Documentation/scsi/ChangeLog.megaraid_sas

   1
   2 1 Release Date    : Thur.July. 24 11:41:51 PST 2008 -
   3                        (emaild-id:megaraidlinux@lsi.com)
   4                        Sumant Patro
   5                        Bo Yang
   6
   7 2 Current Version : 00.00.04.01
   8 3 Older Version   : 00.00.03.22
   9
  10 1. Add the new controller (0078, 0079) support to the driver
  11        Those controllers are LSI's next generatation(gen2) SAS controllers.
  12
  13 1 Release Date    : Mon.June. 23 10:12:45 PST 2008 -
  14                        (emaild-id:megaraidlinux@lsi.com)
  15                        Sumant Patro
  16                        Bo Yang
  17
  18 2 Current Version : 00.00.03.22
  19 3 Older Version   : 00.00.03.20
  20
  21 1. Add shutdown DCMD cmd to the shutdown routine to make FW shutdown proper.
  22 2. Unexpected interrupt occurs in HWR Linux driver, add the dumy readl pci flush will fix this issue.
  23
  24 1 Release Date    : Mon. March 10 11:02:31 PDT 2008 -
  25                         (emaild-id:megaraidlinux@lsi.com)
  26                         Sumant Patro
  27                         Bo Yang
  28
  29 2 Current Version : 00.00.03.20-RC1
  30 3 Older Version   : 00.00.03.16
  31
  32 1. Rollback the sense info implementation
  33         Sense buffer ptr data type in the ioctl path is reverted back
  34         to u32 * as in previous versions of driver.
  35
  36 2. Fixed the driver frame count.
  37         When Driver sent wrong frame count to firmware.  As this
  38         particular command is sent to drive, FW is seeing continuous
  39         chip resets and so the command will timeout.
  40
  41 3. Add the new controller(1078DE) support to the driver
  42         and Increase the max_wait to 60 from 10 in the controller
  43         operational status.  With this max_wait increase, driver will
  44         make sure the FW will   finish the pending cmd for KDUMP case.
  45
  46 1 Release Date    : Thur. Nov. 07 16:30:43 PST 2007 -
  47                         (emaild-id:megaraidlinux@lsi.com)
  48                         Sumant Patro
  49                         Bo Yang
  50
  51 2 Current Version : 00.00.03.16
  52 3 Older Version   : 00.00.03.15
  53
  54 1. Increased MFI_POLL_TIMEOUT_SECS to 60 seconds from 10. FW may take
  55         a max of 60 seconds to respond to the INIT cmd.
  56
  57 1 Release Date    : Fri. Sep. 07 16:30:43 PST 2007 -
  58                         (emaild-id:megaraidlinux@lsi.com)
  59                         Sumant Patro
  60                         Bo Yang
  61
  62 2 Current Version : 00.00.03.15
  63 3 Older Version   : 00.00.03.14
  64
  65 1. Added module parameter "poll_mode_io" to support for "polling"
  66         (reduced interrupt operation).  In this mode, IO completion
  67         interrupts are delayed. At the end of initiating IOs, the
  68         driver schedules for cmd completion if there are pending cmds
  69         to be completed.  A timer-based interrupt has also been added
  70         to prevent IO completion processing from being delayed
  71         indefinitely in the case that no new IOs are initiated.
  72
  73 1 Release Date    : Fri. Sep. 07 16:30:43 PST 2007 -
  74                         (emaild-id:megaraidlinux@lsi.com)
  75                         Sumant Patro
  76                         Bo Yang
  77
  78 2 Current Version : 00.00.03.14
  79 3 Older Version   : 00.00.03.13
  80
  81 1. Setting the max_sectors_per_req based on max SGL supported by the
  82         FW. Prior versions calculated this value from controller info
  83         (max_sectors_1, max_sectors_2). For certain controllers/FW,
  84         this was resulting in a value greater than max SGL supported
  85         by the FW. Issue was first reported by users running LUKS+XFS
  86         with megaraid_sas.  Thanks to RB for providing the logs and
  87         duplication steps that helped to get to the root cause of the
  88         issue.  2. Increased MFI_POLL_TIMEOUT_SECS to 60 seconds from
  89         10. FW may take a max of 60 seconds to respond to the INIT
  90         cmd.
  91
  92 1 Release Date    : Fri. June. 15 16:30:43 PST 2007 -
  93                         (emaild-id:megaraidlinux@lsi.com)
  94                         Sumant Patro
  95                         Bo Yang
  96
  97 2 Current Version : 00.00.03.13
  98 3 Older Version   : 00.00.03.12
  99
 100 1. Added the megasas_reset_timer routine to intercept cmd timeout and throttle io.
 101
 102 On Fri, 2007-03-16 at 16:44 -0600, James Bottomley wrote:
 103 It looks like megaraid_sas at least needs this to throttle its commands
 104 > as they begin to time out.  The code keeps the existing transport
 105 > template use of eh_timed_out (and allows the transport to override the
 106 > host if they both have this callback).
 107 >
 108 > James
 109
 110 1 Release Date    : Sat May. 12 16:30:43 PST 2007 -
 111                         (emaild-id:megaraidlinux@lsi.com)
 112                         Sumant Patro
 113                         Bo Yang
 114
 115 2 Current Version : 00.00.03.12
 116 3 Older Version   : 00.00.03.11
 117
 118 1.  When MegaSAS driver receives reset call from OS, driver waits in reset
 119 routine for max 3 minutes for all pending command completion. Now driver will
 120 call completion routine every 5 seconds from the reset routine instead of
 121 waiting for depending on cmd completion from isr path.
 122
 123 1 Release Date    : Mon Apr. 30 10:25:52 PST 2007 -
 124                         (emaild-id:megaraidlinux@lsi.com)
 125                         Sumant Patro
 126                         Bo Yang
 127
 128 2 Current Version : 00.00.03.11
 129 3 Older Version   : 00.00.03.09
 130
 131         1. Memory Manager for IOCTL removed for 2.6 kernels.
 132            pci_alloc_consistent replaced by dma_alloc_coherent. With this
 133            change there is no need of memory manager in the driver code
 134
 135         On Wed, 2007-02-07 at 13:30 -0800, Andrew Morton wrote:
 136         > I suspect all this horror is due to stupidity in the DMA API.
 137         >
 138         > pci_alloc_consistent() just goes and assumes GFP_ATOMIC, whereas
 139         > the caller (megasas_mgmt_fw_ioctl) would have been perfectly happy
 140         > to use GFP_KERNEL.
 141         >
 142         > I bet this fixes it
 143
 144         It does, but the DMA API was expanded to cope with this exact case, so
 145         use dma_alloc_coherent() directly in the megaraid code instead.  The dev
 146         is just &pci_dev->dev.
 147
 148         James <James.Bottomley@SteelEye.com>
 149
 150         3. SYNCHRONIZE_CACHE is not supported by FW and thus blocked by driver.
 151         4. Hibernation support added
 152         5. Performing diskdump while running IO in RHEL 4 was failing. Fixed.
 153
 154 1 Release Date    : Fri Feb. 09 14:36:28 PST 2007 -
 155                         (emaild-id:megaraidlinux@lsi.com)
 156                         Sumant Patro
 157                         Bo Yang
 158
 159 2 Current Version : 00.00.03.09
 160 3 Older Version   : 00.00.03.08
 161
 162 i.      Under heavy IO mid-layer prints "DRIVER_TIMEOUT" errors
 163
 164         The driver now waits for 10 seconds to elapse instead of 5 (as in
 165         previous release) to resume IO.
 166
 167 1 Release Date    : Mon Feb. 05 11:35:24 PST 2007 -
 168                         (emaild-id:megaraidlinux@lsi.com)
 169                         Sumant Patro
 170                         Bo Yang
 171 2 Current Version : 00.00.03.08
 172 3 Older Version   : 00.00.03.07
 173
 174 i.      Under heavy IO mid-layer prints "DRIVER_TIMEOUT" errors
 175
 176         Fix:    The driver is now throttling IO.
 177         Checks added in megasas_queue_command to know if FW is able to
 178         process commands within timeout period. If number of retries
 179         is 2 or greater,the driver stops sending cmd to FW temporarily. IO is
 180         resumed if pending cmd count reduces to 16 or 5 seconds has elapsed
 181         from the time cmds were last sent to FW.
 182
 183 ii.     FW enables WCE bit in Mode Sense cmd for drives that are configured
 184         as WriteBack. The OS may send "SYNCHRONIZE_CACHE" cmd when Logical
 185         Disks are exposed with WCE=1. User is advised to enable Write Back
 186         mode only when the controller has battery backup. At this time
 187         Synhronize cache is not supported by the FW. Driver will short-cycle
 188         the cmd and return sucess without sending down to FW.
 189
 190 1 Release Date    : Sun Jan. 14 11:21:32 PDT 2007 -
 191                  Sumant Patro <Sumant.Patro@lsil.com>/Bo Yang
 192 2 Current Version : 00.00.03.07
 193 3 Older Version   : 00.00.03.06
 194
 195 i.      bios_param entry added in scsi_host_template that returns disk geometry
 196         information.
 197
 198 1 Release Date    : Fri Oct 20 11:21:32 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>/Bo Yang
 199 2 Current Version : 00.00.03.06
 200 3 Older Version   : 00.00.03.05
 201
 202 1. Added new memory management module to support the IOCTL memory allocation. For IOCTL we try to allocate from the memory pool created during driver initialization. If mem pool is empty then we allocate at run time.
 203 2. Added check in megasas_queue_command and dpc/isr routine to see if we have already declared adapter dead
 204    (hw_crit_error=1). If hw_crit_error==1, now we donot accept any processing of pending cmds/accept any cmd from OS
 205
 206 1 Release Date    : Mon Oct 02 11:21:32 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
 207 2 Current Version : 00.00.03.05
 208 3 Older Version   : 00.00.03.04
 209
 210 i.      PCI_DEVICE macro used
 211
 212         Convert the pci_device_id-table of the megaraid_sas-driver to the PCI_DEVICE-macro, to safe some lines.
 213
 214                 - Henrik Kretzschmar <henne@nachtwindheim.de>
 215 ii.     All compiler warnings removed
 216 iii.    megasas_ctrl_info struct reverted to 3.02 release
 217 iv.     Default value of megasas_dbg_lvl set to 0
 218 v.      Removing in megasas_exit the sysfs entry created for megasas_dbg_lvl
 219 vi.     In megasas_teardown_frame_pool(), cmd->frame was passed instead of
 220         cmd->sense to pci_pool_free. Fixed. Bug was pointed out by
 221         Eric Sesterhenn
 222
 223 1 Release Date    : Wed Sep 13 14:22:51 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
 224 2 Current Version : 00.00.03.04
 225 3 Older Version   : 00.00.03.03
 226
 227 i.      Added Reboot notify
 228 ii.     Reduced by 1 max cmds sent to FW from Driver to make the reply_q_sz same
 229         as Max Cmds FW can support
 230
 231 1 Release Date    : Tue Aug 22 16:33:14 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
 232 2 Current Version : 00.00.03.03
 233 3 Older Version   : 00.00.03.02
 234
 235 i.      Send stop adapter to FW & Dump pending FW cmds before declaring adapter dead.
 236         New varible added to set dbg level.
 237 ii.     Disable interrupt made as fn pointer as they are different for 1068 / 1078
 238 iii.    Frame count optimization. Main frame can contain 2 SGE for 64 bit SGLs and
 239         3 SGE for 32 bit SGL
 240 iv.     Tasklet added for cmd completion
 241 v.      If FW in operational state before firing INIT, now we send RESET Flag to FW instead of just READY. This is used to do soft reset.
 242 vi.     megasas_ctrl_prop structure updated (based on FW struct)
 243 vii.    Added print : FW now in Ready State during initialization
 244
 245 1 Release Date    : Sun Aug 06 22:49:52 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
 246 2 Current Version : 00.00.03.02
 247 3 Older Version   : 00.00.03.01
 248
 249 i.      Added FW tranistion state for Hotplug scenario
 250
 251 1 Release Date    : Sun May 14 22:49:52 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
 252 2 Current Version : 00.00.03.01
 253 3 Older Version   : 00.00.02.04
 254
 255 i.      Added support for ZCR controller.
 256
 257                 New device id 0x413 added.
 258
 259 ii.     Bug fix : Disable controller interrupt before firing INIT cmd to FW.
 260
 261                 Interrupt is enabled after required initialization is over.
 262                 This is done to ensure that driver is ready to handle interrupts when
 263                 it is generated by the controller.
 264
 265                 -Sumant Patro <Sumant.Patro@lsil.com>
 266
 267 1 Release Date    : Wed Feb 03 14:31:44 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
 268 2 Current Version : 00.00.02.04
 269 3 Older Version   : 00.00.02.04
 270
 271 i.      Remove superflous instance_lock
 272
 273         gets rid of the otherwise superflous instance_lock and avoids an unsave
 274         unsynchronized access in the error handler.
 275
 276                 - Christoph Hellwig <hch@lst.de>
 277
 278
 279 1 Release Date    : Wed Feb 03 14:31:44 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
 280 2 Current Version : 00.00.02.04
 281 3 Older Version   : 00.00.02.04
 282
 283 i.      Support for 1078 type (ppc IOP) controller, device id : 0x60 added.
 284         During initialization, depending on the device id, the template members
 285         are initialized with function pointers specific to the ppc or
 286         xscale controllers.
 287
 288                 -Sumant Patro <Sumant.Patro@lsil.com>
 289
 290 1 Release Date    : Fri Feb 03 14:16:25 PST 2006 - Sumant Patro
 291                                                         <Sumant.Patro@lsil.com>
 292 2 Current Version : 00.00.02.04
 293 3 Older Version   : 00.00.02.02
 294 i.      Register 16 byte CDB capability with scsi midlayer
 295
 296         "Ths patch properly registers the 16 byte command length capability of the
 297         megaraid_sas controlled hardware with the scsi midlayer. All megaraid_sas
 298         hardware supports 16 byte CDB's."
 299
 300                 -Joshua Giles <joshua_giles@dell.com>
 301
 302 1 Release Date    : Mon Jan 23 14:09:01 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
 303 2 Current Version : 00.00.02.02
 304 3 Older Version   : 00.00.02.01
 305
 306 i.      New template defined to represent each family of controllers (identified by processor used).
 307         The template will have defintions that will be initialised to appropritae values for a specific family of controllers. The template definition has four function pointers. During driver initialisation the function pointers will be set based on the controller family type. This change is done to support new controllers that has different processors and thus different register set.
 308
 309                 -Sumant Patro <Sumant.Patro@lsil.com>
 310
 311 1 Release Date    : Mon Dec 19 14:36:26 PST 2005 - Sumant Patro <Sumant.Patro@lsil.com>
 312 2 Current Version : 00.00.02.00-rc4
 313 3 Older Version   : 00.00.02.01
 314
 315 i.      Code reorganized to remove code duplication in megasas_build_cmd.
 316
 317         "There's a lot of duplicate code megasas_build_cmd.  Move that out of the different codepathes and merge the reminder of megasas_build_cmd into megasas_queue_command"
 318
 319                 - Christoph Hellwig <hch@lst.de>
 320
 321 ii.     Defined MEGASAS_IOC_FIRMWARE32 for code paths that handles 32 bit applications in 64 bit systems.
 322
 323         "MEGASAS_IOC_FIRMWARE can't be redefined if CONFIG_COMPAT is set, we need to define a MEGASAS_IOC_FIRMWARE32 define so native binaries continue to work"
 324
 325                 - Christoph Hellwig <hch@lst.de>