Eric Lee / smarc-fsl-linux-kernel

02 Mar, 2011

1 commit

26 May, 2010

1 commit

  • c3b288942   libata-sff: separate out BMDMA irq handler ... Browse Code »

    Separate out BMDMA irq handler from SFF irq handler. The misnamed
    host_intr() functions are renamed to ata_sff_port_intr() and
    ata_bmdma_port_intr(). Common parts are factored into
    __ata_sff_port_intr() and __ata_sff_interrupt() and used by sff and
    bmdma interrupt routines.

    All BMDMA drivers now use ata_bmdma_interrupt() or
    ata_bmdma_port_intr() while all non-BMDMA SFF ones use
    ata_sff_interrupt() or ata_sff_port_intr().

    For now, ata_pci_sff_init_one() uses ata_bmdma_interrupt() as it's
    used by both SFF and BMDMA drivers.

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

    Tejun Heo
     

17 Apr, 2009

1 commit

  • e3cf95dd6   ata: Report 16/32bit PIO as best we can ... Browse Code »

    The legacy old IDE ioctl API for this is a bit primitive so we try
    and map stuff sensibly onto it.

    - Set PIO over DMA devices to report 32bit
    - Add ability to change the PIO32 settings if the controller permits it
    - Add that functionality into the sff drivers
    - Add that functionality into the VLB legacy driver
    - Turn on the 32bit PIO on the ninja32 and add support there

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

    Alan Cox
     

25 Mar, 2009

1 commit

09 Dec, 2008

1 commit

28 Oct, 2008

2 commits

18 Apr, 2008

4 commits

  • 5682ed33a   libata: rename SFF port ops ... Browse Code »

    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
     
  • 9363c3825   libata: rename SFF functions ... Browse Code »

    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
     
  • 029cfd6b7   libata: implement and use ops inheritance ... Browse Code »

    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
     
  • 68d1d07b5   libata: implement and use SHT initializers ... Browse Code »

    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
     

12 Feb, 2008

1 commit

  • 419464507   pata_ninja32: setup changes ... Browse Code »

    Forcibly set more of the configuration at init time. This seems to fix at
    least one problem reported. We don't know what most of these bits do, but
    we do know what windows stuffs there.

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

    Alan Cox
     

23 Jan, 2008

2 commits