Properly handling of target reset in multi-initiator environment

Clean up in broadcast change handling:
(1) Need to look at the status of each task management request, and retry
    the TM when there are failures.
(2) Need quiescence IO so the driver doesn't take on more IO request while
    it's in the middle of sending TM  request to firmware
(3)  Add support to keep track of how many pending broadcast AEN events
     are received while the broadcast handling is active, then loop back at
     the end of this routine if there were any events received.

Clean up in mpt2sas_scsih_issue_tm routine:
(1) Make sure proper status is returned when host reset fails
(2) Clean up sanity checks near end of routine, insuring all outstanding
    IOs were completed.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

This feature is to override the default
max_sectors setting at load time, taking max_sectors as an
command line option when loading the driver.  The setting is
currently hard-coded in the driver to 8192 sectors (4MB transfers).
If max_sectors is specified at load time, minimum specified
setting will be 64, and the maximum is 8192.  The driver will
modify the setting to be on even boundary. If max_sectors is not
specified, the driver will default to 8192.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

mpt2sas driver revision q header update:

(1) Modified the descriptions of the LocalAddress bit in the
    Flags field of the MPI SGE Format description and the MPI
    Simple Element.
(2) Modified Data Location Address Space bits in the Flags field
    of the IEEE Chain Element.
(3) Added more detail to the description of the DataLength field
    for the SCSI IO Request and Target Assist Request. Removed
    restriction on using chained SGLs when using multicast or
    bidirectional support.
(4) In Manufacturing Page 7, added ReceptacleID field to
    ConnectorInfo, and reworked how the Pinout field is used.
(5) In IO Unit Page 7, added BoardTemperature and
    BoardTemperatureUnits fields.
(6) In IOC Page 1, changed CoalescingTimeout to units of
    half-microsecond and updated descriptions.
(7) Modified descriptions of SATASlumberTimeout and
    SASSlumberTimeout fields in SAS IO Unit Page 5 to indicate
    the timers start after partial mode is entered.
(8) Added Extended Manufacturing configuration pages.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

This patch addresses many endian issues solved by runing sparse with the
option __CHECK_ENDIAN__ turned on.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Signed-off-by: Abhijeet Joglekar <abjoglek@cisco.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Driver was incorrectly using the SLAB_CACHE_DMA flag when creating a cache
for SGLs. fnic device does not have 24-bit DMA restrictions. Remove the flag
and allocations from ZONE_DMA.

Thanks to Roland Dreier and David Rientjes for pointing out the bug.
Signed-off-by: Abhijeet Joglekar <abjoglek@cisco.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

- Added BSG interface support to BFA driver
- Adds support to send ELS/CT FC passthru commands and
  few vendor specific BSG requests.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

- Moved FCS initialization, which internally does the im_port creation
  as well as the scsi_host creation before bfa_init.

Once the bfa_init is complete & successful:
- Reset the FCS base port cfg params such as pwwn/nwwn and setup fc host
  params - based on the values learned during the ioc getattr request.
- Change needed to support BSG commands even on bfa init failure.
- Model description fixes for Brocade adapters.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

- Enhancements to FCPIM module.
- Introduced IO tag management to allocate/release IOs to FCPIM module
  from a free IOtag pool.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

- Introduce FC credit recovery.
- Added module parameter to enable/disable credit recovery.

Bug Fixes:
- Removed check for ignoring plogi from initiator in switched fabric mode.
- The ABTS for PLOGI is going out few millisecs earlier due to FW
  timer calibration (around 300 miilisecs earlier). So there is a
  window if an accept comes during this time HBA would have initiated
  an ABORT.
- Added 1 to FC_ELS_TOV for compensating for FW timer.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

- Added support for 16Gbps.
- Added logic to flush pending mailbox command queue when IOC is disabled.
- Fix to Halt the flash controller during fw initialization - since
  when asic blck is programmed flash controller's continuous access
  blocks f/w access to flash.
- Added new asic based card types and modified IOC get card model routine.
- Added PLL init fix to do LPU reset every time we do a memory
  initialization, since not doing so will cause LPU to be
  uninitialized during driver load.
- Added fix to Halt flash controller before PLL initialization.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

- Introduced IOC poll mechanism which replaces current interrupt
  based FW READY method.
- The timer based poll routine in IOC will query the ioc_fwstate
  register to see if there is a state change in FW, and sends the READY event.
- Bug fixes in the new asic PLL initialization.
- Added logic to handle CPE/RME queue interrupts before iocfc config done.
  1. Use the queue_process flag to see if iocfc configuration is done
     in INTX mode.
  2. Split the MSIX handler installation in two - one for IOC intr
     handler and the other for cpe/rme queue handler - and delay
     assigning queue handlers until iocfc config is done in MSIX mode.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Made changes to FCS lport, vport state machines to support vport
enable / disable operations.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

- Added support for Brocade-1860 Fabric Adapter.
- Made changes to support single firmware image per asic type.
- Combined bfi_cbreg.h and bfi_ctreg.h defines into bfi_reg.h with
  only minimal defines used by host.
- Added changes to setup CPE/RME Queue register offsets based on
  firmware response.
- Removed queue register offset initializations and added register offsets
  to BFI config response message.
- Added Brocade-1860 asic specific interrupt status definitions and
  mailbox interfaces.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

- Add PBC port Disabled condition check.
- Rename incorrectly named LPS I2H messages.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Introduced a generic event notification callback function that
receives IOC_ENABLED, IOC_DISABLED, IOC_FAILED events and notifies the
modules registered for these events.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

- Avoid the use of hardware defined structure bfi_sge_s for DMA
  requests in host.

- Defined a generic address len pair to represent a DMA memory chunk
  (bfi_alen_s).
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

This fixes:

drivers/scsi/sun3_NCR5380.c:475: warning: ‘merge_contiguous_buffers’ defined but not used
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Sam Creasey <sammy@sammy.net>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

This fixes a.o.:

drivers/scsi/sun3_scsi.h:225:5: warning: "NDEBUG" is not defined
drivers/scsi/sun3_scsi.h:345:14: warning: "NDEBUG_ABORT" is not defined
drivers/scsi/sun3_scsi.h:351:14: warning: "NDEBUG_TAGS" is not defined
drivers/scsi/sun3_scsi.h:357:14: warning: "NDEBUG_MERGING" is not defined
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

This fixes:

drivers/scsi/sun3_NCR5380.c:1448:5: warning: "NCR_TIMEOUT" is not defined
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

and call it from sun3scsi_release(), cfr. the other NCR5380 drivers.

This fixes:

drivers/scsi/NCR5380.h:303: warning: ‘NCR5380_exit’ declared ‘static’ but never defined
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

WARNING: vmlinux.o(.text+0x18545c): Section mismatch in reference from the function sun3scsi_detect() to the function .init.text:NCR5380_print_options()
WARNING: vmlinux.o(.text+0x18556c): Section mismatch in reference from the function sun3scsi_detect() to the function .init.text:NCR5380_print_options()
WARNING: vmlinux.o(.text+0x187692): Section mismatch in reference from the function sun3scsi_detect() to the function .init.text:NCR5380_print_options()
WARNING: vmlinux.o(.text+0x187770): Section mismatch in reference from the function sun3scsi_detect() to the function .init.text:NCR5380_print_options()
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

This fixes:

drivers/scsi/mac_scsi.c:220:5: warning: "NDEBUG_ABORT" is not defined
drivers/scsi/mac_scsi.c:271:5: warning: "NDEBUG_ABORT" is not defined
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

WARNING: vmlinux.o(.text+0x1ecd3e): Section mismatch in reference from the function macscsi_detect() to the function .devinit.text:NCR5380_init()
WARNING: vmlinux.o(.text+0x1ecddc): Section mismatch in reference from the function macscsi_detect() to the function .init.text:NCR5380_print_options()
WARNING: vmlinux.o(.text+0x1ece60): Section mismatch in reference from the function macscsi_detect() to the function .init.text:NCR5380_print_options()
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

and call it from atari_scsi_release(), cfr. the other NCR5380 drivers.

This fixes:

drivers/scsi/NCR5380.h:303: warning: ‘NCR5380_exit’ declared ‘static’ but never defined
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Add ISA PNP IDs of the following cards to aha152x driver:
AVA-1502
AVA-1505
AHA-1510
AVA-1515
AHA-1520
AHA-1522
AHA-1530
AHA-1532
AIC-6360
(list from SCSI.INF file)

This makes my AHA-1530P card (has ADP3015 ID) work automatically.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

This patch resulted from the discussion at
https://bugzilla.novell.com/show_bug.cgi?id=679277,
https://bugzilla.novell.com/show_bug.cgi?id=681840 .
Signed-off-by: Werner Fink <werner@novell.com>
Signed-off-by: Ankit Jain <jankit@suse.de>
Cc: stable@kernel.org
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Noticed that when the sysfs interface of the SCSI SES
driver was used to request a fault indication the LED
flashed but the buzzer didn't sound. So it was doing
what REQUEST IDENT (locate) should do.

Changelog:
   - fix the setting of REQUEST FAULT for the device slot
     and array device slot elements in the enclosure control
     diagnostic page
   - note the potentially defective code that reads the
     FAULT SENSED and FAULT REQUESTED bits from the enclosure
     status diagnostic page

The attached patch is against git/scsi-misc-2.6
Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Cc: stable@kernel.org
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

commit 8ce7955a ("[SCSI] atari_NCR5380:
update_timeout removal") removed all users, but not the avtual variable.
Suggested-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Using the current NEXT() macro for both lvalues and rvalues gives:

In file included from drivers/scsi/sun3_scsi.c:623:
drivers/scsi/sun3_NCR5380.c: In function ‘NCR5380_queue_command_lck’:
drivers/scsi/sun3_NCR5380.c:993: warning: assignment discards qualifiers from pointer target type
drivers/scsi/sun3_NCR5380.c: In function ‘NCR5380_main’:
drivers/scsi/sun3_NCR5380.c:1147: warning: assignment discards qualifiers from pointer target type
drivers/scsi/sun3_NCR5380.c: In function ‘NCR5380_information_transfer’:
drivers/scsi/sun3_NCR5380.c:2277: warning: assignment discards qualifiers from pointer target type
drivers/scsi/sun3_NCR5380.c:2333: warning: assignment discards qualifiers from pointer target type

Change NEXT() to operate on rvalues only(), and introduce SET_NEXT() to
operate on lvalues, as is done in drivers/scsi/atari_NCR5380.c.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Deleting NPIV port causes a kernel panic when the NPIV port is in the same zone
as the physical port and shares the same LUN. This happens due to the fact that
vport destroy and unsolicited ELS are scheduled to run on the same workqueue,
and vport destroy destroys the lport and the unsolicited ELS tries to access
the invalid lport.  This patch fixes this issue by maintaining a list of valid
lports and verifying if the lport is valid or not before accessing it.
Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Do not set io_req->sc_cmd to NULL until bnx2fc_unmap_sg_list() is called to
enable it to unmap the DMA mappings.
Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

NIC partitioned interfaces reports the speed of 2500 which was not handled by
the driver.
Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Enabling DEBUG_STRICT_USER_COPY_CHECKS causes the following
warning:

In file included from arch/x86/include/asm/uaccess.h:573,
                 from include/linux/uaccess.h:5,
                 from include/linux/highmem.h:7,
                 from include/linux/pagemap.h:10,
                 from include/linux/blkdev.h:12,
                 from drivers/scsi/lpfc/lpfc_debugfs.c:21:
In function 'copy_from_user':
arch/x86/include/asm/uaccess_64.h:65:
warning: call to 'copy_from_user_overflow' declared with
attribute warning: copy_from_user() buffer size is not provably
correct

presumably due to buf_size being signed causing GCC to fail to
see that buf_size can't become negative.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/keithp/linux-2.6:
  drm/i915: Use chipset-specific irq installers
  drm/i915: forcewake fix after reset
  drm/i915: add Ivy Bridge page flip support
  drm/i915: split page flip queueing into per-chipset functions

Merge branch 'driver-core-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6

* 'driver-core-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
  Connector: Correctly set the error code in case of success when dispatching receive callbacks
  Connector: Set the CN_NETLINK_USERS correctly
  pti: PTI semantics fix in pti_tty_cleanup.
  pti: ENXIO error case memory leak PTI fix.
  pti: double-free security PTI fix
  drivers:misc: ti-st: fix skipping of change remote baud
  drivers/base/platform.c: don't mark platform_device_register_resndata() as __init_or_module
  st_kim: Handle case of no device found for ID 0
  firmware: fix GOOGLE_SMI kconfig dependency warning

* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  MAINTAINERS: add myself as maintainer of USB/IP
  usb: r8a66597-hcd: fix cannot detect low/full speed device
  USB: ehci-ath79: fix a NULL pointer dereference
  USB: Add new FT232H chip to drivers/usb/serial/ftdi_sio.c
  usb/isp1760: Fix bug preventing the unlinking of control urbs
  USB: Fix up URB error codes to reflect implementation.
  xhci: Always set urb->status to zero for isoc endpoints.
  xhci: Add reset on resume quirk for asrock p67 host
  xHCI 1.0: Incompatible Device Error
  USB: don't let errors prevent system sleep
  USB: don't let the hub driver prevent system sleep
  USB: change maintainership of ohci-hcd and ehci-hcd
  xHCI 1.0: Force Stopped Event(FSE)
  xhci: Don't warn about zeroed bMaxBurst descriptor field.
  USB: Free bandwidth when usb_disable_device is called.
  xhci: Reject double add of active endpoints.
  USB: TI 3410/5052 USB Serial Driver: Fix mem leak when firmware is too big.
  usb: musb: gadget: clear TXPKTRDY flag when set FLUSHFIFO
  usb: musb: host: compare status for negative error values