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malta_dma.c revision 1.6.6.1 
      1 /*	$NetBSD: malta_dma.c,v 1.6.6.1 2008/06/02 13:22:03 mjf 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 1.6.6.1 2008/06/02 13:22:03 mjf 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 }
    102