1 /* $NetBSD: ixp12x0_pci_dma.c,v 1.6 2003/03/25 06:12:47 igy Exp $ */ 2 /* 3 * Copyright (c) 2002, 2003 4 * Ichiro FUKUHARA <ichiro@ichiro.org>. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Ichiro FUKUHARA. 18 * 4. The name of the company nor the name of the author may be used to 19 * endorse or promote products derived from this software without specific 20 * prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR 26 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: ixp12x0_pci_dma.c,v 1.6 2003/03/25 06:12:47 igy Exp $"); 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/device.h> 41 #include <sys/malloc.h> 42 #include <sys/mbuf.h> 43 44 #include <uvm/uvm_extern.h> 45 46 #define _ARM32_BUS_DMA_PRIVATE 47 #include <machine/bus.h> 48 49 #include <arm/ixp12x0/ixp12x0_pcireg.h> 50 #include <arm/ixp12x0/ixp12x0var.h> 51 52 void 53 ixp12x0_pci_dma_init(struct ixp12x0_softc *sc) 54 { 55 extern paddr_t physical_start, physical_end; 56 57 bus_dma_tag_t dmat = &sc->ia_pci_dmat; 58 struct arm32_dma_range *dr = &sc->ia_pci_dma_range; 59 60 dmat->_ranges = dr; 61 dmat->_nranges = 1; 62 63 dr->dr_sysbase = physical_start; 64 dr->dr_busbase = PCI_MAPREG_MEM_ADDR(IXP1200_PCI_MEM_BAR + 65 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