1 /* $NetBSD: ixp12x0_pci_dma.c,v 1.7 2009/10/21 14:15:50 rmind 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 * 16 * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: ixp12x0_pci_dma.c,v 1.7 2009/10/21 14:15:50 rmind Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/device.h> 35 #include <sys/malloc.h> 36 #include <sys/mbuf.h> 37 38 #include <uvm/uvm_extern.h> 39 40 #define _ARM32_BUS_DMA_PRIVATE 41 #include <machine/bus.h> 42 43 #include <arm/ixp12x0/ixp12x0_pcireg.h> 44 #include <arm/ixp12x0/ixp12x0var.h> 45 46 void 47 ixp12x0_pci_dma_init(struct ixp12x0_softc *sc) 48 { 49 extern paddr_t physical_start, physical_end; 50 51 bus_dma_tag_t dmat = &sc->ia_pci_dmat; 52 struct arm32_dma_range *dr = &sc->ia_pci_dma_range; 53 54 dmat->_ranges = dr; 55 dmat->_nranges = 1; 56 57 dr->dr_sysbase = physical_start; 58 dr->dr_busbase = PCI_MAPREG_MEM_ADDR(IXP1200_PCI_MEM_BAR + 59 physical_start); 60 dr->dr_len = physical_end - physical_start; 61 62 dmat->_dmamap_create = _bus_dmamap_create; 63 dmat->_dmamap_destroy = _bus_dmamap_destroy; 64 dmat->_dmamap_load = _bus_dmamap_load; 65 dmat->_dmamap_load_mbuf = _bus_dmamap_load_mbuf; 66 dmat->_dmamap_load_uio = _bus_dmamap_load_uio; 67 dmat->_dmamap_load_raw = _bus_dmamap_load_raw; 68 dmat->_dmamap_unload = _bus_dmamap_unload; 69 dmat->_dmamap_sync_pre = _bus_dmamap_sync; 70 dmat->_dmamap_sync_post = NULL; 71 72 dmat->_dmamem_alloc = _bus_dmamem_alloc; 73 dmat->_dmamem_free = _bus_dmamem_free; 74 dmat->_dmamem_map = _bus_dmamem_map; 75 dmat->_dmamem_unmap = _bus_dmamem_unmap; 76 dmat->_dmamem_mmap = _bus_dmamem_mmap; 77 } 78