apecs.c revision 1.29
1/* $NetBSD: apecs.c,v 1.29 1998/01/17 03:39:51 thorpej Exp $ */ 2 3/* 4 * Copyright (c) 1995, 1996 Carnegie-Mellon University. 5 * All rights reserved. 6 * 7 * Author: Chris G. Demetriou 8 * 9 * Permission to use, copy, modify and distribute this software and 10 * its documentation is hereby granted, provided that both the copyright 11 * notice and this permission notice appear in all copies of the 12 * software, derivative works or modified versions, and any portions 13 * thereof, and that both notices appear in supporting documentation. 14 * 15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 16 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 18 * 19 * Carnegie Mellon requests users of this software to return to 20 * 21 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 22 * School of Computer Science 23 * Carnegie Mellon University 24 * Pittsburgh PA 15213-3890 25 * 26 * any improvements or extensions that they make and grant Carnegie the 27 * rights to redistribute these changes. 28 */ 29 30#include "opt_dec_2100_a50.h" 31#include "opt_dec_eb64plus.h" 32 33#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 34 35__KERNEL_RCSID(0, "$NetBSD: apecs.c,v 1.29 1998/01/17 03:39:51 thorpej Exp $"); 36 37#include <sys/param.h> 38#include <sys/systm.h> 39#include <sys/kernel.h> 40#include <sys/malloc.h> 41#include <sys/device.h> 42#include <vm/vm.h> 43 44#include <machine/autoconf.h> 45#include <machine/rpb.h> 46 47#include <dev/isa/isareg.h> 48#include <dev/isa/isavar.h> 49 50#include <dev/pci/pcireg.h> 51#include <dev/pci/pcivar.h> 52#include <alpha/pci/apecsreg.h> 53#include <alpha/pci/apecsvar.h> 54#ifdef DEC_2100_A50 55#include <alpha/pci/pci_2100_a50.h> 56#endif 57 58int apecsmatch __P((struct device *, struct cfdata *, void *)); 59void apecsattach __P((struct device *, struct device *, void *)); 60 61struct cfattach apecs_ca = { 62 sizeof(struct apecs_softc), apecsmatch, apecsattach, 63}; 64 65extern struct cfdriver apecs_cd; 66 67static int apecsprint __P((void *, const char *pnp)); 68 69/* There can be only one. */ 70int apecsfound; 71struct apecs_config apecs_configuration; 72 73int 74apecsmatch(parent, match, aux) 75 struct device *parent; 76 struct cfdata *match; 77 void *aux; 78{ 79 struct confargs *ca = aux; 80 81 /* Make sure that we're looking for an APECS. */ 82 if (strcmp(ca->ca_name, apecs_cd.cd_name) != 0) 83 return (0); 84 85 if (apecsfound) 86 return (0); 87 88 return (1); 89} 90 91/* 92 * Set up the chipset's function pointers. 93 */ 94void 95apecs_init(acp, mallocsafe) 96 struct apecs_config *acp; 97 int mallocsafe; 98{ 99 acp->ac_comanche_pass2 = 100 (REGVAL(COMANCHE_ED) & COMANCHE_ED_PASS2) != 0; 101 acp->ac_memwidth = 102 (REGVAL(COMANCHE_GCR) & COMANCHE_GCR_WIDEMEM) != 0 ? 128 : 64; 103 acp->ac_epic_pass2 = 104 (REGVAL(EPIC_DCSR) & EPIC_DCSR_PASS2) != 0; 105 106 acp->ac_haxr1 = REGVAL(EPIC_HAXR1); 107 acp->ac_haxr2 = REGVAL(EPIC_HAXR2); 108 109 if (!acp->ac_initted) { 110 /* don't do these twice since they set up extents */ 111 apecs_bus_io_init(&acp->ac_iot, acp); 112 apecs_bus_mem_init(&acp->ac_memt, acp); 113 } 114 acp->ac_mallocsafe = mallocsafe; 115 116 apecs_pci_init(&acp->ac_pc, acp); 117 118 apecs_dma_init(acp); 119 120 acp->ac_initted = 1; 121} 122 123void 124apecsattach(parent, self, aux) 125 struct device *parent, *self; 126 void *aux; 127{ 128 struct apecs_softc *sc = (struct apecs_softc *)self; 129 struct apecs_config *acp; 130 struct pcibus_attach_args pba; 131 132 /* note that we've attached the chipset; can't have 2 APECSes. */ 133 apecsfound = 1; 134 135 /* 136 * set up the chipset's info; done once at console init time 137 * (maybe), but doesn't hurt to do twice. 138 */ 139 acp = sc->sc_acp = &apecs_configuration; 140 apecs_init(acp, 1); 141 142 /* XXX SGMAP FOO */ 143 144 printf(": DECchip %s Core Logic chipset\n", 145 acp->ac_memwidth == 128 ? "21072" : "21071"); 146 printf("%s: DC21071-CA pass %d, %d-bit memory bus\n", 147 self->dv_xname, acp->ac_comanche_pass2 ? 2 : 1, acp->ac_memwidth); 148 printf("%s: DC21071-DA pass %d\n", self->dv_xname, 149 acp->ac_epic_pass2 ? 2 : 1); 150 /* XXX print bcache size */ 151 152 if (!acp->ac_epic_pass2) 153 printf("WARNING: 21071-DA NOT PASS2... NO BETS...\n"); 154 155 switch (hwrpb->rpb_type) { 156#ifdef DEC_2100_A50 157 case ST_DEC_2100_A50: 158 pci_2100_a50_pickintr(acp); 159 break; 160#endif 161 162 default: 163 panic("apecsattach: shouldn't be here, really..."); 164 } 165 166 pba.pba_busname = "pci"; 167 pba.pba_iot = &acp->ac_iot; 168 pba.pba_memt = &acp->ac_memt; 169 pba.pba_dmat = 170 alphabus_dma_get_tag(&acp->ac_dmat_direct, ALPHA_BUS_PCI); 171 pba.pba_pc = &acp->ac_pc; 172 pba.pba_bus = 0; 173 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED; 174 config_found(self, &pba, apecsprint); 175} 176 177static int 178apecsprint(aux, pnp) 179 void *aux; 180 const char *pnp; 181{ 182 register struct pcibus_attach_args *pba = aux; 183 184 /* only PCIs can attach to APECSes; easy. */ 185 if (pnp) 186 printf("%s at %s", pba->pba_busname, pnp); 187 printf(" bus %d", pba->pba_bus); 188 return (UNCONF); 189} 190