/Documentation/scsi/ChangeLog.megaraid
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- 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 <akpm@osdl.org>, 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 <akpm@osdl.org>, 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 <akpm@osdl.org>, 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 managment 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.