Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

2 files changed, 1255 insertions, 0 deletions

diff --git a/Documentation/scsi/ChangeLog.megaraid b/Documentation/scsi/ChangeLog.megaraid
new file mode 100644
index 000000000..d2052fdbe
--- /dev/null
+++ b/Documentation/scsi/ChangeLog.megaraid
@@ -0,0 +1,614 @@
+Release Date	: Thu Nov 16 15:32:35 EST 2006 -
+				Sumant Patro <sumant.patro@lsi.com>
+Current Version : 2.20.5.1 (scsi module), 2.20.2.6 (cmm module)
+Older Version	: 2.20.4.9 (scsi module), 2.20.2.6 (cmm module)
+
+1.	Changes in Initialization to fix kdump failure.
+	Send SYNC command on loading.
+	This command clears the pending commands in the adapter
+	and re-initialize its internal RAID structure.
+	Without this change, megaraid driver either panics or fails to
+	initialize the adapter during kdump's second kernel boot
+	if there are pending commands or interrupts from other devices
+	sharing the same IRQ.
+2. 	Authors email-id domain name changed from lsil.com to lsi.com.
+	Also modified the MODULE_AUTHOR to megaraidlinux@lsi.com
+
+Release Date	: Fri May 19 09:31:45 EST 2006 - Seokmann Ju <sju@lsil.com>
+Current Version : 2.20.4.9 (scsi module), 2.20.2.6 (cmm module)
+Older Version	: 2.20.4.8 (scsi module), 2.20.2.6 (cmm module)
+
+1.	Fixed a bug in megaraid_init_mbox().
+	Customer reported "garbage in file on x86_64 platform".
+	Root Cause: the driver registered controllers as 64-bit DMA capable
+	for those which are not support it.
+	Fix: Made change in the function inserting identification machanism
+	identifying 64-bit DMA capable controllers.
+
+	> -----Original Message-----
+	> From: Vasily Averin [mailto:vvs@sw.ru]
+	> Sent: Thursday, May 04, 2006 2:49 PM
+	> To: linux-scsi@vger.kernel.org; Kolli, Neela; Mukker, Atul;
+	> Ju, Seokmann; Bagalkote, Sreenivas;
+	> James.Bottomley@SteelEye.com; devel@openvz.org
+	> Subject: megaraid_mbox: garbage in file
+	>
+	> Hello all,
+	>
+	> I've investigated customers claim on the unstable work of
+	> their node and found a
+	> strange effect: reading from some files leads to the
+	>  "attempt to access beyond end of device" messages.
+	>
+	> I've checked filesystem, memory on the node, motherboard BIOS
+	> version, but it
+	> does not help and issue still has been reproduced by simple
+	> file reading.
+	>
+	> Reproducer is simple:
+	>
+	> echo 0xffffffff >/proc/sys/dev/scsi/logging_level ;
+	> cat /vz/private/101/root/etc/ld.so.cache >/tmp/ttt  ;
+	> echo 0 >/proc/sys/dev/scsi/logging
+	>
+	> It leads to the following messages in dmesg
+	>
+	> sd_init_command: disk=sda, block=871769260, count=26
+	> sda : block=871769260
+	> sda : reading 26/26 512 byte blocks.
+	> scsi_add_timer: scmd: f79ed980, time: 7500, (c02b1420)
+	> sd 0:1:0:0: send 0xf79ed980                  sd 0:1:0:0:
+	>         command: Read (10): 28 00 33 f6 24 ac 00 00 1a 00
+	> buffer = 0xf7cfb540, bufflen = 13312, done = 0xc0366b40,
+	> queuecommand 0xc0344010
+	> leaving scsi_dispatch_cmnd()
+	> scsi_delete_timer: scmd: f79ed980, rtn: 1
+	> sd 0:1:0:0: done 0xf79ed980 SUCCESS        0 sd 0:1:0:0:
+	>         command: Read (10): 28 00 33 f6 24 ac 00 00 1a 00
+	> scsi host busy 1 failed 0
+	> sd 0:1:0:0: Notifying upper driver of completion (result 0)
+	> sd_rw_intr: sda: res=0x0
+	> 26 sectors total, 13312 bytes done.
+	> use_sg is 4
+	> attempt to access beyond end of device
+	> sda6: rw=0, want=1044134458, limit=951401367
+	> Buffer I/O error on device sda6, logical block 522067228
+	> attempt to access beyond end of device
+
+2.	When INQUIRY with EVPD bit set issued to the MegaRAID controller,
+	system memory gets corrupted.
+	Root Cause: MegaRAID F/W handle the INQUIRY with EVPD bit set
+	incorrectly.
+	Fix: MegaRAID F/W has fixed the problem and being process of release,
+	soon. Meanwhile, driver will filter out the request.
+
+3.	One of member in the data structure of the driver leads unaligne
+	issue on 64-bit platform.
+	Customer reporeted "kernel unaligned access addrss" issue when
+	application communicates with MegaRAID HBA driver.
+	Root Cause: in uioc_t structure, one of member had misaligned and it
+	led system to display the error message.
+	Fix: A patch submitted to community from following folk.
+
+	> -----Original Message-----
+	> From: linux-scsi-owner@vger.kernel.org
+	> [mailto:linux-scsi-owner@vger.kernel.org] On Behalf Of Sakurai Hiroomi
+	> Sent: Wednesday, July 12, 2006 4:20 AM
+	> To: linux-scsi@vger.kernel.org; linux-kernel@vger.kernel.org
+	> Subject: Re: Help: strange messages from kernel on IA64 platform
+	>
+	> Hi,
+	>
+	> I saw same message.
+	>
+	> When GAM(Global Array Manager) is started, The following
+	> message output.
+	> kernel: kernel unaligned access to 0xe0000001fe1080d4,
+	> ip=0xa000000200053371
+	>
+	> The uioc structure used by ioctl is defined by packed,
+	> the allignment of each member are disturbed.
+	> In a 64 bit structure, the allignment of member doesn't fit 64 bit
+	> boundary. this causes this messages.
+	> In a 32 bit structure, we don't see the message because the allinment
+	> of member fit 32 bit boundary even if packed is specified.
+	>
+	> patch
+	> I Add 32 bit dummy member to fit 64 bit boundary. I tested.
+	> We confirmed this patch fix the problem by IA64 server.
+	>
+	> **************************************************************
+	> ****************
+	> --- linux-2.6.9/drivers/scsi/megaraid/megaraid_ioctl.h.orig
+	> 2006-04-03 17:13:03.000000000 +0900
+	> +++ linux-2.6.9/drivers/scsi/megaraid/megaraid_ioctl.h
+	> 2006-04-03 17:14:09.000000000 +0900
+	> @@ -132,6 +132,10 @@
+	>  /* Driver Data: */
+	>          void __user *           user_data;
+	>          uint32_t                user_data_len;
+	> +
+	> +        /* 64bit alignment */
+	> +        uint32_t                pad_0xBC;
+	> +
+	>          mraid_passthru_t        __user *user_pthru;
+	>
+	>          mraid_passthru_t        *pthru32;
+	> **************************************************************
+	> ****************
+
+Release Date	: Mon Apr 11 12:27:22 EST 2006 - Seokmann Ju <sju@lsil.com>
+Current Version : 2.20.4.8 (scsi module), 2.20.2.6 (cmm module)
+Older Version	: 2.20.4.7 (scsi module), 2.20.2.6 (cmm module)
+
+1.	Fixed a bug in megaraid_reset_handler().
+	Customer reported "Unable to handle kernel NULL pointer dereference
+	at virtual address 00000000" when system goes to reset condition
+	for some reason. It happened randomly.
+	Root Cause: in the megaraid_reset_handler(), there is possibility not
+	returning pending packets in the pend_list if there are multiple
+	pending packets.
+	Fix: Made the change in the driver so that it will return all packets
+	in the pend_list.
+
+2.	Added change request.
+	As found in the following URL, rmb() only didn't help the
+	problem. I had to increase the loop counter to 0xFFFFFF. (6 F's)
+	http://marc.theaimsgroup.com/?l=linux-scsi&m=110971060502497&w=2
+
+	I attached a patch for your reference, too.
+	Could you check and get this fix in your driver?
+
+	Best Regards,
+	Jun'ichi Nomura
+
+Release Date	: Fri Nov 11 12:27:22 EST 2005 - Seokmann Ju <sju@lsil.com>
+Current Version : 2.20.4.7 (scsi module), 2.20.2.6 (cmm module)
+Older Version	: 2.20.4.6 (scsi module), 2.20.2.6 (cmm module)
+
+1.	Sorted out PCI IDs to remove megaraid support overlaps.
+	Based on the patch from Daniel, sorted out PCI IDs along with
+	character node name change from 'megadev' to 'megadev_legacy' to avoid
+	conflict.
+	---
+	Hopefully we'll be getting the build restriction zapped much sooner, 
+	but we should also be thinking about totally removing the hardware 
+	support overlap in the megaraid drivers.
+
+	This patch pencils in a date of Feb 06 for this, and performs some 
+	printk abuse in hope that existing legacy users might pick up on what's
+	going on.
+
+	Signed-off-by: Daniel Drake <dsd@gentoo.org>
+	---
+
+2.	Fixed a issue: megaraid always fails to reset handler.
+	---
+	I found that the megaraid driver always fails to reset the
+	adapter with the following message:
+		megaraid: resetting the host...
+		megaraid mbox: reset sequence completed successfully
+		megaraid: fast sync command timed out
+		megaraid: reservation reset failed
+	when the "Cluster mode" of the adapter BIOS is enabled.
+	So, whenever the reset occurs, the adapter goes to
+	offline and just become unavailable.
+
+	Jun'ichi Nomura [mailto:jnomura@mtc.biglobe.ne.jp]
+	---
+
+Release Date	: Mon Mar 07 12:27:22 EST 2005 - Seokmann Ju <sju@lsil.com>
+Current Version : 2.20.4.6 (scsi module), 2.20.2.6 (cmm module)
+Older Version	: 2.20.4.5 (scsi module), 2.20.2.5 (cmm module)
+
+1.	Added IOCTL backward compatibility.
+	Convert megaraid_mm driver to new compat_ioctl entry points.
+	I don't have easy access to hardware, so only compile tested.
+		- Signed-off-by:Andi Kleen <ak@muc.de>
+
+2.	megaraid_mbox fix: wrong order of arguments in memset()
+	That, BTW, shows why cross-builds are useful-the only indication of
+	problem had been a new warning showing up in sparse output on alpha
+	build (number of exceeding 256 got truncated).
+		- Signed-off-by: Al Viro
+		<viro@parcelfarce.linux.theplanet.co.uk>
+
+3.	Convert pci_module_init to pci_register_driver
+	Convert from pci_module_init to pci_register_driver
+	(from:http://kernelnewbies.org/KernelJanitors/TODO)
+		- Signed-off-by: Domen Puncer <domen@coderock.org>
+
+4.	Use the pre defined DMA mask constants from dma-mapping.h
+	Use the DMA_{64,32}BIT_MASK constants from dma-mapping.h when calling
+	pci_set_dma_mask() or pci_set_consistend_dma_mask(). See
+	http://marc.theaimsgroup.com/?t=108001993000001&r=1&w=2 for more
+	details.
+		Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
+		Signed-off-by: Domen Puncer <domen@coderock.org>
+
+5.	Remove SSID checking for Dobson, Lindsay, and Verde based products.
+	Checking the SSVID/SSID for controllers which have Dobson, Lindsay,
+	and Verde is unnecessary because device ID has been assigned by LSI
+	and it is unique value. So, all controllers with these IOPs have to be
+	supported by the driver regardless SSVID/SSID.
+
+6.	Date Thu, 27 Jan 2005 04:31:09 +0100 
+	From Herbert Poetzl <> 
+	Subject RFC: assert_spin_locked() for 2.6 
+
+	Greetings!
+
+	overcautious programming will kill your kernel ;)
+	ever thought about checking a spin_lock or even
+	asserting that it must be held (maybe just for
+	spinlock debugging?) ...
+
+	there are several checks present in the kernel
+	where somebody does a variation on the following:
+
+	  BUG_ON(!spin_is_locked(&some_lock));
+
+	so what's wrong about that? nothing, unless you
+	compile the code with CONFIG_DEBUG_SPINLOCK but 
+	without CONFIG_SMP ... in which case the BUG()
+	will kill your kernel ...
+
+	maybe it's not advised to make such assertions, 
+	but here is a solution which works for me ...
+	(compile tested for sh, x86_64 and x86, boot/run
+	tested for x86 only)
+
+	best,
+	Herbert
+
+		- Herbert Poetzl <herbert@13thfloor.at>, Thu, 27 Jan 2005
+
+Release Date	: Thu Feb 03 12:27:22 EST 2005 - Seokmann Ju <sju@lsil.com>
+Current Version	: 2.20.4.5 (scsi module), 2.20.2.5 (cmm module)
+Older Version	: 2.20.4.4 (scsi module), 2.20.2.4 (cmm module)
+
+1.	Modified name of two attributes in scsi_host_template.
+	On Wed, 2005-02-02 at 10:56 -0500, Ju, Seokmann wrote:
+	> +	.sdev_attrs			= megaraid_device_attrs,
+	> +	.shost_attrs			= megaraid_class_device_attrs,
+
+	These are, perhaps, slightly confusing names.
+	The terms device and class_device have well defined meanings in the
+	generic device model, neither of which is what you mean here.
+	Why not simply megaraid_sdev_attrs and megaraid_shost_attrs?
+
+	Other than this, it looks fine to me too.
+
+Release Date	: Thu Jan 27 00:01:03 EST 2005 - Atul Mukker <atulm@lsil.com>
+Current Version	: 2.20.4.4 (scsi module), 2.20.2.5 (cmm module)
+Older Version	: 2.20.4.3 (scsi module), 2.20.2.4 (cmm module)
+
+1.	Bump up the version of scsi module due to its conflict.
+
+Release Date	: Thu Jan 21 00:01:03 EST 2005 - Atul Mukker <atulm@lsil.com>
+Current Version	: 2.20.4.3 (scsi module), 2.20.2.5 (cmm module)
+Older Version	: 2.20.4.2 (scsi module), 2.20.2.4 (cmm module)
+
+1.	Remove driver ioctl for logical drive to scsi address translation and
+	replace with the sysfs attribute. To remove drives and change
+	capacity, application shall now use the device attribute to get the
+	logical drive number for a scsi device. For adding newly created
+	logical drives, class device attribute would be required to uniquely
+	identify each controller.
+		- Atul Mukker <atulm@lsil.com>
+
+	"James, I've been thinking about this a little more, and you may be on
+	to something here. Let each driver add files as such:"
+
+		- Matt Domsch <Matt_Domsch@dell.com>, 12.15.2004
+		 linux-scsi mailing list
+
+
+	"Then, if you simply publish your LD number as an extra parameter of
+	the device, you can look through /sys to find it."
+
+		- James Bottomley <James.Bottomley@SteelEye.com>, 01.03.2005
+		 linux-scsi mailing list
+
+
+	"I don't see why not ... it's your driver, you can publish whatever
+	extra information you need as scsi_device attributes; that was one of
+	the designs of the extensible attribute system."
+
+		- James Bottomley <James.Bottomley@SteelEye.com>, 01.06.2005
+		 linux-scsi mailing list
+
+2.	Add AMI megaraid support - Brian King <brking@charter.net>
+		PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID3,
+		PCI_VENDOR_ID_AMI, PCI_SUBSYS_ID_PERC3_DC,
+
+3.	Make some code static - Adrian Bunk <bunk@stusta.de>
+	Date:	Mon, 15 Nov 2004 03:14:57 +0100
+
+	The patch below makes some needlessly global code static.
+	-wait_queue_head_t wait_q;
+	+static wait_queue_head_t wait_q;
+
+	Signed-off-by: Adrian Bunk <bunk@stusta.de>
+
+4.	Added NEC ROMB support - NEC MegaRAID PCI Express ROMB controller
+		PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_MEGARAID_NEC_ROMB_2E,
+		PCI_SUBSYS_ID_NEC, PCI_SUBSYS_ID_MEGARAID_NEC_ROMB_2E,
+
+5.	Fixed Tape drive issue : For any Direct CDB command to physical device
+	including tape, timeout value set by driver was 10 minutes. With this 
+	value, most of command will return within timeout. However, for those
+	command like ERASE or FORMAT, it takes more than an hour depends on
+	capacity of the device and the command could be terminated before it 
+	completes.
+	To address this issue, the 'timeout' field in the DCDB command will 
+	have NO TIMEOUT (i.e., 4) value as its timeout on DCDB command.
+
+
+
+Release Date	: Thu Dec  9 19:10:23 EST 2004
+	- Sreenivas Bagalkote <sreenib@lsil.com>
+
+Current Version	: 2.20.4.2 (scsi module), 2.20.2.4 (cmm module)
+Older Version	: 2.20.4.1 (scsi module), 2.20.2.3 (cmm module)
+
+i.	Introduced driver ioctl that returns scsi address for a given ld.
+	
+	"Why can't the existing sysfs interfaces be used to do this?"
+		- Brian King (brking@us.ibm.com)
+	
+	"I've looked into solving this another way, but I cannot see how
+	to get this driver-private mapping of logical drive number-> HCTL
+	without putting code something like this into the driver."
+
+	"...and by providing a mapping a function to userspace, the driver
+	is free to change its mapping algorithm in the future if necessary .."
+		- Matt Domsch (Matt_Domsch@dell.com)
+
+Release Date	: Thu Dec  9 19:02:14 EST 2004 - Sreenivas Bagalkote <sreenib@lsil.com>
+
+Current Version	: 2.20.4.1 (scsi module), 2.20.2.3 (cmm module)
+Older Version	: 2.20.4.1 (scsi module), 2.20.2.2 (cmm module)
+
+i.	Fix a bug in kioc's dma buffer deallocation
+
+Release Date	: Thu Nov  4 18:24:56 EST 2004 - Sreenivas Bagalkote <sreenib@lsil.com>
+
+Current Version	: 2.20.4.1 (scsi module), 2.20.2.2 (cmm module)
+Older Version	: 2.20.4.0 (scsi module), 2.20.2.1 (cmm module)
+
+i.	Handle IOCTL cmd timeouts more properly.
+
+ii.	pci_dma_sync_{sg,single}_for_cpu was introduced into megaraid_mbox
+	incorrectly (instead of _for_device). Changed to appropriate 
+	pci_dma_sync_{sg,single}_for_device.
+
+Release Date	: Wed Oct 06 11:15:29 EDT 2004 - Sreenivas Bagalkote <sreenib@lsil.com>
+Current Version	: 2.20.4.0 (scsi module), 2.20.2.1 (cmm module)
+Older Version	: 2.20.4.0 (scsi module), 2.20.2.0 (cmm module)
+
+i.	Remove CONFIG_COMPAT around register_ioctl32_conversion
+
+Release Date	: Mon Sep 27 22:15:07 EDT 2004 - Atul Mukker <atulm@lsil.com>
+Current Version	: 2.20.4.0 (scsi module), 2.20.2.0 (cmm module)
+Older Version	: 2.20.3.1 (scsi module), 2.20.2.0 (cmm module)
+
+i.	Fix data corruption. Because of a typo in the driver, the IO packets
+	were wrongly shared by the ioctl path. This causes a whole IO command
+	to be replaced by an incoming ioctl command.
+
+Release Date	: Tue Aug 24 09:43:35 EDT 2004 - Atul Mukker <atulm@lsil.com>
+Current Version	: 2.20.3.1 (scsi module), 2.20.2.0 (cmm module)
+Older Version	: 2.20.3.0 (scsi module), 2.20.2.0 (cmm module)
+
+i.	Function reordering so that inline functions are defined before they
+	are actually used. It is now mandatory for GCC 3.4.1 (current stable)
+
+	Declare some heavy-weight functions to be non-inlined,
+	megaraid_mbox_build_cmd, megaraid_mbox_runpendq,
+	megaraid_mbox_prepare_pthru, megaraid_mbox_prepare_epthru,
+	megaraid_busywait_mbox
+
+		- Andrew Morton, 08.19.2004
+		linux-scsi mailing list
+
+	"Something else to clean up after inclusion: every instance of an
+	inline function is actually rendered as a full function call, because
+	the function is always used before it is defined.  Atul, please
+	re-arrange the code to eliminate the need for most (all) of the
+	function prototypes at the top of each file, and define (not just
+	declare with a prototype) each inline function before its first use"
+
+		- Matt Domsch <Matt_Domsch@dell.com>, 07.27.2004
+		linux-scsi mailing list
+
+
+ii.	Display elapsed time (countdown) while waiting for FW to boot.
+
+iii.	Module compilation reorder in Makefile so that unresolved symbols do
+	not occur when driver is compiled non-modular.
+
+		Patrick J. LoPresti <patl@users.sourceforge.net>, 8.22.2004
+		linux-scsi mailing list
+
+
+Release Date	: Thu Aug 19 09:58:33 EDT 2004 - Atul Mukker <atulm@lsil.com>
+Current Version	: 2.20.3.0 (scsi module), 2.20.2.0 (cmm module)
+Older Version	: 2.20.2.0 (scsi module), 2.20.1.0 (cmm module)
+
+i.	When copying the mailbox packets, copy only first 14 bytes (for 32-bit
+	mailboxes) and only first 22 bytes (for 64-bit mailboxes). This is to
+	avoid getting the stale values for busy bit. We want to set the busy
+	bit just before issuing command to the FW.
+
+ii.	In the reset handling, if the reseted command is not owned by the
+	driver, do not (wrongly) print information for the "attached" driver
+	packet.
+
+iii.	Have extended wait when issuing command in synchronous mode. This is
+	required for the cases where the option ROM is disabled and there is
+	no BIOS to start the controller. The FW starts to boot after receiving
+	the first command from the driver. The current driver has 1 second
+	timeout for the synchronous commands, which is far less than what is
+	actually required. We now wait up to MBOX_RESET_TIME (180 seconds) for
+	FW boot process.
+
+iv.	In megaraid_mbox_product_info, clear the mailbox contents completely
+	before preparing the command for inquiry3. This is to ensure that the
+	FW does not get junk values in the command.
+
+v.	Do away with the redundant LSI_CONFIG_COMPAT redefinition for
+	CONFIG_COMPAT. Replace <asm/ioctl32.h> with <linux/ioctl32.h>
+
+		- James Bottomley <James.Bottomley@SteelEye.com>, 08.17.2004
+		 linux-scsi mailing list
+
+vi.	Add support for 64-bit applications. Current drivers assume only
+	32-bit applications, even on 64-bit platforms. Use the "data" and
+	"buffer" fields of the mimd_t structure, instead of embedded 32-bit
+	addresses in application mailbox and passthru structures.
+
+vii.	Move the function declarations for the management module from
+	megaraid_mm.h to megaraid_mm.c
+
+		- Andrew Morton, 08.19.2004
+		linux-scsi mailing list
+
+viii.	Change default values for MEGARAID_NEWGEN, MEGARAID_MM, and
+	MEGARAID_MAILBOX to 'n' in Kconfig.megaraid
+
+		- Andrew Morton, 08.19.2004
+		linux-scsi mailing list
+
+ix.	replace udelay with msleep
+
+x.	Typos corrected in comments and whitespace adjustments, explicit
+	grouping of expressions.
+
+
+Release Date	: Fri Jul 23 15:22:07 EDT 2004 - Atul Mukker <atulm@lsil.com>
+Current Version	: 2.20.2.0 (scsi module), 2.20.1.0 (cmm module)
+Older Version	: 2.20.1.0 (scsi module), 2.20.0.0 (cmm module)
+
+i.	Add PCI ids for Acer ROMB 2E solution
+
+ii.	Add PCI ids for I4
+
+iii.	Typo corrected for subsys id for megaraid sata 300-4x
+
+iv.	Remove yield() while mailbox handshake in synchronous commands
+
+
+	"My other main gripe is things like this:
+
+	+	// wait for maximum 1 second for status to post
+	+	for (i = 0; i < 40000; i++) {
+	+		if (mbox->numstatus != 0xFF) break;
+	+		udelay(25); yield();
+	+	}
+
+	which litter the driver.  Use of yield() in drivers is deprecated."
+
+		- James Bottomley <James.Bottomley@SteelEye.com>, 07.14.2004
+		 linux-scsi mailing list
+
+v.	Remove redundant __megaraid_busywait_mbox routine
+
+vi.	Fix bug in the management module, which causes a system lockup when the
+	IO module is loaded and then unloaded, followed by executing any
+	management utility. The current version of management module does not
+	handle the adapter unregister properly.
+
+	Specifically, it still keeps a reference to the unregistered
+	controllers. To avoid this, the static array adapters has been
+	replaced by a dynamic list, which gets updated every time an adapter
+	is added or removed.
+
+	Also, during unregistration of the IO module, the resources are
+	now released in the exact reverse order of the allocation time
+	sequence.
+
+
+Release Date	: Fri Jun 25 18:58:43 EDT 2004 - Atul Mukker <atulm@lsil.com>
+Current Version	: 2.20.1.0
+Older Version	: megaraid 2.20.0.1
+
+i.	Stale list pointer in adapter causes kernel panic when module
+	megaraid_mbox is unloaded
+
+
+Release Date	: Thu Jun 24 20:37:11 EDT 2004 - Atul Mukker <atulm@lsil.com>
+Current Version	: 2.20.0.1
+Older Version	: megaraid 2.20.0.00
+
+i.	Modules are not 'y' by default, but depend on current definition of
+	SCSI & PCI.
+
+ii.	Redundant structure mraid_driver_t removed.
+
+iii.	Miscellaneous indentation and goto/label fixes.
+		- Christoph Hellwig <hch@infradead.org>, 06.24.2004 linux-scsi
+
+iv.	scsi_host_put(), do just before completing HBA shutdown.
+
+
+
+Release Date	: Mon Jun 21 19:53:54 EDT 2004 - Atul Mukker <atulm@lsil.com>
+Current Version	: 2.20.0.0
+Older Version	: megaraid 2.20.0.rc2 and 2.00.3
+
+i.	Independent module to interact with userland applications and
+	multiplex command to low level RAID module(s).
+
+	"Shared code in a third module, a "library module", is an acceptable
+	solution. modprobe automatically loads dependent modules, so users
+	running "modprobe driver1" or "modprobe driver2" would automatically
+	load the shared library module."
+
+		- Jeff Garzik <jgarzik@pobox.com> 02.25.2004 LKML
+
+	"As Jeff hinted, if your userspace<->driver API is consistent between
+	your new MPT-based RAID controllers and your existing megaraid driver,
+	then perhaps you need a single small helper module (lsiioctl or some
+	better name), loaded by both mptraid and megaraid automatically, which
+	handles registering the /dev/megaraid node dynamically. In this case,
+	both mptraid and megaraid would register with lsiioctl for each
+	adapter discovered, and lsiioctl would essentially be a switch,
+	redirecting userspace tool ioctls to the appropriate driver."
+
+		- Matt Domsch <Matt_Domsch@dell.com> 02.25.2004 LKML
+
+ii.	Remove C99 initializations from pci_device id.
+
+	"pci_id_table_g would be much more readable when not using C99
+	initializers.
+	PCI table doesn't change, there's lots of users that prefer the more
+	readable variant.  And it's really far less and much easier to grok
+	lines without C99 initializers."
+
+		- Christoph Hellwig <hch@infradead.org>, 05.28.2004 linux-scsi
+
+iii.	Many fixes as suggested by Christoph Hellwig <hch@infradead.org> on
+	linux-scsi, 05.28.2004
+
+iv.	We now support up to 32 parallel ioctl commands instead of current 1.
+	There is a conscious effort to let memory allocation not fail for ioctl
+	commands.
+
+v.	Do away with internal memory management. Use pci_pool_(create|alloc)
+	instead.
+
+vi.	Kill tasklet when unloading the driver.
+
+vii.	Do not use "host_lock', driver has fine-grain locks now to protect all
+	data structures.
+
+viii.	Optimize the build scatter-gather list routine. The callers already
+	know the data transfer address and length.
+
+ix.	Better implementation of error handling and recovery. Driver now
+	performs extended errors recovery for instances like scsi cable pull.
+
+x.	Disassociate the management commands with an overlaid scsi command.
+	Driver now treats the management packets as special packets and has a
+	dedicated callback routine.
diff --git a/Documentation/scsi/ChangeLog.megaraid_sas b/Documentation/scsi/ChangeLog.megaraid_sas
new file mode 100644
index 000000000..234ddabb2
--- /dev/null
+++ b/Documentation/scsi/ChangeLog.megaraid_sas
@@ -0,0 +1,641 @@
+Release Date    : Thu. Jun 19, 2014 17:00:00 PST 2014 -
+			(emaild-id:megaraidlinux@lsi.com)
+			Adam Radford
+			Kashyap Desai
+			Sumit Saxena
+			Uday Lingala
+Current Version : 06.803.02.00-rc1
+Old Version     : 06.803.01.00-rc1
+    1. Fix reset_mutex leak in megasas_reset_fusion().
+    2. Remove unused variables in megasas_instance.
+    3. Fix LD/VF affiliation parsing.
+    4. Add missing initial call to megasas_get_ld_vf_affiliation().
+    5. Version and Changelog update.
+-------------------------------------------------------------------------------
+Release Date    : Mon. Mar 10, 2014 17:00:00 PST 2014 -
+			(emaild-id:megaraidlinux@lsi.com)
+			Adam Radford
+			Kashyap Desai
+			Sumit Saxena
+Current Version : 06.803.01.00-rc1
+Old Version     : 06.700.06.00-rc1
+    1. Load correct raid context timeout value for multipathing & clustering.
+    2. Fix megasas_ioc_init_fusion to use local stack variable.
+    3. Return leaked MPT frames to MPT command pool.
+    4. Add Dell PowerEdge VRTX SR-IOV VF device support.
+    5. Version and Changelog update.
+-------------------------------------------------------------------------------
+Release Date    : Sat. Aug 31, 2013 17:00:00 PST 2013 -
+			(emaild-id:megaraidlinux@lsi.com)
+			Adam Radford
+			Kashyap Desai
+			Sumit Saxena
+Current Version : 06.700.06.00-rc1
+Old Version     : 06.600.18.00-rc1
+    1. Add High Availability clustering support using shared Logical Disks.
+    2. Version and Changelog update.
+-------------------------------------------------------------------------------
+Release Date    : Wed. May 15, 2013 17:00:00 PST 2013 -
+			(emaild-id:megaraidlinux@lsi.com)
+			Adam Radford
+			Kashyap Desai
+			Sumit Saxena
+Current Version : 06.600.18.00-rc1
+Old Version     : 06.506.00.00-rc1
+    1. Return DID_ERROR for scsi io, when controller is in critical h/w error.
+    2. Fix the interrupt mask for Gen2 controller.
+    3. Update balance count in driver to be in sync of firmware.
+    4. Free event detail memory without device ID check.
+    5. Set IO request timeout value provided by OS timeout for Tape devices.
+    6. Add support for MegaRAID Fury (device ID-0x005f) 12Gb/s controllers.
+    7. Add support to display Customer branding details in syslog.
+    8. Set IoFlags to enable Fast Path for JBODs for Invader/Fury(12 Gb/s)
+    controllers.
+    9. Add support for Extended MSI-x vectors for Invader and Fury(12Gb/s
+    HBA).
+    10.Add support for Uneven Span PRL11.
+    11.Add support to differentiate between iMR and MR Firmware.
+    12.Version and Changelog update.
+-------------------------------------------------------------------------------
+Release Date    : Sat. Feb 9, 2013 17:00:00 PST 2013 -
+			(emaild-id:megaraidlinux@lsi.com)
+			Adam Radford
+Current Version : 06.506.00.00-rc1
+Old Version     : 06.504.01.00-rc1
+    1. Add 4k FastPath DIF support.
+    2. Don't load DevHandle unless FastPath enabled.
+    3. Version and Changelog update.
+-------------------------------------------------------------------------------
+Release Date    : Mon. Oct 1, 2012 17:00:00 PST 2012 -
+			(emaild-id:megaraidlinux@lsi.com)
+			Adam Radford
+Current Version : 06.504.01.00-rc1
+Old Version     : 00.00.06.18-rc1
+    1. Removed un-needed completion_lock spinlock calls.
+    2. Add module param for configurable MSI-X vector count.
+    3. Load io_request DataLength in bytes.
+    4. Add array boundary check for SystemPD.
+    5. Add SystemPD FastPath support.
+    6. Remove duplicate code.
+    7. Version, Changelog, Copyright update.
+-------------------------------------------------------------------------------
+Release Date    : Tue. Jun 17, 2012 17:00:00 PST 2012 -
+			(emaild-id:megaraidlinux@lsi.com)
+			Adam Radford/Kashyap Desai
+Current Version : 00.00.06.18-rc1
+Old Version     : 00.00.06.15-rc1
+    1. Fix Copyright dates.
+    2. Add throttlequeuedepth module parameter.
+    3. Add resetwaittime module parameter.
+    4. Move poll_aen_lock initializer.
+-------------------------------------------------------------------------------
+Release Date    : Mon. Mar 19, 2012 17:00:00 PST 2012 -
+			(emaild-id:megaraidlinux@lsi.com)
+			Adam Radford
+Current Version : 00.00.06.15-rc1
+Old Version     : 00.00.06.14-rc1
+    1. Optimize HostMSIxVectors setting.
+    2. Add fpRead/WriteCapable, fpRead/WriteAcrossStripe checks.
+-------------------------------------------------------------------------------
+Release Date    : Fri. Jan 6, 2012 17:00:00 PST 2010 -
+			(emaild-id:megaraidlinux@lsi.com)
+			Adam Radford
+Current Version : 00.00.06.14-rc1
+Old Version     : 00.00.06.12-rc1
+    1. Fix reglockFlags for degraded raid5/6 for MR 9360/9380.
+    2. Mask off flags in ioctl path to prevent memory scribble with older
+       MegaCLI versions.
+    3. Remove poll_mode_io module parameter, sysfs node, and associated code.
+-------------------------------------------------------------------------------
+Release Date    : Wed. Oct 5, 2011 17:00:00 PST 2010 -
+			(emaild-id:megaraidlinux@lsi.com)
+			Adam Radford
+Current Version : 00.00.06.12-rc1
+Old Version     : 00.00.05.40-rc1
+    1. Continue booting immediately if FW in FAULT at driver load time.
+    2. Increase default cmds per lun to 256.
+    3. Fix mismatch in megasas_reset_fusion() mutex lock-unlock.
+    4. Remove some un-necessary code.
+    5. Clear state change interrupts for Fusion/Invader.
+    6. Clear FUSION_IN_RESET before enabling interrupts.
+    7. Add support for MegaRAID 9360/9380 12GB/s controllers.
+    8. Add multiple MSI-X vector/multiple reply queue support.
+    9. Add driver workaround for PERC5/1068 kdump kernel panic.
+-------------------------------------------------------------------------------
+Release Date    : Tue. Jul 26, 2011 17:00:00 PST 2010 -
+			(emaild-id:megaraidlinux@lsi.com)
+			Adam Radford
+Current Version : 00.00.05.40-rc1
+Old Version     : 00.00.05.38-rc1
+    1. Fix FastPath I/O to work with degraded RAID 1.
+    2. Add .change_queue_depth support.
+-------------------------------------------------------------------------------
+Release Date    : Wed. May 11, 2011 17:00:00 PST 2010 -
+			(emaild-id:megaraidlinux@lsi.com)
+			Adam Radford
+Current Version : 00.00.05.38-rc1
+Old Version     : 00.00.05.34-rc1
+    1. Remove MSI-X black list, use MFI_REG_STATE.ready.msiEnable.
+    2. Remove un-used function megasas_return_cmd_for_smid().
+    3. Check MFI_REG_STATE.fault.resetAdapter in megasas_reset_fusion().
+    4. Disable interrupts/free_irq() in megasas_shutdown().
+    5. Fix bug where AENs could be lost in probe() and resume().
+    6. Convert 6,10,12 byte CDB's to 16 byte CDB for large LBA's for FastPath
+       IO.
+    7. Add 1078 OCR support.
+-------------------------------------------------------------------------------
+Release Date    : Thu. Feb 24, 2011 17:00:00 PST 2010 -
+			(emaild-id:megaraidlinux@lsi.com)
+			Adam Radford
+Current Version : 00.00.05.34-rc1
+Old Version     : 00.00.05.29-rc1
+    1. Fix some failure gotos from megasas_probe_one(), etc.
+    2. Add missing check_and_restore_queue_depth() call in
+       complete_cmd_fusion().
+    3. Enable MSI-X before calling megasas_init_fw().
+    4. Call tasklet_schedule() even if outbound_intr_status == 0 for MFI based
+       boards in MSI-X mode.
+    5. Fix megasas_probe_one() to clear PCI_MSIX_FLAGS_ENABLE in msi control
+       register in kdump kernel.
+    6. Fix megasas_get_cmd() to only print "Command pool empty" if
+       megasas_dbg_lvl is set.
+    7. Fix megasas_build_dcdb_fusion() to not filter by TYPE_DISK.
+    8. Fix megasas_build_dcdb_fusion() to use io_request->LUN[1] field.
+    9. Add MR_EVT_CFG_CLEARED to megasas_aen_polling().
+    10. Fix tasklet_init() in megasas_init_fw() to use instancet->tasklet.
+    11. Fix fault state handling in megasas_transition_to_ready().
+    12. Fix max_sectors setting for IEEE SGL's.
+    13. Fix iMR OCR support to work correctly.
+-------------------------------------------------------------------------------
+Release Date    : Tues.  Dec 14, 2010 17:00:00 PST 2010 -
+			(emaild-id:megaraidlinux@lsi.com)
+			Adam Radford
+Current Version : 00.00.05.29-rc1
+Old Version     : 00.00.04.31-rc1
+    1. Rename megaraid_sas.c to megaraid_sas_base.c.
+    2. Update GPL headers.
+    3. Add MSI-X support and 'msix_disable' module parameter.
+    4. Use lowest memory bar (for SR-IOV VF support).
+    5. Add struct megasas_instance_temlate changes, and change all code to use
+       new instance entries:
+
+       irqreturn_t (*service_isr )(int irq, void *devp);
+       void (*tasklet)(unsigned long);
+       u32 (*init_adapter)(struct megasas_instance *);
+       u32 (*build_and_issue_cmd) (struct megasas_instance *,
+       struct scsi_cmnd *);
+       void (*issue_dcmd) (struct megasas_instance *instance,
+                              struct megasas_cmd *cmd);
+
+   6. Add code to support MegaRAID 9265/9285 controllers device id (0x5b).
+-------------------------------------------------------------------------------
+1 Release Date    : Thur.  May 03, 2010 09:12:45 PST 2009 -
+			(emaild-id:megaraidlinux@lsi.com)
+			Bo Yang
+
+2 Current Version : 00.00.04.31-rc1
+3 Older Version   : 00.00.04.17.1-rc1
+
+1.	Add the Online Controller Reset (OCR) to the Driver.
+	OCR is the new feature for megaraid_sas driver which
+	will allow the fw to do the chip reset which will not
+	affect the OS behavior.
+
+	To add the OCR support, driver need to do:
+		a). reset the controller chips -- Xscale and Gen2 which
+		will change the function calls and add the reset function
+		related to this two chips.
+
+		b). during the reset, driver will store the pending cmds
+		which not returned by FW to driver's pending queue.  Driver
+		will re-issue those pending cmds again to FW after the OCR
+		finished.
+
+		c). In driver's timeout routine, driver will report to
+		OS as reset. Also driver's queue routine will block the
+		cmds until the OCR finished.
+
+		d). in Driver's ISR routine, if driver get the FW state as
+		state change, FW in Failure status and FW support online controller
+		reset (OCR), driver will start to do the controller reset.
+
+		e). In driver's IOCTL routine, the application cmds will wait for the
+		OCR to finish, then issue the cmds to FW.
+
+		f). Before driver kill adapter, driver will do last chance of
+		OCR to see if driver can bring back the FW.
+
+2.	Add the support update flag to the driver to tell LSI megaraid_sas
+	application which driver will support the device update.  So application
+	will not need to do the device update after application add/del the device
+	from the system.
+3.	In driver's timeout routine, driver will do three time reset if fw is in
+	failed state.  Driver will kill adapter if can't bring back FW after the
+	this three times reset.
+4.	Add the input parameter max_sectors to 1MB support to our GEN2 controller.
+	customer can use the input parameter max_sectors to add 1MB support to GEN2
+	controller.
+
+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 variable 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 superfluous instance_lock
+
+	gets rid of the otherwise superfluous instance_lock and avoids an unsafe
+	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
+
+	"This 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 definitions that will be initialised to appropriate 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 codepaths 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>