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int_bus_dma.c revision 1.12 
      1 /*	$NetBSD: int_bus_dma.c,v 1.12 2003/07/15 00:25:00 lukem Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2002 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed for the NetBSD Project by
     20  *	Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 /*
     39  * PCI DMA support for the ARM Integrator.
     40  */
     41 
     42 #include <sys/cdefs.h>
     43 __KERNEL_RCSID(0, "$NetBSD: int_bus_dma.c,v 1.12 2003/07/15 00:25:00 lukem Exp $");
     44 
     45 #include <sys/param.h>
     46 #include <sys/systm.h>
     47 #include <sys/device.h>
     48 #include <sys/malloc.h>
     49 #include <sys/mbuf.h>
     50 
     51 #include <uvm/uvm_extern.h>
     52 
     53 #define	_ARM32_BUS_DMA_PRIVATE
     54 #include <evbarm/integrator/int_bus_dma.h>
     55 
     56 static struct arm32_dma_range integrator_dma_ranges[1];
     57 
     58 void
     59 integrator_pci_dma_init(bus_dma_tag_t dmat)
     60 {
     61 	struct arm32_dma_range *dr = integrator_dma_ranges;
     62 	extern paddr_t physical_start, physical_end;
     63 
     64 	dr->dr_sysbase = physical_start;
     65 	dr->dr_busbase = LOCAL_TO_CM_ALIAS(dr->dr_sysbase);
     66 	dr->dr_len = physical_end - physical_start;
     67 
     68 	dmat->_ranges = dr;
     69 	dmat->_nranges = 1;
     70 
     71 	dmat->_dmamap_create = _bus_dmamap_create;
     72 	dmat->_dmamap_destroy = _bus_dmamap_destroy;
     73 	dmat->_dmamap_load = _bus_dmamap_load;
     74 	dmat->_dmamap_load_mbuf = _bus_dmamap_load_mbuf;
     75 	dmat->_dmamap_load_uio = _bus_dmamap_load_uio;
     76 	dmat->_dmamap_load_raw = _bus_dmamap_load_raw;
     77 	dmat->_dmamap_unload = _bus_dmamap_unload;
     78 	dmat->_dmamap_sync_pre = _bus_dmamap_sync;
     79 	dmat->_dmamap_sync_post = NULL;
     80 
     81 	dmat->_dmamem_alloc = _bus_dmamem_alloc;
     82 	dmat->_dmamem_free = _bus_dmamem_free;
     83 	dmat->_dmamem_map = _bus_dmamem_map;
     84 	dmat->_dmamem_unmap = _bus_dmamem_unmap;
     85 	dmat->_dmamem_mmap = _bus_dmamem_mmap;
     86 }
     87