linux/Documentation/scsi/ChangeLog.megaraid_sas
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   1Release Date    : Mon. Mar 19, 2012 17:00:00 PST 2012 -
   2                        (emaild-id:megaraidlinux@lsi.com)
   3                        Adam Radford
   4Current Version : 00.00.06.15-rc1
   5Old Version     : 00.00.06.14-rc1
   6    1. Optimize HostMSIxVectors setting.
   7    2. Add fpRead/WriteCapable, fpRead/WriteAcrossStripe checks.
   8-------------------------------------------------------------------------------
   9Release Date    : Fri. Jan 6, 2012 17:00:00 PST 2010 -
  10                        (emaild-id:megaraidlinux@lsi.com)
  11                        Adam Radford
  12Current Version : 00.00.06.14-rc1
  13Old Version     : 00.00.06.12-rc1
  14    1. Fix reglockFlags for degraded raid5/6 for MR 9360/9380.
  15    2. Mask off flags in ioctl path to prevent memory scribble with older
  16       MegaCLI versions.
  17    3. Remove poll_mode_io module paramater, sysfs node, and associated code.
  18-------------------------------------------------------------------------------
  19Release Date    : Wed. Oct 5, 2011 17:00:00 PST 2010 -
  20                        (emaild-id:megaraidlinux@lsi.com)
  21                        Adam Radford
  22Current Version : 00.00.06.12-rc1
  23Old Version     : 00.00.05.40-rc1
  24    1. Continue booting immediately if FW in FAULT at driver load time.
  25    2. Increase default cmds per lun to 256.
  26    3. Fix mismatch in megasas_reset_fusion() mutex lock-unlock.
  27    4. Remove some un-necessary code.
  28    5. Clear state change interrupts for Fusion/Invader.
  29    6. Clear FUSION_IN_RESET before enabling interrupts.
  30    7. Add support for MegaRAID 9360/9380 12GB/s controllers.
  31    8. Add multiple MSI-X vector/multiple reply queue support.
  32    9. Add driver workaround for PERC5/1068 kdump kernel panic.
  33-------------------------------------------------------------------------------
  34Release Date    : Tue. Jul 26, 2011 17:00:00 PST 2010 -
  35                        (emaild-id:megaraidlinux@lsi.com)
  36                        Adam Radford
  37Current Version : 00.00.05.40-rc1
  38Old Version     : 00.00.05.38-rc1
  39    1. Fix FastPath I/O to work with degraded RAID 1.
  40    2. Add .change_queue_depth support.
  41-------------------------------------------------------------------------------
  42Release Date    : Wed. May 11, 2011 17:00:00 PST 2010 -
  43                        (emaild-id:megaraidlinux@lsi.com)
  44                        Adam Radford
  45Current Version : 00.00.05.38-rc1
  46Old Version     : 00.00.05.34-rc1
  47    1. Remove MSI-X black list, use MFI_REG_STATE.ready.msiEnable.
  48    2. Remove un-used function megasas_return_cmd_for_smid().
  49    3. Check MFI_REG_STATE.fault.resetAdapter in megasas_reset_fusion().
  50    4. Disable interrupts/free_irq() in megasas_shutdown().
  51    5. Fix bug where AENs could be lost in probe() and resume().
  52    6. Convert 6,10,12 byte CDB's to 16 byte CDB for large LBA's for FastPath
  53       IO.
  54    7. Add 1078 OCR support.
  55-------------------------------------------------------------------------------
  56Release Date    : Thu. Feb 24, 2011 17:00:00 PST 2010 -
  57                        (emaild-id:megaraidlinux@lsi.com)
  58                        Adam Radford
  59Current Version : 00.00.05.34-rc1
  60Old Version     : 00.00.05.29-rc1
  61    1. Fix some failure gotos from megasas_probe_one(), etc.
  62    2. Add missing check_and_restore_queue_depth() call in
  63       complete_cmd_fusion().
  64    3. Enable MSI-X before calling megasas_init_fw().
  65    4. Call tasklet_schedule() even if outbound_intr_status == 0 for MFI based
  66       boards in MSI-X mode.
  67    5. Fix megasas_probe_one() to clear PCI_MSIX_FLAGS_ENABLE in msi control
  68       register in kdump kernel.
  69    6. Fix megasas_get_cmd() to only print "Command pool empty" if
  70       megasas_dbg_lvl is set.
  71    7. Fix megasas_build_dcdb_fusion() to not filter by TYPE_DISK.
  72    8. Fix megasas_build_dcdb_fusion() to use io_request->LUN[1] field.
  73    9. Add MR_EVT_CFG_CLEARED to megasas_aen_polling().
  74    10. Fix tasklet_init() in megasas_init_fw() to use instancet->tasklet.
  75    11. Fix fault state handling in megasas_transition_to_ready().
  76    12. Fix max_sectors setting for IEEE SGL's.
  77    13. Fix iMR OCR support to work correctly.
  78-------------------------------------------------------------------------------
  79Release Date    : Tues.  Dec 14, 2010 17:00:00 PST 2010 -
  80                        (emaild-id:megaraidlinux@lsi.com)
  81                        Adam Radford
  82Current Version : 00.00.05.29-rc1
  83Old Version     : 00.00.04.31-rc1
  84    1. Rename megaraid_sas.c to megaraid_sas_base.c.
  85    2. Update GPL headers.
  86    3. Add MSI-X support and 'msix_disable' module parameter.
  87    4. Use lowest memory bar (for SR-IOV VF support).
  88    5. Add struct megasas_instance_temlate changes, and change all code to use
  89       new instance entries:
  90
  91       irqreturn_t (*service_isr )(int irq, void *devp);
  92       void (*tasklet)(unsigned long);
  93       u32 (*init_adapter)(struct megasas_instance *);
  94       u32 (*build_and_issue_cmd) (struct megasas_instance *,
  95       struct scsi_cmnd *);
  96       void (*issue_dcmd) (struct megasas_instance *instance,
  97                              struct megasas_cmd *cmd);
  98
  99   6. Add code to support MegaRAID 9265/9285 controllers device id (0x5b).
 100-------------------------------------------------------------------------------
 1011 Release Date    : Thur.  May 03, 2010 09:12:45 PST 2009 -
 102                        (emaild-id:megaraidlinux@lsi.com)
 103                        Bo Yang
 104
 1052 Current Version : 00.00.04.31-rc1
 1063 Older Version   : 00.00.04.17.1-rc1
 107
 1081.      Add the Online Controller Reset (OCR) to the Driver.
 109        OCR is the new feature for megaraid_sas driver which
 110        will allow the fw to do the chip reset which will not
 111        affact the OS behavious.
 112
 113        To add the OCR support, driver need to do:
 114                a). reset the controller chips -- Xscale and Gen2 which
 115                will change the function calls and add the reset function
 116                related to this two chips.
 117
 118                b). during the reset, driver will store the pending cmds
 119                which not returned by FW to driver's pending queue.  Driver
 120                will re-issue those pending cmds again to FW after the OCR
 121                finished.
 122
 123                c). In driver's timeout routine, driver will report to
 124                OS as reset. Also driver's queue routine will block the
 125                cmds until the OCR finished.
 126
 127                d). in Driver's ISR routine, if driver get the FW state as
 128                state change, FW in Failure status and FW support online controller
 129                reset (OCR), driver will start to do the controller reset.
 130
 131                e). In driver's IOCTL routine, the application cmds will wait for the
 132                OCR to finish, then issue the cmds to FW.
 133
 134                f). Before driver kill adapter, driver will do last chance of
 135                OCR to see if driver can bring back the FW.
 136
 1372.      Add the support update flag to the driver to tell LSI megaraid_sas
 138        application which driver will support the device update.  So application
 139        will not need to do the device update after application add/del the device
 140        from the system.
 1413.      In driver's timeout routine, driver will do three time reset if fw is in
 142        failed state.  Driver will kill adapter if can't bring back FW after the
 143        this three times reset.
 1444.      Add the input parameter max_sectors to 1MB support to our GEN2 controller.
 145        customer can use the input paramenter max_sectors to add 1MB support to GEN2
 146        controller.
 147
 1481 Release Date    : Thur.  Oct 29, 2009 09:12:45 PST 2009 -
 149                        (emaild-id:megaraidlinux@lsi.com)
 150                        Bo Yang
 151
 1522 Current Version : 00.00.04.17.1-rc1
 1533 Older Version   : 00.00.04.12
 154
 1551.      Add the pad_0 in mfi frame structure to 0 to fix the
 156        context value larger than 32bit value issue.
 157
 1582.      Add the logic drive list to the driver.  Driver will
 159        keep the logic drive list internal after driver load.
 160
 1613.      driver fixed the device update issue after get the AEN
 162        PD delete/ADD, LD add/delete from FW.
 163
 1641 Release Date    : Tues.  July 28, 2009 10:12:45 PST 2009 -
 165                        (emaild-id:megaraidlinux@lsi.com)
 166                        Bo Yang
 167
 1682 Current Version : 00.00.04.12
 1693 Older Version   : 00.00.04.10
 170
 1711.      Change the AEN sys PD update from scsi_scan to
 172        scsi_add_device and scsi_remove_device.
 1732.      Takeoff the debug print-out in aen_polling routine.
 174
 1751 Release Date    : Thur.  July 02, 2009 10:12:45 PST 2009 -
 176                        (emaild-id:megaraidlinux@lsi.com)
 177                        Bo Yang
 178
 1792 Current Version : 00.00.04.10
 1803 Older Version   : 00.00.04.08
 181
 1821.      Add the 3 mins timeout during the controller initialize.
 1832.      Add the fix for 64bit sense date errors.
 184
 1851 Release Date    : Tues. May 05, 2009 10:12:45 PST 2009 -
 186                        (emaild-id:megaraidlinux@lsi.com)
 187                        Bo Yang
 188
 1892 Current Version : 00.00.04.08
 1903 Older Version   : 00.00.04.06
 191
 1921.      Add the fix of pending in FW after deleted the logic drives.
 1932.      Add the fix of deallocating memory after get pdlist.
 194
 1951 Release Date    : Tues. March 26, 2009 10:12:45 PST 2009 -
 196                        (emaild-id:megaraidlinux@lsi.com)
 197                        Bo Yang
 198
 1992 Current Version : 00.00.04.06
 2003 Older Version   : 00.00.04.04
 201
 2021.      Add the fix of the driver cmd empty fix of the driver cmd empty.
 2032.      Add the fix of the driver MSM AEN CMD cause the system slow.
 204
 2051 Release Date    : Tues. March 03, 2009 10:12:45 PST 2009 -
 206                        (emaild-id:megaraidlinux@lsi.com)
 207                        Bo Yang
 208
 2092 Current Version : 00.00.04.04
 2103 Older Version   : 00.00.04.01
 211
 2121.      Add the Tape drive fix to the driver: If the command is for
 213        the tape device, set the pthru timeout to the os layer timeout value.
 214
 2152.      Add Poll_wait mechanism to Gen-2 Linux driv.
 216                In the aen handler, driver needs to wakeup poll handler similar to
 217                the way it raises SIGIO.
 218
 2193.      Add new controller new SAS2 support to the driver.
 220
 2214.      Report the unconfigured PD (system PD) to OS.
 222
 2235.      Add the IEEE SGL support to the driver
 224
 2256.      Reasign the Application cmds to SAS2 controller
 226
 2271 Release Date    : Thur.July. 24 11:41:51 PST 2008 -
 228                       (emaild-id:megaraidlinux@lsi.com)
 229                       Sumant Patro
 230                       Bo Yang
 231
 2322 Current Version : 00.00.04.01
 2333 Older Version   : 00.00.03.22
 234
 2351. Add the new controller (0078, 0079) support to the driver
 236       Those controllers are LSI's next generatation(gen2) SAS controllers.
 237
 2381 Release Date    : Mon.June. 23 10:12:45 PST 2008 -
 239                       (emaild-id:megaraidlinux@lsi.com)
 240                       Sumant Patro
 241                       Bo Yang
 242
 2432 Current Version : 00.00.03.22
 2443 Older Version   : 00.00.03.20
 245
 2461. Add shutdown DCMD cmd to the shutdown routine to make FW shutdown proper.
 2472. Unexpected interrupt occurs in HWR Linux driver, add the dumy readl pci flush will fix this issue.
 248
 2491 Release Date    : Mon. March 10 11:02:31 PDT 2008 -
 250                        (emaild-id:megaraidlinux@lsi.com)
 251                        Sumant Patro
 252                        Bo Yang
 253
 2542 Current Version : 00.00.03.20-RC1
 2553 Older Version   : 00.00.03.16
 256
 2571. Rollback the sense info implementation
 258        Sense buffer ptr data type in the ioctl path is reverted back
 259        to u32 * as in previous versions of driver.
 260
 2612. Fixed the driver frame count.
 262        When Driver sent wrong frame count to firmware.  As this
 263        particular command is sent to drive, FW is seeing continuous
 264        chip resets and so the command will timeout.
 265
 2663. Add the new controller(1078DE) support to the driver
 267        and Increase the max_wait to 60 from 10 in the controller
 268        operational status.  With this max_wait increase, driver will
 269        make sure the FW will   finish the pending cmd for KDUMP case.
 270
 2711 Release Date    : Thur. Nov. 07 16:30:43 PST 2007 -
 272                        (emaild-id:megaraidlinux@lsi.com)
 273                        Sumant Patro
 274                        Bo Yang
 275
 2762 Current Version : 00.00.03.16
 2773 Older Version   : 00.00.03.15
 278
 2791. Increased MFI_POLL_TIMEOUT_SECS to 60 seconds from 10. FW may take
 280        a max of 60 seconds to respond to the INIT cmd.
 281
 2821 Release Date    : Fri. Sep. 07 16:30:43 PST 2007 -
 283                        (emaild-id:megaraidlinux@lsi.com)
 284                        Sumant Patro
 285                        Bo Yang
 286
 2872 Current Version : 00.00.03.15
 2883 Older Version   : 00.00.03.14
 289
 2901. Added module parameter "poll_mode_io" to support for "polling"
 291        (reduced interrupt operation).  In this mode, IO completion
 292        interrupts are delayed. At the end of initiating IOs, the
 293        driver schedules for cmd completion if there are pending cmds
 294        to be completed.  A timer-based interrupt has also been added
 295        to prevent IO completion processing from being delayed
 296        indefinitely in the case that no new IOs are initiated.
 297
 2981 Release Date    : Fri. Sep. 07 16:30:43 PST 2007 -
 299                        (emaild-id:megaraidlinux@lsi.com)
 300                        Sumant Patro
 301                        Bo Yang
 302
 3032 Current Version : 00.00.03.14
 3043 Older Version   : 00.00.03.13
 305
 3061. Setting the max_sectors_per_req based on max SGL supported by the
 307        FW. Prior versions calculated this value from controller info
 308        (max_sectors_1, max_sectors_2). For certain controllers/FW,
 309        this was resulting in a value greater than max SGL supported
 310        by the FW. Issue was first reported by users running LUKS+XFS
 311        with megaraid_sas.  Thanks to RB for providing the logs and
 312        duplication steps that helped to get to the root cause of the
 313        issue.  2. Increased MFI_POLL_TIMEOUT_SECS to 60 seconds from
 314        10. FW may take a max of 60 seconds to respond to the INIT
 315        cmd.
 316
 3171 Release Date    : Fri. June. 15 16:30:43 PST 2007 -
 318                        (emaild-id:megaraidlinux@lsi.com)
 319                        Sumant Patro
 320                        Bo Yang
 321
 3222 Current Version : 00.00.03.13
 3233 Older Version   : 00.00.03.12
 324
 3251. Added the megasas_reset_timer routine to intercept cmd timeout and throttle io.
 326
 327On Fri, 2007-03-16 at 16:44 -0600, James Bottomley wrote:
 328It looks like megaraid_sas at least needs this to throttle its commands
 329> as they begin to time out.  The code keeps the existing transport
 330> template use of eh_timed_out (and allows the transport to override the
 331> host if they both have this callback).
 332>
 333> James
 334
 3351 Release Date    : Sat May. 12 16:30:43 PST 2007 -
 336                        (emaild-id:megaraidlinux@lsi.com)
 337                        Sumant Patro
 338                        Bo Yang
 339
 3402 Current Version : 00.00.03.12
 3413 Older Version   : 00.00.03.11
 342
 3431.  When MegaSAS driver receives reset call from OS, driver waits in reset
 344routine for max 3 minutes for all pending command completion. Now driver will
 345call completion routine every 5 seconds from the reset routine instead of
 346waiting for depending on cmd completion from isr path.
 347
 3481 Release Date    : Mon Apr. 30 10:25:52 PST 2007 -
 349                        (emaild-id:megaraidlinux@lsi.com)
 350                        Sumant Patro
 351                        Bo Yang
 352
 3532 Current Version : 00.00.03.11
 3543 Older Version   : 00.00.03.09
 355
 356        1. Memory Manager for IOCTL removed for 2.6 kernels.
 357           pci_alloc_consistent replaced by dma_alloc_coherent. With this
 358           change there is no need of memory manager in the driver code
 359
 360        On Wed, 2007-02-07 at 13:30 -0800, Andrew Morton wrote:
 361        > I suspect all this horror is due to stupidity in the DMA API.
 362        >
 363        > pci_alloc_consistent() just goes and assumes GFP_ATOMIC, whereas
 364        > the caller (megasas_mgmt_fw_ioctl) would have been perfectly happy
 365        > to use GFP_KERNEL.
 366        >
 367        > I bet this fixes it
 368
 369        It does, but the DMA API was expanded to cope with this exact case, so
 370        use dma_alloc_coherent() directly in the megaraid code instead.  The dev
 371        is just &pci_dev->dev.
 372
 373        James <James.Bottomley@SteelEye.com>
 374
 375        3. SYNCHRONIZE_CACHE is not supported by FW and thus blocked by driver.
 376        4. Hibernation support added
 377        5. Performing diskdump while running IO in RHEL 4 was failing. Fixed.
 378
 3791 Release Date    : Fri Feb. 09 14:36:28 PST 2007 -
 380                        (emaild-id:megaraidlinux@lsi.com)
 381                        Sumant Patro
 382                        Bo Yang
 383
 3842 Current Version : 00.00.03.09
 3853 Older Version   : 00.00.03.08
 386
 387i.      Under heavy IO mid-layer prints "DRIVER_TIMEOUT" errors
 388
 389        The driver now waits for 10 seconds to elapse instead of 5 (as in
 390        previous release) to resume IO.
 391
 3921 Release Date    : Mon Feb. 05 11:35:24 PST 2007 -
 393                        (emaild-id:megaraidlinux@lsi.com)
 394                        Sumant Patro
 395                        Bo Yang
 3962 Current Version : 00.00.03.08
 3973 Older Version   : 00.00.03.07
 398
 399i.      Under heavy IO mid-layer prints "DRIVER_TIMEOUT" errors
 400
 401        Fix:    The driver is now throttling IO.
 402        Checks added in megasas_queue_command to know if FW is able to
 403        process commands within timeout period. If number of retries
 404        is 2 or greater,the driver stops sending cmd to FW temporarily. IO is
 405        resumed if pending cmd count reduces to 16 or 5 seconds has elapsed
 406        from the time cmds were last sent to FW.
 407
 408ii.     FW enables WCE bit in Mode Sense cmd for drives that are configured
 409        as WriteBack. The OS may send "SYNCHRONIZE_CACHE" cmd when Logical
 410        Disks are exposed with WCE=1. User is advised to enable Write Back
 411        mode only when the controller has battery backup. At this time
 412        Synhronize cache is not supported by the FW. Driver will short-cycle
 413        the cmd and return success without sending down to FW.
 414
 4151 Release Date    : Sun Jan. 14 11:21:32 PDT 2007 -
 416                 Sumant Patro <Sumant.Patro@lsil.com>/Bo Yang
 4172 Current Version : 00.00.03.07
 4183 Older Version   : 00.00.03.06
 419
 420i.      bios_param entry added in scsi_host_template that returns disk geometry
 421        information.
 422
 4231 Release Date    : Fri Oct 20 11:21:32 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>/Bo Yang
 4242 Current Version : 00.00.03.06
 4253 Older Version   : 00.00.03.05
 426
 4271. 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.
 4282. Added check in megasas_queue_command and dpc/isr routine to see if we have already declared adapter dead
 429   (hw_crit_error=1). If hw_crit_error==1, now we donot accept any processing of pending cmds/accept any cmd from OS
 430
 4311 Release Date    : Mon Oct 02 11:21:32 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
 4322 Current Version : 00.00.03.05
 4333 Older Version   : 00.00.03.04
 434
 435i.      PCI_DEVICE macro used
 436
 437        Convert the pci_device_id-table of the megaraid_sas-driver to the PCI_DEVICE-macro, to safe some lines.
 438
 439                - Henrik Kretzschmar <henne@nachtwindheim.de>
 440ii.     All compiler warnings removed
 441iii.    megasas_ctrl_info struct reverted to 3.02 release
 442iv.     Default value of megasas_dbg_lvl set to 0
 443v.      Removing in megasas_exit the sysfs entry created for megasas_dbg_lvl
 444vi.     In megasas_teardown_frame_pool(), cmd->frame was passed instead of
 445        cmd->sense to pci_pool_free. Fixed. Bug was pointed out by
 446        Eric Sesterhenn
 447
 4481 Release Date    : Wed Sep 13 14:22:51 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
 4492 Current Version : 00.00.03.04
 4503 Older Version   : 00.00.03.03
 451
 452i.      Added Reboot notify
 453ii.     Reduced by 1 max cmds sent to FW from Driver to make the reply_q_sz same
 454        as Max Cmds FW can support
 455
 4561 Release Date    : Tue Aug 22 16:33:14 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
 4572 Current Version : 00.00.03.03
 4583 Older Version   : 00.00.03.02
 459
 460i.      Send stop adapter to FW & Dump pending FW cmds before declaring adapter dead.
 461        New varible added to set dbg level.
 462ii.     Disable interrupt made as fn pointer as they are different for 1068 / 1078
 463iii.    Frame count optimization. Main frame can contain 2 SGE for 64 bit SGLs and
 464        3 SGE for 32 bit SGL
 465iv.     Tasklet added for cmd completion
 466v.      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.
 467vi.     megasas_ctrl_prop structure updated (based on FW struct)
 468vii.    Added print : FW now in Ready State during initialization
 469
 4701 Release Date    : Sun Aug 06 22:49:52 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
 4712 Current Version : 00.00.03.02
 4723 Older Version   : 00.00.03.01
 473
 474i.      Added FW tranistion state for Hotplug scenario
 475
 4761 Release Date    : Sun May 14 22:49:52 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
 4772 Current Version : 00.00.03.01
 4783 Older Version   : 00.00.02.04
 479
 480i.      Added support for ZCR controller.
 481
 482                New device id 0x413 added.
 483
 484ii.     Bug fix : Disable controller interrupt before firing INIT cmd to FW.
 485
 486                Interrupt is enabled after required initialization is over.
 487                This is done to ensure that driver is ready to handle interrupts when
 488                it is generated by the controller.
 489
 490                -Sumant Patro <Sumant.Patro@lsil.com>
 491
 4921 Release Date    : Wed Feb 03 14:31:44 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
 4932 Current Version : 00.00.02.04
 4943 Older Version   : 00.00.02.04 
 495
 496i.      Remove superflous instance_lock
 497
 498        gets rid of the otherwise superflous instance_lock and avoids an unsave 
 499        unsynchronized access in the error handler.
 500
 501                - Christoph Hellwig <hch@lst.de>
 502
 503
 5041 Release Date    : Wed Feb 03 14:31:44 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
 5052 Current Version : 00.00.02.04
 5063 Older Version   : 00.00.02.04 
 507
 508i.      Support for 1078 type (ppc IOP) controller, device id : 0x60 added.
 509        During initialization, depending on the device id, the template members 
 510        are initialized with function pointers specific to the ppc or 
 511        xscale controllers.  
 512
 513                -Sumant Patro <Sumant.Patro@lsil.com>
 514                
 5151 Release Date    : Fri Feb 03 14:16:25 PST 2006 - Sumant Patro 
 516                                                        <Sumant.Patro@lsil.com>
 5172 Current Version : 00.00.02.04
 5183 Older Version   : 00.00.02.02 
 519i.      Register 16 byte CDB capability with scsi midlayer 
 520
 521        "This patch properly registers the 16 byte command length capability of the 
 522        megaraid_sas controlled hardware with the scsi midlayer. All megaraid_sas 
 523        hardware supports 16 byte CDB's."
 524
 525                -Joshua Giles <joshua_giles@dell.com> 
 526
 5271 Release Date    : Mon Jan 23 14:09:01 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
 5282 Current Version : 00.00.02.02
 5293 Older Version   : 00.00.02.01 
 530
 531i.      New template defined to represent each family of controllers (identified by processor used). 
 532        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.
 533
 534                -Sumant Patro <Sumant.Patro@lsil.com>
 535
 5361 Release Date    : Mon Dec 19 14:36:26 PST 2005 - Sumant Patro <Sumant.Patro@lsil.com>
 5372 Current Version : 00.00.02.00-rc4 
 5383 Older Version   : 00.00.02.01 
 539
 540i.      Code reorganized to remove code duplication in megasas_build_cmd. 
 541
 542        "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"
 543
 544                - Christoph Hellwig <hch@lst.de>
 545
 546ii.     Defined MEGASAS_IOC_FIRMWARE32 for code paths that handles 32 bit applications in 64 bit systems.
 547
 548        "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"
 549
 550                - Christoph Hellwig <hch@lst.de>
 551
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