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ixp425_pci_dma.c revision 1.1 
      1 /*	$NetBSD: ixp425_pci_dma.c,v 1.1 2003/09/25 14:11:18 ichiro Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2003
      5  *	Ichiro FUKUHARA <ichiro (at) ichiro.org>.
      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. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by Ichiro FUKUHARA.
     19  * 4. The name of the company nor the name of the author may be used to
     20  *    endorse or promote products derived from this software without specific
     21  *    prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR
     24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     26  * IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR
     27  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 __KERNEL_RCSID(0, "$NetBSD: ixp425_pci_dma.c,v 1.1 2003/09/25 14:11:18 ichiro Exp $");
     38 
     39 #include <sys/param.h>
     40 #include <sys/systm.h>
     41 #include <sys/device.h>
     42 #include <sys/malloc.h>
     43 #include <sys/mbuf.h>
     44 
     45 #include <uvm/uvm_extern.h>
     46 
     47 #define _ARM32_BUS_DMA_PRIVATE
     48 #include <machine/bus.h>
     49 
     50 #include <arm/xscale/ixp425reg.h>
     51 #include <arm/xscale/ixp425var.h>
     52 
     53 void
     54 ixp425_pci_dma_init(struct ixp425_softc *sc)
     55 {
     56 	extern paddr_t physical_start, physical_end;
     57 
     58 	bus_dma_tag_t dmat = &sc->ia_pci_dmat;
     59 	struct arm32_dma_range *dr = &sc->ia_pci_dma_range;
     60 
     61 	dmat->_ranges = dr;
     62 	dmat->_nranges = 1;
     63 
     64 	dr->dr_sysbase = physical_start;
     65 	dr->dr_busbase = PCI_MAPREG_MEM_ADDR(IXP425_PCI_MEM_VBASE +
     66 			 physical_start);
     67 	dr->dr_busbase = physical_start;
     68 	dr->dr_len = physical_end - physical_start;
     69 
     70 	dmat->_dmamap_create = _bus_dmamap_create;
     71 	dmat->_dmamap_destroy = _bus_dmamap_destroy;
     72 	dmat->_dmamap_load = _bus_dmamap_load;
     73 	dmat->_dmamap_load_mbuf = _bus_dmamap_load_mbuf;
     74 	dmat->_dmamap_load_uio = _bus_dmamap_load_uio;
     75 	dmat->_dmamap_load_raw = _bus_dmamap_load_raw;
     76 	dmat->_dmamap_unload = _bus_dmamap_unload;
     77 	dmat->_dmamap_sync_pre = _bus_dmamap_sync;
     78 	dmat->_dmamap_sync_post = NULL;
     79 
     80 	dmat->_dmamem_alloc = _bus_dmamem_alloc;
     81 	dmat->_dmamem_free = _bus_dmamem_free;
     82 	dmat->_dmamem_map = _bus_dmamem_map;
     83 	dmat->_dmamem_unmap = _bus_dmamem_unmap;
     84 	dmat->_dmamem_mmap = _bus_dmamem_mmap;
     85 }
     86