plb.c revision 1.15
1/* $NetBSD: plb.c,v 1.15 2010/03/18 13:47:04 kiyohara Exp $ */ 2 3/* 4 * Copyright 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38/* 39 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. All advertising materials mentioning features or use of this software 50 * must display the following acknowledgement: 51 * This product includes software developed by Christopher G. Demetriou 52 * for the NetBSD Project. 53 * 4. The name of the author may not be used to endorse or promote products 54 * derived from this software without specific prior written permission 55 * 56 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 57 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 58 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 59 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 60 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 61 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 62 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 63 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 64 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 65 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 66 */ 67 68#include <sys/cdefs.h> 69__KERNEL_RCSID(0, "$NetBSD: plb.c,v 1.15 2010/03/18 13:47:04 kiyohara Exp $"); 70 71#include "locators.h" 72#include "emac.h" 73 74#include <sys/param.h> 75#include <sys/systm.h> 76#include <sys/device.h> 77#include <sys/extent.h> 78#include <sys/malloc.h> 79 80#define _POWERPC_BUS_DMA_PRIVATE 81#include <machine/bus.h> 82 83#include <powerpc/cpu.h> 84#include <powerpc/ibm4xx/dev/malvar.h> 85#include <powerpc/ibm4xx/dev/plbvar.h> 86#include <powerpc/ibm4xx/spr.h> 87 88/* 89 * The devices that attach to the processor local bus on the 405GP CPU. 90 */ 91const struct plb_dev plb_devs [] = { 92 /* IBM 405GP */ 93 { IBM405GP, "cpu", }, 94 { IBM405GP, "ecc", }, 95 { IBM405GP, "opb", }, 96 { IBM405GP, "pchb", }, 97 98 /* IBM 405GPr */ 99 { IBM405GPR, "cpu", }, 100 { IBM405GPR, "ecc", }, 101 { IBM405GPR, "opb", }, 102 { IBM405GPR, "pchb", }, 103 104 /* AMCC 405EX / EXR */ 105 { AMCC405EX, "cpu", }, 106 { AMCC405EX, "ecc", }, 107 { AMCC405EX, "opb", }, 108 { AMCC405EX, "pchb", }, 109 110 { 0, NULL } 111}; 112 113static int plb_match(struct device *, struct cfdata *, void *); 114static void plb_attach(struct device *, struct device *, void *); 115static int plb_print(void *, const char *); 116 117CFATTACH_DECL(plb, sizeof(struct device), plb_match, plb_attach, NULL, NULL); 118 119/* 120 * "generic" DMA struct, nothing special. 121 */ 122struct powerpc_bus_dma_tag ibm4xx_default_bus_dma_tag = { 123 0, /* _bounce_thresh */ 124 _bus_dmamap_create, 125 _bus_dmamap_destroy, 126 _bus_dmamap_load, 127 _bus_dmamap_load_mbuf, 128 _bus_dmamap_load_uio, 129 _bus_dmamap_load_raw, 130 _bus_dmamap_unload, 131 _bus_dmamap_sync, 132 _bus_dmamem_alloc, 133 _bus_dmamem_free, 134 _bus_dmamem_map, 135 _bus_dmamem_unmap, 136 _bus_dmamem_mmap, 137 _bus_dma_phys_to_bus_mem_generic, 138 _bus_dma_bus_mem_to_phys_generic, 139}; 140 141/* 142 * Probe for the plb; always succeeds. 143 */ 144static int 145plb_match(struct device *parent, struct cfdata *cf, void *aux) 146{ 147 148 return 1; 149} 150 151/* 152 * Attach the processor local bus. 153 */ 154static void 155plb_attach(struct device *parent, struct device *self, void *aux) 156{ 157 struct plb_attach_args paa; 158 struct plb_dev *local_plb_devs = aux; 159 int pvr, i; 160 161 aprint_naive("\n"); 162 aprint_normal("\n"); 163 164 pvr = mfpvr() >> 16; 165 166#if NEMAC > 0 167 mal_attach(pvr); 168#endif 169 170 for (i = 0; plb_devs[i].plb_name != NULL; i++) { 171 if (plb_devs[i].plb_pvr != pvr) 172 continue; 173 174 paa.plb_name = plb_devs[i].plb_name; 175 paa.plb_dmat = &ibm4xx_default_bus_dma_tag; 176 paa.plb_irq = PLBCF_IRQ_DEFAULT; 177 178 (void) config_found_ia(self, "plb", &paa, plb_print); 179 } 180 181 while (local_plb_devs && local_plb_devs->plb_name != NULL) { 182 if (plb_devs[i].plb_pvr != pvr) 183 continue; 184 185 paa.plb_name = local_plb_devs->plb_name; 186 paa.plb_dmat = &ibm4xx_default_bus_dma_tag; 187 paa.plb_irq = PLBCF_IRQ_DEFAULT; 188 189 (void) config_found_ia(self, "plb", &paa, plb_print); 190 local_plb_devs++; 191 } 192} 193 194static int 195plb_print(void *aux, const char *pnp) 196{ 197 struct plb_attach_args *paa = aux; 198 199 if (pnp) 200 aprint_normal("%s at %s", paa->plb_name, pnp); 201 if (paa->plb_irq != PLBCF_IRQ_DEFAULT) 202 aprint_normal(" irq %d", paa->plb_irq); 203 204 return UNCONF; 205} 206