From owner-cvs-all  Sat Mar 23 18:50:58 2002
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From: Thomas Moestl <tmm@FreeBSD.org>
Date: Sat, 23 Mar 2002 18:50:53 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/sparc64/include bus.h bus_private.h iommuvar.h
         src/sys/sparc64/pci psycho.c src/sys/sparc64/sbus sbus.c
         src/sys/sparc64/sparc64 bus_machdep.c iommu.c
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tmm         2002/03/23 18:50:53 PST

  Modified files:
    sys/sparc64/include  bus.h iommuvar.h 
    sys/sparc64/pci      psycho.c 
    sys/sparc64/sbus     sbus.c 
    sys/sparc64/sparc64  bus_machdep.c iommu.c 
  Added files:
    sys/sparc64/include  bus_private.h 
  Log:
  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.
  
  Revision  Changes    Path
  1.8       +91 -24    src/sys/sparc64/include/bus.h
  1.1       +47 -0     src/sys/sparc64/include/bus_private.h (new)
  1.5       +12 -12    src/sys/sparc64/include/iommuvar.h
  1.10      +41 -32    src/sys/sparc64/pci/psycho.c
  1.2       +40 -32    src/sys/sparc64/sbus/sbus.c
  1.8       +62 -47    src/sys/sparc64/sparc64/bus_machdep.c
  1.5       +158 -77   src/sys/sparc64/sparc64/iommu.c

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