sys/arch/evbmips/malta/malta_dma.c

   1 /*      $NetBSD: malta_dma.c,v 1.6 2008/01/08 14:26:58 dogcow 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 MIPS Malta.
  34  */
  35
  36 #include <sys/cdefs.h>
  37 __KERNEL_RCSID(0, "$NetBSD: malta_dma.c,v 1.6 2008/01/08 14:26:58 dogcow Exp $");
  38
  39 #include <sys/param.h>
  40 #include <sys/device.h>
  41
  42 #define _MIPS_BUS_DMA_PRIVATE
  43 #include <machine/bus.h>
  44
  45 #include <dev/isa/isavar.h>
  46
  47 #include <evbmips/malta/maltareg.h>
  48 #include <evbmips/malta/maltavar.h>
  49
  50 void
  51 malta_dma_init(struct malta_config *acp)
  52 {
  53         bus_dma_tag_t t;
  54
  55         /*
  56          * Initialize the DMA tag used for PCI DMA.
  57          */
  58         t = &acp->mc_pci_dmat;
  59         t->_cookie = acp;
  60         t->_wbase = MALTA_DMA_PCI_PCIBASE;
  61         t->_physbase = MALTA_DMA_PCI_PHYSBASE;
  62         t->_wsize = MALTA_DMA_PCI_SIZE;
  63         t->_dmamap_create = _bus_dmamap_create;
  64         t->_dmamap_destroy = _bus_dmamap_destroy;
  65         t->_dmamap_load = _bus_dmamap_load;
  66         t->_dmamap_load_mbuf = _bus_dmamap_load_mbuf;
  67         t->_dmamap_load_uio = _bus_dmamap_load_uio;
  68         t->_dmamap_load_raw = _bus_dmamap_load_raw;
  69         t->_dmamap_unload = _bus_dmamap_unload;
  70         t->_dmamap_sync = _bus_dmamap_sync;
  71
  72         t->_dmamem_alloc = _bus_dmamem_alloc;
  73         t->_dmamem_free = _bus_dmamem_free;
  74         t->_dmamem_map = _bus_dmamem_map;
  75         t->_dmamem_unmap = _bus_dmamem_unmap;
  76         t->_dmamem_mmap = _bus_dmamem_mmap;
  77
  78         /*
  79          * Initialize the DMA tag used for ISA DMA.
  80          */
  81         t = &acp->mc_isa_dmat;
  82         t->_cookie = acp;
  83         t->_wbase = MALTA_DMA_ISA_PCIBASE;
  84         t->_physbase = MALTA_DMA_ISA_PHYSBASE;
  85         t->_wsize = MALTA_DMA_ISA_SIZE;
  86
  87         t->_dmamap_create = isadma_bounce_dmamap_create;
  88         t->_dmamap_destroy = isadma_bounce_dmamap_destroy;
  89         t->_dmamap_load = isadma_bounce_dmamap_load;
  90         t->_dmamap_load_mbuf = isadma_bounce_dmamap_load_mbuf;
  91         t->_dmamap_load_uio = isadma_bounce_dmamap_load_uio;
  92         t->_dmamap_load_raw = isadma_bounce_dmamap_load_raw;
  93         t->_dmamap_unload = isadma_bounce_dmamap_unload;
  94         t->_dmamap_sync = isadma_bounce_dmamap_sync;
  95
  96         t->_dmamem_alloc = isadma_bounce_dmamem_alloc;
  97         t->_dmamem_free = _bus_dmamem_free;
  98         t->_dmamem_map = _bus_dmamem_map;
  99         t->_dmamem_unmap = _bus_dmamem_unmap;
 100         t->_dmamem_mmap = _bus_dmamem_mmap;
 101 }