plb.c revision 1.17
1/* $NetBSD: plb.c,v 1.17 2010/11/09 06:48:19 uebayasi 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 1.17 2010/11/09 06:48:19 uebayasi 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 { IBM405GPR, "exb", }, 104 105 /* AMCC 405EX / EXR */ 106 { AMCC405EX, "cpu", }, 107 { AMCC405EX, "ecc", }, 108 { AMCC405EX, "opb", }, 109 { AMCC405EX, "pchb", }, 110 111 { 0, NULL } 112}; 113 114static int plb_match(struct device *, struct cfdata *, void *); 115static void plb_attach(struct device *, struct device *, void *); 116static int plb_print(void *, const char *); 117 118CFATTACH_DECL(plb, sizeof(struct device), plb_match, plb_attach, NULL, NULL); 119 120/* 121 * "generic" DMA struct, nothing special. 122 */ 123struct powerpc_bus_dma_tag ibm4xx_default_bus_dma_tag = { 124 0, /* _bounce_thresh */ 125 _bus_dmamap_create, 126 _bus_dmamap_destroy, 127 _bus_dmamap_load, 128 _bus_dmamap_load_mbuf, 129 _bus_dmamap_load_uio, 130 _bus_dmamap_load_raw, 131 _bus_dmamap_unload, 132 _bus_dmamap_sync, 133 _bus_dmamem_alloc, 134 _bus_dmamem_free, 135 _bus_dmamem_map, 136 _bus_dmamem_unmap, 137 _bus_dmamem_mmap, 138 _bus_dma_phys_to_bus_mem_generic, 139 _bus_dma_bus_mem_to_phys_generic, 140}; 141 142/* 143 * Probe for the plb; always succeeds. 144 */ 145static int 146plb_match(struct device *parent, struct cfdata *cf, void *aux) 147{ 148 149 return 1; 150} 151 152/* 153 * Attach the processor local bus. 154 */ 155static void 156plb_attach(struct device *parent, struct device *self, void *aux) 157{ 158 struct plb_attach_args paa; 159 struct plb_dev *local_plb_devs = aux; 160 int pvr, i; 161 162 aprint_naive("\n"); 163 aprint_normal("\n"); 164 165 pvr = mfpvr() >> 16; 166 167#if NEMAC > 0 168 mal_attach(pvr); 169#endif 170 171 for (i = 0; plb_devs[i].plb_name != NULL; i++) { 172 if (plb_devs[i].plb_pvr != pvr) 173 continue; 174 175 paa.plb_name = plb_devs[i].plb_name; 176 paa.plb_dmat = &ibm4xx_default_bus_dma_tag; 177 paa.plb_irq = PLBCF_IRQ_DEFAULT; 178 179 (void) config_found_ia(self, "plb", &paa, plb_print); 180 } 181 182 while (local_plb_devs && local_plb_devs->plb_name != NULL) { 183 if (plb_devs[i].plb_pvr != pvr) 184 continue; 185 186 paa.plb_name = local_plb_devs->plb_name; 187 paa.plb_dmat = &ibm4xx_default_bus_dma_tag; 188 paa.plb_irq = PLBCF_IRQ_DEFAULT; 189 190 (void) config_found_ia(self, "plb", &paa, plb_print); 191 local_plb_devs++; 192 } 193} 194 195static int 196plb_print(void *aux, const char *pnp) 197{ 198 struct plb_attach_args *paa = aux; 199 200 if (pnp) 201 aprint_normal("%s at %s", paa->plb_name, pnp); 202 if (paa->plb_irq != PLBCF_IRQ_DEFAULT) 203 aprint_normal(" irq %d", paa->plb_irq); 204 205 return UNCONF; 206} 207