Eric Lee / smarc-fsl-linux-kernel

20 Aug, 2010

1 commit

19 May, 2010

1 commit

09 Jul, 2008

1 commit

  • 05781ccd7   ibm_newemac: Parameterize EMAC Multicast Match Handling ... Browse Code »

    Various instances of the EMAC core have varying: 1) number of address
    match slots, 2) width of the registers for handling address match slots,
    3) number of registers for handling address match slots and 4) base
    offset for those registers.

    As the driver stands today, it assumes that all EMACs have 4 IAHT and
    GAHT 32-bit registers, starting at offset 0x30 from the register base,
    with only 16-bits of each used for a total of 64 match slots.

    The 405EX(r) and 460EX now use the EMAC4SYNC core rather than the EMAC4
    core. This core has 8 IAHT and GAHT registers, starting at offset 0x80
    from the register base, with ALL 32-bits of each used for a total of
    256 match slots.

    This adds a new compatible device tree entry "emac4sync" and a new,
    related feature flag "EMAC_FTR_EMAC4SYNC" along with a series of macros
    and inlines which supply the appropriate parameterized value based on
    the presence or absence of the EMAC4SYNC feature.

    The code has further been reworked where appropriate to use those macros
    and inlines.

    In addition, the register size passed to ioremap is now taken from the
    device tree:

    c4 for EMAC4SYNC cores
    74 for EMAC4 cores
    70 for EMAC cores

    rather than sizeof (emac_regs).

    Finally, the device trees have been updated with the appropriate compatible
    entries and resource sizes.

    This has been tested on an AMCC Haleakala board such that: 1) inbound
    ICMP requests to 'haleakala.local' via MDNS from both Mac OS X 10.4.11
    and Ubuntu 8.04 systems as well as 2) outbound ICMP requests from
    'haleakala.local' to those same systems in the '.local' domain via MDNS
    now work.

    Signed-off-by: Grant Erickson
    Acked-by: Jeff Garzik
    Signed-off-by: Benjamin Herrenschmidt

    Grant Erickson
     

15 Dec, 2007

1 commit

08 Dec, 2007

1 commit

11 Oct, 2007

1 commit

  • 1d3bb9964   Device tree aware EMAC driver ... Browse Code »

    Based on BenH's earlier work, this is a new version of the EMAC driver
    for the built-in ethernet found on PowerPC 4xx embedded CPUs. The
    same ASIC is also found in the Axon bridge chip. This new version is
    designed to work in the arch/powerpc tree, using the device tree to
    probe the device, rather than the old and ugly arch/ppc OCP layer.

    This driver is designed to sit alongside the old driver (that lies in
    drivers/net/ibm_emac and this one in drivers/net/ibm_newemac). The
    old driver is left in place to support arch/ppc until arch/ppc itself
    reaches its final demise (not too long now, with luck).

    This driver still has a number of things that could do with cleaning
    up, but I think they can be fixed up after merging. Specifically:
    - Should be adjusted to properly use the dma mapping API.
    Axon needs this.
    - Probe logic needs reworking, in conjuction with the general
    probing code for of_platform devices. The dependencies here between
    EMAC, MAL, ZMII etc. make this complicated. At present, it usually
    works, because we initialize and register the sub-drivers before the
    EMAC driver itself, and (being in driver code) runs after the devices
    themselves have been instantiated from the device tree.

    Signed-off-by: David Gibson
    Signed-off-by: Jeff Garzik

    David Gibson