cia.c revision 1.21.4.1
1 /* $NetBSD: cia.c,v 1.21.4.1 1997/08/23 07:06:58 thorpej Exp $ */ 2 3 /* 4 * Copyright Notice: 5 * 6 * Copyright (c) 1997 Christopher G. Demetriou. All rights reserved. 7 * 8 * License: 9 * 10 * This License applies to this software ("Software"), created 11 * by Christopher G. Demetriou ("Author"). 12 * 13 * You may use, copy, modify and redistribute this Software without 14 * charge, in either source code form, binary form, or both, on the 15 * following conditions: 16 * 17 * 1. (a) Binary code: (i) a complete copy of the above copyright notice 18 * must be included within each copy of the Software in binary code form, 19 * and (ii) a complete copy of the above copyright notice and all terms 20 * of this License as presented here must be included within each copy of 21 * all documentation accompanying or associated with binary code, in any 22 * medium, along with a list of the software modules to which the license 23 * applies. 24 * 25 * (b) Source Code: A complete copy of the above copyright notice and all 26 * terms of this License as presented here must be included within: (i) 27 * each copy of the Software in source code form, and (ii) each copy of 28 * all accompanying or associated documentation, in any medium. 29 * 30 * 2. The following Acknowledgment must be used in communications 31 * involving the Software as described below: 32 * 33 * This product includes software developed by 34 * Christopher G. Demetriou for the NetBSD Project. 35 * 36 * The Acknowledgment must be conspicuously and completely displayed 37 * whenever the Software, or any software, products or systems containing 38 * the Software, are mentioned in advertising, marketing, informational 39 * or publicity materials of any kind, whether in print, electronic or 40 * other media (except for information provided to support use of 41 * products containing the Software by existing users or customers). 42 * 43 * 3. The name of the Author may not be used to endorse or promote 44 * products derived from this Software without specific prior written 45 * permission (conditions (1) and (2) above are not considered 46 * endorsement or promotion). 47 * 48 * 4. This license applies to: (a) all copies of the Software, whether 49 * partial or whole, original or modified, and (b) your actions, and the 50 * actions of all those who may act on your behalf. All uses not 51 * expressly permitted are reserved to the Author. 52 * 53 * 5. Disclaimer. THIS SOFTWARE IS MADE AVAILABLE BY THE AUTHOR TO THE 54 * PUBLIC FOR FREE AND "AS IS.'' ALL USERS OF THIS FREE SOFTWARE ARE 55 * SOLELY AND ENTIRELY RESPONSIBLE FOR THEIR OWN CHOICE AND USE OF THIS 56 * SOFTWARE FOR THEIR OWN PURPOSES. BY USING THIS SOFTWARE, EACH USER 57 * AGREES THAT THE AUTHOR SHALL NOT BE LIABLE FOR DAMAGES OF ANY KIND IN 58 * RELATION TO ITS USE OR PERFORMANCE. 59 * 60 * 6. If you have a special need for a change in one or more of these 61 * license conditions, please contact the Author via electronic mail to 62 * 63 * cgd (at) NetBSD.ORG 64 * 65 * or via the contact information on 66 * 67 * http://www.NetBSD.ORG/People/Pages/cgd.html 68 */ 69 70 /* 71 * Copyright (c) 1995, 1996 Carnegie-Mellon University. 72 * All rights reserved. 73 * 74 * Author: Chris G. Demetriou 75 * 76 * Permission to use, copy, modify and distribute this software and 77 * its documentation is hereby granted, provided that both the copyright 78 * notice and this permission notice appear in all copies of the 79 * software, derivative works or modified versions, and any portions 80 * thereof, and that both notices appear in supporting documentation. 81 * 82 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 83 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 84 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 85 * 86 * Carnegie Mellon requests users of this software to return to 87 * 88 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 89 * School of Computer Science 90 * Carnegie Mellon University 91 * Pittsburgh PA 15213-3890 92 * 93 * any improvements or extensions that they make and grant Carnegie the 94 * rights to redistribute these changes. 95 */ 96 97 #include <machine/options.h> /* Config options headers */ 98 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 99 100 __KERNEL_RCSID(0, "$NetBSD: cia.c,v 1.21.4.1 1997/08/23 07:06:58 thorpej Exp $"); 101 __KERNEL_COPYRIGHT(0, 102 "Copyright (c) 1997 Christopher G. Demetriou. All rights reserved."); 103 104 #include <sys/param.h> 105 #include <sys/systm.h> 106 #include <sys/kernel.h> 107 #include <sys/malloc.h> 108 #include <sys/device.h> 109 #include <vm/vm.h> 110 111 #include <machine/autoconf.h> 112 #include <machine/rpb.h> 113 114 #include <dev/isa/isareg.h> 115 #include <dev/isa/isavar.h> 116 117 #include <dev/pci/pcireg.h> 118 #include <dev/pci/pcivar.h> 119 #include <alpha/pci/ciareg.h> 120 #include <alpha/pci/ciavar.h> 121 #ifdef DEC_KN20AA 122 #include <alpha/pci/pci_kn20aa.h> 123 #endif 124 #ifdef DEC_EB164 125 #include <alpha/pci/pci_eb164.h> 126 #endif 127 128 int ciamatch __P((struct device *, struct cfdata *, void *)); 129 void ciaattach __P((struct device *, struct device *, void *)); 130 131 struct cfattach cia_ca = { 132 sizeof(struct cia_softc), ciamatch, ciaattach, 133 }; 134 135 struct cfdriver cia_cd = { 136 NULL, "cia", DV_DULL, 137 }; 138 139 static int ciaprint __P((void *, const char *pnp)); 140 141 /* There can be only one. */ 142 int ciafound; 143 struct cia_config cia_configuration; 144 145 int 146 ciamatch(parent, match, aux) 147 struct device *parent; 148 struct cfdata *match; 149 void *aux; 150 { 151 struct confargs *ca = aux; 152 153 /* Make sure that we're looking for a CIA. */ 154 if (strcmp(ca->ca_name, cia_cd.cd_name) != 0) 155 return (0); 156 157 if (ciafound) 158 return (0); 159 160 return (1); 161 } 162 163 /* 164 * Set up the chipset's function pointers. 165 */ 166 void 167 cia_init(ccp, mallocsafe) 168 struct cia_config *ccp; 169 int mallocsafe; 170 { 171 172 ccp->cc_pass = 173 (REGVAL(CIA_CSR_CIA_REV) & CIA_REV_REV_MASK) >> CIA_REV_REV_SHIFT; 174 ccp->cc_is21172 = (ccp->cc_pass >= 3); 175 ccp->cc_bwx_enabled = ccp->cc_is21172 && 176 (REGVAL(CIA_CSR_CIA_CNFG) & CIA_CNFG_IOA_BWEN); 177 178 ccp->cc_hae_mem = REGVAL(CIA_CSR_HAE_MEM); 179 ccp->cc_hae_io = REGVAL(CIA_CSR_HAE_IO); 180 181 if (!ccp->cc_initted) { 182 /* don't do these twice since they set up extents */ 183 ccp->cc_iot = cia_swiz_bus_io_init(ccp); 184 ccp->cc_memt = cia_swiz_bus_mem_init(ccp); 185 cia_swiz_pci_init(&ccp->cc_pc, ccp); /* no ext. yet */ 186 } 187 ccp->cc_mallocsafe = mallocsafe; 188 189 cia_dma_init(ccp); 190 191 ccp->cc_initted = 1; 192 } 193 194 void 195 ciaattach(parent, self, aux) 196 struct device *parent, *self; 197 void *aux; 198 { 199 struct cia_softc *sc = (struct cia_softc *)self; 200 struct cia_config *ccp; 201 struct pcibus_attach_args pba; 202 203 /* note that we've attached the chipset; can't have 2 CIAs. */ 204 ciafound = 1; 205 206 /* 207 * set up the chipset's info; done once at console init time 208 * (maybe), but we must do it here as well to take care of things 209 * that need to use memory allocation. 210 */ 211 ccp = sc->sc_ccp = &cia_configuration; 212 cia_init(ccp, 1); 213 214 printf(": CIA pass %d (%s)", ccp->cc_pass, 215 ccp->cc_is21172 ? "21172" : "21171"); 216 if (ccp->cc_is21172) 217 printf(", BWX %sabled", ccp->cc_bwx_enabled ? "en" : "dis"); 218 printf("\n"); 219 220 switch (hwrpb->rpb_type) { 221 #ifdef DEC_KN20AA 222 case ST_DEC_KN20AA: 223 pci_kn20aa_pickintr(ccp); 224 #ifdef EVCNT_COUNTERS 225 evcnt_attach(self, "intr", &kn20aa_intr_evcnt); 226 #endif 227 break; 228 #endif 229 230 #ifdef DEC_EB164 231 case ST_EB164: 232 pci_eb164_pickintr(ccp); 233 #ifdef EVCNT_COUNTERS 234 evcnt_attach(self, "intr", &eb164_intr_evcnt); 235 #endif 236 break; 237 #endif 238 239 default: 240 panic("ciaattach: shouldn't be here, really..."); 241 } 242 243 pba.pba_busname = "pci"; 244 pba.pba_iot = ccp->cc_iot; 245 pba.pba_memt = ccp->cc_memt; 246 pba.pba_dmat = &ccp->cc_dmat_direct; 247 pba.pba_pc = &ccp->cc_pc; 248 pba.pba_bus = 0; 249 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED; 250 config_found(self, &pba, ciaprint); 251 } 252 253 static int 254 ciaprint(aux, pnp) 255 void *aux; 256 const char *pnp; 257 { 258 register struct pcibus_attach_args *pba = aux; 259 260 /* only PCIs can attach to CIAs; easy. */ 261 if (pnp) 262 printf("%s at %s", pba->pba_busname, pnp); 263 printf(" bus %d", pba->pba_bus); 264 return (UNCONF); 265 } 266
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