CFG_CLEARED to megasas_aen_polling().
151    10. Fix tasklet_init() in megasas_init_fw() to use instancet->tasklet.
152    11. Fix fault state handling in megasas_transition_to_ready().
153    12. Fix max_sectors setting for IEEE SGL's.
154    13. Fix iMR OCR support to work correctly.
155-------------------------------------------------------------------------------
156Release Date    : Tues.  Dec 14, 2010 17:00:00 PST 2010 -
157			(emaild-id:megaraidlinux@lsi.com)
158			Adam Radford
159Current Version : 00.00.05.29-rc1
160Old Version     : 00.00.04.31-rc1
161    1. Rename megaraid_sas.c to megaraid_sas_base.c.
162    2. Update GPL headers.
163    3. Add MSI-X support and 'msix_disable' module parameter.
164    4. Use lowest memory bar (for SR-IOV VF support).
165    5. Add struct megasas_instance_temlate changes, and change all code to use
166       new instance entries:
167
168       irqreturn_t (*service_isr )(int irq, void *devp);
169       void (*tasklet)(unsigned long);
170       u32 (*init_adapter)(struct megasas_instance *);
171       u32 (*build_and_issue_cmd) (struct megasas_instance *,
172       struct scsi_cmnd *);
173       void (*issue_dcmd) (struct megasas_instance *instance,
174                              struct megasas_cmd *cmd);
175
176   6. Add code to support MegaRAID 9265/9285 controllers device id (0x5b).
177-------------------------------------------------------------------------------
1781 Release Date    : Thur.  May 03, 2010 09:12:45 PST 2009 -
179			(emaild-id:megaraidlinux@lsi.com)
180			Bo Yang
181
1822 Current Version : 00.00.04.31-rc1
1833 Older Version   : 00.00.04.17.1-rc1
184
1851.	Add the Online Controller Reset (OCR) to the Driver.
186	OCR is the new feature for megaraid_sas driver which
187	will allow the fw to do the chip reset which will not
188	affact the OS behavious.
189
190	To add the OCR support, driver need to do:
191		a). reset the controller chips -- Xscale and Gen2 which
192		will change the function calls and add the reset function
193		related to this two chips.
194
195		b). during the reset, driver will store the pending cmds
196		which not returned by FW to driver's pending queue.  Driver
197		will re-issue those pending cmds again to FW after the OCR
198		finished.
199
200		c). In driver's timeout routine, driver will report to
201		OS as reset. Also driver's queue routine will block the
202		cmds until the OCR finished.
203
204		d). in Driver's ISR routine, if driver get the FW state as
205		state change, FW in Failure status and FW support online controller
206		reset (OCR), driver will start to do the controller reset.
207
208		e). In driver's IOCTL routine, the application cmds will wait for the
209		OCR to finish, then issue the cmds to FW.
210
211		f). Before driver kill adapter, driver will do last chance of
212		OCR to see if driver can bring back the FW.
213
2142.	Add the support update flag to the driver to tell LSI megaraid_sas
215	application which driver will support the device update.  So application
216	will not need to do the device update after application add/del the device
217	from the system.
2183.	In driver's timeout routine, driver will do three time reset if fw is in
219	failed state.  Driver will kill adapter if can't bring back FW after the
220	this three times reset.
2214.	Add the input parameter max_sectors to 1MB support to our GEN2 controller.
222	customer can use the input paramenter max_sectors to add 1MB support to GEN2
223	controller.
224
2251 Release Date    : Thur.  Oct 29, 2009 09:12:45 PST 2009 -
226			(emaild-id:megaraidlinux@lsi.com)
227			Bo Yang
228
2292 Current Version : 00.00.04.17.1-rc1
2303 Older Version   : 00.00.04.12
231
2321.	Add the pad_0 in mfi frame structure to 0 to fix the
233	context value larger than 32bit value issue.
234
2352.	Add the logic drive list to the driver.  Driver will
236	keep the logic drive list internal after driver load.
237
2383.	driver fixed the device update issue after get the AEN
239	PD delete/ADD, LD add/delete from FW.
240
2411 Release Date    : Tues.  July 28, 2009 10:12:45 PST 2009 -
242			(emaild-id:megaraidlinux@lsi.com)
243			Bo Yang
244
2452 Current Version : 00.00.04.12
2463 Older Version   : 00.00.04.10
247
2481.	Change the AEN sys PD update from scsi_scan to
249	scsi_add_device and scsi_remove_device.
2502.	Takeoff the debug print-out in aen_polling routine.
251
2521 Release Date    : Thur.  July 02, 2009 10:12:45 PST 2009 -
253			(emaild-id:megaraidlinux@lsi.com)
254			Bo Yang
255
2562 Current Version : 00.00.04.10
2573 Older Version   : 00.00.04.08
258
2591.	Add the 3 mins timeout during the controller initialize.
2602.	Add the fix for 64bit sense date errors.
261
2621 Release Date    : Tues. May 05, 2009 10:12:45 PST 2009 -
263			(emaild-id:megaraidlinux@lsi.com)
264			Bo Yang
265
2662 Current Version : 00.00.04.08
2673 Older Version   : 00.00.04.06
268
2691.	Add the fix of pending in FW after deleted the logic drives.
2702.	Add the fix of deallocating memory after get pdlist.
271
2721 Release Date    : Tues. March 26, 2009 10:12:45 PST 2009 -
273			(emaild-id:megaraidlinux@lsi.com)
274			Bo Yang
275
2762 Current Version : 00.00.04.06
2773 Older Version   : 00.00.04.04
278
2791.	Add the fix of the driver cmd empty fix of the driver cmd empty.
2802.	Add the fix of the driver MSM AEN CMD cause the system slow.
281
2821 Release Date    : Tues. March 03, 2009 10:12:45 PST 2009 -
283			(emaild-id:megaraidlinux@lsi.com)
284			Bo Yang
285
2862 Current Version : 00.00.04.04
2873 Older Version   : 00.00.04.01
288
2891.	Add the Tape drive fix to the driver: If the command is for
290	the tape device, set the pthru timeout to the os layer timeout value.
291
2922.	Add Poll_wait mechanism to Gen-2 Linux driv.
293		In the aen handler, driver needs to wakeup poll handler similar to
294		the way it raises SIGIO.
295
2963.	Add new controller new SAS2 support to the driver.
297
2984.	Report the unconfigured PD (system PD) to OS.
299
3005.	Add the IEEE SGL support to the driver
301
3026.	Reasign the Application cmds to SAS2 controller
303
3041 Release Date    : Thur.July. 24 11:41:51 PST 2008 -
305                       (emaild-id:megaraidlinux@lsi.com)
306                       Sumant Patro
307                       Bo Yang
308
3092 Current Version : 00.00.04.01
3103 Older Version   : 00.00.03.22
311
3121. Add the new controller (0078, 0079) support to the driver
313       Those controllers are LSI's next generatation(gen2) SAS controllers.
314
3151 Release Date    : Mon.June. 23 10:12:45 PST 2008 -
316                       (emaild-id:megaraidlinux@lsi.com)
317                       Sumant Patro
318                       Bo Yang
319
3202 Current Version : 00.00.03.22
3213 Older Version   : 00.00.03.20
322
3231. Add shutdown DCMD cmd to the shutdown routine to make FW shutdown proper.
3242. Unexpected interrupt occurs in HWR Linux driver, add the dumy readl pci flush will fix this issue.
325
3261 Release Date    : Mon. March 10 11:02:31 PDT 2008 -
327			(emaild-id:megaraidlinux@lsi.com)
328			Sumant Patro
329			Bo Yang
330
3312 Current Version : 00.00.03.20-RC1
3323 Older Version   : 00.00.03.16
333
3341. Rollback the sense info implementation
335	Sense buffer ptr data type in the ioctl path is reverted back
336	to u32 * as in previous versions of driver.
337
3382. Fixed the driver frame count.
339	When Driver sent wrong frame count to firmware.  As this
340	particular command is sent to drive, FW is seeing continuous
341	chip resets and so the command will timeout.
342
3433. Add the new controller(1078DE) support to the driver
344	and Increase the max_wait to 60 from 10 in the controller
345	operational status.  With this max_wait increase, driver will
346	make sure the FW will 	finish the pending cmd for KDUMP case.
347
3481 Release Date    : Thur. Nov. 07 16:30:43 PST 2007 -
349			(emaild-id:megaraidlinux@lsi.com)
350			Sumant Patro
351			Bo Yang
352
3532 Current Version : 00.00.03.16
3543 Older Version   : 00.00.03.15
355
3561. Increased MFI_POLL_TIMEOUT_SECS to 60 seconds from 10. FW may take
357	a max of 60 seconds to respond to the INIT cmd.
358
3591 Release Date    : Fri. Sep. 07 16:30:43 PST 2007 -
360			(emaild-id:megaraidlinux@lsi.com)
361			Sumant Patro
362			Bo Yang
363
3642 Current Version : 00.00.03.15
3653 Older Version   : 00.00.03.14
366
3671. Added module parameter "poll_mode_io" to support for "polling"
368	(reduced interrupt operation).  In this mode, IO completion
369	interrupts are delayed. At the end of initiating IOs, the
370	driver schedules for cmd completion if there are pending cmds
371	to be completed.  A timer-based interrupt has also been added
372	to prevent IO completion processing from being delayed
373	indefinitely in the case that no new IOs are initiated.
374
3751 Release Date    : Fri. Sep. 07 16:30:43 PST 2007 -
376			(emaild-id:megaraidlinux@lsi.com)
377			Sumant Patro
378			Bo Yang
379
3802 Current Version : 00.00.03.14
3813 Older Version   : 00.00.03.13
382
3831. Setting the max_sectors_per_req based on max SGL supported by the
384	FW. Prior versions calculated this value from controller info
385	(max_sectors_1, max_sectors_2). For certain controllers/FW,
386	this was resulting in a value greater than max SGL supported
387	by the FW. Issue was first reported by users running LUKS+XFS
388	with megaraid_sas.  Thanks to RB for providing the logs and
389	duplication steps that helped to get to the root cause of the
390	issue.  2. Increased MFI_POLL_TIMEOUT_SECS to 60 seconds from
391	10. FW may take a max of 60 seconds to respond to the INIT
392	cmd.
393
3941 Release Date    : Fri. June. 15 16:30:43 PST 2007 -
395			(emaild-id:megaraidlinux@lsi.com)
396			Sumant Patro
397			Bo Yang
398
3992 Current Version : 00.00.03.13
4003 Older Version   : 00.00.03.12
401
4021. Added the megasas_reset_timer routine to intercept cmd timeout and throttle io.
403
404On Fri, 2007-03-16 at 16:44 -0600, James Bottomley wrote:
405It looks like megaraid_sas at least needs this to throttle its commands
406> as they begin to time out.  The code keeps the existing transport
407> template use of eh_timed_out (and allows the transport to override the
408> host if they both have this callback).
409>
410> James
411
4121 Release Date    : Sat May. 12 16:30:43 PST 2007 -
413			(emaild-id:megaraidlinux@lsi.com)
414			Sumant Patro
415			Bo Yang
416
4172 Current Version : 00.00.03.12
4183 Older Version   : 00.00.03.11
419
4201.  When MegaSAS driver receives reset call from OS, driver waits in reset
421routine for max 3 minutes for all pending command completion. Now driver will
422call completion routine every 5 seconds from the reset routine instead of
423waiting for depending on cmd completion from isr path.
424
4251 Release Date    : Mon Apr. 30 10:25:52 PST 2007 -
426			(emaild-id:megaraidlinux@lsi.com)
427			Sumant Patro
428			Bo Yang
429
4302 Current Version : 00.00.03.11
4313 Older Version   : 00.00.03.09
432
433	1. Memory Manager for IOCTL removed for 2.6 kernels.
434	   pci_alloc_consistent replaced by dma_alloc_coherent. With this
435	   change there is no need of memory manager in the driver code
436
437	On Wed, 2007-02-07 at 13:30 -0800, Andrew Morton wrote:
438	> I suspect all this horror is due to stupidity in the DMA API.
439	>
440	> pci_alloc_consistent() just goes and assumes GFP_ATOMIC, whereas
441	> the caller (megasas_mgmt_fw_ioctl) would have been perfectly happy
442	> to use GFP_KERNEL.
443	>
444	> I bet this fixes it
445
446	It does, but the DMA API was expanded to cope with this exact case, so
447	use dma_alloc_coherent() directly in the megaraid code instead.  The dev
448	is just &pci_dev->dev.
449
450	James <James.Bottomley@SteelEye.com>
451
452	3. SYNCHRONIZE_CACHE is not supported by FW and thus blocked by driver.
453	4. Hibernation support added
454	5. Performing diskdump while running IO in RHEL 4 was failing. Fixed.
455
4561 Release Date    : Fri Feb. 09 14:36:28 PST 2007 -
457			(emaild-id:megaraidlinux@lsi.com)
458			Sumant Patro
459			Bo Yang
460
4612 Current Version : 00.00.03.09
4623 Older Version   : 00.00.03.08
463
464i.	Under heavy IO mid-layer prints "DRIVER_TIMEOUT" errors
465
466	The driver now waits for 10 seconds to elapse instead of 5 (as in
467	previous release) to resume IO.
468
4691 Release Date    : Mon Feb. 05 11:35:24 PST 2007 -
470			(emaild-id:megaraidlinux@lsi.com)
471			Sumant Patro
472			Bo Yang
4732 Current Version : 00.00.03.08
4743 Older Version   : 00.00.03.07
475
476i.	Under heavy IO mid-layer prints "DRIVER_TIMEOUT" errors
477
478	Fix:	The driver is now throttling IO.
479	Checks added in megasas_queue_command to know if FW is able to
480	process commands within timeout period. If number of retries
481	is 2 or greater,the driver stops sending cmd to FW temporarily. IO is
482	resumed if pending cmd count reduces to 16 or 5 seconds has elapsed
483	from the time cmds were last sent to FW.
484
485ii.	FW enables WCE bit in Mode Sense cmd for drives that are configured
486	as WriteBack. The OS may send "SYNCHRONIZE_CACHE" cmd when Logical
487	Disks are exposed with WCE=1. User is advised to enable Write Back
488	mode only when the controller has battery backup. At this time
489	Synhronize cache is not supported by the FW. Driver will short-cycle
490	the cmd and return success without sending down to FW.
491
4921 Release Date    : Sun Jan. 14 11:21:32 PDT 2007 -
493		 Sumant Patro <Sumant.Patro@lsil.com>/Bo Yang
4942 Current Version : 00.00.03.07
4953 Older Version   : 00.00.03.06
496
497i.	bios_param entry added in scsi_host_template that returns disk geometry
498	information.
499
5001 Release Date    : Fri Oct 20 11:21:32 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>/Bo Yang
5012 Current Version : 00.00.03.06
5023 Older Version   : 00.00.03.05
503
5041. Added new memory management module to support the IOCTL memory allocation. For IOCTL we try to allocate from the memory pool created during driver initialization. If mem pool is empty then we allocate at run time.
5052. Added check in megasas_queue_command and dpc/isr routine to see if we have already declared adapter dead
506   (hw_crit_error=1). If hw_crit_error==1, now we donot accept any processing of pending cmds/accept any cmd from OS
507
5081 Release Date    : Mon Oct 02 11:21:32 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
5092 Current Version : 00.00.03.05
5103 Older Version   : 00.00.03.04
511
512i.	PCI_DEVICE macro used
513
514	Convert the pci_device_id-table of the megaraid_sas-driver to the PCI_DEVICE-macro, to safe some lines.
515
516		- Henrik Kretzschmar <henne@nachtwindheim.de>
517ii.	All compiler warnings removed
518iii.	megasas_ctrl_info struct reverted to 3.02 release
519iv.	Default value of megasas_dbg_lvl set to 0
520v.	Removing in megasas_exit the sysfs entry created for megasas_dbg_lvl
521vi.	In megasas_teardown_frame_pool(), cmd->frame was passed instead of
522	cmd->sense to pci_pool_free. Fixed. Bug was pointed out by
523	Eric Sesterhenn
524
5251 Release Date    : Wed Sep 13 14:22:51 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
5262 Current Version : 00.00.03.04
5273 Older Version   : 00.00.03.03
528
529i.	Added Reboot notify
530ii.	Reduced by 1 max cmds sent to FW from Driver to make the reply_q_sz same
531	as Max Cmds FW can support
532
5331 Release Date    : Tue Aug 22 16:33:14 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
5342 Current Version : 00.00.03.03
5353 Older Version   : 00.00.03.02
536
537i.	Send stop adapter to FW & Dump pending FW cmds before declaring adapter dead.
538	New varible added to set dbg level.
539ii.	Disable interrupt made as fn pointer as they are different for 1068 / 1078
540iii.	Frame count optimization. Main frame can contain 2 SGE for 64 bit SGLs and
541	3 SGE for 32 bit SGL
542iv.	Tasklet added for cmd completion
543v.	If FW in operational state before firing INIT, now we send RESET Flag to FW instead of just READY. This is used to do soft reset.
544vi.	megasas_ctrl_prop structure updated (based on FW struct)
545vii.	Added print : FW now in Ready State during initialization
546
5471 Release Date    : Sun Aug 06 22:49:52 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
5482 Current Version : 00.00.03.02
5493 Older Version   : 00.00.03.01
550
551i.	Added FW tranistion state for Hotplug scenario
552
5531 Release Date    : Sun May 14 22:49:52 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
5542 Current Version : 00.00.03.01
5553 Older Version   : 00.00.02.04
556
557i.	Added support for ZCR controller.
558
559		New device id 0x413 added.
560
561ii.	Bug fix : Disable controller interrupt before firing INIT cmd to FW.
562
563		Interrupt is enabled after required initialization is over.
564		This is done to ensure that driver is ready to handle interrupts when
565		it is generated by the controller.
566
567		-Sumant Patro <Sumant.Patro@lsil.com>
568
5691 Release Date    : Wed Feb 03 14:31:44 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
5702 Current Version : 00.00.02.04
5713 Older Version   : 00.00.02.04
572
573i.	Remove superflous instance_lock
574
575	gets rid of the otherwise superflous instance_lock and avoids an unsave
576	unsynchronized access in the error handler.
577
578		- Christoph Hellwig <hch@lst.de>
579
580
5811 Release Date    : Wed Feb 03 14:31:44 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
5822 Current Version : 00.00.02.04
5833 Older Version   : 00.00.02.04
584
585i.	Support for 1078 type (ppc IOP) controller, device id : 0x60 added.
586	During initialization, depending on the device id, the template members
587	are initialized with function pointers specific to the ppc or
588	xscale controllers.
589
590		-Sumant Patro <Sumant.Patro@lsil.com>
591
5921 Release Date    : Fri Feb 03 14:16:25 PST 2006 - Sumant Patro
593							<Sumant.Patro@lsil.com>
5942 Current Version : 00.00.02.04
5953 Older Version   : 00.00.02.02
596i.	Register 16 byte CDB capability with scsi midlayer
597
598	"This patch properly registers the 16 byte command length capability of the
599	megaraid_sas controlled hardware with the scsi midlayer. All megaraid_sas
600	hardware supports 16 byte CDB's."
601
602		-Joshua Giles <joshua_giles@dell.com>
603
6041 Release Date    : Mon Jan 23 14:09:01 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
6052 Current Version : 00.00.02.02
6063 Older Version   : 00.00.02.01
607
608i.	New template defined to represent each family of controllers (identified by processor used).
609	The template will have defintions that will be initialised to appropritae values for a specific family of controllers. The template definition has four function pointers. During driver initialisation the function pointers will be set based on the controller family type. This change is done to support new controllers that has different processors and thus different register set.
610
611		-Sumant Patro <Sumant.Patro@lsil.com>
612
6131 Release Date    : Mon Dec 19 14:36:26 PST 2005 - Sumant Patro <Sumant.Patro@lsil.com>
6142 Current Version : 00.00.02.00-rc4
6153 Older Version   : 00.00.02.01
616
617i.	Code reorganized to remove code duplication in megasas_build_cmd.
618
619	"There's a lot of duplicate code megasas_build_cmd.  Move that out of the different codepathes and merge the reminder of megasas_build_cmd into megasas_queue_command"
620
621		- Christoph Hellwig <hch@lst.de>
622
623ii.	Defined MEGASAS_IOC_FIRMWARE32 for code paths that handles 32 bit applications in 64 bit systems.
624
625	"MEGASAS_IOC_FIRMWARE can't be redefined if CONFIG_COMPAT is set, we need to define a MEGASAS_IOC_FIRMWARE32 define so native binaries continue to work"
626
627		- Christoph Hellwig <hch@lst.de>
628