1 /* $NetBSD: octeon_dma.c,v 1.2 2016/07/11 16:15:35 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Platform-specific DMA support for the MIPS OCTEON. Copied from MALTA code. 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: octeon_dma.c,v 1.2 2016/07/11 16:15:35 matt Exp $"); 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 49 #include <mips/cpuregs.h> 50 51 #define _MIPS_BUS_DMA_PRIVATE 52 #include <sys/bus.h> 53 54 #include <mips/cavium/octeonvar.h> 55 56 void 57 octeon_dma_init(struct octeon_config *mcp) 58 { 59 bus_dma_tag_t t; 60 61 /* XXX need 32bit tag? */ 62 t = &mcp->mc_iobus_dmat; 63 t->_cookie = mcp; 64 t->_wbase = 0; 65 t->_bounce_alloc_lo = 0; 66 t->_bounce_alloc_hi = 0; 67 t->_dmamap_ops = mips_bus_dmamap_ops; 68 t->_dmamem_ops = mips_bus_dmamem_ops; 69 t->_dmatag_ops = mips_bus_dmatag_ops; 70 71 /* XXX struct copy */ 72 mcp->mc_bootbus_dmat = mcp->mc_iobus_dmat; 73 mcp->mc_core1_dmat = mcp->mc_iobus_dmat; 74 mcp->mc_fpa_dmat = mcp->mc_iobus_dmat; 75 76 #ifdef __mips_n32 77 mcp->mc_fpa_dmat._bounce_alloc_hi = round_page(MIPS_PHYS_MASK); 78 #endif 79 } 80