Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...

[pandora-kernel.git] / Documentation / scsi / ChangeLog.megaraid_sas

diff --git a/Documentation/scsi/ChangeLog.megaraid_sas b/Documentation/scsi/ChangeLog.megaraid_sas
index 3002356..00301ed 100644 (file)
--- a/Documentation/scsi/ChangeLog.megaraid_sas
+++ b/Documentation/scsi/ChangeLog.megaraid_sas
@@ -1,3 +1,50 @@
+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
+       affact the OS behavious.
+
+       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 paramenter 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