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vba_get_dma_addr(9r)
NAME
  vba_get_dma_addr - VMEbus: Returns the VMEbus address and DMA flags

SYNOPSIS
  void vba_get_dma_addr(
	  struct controller *ctlr,
	  unsigned int param_flags,
	  unsigned int *flags,
	  vme_addr_t *vme_address );

ARGUMENTS
  ctlr
      Specifies a pointer to the VMEbus device's controller data structure.

  param_flags
      Specifies the value passed to the flags argument in a call to
      dma_map_alloc() or dma_map_load(). You obtain this value in a previous
      call to the vba_set_dma_addr() routine.

  flags
      Specifies a pointer to a buffer that stores the returned DMA flags.

  vme_address
      Specifies a pointer to a buffer that stores the returned VMEbus
      address.

DESCRIPTION
  The vba_get_dma_addr() routine returns the direct memory access (DMA) flags
  and VMEbus address specified in a previous call to vba_set_dma_addr(). The
  routine recombines the VMEbus-related flag bits with the DMA-related bits
  and stores them in the address passed to the flags argument.

NOTES
  Bus adapter driver writers typically call vba_get_dma_addr() to obtain the
  VMEbus address and DMA-related flags.

RETURN VALUES
  The vba_get_dma_addr() routine returns data explicitly to the pointers
  passed to the flags and vme_address arguments.









SEE ALSO
  Kernel Routines: vba_set_dma_addr(9r)

Index for Section 9

Alphabetical listing for V

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