| 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. |