sys/arch/arm/ixp12x0/ixp12x0_pci_dma.c

   1 /*      $NetBSD: ixp12x0_pci_dma.c,v 1.6 2003/03/25 06:12:47 igy Exp $ */
   2 /*
   3  * Copyright (c) 2002, 2003
   4  *      Ichiro FUKUHARA <ichiro@ichiro.org>.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR
  20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __KERNEL_RCSID(0, "$NetBSD: ixp12x0_pci_dma.c,v 1.6 2003/03/25 06:12:47 igy Exp $");
  31
  32 #include <sys/param.h>
  33 #include <sys/systm.h>
  34 #include <sys/device.h>
  35 #include <sys/malloc.h>
  36 #include <sys/mbuf.h>
  37
  38 #include <uvm/uvm_extern.h>
  39
  40 #define _ARM32_BUS_DMA_PRIVATE
  41 #include <machine/bus.h>
  42
  43 #include <arm/ixp12x0/ixp12x0_pcireg.h>
  44 #include <arm/ixp12x0/ixp12x0var.h>
  45
  46 void
  47 ixp12x0_pci_dma_init(struct ixp12x0_softc *sc)
  48 {
  49         extern paddr_t physical_start, physical_end;
  50
  51         bus_dma_tag_t dmat = &sc->ia_pci_dmat;
  52         struct arm32_dma_range *dr = &sc->ia_pci_dma_range;
  53
  54         dmat->_ranges = dr;
  55         dmat->_nranges = 1;
  56
  57         dr->dr_sysbase = physical_start;
  58         dr->dr_busbase = PCI_MAPREG_MEM_ADDR(IXP1200_PCI_MEM_BAR +
  59                          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 }