oboe.c revision 1.5
1/* $NetBSD: oboe.c,v 1.5 2001/12/11 21:34:06 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 68int oboe_match(struct device *parent, struct cfdata *match, void *aux); 69void oboe_attach(struct device *parent, struct device *self, void *aux); 70int oboe_activate(struct device *self, enum devact act); 71int oboe_detach(struct device *self, int flags); 72 73int oboe_open(void *h, int flag, int mode, struct proc *p); 74int oboe_close(void *h, int flag, int mode, struct proc *p); 75int oboe_read(void *h, struct uio *uio, int flag); 76int oboe_write(void *h, struct uio *uio, int flag); 77int oboe_set_params(void *h, struct irda_params *params); 78int oboe_get_speeds(void *h, int *speeds); 79int oboe_get_turnarounds(void *h, int *times); 80int oboe_poll(void *h, int events, struct proc *p); 81 82#ifdef OBOE_DEBUG 83#define DPRINTF(x) if (oboedebug) printf x 84int oboedebug = 1; 85#else 86#define DPRINTF(x) 87#endif 88 89struct oboe_dma; 90 91struct 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 133static int oboe_intr(void *handle); 134static int oboe_reset(struct oboe_softc *); 135 136struct 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 148static int oboe_alloc_taskfile(struct oboe_softc *); 149static void oboe_init_taskfile(struct oboe_softc *); 150static void oboe_startchip(struct oboe_softc *); 151static void oboe_stopchip(struct oboe_softc *); 152static int oboe_setbaud(struct oboe_softc *, int); 153 154struct cfattach oboe_ca = { 155 sizeof(struct oboe_softc), oboe_match, oboe_attach, 156 oboe_detach, oboe_activate 157}; 158 159struct 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 164int 165oboe_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 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_TOSHIBA2_DONAUOBOE)) 172 return (1); 173 return 0; 174} 175 176void 177oboe_attach(struct device *parent, struct device *self, void *aux) 178{ 179 struct oboe_softc *sc = (struct oboe_softc *)self; 180 struct pci_attach_args *pa = aux; 181 pci_intr_handle_t ih; 182 struct ir_attach_args ia; 183 const char *intrstring; 184 185 sc->sc_revision = PCI_REVISION(pa->pa_class); 186 printf(": Toshiba Fast Infrared Type O, revision %d\n", 187 sc->sc_revision); 188 189 /* Map I/O registers. */ 190 if (pci_mapreg_map(pa, IO_BAR, PCI_MAPREG_TYPE_IO, 0, 191 &sc->sc_iot, &sc->sc_ioh, NULL, NULL)) { 192 printf("%s: can't map I/O space\n", sc->sc_dev.dv_xname); 193 return; 194 } 195 196 sc->sc_dmatag = pa->pa_dmat; 197 198 ia.ia_type = IR_TYPE_IRFRAME; 199 ia.ia_methods = &oboe_methods; 200 ia.ia_handle = sc; 201 202 sc->sc_state = 0; 203 sc->sc_speed = IRDA_SPEED_9600; 204 205 /* Enable the device */ 206 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 207 pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | 208 PCI_COMMAND_MASTER_ENABLE); 209 210 /* Reset the device; bail out upon failure. */ 211 if (oboe_reset(sc) != 0) { 212 printf("%s: can't reset\n", sc->sc_dev.dv_xname); 213 return; 214 } 215 /* Map and establish the interrupt. */ 216 if (pci_intr_map(pa, &ih)) { 217 printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname); 218 return; 219 } 220 intrstring = pci_intr_string(pa->pa_pc, ih); 221 sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_IR, oboe_intr, sc); 222 if (sc->sc_ih == NULL) { 223 printf("%s: couldn't establish interrupt", 224 sc->sc_dev.dv_xname); 225 if (intrstring != NULL) 226 printf(" at %s", intrstring); 227 printf("\n"); 228 return; 229 } 230 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstring); 231 232 sc->sc_txs = 0; 233 sc->sc_rxs = 0; 234 235 sc->sc_speeds = 236 IRDA_SPEED_2400 | IRDA_SPEED_9600 | IRDA_SPEED_19200 | 237 IRDA_SPEED_38400 | IRDA_SPEED_57600 | IRDA_SPEED_115200 | 238 IRDA_SPEED_576000 | IRDA_SPEED_1152000 | IRDA_SPEED_4000000; 239 240 oboe_alloc_taskfile(sc); 241 242 sc->sc_child = config_found((void *)sc, &ia, ir_print); 243} 244 245int 246oboe_activate(struct device *self, enum devact act) 247{ 248 struct oboe_softc *sc = (struct oboe_softc *)self; 249 int error; 250 251 DPRINTF(("%s: sc=%p\n", __FUNCTION__, sc)); 252 253 switch (act) { 254 case DVACT_ACTIVATE: 255 return (EOPNOTSUPP); 256 break; 257 258 case DVACT_DEACTIVATE: 259 if (sc->sc_child != NULL) 260 error = config_deactivate(sc->sc_child); 261 else 262 error = 0; 263 break; 264 } 265 return (error); 266} 267 268int 269oboe_detach(struct device *self, int flags) 270{ 271#if 0 272 struct oboe_softc *sc = (struct oboe_softc *)self; 273#endif 274 /* XXX needs reference counting for proper detach. */ 275 DPRINTF(("%s: sc=%p\n", __FUNCTION__, sc)); 276 return (0); 277} 278 279int 280oboe_open(void *h, int flag, int mode, struct proc *p) 281{ 282 struct oboe_softc *sc = h; 283 284 DPRINTF(("%s: sc=%p\n", __FUNCTION__, sc)); 285 286 sc->sc_state = 0; 287 sc->sc_saved = 0; 288 oboe_init_taskfile(sc); 289 oboe_startchip(sc); 290 291 return (0); 292} 293 294int 295oboe_close(void *h, int flag, int mode, struct proc *p) 296{ 297 struct oboe_softc *sc = h; 298 int error = 0; 299 int s = splir(); 300 301 DPRINTF(("%s: sc=%p\n", __FUNCTION__, sc)); 302 /* Wait for output to drain */ 303 304 if (sc->sc_txpending > 0) { 305 sc->sc_state |= OBOE_CLOSING; 306 error = tsleep(&sc->sc_state, PZERO | PCATCH, "oboecl", hz/10); 307 } 308 splx(s); 309 310 oboe_stopchip(sc); 311 return (error); 312} 313 314int 315oboe_read(void *h, struct uio *uio, int flag) 316{ 317 struct oboe_softc *sc = h; 318 int error = 0; 319 int s; 320 int slot; 321 322 DPRINTF(("%s: resid=%d, iovcnt=%d, offset=%ld\n", 323 __FUNCTION__, uio->uio_resid, uio->uio_iovcnt, 324 (long)uio->uio_offset)); 325 326 s = splir(); 327 while (sc->sc_saved == 0) { 328 if (flag & IO_NDELAY) { 329 splx(s); 330 return (EWOULDBLOCK); 331 } 332 sc->sc_state |= OBOE_RSLP; 333 DPRINTF(("oboe_read: sleep\n")); 334 error = tsleep(&sc->sc_rxs, PZERO | PCATCH, "oboerd", 0); 335 DPRINTF(("oboe_read: woke, error=%d\n", error)); 336 if (error) { 337 sc->sc_state &= ~OBOE_RSLP; 338 break; 339 } 340 } 341 342 /* Do just one frame transfer per read */ 343 344 if (!error) { 345 slot = (sc->sc_rxs - sc->sc_saved + RX_SLOTS) % RX_SLOTS; 346 if (uio->uio_resid < sc->sc_lens[slot]) { 347 DPRINTF(("oboe_read: uio buffer smaller than frame size" 348 "(%d < %d)\n", uio->uio_resid, sc->sc_lens[slot])); 349 error = EINVAL; 350 } else { 351 DPRINTF(("oboe_read: moving %d bytes from %p\n", 352 sc->sc_lens[slot], 353 sc->sc_recv_stores[slot])); 354 error = uiomove(sc->sc_recv_stores[slot], 355 sc->sc_lens[slot], uio); 356 } 357 } 358 sc->sc_saved--; 359 splx(s); 360 361 return (error); 362} 363 364int 365oboe_write(void *h, struct uio *uio, int flag) 366{ 367 struct oboe_softc *sc = h; 368 int error = 0; 369 int n; 370 int s = splir(); 371 372 DPRINTF(("%s: sc=%p\n", __FUNCTION__, sc)); 373 while (sc->sc_txpending == TX_SLOTS) { 374 if (flag & IO_NDELAY) { 375 splx(s); 376 return (EWOULDBLOCK); 377 } 378 sc->sc_state |= OBOE_WSLP; 379 DPRINTF(("oboe_write: sleep\n")); 380 error = tsleep(&sc->sc_txs, PZERO | PCATCH, "oboewr", 0); 381 DPRINTF(("oboe_write: woke up, error=%d\n", error)); 382 if (error) { 383 sc->sc_state &= ~OBOE_WSLP; 384 break; 385 } 386 } 387 if (error) 388 goto err; 389 if (sc->sc_taskfile->xmit[sc->sc_txs].control) { 390 DPRINTF(("oboe_write: slot overrun\n")); 391 } 392 393 n = irda_sir_frame(sc->sc_xmit_bufs[sc->sc_txs], TX_BUF_SZ, uio, 394 sc->sc_ebofs); 395 if (n < 0) { 396 error = -n; 397 goto err; 398 } 399 sc->sc_taskfile->xmit[sc->sc_txs].len = n; 400 401 OUTB(sc, 0, OBOE_RST); 402 OUTB(sc, 0x1e, OBOE_REG_11); 403 404 sc->sc_taskfile->xmit[sc->sc_txs].control = 0x84; 405 406 /* XXX Need delay here??? */ 407 delay(1000); 408 409 sc->sc_txpending++; 410 OUTB(sc, 0x80, OBOE_RST); 411 OUTB(sc, 1, OBOE_REG_9); 412 sc->sc_txs++; 413 sc->sc_txs %= TX_SLOTS; 414 415 err: 416 splx(s); 417 return (error); 418} 419 420int 421oboe_set_params(void *h, struct irda_params *p) 422{ 423 struct oboe_softc *sc = h; 424 int error; 425 426 if (p->speed > 0) { 427 error = oboe_setbaud(sc, p->speed); 428 if (error) 429 return (error); 430 } 431 sc->sc_ebofs = p->ebofs; 432 433 /* XXX ignore ebofs and maxsize for now */ 434 return (0); 435} 436 437int 438oboe_get_speeds(void *h, int *speeds) 439{ 440 struct oboe_softc *sc = h; 441 *speeds = sc->sc_speeds; 442 return (0); 443} 444 445int 446oboe_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 /* XXX Linux driver sets all bits */ 453 *turnarounds = IRDA_TURNT_10000; /* 10ms */ 454 return (0); 455} 456 457int 458oboe_poll(void *h, int events, struct proc *p) 459{ 460 struct oboe_softc *sc = h; 461 int revents = 0; 462 int s; 463 464 DPRINTF(("%s: sc=%p\n", __FUNCTION__, sc)); 465 466 s = splir(); 467 if (events & (POLLOUT | POLLWRNORM)) 468 revents |= events & (POLLOUT | POLLWRNORM); 469 if (events & (POLLIN | POLLRDNORM)) { 470 if (sc->sc_saved > 0) { 471 DPRINTF(("%s: have data\n", __FUNCTION__)); 472 revents |= events & (POLLIN | POLLRDNORM); 473 } else { 474 DPRINTF(("%s: recording select\n", __FUNCTION__)); 475 selrecord(p, &sc->sc_rsel); 476 } 477 } 478 splx(s); 479 480 return (revents); 481} 482 483 484static int 485oboe_reset(struct oboe_softc *sc) 486{ 487#if 0 488 OUTB(sc, 0x00, OBOE_RST); 489 OUTB(sc, 0x80, OBOE_RST); 490#endif 491 return 0; 492} 493 494static int 495oboe_intr(void *p) 496{ 497 struct oboe_softc *sc = p; 498 uint8_t irqstat = INB(sc, OBOE_ISR); 499 500 if (!(irqstat & 0xf8)) 501 return (0); /* Not for me? */ 502 503 DPRINTF(("oboe_intr stat=0x%x\n", irqstat)); 504 505 OUTB(sc, irqstat, OBOE_ISR); 506 507 if (irqstat & OBOE_ISR_RXDONE) { 508 while (sc->sc_taskfile->recv[sc->sc_rxs].control == 0) { 509 int len = sc->sc_taskfile->recv[sc->sc_rxs].len; 510 if (sc->sc_saved == RX_SLOTS) { 511 DPRINTF(("oboe_intr: all buffers filled\n")); 512 return 0; 513 } 514 515 if (len > 2) 516 len -= 2; /* JSP: skip check sum? */ 517 518 DPRINTF(("oboe_intr: moving %d bytes to %p\n", len, 519 sc->sc_recv_stores[sc->sc_rxs])); 520 memcpy(sc->sc_recv_stores[sc->sc_rxs], 521 sc->sc_recv_bufs[sc->sc_rxs], 522 len); 523 sc->sc_lens[sc->sc_rxs] = len; 524 sc->sc_saved++; 525#if 0 526 (void)b_to_q(sc->sc_recv_bufs[sc->sc_rxs], 527 len, &sc->sc_q); 528#endif 529 sc->sc_taskfile->recv[sc->sc_rxs].control = 0x83; 530 sc->sc_taskfile->recv[sc->sc_rxs].len = 0x0; 531 sc->sc_rxs = (sc->sc_rxs + 1) % RX_SLOTS; 532 DPRINTF(("oboe_intr new rxs=%d\n", sc->sc_rxs)); 533 } 534 DPRINTF(("oboe_intr no more frames available\n")); 535 if (sc->sc_state & OBOE_RSLP) { 536 DPRINTF(("oboe_intr changing state to ~OBOE_RSLP\n")); 537 sc->sc_state &= ~OBOE_RSLP; 538 DPRINTF(("oboe_intr: waking up reader\n")); 539 wakeup(&sc->sc_rxs); 540 } 541 selwakeup(&sc->sc_rsel); 542 DPRINTF(("oboe_intr returning\n")); 543 } 544 if (irqstat & OBOE_ISR_TXDONE) { 545 DPRINTF(("oboe_intr: write done\n")); 546 sc->sc_txpending--; 547 sc->sc_txpackets++; 548 549 if ((sc->sc_state & OBOE_CLOSING) && sc->sc_txpending == 0) { 550 wakeup(&sc->sc_state); 551 return 1; 552 } 553 554 if (sc->sc_state & OBOE_WSLP) { 555 DPRINTF(("oboe_intr changing state to ~OBOE_WSLP\n")); 556 sc->sc_state &= ~OBOE_WSLP; 557 DPRINTF(("oboe_intr: waking up writer\n")); 558 wakeup(&sc->sc_txs); 559 } 560 } 561 return (1); 562} 563 564/* XXX vtophys must go! */ 565static void 566oboe_init_taskfile(struct oboe_softc *sc) 567{ 568 int i; 569 int s = splir(); 570 571 for (i = 0; i < TX_SLOTS; ++i) { 572 sc->sc_taskfile->xmit[i].len = 0; 573 sc->sc_taskfile->xmit[i].control = 0x00; 574 sc->sc_taskfile->xmit[i].buffer = 575 vtophys((u_int)sc->sc_xmit_bufs[i]); /* u_int? */ 576 } 577 578 for (i = 0; i < RX_SLOTS; ++i) { 579 sc->sc_taskfile->recv[i].len = 0; 580 sc->sc_taskfile->recv[i].control = 0x83; 581 sc->sc_taskfile->recv[i].buffer = 582 vtophys((u_int)sc->sc_recv_bufs[i]); /* u_int? */ 583 } 584 585 sc->sc_txpending = 0; 586 587 splx(s); 588} 589 590static int 591oboe_alloc_taskfile(struct oboe_softc *sc) 592{ 593 int i; 594 /* XXX */ 595 uint32_t addr = (uint32_t)malloc(OBOE_TASK_BUF_LEN, M_DEVBUF, M_WAITOK); 596 if (addr == NULL) { 597 goto bad; 598 } 599 addr &= ~(sizeof (struct OboeTaskFile) - 1); 600 addr += sizeof (struct OboeTaskFile); 601 sc->sc_taskfile = (struct OboeTaskFile *) addr; 602 603 for (i = 0; i < TX_SLOTS; ++i) { 604 sc->sc_xmit_bufs[i] = 605 malloc(TX_BUF_SZ, M_DEVBUF, M_WAITOK); 606 sc->sc_xmit_stores[i] = 607 malloc(TX_BUF_SZ, M_DEVBUF, M_WAITOK); 608 if (sc->sc_xmit_bufs[i] == NULL || 609 sc->sc_xmit_stores[i] == NULL) { 610 goto bad; 611 } 612 } 613 for (i = 0; i < RX_SLOTS; ++i) { 614 sc->sc_recv_bufs[i] = 615 malloc(RX_BUF_SZ, M_DEVBUF, M_WAITOK); 616 sc->sc_recv_stores[i] = 617 malloc(RX_BUF_SZ, M_DEVBUF, M_WAITOK); 618 if (sc->sc_recv_bufs[i] == NULL || 619 sc->sc_recv_stores[i] == NULL) { 620 goto bad; 621 } 622 } 623 624 return 0; 625bad: 626 printf("oboe: malloc for buffers failed()\n"); 627 return 1; 628} 629 630static void 631oboe_startchip (struct oboe_softc *sc) 632{ 633 uint32_t physaddr; 634 635 OUTB(sc, 0, OBOE_LOCK); 636 OUTB(sc, 0, OBOE_RST); 637 OUTB(sc, OBOE_NTR_VAL, OBOE_NTR); 638 OUTB(sc, 0xf0, OBOE_REG_D); 639 OUTB(sc, 0xff, OBOE_ISR); 640 OUTB(sc, 0x0f, OBOE_REG_1A); 641 OUTB(sc, 0xff, OBOE_REG_1B); 642 643 physaddr = vtophys((u_int)sc->sc_taskfile); /* u_int? */ 644 645 OUTB(sc, (physaddr >> 0x0a) & 0xff, OBOE_TFP0); 646 OUTB(sc, (physaddr >> 0x12) & 0xff, OBOE_TFP1); 647 OUTB(sc, (physaddr >> 0x1a) & 0x3f, OBOE_TFP2); 648 649 OUTB(sc, 0x0e, OBOE_REG_11); 650 OUTB(sc, 0x80, OBOE_RST); 651 652 (void)oboe_setbaud(sc, 9600); 653 654 sc->sc_rxs = INB(sc, OBOE_RCVT); 655 if (sc->sc_rxs < 0 || sc->sc_rxs >= RX_SLOTS) 656 sc->sc_rxs = 0; 657 sc->sc_txs = INB(sc, OBOE_XMTT) - OBOE_XMTT_OFFSET; 658 if (sc->sc_txs < 0 || sc->sc_txs >= TX_SLOTS) 659 sc->sc_txs = 0; 660} 661 662static void 663oboe_stopchip (struct oboe_softc *sc) 664{ 665 OUTB(sc, 0x0e, OBOE_REG_11); 666 OUTB(sc, 0x00, OBOE_RST); 667 OUTB(sc, 0x3f, OBOE_TFP2); /* Write the taskfile address */ 668 OUTB(sc, 0xff, OBOE_TFP1); 669 OUTB(sc, 0xff, OBOE_TFP0); 670 OUTB(sc, 0x0f, OBOE_REG_1B); 671 OUTB(sc, 0xff, OBOE_REG_1A); 672 OUTB(sc, 0x00, OBOE_ISR); /* XXX: should i do this to disable ints? */ 673 OUTB(sc, 0x80, OBOE_RST); 674 OUTB(sc, 0x0e, OBOE_LOCK); 675} 676 677#define SPEEDCASE(speed, type, divisor) \ 678case speed: \ 679OUTB(sc, OBOE_PMDL_##type, OBOE_PMDL); \ 680OUTB(sc, OBOE_SMDL_##type, OBOE_SMDL); \ 681OUTB(sc, divisor, OBOE_UDIV); \ 682break 683 684static int 685oboe_setbaud(struct oboe_softc *sc, int baud) 686{ 687 int s; 688 689 DPRINTF(("oboe: setting baud to %d\n", baud)); 690 691 s = splir(); 692 693 switch (baud) { 694 SPEEDCASE( 2400, SIR, 0xbf); 695 SPEEDCASE( 9600, SIR, 0x2f); 696 SPEEDCASE( 19200, SIR, 0x17); 697 SPEEDCASE( 38400, SIR, 0x0b); 698 SPEEDCASE( 57600, SIR, 0x07); 699 SPEEDCASE( 115200, SIR, 0x03); 700 SPEEDCASE(1152000, MIR, 0x01); 701 SPEEDCASE(4000000, FIR, 0x00); 702 default: 703 DPRINTF(("oboe: cannot set speed to %d\n", baud)); 704 splx(s); 705 return (EINVAL); 706 } 707 708 OUTB(sc, 0x00, OBOE_RST); 709 OUTB(sc, 0x80, OBOE_RST); 710 OUTB(sc, 0x01, OBOE_REG_9); 711 712 sc->sc_speed = baud; 713 714 splx(s); 715 716 return (0); 717} 718