sys/arch/alpha/tc/tc_dma.c

   1 /* $NetBSD: tc_dma.c,v 1.11 2008/04/28 20:23:12 martin Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
   9  * NASA Ames Research Center.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/cdefs.h>                  /* RCS ID & Copyright macro defns */
  34
  35 __KERNEL_RCSID(0, "$NetBSD: tc_dma.c,v 1.11 2008/04/28 20:23:12 martin Exp $");
  36
  37 #include <sys/param.h>
  38 #include <sys/device.h>
  39
  40 #define _ALPHA_BUS_DMA_PRIVATE
  41 #include <machine/bus.h>
  42
  43 #include <dev/tc/tcvar.h>
  44
  45 struct alpha_bus_dma_tag tc_dmat_direct = {
  46         NULL,                           /* _cookie */
  47         0,                              /* _wbase */
  48         0,                              /* _wsize */
  49         NULL,                           /* _next_window */
  50         0,                              /* _boundary */
  51         NULL,                           /* _sgmap */
  52         0,                              /* _pfthresh */
  53         NULL,                           /* _get_tag */
  54         _bus_dmamap_create,
  55         _bus_dmamap_destroy,
  56         _bus_dmamap_load_direct,
  57         _bus_dmamap_load_mbuf_direct,
  58         _bus_dmamap_load_uio_direct,
  59         _bus_dmamap_load_raw_direct,
  60         _bus_dmamap_unload,
  61         _bus_dmamap_sync,
  62         _bus_dmamem_alloc,
  63         _bus_dmamem_free,
  64         _bus_dmamem_map,
  65         _bus_dmamem_unmap,
  66         _bus_dmamem_mmap,
  67 };
  68
  69 void
  70 tc_dma_init(void)
  71 {
  72
  73         /* XXX XXX BEGIN XXX XXX */
  74         {                                                       /* XXX */
  75                 extern paddr_t alpha_XXX_dmamap_or;             /* XXX */
  76                 alpha_XXX_dmamap_or = 0;                        /* XXX */
  77         }                                                       /* XXX */
  78         /* XXX XXX END XXX XXX */
  79 }