gio.c revision 1.37
1 /* $NetBSD: gio.c,v 1.37 2021/04/24 23:36:48 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2000 Soren S. Jorvang 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed for the 18 * NetBSD Project. See http://www.NetBSD.org/ for 19 * information about NetBSD. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: gio.c,v 1.37 2021/04/24 23:36:48 thorpej Exp $"); 37 38 #include "opt_ddb.h" 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/device.h> 43 44 #include <sys/bus.h> 45 #include <machine/machtype.h> 46 #include <machine/sysconf.h> 47 48 #include <sgimips/gio/gioreg.h> 49 #include <sgimips/gio/giovar.h> 50 #include <sgimips/gio/giodevs_data.h> 51 52 #include "locators.h" 53 #include "newport.h" 54 #include "grtwo.h" 55 #include "light.h" 56 #include "imc.h" 57 #include "pic.h" 58 59 #if (NNEWPORT > 0) 60 #include <sgimips/gio/newportvar.h> 61 #endif 62 63 #if (NGRTWO > 0) 64 #include <sgimips/gio/grtwovar.h> 65 #endif 66 67 #if (NLIGHT > 0) 68 #include <sgimips/gio/lightvar.h> 69 #endif 70 71 #if (NIMC > 0) 72 extern int imc_gio64_arb_config(int, uint32_t); 73 #endif 74 75 #if (NPIC > 0) 76 extern int pic_gio32_arb_config(int, uint32_t); 77 #endif 78 79 80 static int gio_match(device_t, cfdata_t, void *); 81 static void gio_attach(device_t, device_t, void *); 82 static int gio_print(void *, const char *); 83 static int gio_search(device_t, cfdata_t, const int *, void *); 84 static int gio_submatch(device_t, cfdata_t, const int *, void *); 85 86 CFATTACH_DECL_NEW(gio, 0, 87 gio_match, gio_attach, NULL, NULL); 88 89 struct gio_probe { 90 uint32_t slot; 91 uint32_t base; 92 uint32_t mach_type; 93 uint32_t mach_subtype; 94 }; 95 96 /* 97 * Expansion Slot Base Addresses 98 * 99 * IP12, IP20 and IP24 have two GIO connectors: GIO_SLOT_EXP0 and 100 * GIO_SLOT_EXP1. 101 * 102 * On IP24 these slots exist on the graphics board or the IOPLUS 103 * "mezzanine" on Indy and Challenge S, respectively. The IOPLUS or 104 * graphics board connects to the mainboard via a single GIO64 connector. 105 * 106 * IP22 has either three or four physical connectors, but only two 107 * electrically distinct slots: GIO_SLOT_GFX and GIO_SLOT_EXP0. 108 * 109 * It should also be noted that DMA is (mostly) not supported in Challenge 110 * S's GIO_SLOT_EXP1. See gio(4) for the story. 111 */ 112 static const struct gio_probe slot_bases[] = { 113 { GIO_SLOT_GFX, 0x1f000000, MACH_SGI_IP22, MACH_SGI_IP22_FULLHOUSE }, 114 115 { GIO_SLOT_EXP0, 0x1f400000, MACH_SGI_IP12, -1 }, 116 { GIO_SLOT_EXP0, 0x1f400000, MACH_SGI_IP20, -1 }, 117 { GIO_SLOT_EXP0, 0x1f400000, MACH_SGI_IP22, -1 }, 118 119 { GIO_SLOT_EXP1, 0x1f600000, MACH_SGI_IP12, -1 }, 120 { GIO_SLOT_EXP1, 0x1f600000, MACH_SGI_IP20, -1 }, 121 { GIO_SLOT_EXP1, 0x1f600000, MACH_SGI_IP22, MACH_SGI_IP22_GUINNESS }, 122 123 { 0, 0, 0, 0 } 124 }; 125 126 /* 127 * Graphic Board Base Addresses 128 * 129 * Graphics boards are not treated like expansion slot cards. Their base 130 * addresses do not necessarily correspond to GIO slot addresses and they 131 * do not contain product identification words. 132 */ 133 static const struct gio_probe gfx_bases[] = { 134 /* grtwo, and newport on IP22 */ 135 { -1, 0x1f000000, MACH_SGI_IP12, -1 }, 136 { -1, 0x1f000000, MACH_SGI_IP20, -1 }, 137 { -1, 0x1f000000, MACH_SGI_IP22, -1 }, 138 139 /* light */ 140 { -1, 0x1f3f0000, MACH_SGI_IP12, -1 }, 141 { -1, 0x1f3f0000, MACH_SGI_IP20, -1 }, 142 143 /* light (dual headed) */ 144 { -1, 0x1f3f8000, MACH_SGI_IP12, -1 }, 145 { -1, 0x1f3f8000, MACH_SGI_IP20, -1 }, 146 147 /* grtwo, and newport on IP22 */ 148 { -1, 0x1f400000, MACH_SGI_IP12, -1 }, 149 { -1, 0x1f400000, MACH_SGI_IP20, -1 }, 150 { -1, 0x1f400000, MACH_SGI_IP22, -1 }, 151 152 /* grtwo */ 153 { -1, 0x1f600000, MACH_SGI_IP12, -1 }, 154 { -1, 0x1f600000, MACH_SGI_IP20, -1 }, 155 { -1, 0x1f600000, MACH_SGI_IP22, -1 }, 156 157 /* newport */ 158 { -1, 0x1f800000, MACH_SGI_IP22, MACH_SGI_IP22_FULLHOUSE }, 159 160 /* newport */ 161 { -1, 0x1fc00000, MACH_SGI_IP22, MACH_SGI_IP22_FULLHOUSE }, 162 163 { 0, 0, 0, 0 } 164 }; 165 166 /* maximum number of graphics boards possible (arbitrarily large estimate) */ 167 #define MAXGFX 8 168 169 static int 170 gio_match(device_t parent, cfdata_t match, void *aux) 171 { 172 if (mach_type == MACH_SGI_IP12 || mach_type == MACH_SGI_IP20 || 173 mach_type == MACH_SGI_IP22) 174 return 1; 175 176 return 0; 177 } 178 179 static void 180 gio_attach(device_t parent, device_t self, void *aux) 181 { 182 struct gio_attach_args ga; 183 uint32_t gfx[MAXGFX]; 184 int i, j, ngfx; 185 186 printf("\n"); 187 188 ngfx = 0; 189 memset(gfx, 0, sizeof(gfx)); 190 191 /* 192 * Attach graphics devices first. They do not contain a Product 193 * Identification Word and have no slot number. 194 * 195 * Record addresses to which graphics devices attach so that 196 * we do not confuse them with expansion slots, should the 197 * addresses coincide. 198 */ 199 for (i = 0; gfx_bases[i].base != 0; i++) { 200 /* skip slots that don't apply to us */ 201 if (gfx_bases[i].mach_type != mach_type) 202 continue; 203 204 if (gfx_bases[i].mach_subtype != -1 && 205 gfx_bases[i].mach_subtype != mach_subtype) 206 continue; 207 208 ga.ga_slot = -1; 209 ga.ga_addr = gfx_bases[i].base; 210 /* XXX */ 211 if (platform.badaddr((void *)MIPS_PHYS_TO_KSEG1(ga.ga_addr), 212 sizeof(uint32_t))) 213 continue; 214 ga.ga_iot = normal_memt; 215 if (bus_space_map(normal_memt, ga.ga_addr, 0, 216 BUS_SPACE_MAP_LINEAR, &ga.ga_ioh) != 0) 217 continue; 218 ga.ga_dmat = &sgimips_default_bus_dma_tag; 219 ga.ga_product = -1; 220 221 222 if (config_found(self, &ga, gio_print, 223 CFARG_SUBMATCH, gio_submatch, 224 CFARG_EOL) != NULL) { 225 if (ngfx == MAXGFX) 226 panic("gio_attach: MAXGFX"); 227 gfx[ngfx++] = gfx_bases[i].base; 228 } 229 } 230 231 /* 232 * Now attach any GIO expansion cards. 233 * 234 * Be sure to skip any addresses to which a graphics device has 235 * already been attached. 236 */ 237 for (i = 0; slot_bases[i].base != 0; i++) { 238 bool skip = false; 239 240 /* skip slots that don't apply to us */ 241 if (slot_bases[i].mach_type != mach_type) 242 continue; 243 244 if (slot_bases[i].mach_subtype != -1 && 245 slot_bases[i].mach_subtype != mach_subtype) 246 continue; 247 248 for (j = 0; j < ngfx; j++) { 249 if (slot_bases[i].base == gfx[j]) { 250 skip = true; 251 break; 252 } 253 } 254 if (skip) 255 continue; 256 257 ga.ga_slot = slot_bases[i].slot; 258 ga.ga_addr = slot_bases[i].base; 259 /* XXX */ 260 if (platform.badaddr((void *)MIPS_PHYS_TO_KSEG1(ga.ga_addr), 261 sizeof(uint32_t))) 262 continue; 263 ga.ga_iot = normal_memt; 264 if (bus_space_map(normal_memt, ga.ga_addr, 0, 265 BUS_SPACE_MAP_LINEAR, &ga.ga_ioh) != 0) 266 continue; 267 ga.ga_dmat = &sgimips_default_bus_dma_tag; 268 269 ga.ga_product = bus_space_read_4(ga.ga_iot, ga.ga_ioh, 0); 270 271 config_found(self, &ga, gio_print, 272 CFARG_SUBMATCH, gio_submatch, 273 CFARG_EOL); 274 } 275 276 config_search(self, &ga, 277 CFARG_SEARCH, gio_search, 278 CFARG_EOL); 279 } 280 281 static int 282 gio_print(void *aux, const char *pnp) 283 { 284 struct gio_attach_args *ga = aux; 285 int i = 0; 286 287 /* gfx probe */ 288 if (ga->ga_product == -1) 289 return (QUIET); 290 291 if (pnp != NULL) { 292 int product, revision; 293 294 product = GIO_PRODUCT_PRODUCTID(ga->ga_product); 295 296 if (GIO_PRODUCT_32BIT_ID(ga->ga_product)) 297 revision = GIO_PRODUCT_REVISION(ga->ga_product); 298 else 299 revision = 0; 300 301 while (gio_knowndevs[i].productid != 0) { 302 if (gio_knowndevs[i].productid == product) { 303 aprint_normal("%s", gio_knowndevs[i].product); 304 break; 305 } 306 i++; 307 } 308 309 if (gio_knowndevs[i].productid == 0) 310 aprint_normal("unknown GIO card"); 311 312 aprint_normal(" (product 0x%02x revision 0x%02x) at %s", 313 product, revision, pnp); 314 } 315 316 if (ga->ga_slot != GIOCF_SLOT_DEFAULT) 317 aprint_normal(" slot %d", ga->ga_slot); 318 if (ga->ga_addr != (uint32_t) GIOCF_ADDR_DEFAULT) 319 aprint_normal(" addr 0x%x", ga->ga_addr); 320 321 return UNCONF; 322 } 323 324 static int 325 gio_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 326 { 327 struct gio_attach_args *ga = aux; 328 329 do { 330 /* Handled by direct configuration, so skip here */ 331 if (cf->cf_loc[GIOCF_ADDR] == GIOCF_ADDR_DEFAULT) 332 return 0; 333 334 ga->ga_slot = cf->cf_loc[GIOCF_SLOT]; 335 ga->ga_addr = cf->cf_loc[GIOCF_ADDR]; 336 ga->ga_iot = normal_memt; 337 ga->ga_ioh = MIPS_PHYS_TO_KSEG1(ga->ga_addr); 338 339 if (config_probe(parent, cf, ga)) 340 config_attach(parent, cf, ga, gio_print, CFARG_EOL); 341 } while (cf->cf_fstate == FSTATE_STAR); 342 343 return 0; 344 } 345 346 static int 347 gio_submatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 348 { 349 struct gio_attach_args *ga = aux; 350 351 if (cf->cf_loc[GIOCF_SLOT] != GIOCF_SLOT_DEFAULT && 352 cf->cf_loc[GIOCF_SLOT] != ga->ga_slot) 353 return 0; 354 355 if (cf->cf_loc[GIOCF_ADDR] != GIOCF_ADDR_DEFAULT && 356 cf->cf_loc[GIOCF_ADDR] != ga->ga_addr) 357 return 0; 358 359 return config_match(parent, cf, aux); 360 } 361 362 int 363 gio_cnattach(void) 364 { 365 struct gio_attach_args ga; 366 int i; 367 368 for (i = 0; gfx_bases[i].base != 0; i++) { 369 /* skip bases that don't apply to us */ 370 if (gfx_bases[i].mach_type != mach_type) 371 continue; 372 373 if (gfx_bases[i].mach_subtype != -1 && 374 gfx_bases[i].mach_subtype != mach_subtype) 375 continue; 376 377 ga.ga_slot = -1; 378 ga.ga_addr = gfx_bases[i].base; 379 /* XXX */ 380 if (platform.badaddr((void *)MIPS_PHYS_TO_KSEG1(ga.ga_addr), 381 sizeof(uint32_t))) 382 continue; 383 ga.ga_iot = normal_memt; 384 if (bus_space_map(normal_memt, ga.ga_addr, 0, 385 BUS_SPACE_MAP_LINEAR, &ga.ga_ioh) != 0) 386 continue; 387 ga.ga_dmat = &sgimips_default_bus_dma_tag; 388 ga.ga_product = -1; 389 390 #if (NGRTWO > 0) 391 if (grtwo_cnattach(&ga) == 0) 392 return 0; 393 #endif 394 395 #if (NLIGHT > 0) 396 if (light_cnattach(&ga) == 0) 397 return 0; 398 #endif 399 400 #if (NNEWPORT > 0) 401 if (newport_cnattach(&ga) == 0) 402 return 0; 403 #endif 404 405 } 406 407 return ENXIO; 408 } 409 410 /* 411 * Devices living in the expansion slots must enable or disable some 412 * GIO arbiter settings. This is accomplished via imc(4) or pic(4) 413 * registers, depending on the machine in question. 414 */ 415 int 416 gio_arb_config(int slot, uint32_t flags) 417 { 418 419 if (flags == 0) 420 return (EINVAL); 421 422 if (flags & ~(GIO_ARB_RT | GIO_ARB_LB | GIO_ARB_MST | GIO_ARB_SLV | 423 GIO_ARB_PIPE | GIO_ARB_NOPIPE | GIO_ARB_32BIT | GIO_ARB_64BIT | 424 GIO_ARB_HPC2_32BIT | GIO_ARB_HPC2_64BIT)) 425 return (EINVAL); 426 427 if (((flags & GIO_ARB_RT) && (flags & GIO_ARB_LB)) || 428 ((flags & GIO_ARB_MST) && (flags & GIO_ARB_SLV)) || 429 ((flags & GIO_ARB_PIPE) && (flags & GIO_ARB_NOPIPE)) || 430 ((flags & GIO_ARB_32BIT) && (flags & GIO_ARB_64BIT)) || 431 ((flags & GIO_ARB_HPC2_32BIT) && (flags & GIO_ARB_HPC2_64BIT))) 432 return (EINVAL); 433 434 #if (NPIC > 0) 435 if (mach_type == MACH_SGI_IP12) 436 return (pic_gio32_arb_config(slot, flags)); 437 #endif 438 439 #if (NIMC > 0) 440 if (mach_type == MACH_SGI_IP20 || mach_type == MACH_SGI_IP22) 441 return (imc_gio64_arb_config(slot, flags)); 442 #endif 443 444 return (EINVAL); 445 } 446 447 /* 448 * Establish an interrupt handler for the specified slot. 449 * 450 * Indy and Challenge S have an interrupt per GIO slot. Indigo and Indigo2 451 * share a single interrupt, however. 452 */ 453 void * 454 gio_intr_establish(int slot, int level, int (*func)(void *), void *arg) 455 { 456 int intr; 457 458 switch (mach_type) { 459 case MACH_SGI_IP12: 460 case MACH_SGI_IP20: 461 if (slot == GIO_SLOT_GFX) 462 panic("gio_intr_establish: slot %d", slot); 463 intr = 6; 464 break; 465 466 case MACH_SGI_IP22: 467 if (mach_subtype == MACH_SGI_IP22_FULLHOUSE) { 468 if (slot == GIO_SLOT_EXP1) 469 panic("gio_intr_establish: slot %d", slot); 470 intr = 6; 471 } else { 472 if (slot == GIO_SLOT_GFX) 473 panic("gio_intr_establish: slot %d", slot); 474 intr = (slot == GIO_SLOT_EXP0) ? 22 : 23; 475 } 476 break; 477 478 default: 479 panic("gio_intr_establish: mach_type"); 480 } 481 482 return (cpu_intr_establish(intr, level, func, arg)); 483 } 484 485 const char * 486 gio_product_string(int prid) 487 { 488 int i; 489 490 for (i = 0; gio_knowndevs[i].product != NULL; i++) 491 if (gio_knowndevs[i].productid == prid) 492 return (gio_knowndevs[i].product); 493 494 return (NULL); 495 } 496
Indexes created Wed Sep 24 02:09:48 GMT 2025