1 Release Date : Sat. Feb 9, 2013 17:00:00 PST 2013 -
2 (emaild-id:megaraidlinux@lsi.com)
4 Current Version : 06.506.00.00-rc1
5 Old Version : 06.504.01.00-rc1
6 1. Add 4k FastPath DIF support.
7 2. Dont load DevHandle unless FastPath enabled.
8 3. Version and Changelog update.
9 -------------------------------------------------------------------------------
10 Release Date : Mon. Oct 1, 2012 17:00:00 PST 2012 -
11 (emaild-id:megaraidlinux@lsi.com)
13 Current Version : 06.504.01.00-rc1
14 Old Version : 00.00.06.18-rc1
15 1. Removed un-needed completion_lock spinlock calls.
16 2. Add module param for configurable MSI-X vector count.
17 3. Load io_request DataLength in bytes.
18 4. Add array boundary check for SystemPD.
19 5. Add SystemPD FastPath support.
20 6. Remove duplicate code.
21 7. Version, Changelog, Copyright update.
22 -------------------------------------------------------------------------------
23 Release Date : Tue. Jun 17, 2012 17:00:00 PST 2012 -
24 (emaild-id:megaraidlinux@lsi.com)
25 Adam Radford/Kashyap Desai
26 Current Version : 00.00.06.18-rc1
27 Old Version : 00.00.06.15-rc1
28 1. Fix Copyright dates.
29 2. Add throttlequeuedepth module parameter.
30 3. Add resetwaittime module parameter.
31 4. Move poll_aen_lock initializer.
32 -------------------------------------------------------------------------------
33 Release Date : Mon. Mar 19, 2012 17:00:00 PST 2012 -
34 (emaild-id:megaraidlinux@lsi.com)
36 Current Version : 00.00.06.15-rc1
37 Old Version : 00.00.06.14-rc1
38 1. Optimize HostMSIxVectors setting.
39 2. Add fpRead/WriteCapable, fpRead/WriteAcrossStripe checks.
40 -------------------------------------------------------------------------------
41 Release Date : Fri. Jan 6, 2012 17:00:00 PST 2010 -
42 (emaild-id:megaraidlinux@lsi.com)
44 Current Version : 00.00.06.14-rc1
45 Old Version : 00.00.06.12-rc1
46 1. Fix reglockFlags for degraded raid5/6 for MR 9360/9380.
47 2. Mask off flags in ioctl path to prevent memory scribble with older
49 3. Remove poll_mode_io module paramater, sysfs node, and associated code.
50 -------------------------------------------------------------------------------
51 Release Date : Wed. Oct 5, 2011 17:00:00 PST 2010 -
52 (emaild-id:megaraidlinux@lsi.com)
54 Current Version : 00.00.06.12-rc1
55 Old Version : 00.00.05.40-rc1
56 1. Continue booting immediately if FW in FAULT at driver load time.
57 2. Increase default cmds per lun to 256.
58 3. Fix mismatch in megasas_reset_fusion() mutex lock-unlock.
59 4. Remove some un-necessary code.
60 5. Clear state change interrupts for Fusion/Invader.
61 6. Clear FUSION_IN_RESET before enabling interrupts.
62 7. Add support for MegaRAID 9360/9380 12GB/s controllers.
63 8. Add multiple MSI-X vector/multiple reply queue support.
64 9. Add driver workaround for PERC5/1068 kdump kernel panic.
65 -------------------------------------------------------------------------------
66 Release Date : Tue. Jul 26, 2011 17:00:00 PST 2010 -
67 (emaild-id:megaraidlinux@lsi.com)
69 Current Version : 00.00.05.40-rc1
70 Old Version : 00.00.05.38-rc1
71 1. Fix FastPath I/O to work with degraded RAID 1.
72 2. Add .change_queue_depth support.
73 -------------------------------------------------------------------------------
74 Release Date : Wed. May 11, 2011 17:00:00 PST 2010 -
75 (emaild-id:megaraidlinux@lsi.com)
77 Current Version : 00.00.05.38-rc1
78 Old Version : 00.00.05.34-rc1
79 1. Remove MSI-X black list, use MFI_REG_STATE.ready.msiEnable.
80 2. Remove un-used function megasas_return_cmd_for_smid().
81 3. Check MFI_REG_STATE.fault.resetAdapter in megasas_reset_fusion().
82 4. Disable interrupts/free_irq() in megasas_shutdown().
83 5. Fix bug where AENs could be lost in probe() and resume().
84 6. Convert 6,10,12 byte CDB's to 16 byte CDB for large LBA's for FastPath
86 7. Add 1078 OCR support.
87 -------------------------------------------------------------------------------
88 Release Date : Thu. Feb 24, 2011 17:00:00 PST 2010 -
89 (emaild-id:megaraidlinux@lsi.com)
91 Current Version : 00.00.05.34-rc1
92 Old Version : 00.00.05.29-rc1
93 1. Fix some failure gotos from megasas_probe_one(), etc.
94 2. Add missing check_and_restore_queue_depth() call in
95 complete_cmd_fusion().
96 3. Enable MSI-X before calling megasas_init_fw().
97 4. Call tasklet_schedule() even if outbound_intr_status == 0 for MFI based
99 5. Fix megasas_probe_one() to clear PCI_MSIX_FLAGS_ENABLE in msi control
100 register in kdump kernel.
101 6. Fix megasas_get_cmd() to only print "Command pool empty" if
102 megasas_dbg_lvl is set.
103 7. Fix megasas_build_dcdb_fusion() to not filter by TYPE_DISK.
104 8. Fix megasas_build_dcdb_fusion() to use io_request->LUN[1] field.
105 9. Add MR_EVT_CFG_CLEARED to megasas_aen_polling().
106 10. Fix tasklet_init() in megasas_init_fw() to use instancet->tasklet.
107 11. Fix fault state handling in megasas_transition_to_ready().
108 12. Fix max_sectors setting for IEEE SGL's.
109 13. Fix iMR OCR support to work correctly.
110 -------------------------------------------------------------------------------
111 Release Date : Tues. Dec 14, 2010 17:00:00 PST 2010 -
112 (emaild-id:megaraidlinux@lsi.com)
114 Current Version : 00.00.05.29-rc1
115 Old Version : 00.00.04.31-rc1
116 1. Rename megaraid_sas.c to megaraid_sas_base.c.
117 2. Update GPL headers.
118 3. Add MSI-X support and 'msix_disable' module parameter.
119 4. Use lowest memory bar (for SR-IOV VF support).
120 5. Add struct megasas_instance_temlate changes, and change all code to use
121 new instance entries:
123 irqreturn_t (*service_isr )(int irq, void *devp);
124 void (*tasklet)(unsigned long);
125 u32 (*init_adapter)(struct megasas_instance *);
126 u32 (*build_and_issue_cmd) (struct megasas_instance *,
128 void (*issue_dcmd) (struct megasas_instance *instance,
129 struct megasas_cmd *cmd);
131 6. Add code to support MegaRAID 9265/9285 controllers device id (0x5b).
132 -------------------------------------------------------------------------------
133 1 Release Date : Thur. May 03, 2010 09:12:45 PST 2009 -
134 (emaild-id:megaraidlinux@lsi.com)
137 2 Current Version : 00.00.04.31-rc1
138 3 Older Version : 00.00.04.17.1-rc1
140 1. Add the Online Controller Reset (OCR) to the Driver.
141 OCR is the new feature for megaraid_sas driver which
142 will allow the fw to do the chip reset which will not
143 affact the OS behavious.
145 To add the OCR support, driver need to do:
146 a). reset the controller chips -- Xscale and Gen2 which
147 will change the function calls and add the reset function
148 related to this two chips.
150 b). during the reset, driver will store the pending cmds
151 which not returned by FW to driver's pending queue. Driver
152 will re-issue those pending cmds again to FW after the OCR
155 c). In driver's timeout routine, driver will report to
156 OS as reset. Also driver's queue routine will block the
157 cmds until the OCR finished.
159 d). in Driver's ISR routine, if driver get the FW state as
160 state change, FW in Failure status and FW support online controller
161 reset (OCR), driver will start to do the controller reset.
163 e). In driver's IOCTL routine, the application cmds will wait for the
164 OCR to finish, then issue the cmds to FW.
166 f). Before driver kill adapter, driver will do last chance of
167 OCR to see if driver can bring back the FW.
169 2. Add the support update flag to the driver to tell LSI megaraid_sas
170 application which driver will support the device update. So application
171 will not need to do the device update after application add/del the device
173 3. In driver's timeout routine, driver will do three time reset if fw is in
174 failed state. Driver will kill adapter if can't bring back FW after the
175 this three times reset.
176 4. Add the input parameter max_sectors to 1MB support to our GEN2 controller.
177 customer can use the input paramenter max_sectors to add 1MB support to GEN2
180 1 Release Date : Thur. Oct 29, 2009 09:12:45 PST 2009 -
181 (emaild-id:megaraidlinux@lsi.com)
184 2 Current Version : 00.00.04.17.1-rc1
185 3 Older Version : 00.00.04.12
187 1. Add the pad_0 in mfi frame structure to 0 to fix the
188 context value larger than 32bit value issue.
190 2. Add the logic drive list to the driver. Driver will
191 keep the logic drive list internal after driver load.
193 3. driver fixed the device update issue after get the AEN
194 PD delete/ADD, LD add/delete from FW.
196 1 Release Date : Tues. July 28, 2009 10:12:45 PST 2009 -
197 (emaild-id:megaraidlinux@lsi.com)
200 2 Current Version : 00.00.04.12
201 3 Older Version : 00.00.04.10
203 1. Change the AEN sys PD update from scsi_scan to
204 scsi_add_device and scsi_remove_device.
205 2. Takeoff the debug print-out in aen_polling routine.
207 1 Release Date : Thur. July 02, 2009 10:12:45 PST 2009 -
208 (emaild-id:megaraidlinux@lsi.com)
211 2 Current Version : 00.00.04.10
212 3 Older Version : 00.00.04.08
214 1. Add the 3 mins timeout during the controller initialize.
215 2. Add the fix for 64bit sense date errors.
217 1 Release Date : Tues. May 05, 2009 10:12:45 PST 2009 -
218 (emaild-id:megaraidlinux@lsi.com)
221 2 Current Version : 00.00.04.08
222 3 Older Version : 00.00.04.06
224 1. Add the fix of pending in FW after deleted the logic drives.
225 2. Add the fix of deallocating memory after get pdlist.
227 1 Release Date : Tues. March 26, 2009 10:12:45 PST 2009 -
228 (emaild-id:megaraidlinux@lsi.com)
231 2 Current Version : 00.00.04.06
232 3 Older Version : 00.00.04.04
234 1. Add the fix of the driver cmd empty fix of the driver cmd empty.
235 2. Add the fix of the driver MSM AEN CMD cause the system slow.
237 1 Release Date : Tues. March 03, 2009 10:12:45 PST 2009 -
238 (emaild-id:megaraidlinux@lsi.com)
241 2 Current Version : 00.00.04.04
242 3 Older Version : 00.00.04.01
244 1. Add the Tape drive fix to the driver: If the command is for
245 the tape device, set the pthru timeout to the os layer timeout value.
247 2. Add Poll_wait mechanism to Gen-2 Linux driv.
248 In the aen handler, driver needs to wakeup poll handler similar to
249 the way it raises SIGIO.
251 3. Add new controller new SAS2 support to the driver.
253 4. Report the unconfigured PD (system PD) to OS.
255 5. Add the IEEE SGL support to the driver
257 6. Reasign the Application cmds to SAS2 controller
259 1 Release Date : Thur.July. 24 11:41:51 PST 2008 -
260 (emaild-id:megaraidlinux@lsi.com)
264 2 Current Version : 00.00.04.01
265 3 Older Version : 00.00.03.22
267 1. Add the new controller (0078, 0079) support to the driver
268 Those controllers are LSI's next generatation(gen2) SAS controllers.
270 1 Release Date : Mon.June. 23 10:12:45 PST 2008 -
271 (emaild-id:megaraidlinux@lsi.com)
275 2 Current Version : 00.00.03.22
276 3 Older Version : 00.00.03.20
278 1. Add shutdown DCMD cmd to the shutdown routine to make FW shutdown proper.
279 2. Unexpected interrupt occurs in HWR Linux driver, add the dumy readl pci flush will fix this issue.
281 1 Release Date : Mon. March 10 11:02:31 PDT 2008 -
282 (emaild-id:megaraidlinux@lsi.com)
286 2 Current Version : 00.00.03.20-RC1
287 3 Older Version : 00.00.03.16
289 1. Rollback the sense info implementation
290 Sense buffer ptr data type in the ioctl path is reverted back
291 to u32 * as in previous versions of driver.
293 2. Fixed the driver frame count.
294 When Driver sent wrong frame count to firmware. As this
295 particular command is sent to drive, FW is seeing continuous
296 chip resets and so the command will timeout.
298 3. Add the new controller(1078DE) support to the driver
299 and Increase the max_wait to 60 from 10 in the controller
300 operational status. With this max_wait increase, driver will
301 make sure the FW will finish the pending cmd for KDUMP case.
303 1 Release Date : Thur. Nov. 07 16:30:43 PST 2007 -
304 (emaild-id:megaraidlinux@lsi.com)
308 2 Current Version : 00.00.03.16
309 3 Older Version : 00.00.03.15
311 1. Increased MFI_POLL_TIMEOUT_SECS to 60 seconds from 10. FW may take
312 a max of 60 seconds to respond to the INIT cmd.
314 1 Release Date : Fri. Sep. 07 16:30:43 PST 2007 -
315 (emaild-id:megaraidlinux@lsi.com)
319 2 Current Version : 00.00.03.15
320 3 Older Version : 00.00.03.14
322 1. Added module parameter "poll_mode_io" to support for "polling"
323 (reduced interrupt operation). In this mode, IO completion
324 interrupts are delayed. At the end of initiating IOs, the
325 driver schedules for cmd completion if there are pending cmds
326 to be completed. A timer-based interrupt has also been added
327 to prevent IO completion processing from being delayed
328 indefinitely in the case that no new IOs are initiated.
330 1 Release Date : Fri. Sep. 07 16:30:43 PST 2007 -
331 (emaild-id:megaraidlinux@lsi.com)
335 2 Current Version : 00.00.03.14
336 3 Older Version : 00.00.03.13
338 1. Setting the max_sectors_per_req based on max SGL supported by the
339 FW. Prior versions calculated this value from controller info
340 (max_sectors_1, max_sectors_2). For certain controllers/FW,
341 this was resulting in a value greater than max SGL supported
342 by the FW. Issue was first reported by users running LUKS+XFS
343 with megaraid_sas. Thanks to RB for providing the logs and
344 duplication steps that helped to get to the root cause of the
345 issue. 2. Increased MFI_POLL_TIMEOUT_SECS to 60 seconds from
346 10. FW may take a max of 60 seconds to respond to the INIT
349 1 Release Date : Fri. June. 15 16:30:43 PST 2007 -
350 (emaild-id:megaraidlinux@lsi.com)
354 2 Current Version : 00.00.03.13
355 3 Older Version : 00.00.03.12
357 1. Added the megasas_reset_timer routine to intercept cmd timeout and throttle io.
359 On Fri, 2007-03-16 at 16:44 -0600, James Bottomley wrote:
360 It looks like megaraid_sas at least needs this to throttle its commands
361 > as they begin to time out. The code keeps the existing transport
362 > template use of eh_timed_out (and allows the transport to override the
363 > host if they both have this callback).
367 1 Release Date : Sat May. 12 16:30:43 PST 2007 -
368 (emaild-id:megaraidlinux@lsi.com)
372 2 Current Version : 00.00.03.12
373 3 Older Version : 00.00.03.11
375 1. When MegaSAS driver receives reset call from OS, driver waits in reset
376 routine for max 3 minutes for all pending command completion. Now driver will
377 call completion routine every 5 seconds from the reset routine instead of
378 waiting for depending on cmd completion from isr path.
380 1 Release Date : Mon Apr. 30 10:25:52 PST 2007 -
381 (emaild-id:megaraidlinux@lsi.com)
385 2 Current Version : 00.00.03.11
386 3 Older Version : 00.00.03.09
388 1. Memory Manager for IOCTL removed for 2.6 kernels.
389 pci_alloc_consistent replaced by dma_alloc_coherent. With this
390 change there is no need of memory manager in the driver code
392 On Wed, 2007-02-07 at 13:30 -0800, Andrew Morton wrote:
393 > I suspect all this horror is due to stupidity in the DMA API.
395 > pci_alloc_consistent() just goes and assumes GFP_ATOMIC, whereas
396 > the caller (megasas_mgmt_fw_ioctl) would have been perfectly happy
399 > I bet this fixes it
401 It does, but the DMA API was expanded to cope with this exact case, so
402 use dma_alloc_coherent() directly in the megaraid code instead. The dev
403 is just &pci_dev->dev.
405 James <James.Bottomley@SteelEye.com>
407 3. SYNCHRONIZE_CACHE is not supported by FW and thus blocked by driver.
408 4. Hibernation support added
409 5. Performing diskdump while running IO in RHEL 4 was failing. Fixed.
411 1 Release Date : Fri Feb. 09 14:36:28 PST 2007 -
412 (emaild-id:megaraidlinux@lsi.com)
416 2 Current Version : 00.00.03.09
417 3 Older Version : 00.00.03.08
419 i. Under heavy IO mid-layer prints "DRIVER_TIMEOUT" errors
421 The driver now waits for 10 seconds to elapse instead of 5 (as in
422 previous release) to resume IO.
424 1 Release Date : Mon Feb. 05 11:35:24 PST 2007 -
425 (emaild-id:megaraidlinux@lsi.com)
428 2 Current Version : 00.00.03.08
429 3 Older Version : 00.00.03.07
431 i. Under heavy IO mid-layer prints "DRIVER_TIMEOUT" errors
433 Fix: The driver is now throttling IO.
434 Checks added in megasas_queue_command to know if FW is able to
435 process commands within timeout period. If number of retries
436 is 2 or greater,the driver stops sending cmd to FW temporarily. IO is
437 resumed if pending cmd count reduces to 16 or 5 seconds has elapsed
438 from the time cmds were last sent to FW.
440 ii. FW enables WCE bit in Mode Sense cmd for drives that are configured
441 as WriteBack. The OS may send "SYNCHRONIZE_CACHE" cmd when Logical
442 Disks are exposed with WCE=1. User is advised to enable Write Back
443 mode only when the controller has battery backup. At this time
444 Synhronize cache is not supported by the FW. Driver will short-cycle
445 the cmd and return success without sending down to FW.
447 1 Release Date : Sun Jan. 14 11:21:32 PDT 2007 -
448 Sumant Patro <Sumant.Patro@lsil.com>/Bo Yang
449 2 Current Version : 00.00.03.07
450 3 Older Version : 00.00.03.06
452 i. bios_param entry added in scsi_host_template that returns disk geometry
455 1 Release Date : Fri Oct 20 11:21:32 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>/Bo Yang
456 2 Current Version : 00.00.03.06
457 3 Older Version : 00.00.03.05
459 1. 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.
460 2. Added check in megasas_queue_command and dpc/isr routine to see if we have already declared adapter dead
461 (hw_crit_error=1). If hw_crit_error==1, now we donot accept any processing of pending cmds/accept any cmd from OS
463 1 Release Date : Mon Oct 02 11:21:32 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
464 2 Current Version : 00.00.03.05
465 3 Older Version : 00.00.03.04
467 i. PCI_DEVICE macro used
469 Convert the pci_device_id-table of the megaraid_sas-driver to the PCI_DEVICE-macro, to safe some lines.
471 - Henrik Kretzschmar <henne@nachtwindheim.de>
472 ii. All compiler warnings removed
473 iii. megasas_ctrl_info struct reverted to 3.02 release
474 iv. Default value of megasas_dbg_lvl set to 0
475 v. Removing in megasas_exit the sysfs entry created for megasas_dbg_lvl
476 vi. In megasas_teardown_frame_pool(), cmd->frame was passed instead of
477 cmd->sense to pci_pool_free. Fixed. Bug was pointed out by
480 1 Release Date : Wed Sep 13 14:22:51 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
481 2 Current Version : 00.00.03.04
482 3 Older Version : 00.00.03.03
484 i. Added Reboot notify
485 ii. Reduced by 1 max cmds sent to FW from Driver to make the reply_q_sz same
486 as Max Cmds FW can support
488 1 Release Date : Tue Aug 22 16:33:14 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
489 2 Current Version : 00.00.03.03
490 3 Older Version : 00.00.03.02
492 i. Send stop adapter to FW & Dump pending FW cmds before declaring adapter dead.
493 New varible added to set dbg level.
494 ii. Disable interrupt made as fn pointer as they are different for 1068 / 1078
495 iii. Frame count optimization. Main frame can contain 2 SGE for 64 bit SGLs and
497 iv. Tasklet added for cmd completion
498 v. 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.
499 vi. megasas_ctrl_prop structure updated (based on FW struct)
500 vii. Added print : FW now in Ready State during initialization
502 1 Release Date : Sun Aug 06 22:49:52 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
503 2 Current Version : 00.00.03.02
504 3 Older Version : 00.00.03.01
506 i. Added FW tranistion state for Hotplug scenario
508 1 Release Date : Sun May 14 22:49:52 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
509 2 Current Version : 00.00.03.01
510 3 Older Version : 00.00.02.04
512 i. Added support for ZCR controller.
514 New device id 0x413 added.
516 ii. Bug fix : Disable controller interrupt before firing INIT cmd to FW.
518 Interrupt is enabled after required initialization is over.
519 This is done to ensure that driver is ready to handle interrupts when
520 it is generated by the controller.
522 -Sumant Patro <Sumant.Patro@lsil.com>
524 1 Release Date : Wed Feb 03 14:31:44 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
525 2 Current Version : 00.00.02.04
526 3 Older Version : 00.00.02.04
528 i. Remove superflous instance_lock
530 gets rid of the otherwise superflous instance_lock and avoids an unsave
531 unsynchronized access in the error handler.
533 - Christoph Hellwig <hch@lst.de>
536 1 Release Date : Wed Feb 03 14:31:44 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
537 2 Current Version : 00.00.02.04
538 3 Older Version : 00.00.02.04
540 i. Support for 1078 type (ppc IOP) controller, device id : 0x60 added.
541 During initialization, depending on the device id, the template members
542 are initialized with function pointers specific to the ppc or
545 -Sumant Patro <Sumant.Patro@lsil.com>
547 1 Release Date : Fri Feb 03 14:16:25 PST 2006 - Sumant Patro
548 <Sumant.Patro@lsil.com>
549 2 Current Version : 00.00.02.04
550 3 Older Version : 00.00.02.02
551 i. Register 16 byte CDB capability with scsi midlayer
553 "This patch properly registers the 16 byte command length capability of the
554 megaraid_sas controlled hardware with the scsi midlayer. All megaraid_sas
555 hardware supports 16 byte CDB's."
557 -Joshua Giles <joshua_giles@dell.com>
559 1 Release Date : Mon Jan 23 14:09:01 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
560 2 Current Version : 00.00.02.02
561 3 Older Version : 00.00.02.01
563 i. New template defined to represent each family of controllers (identified by processor used).
564 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.
566 -Sumant Patro <Sumant.Patro@lsil.com>
568 1 Release Date : Mon Dec 19 14:36:26 PST 2005 - Sumant Patro <Sumant.Patro@lsil.com>
569 2 Current Version : 00.00.02.00-rc4
570 3 Older Version : 00.00.02.01
572 i. Code reorganized to remove code duplication in megasas_build_cmd.
574 "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"
576 - Christoph Hellwig <hch@lst.de>
578 ii. Defined MEGASAS_IOC_FIRMWARE32 for code paths that handles 32 bit applications in 64 bit systems.
580 "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"
582 - Christoph Hellwig <hch@lst.de>
projects / GitHub / LineageOS / android_kernel_samsung_universal7580.git / blob