[net-next-2.6.git] / Documentation / scsi / ChangeLog.megaraid_sas

1 Release Date    : Thur.  Oct 29, 2009 09:12:45 PST 2009 -
			(emaild-id:megaraidlinux@lsi.com)
			Bo Yang

2 Current Version : 00.00.04.17.1-rc1
3 Older Version   : 00.00.04.12

1.	Add the pad_0 in mfi frame structure to 0 to fix the
	context value larger than 32bit value issue.

2.	Add the logic drive list to the driver.  Driver will
	keep the logic drive list internal after driver load.

3.	driver fixed the device update issue after get the AEN
	PD delete/ADD, LD add/delete from FW.

1 Release Date    : Tues.  July 28, 2009 10:12:45 PST 2009 -
			(emaild-id:megaraidlinux@lsi.com)
			Bo Yang

2 Current Version : 00.00.04.12
3 Older Version   : 00.00.04.10

1.	Change the AEN sys PD update from scsi_scan to
	scsi_add_device and scsi_remove_device.
2.	Takeoff the debug print-out in aen_polling routine.

1 Release Date    : Thur.  July 02, 2009 10:12:45 PST 2009 -
			(emaild-id:megaraidlinux@lsi.com)
			Bo Yang

2 Current Version : 00.00.04.10
3 Older Version   : 00.00.04.08

1.	Add the 3 mins timeout during the controller initialize.
2.	Add the fix for 64bit sense date errors.

1 Release Date    : Tues. May 05, 2009 10:12:45 PST 2009 -
			(emaild-id:megaraidlinux@lsi.com)
			Bo Yang

2 Current Version : 00.00.04.08
3 Older Version   : 00.00.04.06

1.	Add the fix of pending in FW after deleted the logic drives.
2.	Add the fix of deallocating memory after get pdlist.

1 Release Date    : Tues. March 26, 2009 10:12:45 PST 2009 -
			(emaild-id:megaraidlinux@lsi.com)
			Bo Yang

2 Current Version : 00.00.04.06
3 Older Version   : 00.00.04.04

1.	Add the fix of the driver cmd empty fix of the driver cmd empty.
2.	Add the fix of the driver MSM AEN CMD cause the system slow.

1 Release Date    : Tues. March 03, 2009 10:12:45 PST 2009 -
			(emaild-id:megaraidlinux@lsi.com)
			Bo Yang

2 Current Version : 00.00.04.04
3 Older Version   : 00.00.04.01

1.	Add the Tape drive fix to the driver: If the command is for
	the tape device, set the pthru timeout to the os layer timeout value.

2.	Add Poll_wait mechanism to Gen-2 Linux driv.
		In the aen handler, driver needs to wakeup poll handler similar to
		the way it raises SIGIO.

3.	Add new controller new SAS2 support to the driver.

4.	Report the unconfigured PD (system PD) to OS.

5.	Add the IEEE SGL support to the driver

6.	Reasign the Application cmds to SAS2 controller

1 Release Date    : Thur.July. 24 11:41:51 PST 2008 -
                       (emaild-id:megaraidlinux@lsi.com)
                       Sumant Patro
                       Bo Yang

2 Current Version : 00.00.04.01
3 Older Version   : 00.00.03.22

1. Add the new controller (0078, 0079) support to the driver
       Those controllers are LSI's next generatation(gen2) SAS controllers.

1 Release Date    : Mon.June. 23 10:12:45 PST 2008 -
                       (emaild-id:megaraidlinux@lsi.com)
                       Sumant Patro
                       Bo Yang

2 Current Version : 00.00.03.22
3 Older Version   : 00.00.03.20

1. Add shutdown DCMD cmd to the shutdown routine to make FW shutdown proper.
2. Unexpected interrupt occurs in HWR Linux driver, add the dumy readl pci flush will fix this issue.

1 Release Date    : Mon. March 10 11:02:31 PDT 2008 -
			(emaild-id:megaraidlinux@lsi.com)
			Sumant Patro
			Bo Yang

2 Current Version : 00.00.03.20-RC1
3 Older Version   : 00.00.03.16

1. Rollback the sense info implementation
	Sense buffer ptr data type in the ioctl path is reverted back
	to u32 * as in previous versions of driver.

2. Fixed the driver frame count.
	When Driver sent wrong frame count to firmware.  As this
	particular command is sent to drive, FW is seeing continuous
	chip resets and so the command will timeout.

3. Add the new controller(1078DE) support to the driver
	and Increase the max_wait to 60 from 10 in the controller
	operational status.  With this max_wait increase, driver will
	make sure the FW will 	finish the pending cmd for KDUMP case.

1 Release Date    : Thur. Nov. 07 16:30:43 PST 2007 -
			(emaild-id:megaraidlinux@lsi.com)
			Sumant Patro
			Bo Yang

2 Current Version : 00.00.03.16
3 Older Version   : 00.00.03.15

1. Increased MFI_POLL_TIMEOUT_SECS to 60 seconds from 10. FW may take
	a max of 60 seconds to respond to the INIT cmd.

1 Release Date    : Fri. Sep. 07 16:30:43 PST 2007 -
			(emaild-id:megaraidlinux@lsi.com)
			Sumant Patro
			Bo Yang

2 Current Version : 00.00.03.15
3 Older Version   : 00.00.03.14

1. Added module parameter "poll_mode_io" to support for "polling"
	(reduced interrupt operation).  In this mode, IO completion
	interrupts are delayed. At the end of initiating IOs, the
	driver schedules for cmd completion if there are pending cmds
	to be completed.  A timer-based interrupt has also been added
	to prevent IO completion processing from being delayed
	indefinitely in the case that no new IOs are initiated.

1 Release Date    : Fri. Sep. 07 16:30:43 PST 2007 -
			(emaild-id:megaraidlinux@lsi.com)
			Sumant Patro
			Bo Yang

2 Current Version : 00.00.03.14
3 Older Version   : 00.00.03.13

1. Setting the max_sectors_per_req based on max SGL supported by the
	FW. Prior versions calculated this value from controller info
	(max_sectors_1, max_sectors_2). For certain controllers/FW,
	this was resulting in a value greater than max SGL supported
	by the FW. Issue was first reported by users running LUKS+XFS
	with megaraid_sas.  Thanks to RB for providing the logs and
	duplication steps that helped to get to the root cause of the
	issue.  2. Increased MFI_POLL_TIMEOUT_SECS to 60 seconds from
	10. FW may take a max of 60 seconds to respond to the INIT
	cmd.

1 Release Date    : Fri. June. 15 16:30:43 PST 2007 -
			(emaild-id:megaraidlinux@lsi.com)
			Sumant Patro
			Bo Yang

2 Current Version : 00.00.03.13
3 Older Version   : 00.00.03.12

1. Added the megasas_reset_timer routine to intercept cmd timeout and throttle io.

On Fri, 2007-03-16 at 16:44 -0600, James Bottomley wrote:
It looks like megaraid_sas at least needs this to throttle its commands
> as they begin to time out.  The code keeps the existing transport
> template use of eh_timed_out (and allows the transport to override the
> host if they both have this callback).
>
> James

1 Release Date    : Sat May. 12 16:30:43 PST 2007 -
			(emaild-id:megaraidlinux@lsi.com)
			Sumant Patro
			Bo Yang

2 Current Version : 00.00.03.12
3 Older Version   : 00.00.03.11

1.  When MegaSAS driver receives reset call from OS, driver waits in reset
routine for max 3 minutes for all pending command completion. Now driver will
call completion routine every 5 seconds from the reset routine instead of
waiting for depending on cmd completion from isr path.

1 Release Date    : Mon Apr. 30 10:25:52 PST 2007 -
			(emaild-id:megaraidlinux@lsi.com)
			Sumant Patro
			Bo Yang

2 Current Version : 00.00.03.11
3 Older Version   : 00.00.03.09

	1. Memory Manager for IOCTL removed for 2.6 kernels.
	   pci_alloc_consistent replaced by dma_alloc_coherent. With this
	   change there is no need of memory manager in the driver code

	On Wed, 2007-02-07 at 13:30 -0800, Andrew Morton wrote:
	> I suspect all this horror is due to stupidity in the DMA API.
	>
	> pci_alloc_consistent() just goes and assumes GFP_ATOMIC, whereas
	> the caller (megasas_mgmt_fw_ioctl) would have been perfectly happy
	> to use GFP_KERNEL.
	>
	> I bet this fixes it

	It does, but the DMA API was expanded to cope with this exact case, so
	use dma_alloc_coherent() directly in the megaraid code instead.  The dev
	is just &pci_dev->dev.

	James <James.Bottomley@SteelEye.com>

	3. SYNCHRONIZE_CACHE is not supported by FW and thus blocked by driver.
	4. Hibernation support added
	5. Performing diskdump while running IO in RHEL 4 was failing. Fixed.

1 Release Date    : Fri Feb. 09 14:36:28 PST 2007 -
			(emaild-id:megaraidlinux@lsi.com)
			Sumant Patro
			Bo Yang

2 Current Version : 00.00.03.09
3 Older Version   : 00.00.03.08

i.	Under heavy IO mid-layer prints "DRIVER_TIMEOUT" errors

	The driver now waits for 10 seconds to elapse instead of 5 (as in
	previous release) to resume IO.

1 Release Date    : Mon Feb. 05 11:35:24 PST 2007 -
			(emaild-id:megaraidlinux@lsi.com)
			Sumant Patro
			Bo Yang
2 Current Version : 00.00.03.08
3 Older Version   : 00.00.03.07

i.	Under heavy IO mid-layer prints "DRIVER_TIMEOUT" errors

	Fix:	The driver is now throttling IO.
	Checks added in megasas_queue_command to know if FW is able to
	process commands within timeout period. If number of retries
	is 2 or greater,the driver stops sending cmd to FW temporarily. IO is
	resumed if pending cmd count reduces to 16 or 5 seconds has elapsed
	from the time cmds were last sent to FW.

ii.	FW enables WCE bit in Mode Sense cmd for drives that are configured
	as WriteBack. The OS may send "SYNCHRONIZE_CACHE" cmd when Logical
	Disks are exposed with WCE=1. User is advised to enable Write Back
	mode only when the controller has battery backup. At this time
	Synhronize cache is not supported by the FW. Driver will short-cycle
	the cmd and return success without sending down to FW.

1 Release Date    : Sun Jan. 14 11:21:32 PDT 2007 -
		 Sumant Patro <Sumant.Patro@lsil.com>/Bo Yang
2 Current Version : 00.00.03.07
3 Older Version   : 00.00.03.06

i.	bios_param entry added in scsi_host_template that returns disk geometry
	information.

1 Release Date    : Fri Oct 20 11:21:32 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>/Bo Yang
2 Current Version : 00.00.03.06
3 Older Version   : 00.00.03.05

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.
2. Added check in megasas_queue_command and dpc/isr routine to see if we have already declared adapter dead
   (hw_crit_error=1). If hw_crit_error==1, now we donot accept any processing of pending cmds/accept any cmd from OS

1 Release Date    : Mon Oct 02 11:21:32 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
2 Current Version : 00.00.03.05
3 Older Version   : 00.00.03.04

i.	PCI_DEVICE macro used

	Convert the pci_device_id-table of the megaraid_sas-driver to the PCI_DEVICE-macro, to safe some lines.

		- Henrik Kretzschmar <henne@nachtwindheim.de>
ii.	All compiler warnings removed
iii.	megasas_ctrl_info struct reverted to 3.02 release
iv.	Default value of megasas_dbg_lvl set to 0
v.	Removing in megasas_exit the sysfs entry created for megasas_dbg_lvl
vi.	In megasas_teardown_frame_pool(), cmd->frame was passed instead of
	cmd->sense to pci_pool_free. Fixed. Bug was pointed out by
	Eric Sesterhenn

1 Release Date    : Wed Sep 13 14:22:51 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
2 Current Version : 00.00.03.04
3 Older Version   : 00.00.03.03

i.	Added Reboot notify
ii.	Reduced by 1 max cmds sent to FW from Driver to make the reply_q_sz same
	as Max Cmds FW can support

1 Release Date    : Tue Aug 22 16:33:14 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
2 Current Version : 00.00.03.03
3 Older Version   : 00.00.03.02

i.	Send stop adapter to FW & Dump pending FW cmds before declaring adapter dead.
	New varible added to set dbg level.
ii.	Disable interrupt made as fn pointer as they are different for 1068 / 1078
iii.	Frame count optimization. Main frame can contain 2 SGE for 64 bit SGLs and
	3 SGE for 32 bit SGL
iv.	Tasklet added for cmd completion
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.
vi.	megasas_ctrl_prop structure updated (based on FW struct)
vii.	Added print : FW now in Ready State during initialization

1 Release Date    : Sun Aug 06 22:49:52 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
2 Current Version : 00.00.03.02
3 Older Version   : 00.00.03.01

i.	Added FW tranistion state for Hotplug scenario

1 Release Date    : Sun May 14 22:49:52 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
2 Current Version : 00.00.03.01
3 Older Version   : 00.00.02.04

i.	Added support for ZCR controller.

		New device id 0x413 added.

ii.	Bug fix : Disable controller interrupt before firing INIT cmd to FW.

		Interrupt is enabled after required initialization is over.
		This is done to ensure that driver is ready to handle interrupts when
		it is generated by the controller.

		-Sumant Patro <Sumant.Patro@lsil.com>

1 Release Date    : Wed Feb 03 14:31:44 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
2 Current Version : 00.00.02.04
3 Older Version   : 00.00.02.04 

i.	Remove superflous instance_lock

	gets rid of the otherwise superflous instance_lock and avoids an unsave 
	unsynchronized access in the error handler.

		- Christoph Hellwig <hch@lst.de>


1 Release Date    : Wed Feb 03 14:31:44 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
2 Current Version : 00.00.02.04
3 Older Version   : 00.00.02.04 

i.	Support for 1078 type (ppc IOP) controller, device id : 0x60 added.
	During initialization, depending on the device id, the template members 
	are initialized with function pointers specific to the ppc or 
	xscale controllers.  

		-Sumant Patro <Sumant.Patro@lsil.com>
		
1 Release Date    : Fri Feb 03 14:16:25 PST 2006 - Sumant Patro 
							<Sumant.Patro@lsil.com>
2 Current Version : 00.00.02.04
3 Older Version   : 00.00.02.02 
i.	Register 16 byte CDB capability with scsi midlayer 

	"Ths patch properly registers the 16 byte command length capability of the 
	megaraid_sas controlled hardware with the scsi midlayer. All megaraid_sas 
	hardware supports 16 byte CDB's."

		-Joshua Giles <joshua_giles@dell.com> 

1 Release Date    : Mon Jan 23 14:09:01 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
2 Current Version : 00.00.02.02
3 Older Version   : 00.00.02.01 

i.	New template defined to represent each family of controllers (identified by processor used). 
	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.

		-Sumant Patro <Sumant.Patro@lsil.com>

1 Release Date    : Mon Dec 19 14:36:26 PST 2005 - Sumant Patro <Sumant.Patro@lsil.com>
2 Current Version : 00.00.02.00-rc4 
3 Older Version   : 00.00.02.01 

i.	Code reorganized to remove code duplication in megasas_build_cmd. 

	"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"

		- Christoph Hellwig <hch@lst.de>

ii.	Defined MEGASAS_IOC_FIRMWARE32 for code paths that handles 32 bit applications in 64 bit systems.

	"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"

		- Christoph Hellwig <hch@lst.de>
Commit	Line	Data
63bad45d YB	1	1 Release Date : Thur. Oct 29, 2009 09:12:45 PST 2009 -
	2	(emaild-id:megaraidlinux@lsi.com)
	3	Bo Yang
	4
	5	2 Current Version : 00.00.04.17.1-rc1
	6	3 Older Version : 00.00.04.12
	7
	8	1. Add the pad_0 in mfi frame structure to 0 to fix the
	9	context value larger than 32bit value issue.
	10
	11	2. Add the logic drive list to the driver. Driver will
	12	keep the logic drive list internal after driver load.
	13
	14	3. driver fixed the device update issue after get the AEN
	15	PD delete/ADD, LD add/delete from FW.
	16
a0b77368 YB	17	1 Release Date : Tues. July 28, 2009 10:12:45 PST 2009 -
	18	(emaild-id:megaraidlinux@lsi.com)
	19	Bo Yang
	20
	21	2 Current Version : 00.00.04.12
	22	3 Older Version : 00.00.04.10
	23
	24	1. Change the AEN sys PD update from scsi_scan to
	25	scsi_add_device and scsi_remove_device.
	26	2. Takeoff the debug print-out in aen_polling routine.
	27
	28	1 Release Date : Thur. July 02, 2009 10:12:45 PST 2009 -
	29	(emaild-id:megaraidlinux@lsi.com)
	30	Bo Yang
	31
	32	2 Current Version : 00.00.04.10
	33	3 Older Version : 00.00.04.08
	34
	35	1. Add the 3 mins timeout during the controller initialize.
	36	2. Add the fix for 64bit sense date errors.
	37
	38	1 Release Date : Tues. May 05, 2009 10:12:45 PST 2009 -
	39	(emaild-id:megaraidlinux@lsi.com)
	40	Bo Yang
	41
	42	2 Current Version : 00.00.04.08
	43	3 Older Version : 00.00.04.06
	44
	45	1. Add the fix of pending in FW after deleted the logic drives.
	46	2. Add the fix of deallocating memory after get pdlist.
	47
	48	1 Release Date : Tues. March 26, 2009 10:12:45 PST 2009 -
	49	(emaild-id:megaraidlinux@lsi.com)
	50	Bo Yang
	51
	52	2 Current Version : 00.00.04.06
	53	3 Older Version : 00.00.04.04
	54
	55	1. Add the fix of the driver cmd empty fix of the driver cmd empty.
	56	2. Add the fix of the driver MSM AEN CMD cause the system slow.
	57
	58	1 Release Date : Tues. March 03, 2009 10:12:45 PST 2009 -
	59	(emaild-id:megaraidlinux@lsi.com)
	60	Bo Yang
	61
	62	2 Current Version : 00.00.04.04
	63	3 Older Version : 00.00.04.01
	64
	65	1. Add the Tape drive fix to the driver: If the command is for
	66	the tape device, set the pthru timeout to the os layer timeout value.
	67
	68	2. Add Poll_wait mechanism to Gen-2 Linux driv.
	69	In the aen handler, driver needs to wakeup poll handler similar to
	70	the way it raises SIGIO.
	71
	72	3. Add new controller new SAS2 support to the driver.
	73
	74	4. Report the unconfigured PD (system PD) to OS.
	75
	76	5. Add the IEEE SGL support to the driver
	77
	78	6. Reasign the Application cmds to SAS2 controller
24541f99 YB	79
	80	1 Release Date : Thur.July. 24 11:41:51 PST 2008 -
	81	(emaild-id:megaraidlinux@lsi.com)
	82	Sumant Patro
	83	Bo Yang
	84
	85	2 Current Version : 00.00.04.01
	86	3 Older Version : 00.00.03.22
	87
	88	1. Add the new controller (0078, 0079) support to the driver
	89	Those controllers are LSI's next generatation(gen2) SAS controllers.
	90
	91	1 Release Date : Mon.June. 23 10:12:45 PST 2008 -
	92	(emaild-id:megaraidlinux@lsi.com)
	93	Sumant Patro
	94	Bo Yang
	95
	96	2 Current Version : 00.00.03.22
	97	3 Older Version : 00.00.03.20
	98
	99	1. Add shutdown DCMD cmd to the shutdown routine to make FW shutdown proper.
	100	2. Unexpected interrupt occurs in HWR Linux driver, add the dumy readl pci flush will fix this issue.
	101
127ce971	102	1 Release Date : Mon. March 10 11:02:31 PDT 2008 -
	103	(emaild-id:megaraidlinux@lsi.com)
	104	Sumant Patro
	105	Bo Yang
	106
	107	2 Current Version : 00.00.03.20-RC1
	108	3 Older Version : 00.00.03.16
	109
	110	1. Rollback the sense info implementation
	111	Sense buffer ptr data type in the ioctl path is reverted back
	112	to u32 * as in previous versions of driver.
	113
	114	2. Fixed the driver frame count.
	115	When Driver sent wrong frame count to firmware. As this
	116	particular command is sent to drive, FW is seeing continuous
	117	chip resets and so the command will timeout.
	118
	119	3. Add the new controller(1078DE) support to the driver
	120	and Increase the max_wait to 60 from 10 in the controller
	121	operational status. With this max_wait increase, driver will
	122	make sure the FW will finish the pending cmd for KDUMP case.
	123
f28cd7cf	124	1 Release Date : Thur. Nov. 07 16:30:43 PST 2007 -
	125	(emaild-id:megaraidlinux@lsi.com)
	126	Sumant Patro
	127	Bo Yang
	128
	129	2 Current Version : 00.00.03.16
	130	3 Older Version : 00.00.03.15
	131
	132	1. Increased MFI_POLL_TIMEOUT_SECS to 60 seconds from 10. FW may take
	133	a max of 60 seconds to respond to the INIT cmd.
	134
	135	1 Release Date : Fri. Sep. 07 16:30:43 PST 2007 -
	136	(emaild-id:megaraidlinux@lsi.com)
	137	Sumant Patro
	138	Bo Yang
	139
	140	2 Current Version : 00.00.03.15
	141	3 Older Version : 00.00.03.14
	142
	143	1. Added module parameter "poll_mode_io" to support for "polling"
	144	(reduced interrupt operation). In this mode, IO completion
	145	interrupts are delayed. At the end of initiating IOs, the
	146	driver schedules for cmd completion if there are pending cmds
	147	to be completed. A timer-based interrupt has also been added
	148	to prevent IO completion processing from being delayed
	149	indefinitely in the case that no new IOs are initiated.
	150
	151	1 Release Date : Fri. Sep. 07 16:30:43 PST 2007 -
	152	(emaild-id:megaraidlinux@lsi.com)
	153	Sumant Patro
	154	Bo Yang
	155
	156	2 Current Version : 00.00.03.14
	157	3 Older Version : 00.00.03.13
	158
	159	1. Setting the max_sectors_per_req based on max SGL supported by the
	160	FW. Prior versions calculated this value from controller info
	161	(max_sectors_1, max_sectors_2). For certain controllers/FW,
	162	this was resulting in a value greater than max SGL supported
	163	by the FW. Issue was first reported by users running LUKS+XFS
	164	with megaraid_sas. Thanks to RB for providing the logs and
	165	duplication steps that helped to get to the root cause of the
	166	issue. 2. Increased MFI_POLL_TIMEOUT_SECS to 60 seconds from
	167	10. FW may take a max of 60 seconds to respond to the INIT
	168	cmd.
	169
	170	1 Release Date : Fri. June. 15 16:30:43 PST 2007 -
	171	(emaild-id:megaraidlinux@lsi.com)
	172	Sumant Patro
	173	Bo Yang
	174
	175	2 Current Version : 00.00.03.13
	176	3 Older Version : 00.00.03.12
	177
	178	1. Added the megasas_reset_timer routine to intercept cmd timeout and throttle io.
	179
	180	On Fri, 2007-03-16 at 16:44 -0600, James Bottomley wrote:
	181	It looks like megaraid_sas at least needs this to throttle its commands
	182	> as they begin to time out. The code keeps the existing transport
	183	> template use of eh_timed_out (and allows the transport to override the
	184	> host if they both have this callback).
	185	>
	186	> James
	187
188	1 Release Date : Sat May. 12 16:30:43 PST 2007 -
189	(emaild-id:megaraidlinux@lsi.com)
190	Sumant Patro
191	Bo Yang
192
193	2 Current Version : 00.00.03.12
194	3 Older Version : 00.00.03.11
195
196	1. When MegaSAS driver receives reset call from OS, driver waits in reset
197	routine for max 3 minutes for all pending command completion. Now driver will
198	call completion routine every 5 seconds from the reset routine instead of
199	waiting for depending on cmd completion from isr path.
200
201	1 Release Date : Mon Apr. 30 10:25:52 PST 2007 -
202	(emaild-id:megaraidlinux@lsi.com)
203	Sumant Patro
204	Bo Yang
205
206	2 Current Version : 00.00.03.11
207	3 Older Version : 00.00.03.09
208
209	1. Memory Manager for IOCTL removed for 2.6 kernels.
210	pci_alloc_consistent replaced by dma_alloc_coherent. With this
211	change there is no need of memory manager in the driver code
212
213	On Wed, 2007-02-07 at 13:30 -0800, Andrew Morton wrote:
214	> I suspect all this horror is due to stupidity in the DMA API.
215	>
216	> pci_alloc_consistent() just goes and assumes GFP_ATOMIC, whereas
217	> the caller (megasas_mgmt_fw_ioctl) would have been perfectly happy
218	> to use GFP_KERNEL.
219	>
220	> I bet this fixes it
221
222	It does, but the DMA API was expanded to cope with this exact case, so
223	use dma_alloc_coherent() directly in the megaraid code instead. The dev
224	is just &pci_dev->dev.
225
226	James <James.Bottomley@SteelEye.com>
227
228	3. SYNCHRONIZE_CACHE is not supported by FW and thus blocked by driver.
229	4. Hibernation support added
230	5. Performing diskdump while running IO in RHEL 4 was failing. Fixed.
231
232	1 Release Date : Fri Feb. 09 14:36:28 PST 2007 -
233	(emaild-id:megaraidlinux@lsi.com)
234	Sumant Patro
235	Bo Yang
236
237	2 Current Version : 00.00.03.09
238	3 Older Version : 00.00.03.08
239
240	i. Under heavy IO mid-layer prints "DRIVER_TIMEOUT" errors
241
242	The driver now waits for 10 seconds to elapse instead of 5 (as in
243	previous release) to resume IO.
244
245	1 Release Date : Mon Feb. 05 11:35:24 PST 2007 -
246	(emaild-id:megaraidlinux@lsi.com)
247	Sumant Patro
248	Bo Yang
249	2 Current Version : 00.00.03.08
250	3 Older Version : 00.00.03.07
251
252	i. Under heavy IO mid-layer prints "DRIVER_TIMEOUT" errors
253
254	Fix: The driver is now throttling IO.
255	Checks added in megasas_queue_command to know if FW is able to
256	process commands within timeout period. If number of retries
257	is 2 or greater,the driver stops sending cmd to FW temporarily. IO is
258	resumed if pending cmd count reduces to 16 or 5 seconds has elapsed
259	from the time cmds were last sent to FW.
260
261	ii. FW enables WCE bit in Mode Sense cmd for drives that are configured
262	as WriteBack. The OS may send "SYNCHRONIZE_CACHE" cmd when Logical
263	Disks are exposed with WCE=1. User is advised to enable Write Back
264	mode only when the controller has battery backup. At this time
265	Synhronize cache is not supported by the FW. Driver will short-cycle
af901ca1	266	the cmd and return success without sending down to FW.
f28cd7cf	267
	268	1 Release Date : Sun Jan. 14 11:21:32 PDT 2007 -
	269	Sumant Patro <Sumant.Patro@lsil.com>/Bo Yang
	270	2 Current Version : 00.00.03.07
	271	3 Older Version : 00.00.03.06
	272
	273	i. bios_param entry added in scsi_host_template that returns disk geometry
	274	information.
	275
	276	1 Release Date : Fri Oct 20 11:21:32 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>/Bo Yang
	277	2 Current Version : 00.00.03.06
	278	3 Older Version : 00.00.03.05
	279
	280	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.
	281	2. Added check in megasas_queue_command and dpc/isr routine to see if we have already declared adapter dead
	282	(hw_crit_error=1). If hw_crit_error==1, now we donot accept any processing of pending cmds/accept any cmd from OS
e4a082c7	283
2a3681e5 SP	284	1 Release Date : Mon Oct 02 11:21:32 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
	285	2 Current Version : 00.00.03.05
	286	3 Older Version : 00.00.03.04
	287
	288	i. PCI_DEVICE macro used
	289
	290	Convert the pci_device_id-table of the megaraid_sas-driver to the PCI_DEVICE-macro, to safe some lines.
	291
	292	- Henrik Kretzschmar <henne@nachtwindheim.de>
	293	ii. All compiler warnings removed
	294	iii. megasas_ctrl_info struct reverted to 3.02 release
	295	iv. Default value of megasas_dbg_lvl set to 0
	296	v. Removing in megasas_exit the sysfs entry created for megasas_dbg_lvl
	297	vi. In megasas_teardown_frame_pool(), cmd->frame was passed instead of
	298	cmd->sense to pci_pool_free. Fixed. Bug was pointed out by
	299	Eric Sesterhenn
	300
	301	1 Release Date : Wed Sep 13 14:22:51 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
	302	2 Current Version : 00.00.03.04
	303	3 Older Version : 00.00.03.03
	304
	305	i. Added Reboot notify
	306	ii. Reduced by 1 max cmds sent to FW from Driver to make the reply_q_sz same
	307	as Max Cmds FW can support
	308
	309	1 Release Date : Tue Aug 22 16:33:14 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
	310	2 Current Version : 00.00.03.03
	311	3 Older Version : 00.00.03.02
	312
	313	i. Send stop adapter to FW & Dump pending FW cmds before declaring adapter dead.
	314	New varible added to set dbg level.
	315	ii. Disable interrupt made as fn pointer as they are different for 1068 / 1078
	316	iii. Frame count optimization. Main frame can contain 2 SGE for 64 bit SGLs and
	317	3 SGE for 32 bit SGL
	318	iv. Tasklet added for cmd completion
	319	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.
	320	vi. megasas_ctrl_prop structure updated (based on FW struct)
	321	vii. Added print : FW now in Ready State during initialization
	322
	323	1 Release Date : Sun Aug 06 22:49:52 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
	324	2 Current Version : 00.00.03.02
	325	3 Older Version : 00.00.03.01
	326
	327	i. Added FW tranistion state for Hotplug scenario
	328
0e98936c SP	329	1 Release Date : Sun May 14 22:49:52 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
	330	2 Current Version : 00.00.03.01
	331	3 Older Version : 00.00.02.04
	332
	333	i. Added support for ZCR controller.
	334
	335	New device id 0x413 added.
	336
	337	ii. Bug fix : Disable controller interrupt before firing INIT cmd to FW.
	338
	339	Interrupt is enabled after required initialization is over.
	340	This is done to ensure that driver is ready to handle interrupts when
	341	it is generated by the controller.
	342
	343	-Sumant Patro <Sumant.Patro@lsil.com>
	344
e4a082c7 SP	345	1 Release Date : Wed Feb 03 14:31:44 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
	346	2 Current Version : 00.00.02.04
	347	3 Older Version : 00.00.02.04
	348
	349	i. Remove superflous instance_lock
	350
	351	gets rid of the otherwise superflous instance_lock and avoids an unsave
	352	unsynchronized access in the error handler.
	353
	354	- Christoph Hellwig <hch@lst.de>
	355
	356
f9876f0b SP	357	1 Release Date : Wed Feb 03 14:31:44 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
	358	2 Current Version : 00.00.02.04
	359	3 Older Version : 00.00.02.04
	360
	361	i. Support for 1078 type (ppc IOP) controller, device id : 0x60 added.
	362	During initialization, depending on the device id, the template members
	363	are initialized with function pointers specific to the ppc or
	364	xscale controllers.
	365
	366	-Sumant Patro <Sumant.Patro@lsil.com>
	367
122da302 JG	368	1 Release Date : Fri Feb 03 14:16:25 PST 2006 - Sumant Patro
	369	<Sumant.Patro@lsil.com>
	370	2 Current Version : 00.00.02.04
	371	3 Older Version : 00.00.02.02
	372	i. Register 16 byte CDB capability with scsi midlayer
	373
	374	"Ths patch properly registers the 16 byte command length capability of the
	375	megaraid_sas controlled hardware with the scsi midlayer. All megaraid_sas
	376	hardware supports 16 byte CDB's."
	377
	378	-Joshua Giles <joshua_giles@dell.com>
	379
1341c939 SP	380	1 Release Date : Mon Jan 23 14:09:01 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
	381	2 Current Version : 00.00.02.02
	382	3 Older Version : 00.00.02.01
	383
	384	i. New template defined to represent each family of controllers (identified by processor used).
	385	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.
	386
	387	-Sumant Patro <Sumant.Patro@lsil.com>
	388
cb59aa6a SP	389	1 Release Date : Mon Dec 19 14:36:26 PST 2005 - Sumant Patro <Sumant.Patro@lsil.com>
	390	2 Current Version : 00.00.02.00-rc4
	391	3 Older Version : 00.00.02.01
	392
	393	i. Code reorganized to remove code duplication in megasas_build_cmd.
	394
	395	"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"
	396
	397	- Christoph Hellwig <hch@lst.de>
	398
	399	ii. Defined MEGASAS_IOC_FIRMWARE32 for code paths that handles 32 bit applications in 64 bit systems.
	400
	401	"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"
	402
	403	- Christoph Hellwig <hch@lst.de>