ASTRO(4) | Device Drivers Manual (hppa) | ASTRO(4) |
astro
— Astro
Memory and I/O controller
astro* at mainbus?
elroy* at astro?
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.
The astro
driver first appeared in
OpenBSD 4.2. It was ported to
NetBSD 6.0 by Nick Hudson.
February 17, 2017 | NetBSD 10.99 |