1/* $NetBSD: sbbrz.c,v 1.9 2022/03/03 06:27:21 riastradh Exp $ */ 2 3/* 4 * Copyright 2000, 2001 5 * Broadcom Corporation. All rights reserved. 6 * 7 * This software is furnished under license and may be used and copied only 8 * in accordance with the following terms and conditions. Subject to these 9 * conditions, you may download, copy, install, use, modify and distribute 10 * modified or unmodified copies of this software in source and/or binary 11 * form. No title or ownership is transferred hereby. 12 * 13 * 1) Any source code used, modified or distributed must reproduce and 14 * retain this copyright notice and list of conditions as they appear in 15 * the source file. 16 * 17 * 2) No right is granted to use any trade name, trademark, or logo of 18 * Broadcom Corporation. Neither the "Broadcom Corporation" name nor any 19 * trademark or logo of Broadcom Corporation may be used to endorse or 20 * promote products derived from this software without the prior written 21 * permission of Broadcom Corporation. 22 * 23 * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR IMPLIED 24 * WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR 26 * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM BE LIABLE 27 * FOR ANY DAMAGES WHATSOEVER, AND IN PARTICULAR, BROADCOM SHALL NOT BE 28 * LIABLE FOR DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 31 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 32 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 33 * OR OTHERWISE), EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36/* from: $NetBSD: apecs.c,v 1.38 2000/06/29 08:58:45 mrg Exp */ 37 38/*- 39 * Copyright (c) 2000, 2010 The NetBSD Foundation, Inc. 40 * All rights reserved. 41 * 42 * This code is derived from software contributed to The NetBSD Foundation 43 * by Jason R. Thorpe. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 55 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 56 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 57 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 58 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 59 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 60 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 61 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 62 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 63 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 64 * POSSIBILITY OF SUCH DAMAGE. 65 */ 66 67/* 68 * Copyright (c) 1995, 1996 Carnegie-Mellon University. 69 * All rights reserved. 70 * 71 * Author: Chris G. Demetriou 72 * 73 * Permission to use, copy, modify and distribute this software and 74 * its documentation is hereby granted, provided that both the copyright 75 * notice and this permission notice appear in all copies of the 76 * software, derivative works or modified versions, and any portions 77 * thereof, and that both notices appear in supporting documentation. 78 * 79 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 80 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 81 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 82 * 83 * Carnegie Mellon requests users of this software to return to 84 * 85 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 86 * School of Computer Science 87 * Carnegie Mellon University 88 * Pittsburgh PA 15213-3890 89 * 90 * any improvements or extensions that they make and grant Carnegie the 91 * rights to redistribute these changes. 92 */ 93 94/* 95 * Driver for SB-1250 I/O bridge 0, which provides the PCI and LDT 96 * interfaces. 97 */ 98 99#define _MIPS_BUS_DMA_PRIVATE 100 101#include <sys/param.h> 102#include <sys/device.h> 103#include <sys/systm.h> 104#include <sys/bus.h> 105 106#include <dev/pci/pcireg.h> 107#include <dev/pci/pcivar.h> 108#include <dev/pci/pcidevs.h> 109 110#include <mips/locore.h> 111#include <mips/sibyte/include/sb1250_regs.h> 112#include <mips/sibyte/include/sb1250_scd.h> 113#include <mips/sibyte/include/zbbusvar.h> 114#include <mips/sibyte/pci/sbbrzvar.h> 115 116static int sbbrz_match(device_t, cfdata_t, void *); 117static void sbbrz_attach(device_t, device_t, void *); 118 119CFATTACH_DECL_NEW(sbbrz, 0, sbbrz_match, sbbrz_attach, NULL, NULL); 120 121static int sbbrz_print(void *, const char *pnp); 122 123/* There can be only one. */ 124struct sbbrz_softc sbbrz_softc; 125 126static int 127sbbrz_match(device_t parent, cfdata_t match, void *aux) 128{ 129 struct zbbus_attach_args *zap = aux; 130 131 if (zap->za_locs.za_type != ZBBUS_ENTTYPE_BRZ) 132 return (0); 133 134 if (sbbrz_softc.sc_dev != NULL) 135 return (0); 136 137 return 1; 138} 139 140/* 141 * Set up the chipset's function pointers. 142 */ 143static void 144sbbrz_init(struct sbbrz_softc *sc) 145{ 146 int error; 147 148 sbbrz_bus_io_init(&sc->sc_iot, sc); 149 sbbrz_bus_mem_init(&sc->sc_memt, sc); 150 151 bus_dma_tag_t t = &sc->sc_dmat64; 152 t->_cookie = sc; 153 t->_wbase = 0; 154 t->_bounce_alloc_lo = 0; 155 t->_bounce_alloc_hi = 0; 156 t->_dmamap_ops = mips_bus_dmamap_ops; 157 t->_dmamem_ops = mips_bus_dmamem_ops; 158 t->_dmatag_ops = mips_bus_dmatag_ops; 159 160 error = bus_dmatag_subregion(t, 0, __MASK(32), &sc->sc_dmat32, 0); 161 if (error) 162 panic("%s: failed to create 32bit dma tag: %d", 163 __func__, error); 164 165 sbbrz_pci_init(&sc->sc_pc, sc); 166} 167 168static void 169sbbrz_attach(device_t parent, device_t self, void *aux) 170{ 171 struct sbbrz_softc *sc = &sbbrz_softc; 172 struct pcibus_attach_args pba; 173 uint64_t regval; 174 bool host; 175 176 /* Tell the user whether it's host or device mode. */ 177 regval = mips3_ld((register_t)MIPS_PHYS_TO_KSEG1(A_SCD_SYSTEM_CFG)); 178 host = (regval & M_SYS_PCI_HOST) != 0; 179 180 aprint_normal(": %s pci mode\n", host ? "host" : "device"); 181 182 /* note that we've attached the bridge; can't have two. */ 183 sc->sc_dev = self; 184 device_set_private(self, sc); 185 186 /* 187 * set up the bridge's info; done once at console init time 188 * (maybe), but doesn't hurt to do twice. 189 */ 190 sbbrz_init(sc); 191 192#if _has_pba_busname 193 pba.pba_busname = "pci"; 194#endif 195 pba.pba_iot = &sc->sc_iot; 196 pba.pba_memt = &sc->sc_memt; 197 pba.pba_dmat64 = &sc->sc_dmat64; 198 pba.pba_dmat = sc->sc_dmat32; 199 pba.pba_pc = &sc->sc_pc; 200 pba.pba_bus = 0; 201 pba.pba_bridgetag = NULL; 202 pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY | 203 PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY; 204 config_found(self, &pba, sbbrz_print, CFARGS_NONE); 205} 206 207static int 208sbbrz_print(void *aux, const char *pnp) 209{ 210 struct pcibus_attach_args *pba = aux; 211 212 /* only PCIs can attach to sbbrz; easy. */ 213 if (pnp) 214#if _has_pba_busname 215 aprint_normal("%s at %s\n", pba->pba_busname, pnp); 216#else 217 aprint_normal("\n* sbbrz_pci at %s", pnp); 218#endif 219 aprint_normal(" bus %d", pba->pba_bus); 220 return (UNCONF); 221} 222