sys/arch/arm/gemini/gemini_dma.c

   1 /*      $NetBSD$        */
   2
   3 /* adapted from:
   4  *      NetBSD: pxa2x0_dma.c,v 1.4 2005/12/11 12:16:51 christos Exp
   5  */
   6
   7 /*
   8  * Copyright (c) 2002  Genetec Corporation.  All rights reserved.
   9  * Written by Hiroyuki Bessho for Genetec Corporation.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgement:
  21  *      This product includes software developed for the NetBSD Project by
  22  *      Genetec Corporation.
  23  * 4. The name of Genetec Corporation may not be used to endorse or
  24  *    promote products derived from this software without specific prior
  25  *    written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
  28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GENETEC CORPORATION
  31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  37  * POSSIBILITY OF SUCH DAMAGE.
  38  */
  39
  40 /*
  41  * bus dma tag for PXA2[15]0 processor.
  42  * (Currently used only for LCD frame buffer)
  43  */
  44
  45 #include <sys/cdefs.h>
  46 __KERNEL_RCSID(0, "$NetBSD$");
  47
  48 #include <sys/param.h>
  49 #include <sys/systm.h>
  50 #include <sys/device.h>
  51 #include <sys/malloc.h>
  52 #include <sys/mbuf.h>
  53
  54 #include <uvm/uvm_extern.h>
  55
  56 #define _ARM32_BUS_DMA_PRIVATE
  57 #include <machine/bus.h>
  58
  59 struct arm32_bus_dma_tag gemini_bus_dma_tag = {
  60         0,
  61         0,
  62         NULL,                   /* _cookie */
  63         _bus_dmamap_create,
  64         _bus_dmamap_destroy,
  65         _bus_dmamap_load,
  66         _bus_dmamap_load_mbuf,
  67         _bus_dmamap_load_uio,
  68         _bus_dmamap_load_raw,
  69         _bus_dmamap_unload,
  70         _bus_dmamap_sync,
  71         NULL,                   /* sync_post */
  72         _bus_dmamem_alloc,
  73         _bus_dmamem_free,
  74         _bus_dmamem_map,
  75         _bus_dmamem_unmap,
  76         _bus_dmamem_mmap
  77 };
  78