sys/arch/evbarm/smdk2xx0/smdk2800_pci.c

   1 /*      $NetBSD: smdk2800_pci.c,v 1.1.8.3 2004/09/21 13:14:53 skrll Exp $ */
   2
   3 /*
   4  * Copyright (c) 2002 Fujitsu Component Limited
   5  * Copyright (c) 2002 Genetec Corporation
   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  * 3. Neither the name of The Fujitsu Component Limited nor the name of
  17  *    Genetec corporation may not be used to endorse or promote products
  18  *    derived from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY FUJITSU COMPONENT LIMITED AND GENETEC
  21  * CORPORATION ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  22  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  23  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  24  * DISCLAIMED.  IN NO EVENT SHALL FUJITSU COMPONENT LIMITED OR GENETEC
  25  * CORPORATION BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  28  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  29  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 /*
  36  * Platform specific part for S3C2800 PCI support on SMDK2800
  37  */
  38
  39 #include <sys/cdefs.h>
  40 __KERNEL_RCSID(0, "$NetBSD: smdk2800_pci.c,v 1.1.8.3 2004/09/21 13:14:53 skrll Exp $");
  41
  42 #include <sys/param.h>
  43 #include <sys/types.h>
  44 #include <sys/device.h>
  45 #include <sys/systm.h>
  46 #include <sys/extent.h>
  47
  48 #define _ARM32_BUS_DMA_PRIVATE
  49 #include <machine/bus.h>
  50
  51 #include <dev/pci/pcivar.h>
  52 #include <dev/pci/pciconf.h>
  53
  54 #include <arm/s3c2xx0/s3c2800var.h>
  55
  56 static struct arm32_dma_range smdk2800_dma_ranges[1];
  57
  58 static struct arm32_bus_dma_tag smdk2800_bus_dma = {
  59         NULL,                   /* _ranges: set by init routine */
  60         0,                      /* _nranges */
  61
  62         NULL,                   /* _cookie */
  63
  64         _bus_dmamap_create,
  65         _bus_dmamap_destroy,
  66         _bus_dmamap_load,
  67         _bus_dmamap_load_mbuf,
  68         _bus_dmamap_load_uio,
  69         _bus_dmamap_load_raw,
  70         _bus_dmamap_unload,
  71         _bus_dmamap_sync,
  72         NULL,                   /* sync_post */
  73
  74         _bus_dmamem_alloc,
  75         _bus_dmamem_free,
  76         _bus_dmamem_map,
  77         _bus_dmamem_unmap,
  78         _bus_dmamem_mmap,
  79 };
  80
  81 bus_dma_tag_t
  82 s3c2800_pci_dma_init(void)
  83 {
  84         extern paddr_t physical_start, physical_end;
  85
  86         smdk2800_dma_ranges[0].dr_sysbase = physical_start;
  87         smdk2800_dma_ranges[0].dr_busbase =
  88             0x80000000 + physical_start - S3C2800_DBANK0_START;
  89         smdk2800_dma_ranges[0].dr_len = physical_end - physical_start;
  90
  91         smdk2800_bus_dma._ranges = smdk2800_dma_ranges;
  92         smdk2800_bus_dma._nranges = 1;
  93
  94         return &smdk2800_bus_dma;
  95 }