• David S. Miller's avatar
    [SPARC64]: SUN4U PCI-E controller support. · 861fe906
    David S. Miller authored
    Some minor refactoring in the generic code was necessary for
    this:
    
    1) This controller requires 8-byte access to the interrupt map
       and clear register.  They are 64-bits on all the other
       SBUS and PCI controllers anyways, so this was easy to cure.
    
    2) The IMAP register has a different layout and some bits that we
       need to preserve, so use a read/modify/write when making
       changes to the IMAP register in generic code.
    
    3) Flushing the entire IOMMU TLB is best done with a single write
       to a register on this PCI controller, add a iommu->iommu_flushinv
       for this.
    
    Still lacks MSI support, that will come later.
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    861fe906
irq.c 19.5 KB