vrpciu.c revision 1.4
1 /* $NetBSD: vrpciu.c,v 1.4 2002/01/13 14:18:32 takemura Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 Enami Tsugutomo. 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/param.h> 30 #include <sys/systm.h> 31 #include <sys/device.h> 32 33 #include <machine/bus.h> 34 #include <machine/bus_space_hpcmips.h> 35 #include <machine/bus_dma_hpcmips.h> 36 #include <machine/config_hook.h> 37 38 #include <dev/pci/pcivar.h> 39 #include <dev/pci/pcidevs.h> 40 41 #include <hpcmips/vr/icureg.h> 42 #include <hpcmips/vr/vripvar.h> 43 #include <hpcmips/vr/vrpciureg.h> 44 45 #include "pci.h" 46 47 #ifdef DEBUG 48 #define DPRINTF(args) printf args 49 #else 50 #define DPRINTF(args) 51 #endif 52 53 struct vrpciu_softc { 54 struct device sc_dev; 55 56 vrip_chipset_tag_t sc_vc; 57 bus_space_tag_t sc_iot; 58 bus_space_handle_t sc_ioh; 59 void *sc_ih; 60 61 struct vrc4173bcu_softc *sc_bcu; /* vrc4173bcu */ 62 63 struct hpcmips_pci_chipset sc_pc; 64 }; 65 66 static void vrpciu_write(struct vrpciu_softc *, int, u_int32_t); 67 static u_int32_t 68 vrpciu_read(struct vrpciu_softc *, int); 69 #ifdef DEBUG 70 static void vrpciu_write_2(struct vrpciu_softc *, int, u_int16_t) 71 __attribute__((unused)); 72 static u_int16_t 73 vrpciu_read_2(struct vrpciu_softc *, int); 74 #endif 75 static int vrpciu_match(struct device *, struct cfdata *, void *); 76 static void vrpciu_attach(struct device *, struct device *, void *); 77 #if NPCI > 0 78 static int vrpciu_print(void *, const char *); 79 #endif 80 static int vrpciu_intr(void *); 81 static void vrpciu_attach_hook(struct device *, struct device *, 82 struct pcibus_attach_args *); 83 static int vrpciu_bus_maxdevs(pci_chipset_tag_t, int); 84 static int vrpciu_bus_devorder(pci_chipset_tag_t, int, char *); 85 static pcitag_t vrpciu_make_tag(pci_chipset_tag_t, int, int, int); 86 static void vrpciu_decompose_tag(pci_chipset_tag_t, pcitag_t, int *, int *, 87 int *); 88 static pcireg_t vrpciu_conf_read(pci_chipset_tag_t, pcitag_t, int); 89 static void vrpciu_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t); 90 static int vrpciu_intr_map(struct pci_attach_args *, pci_intr_handle_t *); 91 static const char *vrpciu_intr_string(pci_chipset_tag_t, pci_intr_handle_t); 92 static const struct evcnt *vrpciu_intr_evcnt(pci_chipset_tag_t, 93 pci_intr_handle_t); 94 static void *vrpciu_intr_establish(pci_chipset_tag_t, pci_intr_handle_t, 95 int, int (*)(void *), void *); 96 static void vrpciu_intr_disestablish(pci_chipset_tag_t, void *); 97 98 struct cfattach vrpciu_ca = { 99 sizeof(struct vrpciu_softc), vrpciu_match, vrpciu_attach 100 }; 101 102 static void 103 vrpciu_write(struct vrpciu_softc *sc, int offset, u_int32_t val) 104 { 105 106 bus_space_write_4(sc->sc_iot, sc->sc_ioh, offset, val); 107 } 108 109 static u_int32_t 110 vrpciu_read(struct vrpciu_softc *sc, int offset) 111 { 112 113 return (bus_space_read_4(sc->sc_iot, sc->sc_ioh, offset)); 114 } 115 116 #ifdef DEBUG 117 static void 118 vrpciu_write_2(struct vrpciu_softc *sc, int offset, u_int16_t val) 119 { 120 121 bus_space_write_2(sc->sc_iot, sc->sc_ioh, offset, val); 122 } 123 124 static u_int16_t 125 vrpciu_read_2(struct vrpciu_softc *sc, int offset) 126 { 127 128 return (bus_space_read_2(sc->sc_iot, sc->sc_ioh, offset)); 129 } 130 #endif 131 132 static int 133 vrpciu_match(struct device *parent, struct cfdata *match, void *aux) 134 { 135 136 return (1); 137 } 138 139 static void 140 vrpciu_attach(struct device *parent, struct device *self, void *aux) 141 { 142 struct vrpciu_softc *sc = (struct vrpciu_softc *)self; 143 pci_chipset_tag_t pc = &sc->sc_pc; 144 struct vrip_attach_args *va = aux; 145 struct bus_space_tag_hpcmips *iot; 146 u_int32_t reg; 147 char tmpbuf[16]; 148 #if NPCI > 0 149 struct pcibus_attach_args pba; 150 #endif 151 152 sc->sc_vc = va->va_vc; 153 sc->sc_iot = va->va_iot; 154 if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 0, 155 &sc->sc_ioh)) { 156 printf(": couldn't map io space\n"); 157 return; 158 } 159 160 sc->sc_ih = vrip_intr_establish(va->va_vc, va->va_intr, IPL_TTY, 161 vrpciu_intr, sc); 162 if (sc->sc_ih == NULL) { 163 printf(": couldn't establish interrupt\n"); 164 return; 165 } 166 167 /* Enable level 2 interrupt */ 168 vrip_intr_setmask2(va->va_vc, sc->sc_ih, PCIINT_INT0, 1); 169 170 printf("\n"); 171 172 #ifdef DEBUG 173 #define DUMP_MAW(sc, name, reg) do { \ 174 printf("%s: %s =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 175 (name), (reg)); \ 176 printf("%s:\tIBA/MASK =\t0x%08x/0x%08x (0x%08x - 0x%08x)\n", \ 177 (sc)->sc_dev.dv_xname, \ 178 reg & VRPCIU_MAW_IBAMASK, VRPCIU_MAW_ADDRMASK(reg), \ 179 VRPCIU_MAW_ADDR(reg), \ 180 VRPCIU_MAW_ADDR(reg) + VRPCIU_MAW_SIZE(reg)); \ 181 printf("%s:\tWINEN =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 182 reg & VRPCIU_MAW_WINEN); \ 183 printf("%s:\tPCIADR =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 184 VRPCIU_MAW_PCIADDR(reg)); \ 185 } while (0) 186 #define DUMP_TAW(sc, name, reg) do { \ 187 printf("%s: %s =\t\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 188 (name), (reg)); \ 189 printf("%s:\tMASK =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 190 VRPCIU_TAW_ADDRMASK(reg)); \ 191 printf("%s:\tWINEN =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 192 reg & VRPCIU_TAW_WINEN); \ 193 printf("%s:\tIBA =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 194 VRPCIU_TAW_IBA(reg)); \ 195 } while (0) 196 reg = vrpciu_read(sc, VRPCIU_MMAW1REG); 197 DUMP_MAW(sc, "MMAW1", reg); 198 reg = vrpciu_read(sc, VRPCIU_MMAW2REG); 199 DUMP_MAW(sc, "MMAW2", reg); 200 reg = vrpciu_read(sc, VRPCIU_TAW1REG); 201 DUMP_TAW(sc, "TAW1", reg); 202 reg = vrpciu_read(sc, VRPCIU_TAW2REG); 203 DUMP_TAW(sc, "TAW2", reg); 204 reg = vrpciu_read(sc, VRPCIU_MIOAWREG); 205 DUMP_MAW(sc, "MIOAW", reg); 206 printf("%s: BUSERRAD =\t0x%08x\n", sc->sc_dev.dv_xname, 207 vrpciu_read(sc, VRPCIU_BUSERRADREG)); 208 printf("%s: INTCNTSTA =\t0x%08x\n", sc->sc_dev.dv_xname, 209 vrpciu_read(sc, VRPCIU_INTCNTSTAREG)); 210 printf("%s: EXACC =\t0x%08x\n", sc->sc_dev.dv_xname, 211 vrpciu_read(sc, VRPCIU_EXACCREG)); 212 printf("%s: RECONT =\t0x%08x\n", sc->sc_dev.dv_xname, 213 vrpciu_read(sc, VRPCIU_RECONTREG)); 214 printf("%s: PCIEN =\t0x%08x\n", sc->sc_dev.dv_xname, 215 vrpciu_read(sc, VRPCIU_ENREG)); 216 printf("%s: CLOCKSEL =\t0x%08x\n", sc->sc_dev.dv_xname, 217 vrpciu_read(sc, VRPCIU_CLKSELREG)); 218 printf("%s: TRDYV =\t0x%08x\n", sc->sc_dev.dv_xname, 219 vrpciu_read(sc, VRPCIU_TRDYVREG)); 220 printf("%s: CLKRUN =\t0x%08x\n", sc->sc_dev.dv_xname, 221 vrpciu_read_2(sc, VRPCIU_CLKRUNREG)); 222 printf("%s: IDREG =\t0x%08x\n", sc->sc_dev.dv_xname, 223 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_ID_REG)); 224 reg = vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG); 225 printf("%s: CSR =\t\t0x%08x\n", sc->sc_dev.dv_xname, reg); 226 vrpciu_write(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG, reg); 227 printf("%s: CSR =\t\t0x%08x\n", sc->sc_dev.dv_xname, 228 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG)); 229 printf("%s: CLASS =\t0x%08x\n", sc->sc_dev.dv_xname, 230 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_CLASS_REG)); 231 printf("%s: BHLC =\t\t0x%08x\n", sc->sc_dev.dv_xname, 232 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_BHLC_REG)); 233 printf("%s: MAIL =\t\t0x%08x\n", sc->sc_dev.dv_xname, 234 vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MAILREG)); 235 printf("%s: MBA1 =\t\t0x%08x\n", sc->sc_dev.dv_xname, 236 vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA1REG)); 237 printf("%s: MBA2 =\t\t0x%08x\n", sc->sc_dev.dv_xname, 238 vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA2REG)); 239 printf("%s: INTR =\t\t0x%08x\n", sc->sc_dev.dv_xname, 240 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG)); 241 #if 0 242 vrpciu_write(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG, 243 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG) | 0x01); 244 printf("%s: INTR =\t\t0x%08x\n", sc->sc_dev.dv_xname, 245 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG)); 246 #endif 247 #endif 248 249 pc->pc_dev = &sc->sc_dev; 250 pc->pc_attach_hook = vrpciu_attach_hook; 251 pc->pc_bus_maxdevs = vrpciu_bus_maxdevs; 252 pc->pc_bus_devorder = vrpciu_bus_devorder; 253 pc->pc_make_tag = vrpciu_make_tag; 254 pc->pc_decompose_tag = vrpciu_decompose_tag; 255 pc->pc_conf_read = vrpciu_conf_read; 256 pc->pc_conf_write = vrpciu_conf_write; 257 pc->pc_intr_map = vrpciu_intr_map; 258 pc->pc_intr_string = vrpciu_intr_string; 259 pc->pc_intr_evcnt = vrpciu_intr_evcnt; 260 pc->pc_intr_establish = vrpciu_intr_establish; 261 pc->pc_intr_disestablish = vrpciu_intr_disestablish; 262 263 #if 0 264 { 265 int i; 266 267 for (i = 0; i < 8; i++) 268 printf("%s: ID_REG(0, 0, %d) = 0x%08x\n", 269 sc->sc_dev.dv_xname, i, 270 pci_conf_read(pc, pci_make_tag(pc, 0, 0, i), 271 PCI_ID_REG)); 272 } 273 #endif 274 275 #if NPCI > 0 276 memset(&pba, 0, sizeof(pba)); 277 pba.pba_busname = "pci"; 278 279 /* For now, just inherit window mappings set by WinCE. XXX. */ 280 281 iot = hpcmips_alloc_bus_space_tag(); 282 reg = vrpciu_read(sc, VRPCIU_MIOAWREG); 283 snprintf(tmpbuf, sizeof(tmpbuf), "%s/iot", 284 sc->sc_dev.dv_xname); 285 hpcmips_init_bus_space(iot, (struct bus_space_tag_hpcmips *)sc->sc_iot, 286 tmpbuf, VRPCIU_MAW_ADDR(reg), VRPCIU_MAW_SIZE(reg)); 287 pba.pba_iot = &iot->bst; 288 289 /* 290 * Just use system bus space tag. It works since WinCE maps 291 * PCI bus space at same offset. But this isn't right thing 292 * of course. XXX. 293 */ 294 pba.pba_memt = sc->sc_iot; 295 pba.pba_dmat = &hpcmips_default_bus_dma_tag.bdt; 296 pba.pba_bus = 0; 297 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED | 298 PCI_FLAGS_MRL_OKAY; 299 pba.pba_pc = pc; 300 301 config_found(self, &pba, vrpciu_print); 302 #endif 303 } 304 305 #if NPCI > 0 306 static int 307 vrpciu_print(void *aux, const char *pnp) 308 { 309 struct pcibus_attach_args *pba = aux; 310 311 if (pnp != NULL) 312 printf("%s at %s", pba->pba_busname, pnp); 313 else 314 printf(" bus %d", pba->pba_bus); 315 316 return (UNCONF); 317 } 318 #endif 319 320 /* 321 * Handle PCI error interrupts. 322 */ 323 int 324 vrpciu_intr(void *arg) 325 { 326 struct vrpciu_softc *sc = (struct vrpciu_softc *)arg; 327 u_int32_t isr; 328 329 isr = vrpciu_read(sc, VRPCIU_INTCNTSTAREG); 330 printf("%s: vrpciu_intr 0x%08x\n", sc->sc_dev.dv_xname, isr); 331 return ((isr & 0x0f) ? 1 : 0); 332 } 333 334 void 335 vrpciu_attach_hook(struct device *parent, struct device *self, 336 struct pcibus_attach_args *pba) 337 { 338 339 return; 340 } 341 342 int 343 vrpciu_bus_maxdevs(pci_chipset_tag_t pc, int busno) 344 { 345 346 return (32); 347 } 348 349 int 350 vrpciu_bus_devorder(pci_chipset_tag_t pc, int busno, char *devs) 351 { 352 int i, dev; 353 char priorities[32]; 354 static pcireg_t ids[] = { 355 /* these devices should be attached first */ 356 PCI_ID_CODE(PCI_VENDOR_NEC, PCI_PRODUCT_NEC_VRC4173_BCU), 357 }; 358 359 /* scan PCI devices and check the id table */ 360 memset(priorities, 0, sizeof(priorities)); 361 for (dev = 0; dev < 32; dev++) { 362 pcireg_t id; 363 id = pci_conf_read(pc, pci_make_tag(pc, 0, dev, 0),PCI_ID_REG); 364 for (i = 0; i < sizeof(ids)/sizeof(*ids); i++) 365 if (id == ids[i]) 366 priorities[dev] = 1; 367 } 368 369 /* fill order array */ 370 for (i = 1; 0 <= i; i--) 371 for (dev = 0; dev < 32; dev++) 372 if (priorities[dev] == i) 373 *devs++ = dev; 374 375 return (32); 376 } 377 378 pcitag_t 379 vrpciu_make_tag(pci_chipset_tag_t pc, int bus, int device, int function) 380 { 381 382 return ((bus << 16) | (device << 11) | (function << 8)); 383 } 384 385 void 386 vrpciu_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp, 387 int *fp) 388 { 389 390 if (bp != NULL) 391 *bp = (tag >> 16) & 0xff; 392 if (dp != NULL) 393 *dp = (tag >> 11) & 0x1f; 394 if (fp != NULL) 395 *fp = (tag >> 8) & 0x07; 396 } 397 398 pcireg_t 399 vrpciu_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) 400 { 401 struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev; 402 u_int32_t val; 403 int bus, device, function; 404 405 pci_decompose_tag(pc, tag, &bus, &device, &function); 406 if (bus == 0) { 407 if (device > 21) 408 return ((pcitag_t)-1); 409 tag = (1 << (device + 11)) | (function << 8); /* Type 0 */ 410 } else 411 tag |= VRPCIU_CONF_TYPE1; 412 413 vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg); 414 val = vrpciu_read(sc, VRPCIU_CONFDREG); 415 #if 0 416 printf("%s: conf_read: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n", 417 sc->sc_dev.dv_xname, (u_int32_t)tag, reg, val); 418 #endif 419 return (val); 420 } 421 422 void 423 vrpciu_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, 424 pcireg_t data) 425 { 426 struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev; 427 int bus, device, function; 428 429 #if 0 430 printf("%s: conf_write: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n", 431 sc->sc_dev.dv_xname, (u_int32_t)tag, reg, (u_int32_t)data); 432 #endif 433 vrpciu_decompose_tag(pc, tag, &bus, &device, &function); 434 if (bus == 0) { 435 if (device > 21) 436 return; 437 tag = (1 << (device + 11)) | (function << 8); /* Type 0 */ 438 } else 439 tag |= VRPCIU_CONF_TYPE1; 440 441 vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg); 442 vrpciu_write(sc, VRPCIU_CONFDREG, data); 443 } 444 445 int 446 vrpciu_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) 447 { 448 pci_chipset_tag_t pc = pa->pa_pc; 449 pcitag_t intrtag = pa->pa_intrtag; 450 int bus, dev, func; 451 #ifdef DEBUG 452 int line = pa->pa_intrline; 453 int pin = pa->pa_intrpin; 454 #endif 455 456 pci_decompose_tag(pc, intrtag, &bus, &dev, &func); 457 DPRINTF(("%s(%d, %d, %d): line = %d, pin = %d\n", pc->pc_dev->dv_xname, 458 bus, dev, func, line, pin)); 459 460 *ihp = CONFIG_HOOK_PCIINTR_ID(bus, dev, func); 461 462 return (0); 463 } 464 465 const char * 466 vrpciu_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih) 467 { 468 static char irqstr[sizeof("pciintr") + 16]; 469 470 snprintf(irqstr, sizeof(irqstr), "pciintr %d:%d:%d", 471 CONFIG_HOOK_PCIINTR_BUS((int)ih), 472 CONFIG_HOOK_PCIINTR_DEVICE((int)ih), 473 CONFIG_HOOK_PCIINTR_FUNCTION((int)ih)); 474 475 return (irqstr); 476 } 477 478 const struct evcnt * 479 vrpciu_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih) 480 { 481 482 /* XXX for now, no evcnt parent reported */ 483 484 return (NULL); 485 } 486 487 void * 488 vrpciu_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level, 489 int (*func)(void *), void *arg) 490 { 491 492 if (ih == -1) 493 return (NULL); 494 DPRINTF(("vrpciu_intr_establish: %p\n", sc)); 495 496 return (config_hook(CONFIG_HOOK_PCIINTR, ih, CONFIG_HOOK_EXCLUSIVE, 497 (int (*)(void *, int, long, void *))func, arg)); 498 } 499 500 void 501 vrpciu_intr_disestablish(pci_chipset_tag_t pc, void *cookie) 502 { 503 504 DPRINTF(("vrpciu_intr_disestablish: %p\n", sc)); 505 config_unhook(cookie); 506 } 507
Indexes created Wed Oct 01 18:09:54 GMT 2025