mcbus.c revision 1.6
1 /* $NetBSD: mcbus.c,v 1.6 1999/04/15 22:19:52 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1998 by Matthew Jacob 5 * NASA AMES Research Center. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice immediately at the beginning of the file, without modification, 13 * 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. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 24 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 /* 34 * Autoconfiguration routines for the MCBUS system 35 * bus found on AlphaServer 4100 systems. 36 */ 37 38 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 39 40 __KERNEL_RCSID(0, "$NetBSD: mcbus.c,v 1.6 1999/04/15 22:19:52 thorpej Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 #include <sys/malloc.h> 46 47 #include <machine/autoconf.h> 48 #include <machine/rpb.h> 49 #include <machine/pte.h> 50 51 #include <alpha/mcbus/mcbusreg.h> 52 #include <alpha/mcbus/mcbusvar.h> 53 54 #include "locators.h" 55 56 #define KV(_addr) ((caddr_t)ALPHA_PHYS_TO_K0SEG((_addr))) 57 58 extern struct cfdriver mcbus_cd; 59 60 struct mcbus_cpu_busdep mcbus_primary; 61 62 static int mcbusmatch __P((struct device *, struct cfdata *, void *)); 63 static void mcbusattach __P((struct device *, struct device *, void *)); 64 static int mcbusprint __P((void *, const char *)); 65 static int mcbussubmatch __P((struct device *, struct cfdata *, void *)); 66 static char *mcbus_node_type_str __P((u_int8_t)); 67 68 typedef struct { 69 struct device mcbus_dev; 70 u_int8_t mcbus_types[MCBUS_MID_MAX]; 71 } mcbus_softc_t; 72 73 struct cfattach mcbus_ca = { 74 sizeof (mcbus_softc_t), mcbusmatch, mcbusattach 75 }; 76 77 /* 78 * Tru64 UNIX (formerly Digital UNIX (formerly DEC OSF/1)) probes for MCPCIAs 79 * in the following order: 80 * 81 * 5, 4, 7, 6 82 * 83 * This is so that the built-in CD-ROM on the internal 53c810 is always 84 * dka500. We probe them in the same order, for consistency. 85 */ 86 const int mcbus_mcpcia_probe_order[] = { 5, 4, 7, 6 }; 87 88 extern void mcpcia_config_cleanup __P((void)); 89 90 static int 91 mcbusprint(aux, cp) 92 void *aux; 93 const char *cp; 94 { 95 struct mcbus_dev_attach_args *tap = aux; 96 printf(" mid %d: %s", tap->ma_mid, mcbus_node_type_str(tap->ma_type)); 97 return (UNCONF); 98 } 99 100 static int 101 mcbussubmatch(parent, cf, aux) 102 struct device *parent; 103 struct cfdata *cf; 104 void *aux; 105 { 106 struct mcbus_dev_attach_args *tap = aux; 107 if (tap->ma_name != mcbus_cd.cd_name) 108 return (0); 109 if (cf->cf_loc[MCBUSCF_MID] != MCBUSCF_MID_DEFAULT && 110 cf->cf_loc[MCBUSCF_MID] != tap->ma_mid) 111 return (0); 112 return ((*cf->cf_attach->ca_match)(parent, cf, aux)); 113 } 114 115 static int 116 mcbusmatch(parent, cf, aux) 117 struct device *parent; 118 struct cfdata *cf; 119 void *aux; 120 { 121 struct mainbus_attach_args *ma = aux; 122 123 /* Make sure we're looking for a MCBUS. */ 124 if (strcmp(ma->ma_name, mcbus_cd.cd_name) != 0) 125 return (0); 126 127 /* 128 * Only available on 4100 processor type platforms. 129 */ 130 if (cputype != ST_DEC_4100) 131 return (0); 132 return (1); 133 } 134 135 static void 136 mcbusattach(parent, self, aux) 137 struct device *parent; 138 struct device *self; 139 void *aux; 140 { 141 static const char *bcs[8] = { 142 "(no bcache)", "1MB BCache", "2MB BCache", "4MB BCache", 143 "??(4)??", "??(5)??", "??(6)??", "??(7)??" 144 }; 145 struct mcbus_dev_attach_args ta; 146 mcbus_softc_t *mbp = (mcbus_softc_t *)self; 147 int i, mid; 148 149 printf("\n"); 150 151 mbp->mcbus_types[0] = MCBUS_TYPE_RES; 152 for (mid = 1; mid <= MCBUS_MID_MAX; ++mid) { 153 mbp->mcbus_types[mid] = MCBUS_TYPE_UNK; 154 } 155 156 /* 157 * Find and "configure" memory. 158 */ 159 ta.ma_name = mcbus_cd.cd_name; 160 /* 161 * XXX If we ever support more than one MCBUS, we'll 162 * XXX have to probe for them, and map them to unit 163 * XXX numbers. 164 */ 165 ta.ma_gid = MCBUS_GID_FROM_INSTANCE(0); 166 ta.ma_mid = 1; 167 ta.ma_type = MCBUS_TYPE_MEM; 168 mbp->mcbus_types[1] = MCBUS_TYPE_MEM; 169 (void) config_found_sm(self, &ta, mcbusprint, mcbussubmatch); 170 171 /* 172 * Now find PCI busses. 173 */ 174 for (i = 0; i < MCPCIA_PER_MCBUS; i++) { 175 mid = mcbus_mcpcia_probe_order[i]; 176 ta.ma_name = mcbus_cd.cd_name; 177 /* 178 * XXX If we ever support more than one MCBUS, we'll 179 * XXX have to probe for them, and map them to unit 180 * XXX numbers. 181 */ 182 ta.ma_gid = MCBUS_GID_FROM_INSTANCE(0); 183 ta.ma_mid = mid; 184 ta.ma_type = MCBUS_TYPE_PCI; 185 /* 186 * XXX MUST ACTUALLY PROBE FOR MCPCIA! 187 */ 188 (void) config_found_sm(self, &ta, mcbusprint, mcbussubmatch); 189 } 190 191 /* 192 * Deal with hooking CPU instances to MCBUS module ids. 193 * 194 * Note that we do this here because it's the read of 195 * stupid MCPCIA WHOAMI register that can get us the 196 * module ID and type of the configuring CPU. 197 */ 198 199 if (mcbus_primary.mcbus_valid) { 200 mid = mcbus_primary.mcbus_cpu_mid; 201 printf("%s mid %d: %s %s\n", self->dv_xname, 202 mid, mcbus_node_type_str(MCBUS_TYPE_CPU), 203 bcs[mcbus_primary.mcbus_bcache & 0x7]); 204 #if 0 205 ta.ma_name = mcbus_cd.cd_name; 206 /* 207 * XXX If we ever support more than one MCBUS, we'll 208 * XXX have to probe for them, and map them to unit 209 * XXX numbers. 210 */ 211 ta.ma_gid = MCBUS_GID_FROM_INSTANCE(0); 212 ta.ma_mid = mid; 213 ta.ma_type = MCBUS_TYPE_CPU; 214 mbp->mcbus_types[mid] = MCBUS_TYPE_CPU; 215 (void) config_found_sm(self, &ta, mcbusprint, mcbussubmatch); 216 #endif 217 } 218 219 /* 220 * Now clean up after configuring everything. 221 * 222 * This is an unfortunate layering violation- but 223 * we can't enable interrupts until *all* probing 224 * is done, but the code and knowledge to clean 225 * up after probing and to enable interrupts is 226 * down in the MCPCIA layer. 227 */ 228 mcpcia_config_cleanup(); 229 } 230 231 static char * 232 mcbus_node_type_str(type) 233 u_int8_t type; 234 { 235 switch (type) { 236 case MCBUS_TYPE_RES: 237 panic ("RESERVED TYPE IN MCBUS_NODE_TYPE_STR"); 238 break; 239 case MCBUS_TYPE_UNK: 240 panic ("UNKNOWN TYPE IN MCBUS_NODE_TYPE_STR"); 241 break; 242 case MCBUS_TYPE_MEM: 243 return ("Memory"); 244 case MCBUS_TYPE_CPU: 245 return ("CPU"); 246 case MCBUS_TYPE_PCI: 247 return ("PCI Bridge"); 248 default: 249 panic("REALLY UNKNWON (%x) TYPE IN MCBUS_NODE_TYPE_STR", type); 250 break; 251 } 252 } 253
Indexes created Mon Sep 29 21:09:56 GMT 2025