btvmei.c revision 1.18
1 /* $NetBSD: btvmei.c,v 1.18 2008/04/10 19:13:36 cegger 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 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 */ 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: btvmei.c,v 1.18 2008/04/10 19:13:36 cegger Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/device.h> 38 #include <sys/proc.h> 39 #include <sys/malloc.h> 40 41 #include <sys/bus.h> 42 #include <sys/extent.h> 43 44 #include <dev/pci/pcireg.h> 45 #include <dev/pci/pcivar.h> 46 #include <dev/pci/pcidevs.h> 47 48 #include <dev/vme/vmereg.h> 49 #include <dev/vme/vmevar.h> 50 51 #include <dev/pci/btvmeireg.h> 52 #include <dev/pci/btvmeivar.h> 53 54 static int b3_617_match(struct device *, struct cfdata *, void *); 55 static void b3_617_attach(struct device *, struct device *, void *); 56 #ifdef notyet 57 static int b3_617_detach(struct device *); 58 #endif 59 void b3_617_slaveconfig(struct device *, struct vme_attach_args *); 60 61 static void b3_617_vmeintr(struct b3_617_softc *, unsigned char); 62 63 /* 64 * mapping ressources, needed for deallocation 65 */ 66 struct b3_617_vmeresc { 67 bus_space_handle_t handle; 68 bus_size_t len; 69 int firstpage, maplen; 70 }; 71 72 CFATTACH_DECL(btvmei, sizeof(struct b3_617_softc), 73 b3_617_match, b3_617_attach, NULL, NULL); 74 75 static int 76 b3_617_match(parent, match, aux) 77 struct device *parent; 78 struct cfdata *match; 79 void *aux; 80 { 81 struct pci_attach_args *pa = aux; 82 83 if ((PCI_VENDOR(pa->pa_id) != PCI_VENDOR_BIT3) 84 || (PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_BIT3_PCIVME617)) 85 return (0); 86 return (1); 87 } 88 89 static void 90 b3_617_attach(parent, self, aux) 91 struct device *parent, *self; 92 void *aux; 93 { 94 struct b3_617_softc *sc = (struct b3_617_softc*)self; 95 struct pci_attach_args *pa = aux; 96 pci_chipset_tag_t pc = pa->pa_pc; 97 98 int rev; 99 100 pci_intr_handle_t ih; 101 const char *intrstr; 102 struct vmebus_attach_args vaa; 103 104 aprint_naive(": VME bus adapter\n"); 105 106 sc->sc_pc = pc; 107 sc->sc_dmat = pa->pa_dmat; 108 109 rev = PCI_REVISION(pci_conf_read(pc, pa->pa_tag, PCI_CLASS_REG)); 110 aprint_normal(": BIT3 PCI-VME 617 rev %d\n", rev); 111 112 /* 113 * Map CSR and mapping table spaces. 114 * Don't map VME window; parts are mapped as needed to 115 * save kernel virtual memory space 116 */ 117 if (pci_mapreg_map(pa, 0x14, 118 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 119 0, &sc->csrt, &sc->csrh, NULL, NULL) && 120 pci_mapreg_map(pa, 0x10, 121 PCI_MAPREG_TYPE_IO, 122 0, &sc->csrt, &sc->csrh, NULL, NULL)) { 123 aprint_error_dev(self, "can't map CSR space\n"); 124 return; 125 } 126 127 if (pci_mapreg_map(pa, 0x18, 128 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 129 0, &sc->mapt, &sc->maph, NULL, NULL)) { 130 aprint_error_dev(self, "can't map map space\n"); 131 return; 132 } 133 134 if (pci_mapreg_info(pc, pa->pa_tag, 0x1c, 135 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 136 &sc->vmepbase, 0, 0)) { 137 aprint_error_dev(self, "can't get VME range\n"); 138 return; 139 } 140 sc->sc_vmet = pa->pa_memt; /* XXX needed for VME mappings */ 141 142 /* Map and establish the interrupt. */ 143 if (pci_intr_map(pa, &ih)) { 144 aprint_error_dev(&sc->sc_dev, "couldn't map interrupt\n"); 145 return; 146 } 147 intrstr = pci_intr_string(pc, ih); 148 /* 149 * Use a low interrupt level (the lowest?). 150 * We will raise before calling a subdevice's handler. 151 */ 152 sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, b3_617_intr, sc); 153 if (sc->sc_ih == NULL) { 154 aprint_error_dev(&sc->sc_dev, "couldn't establish interrupt"); 155 if (intrstr != NULL) 156 aprint_normal(" at %s", intrstr); 157 aprint_normal("\n"); 158 return; 159 } 160 aprint_normal_dev(&sc->sc_dev, "interrupting at %s\n", intrstr); 161 162 if (b3_617_init(sc)) 163 return; 164 165 /* 166 * set up all the tags for use by VME devices 167 */ 168 sc->sc_vct.cookie = self; 169 sc->sc_vct.vct_probe = b3_617_vme_probe; 170 sc->sc_vct.vct_map = b3_617_map_vme; 171 sc->sc_vct.vct_unmap = b3_617_unmap_vme; 172 sc->sc_vct.vct_int_map = b3_617_map_vmeint; 173 sc->sc_vct.vct_int_establish = b3_617_establish_vmeint; 174 sc->sc_vct.vct_int_disestablish = b3_617_disestablish_vmeint; 175 sc->sc_vct.vct_dmamap_create = b3_617_dmamap_create; 176 sc->sc_vct.vct_dmamap_destroy = b3_617_dmamap_destroy; 177 sc->sc_vct.vct_dmamem_alloc = b3_617_dmamem_alloc; 178 sc->sc_vct.vct_dmamem_free = b3_617_dmamem_free; 179 180 vaa.va_vct = &(sc->sc_vct); 181 vaa.va_bdt = pa->pa_dmat; 182 vaa.va_slaveconfig = b3_617_slaveconfig; 183 184 sc->csrwindow.offset = -1; 185 sc->dmawindow24.offset = -1; 186 sc->dmawindow32.offset = -1; 187 config_found(self, &vaa, 0); 188 } 189 190 #ifdef notyet 191 static int 192 b3_617_detach(dev) 193 struct device *dev; 194 { 195 struct b3_617_softc *sc = (struct b3_617_softc *)dev; 196 197 b3_617_halt(sc); 198 199 if (sc->sc_ih) 200 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 201 202 bus_space_unmap(sc->sc_bc, sc->csrbase, 32); 203 bus_space_unmap(sc->sc_bc, sc->mapbase, 64*1024); 204 205 return(0); 206 } 207 #endif 208 209 void 210 b3_617_slaveconfig(dev, va) 211 struct device *dev; 212 struct vme_attach_args *va; 213 { 214 struct b3_617_softc *sc = (struct b3_617_softc *)dev; 215 vme_chipset_tag_t vmect; 216 int i, res; 217 const char *name = 0; /* XXX gcc! */ 218 219 vmect = &sc->sc_vct; 220 if (!va) 221 goto freeit; 222 223 #ifdef DIAGNOSTIC 224 if (vmect != va->va_vct) 225 panic("pcivme_slaveconfig: chipset tag?"); 226 #endif 227 228 for (i = 0; i < va->numcfranges; i++) { 229 res = vme_space_alloc(vmect, va->r[i].offset, 230 va->r[i].size, va->r[i].am); 231 if (res) 232 panic("%s: can't alloc slave window %x/%x/%x", 233 device_xname(dev), va->r[i].offset, 234 va->r[i].size, va->r[i].am); 235 236 switch (va->r[i].am & VME_AM_ADRSIZEMASK) { 237 /* structure assignments! */ 238 case VME_AM_A16: 239 sc->csrwindow = va->r[i]; 240 name = "VME CSR"; 241 break; 242 case VME_AM_A24: 243 sc->dmawindow24 = va->r[i]; 244 name = "A24 DMA"; 245 break; 246 case VME_AM_A32: 247 sc->dmawindow32 = va->r[i]; 248 name = "A32 DMA"; 249 break; 250 } 251 printf("%s: %s window: %x-%x\n", device_xname(dev), 252 name, va->r[i].offset, 253 va->r[i].offset + va->r[i].size - 1); 254 } 255 return; 256 257 freeit: 258 if (sc->csrwindow.offset != -1) 259 vme_space_free(vmect, sc->csrwindow.offset, 260 sc->csrwindow.size, sc->csrwindow.am); 261 if (sc->dmawindow32.offset != -1) 262 vme_space_free(vmect, sc->dmawindow32.offset, 263 sc->dmawindow32.size, sc->dmawindow32.am); 264 if (sc->dmawindow24.offset != -1) 265 vme_space_free(vmect, sc->dmawindow24.offset, 266 sc->dmawindow24.size, sc->dmawindow24.am); 267 } 268 269 int 270 b3_617_reset(sc) 271 struct b3_617_softc *sc; 272 { 273 unsigned char status; 274 275 /* reset sequence, ch 5.2 */ 276 status = read_csr_byte(sc, LOC_STATUS); 277 if (status & LSR_NO_CONNECT) { 278 printf("%s: not connected\n", device_xname(&sc->sc_dev)); 279 return (-1); 280 } 281 status = read_csr_byte(sc, REM_STATUS); /* discard */ 282 write_csr_byte(sc, LOC_CMD1, LC1_CLR_ERROR); 283 status = read_csr_byte(sc, LOC_STATUS); 284 if (status & LSR_CERROR_MASK) { 285 char sbuf[sizeof(BIT3_LSR_BITS) + 64]; 286 287 bitmask_snprintf(status, BIT3_LSR_BITS, sbuf, sizeof(sbuf)); 288 printf("%s: interface error, lsr=%s\n", device_xname(&sc->sc_dev), 289 sbuf); 290 return (-1); 291 } 292 return (0); 293 } 294 295 int 296 b3_617_init(sc) 297 struct b3_617_softc *sc; 298 { 299 unsigned int i; 300 301 if (b3_617_reset(sc)) 302 return (-1); 303 304 /* all maps invalid */ 305 for (i = MR_PCI_VME; i < MR_PCI_VME + MR_PCI_VME_SIZE; i += 4) 306 write_mapmem(sc, i, MR_RAM_INVALID); 307 for (i = MR_VME_PCI; i < MR_VME_PCI + MR_VME_PCI_SIZE; i += 4) 308 write_mapmem(sc, i, MR_RAM_INVALID); 309 for (i = MR_DMA_PCI; i < MR_DMA_PCI + MR_DMA_PCI_SIZE; i += 4) 310 write_mapmem(sc, i, MR_RAM_INVALID); 311 312 /* 313 * set up scatter page allocation control 314 */ 315 sc->vmeext = extent_create("pcivme", MR_PCI_VME, 316 MR_PCI_VME + MR_PCI_VME_SIZE - 1, M_DEVBUF, 317 sc->vmemap, sizeof(sc->vmemap), 318 EX_NOCOALESCE); 319 #if 0 320 sc->pciext = extent_create("vmepci", MR_VME_PCI, 321 MR_VME_PCI + MR_VME_PCI_SIZE - 1, M_DEVBUF, 322 sc->pcimap, sizeof(sc->pcimap), 323 EX_NOCOALESCE); 324 sc->dmaext = extent_create("dmapci", MR_DMA_PCI, 325 MR_DMA_PCI + MR_DMA_PCI_SIZE - 1, M_DEVBUF, 326 sc->dmamap, sizeof(sc->dmamap), 327 EX_NOCOALESCE); 328 #endif 329 330 /* 331 * init int handler queue, 332 * enable interrupts if PCI interrupt available 333 */ 334 TAILQ_INIT(&(sc->intrhdls)); 335 sc->strayintrs = 0; 336 337 if (sc->sc_ih) 338 write_csr_byte(sc, LOC_INT_CTRL, LIC_INT_ENABLE); 339 /* no error ints */ 340 write_csr_byte(sc, REM_CMD2, 0); /* enables VME IRQ */ 341 342 return (0); 343 } 344 345 #ifdef notyet /* for detach */ 346 void 347 b3_617_halt(sc) 348 struct b3_617_softc *sc; 349 { 350 /* 351 * because detach code checks for existence of children, 352 * all ressources (mappings, VME IRQs, DMA requests) 353 * should be deallocated at this point 354 */ 355 356 /* disable IRQ */ 357 write_csr_byte(sc, LOC_INT_CTRL, 0); 358 } 359 #endif 360 361 static void 362 b3_617_vmeintr(sc, lstat) 363 struct b3_617_softc *sc; 364 unsigned char lstat; 365 { 366 int level; 367 368 for (level = 7; level >= 1; level--) { 369 unsigned char vector; 370 struct b3_617_vmeintrhand *ih; 371 int found; 372 373 if (!(lstat & (1 << level))) 374 continue; 375 376 write_csr_byte(sc, REM_CMD1, level); 377 vector = read_csr_byte(sc, REM_IACK); 378 379 found = 0; 380 381 for (ih = sc->intrhdls.tqh_first; ih; 382 ih = ih->ih_next.tqe_next) { 383 if ((ih->ih_level == level) && 384 ((ih->ih_vector == -1) || 385 (ih->ih_vector == vector))) { 386 int s, res; 387 /* 388 * We should raise the interrupt level 389 * to ih->ih_prior here. How to do this 390 * machine-independently? 391 * To be safe, raise to the maximum. 392 */ 393 s = splhigh(); 394 found |= (res = (*(ih->ih_fun))(ih->ih_arg)); 395 splx(s); 396 if (res) 397 ih->ih_count++; 398 if (res == 1) 399 break; 400 } 401 } 402 if (!found) 403 sc->strayintrs++; 404 } 405 } 406 407 #define sc ((struct b3_617_softc*)vsc) 408 409 int 410 b3_617_map_vme(vsc, vmeaddr, len, am, datasizes, swap, tag, handle, resc) 411 void *vsc; 412 vme_addr_t vmeaddr; 413 vme_size_t len; 414 vme_am_t am; 415 vme_datasize_t datasizes; 416 vme_swap_t swap; 417 bus_space_tag_t *tag; 418 bus_space_handle_t *handle; 419 vme_mapresc_t *resc; 420 { 421 vme_addr_t vmebase, vmeend, va; 422 unsigned long maplen, first, i; 423 u_int32_t mapreg; 424 bus_addr_t pcibase; 425 int res; 426 struct b3_617_vmeresc *r; 427 428 /* first mapped address */ 429 vmebase = vmeaddr & ~(VME_PAGESIZE - 1); 430 /* base of last mapped page */ 431 vmeend = (vmeaddr + len - 1) & ~(VME_PAGESIZE - 1); 432 /* bytes in scatter table required */ 433 maplen = ((vmeend - vmebase) / VME_PAGESIZE + 1) * 4; 434 435 if (extent_alloc(sc->vmeext, maplen, 4, 0, EX_FAST, &first)) 436 return (ENOMEM); 437 438 /* 439 * set up adapter mapping registers 440 */ 441 mapreg = (am << MR_AMOD_SHIFT) | MR_FC_RRAM | swap; 442 443 for (i = first, va = vmebase; 444 i < first + maplen; 445 i += 4, va += VME_PAGESIZE) { 446 write_mapmem(sc, i, mapreg | va); 447 #ifdef BIT3DEBUG 448 printf("mapreg@%lx=%x\n", i, read_mapmem(sc, i)); 449 #endif 450 } 451 452 #ifdef DIAGNOSTIC 453 if (va != vmeend + VME_PAGESIZE) 454 panic("b3_617_map_pci_vme: botch"); 455 #endif 456 /* 457 * map needed range in PCI space 458 */ 459 pcibase = sc->vmepbase + (first - MR_PCI_VME) / 4 * VME_PAGESIZE 460 + (vmeaddr & (VME_PAGESIZE - 1)); 461 462 if ((res = bus_space_map(sc->sc_vmet, pcibase, len, 0, handle))) { 463 for (i = first; i < first + maplen; i += 4) 464 write_mapmem(sc, i, MR_RAM_INVALID); 465 extent_free(sc->vmeext, first, maplen, 0); 466 return (res); 467 } 468 469 *tag = sc->sc_vmet; 470 471 /* 472 * save all data needed for later unmapping 473 */ 474 r = malloc(sizeof(*r), M_DEVBUF, M_NOWAIT); /* XXX check! */ 475 r->handle = *handle; 476 r->len = len; 477 r->firstpage = first; 478 r->maplen = maplen; 479 *resc = r; 480 return (0); 481 } 482 483 void 484 b3_617_unmap_vme(vsc, resc) 485 void *vsc; 486 vme_mapresc_t resc; 487 { 488 unsigned long i; 489 struct b3_617_vmeresc *r = resc; 490 491 /* unmap PCI window */ 492 bus_space_unmap(sc->sc_vmet, r->handle, r->len); 493 494 for (i = r->firstpage; i < r->firstpage + r->maplen; i += 4) 495 write_mapmem(sc, i, MR_RAM_INVALID); 496 497 extent_free(sc->vmeext, r->firstpage, r->maplen, 0); 498 499 free(r, M_DEVBUF); 500 } 501 502 int 503 b3_617_vme_probe(vsc, addr, len, am, datasize, callback, cbarg) 504 void *vsc; 505 vme_addr_t addr; 506 vme_size_t len; 507 vme_am_t am; 508 vme_datasize_t datasize; 509 int (*callback)(void *, bus_space_tag_t, bus_space_handle_t); 510 void *cbarg; 511 { 512 bus_space_tag_t tag; 513 bus_space_handle_t handle; 514 vme_mapresc_t resc; 515 int res, i; 516 volatile u_int32_t dummy; 517 int status; 518 519 res = b3_617_map_vme(vsc, addr, len, am, 0, 0, 520 &tag, &handle, &resc); 521 if (res) 522 return (res); 523 524 if (read_csr_byte(sc, LOC_STATUS) & LSR_ERROR_MASK) { 525 printf("b3_617_vme_badaddr: error bit not clean - resetting\n"); 526 write_csr_byte(sc, LOC_CMD1, LC1_CLR_ERROR); 527 } 528 529 if (callback) 530 res = (*callback)(cbarg, tag, handle); 531 else { 532 for (i = 0; i < len;) { 533 switch (datasize) { 534 case VME_D8: 535 dummy = bus_space_read_1(tag, handle, i); 536 i++; 537 break; 538 case VME_D16: 539 dummy = bus_space_read_2(tag, handle, i); 540 i += 2; 541 break; 542 case VME_D32: 543 dummy = bus_space_read_4(tag, handle, i); 544 i += 4; 545 break; 546 default: 547 panic("b3_617_vme_probe: invalid datasize %x", 548 datasize); 549 } 550 } 551 } 552 553 if ((status = read_csr_byte(sc, LOC_STATUS)) & LSR_ERROR_MASK) { 554 #ifdef BIT3DEBUG 555 printf("b3_617_vme_badaddr: caught error %x\n", status); 556 #endif 557 write_csr_byte(sc, LOC_CMD1, LC1_CLR_ERROR); 558 res = EIO; 559 } 560 561 b3_617_unmap_vme(vsc, resc); 562 return (res); 563 } 564 565 int 566 b3_617_map_vmeint(vsc, level, vector, handlep) 567 void *vsc; 568 int level, vector; 569 vme_intr_handle_t *handlep; 570 { 571 if (!sc->sc_ih) { 572 printf("%s: b3_617_map_vmeint: no IRQ\n", 573 device_xname(&sc->sc_dev)); 574 return (ENXIO); 575 } 576 /* 577 * We should check whether the interface can pass this interrupt 578 * level at all, but we don't know much about the jumper setting. 579 */ 580 *handlep = (void *)(long)((level << 8) | vector); /* XXX */ 581 return (0); 582 } 583 584 void * 585 b3_617_establish_vmeint(vsc, handle, prior, func, arg) 586 void *vsc; 587 vme_intr_handle_t handle; 588 int prior; 589 int (*func)(void *); 590 void *arg; 591 { 592 struct b3_617_vmeintrhand *ih; 593 long lv; 594 int s; 595 596 /* no point in sleeping unless someone can free memory. */ 597 ih = malloc(sizeof *ih, M_DEVBUF, cold ? M_NOWAIT : M_WAITOK); 598 if (ih == NULL) 599 panic("b3_617_map_vmeint: can't malloc handler info"); 600 601 lv = (long)handle; /* XXX */ 602 603 ih->ih_fun = func; 604 ih->ih_arg = arg; 605 ih->ih_level = lv >> 8; 606 ih->ih_vector = lv & 0xff; 607 ih->ih_prior = prior; 608 ih->ih_count = 0; 609 610 s = splhigh(); 611 TAILQ_INSERT_TAIL(&(sc->intrhdls), ih, ih_next); 612 splx(s); 613 614 return (ih); 615 } 616 617 void 618 b3_617_disestablish_vmeint(vsc, cookie) 619 void *vsc; 620 void *cookie; 621 { 622 struct b3_617_vmeintrhand *ih = cookie; 623 int s; 624 625 if (!ih) { 626 printf("b3_617_unmap_vmeint: NULL arg\n"); 627 return; 628 } 629 630 s = splhigh(); 631 TAILQ_REMOVE(&(sc->intrhdls), ih, ih_next); 632 splx(s); 633 634 free(ih, M_DEVBUF); 635 } 636 637 int 638 b3_617_intr(vsc) 639 void *vsc; 640 { 641 int handled = 0; 642 643 /* follows ch. 5.5.5 (reordered for speed) */ 644 while (read_csr_byte(sc, LOC_INT_CTRL) & LIC_INT_PENDING) { 645 unsigned char lstat; 646 647 handled = 1; 648 649 /* no error interrupts! */ 650 651 lstat = read_csr_byte(sc, LDMA_CMD); 652 if ((lstat & LDC_DMA_DONE) && (lstat & LDC_DMA_INT_ENABLE)) { 653 /* DMA done indicator flag */ 654 write_csr_byte(sc, LDMA_CMD, lstat & (~LDC_DMA_DONE)); 655 #if 0 656 b3_617_cntlrdma_done(sc); 657 #endif 658 continue; 659 } 660 661 lstat = read_csr_byte(sc, LOC_INT_STATUS); 662 if (lstat & LIS_CINT_MASK) { 663 /* VME backplane interrupt, ch. 5.5.3 */ 664 b3_617_vmeintr(sc, lstat); 665 } 666 667 /* for now, ignore "mailbox interrupts" */ 668 669 lstat = read_csr_byte(sc, LOC_STATUS); 670 if (lstat & LSR_PR_STATUS) { 671 /* PR interrupt received from REMOTE */ 672 write_csr_byte(sc, LOC_CMD1, LC1_CLR_PR_INT); 673 continue; 674 } 675 676 lstat = read_csr_byte(sc, REM_STATUS); 677 if (lstat & RSR_PT_STATUS) { 678 /* PT interrupt is set */ 679 write_csr_byte(sc, REM_CMD1, RC1_CLR_PT_INT); 680 continue; 681 } 682 } 683 return (handled); 684 } 685 686 int 687 b3_617_dmamap_create(vsc, len, am, datasize, swap, 688 nsegs, segsz, bound, 689 flags, mapp) 690 void *vsc; 691 vme_size_t len; 692 vme_am_t am; 693 vme_datasize_t datasize; 694 vme_swap_t swap; 695 int nsegs; 696 vme_size_t segsz; 697 vme_addr_t bound; 698 int flags; 699 bus_dmamap_t *mapp; 700 { 701 return (EINVAL); 702 } 703 704 void 705 b3_617_dmamap_destroy(vsc, map) 706 void *vsc; 707 bus_dmamap_t map; 708 { 709 } 710 711 int 712 b3_617_dmamem_alloc(vsc, len, am, datasizes, swap, 713 segs, nsegs, rsegs, flags) 714 void *vsc; 715 vme_size_t len; 716 vme_am_t am; 717 vme_datasize_t datasizes; 718 vme_swap_t swap; 719 bus_dma_segment_t *segs; 720 int nsegs; 721 int *rsegs; 722 int flags; 723 { 724 return (EINVAL); 725 } 726 727 void 728 b3_617_dmamem_free(vsc, segs, nsegs) 729 void *vsc; 730 bus_dma_segment_t *segs; 731 int nsegs; 732 { 733 } 734 735 #undef sc 736
Indexes created Wed Oct 01 07:09:59 GMT 2025