ustir.c revision 1.28
1 /* $NetBSD: ustir.c,v 1.28 2009/11/12 20:01:15 dyoung 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 1.28 2009/11/12 20:01:15 dyoung 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)) logprintf 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 USBBASEDEVICE 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_ptr_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 USB_MATCH(ustir) 294 { 295 USB_MATCH_START(ustir, uaa); 296 297 DPRINTFN(50,("ustir_match\n")); 298 299 if (uaa->vendor == USB_VENDOR_SIGMATEL && 300 uaa->product == USB_PRODUCT_SIGMATEL_IRDA) 301 return UMATCH_VENDOR_PRODUCT; 302 303 return UMATCH_NONE; 304 } 305 306 USB_ATTACH(ustir) 307 { 308 USB_ATTACH_START(ustir, sc, uaa); 309 usbd_device_handle dev = uaa->device; 310 usbd_interface_handle iface; 311 char *devinfop; 312 usb_endpoint_descriptor_t *ed; 313 u_int8_t epcount; 314 int i; 315 struct ir_attach_args ia; 316 317 DPRINTFN(10,("ustir_attach: sc=%p\n", sc)); 318 319 sc->sc_dev = self; 320 321 aprint_naive("\n"); 322 aprint_normal("\n"); 323 324 devinfop = usbd_devinfo_alloc(dev, 0); 325 aprint_normal_dev(self, "%s\n", devinfop); 326 usbd_devinfo_free(devinfop); 327 328 if (usbd_set_config_index(dev, 0, 1) 329 || usbd_device2interface_handle(dev, 0, &iface)) { 330 aprint_error_dev(self, "Configuration failed\n"); 331 USB_ATTACH_ERROR_RETURN; 332 } 333 334 sc->sc_udev = dev; 335 sc->sc_iface = iface; 336 337 epcount = 0; 338 (void)usbd_endpoint_count(iface, &epcount); 339 340 sc->sc_rd_addr = -1; 341 sc->sc_wr_addr = -1; 342 for (i = 0; i < epcount; i++) { 343 ed = usbd_interface2endpoint_descriptor(iface, i); 344 if (ed == NULL) { 345 aprint_error_dev(self, "couldn't get ep %d\n", i); 346 USB_ATTACH_ERROR_RETURN; 347 } 348 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 349 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 350 sc->sc_rd_addr = ed->bEndpointAddress; 351 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 352 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 353 sc->sc_wr_addr = ed->bEndpointAddress; 354 } 355 } 356 if (sc->sc_rd_addr == -1 || sc->sc_wr_addr == -1) { 357 aprint_error_dev(self, "missing endpoint\n"); 358 USB_ATTACH_ERROR_RETURN; 359 } 360 361 DPRINTFN(10, ("ustir_attach: %p\n", sc->sc_udev)); 362 363 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 364 USBDEV(sc->sc_dev)); 365 366 ia.ia_type = IR_TYPE_IRFRAME; 367 ia.ia_methods = &ustir_methods; 368 ia.ia_handle = sc; 369 370 sc->sc_child = config_found(self, &ia, ir_print); 371 selinit(&sc->sc_rd_sel); 372 selinit(&sc->sc_wr_sel); 373 374 USB_ATTACH_SUCCESS_RETURN; 375 } 376 377 void 378 ustir_childdet(device_t self, device_t child) 379 { 380 struct ustir_softc *sc = device_private(self); 381 382 KASSERT(sc->sc_child == child); 383 sc->sc_child = NULL; 384 } 385 386 USB_DETACH(ustir) 387 { 388 USB_DETACH_START(ustir, sc); 389 int s; 390 int rv = 0; 391 392 DPRINTFN(0, ("ustir_detach: sc=%p flags=%d\n", sc, flags)); 393 394 sc->sc_closing = sc->sc_dying = 1; 395 396 wakeup(&sc->sc_thread); 397 398 while (sc->sc_thread != NULL) 399 tsleep(&sc->sc_closing, PWAIT, "usircl", 0); 400 401 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 402 if (sc->sc_rd_pipe != NULL) { 403 usbd_abort_pipe(sc->sc_rd_pipe); 404 usbd_close_pipe(sc->sc_rd_pipe); 405 sc->sc_rd_pipe = NULL; 406 } 407 if (sc->sc_wr_pipe != NULL) { 408 usbd_abort_pipe(sc->sc_wr_pipe); 409 usbd_close_pipe(sc->sc_wr_pipe); 410 sc->sc_wr_pipe = NULL; 411 } 412 wakeup(&sc->sc_ur_framelen); 413 wakeup(&sc->sc_wr_buf); 414 415 s = splusb(); 416 if (--sc->sc_refcnt >= 0) { 417 /* Wait for processes to go away. */ 418 usb_detach_wait(USBDEV(sc->sc_dev)); 419 } 420 splx(s); 421 422 if (sc->sc_child != NULL) 423 rv = config_detach(sc->sc_child, flags); 424 425 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 426 USBDEV(sc->sc_dev)); 427 428 seldestroy(&sc->sc_rd_sel); 429 seldestroy(&sc->sc_wr_sel); 430 431 return rv; 432 } 433 434 Static void 435 deframe_clear(struct framestate *fstate) 436 { 437 fstate->bufindex = 0; 438 fstate->fsmstate = FSTATE_END_OF_FRAME; 439 fstate->escaped = 0; 440 } 441 442 Static void 443 deframe_init(struct framestate *fstate, struct framedefn const *definition, 444 u_int8_t *buf, size_t buflen) 445 { 446 fstate->definition = definition; 447 fstate->buffer = buf; 448 fstate->buflen = buflen; 449 450 deframe_clear(fstate); 451 } 452 453 Static enum frameresult 454 deframe_process(struct framestate *fstate, u_int8_t const **bptr, size_t *blen) 455 { 456 struct framedefn const *definition; 457 u_int8_t const *cptr; 458 u_int8_t escchr; 459 size_t ibuflen, obufindex, obuflen; 460 enum framefsmstate fsmstate; 461 enum frameresult result; 462 463 cptr = *bptr; 464 fsmstate = fstate->fsmstate; 465 definition = fstate->definition; 466 escchr = definition->esc_byte; 467 obufindex = fstate->bufindex; 468 obuflen = fstate->buflen; 469 ibuflen = *blen; 470 471 while (ibuflen-- > 0) { 472 u_int8_t chr; 473 474 chr = *cptr++; 475 476 if (fstate->escaped) { 477 fstate->escaped = 0; 478 chr ^= definition->esc_xor; 479 } else if (chr == escchr) { 480 fstate->escaped = 1; 481 continue; 482 } 483 484 switch (fsmstate) { 485 case FSTATE_IN_DATA: 486 if (chr == definition->eof_byte) { 487 fsmstate = FSTATE_IN_END; 488 fstate->state_index = definition->eof_count; 489 goto state_in_end; 490 } 491 if (obufindex >= obuflen) { 492 result = FR_BUFFEROVERRUN; 493 fsmstate = FSTATE_END_OF_FRAME; 494 goto complete; 495 } 496 fstate->buffer[obufindex++] = chr; 497 break; 498 499 state_in_end: 500 /* FALLTHROUGH */ 501 502 case FSTATE_IN_END: 503 if (--fstate->state_index == 0) { 504 u_int32_t crc; 505 size_t fcslen; 506 507 fsmstate = FSTATE_END_OF_FRAME; 508 509 fcslen = definition->fcs_count; 510 511 if (obufindex < fcslen) { 512 result = FR_FRAMEMALFORMED; 513 goto complete; 514 } 515 516 crc = definition-> 517 fcs_calc(definition->fcs_init, 518 fstate->buffer, obufindex); 519 520 /* Remove check bytes from buffer length */ 521 obufindex -= fcslen; 522 523 if (crc == definition->fcs_correct) 524 result = FR_FRAMEOK; 525 else 526 result = FR_FRAMEBADFCS; 527 528 goto complete; 529 } 530 break; 531 532 case FSTATE_END_OF_FRAME: 533 if (chr != definition->bof_byte) 534 break; 535 536 fsmstate = FSTATE_START_OF_FRAME; 537 fstate->state_index = definition->bof_count; 538 /* FALLTHROUGH */ 539 case FSTATE_START_OF_FRAME: 540 if (--fstate->state_index == 0) { 541 fsmstate = FSTATE_IN_DATA; 542 obufindex = 0; 543 } 544 break; 545 } 546 } 547 548 result = (fsmstate == FSTATE_END_OF_FRAME) ? FR_IDLE : FR_INPROGRESS; 549 550 complete: 551 fstate->bufindex = obufindex; 552 fstate->fsmstate = fsmstate; 553 *blen = ibuflen; 554 555 return result; 556 } 557 558 /* Returns 0 if more data required, 1 if a complete frame was extracted */ 559 static int 560 deframe_rd_ur(struct ustir_softc *sc) 561 { 562 while (sc->sc_rd_index < sc->sc_rd_count) { 563 u_int8_t const *buf; 564 size_t buflen; 565 enum frameresult fresult; 566 567 buf = &sc->sc_rd_buf[sc->sc_rd_index]; 568 buflen = sc->sc_rd_count - sc->sc_rd_index; 569 570 fresult = deframe_process(&sc->sc_framestate, &buf, &buflen); 571 572 sc->sc_rd_index = sc->sc_rd_count - buflen; 573 574 DPRINTFN(1,("%s: result=%d\n", __func__, (int)fresult)); 575 576 switch (fresult) { 577 case FR_IDLE: 578 case FR_INPROGRESS: 579 case FR_FRAMEBADFCS: 580 case FR_FRAMEMALFORMED: 581 case FR_BUFFEROVERRUN: 582 break; 583 case FR_FRAMEOK: 584 sc->sc_ur_framelen = sc->sc_framestate.bufindex; 585 wakeup(&sc->sc_ur_framelen); /* XXX should use flag */ 586 selnotify(&sc->sc_rd_sel, 0, 0); 587 return 1; 588 } 589 } 590 591 /* Reset indices into USB-side buffer */ 592 sc->sc_rd_index = sc->sc_rd_count = 0; 593 594 return 0; 595 } 596 597 /* 598 * Direction transitions: 599 * 600 * ustir_periodic() can switch the direction from: 601 * 602 * output -> idle 603 * output -> stalled 604 * stalled -> idle 605 * idle -> input 606 * 607 * ustir_rd_cb() can switch the direction from: 608 * 609 * input -> stalled 610 * input -> idle 611 * 612 * ustir_write() can switch the direction from: 613 * 614 * idle -> output 615 */ 616 Static void 617 ustir_periodic(struct ustir_softc *sc) 618 { 619 DPRINTFN(60, ("%s: direction = %d\n", 620 __func__, sc->sc_direction)); 621 622 if (sc->sc_direction == udir_output || 623 sc->sc_direction == udir_stalled) { 624 usbd_status err; 625 u_int8_t regval; 626 627 DPRINTFN(60, ("%s: reading status register\n", 628 __func__)); 629 630 err = ustir_read_reg(sc, STIR_REG_STATUS, 631 ®val); 632 if (err != USBD_NORMAL_COMPLETION) { 633 aprint_error_dev(sc->sc_dev, 634 "status register read failed: %s\n", 635 usbd_errstr(err)); 636 } else { 637 DPRINTFN(10, ("%s: status register = 0x%x\n", 638 __func__, 639 (unsigned int)regval)); 640 if (sc->sc_direction == udir_output && 641 !(regval & STIR_RSTATUS_FFDIR)) 642 /* Output has completed */ 643 sc->sc_direction = udir_idle; 644 if (regval & STIR_RSTATUS_FFOVER) { 645 /* 646 * On an overrun the FIFO hangs, and 647 * any data bulk transfers will stall. 648 * Reset the FIFO. 649 */ 650 sc->sc_direction = udir_stalled; 651 652 DPRINTFN(10, ("%s: clearing FIFO error\n", 653 __func__)); 654 655 err = ustir_write_reg(sc, STIR_REG_STATUS, 656 STIR_RSTATUS_FFCLR); 657 /* XXX if we fail partway through 658 * this, we may not recover? */ 659 if (err == USBD_NORMAL_COMPLETION) 660 err = ustir_write_reg(sc, 661 STIR_REG_STATUS, 662 0); 663 if (err != USBD_NORMAL_COMPLETION) { 664 aprint_error_dev(sc->sc_dev, 665 "FIFO reset failed: %s\n", 666 usbd_errstr(err)); 667 } else { 668 /* FIFO reset */ 669 sc->sc_direction = udir_idle; 670 } 671 } 672 } 673 } 674 675 if (sc->sc_wr_stalewrite && sc->sc_direction == udir_idle) { 676 /* 677 * In a stale write case, we need to check if the 678 * write has completed. Once that has happened, the 679 * write is no longer stale. 680 * 681 * But note that we may immediately start a read poll... 682 */ 683 sc->sc_wr_stalewrite = 0; 684 wakeup(&sc->sc_wr_buf); 685 } 686 687 if (!sc->sc_rd_readinprogress && 688 (sc->sc_direction == udir_idle || 689 sc->sc_direction == udir_input)) 690 /* Do a read poll if appropriate... */ 691 ustir_start_read(sc); 692 } 693 694 Static void 695 ustir_thread(void *arg) 696 { 697 struct ustir_softc *sc = arg; 698 699 DPRINTFN(20, ("%s: starting polling thread\n", __func__)); 700 701 while (!sc->sc_closing) { 702 if (!sc->sc_rd_readinprogress && !USTIR_BLOCK_RX_DATA(sc)) 703 ustir_periodic(sc); 704 705 if (!sc->sc_closing) { 706 int error; 707 error = tsleep(&sc->sc_thread, PWAIT, 708 "ustir", hz / 10); 709 if (error == EWOULDBLOCK && 710 sc->sc_rd_expectdataticks > 0) 711 /* 712 * After a timeout decrement the tick 713 * counter within which time we expect 714 * data to arrive if we are receiving 715 * data... 716 */ 717 sc->sc_rd_expectdataticks--; 718 } 719 } 720 721 DPRINTFN(20, ("%s: exiting polling thread\n", __func__)); 722 723 sc->sc_thread = NULL; 724 725 wakeup(&sc->sc_closing); 726 727 if (--sc->sc_refcnt < 0) 728 usb_detach_wakeup(USBDEV(sc->sc_dev)); 729 730 kthread_exit(0); 731 } 732 733 Static void 734 ustir_rd_cb(usbd_xfer_handle xfer, usbd_private_handle priv, 735 usbd_status status) 736 { 737 struct ustir_softc *sc = priv; 738 u_int32_t size; 739 740 DPRINTFN(60, ("%s: sc=%p\n", __func__, sc)); 741 742 /* Read is no longer in progress */ 743 sc->sc_rd_readinprogress = 0; 744 745 if (status == USBD_CANCELLED || sc->sc_closing) /* this is normal */ 746 return; 747 if (status) { 748 size = 0; 749 sc->sc_rd_err = 1; 750 751 if (sc->sc_direction == udir_input || 752 sc->sc_direction == udir_idle) { 753 /* 754 * Receive error, probably need to clear error 755 * condition. 756 */ 757 sc->sc_direction = udir_stalled; 758 } 759 } else { 760 usbd_get_xfer_status(xfer, NULL, NULL, &size, NULL); 761 } 762 763 sc->sc_rd_index = 0; 764 sc->sc_rd_count = size; 765 766 DPRINTFN(((size > 0 || sc->sc_rd_err != 0) ? 20 : 60), 767 ("%s: sc=%p size=%u, err=%d\n", __func__, 768 sc, size, sc->sc_rd_err)); 769 770 #ifdef USTIR_DEBUG 771 if (ustirdebug >= 20 && size > 0) 772 ustir_dumpdata(sc->sc_rd_buf, size, __func__); 773 #endif 774 775 if (!deframe_rd_ur(sc)) { 776 if (!deframe_isclear(&sc->sc_framestate) && size == 0 && 777 sc->sc_rd_expectdataticks == 0) { 778 /* 779 * Expected data, but didn't get it 780 * within expected time... 781 */ 782 DPRINTFN(5,("%s: incoming packet timeout\n", 783 __func__)); 784 deframe_clear(&sc->sc_framestate); 785 } else if (size > 0) { 786 /* 787 * If we also received actual data, reset the 788 * data read timeout and wake up the possibly 789 * sleeping thread... 790 */ 791 sc->sc_rd_expectdataticks = 2; 792 wakeup(&sc->sc_thread); 793 } 794 } 795 796 /* 797 * Check if incoming data has stopped, or that we cannot 798 * safely read any more data. In the case of the latter we 799 * must switch to idle so that a write will not block... 800 */ 801 if (sc->sc_direction == udir_input && 802 ((size == 0 && sc->sc_rd_expectdataticks == 0) || 803 USTIR_BLOCK_RX_DATA(sc))) { 804 DPRINTFN(8,("%s: idling on packet timeout, " 805 "complete frame, or no data\n", __func__)); 806 sc->sc_direction = udir_idle; 807 808 /* Wake up for possible output */ 809 wakeup(&sc->sc_wr_buf); 810 selnotify(&sc->sc_wr_sel, 0, 0); 811 } 812 } 813 814 Static usbd_status 815 ustir_start_read(struct ustir_softc *sc) 816 { 817 usbd_status err; 818 819 DPRINTFN(60,("%s: sc=%p, size=%d\n", __func__, sc, 820 sc->sc_params.maxsize)); 821 822 if (sc->sc_dying) 823 return USBD_IOERROR; 824 825 if (USTIR_BLOCK_RX_DATA(sc) || deframe_rd_ur(sc)) { 826 /* 827 * Can't start reading just yet. Since we aren't 828 * going to start a read, have to switch direction to 829 * idle. 830 */ 831 sc->sc_direction = udir_idle; 832 return USBD_NORMAL_COMPLETION; 833 } 834 835 /* Starting a read... */ 836 sc->sc_rd_readinprogress = 1; 837 sc->sc_direction = udir_input; 838 839 if (sc->sc_rd_err) { 840 sc->sc_rd_err = 0; 841 DPRINTFN(0, ("%s: clear stall\n", __func__)); 842 usbd_clear_endpoint_stall(sc->sc_rd_pipe); 843 } 844 845 usbd_setup_xfer(sc->sc_rd_xfer, sc->sc_rd_pipe, sc, sc->sc_rd_buf, 846 sc->sc_params.maxsize, 847 USBD_SHORT_XFER_OK | USBD_NO_COPY, 848 USBD_NO_TIMEOUT, ustir_rd_cb); 849 err = usbd_transfer(sc->sc_rd_xfer); 850 if (err != USBD_IN_PROGRESS) { 851 DPRINTFN(0, ("%s: err=%d\n", __func__, (int)err)); 852 return err; 853 } 854 return USBD_NORMAL_COMPLETION; 855 } 856 857 Static int 858 ustir_activate(device_t self, enum devact act) 859 { 860 struct ustir_softc *sc = device_private(self); 861 862 switch (act) { 863 case DVACT_DEACTIVATE: 864 sc->sc_dying = 1; 865 return 0; 866 default: 867 return EOPNOTSUPP; 868 } 869 } 870 871 /* ARGSUSED */ 872 Static int 873 ustir_open(void *h, int flag, int mode, 874 struct lwp *l) 875 { 876 struct ustir_softc *sc = h; 877 int error; 878 usbd_status err; 879 880 DPRINTFN(0, ("%s: sc=%p\n", __func__, sc)); 881 882 err = usbd_open_pipe(sc->sc_iface, sc->sc_rd_addr, 0, &sc->sc_rd_pipe); 883 if (err != USBD_NORMAL_COMPLETION) { 884 error = EIO; 885 goto bad1; 886 } 887 err = usbd_open_pipe(sc->sc_iface, sc->sc_wr_addr, 0, &sc->sc_wr_pipe); 888 if (err != USBD_NORMAL_COMPLETION) { 889 error = EIO; 890 goto bad2; 891 } 892 sc->sc_rd_xfer = usbd_alloc_xfer(sc->sc_udev); 893 if (sc->sc_rd_xfer == NULL) { 894 error = ENOMEM; 895 goto bad3; 896 } 897 sc->sc_wr_xfer = usbd_alloc_xfer(sc->sc_udev); 898 if (sc->sc_wr_xfer == NULL) { 899 error = ENOMEM; 900 goto bad4; 901 } 902 sc->sc_rd_buf = usbd_alloc_buffer(sc->sc_rd_xfer, 903 IRDA_MAX_FRAME_SIZE); 904 if (sc->sc_rd_buf == NULL) { 905 error = ENOMEM; 906 goto bad5; 907 } 908 sc->sc_wr_buf = usbd_alloc_buffer(sc->sc_wr_xfer, 909 IRDA_MAX_FRAME_SIZE + STIR_OUTPUT_HEADER_SIZE); 910 if (sc->sc_wr_buf == NULL) { 911 error = ENOMEM; 912 goto bad5; 913 } 914 sc->sc_ur_buf = malloc(IRDA_MAX_FRAME_SIZE, M_USBDEV, M_NOWAIT); 915 if (sc->sc_ur_buf == NULL) { 916 error = ENOMEM; 917 goto bad5; 918 } 919 920 sc->sc_rd_index = sc->sc_rd_count = 0; 921 sc->sc_closing = 0; 922 sc->sc_rd_readinprogress = 0; 923 sc->sc_rd_expectdataticks = 0; 924 sc->sc_ur_framelen = 0; 925 sc->sc_rd_err = 0; 926 sc->sc_wr_stalewrite = 0; 927 sc->sc_speedrec = NULL; 928 sc->sc_direction = udir_idle; 929 sc->sc_params.speed = 0; 930 sc->sc_params.ebofs = 0; 931 sc->sc_params.maxsize = IRDA_MAX_FRAME_SIZE; 932 933 deframe_init(&sc->sc_framestate, &framedef_sir, sc->sc_ur_buf, 934 IRDA_MAX_FRAME_SIZE); 935 936 /* Increment reference for thread */ 937 sc->sc_refcnt++; 938 939 error = kthread_create(PRI_NONE, 0, NULL, ustir_thread, sc, 940 &sc->sc_thread, "%s", device_xname(sc->sc_dev)); 941 if (error) { 942 sc->sc_refcnt--; 943 goto bad5; 944 } 945 946 return 0; 947 948 bad5: 949 usbd_free_xfer(sc->sc_wr_xfer); 950 sc->sc_wr_xfer = NULL; 951 bad4: 952 usbd_free_xfer(sc->sc_rd_xfer); 953 sc->sc_rd_xfer = NULL; 954 bad3: 955 usbd_close_pipe(sc->sc_wr_pipe); 956 sc->sc_wr_pipe = NULL; 957 bad2: 958 usbd_close_pipe(sc->sc_rd_pipe); 959 sc->sc_rd_pipe = NULL; 960 bad1: 961 return error; 962 } 963 964 /* ARGSUSED */ 965 Static int 966 ustir_close(void *h, int flag, int mode, 967 struct lwp *l) 968 { 969 struct ustir_softc *sc = h; 970 971 DPRINTFN(0, ("%s: sc=%p\n", __func__, sc)); 972 973 sc->sc_refcnt++; 974 975 sc->sc_rd_readinprogress = 1; 976 sc->sc_closing = 1; 977 978 wakeup(&sc->sc_thread); 979 980 while (sc->sc_thread != NULL) 981 tsleep(&sc->sc_closing, PWAIT, "usircl", 0); 982 983 if (sc->sc_rd_pipe != NULL) { 984 usbd_abort_pipe(sc->sc_rd_pipe); 985 usbd_close_pipe(sc->sc_rd_pipe); 986 sc->sc_rd_pipe = NULL; 987 } 988 if (sc->sc_wr_pipe != NULL) { 989 usbd_abort_pipe(sc->sc_wr_pipe); 990 usbd_close_pipe(sc->sc_wr_pipe); 991 sc->sc_wr_pipe = NULL; 992 } 993 if (sc->sc_rd_xfer != NULL) { 994 usbd_free_xfer(sc->sc_rd_xfer); 995 sc->sc_rd_xfer = NULL; 996 sc->sc_rd_buf = NULL; 997 } 998 if (sc->sc_wr_xfer != NULL) { 999 usbd_free_xfer(sc->sc_wr_xfer); 1000 sc->sc_wr_xfer = NULL; 1001 sc->sc_wr_buf = NULL; 1002 } 1003 if (sc->sc_ur_buf != NULL) { 1004 free(sc->sc_ur_buf, M_USBDEV); 1005 sc->sc_ur_buf = NULL; 1006 } 1007 1008 if (--sc->sc_refcnt < 0) 1009 usb_detach_wakeup(USBDEV(sc->sc_dev)); 1010 1011 return 0; 1012 } 1013 1014 /* ARGSUSED */ 1015 Static int 1016 ustir_read(void *h, struct uio *uio, int flag) 1017 { 1018 struct ustir_softc *sc = h; 1019 int s; 1020 int error; 1021 u_int uframelen; 1022 1023 DPRINTFN(1,("%s: sc=%p\n", __func__, sc)); 1024 1025 if (sc->sc_dying) 1026 return EIO; 1027 1028 #ifdef DIAGNOSTIC 1029 if (sc->sc_rd_buf == NULL) 1030 return EINVAL; 1031 #endif 1032 1033 sc->sc_refcnt++; 1034 1035 if (!sc->sc_rd_readinprogress && !USTIR_BLOCK_RX_DATA(sc)) 1036 /* Possibly wake up polling thread */ 1037 wakeup(&sc->sc_thread); 1038 1039 do { 1040 s = splusb(); 1041 while (sc->sc_ur_framelen == 0) { 1042 DPRINTFN(5,("%s: calling tsleep()\n", __func__)); 1043 error = tsleep(&sc->sc_ur_framelen, PZERO | PCATCH, 1044 "usirrd", 0); 1045 if (sc->sc_dying) 1046 error = EIO; 1047 if (error) { 1048 splx(s); 1049 DPRINTFN(0, ("%s: tsleep() = %d\n", 1050 __func__, error)); 1051 goto ret; 1052 } 1053 } 1054 splx(s); 1055 1056 uframelen = sc->sc_ur_framelen; 1057 DPRINTFN(1,("%s: sc=%p framelen=%u, hdr=0x%02x\n", 1058 __func__, sc, uframelen, sc->sc_ur_buf[0])); 1059 if (uframelen > uio->uio_resid) 1060 error = EINVAL; 1061 else 1062 error = uiomove(sc->sc_ur_buf, uframelen, uio); 1063 sc->sc_ur_framelen = 0; 1064 1065 if (!deframe_rd_ur(sc) && uframelen > 0) { 1066 /* 1067 * Need to wait for another read to obtain a 1068 * complete frame... If we also obtained 1069 * actual data, wake up the possibly sleeping 1070 * thread immediately... 1071 */ 1072 wakeup(&sc->sc_thread); 1073 } 1074 } while (uframelen == 0); 1075 1076 DPRINTFN(1,("%s: return %d\n", __func__, error)); 1077 1078 ret: 1079 if (--sc->sc_refcnt < 0) 1080 usb_detach_wakeup(USBDEV(sc->sc_dev)); 1081 return error; 1082 } 1083 1084 /* ARGSUSED */ 1085 Static int 1086 ustir_write(void *h, struct uio *uio, int flag) 1087 { 1088 struct ustir_softc *sc = h; 1089 usbd_status err; 1090 u_int32_t wrlen; 1091 int error, sirlength; 1092 u_int8_t *wrbuf; 1093 int s; 1094 1095 DPRINTFN(1,("%s: sc=%p\n", __func__, sc)); 1096 1097 if (sc->sc_dying) 1098 return EIO; 1099 1100 #ifdef DIAGNOSTIC 1101 if (sc->sc_wr_buf == NULL) 1102 return EINVAL; 1103 #endif 1104 1105 wrlen = uio->uio_resid; 1106 if (wrlen > sc->sc_params.maxsize) 1107 return EINVAL; 1108 1109 sc->sc_refcnt++; 1110 1111 if (!USTIR_BLOCK_RX_DATA(sc)) { 1112 /* 1113 * If reads are not blocked, determine what action we 1114 * should potentially take... 1115 */ 1116 if (sc->sc_direction == udir_output) { 1117 /* 1118 * If the last operation was an output, wait for the 1119 * polling thread to check for incoming data. 1120 */ 1121 sc->sc_wr_stalewrite = 1; 1122 wakeup(&sc->sc_thread); 1123 } else if (!sc->sc_rd_readinprogress && 1124 (sc->sc_direction == udir_idle || 1125 sc->sc_direction == udir_input)) { 1126 /* If idle, check for input before outputting */ 1127 ustir_start_read(sc); 1128 } 1129 } 1130 1131 s = splusb(); 1132 while (sc->sc_wr_stalewrite || 1133 (sc->sc_direction != udir_output && 1134 sc->sc_direction != udir_idle)) { 1135 DPRINTFN(5, ("%s: sc=%p stalewrite=%d direction=%d, " 1136 "calling tsleep()\n", __func__, 1137 sc, sc->sc_wr_stalewrite, sc->sc_direction)); 1138 error = tsleep(&sc->sc_wr_buf, PZERO | PCATCH, 1139 "usirwr", 0); 1140 if (sc->sc_dying) 1141 error = EIO; 1142 if (error) { 1143 splx(s); 1144 DPRINTFN(0, ("%s: tsleep() = %d\n", __func__, 1145 error)); 1146 goto ret; 1147 } 1148 } 1149 splx(s); 1150 1151 wrbuf = sc->sc_wr_buf; 1152 1153 /* Build header */ 1154 wrbuf[0] = STIR_OUTPUT_HEADER_BYTE0; 1155 wrbuf[1] = STIR_OUTPUT_HEADER_BYTE1; 1156 1157 sirlength = irda_sir_frame(&wrbuf[STIR_OUTPUT_HEADER_SIZE], 1158 MAX_USTIR_OUTPUT_FRAME - 1159 STIR_OUTPUT_HEADER_SIZE, 1160 uio, sc->sc_params.ebofs); 1161 if (sirlength < 0) { 1162 error = -sirlength; 1163 } else { 1164 u_int32_t btlen; 1165 1166 DPRINTFN(1, ("%s: transfer %u bytes\n", __func__, 1167 (unsigned int)wrlen)); 1168 1169 wrbuf[2] = sirlength & 0xff; 1170 wrbuf[3] = (sirlength >> 8) & 0xff; 1171 1172 btlen = STIR_OUTPUT_HEADER_SIZE + sirlength; 1173 1174 sc->sc_direction = udir_output; 1175 1176 #ifdef USTIR_DEBUG 1177 if (ustirdebug >= 20) 1178 ustir_dumpdata(wrbuf, btlen, __func__); 1179 #endif 1180 1181 err = usbd_bulk_transfer(sc->sc_wr_xfer, sc->sc_wr_pipe, 1182 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, 1183 USTIR_WR_TIMEOUT, 1184 wrbuf, &btlen, "ustiwr"); 1185 DPRINTFN(2, ("%s: err=%d\n", __func__, err)); 1186 if (err != USBD_NORMAL_COMPLETION) { 1187 if (err == USBD_INTERRUPTED) 1188 error = EINTR; 1189 else if (err == USBD_TIMEOUT) 1190 error = ETIMEDOUT; 1191 else 1192 error = EIO; 1193 } else { 1194 error = 0; 1195 } 1196 } 1197 1198 ret: 1199 if (--sc->sc_refcnt < 0) 1200 usb_detach_wakeup(USBDEV(sc->sc_dev)); 1201 1202 DPRINTFN(1,("%s: sc=%p done\n", __func__, sc)); 1203 return error; 1204 } 1205 1206 Static int 1207 ustir_poll(void *h, int events, struct lwp *l) 1208 { 1209 struct ustir_softc *sc = h; 1210 int revents = 0; 1211 1212 DPRINTFN(1,("%s: sc=%p\n", __func__, sc)); 1213 1214 if (events & (POLLOUT | POLLWRNORM)) { 1215 if (sc->sc_direction != udir_input) { 1216 revents |= events & (POLLOUT | POLLWRNORM); 1217 } else { 1218 DPRINTFN(2,("%s: recording write select\n", 1219 __func__)); 1220 selrecord(l, &sc->sc_wr_sel); 1221 } 1222 } 1223 1224 if (events & (POLLIN | POLLRDNORM)) { 1225 if (sc->sc_ur_framelen != 0) { 1226 DPRINTFN(2,("%s: have data\n", __func__)); 1227 revents |= events & (POLLIN | POLLRDNORM); 1228 } else { 1229 DPRINTFN(2,("%s: recording read select\n", 1230 __func__)); 1231 selrecord(l, &sc->sc_rd_sel); 1232 } 1233 } 1234 1235 return revents; 1236 } 1237 1238 static void 1239 filt_ustirrdetach(struct knote *kn) 1240 { 1241 struct ustir_softc *sc = kn->kn_hook; 1242 int s; 1243 1244 s = splusb(); 1245 SLIST_REMOVE(&sc->sc_rd_sel.sel_klist, kn, knote, kn_selnext); 1246 splx(s); 1247 } 1248 1249 /* ARGSUSED */ 1250 static int 1251 filt_ustirread(struct knote *kn, long hint) 1252 { 1253 struct ustir_softc *sc = kn->kn_hook; 1254 1255 kn->kn_data = sc->sc_ur_framelen; 1256 return (kn->kn_data > 0); 1257 } 1258 1259 static void 1260 filt_ustirwdetach(struct knote *kn) 1261 { 1262 struct ustir_softc *sc = kn->kn_hook; 1263 int s; 1264 1265 s = splusb(); 1266 SLIST_REMOVE(&sc->sc_wr_sel.sel_klist, kn, knote, kn_selnext); 1267 splx(s); 1268 } 1269 1270 /* ARGSUSED */ 1271 static int 1272 filt_ustirwrite(struct knote *kn, long hint) 1273 { 1274 struct ustir_softc *sc = kn->kn_hook; 1275 1276 kn->kn_data = 0; 1277 return (sc->sc_direction != udir_input); 1278 } 1279 1280 static const struct filterops ustirread_filtops = 1281 { 1, NULL, filt_ustirrdetach, filt_ustirread }; 1282 static const struct filterops ustirwrite_filtops = 1283 { 1, NULL, filt_ustirwdetach, filt_ustirwrite }; 1284 1285 Static int 1286 ustir_kqfilter(void *h, struct knote *kn) 1287 { 1288 struct ustir_softc *sc = h; 1289 struct klist *klist; 1290 int s; 1291 1292 switch (kn->kn_filter) { 1293 case EVFILT_READ: 1294 klist = &sc->sc_rd_sel.sel_klist; 1295 kn->kn_fop = &ustirread_filtops; 1296 break; 1297 case EVFILT_WRITE: 1298 klist = &sc->sc_wr_sel.sel_klist; 1299 kn->kn_fop = &ustirwrite_filtops; 1300 break; 1301 default: 1302 return (EINVAL); 1303 } 1304 1305 kn->kn_hook = sc; 1306 1307 s = splusb(); 1308 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 1309 splx(s); 1310 1311 return (0); 1312 } 1313 1314 #ifdef USTIR_DEBUG_IOCTLS 1315 Static int ustir_ioctl(void *h, u_long cmd, void *addr, int flag, struct lwp *l) 1316 { 1317 struct ustir_softc *sc = h; 1318 int error; 1319 unsigned int regnum; 1320 usbd_status err; 1321 u_int8_t regdata; 1322 1323 if (sc->sc_dying) 1324 return EIO; 1325 1326 sc->sc_refcnt++; 1327 1328 error = 0; 1329 switch (cmd) { 1330 case USTIR_READ_REGISTER: 1331 regnum = *(unsigned int *)addr; 1332 1333 if (regnum > STIR_MAX_REG) { 1334 error = EINVAL; 1335 break; 1336 } 1337 1338 err = ustir_read_reg(sc, regnum, ®data); 1339 1340 DPRINTFN(10, ("%s: regget(%u) = 0x%x\n", __func__, 1341 regnum, (unsigned int)regdata)); 1342 1343 *(unsigned int *)addr = regdata; 1344 if (err != USBD_NORMAL_COMPLETION) { 1345 printf("%s: register read failed: %s\n", 1346 USBDEVNAME(sc->sc_dev), 1347 usbd_errstr(err)); 1348 error = EIO; 1349 } 1350 break; 1351 1352 case USTIR_WRITE_REGISTER: 1353 regnum = *(unsigned int *)addr; 1354 regdata = (regnum >> 8) & 0xff; 1355 regnum = regnum & 0xff; 1356 1357 if (regnum > STIR_MAX_REG) { 1358 error = EINVAL; 1359 break; 1360 } 1361 1362 DPRINTFN(10, ("%s: regset(%u, 0x%x)\n", __func__, 1363 regnum, (unsigned int)regdata)); 1364 1365 err = ustir_write_reg(sc, regnum, regdata); 1366 if (err != USBD_NORMAL_COMPLETION) { 1367 printf("%s: register write failed: %s\n", 1368 USBDEVNAME(sc->sc_dev), 1369 usbd_errstr(err)); 1370 error = EIO; 1371 } 1372 break; 1373 1374 case USTIR_DEBUG_LEVEL: 1375 #ifdef USTIR_DEBUG 1376 ustirdebug = *(int *)addr; 1377 #endif 1378 break; 1379 1380 case USTIR_DEBUG_OPERATION: 1381 break; 1382 1383 default: 1384 error = EINVAL; 1385 break; 1386 } 1387 1388 if (--sc->sc_refcnt < 0) 1389 usb_detach_wakeup(USBDEV(sc->sc_dev)); 1390 1391 return error; 1392 } 1393 #endif 1394 1395 Static int 1396 ustir_set_params(void *h, struct irda_params *p) 1397 { 1398 struct ustir_softc *sc = h; 1399 struct ustir_speedrec const *speedblk; 1400 int i; 1401 1402 DPRINTFN(0, ("%s: sc=%p, speed=%d ebofs=%d maxsize=%d\n", __func__, 1403 sc, p->speed, p->ebofs, p->maxsize)); 1404 1405 if (sc->sc_dying) 1406 return EIO; 1407 1408 speedblk = NULL; 1409 1410 if (sc->sc_speedrec == NULL || p->speed != sc->sc_speedrec->speed) { 1411 /* find speed */ 1412 for (i = 0; i < USTIR_NSPEEDS; i++) { 1413 if (ustir_speeds[i].speed == p->speed) { 1414 speedblk = &ustir_speeds[i]; 1415 goto found2; 1416 } 1417 } 1418 /* no good value found */ 1419 return EINVAL; 1420 found2: 1421 ; 1422 } 1423 if (p->maxsize != sc->sc_params.maxsize) { 1424 if (p->maxsize > IRDA_MAX_FRAME_SIZE) 1425 return EINVAL; 1426 sc->sc_params.maxsize = p->maxsize; 1427 } 1428 1429 sc->sc_params = *p; 1430 1431 if (speedblk != NULL) { 1432 usbd_status err; 1433 u_int8_t regmode; 1434 u_int8_t regbrate; 1435 1436 sc->sc_speedrec = speedblk; 1437 1438 regmode = STIR_BRMODE_MODEREG(speedblk->config); 1439 regbrate = STIR_BRMODE_BRATEREG(speedblk->config); 1440 1441 /* 1442 * FFSPRST must be set to enable the FIFO. 1443 */ 1444 regmode |= STIR_RMODE_FFSPRST; 1445 1446 DPRINTFN(10, ("%s: setting BRATE = %x\n", __func__, 1447 (unsigned int)regbrate)); 1448 err = ustir_write_reg(sc, STIR_REG_BRATE, regbrate); 1449 if (err == USBD_NORMAL_COMPLETION) { 1450 DPRINTFN(10, ("%s: setting MODE = %x\n", __func__, 1451 (unsigned int)regmode)); 1452 err = ustir_write_reg(sc, STIR_REG_MODE, regmode); 1453 } 1454 if (err != USBD_NORMAL_COMPLETION) { 1455 DPRINTFN(10, ("%s: error setting register: %s\n", 1456 __func__, usbd_errstr(err))); 1457 return EIO; 1458 } 1459 } 1460 1461 return 0; 1462 } 1463 1464 Static int 1465 ustir_get_speeds(void *h, int *speeds) 1466 { 1467 struct ustir_softc *sc = h; 1468 1469 DPRINTFN(0, ("%s: sc=%p\n", __func__, sc)); 1470 1471 if (sc->sc_dying) 1472 return EIO; 1473 1474 /* All these speeds are supported */ 1475 *speeds = IRDA_SPEED_4000000 | 1476 IRDA_SPEED_1152000 | 1477 IRDA_SPEED_576000 | 1478 IRDA_SPEED_115200 | 1479 IRDA_SPEED_57600 | 1480 IRDA_SPEED_38400 | 1481 IRDA_SPEED_19200 | 1482 IRDA_SPEED_9600 | 1483 IRDA_SPEED_2400; 1484 1485 return 0; 1486 } 1487 1488 Static int 1489 ustir_get_turnarounds(void *h, int *turnarounds) 1490 { 1491 struct ustir_softc *sc = h; 1492 1493 DPRINTFN(0, ("%s: sc=%p\n", __func__, sc)); 1494 1495 if (sc->sc_dying) 1496 return EIO; 1497 1498 /* 1499 * Documentation is on the light side with respect to 1500 * turnaround time for this device. 1501 */ 1502 *turnarounds = IRDA_TURNT_10000; 1503 1504 return 0; 1505 } 1506
Indexes created Thu Sep 25 16:09:42 GMT 2025