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  1. 30 Mar, 2006 4 commits
    • Alan Cox's avatar
      [PATCH] libata: Simplex and other mode filtering logic · 5444a6f4
      Alan Cox authored 
      Add a field to the host_set called 'flags' (was host_set_flags changed
to suit Jeff)
Add a simplex_claimed field so we can remember who owns the DMA channel
Add a ->mode_filter() hook to allow drivers to filter modes
Add docs for mode_filter and set_mode
Filter according to simplex state
Filter cable in core

This provides the needed framework to support all the mode rules found
in the PATA world. The simplex filter deals with 'to spec' simplex DMA
systems found in older chips. The cable filter avoids duplicating the
same rules in each chip driver with PATA. Finally the mode filter is
neccessary because drive/chip combinations have errata that forbid
certain modes with some drives or types of ATA object.

Drive speed setup remains per channel for now and the filters now use
the framework Tejun put into place which cleans them up a lot from the
older libata-pata patches.
Signed-off-by: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
      5444a6f4
    • Alan Cox's avatar
      [PATCH] libata - ATA is both ATA and CFA · 692785e7
      Alan Cox authored 
      I think this is still needed with the new probe code (which btw seems to
be missing docs in upstream ?).
Signed-off-by: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
      692785e7
    • Alan Cox's avatar
      [PATCH] libata: Add ->set_mode hook for odd drivers · e35a9e01
      Alan Cox authored 
      Some hardware doesn't want the usual mode setup logic running. This
allows the hardware driver to replace it for special cases in the least
invasive way possible.
Signed-off-by: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
      e35a9e01
    • Alan Cox's avatar
      [PATCH] libata: BMDMA handling updates · 4e5ec5db
      Alan Cox authored 
      This is the minimal patch set to enable the current code to be used with
a controller following SFF (ie any PATA and early SATA controllers)
safely without crashes if there is no BMDMA area or if BMDMA is not
assigned by the BIOS for some reason.

Simplex status is recorded but not acted upon in this change, this isn't
a problem with the current drivers as none of them are for simplex
hardware. A following diff will deal with that.

The flags in the probe structure remain ->host_set_flags although Jeff
asked me to rename them, simply because the rename would break the usual
Linux rules that old code should break when there are changes. not
compile and run and then blow up/eat your computer/etc. Renaming this
later is a trivial exercise once a better name is chosen.
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
      4e5ec5db
  3. 29 Mar, 2006 36 commits