astro(4) - NetBSD Manual Pages

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ASTRO(4)             NetBSD/hppa Kernel Interfaces Manual             ASTRO(4)


NAME

     astro -- Astro Memory and I/O controller


SYNOPSIS

     astro* at mainbus?
     elroy* at astro?


DESCRIPTION

     The astro driver provides support for the Astro memory and I/O controller
     used on systems with PA-8500 and later 64-bit CPUs.  It functions as a
     bridge from the Runway bus to up to 8 I/O ropes that connect to Elroy
     chips.  Astro contains an IOMMU and provides support for cache coherent
     DMA.


SEE ALSO

     hppa/cpu(4), hppa/elroy(4), hppa/intro(4)


HISTORY

     The astro driver first appeared in OpenBSD 4.2.  It was ported to
     NetBSD 6.0 by Nick Hudson.

NetBSD 9.3                     February 17, 2017                    NetBSD 9.3