cvs commit: src/sys/dev/sound/pci t4dwave.c

[Pyun YongHyeon]

yongari     2004-10-13 06:04:01 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/sound/pci    t4dwave.c 
  Log:
  Limit DMA address space to 1GB since the trident audio cards can't
  handle DMA addresses located above 1GB. The LBA(loop begin address)
  register which holds DMA base address is 32bits register. But the
  MSB 2bits are used for other purposes. This effectivly limits the
  DMA address space up to 1GB.
  
  Approved by:    jake (mentor)
  Reviewed by:    truckman, matk
  
  Revision  Changes    Path
  1.46      +11 -1     src/sys/dev/sound/pci/t4dwave.c