vrpciu.c revision 1.2
1 /* $NetBSD: vrpciu.c,v 1.2 2001/11/22 14:24:33 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 37 #include <dev/pci/pcivar.h> 38 39 #include <hpcmips/vr/icureg.h> 40 #include <hpcmips/vr/vripvar.h> 41 #include <hpcmips/vr/vrpciureg.h> 42 #include <hpcmips/vr/vrc4173bcuvar.h> 43 44 #include "pci.h" 45 46 #ifdef DEBUG 47 #define DPRINTF(args) printf args 48 #else 49 #define DPRINTF(args) 50 #endif 51 52 struct vrpciu_softc { 53 struct device sc_dev; 54 55 vrip_chipset_tag_t sc_vc; 56 bus_space_tag_t sc_iot; 57 bus_space_handle_t sc_ioh; 58 void *sc_ih; 59 60 struct vrc4173bcu_softc *sc_bcu; /* vrc4173bcu */ 61 62 struct hpcmips_pci_chipset sc_pc; 63 }; 64 65 static void vrpciu_write(struct vrpciu_softc *, int, u_int32_t); 66 static u_int32_t 67 vrpciu_read(struct vrpciu_softc *, int); 68 #ifdef DEBUG 69 static void vrpciu_write_2(struct vrpciu_softc *, int, u_int16_t) 70 __attribute__((unused)); 71 static u_int16_t 72 vrpciu_read_2(struct vrpciu_softc *, int); 73 #endif 74 static int vrpciu_match(struct device *, struct cfdata *, void *); 75 static void vrpciu_attach(struct device *, struct device *, void *); 76 #if NPCI > 0 77 static int vrpciu_print(void *, const char *); 78 #endif 79 static int vrpciu_intr(void *); 80 static void vrpciu_attach_hook(struct device *, struct device *, 81 struct pcibus_attach_args *); 82 static int vrpciu_bus_maxdevs(pci_chipset_tag_t, int); 83 static pcitag_t vrpciu_make_tag(pci_chipset_tag_t, int, int, int); 84 static void vrpciu_decompose_tag(pci_chipset_tag_t, pcitag_t, int *, int *, 85 int *); 86 static pcireg_t vrpciu_conf_read(pci_chipset_tag_t, pcitag_t, int); 87 static void vrpciu_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t); 88 static void *vrpciu_intr_establish(pci_chipset_tag_t, pci_intr_handle_t, 89 int, int (*)(void *), void *); 90 static void vrpciu_intr_disestablish(pci_chipset_tag_t, void *); 91 static void *vrpciu_vrcintr_establish(pci_chipset_tag_t, int, 92 int (*)(void *), void *); 93 static void vrpciu_vrcintr_disestablish(pci_chipset_tag_t, void *); 94 95 struct cfattach vrpciu_ca = { 96 sizeof(struct vrpciu_softc), vrpciu_match, vrpciu_attach 97 }; 98 99 static void 100 vrpciu_write(struct vrpciu_softc *sc, int offset, u_int32_t val) 101 { 102 103 bus_space_write_4(sc->sc_iot, sc->sc_ioh, offset, val); 104 } 105 106 static u_int32_t 107 vrpciu_read(struct vrpciu_softc *sc, int offset) 108 { 109 110 return (bus_space_read_4(sc->sc_iot, sc->sc_ioh, offset)); 111 } 112 113 #ifdef DEBUG 114 static void 115 vrpciu_write_2(struct vrpciu_softc *sc, int offset, u_int16_t val) 116 { 117 118 bus_space_write_2(sc->sc_iot, sc->sc_ioh, offset, val); 119 } 120 121 static u_int16_t 122 vrpciu_read_2(struct vrpciu_softc *sc, int offset) 123 { 124 125 return (bus_space_read_2(sc->sc_iot, sc->sc_ioh, offset)); 126 } 127 #endif 128 129 static int 130 vrpciu_match(struct device *parent, struct cfdata *match, void *aux) 131 { 132 133 return (1); 134 } 135 136 static void 137 vrpciu_attach(struct device *parent, struct device *self, void *aux) 138 { 139 struct vrpciu_softc *sc = (struct vrpciu_softc *)self; 140 pci_chipset_tag_t pc = &sc->sc_pc; 141 struct vrip_attach_args *va = aux; 142 struct bus_space_tag_hpcmips *iot; 143 u_int32_t reg; 144 char tmpbuf[16]; 145 #if NPCI > 0 146 struct pcibus_attach_args pba; 147 #endif 148 149 sc->sc_vc = va->va_vc; 150 sc->sc_iot = va->va_iot; 151 if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 0, 152 &sc->sc_ioh)) { 153 printf(": couldn't map io space\n"); 154 return; 155 } 156 157 sc->sc_ih = vrip_intr_establish(va->va_vc, va->va_intr, IPL_TTY, 158 vrpciu_intr, sc); 159 if (sc->sc_ih == NULL) { 160 printf(": couldn't establish interrupt\n"); 161 return; 162 } 163 164 /* Enable level 2 interrupt */ 165 vrip_intr_setmask2(va->va_vc, sc->sc_ih, PCIINT_INT0, 1); 166 167 printf("\n"); 168 169 #ifdef DEBUG 170 #define DUMP_MAW(sc, name, reg) do { \ 171 printf("%s: %s =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 172 (name), (reg)); \ 173 printf("%s:\tIBA/MASK =\t0x%08x/0x%08x (0x%08x - 0x%08x)\n", \ 174 (sc)->sc_dev.dv_xname, \ 175 reg & VRPCIU_MAW_IBAMASK, VRPCIU_MAW_ADDRMASK(reg), \ 176 VRPCIU_MAW_ADDR(reg), \ 177 VRPCIU_MAW_ADDR(reg) + VRPCIU_MAW_SIZE(reg)); \ 178 printf("%s:\tWINEN =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 179 reg & VRPCIU_MAW_WINEN); \ 180 printf("%s:\tPCIADR =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 181 VRPCIU_MAW_PCIADDR(reg)); \ 182 } while (0) 183 #define DUMP_TAW(sc, name, reg) do { \ 184 printf("%s: %s =\t\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 185 (name), (reg)); \ 186 printf("%s:\tMASK =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 187 VRPCIU_TAW_ADDRMASK(reg)); \ 188 printf("%s:\tWINEN =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 189 reg & VRPCIU_TAW_WINEN); \ 190 printf("%s:\tIBA =\t0x%08x\n", (sc)->sc_dev.dv_xname, \ 191 VRPCIU_TAW_IBA(reg)); \ 192 } while (0) 193 reg = vrpciu_read(sc, VRPCIU_MMAW1REG); 194 DUMP_MAW(sc, "MMAW1", reg); 195 reg = vrpciu_read(sc, VRPCIU_MMAW2REG); 196 DUMP_MAW(sc, "MMAW2", reg); 197 reg = vrpciu_read(sc, VRPCIU_TAW1REG); 198 DUMP_TAW(sc, "TAW1", reg); 199 reg = vrpciu_read(sc, VRPCIU_TAW2REG); 200 DUMP_TAW(sc, "TAW2", reg); 201 reg = vrpciu_read(sc, VRPCIU_MIOAWREG); 202 DUMP_MAW(sc, "MIOAW", reg); 203 printf("%s: BUSERRAD =\t0x%08x\n", sc->sc_dev.dv_xname, 204 vrpciu_read(sc, VRPCIU_BUSERRADREG)); 205 printf("%s: INTCNTSTA =\t0x%08x\n", sc->sc_dev.dv_xname, 206 vrpciu_read(sc, VRPCIU_INTCNTSTAREG)); 207 printf("%s: EXACC =\t0x%08x\n", sc->sc_dev.dv_xname, 208 vrpciu_read(sc, VRPCIU_EXACCREG)); 209 printf("%s: RECONT =\t0x%08x\n", sc->sc_dev.dv_xname, 210 vrpciu_read(sc, VRPCIU_RECONTREG)); 211 printf("%s: PCIEN =\t0x%08x\n", sc->sc_dev.dv_xname, 212 vrpciu_read(sc, VRPCIU_ENREG)); 213 printf("%s: CLOCKSEL =\t0x%08x\n", sc->sc_dev.dv_xname, 214 vrpciu_read(sc, VRPCIU_CLKSELREG)); 215 printf("%s: TRDYV =\t0x%08x\n", sc->sc_dev.dv_xname, 216 vrpciu_read(sc, VRPCIU_TRDYVREG)); 217 printf("%s: CLKRUN =\t0x%08x\n", sc->sc_dev.dv_xname, 218 vrpciu_read_2(sc, VRPCIU_CLKRUNREG)); 219 printf("%s: IDREG =\t0x%08x\n", sc->sc_dev.dv_xname, 220 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_ID_REG)); 221 reg = vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG); 222 printf("%s: CSR =\t\t0x%08x\n", sc->sc_dev.dv_xname, reg); 223 vrpciu_write(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG, reg); 224 printf("%s: CSR =\t\t0x%08x\n", sc->sc_dev.dv_xname, 225 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG)); 226 printf("%s: CLASS =\t0x%08x\n", sc->sc_dev.dv_xname, 227 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_CLASS_REG)); 228 printf("%s: BHLC =\t\t0x%08x\n", sc->sc_dev.dv_xname, 229 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_BHLC_REG)); 230 printf("%s: MAIL =\t\t0x%08x\n", sc->sc_dev.dv_xname, 231 vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MAILREG)); 232 printf("%s: MBA1 =\t\t0x%08x\n", sc->sc_dev.dv_xname, 233 vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA1REG)); 234 printf("%s: MBA2 =\t\t0x%08x\n", sc->sc_dev.dv_xname, 235 vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA2REG)); 236 printf("%s: INTR =\t\t0x%08x\n", sc->sc_dev.dv_xname, 237 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG)); 238 #if 0 239 vrpciu_write(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG, 240 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG) | 0x01); 241 printf("%s: INTR =\t\t0x%08x\n", sc->sc_dev.dv_xname, 242 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG)); 243 #endif 244 #endif 245 246 pc->pc_dev = &sc->sc_dev; 247 pc->pc_attach_hook = vrpciu_attach_hook; 248 pc->pc_bus_maxdevs = vrpciu_bus_maxdevs; 249 pc->pc_bus_devorder = vrc4173bcu_pci_bus_devorder; 250 pc->pc_make_tag = vrpciu_make_tag; 251 pc->pc_decompose_tag = vrpciu_decompose_tag; 252 pc->pc_conf_read = vrpciu_conf_read; 253 pc->pc_conf_write = vrpciu_conf_write; 254 pc->pc_intr_map = vrc4173bcu_pci_intr_map; 255 pc->pc_intr_string = vrc4173bcu_pci_intr_string; 256 pc->pc_intr_evcnt = vrc4173bcu_pci_intr_evcnt; 257 pc->pc_intr_establish = vrpciu_intr_establish; 258 pc->pc_intr_disestablish = vrpciu_intr_disestablish; 259 pc->pc_vrcintr_establish = vrpciu_vrcintr_establish; 260 pc->pc_vrcintr_disestablish = vrpciu_vrcintr_disestablish; 261 262 #if 0 263 { 264 int i; 265 266 for (i = 0; i < 8; i++) 267 printf("%s: ID_REG(0, 0, %d) = 0x%08x\n", 268 sc->sc_dev.dv_xname, i, 269 pci_conf_read(pc, pci_make_tag(pc, 0, 0, i), 270 PCI_ID_REG)); 271 } 272 #endif 273 274 #if NPCI > 0 275 memset(&pba, 0, sizeof(pba)); 276 pba.pba_busname = "pci"; 277 278 /* For now, just inherit window mappings set by WinCE. XXX. */ 279 280 iot = hpcmips_alloc_bus_space_tag(); 281 reg = vrpciu_read(sc, VRPCIU_MIOAWREG); 282 snprintf(tmpbuf, sizeof(tmpbuf), "%s/iot", 283 sc->sc_dev.dv_xname); 284 hpcmips_init_bus_space(iot, (struct bus_space_tag_hpcmips *)sc->sc_iot, 285 tmpbuf, VRPCIU_MAW_ADDR(reg), VRPCIU_MAW_SIZE(reg)); 286 pba.pba_iot = &iot->bst; 287 288 /* 289 * Just use system bus space tag. It works since WinCE maps 290 * PCI bus space at same offset. But this isn't right thing 291 * of course. XXX. 292 */ 293 pba.pba_memt = sc->sc_iot; 294 pba.pba_dmat = &hpcmips_default_bus_dma_tag.bdt; 295 pba.pba_bus = 0; 296 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED | 297 PCI_FLAGS_MRL_OKAY; 298 pba.pba_pc = pc; 299 300 config_found(self, &pba, vrpciu_print); 301 #endif 302 } 303 304 #if NPCI > 0 305 static int 306 vrpciu_print(void *aux, const char *pnp) 307 { 308 struct pcibus_attach_args *pba = aux; 309 310 if (pnp != NULL) 311 printf("%s at %s", pba->pba_busname, pnp); 312 else 313 printf(" bus %d", pba->pba_bus); 314 315 return (UNCONF); 316 } 317 #endif 318 319 /* 320 * Handle PCI error interrupts. 321 */ 322 int 323 vrpciu_intr(void *arg) 324 { 325 struct vrpciu_softc *sc = (struct vrpciu_softc *)arg; 326 u_int32_t isr; 327 328 isr = vrpciu_read(sc, VRPCIU_INTCNTSTAREG); 329 printf("%s: vrpciu_intr 0x%08x\n", sc->sc_dev.dv_xname, isr); 330 return ((isr & 0x0f) ? 1 : 0); 331 } 332 333 void 334 vrpciu_attach_hook(struct device *parent, struct device *self, 335 struct pcibus_attach_args *pba) 336 { 337 338 return; 339 } 340 341 int 342 vrpciu_bus_maxdevs(pci_chipset_tag_t pc, int busno) 343 { 344 345 return (32); 346 } 347 348 pcitag_t 349 vrpciu_make_tag(pci_chipset_tag_t pc, int bus, int device, int function) 350 { 351 352 return ((bus << 16) | (device << 11) | (function << 8)); 353 } 354 355 void 356 vrpciu_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp, 357 int *fp) 358 { 359 360 if (bp != NULL) 361 *bp = (tag >> 16) & 0xff; 362 if (dp != NULL) 363 *dp = (tag >> 11) & 0x1f; 364 if (fp != NULL) 365 *fp = (tag >> 8) & 0x07; 366 } 367 368 pcireg_t 369 vrpciu_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) 370 { 371 struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev; 372 u_int32_t val; 373 int bus, device, function; 374 375 pci_decompose_tag(pc, tag, &bus, &device, &function); 376 if (bus == 0) { 377 if (device > 21) 378 return ((pcitag_t)-1); 379 tag = (1 << (device + 11)) | (function << 8); /* Type 0 */ 380 } else 381 tag |= VRPCIU_CONF_TYPE1; 382 383 vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg); 384 val = vrpciu_read(sc, VRPCIU_CONFDREG); 385 #if 0 386 printf("%s: conf_read: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n", 387 sc->sc_dev.dv_xname, (u_int32_t)tag, reg, val); 388 #endif 389 return (val); 390 } 391 392 void 393 vrpciu_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, 394 pcireg_t data) 395 { 396 struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev; 397 int bus, device, function; 398 399 #if 0 400 printf("%s: conf_write: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n", 401 sc->sc_dev.dv_xname, (u_int32_t)tag, reg, (u_int32_t)data); 402 #endif 403 vrpciu_decompose_tag(pc, tag, &bus, &device, &function); 404 if (bus == 0) { 405 if (device > 21) 406 return; 407 tag = (1 << (device + 11)) | (function << 8); /* Type 0 */ 408 } else 409 tag |= VRPCIU_CONF_TYPE1; 410 411 vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg); 412 vrpciu_write(sc, VRPCIU_CONFDREG, data); 413 } 414 415 void * 416 vrpciu_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level, 417 int (*func)(void *), void *arg) 418 { 419 struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev; 420 421 if (ih == -1) 422 return (NULL); 423 DPRINTF(("vrpciu_intr_establish: %p\n", sc)); 424 return (vrc4173bcu_intr_establish(sc->sc_bcu, ih, func, arg)); 425 } 426 427 void 428 vrpciu_intr_disestablish(pci_chipset_tag_t pc, void *cookie) 429 { 430 struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev; 431 432 DPRINTF(("vrpciu_intr_disestablish: %p\n", sc)); 433 vrc4173bcu_intr_disestablish(sc->sc_bcu, cookie); 434 } 435 436 void * 437 vrpciu_vrcintr_establish(pci_chipset_tag_t pc, int port, 438 int (*func)(void *), void *arg) 439 { 440 struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev; 441 struct vrip_softc *vsc = (struct vrip_softc *)sc->sc_vc; 442 void *ih; 443 444 sc->sc_bcu = arg; 445 ih = hpcio_intr_establish(vsc->sc_gpio_chips[VRIP_IOCHIP_VRGIU], 446 port, HPCIO_INTR_LEVEL | HPCIO_INTR_LOW | HPCIO_INTR_HOLD, 447 func, arg); 448 449 return (ih); 450 } 451 452 void 453 vrpciu_vrcintr_disestablish(pci_chipset_tag_t pc, void *ih) 454 { 455 struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev; 456 struct vrip_softc *vsc = (struct vrip_softc *)sc->sc_vc; 457 458 return (vrip_intr_disestablish(vsc->sc_gpio_chips[VRIP_IOCHIP_VRGIU], 459 ih)); 460 } 461
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