sys/arch/evbmips/gdium/gdium_dma.c

   1 /*      $NetBSD: gdium_dma.c,v 1.1 2009/08/06 00:50:26 matt Exp $       */
   2
   3 /*-
   4  * Copyright (c) 2001 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.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * Platform-specific DMA support for the Gdium Liberty 1000.
  34  */
  35
  36 #include <sys/cdefs.h>
  37 __KERNEL_RCSID(0, "$NetBSD: gdium_dma.c,v 1.1 2009/08/06 00:50:26 matt Exp $");
  38
  39 #include <sys/param.h>
  40
  41 #define _MIPS_BUS_DMA_PRIVATE
  42 #include <machine/bus.h>
  43
  44 #include <evbmips/gdium/gdiumreg.h>
  45 #include <evbmips/gdium/gdiumvar.h>
  46
  47 void
  48 gdium_dma_init(struct gdium_config *gc)
  49 {
  50         bus_dma_tag_t t;
  51
  52         /*
  53          * Initialize the DMA tag used for PCI DMA.
  54          */
  55         t = &gc->gc_pci_dmat;
  56         t->_cookie = gc;
  57         t->_wbase = GDIUM_DMA_PCI_PCIBASE;
  58         t->_physbase = GDIUM_DMA_PCI_PHYSBASE;
  59         t->_wsize = GDIUM_DMA_PCI_SIZE;
  60         t->_dmamap_create = _bus_dmamap_create;
  61         t->_dmamap_destroy = _bus_dmamap_destroy;
  62         t->_dmamap_load = _bus_dmamap_load;
  63         t->_dmamap_load_mbuf = _bus_dmamap_load_mbuf;
  64         t->_dmamap_load_uio = _bus_dmamap_load_uio;
  65         t->_dmamap_load_raw = _bus_dmamap_load_raw;
  66         t->_dmamap_unload = _bus_dmamap_unload;
  67         t->_dmamap_sync = _bus_dmamap_sync;
  68
  69         t->_dmamem_alloc = _bus_dmamem_alloc;
  70         t->_dmamem_free = _bus_dmamem_free;
  71         t->_dmamem_map = _bus_dmamem_map;
  72         t->_dmamem_unmap = _bus_dmamem_unmap;
  73         t->_dmamem_mmap = _bus_dmamem_mmap;
  74 }