Doug / smarc-fsl-linux-kernel

08 Apr, 2008

1 commit

  • 81e56ded8   [SCSI] aic94xx: cleanups ... Browse Code »

    - static functions in .c files shouldn't be marked inline
    - make needlessly global code static
    - remove the unused aic94xx_seq.c:asd_unpause_lseq()
    - #if 0 other unused code

    [akpm@linux-foundation.org: coding-style fixes]
    Signed-off-by: Adrian Bunk
    Signed-off-by: Andrew Morton
    Signed-off-by: James Bottomley

    Adrian Bunk
     

24 Feb, 2008

1 commit

  • e2396f1e4   [SCSI] aic94xx: fix TMF ascb handling to prevent sequencer panic ... Browse Code »

    This is a particularly nasty bug. The problem is that if any internal
    ascb times out, currently we free it even though it's pending at the
    sequencer. This results in the sequencer getting terminally confused
    and the error message:

    BUG:sequencer:dl:no ascb

    Being returned when it comes back. The way to fix this is to manage
    freeing the ascb from the tasklet completion routine, so that we only
    free it when the sequencer actually returns it. The code is also
    altered to use on stack completions and transfer variables.

    Signed-off-by: James Bottomley

    James Bottomley
     

12 Jan, 2008

1 commit

  • 1237c98db   [SCSI] aic94xx: update BIOS image from user space. ... Browse Code »

    1. Create a file "update_bios" in sysfs to allow user to update bios
    from user space.

    2. The BIOS image file can be downloaded from web site

    "http://www.adaptec.com/en-US/downloads/bios_fw/bios_fw_ver?productId=SAS-48300&dn=Adaptec+Serial+Attached+SCSI+48300"
    and copy the BIOS image into /lib/firmware folder.

    3. The aic994xx will accept "update bios_file" and "verify bios_file"
    commands to perform update and verify BIOS image .

    For example:

    Type "echo "update asc483c01.ufi" > /sys/devices/.../update_bios"
    to update BIOS image from /lib/firmware/as483c01.ufi file into
    HBA's flash memory.

    Type "echo "verify asc483c01.ufi" > /sys/devices/.../update_bios"
    to verify BIOS image between /lib/firmware/asc48c01.ufi file
    and
    HBA's flash memory.

    4. Type "cat /sys/devices/.../update_bios" to view the status or
    result
    of updating BIOS.

    Signed-off-by: Gilbert Wu
    Signed-off-by: James Bottomley

    Gilbert Wu
     

13 Oct, 2007

1 commit

09 Nov, 2006

1 commit

26 Oct, 2006

1 commit

05 Oct, 2006

1 commit

  • 7d12e780e   IRQ: Maintain regs pointer globally rather than passing to IRQ handlers ... Browse Code »

    Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
    of passing regs around manually through all ~1800 interrupt handlers in the
    Linux kernel.

    The regs pointer is used in few places, but it potentially costs both stack
    space and code to pass it around. On the FRV arch, removing the regs parameter
    from all the genirq function results in a 20% speed up of the IRQ exit path
    (ie: from leaving timer_interrupt() to leaving do_IRQ()).

    Where appropriate, an arch may override the generic storage facility and do
    something different with the variable. On FRV, for instance, the address is
    maintained in GR28 at all times inside the kernel as part of general exception
    handling.

    Having looked over the code, it appears that the parameter may be handed down
    through up to twenty or so layers of functions. Consider a USB character
    device attached to a USB hub, attached to a USB controller that posts its
    interrupts through a cascaded auxiliary interrupt controller. A character
    device driver may want to pass regs to the sysrq handler through the input
    layer which adds another few layers of parameter passing.

    I've build this code with allyesconfig for x86_64 and i386. I've runtested the
    main part of the code on FRV and i386, though I can't test most of the drivers.
    I've also done partial conversion for powerpc and MIPS - these at least compile
    with minimal configurations.

    This will affect all archs. Mostly the changes should be relatively easy.
    Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

    struct pt_regs *old_regs = set_irq_regs(regs);

    And put the old one back at the end:

    set_irq_regs(old_regs);

    Don't pass regs through to generic_handle_irq() or __do_IRQ().

    In timer_interrupt(), this sort of change will be necessary:

    - update_process_times(user_mode(regs));
    - profile_tick(CPU_PROFILING, regs);
    + update_process_times(user_mode(get_irq_regs()));
    + profile_tick(CPU_PROFILING);

    I'd like to move update_process_times()'s use of get_irq_regs() into itself,
    except that i386, alone of the archs, uses something other than user_mode().

    Some notes on the interrupt handling in the drivers:

    (*) input_dev() is now gone entirely. The regs pointer is no longer stored in
    the input_dev struct.

    (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
    something different depending on whether it's been supplied with a regs
    pointer or not.

    (*) Various IRQ handler function pointers have been moved to type
    irq_handler_t.

    Signed-Off-By: David Howells
    (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)

    David Howells
     

25 Sep, 2006

1 commit

29 Aug, 2006

1 commit

  • 2908d778a   [SCSI] aic94xx: new driver ... Browse Code »

    This is the end point of the separate aic94xx driver based on the
    original driver and transport class from Luben Tuikov

    The log of the separate development is:

    Alexis Bruemmer:
    o aic94xx: fix hotplug/unplug for expanderless systems
    o aic94xx: disable split completion timer/setting by default
    o aic94xx: wide port off expander support
    o aic94xx: remove various inline functions
    o aic94xx: use bitops
    o aic94xx: remove queue comment
    o aic94xx: remove sas_common.c
    o aic94xx: sas remove depot's
    o aic94xx: use available list_for_each_entry_safe_reverse()
    o aic94xx: sas header file merge

    James Bottomley:
    o aic94xx: fix TF_TMF_NO_CTX processing
    o aic94xx: convert to request_firmware interface
    o aic94xx: fix hotplug/unplug
    o aic94xx: add link error counts to the expander phys
    o aic94xx: add transport class phy reset capability
    o aic94xx: remove local_attached flag
    o Remove README
    o Fixup Makefile variable for libsas rename
    o Rename sas->libsas
    o aic94xx: correct return code for sas_discover_event
    o aic94xx: use parent backlink port
    o aic94xx: remove channel abstraction
    o aic94xx: fix routing algorithms
    o aic94xx: add backlink port
    o aic94xx: fix cascaded expander properties
    o aic94xx: fix sleep under lock
    o aic94xx: fix panic on module removal in complex topology
    o aic94xx: make use of the new sas_port
    o rename sas_port to asd_sas_port
    o Fix for eh_strategy_handler move
    o aic94xx: move entirely over to correct transport class formulation
    o remove last vestages of sas_rphy_alloc()
    o update for eh_timed_out move
    o Preliminary expander support for aic94xx
    o sas: remove event thread
    o minor warning cleanups
    o remove last vestiges of id mapping arrays
    o Further updates
    o Convert aic94xx over entirely to the transport class end device and
    o update aic94xx/sas to use the new sas transport class end device
    o [PATCH] aic94xx: attaching to the sas transport class
    o Add missing completion removal from prior patch
    o [PATCH] aic94xx: attaching to the sas transport class
    o Build fixes from akpm

    Jeff Garzik:
    o [scsi aic94xx] Remove ->owner from PCI info table

    Luben Tuikov:
    o initial aic94xx driver

    Mike Anderson:
    o aic94xx: fix panic on module insertion
    o aic94xx: stub out SATA_DEV case
    o aic94xx: compile warning cleanups
    o aic94xx: sas_alloc_task
    o aic94xx: ref count update
    o aic94xx nexus loss time value
    o [PATCH] aic94xx: driver assertion in non-x86 BIOS env

    Randy Dunlap:
    o libsas: externs not needed

    Robert Tarte:
    o aic94xx: sequence patch - fixes SATA support

    Signed-off-by: James Bottomley

    James Bottomley