1 /* $NetBSD: vrpciu.c,v 1.17 2005/12/11 12:17:35 christos 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/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: vrpciu.c,v 1.17 2005/12/11 12:17:35 christos Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/device.h> 35 36 #include <machine/bus.h> 37 #include <machine/bus_space_hpcmips.h> 38 #include <machine/bus_dma_hpcmips.h> 39 #include <machine/config_hook.h> 40 #include <machine/platid.h> 41 #include <machine/platid_mask.h> 42 43 #include <dev/pci/pcivar.h> 44 #include <dev/pci/pcidevs.h> 45 #include <dev/pci/pciidereg.h> 46 47 #include <hpcmips/vr/icureg.h> 48 #include <hpcmips/vr/vripif.h> 49 #include <hpcmips/vr/vrpciureg.h> 50 51 #include "pci.h" 52 53 #ifdef DEBUG 54 #define DPRINTF(args) printf args 55 #else 56 #define DPRINTF(args) 57 #endif 58 59 struct vrpciu_softc { 60 struct device sc_dev; 61 62 vrip_chipset_tag_t sc_vc; 63 bus_space_tag_t sc_iot; 64 bus_space_handle_t sc_ioh; 65 void *sc_ih; 66 67 struct vrc4173bcu_softc *sc_bcu; /* vrc4173bcu */ 68 69 struct hpcmips_pci_chipset sc_pc; 70 }; 71 72 static void vrpciu_write(struct vrpciu_softc *, int, u_int32_t); 73 static u_int32_t 74 vrpciu_read(struct vrpciu_softc *, int); 75 #ifdef DEBUG 76 static void vrpciu_write_2(struct vrpciu_softc *, int, u_int16_t) 77 __attribute__((unused)); 78 static u_int16_t 79 vrpciu_read_2(struct vrpciu_softc *, int); 80 #endif 81 static int vrpciu_match(struct device *, struct cfdata *, void *); 82 static void vrpciu_attach(struct device *, struct device *, void *); 83 static int vrpciu_intr(void *); 84 static void vrpciu_attach_hook(struct device *, struct device *, 85 struct pcibus_attach_args *); 86 static int vrpciu_bus_maxdevs(pci_chipset_tag_t, int); 87 static int vrpciu_bus_devorder(pci_chipset_tag_t, int, char *); 88 static pcitag_t vrpciu_make_tag(pci_chipset_tag_t, int, int, int); 89 static void vrpciu_decompose_tag(pci_chipset_tag_t, pcitag_t, int *, int *, 90 int *); 91 static pcireg_t vrpciu_conf_read(pci_chipset_tag_t, pcitag_t, int); 92 static void vrpciu_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t); 93 static int vrpciu_intr_map(struct pci_attach_args *, pci_intr_handle_t *); 94 static const char *vrpciu_intr_string(pci_chipset_tag_t, pci_intr_handle_t); 95 static const struct evcnt *vrpciu_intr_evcnt(pci_chipset_tag_t, 96 pci_intr_handle_t); 97 static void *vrpciu_intr_establish(pci_chipset_tag_t, pci_intr_handle_t, 98 int, int (*)(void *), void *); 99 static void vrpciu_intr_disestablish(pci_chipset_tag_t, void *); 100 101 CFATTACH_DECL(vrpciu, sizeof(struct vrpciu_softc), 102 vrpciu_match, vrpciu_attach, NULL, NULL); 103 104 static void 105 vrpciu_write(struct vrpciu_softc *sc, int offset, u_int32_t val) 106 { 107 108 bus_space_write_4(sc->sc_iot, sc->sc_ioh, offset, val); 109 } 110 111 static u_int32_t 112 vrpciu_read(struct vrpciu_softc *sc, int offset) 113 { 114 115 return (bus_space_read_4(sc->sc_iot, sc->sc_ioh, offset)); 116 } 117 118 #ifdef DEBUG 119 static void 120 vrpciu_write_2(struct vrpciu_softc *sc, int offset, u_int16_t val) 121 { 122 123 bus_space_write_2(sc->sc_iot, sc->sc_ioh, offset, val); 124 } 125 126 static u_int16_t 127 vrpciu_read_2(struct vrpciu_softc *sc, int offset) 128 { 129 130 return (bus_space_read_2(sc->sc_iot, sc->sc_ioh, offset)); 131 } 132 #endif 133 134 static int 135 vrpciu_match(struct device *parent, struct cfdata *match, void *aux) 136 { 137 138 return (1); 139 } 140 141 static void 142 vrpciu_attach(struct device *parent, struct device *self, void *aux) 143 { 144 struct vrpciu_softc *sc = (struct vrpciu_softc *)self; 145 pci_chipset_tag_t pc = &sc->sc_pc; 146 struct vrip_attach_args *va = aux; 147 #if defined(DEBUG) || NPCI > 0 148 u_int32_t reg; 149 #endif 150 #if NPCI > 0 151 struct bus_space_tag_hpcmips *iot; 152 char tmpbuf[16]; 153 struct pcibus_attach_args pba; 154 #endif 155 156 sc->sc_vc = va->va_vc; 157 sc->sc_iot = va->va_iot; 158 if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 0, 159 &sc->sc_ioh)) { 160 printf(": couldn't map io space\n"); 161 return; 162 } 163 164 sc->sc_ih = vrip_intr_establish(va->va_vc, va->va_unit, 0, IPL_TTY, 165 vrpciu_intr, sc); 166 if (sc->sc_ih == NULL) { 167 printf(": couldn't establish interrupt\n"); 168 return; 169 } 170 171 /* Enable level 2 interrupt */ 172 vrip_intr_setmask2(va->va_vc, sc->sc_ih, PCIINT_INT0, 1); 173 174 printf("\n"); 175 176 #ifdef DEBUG 177 #define DUMP_MAW(sc, name, reg) do { \ 178 printf("%s: %s =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 179 (name), (reg)); \ 180 printf("%s:\tIBA/MASK =\t0x%08x/0x%08x (0x%08x - 0x%08x)\n", \ 181 (sc)->sc_dev.dv_xname, \ 182 reg & VRPCIU_MAW_IBAMASK, VRPCIU_MAW_ADDRMASK(reg), \ 183 VRPCIU_MAW_ADDR(reg), \ 184 VRPCIU_MAW_ADDR(reg) + VRPCIU_MAW_SIZE(reg)); \ 185 printf("%s:\tWINEN =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 186 reg & VRPCIU_MAW_WINEN); \ 187 printf("%s:\tPCIADR =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 188 VRPCIU_MAW_PCIADDR(reg)); \ 189 } while (0) 190 #define DUMP_TAW(sc, name, reg) do { \ 191 printf("%s: %s =\t\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 192 (name), (reg)); \ 193 printf("%s:\tMASK =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 194 VRPCIU_TAW_ADDRMASK(reg)); \ 195 printf("%s:\tWINEN =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 196 reg & VRPCIU_TAW_WINEN); \ 197 printf("%s:\tIBA =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 198 VRPCIU_TAW_IBA(reg)); \ 199 } while (0) 200 reg = vrpciu_read(sc, VRPCIU_MMAW1REG); 201 DUMP_MAW(sc, "MMAW1", reg); 202 reg = vrpciu_read(sc, VRPCIU_MMAW2REG); 203 DUMP_MAW(sc, "MMAW2", reg); 204 reg = vrpciu_read(sc, VRPCIU_TAW1REG); 205 DUMP_TAW(sc, "TAW1", reg); 206 reg = vrpciu_read(sc, VRPCIU_TAW2REG); 207 DUMP_TAW(sc, "TAW2", reg); 208 reg = vrpciu_read(sc, VRPCIU_MIOAWREG); 209 DUMP_MAW(sc, "MIOAW", reg); 210 printf("%s: BUSERRAD =\t0x%08x\n", sc->sc_dev.dv_xname, 211 vrpciu_read(sc, VRPCIU_BUSERRADREG)); 212 printf("%s: INTCNTSTA =\t0x%08x\n", sc->sc_dev.dv_xname, 213 vrpciu_read(sc, VRPCIU_INTCNTSTAREG)); 214 printf("%s: EXACC =\t0x%08x\n", sc->sc_dev.dv_xname, 215 vrpciu_read(sc, VRPCIU_EXACCREG)); 216 printf("%s: RECONT =\t0x%08x\n", sc->sc_dev.dv_xname, 217 vrpciu_read(sc, VRPCIU_RECONTREG)); 218 printf("%s: PCIEN =\t0x%08x\n", sc->sc_dev.dv_xname, 219 vrpciu_read(sc, VRPCIU_ENREG)); 220 printf("%s: CLOCKSEL =\t0x%08x\n", sc->sc_dev.dv_xname, 221 vrpciu_read(sc, VRPCIU_CLKSELREG)); 222 printf("%s: TRDYV =\t0x%08x\n", sc->sc_dev.dv_xname, 223 vrpciu_read(sc, VRPCIU_TRDYVREG)); 224 printf("%s: CLKRUN =\t0x%08x\n", sc->sc_dev.dv_xname, 225 vrpciu_read_2(sc, VRPCIU_CLKRUNREG)); 226 printf("%s: IDREG =\t0x%08x\n", sc->sc_dev.dv_xname, 227 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_ID_REG)); 228 reg = vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG); 229 printf("%s: CSR =\t\t0x%08x\n", sc->sc_dev.dv_xname, reg); 230 vrpciu_write(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG, reg); 231 printf("%s: CSR =\t\t0x%08x\n", sc->sc_dev.dv_xname, 232 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG)); 233 printf("%s: CLASS =\t0x%08x\n", sc->sc_dev.dv_xname, 234 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_CLASS_REG)); 235 printf("%s: BHLC =\t\t0x%08x\n", sc->sc_dev.dv_xname, 236 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_BHLC_REG)); 237 printf("%s: MAIL =\t\t0x%08x\n", sc->sc_dev.dv_xname, 238 vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MAILREG)); 239 printf("%s: MBA1 =\t\t0x%08x\n", sc->sc_dev.dv_xname, 240 vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA1REG)); 241 printf("%s: MBA2 =\t\t0x%08x\n", sc->sc_dev.dv_xname, 242 vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA2REG)); 243 printf("%s: INTR =\t\t0x%08x\n", sc->sc_dev.dv_xname, 244 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG)); 245 #if 0 246 vrpciu_write(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG, 247 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG) | 0x01); 248 printf("%s: INTR =\t\t0x%08x\n", sc->sc_dev.dv_xname, 249 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG)); 250 #endif 251 #endif 252 253 pc->pc_dev = &sc->sc_dev; 254 pc->pc_attach_hook = vrpciu_attach_hook; 255 pc->pc_bus_maxdevs = vrpciu_bus_maxdevs; 256 pc->pc_bus_devorder = vrpciu_bus_devorder; 257 pc->pc_make_tag = vrpciu_make_tag; 258 pc->pc_decompose_tag = vrpciu_decompose_tag; 259 pc->pc_conf_read = vrpciu_conf_read; 260 pc->pc_conf_write = vrpciu_conf_write; 261 pc->pc_intr_map = vrpciu_intr_map; 262 pc->pc_intr_string = vrpciu_intr_string; 263 pc->pc_intr_evcnt = vrpciu_intr_evcnt; 264 pc->pc_intr_establish = vrpciu_intr_establish; 265 pc->pc_intr_disestablish = vrpciu_intr_disestablish; 266 267 #if 0 268 { 269 int i; 270 271 for (i = 0; i < 8; i++) 272 printf("%s: ID_REG(0, 0, %d) = 0x%08x\n", 273 sc->sc_dev.dv_xname, i, 274 pci_conf_read(pc, pci_make_tag(pc, 0, 0, i), 275 PCI_ID_REG)); 276 } 277 #endif 278 279 #if NPCI > 0 280 memset(&pba, 0, sizeof(pba)); 281 282 /* For now, just inherit window mappings set by WinCE. XXX. */ 283 284 iot = hpcmips_alloc_bus_space_tag(); 285 reg = vrpciu_read(sc, VRPCIU_MIOAWREG); 286 snprintf(tmpbuf, sizeof(tmpbuf), "%s/iot", 287 sc->sc_dev.dv_xname); 288 hpcmips_init_bus_space(iot, (struct bus_space_tag_hpcmips *)sc->sc_iot, 289 tmpbuf, VRPCIU_MAW_ADDR(reg), VRPCIU_MAW_SIZE(reg)); 290 pba.pba_iot = &iot->bst; 291 292 /* 293 * Just use system bus space tag. It works since WinCE maps 294 * PCI bus space at same offset. But this isn't right thing 295 * of course. XXX. 296 */ 297 pba.pba_memt = sc->sc_iot; 298 pba.pba_dmat = &hpcmips_default_bus_dma_tag.bdt; 299 pba.pba_dmat64 = NULL; 300 pba.pba_bus = 0; 301 pba.pba_bridgetag = NULL; 302 303 if (platid_match(&platid, &platid_mask_MACH_LASER5_L_BOARD)) { 304 /* 305 * fix PCI device configuration for L-Router. 306 */ 307 /* change IDE controller to native mode */ 308 reg = pci_conf_read(pc, pci_make_tag(pc, 0, 16, 0), 309 PCI_CLASS_REG); 310 reg |= PCIIDE_INTERFACE_PCI(0) << PCI_INTERFACE_SHIFT; 311 reg |= PCIIDE_INTERFACE_PCI(1) << PCI_INTERFACE_SHIFT; 312 pci_conf_write(pc, pci_make_tag(pc, 0, 16, 0), PCI_CLASS_REG, 313 reg); 314 /* fix broken BAR setting of fxp0, fxp1 */ 315 pci_conf_write(pc, pci_make_tag(pc, 0, 0, 0), PCI_MAPREG_START, 316 0x11100000); 317 pci_conf_write(pc, pci_make_tag(pc, 0, 1, 0), PCI_MAPREG_START, 318 0x11200000); 319 } 320 321 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED | 322 PCI_FLAGS_MRL_OKAY; 323 pba.pba_pc = pc; 324 325 config_found_ia(self, "pcibus", &pba, pcibusprint); 326 #endif 327 } 328 329 /* 330 * Handle PCI error interrupts. 331 */ 332 int 333 vrpciu_intr(void *arg) 334 { 335 struct vrpciu_softc *sc = (struct vrpciu_softc *)arg; 336 u_int32_t isr, baddr; 337 338 isr = vrpciu_read(sc, VRPCIU_INTCNTSTAREG); 339 baddr = vrpciu_read(sc, VRPCIU_BUSERRADREG); 340 printf("%s: status=0x%08x bad addr=0x%08x\n", 341 sc->sc_dev.dv_xname, isr, baddr); 342 return ((isr & 0x0f) ? 1 : 0); 343 } 344 345 void 346 vrpciu_attach_hook(struct device *parent, struct device *self, 347 struct pcibus_attach_args *pba) 348 { 349 350 return; 351 } 352 353 int 354 vrpciu_bus_maxdevs(pci_chipset_tag_t pc, int busno) 355 { 356 357 return (32); 358 } 359 360 int 361 vrpciu_bus_devorder(pci_chipset_tag_t pc, int busno, char *devs) 362 { 363 int i, dev; 364 char priorities[32]; 365 static pcireg_t ids[] = { 366 /* these devices should be attached first */ 367 PCI_ID_CODE(PCI_VENDOR_NEC, PCI_PRODUCT_NEC_VRC4173_BCU), 368 }; 369 370 /* scan PCI devices and check the id table */ 371 memset(priorities, 0, sizeof(priorities)); 372 for (dev = 0; dev < 32; dev++) { 373 pcireg_t id; 374 id = pci_conf_read(pc, pci_make_tag(pc, 0, dev, 0),PCI_ID_REG); 375 for (i = 0; i < sizeof(ids)/sizeof(*ids); i++) 376 if (id == ids[i]) 377 priorities[dev] = 1; 378 } 379 380 /* fill order array */ 381 for (i = 1; 0 <= i; i--) 382 for (dev = 0; dev < 32; dev++) 383 if (priorities[dev] == i) 384 *devs++ = dev; 385 386 return (32); 387 } 388 389 pcitag_t 390 vrpciu_make_tag(pci_chipset_tag_t pc, int bus, int device, int function) 391 { 392 393 return ((bus << 16) | (device << 11) | (function << 8)); 394 } 395 396 void 397 vrpciu_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp, 398 int *fp) 399 { 400 401 if (bp != NULL) 402 *bp = (tag >> 16) & 0xff; 403 if (dp != NULL) 404 *dp = (tag >> 11) & 0x1f; 405 if (fp != NULL) 406 *fp = (tag >> 8) & 0x07; 407 } 408 409 pcireg_t 410 vrpciu_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) 411 { 412 struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev; 413 u_int32_t val; 414 int bus, device, function; 415 416 pci_decompose_tag(pc, tag, &bus, &device, &function); 417 if (bus == 0) { 418 if (device > 21) 419 return ((pcitag_t)-1); 420 tag = (1 << (device + 11)) | (function << 8); /* Type 0 */ 421 } else 422 tag |= VRPCIU_CONF_TYPE1; 423 424 vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg); 425 val = vrpciu_read(sc, VRPCIU_CONFDREG); 426 #if 0 427 printf("%s: conf_read: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n", 428 sc->sc_dev.dv_xname, (u_int32_t)tag, reg, val); 429 #endif 430 return (val); 431 } 432 433 void 434 vrpciu_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, 435 pcireg_t data) 436 { 437 struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev; 438 int bus, device, function; 439 440 #if 0 441 printf("%s: conf_write: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n", 442 sc->sc_dev.dv_xname, (u_int32_t)tag, reg, (u_int32_t)data); 443 #endif 444 vrpciu_decompose_tag(pc, tag, &bus, &device, &function); 445 if (bus == 0) { 446 if (device > 21) 447 return; 448 tag = (1 << (device + 11)) | (function << 8); /* Type 0 */ 449 } else 450 tag |= VRPCIU_CONF_TYPE1; 451 452 vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg); 453 vrpciu_write(sc, VRPCIU_CONFDREG, data); 454 } 455 456 int 457 vrpciu_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) 458 { 459 pci_chipset_tag_t pc = pa->pa_pc; 460 pcitag_t intrtag = pa->pa_intrtag; 461 int bus, dev, func; 462 #ifdef DEBUG 463 int line = pa->pa_intrline; 464 int pin = pa->pa_intrpin; 465 #endif 466 467 pci_decompose_tag(pc, intrtag, &bus, &dev, &func); 468 DPRINTF(("%s(%d, %d, %d): line = %d, pin = %d\n", pc->pc_dev->dv_xname, 469 bus, dev, func, line, pin)); 470 471 *ihp = CONFIG_HOOK_PCIINTR_ID(bus, dev, func); 472 473 return (0); 474 } 475 476 const char * 477 vrpciu_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih) 478 { 479 static char irqstr[sizeof("pciintr") + 16]; 480 481 snprintf(irqstr, sizeof(irqstr), "pciintr %d:%d:%d", 482 CONFIG_HOOK_PCIINTR_BUS((int)ih), 483 CONFIG_HOOK_PCIINTR_DEVICE((int)ih), 484 CONFIG_HOOK_PCIINTR_FUNCTION((int)ih)); 485 486 return (irqstr); 487 } 488 489 const struct evcnt * 490 vrpciu_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih) 491 { 492 493 /* XXX for now, no evcnt parent reported */ 494 495 return (NULL); 496 } 497 498 void * 499 vrpciu_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level, 500 int (*func)(void *), void *arg) 501 { 502 503 if (ih == -1) 504 return (NULL); 505 DPRINTF(("vrpciu_intr_establish: %lx\n", ih)); 506 507 return (config_hook(CONFIG_HOOK_PCIINTR, ih, CONFIG_HOOK_EXCLUSIVE, 508 (int (*)(void *, int, long, void *))func, arg)); 509 } 510 511 void 512 vrpciu_intr_disestablish(pci_chipset_tag_t pc, void *cookie) 513 { 514 515 DPRINTF(("vrpciu_intr_disestablish: %p\n", cookie)); 516 config_unhook(cookie); 517 } 518