oboe.c revision 1.4
1 /* $NetBSD: oboe.c,v 1.4 2001/12/05 15:51:11 augustss Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jan Sparud. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Toshiba OBOE IrDA SIR/FIR driver. 41 * 42 * Based on information from the Linux driver, thus the magic hex numbers. 43 */ 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/device.h> 49 #include <sys/malloc.h> 50 #include <sys/tty.h> 51 #include <sys/vnode.h> 52 #include <sys/poll.h> 53 54 #include <dev/ir/ir.h> 55 #include <dev/ir/irdaio.h> 56 #include <dev/ir/irframevar.h> 57 #include <dev/ir/sir.h> 58 59 #include <dev/pci/pcidevs.h> 60 #include <dev/pci/pcivar.h> 61 62 #include <machine/bus.h> 63 #include <machine/intr.h> 64 #include <uvm/uvm_extern.h> 65 66 #include <dev/pci/oboereg.h> 67 68 int oboe_match(struct device *parent, struct cfdata *match, void *aux); 69 void oboe_attach(struct device *parent, struct device *self, void *aux); 70 int oboe_activate(struct device *self, enum devact act); 71 int oboe_detach(struct device *self, int flags); 72 73 int oboe_open(void *h, int flag, int mode, struct proc *p); 74 int oboe_close(void *h, int flag, int mode, struct proc *p); 75 int oboe_read(void *h, struct uio *uio, int flag); 76 int oboe_write(void *h, struct uio *uio, int flag); 77 int oboe_set_params(void *h, struct irda_params *params); 78 int oboe_get_speeds(void *h, int *speeds); 79 int oboe_get_turnarounds(void *h, int *times); 80 int oboe_poll(void *h, int events, struct proc *p); 81 82 #ifdef OBOE_DEBUG 83 #define DPRINTF(x) if (oboedebug) printf x 84 int oboedebug = 1; 85 #else 86 #define DPRINTF(x) 87 #endif 88 89 struct oboe_dma; 90 91 struct oboe_softc { 92 struct device sc_dev; 93 struct device *sc_child; 94 struct pci_attach_args sc_pa; 95 pci_intr_handle_t * sc_ih; 96 unsigned int sc_revision; /* PCI Revision ID */ 97 /* I/O Base device */ 98 bus_space_tag_t sc_iot; 99 bus_space_handle_t sc_ioh; 100 bus_dma_tag_t sc_dmatag; 101 struct selinfo sc_rsel; 102 103 int sc_state; 104 #define OBOE_RSLP 0x01 /* waiting for data (read) */ 105 #define OBOE_WSLP 0x02 /* waiting for data (write) */ 106 #define OBOE_CLOSING 0x04 /* waiting for output to drain */ 107 108 int sc_speeds; 109 int sc_flags; 110 int sc_speed; 111 int sc_ebofs; 112 113 struct oboe_dma *sc_dmas; 114 struct OboeTaskFile *sc_taskfile; /* The taskfile */ 115 u_char * sc_xmit_bufs[TX_SLOTS]; 116 u_char * sc_recv_bufs[RX_SLOTS]; 117 void * sc_xmit_stores[TX_SLOTS]; 118 void * sc_recv_stores[RX_SLOTS]; 119 int sc_txs; /* Current transmit slot number */ 120 int sc_rxs; /* Current receive slot number */ 121 int sc_saved; /* number of saved frames */ 122 int sc_lens[RX_SLOTS]; 123 124 int sc_txpending; 125 126 /* Statistics */ 127 int sc_txpackets; 128 int sc_rxpackets; 129 int sc_txerrors; 130 int sc_rxerrors; 131 }; 132 133 static int oboe_intr(void *handle); 134 static int oboe_reset(struct oboe_softc *); 135 136 struct oboe_dma { 137 bus_dmamap_t map; 138 caddr_t addr; 139 bus_dma_segment_t segs[1]; 140 int nsegs; 141 size_t size; 142 struct oboe_dma *next; 143 }; 144 145 #define DMAADDR(p) ((p)->map->dm_segs[0].ds_addr) 146 #define KERNADDR(p) ((void *)((p)->addr)) 147 148 static int oboe_alloc_taskfile(struct oboe_softc *); 149 static void oboe_init_taskfile(struct oboe_softc *); 150 static void oboe_startchip(struct oboe_softc *); 151 static void oboe_stopchip(struct oboe_softc *); 152 static void oboe_setbaud(struct oboe_softc *, int); 153 154 struct cfattach oboe_ca = { 155 sizeof(struct oboe_softc), oboe_match, oboe_attach, 156 oboe_detach, oboe_activate 157 }; 158 159 struct irframe_methods oboe_methods = { 160 oboe_open, oboe_close, oboe_read, oboe_write, oboe_poll, 161 oboe_set_params, oboe_get_speeds, oboe_get_turnarounds 162 }; 163 164 int 165 oboe_match(struct device *parent, struct cfdata *match, void *aux) 166 { 167 struct pci_attach_args *pa = aux; 168 169 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_TOSHIBA2 && 170 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_TOSHIBA2_OBOE) 171 return (1); 172 return 0; 173 } 174 175 void 176 oboe_attach(struct device *parent, struct device *self, void *aux) 177 { 178 struct oboe_softc *sc = (struct oboe_softc *)self; 179 struct pci_attach_args *pa = aux; 180 pci_intr_handle_t ih; 181 struct ir_attach_args ia; 182 const char *intrstring; 183 184 sc->sc_revision = PCI_REVISION(pa->pa_class); 185 printf(": Toshiba Fast Infrared Type O, revision %d\n", 186 sc->sc_revision); 187 188 /* Map I/O registers. */ 189 if (pci_mapreg_map(pa, IO_BAR, PCI_MAPREG_TYPE_IO, 0, 190 &sc->sc_iot, &sc->sc_ioh, NULL, NULL)) { 191 printf("%s: can't map I/O space\n", sc->sc_dev.dv_xname); 192 return; 193 } 194 195 sc->sc_dmatag = pa->pa_dmat; 196 197 ia.ia_type = IR_TYPE_IRFRAME; 198 ia.ia_methods = &oboe_methods; 199 ia.ia_handle = sc; 200 201 sc->sc_state = 0; 202 sc->sc_speed = IRDA_SPEED_9600; 203 204 /* Enable the device */ 205 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 206 pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | 207 PCI_COMMAND_MASTER_ENABLE); 208 209 /* Reset the device; bail out upon failure. */ 210 if (oboe_reset(sc) != 0) { 211 printf("%s: can't reset\n", sc->sc_dev.dv_xname); 212 return; 213 } 214 /* Map and establish the interrupt. */ 215 if (pci_intr_map(pa, &ih)) { 216 printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname); 217 return; 218 } 219 intrstring = pci_intr_string(pa->pa_pc, ih); 220 sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_IR, oboe_intr, sc); 221 if (sc->sc_ih == NULL) { 222 printf("%s: couldn't establish interrupt", 223 sc->sc_dev.dv_xname); 224 if (intrstring != NULL) 225 printf(" at %s", intrstring); 226 printf("\n"); 227 return; 228 } 229 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstring); 230 231 sc->sc_txs = 0; 232 sc->sc_rxs = 0; 233 234 sc->sc_speeds = 235 IRDA_SPEED_2400 | IRDA_SPEED_9600 | IRDA_SPEED_19200 | 236 IRDA_SPEED_38400 | IRDA_SPEED_57600 | IRDA_SPEED_115200 | 237 IRDA_SPEED_576000 | IRDA_SPEED_1152000 | IRDA_SPEED_4000000; 238 239 oboe_alloc_taskfile(sc); 240 241 sc->sc_child = config_found((void *)sc, &ia, ir_print); 242 } 243 244 int 245 oboe_activate(struct device *self, enum devact act) 246 { 247 struct oboe_softc *sc = (struct oboe_softc *)self; 248 int error; 249 250 DPRINTF(("%s: sc=%p\n", __FUNCTION__, sc)); 251 252 switch (act) { 253 case DVACT_ACTIVATE: 254 return (EOPNOTSUPP); 255 break; 256 257 case DVACT_DEACTIVATE: 258 if (sc->sc_child != NULL) 259 error = config_deactivate(sc->sc_child); 260 else 261 error = 0; 262 break; 263 } 264 return (error); 265 } 266 267 int 268 oboe_detach(struct device *self, int flags) 269 { 270 #if 0 271 struct oboe_softc *sc = (struct oboe_softc *)self; 272 #endif 273 /* XXX needs reference counting for proper detach. */ 274 DPRINTF(("%s: sc=%p\n", __FUNCTION__, sc)); 275 return (0); 276 } 277 278 int 279 oboe_open(void *h, int flag, int mode, struct proc *p) 280 { 281 struct oboe_softc *sc = h; 282 283 DPRINTF(("%s: sc=%p\n", __FUNCTION__, sc)); 284 285 sc->sc_state = 0; 286 sc->sc_saved = 0; 287 oboe_init_taskfile(sc); 288 oboe_startchip(sc); 289 290 return (0); 291 } 292 293 int 294 oboe_close(void *h, int flag, int mode, struct proc *p) 295 { 296 struct oboe_softc *sc = h; 297 int error = 0; 298 int s = splir(); 299 300 DPRINTF(("%s: sc=%p\n", __FUNCTION__, sc)); 301 /* Wait for output to drain */ 302 303 if (sc->sc_txpending > 0) { 304 sc->sc_state |= OBOE_CLOSING; 305 error = tsleep(&sc->sc_state, PZERO | PCATCH, "oboecl", hz/10); 306 } 307 splx(s); 308 309 oboe_stopchip(sc); 310 return (error); 311 } 312 313 int 314 oboe_read(void *h, struct uio *uio, int flag) 315 { 316 struct oboe_softc *sc = h; 317 int error = 0; 318 int s; 319 int slot; 320 321 DPRINTF(("%s: resid=%d, iovcnt=%d, offset=%ld\n", 322 __FUNCTION__, uio->uio_resid, uio->uio_iovcnt, 323 (long)uio->uio_offset)); 324 325 s = splir(); 326 while (sc->sc_saved == 0) { 327 if (flag & IO_NDELAY) { 328 splx(s); 329 return (EWOULDBLOCK); 330 } 331 sc->sc_state |= OBOE_RSLP; 332 DPRINTF(("oboe_read: sleep\n")); 333 error = tsleep(&sc->sc_rxs, PZERO | PCATCH, "oboerd", 0); 334 DPRINTF(("oboe_read: woke, error=%d\n", error)); 335 if (error) { 336 sc->sc_state &= ~OBOE_RSLP; 337 break; 338 } 339 } 340 341 /* Do just one frame transfer per read */ 342 343 if (!error) { 344 slot = (sc->sc_rxs - sc->sc_saved + RX_SLOTS) % RX_SLOTS; 345 if (uio->uio_resid < sc->sc_lens[slot]) { 346 DPRINTF(("oboe_read: uio buffer smaller than frame size (%d < %d)\n", uio->uio_resid, sc->sc_lens[slot])); 347 error = EINVAL; 348 } else { 349 DPRINTF(("oboe_read: moving %d bytes from %p\n", 350 sc->sc_lens[slot], 351 sc->sc_recv_stores[slot])); 352 error = uiomove(sc->sc_recv_stores[slot], 353 sc->sc_lens[slot], uio); 354 } 355 } 356 sc->sc_saved--; 357 splx(s); 358 359 return (error); 360 } 361 362 int 363 oboe_write(void *h, struct uio *uio, int flag) 364 { 365 struct oboe_softc *sc = h; 366 int error = 0; 367 int n; 368 int s = splir(); 369 370 DPRINTF(("%s: sc=%p\n", __FUNCTION__, sc)); 371 while (sc->sc_txpending == TX_SLOTS) { 372 if (flag & IO_NDELAY) { 373 splx(s); 374 return (EWOULDBLOCK); 375 } 376 sc->sc_state |= OBOE_WSLP; 377 DPRINTF(("oboe_write: sleep\n")); 378 error = tsleep(&sc->sc_txs, PZERO | PCATCH, "oboewr", 0); 379 DPRINTF(("oboe_write: woke up, error=%d\n", error)); 380 if (error) { 381 sc->sc_state &= ~OBOE_WSLP; 382 break; 383 } 384 } 385 if (error) 386 goto err; 387 if (sc->sc_taskfile->xmit[sc->sc_txs].control) { 388 DPRINTF(("oboe_write: slot overrun\n")); 389 } 390 391 n = irda_sir_frame(sc->sc_xmit_bufs[sc->sc_txs], TX_BUF_SZ, uio, 392 sc->sc_ebofs); 393 if (n < 0) { 394 error = -n; 395 goto err; 396 } 397 sc->sc_taskfile->xmit[sc->sc_txs].len = n; 398 399 OUTB(sc, 0, OBOE_RST); 400 OUTB(sc, 0x1e, OBOE_REG_11); 401 402 sc->sc_taskfile->xmit[sc->sc_txs].control = 0x84; 403 404 /* Need delay here??? */ 405 delay(1000); 406 407 sc->sc_txpending++; 408 OUTB(sc, 0x80, OBOE_RST); 409 OUTB(sc, 1, OBOE_REG_9); 410 sc->sc_txs++; 411 sc->sc_txs %= TX_SLOTS; 412 413 err: 414 splx(s); 415 return (error); 416 } 417 418 int 419 oboe_set_params(void *h, struct irda_params *p) 420 { 421 struct oboe_softc *sc = h; 422 int s = splir(); 423 424 if (p->speed > 0) { 425 oboe_setbaud(sc, p->speed); 426 } 427 sc->sc_ebofs = p->ebofs; 428 429 splx(s); 430 431 /* ignore ebofs and maxsize for now */ 432 return (0); 433 } 434 435 int 436 oboe_get_speeds(void *h, int *speeds) 437 { 438 struct oboe_softc *sc = h; 439 int s = splir(); 440 *speeds = sc->sc_speeds; 441 splx(s); 442 return (0); 443 } 444 445 int 446 oboe_get_turnarounds(void *h, int *turnarounds) 447 { 448 #if 0 449 struct oboe_softc *sc = h; 450 #endif 451 DPRINTF(("%s: sc=%p\n", __FUNCTION__, sc)); 452 *turnarounds = 0x01; /* 10ms */ 453 return (0); 454 } 455 456 int 457 oboe_poll(void *h, int events, struct proc *p) 458 { 459 struct oboe_softc *sc = h; 460 int revents = 0; 461 int s; 462 463 DPRINTF(("%s: sc=%p\n", __FUNCTION__, sc)); 464 465 s = splir(); 466 if (events & (POLLOUT | POLLWRNORM)) 467 revents |= events & (POLLOUT | POLLWRNORM); 468 if (events & (POLLIN | POLLRDNORM)) { 469 if (sc->sc_saved > 0) { 470 DPRINTF(("%s: have data\n", __FUNCTION__)); 471 revents |= events & (POLLIN | POLLRDNORM); 472 } else { 473 DPRINTF(("%s: recording select", __FUNCTION__)); 474 selrecord(p, &sc->sc_rsel); 475 } 476 } 477 splx(s); 478 479 return (revents); 480 } 481 482 483 static int 484 oboe_reset(struct oboe_softc *sc) 485 { 486 #if 0 487 OUTB(sc, 0x00, OBOE_RST); 488 OUTB(sc, 0x80, OBOE_RST); 489 #endif 490 return 0; 491 } 492 493 static int 494 oboe_intr(void *p) 495 { 496 struct oboe_softc *sc = p; 497 uint8_t irqstat = INB(sc, OBOE_ISR); 498 499 if (!(irqstat & 0xf8)) 500 return (0); /* Not for me? */ 501 502 DPRINTF(("oboe_intr stat=0x%x\n", irqstat)); 503 504 OUTB(sc, irqstat, OBOE_ISR); 505 506 if (irqstat & OBOE_ISR_RXDONE) { 507 while (sc->sc_taskfile->recv[sc->sc_rxs].control == 0) { 508 int len = sc->sc_taskfile->recv[sc->sc_rxs].len; 509 if (sc->sc_saved == RX_SLOTS) { 510 DPRINTF(("oboe_intr: all buffers filled\n")); 511 return 0; 512 } 513 514 if (len > 2) 515 len -= 2; /* JSP: skip check sum? */ 516 517 DPRINTF(("oboe_intr: moving %d bytes to %p\n", len, 518 sc->sc_recv_stores[sc->sc_rxs])); 519 bcopy(sc->sc_recv_bufs[sc->sc_rxs], 520 sc->sc_recv_stores[sc->sc_rxs], 521 len); 522 sc->sc_lens[sc->sc_rxs] = len; 523 sc->sc_saved++; 524 #if 0 525 (void)b_to_q(sc->sc_recv_bufs[sc->sc_rxs], 526 len, &sc->sc_q); 527 #endif 528 sc->sc_taskfile->recv[sc->sc_rxs].control = 0x83; 529 sc->sc_taskfile->recv[sc->sc_rxs].len = 0x0; 530 sc->sc_rxs = (sc->sc_rxs + 1) % RX_SLOTS; 531 DPRINTF(("oboe_intr new rxs=%d\n", sc->sc_rxs)); 532 } 533 DPRINTF(("oboe_intr no more frames available\n")); 534 if (sc->sc_state & OBOE_RSLP) { 535 DPRINTF(("oboe_intr changing state to ~OBOE_RSLP\n")); 536 sc->sc_state &= ~OBOE_RSLP; 537 DPRINTF(("oboe_intr: waking up reader\n")); 538 wakeup(&sc->sc_rxs); 539 } 540 selwakeup(&sc->sc_rsel); 541 DPRINTF(("oboe_intr returning\n")); 542 } 543 if (irqstat & OBOE_ISR_TXDONE) { 544 DPRINTF(("oboe_intr: write done\n")); 545 sc->sc_txpending--; 546 sc->sc_txpackets++; 547 548 if ((sc->sc_state & OBOE_CLOSING) && sc->sc_txpending == 0) { 549 wakeup(&sc->sc_state); 550 return 1; 551 } 552 553 if (sc->sc_state & OBOE_WSLP) { 554 DPRINTF(("oboe_intr changing state to ~OBOE_WSLP\n")); 555 sc->sc_state &= ~OBOE_WSLP; 556 DPRINTF(("oboe_intr: waking up writer\n")); 557 wakeup(&sc->sc_txs); 558 } 559 } 560 return (1); 561 } 562 563 /* XXX vtophys must go! */ 564 static void 565 oboe_init_taskfile(struct oboe_softc *sc) 566 { 567 int i; 568 int s = splir(); 569 570 for (i = 0; i < TX_SLOTS; ++i) { 571 sc->sc_taskfile->xmit[i].len = 0; 572 sc->sc_taskfile->xmit[i].control = 0x00; 573 sc->sc_taskfile->xmit[i].buffer = 574 vtophys((u_int)sc->sc_xmit_bufs[i]); /* u_int? */ 575 } 576 577 for (i = 0; i < RX_SLOTS; ++i) { 578 sc->sc_taskfile->recv[i].len = 0; 579 sc->sc_taskfile->recv[i].control = 0x83; 580 sc->sc_taskfile->recv[i].buffer = 581 vtophys((u_int)sc->sc_recv_bufs[i]); /* u_int? */ 582 } 583 584 sc->sc_txpending = 0; 585 586 splx(s); 587 } 588 589 static int 590 oboe_alloc_taskfile(struct oboe_softc *sc) 591 { 592 int i; 593 uint32_t addr = (uint32_t)malloc(OBOE_TASK_BUF_LEN, M_DEVBUF, M_WAITOK); 594 if (addr == NULL) { 595 goto bad; 596 } 597 addr &= ~(sizeof (struct OboeTaskFile) - 1); 598 addr += sizeof (struct OboeTaskFile); 599 sc->sc_taskfile = (struct OboeTaskFile *) addr; 600 601 for (i = 0; i < TX_SLOTS; ++i) { 602 sc->sc_xmit_bufs[i] = 603 malloc(TX_BUF_SZ, M_DEVBUF, M_WAITOK); 604 sc->sc_xmit_stores[i] = 605 malloc(TX_BUF_SZ, M_DEVBUF, M_WAITOK); 606 if (sc->sc_xmit_bufs[i] == NULL || 607 sc->sc_xmit_stores[i] == NULL) { 608 goto bad; 609 } 610 } 611 for (i = 0; i < RX_SLOTS; ++i) { 612 sc->sc_recv_bufs[i] = 613 malloc(RX_BUF_SZ, M_DEVBUF, M_WAITOK); 614 sc->sc_recv_stores[i] = 615 malloc(RX_BUF_SZ, M_DEVBUF, M_WAITOK); 616 if (sc->sc_recv_bufs[i] == NULL || 617 sc->sc_recv_stores[i] == NULL) { 618 goto bad; 619 } 620 } 621 622 return 0; 623 bad: 624 printf("oboe: malloc for buffers failed()\n"); 625 return 1; 626 } 627 628 static void 629 oboe_startchip (struct oboe_softc *sc) { 630 uint32_t physaddr; 631 632 OUTB(sc, 0, OBOE_LOCK); 633 OUTB(sc, 0, OBOE_RST); 634 OUTB(sc, OBOE_NTR_VAL, OBOE_NTR); 635 OUTB(sc, 0xf0, OBOE_REG_D); 636 OUTB(sc, 0xff, OBOE_ISR); 637 OUTB(sc, 0x0f, OBOE_REG_1A); 638 OUTB(sc, 0xff, OBOE_REG_1B); 639 640 physaddr = vtophys((u_int)sc->sc_taskfile); /* u_int? */ 641 642 OUTB(sc, (physaddr >> 0x0a) & 0xff, OBOE_TFP0); 643 OUTB(sc, (physaddr >> 0x12) & 0xff, OBOE_TFP1); 644 OUTB(sc, (physaddr >> 0x1a) & 0x3f, OBOE_TFP2); 645 646 OUTB(sc, 0x0e, OBOE_REG_11); 647 OUTB(sc, 0x80, OBOE_RST); 648 649 oboe_setbaud(sc, 9600); 650 651 sc->sc_rxs = INB(sc, OBOE_RCVT); 652 if (sc->sc_rxs < 0 || sc->sc_rxs >= RX_SLOTS) 653 sc->sc_rxs = 0; 654 sc->sc_txs = INB(sc, OBOE_XMTT) - OBOE_XMTT_OFFSET; 655 if (sc->sc_txs < 0 || sc->sc_txs >= TX_SLOTS) 656 sc->sc_txs = 0; 657 } 658 659 static void 660 oboe_stopchip (struct oboe_softc *sc) { 661 OUTB(sc, 0x0e, OBOE_REG_11); 662 OUTB(sc, 0x00, OBOE_RST); 663 OUTB(sc, 0x3f, OBOE_TFP2); /* Write the taskfile address */ 664 OUTB(sc, 0xff, OBOE_TFP1); 665 OUTB(sc, 0xff, OBOE_TFP0); 666 OUTB(sc, 0x0f, OBOE_REG_1B); 667 OUTB(sc, 0xff, OBOE_REG_1A); 668 OUTB(sc, 0x00, OBOE_ISR); /* FIXME: should i do this to disable ints? */ 669 OUTB(sc, 0x80, OBOE_RST); 670 OUTB(sc, 0x0e, OBOE_LOCK); 671 } 672 673 #define SPEEDCASE(speed, type, divisor) \ 674 case speed: \ 675 OUTB(sc, OBOE_PMDL_##type, OBOE_PMDL); \ 676 OUTB(sc, OBOE_SMDL_##type, OBOE_SMDL); \ 677 OUTB(sc, divisor, OBOE_UDIV); \ 678 break 679 680 static void 681 oboe_setbaud (struct oboe_softc *sc, int baud) { 682 int s; 683 684 DPRINTF(("oboe: setting baud to %d\n", baud)); 685 686 s = splir(); 687 688 switch (baud) { 689 SPEEDCASE( 2400, SIR, 0xbf); 690 SPEEDCASE( 9600, SIR, 0x2f); 691 SPEEDCASE( 19200, SIR, 0x17); 692 SPEEDCASE( 38400, SIR, 0x0b); 693 SPEEDCASE( 57600, SIR, 0x07); 694 SPEEDCASE( 115200, SIR, 0x03); 695 SPEEDCASE(1152000, MIR, 0x01); 696 SPEEDCASE(4000000, FIR, 0x00); 697 default: 698 printf("oboe: cannot set speed to %d\n", baud); 699 return; 700 } 701 702 splx(s); 703 704 OUTB(sc, 0x00, OBOE_RST); 705 OUTB(sc, 0x80, OBOE_RST); 706 OUTB(sc, 0x01, OBOE_REG_9); 707 708 sc->sc_speed = baud; 709 } 710
Indexes created Tue Sep 30 20:09:53 GMT 2025