1Release Date : Thu Nov 16 15:32:35 EST 2006 - 2 Sumant Patro <sumant.patro@lsi.com> 3Current Version : 2.20.5.1 (scsi module), 2.20.2.6 (cmm module) 4Older Version : 2.20.4.9 (scsi module), 2.20.2.6 (cmm module) 5 61. Changes in Initialization to fix kdump failure. 7 Send SYNC command on loading. 8 This command clears the pending commands in the adapter 9 and re-initialize its internal RAID structure. 10 Without this change, megaraid driver either panics or fails to 11 initialize the adapter during kdump's second kernel boot 12 if there are pending commands or interrupts from other devices 13 sharing the same IRQ. 142. Authors email-id domain name changed from lsil.com to lsi.com. 15 Also modified the MODULE_AUTHOR to megaraidlinux@lsi.com 16 17Release Date : Fri May 19 09:31:45 EST 2006 - Seokmann Ju <sju@lsil.com> 18Current Version : 2.20.4.9 (scsi module), 2.20.2.6 (cmm module) 19Older Version : 2.20.4.8 (scsi module), 2.20.2.6 (cmm module) 20 211. Fixed a bug in megaraid_init_mbox(). 22 Customer reported "garbage in file on x86_64 platform". 23 Root Cause: the driver registered controllers as 64-bit DMA capable 24 for those which are not support it. 25 Fix: Made change in the function inserting identification mechanism 26 identifying 64-bit DMA capable controllers. 27 28 > -----Original Message----- 29 > From: Vasily Averin [mailto:vvs@sw.ru] 30 > Sent: Thursday, May 04, 2006 2:49 PM 31 > To: linux-scsi@vger.kernel.org; Kolli, Neela; Mukker, Atul; 32 > Ju, Seokmann; Bagalkote, Sreenivas; 33 > James.Bottomley@SteelEye.com; devel@openvz.org 34 > Subject: megaraid_mbox: garbage in file 35 > 36 > Hello all, 37 > 38 > I've investigated customers claim on the unstable work of 39 > their node and found a 40 > strange effect: reading from some files leads to the 41 > "attempt to access beyond end of device" messages. 42 > 43 > I've checked filesystem, memory on the node, motherboard BIOS 44 > version, but it 45 > does not help and issue still has been reproduced by simple 46 > file reading. 47 > 48 > Reproducer is simple: 49 > 50 > echo 0xffffffff >/proc/sys/dev/scsi/logging_level ; 51 > cat /vz/private/101/root/etc/ld.so.cache >/tmp/ttt ; 52 > echo 0 >/proc/sys/dev/scsi/logging 53 > 54 > It leads to the following messages in dmesg 55 > 56 > sd_init_command: disk=sda, block=871769260, count=26 57 > sda : block=871769260 58 > sda : reading 26/26 512 byte blocks. 59 > scsi_add_timer: scmd: f79ed980, time: 7500, (c02b1420) 60 > sd 0:1:0:0: send 0xf79ed980 sd 0:1:0:0: 61 > command: Read (10): 28 00 33 f6 24 ac 00 00 1a 00 62 > buffer = 0xf7cfb540, bufflen = 13312, done = 0xc0366b40, 63 > queuecommand 0xc0344010 64 > leaving scsi_dispatch_cmnd() 65 > scsi_delete_timer: scmd: f79ed980, rtn: 1 66 > sd 0:1:0:0: done 0xf79ed980 SUCCESS 0 sd 0:1:0:0: 67 > command: Read (10): 28 00 33 f6 24 ac 00 00 1a 00 68 > scsi host busy 1 failed 0 69 > sd 0:1:0:0: Notifying upper driver of completion (result 0) 70 > sd_rw_intr: sda: res=0x0 71 > 26 sectors total, 13312 bytes done. 72 > use_sg is 4 73 > attempt to access beyond end of device 74 > sda6: rw=0, want=1044134458, limit=951401367 75 > Buffer I/O error on device sda6, logical block 522067228 76 > attempt to access beyond end of device 77 782. When INQUIRY with EVPD bit set issued to the MegaRAID controller, 79 system memory gets corrupted. 80 Root Cause: MegaRAID F/W handle the INQUIRY with EVPD bit set 81 incorrectly. 82 Fix: MegaRAID F/W has fixed the problem and being process of release, 83 soon. Meanwhile, driver will filter out the request. 84 853. One member in the data structure of the driver leads to unaligned 86 issue on 64-bit platform. 87 Customer reported "kernel unaligned access address" issue when 88 application communicates with MegaRAID HBA driver. 89 Root Cause: in uioc_t structure, one of member had misaligned and it 90 led system to display the error message. 91 Fix: A patch submitted to community from following folk. 92 93 > -----Original Message----- 94 > From: linux-scsi-owner@vger.kernel.org 95 > [mailto:linux-scsi-owner@vger.kernel.org] On Behalf Of Sakurai Hiroomi 96 > Sent: Wednesday, July 12, 2006 4:20 AM 97 > To: linux-scsi@vger.kernel.org; linux-kernel@vger.kernel.org 98 > Subject: Re: Help: strange messages from kernel on IA64 platform 99 > 100 > Hi, 101 > 102 > I saw same message. 103 > 104 > When GAM(Global Array Manager) is started, The following 105 > message output. 106 > kernel: kernel unaligned access to 0xe0000001fe1080d4, 107 > ip=0xa000000200053371 108 > 109 > The uioc structure used by ioctl is defined by packed, 110 > the allignment of each member are disturbed. 111 > In a 64 bit structure, the allignment of member doesn't fit 64 bit 112 > boundary. this causes this messages. 113 > In a 32 bit structure, we don't see the message because the allinment 114 > of member fit 32 bit boundary even if packed is specified. 115 > 116 > patch 117 > I Add 32 bit dummy member to fit 64 bit boundary. I tested. 118 > We confirmed this patch fix the problem by IA64 server. 119 > 120 > ************************************************************** 121 > **************** 122 > --- linux-2.6.9/drivers/scsi/megaraid/megaraid_ioctl.h.orig 123 > 2006-04-03 17:13:03.000000000 +0900 124 > +++ linux-2.6.9/drivers/scsi/megaraid/megaraid_ioctl.h 125 > 2006-04-03 17:14:09.000000000 +0900 126 > @@ -132,6 +132,10 @@ 127 > /* Driver Data: */ 128 > void __user * user_data; 129 > uint32_t user_data_len; 130 > + 131 > + /* 64bit alignment */ 132 > + uint32_t pad_0xBC; 133 > + 134 > mraid_passthru_t __user *user_pthru; 135 > 136 > mraid_passthru_t *pthru32; 137 > ************************************************************** 138 > **************** 139 140Release Date : Mon Apr 11 12:27:22 EST 2006 - Seokmann Ju <sju@lsil.com> 141Current Version : 2.20.4.8 (scsi module), 2.20.2.6 (cmm module) 142Older Version : 2.20.4.7 (scsi module), 2.20.2.6 (cmm module) 143 1441. Fixed a bug in megaraid_reset_handler(). 145 Customer reported "Unable to handle kernel NULL pointer dereference 146 at virtual address 00000000" when system goes to reset condition 147 for some reason. It happened randomly. 148 Root Cause: in the megaraid_reset_handler(), there is possibility not 149 returning pending packets in the pend_list if there are multiple 150 pending packets. 151 Fix: Made the change in the driver so that it will return all packets 152 in the pend_list. 153 1542. Added change request. 155 As found in the following URL, rmb() only didn't help the 156 problem. I had to increase the loop counter to 0xFFFFFF. (6 F's) 157 http://marc.theaimsgroup.com/?l=linux-scsi&m=110971060502497&w=2 158 159 I attached a patch for your reference, too. 160 Could you check and get this fix in your driver? 161 162 Best Regards, 163 Jun'ichi Nomura 164 165Release Date : Fri Nov 11 12:27:22 EST 2005 - Seokmann Ju <sju@lsil.com> 166Current Version : 2.20.4.7 (scsi module), 2.20.2.6 (cmm module) 167Older Version : 2.20.4.6 (scsi module), 2.20.2.6 (cmm module) 168 1691. Sorted out PCI IDs to remove megaraid support overlaps. 170 Based on the patch from Daniel, sorted out PCI IDs along with 171 character node name change from 'megadev' to 'megadev_legacy' to avoid 172 conflict. 173 --- 174 Hopefully we'll be getting the build restriction zapped much sooner, 175 but we should also be thinking about totally removing the hardware 176 support overlap in the megaraid drivers. 177 178 This patch pencils in a date of Feb 06 for this, and performs some 179 printk abuse in hope that existing legacy users might pick up on what's 180 going on. 181 182 Signed-off-by: Daniel Drake <dsd@gentoo.org> 183 --- 184 1852. Fixed a issue: megaraid always fails to reset handler. 186 --- 187 I found that the megaraid driver always fails to reset the 188 adapter with the following message: 189 megaraid: resetting the host... 190 megaraid mbox: reset sequence completed successfully 191 megaraid: fast sync command timed out 192 megaraid: reservation reset failed 193 when the "Cluster mode" of the adapter BIOS is enabled. 194 So, whenever the reset occurs, the adapter goes to 195 offline and just become unavailable. 196 197 Jun'ichi Nomura [mailto:jnomura@mtc.biglobe.ne.jp] 198 --- 199 200Release Date : Mon Mar 07 12:27:22 EST 2005 - Seokmann Ju <sju@lsil.com> 201Current Version : 2.20.4.6 (scsi module), 2.20.2.6 (cmm module) 202Older Version : 2.20.4.5 (scsi module), 2.20.2.5 (cmm module) 203 2041. Added IOCTL backward compatibility. 205 Convert megaraid_mm driver to new compat_ioctl entry points. 206 I don't have easy access to hardware, so only compile tested. 207 - Signed-off-by:Andi Kleen <ak@muc.de> 208 2092. megaraid_mbox fix: wrong order of arguments in memset() 210 That, BTW, shows why cross-builds are useful-the only indication of 211 problem had been a new warning showing up in sparse output on alpha 212 build (number of exceeding 256 got truncated). 213 - Signed-off-by: Al Viro 214 <viro@parcelfarce.linux.theplanet.co.uk> 215 2163. Convert pci_module_init to pci_register_driver 217 Convert from pci_module_init to pci_register_driver 218 (from:http://kernelnewbies.org/KernelJanitors/TODO) 219 - Signed-off-by: Domen Puncer <domen@coderock.org> 220 2214. Use the pre defined DMA mask constants from dma-mapping.h 222 Use the DMA_{64,32}BIT_MASK constants from dma-mapping.h when calling 223 pci_set_dma_mask() or pci_set_consistent_dma_mask(). See 224 http://marc.theaimsgroup.com/?t=108001993000001&r=1&w=2 for more 225 details. 226 Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch> 227 Signed-off-by: Domen Puncer <domen@coderock.org> 228 2295. Remove SSID checking for Dobson, Lindsay, and Verde based products. 230 Checking the SSVID/SSID for controllers which have Dobson, Lindsay, 231 and Verde is unnecessary because device ID has been assigned by LSI 232 and it is unique value. So, all controllers with these IOPs have to be 233 supported by the driver regardless SSVID/SSID. 234 2356. Date Thu, 27 Jan 2005 04:31:09 +0100 236 From Herbert Poetzl <> 237 Subject RFC: assert_spin_locked() for 2.6 238 239 Greetings! 240 241 overcautious programming will kill your kernel ;) 242 ever thought about checking a spin_lock or even 243 asserting that it must be held (maybe just for 244 spinlock debugging?) ... 245 246 there are several checks present in the kernel 247 where somebody does a variation on the following: 248 249 BUG_ON(!spin_is_locked(&some_lock)); 250 251 so what's wrong about that? nothing, unless you 252 compile the code with CONFIG_DEBUG_SPINLOCK but 253 without CONFIG_SMP ... in which case the BUG() 254 will kill your kernel ... 255 256 maybe it's not advised to make such assertions, 257 but here is a solution which works for me ... 258 (compile tested for sh, x86_64 and x86, boot/run 259 tested for x86 only) 260 261 best, 262 Herbert 263 264 - Herbert Poetzl <herbert@13thfloor.at>, Thu, 27 Jan 2005 265 266Release Date : Thu Feb 03 12:27:22 EST 2005 - Seokmann Ju <sju@lsil.com> 267Current Version : 2.20.4.5 (scsi module), 2.20.2.5 (cmm module) 268Older Version : 2.20.4.4 (scsi module), 2.20.2.4 (cmm module) 269 2701. Modified name of two attributes in scsi_host_template. 271 On Wed, 2005-02-02 at 10:56 -0500, Ju, Seokmann wrote: 272 > + .sdev_attrs = megaraid_device_attrs, 273 > + .shost_attrs = megaraid_class_device_attrs, 274 275 These are, perhaps, slightly confusing names. 276 The terms device and class_device have well defined meanings in the 277 generic device model, neither of which is what you mean here. 278 Why not simply megaraid_sdev_attrs and megaraid_shost_attrs? 279 280 Other than this, it looks fine to me too. 281 282Release Date : Thu Jan 27 00:01:03 EST 2005 - Atul Mukker <atulm@lsil.com> 283Current Version : 2.20.4.4 (scsi module), 2.20.2.5 (cmm module) 284Older Version : 2.20.4.3 (scsi module), 2.20.2.4 (cmm module) 285 2861. Bump up the version of scsi module due to its conflict. 287 288Release Date : Thu Jan 21 00:01:03 EST 2005 - Atul Mukker <atulm@lsil.com> 289Current Version : 2.20.4.3 (scsi module), 2.20.2.5 (cmm module) 290Older Version : 2.20.4.2 (scsi module), 2.20.2.4 (cmm module) 291 2921. Remove driver ioctl for logical drive to scsi address translation and 293 replace with the sysfs attribute. To remove drives and change 294 capacity, application shall now use the device attribute to get the 295 logical drive number for a scsi device. For adding newly created 296 logical drives, class device attribute would be required to uniquely 297 identify each controller. 298 - Atul Mukker <atulm@lsil.com> 299 300 "James, I've been thinking about this a little more, and you may be on 301 to something here. Let each driver add files as such:" 302 303 - Matt Domsch <Matt_Domsch@dell.com>, 12.15.2004 304 linux-scsi mailing list 305 306 307 "Then, if you simply publish your LD number as an extra parameter of 308 the device, you can look through /sys to find it." 309 310 - James Bottomley <James.Bottomley@SteelEye.com>, 01.03.2005 311 linux-scsi mailing list 312 313 314 "I don't see why not ... it's your driver, you can publish whatever 315 extra information you need as scsi_device attributes; that was one of 316 the designs of the extensible attribute system." 317 318 - James Bottomley <James.Bottomley@SteelEye.com>, 01.06.2005 319 linux-scsi mailing list 320 3212. Add AMI megaraid support - Brian King <brking@charter.net> 322 PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID3, 323 PCI_VENDOR_ID_AMI, PCI_SUBSYS_ID_PERC3_DC, 324 3253. Make some code static - Adrian Bunk <bunk@stusta.de> 326 Date: Mon, 15 Nov 2004 03:14:57 +0100 327 328 The patch below makes some needlessly global code static. 329 -wait_queue_head_t wait_q; 330 +static wait_queue_head_t wait_q; 331 332 Signed-off-by: Adrian Bunk <bunk@stusta.de> 333 3344. Added NEC ROMB support - NEC MegaRAID PCI Express ROMB controller 335 PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_MEGARAID_NEC_ROMB_2E, 336 PCI_SUBSYS_ID_NEC, PCI_SUBSYS_ID_MEGARAID_NEC_ROMB_2E, 337 3385. Fixed Tape drive issue : For any Direct CDB command to physical device 339 including tape, timeout value set by driver was 10 minutes. With this 340 value, most of command will return within timeout. However, for those 341 command like ERASE or FORMAT, it takes more than an hour depends on 342 capacity of the device and the command could be terminated before it 343 completes. 344 To address this issue, the 'timeout' field in the DCDB command will 345 have NO TIMEOUT (i.e., 4) value as its timeout on DCDB command. 346 347 348 349Release Date : Thu Dec 9 19:10:23 EST 2004 350 - Sreenivas Bagalkote <sreenib@lsil.com> 351 352Current Version : 2.20.4.2 (scsi module), 2.20.2.4 (cmm module) 353Older Version : 2.20.4.1 (scsi module), 2.20.2.3 (cmm module) 354 355i. Introduced driver ioctl that returns scsi address for a given ld. 356 357 "Why can't the existing sysfs interfaces be used to do this?" 358 - Brian King (brking@us.ibm.com) 359 360 "I've looked into solving this another way, but I cannot see how 361 to get this driver-private mapping of logical drive number-> HCTL 362 without putting code something like this into the driver." 363 364 "...and by providing a mapping a function to userspace, the driver 365 is free to change its mapping algorithm in the future if necessary .." 366 - Matt Domsch (Matt_Domsch@dell.com) 367 368Release Date : Thu Dec 9 19:02:14 EST 2004 - Sreenivas Bagalkote <sreenib@lsil.com> 369 370Current Version : 2.20.4.1 (scsi module), 2.20.2.3 (cmm module) 371Older Version : 2.20.4.1 (scsi module), 2.20.2.2 (cmm module) 372 373i. Fix a bug in kioc's dma buffer deallocation 374 375Release Date : Thu Nov 4 18:24:56 EST 2004 - Sreenivas Bagalkote <sreenib@lsil.com> 376 377Current Version : 2.20.4.1 (scsi module), 2.20.2.2 (cmm module) 378Older Version : 2.20.4.0 (scsi module), 2.20.2.1 (cmm module) 379 380i. Handle IOCTL cmd timeouts more properly. 381 382ii. pci_dma_sync_{sg,single}_for_cpu was introduced into megaraid_mbox 383 incorrectly (instead of _for_device). Changed to appropriate 384 pci_dma_sync_{sg,single}_for_device. 385 386Release Date : Wed Oct 06 11:15:29 EDT 2004 - Sreenivas Bagalkote <sreenib@lsil.com> 387Current Version : 2.20.4.0 (scsi module), 2.20.2.1 (cmm module) 388Older Version : 2.20.4.0 (scsi module), 2.20.2.0 (cmm module) 389 390i. Remove CONFIG_COMPAT around register_ioctl32_conversion 391 392Release Date : Mon Sep 27 22:15:07 EDT 2004 - Atul Mukker <atulm@lsil.com> 393Current Version : 2.20.4.0 (scsi module), 2.20.2.0 (cmm module) 394Older Version : 2.20.3.1 (scsi module), 2.20.2.0 (cmm module) 395 396i. Fix data corruption. Because of a typo in the driver, the IO packets 397 were wrongly shared by the ioctl path. This causes a whole IO command 398 to be replaced by an incoming ioctl command. 399 400Release Date : Tue Aug 24 09:43:35 EDT 2004 - Atul Mukker <atulm@lsil.com> 401Current Version : 2.20.3.1 (scsi module), 2.20.2.0 (cmm module) 402Older Version : 2.20.3.0 (scsi module), 2.20.2.0 (cmm module) 403 404i. Function reordering so that inline functions are defined before they 405 are actually used. It is now mandatory for GCC 3.4.1 (current stable) 406 407 Declare some heavy-weight functions to be non-inlined, 408 megaraid_mbox_build_cmd, megaraid_mbox_runpendq, 409 megaraid_mbox_prepare_pthru, megaraid_mbox_prepare_epthru, 410 megaraid_busywait_mbox 411 412 - Andrew Morton, 08.19.2004 413 linux-scsi mailing list 414 415 "Something else to clean up after inclusion: every instance of an 416 inline function is actually rendered as a full function call, because 417 the function is always used before it is defined. Atul, please 418 re-arrange the code to eliminate the need for most (all) of the 419 function prototypes at the top of each file, and define (not just 420 declare with a prototype) each inline function before its first use" 421 422 - Matt Domsch <Matt_Domsch@dell.com>, 07.27.2004 423 linux-scsi mailing list 424 425 426ii. Display elapsed time (countdown) while waiting for FW to boot. 427 428iii. Module compilation reorder in Makefile so that unresolved symbols do 429 not occur when driver is compiled non-modular. 430 431 Patrick J. LoPresti <patl@users.sourceforge.net>, 8.22.2004 432 linux-scsi mailing list 433 434 435Release Date : Thu Aug 19 09:58:33 EDT 2004 - Atul Mukker <atulm@lsil.com> 436Current Version : 2.20.3.0 (scsi module), 2.20.2.0 (cmm module) 437Older Version : 2.20.2.0 (scsi module), 2.20.1.0 (cmm module) 438 439i. When copying the mailbox packets, copy only first 14 bytes (for 32-bit 440 mailboxes) and only first 22 bytes (for 64-bit mailboxes). This is to 441 avoid getting the stale values for busy bit. We want to set the busy 442 bit just before issuing command to the FW. 443 444ii. In the reset handling, if the reset command is not owned by the 445 driver, do not (wrongly) print information for the "attached" driver 446 packet. 447 448iii. Have extended wait when issuing command in synchronous mode. This is 449 required for the cases where the option ROM is disabled and there is 450 no BIOS to start the controller. The FW starts to boot after receiving 451 the first command from the driver. The current driver has 1 second 452 timeout for the synchronous commands, which is far less than what is 453 actually required. We now wait up to MBOX_RESET_TIME (180 seconds) for 454 FW boot process. 455 456iv. In megaraid_mbox_product_info, clear the mailbox contents completely 457 before preparing the command for inquiry3. This is to ensure that the 458 FW does not get junk values in the command. 459 460v. Do away with the redundant LSI_CONFIG_COMPAT redefinition for 461 CONFIG_COMPAT. Replace <asm/ioctl32.h> with <linux/ioctl32.h> 462 463 - James Bottomley <James.Bottomley@SteelEye.com>, 08.17.2004 464 linux-scsi mailing list 465 466vi. Add support for 64-bit applications. Current drivers assume only 467 32-bit applications, even on 64-bit platforms. Use the "data" and 468 "buffer" fields of the mimd_t structure, instead of embedded 32-bit 469 addresses in application mailbox and passthru structures. 470 471vii. Move the function declarations for the management module from 472 megaraid_mm.h to megaraid_mm.c 473 474 - Andrew Morton, 08.19.2004 475 linux-scsi mailing list 476 477viii. Change default values for MEGARAID_NEWGEN, MEGARAID_MM, and 478 MEGARAID_MAILBOX to 'n' in Kconfig.megaraid 479 480 - Andrew Morton, 08.19.2004 481 linux-scsi mailing list 482 483ix. replace udelay with msleep 484 485x. Typos corrected in comments and whitespace adjustments, explicit 486 grouping of expressions. 487 488 489Release Date : Fri Jul 23 15:22:07 EDT 2004 - Atul Mukker <atulm@lsil.com> 490Current Version : 2.20.2.0 (scsi module), 2.20.1.0 (cmm module) 491Older Version : 2.20.1.0 (scsi module), 2.20.0.0 (cmm module) 492 493i. Add PCI ids for Acer ROMB 2E solution 494 495ii. Add PCI ids for I4 496 497iii. Typo corrected for subsys id for megaraid sata 300-4x 498 499iv. Remove yield() while mailbox handshake in synchronous commands 500 501 502 "My other main gripe is things like this: 503 504 + // wait for maximum 1 second for status to post 505 + for (i = 0; i < 40000; i++) { 506 + if (mbox->numstatus != 0xFF) break; 507 + udelay(25); yield(); 508 + } 509 510 which litter the driver. Use of yield() in drivers is deprecated." 511 512 - James Bottomley <James.Bottomley@SteelEye.com>, 07.14.2004 513 linux-scsi mailing list 514 515v. Remove redundant __megaraid_busywait_mbox routine 516 517vi. Fix bug in the management module, which causes a system lockup when the 518 IO module is loaded and then unloaded, followed by executing any 519 management utility. The current version of management module does not 520 handle the adapter unregister properly. 521 522 Specifically, it still keeps a reference to the unregistered 523 controllers. To avoid this, the static array adapters has been 524 replaced by a dynamic list, which gets updated every time an adapter 525 is added or removed. 526 527 Also, during unregistration of the IO module, the resources are 528 now released in the exact reverse order of the allocation time 529 sequence. 530 531 532Release Date : Fri Jun 25 18:58:43 EDT 2004 - Atul Mukker <atulm@lsil.com> 533Current Version : 2.20.1.0 534Older Version : megaraid 2.20.0.1 535 536i. Stale list pointer in adapter causes kernel panic when module 537 megaraid_mbox is unloaded 538 539 540Release Date : Thu Jun 24 20:37:11 EDT 2004 - Atul Mukker <atulm@lsil.com> 541Current Version : 2.20.0.1 542Older Version : megaraid 2.20.0.00 543 544i. Modules are not 'y' by default, but depend on current definition of 545 SCSI & PCI. 546 547ii. Redundant structure mraid_driver_t removed. 548 549iii. Miscellaneous indentation and goto/label fixes. 550 - Christoph Hellwig <hch@infradead.org>, 06.24.2004 linux-scsi 551 552iv. scsi_host_put(), do just before completing HBA shutdown. 553 554 555 556Release Date : Mon Jun 21 19:53:54 EDT 2004 - Atul Mukker <atulm@lsil.com> 557Current Version : 2.20.0.0 558Older Version : megaraid 2.20.0.rc2 and 2.00.3 559 560i. Independent module to interact with userland applications and 561 multiplex command to low level RAID module(s). 562 563 "Shared code in a third module, a "library module", is an acceptable 564 solution. modprobe automatically loads dependent modules, so users 565 running "modprobe driver1" or "modprobe driver2" would automatically 566 load the shared library module." 567 568 - Jeff Garzik <jgarzik@pobox.com> 02.25.2004 LKML 569 570 "As Jeff hinted, if your userspace<->driver API is consistent between 571 your new MPT-based RAID controllers and your existing megaraid driver, 572 then perhaps you need a single small helper module (lsiioctl or some 573 better name), loaded by both mptraid and megaraid automatically, which 574 handles registering the /dev/megaraid node dynamically. In this case, 575 both mptraid and megaraid would register with lsiioctl for each 576 adapter discovered, and lsiioctl would essentially be a switch, 577 redirecting userspace tool ioctls to the appropriate driver." 578 579 - Matt Domsch <Matt_Domsch@dell.com> 02.25.2004 LKML 580 581ii. Remove C99 initializations from pci_device id. 582 583 "pci_id_table_g would be much more readable when not using C99 584 initializers. 585 PCI table doesn't change, there's lots of users that prefer the more 586 readable variant. And it's really far less and much easier to grok 587 lines without C99 initializers." 588 589 - Christoph Hellwig <hch@infradead.org>, 05.28.2004 linux-scsi 590 591iii. Many fixes as suggested by Christoph Hellwig <hch@infradead.org> on 592 linux-scsi, 05.28.2004 593 594iv. We now support up to 32 parallel ioctl commands instead of current 1. 595 There is a conscious effort to let memory allocation not fail for ioctl 596 commands. 597 598v. Do away with internal memory management. Use pci_pool_(create|alloc) 599 instead. 600 601vi. Kill tasklet when unloading the driver. 602 603vii. Do not use "host_lock', driver has fine-grain locks now to protect all 604 data structures. 605 606viii. Optimize the build scatter-gather list routine. The callers already 607 know the data transfer address and length. 608 609ix. Better implementation of error handling and recovery. Driver now 610 performs extended errors recovery for instances like scsi cable pull. 611 612x. Disassociate the management commands with an overlaid scsi command. 613 Driver now treats the management packets as special packets and has a 614 dedicated callback routine. 615