Commit Graph

5 Commits

Author SHA1 Message Date
Thomas Moestl
e8e2c56650 Revamp the busdma implementation a bit:
- change the IOMMU support code so that it supports overcommittting the
  available DVMA memory, while still allocating as lazily as possible.
  This is achieved by limiting the preallocation, and deferring the
  allocation to map load time when it fails. In the latter case, the
  DVMA memory reserved for unloaded maps can be stolen to free up enough
  memory for loading a map.
- allow NULL settings in the method tables, and search the parent tags
  until an appropriate implementation is found. This allows to remove some
  kluges in the old implementation.
2002-03-24 02:50:53 +00:00
Thomas Moestl
4b5504494d Add code to print the fault virtual address for uncorrectable DMA errors
caused by IOMMU misses to aid debugging. This will only work on
UltraSPARC-IIi and IIe.
2002-03-23 20:42:23 +00:00
Alfred Perlstein
91f5bcb812 Remove __P.
profile.h and bus.h were excluded because there is currently WIP.

Reviewed by: tmm
2002-03-21 00:06:55 +00:00
Thomas Moestl
e6c7af37bc Merge r1.42 of iommu.c and r1.9 of iommuvar.h from NetBSD (this adds
support for managing both streaming caches on psycho pairs).
Use explicit bus space accesses instead of mapping the device memory into
kva.
Move DVMA allocation to the map creation/dma memory allocation functions.
2002-02-13 15:59:17 +00:00
Thomas Moestl
606d0094b2 Support for the UltraSpac DVMA MMU (IOMMU), ported from NetBSD. 2001-11-09 20:14:41 +00:00