21 Jun, 2008

2 commits

  • Addition of Transcend 1GB 45x id so that it is properly detected.

    [bart: fix typo in ide-cs's ID spotted by Alan Cox]

    Signed-off-by: William Peters
    Signed-off-by: Kristoffer Ericson
    CC: Alan Cox
    CC: linux-ide@vger.kernel.org
    Signed-off-by: Dominik Brodowski
    Signed-off-by: Bartlomiej Zolnierkiewicz

    Kristoffer Ericson
     
  • Add an id for:

    product info: "M-Systems", "CF300", ""
    manfid: 0x000a, 0x0000
    function: 4 (fixed disk)

    Signed-off-by: Matt Reimer
    CC: Alan Cox
    CC: linux-ide@vger.kernel.org
    Signed-off-by: Dominik Brodowski
    Signed-off-by: Bartlomiej Zolnierkiewicz

    Matt Reimer
     

18 Apr, 2008

5 commits

  • Add sff_ prefix to SFF specific port ops.

    This rename is in preparation of separating SFF support out of libata
    core layer. This patch strictly renames ops and doesn't introduce any
    behavior difference.

    Signed-off-by: Tejun Heo

    Tejun Heo
     
  • SFF functions have confusing names. Some have sff prefix, some have
    bmdma, some std, some pci and some none. Unify the naming by...

    * SFF functions which are common to both BMDMA and non-BMDMA are
    prefixed with ata_sff_.

    * SFF functions which are specific to BMDMA are prefixed with
    ata_bmdma_.

    * SFF functions which are specific to PCI but apply to both BMDMA and
    non-BMDMA are prefixed with ata_pci_sff_.

    * SFF functions which are specific to PCI and BMDMA are prefixed with
    ata_pci_bmdma_.

    * Drop generic prefixes from LLD specific routines. For example,
    bfin_std_dev_select -> bfin_dev_select.

    The following renames are noteworthy.

    ata_qc_issue_prot() -> ata_sff_qc_issue()
    ata_pci_default_filter() -> ata_bmdma_mode_filter()
    ata_dev_try_classify() -> ata_sff_dev_classify()

    This rename is in preparation of separating SFF support out of libata
    core layer. This patch strictly renames functions and doesn't
    introduce any behavior difference.

    Signed-off-by: Tejun Heo

    Tejun Heo
     
  • libata lets low level drivers build ata_port_operations table and
    register it with libata core layer. This allows low level drivers
    high level of flexibility but also burdens them with lots of
    boilerplate entries.

    This becomes worse for drivers which support related similar
    controllers which differ slightly. They share most of the operations
    except for a few. However, the driver still needs to list all
    operations for each variant. This results in large number of
    duplicate entries, which is not only inefficient but also error-prone
    as it becomes very difficult to tell what the actual differences are.

    This duplicate boilerplates all over the low level drivers also make
    updating the core layer exteremely difficult and error-prone. When
    compounded with multi-branched development model, it ends up
    accumulating inconsistencies over time. Some of those inconsistencies
    cause immediate problems and fixed. Others just remain there dormant
    making maintenance increasingly difficult.

    To rectify the problem, this patch implements ata_port_operations
    inheritance. To allow LLDs to easily re-use their own ops tables
    overriding only specific methods, this patch implements poor man's
    class inheritance. An ops table has ->inherits field which can be set
    to any ops table as long as it doesn't create a loop. When the host
    is started, the inheritance chain is followed and any operation which
    isn't specified is taken from the nearest ancestor which has it
    specified. This operation is called finalization and done only once
    per an ops table and the LLD doesn't have to do anything special about
    it other than making the ops table non-const such that libata can
    update it.

    libata provides four base ops tables lower drivers can inherit from -
    base, sata, pmp, sff and bmdma. To avoid overriding these ops
    accidentaly, these ops are declared const and LLDs should always
    inherit these instead of using them directly.

    After finalization, all the ops table are identical before and after
    the patch except for setting .irq_handler to ata_interrupt in drivers
    which didn't use to. The .irq_handler doesn't have any actual effect
    and the field will soon be removed by later patch.

    * sata_sx4 is still using old style EH and currently doesn't take
    advantage of ops inheritance.

    Signed-off-by: Tejun Heo

    Tejun Heo
     
  • libata lets low level drivers build scsi_host_template and register it
    to the SCSI layer. This allows low level drivers high level of
    flexibility but also burdens them with lots of boilerplate entries.

    This patch implements SHT initializers which can be used to initialize
    all the boilerplate entries in a sht. Three variants of them are
    implemented - BASE, BMDMA and NCQ - for different types of drivers.
    Note that entries can be overriden by putting individual initializers
    after the helper macro.

    All sht tables are identical before and after this patch.

    Signed-off-by: Tejun Heo

    Tejun Heo
     
  • ->irq_clear() is used to clear IRQ bit of a SFF controller and isn't
    useful for drivers which don't use libata SFF HSM implementation.
    However, it's a required callback and many drivers implement their own
    noop version as placeholder. This patch implements ata_noop_irq_clear
    and use it to replace those custom placeholders.

    Also, SFF drivers which don't support BMDMA don't need to use
    ata_bmdma_irq_clear(). It becomes noop if BMDMA address isn't
    initialized. Convert them to use ata_noop_irq_clear().

    Signed-off-by: Tejun Heo

    Tejun Heo
     

23 Jan, 2008

3 commits


29 Oct, 2007

1 commit


16 Oct, 2007

1 commit


13 Oct, 2007

5 commits

  • Currently, port configuration reporting has the following problems.

    * iomapped address is reported instead of raw address
    * report contains irrelevant fields or lacks necessary fields for
    non-SFF controllers.
    * host->irq/irq2 are there just for reporting and hacky.

    This patch implements and uses ata_port_desc() and
    ata_port_pbar_desc(). ata_port_desc() is almost identical to
    ata_ehi_push_desc() except that it takes @ap instead of @ehi, has no
    locking requirement, can only be used during host initialization and "
    " is used as separator instead of ", ". ata_port_pbar_desc() is a
    helper to ease reporting of a PCI BAR or an offsetted address into it.

    LLD pushes whatever description it wants using the above two
    functions. The accumulated description is printed on host
    registration after "[S/P]ATA max MAX_XFERMODE ".

    SFF init helpers and ata_host_activate() automatically add
    descriptions for addresses and irq respectively, so only LLDs which
    isn't standard SFF need to add custom descriptions. In many cases,
    such controllers need to report different things anyway.

    Signed-off-by: Tejun Heo
    Signed-off-by: Jeff Garzik

    Tejun Heo
     
  • It was always set to ata_port_disable(). Removed the hook, and replaced
    the very few ap->ops->port_disable() callsites with direct calls to
    ata_port_disable().

    Signed-off-by: Jeff Garzik

    Jeff Garzik
     
  • * ->irq_ack() is redundant to what the irq handler already
    performs... chk-status + irq-clear. Furthermore, it is only
    called in one place, when screaming-irq-debugging is enabled,
    so we don't want to bother with a hook just for that.

    * ata_dummy_irq_on() is only ever used in drivers that have
    no callpath reaching ->irq_on(). Remove .irq_on hook from
    those drivers, and the now-unused ata_dummy_irq_on()

    Signed-off-by: Jeff Garzik

    Jeff Garzik
     
  • Make the following functions deal with ata_link instead of ata_port.

    * ata_set_mode()
    * ata_eh_autopsy() and related functions
    * ata_eh_report() and related functions
    * suspend/resume related functions
    * ata_eh_recover() and related functions

    Signed-off-by: Tejun Heo
    Signed-off-by: Jeff Garzik

    Tejun Heo
     
  • Introduce ata_link. It abstracts PHY and sits between ata_port and
    ata_device. This new level of abstraction is necessary to support
    SATA Port Multiplier, which basically adds a bunch of links (PHYs) to
    a ATA host port. Fields related to command execution, spd_limit and
    EH are per-link and thus moved to ata_link.

    This patch only defines the host link. Multiple link handling will be
    added later. Also, a lot of ap->link derefences are added but many of
    them will be removed as each part is converted to deal directly with
    ata_link instead of ata_port.

    This patch introduces no behavior change.

    Signed-off-by: Tejun Heo
    Cc: James Bottomley
    Signed-off-by: Jeff Garzik

    Tejun Heo
     

31 Aug, 2007

1 commit


20 Jul, 2007

1 commit


03 Jul, 2007

1 commit


12 May, 2007

1 commit


10 May, 2007

1 commit


29 Apr, 2007

3 commits

  • Convert pdc_adma, pata_cs5520, pata_isapnp, pata_ixp4xx_cf,
    pata_legacy, pata_mpc52xx, pata_mpiix, pata_pcmcia, pata_pdc2027x,
    pata_platform, pata_qdi, pata_scc and pata_winbond to new init model.

    * init_one()'s now follow more consistent init order

    * cs5520 now registers one host with two ports, not two hosts. If any
    of the two ports are disabled, it's made dummy as other drivers do.

    Tested pdc_adma and pata_legacy. Both are as broken as before. The
    rest are compile tested only.

    Signed-off-by: Tejun Heo
    Signed-off-by: Jeff Garzik

    Tejun Heo
     
  • It tries to spot when the slave is a mirror of the master and to fix up
    problems that causes.

    I've got two confirmations so far that this plus the "can fail set_xfer" patch
    work for folks who had problems before. Also if you are unfortunate enough to
    be running something like HAL then it'll automount the same disk twice for you
    and corrupt it without the fix (aint that nice...)

    Tested (successfully) by Komuro .

    Signed-off-by: Alan Cox
    Signed-off-by: Andrew Morton
    Signed-off-by: Jeff Garzik

    Alan
     
  • All patches authored and signed-off-by Alan Cox, sent on Mar 7, 2007.
    I merely combined them all into a single patch.

    Signed-off-by: Jeff Garzik

    Jeff Garzik
     

26 Feb, 2007

2 commits

  • Bump versions based on changes submitted during 2.6.21 merge window.

    Signed-off-by: Jeff Garzik

    Jeff Garzik
     
  • Manuel Lass reports:
    > This bug is also present in 2.6.21-rc1, and this patch
    > indeed fixes it.

    The change to the devres layer re-orders the execution of cleanup
    functions and in turn causes the pcmcia layer to oops as it zaps a
    pointer now needed later on. We simply leave the pointer alone.

    Signed-off-by: Alan Cox
    Signed-off-by: Jeff Garzik

    Alan
     

21 Feb, 2007

1 commit


15 Feb, 2007

1 commit

  • The obsolete SA_xxx interrupt flags have been used despite the scheduled
    removal. Fixup the remaining users.

    Signed-off-by: Thomas Gleixner
    Acked-by: Ingo Molnar
    Cc: "Luck, Tony"
    Cc: Roman Zippel
    Cc: Geert Uytterhoeven
    Cc: Jeff Garzik
    Cc: Wim Van Sebroeck
    Cc: Roland Dreier
    Cc: Alessandro Zummo
    Cc: James Bottomley
    Cc: Greg KH
    Cc: Dave Airlie
    Cc: James Simmons
    Cc: "Antonino A. Daplas"
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Thomas Gleixner
     

10 Feb, 2007

3 commits

  • This patch is against each libata driver.

    Two IRQ calls are added in ata_port_operations.
    - irq_on() is used to enable interrupts.
    - irq_ack() is used to acknowledge a device interrupt.

    In most drivers, ata_irq_on() and ata_irq_ack() are used for
    irq_on and irq_ack respectively.

    In some drivers (ex: ahci, sata_sil24) which cannot use them
    as is, ata_dummy_irq_on() and ata_dummy_irq_ack() are used.

    Signed-off-by: Kou Ishizaki
    Signed-off-by: Akira Iguchi
    Signed-off-by: Jeff Garzik

    Akira Iguchi
     
  • Convert libata core layer and LLDs to use iomap.

    * managed iomap is used. Pointer to pcim_iomap_table() is cached at
    host->iomap and used through out LLDs. This basically replaces
    host->mmio_base.

    * if possible, pcim_iomap_regions() is used

    Most iomap operation conversions are taken from Jeff Garzik
    's iomap branch.

    Signed-off-by: Tejun Heo
    Signed-off-by: Jeff Garzik

    Tejun Heo
     
  • Update libata LLDs to use devres. Core layer is already converted to
    support managed LLDs. This patch simplifies initialization and fixes
    many resource related bugs in init failure and detach path. For
    example, all converted drivers now handle ata_device_add() failure
    gracefully without excessive resource rollback code.

    As most resources are released automatically on driver detach, many
    drivers don't need or can do with much simpler ->{port|host}_stop().
    In general, stop callbacks are need iff port or host needs to be given
    commands to shut it down. Note that freezing is enough in many cases
    and ports are automatically frozen before being detached.

    Signed-off-by: Tejun Heo
    Signed-off-by: Jeff Garzik

    Tejun Heo
     

05 Dec, 2006

4 commits


03 Dec, 2006

1 commit


29 Nov, 2006

1 commit


04 Oct, 2006

1 commit


27 Sep, 2006

1 commit