1 | /* $NetBSD: bcsp.c,v 1.30 2016/08/15 08:20:11 maxv Exp $ */ |
2 | /* |
3 | * Copyright (c) 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: bcsp.c,v 1.30 2016/08/15 08:20:11 maxv Exp $" ); |
30 | |
31 | #include <sys/types.h> |
32 | #include <sys/param.h> |
33 | #include <sys/callout.h> |
34 | #include <sys/conf.h> |
35 | #include <sys/device.h> |
36 | #include <sys/errno.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/sysctl.h> |
44 | #include <sys/syslimits.h> |
45 | #include <sys/systm.h> |
46 | #include <sys/tty.h> |
47 | |
48 | #include <netbt/bluetooth.h> |
49 | #include <netbt/hci.h> |
50 | |
51 | #include <dev/bluetooth/bcsp.h> |
52 | |
53 | #include "ioconf.h" |
54 | |
55 | #ifdef BCSP_DEBUG |
56 | #ifdef DPRINTF |
57 | #undef DPRINTF |
58 | #endif |
59 | #ifdef DPRINTFN |
60 | #undef DPRINTFN |
61 | #endif |
62 | |
63 | #define DPRINTF(x) printf x |
64 | #define DPRINTFN(n, x) do { if (bcsp_debug > (n)) printf x; } while (0) |
65 | int bcsp_debug = 3; |
66 | #else |
67 | #undef DPRINTF |
68 | #undef DPRINTFN |
69 | |
70 | #define DPRINTF(x) |
71 | #define DPRINTFN(n, x) |
72 | #endif |
73 | |
74 | struct bcsp_softc { |
75 | device_t sc_dev; |
76 | |
77 | struct tty *sc_tp; |
78 | struct hci_unit *sc_unit; /* Bluetooth HCI Unit */ |
79 | struct bt_stats sc_stats; |
80 | |
81 | int sc_flags; |
82 | |
83 | /* output queues */ |
84 | MBUFQ_HEAD() sc_cmdq; |
85 | MBUFQ_HEAD() sc_aclq; |
86 | MBUFQ_HEAD() sc_scoq; |
87 | |
88 | int sc_baud; |
89 | int sc_init_baud; |
90 | |
91 | /* variables of SLIP Layer */ |
92 | struct mbuf *sc_txp; /* outgoing packet */ |
93 | struct mbuf *sc_rxp; /* incoming packet */ |
94 | int sc_slip_txrsv; /* reserved byte data */ |
95 | int sc_slip_rxexp; /* expected byte data */ |
96 | void (*sc_transmit_callback)(struct bcsp_softc *, struct mbuf *); |
97 | |
98 | /* variables of Packet Integrity Layer */ |
99 | int sc_pi_txcrc; /* use CRC, if true */ |
100 | |
101 | /* variables of MUX Layer */ |
102 | bool sc_mux_send_ack; /* flag for send_ack */ |
103 | bool sc_mux_choke; /* Choke signal */ |
104 | struct timeval sc_mux_lastrx; /* Last Rx Pkt Time */ |
105 | |
106 | /* variables of Sequencing Layer */ |
107 | MBUFQ_HEAD() sc_seqq; /* Sequencing Layer queue */ |
108 | MBUFQ_HEAD() sc_seq_retryq; /* retry queue */ |
109 | uint32_t sc_seq_txseq; |
110 | uint32_t sc_seq_txack; |
111 | uint32_t sc_seq_expected_rxseq; |
112 | uint32_t sc_seq_winspace; |
113 | uint32_t sc_seq_retries; |
114 | callout_t sc_seq_timer; |
115 | uint32_t sc_seq_timeout; |
116 | uint32_t sc_seq_winsize; |
117 | uint32_t sc_seq_retry_limit; |
118 | |
119 | /* variables of Datagram Queue Layer */ |
120 | MBUFQ_HEAD() sc_dgq; /* Datagram Queue Layer queue */ |
121 | |
122 | /* variables of BCSP Link Establishment Protocol */ |
123 | bool sc_le_muzzled; |
124 | bcsp_le_state_t sc_le_state; |
125 | callout_t sc_le_timer; |
126 | |
127 | struct sysctllog *sc_log; /* sysctl log */ |
128 | }; |
129 | |
130 | /* sc_flags */ |
131 | #define BCSP_XMIT (1 << 0) /* transmit active */ |
132 | #define BCSP_ENABLED (1 << 1) /* is enabled */ |
133 | |
134 | static int bcsp_match(device_t, cfdata_t, void *); |
135 | static void bcsp_attach(device_t, device_t, void *); |
136 | static int bcsp_detach(device_t, int); |
137 | |
138 | /* tty functions */ |
139 | static int bcspopen(dev_t, struct tty *); |
140 | static int bcspclose(struct tty *, int); |
141 | static int bcspioctl(struct tty *, u_long, void *, int, struct lwp *); |
142 | |
143 | static int bcsp_slip_transmit(struct tty *); |
144 | static int bcsp_slip_receive(int, struct tty *); |
145 | |
146 | static void bcsp_pktintegrity_transmit(struct bcsp_softc *); |
147 | static void bcsp_pktintegrity_receive(struct bcsp_softc *, struct mbuf *); |
148 | static void bcsp_crc_update(uint16_t *, uint8_t); |
149 | static uint16_t bcsp_crc_reverse(uint16_t); |
150 | |
151 | static void bcsp_mux_transmit(struct bcsp_softc *sc); |
152 | static void bcsp_mux_receive(struct bcsp_softc *sc, struct mbuf *m); |
153 | static __inline void bcsp_send_ack_command(struct bcsp_softc *sc); |
154 | static __inline struct mbuf *bcsp_create_ackpkt(void); |
155 | static __inline void bcsp_set_choke(struct bcsp_softc *, bool); |
156 | |
157 | static void bcsp_sequencing_receive(struct bcsp_softc *, struct mbuf *); |
158 | static bool bcsp_tx_reliable_pkt(struct bcsp_softc *, struct mbuf *, u_int); |
159 | static __inline u_int bcsp_get_txack(struct bcsp_softc *); |
160 | static void bcsp_signal_rxack(struct bcsp_softc *, uint32_t); |
161 | static void bcsp_reliabletx_callback(struct bcsp_softc *, struct mbuf *); |
162 | static void bcsp_timer_timeout(void *); |
163 | static void bcsp_sequencing_reset(struct bcsp_softc *); |
164 | |
165 | static void bcsp_datagramq_receive(struct bcsp_softc *, struct mbuf *); |
166 | static bool bcsp_tx_unreliable_pkt(struct bcsp_softc *, struct mbuf *, u_int); |
167 | static void bcsp_unreliabletx_callback(struct bcsp_softc *, struct mbuf *); |
168 | |
169 | static int bcsp_start_le(struct bcsp_softc *); |
170 | static void bcsp_terminate_le(struct bcsp_softc *); |
171 | static void bcsp_input_le(struct bcsp_softc *, struct mbuf *); |
172 | static void bcsp_le_timeout(void *); |
173 | |
174 | static void bcsp_start(struct bcsp_softc *); |
175 | |
176 | /* bluetooth hci functions */ |
177 | static int bcsp_enable(device_t); |
178 | static void bcsp_disable(device_t); |
179 | static void bcsp_output_cmd(device_t, struct mbuf *); |
180 | static void bcsp_output_acl(device_t, struct mbuf *); |
181 | static void bcsp_output_sco(device_t, struct mbuf *); |
182 | static void bcsp_stats(device_t, struct bt_stats *, int); |
183 | |
184 | #ifdef BCSP_DEBUG |
185 | static void bcsp_packet_print(struct mbuf *m); |
186 | #endif |
187 | |
188 | |
189 | /* |
190 | * It doesn't need to be exported, as only bcspattach() uses it, |
191 | * but there's no "official" way to make it static. |
192 | */ |
193 | CFATTACH_DECL_NEW(bcsp, sizeof(struct bcsp_softc), |
194 | bcsp_match, bcsp_attach, bcsp_detach, NULL); |
195 | |
196 | static struct linesw bcsp_disc = { |
197 | .l_name = "bcsp" , |
198 | .l_open = bcspopen, |
199 | .l_close = bcspclose, |
200 | .l_read = ttyerrio, |
201 | .l_write = ttyerrio, |
202 | .l_ioctl = bcspioctl, |
203 | .l_rint = bcsp_slip_receive, |
204 | .l_start = bcsp_slip_transmit, |
205 | .l_modem = ttymodem, |
206 | .l_poll = ttyerrpoll |
207 | }; |
208 | |
209 | static const struct hci_if bcsp_hci = { |
210 | .enable = bcsp_enable, |
211 | .disable = bcsp_disable, |
212 | .output_cmd = bcsp_output_cmd, |
213 | .output_acl = bcsp_output_acl, |
214 | .output_sco = bcsp_output_sco, |
215 | .get_stats = bcsp_stats, |
216 | .ipl = IPL_TTY, |
217 | }; |
218 | |
219 | /* ARGSUSED */ |
220 | void |
221 | bcspattach(int num __unused) |
222 | { |
223 | int error; |
224 | |
225 | error = ttyldisc_attach(&bcsp_disc); |
226 | if (error) { |
227 | aprint_error("%s: unable to register line discipline, " |
228 | "error = %d\n" , bcsp_cd.cd_name, error); |
229 | return; |
230 | } |
231 | |
232 | error = config_cfattach_attach(bcsp_cd.cd_name, &bcsp_ca); |
233 | if (error) { |
234 | aprint_error("%s: unable to register cfattach, error = %d\n" , |
235 | bcsp_cd.cd_name, error); |
236 | config_cfdriver_detach(&bcsp_cd); |
237 | (void) ttyldisc_detach(&bcsp_disc); |
238 | } |
239 | } |
240 | |
241 | /* |
242 | * Autoconf match routine. |
243 | * |
244 | * XXX: unused: config_attach_pseudo(9) does not call ca_match. |
245 | */ |
246 | /* ARGSUSED */ |
247 | static int |
248 | bcsp_match(device_t self __unused, cfdata_t cfdata __unused, |
249 | void *arg __unused) |
250 | { |
251 | |
252 | /* pseudo-device; always present */ |
253 | return 1; |
254 | } |
255 | |
256 | /* |
257 | * Autoconf attach routine. Called by config_attach_pseudo(9) when we |
258 | * open the line discipline. |
259 | */ |
260 | /* ARGSUSED */ |
261 | static void |
262 | bcsp_attach(device_t parent __unused, device_t self, void *aux __unused) |
263 | { |
264 | struct bcsp_softc *sc = device_private(self); |
265 | const struct sysctlnode *node; |
266 | int rc, bcsp_node_num; |
267 | |
268 | aprint_normal("\n" ); |
269 | aprint_naive("\n" ); |
270 | |
271 | sc->sc_dev = self; |
272 | callout_init(&sc->sc_seq_timer, 0); |
273 | callout_setfunc(&sc->sc_seq_timer, bcsp_timer_timeout, sc); |
274 | callout_init(&sc->sc_le_timer, 0); |
275 | callout_setfunc(&sc->sc_le_timer, bcsp_le_timeout, sc); |
276 | sc->sc_seq_timeout = BCSP_SEQ_TX_TIMEOUT; |
277 | sc->sc_seq_winsize = BCSP_SEQ_TX_WINSIZE; |
278 | sc->sc_seq_retry_limit = BCSP_SEQ_TX_RETRY_LIMIT; |
279 | MBUFQ_INIT(&sc->sc_seqq); |
280 | MBUFQ_INIT(&sc->sc_seq_retryq); |
281 | MBUFQ_INIT(&sc->sc_dgq); |
282 | MBUFQ_INIT(&sc->sc_cmdq); |
283 | MBUFQ_INIT(&sc->sc_aclq); |
284 | MBUFQ_INIT(&sc->sc_scoq); |
285 | |
286 | /* Attach Bluetooth unit */ |
287 | sc->sc_unit = hci_attach_pcb(&bcsp_hci, self, 0); |
288 | |
289 | if ((rc = sysctl_createv(&sc->sc_log, 0, NULL, &node, |
290 | 0, CTLTYPE_NODE, device_xname(self), |
291 | SYSCTL_DESCR("bcsp controls" ), |
292 | NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) { |
293 | goto err; |
294 | } |
295 | bcsp_node_num = node->sysctl_num; |
296 | if ((rc = sysctl_createv(&sc->sc_log, 0, NULL, &node, |
297 | CTLFLAG_READWRITE, CTLTYPE_BOOL, |
298 | "muzzled" , SYSCTL_DESCR("muzzled for Link-establishment Layer" ), |
299 | NULL, 0, &sc->sc_le_muzzled, |
300 | 0, CTL_HW, bcsp_node_num, CTL_CREATE, CTL_EOL)) != 0) { |
301 | goto err; |
302 | } |
303 | if ((rc = sysctl_createv(&sc->sc_log, 0, NULL, &node, |
304 | CTLFLAG_READWRITE, CTLTYPE_INT, |
305 | "txcrc" , SYSCTL_DESCR("txcrc for Packet Integrity Layer" ), |
306 | NULL, 0, &sc->sc_pi_txcrc, |
307 | 0, CTL_HW, bcsp_node_num, CTL_CREATE, CTL_EOL)) != 0) { |
308 | goto err; |
309 | } |
310 | if ((rc = sysctl_createv(&sc->sc_log, 0, NULL, &node, |
311 | CTLFLAG_READWRITE, CTLTYPE_INT, |
312 | "timeout" , SYSCTL_DESCR("timeout for Sequencing Layer" ), |
313 | NULL, 0, &sc->sc_seq_timeout, |
314 | 0, CTL_HW, bcsp_node_num, CTL_CREATE, CTL_EOL)) != 0) { |
315 | goto err; |
316 | } |
317 | if ((rc = sysctl_createv(&sc->sc_log, 0, NULL, &node, |
318 | CTLFLAG_READWRITE, CTLTYPE_INT, |
319 | "winsize" , SYSCTL_DESCR("winsize for Sequencing Layer" ), |
320 | NULL, 0, &sc->sc_seq_winsize, |
321 | 0, CTL_HW, bcsp_node_num, CTL_CREATE, CTL_EOL)) != 0) { |
322 | goto err; |
323 | } |
324 | if ((rc = sysctl_createv(&sc->sc_log, 0, NULL, &node, |
325 | CTLFLAG_READWRITE, CTLTYPE_INT, |
326 | "retry_limit" , SYSCTL_DESCR("retry limit for Sequencing Layer" ), |
327 | NULL, 0, &sc->sc_seq_retry_limit, |
328 | 0, CTL_HW, bcsp_node_num, CTL_CREATE, CTL_EOL)) != 0) { |
329 | goto err; |
330 | } |
331 | return; |
332 | |
333 | err: |
334 | aprint_error_dev(self, "sysctl_createv failed (rc = %d)\n" , rc); |
335 | } |
336 | |
337 | /* |
338 | * Autoconf detach routine. Called when we close the line discipline. |
339 | */ |
340 | /* ARGSUSED */ |
341 | static int |
342 | bcsp_detach(device_t self, int flags __unused) |
343 | { |
344 | struct bcsp_softc *sc = device_private(self); |
345 | |
346 | if (sc->sc_unit != NULL) { |
347 | hci_detach_pcb(sc->sc_unit); |
348 | sc->sc_unit = NULL; |
349 | } |
350 | |
351 | callout_halt(&sc->sc_seq_timer, NULL); |
352 | callout_destroy(&sc->sc_seq_timer); |
353 | |
354 | callout_halt(&sc->sc_le_timer, NULL); |
355 | callout_destroy(&sc->sc_le_timer); |
356 | |
357 | return 0; |
358 | } |
359 | |
360 | |
361 | /* |
362 | * Line discipline functions. |
363 | */ |
364 | /* ARGSUSED */ |
365 | static int |
366 | bcspopen(dev_t device __unused, struct tty *tp) |
367 | { |
368 | struct bcsp_softc *sc; |
369 | device_t dev; |
370 | cfdata_t cfdata; |
371 | struct lwp *l = curlwp; /* XXX */ |
372 | int error, unit, s; |
373 | static char name[] = "bcsp" ; |
374 | |
375 | error = kauth_authorize_device(l->l_cred, KAUTH_DEVICE_BLUETOOTH_BCSP, |
376 | KAUTH_ARG(KAUTH_REQ_DEVICE_BLUETOOTH_BCSP_ADD), NULL, NULL, NULL); |
377 | if (error) |
378 | return (error); |
379 | |
380 | s = spltty(); |
381 | |
382 | if (tp->t_linesw == &bcsp_disc) { |
383 | sc = tp->t_sc; |
384 | if (sc != NULL) { |
385 | splx(s); |
386 | return EBUSY; |
387 | } |
388 | } |
389 | |
390 | KASSERT(tp->t_oproc != NULL); |
391 | |
392 | cfdata = malloc(sizeof(struct cfdata), M_DEVBUF, M_WAITOK); |
393 | for (unit = 0; unit < bcsp_cd.cd_ndevs; unit++) |
394 | if (device_lookup(&bcsp_cd, unit) == NULL) |
395 | break; |
396 | cfdata->cf_name = name; |
397 | cfdata->cf_atname = name; |
398 | cfdata->cf_unit = unit; |
399 | cfdata->cf_fstate = FSTATE_STAR; |
400 | |
401 | aprint_normal("%s%d at tty major %llu minor %llu" , |
402 | name, unit, (unsigned long long)major(tp->t_dev), |
403 | (unsigned long long)minor(tp->t_dev)); |
404 | dev = config_attach_pseudo(cfdata); |
405 | if (dev == NULL) { |
406 | splx(s); |
407 | return EIO; |
408 | } |
409 | sc = device_private(dev); |
410 | |
411 | mutex_spin_enter(&tty_lock); |
412 | tp->t_sc = sc; |
413 | sc->sc_tp = tp; |
414 | ttyflush(tp, FREAD | FWRITE); |
415 | mutex_spin_exit(&tty_lock); |
416 | |
417 | splx(s); |
418 | |
419 | sc->sc_slip_txrsv = BCSP_SLIP_PKTSTART; |
420 | bcsp_sequencing_reset(sc); |
421 | |
422 | /* start link-establishment */ |
423 | bcsp_start_le(sc); |
424 | |
425 | return 0; |
426 | } |
427 | |
428 | /* ARGSUSED */ |
429 | static int |
430 | bcspclose(struct tty *tp, int flag __unused) |
431 | { |
432 | struct bcsp_softc *sc = tp->t_sc; |
433 | cfdata_t cfdata; |
434 | int s; |
435 | |
436 | /* terminate link-establishment */ |
437 | bcsp_terminate_le(sc); |
438 | |
439 | s = spltty(); |
440 | |
441 | MBUFQ_DRAIN(&sc->sc_dgq); |
442 | bcsp_sequencing_reset(sc); |
443 | |
444 | mutex_spin_enter(&tty_lock); |
445 | ttyflush(tp, FREAD | FWRITE); |
446 | mutex_spin_exit(&tty_lock); /* XXX */ |
447 | ttyldisc_release(tp->t_linesw); |
448 | tp->t_linesw = ttyldisc_default(); |
449 | if (sc != NULL) { |
450 | tp->t_sc = NULL; |
451 | if (sc->sc_tp == tp) { |
452 | cfdata = device_cfdata(sc->sc_dev); |
453 | config_detach(sc->sc_dev, 0); |
454 | free(cfdata, M_DEVBUF); |
455 | } |
456 | |
457 | } |
458 | splx(s); |
459 | return 0; |
460 | } |
461 | |
462 | /* ARGSUSED */ |
463 | static int |
464 | bcspioctl(struct tty *tp, u_long cmd, void *data, int flag __unused, |
465 | struct lwp *l __unused) |
466 | { |
467 | struct bcsp_softc *sc = tp->t_sc; |
468 | int error; |
469 | |
470 | if (sc == NULL || tp != sc->sc_tp) |
471 | return EPASSTHROUGH; |
472 | |
473 | error = 0; |
474 | switch (cmd) { |
475 | default: |
476 | error = EPASSTHROUGH; |
477 | break; |
478 | } |
479 | |
480 | return error; |
481 | } |
482 | |
483 | |
484 | /* |
485 | * UART Driver Layer is supported by com-driver. |
486 | */ |
487 | |
488 | /* |
489 | * BCSP SLIP Layer functions: |
490 | * Supports to transmit/receive a byte stream. |
491 | * SLIP protocol described in Internet standard RFC 1055. |
492 | */ |
493 | static int |
494 | bcsp_slip_transmit(struct tty *tp) |
495 | { |
496 | struct bcsp_softc *sc = tp->t_sc; |
497 | struct mbuf *m; |
498 | int count, rlen; |
499 | uint8_t *rptr; |
500 | |
501 | m = sc->sc_txp; |
502 | if (m == NULL) { |
503 | sc->sc_flags &= ~BCSP_XMIT; |
504 | bcsp_mux_transmit(sc); |
505 | return 0; |
506 | } |
507 | |
508 | count = 0; |
509 | rlen = 0; |
510 | rptr = mtod(m, uint8_t *); |
511 | |
512 | if (sc->sc_slip_txrsv != 0) { |
513 | #ifdef BCSP_DEBUG |
514 | if (sc->sc_slip_txrsv == BCSP_SLIP_PKTSTART) |
515 | DPRINTFN(4, ("%s: slip transmit start\n" , |
516 | device_xname(sc->sc_dev))); |
517 | else |
518 | DPRINTFN(4, ("0x%02x " , sc->sc_slip_txrsv)); |
519 | #endif |
520 | |
521 | if (putc(sc->sc_slip_txrsv, &tp->t_outq) < 0) |
522 | return 0; |
523 | count++; |
524 | |
525 | if (sc->sc_slip_txrsv == BCSP_SLIP_ESCAPE_PKTEND || |
526 | sc->sc_slip_txrsv == BCSP_SLIP_ESCAPE_ESCAPE) { |
527 | rlen++; |
528 | rptr++; |
529 | } |
530 | sc->sc_slip_txrsv = 0; |
531 | } |
532 | |
533 | for(;;) { |
534 | if (rlen >= m->m_len) { |
535 | m = m->m_next; |
536 | if (m == NULL) { |
537 | if (putc(BCSP_SLIP_PKTEND, &tp->t_outq) < 0) |
538 | break; |
539 | |
540 | DPRINTFN(4, ("\n%s: slip transmit end\n" , |
541 | device_xname(sc->sc_dev))); |
542 | |
543 | m = sc->sc_txp; |
544 | sc->sc_txp = NULL; |
545 | sc->sc_slip_txrsv = BCSP_SLIP_PKTSTART; |
546 | |
547 | sc->sc_transmit_callback(sc, m); |
548 | m = NULL; |
549 | break; |
550 | } |
551 | |
552 | rlen = 0; |
553 | rptr = mtod(m, uint8_t *); |
554 | continue; |
555 | } |
556 | |
557 | if (*rptr == BCSP_SLIP_PKTEND) { |
558 | if (putc(BCSP_SLIP_ESCAPE, &tp->t_outq) < 0) |
559 | break; |
560 | count++; |
561 | DPRINTFN(4, (" esc " )); |
562 | |
563 | if (putc(BCSP_SLIP_ESCAPE_PKTEND, &tp->t_outq) < 0) { |
564 | sc->sc_slip_txrsv = BCSP_SLIP_ESCAPE_PKTEND; |
565 | break; |
566 | } |
567 | DPRINTFN(4, ("0x%02x " , BCSP_SLIP_ESCAPE_PKTEND)); |
568 | rptr++; |
569 | } else if (*rptr == BCSP_SLIP_ESCAPE) { |
570 | if (putc(BCSP_SLIP_ESCAPE, &tp->t_outq) < 0) |
571 | break; |
572 | count++; |
573 | DPRINTFN(4, (" esc " )); |
574 | |
575 | if (putc(BCSP_SLIP_ESCAPE_ESCAPE, &tp->t_outq) < 0) { |
576 | sc->sc_slip_txrsv = BCSP_SLIP_ESCAPE_ESCAPE; |
577 | break; |
578 | } |
579 | DPRINTFN(4, ("0x%02x " , BCSP_SLIP_ESCAPE_ESCAPE)); |
580 | rptr++; |
581 | } else { |
582 | if (putc(*rptr++, &tp->t_outq) < 0) |
583 | break; |
584 | DPRINTFN(4, ("0x%02x " , *(rptr - 1))); |
585 | } |
586 | rlen++; |
587 | count++; |
588 | } |
589 | if (m != NULL) |
590 | m_adj(m, rlen); |
591 | |
592 | sc->sc_stats.byte_tx += count; |
593 | |
594 | if (tp->t_outq.c_cc != 0) |
595 | (*tp->t_oproc)(tp); |
596 | |
597 | return 0; |
598 | } |
599 | |
600 | static int |
601 | bcsp_slip_receive(int c, struct tty *tp) |
602 | { |
603 | struct bcsp_softc *sc = tp->t_sc; |
604 | struct mbuf *m = sc->sc_rxp; |
605 | int discard = 0; |
606 | const char *errstr; |
607 | |
608 | c &= TTY_CHARMASK; |
609 | |
610 | /* If we already started a packet, find the trailing end of it. */ |
611 | if (m) { |
612 | while (m->m_next) |
613 | m = m->m_next; |
614 | |
615 | if (M_TRAILINGSPACE(m) == 0) { |
616 | /* extend mbuf */ |
617 | MGET(m->m_next, M_DONTWAIT, MT_DATA); |
618 | if (m->m_next == NULL) { |
619 | aprint_error_dev(sc->sc_dev, |
620 | "out of memory\n" ); |
621 | sc->sc_stats.err_rx++; |
622 | return 0; /* (lost sync) */ |
623 | } |
624 | |
625 | m = m->m_next; |
626 | m->m_len = 0; |
627 | } |
628 | } else |
629 | if (c != BCSP_SLIP_PKTSTART) { |
630 | discard = 1; |
631 | errstr = "not sync" ; |
632 | goto discarded; |
633 | } |
634 | |
635 | switch (c) { |
636 | case BCSP_SLIP_PKTSTART /* or _PKTEND */: |
637 | if (m == NULL) { |
638 | /* BCSP_SLIP_PKTSTART */ |
639 | |
640 | DPRINTFN(4, ("%s: slip receive start\n" , |
641 | device_xname(sc->sc_dev))); |
642 | |
643 | /* new packet */ |
644 | MGETHDR(m, M_DONTWAIT, MT_DATA); |
645 | if (m == NULL) { |
646 | aprint_error_dev(sc->sc_dev, |
647 | "out of memory\n" ); |
648 | sc->sc_stats.err_rx++; |
649 | return 0; /* (lost sync) */ |
650 | } |
651 | |
652 | sc->sc_rxp = m; |
653 | m->m_pkthdr.len = m->m_len = 0; |
654 | sc->sc_slip_rxexp = 0; |
655 | } else { |
656 | /* BCSP_SLIP_PKTEND */ |
657 | |
658 | if (m == sc->sc_rxp && m->m_len == 0) { |
659 | DPRINTFN(4, ("%s: resynchronises\n" , |
660 | device_xname(sc->sc_dev))); |
661 | |
662 | sc->sc_stats.byte_rx++; |
663 | return 0; |
664 | } |
665 | |
666 | DPRINTFN(4, ("%s%s: slip receive end\n" , |
667 | (m->m_len % 16 != 0) ? "\n" : "" , |
668 | device_xname(sc->sc_dev))); |
669 | |
670 | bcsp_pktintegrity_receive(sc, sc->sc_rxp); |
671 | sc->sc_rxp = NULL; |
672 | sc->sc_slip_rxexp = BCSP_SLIP_PKTSTART; |
673 | } |
674 | sc->sc_stats.byte_rx++; |
675 | return 0; |
676 | |
677 | case BCSP_SLIP_ESCAPE: |
678 | |
679 | DPRINTFN(4, (" esc" )); |
680 | |
681 | if (sc->sc_slip_rxexp == BCSP_SLIP_ESCAPE) { |
682 | discard = 1; |
683 | errstr = "waiting 0xdc or 0xdb" ; |
684 | } else |
685 | sc->sc_slip_rxexp = BCSP_SLIP_ESCAPE; |
686 | break; |
687 | |
688 | default: |
689 | DPRINTFN(4, (" 0x%02x%s" , |
690 | c, (m->m_len % 16 == 15) ? "\n" : "" )); |
691 | |
692 | switch (sc->sc_slip_rxexp) { |
693 | case BCSP_SLIP_PKTSTART: |
694 | discard = 1; |
695 | errstr = "waiting 0xc0" ; |
696 | break; |
697 | |
698 | case BCSP_SLIP_ESCAPE: |
699 | if (c == BCSP_SLIP_ESCAPE_PKTEND) |
700 | mtod(m, uint8_t *)[m->m_len++] = |
701 | BCSP_SLIP_PKTEND; |
702 | else if (c == BCSP_SLIP_ESCAPE_ESCAPE) |
703 | mtod(m, uint8_t *)[m->m_len++] = |
704 | BCSP_SLIP_ESCAPE; |
705 | else { |
706 | discard = 1; |
707 | errstr = "unknown escape" ; |
708 | } |
709 | sc->sc_slip_rxexp = 0; |
710 | break; |
711 | |
712 | default: |
713 | mtod(m, uint8_t *)[m->m_len++] = c; |
714 | } |
715 | sc->sc_rxp->m_pkthdr.len++; |
716 | } |
717 | if (discard) { |
718 | discarded: |
719 | #ifdef BCSP_DEBUG |
720 | DPRINTFN(4, ("%s: receives unexpected byte 0x%02x: %s\n" , |
721 | device_xname(sc->sc_dev), c, errstr)); |
722 | #else |
723 | __USE(errstr); |
724 | #endif |
725 | } |
726 | sc->sc_stats.byte_rx++; |
727 | |
728 | return 0; |
729 | } |
730 | |
731 | |
732 | /* |
733 | * BCSP Packet Integrity Layer functions: |
734 | * handling Payload Length, Checksum, CRC. |
735 | */ |
736 | static void |
737 | bcsp_pktintegrity_transmit(struct bcsp_softc *sc) |
738 | { |
739 | struct mbuf *m = sc->sc_txp; |
740 | bcsp_hdr_t *hdrp = mtod(m, bcsp_hdr_t *); |
741 | int pldlen; |
742 | |
743 | DPRINTFN(3, ("%s: pi transmit\n" , device_xname(sc->sc_dev))); |
744 | |
745 | pldlen = m->m_pkthdr.len - sizeof(bcsp_hdr_t); |
746 | |
747 | if (sc->sc_pi_txcrc) |
748 | hdrp->flags |= BCSP_FLAGS_CRC_PRESENT; |
749 | |
750 | BCSP_SET_PLEN(hdrp, pldlen); |
751 | BCSP_SET_CSUM(hdrp); |
752 | |
753 | if (sc->sc_pi_txcrc) { |
754 | struct mbuf *_m; |
755 | int n = 0; |
756 | uint16_t crc = 0xffff; |
757 | uint8_t *buf; |
758 | |
759 | for (_m = m; _m != NULL; _m = _m->m_next) { |
760 | buf = mtod(_m, uint8_t *); |
761 | for (n = 0; n < _m->m_len; n++) |
762 | bcsp_crc_update(&crc, *(buf + n)); |
763 | } |
764 | crc = htobe16(bcsp_crc_reverse(crc)); |
765 | m_copyback(m, m->m_pkthdr.len, sizeof(crc), &crc); |
766 | } |
767 | |
768 | #ifdef BCSP_DEBUG |
769 | if (bcsp_debug == 4) |
770 | bcsp_packet_print(m); |
771 | #endif |
772 | |
773 | bcsp_slip_transmit(sc->sc_tp); |
774 | } |
775 | |
776 | static void |
777 | bcsp_pktintegrity_receive(struct bcsp_softc *sc, struct mbuf *m) |
778 | { |
779 | bcsp_hdr_t *hdrp = mtod(m, bcsp_hdr_t *); |
780 | u_int pldlen; |
781 | int discard = 0; |
782 | uint16_t crc = 0xffff; |
783 | const char *errstr; |
784 | |
785 | DPRINTFN(3, ("%s: pi receive\n" , device_xname(sc->sc_dev))); |
786 | #ifdef BCSP_DEBUG |
787 | if (bcsp_debug == 4) |
788 | bcsp_packet_print(m); |
789 | #endif |
790 | |
791 | KASSERT(m->m_len >= sizeof(bcsp_hdr_t)); |
792 | |
793 | pldlen = m->m_pkthdr.len - sizeof(bcsp_hdr_t) - |
794 | ((hdrp->flags & BCSP_FLAGS_CRC_PRESENT) ? sizeof(crc) : 0); |
795 | if (pldlen > 0xfff) { |
796 | discard = 1; |
797 | errstr = "Payload Length" ; |
798 | goto discarded; |
799 | } |
800 | if (hdrp->csum != BCSP_GET_CSUM(hdrp)) { |
801 | discard = 1; |
802 | errstr = "Checksum" ; |
803 | goto discarded; |
804 | } |
805 | if (BCSP_GET_PLEN(hdrp) != pldlen) { |
806 | discard = 1; |
807 | errstr = "Payload Length" ; |
808 | goto discarded; |
809 | } |
810 | if (hdrp->flags & BCSP_FLAGS_CRC_PRESENT) { |
811 | struct mbuf *_m; |
812 | int i, n; |
813 | uint16_t crc0; |
814 | uint8_t *buf; |
815 | |
816 | i = 0; |
817 | n = 0; |
818 | for (_m = m; _m != NULL; _m = _m->m_next) { |
819 | buf = mtod(m, uint8_t *); |
820 | for (n = 0; |
821 | n < _m->m_len && i < sizeof(bcsp_hdr_t) + pldlen; |
822 | n++, i++) |
823 | bcsp_crc_update(&crc, *(buf + n)); |
824 | } |
825 | |
826 | m_copydata(_m, n, sizeof(crc0), &crc0); |
827 | if (be16toh(crc0) != bcsp_crc_reverse(crc)) { |
828 | discard = 1; |
829 | errstr = "CRC" ; |
830 | } else |
831 | /* Shaves CRC */ |
832 | m_adj(m, (int)(0 - sizeof(crc))); |
833 | } |
834 | |
835 | if (discard) { |
836 | discarded: |
837 | #ifdef BCSP_DEBUG |
838 | DPRINTFN(3, ("%s: receives unexpected packet: %s\n" , |
839 | device_xname(sc->sc_dev), errstr)); |
840 | #else |
841 | __USE(errstr); |
842 | #endif |
843 | m_freem(m); |
844 | } else |
845 | bcsp_mux_receive(sc, m); |
846 | } |
847 | |
848 | static const uint16_t crctbl[] = { |
849 | 0x0000, 0x1081, 0x2102, 0x3183, |
850 | 0x4204, 0x5285, 0x6306, 0x7387, |
851 | 0x8408, 0x9489, 0xa50a, 0xb58b, |
852 | 0xc60c, 0xd68d, 0xe70e, 0xf78f, |
853 | }; |
854 | |
855 | static void |
856 | bcsp_crc_update(uint16_t *crc, uint8_t d) |
857 | { |
858 | uint16_t reg = *crc; |
859 | |
860 | reg = (reg >> 4) ^ crctbl[(reg ^ d) & 0x000f]; |
861 | reg = (reg >> 4) ^ crctbl[(reg ^ (d >> 4)) & 0x000f]; |
862 | |
863 | *crc = reg; |
864 | } |
865 | |
866 | static uint16_t |
867 | bcsp_crc_reverse(uint16_t crc) |
868 | { |
869 | uint16_t b, rev; |
870 | |
871 | for (b = 0, rev = 0; b < 16; b++) { |
872 | rev = rev << 1; |
873 | rev |= (crc & 1); |
874 | crc = crc >> 1; |
875 | } |
876 | |
877 | return rev; |
878 | } |
879 | |
880 | |
881 | /* |
882 | * BCSP MUX Layer functions |
883 | */ |
884 | static void |
885 | bcsp_mux_transmit(struct bcsp_softc *sc) |
886 | { |
887 | struct mbuf *m; |
888 | bcsp_hdr_t *hdrp; |
889 | |
890 | DPRINTFN(2, ("%s: mux transmit: sc_flags=0x%x, choke=%d" , |
891 | device_xname(sc->sc_dev), sc->sc_flags, sc->sc_mux_choke)); |
892 | |
893 | if (sc->sc_mux_choke) { |
894 | struct mbuf *_m = NULL; |
895 | |
896 | /* In this case, send only Link Establishment packet */ |
897 | for (m = MBUFQ_FIRST(&sc->sc_dgq); m != NULL; |
898 | _m = m, m = MBUFQ_NEXT(m)) { |
899 | hdrp = mtod(m, bcsp_hdr_t *); |
900 | if (hdrp->ident == BCSP_CHANNEL_LE) { |
901 | if (m == MBUFQ_FIRST(&sc->sc_dgq)) |
902 | MBUFQ_DEQUEUE(&sc->sc_dgq, m); |
903 | else { |
904 | if (m->m_nextpkt == NULL) |
905 | sc->sc_dgq.mq_last = |
906 | &_m->m_nextpkt; |
907 | _m->m_nextpkt = m->m_nextpkt; |
908 | m->m_nextpkt = NULL; |
909 | } |
910 | goto transmit; |
911 | } |
912 | } |
913 | DPRINTFN(2, ("\n" )); |
914 | return; |
915 | } |
916 | |
917 | /* |
918 | * The MUX Layer always gives priority to packets from the Datagram |
919 | * Queue Layer over the Sequencing Layer. |
920 | */ |
921 | if (MBUFQ_FIRST(&sc->sc_dgq)) { |
922 | MBUFQ_DEQUEUE(&sc->sc_dgq, m); |
923 | goto transmit; |
924 | } |
925 | if (MBUFQ_FIRST(&sc->sc_seqq)) { |
926 | MBUFQ_DEQUEUE(&sc->sc_seqq, m); |
927 | hdrp = mtod(m, bcsp_hdr_t *); |
928 | hdrp->flags |= BCSP_FLAGS_PROTOCOL_REL; /* Reliable */ |
929 | goto transmit; |
930 | } |
931 | bcsp_start(sc); |
932 | if (sc->sc_mux_send_ack == true) { |
933 | m = bcsp_create_ackpkt(); |
934 | if (m != NULL) |
935 | goto transmit; |
936 | aprint_error_dev(sc->sc_dev, "out of memory\n" ); |
937 | sc->sc_stats.err_tx++; |
938 | } |
939 | |
940 | /* Nothing to send */ |
941 | DPRINTFN(2, ("\n" )); |
942 | return; |
943 | |
944 | transmit: |
945 | DPRINTFN(2, (", txack=%d, send_ack=%d\n" , |
946 | bcsp_get_txack(sc), sc->sc_mux_send_ack)); |
947 | |
948 | hdrp = mtod(m, bcsp_hdr_t *); |
949 | hdrp->flags |= |
950 | (bcsp_get_txack(sc) << BCSP_FLAGS_ACK_SHIFT) & BCSP_FLAGS_ACK_MASK; |
951 | if (sc->sc_mux_send_ack == true) |
952 | sc->sc_mux_send_ack = false; |
953 | |
954 | #ifdef BCSP_DEBUG |
955 | if (bcsp_debug == 3) |
956 | bcsp_packet_print(m); |
957 | #endif |
958 | |
959 | sc->sc_txp = m; |
960 | bcsp_pktintegrity_transmit(sc); |
961 | } |
962 | |
963 | static void |
964 | bcsp_mux_receive(struct bcsp_softc *sc, struct mbuf *m) |
965 | { |
966 | bcsp_hdr_t *hdrp = mtod(m, bcsp_hdr_t *); |
967 | const u_int rxack = BCSP_FLAGS_ACK(hdrp->flags); |
968 | |
969 | DPRINTFN(2, ("%s: mux receive: flags=0x%x, ident=%d, rxack=%d\n" , |
970 | device_xname(sc->sc_dev), hdrp->flags, hdrp->ident, rxack)); |
971 | #ifdef BCSP_DEBUG |
972 | if (bcsp_debug == 3) |
973 | bcsp_packet_print(m); |
974 | #endif |
975 | |
976 | bcsp_signal_rxack(sc, rxack); |
977 | |
978 | microtime(&sc->sc_mux_lastrx); |
979 | |
980 | /* if the Ack Packet received then discard */ |
981 | if (BCSP_FLAGS_SEQ(hdrp->flags) == 0 && |
982 | hdrp->ident == BCSP_IDENT_ACKPKT && |
983 | BCSP_GET_PLEN(hdrp) == 0) { |
984 | m_freem(m); |
985 | return; |
986 | } |
987 | |
988 | if (hdrp->flags & BCSP_FLAGS_PROTOCOL_REL) |
989 | bcsp_sequencing_receive(sc, m); |
990 | else |
991 | bcsp_datagramq_receive(sc, m); |
992 | } |
993 | |
994 | static __inline void |
995 | bcsp_send_ack_command(struct bcsp_softc *sc) |
996 | { |
997 | |
998 | DPRINTFN(2, ("%s: mux send_ack_command\n" , device_xname(sc->sc_dev))); |
999 | |
1000 | sc->sc_mux_send_ack = true; |
1001 | } |
1002 | |
1003 | static __inline struct mbuf * |
1004 | bcsp_create_ackpkt(void) |
1005 | { |
1006 | struct mbuf *m; |
1007 | bcsp_hdr_t *hdrp; |
1008 | |
1009 | MGETHDR(m, M_DONTWAIT, MT_DATA); |
1010 | if (m != NULL) { |
1011 | m->m_pkthdr.len = m->m_len = sizeof(bcsp_hdr_t); |
1012 | hdrp = mtod(m, bcsp_hdr_t *); |
1013 | /* |
1014 | * An Ack Packet has the following fields: |
1015 | * Ack Field: txack (not set yet) |
1016 | * Seq Field: 0 |
1017 | * Protocol Identifier Field: 0 |
1018 | * Protocol Type Field: Any value |
1019 | * Payload Length Field: 0 |
1020 | */ |
1021 | memset(hdrp, 0, sizeof(bcsp_hdr_t)); |
1022 | } |
1023 | return m; |
1024 | } |
1025 | |
1026 | static __inline void |
1027 | bcsp_set_choke(struct bcsp_softc *sc, bool choke) |
1028 | { |
1029 | |
1030 | DPRINTFN(2, ("%s: mux set choke=%d\n" , device_xname(sc->sc_dev), choke)); |
1031 | |
1032 | sc->sc_mux_choke = choke; |
1033 | } |
1034 | |
1035 | |
1036 | /* |
1037 | * BCSP Sequencing Layer functions |
1038 | */ |
1039 | static void |
1040 | bcsp_sequencing_receive(struct bcsp_softc *sc, struct mbuf *m) |
1041 | { |
1042 | bcsp_hdr_t hdr; |
1043 | uint32_t rxseq; |
1044 | |
1045 | m_copydata(m, 0, sizeof(bcsp_hdr_t), &hdr); |
1046 | rxseq = BCSP_FLAGS_SEQ(hdr.flags); |
1047 | |
1048 | DPRINTFN(1, ("%s: seq receive: rxseq=%d, expected %d\n" , |
1049 | device_xname(sc->sc_dev), rxseq, sc->sc_seq_expected_rxseq)); |
1050 | #ifdef BCSP_DEBUG |
1051 | if (bcsp_debug == 2) |
1052 | bcsp_packet_print(m); |
1053 | #endif |
1054 | |
1055 | /* |
1056 | * We remove the header of BCSP and add the 'uint8_t type' of |
1057 | * hci_*_hdr_t to the head. |
1058 | */ |
1059 | m_adj(m, sizeof(bcsp_hdr_t) - sizeof(uint8_t)); |
1060 | |
1061 | if (rxseq != sc->sc_seq_expected_rxseq) { |
1062 | m_freem(m); |
1063 | |
1064 | /* send ack packet, if needly */ |
1065 | bcsp_mux_transmit(sc); |
1066 | |
1067 | return; |
1068 | } |
1069 | |
1070 | switch (hdr.ident) { |
1071 | case BCSP_CHANNEL_HCI_CMDEVT: |
1072 | *(mtod(m, uint8_t *)) = HCI_EVENT_PKT; |
1073 | if (!hci_input_event(sc->sc_unit, m)) |
1074 | sc->sc_stats.err_rx++; |
1075 | |
1076 | sc->sc_stats.evt_rx++; |
1077 | break; |
1078 | |
1079 | case BCSP_CHANNEL_HCI_ACL: |
1080 | *(mtod(m, uint8_t *)) = HCI_ACL_DATA_PKT; |
1081 | if (!hci_input_acl(sc->sc_unit, m)) |
1082 | sc->sc_stats.err_rx++; |
1083 | |
1084 | sc->sc_stats.acl_rx++; |
1085 | break; |
1086 | |
1087 | case BCSP_CHANNEL_HCI_SCO: |
1088 | *(mtod(m, uint8_t *)) = HCI_SCO_DATA_PKT; |
1089 | if (!hci_input_sco(sc->sc_unit, m)) |
1090 | sc->sc_stats.err_rx++; |
1091 | |
1092 | sc->sc_stats.sco_rx++; |
1093 | break; |
1094 | |
1095 | case BCSP_CHANNEL_HQ: |
1096 | case BCSP_CHANNEL_DEVMGT: |
1097 | case BCSP_CHANNEL_L2CAP: |
1098 | case BCSP_CHANNEL_RFCOMM: |
1099 | case BCSP_CHANNEL_SDP: |
1100 | case BCSP_CHANNEL_DFU: |
1101 | case BCSP_CHANNEL_VM: |
1102 | default: |
1103 | aprint_error_dev(sc->sc_dev, |
1104 | "received reliable packet with not support channel %d\n" , |
1105 | hdr.ident); |
1106 | m_freem(m); |
1107 | break; |
1108 | } |
1109 | |
1110 | sc->sc_seq_expected_rxseq = |
1111 | (sc->sc_seq_expected_rxseq + 1) & BCSP_FLAGS_SEQ_MASK; |
1112 | sc->sc_seq_txack = sc->sc_seq_expected_rxseq; |
1113 | bcsp_send_ack_command(sc); |
1114 | } |
1115 | |
1116 | static bool |
1117 | bcsp_tx_reliable_pkt(struct bcsp_softc *sc, struct mbuf *m, u_int protocol_id) |
1118 | { |
1119 | bcsp_hdr_t *hdrp; |
1120 | struct mbuf *_m; |
1121 | u_int pldlen; |
1122 | int s; |
1123 | |
1124 | DPRINTFN(1, ("%s: seq transmit:" |
1125 | "protocol_id=%d, winspace=%d, txseq=%d\n" , device_xname(sc->sc_dev), |
1126 | protocol_id, sc->sc_seq_winspace, sc->sc_seq_txseq)); |
1127 | |
1128 | for (pldlen = 0, _m = m; _m != NULL; _m = _m->m_next) { |
1129 | if (_m->m_len < 0) |
1130 | goto out; |
1131 | pldlen += _m->m_len; |
1132 | } |
1133 | if (pldlen > 0xfff) |
1134 | goto out; |
1135 | if (protocol_id == BCSP_IDENT_ACKPKT || protocol_id > 15) |
1136 | goto out; |
1137 | |
1138 | if (sc->sc_seq_winspace == 0) |
1139 | goto out; |
1140 | |
1141 | M_PREPEND(m, sizeof(bcsp_hdr_t), M_DONTWAIT); |
1142 | if (m == NULL) { |
1143 | aprint_error_dev(sc->sc_dev, "out of memory\n" ); |
1144 | return false; |
1145 | } |
1146 | KASSERT(m->m_len >= sizeof(bcsp_hdr_t)); |
1147 | |
1148 | hdrp = mtod(m, bcsp_hdr_t *); |
1149 | memset(hdrp, 0, sizeof(bcsp_hdr_t)); |
1150 | hdrp->flags |= sc->sc_seq_txseq; |
1151 | hdrp->ident = protocol_id; |
1152 | |
1153 | callout_schedule(&sc->sc_seq_timer, sc->sc_seq_timeout); |
1154 | |
1155 | s = splserial(); |
1156 | MBUFQ_ENQUEUE(&sc->sc_seqq, m); |
1157 | splx(s); |
1158 | sc->sc_transmit_callback = bcsp_reliabletx_callback; |
1159 | |
1160 | #ifdef BCSP_DEBUG |
1161 | if (bcsp_debug == 2) |
1162 | bcsp_packet_print(m); |
1163 | #endif |
1164 | |
1165 | sc->sc_seq_txseq = (sc->sc_seq_txseq + 1) & BCSP_FLAGS_SEQ_MASK; |
1166 | sc->sc_seq_winspace--; |
1167 | _m = m_copym(m, 0, M_COPYALL, M_DONTWAIT); |
1168 | if (_m == NULL) { |
1169 | aprint_error_dev(sc->sc_dev, "out of memory\n" ); |
1170 | goto out; |
1171 | } |
1172 | MBUFQ_ENQUEUE(&sc->sc_seq_retryq, _m); |
1173 | bcsp_mux_transmit(sc); |
1174 | |
1175 | return true; |
1176 | out: |
1177 | m_freem(m); |
1178 | return false; |
1179 | } |
1180 | |
1181 | #if 0 |
1182 | static bool |
1183 | bcsp_rx_reliable_pkt(struct bcsp_softc *sc, struct mbuf *m, u_int protocol_id) |
1184 | { |
1185 | |
1186 | return false; |
1187 | } |
1188 | |
1189 | /* XXXX: I can't understand meaning this function... */ |
1190 | static __inline void |
1191 | bcsp_link_failed(struct bcsp_softc *sc) |
1192 | { |
1193 | |
1194 | return (sc->sc_seq_retries >= sc->sc_seq_retry_limit); |
1195 | } |
1196 | #endif |
1197 | |
1198 | static __inline u_int |
1199 | bcsp_get_txack(struct bcsp_softc *sc) |
1200 | { |
1201 | |
1202 | return sc->sc_seq_txack; |
1203 | } |
1204 | |
1205 | static void |
1206 | bcsp_signal_rxack(struct bcsp_softc *sc, uint32_t rxack) |
1207 | { |
1208 | bcsp_hdr_t *hdrp; |
1209 | struct mbuf *m; |
1210 | uint32_t seqno = (rxack - 1) & BCSP_FLAGS_SEQ_MASK; |
1211 | int s; |
1212 | |
1213 | DPRINTFN(1, ("%s: seq signal rxack: rxack=%d\n" , |
1214 | device_xname(sc->sc_dev), rxack)); |
1215 | |
1216 | s = splserial(); |
1217 | m = MBUFQ_FIRST(&sc->sc_seq_retryq); |
1218 | while (m != NULL) { |
1219 | hdrp = mtod(m, bcsp_hdr_t *); |
1220 | if (BCSP_FLAGS_SEQ(hdrp->flags) == seqno) { |
1221 | struct mbuf *m0; |
1222 | |
1223 | for (m0 = MBUFQ_FIRST(&sc->sc_seq_retryq); |
1224 | m0 != MBUFQ_NEXT(m); |
1225 | m0 = MBUFQ_FIRST(&sc->sc_seq_retryq)) { |
1226 | MBUFQ_DEQUEUE(&sc->sc_seq_retryq, m0); |
1227 | m_freem(m0); |
1228 | sc->sc_seq_winspace++; |
1229 | } |
1230 | break; |
1231 | } |
1232 | m = MBUFQ_NEXT(m); |
1233 | } |
1234 | splx(s); |
1235 | sc->sc_seq_retries = 0; |
1236 | |
1237 | if (sc->sc_seq_winspace == sc->sc_seq_winsize) |
1238 | callout_stop(&sc->sc_seq_timer); |
1239 | else |
1240 | callout_schedule(&sc->sc_seq_timer, sc->sc_seq_timeout); |
1241 | } |
1242 | |
1243 | static void |
1244 | bcsp_reliabletx_callback(struct bcsp_softc *sc, struct mbuf *m) |
1245 | { |
1246 | |
1247 | m_freem(m); |
1248 | } |
1249 | |
1250 | static void |
1251 | bcsp_timer_timeout(void *arg) |
1252 | { |
1253 | struct bcsp_softc *sc = arg; |
1254 | struct mbuf *m, *_m; |
1255 | int s, i = 0; |
1256 | |
1257 | DPRINTFN(1, ("%s: seq timeout: retries=%d\n" , |
1258 | device_xname(sc->sc_dev), sc->sc_seq_retries)); |
1259 | |
1260 | s = splserial(); |
1261 | for (m = MBUFQ_FIRST(&sc->sc_seq_retryq); m != NULL; |
1262 | m = MBUFQ_NEXT(m)) { |
1263 | _m = m_copym(m, 0, M_COPYALL, M_DONTWAIT); |
1264 | if (_m == NULL) { |
1265 | aprint_error_dev(sc->sc_dev, "out of memory\n" ); |
1266 | return; |
1267 | } |
1268 | MBUFQ_ENQUEUE(&sc->sc_seqq, _m); |
1269 | i++; |
1270 | } |
1271 | splx(s); |
1272 | |
1273 | if (i != 0) { |
1274 | if (++sc->sc_seq_retries < sc->sc_seq_retry_limit) |
1275 | callout_schedule(&sc->sc_seq_timer, sc->sc_seq_timeout); |
1276 | else { |
1277 | aprint_error_dev(sc->sc_dev, |
1278 | "reached the retry limit." |
1279 | " restart the link-establishment\n" ); |
1280 | bcsp_sequencing_reset(sc); |
1281 | bcsp_start_le(sc); |
1282 | return; |
1283 | } |
1284 | } |
1285 | bcsp_mux_transmit(sc); |
1286 | } |
1287 | |
1288 | static void |
1289 | bcsp_sequencing_reset(struct bcsp_softc *sc) |
1290 | { |
1291 | int s; |
1292 | |
1293 | s = splserial(); |
1294 | MBUFQ_DRAIN(&sc->sc_seqq); |
1295 | MBUFQ_DRAIN(&sc->sc_seq_retryq); |
1296 | splx(s); |
1297 | |
1298 | |
1299 | sc->sc_seq_txseq = 0; |
1300 | sc->sc_seq_txack = 0; |
1301 | sc->sc_seq_winspace = sc->sc_seq_winsize; |
1302 | sc->sc_seq_retries = 0; |
1303 | callout_stop(&sc->sc_seq_timer); |
1304 | |
1305 | sc->sc_mux_send_ack = false; |
1306 | |
1307 | /* XXXX: expected_rxseq should be set by MUX Layer */ |
1308 | sc->sc_seq_expected_rxseq = 0; |
1309 | } |
1310 | |
1311 | |
1312 | /* |
1313 | * BCSP Datagram Queue Layer functions |
1314 | */ |
1315 | static void |
1316 | bcsp_datagramq_receive(struct bcsp_softc *sc, struct mbuf *m) |
1317 | { |
1318 | bcsp_hdr_t hdr; |
1319 | |
1320 | DPRINTFN(1, ("%s: dgq receive\n" , device_xname(sc->sc_dev))); |
1321 | #ifdef BCSP_DEBUG |
1322 | if (bcsp_debug == 2) |
1323 | bcsp_packet_print(m); |
1324 | #endif |
1325 | |
1326 | m_copydata(m, 0, sizeof(bcsp_hdr_t), &hdr); |
1327 | |
1328 | switch (hdr.ident) { |
1329 | case BCSP_CHANNEL_LE: |
1330 | m_adj(m, sizeof(bcsp_hdr_t)); |
1331 | bcsp_input_le(sc, m); |
1332 | break; |
1333 | |
1334 | case BCSP_CHANNEL_HCI_SCO: |
1335 | /* |
1336 | * We remove the header of BCSP and add the 'uint8_t type' of |
1337 | * hci_scodata_hdr_t to the head. |
1338 | */ |
1339 | m_adj(m, sizeof(bcsp_hdr_t) - sizeof(uint8_t)); |
1340 | *(mtod(m, uint8_t *)) = HCI_SCO_DATA_PKT; |
1341 | if (!hci_input_sco(sc->sc_unit, m)) |
1342 | sc->sc_stats.err_rx++; |
1343 | |
1344 | sc->sc_stats.sco_rx++; |
1345 | break; |
1346 | |
1347 | default: |
1348 | aprint_error_dev(sc->sc_dev, |
1349 | "received unreliable packet with not support channel %d\n" , |
1350 | hdr.ident); |
1351 | m_freem(m); |
1352 | break; |
1353 | } |
1354 | } |
1355 | |
1356 | static bool |
1357 | bcsp_tx_unreliable_pkt(struct bcsp_softc *sc, struct mbuf *m, u_int protocol_id) |
1358 | { |
1359 | bcsp_hdr_t *hdrp; |
1360 | struct mbuf *_m; |
1361 | u_int pldlen; |
1362 | int s; |
1363 | |
1364 | DPRINTFN(1, ("%s: dgq transmit: protocol_id=%d," , |
1365 | device_xname(sc->sc_dev), protocol_id)); |
1366 | |
1367 | for (pldlen = 0, _m = m; _m != NULL; _m = m->m_next) { |
1368 | if (_m->m_len < 0) |
1369 | goto out; |
1370 | pldlen += _m->m_len; |
1371 | } |
1372 | DPRINTFN(1, (" pldlen=%d\n" , pldlen)); |
1373 | if (pldlen > 0xfff) |
1374 | goto out; |
1375 | if (protocol_id == BCSP_IDENT_ACKPKT || protocol_id > 15) |
1376 | goto out; |
1377 | |
1378 | M_PREPEND(m, sizeof(bcsp_hdr_t), M_DONTWAIT); |
1379 | if (m == NULL) { |
1380 | aprint_error_dev(sc->sc_dev, "out of memory\n" ); |
1381 | return false; |
1382 | } |
1383 | KASSERT(m->m_len >= sizeof(bcsp_hdr_t)); |
1384 | |
1385 | hdrp = mtod(m, bcsp_hdr_t *); |
1386 | memset(hdrp, 0, sizeof(bcsp_hdr_t)); |
1387 | hdrp->ident = protocol_id; |
1388 | |
1389 | s = splserial(); |
1390 | MBUFQ_ENQUEUE(&sc->sc_dgq, m); |
1391 | splx(s); |
1392 | sc->sc_transmit_callback = bcsp_unreliabletx_callback; |
1393 | |
1394 | #ifdef BCSP_DEBUG |
1395 | if (bcsp_debug == 2) |
1396 | bcsp_packet_print(m); |
1397 | #endif |
1398 | |
1399 | bcsp_mux_transmit(sc); |
1400 | |
1401 | return true; |
1402 | out: |
1403 | m_freem(m); |
1404 | return false; |
1405 | } |
1406 | |
1407 | #if 0 |
1408 | static bool |
1409 | bcsp_rx_unreliable_pkt(struct bcsp_softc *sc, struct mbuf *m, u_int protocol_id) |
1410 | { |
1411 | |
1412 | return false; |
1413 | } |
1414 | #endif |
1415 | |
1416 | static void |
1417 | bcsp_unreliabletx_callback(struct bcsp_softc *sc, struct mbuf *m) |
1418 | { |
1419 | |
1420 | if (M_GETCTX(m, void *) == NULL) |
1421 | m_freem(m); |
1422 | else if (!hci_complete_sco(sc->sc_unit, m)) |
1423 | sc->sc_stats.err_tx++; |
1424 | } |
1425 | |
1426 | |
1427 | /* |
1428 | * BlueCore Link Establishment Protocol functions |
1429 | */ |
1430 | static const uint8_t sync[] = BCSP_LE_SYNC; |
1431 | static const uint8_t syncresp[] = BCSP_LE_SYNCRESP; |
1432 | static const uint8_t conf[] = BCSP_LE_CONF; |
1433 | static const uint8_t confresp[] = BCSP_LE_CONFRESP; |
1434 | |
1435 | static int |
1436 | bcsp_start_le(struct bcsp_softc *sc) |
1437 | { |
1438 | |
1439 | DPRINTF(("%s: start link-establish\n" , device_xname(sc->sc_dev))); |
1440 | |
1441 | bcsp_set_choke(sc, true); |
1442 | |
1443 | if (!sc->sc_le_muzzled) { |
1444 | struct mbuf *m; |
1445 | |
1446 | m = m_gethdr(M_WAIT, MT_DATA); |
1447 | m->m_pkthdr.len = m->m_len = 0; |
1448 | m_copyback(m, 0, sizeof(sync), sync); |
1449 | if (!bcsp_tx_unreliable_pkt(sc, m, BCSP_CHANNEL_LE)) { |
1450 | aprint_error_dev(sc->sc_dev, |
1451 | "le-packet transmit failed\n" ); |
1452 | return EINVAL; |
1453 | } |
1454 | } |
1455 | callout_schedule(&sc->sc_le_timer, BCSP_LE_TSHY_TIMEOUT); |
1456 | |
1457 | sc->sc_le_state = le_state_shy; |
1458 | return 0; |
1459 | } |
1460 | |
1461 | static void |
1462 | bcsp_terminate_le(struct bcsp_softc *sc) |
1463 | { |
1464 | struct mbuf *m; |
1465 | |
1466 | /* terminate link-establishment */ |
1467 | callout_stop(&sc->sc_le_timer); |
1468 | bcsp_set_choke(sc, true); |
1469 | MGETHDR(m, M_DONTWAIT, MT_DATA); |
1470 | if (m == NULL) |
1471 | aprint_error_dev(sc->sc_dev, "out of memory\n" ); |
1472 | else { |
1473 | /* length of le packets is 4 */ |
1474 | m->m_pkthdr.len = m->m_len = 0; |
1475 | m_copyback(m, 0, sizeof(sync), sync); |
1476 | if (!bcsp_tx_unreliable_pkt(sc, m, BCSP_CHANNEL_LE)) |
1477 | aprint_error_dev(sc->sc_dev, |
1478 | "link-establishment terminations failed\n" ); |
1479 | } |
1480 | } |
1481 | |
1482 | static void |
1483 | bcsp_input_le(struct bcsp_softc *sc, struct mbuf *m) |
1484 | { |
1485 | uint32_t *rcvpkt; |
1486 | int i; |
1487 | const uint8_t *rplypkt; |
1488 | static struct { |
1489 | const char *type; |
1490 | const uint8_t *datap; |
1491 | } pkt[] = { |
1492 | { "sync" , sync }, |
1493 | { "sync-resp" , syncresp }, |
1494 | { "conf" , conf }, |
1495 | { "conf-resp" , confresp }, |
1496 | |
1497 | { NULL, 0 } |
1498 | }; |
1499 | |
1500 | DPRINTFN(0, ("%s: le input: state %d, muzzled %d\n" , |
1501 | device_xname(sc->sc_dev), sc->sc_le_state, sc->sc_le_muzzled)); |
1502 | #ifdef BCSP_DEBUG |
1503 | if (bcsp_debug == 1) |
1504 | bcsp_packet_print(m); |
1505 | #endif |
1506 | |
1507 | rcvpkt = mtod(m, uint32_t *); |
1508 | i = 0; |
1509 | |
1510 | /* length of le packets is 4 */ |
1511 | if (m->m_len == sizeof(uint32_t)) |
1512 | for (i = 0; pkt[i].type != NULL; i++) |
1513 | if (*(const uint32_t *)pkt[i].datap == *rcvpkt) |
1514 | break; |
1515 | if (m->m_len != sizeof(uint32_t) || pkt[i].type == NULL) { |
1516 | aprint_error_dev(sc->sc_dev, "received unknown packet\n" ); |
1517 | m_freem(m); |
1518 | return; |
1519 | } |
1520 | |
1521 | rplypkt = NULL; |
1522 | switch (sc->sc_le_state) { |
1523 | case le_state_shy: |
1524 | if (*rcvpkt == *(const uint32_t *)sync) { |
1525 | sc->sc_le_muzzled = false; |
1526 | rplypkt = syncresp; |
1527 | } else if (*rcvpkt == *(const uint32_t *)syncresp) { |
1528 | DPRINTF(("%s: state change to curious\n" , |
1529 | device_xname(sc->sc_dev))); |
1530 | |
1531 | rplypkt = conf; |
1532 | callout_schedule(&sc->sc_le_timer, |
1533 | BCSP_LE_TCONF_TIMEOUT); |
1534 | sc->sc_le_state = le_state_curious; |
1535 | } else |
1536 | aprint_error_dev(sc->sc_dev, |
1537 | "received an unknown packet at shy\n" ); |
1538 | break; |
1539 | |
1540 | case le_state_curious: |
1541 | if (*rcvpkt == *(const uint32_t *)sync) |
1542 | rplypkt = syncresp; |
1543 | else if (*rcvpkt == *(const uint32_t *)conf) |
1544 | rplypkt = confresp; |
1545 | else if (*rcvpkt == *(const uint32_t *)confresp) { |
1546 | DPRINTF(("%s: state change to garrulous:\n" , |
1547 | device_xname(sc->sc_dev))); |
1548 | |
1549 | bcsp_set_choke(sc, false); |
1550 | callout_stop(&sc->sc_le_timer); |
1551 | sc->sc_le_state = le_state_garrulous; |
1552 | } else |
1553 | aprint_error_dev(sc->sc_dev, |
1554 | "received unknown packet at curious\n" ); |
1555 | break; |
1556 | |
1557 | case le_state_garrulous: |
1558 | if (*rcvpkt == *(const uint32_t *)conf) |
1559 | rplypkt = confresp; |
1560 | else if (*rcvpkt == *(const uint32_t *)sync) { |
1561 | /* XXXXX */ |
1562 | aprint_error_dev(sc->sc_dev, |
1563 | "received sync! peer to reset?\n" ); |
1564 | |
1565 | bcsp_sequencing_reset(sc); |
1566 | rplypkt = sync; |
1567 | sc->sc_le_state = le_state_shy; |
1568 | } else |
1569 | aprint_error_dev(sc->sc_dev, |
1570 | "received unknown packet at garrulous\n" ); |
1571 | break; |
1572 | } |
1573 | |
1574 | m_freem(m); |
1575 | |
1576 | if (rplypkt != NULL) { |
1577 | MGETHDR(m, M_DONTWAIT, MT_DATA); |
1578 | if (m == NULL) |
1579 | aprint_error_dev(sc->sc_dev, "out of memory\n" ); |
1580 | else { |
1581 | /* length of le packets is 4 */ |
1582 | m->m_pkthdr.len = m->m_len = 0; |
1583 | m_copyback(m, 0, 4, rplypkt); |
1584 | if (!bcsp_tx_unreliable_pkt(sc, m, BCSP_CHANNEL_LE)) |
1585 | aprint_error_dev(sc->sc_dev, |
1586 | "le-packet transmit failed\n" ); |
1587 | } |
1588 | } |
1589 | } |
1590 | |
1591 | static void |
1592 | bcsp_le_timeout(void *arg) |
1593 | { |
1594 | struct bcsp_softc *sc = arg; |
1595 | struct mbuf *m; |
1596 | int timeout; |
1597 | const uint8_t *sndpkt = NULL; |
1598 | |
1599 | DPRINTFN(0, ("%s: le timeout: state %d, muzzled %d\n" , |
1600 | device_xname(sc->sc_dev), sc->sc_le_state, sc->sc_le_muzzled)); |
1601 | |
1602 | switch (sc->sc_le_state) { |
1603 | case le_state_shy: |
1604 | if (!sc->sc_le_muzzled) |
1605 | sndpkt = sync; |
1606 | timeout = BCSP_LE_TSHY_TIMEOUT; |
1607 | break; |
1608 | |
1609 | case le_state_curious: |
1610 | sndpkt = conf; |
1611 | timeout = BCSP_LE_TCONF_TIMEOUT; |
1612 | break; |
1613 | |
1614 | default: |
1615 | aprint_error_dev(sc->sc_dev, |
1616 | "timeout happen at unknown state %d\n" , sc->sc_le_state); |
1617 | return; |
1618 | } |
1619 | |
1620 | if (sndpkt != NULL) { |
1621 | MGETHDR(m, M_DONTWAIT, MT_DATA); |
1622 | if (m == NULL) |
1623 | aprint_error_dev(sc->sc_dev, "out of memory\n" ); |
1624 | else { |
1625 | /* length of le packets is 4 */ |
1626 | m->m_pkthdr.len = m->m_len = 0; |
1627 | m_copyback(m, 0, 4, sndpkt); |
1628 | if (!bcsp_tx_unreliable_pkt(sc, m, BCSP_CHANNEL_LE)) |
1629 | aprint_error_dev(sc->sc_dev, |
1630 | "le-packet transmit failed\n" ); |
1631 | } |
1632 | } |
1633 | |
1634 | callout_schedule(&sc->sc_le_timer, timeout); |
1635 | } |
1636 | |
1637 | |
1638 | /* |
1639 | * BlueCore Serial Protocol functions. |
1640 | */ |
1641 | static int |
1642 | bcsp_enable(device_t self) |
1643 | { |
1644 | struct bcsp_softc *sc = device_private(self); |
1645 | int s; |
1646 | |
1647 | if (sc->sc_flags & BCSP_ENABLED) |
1648 | return 0; |
1649 | |
1650 | s = spltty(); |
1651 | |
1652 | sc->sc_flags |= BCSP_ENABLED; |
1653 | sc->sc_flags &= ~BCSP_XMIT; |
1654 | |
1655 | splx(s); |
1656 | |
1657 | return 0; |
1658 | } |
1659 | |
1660 | static void |
1661 | bcsp_disable(device_t self) |
1662 | { |
1663 | struct bcsp_softc *sc = device_private(self); |
1664 | int s; |
1665 | |
1666 | if ((sc->sc_flags & BCSP_ENABLED) == 0) |
1667 | return; |
1668 | |
1669 | s = spltty(); |
1670 | |
1671 | if (sc->sc_rxp) { |
1672 | m_freem(sc->sc_rxp); |
1673 | sc->sc_rxp = NULL; |
1674 | } |
1675 | |
1676 | if (sc->sc_txp) { |
1677 | m_freem(sc->sc_txp); |
1678 | sc->sc_txp = NULL; |
1679 | } |
1680 | |
1681 | MBUFQ_DRAIN(&sc->sc_cmdq); |
1682 | MBUFQ_DRAIN(&sc->sc_aclq); |
1683 | MBUFQ_DRAIN(&sc->sc_scoq); |
1684 | |
1685 | sc->sc_flags &= ~BCSP_ENABLED; |
1686 | splx(s); |
1687 | } |
1688 | |
1689 | static void |
1690 | bcsp_start(struct bcsp_softc *sc) |
1691 | { |
1692 | struct mbuf *m; |
1693 | |
1694 | KASSERT((sc->sc_flags & BCSP_XMIT) == 0); |
1695 | KASSERT(sc->sc_txp == NULL); |
1696 | |
1697 | if (MBUFQ_FIRST(&sc->sc_aclq)) { |
1698 | MBUFQ_DEQUEUE(&sc->sc_aclq, m); |
1699 | sc->sc_stats.acl_tx++; |
1700 | sc->sc_flags |= BCSP_XMIT; |
1701 | bcsp_tx_reliable_pkt(sc, m, BCSP_CHANNEL_HCI_ACL); |
1702 | } |
1703 | |
1704 | if (MBUFQ_FIRST(&sc->sc_cmdq)) { |
1705 | MBUFQ_DEQUEUE(&sc->sc_cmdq, m); |
1706 | sc->sc_stats.cmd_tx++; |
1707 | sc->sc_flags |= BCSP_XMIT; |
1708 | bcsp_tx_reliable_pkt(sc, m, BCSP_CHANNEL_HCI_CMDEVT); |
1709 | } |
1710 | |
1711 | if (MBUFQ_FIRST(&sc->sc_scoq)) { |
1712 | MBUFQ_DEQUEUE(&sc->sc_scoq, m); |
1713 | sc->sc_stats.sco_tx++; |
1714 | /* XXXX: We can transmit with reliable */ |
1715 | sc->sc_flags |= BCSP_XMIT; |
1716 | bcsp_tx_unreliable_pkt(sc, m, BCSP_CHANNEL_HCI_SCO); |
1717 | } |
1718 | |
1719 | return; |
1720 | } |
1721 | |
1722 | static void |
1723 | bcsp_output_cmd(device_t self, struct mbuf *m) |
1724 | { |
1725 | struct bcsp_softc *sc = device_private(self); |
1726 | int s; |
1727 | |
1728 | KASSERT(sc->sc_flags & BCSP_ENABLED); |
1729 | |
1730 | m_adj(m, sizeof(uint8_t)); |
1731 | M_SETCTX(m, NULL); |
1732 | |
1733 | s = spltty(); |
1734 | MBUFQ_ENQUEUE(&sc->sc_cmdq, m); |
1735 | if ((sc->sc_flags & BCSP_XMIT) == 0) |
1736 | bcsp_start(sc); |
1737 | |
1738 | splx(s); |
1739 | } |
1740 | |
1741 | static void |
1742 | bcsp_output_acl(device_t self, struct mbuf *m) |
1743 | { |
1744 | struct bcsp_softc *sc = device_private(self); |
1745 | int s; |
1746 | |
1747 | KASSERT(sc->sc_flags & BCSP_ENABLED); |
1748 | |
1749 | m_adj(m, sizeof(uint8_t)); |
1750 | M_SETCTX(m, NULL); |
1751 | |
1752 | s = spltty(); |
1753 | MBUFQ_ENQUEUE(&sc->sc_aclq, m); |
1754 | if ((sc->sc_flags & BCSP_XMIT) == 0) |
1755 | bcsp_start(sc); |
1756 | |
1757 | splx(s); |
1758 | } |
1759 | |
1760 | static void |
1761 | bcsp_output_sco(device_t self, struct mbuf *m) |
1762 | { |
1763 | struct bcsp_softc *sc = device_private(self); |
1764 | int s; |
1765 | |
1766 | KASSERT(sc->sc_flags & BCSP_ENABLED); |
1767 | |
1768 | m_adj(m, sizeof(uint8_t)); |
1769 | |
1770 | s = spltty(); |
1771 | MBUFQ_ENQUEUE(&sc->sc_scoq, m); |
1772 | if ((sc->sc_flags & BCSP_XMIT) == 0) |
1773 | bcsp_start(sc); |
1774 | |
1775 | splx(s); |
1776 | } |
1777 | |
1778 | static void |
1779 | bcsp_stats(device_t self, struct bt_stats *dest, int flush) |
1780 | { |
1781 | struct bcsp_softc *sc = device_private(self); |
1782 | int s; |
1783 | |
1784 | s = spltty(); |
1785 | memcpy(dest, &sc->sc_stats, sizeof(struct bt_stats)); |
1786 | |
1787 | if (flush) |
1788 | memset(&sc->sc_stats, 0, sizeof(struct bt_stats)); |
1789 | |
1790 | splx(s); |
1791 | } |
1792 | |
1793 | |
1794 | #ifdef BCSP_DEBUG |
1795 | static void |
1796 | bcsp_packet_print(struct mbuf *m) |
1797 | { |
1798 | int i; |
1799 | uint8_t *p; |
1800 | |
1801 | for ( ; m != NULL; m = m->m_next) { |
1802 | p = mtod(m, uint8_t *); |
1803 | for (i = 0; i < m->m_len; i++) { |
1804 | if (i % 16 == 0) |
1805 | printf(" " ); |
1806 | printf(" %02x" , *(p + i)); |
1807 | if (i % 16 == 15) |
1808 | printf("\n" ); |
1809 | } |
1810 | printf("\n" ); |
1811 | } |
1812 | } |
1813 | #endif |
1814 | |