ustir.c revision 1.32
1 /* $NetBSD: ustir.c,v 1.32 2012/03/06 03:35:30 mrg 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 David Sainty <David.Sainty (at) dtsp.co.nz> 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: ustir.c,v 1.32 2012/03/06 03:35:30 mrg Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/device.h> 39 #include <sys/malloc.h> 40 #include <sys/conf.h> 41 #include <sys/file.h> 42 #include <sys/poll.h> 43 #include <sys/select.h> 44 #include <sys/proc.h> 45 #include <sys/kthread.h> 46 47 #ifdef USTIR_DEBUG_IOCTLS 48 #include <sys/ioctl.h> 49 #include <dev/usb/ustir.h> 50 #endif 51 52 #include <dev/usb/usb.h> 53 #include <dev/usb/usbdevs.h> 54 #include <dev/usb/usbdi.h> 55 #include <dev/usb/usbdi_util.h> 56 #include <dev/usb/ustirreg.h> 57 58 #include <dev/ir/ir.h> 59 #include <dev/ir/irdaio.h> 60 #include <dev/ir/irframevar.h> 61 #include <dev/ir/sir.h> 62 63 #ifdef USTIR_DEBUG 64 #define DPRINTFN(n,x) if (ustirdebug>(n)) printf x 65 int ustirdebug = 0; 66 #else 67 #define DPRINTFN(n,x) 68 #endif 69 70 /* Max size with framing. */ 71 #define MAX_USTIR_OUTPUT_FRAME (2*IRDA_MAX_FRAME_SIZE + IRDA_MAX_EBOFS + STIR_OUTPUT_HEADER_SIZE + 4) 72 73 #define USTIR_NSPEEDS 9 74 struct ustir_speedrec { 75 unsigned int speed; 76 unsigned int config; 77 }; 78 79 Static struct ustir_speedrec const ustir_speeds[USTIR_NSPEEDS] = { 80 { 4000000, STIR_BRMODE_4000000 }, 81 { 1152000, STIR_BRMODE_1152000 }, 82 { 576000, STIR_BRMODE_576000 }, 83 { 115200, STIR_BRMODE_115200 }, 84 { 57600, STIR_BRMODE_57600 }, 85 { 38400, STIR_BRMODE_38400 }, 86 { 19200, STIR_BRMODE_19200 }, 87 { 9600, STIR_BRMODE_9600 }, 88 { 2400, STIR_BRMODE_2400 } 89 }; 90 91 struct framedefn { 92 unsigned int bof_count; 93 u_int8_t bof_byte; 94 95 u_int8_t esc_byte; 96 u_int8_t esc_xor; 97 98 unsigned int eof_count; 99 u_int8_t eof_byte; 100 101 unsigned int fcs_count; 102 u_int32_t fcs_init; 103 u_int32_t fcs_correct; 104 105 u_int32_t (*fcs_calc)(u_int32_t, u_int8_t const*, size_t); 106 }; 107 108 Static u_int32_t crc_ccitt_16(u_int32_t, u_int8_t const*, size_t); 109 110 struct framedefn const framedef_sir = { 111 1, 0xc0, 112 0x7d, 0x20, 113 1, 0xc1, 114 2, INITFCS, GOODFCS, 115 crc_ccitt_16 116 }; 117 118 enum framefsmstate { 119 FSTATE_END_OF_FRAME, 120 FSTATE_START_OF_FRAME, 121 FSTATE_IN_DATA, 122 FSTATE_IN_END 123 }; 124 125 enum frameresult { 126 FR_IDLE, 127 FR_INPROGRESS, 128 FR_FRAMEOK, 129 FR_FRAMEBADFCS, 130 FR_FRAMEMALFORMED, 131 FR_BUFFEROVERRUN 132 }; 133 134 struct framestate { 135 struct framedefn const *definition; 136 137 u_int8_t *buffer; 138 size_t buflen; 139 size_t bufindex; 140 141 enum framefsmstate fsmstate; 142 u_int escaped; 143 u_int state_index; 144 }; 145 146 #define deframe_isclear(fs) ((fs)->fsmstate == FSTATE_END_OF_FRAME) 147 148 Static void deframe_clear(struct framestate *); 149 Static void deframe_init(struct framestate *, struct framedefn const *, 150 u_int8_t *, size_t); 151 Static enum frameresult deframe_process(struct framestate *, u_int8_t const **, 152 size_t *); 153 154 struct ustir_softc { 155 device_t sc_dev; 156 usbd_device_handle sc_udev; 157 usbd_interface_handle sc_iface; 158 159 u_int8_t *sc_ur_buf; /* Unencapsulated frame */ 160 u_int sc_ur_framelen; 161 162 u_int8_t *sc_rd_buf; /* Raw incoming data stream */ 163 size_t sc_rd_index; 164 int sc_rd_addr; 165 usbd_pipe_handle sc_rd_pipe; 166 usbd_xfer_handle sc_rd_xfer; 167 u_int sc_rd_count; 168 int sc_rd_readinprogress; 169 u_int sc_rd_expectdataticks; 170 u_char sc_rd_err; 171 struct framestate sc_framestate; 172 struct lwp *sc_thread; 173 struct selinfo sc_rd_sel; 174 175 u_int8_t *sc_wr_buf; 176 int sc_wr_addr; 177 int sc_wr_stalewrite; 178 usbd_xfer_handle sc_wr_xfer; 179 usbd_pipe_handle sc_wr_pipe; 180 struct selinfo sc_wr_sel; 181 182 enum { 183 udir_input, /* Receiving data */ 184 udir_output, /* Transmitting data */ 185 udir_stalled, /* Error preventing data flow */ 186 udir_idle /* Neither receiving nor transmitting */ 187 } sc_direction; 188 189 struct ustir_speedrec const *sc_speedrec; 190 191 device_t sc_child; 192 struct irda_params sc_params; 193 194 int sc_refcnt; 195 char sc_closing; 196 char sc_dying; 197 }; 198 199 /* True if we cannot safely read data from the device */ 200 #define USTIR_BLOCK_RX_DATA(sc) ((sc)->sc_ur_framelen != 0) 201 202 #define USTIR_WR_TIMEOUT 200 203 204 Static int ustir_activate(device_t self, enum devact act); 205 Static int ustir_open(void *h, int flag, int mode, struct lwp *l); 206 Static int ustir_close(void *h, int flag, int mode, struct lwp *l); 207 Static int ustir_read(void *h, struct uio *uio, int flag); 208 Static int ustir_write(void *h, struct uio *uio, int flag); 209 Static int ustir_set_params(void *h, struct irda_params *params); 210 Static int ustir_get_speeds(void *h, int *speeds); 211 Static int ustir_get_turnarounds(void *h, int *times); 212 Static int ustir_poll(void *h, int events, struct lwp *l); 213 Static int ustir_kqfilter(void *h, struct knote *kn); 214 215 #ifdef USTIR_DEBUG_IOCTLS 216 Static int ustir_ioctl(void *h, u_long cmd, void *addr, int flag, struct lwp *l); 217 #endif 218 219 Static struct irframe_methods const ustir_methods = { 220 ustir_open, ustir_close, ustir_read, ustir_write, ustir_poll, 221 ustir_kqfilter, ustir_set_params, ustir_get_speeds, 222 ustir_get_turnarounds, 223 #ifdef USTIR_DEBUG_IOCTLS 224 ustir_ioctl 225 #endif 226 }; 227 228 Static void ustir_rd_cb(usbd_xfer_handle, usbd_private_handle, usbd_status); 229 Static usbd_status ustir_start_read(struct ustir_softc *); 230 Static void ustir_periodic(struct ustir_softc *); 231 Static void ustir_thread(void *); 232 233 Static u_int32_t 234 crc_ccitt_16(u_int32_t crcinit, u_int8_t const *buf, size_t blen) 235 { 236 while (blen-- > 0) { 237 u_int8_t chr; 238 chr = *buf++; 239 crcinit = updateFCS(crcinit, chr); 240 } 241 return crcinit; 242 } 243 244 static usbd_status 245 ustir_read_reg(struct ustir_softc *sc, unsigned int reg, u_int8_t *data) 246 { 247 usb_device_request_t req; 248 249 req.bmRequestType = UT_READ_VENDOR_DEVICE; 250 req.bRequest = STIR_CMD_READMULTIREG; 251 USETW(req.wValue, 0); 252 USETW(req.wIndex, reg); 253 USETW(req.wLength, 1); 254 255 return usbd_do_request(sc->sc_udev, &req, data); 256 } 257 258 static usbd_status 259 ustir_write_reg(struct ustir_softc *sc, unsigned int reg, u_int8_t data) 260 { 261 usb_device_request_t req; 262 263 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 264 req.bRequest = STIR_CMD_WRITESINGLEREG; 265 USETW(req.wValue, data); 266 USETW(req.wIndex, reg); 267 USETW(req.wLength, 0); 268 269 return usbd_do_request(sc->sc_udev, &req, NULL); 270 } 271 272 #ifdef USTIR_DEBUG 273 static void 274 ustir_dumpdata(u_int8_t const *data, size_t dlen, char const *desc) 275 { 276 size_t bdindex; 277 printf("%s: (%lx)", desc, (unsigned long)dlen); 278 for (bdindex = 0; bdindex < dlen; bdindex++) 279 printf(" %02x", (unsigned int)data[bdindex]); 280 printf("\n"); 281 } 282 #endif 283 284 int ustir_match(device_t, cfdata_t, void *); 285 void ustir_attach(device_t, device_t, void *); 286 void ustir_childdet(device_t, device_t); 287 int ustir_detach(device_t, int); 288 int ustir_activate(device_t, enum devact); 289 extern struct cfdriver ustir_cd; 290 CFATTACH_DECL2_NEW(ustir, sizeof(struct ustir_softc), ustir_match, 291 ustir_attach, ustir_detach, ustir_activate, NULL, ustir_childdet); 292 293 int 294 ustir_match(device_t parent, cfdata_t match, void *aux) 295 { 296 struct usb_attach_arg *uaa = aux; 297 298 DPRINTFN(50,("ustir_match\n")); 299 300 if (uaa->vendor == USB_VENDOR_SIGMATEL && 301 uaa->product == USB_PRODUCT_SIGMATEL_IRDA) 302 return UMATCH_VENDOR_PRODUCT; 303 304 return UMATCH_NONE; 305 } 306 307 void 308 ustir_attach(device_t parent, device_t self, void *aux) 309 { 310 struct ustir_softc *sc = device_private(self); 311 struct usb_attach_arg *uaa = aux; 312 usbd_device_handle dev = uaa->device; 313 usbd_interface_handle iface; 314 char *devinfop; 315 usb_endpoint_descriptor_t *ed; 316 u_int8_t epcount; 317 int i; 318 struct ir_attach_args ia; 319 320 DPRINTFN(10,("ustir_attach: sc=%p\n", sc)); 321 322 sc->sc_dev = self; 323 324 aprint_naive("\n"); 325 aprint_normal("\n"); 326 327 devinfop = usbd_devinfo_alloc(dev, 0); 328 aprint_normal_dev(self, "%s\n", devinfop); 329 usbd_devinfo_free(devinfop); 330 331 if (usbd_set_config_index(dev, 0, 1) 332 || usbd_device2interface_handle(dev, 0, &iface)) { 333 aprint_error_dev(self, "Configuration failed\n"); 334 return; 335 } 336 337 sc->sc_udev = dev; 338 sc->sc_iface = iface; 339 340 epcount = 0; 341 (void)usbd_endpoint_count(iface, &epcount); 342 343 sc->sc_rd_addr = -1; 344 sc->sc_wr_addr = -1; 345 for (i = 0; i < epcount; i++) { 346 ed = usbd_interface2endpoint_descriptor(iface, i); 347 if (ed == NULL) { 348 aprint_error_dev(self, "couldn't get ep %d\n", i); 349 return; 350 } 351 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 352 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 353 sc->sc_rd_addr = ed->bEndpointAddress; 354 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 355 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 356 sc->sc_wr_addr = ed->bEndpointAddress; 357 } 358 } 359 if (sc->sc_rd_addr == -1 || sc->sc_wr_addr == -1) { 360 aprint_error_dev(self, "missing endpoint\n"); 361 return; 362 } 363 364 DPRINTFN(10, ("ustir_attach: %p\n", sc->sc_udev)); 365 366 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 367 sc->sc_dev); 368 369 ia.ia_type = IR_TYPE_IRFRAME; 370 ia.ia_methods = &ustir_methods; 371 ia.ia_handle = sc; 372 373 sc->sc_child = config_found(self, &ia, ir_print); 374 selinit(&sc->sc_rd_sel); 375 selinit(&sc->sc_wr_sel); 376 377 return; 378 } 379 380 void 381 ustir_childdet(device_t self, device_t child) 382 { 383 struct ustir_softc *sc = device_private(self); 384 385 KASSERT(sc->sc_child == child); 386 sc->sc_child = NULL; 387 } 388 389 int 390 ustir_detach(device_t self, int flags) 391 { 392 struct ustir_softc *sc = device_private(self); 393 int s; 394 int rv = 0; 395 396 DPRINTFN(0, ("ustir_detach: sc=%p flags=%d\n", sc, flags)); 397 398 sc->sc_closing = sc->sc_dying = 1; 399 400 wakeup(&sc->sc_thread); 401 402 while (sc->sc_thread != NULL) 403 tsleep(&sc->sc_closing, PWAIT, "usircl", 0); 404 405 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 406 if (sc->sc_rd_pipe != NULL) { 407 usbd_abort_pipe(sc->sc_rd_pipe); 408 usbd_close_pipe(sc->sc_rd_pipe); 409 sc->sc_rd_pipe = NULL; 410 } 411 if (sc->sc_wr_pipe != NULL) { 412 usbd_abort_pipe(sc->sc_wr_pipe); 413 usbd_close_pipe(sc->sc_wr_pipe); 414 sc->sc_wr_pipe = NULL; 415 } 416 wakeup(&sc->sc_ur_framelen); 417 wakeup(&sc->sc_wr_buf); 418 419 s = splusb(); 420 if (--sc->sc_refcnt >= 0) { 421 /* Wait for processes to go away. */ 422 usb_detach_waitold(sc->sc_dev); 423 } 424 splx(s); 425 426 if (sc->sc_child != NULL) 427 rv = config_detach(sc->sc_child, flags); 428 429 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 430 sc->sc_dev); 431 432 seldestroy(&sc->sc_rd_sel); 433 seldestroy(&sc->sc_wr_sel); 434 435 return rv; 436 } 437 438 Static void 439 deframe_clear(struct framestate *fstate) 440 { 441 fstate->bufindex = 0; 442 fstate->fsmstate = FSTATE_END_OF_FRAME; 443 fstate->escaped = 0; 444 } 445 446 Static void 447 deframe_init(struct framestate *fstate, struct framedefn const *definition, 448 u_int8_t *buf, size_t buflen) 449 { 450 fstate->definition = definition; 451 fstate->buffer = buf; 452 fstate->buflen = buflen; 453 454 deframe_clear(fstate); 455 } 456 457 Static enum frameresult 458 deframe_process(struct framestate *fstate, u_int8_t const **bptr, size_t *blen) 459 { 460 struct framedefn const *definition; 461 u_int8_t const *cptr; 462 u_int8_t escchr; 463 size_t ibuflen, obufindex, obuflen; 464 enum framefsmstate fsmstate; 465 enum frameresult result; 466 467 cptr = *bptr; 468 fsmstate = fstate->fsmstate; 469 definition = fstate->definition; 470 escchr = definition->esc_byte; 471 obufindex = fstate->bufindex; 472 obuflen = fstate->buflen; 473 ibuflen = *blen; 474 475 while (ibuflen-- > 0) { 476 u_int8_t chr; 477 478 chr = *cptr++; 479 480 if (fstate->escaped) { 481 fstate->escaped = 0; 482 chr ^= definition->esc_xor; 483 } else if (chr == escchr) { 484 fstate->escaped = 1; 485 continue; 486 } 487 488 switch (fsmstate) { 489 case FSTATE_IN_DATA: 490 if (chr == definition->eof_byte) { 491 fsmstate = FSTATE_IN_END; 492 fstate->state_index = definition->eof_count; 493 goto state_in_end; 494 } 495 if (obufindex >= obuflen) { 496 result = FR_BUFFEROVERRUN; 497 fsmstate = FSTATE_END_OF_FRAME; 498 goto complete; 499 } 500 fstate->buffer[obufindex++] = chr; 501 break; 502 503 state_in_end: 504 /* FALLTHROUGH */ 505 506 case FSTATE_IN_END: 507 if (--fstate->state_index == 0) { 508 u_int32_t crc; 509 size_t fcslen; 510 511 fsmstate = FSTATE_END_OF_FRAME; 512 513 fcslen = definition->fcs_count; 514 515 if (obufindex < fcslen) { 516 result = FR_FRAMEMALFORMED; 517 goto complete; 518 } 519 520 crc = definition-> 521 fcs_calc(definition->fcs_init, 522 fstate->buffer, obufindex); 523 524 /* Remove check bytes from buffer length */ 525 obufindex -= fcslen; 526 527 if (crc == definition->fcs_correct) 528 result = FR_FRAMEOK; 529 else 530 result = FR_FRAMEBADFCS; 531 532 goto complete; 533 } 534 break; 535 536 case FSTATE_END_OF_FRAME: 537 if (chr != definition->bof_byte) 538 break; 539 540 fsmstate = FSTATE_START_OF_FRAME; 541 fstate->state_index = definition->bof_count; 542 /* FALLTHROUGH */ 543 case FSTATE_START_OF_FRAME: 544 if (--fstate->state_index == 0) { 545 fsmstate = FSTATE_IN_DATA; 546 obufindex = 0; 547 } 548 break; 549 } 550 } 551 552 result = (fsmstate == FSTATE_END_OF_FRAME) ? FR_IDLE : FR_INPROGRESS; 553 554 complete: 555 fstate->bufindex = obufindex; 556 fstate->fsmstate = fsmstate; 557 *blen = ibuflen; 558 559 return result; 560 } 561 562 /* Returns 0 if more data required, 1 if a complete frame was extracted */ 563 static int 564 deframe_rd_ur(struct ustir_softc *sc) 565 { 566 while (sc->sc_rd_index < sc->sc_rd_count) { 567 u_int8_t const *buf; 568 size_t buflen; 569 enum frameresult fresult; 570 571 buf = &sc->sc_rd_buf[sc->sc_rd_index]; 572 buflen = sc->sc_rd_count - sc->sc_rd_index; 573 574 fresult = deframe_process(&sc->sc_framestate, &buf, &buflen); 575 576 sc->sc_rd_index = sc->sc_rd_count - buflen; 577 578 DPRINTFN(1,("%s: result=%d\n", __func__, (int)fresult)); 579 580 switch (fresult) { 581 case FR_IDLE: 582 case FR_INPROGRESS: 583 case FR_FRAMEBADFCS: 584 case FR_FRAMEMALFORMED: 585 case FR_BUFFEROVERRUN: 586 break; 587 case FR_FRAMEOK: 588 sc->sc_ur_framelen = sc->sc_framestate.bufindex; 589 wakeup(&sc->sc_ur_framelen); /* XXX should use flag */ 590 selnotify(&sc->sc_rd_sel, 0, 0); 591 return 1; 592 } 593 } 594 595 /* Reset indices into USB-side buffer */ 596 sc->sc_rd_index = sc->sc_rd_count = 0; 597 598 return 0; 599 } 600 601 /* 602 * Direction transitions: 603 * 604 * ustir_periodic() can switch the direction from: 605 * 606 * output -> idle 607 * output -> stalled 608 * stalled -> idle 609 * idle -> input 610 * 611 * ustir_rd_cb() can switch the direction from: 612 * 613 * input -> stalled 614 * input -> idle 615 * 616 * ustir_write() can switch the direction from: 617 * 618 * idle -> output 619 */ 620 Static void 621 ustir_periodic(struct ustir_softc *sc) 622 { 623 DPRINTFN(60, ("%s: direction = %d\n", 624 __func__, sc->sc_direction)); 625 626 if (sc->sc_direction == udir_output || 627 sc->sc_direction == udir_stalled) { 628 usbd_status err; 629 u_int8_t regval; 630 631 DPRINTFN(60, ("%s: reading status register\n", 632 __func__)); 633 634 err = ustir_read_reg(sc, STIR_REG_STATUS, 635 ®val); 636 if (err != USBD_NORMAL_COMPLETION) { 637 aprint_error_dev(sc->sc_dev, 638 "status register read failed: %s\n", 639 usbd_errstr(err)); 640 } else { 641 DPRINTFN(10, ("%s: status register = 0x%x\n", 642 __func__, 643 (unsigned int)regval)); 644 if (sc->sc_direction == udir_output && 645 !(regval & STIR_RSTATUS_FFDIR)) 646 /* Output has completed */ 647 sc->sc_direction = udir_idle; 648 if (regval & STIR_RSTATUS_FFOVER) { 649 /* 650 * On an overrun the FIFO hangs, and 651 * any data bulk transfers will stall. 652 * Reset the FIFO. 653 */ 654 sc->sc_direction = udir_stalled; 655 656 DPRINTFN(10, ("%s: clearing FIFO error\n", 657 __func__)); 658 659 err = ustir_write_reg(sc, STIR_REG_STATUS, 660 STIR_RSTATUS_FFCLR); 661 /* XXX if we fail partway through 662 * this, we may not recover? */ 663 if (err == USBD_NORMAL_COMPLETION) 664 err = ustir_write_reg(sc, 665 STIR_REG_STATUS, 666 0); 667 if (err != USBD_NORMAL_COMPLETION) { 668 aprint_error_dev(sc->sc_dev, 669 "FIFO reset failed: %s\n", 670 usbd_errstr(err)); 671 } else { 672 /* FIFO reset */ 673 sc->sc_direction = udir_idle; 674 } 675 } 676 } 677 } 678 679 if (sc->sc_wr_stalewrite && sc->sc_direction == udir_idle) { 680 /* 681 * In a stale write case, we need to check if the 682 * write has completed. Once that has happened, the 683 * write is no longer stale. 684 * 685 * But note that we may immediately start a read poll... 686 */ 687 sc->sc_wr_stalewrite = 0; 688 wakeup(&sc->sc_wr_buf); 689 } 690 691 if (!sc->sc_rd_readinprogress && 692 (sc->sc_direction == udir_idle || 693 sc->sc_direction == udir_input)) 694 /* Do a read poll if appropriate... */ 695 ustir_start_read(sc); 696 } 697 698 Static void 699 ustir_thread(void *arg) 700 { 701 struct ustir_softc *sc = arg; 702 703 DPRINTFN(20, ("%s: starting polling thread\n", __func__)); 704 705 while (!sc->sc_closing) { 706 if (!sc->sc_rd_readinprogress && !USTIR_BLOCK_RX_DATA(sc)) 707 ustir_periodic(sc); 708 709 if (!sc->sc_closing) { 710 int error; 711 error = tsleep(&sc->sc_thread, PWAIT, 712 "ustir", hz / 10); 713 if (error == EWOULDBLOCK && 714 sc->sc_rd_expectdataticks > 0) 715 /* 716 * After a timeout decrement the tick 717 * counter within which time we expect 718 * data to arrive if we are receiving 719 * data... 720 */ 721 sc->sc_rd_expectdataticks--; 722 } 723 } 724 725 DPRINTFN(20, ("%s: exiting polling thread\n", __func__)); 726 727 sc->sc_thread = NULL; 728 729 wakeup(&sc->sc_closing); 730 731 if (--sc->sc_refcnt < 0) 732 usb_detach_wakeupold(sc->sc_dev); 733 734 kthread_exit(0); 735 } 736 737 Static void 738 ustir_rd_cb(usbd_xfer_handle xfer, usbd_private_handle priv, 739 usbd_status status) 740 { 741 struct ustir_softc *sc = priv; 742 u_int32_t size; 743 744 DPRINTFN(60, ("%s: sc=%p\n", __func__, sc)); 745 746 /* Read is no longer in progress */ 747 sc->sc_rd_readinprogress = 0; 748 749 if (status == USBD_CANCELLED || sc->sc_closing) /* this is normal */ 750 return; 751 if (status) { 752 size = 0; 753 sc->sc_rd_err = 1; 754 755 if (sc->sc_direction == udir_input || 756 sc->sc_direction == udir_idle) { 757 /* 758 * Receive error, probably need to clear error 759 * condition. 760 */ 761 sc->sc_direction = udir_stalled; 762 } 763 } else { 764 usbd_get_xfer_status(xfer, NULL, NULL, &size, NULL); 765 } 766 767 sc->sc_rd_index = 0; 768 sc->sc_rd_count = size; 769 770 DPRINTFN(((size > 0 || sc->sc_rd_err != 0) ? 20 : 60), 771 ("%s: sc=%p size=%u, err=%d\n", __func__, 772 sc, size, sc->sc_rd_err)); 773 774 #ifdef USTIR_DEBUG 775 if (ustirdebug >= 20 && size > 0) 776 ustir_dumpdata(sc->sc_rd_buf, size, __func__); 777 #endif 778 779 if (!deframe_rd_ur(sc)) { 780 if (!deframe_isclear(&sc->sc_framestate) && size == 0 && 781 sc->sc_rd_expectdataticks == 0) { 782 /* 783 * Expected data, but didn't get it 784 * within expected time... 785 */ 786 DPRINTFN(5,("%s: incoming packet timeout\n", 787 __func__)); 788 deframe_clear(&sc->sc_framestate); 789 } else if (size > 0) { 790 /* 791 * If we also received actual data, reset the 792 * data read timeout and wake up the possibly 793 * sleeping thread... 794 */ 795 sc->sc_rd_expectdataticks = 2; 796 wakeup(&sc->sc_thread); 797 } 798 } 799 800 /* 801 * Check if incoming data has stopped, or that we cannot 802 * safely read any more data. In the case of the latter we 803 * must switch to idle so that a write will not block... 804 */ 805 if (sc->sc_direction == udir_input && 806 ((size == 0 && sc->sc_rd_expectdataticks == 0) || 807 USTIR_BLOCK_RX_DATA(sc))) { 808 DPRINTFN(8,("%s: idling on packet timeout, " 809 "complete frame, or no data\n", __func__)); 810 sc->sc_direction = udir_idle; 811 812 /* Wake up for possible output */ 813 wakeup(&sc->sc_wr_buf); 814 selnotify(&sc->sc_wr_sel, 0, 0); 815 } 816 } 817 818 Static usbd_status 819 ustir_start_read(struct ustir_softc *sc) 820 { 821 usbd_status err; 822 823 DPRINTFN(60,("%s: sc=%p, size=%d\n", __func__, sc, 824 sc->sc_params.maxsize)); 825 826 if (sc->sc_dying) 827 return USBD_IOERROR; 828 829 if (USTIR_BLOCK_RX_DATA(sc) || deframe_rd_ur(sc)) { 830 /* 831 * Can't start reading just yet. Since we aren't 832 * going to start a read, have to switch direction to 833 * idle. 834 */ 835 sc->sc_direction = udir_idle; 836 return USBD_NORMAL_COMPLETION; 837 } 838 839 /* Starting a read... */ 840 sc->sc_rd_readinprogress = 1; 841 sc->sc_direction = udir_input; 842 843 if (sc->sc_rd_err) { 844 sc->sc_rd_err = 0; 845 DPRINTFN(0, ("%s: clear stall\n", __func__)); 846 usbd_clear_endpoint_stall(sc->sc_rd_pipe); 847 } 848 849 usbd_setup_xfer(sc->sc_rd_xfer, sc->sc_rd_pipe, sc, sc->sc_rd_buf, 850 sc->sc_params.maxsize, 851 USBD_SHORT_XFER_OK | USBD_NO_COPY, 852 USBD_NO_TIMEOUT, ustir_rd_cb); 853 err = usbd_transfer(sc->sc_rd_xfer); 854 if (err != USBD_IN_PROGRESS) { 855 DPRINTFN(0, ("%s: err=%d\n", __func__, (int)err)); 856 return err; 857 } 858 return USBD_NORMAL_COMPLETION; 859 } 860 861 Static int 862 ustir_activate(device_t self, enum devact act) 863 { 864 struct ustir_softc *sc = device_private(self); 865 866 switch (act) { 867 case DVACT_DEACTIVATE: 868 sc->sc_dying = 1; 869 return 0; 870 default: 871 return EOPNOTSUPP; 872 } 873 } 874 875 /* ARGSUSED */ 876 Static int 877 ustir_open(void *h, int flag, int mode, 878 struct lwp *l) 879 { 880 struct ustir_softc *sc = h; 881 int error; 882 usbd_status err; 883 884 DPRINTFN(0, ("%s: sc=%p\n", __func__, sc)); 885 886 err = usbd_open_pipe(sc->sc_iface, sc->sc_rd_addr, 0, &sc->sc_rd_pipe); 887 if (err != USBD_NORMAL_COMPLETION) { 888 error = EIO; 889 goto bad1; 890 } 891 err = usbd_open_pipe(sc->sc_iface, sc->sc_wr_addr, 0, &sc->sc_wr_pipe); 892 if (err != USBD_NORMAL_COMPLETION) { 893 error = EIO; 894 goto bad2; 895 } 896 sc->sc_rd_xfer = usbd_alloc_xfer(sc->sc_udev); 897 if (sc->sc_rd_xfer == NULL) { 898 error = ENOMEM; 899 goto bad3; 900 } 901 sc->sc_wr_xfer = usbd_alloc_xfer(sc->sc_udev); 902 if (sc->sc_wr_xfer == NULL) { 903 error = ENOMEM; 904 goto bad4; 905 } 906 sc->sc_rd_buf = usbd_alloc_buffer(sc->sc_rd_xfer, 907 IRDA_MAX_FRAME_SIZE); 908 if (sc->sc_rd_buf == NULL) { 909 error = ENOMEM; 910 goto bad5; 911 } 912 sc->sc_wr_buf = usbd_alloc_buffer(sc->sc_wr_xfer, 913 IRDA_MAX_FRAME_SIZE + STIR_OUTPUT_HEADER_SIZE); 914 if (sc->sc_wr_buf == NULL) { 915 error = ENOMEM; 916 goto bad5; 917 } 918 sc->sc_ur_buf = malloc(IRDA_MAX_FRAME_SIZE, M_USBDEV, M_NOWAIT); 919 if (sc->sc_ur_buf == NULL) { 920 error = ENOMEM; 921 goto bad5; 922 } 923 924 sc->sc_rd_index = sc->sc_rd_count = 0; 925 sc->sc_closing = 0; 926 sc->sc_rd_readinprogress = 0; 927 sc->sc_rd_expectdataticks = 0; 928 sc->sc_ur_framelen = 0; 929 sc->sc_rd_err = 0; 930 sc->sc_wr_stalewrite = 0; 931 sc->sc_speedrec = NULL; 932 sc->sc_direction = udir_idle; 933 sc->sc_params.speed = 0; 934 sc->sc_params.ebofs = 0; 935 sc->sc_params.maxsize = IRDA_MAX_FRAME_SIZE; 936 937 deframe_init(&sc->sc_framestate, &framedef_sir, sc->sc_ur_buf, 938 IRDA_MAX_FRAME_SIZE); 939 940 /* Increment reference for thread */ 941 sc->sc_refcnt++; 942 943 error = kthread_create(PRI_NONE, 0, NULL, ustir_thread, sc, 944 &sc->sc_thread, "%s", device_xname(sc->sc_dev)); 945 if (error) { 946 sc->sc_refcnt--; 947 goto bad5; 948 } 949 950 return 0; 951 952 bad5: 953 usbd_free_xfer(sc->sc_wr_xfer); 954 sc->sc_wr_xfer = NULL; 955 bad4: 956 usbd_free_xfer(sc->sc_rd_xfer); 957 sc->sc_rd_xfer = NULL; 958 bad3: 959 usbd_close_pipe(sc->sc_wr_pipe); 960 sc->sc_wr_pipe = NULL; 961 bad2: 962 usbd_close_pipe(sc->sc_rd_pipe); 963 sc->sc_rd_pipe = NULL; 964 bad1: 965 return error; 966 } 967 968 /* ARGSUSED */ 969 Static int 970 ustir_close(void *h, int flag, int mode, 971 struct lwp *l) 972 { 973 struct ustir_softc *sc = h; 974 975 DPRINTFN(0, ("%s: sc=%p\n", __func__, sc)); 976 977 sc->sc_refcnt++; 978 979 sc->sc_rd_readinprogress = 1; 980 sc->sc_closing = 1; 981 982 wakeup(&sc->sc_thread); 983 984 while (sc->sc_thread != NULL) 985 tsleep(&sc->sc_closing, PWAIT, "usircl", 0); 986 987 if (sc->sc_rd_pipe != NULL) { 988 usbd_abort_pipe(sc->sc_rd_pipe); 989 usbd_close_pipe(sc->sc_rd_pipe); 990 sc->sc_rd_pipe = NULL; 991 } 992 if (sc->sc_wr_pipe != NULL) { 993 usbd_abort_pipe(sc->sc_wr_pipe); 994 usbd_close_pipe(sc->sc_wr_pipe); 995 sc->sc_wr_pipe = NULL; 996 } 997 if (sc->sc_rd_xfer != NULL) { 998 usbd_free_xfer(sc->sc_rd_xfer); 999 sc->sc_rd_xfer = NULL; 1000 sc->sc_rd_buf = NULL; 1001 } 1002 if (sc->sc_wr_xfer != NULL) { 1003 usbd_free_xfer(sc->sc_wr_xfer); 1004 sc->sc_wr_xfer = NULL; 1005 sc->sc_wr_buf = NULL; 1006 } 1007 if (sc->sc_ur_buf != NULL) { 1008 free(sc->sc_ur_buf, M_USBDEV); 1009 sc->sc_ur_buf = NULL; 1010 } 1011 1012 if (--sc->sc_refcnt < 0) 1013 usb_detach_wakeupold(sc->sc_dev); 1014 1015 return 0; 1016 } 1017 1018 /* ARGSUSED */ 1019 Static int 1020 ustir_read(void *h, struct uio *uio, int flag) 1021 { 1022 struct ustir_softc *sc = h; 1023 int s; 1024 int error; 1025 u_int uframelen; 1026 1027 DPRINTFN(1,("%s: sc=%p\n", __func__, sc)); 1028 1029 if (sc->sc_dying) 1030 return EIO; 1031 1032 #ifdef DIAGNOSTIC 1033 if (sc->sc_rd_buf == NULL) 1034 return EINVAL; 1035 #endif 1036 1037 sc->sc_refcnt++; 1038 1039 if (!sc->sc_rd_readinprogress && !USTIR_BLOCK_RX_DATA(sc)) 1040 /* Possibly wake up polling thread */ 1041 wakeup(&sc->sc_thread); 1042 1043 do { 1044 s = splusb(); 1045 while (sc->sc_ur_framelen == 0) { 1046 DPRINTFN(5,("%s: calling tsleep()\n", __func__)); 1047 error = tsleep(&sc->sc_ur_framelen, PZERO | PCATCH, 1048 "usirrd", 0); 1049 if (sc->sc_dying) 1050 error = EIO; 1051 if (error) { 1052 splx(s); 1053 DPRINTFN(0, ("%s: tsleep() = %d\n", 1054 __func__, error)); 1055 goto ret; 1056 } 1057 } 1058 splx(s); 1059 1060 uframelen = sc->sc_ur_framelen; 1061 DPRINTFN(1,("%s: sc=%p framelen=%u, hdr=0x%02x\n", 1062 __func__, sc, uframelen, sc->sc_ur_buf[0])); 1063 if (uframelen > uio->uio_resid) 1064 error = EINVAL; 1065 else 1066 error = uiomove(sc->sc_ur_buf, uframelen, uio); 1067 sc->sc_ur_framelen = 0; 1068 1069 if (!deframe_rd_ur(sc) && uframelen > 0) { 1070 /* 1071 * Need to wait for another read to obtain a 1072 * complete frame... If we also obtained 1073 * actual data, wake up the possibly sleeping 1074 * thread immediately... 1075 */ 1076 wakeup(&sc->sc_thread); 1077 } 1078 } while (uframelen == 0); 1079 1080 DPRINTFN(1,("%s: return %d\n", __func__, error)); 1081 1082 ret: 1083 if (--sc->sc_refcnt < 0) 1084 usb_detach_wakeupold(sc->sc_dev); 1085 return error; 1086 } 1087 1088 /* ARGSUSED */ 1089 Static int 1090 ustir_write(void *h, struct uio *uio, int flag) 1091 { 1092 struct ustir_softc *sc = h; 1093 usbd_status err; 1094 u_int32_t wrlen; 1095 int error, sirlength; 1096 u_int8_t *wrbuf; 1097 int s; 1098 1099 DPRINTFN(1,("%s: sc=%p\n", __func__, sc)); 1100 1101 if (sc->sc_dying) 1102 return EIO; 1103 1104 #ifdef DIAGNOSTIC 1105 if (sc->sc_wr_buf == NULL) 1106 return EINVAL; 1107 #endif 1108 1109 wrlen = uio->uio_resid; 1110 if (wrlen > sc->sc_params.maxsize) 1111 return EINVAL; 1112 1113 sc->sc_refcnt++; 1114 1115 if (!USTIR_BLOCK_RX_DATA(sc)) { 1116 /* 1117 * If reads are not blocked, determine what action we 1118 * should potentially take... 1119 */ 1120 if (sc->sc_direction == udir_output) { 1121 /* 1122 * If the last operation was an output, wait for the 1123 * polling thread to check for incoming data. 1124 */ 1125 sc->sc_wr_stalewrite = 1; 1126 wakeup(&sc->sc_thread); 1127 } else if (!sc->sc_rd_readinprogress && 1128 (sc->sc_direction == udir_idle || 1129 sc->sc_direction == udir_input)) { 1130 /* If idle, check for input before outputting */ 1131 ustir_start_read(sc); 1132 } 1133 } 1134 1135 s = splusb(); 1136 while (sc->sc_wr_stalewrite || 1137 (sc->sc_direction != udir_output && 1138 sc->sc_direction != udir_idle)) { 1139 DPRINTFN(5, ("%s: sc=%p stalewrite=%d direction=%d, " 1140 "calling tsleep()\n", __func__, 1141 sc, sc->sc_wr_stalewrite, sc->sc_direction)); 1142 error = tsleep(&sc->sc_wr_buf, PZERO | PCATCH, 1143 "usirwr", 0); 1144 if (sc->sc_dying) 1145 error = EIO; 1146 if (error) { 1147 splx(s); 1148 DPRINTFN(0, ("%s: tsleep() = %d\n", __func__, 1149 error)); 1150 goto ret; 1151 } 1152 } 1153 splx(s); 1154 1155 wrbuf = sc->sc_wr_buf; 1156 1157 /* Build header */ 1158 wrbuf[0] = STIR_OUTPUT_HEADER_BYTE0; 1159 wrbuf[1] = STIR_OUTPUT_HEADER_BYTE1; 1160 1161 sirlength = irda_sir_frame(&wrbuf[STIR_OUTPUT_HEADER_SIZE], 1162 MAX_USTIR_OUTPUT_FRAME - 1163 STIR_OUTPUT_HEADER_SIZE, 1164 uio, sc->sc_params.ebofs); 1165 if (sirlength < 0) { 1166 error = -sirlength; 1167 } else { 1168 u_int32_t btlen; 1169 1170 DPRINTFN(1, ("%s: transfer %u bytes\n", __func__, 1171 (unsigned int)wrlen)); 1172 1173 wrbuf[2] = sirlength & 0xff; 1174 wrbuf[3] = (sirlength >> 8) & 0xff; 1175 1176 btlen = STIR_OUTPUT_HEADER_SIZE + sirlength; 1177 1178 sc->sc_direction = udir_output; 1179 1180 #ifdef USTIR_DEBUG 1181 if (ustirdebug >= 20) 1182 ustir_dumpdata(wrbuf, btlen, __func__); 1183 #endif 1184 1185 err = usbd_bulk_transfer(sc->sc_wr_xfer, sc->sc_wr_pipe, 1186 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, 1187 USTIR_WR_TIMEOUT, 1188 wrbuf, &btlen, "ustiwr"); 1189 DPRINTFN(2, ("%s: err=%d\n", __func__, err)); 1190 if (err != USBD_NORMAL_COMPLETION) { 1191 if (err == USBD_INTERRUPTED) 1192 error = EINTR; 1193 else if (err == USBD_TIMEOUT) 1194 error = ETIMEDOUT; 1195 else 1196 error = EIO; 1197 } else { 1198 error = 0; 1199 } 1200 } 1201 1202 ret: 1203 if (--sc->sc_refcnt < 0) 1204 usb_detach_wakeupold(sc->sc_dev); 1205 1206 DPRINTFN(1,("%s: sc=%p done\n", __func__, sc)); 1207 return error; 1208 } 1209 1210 Static int 1211 ustir_poll(void *h, int events, struct lwp *l) 1212 { 1213 struct ustir_softc *sc = h; 1214 int revents = 0; 1215 1216 DPRINTFN(1,("%s: sc=%p\n", __func__, sc)); 1217 1218 if (events & (POLLOUT | POLLWRNORM)) { 1219 if (sc->sc_direction != udir_input) { 1220 revents |= events & (POLLOUT | POLLWRNORM); 1221 } else { 1222 DPRINTFN(2,("%s: recording write select\n", 1223 __func__)); 1224 selrecord(l, &sc->sc_wr_sel); 1225 } 1226 } 1227 1228 if (events & (POLLIN | POLLRDNORM)) { 1229 if (sc->sc_ur_framelen != 0) { 1230 DPRINTFN(2,("%s: have data\n", __func__)); 1231 revents |= events & (POLLIN | POLLRDNORM); 1232 } else { 1233 DPRINTFN(2,("%s: recording read select\n", 1234 __func__)); 1235 selrecord(l, &sc->sc_rd_sel); 1236 } 1237 } 1238 1239 return revents; 1240 } 1241 1242 static void 1243 filt_ustirrdetach(struct knote *kn) 1244 { 1245 struct ustir_softc *sc = kn->kn_hook; 1246 int s; 1247 1248 s = splusb(); 1249 SLIST_REMOVE(&sc->sc_rd_sel.sel_klist, kn, knote, kn_selnext); 1250 splx(s); 1251 } 1252 1253 /* ARGSUSED */ 1254 static int 1255 filt_ustirread(struct knote *kn, long hint) 1256 { 1257 struct ustir_softc *sc = kn->kn_hook; 1258 1259 kn->kn_data = sc->sc_ur_framelen; 1260 return (kn->kn_data > 0); 1261 } 1262 1263 static void 1264 filt_ustirwdetach(struct knote *kn) 1265 { 1266 struct ustir_softc *sc = kn->kn_hook; 1267 int s; 1268 1269 s = splusb(); 1270 SLIST_REMOVE(&sc->sc_wr_sel.sel_klist, kn, knote, kn_selnext); 1271 splx(s); 1272 } 1273 1274 /* ARGSUSED */ 1275 static int 1276 filt_ustirwrite(struct knote *kn, long hint) 1277 { 1278 struct ustir_softc *sc = kn->kn_hook; 1279 1280 kn->kn_data = 0; 1281 return (sc->sc_direction != udir_input); 1282 } 1283 1284 static const struct filterops ustirread_filtops = 1285 { 1, NULL, filt_ustirrdetach, filt_ustirread }; 1286 static const struct filterops ustirwrite_filtops = 1287 { 1, NULL, filt_ustirwdetach, filt_ustirwrite }; 1288 1289 Static int 1290 ustir_kqfilter(void *h, struct knote *kn) 1291 { 1292 struct ustir_softc *sc = h; 1293 struct klist *klist; 1294 int s; 1295 1296 switch (kn->kn_filter) { 1297 case EVFILT_READ: 1298 klist = &sc->sc_rd_sel.sel_klist; 1299 kn->kn_fop = &ustirread_filtops; 1300 break; 1301 case EVFILT_WRITE: 1302 klist = &sc->sc_wr_sel.sel_klist; 1303 kn->kn_fop = &ustirwrite_filtops; 1304 break; 1305 default: 1306 return (EINVAL); 1307 } 1308 1309 kn->kn_hook = sc; 1310 1311 s = splusb(); 1312 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 1313 splx(s); 1314 1315 return (0); 1316 } 1317 1318 #ifdef USTIR_DEBUG_IOCTLS 1319 Static int ustir_ioctl(void *h, u_long cmd, void *addr, int flag, struct lwp *l) 1320 { 1321 struct ustir_softc *sc = h; 1322 int error; 1323 unsigned int regnum; 1324 usbd_status err; 1325 u_int8_t regdata; 1326 1327 if (sc->sc_dying) 1328 return EIO; 1329 1330 sc->sc_refcnt++; 1331 1332 error = 0; 1333 switch (cmd) { 1334 case USTIR_READ_REGISTER: 1335 regnum = *(unsigned int *)addr; 1336 1337 if (regnum > STIR_MAX_REG) { 1338 error = EINVAL; 1339 break; 1340 } 1341 1342 err = ustir_read_reg(sc, regnum, ®data); 1343 1344 DPRINTFN(10, ("%s: regget(%u) = 0x%x\n", __func__, 1345 regnum, (unsigned int)regdata)); 1346 1347 *(unsigned int *)addr = regdata; 1348 if (err != USBD_NORMAL_COMPLETION) { 1349 printf("%s: register read failed: %s\n", 1350 device_xname(sc->sc_dev), 1351 usbd_errstr(err)); 1352 error = EIO; 1353 } 1354 break; 1355 1356 case USTIR_WRITE_REGISTER: 1357 regnum = *(unsigned int *)addr; 1358 regdata = (regnum >> 8) & 0xff; 1359 regnum = regnum & 0xff; 1360 1361 if (regnum > STIR_MAX_REG) { 1362 error = EINVAL; 1363 break; 1364 } 1365 1366 DPRINTFN(10, ("%s: regset(%u, 0x%x)\n", __func__, 1367 regnum, (unsigned int)regdata)); 1368 1369 err = ustir_write_reg(sc, regnum, regdata); 1370 if (err != USBD_NORMAL_COMPLETION) { 1371 printf("%s: register write failed: %s\n", 1372 device_xname(sc->sc_dev), 1373 usbd_errstr(err)); 1374 error = EIO; 1375 } 1376 break; 1377 1378 case USTIR_DEBUG_LEVEL: 1379 #ifdef USTIR_DEBUG 1380 ustirdebug = *(int *)addr; 1381 #endif 1382 break; 1383 1384 case USTIR_DEBUG_OPERATION: 1385 break; 1386 1387 default: 1388 error = EINVAL; 1389 break; 1390 } 1391 1392 if (--sc->sc_refcnt < 0) 1393 usb_detach_wakeupold(sc->sc_dev); 1394 1395 return error; 1396 } 1397 #endif 1398 1399 Static int 1400 ustir_set_params(void *h, struct irda_params *p) 1401 { 1402 struct ustir_softc *sc = h; 1403 struct ustir_speedrec const *speedblk; 1404 int i; 1405 1406 DPRINTFN(0, ("%s: sc=%p, speed=%d ebofs=%d maxsize=%d\n", __func__, 1407 sc, p->speed, p->ebofs, p->maxsize)); 1408 1409 if (sc->sc_dying) 1410 return EIO; 1411 1412 speedblk = NULL; 1413 1414 if (sc->sc_speedrec == NULL || p->speed != sc->sc_speedrec->speed) { 1415 /* find speed */ 1416 for (i = 0; i < USTIR_NSPEEDS; i++) { 1417 if (ustir_speeds[i].speed == p->speed) { 1418 speedblk = &ustir_speeds[i]; 1419 goto found2; 1420 } 1421 } 1422 /* no good value found */ 1423 return EINVAL; 1424 found2: 1425 ; 1426 } 1427 if (p->maxsize != sc->sc_params.maxsize) { 1428 if (p->maxsize > IRDA_MAX_FRAME_SIZE) 1429 return EINVAL; 1430 sc->sc_params.maxsize = p->maxsize; 1431 } 1432 1433 sc->sc_params = *p; 1434 1435 if (speedblk != NULL) { 1436 usbd_status err; 1437 u_int8_t regmode; 1438 u_int8_t regbrate; 1439 1440 sc->sc_speedrec = speedblk; 1441 1442 regmode = STIR_BRMODE_MODEREG(speedblk->config); 1443 regbrate = STIR_BRMODE_BRATEREG(speedblk->config); 1444 1445 /* 1446 * FFSPRST must be set to enable the FIFO. 1447 */ 1448 regmode |= STIR_RMODE_FFSPRST; 1449 1450 DPRINTFN(10, ("%s: setting BRATE = %x\n", __func__, 1451 (unsigned int)regbrate)); 1452 err = ustir_write_reg(sc, STIR_REG_BRATE, regbrate); 1453 if (err == USBD_NORMAL_COMPLETION) { 1454 DPRINTFN(10, ("%s: setting MODE = %x\n", __func__, 1455 (unsigned int)regmode)); 1456 err = ustir_write_reg(sc, STIR_REG_MODE, regmode); 1457 } 1458 if (err != USBD_NORMAL_COMPLETION) { 1459 DPRINTFN(10, ("%s: error setting register: %s\n", 1460 __func__, usbd_errstr(err))); 1461 return EIO; 1462 } 1463 } 1464 1465 return 0; 1466 } 1467 1468 Static int 1469 ustir_get_speeds(void *h, int *speeds) 1470 { 1471 struct ustir_softc *sc = h; 1472 1473 DPRINTFN(0, ("%s: sc=%p\n", __func__, sc)); 1474 1475 if (sc->sc_dying) 1476 return EIO; 1477 1478 /* All these speeds are supported */ 1479 *speeds = IRDA_SPEED_4000000 | 1480 IRDA_SPEED_1152000 | 1481 IRDA_SPEED_576000 | 1482 IRDA_SPEED_115200 | 1483 IRDA_SPEED_57600 | 1484 IRDA_SPEED_38400 | 1485 IRDA_SPEED_19200 | 1486 IRDA_SPEED_9600 | 1487 IRDA_SPEED_2400; 1488 1489 return 0; 1490 } 1491 1492 Static int 1493 ustir_get_turnarounds(void *h, int *turnarounds) 1494 { 1495 struct ustir_softc *sc = h; 1496 1497 DPRINTFN(0, ("%s: sc=%p\n", __func__, sc)); 1498 1499 if (sc->sc_dying) 1500 return EIO; 1501 1502 /* 1503 * Documentation is on the light side with respect to 1504 * turnaround time for this device. 1505 */ 1506 *turnarounds = IRDA_TURNT_10000; 1507 1508 return 0; 1509 } 1510
Indexes created Thu Sep 25 16:09:42 GMT 2025