• David S. Miller's avatar
    [SPARC64]: Fix conflicts in SBUS/PCI/EBUS/ISA DMA handling. · ad7ad57c
    David S. Miller authored
    Fully unify all of the DMA ops so that subordinate bus types to
    the DMA operation providers (such as ebus, isa, of_device) can
    work transparently.
    
    Basically, we just make sure that for every system device we
    create, the dev->archdata 'iommu' and 'stc' fields are filled
    in.
    
    Then we have two platform variants of the DMA ops, one for SUN4U which
    actually programs the real hardware, and one for SUN4V which makes
    hypervisor calls.
    
    This also fixes the crashes in parport_pc on sparc64, reported by
    Meelis Roos.
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    ad7ad57c
iommu.h 1.63 KB