Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/dev/pci/btvmeii.c
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
1 /* $NetBSD: btvmeii.c,v 1.9 2003/01/31 00:07:40 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1999 5 * Matthias Drochner. 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 AUTHOR 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 AUTHOR 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 /* 30 * Driver for the Bit3/SBS PCI-VME adapter Model 2706. 31 * Uses the common Tundra Universe code. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: btvmeii.c,v 1.9 2003/01/31 00:07:40 thorpej Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/device.h> 41 42 #include <dev/pci/pcireg.h> 43 #include <dev/pci/pcivar.h> 44 #include <dev/pci/pcidevs.h> 45 46 #include <machine/bus.h> 47 #include <sys/malloc.h> 48 #include <sys/extent.h> 49 50 #include <dev/pci/ppbreg.h> 51 52 #include <dev/vme/vmereg.h> 53 #include <dev/vme/vmevar.h> 54 55 #include <dev/pci/universe_pci_var.h> 56 57 static int b3_2706_match __P((struct device *, struct cfdata *, void *)); 58 static void b3_2706_attach __P((struct device *, struct device *, void *)); 59 60 /* exported via tag structs */ 61 int b3_2706_map_vme __P((void *, vme_addr_t, vme_size_t, 62 vme_am_t, vme_datasize_t, vme_swap_t, 63 bus_space_tag_t *, bus_space_handle_t *, vme_mapresc_t*)); 64 void b3_2706_unmap_vme __P((void *, vme_mapresc_t)); 65 66 int b3_2706_vme_probe __P((void *, vme_addr_t, vme_size_t, vme_am_t, 67 vme_datasize_t, 68 int (*)(void *, bus_space_tag_t, bus_space_handle_t), 69 void *)); 70 71 int b3_2706_map_vmeint __P((void *, int, int, vme_intr_handle_t *)); 72 void *b3_2706_establish_vmeint __P((void *, vme_intr_handle_t, int, 73 int (*)(void *), void *)); 74 void b3_2706_disestablish_vmeint __P((void *, void *)); 75 void b3_2706_vmeint __P((void *, int, int)); 76 77 int b3_2706_dmamap_create __P((void *, vme_size_t, 78 vme_am_t, vme_datasize_t, vme_swap_t, 79 int, vme_size_t, vme_addr_t, 80 int, bus_dmamap_t *)); 81 void b3_2706_dmamap_destroy __P((void *, bus_dmamap_t)); 82 83 int b3_2706_dmamem_alloc __P((void *, vme_size_t, 84 vme_am_t, vme_datasize_t, vme_swap_t, 85 bus_dma_segment_t *, int, int *, int)); 86 void b3_2706_dmamem_free __P((void *, bus_dma_segment_t *, int)); 87 88 struct b3_2706_vmemaprescs { 89 int wnd; 90 unsigned long pcibase, maplen; 91 bus_space_handle_t handle; 92 u_int32_t len; 93 }; 94 95 struct b3_2706_vmeintrhand { 96 TAILQ_ENTRY(b3_2706_vmeintrhand) ih_next; 97 int (*ih_fun) __P((void*)); 98 void *ih_arg; 99 int ih_level; 100 int ih_vector; 101 int ih_prior; 102 u_long ih_count; 103 }; 104 105 struct b3_2706_softc { 106 struct device sc_dev; 107 struct univ_pci_data univdata; 108 bus_space_tag_t swapt, vmet; 109 bus_space_handle_t swaph; 110 bus_addr_t vmepbase; 111 112 int windowused[8]; 113 struct b3_2706_vmemaprescs vmemaprescs[8]; 114 struct extent *vmeext; 115 char vmemap[EXTENT_FIXED_STORAGE_SIZE(8)]; 116 117 struct vme_chipset_tag sc_vct; 118 119 /* list of VME interrupt handlers */ 120 TAILQ_HEAD(, b3_2706_vmeintrhand) intrhdls; 121 int strayintrs; 122 }; 123 124 CFATTACH_DECL(btvmeii, sizeof(struct b3_2706_softc), 125 b3_2706_match, b3_2706_attach, NULL, NULL); 126 127 /* 128 * The adapter consists of a DEC PCI-PCI-bridge with two 129 * PCI devices behind it: A Tundra Universe as device 4 and 130 * some FPGA with glue logics as device 8. 131 * As long as the autoconf code doesn't provide more support 132 * for dependant devices, we have to duplicate a part of the 133 * "ppb" functions here. 134 */ 135 136 static int 137 b3_2706_match(parent, match, aux) 138 struct device *parent; 139 struct cfdata *match; 140 void *aux; 141 { 142 struct pci_attach_args *pa = aux; 143 pci_chipset_tag_t pc = pa->pa_pc; 144 int secbus; 145 pcitag_t tag; 146 pcireg_t id; 147 148 if ((PCI_VENDOR(pa->pa_id) != PCI_VENDOR_DEC) 149 || (PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_DEC_21152)) 150 return (0); 151 152 secbus = PPB_BUSINFO_SECONDARY(pci_conf_read(pc, pa->pa_tag, 153 PPB_REG_BUSINFO)); 154 if (secbus == 0) { 155 printf("b3_2706_match: ppb not configured\n"); 156 return (0); 157 } 158 159 tag = pci_make_tag(pc, secbus, 4, 0); 160 id = pci_conf_read(pc, tag, PCI_ID_REG); 161 162 if ((PCI_VENDOR(id) != PCI_VENDOR_NEWBRIDGE) 163 || (PCI_PRODUCT(id) != PCI_PRODUCT_NEWBRIDGE_CA91CX42)) { 164 #ifdef DEBUG 165 printf("b3_2706_match: no tundra\n"); 166 #endif 167 return (0); 168 } 169 170 tag = pci_make_tag(pc, secbus, 8, 0); 171 id = pci_conf_read(pc, tag, PCI_ID_REG); 172 173 if ((PCI_VENDOR(id) != PCI_VENDOR_BIT3) 174 || (PCI_PRODUCT(id) != PCI_PRODUCT_BIT3_PCIVME2706)) { 175 #ifdef DEBUG 176 printf("b3_2706_match: no bit3 chip\n"); 177 #endif 178 return (0); 179 } 180 181 return (5); /* beat "ppb" */ 182 } 183 184 static void 185 b3_2706_attach(parent, self, aux) 186 struct device *parent, *self; 187 void *aux; 188 { 189 struct b3_2706_softc *sc = (struct b3_2706_softc *)self; 190 struct pci_attach_args *pa = aux; 191 pci_chipset_tag_t pc = pa->pa_pc; 192 struct pci_attach_args aa; 193 int secbus; 194 pcireg_t intr; 195 pcitag_t tag; 196 bus_addr_t swappbase; 197 int i; 198 199 struct vmebus_attach_args vaa; 200 201 aprint_naive(": VME bus adapter\n"); 202 aprint_normal("\n"); 203 204 secbus = PPB_BUSINFO_SECONDARY(pci_conf_read(pc, pa->pa_tag, 205 PPB_REG_BUSINFO)); 206 207 memcpy(&aa, pa, sizeof(struct pci_attach_args)); 208 aa.pa_device = 4; 209 aa.pa_function = 0; 210 aa.pa_tag = pci_make_tag(pc, secbus, 4, 0); 211 aa.pa_intrswiz += 4; 212 intr = pci_conf_read(pc, aa.pa_tag, PCI_INTERRUPT_REG); 213 /* 214 * swizzle it based on the number of 215 * busses we're behind and our device 216 * number. 217 */ 218 aa.pa_intrpin = ((1 + aa.pa_intrswiz - 1) % 4) + 1; 219 aa.pa_intrline = PCI_INTERRUPT_LINE(intr); 220 221 if (univ_pci_attach(&sc->univdata, &aa, self->dv_xname, 222 b3_2706_vmeint, sc)) { 223 aprint_error("%s: error initializing universe chip\n", 224 self->dv_xname); 225 return; 226 } 227 228 /* 229 * don't waste KVM - the byteswap register is aliased in 230 * a 512k window, we need it only once 231 */ 232 tag = pci_make_tag(pc, secbus, 8, 0); 233 sc->swapt = pa->pa_memt; 234 if (pci_mapreg_info(pc, tag, 0x10, 235 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 236 &swappbase, 0, 0) || 237 bus_space_map(sc->swapt, swappbase, 4, 0, &sc->swaph)) { 238 aprint_error("%s: can't map byteswap register\n", 239 self->dv_xname); 240 return; 241 } 242 /* 243 * Set up cycle specific byteswap mode. 244 * XXX Readback yields "all-ones" for me, and it doesn't seem 245 * to matter what I write into the register - the data don't 246 * get swapped. Adapter fault or documentation bug? 247 */ 248 bus_space_write_4(sc->swapt, sc->swaph, 0, 0x00000490); 249 250 /* VME space is mapped as needed */ 251 sc->vmet = pa->pa_memt; 252 if (pci_mapreg_info(pc, tag, 0x14, 253 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 254 &sc->vmepbase, 0, 0)) { 255 aprint_error("%s: VME range not assigned\n", self->dv_xname); 256 return; 257 } 258 #ifdef BIT3DEBUG 259 aprint_debug("%s: VME window @%lx\n", self->dv_xname, 260 (long)sc->vmepbase); 261 #endif 262 263 for (i = 0; i < 8; i++) { 264 sc->windowused[i] = 0; 265 } 266 sc->vmeext = extent_create("pcivme", sc->vmepbase, 267 sc->vmepbase + 32*1024*1024 - 1, M_DEVBUF, 268 sc->vmemap, sizeof(sc->vmemap), 269 EX_NOCOALESCE); 270 271 sc->sc_vct.cookie = self; 272 sc->sc_vct.vct_probe = b3_2706_vme_probe; 273 sc->sc_vct.vct_map = b3_2706_map_vme; 274 sc->sc_vct.vct_unmap = b3_2706_unmap_vme; 275 sc->sc_vct.vct_int_map = b3_2706_map_vmeint; 276 sc->sc_vct.vct_int_establish = b3_2706_establish_vmeint; 277 sc->sc_vct.vct_int_disestablish = b3_2706_disestablish_vmeint; 278 sc->sc_vct.vct_dmamap_create = b3_2706_dmamap_create; 279 sc->sc_vct.vct_dmamap_destroy = b3_2706_dmamap_destroy; 280 sc->sc_vct.vct_dmamem_alloc = b3_2706_dmamem_alloc; 281 sc->sc_vct.vct_dmamem_free = b3_2706_dmamem_free; 282 283 vaa.va_vct = &(sc->sc_vct); 284 vaa.va_bdt = pa->pa_dmat; /* XXX */ 285 vaa.va_slaveconfig = 0; /* XXX CSR window? */ 286 287 config_found(self, &vaa, 0); 288 } 289 290 #define sc ((struct b3_2706_softc*)vsc) 291 292 int 293 b3_2706_map_vme(vsc, vmeaddr, len, am, datasizes, swap, tag, handle, resc) 294 void *vsc; 295 vme_addr_t vmeaddr; 296 vme_size_t len; 297 vme_am_t am; 298 vme_datasize_t datasizes; 299 vme_swap_t swap; 300 bus_space_tag_t *tag; 301 bus_space_handle_t *handle; 302 vme_mapresc_t *resc; 303 { 304 int idx, i, wnd, res; 305 unsigned long boundary, maplen, pcibase; 306 vme_addr_t vmebase, vmeend; 307 static int windoworder[8] = {1, 2, 3, 5, 6, 7, 0, 4}; 308 309 /* prefer windows with fine granularity for small mappings */ 310 wnd = -1; 311 if (len <= 32*1024) 312 idx = 6; 313 else 314 idx = 0; 315 for (i = 0; i < 8; i++) { 316 if (!sc->windowused[windoworder[idx]]) { 317 wnd = windoworder[idx]; 318 sc->windowused[wnd] = 1; 319 break; 320 } 321 idx = (idx + 1) % 8; 322 } 323 if (wnd == -1) 324 return (ENOSPC); 325 326 boundary = (wnd & 3) ? 64*1024 : 4*1024; 327 328 /* first mapped address */ 329 vmebase = vmeaddr & ~(boundary - 1); 330 /* base of last mapped page */ 331 vmeend = (vmeaddr + len - 1) & ~(boundary - 1); 332 /* bytes in outgoing window required */ 333 maplen = vmeend - vmebase + boundary; 334 335 if (extent_alloc(sc->vmeext, maplen, boundary, 0, EX_FAST, &pcibase)) { 336 sc->windowused[wnd] = 0; 337 return (ENOMEM); 338 } 339 340 res = univ_pci_mapvme(&sc->univdata, wnd, vmebase, maplen, 341 am, datasizes, pcibase); 342 if (res) { 343 extent_free(sc->vmeext, pcibase, maplen, 0); 344 sc->windowused[wnd] = 0; 345 return (res); 346 } 347 348 res = bus_space_map(sc->vmet, pcibase + (vmeaddr - vmebase), len, 349 0, handle); 350 if (res) { 351 univ_pci_unmapvme(&sc->univdata, wnd); 352 extent_free(sc->vmeext, pcibase, maplen, 0); 353 sc->windowused[wnd] = 0; 354 return (res); 355 } 356 357 *tag = sc->vmet; 358 359 /* 360 * save all data needed for later unmapping 361 */ 362 sc->vmemaprescs[wnd].wnd = wnd; 363 sc->vmemaprescs[wnd].pcibase = pcibase; 364 sc->vmemaprescs[wnd].maplen = maplen; 365 sc->vmemaprescs[wnd].handle = *handle; 366 sc->vmemaprescs[wnd].len = len; 367 *resc = &sc->vmemaprescs[wnd]; 368 return (0); 369 } 370 371 void 372 b3_2706_unmap_vme(vsc, resc) 373 void *vsc; 374 vme_mapresc_t resc; 375 { 376 struct b3_2706_vmemaprescs *r = resc; 377 378 bus_space_unmap(sc->vmet, r->handle, r->len); 379 extent_free(sc->vmeext, r->pcibase, r->maplen, 0); 380 381 if (!sc->windowused[r->wnd]) 382 panic("b3_2706_unmap_vme: bad window"); 383 univ_pci_unmapvme(&sc->univdata, r->wnd); 384 sc->windowused[r->wnd] = 0; 385 } 386 387 int 388 b3_2706_vme_probe(vsc, addr, len, am, datasize, callback, cbarg) 389 void *vsc; 390 vme_addr_t addr; 391 vme_size_t len; 392 vme_am_t am; 393 vme_datasize_t datasize; 394 int (*callback) __P((void *, bus_space_tag_t, bus_space_handle_t)); 395 void *cbarg; 396 { 397 bus_space_tag_t tag; 398 bus_space_handle_t handle; 399 vme_mapresc_t resc; 400 int res, i; 401 volatile u_int32_t dummy; 402 403 res = b3_2706_map_vme(vsc, addr, len, am, datasize, 0, 404 &tag, &handle, &resc); 405 if (res) 406 return (res); 407 408 if (univ_pci_vmebuserr(&sc->univdata, 1)) 409 printf("b3_2706_vme_badaddr: TA bit not clean - reset\n"); 410 411 if (callback) 412 res = (*callback)(cbarg, tag, handle); 413 else { 414 for (i = 0; i < len;) { 415 switch (datasize) { 416 case VME_D8: 417 dummy = bus_space_read_1(tag, handle, i); 418 i++; 419 break; 420 case VME_D16: 421 dummy = bus_space_read_2(tag, handle, i); 422 i += 2; 423 break; 424 case VME_D32: 425 dummy = bus_space_read_4(tag, handle, i); 426 i += 4; 427 break; 428 default: 429 panic("b3_2706_vme_probe: invalid datasize %x", 430 datasize); 431 } 432 } 433 } 434 435 if (univ_pci_vmebuserr(&sc->univdata, 0)) { 436 #ifdef BIT3DEBUG 437 printf("b3_2706_vme_badaddr: caught TA\n"); 438 #endif 439 univ_pci_vmebuserr(&sc->univdata, 1); 440 res = EIO; 441 } 442 443 b3_2706_unmap_vme(vsc, resc); 444 return (res); 445 } 446 447 int 448 b3_2706_map_vmeint(vsc, level, vector, handlep) 449 void *vsc; 450 int level, vector; 451 vme_intr_handle_t *handlep; 452 { 453 454 *handlep = (void *)(long)((level << 8) | vector); /* XXX */ 455 return (0); 456 } 457 458 void * 459 b3_2706_establish_vmeint(vsc, handle, prior, func, arg) 460 void *vsc; 461 vme_intr_handle_t handle; 462 int prior; 463 int (*func) __P((void *)); 464 void *arg; 465 { 466 struct b3_2706_vmeintrhand *ih; 467 long lv; 468 int s; 469 470 /* no point in sleeping unless someone can free memory. */ 471 ih = malloc(sizeof *ih, M_DEVBUF, cold ? M_NOWAIT : M_WAITOK); 472 if (ih == NULL) 473 panic("b3_2706_map_vmeint: can't malloc handler info"); 474 475 lv = (long)handle; /* XXX */ 476 477 ih->ih_fun = func; 478 ih->ih_arg = arg; 479 ih->ih_level = lv >> 8; 480 ih->ih_vector = lv & 0xff; 481 ih->ih_prior = prior; 482 ih->ih_count = 0; 483 484 s = splhigh(); 485 TAILQ_INSERT_TAIL(&(sc->intrhdls), ih, ih_next); 486 splx(s); 487 488 return (ih); 489 } 490 491 void 492 b3_2706_disestablish_vmeint(vsc, cookie) 493 void *vsc; 494 void *cookie; 495 { 496 struct b3_2706_vmeintrhand *ih = cookie; 497 int s; 498 499 if (!ih) { 500 printf("b3_2706_unmap_vmeint: NULL arg\n"); 501 return; 502 } 503 504 s = splhigh(); 505 TAILQ_REMOVE(&(sc->intrhdls), ih, ih_next); 506 splx(s); 507 508 free(ih, M_DEVBUF); 509 } 510 511 void 512 b3_2706_vmeint(vsc, level, vector) 513 void *vsc; 514 int level, vector; 515 { 516 struct b3_2706_vmeintrhand *ih; 517 int found; 518 519 #ifdef BIT3DEBUG 520 printf("b3_2706_vmeint: VME IRQ %d, vec %x\n", level, vector); 521 #endif 522 found = 0; 523 524 for (ih = sc->intrhdls.tqh_first; ih; 525 ih = ih->ih_next.tqe_next) { 526 if ((ih->ih_level == level) && 527 ((ih->ih_vector == -1) || 528 (ih->ih_vector == vector))) { 529 int s, res; 530 /* 531 * We should raise the interrupt level 532 * to ih->ih_prior here. How to do this 533 * machine-independantly? 534 * To be safe, raise to the maximum. 535 */ 536 s = splhigh(); 537 found |= (res = (*(ih->ih_fun))(ih->ih_arg)); 538 splx(s); 539 if (res) 540 ih->ih_count++; 541 if (res == 1) 542 break; 543 } 544 } 545 if (!found) 546 sc->strayintrs++; 547 } 548 549 int 550 b3_2706_dmamap_create(vsc, len, am, datasize, swap, 551 nsegs, segsz, bound, 552 flags, mapp) 553 void *vsc; 554 vme_size_t len; 555 vme_am_t am; 556 vme_datasize_t datasize; 557 vme_swap_t swap; 558 int nsegs; 559 vme_size_t segsz; 560 vme_addr_t bound; 561 int flags; 562 bus_dmamap_t *mapp; 563 { 564 return (EINVAL); 565 } 566 567 void 568 b3_2706_dmamap_destroy(vsc, map) 569 void *vsc; 570 bus_dmamap_t map; 571 { 572 } 573 574 int 575 b3_2706_dmamem_alloc(vsc, len, am, datasizes, swap, segs, nsegs, rsegs, flags) 576 void *vsc; 577 vme_size_t len; 578 vme_am_t am; 579 vme_datasize_t datasizes; 580 vme_swap_t swap; 581 bus_dma_segment_t *segs; 582 int nsegs; 583 int *rsegs; 584 int flags; 585 { 586 return (EINVAL); 587 } 588 589 void 590 b3_2706_dmamem_free(vsc, segs, nsegs) 591 void *vsc; 592 bus_dma_segment_t *segs; 593 int nsegs; 594 { 595 } 596 597 #undef sc
Cache object: 8b5b94a6041010d5027c69512394bbeb
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]