1 /* $NetBSD: gdium_dma.c,v 1.2 2009/08/06 16:37:01 matt Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Platform-specific DMA support for the Gdium Liberty 1000. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: gdium_dma.c,v 1.2 2009/08/06 16:37:01 matt Exp $"); 38 39 #include <sys/param.h> 40 41 #define _MIPS_BUS_DMA_PRIVATE 42 #include <machine/bus.h> 43 44 #include <evbmips/gdium/gdiumreg.h> 45 #include <evbmips/gdium/gdiumvar.h> 46 47 void 48 gdium_dma_init(struct gdium_config *gc) 49 { 50 bus_dma_tag_t t; 51 52 /* 53 * Initialize the DMA tag used for PCI DMA. 54 */ 55 t = &gc->gc_pci_dmat; 56 t->_cookie = gc; 57 t->_wbase = GDIUM_DMA_PCI_PCIBASE; 58 t->_physbase = GDIUM_DMA_PCI_PHYSBASE; 59 t->_wsize = GDIUM_DMA_PCI_SIZE; 60 t->_dmamap_create = _bus_dmamap_create; 61 t->_dmamap_destroy = _bus_dmamap_destroy; 62 t->_dmamap_load = _bus_dmamap_load; 63 t->_dmamap_load_mbuf = _bus_dmamap_load_mbuf; 64 t->_dmamap_load_uio = _bus_dmamap_load_uio; 65 t->_dmamap_load_raw = _bus_dmamap_load_raw; 66 t->_dmamap_unload = _bus_dmamap_unload; 67 t->_dmamap_sync = _bus_dmamap_sync; 68 69 t->_dmamem_alloc = _bus_dmamem_alloc; 70 t->_dmamem_free = _bus_dmamem_free; 71 t->_dmamem_map = _bus_dmamem_map; 72 t->_dmamem_unmap = _bus_dmamem_unmap; 73 t->_dmamem_mmap = _bus_dmamem_mmap; 74 } 75