1 /* $NetBSD: ixp425_pci_dma.c,v 1.3 2005/12/11 12:16:51 christos Exp $ */ 2 3 /* 4 * Copyright (c) 2003 5 * Ichiro FUKUHARA <ichiro@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 1.3 2005/12/11 12:16:51 christos 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 = physical_start; 66 dr->dr_len = physical_end - physical_start; 67 68 dmat->_dmamap_create = _bus_dmamap_create; 69 dmat->_dmamap_destroy = _bus_dmamap_destroy; 70 dmat->_dmamap_load = _bus_dmamap_load; 71 dmat->_dmamap_load_mbuf = _bus_dmamap_load_mbuf; 72 dmat->_dmamap_load_uio = _bus_dmamap_load_uio; 73 dmat->_dmamap_load_raw = _bus_dmamap_load_raw; 74 dmat->_dmamap_unload = _bus_dmamap_unload; 75 dmat->_dmamap_sync_pre = _bus_dmamap_sync; 76 dmat->_dmamap_sync_post = NULL; 77 78 dmat->_dmamem_alloc = _bus_dmamem_alloc; 79 dmat->_dmamem_free = _bus_dmamem_free; 80 dmat->_dmamem_map = _bus_dmamem_map; 81 dmat->_dmamem_unmap = _bus_dmamem_unmap; 82 dmat->_dmamem_mmap = _bus_dmamem_mmap; 83 } 84