mcpcia.c revision 1.22
1 /* $NetBSD: mcpcia.c,v 1.22 2008/06/12 12:09:23 dogcow Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1998 by Matthew Jacob 35 * NASA AMES Research Center. 36 * All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice immediately at the beginning of the file, without modification, 43 * this list of conditions, and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. The name of the author may not be used to endorse or promote products 48 * derived from this software without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 53 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 54 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 60 * SUCH DAMAGE. 61 */ 62 63 /* 64 * MCPCIA mcbus to PCI bus adapter 65 * found on AlphaServer 4100 systems. 66 */ 67 68 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 69 70 __KERNEL_RCSID(0, "$NetBSD: mcpcia.c,v 1.22 2008/06/12 12:09:23 dogcow Exp $"); 71 72 #include <sys/param.h> 73 #include <sys/systm.h> 74 #include <sys/device.h> 75 #include <sys/malloc.h> 76 77 #include <machine/autoconf.h> 78 #include <machine/rpb.h> 79 #include <machine/sysarch.h> 80 81 #include <alpha/mcbus/mcbusreg.h> 82 #include <alpha/mcbus/mcbusvar.h> 83 #include <alpha/pci/mcpciareg.h> 84 #include <alpha/pci/mcpciavar.h> 85 #include <alpha/pci/pci_kn300.h> 86 87 #define KV(_addr) ((void *)ALPHA_PHYS_TO_K0SEG((_addr))) 88 #define MCPCIA_SYSBASE(mc) \ 89 ((((unsigned long) (mc)->cc_gid) << MCBUS_GID_SHIFT) | \ 90 (((unsigned long) (mc)->cc_mid) << MCBUS_MID_SHIFT) | \ 91 (MCBUS_IOSPACE)) 92 93 #define MCPCIA_PROBE(mid, gid) \ 94 badaddr((void *)KV(((((unsigned long) gid) << MCBUS_GID_SHIFT) | \ 95 (((unsigned long) mid) << MCBUS_MID_SHIFT) | \ 96 (MCBUS_IOSPACE) | MCPCIA_PCI_BRIDGE | _MCPCIA_PCI_REV)), \ 97 sizeof(u_int32_t)) 98 99 static int mcpciamatch __P((struct device *, struct cfdata *, void *)); 100 static void mcpciaattach __P((struct device *, struct device *, void *)); 101 CFATTACH_DECL(mcpcia, sizeof(struct mcpcia_softc), 102 mcpciamatch, mcpciaattach, NULL, NULL); 103 104 void mcpcia_init0 __P((struct mcpcia_config *, int)); 105 106 /* 107 * We have one statically-allocated mcpcia_config structure; this is 108 * the one used for the console (which, coincidentally, is the only 109 * MCPCIA with an EISA adapter attached to it). 110 */ 111 struct mcpcia_config mcpcia_console_configuration; 112 113 int mcpcia_bus_get_window __P((int, int, 114 struct alpha_bus_space_translation *abst)); 115 116 static int 117 mcpciamatch(parent, cf, aux) 118 struct device *parent; 119 struct cfdata *cf; 120 void *aux; 121 { 122 struct mcbus_dev_attach_args *ma = aux; 123 if (ma->ma_type == MCBUS_TYPE_PCI) 124 return (1); 125 return (0); 126 } 127 128 static void 129 mcpciaattach(parent, self, aux) 130 struct device *parent; 131 struct device *self; 132 void *aux; 133 { 134 static int first = 1; 135 struct mcbus_dev_attach_args *ma = aux; 136 struct mcpcia_softc *mcp = (struct mcpcia_softc *)self; 137 struct mcpcia_config *ccp; 138 struct pcibus_attach_args pba; 139 u_int32_t ctl; 140 141 /* 142 * Make sure this MCPCIA exists... 143 */ 144 if (MCPCIA_PROBE(ma->ma_mid, ma->ma_gid)) { 145 mcp->mcpcia_cc = NULL; 146 printf(" (not present)\n"); 147 return; 148 } 149 printf("\n"); 150 151 /* 152 * Determine if we're the console's MCPCIA. 153 */ 154 if (ma->ma_mid == mcpcia_console_configuration.cc_mid && 155 ma->ma_gid == mcpcia_console_configuration.cc_gid) 156 ccp = &mcpcia_console_configuration; 157 else { 158 ccp = malloc(sizeof(struct mcpcia_config), M_DEVBUF, M_WAITOK); 159 memset(ccp, 0, sizeof(struct mcpcia_config)); 160 161 ccp->cc_mid = ma->ma_mid; 162 ccp->cc_gid = ma->ma_gid; 163 } 164 165 mcp->mcpcia_cc = ccp; 166 ccp->cc_sc = mcp; 167 168 /* This initializes cc_sysbase so we can do register access. */ 169 mcpcia_init0(ccp, 1); 170 171 ctl = REGVAL(MCPCIA_PCI_REV(ccp)); 172 printf("%s: Horse Revision %d, %s Handed Saddle Revision %d," 173 " CAP Revision %d\n", mcp->mcpcia_dev.dv_xname, HORSE_REV(ctl), 174 (SADDLE_TYPE(ctl) & 1)? "Right": "Left", SADDLE_REV(ctl), 175 CAP_REV(ctl)); 176 177 mcpcia_dma_init(ccp); 178 179 /* 180 * Set up interrupts 181 */ 182 pci_kn300_pickintr(ccp, first); 183 first = 0; 184 185 /* 186 * Attach PCI bus 187 */ 188 pba.pba_iot = &ccp->cc_iot; 189 pba.pba_memt = &ccp->cc_memt; 190 pba.pba_dmat = /* start with direct, may change... */ 191 alphabus_dma_get_tag(&ccp->cc_dmat_direct, ALPHA_BUS_PCI); 192 pba.pba_dmat64 = NULL; 193 pba.pba_pc = &ccp->cc_pc; 194 pba.pba_bus = 0; 195 pba.pba_bridgetag = NULL; 196 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED | 197 PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY; 198 (void) config_found_ia(self, "pcibus", &pba, pcibusprint); 199 200 /* 201 * Clear any errors that may have occurred during the probe 202 * sequence. 203 */ 204 REGVAL(MCPCIA_CAP_ERR(ccp)) = 0xFFFFFFFF; 205 alpha_mb(); 206 } 207 208 void 209 mcpcia_init() 210 { 211 struct mcpcia_config *ccp = &mcpcia_console_configuration; 212 int i; 213 214 /* 215 * Look for all of the MCPCIAs on the system. One of them 216 * will have an EISA attached to it. This MCPCIA is the 217 * only one that can be used for the console. Once we find 218 * that one, initialize it. 219 */ 220 221 for (i = 0; i < MCPCIA_PER_MCBUS; i++) { 222 ccp->cc_mid = mcbus_mcpcia_probe_order[i]; 223 /* 224 * XXX If we ever support more than one MCBUS, we'll 225 * XXX have to probe for them, and map them to unit 226 * XXX numbers. 227 */ 228 ccp->cc_gid = MCBUS_GID_FROM_INSTANCE(0); 229 ccp->cc_sysbase = MCPCIA_SYSBASE(ccp); 230 231 if (badaddr((void *)ALPHA_PHYS_TO_K0SEG(MCPCIA_PCI_REV(ccp)), 232 sizeof(u_int32_t))) 233 continue; 234 235 if (EISA_PRESENT(REGVAL(MCPCIA_PCI_REV(ccp)))) { 236 mcpcia_init0(ccp, 0); 237 238 alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_IO] = 2; 239 alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_MEM] = 3; 240 241 alpha_bus_get_window = mcpcia_bus_get_window; 242 return; 243 } 244 } 245 246 panic("mcpcia_init: unable to find EISA bus"); 247 } 248 249 void 250 mcpcia_init0(ccp, mallocsafe) 251 struct mcpcia_config *ccp; 252 int mallocsafe; 253 { 254 u_int32_t ctl; 255 256 if (ccp->cc_initted == 0) { 257 /* don't do these twice since they set up extents */ 258 mcpcia_bus_io_init(&ccp->cc_iot, ccp); 259 mcpcia_bus_mem_init(&ccp->cc_memt, ccp); 260 } 261 ccp->cc_mallocsafe = mallocsafe; 262 263 mcpcia_pci_init(&ccp->cc_pc, ccp); 264 265 /* 266 * Establish a precalculated base for convenience's sake. 267 */ 268 ccp->cc_sysbase = MCPCIA_SYSBASE(ccp); 269 270 /* 271 * Disable interrupts and clear errors prior to probing 272 */ 273 REGVAL(MCPCIA_INT_MASK0(ccp)) = 0; 274 REGVAL(MCPCIA_INT_MASK1(ccp)) = 0; 275 REGVAL(MCPCIA_CAP_ERR(ccp)) = 0xFFFFFFFF; 276 alpha_mb(); 277 278 if (ccp == &mcpcia_console_configuration) { 279 /* 280 * Use this opportunity to also find out the MID and CPU 281 * type of the currently running CPU (that's us, billybob....) 282 */ 283 ctl = REGVAL(MCPCIA_WHOAMI(ccp)); 284 mcbus_primary.mcbus_cpu_mid = MCBUS_CPU_MID(ctl); 285 if ((MCBUS_CPU_INFO(ctl) & CPU_Fill_Err) == 0 && 286 mcbus_primary.mcbus_valid == 0) { 287 mcbus_primary.mcbus_bcache = 288 MCBUS_CPU_INFO(ctl) & CPU_BCacheMask; 289 mcbus_primary.mcbus_valid = 1; 290 } 291 alpha_mb(); 292 } 293 294 ccp->cc_initted = 1; 295 } 296 297 #ifdef TEST_PROBE_DEATH 298 static void 299 die_heathen_dog(arg) 300 void *arg; 301 { 302 struct mcpcia_config *ccp = arg; 303 304 /* this causes a fatal machine check (0x670) */ 305 REGVAL(MCPCIA_CAP_DIAG(ccp)) |= CAP_DIAG_MC_ADRPE; 306 } 307 #endif 308 309 void 310 mcpcia_config_cleanup() 311 { 312 volatile u_int32_t ctl; 313 struct mcpcia_softc *mcp; 314 struct mcpcia_config *ccp; 315 int i; 316 extern struct cfdriver mcpcia_cd; 317 318 /* 319 * Turn on Hard, Soft error interrupts. Maybe i2c too. 320 */ 321 for (i = 0; i < mcpcia_cd.cd_ndevs; i++) { 322 if ((mcp = device_lookup_private(&mcpcia_cd, i)) == NULL) 323 continue; 324 325 ccp = mcp->mcpcia_cc; 326 if (ccp == NULL) 327 continue; 328 329 ctl = REGVAL(MCPCIA_INT_MASK0(ccp)); 330 ctl |= MCPCIA_GEN_IENABL; 331 REGVAL(MCPCIA_INT_MASK0(ccp)) = ctl; 332 alpha_mb(); 333 334 /* force stall while write completes */ 335 ctl = REGVAL(MCPCIA_INT_MASK0(ccp)); 336 } 337 #ifdef TEST_PROBE_DEATH 338 (void) timeout (die_heathen_dog, &mcpcia_console_configuration, 339 30 * hz); 340 #endif 341 } 342 343 int 344 mcpcia_bus_get_window(type, window, abst) 345 int type, window; 346 struct alpha_bus_space_translation *abst; 347 { 348 struct mcpcia_config *ccp = &mcpcia_console_configuration; 349 bus_space_tag_t st; 350 351 switch (type) { 352 case ALPHA_BUS_TYPE_PCI_IO: 353 st = &ccp->cc_iot; 354 break; 355 356 case ALPHA_BUS_TYPE_PCI_MEM: 357 st = &ccp->cc_memt; 358 break; 359 360 default: 361 panic("mcpcia_bus_get_window"); 362 } 363 364 return (alpha_bus_space_get_window(st, window, abst)); 365 } 366
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