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![Lucas De Marchi](/assets/img/avatar_default.png)
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
614 lines
23 KiB
Text
614 lines
23 KiB
Text
Release Date : Thu Nov 16 15:32:35 EST 2006 -
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Sumant Patro <sumant.patro@lsi.com>
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Current Version : 2.20.5.1 (scsi module), 2.20.2.6 (cmm module)
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Older Version : 2.20.4.9 (scsi module), 2.20.2.6 (cmm module)
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1. Changes in Initialization to fix kdump failure.
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Send SYNC command on loading.
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This command clears the pending commands in the adapter
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and re-initialize its internal RAID structure.
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Without this change, megaraid driver either panics or fails to
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initialize the adapter during kdump's second kernel boot
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if there are pending commands or interrupts from other devices
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sharing the same IRQ.
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2. Authors email-id domain name changed from lsil.com to lsi.com.
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Also modified the MODULE_AUTHOR to megaraidlinux@lsi.com
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Release Date : Fri May 19 09:31:45 EST 2006 - Seokmann Ju <sju@lsil.com>
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Current Version : 2.20.4.9 (scsi module), 2.20.2.6 (cmm module)
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Older Version : 2.20.4.8 (scsi module), 2.20.2.6 (cmm module)
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1. Fixed a bug in megaraid_init_mbox().
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Customer reported "garbage in file on x86_64 platform".
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Root Cause: the driver registered controllers as 64-bit DMA capable
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for those which are not support it.
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Fix: Made change in the function inserting identification machanism
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identifying 64-bit DMA capable controllers.
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> -----Original Message-----
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> From: Vasily Averin [mailto:vvs@sw.ru]
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> Sent: Thursday, May 04, 2006 2:49 PM
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> To: linux-scsi@vger.kernel.org; Kolli, Neela; Mukker, Atul;
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> Ju, Seokmann; Bagalkote, Sreenivas;
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> James.Bottomley@SteelEye.com; devel@openvz.org
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> Subject: megaraid_mbox: garbage in file
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>
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> Hello all,
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>
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> I've investigated customers claim on the unstable work of
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> their node and found a
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> strange effect: reading from some files leads to the
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> "attempt to access beyond end of device" messages.
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>
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> I've checked filesystem, memory on the node, motherboard BIOS
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> version, but it
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> does not help and issue still has been reproduced by simple
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> file reading.
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>
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> Reproducer is simple:
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>
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> echo 0xffffffff >/proc/sys/dev/scsi/logging_level ;
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> cat /vz/private/101/root/etc/ld.so.cache >/tmp/ttt ;
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> echo 0 >/proc/sys/dev/scsi/logging
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>
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> It leads to the following messages in dmesg
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>
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> sd_init_command: disk=sda, block=871769260, count=26
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> sda : block=871769260
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> sda : reading 26/26 512 byte blocks.
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> scsi_add_timer: scmd: f79ed980, time: 7500, (c02b1420)
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> sd 0:1:0:0: send 0xf79ed980 sd 0:1:0:0:
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> command: Read (10): 28 00 33 f6 24 ac 00 00 1a 00
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> buffer = 0xf7cfb540, bufflen = 13312, done = 0xc0366b40,
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> queuecommand 0xc0344010
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> leaving scsi_dispatch_cmnd()
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> scsi_delete_timer: scmd: f79ed980, rtn: 1
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> sd 0:1:0:0: done 0xf79ed980 SUCCESS 0 sd 0:1:0:0:
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> command: Read (10): 28 00 33 f6 24 ac 00 00 1a 00
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> scsi host busy 1 failed 0
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> sd 0:1:0:0: Notifying upper driver of completion (result 0)
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> sd_rw_intr: sda: res=0x0
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> 26 sectors total, 13312 bytes done.
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> use_sg is 4
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> attempt to access beyond end of device
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> sda6: rw=0, want=1044134458, limit=951401367
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> Buffer I/O error on device sda6, logical block 522067228
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> attempt to access beyond end of device
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2. When INQUIRY with EVPD bit set issued to the MegaRAID controller,
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system memory gets corrupted.
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Root Cause: MegaRAID F/W handle the INQUIRY with EVPD bit set
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incorrectly.
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Fix: MegaRAID F/W has fixed the problem and being process of release,
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soon. Meanwhile, driver will filter out the request.
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3. One of member in the data structure of the driver leads unaligne
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issue on 64-bit platform.
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Customer reporeted "kernel unaligned access addrss" issue when
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application communicates with MegaRAID HBA driver.
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Root Cause: in uioc_t structure, one of member had misaligned and it
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led system to display the error message.
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Fix: A patch submitted to community from following folk.
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> -----Original Message-----
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> From: linux-scsi-owner@vger.kernel.org
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> [mailto:linux-scsi-owner@vger.kernel.org] On Behalf Of Sakurai Hiroomi
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> Sent: Wednesday, July 12, 2006 4:20 AM
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> To: linux-scsi@vger.kernel.org; linux-kernel@vger.kernel.org
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> Subject: Re: Help: strange messages from kernel on IA64 platform
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>
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> Hi,
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>
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> I saw same message.
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>
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> When GAM(Global Array Manager) is started, The following
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> message output.
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> kernel: kernel unaligned access to 0xe0000001fe1080d4,
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> ip=0xa000000200053371
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>
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> The uioc structure used by ioctl is defined by packed,
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> the allignment of each member are disturbed.
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> In a 64 bit structure, the allignment of member doesn't fit 64 bit
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> boundary. this causes this messages.
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> In a 32 bit structure, we don't see the message because the allinment
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> of member fit 32 bit boundary even if packed is specified.
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>
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> patch
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> I Add 32 bit dummy member to fit 64 bit boundary. I tested.
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> We confirmed this patch fix the problem by IA64 server.
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>
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> **************************************************************
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> ****************
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> --- linux-2.6.9/drivers/scsi/megaraid/megaraid_ioctl.h.orig
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> 2006-04-03 17:13:03.000000000 +0900
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> +++ linux-2.6.9/drivers/scsi/megaraid/megaraid_ioctl.h
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> 2006-04-03 17:14:09.000000000 +0900
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> @@ -132,6 +132,10 @@
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> /* Driver Data: */
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> void __user * user_data;
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> uint32_t user_data_len;
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> +
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> + /* 64bit alignment */
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> + uint32_t pad_0xBC;
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> +
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> mraid_passthru_t __user *user_pthru;
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>
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> mraid_passthru_t *pthru32;
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> **************************************************************
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> ****************
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Release Date : Mon Apr 11 12:27:22 EST 2006 - Seokmann Ju <sju@lsil.com>
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Current Version : 2.20.4.8 (scsi module), 2.20.2.6 (cmm module)
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Older Version : 2.20.4.7 (scsi module), 2.20.2.6 (cmm module)
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1. Fixed a bug in megaraid_reset_handler().
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Customer reported "Unable to handle kernel NULL pointer dereference
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at virtual address 00000000" when system goes to reset condition
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for some reason. It happened randomly.
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Root Cause: in the megaraid_reset_handler(), there is possibility not
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returning pending packets in the pend_list if there are multiple
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pending packets.
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Fix: Made the change in the driver so that it will return all packets
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in the pend_list.
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2. Added change request.
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As found in the following URL, rmb() only didn't help the
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problem. I had to increase the loop counter to 0xFFFFFF. (6 F's)
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http://marc.theaimsgroup.com/?l=linux-scsi&m=110971060502497&w=2
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I attached a patch for your reference, too.
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Could you check and get this fix in your driver?
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Best Regards,
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Jun'ichi Nomura
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Release Date : Fri Nov 11 12:27:22 EST 2005 - Seokmann Ju <sju@lsil.com>
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Current Version : 2.20.4.7 (scsi module), 2.20.2.6 (cmm module)
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Older Version : 2.20.4.6 (scsi module), 2.20.2.6 (cmm module)
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1. Sorted out PCI IDs to remove megaraid support overlaps.
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Based on the patch from Daniel, sorted out PCI IDs along with
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character node name change from 'megadev' to 'megadev_legacy' to avoid
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conflict.
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---
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Hopefully we'll be getting the build restriction zapped much sooner,
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but we should also be thinking about totally removing the hardware
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support overlap in the megaraid drivers.
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This patch pencils in a date of Feb 06 for this, and performs some
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printk abuse in hope that existing legacy users might pick up on what's
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going on.
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Signed-off-by: Daniel Drake <dsd@gentoo.org>
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---
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2. Fixed a issue: megaraid always fails to reset handler.
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---
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I found that the megaraid driver always fails to reset the
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adapter with the following message:
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megaraid: resetting the host...
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megaraid mbox: reset sequence completed successfully
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megaraid: fast sync command timed out
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megaraid: reservation reset failed
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when the "Cluster mode" of the adapter BIOS is enabled.
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So, whenever the reset occurs, the adapter goes to
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offline and just become unavailable.
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Jun'ichi Nomura [mailto:jnomura@mtc.biglobe.ne.jp]
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---
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Release Date : Mon Mar 07 12:27:22 EST 2005 - Seokmann Ju <sju@lsil.com>
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Current Version : 2.20.4.6 (scsi module), 2.20.2.6 (cmm module)
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Older Version : 2.20.4.5 (scsi module), 2.20.2.5 (cmm module)
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1. Added IOCTL backward compatibility.
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Convert megaraid_mm driver to new compat_ioctl entry points.
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I don't have easy access to hardware, so only compile tested.
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- Signed-off-by:Andi Kleen <ak@muc.de>
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2. megaraid_mbox fix: wrong order of arguments in memset()
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That, BTW, shows why cross-builds are useful-the only indication of
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problem had been a new warning showing up in sparse output on alpha
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build (number of exceeding 256 got truncated).
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- Signed-off-by: Al Viro
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<viro@parcelfarce.linux.theplanet.co.uk>
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3. Convert pci_module_init to pci_register_driver
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Convert from pci_module_init to pci_register_driver
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(from:http://kernelnewbies.org/KernelJanitors/TODO)
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- Signed-off-by: Domen Puncer <domen@coderock.org>
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4. Use the pre defined DMA mask constants from dma-mapping.h
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Use the DMA_{64,32}BIT_MASK constants from dma-mapping.h when calling
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pci_set_dma_mask() or pci_set_consistend_dma_mask(). See
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http://marc.theaimsgroup.com/?t=108001993000001&r=1&w=2 for more
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details.
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Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
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Signed-off-by: Domen Puncer <domen@coderock.org>
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5. Remove SSID checking for Dobson, Lindsay, and Verde based products.
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Checking the SSVID/SSID for controllers which have Dobson, Lindsay,
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and Verde is unnecessary because device ID has been assigned by LSI
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and it is unique value. So, all controllers with these IOPs have to be
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supported by the driver regardless SSVID/SSID.
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6. Date Thu, 27 Jan 2005 04:31:09 +0100
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From Herbert Poetzl <>
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Subject RFC: assert_spin_locked() for 2.6
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Greetings!
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overcautious programming will kill your kernel ;)
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ever thought about checking a spin_lock or even
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asserting that it must be held (maybe just for
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spinlock debugging?) ...
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there are several checks present in the kernel
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where somebody does a variation on the following:
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BUG_ON(!spin_is_locked(&some_lock));
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so what's wrong about that? nothing, unless you
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compile the code with CONFIG_DEBUG_SPINLOCK but
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without CONFIG_SMP ... in which case the BUG()
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will kill your kernel ...
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maybe it's not advised to make such assertions,
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but here is a solution which works for me ...
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(compile tested for sh, x86_64 and x86, boot/run
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tested for x86 only)
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best,
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Herbert
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- Herbert Poetzl <herbert@13thfloor.at>, Thu, 27 Jan 2005
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Release Date : Thu Feb 03 12:27:22 EST 2005 - Seokmann Ju <sju@lsil.com>
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Current Version : 2.20.4.5 (scsi module), 2.20.2.5 (cmm module)
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Older Version : 2.20.4.4 (scsi module), 2.20.2.4 (cmm module)
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1. Modified name of two attributes in scsi_host_template.
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On Wed, 2005-02-02 at 10:56 -0500, Ju, Seokmann wrote:
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> + .sdev_attrs = megaraid_device_attrs,
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> + .shost_attrs = megaraid_class_device_attrs,
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These are, perhaps, slightly confusing names.
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The terms device and class_device have well defined meanings in the
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generic device model, neither of which is what you mean here.
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Why not simply megaraid_sdev_attrs and megaraid_shost_attrs?
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Other than this, it looks fine to me too.
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Release Date : Thu Jan 27 00:01:03 EST 2005 - Atul Mukker <atulm@lsil.com>
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Current Version : 2.20.4.4 (scsi module), 2.20.2.5 (cmm module)
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Older Version : 2.20.4.3 (scsi module), 2.20.2.4 (cmm module)
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1. Bump up the version of scsi module due to its conflict.
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Release Date : Thu Jan 21 00:01:03 EST 2005 - Atul Mukker <atulm@lsil.com>
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Current Version : 2.20.4.3 (scsi module), 2.20.2.5 (cmm module)
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Older Version : 2.20.4.2 (scsi module), 2.20.2.4 (cmm module)
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1. Remove driver ioctl for logical drive to scsi address translation and
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replace with the sysfs attribute. To remove drives and change
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capacity, application shall now use the device attribute to get the
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logical drive number for a scsi device. For adding newly created
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logical drives, class device attribute would be required to uniquely
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identify each controller.
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- Atul Mukker <atulm@lsil.com>
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"James, I've been thinking about this a little more, and you may be on
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to something here. Let each driver add files as such:"
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- Matt Domsch <Matt_Domsch@dell.com>, 12.15.2004
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linux-scsi mailing list
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"Then, if you simply publish your LD number as an extra parameter of
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the device, you can look through /sys to find it."
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- James Bottomley <James.Bottomley@SteelEye.com>, 01.03.2005
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linux-scsi mailing list
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"I don't see why not ... it's your driver, you can publish whatever
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extra information you need as scsi_device attributes; that was one of
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the designs of the extensible attribute system."
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- James Bottomley <James.Bottomley@SteelEye.com>, 01.06.2005
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linux-scsi mailing list
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2. Add AMI megaraid support - Brian King <brking@charter.net>
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PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID3,
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PCI_VENDOR_ID_AMI, PCI_SUBSYS_ID_PERC3_DC,
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3. Make some code static - Adrian Bunk <bunk@stusta.de>
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Date: Mon, 15 Nov 2004 03:14:57 +0100
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The patch below makes some needlessly global code static.
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-wait_queue_head_t wait_q;
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+static wait_queue_head_t wait_q;
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Signed-off-by: Adrian Bunk <bunk@stusta.de>
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4. Added NEC ROMB support - NEC MegaRAID PCI Express ROMB controller
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PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_MEGARAID_NEC_ROMB_2E,
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PCI_SUBSYS_ID_NEC, PCI_SUBSYS_ID_MEGARAID_NEC_ROMB_2E,
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5. Fixed Tape drive issue : For any Direct CDB command to physical device
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including tape, timeout value set by driver was 10 minutes. With this
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value, most of command will return within timeout. However, for those
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command like ERASE or FORMAT, it takes more than an hour depends on
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capacity of the device and the command could be terminated before it
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completes.
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To address this issue, the 'timeout' field in the DCDB command will
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have NO TIMEOUT (i.e., 4) value as its timeout on DCDB command.
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Release Date : Thu Dec 9 19:10:23 EST 2004
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- Sreenivas Bagalkote <sreenib@lsil.com>
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Current Version : 2.20.4.2 (scsi module), 2.20.2.4 (cmm module)
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Older Version : 2.20.4.1 (scsi module), 2.20.2.3 (cmm module)
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i. Introduced driver ioctl that returns scsi address for a given ld.
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"Why can't the existing sysfs interfaces be used to do this?"
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- Brian King (brking@us.ibm.com)
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"I've looked into solving this another way, but I cannot see how
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to get this driver-private mapping of logical drive number-> HCTL
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without putting code something like this into the driver."
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"...and by providing a mapping a function to userspace, the driver
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is free to change its mapping algorithm in the future if necessary .."
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- Matt Domsch (Matt_Domsch@dell.com)
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Release Date : Thu Dec 9 19:02:14 EST 2004 - Sreenivas Bagalkote <sreenib@lsil.com>
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Current Version : 2.20.4.1 (scsi module), 2.20.2.3 (cmm module)
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Older Version : 2.20.4.1 (scsi module), 2.20.2.2 (cmm module)
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i. Fix a bug in kioc's dma buffer deallocation
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Release Date : Thu Nov 4 18:24:56 EST 2004 - Sreenivas Bagalkote <sreenib@lsil.com>
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Current Version : 2.20.4.1 (scsi module), 2.20.2.2 (cmm module)
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Older Version : 2.20.4.0 (scsi module), 2.20.2.1 (cmm module)
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i. Handle IOCTL cmd timeouts more properly.
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ii. pci_dma_sync_{sg,single}_for_cpu was introduced into megaraid_mbox
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incorrectly (instead of _for_device). Changed to appropriate
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pci_dma_sync_{sg,single}_for_device.
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Release Date : Wed Oct 06 11:15:29 EDT 2004 - Sreenivas Bagalkote <sreenib@lsil.com>
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Current Version : 2.20.4.0 (scsi module), 2.20.2.1 (cmm module)
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Older Version : 2.20.4.0 (scsi module), 2.20.2.0 (cmm module)
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i. Remove CONFIG_COMPAT around register_ioctl32_conversion
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Release Date : Mon Sep 27 22:15:07 EDT 2004 - Atul Mukker <atulm@lsil.com>
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Current Version : 2.20.4.0 (scsi module), 2.20.2.0 (cmm module)
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Older Version : 2.20.3.1 (scsi module), 2.20.2.0 (cmm module)
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i. Fix data corruption. Because of a typo in the driver, the IO packets
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were wrongly shared by the ioctl path. This causes a whole IO command
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to be replaced by an incoming ioctl command.
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Release Date : Tue Aug 24 09:43:35 EDT 2004 - Atul Mukker <atulm@lsil.com>
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Current Version : 2.20.3.1 (scsi module), 2.20.2.0 (cmm module)
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Older Version : 2.20.3.0 (scsi module), 2.20.2.0 (cmm module)
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i. Function reordering so that inline functions are defined before they
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are actually used. It is now mandatory for GCC 3.4.1 (current stable)
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Declare some heavy-weight functions to be non-inlined,
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megaraid_mbox_build_cmd, megaraid_mbox_runpendq,
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megaraid_mbox_prepare_pthru, megaraid_mbox_prepare_epthru,
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megaraid_busywait_mbox
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- Andrew Morton, 08.19.2004
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linux-scsi mailing list
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"Something else to clean up after inclusion: every instance of an
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inline function is actually rendered as a full function call, because
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the function is always used before it is defined. Atul, please
|
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re-arrange the code to eliminate the need for most (all) of the
|
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function prototypes at the top of each file, and define (not just
|
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declare with a prototype) each inline function before its first use"
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|
|
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- Matt Domsch <Matt_Domsch@dell.com>, 07.27.2004
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linux-scsi mailing list
|
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|
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ii. Display elapsed time (countdown) while waiting for FW to boot.
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iii. Module compilation reorder in Makefile so that unresolved symbols do
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not occur when driver is compiled non-modular.
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|
|
Patrick J. LoPresti <patl@users.sourceforge.net>, 8.22.2004
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linux-scsi mailing list
|
|
|
|
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Release Date : Thu Aug 19 09:58:33 EDT 2004 - Atul Mukker <atulm@lsil.com>
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Current Version : 2.20.3.0 (scsi module), 2.20.2.0 (cmm module)
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Older Version : 2.20.2.0 (scsi module), 2.20.1.0 (cmm module)
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|
|
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i. When copying the mailbox packets, copy only first 14 bytes (for 32-bit
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mailboxes) and only first 22 bytes (for 64-bit mailboxes). This is to
|
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avoid getting the stale values for busy bit. We want to set the busy
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bit just before issuing command to the FW.
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|
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ii. In the reset handling, if the reseted command is not owned by the
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driver, do not (wrongly) print information for the "attached" driver
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packet.
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iii. Have extended wait when issuing command in synchronous mode. This is
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|
required for the cases where the option ROM is disabled and there is
|
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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
|
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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
|
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FW boot process.
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iv. In megaraid_mbox_product_info, clear the mailbox contents completely
|
|
before preparing the command for inquiry3. This is to ensure that the
|
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FW does not get junk values in the command.
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v. Do away with the redundant LSI_CONFIG_COMPAT redefinition for
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|
CONFIG_COMPAT. Replace <asm/ioctl32.h> with <linux/ioctl32.h>
|
|
|
|
- James Bottomley <James.Bottomley@SteelEye.com>, 08.17.2004
|
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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.
|
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|
|
vii. Move the function declarations for the management module from
|
|
megaraid_mm.h to megaraid_mm.c
|
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|
|
- Andrew Morton, 08.19.2004
|
|
linux-scsi mailing list
|
|
|
|
viii. Change default values for MEGARAID_NEWGEN, MEGARAID_MM, and
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|
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.
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|
Release Date : Fri Jul 23 15:22:07 EDT 2004 - Atul Mukker <atulm@lsil.com>
|
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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)
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|
|
i. Add PCI ids for Acer ROMB 2E solution
|
|
|
|
ii. Add PCI ids for I4
|
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|
|
iii. Typo corrected for subsys id for megaraid sata 300-4x
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|
|
iv. Remove yield() while mailbox handshake in synchronous commands
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|
|
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"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();
|
|
+ }
|
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|
|
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.
|