btuart.c revision 1.6
1 /* $NetBSD: btuart.c,v 1.6 2007/07/23 03:45:27 kiyohara Exp $ */ 2 /* 3 * Copyright (c) 2006, 2007 KIYOHARA Takashi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: btuart.c,v 1.6 2007/07/23 03:45:27 kiyohara Exp $"); 30 31 #include <sys/types.h> 32 #include <sys/param.h> 33 #include <sys/device.h> 34 #include <sys/errno.h> 35 36 #include <sys/conf.h> 37 #include <sys/fcntl.h> 38 #include <sys/kauth.h> 39 #include <sys/kernel.h> 40 #include <sys/malloc.h> 41 #include <sys/mbuf.h> 42 #include <sys/proc.h> 43 #include <sys/syslimits.h> 44 #include <sys/systm.h> 45 #include <sys/tty.h> 46 47 #include <machine/bus.h> 48 #include <machine/intr.h> 49 50 #include <netbt/bluetooth.h> 51 #include <netbt/hci.h> 52 53 #include <dev/bluetooth/btuart.h> 54 #include <dev/firmload.h> 55 56 #include "ioconf.h" 57 58 #define BTUART_DEBUG 59 #ifdef BTUART_DEBUG 60 int btuart_debug = 1; 61 #endif 62 63 struct btuart_softc; 64 struct bth4hci { 65 int type; 66 int init_baud; 67 #define FLOW_CTL 1 68 int flags; 69 int (*init)(struct btuart_softc *); 70 }; 71 72 struct btuart_softc { 73 struct device sc_dev; 74 75 struct tty *sc_tp; 76 struct hci_unit sc_unit; /* Bluetooth HCI Unit */ 77 78 struct bth4hci sc_bth4hci; 79 int sc_baud; 80 81 int sc_state; /* receive state */ 82 #define BTUART_RECV_PKT_TYPE 0 /* packet type */ 83 #define BTUART_RECV_ACL_HDR 1 /* acl header */ 84 #define BTUART_RECV_SCO_HDR 2 /* sco header */ 85 #define BTUART_RECV_EVENT_HDR 3 /* event header */ 86 #define BTUART_RECV_ACL_DATA 4 /* acl packet data */ 87 #define BTUART_RECV_SCO_DATA 5 /* sco packet data */ 88 #define BTUART_RECV_EVENT_DATA 6 /* event packet data */ 89 int sc_want; /* how much we want */ 90 struct mbuf *sc_rxp; /* incoming packet */ 91 struct mbuf *sc_txp; /* outgoing packet */ 92 93 void (*sc_input_acl)(struct hci_unit *, struct mbuf *); 94 void (*sc_input_sco)(struct hci_unit *, struct mbuf *); 95 void (*sc_input_event)(struct hci_unit *, struct mbuf *); 96 }; 97 98 void btuartattach(int); 99 static int btuart_match(struct device *, struct cfdata *, void *); 100 static void btuart_attach(struct device *, struct device *, void *); 101 static int btuart_detach(struct device *, int); 102 103 static int bth4_waitresp(struct btuart_softc *, struct mbuf **, uint16_t); 104 static int bth4_firmload(struct btuart_softc *, char *, 105 int (*)(struct btuart_softc *, int, char *)); 106 static int init_ericsson(struct btuart_softc *); 107 static int init_digi(struct btuart_softc *); 108 static int init_texas(struct btuart_softc *); 109 static int init_csr(struct btuart_softc *); 110 static int init_swave(struct btuart_softc *); 111 static int init_st(struct btuart_softc *); 112 static int firmload_stlc2500(struct btuart_softc *, int, char *); 113 static int init_stlc2500(struct btuart_softc *); 114 static int init_bcm2035(struct btuart_softc *); 115 static int bth4init(struct btuart_softc *); 116 static void bth4init_input(struct hci_unit *, struct mbuf *); 117 118 static int bth4open(dev_t, struct tty *); 119 static int bth4close(struct tty *, int); 120 static int bth4ioctl(struct tty *, u_long, void *, int, struct lwp *); 121 static int bth4input(int, struct tty *); 122 static int bth4start(struct tty *); 123 124 static int bth4_enable(struct hci_unit *); 125 static void bth4_disable(struct hci_unit *); 126 static void bth4_start(struct hci_unit *); 127 128 /* 129 * It doesn't need to be exported, as only btuartattach() uses it, 130 * but there's no "official" way to make it static. 131 */ 132 CFATTACH_DECL(btuart, sizeof(struct btuart_softc), 133 btuart_match, btuart_attach, btuart_detach, NULL); 134 135 static struct linesw bth4_disc = { 136 .l_name = "btuart", 137 .l_open = bth4open, 138 .l_close = bth4close, 139 .l_read = ttyerrio, 140 .l_write = ttyerrio, 141 .l_ioctl = bth4ioctl, 142 .l_rint = bth4input, 143 .l_start = bth4start, 144 .l_modem = ttymodem, 145 .l_poll = ttyerrpoll 146 }; 147 148 static struct bth4hci bth4hci[] = { 149 { BTUART_HCITYPE_ANY, B0, FLOW_CTL, NULL }, 150 { BTUART_HCITYPE_ERICSSON, B57600, FLOW_CTL, init_ericsson }, 151 { BTUART_HCITYPE_DIGI, B9600, FLOW_CTL, init_digi }, 152 { BTUART_HCITYPE_TEXAS, B115200, FLOW_CTL, init_texas }, 153 /* CSR Casira serial adapter or BrainBoxes serial dongle (BL642) */ 154 { BTUART_HCITYPE_CSR, B115200, FLOW_CTL, init_csr }, 155 /* Silicon Wave kits */ 156 { BTUART_HCITYPE_SWAVE, B115200, FLOW_CTL, init_swave }, 157 /* ST Microelectronics minikits based on STLC2410/STLC2415 */ 158 { BTUART_HCITYPE_ST, B57600, FLOW_CTL, init_st }, 159 /* ST Microelectronics minikits based on STLC2500 */ 160 { BTUART_HCITYPE_STLC2500, B115200, FLOW_CTL, init_stlc2500 }, 161 /* AmbiCom BT2000C Bluetooth PC/CF Card */ 162 { BTUART_HCITYPE_BT2000C, B57600, FLOW_CTL, init_csr }, 163 /* Broadcom BCM2035 */ 164 { BTUART_HCITYPE_BCM2035, B115200, 0, init_bcm2035 }, 165 166 { -1, B0, 0, NULL } 167 }; 168 169 170 /* ARGSUSED */ 171 void 172 btuartattach(int num __unused) 173 { 174 int error; 175 176 error = ttyldisc_attach(&bth4_disc); 177 if (error) { 178 aprint_error("%s: unable to register line discipline, " 179 "error = %d\n", btuart_cd.cd_name, error); 180 return; 181 } 182 183 error = config_cfattach_attach(btuart_cd.cd_name, &btuart_ca); 184 if (error) { 185 aprint_error("%s: unable to register cfattach, error = %d\n", 186 btuart_cd.cd_name, error); 187 config_cfdriver_detach(&btuart_cd); 188 (void) ttyldisc_detach(&bth4_disc); 189 } 190 } 191 192 /* 193 * Autoconf match routine. 194 * 195 * XXX: unused: config_attach_pseudo(9) does not call ca_match. 196 */ 197 /* ARGSUSED */ 198 static int 199 btuart_match(struct device *self __unused, 200 struct cfdata *cfdata __unused, void *arg __unused) 201 { 202 203 /* pseudo-device; always present */ 204 return 1; 205 } 206 207 /* 208 * Autoconf attach routine. Called by config_attach_pseudo(9) when we 209 * open the line discipline. 210 */ 211 /* ARGSUSED */ 212 static void 213 btuart_attach(struct device *parent __unused, 214 struct device *self, void *aux __unused) 215 { 216 struct btuart_softc *sc = device_private(self); 217 int i; 218 219 aprint_normal("\n"); 220 aprint_naive("\n"); 221 222 sc->sc_input_acl = bth4init_input; 223 sc->sc_input_sco = bth4init_input; 224 sc->sc_input_event = bth4init_input; 225 226 /* Copy default type */ 227 for (i = 0; bth4hci[i].type != BTUART_HCITYPE_ANY; i++); 228 memcpy(&sc->sc_bth4hci, &bth4hci[i], sizeof(struct bth4hci)); 229 230 /* Attach Bluetooth unit */ 231 sc->sc_unit.hci_softc = sc; 232 sc->sc_unit.hci_devname = sc->sc_dev.dv_xname; 233 sc->sc_unit.hci_enable = bth4_enable; 234 sc->sc_unit.hci_disable = bth4_disable; 235 sc->sc_unit.hci_start_cmd = bth4_start; 236 sc->sc_unit.hci_start_acl = bth4_start; 237 sc->sc_unit.hci_start_sco = bth4_start; 238 sc->sc_unit.hci_ipl = makeiplcookie(IPL_TTY); 239 hci_attach(&sc->sc_unit); 240 } 241 242 /* 243 * Autoconf detach routine. Called when we close the line discipline. 244 */ 245 static int 246 btuart_detach(struct device *self, int flags __unused) 247 { 248 struct btuart_softc *sc = device_private(self); 249 250 hci_detach(&sc->sc_unit); 251 252 return 0; 253 } 254 255 256 static int 257 bth4_waitresp(struct btuart_softc *sc, struct mbuf **mp, uint16_t opcode) 258 { 259 struct hci_unit *unit = &sc->sc_unit; 260 hci_event_hdr_t *e; 261 int status = 0, rv; 262 263 *mp = NULL; 264 while (1 /* CONSTCOND */) { 265 if ((rv = 266 tsleep(&unit->hci_eventq, PCATCH, "bth4init", 0)) != 0) 267 return rv; 268 269 MBUFQ_DEQUEUE(&unit->hci_eventq, *mp); 270 unit->hci_eventqlen--; 271 KASSERT(*mp != NULL); 272 273 e = mtod(*mp, hci_event_hdr_t *); 274 if (e->event == HCI_EVENT_COMMAND_COMPL) { 275 hci_command_compl_ep *ep; 276 277 ep = (hci_command_compl_ep *)(e + 1); 278 if (ep->opcode == opcode) { 279 status = *(char *)(ep + 1); 280 break; 281 } 282 } else if (e->event == HCI_EVENT_COMMAND_STATUS) { 283 hci_command_status_ep *ep; 284 285 ep = (hci_command_status_ep *)(e + 1); 286 if (ep->opcode == opcode) { 287 status = ep->status; 288 break; 289 } 290 } else if (e->event == HCI_EVENT_VENDOR) 291 break; 292 } 293 294 return status; 295 } 296 297 static int 298 bth4_firmload(struct btuart_softc *sc, char *filename, 299 int (*func_firmload)(struct btuart_softc *, int, char *)) 300 { 301 const cfdriver_t cd = device_cfdriver(&sc->sc_dev); 302 firmware_handle_t fh = NULL; 303 int error, size; 304 char *buf; 305 306 if ((error = firmware_open(cd->cd_name, filename, &fh)) != 0) { 307 printf("firmware_open failed\n"); 308 return error; 309 } 310 size = firmware_get_size(fh); 311 if ((buf = firmware_malloc(size)) != NULL) { 312 printf("firmware_malloc failed\n"); 313 firmware_close(fh); 314 return ENOMEM; 315 } 316 317 if ((error = firmware_read(fh, 0, buf, size)) != 0) 318 printf("firmware_read failed\n"); 319 if (error == 0) 320 error = (*func_firmload)(sc, size, buf); 321 322 firmware_close(fh); 323 firmware_free(buf, size); 324 325 return error; 326 } 327 328 /* 329 * LSI initialize functions. 330 */ 331 static int 332 init_ericsson(struct btuart_softc *sc) 333 { 334 struct mbuf *m; 335 struct hci_unit *unit = &sc->sc_unit; 336 hci_cmd_hdr_t *p; 337 int i, error = 0; 338 const uint16_t opcode = htole16(HCI_CMD_ERICSSON_SET_UART_BAUD_RATE); 339 static struct { 340 int baud; 341 uint8_t param; 342 } ericsson_baudtbl[] = { 343 { B460800, 0x00 }, 344 { B230400, 0x01 }, 345 { B115200, 0x02 }, 346 { B57600, 0x03 }, 347 { B28800, 0x04 }, 348 { B14400, 0x05 }, 349 { B7200, 0x06 }, 350 #if defined(B3600) 351 { B3600, 0x07 }, 352 #endif 353 { B1800, 0x08 }, 354 #if defined(B900) 355 { B900, 0x09 }, 356 #endif 357 #if defined(B153600) 358 { B153600, 0x10 }, 359 #endif 360 { B76800, 0x11 }, 361 { B38400, 0x12 }, 362 { B19200, 0x13 }, 363 { B9600, 0x14 }, 364 { B4800, 0x15 }, 365 { B2400, 0x16 }, 366 { B1200, 0x17 }, 367 { B600, 0x18 }, 368 { B300, 0x19 }, 369 { B921600, 0x20 }, 370 { B0, 0xff } 371 }; 372 373 for (i = 0; ericsson_baudtbl[i].baud != sc->sc_baud; i++) 374 if (ericsson_baudtbl[i].baud == B0) 375 return EINVAL; 376 377 m = m_gethdr(M_WAIT, MT_DATA); 378 if (m == NULL) 379 return ENOMEM; 380 381 p = mtod(m, hci_cmd_hdr_t *); 382 p->type = HCI_CMD_PKT; 383 p->opcode = opcode; 384 p->length = sizeof(ericsson_baudtbl[0].param); 385 m->m_pkthdr.len = m->m_len = sizeof(hci_cmd_hdr_t); 386 m_copyback(m, sizeof(hci_cmd_hdr_t), p->length, 387 &ericsson_baudtbl[i].param); 388 389 MBUFQ_ENQUEUE(&unit->hci_cmdq, m); 390 bth4_start(unit); 391 392 #if 0 393 error = bth4_waitresp(sc, &m, opcode); 394 if (m != NULL) { 395 if (error != 0) { 396 printf("%s: Ericsson_Set_UART_Baud_Rate failed:" 397 " Status 0x%02x\n", sc->sc_dev.dv_xname, error); 398 error = EFAULT; 399 } 400 m_freem(m); 401 } 402 #else 403 /* 404 * XXXX: We cannot correctly receive this response perhaps. Wait 405 * until the transmission of the data of 5 bytes * 10 bit is completed. 406 * 1000000usec * 10bit * 5byte / baud 407 */ 408 delay(50000000 / sc->sc_bth4hci.init_baud); 409 #endif 410 return error; 411 } 412 413 static int 414 init_digi(struct btuart_softc *sc) 415 { 416 struct mbuf *m; 417 struct hci_unit *unit = &sc->sc_unit; 418 hci_cmd_hdr_t *p; 419 uint8_t param; 420 421 /* XXXX */ 422 switch (sc->sc_baud) { 423 case B57600: 424 param = 0x08; 425 break; 426 427 case B115200: 428 param = 0x09; 429 break; 430 431 default: 432 return EINVAL; 433 } 434 435 m = m_gethdr(M_WAIT, MT_DATA); 436 if (m == NULL) 437 return ENOMEM; 438 439 p = mtod(m, hci_cmd_hdr_t *); 440 p->type = HCI_CMD_PKT; 441 #define HCI_CMD_DIGIANSWER_SET_UART_BAUD_RATE 0xfc07 /* XXXX */ 442 p->opcode = htole16(HCI_CMD_DIGIANSWER_SET_UART_BAUD_RATE); 443 p->length = sizeof(param); 444 m->m_pkthdr.len = m->m_len = sizeof(hci_cmd_hdr_t); 445 m_copyback(m, sizeof(hci_cmd_hdr_t), p->length, ¶m); 446 447 MBUFQ_ENQUEUE(&unit->hci_cmdq, m); 448 bth4_start(unit); 449 450 /* 451 * XXXX 452 * Wait until the transmission of the data of 5 bytes * 10 bit is 453 * completed. 454 * 1000000usec * 10bit * 5byte / baud 455 */ 456 delay(50000000 / sc->sc_bth4hci.init_baud); 457 return 0; 458 } 459 460 static int 461 init_texas(struct btuart_softc *sc) 462 { 463 464 /* XXXX: Should we obtain the version of LMP? */ 465 return 0; 466 } 467 468 static int 469 init_csr(struct btuart_softc *sc) 470 { 471 struct mbuf *m; 472 struct hci_unit *unit = &sc->sc_unit; 473 hci_cmd_hdr_t *p; 474 int error; 475 const uint16_t opcode = htole16(HCI_CMD_CSR_EXTN); 476 struct { 477 uint8_t last :1; 478 uint8_t first :1; 479 #define CSR_BCCMD_CHANID_BCCMD 2 480 #define CSR_BCCMD_CHANID_HQ 3 481 #define CSR_BCCMD_CHANID_DEVMGRLIB 4 482 #define CSR_BCCMD_CHANID_L2CAPLIB 8 483 #define CSR_BCCMD_CHANID_RFCOMMLIB 9 484 #define CSR_BCCMD_CHANID_SDPLIB 10 485 #define CSR_BCCMD_CHANID_DFU 12 486 #define CSR_BCCMD_CHANID_VM 13 487 #define CSR_BCCMD_CHANID_LMDEBUG 20 488 uint8_t chanid :6; 489 490 struct { 491 #define CSR_BCCMD_MESSAGE_TYPE_GETREQ 0x0000 492 #define CSR_BCCMD_MESSAGE_TYPE_GETRESP 0x0001 493 #define CSR_BCCMD_MESSAGE_TYPE_SETREQ 0x0002 494 uint16_t type; 495 uint16_t length; 496 uint16_t seqno; 497 #define CSR_BCCMD_MESSAGE_VARID_CONFIG_UART 0x6802 498 #define CSR_BCCMD_MESSAGE_VARID_CONFIG_UART_STOPB 0x2000 499 #define CSR_BCCMD_MESSAGE_VARID_CONFIG_UART_PARENB 0x4000 500 #define CSR_BCCMD_MESSAGE_VARID_CONFIG_UART_PARODD 0x8000 501 uint16_t varid; 502 #define CSR_BCCMD_MESSAGE_STATUS_OK 0x0000 503 #define CSR_BCCMD_MESSAGE_STATUS_NO_SUCH_VARID 0x0001 504 #define CSR_BCCMD_MESSAGE_STATUS_TOO_BIG 0x0002 505 #define CSR_BCCMD_MESSAGE_STATUS_NO_VALUE 0x0003 506 #define CSR_BCCMD_MESSAGE_STATUS_BAD_REQ 0x0004 507 #define CSR_BCCMD_MESSAGE_STATUS_NO_ACCESS 0x0005 508 #define CSR_BCCMD_MESSAGE_STATUS_READ_ONLY 0x0006 509 #define CSR_BCCMD_MESSAGE_STATUS_WRITE_ONLY 0x0007 510 #define CSR_BCCMD_MESSAGE_STATUS_ERROR 0x0008 511 #define CSR_BCCMD_MESSAGE_STATUS_PERMISION_DENIED 0x0009 512 uint16_t status; 513 uint16_t payload[4]; 514 } message; 515 } bccmd; 516 517 m = m_gethdr(M_WAIT, MT_DATA); 518 if (m == NULL) 519 return ENOMEM; 520 521 p = mtod(m, hci_cmd_hdr_t *); 522 p->type = HCI_CMD_PKT; 523 p->opcode = opcode; 524 p->length = sizeof(bccmd); 525 m->m_pkthdr.len = m->m_len = sizeof(hci_cmd_hdr_t); 526 527 /* setup BCSP command packet */ 528 bccmd.last = 1; 529 bccmd.first = 1; 530 bccmd.chanid = CSR_BCCMD_CHANID_BCCMD; 531 bccmd.message.type = htole16(CSR_BCCMD_MESSAGE_TYPE_SETREQ); 532 bccmd.message.length = htole16(sizeof(bccmd.message) >> 1); 533 bccmd.message.seqno = htole16(0); 534 bccmd.message.varid = htole16(CSR_BCCMD_MESSAGE_VARID_CONFIG_UART); 535 bccmd.message.status = htole16(CSR_BCCMD_MESSAGE_STATUS_OK); 536 memset(bccmd.message.payload, 0, sizeof(bccmd.message.payload)); 537 538 /* Value = (baud rate / 244.140625) | no parity | 1 stop bit. */ 539 bccmd.message.payload[0] = htole16((sc->sc_baud * 64 + 7812) / 15625); 540 541 m_copyback(m, sizeof(hci_cmd_hdr_t), p->length, &bccmd); 542 MBUFQ_ENQUEUE(&unit->hci_cmdq, m); 543 bth4_start(unit); 544 545 error = bth4_waitresp(sc, &m, opcode); 546 if (m != NULL) { 547 /* 548 * XXXX: 549 * We will have to check the HCI_EVENT_VENDOR packet. For 550 * instance, it might be a different HCI_EVENT_VENDOR packet. 551 */ 552 if (error != 0) { 553 printf("%s: CSR set UART speed failed: Status 0x%02x\n", 554 sc->sc_dev.dv_xname, error); 555 error = EFAULT; 556 } 557 m_freem(m); 558 } 559 560 return error; 561 } 562 563 static int 564 init_swave(struct btuart_softc *sc) 565 { 566 struct mbuf *m; 567 struct hci_unit *unit = &sc->sc_unit; 568 hci_cmd_hdr_t *p; 569 hci_event_hdr_t *e; 570 int i, error; 571 #define HCI_CMD_SWAVE_SET_UART_BAUD_RATE 0xfc0b /* XXXX */ 572 const uint16_t opcode = htole16(HCI_CMD_SWAVE_SET_UART_BAUD_RATE); 573 char param[6], *resp; 574 static struct { /* XXXX */ 575 int baud; 576 uint8_t param; 577 } swave_baudtbl[] = { 578 { B19200, 0x03 }, 579 { B38400, 0x02 }, 580 { B57600, 0x01 }, 581 { B115200, 0x00 }, 582 { B0, 0xff } 583 }; 584 585 for (i = 0; swave_baudtbl[i].baud != sc->sc_baud; i++) 586 if (swave_baudtbl[i].baud == B0) 587 return EINVAL; 588 589 m = m_gethdr(M_WAIT, MT_DATA); 590 if (m == NULL) 591 return ENOMEM; 592 593 /* first send 'param access set' command. */ 594 p = mtod(m, hci_cmd_hdr_t *); 595 p->type = HCI_CMD_PKT; 596 p->opcode = opcode; 597 p->length = sizeof(param); 598 m->m_pkthdr.len = m->m_len = sizeof(hci_cmd_hdr_t); 599 600 /* XXXX */ 601 param[0] = 0x01; /* param sub command */ 602 param[1] = 0x11; /* HCI Tranport Params */ 603 param[2] = 0x03; /* length of the parameter following */ 604 param[3] = 0x01; /* HCI Transport flow control enable */ 605 param[4] = 0x01; /* HCI Transport Type = UART */ 606 param[5] = swave_baudtbl[i].param; 607 m_copyback(m, sizeof(hci_cmd_hdr_t), p->length, ¶m); 608 609 MBUFQ_ENQUEUE(&unit->hci_cmdq, m); 610 bth4_start(unit); 611 612 while(1 /* CONSTCOND */) { 613 error = bth4_waitresp(sc, &m, opcode); 614 if (error != 0) { 615 if (m != NULL) 616 m_freem(m); 617 printf("%s: swave set baud rate command failed:" 618 " error 0x%02x\n", sc->sc_dev.dv_xname, error); 619 return error; 620 } 621 if (m != NULL) { 622 e = mtod(m, hci_event_hdr_t *); 623 resp = (char *)(e + 1); 624 if (e->length == 7 && *resp == 0xb && 625 memcmp(resp + 1, param, sizeof(param)) == 0) 626 break; 627 m_freem(m); 628 } 629 } 630 631 /* send 'reset' command consecutively. */ 632 p = mtod(m, hci_cmd_hdr_t *); 633 p->type = HCI_CMD_PKT; 634 p->opcode = htole16(HCI_CMD_RESET); 635 p->length = 0; 636 m->m_pkthdr.len = m->m_len = sizeof(hci_cmd_hdr_t); 637 638 /* 639 * XXXX 640 * Wait until the transmission of the data of 4 bytes * 10 bit is 641 * completed. 642 * 1000000usec * 10bit * 4byte / baud 643 */ 644 delay(40000000 / sc->sc_bth4hci.init_baud); 645 return 0; 646 } 647 648 static int 649 init_st(struct btuart_softc *sc) 650 { 651 struct mbuf *m; 652 struct hci_unit *unit = &sc->sc_unit; 653 hci_cmd_hdr_t *p; 654 int i; 655 static struct { /* XXXX */ 656 int baud; 657 uint8_t param; 658 } st_baudtbl[] = { 659 { B9600, 0x09 }, 660 { B19200, 0x0b }, 661 { B38400, 0x0d }, 662 { B57600, 0x0e }, 663 { B115200, 0x10 }, 664 { B230400, 0x12 }, 665 { B460800, 0x13 }, 666 { B921600, 0x14 }, 667 { B0, 0xff } 668 }; 669 670 for (i = 0; st_baudtbl[i].baud != sc->sc_baud; i++) 671 if (st_baudtbl[i].baud == B0) 672 return EINVAL; 673 674 m = m_gethdr(M_WAIT, MT_DATA); 675 if (m == NULL) 676 return ENOMEM; 677 678 p = mtod(m, hci_cmd_hdr_t *); 679 p->type = HCI_CMD_PKT; 680 #define HCI_CMD_ST_SET_UART_BAUD_RATE 0xfc46 /* XXXX */ 681 p->opcode = htole16(HCI_CMD_ST_SET_UART_BAUD_RATE); 682 p->length = sizeof(st_baudtbl[0].param); 683 m->m_pkthdr.len = m->m_len = sizeof(hci_cmd_hdr_t); 684 m_copyback(m, sizeof(hci_cmd_hdr_t), p->length, &st_baudtbl[i].param); 685 686 MBUFQ_ENQUEUE(&unit->hci_cmdq, m); 687 bth4_start(unit); 688 689 /* 690 * XXXX 691 * Wait until the transmission of the data of 5 bytes * 10 bit is 692 * completed. 693 * 1000000usec * 10bit * 5byte / baud 694 */ 695 delay(50000000 / sc->sc_bth4hci.init_baud); 696 return 0; 697 } 698 699 static int 700 firmload_stlc2500(struct btuart_softc *sc, int size, char *buf) 701 { 702 struct hci_unit *unit = &sc->sc_unit; 703 struct mbuf *m; 704 hci_cmd_hdr_t *p; 705 int error, offset, n; 706 uint16_t opcode = htole16(0xfc2e); /* XXXX */ 707 uint8_t seq; 708 709 m = m_gethdr(M_WAIT, MT_DATA); 710 if (m == NULL) 711 return ENOMEM; 712 seq = 0; 713 offset = 0; 714 error = 0; 715 while (offset < size) { 716 n = size - offset < 254 ? size - offset : 254; 717 718 p = mtod(m, hci_cmd_hdr_t *); 719 p->type = HCI_CMD_PKT; 720 p->opcode = opcode; 721 p->length = n; 722 m->m_pkthdr.len = m->m_len = sizeof(hci_cmd_hdr_t); 723 *(char *)(p + 1) = seq; 724 m_copyback(m, 725 sizeof(hci_cmd_hdr_t) + 1, p->length, buf + offset); 726 727 MBUFQ_ENQUEUE(&unit->hci_cmdq, m); 728 bth4_start(unit); 729 730 error = bth4_waitresp(sc, &m, opcode); 731 if (m != NULL) { 732 if (error != 0) { 733 printf("%s: stlc2500 firmware load failed:" 734 " Status 0x%02x\n", 735 sc->sc_dev.dv_xname, error); 736 error = EFAULT; 737 break; 738 } 739 } 740 741 seq++; 742 offset += n; 743 } 744 m_freem(m); 745 746 return error; 747 } 748 749 static int 750 init_stlc2500(struct btuart_softc *sc) 751 { 752 struct mbuf *m; 753 struct hci_unit *unit = &sc->sc_unit; 754 hci_cmd_hdr_t *p; 755 hci_event_hdr_t *e; 756 hci_read_local_ver_rp *lv; 757 int error, revision, i; 758 uint16_t opcode; 759 char filename[NAME_MAX], param[8]; 760 static const char filenametmpl[] = "STLC2500_R%d_%02d%s"; 761 const char *suffix[] = { ".ptc", ".ssf", NULL }; 762 763 m = m_gethdr(M_WAIT, MT_DATA); 764 if (m == NULL) 765 return ENOMEM; 766 767 p = mtod(m, hci_cmd_hdr_t *); 768 opcode = htole16(HCI_CMD_READ_LOCAL_VER); 769 p->type = HCI_CMD_PKT; 770 p->opcode = opcode; 771 p->length = 0; 772 m->m_pkthdr.len = m->m_len = sizeof(hci_cmd_hdr_t); 773 774 MBUFQ_ENQUEUE(&unit->hci_cmdq, m); 775 bth4_start(unit); 776 777 error = bth4_waitresp(sc, &m, opcode); 778 if (m != NULL) { 779 if (error != 0) { 780 printf("%s: HCI_Read_Local_Version_Information failed:" 781 " Status 0x%02x\n", sc->sc_dev.dv_xname, error); 782 error = EFAULT; 783 m_freem(m); 784 } 785 } 786 if (error != 0) 787 return error; 788 789 e = mtod(m, hci_event_hdr_t *); 790 lv = (hci_read_local_ver_rp *)(e + 1); 791 revision = le16toh(lv->hci_revision); 792 opcode = htole16(HCI_CMD_RESET); 793 for (i = 0; suffix[i] != NULL; i++) { 794 /* send firmware */ 795 snprintf(filename, sizeof(filename), filenametmpl, 796 (uint8_t)(revision >> 8), (uint8_t)revision, suffix[i]); 797 bth4_firmload(sc, filename, firmload_stlc2500); 798 799 p = mtod(m, hci_cmd_hdr_t *); 800 p->type = HCI_CMD_PKT; 801 p->opcode = opcode; 802 p->length = 0; 803 m->m_pkthdr.len = m->m_len = sizeof(hci_cmd_hdr_t); 804 805 MBUFQ_ENQUEUE(&unit->hci_cmdq, m); 806 bth4_start(unit); 807 808 error = bth4_waitresp(sc, &m, opcode); 809 if (m != NULL) { 810 if (error != 0) { 811 printf("%s: HCI_Reset (%d) failed:" 812 " Status 0x%02x\n", 813 sc->sc_dev.dv_xname, i, error); 814 error = EFAULT; 815 m_freem(m); 816 } 817 } 818 if (error != 0) 819 return error; 820 } 821 822 /* XXXX: We will obtain the character string. But I don't know... */ 823 p = mtod(m, hci_cmd_hdr_t *); 824 opcode = htole16(0xfc0f); /* XXXXX ?? */ 825 p->type = HCI_CMD_PKT; 826 p->opcode = opcode; 827 p->length = 0; 828 m->m_pkthdr.len = m->m_len = sizeof(hci_cmd_hdr_t); 829 830 MBUFQ_ENQUEUE(&unit->hci_cmdq, m); 831 bth4_start(unit); 832 833 error = bth4_waitresp(sc, &m, opcode); 834 if (m != NULL) { 835 if (error != 0) { 836 printf("%s: failed: opcode 0xfc0f Status 0x%02x\n", 837 sc->sc_dev.dv_xname, error); 838 error = EFAULT; 839 m_freem(m); 840 } 841 } 842 if (error != 0) 843 return error; 844 /* 845 * XXXX: 846 * We do not know the beginning point of this character string. 847 * Because it doesn't know the event of this packet. 848 * 849 * printf("%s: %s\n", sc->sc_dev.dv_xname, ???); 850 */ 851 852 p = mtod(m, hci_cmd_hdr_t *); 853 opcode = htole16(0xfc22); /* XXXXX ?? */ 854 p->type = HCI_CMD_PKT; 855 p->opcode = opcode; 856 p->length = sizeof(param); 857 m->m_pkthdr.len = m->m_len = sizeof(hci_cmd_hdr_t); 858 859 /* XXXX */ 860 param[0] = 0xfe; 861 param[1] = 0x06; 862 param[2] = 0xba; 863 param[3] = 0xab; 864 param[4] = 0x00; 865 param[5] = 0xe1; 866 param[6] = 0x80; 867 param[7] = 0x00; 868 m_copyback(m, sizeof(hci_cmd_hdr_t), p->length, param); 869 870 MBUFQ_ENQUEUE(&unit->hci_cmdq, m); 871 bth4_start(unit); 872 873 error = bth4_waitresp(sc, &m, opcode); 874 if (m != NULL) { 875 if (error != 0) { 876 printf("%s: failed: opcode 0xfc0f Status 0x%02x\n", 877 sc->sc_dev.dv_xname, error); 878 error = EFAULT; 879 m_freem(m); 880 } 881 } 882 if (error != 0) 883 return error; 884 885 opcode = htole16(HCI_CMD_RESET); 886 p = mtod(m, hci_cmd_hdr_t *); 887 p->type = HCI_CMD_PKT; 888 p->opcode = opcode; 889 p->length = 0; 890 m->m_pkthdr.len = m->m_len = sizeof(hci_cmd_hdr_t); 891 892 MBUFQ_ENQUEUE(&unit->hci_cmdq, m); 893 bth4_start(unit); 894 895 error = bth4_waitresp(sc, &m, opcode); 896 if (m != NULL) { 897 if (error != 0) { 898 printf("%s: HCI_Reset failed: Status 0x%02x\n", 899 sc->sc_dev.dv_xname, error); 900 error = EFAULT; 901 m_freem(m); 902 } 903 } 904 905 return error; 906 } 907 908 static int 909 init_bcm2035(struct btuart_softc *sc) 910 { 911 struct mbuf *m; 912 struct hci_unit *unit = &sc->sc_unit; 913 hci_cmd_hdr_t *p; 914 int i, error; 915 #define HCI_CMD_BCM2035_SET_UART_BAUD_RATE 0xfc18 /* XXXX */ 916 const uint16_t opcode = htole16(HCI_CMD_BCM2035_SET_UART_BAUD_RATE); 917 static struct { /* XXXX */ 918 int baud; 919 uint16_t param; 920 } bcm2035_baudtbl[] = { 921 { B57600, 0xe600 }, 922 { B230400, 0xfa22 }, 923 { B460800, 0xfd11 }, 924 { B921600, 0xff65 }, 925 { B0, 0xffff } 926 }; 927 928 for (i = 0; bcm2035_baudtbl[i].baud != sc->sc_baud; i++) 929 if (bcm2035_baudtbl[i].baud == -1) 930 return EINVAL; 931 932 m = m_gethdr(M_WAIT, MT_DATA); 933 if (m == NULL) 934 return ENOMEM; 935 936 /* 937 * XXXX: Should we send some commands? 938 * HCI_CMD_RESET and HCI_CMD_READ_LOCAL_VER and 939 * HCI_CMD_READ_LOCAL_COMMANDS 940 */ 941 942 p = mtod(m, hci_cmd_hdr_t *); 943 p->type = HCI_CMD_PKT; 944 p->opcode = opcode; 945 p->length = sizeof(bcm2035_baudtbl[0].param); 946 m->m_pkthdr.len = m->m_len = sizeof(hci_cmd_hdr_t); 947 m_copyback(m, sizeof(hci_cmd_hdr_t), p->length, 948 &bcm2035_baudtbl[i].param); 949 950 MBUFQ_ENQUEUE(&unit->hci_cmdq, m); 951 bth4_start(unit); 952 953 error = bth4_waitresp(sc, &m, opcode); 954 if (m != NULL) { 955 if (error != 0) { 956 printf("%s: bcm2035 set baud rate failed:" 957 " Status 0x%02x\n", sc->sc_dev.dv_xname, error); 958 error = EFAULT; 959 } 960 m_freem(m); 961 } 962 963 return error; 964 } 965 966 static int 967 bth4init(struct btuart_softc *sc) 968 { 969 struct tty *tp = sc->sc_tp; 970 struct termios t; 971 int error = 0, s; 972 973 sc->sc_baud = tp->t_ospeed; 974 t.c_cflag = tp->t_cflag; 975 t.c_ispeed = 0; 976 t.c_ospeed = tp->t_ospeed; 977 if ((tp->t_cflag & CRTSCTS) && !(sc->sc_bth4hci.flags & FLOW_CTL)) 978 t.c_cflag &= ~CRTSCTS; 979 if (sc->sc_bth4hci.init_baud != 0 && 980 tp->t_ospeed != sc->sc_bth4hci.init_baud) 981 t.c_ospeed = sc->sc_bth4hci.init_baud; 982 if (t.c_ospeed != tp->t_ospeed || t.c_cflag != tp->t_cflag) 983 error = (*tp->t_param)(tp, &t); 984 985 if (error == 0 && sc->sc_bth4hci.init != NULL) 986 error = (*sc->sc_bth4hci.init)(sc); 987 988 s = splserial(); 989 sc->sc_input_acl = hci_input_acl; 990 sc->sc_input_sco = hci_input_sco; 991 sc->sc_input_event = hci_input_event; 992 splx(s); 993 994 if (sc->sc_bth4hci.init_baud != 0 && 995 sc->sc_bth4hci.init_baud != sc->sc_baud) { 996 t.c_ospeed = sc->sc_baud; 997 t.c_cflag = tp->t_cflag; 998 error = (*tp->t_param)(tp, &t); 999 } 1000 1001 return error; 1002 } 1003 1004 static void 1005 bth4init_input(struct hci_unit *unit, struct mbuf *m) 1006 { 1007 int i; 1008 uint8_t *rptr = mtod(m, uint8_t *); 1009 const char *pktstr = NULL; 1010 1011 switch (*rptr) { 1012 case HCI_ACL_DATA_PKT: 1013 pktstr = "acl data"; 1014 break; 1015 1016 case HCI_SCO_DATA_PKT: 1017 pktstr = "sco data"; 1018 break; 1019 1020 case HCI_EVENT_PKT: 1021 break; 1022 1023 default: 1024 pktstr = "unknown"; 1025 break; 1026 } 1027 if (pktstr != NULL) 1028 printf("%s: %s packet was received in initialization phase\n", 1029 unit->hci_devname, pktstr); 1030 if ( 1031 #ifdef BTUART_DEBUG 1032 btuart_debug || 1033 #endif 1034 pktstr != NULL) { 1035 printf("%s: %s:", __FUNCTION__, unit->hci_devname); 1036 for (i = 0; i < m->m_len; i++) 1037 printf(" %02x", *(rptr + i)); 1038 printf("\n"); 1039 } 1040 1041 if (*rptr == HCI_EVENT_PKT) 1042 if (unit->hci_eventqlen <= hci_eventq_max) { 1043 unit->hci_eventqlen++; 1044 MBUFQ_ENQUEUE(&unit->hci_eventq, m); 1045 m = NULL; 1046 wakeup(&unit->hci_eventq); 1047 } 1048 1049 if (m != NULL) 1050 m_freem(m); 1051 } 1052 1053 1054 /* 1055 * Line discipline functions. 1056 */ 1057 /* ARGSUSED */ 1058 static int 1059 bth4open(dev_t device __unused, struct tty *tp) 1060 { 1061 struct btuart_softc *sc; 1062 struct cfdata *cfdata; 1063 struct lwp *l = curlwp; /* XXX */ 1064 int error, unit, s; 1065 static char name[] = "btuart"; 1066 1067 if ((error = kauth_authorize_device_tty(l->l_cred, 1068 KAUTH_GENERIC_ISSUSER, tp)) != 0) 1069 return error; 1070 1071 s = spltty(); 1072 1073 if (tp->t_linesw == &bth4_disc) { 1074 sc = (struct btuart_softc *)tp->t_sc; 1075 if (sc != NULL) { 1076 splx(s); 1077 return EBUSY; 1078 } 1079 } 1080 1081 KASSERT(tp->t_oproc != NULL); 1082 1083 cfdata = malloc(sizeof(struct cfdata), M_DEVBUF, M_WAITOK); 1084 for (unit = 0; unit < btuart_cd.cd_ndevs; unit++) 1085 if (btuart_cd.cd_devs[unit] == NULL) 1086 break; 1087 cfdata->cf_name = name; 1088 cfdata->cf_atname = name; 1089 cfdata->cf_unit = unit; 1090 cfdata->cf_fstate = FSTATE_STAR; 1091 1092 printf("%s%d at tty major %d minor %d", 1093 name, unit, major(tp->t_dev), minor(tp->t_dev)); 1094 sc = (struct btuart_softc *)config_attach_pseudo(cfdata); 1095 if (sc == NULL) { 1096 splx(s); 1097 return EIO; 1098 } 1099 tp->t_sc = sc; 1100 sc->sc_tp = tp; 1101 1102 ttyflush(tp, FREAD | FWRITE); 1103 1104 splx(s); 1105 1106 return 0; 1107 } 1108 1109 /* ARGSUSED */ 1110 static int 1111 bth4close(struct tty *tp, int flag __unused) 1112 { 1113 struct btuart_softc *sc; 1114 struct cfdata *cfdata; 1115 int s, baud; 1116 1117 sc = tp->t_sc; 1118 1119 /* reset to initial speed */ 1120 if (sc->sc_bth4hci.init != NULL) { 1121 baud = sc->sc_baud; 1122 sc->sc_baud = sc->sc_bth4hci.init_baud; 1123 sc->sc_bth4hci.init_baud = baud; 1124 s = splserial(); 1125 sc->sc_input_acl = bth4init_input; 1126 sc->sc_input_sco = bth4init_input; 1127 sc->sc_input_event = bth4init_input; 1128 splx(s); 1129 if ((*sc->sc_bth4hci.init)(sc) != 0) 1130 printf("%s: reset speed fail\n", sc->sc_dev.dv_xname); 1131 } 1132 1133 s = spltty(); 1134 ttyflush(tp, FREAD | FWRITE); 1135 ttyldisc_release(tp->t_linesw); 1136 tp->t_linesw = ttyldisc_default(); 1137 if (sc != NULL) { 1138 tp->t_sc = NULL; 1139 if (sc->sc_tp == tp) { 1140 cfdata = sc->sc_dev.dv_cfdata; 1141 config_detach(&sc->sc_dev, 0); 1142 free(cfdata, M_DEVBUF); 1143 } 1144 1145 } 1146 splx(s); 1147 return 0; 1148 } 1149 1150 /* ARGSUSED */ 1151 static int 1152 bth4ioctl(struct tty *tp, u_long cmd, void *data, 1153 int flag __unused, struct lwp *l __unused) 1154 { 1155 struct btuart_softc *sc = (struct btuart_softc *)tp->t_sc; 1156 int error, i; 1157 1158 if (sc == NULL || tp != sc->sc_tp) 1159 return EPASSTHROUGH; 1160 1161 error = 0; 1162 switch (cmd) { 1163 case BTUART_HCITYPE: 1164 for (i = 0; bth4hci[i].type != -1; i++) 1165 if (bth4hci[i].type == *(uint32_t *)data) 1166 break; 1167 if (bth4hci[i].type != -1) 1168 memcpy(&sc->sc_bth4hci, &bth4hci[i], 1169 sizeof(struct bth4hci)); 1170 else 1171 error = EINVAL; 1172 break; 1173 1174 case BTUART_INITSPEED: 1175 sc->sc_bth4hci.init_baud = *(uint32_t *)data; 1176 break; 1177 1178 case BTUART_START: 1179 error = bth4init(sc); 1180 break; 1181 1182 default: 1183 error = EPASSTHROUGH; 1184 break; 1185 } 1186 1187 return error; 1188 } 1189 1190 static int 1191 bth4input(int c, struct tty *tp) 1192 { 1193 struct btuart_softc *sc = (struct btuart_softc *)tp->t_sc; 1194 struct mbuf *m = sc->sc_rxp; 1195 int space = 0; 1196 1197 c &= TTY_CHARMASK; 1198 1199 /* If we already started a packet, find the trailing end of it. */ 1200 if (m) { 1201 while (m->m_next) 1202 m = m->m_next; 1203 1204 space = M_TRAILINGSPACE(m); 1205 } 1206 1207 if (space == 0) { 1208 if (m == NULL) { 1209 /* new packet */ 1210 MGETHDR(m, M_DONTWAIT, MT_DATA); 1211 if (m == NULL) { 1212 printf("%s: out of memory\n", 1213 sc->sc_dev.dv_xname); 1214 ++sc->sc_unit.hci_stats.err_rx; 1215 return 0; /* (lost sync) */ 1216 } 1217 1218 sc->sc_rxp = m; 1219 m->m_pkthdr.len = m->m_len = 0; 1220 space = MHLEN; 1221 1222 sc->sc_state = BTUART_RECV_PKT_TYPE; 1223 sc->sc_want = 1; 1224 } else { 1225 /* extend mbuf */ 1226 MGET(m->m_next, M_DONTWAIT, MT_DATA); 1227 if (m->m_next == NULL) { 1228 printf("%s: out of memory\n", 1229 sc->sc_dev.dv_xname); 1230 ++sc->sc_unit.hci_stats.err_rx; 1231 return 0; /* (lost sync) */ 1232 } 1233 1234 m = m->m_next; 1235 m->m_len = 0; 1236 space = MLEN; 1237 1238 if (sc->sc_want > MINCLSIZE) { 1239 MCLGET(m, M_DONTWAIT); 1240 if (m->m_flags & M_EXT) 1241 space = MCLBYTES; 1242 } 1243 } 1244 } 1245 1246 mtod(m, uint8_t *)[m->m_len++] = c; 1247 sc->sc_rxp->m_pkthdr.len++; 1248 sc->sc_unit.hci_stats.byte_rx++; 1249 1250 sc->sc_want--; 1251 if (sc->sc_want > 0) 1252 return 0; /* want more */ 1253 1254 switch (sc->sc_state) { 1255 case BTUART_RECV_PKT_TYPE: /* Got packet type */ 1256 1257 switch (c) { 1258 case HCI_ACL_DATA_PKT: 1259 sc->sc_state = BTUART_RECV_ACL_HDR; 1260 sc->sc_want = sizeof(hci_acldata_hdr_t) - 1; 1261 break; 1262 1263 case HCI_SCO_DATA_PKT: 1264 sc->sc_state = BTUART_RECV_SCO_HDR; 1265 sc->sc_want = sizeof(hci_scodata_hdr_t) - 1; 1266 break; 1267 1268 case HCI_EVENT_PKT: 1269 sc->sc_state = BTUART_RECV_EVENT_HDR; 1270 sc->sc_want = sizeof(hci_event_hdr_t) - 1; 1271 break; 1272 1273 default: 1274 printf("%s: Unknown packet type=%#x!\n", 1275 sc->sc_dev.dv_xname, c); 1276 sc->sc_unit.hci_stats.err_rx++; 1277 m_freem(sc->sc_rxp); 1278 sc->sc_rxp = NULL; 1279 return 0; /* (lost sync) */ 1280 } 1281 1282 break; 1283 1284 /* 1285 * we assume (correctly of course :) that the packet headers all fit 1286 * into a single pkthdr mbuf 1287 */ 1288 case BTUART_RECV_ACL_HDR: /* Got ACL Header */ 1289 sc->sc_state = BTUART_RECV_ACL_DATA; 1290 sc->sc_want = mtod(m, hci_acldata_hdr_t *)->length; 1291 sc->sc_want = le16toh(sc->sc_want); 1292 break; 1293 1294 case BTUART_RECV_SCO_HDR: /* Got SCO Header */ 1295 sc->sc_state = BTUART_RECV_SCO_DATA; 1296 sc->sc_want = mtod(m, hci_scodata_hdr_t *)->length; 1297 break; 1298 1299 case BTUART_RECV_EVENT_HDR: /* Got Event Header */ 1300 sc->sc_state = BTUART_RECV_EVENT_DATA; 1301 sc->sc_want = mtod(m, hci_event_hdr_t *)->length; 1302 break; 1303 1304 case BTUART_RECV_ACL_DATA: /* ACL Packet Complete */ 1305 (*sc->sc_input_acl)(&sc->sc_unit, sc->sc_rxp); 1306 sc->sc_unit.hci_stats.acl_rx++; 1307 sc->sc_rxp = m = NULL; 1308 break; 1309 1310 case BTUART_RECV_SCO_DATA: /* SCO Packet Complete */ 1311 (*sc->sc_input_sco)(&sc->sc_unit, sc->sc_rxp); 1312 sc->sc_unit.hci_stats.sco_rx++; 1313 sc->sc_rxp = m = NULL; 1314 break; 1315 1316 case BTUART_RECV_EVENT_DATA: /* Event Packet Complete */ 1317 sc->sc_unit.hci_stats.evt_rx++; 1318 (*sc->sc_input_event)(&sc->sc_unit, sc->sc_rxp); 1319 sc->sc_rxp = m = NULL; 1320 break; 1321 1322 default: 1323 panic("%s: invalid state %d!\n", 1324 sc->sc_dev.dv_xname, sc->sc_state); 1325 } 1326 1327 return 0; 1328 } 1329 1330 static int 1331 bth4start(struct tty *tp) 1332 { 1333 struct btuart_softc *sc = (struct btuart_softc *)tp->t_sc; 1334 struct mbuf *m; 1335 int count, rlen; 1336 uint8_t *rptr; 1337 1338 m = sc->sc_txp; 1339 if (m == NULL) { 1340 sc->sc_unit.hci_flags &= ~BTF_XMIT; 1341 bth4_start(&sc->sc_unit); 1342 return 0; 1343 } 1344 1345 count = 0; 1346 rlen = 0; 1347 rptr = mtod(m, uint8_t *); 1348 1349 for(;;) { 1350 if (rlen >= m->m_len) { 1351 m = m->m_next; 1352 if (m == NULL) { 1353 m = sc->sc_txp; 1354 sc->sc_txp = NULL; 1355 1356 if (M_GETCTX(m, void *) == NULL) 1357 m_freem(m); 1358 else 1359 hci_complete_sco(&sc->sc_unit, m); 1360 1361 break; 1362 } 1363 1364 rlen = 0; 1365 rptr = mtod(m, uint8_t *); 1366 continue; 1367 } 1368 1369 if (putc(*rptr++, &tp->t_outq) < 0) { 1370 m_adj(m, rlen); 1371 break; 1372 } 1373 rlen++; 1374 count++; 1375 } 1376 1377 sc->sc_unit.hci_stats.byte_tx += count; 1378 1379 if (tp->t_outq.c_cc != 0) 1380 (*tp->t_oproc)(tp); 1381 1382 return 0; 1383 } 1384 1385 1386 /* 1387 * HCI UART (H4) functions. 1388 */ 1389 static int 1390 bth4_enable(struct hci_unit *unit) 1391 { 1392 1393 if (unit->hci_flags & BTF_RUNNING) 1394 return 0; 1395 1396 unit->hci_flags |= BTF_RUNNING; 1397 unit->hci_flags &= ~BTF_XMIT; 1398 1399 return 0; 1400 } 1401 1402 static void 1403 bth4_disable(struct hci_unit *unit) 1404 { 1405 struct btuart_softc *sc = unit->hci_softc; 1406 1407 if ((unit->hci_flags & BTF_RUNNING) == 0) 1408 return; 1409 1410 if (sc->sc_rxp) { 1411 m_freem(sc->sc_rxp); 1412 sc->sc_rxp = NULL; 1413 } 1414 1415 if (sc->sc_txp) { 1416 m_freem(sc->sc_txp); 1417 sc->sc_txp = NULL; 1418 } 1419 1420 unit->hci_flags &= ~BTF_RUNNING; 1421 } 1422 1423 static void 1424 bth4_start(struct hci_unit *unit) 1425 { 1426 struct btuart_softc *sc = unit->hci_softc; 1427 struct mbuf *m; 1428 1429 KASSERT((unit->hci_flags & BTF_XMIT) == 0); 1430 KASSERT(sc->sc_txp == NULL); 1431 1432 if (MBUFQ_FIRST(&unit->hci_cmdq)) { 1433 MBUFQ_DEQUEUE(&unit->hci_cmdq, m); 1434 unit->hci_stats.cmd_tx++; 1435 M_SETCTX(m, NULL); 1436 goto start; 1437 } 1438 1439 if (MBUFQ_FIRST(&unit->hci_scotxq)) { 1440 MBUFQ_DEQUEUE(&unit->hci_scotxq, m); 1441 unit->hci_stats.sco_tx++; 1442 goto start; 1443 } 1444 1445 if (MBUFQ_FIRST(&unit->hci_acltxq)) { 1446 MBUFQ_DEQUEUE(&unit->hci_acltxq, m); 1447 unit->hci_stats.acl_tx++; 1448 M_SETCTX(m, NULL); 1449 goto start; 1450 } 1451 1452 /* Nothing to send */ 1453 return; 1454 1455 start: 1456 sc->sc_txp = m; 1457 unit->hci_flags |= BTF_XMIT; 1458 bth4start(sc->sc_tp); 1459 } 1460
Indexes created Wed Oct 01 13:09:50 GMT 2025