sys/arch/arm/xscale/ixp425_pci_dma.c

   1 /*      $NetBSD: ixp425_pci_dma.c,v 1.3 2005/12/11 12:16:51 christos Exp $ */
   2
   3 /*
   4  * Copyright (c) 2003
   5  *      Ichiro FUKUHARA <ichiro@ichiro.org>.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR
  21  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include <sys/cdefs.h>
  31 __KERNEL_RCSID(0, "$NetBSD: ixp425_pci_dma.c,v 1.3 2005/12/11 12:16:51 christos Exp $");
  32
  33 #include <sys/param.h>
  34 #include <sys/systm.h>
  35 #include <sys/device.h>
  36 #include <sys/malloc.h>
  37 #include <sys/mbuf.h>
  38
  39 #include <uvm/uvm_extern.h>
  40
  41 #define _ARM32_BUS_DMA_PRIVATE
  42 #include <machine/bus.h>
  43
  44 #include <arm/xscale/ixp425reg.h>
  45 #include <arm/xscale/ixp425var.h>
  46
  47 void
  48 ixp425_pci_dma_init(struct ixp425_softc *sc)
  49 {
  50         extern paddr_t physical_start, physical_end;
  51
  52         bus_dma_tag_t dmat = &sc->ia_pci_dmat;
  53         struct arm32_dma_range *dr = &sc->ia_pci_dma_range;
  54
  55         dmat->_ranges = dr;
  56         dmat->_nranges = 1;
  57
  58         dr->dr_sysbase = physical_start;
  59         dr->dr_busbase = physical_start;
  60         dr->dr_len = physical_end - physical_start;
  61
  62         dmat->_dmamap_create = _bus_dmamap_create;
  63         dmat->_dmamap_destroy = _bus_dmamap_destroy;
  64         dmat->_dmamap_load = _bus_dmamap_load;
  65         dmat->_dmamap_load_mbuf = _bus_dmamap_load_mbuf;
  66         dmat->_dmamap_load_uio = _bus_dmamap_load_uio;
  67         dmat->_dmamap_load_raw = _bus_dmamap_load_raw;
  68         dmat->_dmamap_unload = _bus_dmamap_unload;
  69         dmat->_dmamap_sync_pre = _bus_dmamap_sync;
  70         dmat->_dmamap_sync_post = NULL;
  71
  72         dmat->_dmamem_alloc = _bus_dmamem_alloc;
  73         dmat->_dmamem_free = _bus_dmamem_free;
  74         dmat->_dmamem_map = _bus_dmamem_map;
  75         dmat->_dmamem_unmap = _bus_dmamem_unmap;
  76         dmat->_dmamem_mmap = _bus_dmamem_mmap;
  77 }