22
23/*-
24 * Ralink Technology RT2560 chipset driver
25 * http://www.ralinktech.com/
26 */
27
28#include <sys/param.h>
29#include <sys/sysctl.h>
30#include <sys/sockio.h>
31#include <sys/mbuf.h>
32#include <sys/kernel.h>
33#include <sys/socket.h>
34#include <sys/systm.h>
35#include <sys/malloc.h>
36#include <sys/lock.h>
37#include <sys/mutex.h>
38#include <sys/module.h>
39#include <sys/bus.h>
40#include <sys/endian.h>
41
42#include <machine/bus.h>
43#include <machine/resource.h>
44#include <sys/rman.h>
45
46#include <net/bpf.h>
47#include <net/if.h>
48#include <net/if_arp.h>
49#include <net/ethernet.h>
50#include <net/if_dl.h>
51#include <net/if_media.h>
52#include <net/if_types.h>
53
54#include <net80211/ieee80211_var.h>
55#include <net80211/ieee80211_radiotap.h>
56#include <net80211/ieee80211_regdomain.h>
57#include <net80211/ieee80211_ratectl.h>
58
59#include <netinet/in.h>
60#include <netinet/in_systm.h>
61#include <netinet/in_var.h>
62#include <netinet/ip.h>
63#include <netinet/if_ether.h>
64
65#include <dev/ral/rt2560reg.h>
66#include <dev/ral/rt2560var.h>
67
68#define RT2560_RSSI(sc, rssi) \
69 ((rssi) > (RT2560_NOISE_FLOOR + (sc)->rssi_corr) ? \
70 ((rssi) - RT2560_NOISE_FLOOR - (sc)->rssi_corr) : 0)
71
72#define RAL_DEBUG
73#ifdef RAL_DEBUG
74#define DPRINTF(sc, fmt, ...) do { \
75 if (sc->sc_debug > 0) \
76 printf(fmt, __VA_ARGS__); \
77} while (0)
78#define DPRINTFN(sc, n, fmt, ...) do { \
79 if (sc->sc_debug >= (n)) \
80 printf(fmt, __VA_ARGS__); \
81} while (0)
82#else
83#define DPRINTF(sc, fmt, ...)
84#define DPRINTFN(sc, n, fmt, ...)
85#endif
86
87static struct ieee80211vap *rt2560_vap_create(struct ieee80211com *,
88 const char [IFNAMSIZ], int, enum ieee80211_opmode,
89 int, const uint8_t [IEEE80211_ADDR_LEN],
90 const uint8_t [IEEE80211_ADDR_LEN]);
91static void rt2560_vap_delete(struct ieee80211vap *);
92static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int,
93 int);
94static int rt2560_alloc_tx_ring(struct rt2560_softc *,
95 struct rt2560_tx_ring *, int);
96static void rt2560_reset_tx_ring(struct rt2560_softc *,
97 struct rt2560_tx_ring *);
98static void rt2560_free_tx_ring(struct rt2560_softc *,
99 struct rt2560_tx_ring *);
100static int rt2560_alloc_rx_ring(struct rt2560_softc *,
101 struct rt2560_rx_ring *, int);
102static void rt2560_reset_rx_ring(struct rt2560_softc *,
103 struct rt2560_rx_ring *);
104static void rt2560_free_rx_ring(struct rt2560_softc *,
105 struct rt2560_rx_ring *);
106static int rt2560_newstate(struct ieee80211vap *,
107 enum ieee80211_state, int);
108static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t);
109static void rt2560_encryption_intr(struct rt2560_softc *);
110static void rt2560_tx_intr(struct rt2560_softc *);
111static void rt2560_prio_intr(struct rt2560_softc *);
112static void rt2560_decryption_intr(struct rt2560_softc *);
113static void rt2560_rx_intr(struct rt2560_softc *);
114static void rt2560_beacon_update(struct ieee80211vap *, int item);
115static void rt2560_beacon_expire(struct rt2560_softc *);
116static void rt2560_wakeup_expire(struct rt2560_softc *);
117static void rt2560_scan_start(struct ieee80211com *);
118static void rt2560_scan_end(struct ieee80211com *);
119static void rt2560_set_channel(struct ieee80211com *);
120static void rt2560_setup_tx_desc(struct rt2560_softc *,
121 struct rt2560_tx_desc *, uint32_t, int, int, int,
122 bus_addr_t);
123static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *,
124 struct ieee80211_node *);
125static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *,
126 struct ieee80211_node *);
127static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *,
128 struct ieee80211_node *);
129static void rt2560_start_locked(struct ifnet *);
130static void rt2560_start(struct ifnet *);
131static void rt2560_watchdog(void *);
132static int rt2560_ioctl(struct ifnet *, u_long, caddr_t);
133static void rt2560_bbp_write(struct rt2560_softc *, uint8_t,
134 uint8_t);
135static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t);
136static void rt2560_rf_write(struct rt2560_softc *, uint8_t,
137 uint32_t);
138static void rt2560_set_chan(struct rt2560_softc *,
139 struct ieee80211_channel *);
140#if 0
141static void rt2560_disable_rf_tune(struct rt2560_softc *);
142#endif
143static void rt2560_enable_tsf_sync(struct rt2560_softc *);
144static void rt2560_enable_tsf(struct rt2560_softc *);
145static void rt2560_update_plcp(struct rt2560_softc *);
146static void rt2560_update_slot(struct ifnet *);
147static void rt2560_set_basicrates(struct rt2560_softc *,
148 const struct ieee80211_rateset *);
149static void rt2560_update_led(struct rt2560_softc *, int, int);
150static void rt2560_set_bssid(struct rt2560_softc *, const uint8_t *);
151static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *);
152static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *);
153static void rt2560_update_promisc(struct ifnet *);
154static const char *rt2560_get_rf(int);
155static void rt2560_read_config(struct rt2560_softc *);
156static int rt2560_bbp_init(struct rt2560_softc *);
157static void rt2560_set_txantenna(struct rt2560_softc *, int);
158static void rt2560_set_rxantenna(struct rt2560_softc *, int);
159static void rt2560_init_locked(struct rt2560_softc *);
160static void rt2560_init(void *);
161static void rt2560_stop_locked(struct rt2560_softc *);
162static int rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *,
163 const struct ieee80211_bpf_params *);
164
165static const struct {
166 uint32_t reg;
167 uint32_t val;
168} rt2560_def_mac[] = {
169 RT2560_DEF_MAC
170};
171
172static const struct {
173 uint8_t reg;
174 uint8_t val;
175} rt2560_def_bbp[] = {
176 RT2560_DEF_BBP
177};
178
179static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2;
180static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2;
181static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2;
182static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2;
183static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2;
184static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2;
185static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2;
186static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2;
187
188static const struct {
189 uint8_t chan;
190 uint32_t r1, r2, r4;
191} rt2560_rf5222[] = {
192 RT2560_RF5222
193};
194
195int
196rt2560_attach(device_t dev, int id)
197{
198 struct rt2560_softc *sc = device_get_softc(dev);
199 struct ieee80211com *ic;
200 struct ifnet *ifp;
201 int error;
202 uint8_t bands;
203 uint8_t macaddr[IEEE80211_ADDR_LEN];
204
205 sc->sc_dev = dev;
206
207 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
208 MTX_DEF | MTX_RECURSE);
209
210 callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0);
211
212 /* retrieve RT2560 rev. no */
213 sc->asic_rev = RAL_READ(sc, RT2560_CSR0);
214
215 /* retrieve RF rev. no and various other things from EEPROM */
216 rt2560_read_config(sc);
217
218 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n",
219 sc->asic_rev, rt2560_get_rf(sc->rf_rev));
220
221 /*
222 * Allocate Tx and Rx rings.
223 */
224 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT);
225 if (error != 0) {
226 device_printf(sc->sc_dev, "could not allocate Tx ring\n");
227 goto fail1;
228 }
229
230 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT);
231 if (error != 0) {
232 device_printf(sc->sc_dev, "could not allocate ATIM ring\n");
233 goto fail2;
234 }
235
236 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT);
237 if (error != 0) {
238 device_printf(sc->sc_dev, "could not allocate Prio ring\n");
239 goto fail3;
240 }
241
242 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT);
243 if (error != 0) {
244 device_printf(sc->sc_dev, "could not allocate Beacon ring\n");
245 goto fail4;
246 }
247
248 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT);
249 if (error != 0) {
250 device_printf(sc->sc_dev, "could not allocate Rx ring\n");
251 goto fail5;
252 }
253
254 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
255 if (ifp == NULL) {
256 device_printf(sc->sc_dev, "can not if_alloc()\n");
257 goto fail6;
258 }
259 ic = ifp->if_l2com;
260
261 /* retrieve MAC address */
262 rt2560_get_macaddr(sc, macaddr);
263
264 ifp->if_softc = sc;
265 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
266 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
267 ifp->if_init = rt2560_init;
268 ifp->if_ioctl = rt2560_ioctl;
269 ifp->if_start = rt2560_start;
270 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
271 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
272 IFQ_SET_READY(&ifp->if_snd);
273
274 ic->ic_ifp = ifp;
275 ic->ic_opmode = IEEE80211_M_STA;
276 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
277
278 /* set device capabilities */
279 ic->ic_caps =
280 IEEE80211_C_STA /* station mode */
281 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */
282 | IEEE80211_C_HOSTAP /* hostap mode */
283 | IEEE80211_C_MONITOR /* monitor mode */
284 | IEEE80211_C_AHDEMO /* adhoc demo mode */
285 | IEEE80211_C_WDS /* 4-address traffic works */
286 | IEEE80211_C_MBSS /* mesh point link mode */
287 | IEEE80211_C_SHPREAMBLE /* short preamble supported */
288 | IEEE80211_C_SHSLOT /* short slot time supported */
289 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */
290 | IEEE80211_C_BGSCAN /* capable of bg scanning */
291#ifdef notyet
292 | IEEE80211_C_TXFRAG /* handle tx frags */
293#endif
294 ;
295
296 bands = 0;
297 setbit(&bands, IEEE80211_MODE_11B);
298 setbit(&bands, IEEE80211_MODE_11G);
299 if (sc->rf_rev == RT2560_RF_5222)
300 setbit(&bands, IEEE80211_MODE_11A);
301 ieee80211_init_channels(ic, NULL, &bands);
302
303 ieee80211_ifattach(ic, macaddr);
304 ic->ic_raw_xmit = rt2560_raw_xmit;
305 ic->ic_updateslot = rt2560_update_slot;
306 ic->ic_update_promisc = rt2560_update_promisc;
307 ic->ic_scan_start = rt2560_scan_start;
308 ic->ic_scan_end = rt2560_scan_end;
309 ic->ic_set_channel = rt2560_set_channel;
310
311 ic->ic_vap_create = rt2560_vap_create;
312 ic->ic_vap_delete = rt2560_vap_delete;
313
314 ieee80211_radiotap_attach(ic,
315 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
316 RT2560_TX_RADIOTAP_PRESENT,
317 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
318 RT2560_RX_RADIOTAP_PRESENT);
319
320 /*
321 * Add a few sysctl knobs.
322 */
323#ifdef RAL_DEBUG
324 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
325 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
326 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs");
327#endif
328 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
329 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
330 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)");
331
332 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
333 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
334 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)");
335
336 if (bootverbose)
337 ieee80211_announce(ic);
338
339 return 0;
340
341fail6: rt2560_free_rx_ring(sc, &sc->rxq);
342fail5: rt2560_free_tx_ring(sc, &sc->bcnq);
343fail4: rt2560_free_tx_ring(sc, &sc->prioq);
344fail3: rt2560_free_tx_ring(sc, &sc->atimq);
345fail2: rt2560_free_tx_ring(sc, &sc->txq);
346fail1: mtx_destroy(&sc->sc_mtx);
347
348 return ENXIO;
349}
350
351int
352rt2560_detach(void *xsc)
353{
354 struct rt2560_softc *sc = xsc;
355 struct ifnet *ifp = sc->sc_ifp;
356 struct ieee80211com *ic = ifp->if_l2com;
357
358 rt2560_stop(sc);
359
360 ieee80211_ifdetach(ic);
361
362 rt2560_free_tx_ring(sc, &sc->txq);
363 rt2560_free_tx_ring(sc, &sc->atimq);
364 rt2560_free_tx_ring(sc, &sc->prioq);
365 rt2560_free_tx_ring(sc, &sc->bcnq);
366 rt2560_free_rx_ring(sc, &sc->rxq);
367
368 if_free(ifp);
369
370 mtx_destroy(&sc->sc_mtx);
371
372 return 0;
373}
374
375static struct ieee80211vap *
376rt2560_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
377 enum ieee80211_opmode opmode, int flags,
378 const uint8_t bssid[IEEE80211_ADDR_LEN],
379 const uint8_t mac[IEEE80211_ADDR_LEN])
380{
381 struct ifnet *ifp = ic->ic_ifp;
382 struct rt2560_vap *rvp;
383 struct ieee80211vap *vap;
384
385 switch (opmode) {
386 case IEEE80211_M_STA:
387 case IEEE80211_M_IBSS:
388 case IEEE80211_M_AHDEMO:
389 case IEEE80211_M_MONITOR:
390 case IEEE80211_M_HOSTAP:
391 case IEEE80211_M_MBSS:
392 /* XXXRP: TBD */
393 if (!TAILQ_EMPTY(&ic->ic_vaps)) {
394 if_printf(ifp, "only 1 vap supported\n");
395 return NULL;
396 }
397 if (opmode == IEEE80211_M_STA)
398 flags |= IEEE80211_CLONE_NOBEACONS;
399 break;
400 case IEEE80211_M_WDS:
401 if (TAILQ_EMPTY(&ic->ic_vaps) ||
402 ic->ic_opmode != IEEE80211_M_HOSTAP) {
403 if_printf(ifp, "wds only supported in ap mode\n");
404 return NULL;
405 }
406 /*
407 * Silently remove any request for a unique
408 * bssid; WDS vap's always share the local
409 * mac address.
410 */
411 flags &= ~IEEE80211_CLONE_BSSID;
412 break;
413 default:
414 if_printf(ifp, "unknown opmode %d\n", opmode);
415 return NULL;
416 }
417 rvp = (struct rt2560_vap *) malloc(sizeof(struct rt2560_vap),
418 M_80211_VAP, M_NOWAIT | M_ZERO);
419 if (rvp == NULL)
420 return NULL;
421 vap = &rvp->ral_vap;
422 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
423
424 /* override state transition machine */
425 rvp->ral_newstate = vap->iv_newstate;
426 vap->iv_newstate = rt2560_newstate;
427 vap->iv_update_beacon = rt2560_beacon_update;
428
429 ieee80211_ratectl_init(vap);
430 /* complete setup */
431 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status);
432 if (TAILQ_FIRST(&ic->ic_vaps) == vap)
433 ic->ic_opmode = opmode;
434 return vap;
435}
436
437static void
438rt2560_vap_delete(struct ieee80211vap *vap)
439{
440 struct rt2560_vap *rvp = RT2560_VAP(vap);
441
442 ieee80211_ratectl_deinit(vap);
443 ieee80211_vap_detach(vap);
444 free(rvp, M_80211_VAP);
445}
446
447void
448rt2560_resume(void *xsc)
449{
450 struct rt2560_softc *sc = xsc;
451 struct ifnet *ifp = sc->sc_ifp;
452
453 if (ifp->if_flags & IFF_UP)
454 rt2560_init(sc);
455}
456
457static void
458rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
459{
460 if (error != 0)
461 return;
462
463 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
464
465 *(bus_addr_t *)arg = segs[0].ds_addr;
466}
467
468static int
469rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring,
470 int count)
471{
472 int i, error;
473
474 ring->count = count;
475 ring->queued = 0;
476 ring->cur = ring->next = 0;
477 ring->cur_encrypt = ring->next_encrypt = 0;
478
479 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
480 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
481 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE,
482 0, NULL, NULL, &ring->desc_dmat);
483 if (error != 0) {
484 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
485 goto fail;
486 }
487
488 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
489 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
490 if (error != 0) {
491 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
492 goto fail;
493 }
494
495 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
496 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
497 0);
498 if (error != 0) {
499 device_printf(sc->sc_dev, "could not load desc DMA map\n");
500 goto fail;
501 }
502
503 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF,
504 M_NOWAIT | M_ZERO);
505 if (ring->data == NULL) {
506 device_printf(sc->sc_dev, "could not allocate soft data\n");
507 error = ENOMEM;
508 goto fail;
509 }
510
511 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
512 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
513 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL,
514 &ring->data_dmat);
515 if (error != 0) {
516 device_printf(sc->sc_dev, "could not create data DMA tag\n");
517 goto fail;
518 }
519
520 for (i = 0; i < count; i++) {
521 error = bus_dmamap_create(ring->data_dmat, 0,
522 &ring->data[i].map);
523 if (error != 0) {
524 device_printf(sc->sc_dev, "could not create DMA map\n");
525 goto fail;
526 }
527 }
528
529 return 0;
530
531fail: rt2560_free_tx_ring(sc, ring);
532 return error;
533}
534
535static void
536rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
537{
538 struct rt2560_tx_desc *desc;
539 struct rt2560_tx_data *data;
540 int i;
541
542 for (i = 0; i < ring->count; i++) {
543 desc = &ring->desc[i];
544 data = &ring->data[i];
545
546 if (data->m != NULL) {
547 bus_dmamap_sync(ring->data_dmat, data->map,
548 BUS_DMASYNC_POSTWRITE);
549 bus_dmamap_unload(ring->data_dmat, data->map);
550 m_freem(data->m);
551 data->m = NULL;
552 }
553
554 if (data->ni != NULL) {
555 ieee80211_free_node(data->ni);
556 data->ni = NULL;
557 }
558
559 desc->flags = 0;
560 }
561
562 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
563
564 ring->queued = 0;
565 ring->cur = ring->next = 0;
566 ring->cur_encrypt = ring->next_encrypt = 0;
567}
568
569static void
570rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
571{
572 struct rt2560_tx_data *data;
573 int i;
574
575 if (ring->desc != NULL) {
576 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
577 BUS_DMASYNC_POSTWRITE);
578 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
579 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
580 }
581
582 if (ring->desc_dmat != NULL)
583 bus_dma_tag_destroy(ring->desc_dmat);
584
585 if (ring->data != NULL) {
586 for (i = 0; i < ring->count; i++) {
587 data = &ring->data[i];
588
589 if (data->m != NULL) {
590 bus_dmamap_sync(ring->data_dmat, data->map,
591 BUS_DMASYNC_POSTWRITE);
592 bus_dmamap_unload(ring->data_dmat, data->map);
593 m_freem(data->m);
594 }
595
596 if (data->ni != NULL)
597 ieee80211_free_node(data->ni);
598
599 if (data->map != NULL)
600 bus_dmamap_destroy(ring->data_dmat, data->map);
601 }
602
603 free(ring->data, M_DEVBUF);
604 }
605
606 if (ring->data_dmat != NULL)
607 bus_dma_tag_destroy(ring->data_dmat);
608}
609
610static int
611rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring,
612 int count)
613{
614 struct rt2560_rx_desc *desc;
615 struct rt2560_rx_data *data;
616 bus_addr_t physaddr;
617 int i, error;
618
619 ring->count = count;
620 ring->cur = ring->next = 0;
621 ring->cur_decrypt = 0;
622
623 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
624 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
625 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE,
626 0, NULL, NULL, &ring->desc_dmat);
627 if (error != 0) {
628 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
629 goto fail;
630 }
631
632 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
633 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
634 if (error != 0) {
635 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
636 goto fail;
637 }
638
639 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
640 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
641 0);
642 if (error != 0) {
643 device_printf(sc->sc_dev, "could not load desc DMA map\n");
644 goto fail;
645 }
646
647 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF,
648 M_NOWAIT | M_ZERO);
649 if (ring->data == NULL) {
650 device_printf(sc->sc_dev, "could not allocate soft data\n");
651 error = ENOMEM;
652 goto fail;
653 }
654
655 /*
656 * Pre-allocate Rx buffers and populate Rx ring.
657 */
658 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
659 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
660 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
661 if (error != 0) {
662 device_printf(sc->sc_dev, "could not create data DMA tag\n");
663 goto fail;
664 }
665
666 for (i = 0; i < count; i++) {
667 desc = &sc->rxq.desc[i];
668 data = &sc->rxq.data[i];
669
670 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
671 if (error != 0) {
672 device_printf(sc->sc_dev, "could not create DMA map\n");
673 goto fail;
674 }
675
676 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
677 if (data->m == NULL) {
678 device_printf(sc->sc_dev,
679 "could not allocate rx mbuf\n");
680 error = ENOMEM;
681 goto fail;
682 }
683
684 error = bus_dmamap_load(ring->data_dmat, data->map,
685 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr,
686 &physaddr, 0);
687 if (error != 0) {
688 device_printf(sc->sc_dev,
689 "could not load rx buf DMA map");
690 goto fail;
691 }
692
693 desc->flags = htole32(RT2560_RX_BUSY);
694 desc->physaddr = htole32(physaddr);
695 }
696
697 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
698
699 return 0;
700
701fail: rt2560_free_rx_ring(sc, ring);
702 return error;
703}
704
705static void
706rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
707{
708 int i;
709
710 for (i = 0; i < ring->count; i++) {
711 ring->desc[i].flags = htole32(RT2560_RX_BUSY);
712 ring->data[i].drop = 0;
713 }
714
715 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
716
717 ring->cur = ring->next = 0;
718 ring->cur_decrypt = 0;
719}
720
721static void
722rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
723{
724 struct rt2560_rx_data *data;
725 int i;
726
727 if (ring->desc != NULL) {
728 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
729 BUS_DMASYNC_POSTWRITE);
730 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
731 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
732 }
733
734 if (ring->desc_dmat != NULL)
735 bus_dma_tag_destroy(ring->desc_dmat);
736
737 if (ring->data != NULL) {
738 for (i = 0; i < ring->count; i++) {
739 data = &ring->data[i];
740
741 if (data->m != NULL) {
742 bus_dmamap_sync(ring->data_dmat, data->map,
743 BUS_DMASYNC_POSTREAD);
744 bus_dmamap_unload(ring->data_dmat, data->map);
745 m_freem(data->m);
746 }
747
748 if (data->map != NULL)
749 bus_dmamap_destroy(ring->data_dmat, data->map);
750 }
751
752 free(ring->data, M_DEVBUF);
753 }
754
755 if (ring->data_dmat != NULL)
756 bus_dma_tag_destroy(ring->data_dmat);
757}
758
759static int
760rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
761{
762 struct rt2560_vap *rvp = RT2560_VAP(vap);
763 struct ifnet *ifp = vap->iv_ic->ic_ifp;
764 struct rt2560_softc *sc = ifp->if_softc;
765 int error;
766
767 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) {
768 /* abort TSF synchronization */
769 RAL_WRITE(sc, RT2560_CSR14, 0);
770
771 /* turn association led off */
772 rt2560_update_led(sc, 0, 0);
773 }
774
775 error = rvp->ral_newstate(vap, nstate, arg);
776
777 if (error == 0 && nstate == IEEE80211_S_RUN) {
778 struct ieee80211_node *ni = vap->iv_bss;
779 struct mbuf *m;
780
781 if (vap->iv_opmode != IEEE80211_M_MONITOR) {
782 rt2560_update_plcp(sc);
783 rt2560_set_basicrates(sc, &ni->ni_rates);
784 rt2560_set_bssid(sc, ni->ni_bssid);
785 }
786
787 if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
788 vap->iv_opmode == IEEE80211_M_IBSS ||
789 vap->iv_opmode == IEEE80211_M_MBSS) {
790 m = ieee80211_beacon_alloc(ni, &rvp->ral_bo);
791 if (m == NULL) {
792 if_printf(ifp, "could not allocate beacon\n");
793 return ENOBUFS;
794 }
795 ieee80211_ref_node(ni);
796 error = rt2560_tx_bcn(sc, m, ni);
797 if (error != 0)
798 return error;
799 }
800
801 /* turn assocation led on */
802 rt2560_update_led(sc, 1, 0);
803
804 if (vap->iv_opmode != IEEE80211_M_MONITOR)
805 rt2560_enable_tsf_sync(sc);
806 else
807 rt2560_enable_tsf(sc);
808 }
809 return error;
810}
811
812/*
813 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or
814 * 93C66).
815 */
816static uint16_t
817rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr)
818{
819 uint32_t tmp;
820 uint16_t val;
821 int n;
822
823 /* clock C once before the first command */
824 RT2560_EEPROM_CTL(sc, 0);
825
826 RT2560_EEPROM_CTL(sc, RT2560_S);
827 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
828 RT2560_EEPROM_CTL(sc, RT2560_S);
829
830 /* write start bit (1) */
831 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
832 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
833
834 /* write READ opcode (10) */
835 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
836 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
837 RT2560_EEPROM_CTL(sc, RT2560_S);
838 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
839
840 /* write address (A5-A0 or A7-A0) */
841 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7;
842 for (; n >= 0; n--) {
843 RT2560_EEPROM_CTL(sc, RT2560_S |
844 (((addr >> n) & 1) << RT2560_SHIFT_D));
845 RT2560_EEPROM_CTL(sc, RT2560_S |
846 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C);
847 }
848
849 RT2560_EEPROM_CTL(sc, RT2560_S);
850
851 /* read data Q15-Q0 */
852 val = 0;
853 for (n = 15; n >= 0; n--) {
854 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
855 tmp = RAL_READ(sc, RT2560_CSR21);
856 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n;
857 RT2560_EEPROM_CTL(sc, RT2560_S);
858 }
859
860 RT2560_EEPROM_CTL(sc, 0);
861
862 /* clear Chip Select and clock C */
863 RT2560_EEPROM_CTL(sc, RT2560_S);
864 RT2560_EEPROM_CTL(sc, 0);
865 RT2560_EEPROM_CTL(sc, RT2560_C);
866
867 return val;
868}
869
870/*
871 * Some frames were processed by the hardware cipher engine and are ready for
872 * transmission.
873 */
874static void
875rt2560_encryption_intr(struct rt2560_softc *sc)
876{
877 struct rt2560_tx_desc *desc;
878 int hw;
879
880 /* retrieve last descriptor index processed by cipher engine */
881 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr;
882 hw /= RT2560_TX_DESC_SIZE;
883
884 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
885 BUS_DMASYNC_POSTREAD);
886
887 while (sc->txq.next_encrypt != hw) {
888 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) {
889 printf("hw encrypt %d, cur_encrypt %d\n", hw,
890 sc->txq.cur_encrypt);
891 break;
892 }
893
894 desc = &sc->txq.desc[sc->txq.next_encrypt];
895
896 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
897 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY))
898 break;
899
900 /* for TKIP, swap eiv field to fix a bug in ASIC */
901 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) ==
902 RT2560_TX_CIPHER_TKIP)
903 desc->eiv = bswap32(desc->eiv);
904
905 /* mark the frame ready for transmission */
906 desc->flags |= htole32(RT2560_TX_VALID);
907 desc->flags |= htole32(RT2560_TX_BUSY);
908
909 DPRINTFN(sc, 15, "encryption done idx=%u\n",
910 sc->txq.next_encrypt);
911
912 sc->txq.next_encrypt =
913 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT;
914 }
915
916 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
917 BUS_DMASYNC_PREWRITE);
918
919 /* kick Tx */
920 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX);
921}
922
923static void
924rt2560_tx_intr(struct rt2560_softc *sc)
925{
926 struct ifnet *ifp = sc->sc_ifp;
927 struct rt2560_tx_desc *desc;
928 struct rt2560_tx_data *data;
929 struct mbuf *m;
930 uint32_t flags;
931 int retrycnt;
932 struct ieee80211vap *vap;
933 struct ieee80211_node *ni;
934
935 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
936 BUS_DMASYNC_POSTREAD);
937
938 for (;;) {
939 desc = &sc->txq.desc[sc->txq.next];
940 data = &sc->txq.data[sc->txq.next];
941
942 flags = le32toh(desc->flags);
943 if ((flags & RT2560_TX_BUSY) ||
944 (flags & RT2560_TX_CIPHER_BUSY) ||
945 !(flags & RT2560_TX_VALID))
946 break;
947
948 m = data->m;
949 ni = data->ni;
950 vap = ni->ni_vap;
951
952 switch (flags & RT2560_TX_RESULT_MASK) {
953 case RT2560_TX_SUCCESS:
954 retrycnt = 0;
955
956 DPRINTFN(sc, 10, "%s\n", "data frame sent successfully");
957 if (data->rix != IEEE80211_FIXED_RATE_NONE)
958 ieee80211_ratectl_tx_complete(vap, ni,
959 IEEE80211_RATECTL_TX_SUCCESS,
960 &retrycnt, NULL);
961 ifp->if_opackets++;
962 break;
963
964 case RT2560_TX_SUCCESS_RETRY:
965 retrycnt = RT2560_TX_RETRYCNT(flags);
966
967 DPRINTFN(sc, 9, "data frame sent after %u retries\n",
968 retrycnt);
969 if (data->rix != IEEE80211_FIXED_RATE_NONE)
970 ieee80211_ratectl_tx_complete(vap, ni,
971 IEEE80211_RATECTL_TX_SUCCESS,
972 &retrycnt, NULL);
973 ifp->if_opackets++;
974 break;
975
976 case RT2560_TX_FAIL_RETRY:
977 retrycnt = RT2560_TX_RETRYCNT(flags);
978
979 DPRINTFN(sc, 9, "data frame failed after %d retries\n",
980 retrycnt);
981 if (data->rix != IEEE80211_FIXED_RATE_NONE)
982 ieee80211_ratectl_tx_complete(vap, ni,
983 IEEE80211_RATECTL_TX_FAILURE,
984 &retrycnt, NULL);
985 ifp->if_oerrors++;
986 break;
987
988 case RT2560_TX_FAIL_INVALID:
989 case RT2560_TX_FAIL_OTHER:
990 default:
991 device_printf(sc->sc_dev, "sending data frame failed "
992 "0x%08x\n", flags);
993 ifp->if_oerrors++;
994 }
995
996 bus_dmamap_sync(sc->txq.data_dmat, data->map,
997 BUS_DMASYNC_POSTWRITE);
998 bus_dmamap_unload(sc->txq.data_dmat, data->map);
999 m_freem(m);
1000 data->m = NULL;
1001 ieee80211_free_node(data->ni);
1002 data->ni = NULL;
1003
1004 /* descriptor is no longer valid */
1005 desc->flags &= ~htole32(RT2560_TX_VALID);
1006
1007 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next);
1008
1009 sc->txq.queued--;
1010 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT;
1011 }
1012
1013 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1014 BUS_DMASYNC_PREWRITE);
1015
1016 if (sc->prioq.queued == 0 && sc->txq.queued == 0)
1017 sc->sc_tx_timer = 0;
1018
1019 if (sc->txq.queued < RT2560_TX_RING_COUNT - 1) {
1020 sc->sc_flags &= ~RT2560_F_DATA_OACTIVE;
1021 if ((sc->sc_flags &
1022 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0)
1023 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1024 rt2560_start_locked(ifp);
1025 }
1026}
1027
1028static void
1029rt2560_prio_intr(struct rt2560_softc *sc)
1030{
1031 struct ifnet *ifp = sc->sc_ifp;
1032 struct rt2560_tx_desc *desc;
1033 struct rt2560_tx_data *data;
1034 struct ieee80211_node *ni;
1035 struct mbuf *m;
1036 int flags;
1037
1038 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1039 BUS_DMASYNC_POSTREAD);
1040
1041 for (;;) {
1042 desc = &sc->prioq.desc[sc->prioq.next];
1043 data = &sc->prioq.data[sc->prioq.next];
1044
1045 flags = le32toh(desc->flags);
1046 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0)
1047 break;
1048
1049 switch (flags & RT2560_TX_RESULT_MASK) {
1050 case RT2560_TX_SUCCESS:
1051 DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully");
1052 break;
1053
1054 case RT2560_TX_SUCCESS_RETRY:
1055 DPRINTFN(sc, 9, "mgt frame sent after %u retries\n",
1056 (flags >> 5) & 0x7);
1057 break;
1058
1059 case RT2560_TX_FAIL_RETRY:
1060 DPRINTFN(sc, 9, "%s\n",
1061 "sending mgt frame failed (too much retries)");
1062 break;
1063
1064 case RT2560_TX_FAIL_INVALID:
1065 case RT2560_TX_FAIL_OTHER:
1066 default:
1067 device_printf(sc->sc_dev, "sending mgt frame failed "
1068 "0x%08x\n", flags);
1069 break;
1070 }
1071
1072 bus_dmamap_sync(sc->prioq.data_dmat, data->map,
1073 BUS_DMASYNC_POSTWRITE);
1074 bus_dmamap_unload(sc->prioq.data_dmat, data->map);
1075
1076 m = data->m;
1077 data->m = NULL;
1078 ni = data->ni;
1079 data->ni = NULL;
1080
1081 /* descriptor is no longer valid */
1082 desc->flags &= ~htole32(RT2560_TX_VALID);
1083
1084 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next);
1085
1086 sc->prioq.queued--;
1087 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT;
1088
1089 if (m->m_flags & M_TXCB)
1090 ieee80211_process_callback(ni, m,
1091 (flags & RT2560_TX_RESULT_MASK) &~
1092 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY));
1093 m_freem(m);
1094 ieee80211_free_node(ni);
1095 }
1096
1097 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1098 BUS_DMASYNC_PREWRITE);
1099
1100 if (sc->prioq.queued == 0 && sc->txq.queued == 0)
1101 sc->sc_tx_timer = 0;
1102
1103 if (sc->prioq.queued < RT2560_PRIO_RING_COUNT) {
1104 sc->sc_flags &= ~RT2560_F_PRIO_OACTIVE;
1105 if ((sc->sc_flags &
1106 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0)
1107 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1108 rt2560_start_locked(ifp);
1109 }
1110}
1111
1112/*
1113 * Some frames were processed by the hardware cipher engine and are ready for
1114 * handoff to the IEEE802.11 layer.
1115 */
1116static void
1117rt2560_decryption_intr(struct rt2560_softc *sc)
1118{
1119 struct ifnet *ifp = sc->sc_ifp;
1120 struct ieee80211com *ic = ifp->if_l2com;
1121 struct rt2560_rx_desc *desc;
1122 struct rt2560_rx_data *data;
1123 bus_addr_t physaddr;
1124 struct ieee80211_frame *wh;
1125 struct ieee80211_node *ni;
1126 struct mbuf *mnew, *m;
1127 int hw, error;
1128 int8_t rssi, nf;
1129
1130 /* retrieve last decriptor index processed by cipher engine */
1131 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr;
1132 hw /= RT2560_RX_DESC_SIZE;
1133
1134 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1135 BUS_DMASYNC_POSTREAD);
1136
1137 for (; sc->rxq.cur_decrypt != hw;) {
1138 desc = &sc->rxq.desc[sc->rxq.cur_decrypt];
1139 data = &sc->rxq.data[sc->rxq.cur_decrypt];
1140
1141 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1142 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1143 break;
1144
1145 if (data->drop) {
1146 ifp->if_ierrors++;
1147 goto skip;
1148 }
1149
1150 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 &&
1151 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) {
1152 ifp->if_ierrors++;
1153 goto skip;
1154 }
1155
1156 /*
1157 * Try to allocate a new mbuf for this ring element and load it
1158 * before processing the current mbuf. If the ring element
1159 * cannot be loaded, drop the received packet and reuse the old
1160 * mbuf. In the unlikely case that the old mbuf can't be
1161 * reloaded either, explicitly panic.
1162 */
1163 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1164 if (mnew == NULL) {
1165 ifp->if_ierrors++;
1166 goto skip;
1167 }
1168
1169 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1170 BUS_DMASYNC_POSTREAD);
1171 bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1172
1173 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1174 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr,
1175 &physaddr, 0);
1176 if (error != 0) {
1177 m_freem(mnew);
1178
1179 /* try to reload the old mbuf */
1180 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1181 mtod(data->m, void *), MCLBYTES,
1182 rt2560_dma_map_addr, &physaddr, 0);
1183 if (error != 0) {
1184 /* very unlikely that it will fail... */
1185 panic("%s: could not load old rx mbuf",
1186 device_get_name(sc->sc_dev));
1187 }
1188 ifp->if_ierrors++;
1189 goto skip;
1190 }
1191
1192 /*
1193 * New mbuf successfully loaded, update Rx ring and continue
1194 * processing.
1195 */
1196 m = data->m;
1197 data->m = mnew;
1198 desc->physaddr = htole32(physaddr);
1199
1200 /* finalize mbuf */
1201 m->m_pkthdr.rcvif = ifp;
1202 m->m_pkthdr.len = m->m_len =
1203 (le32toh(desc->flags) >> 16) & 0xfff;
1204
1205 rssi = RT2560_RSSI(sc, desc->rssi);
1206 nf = RT2560_NOISE_FLOOR;
1207 if (ieee80211_radiotap_active(ic)) {
1208 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap;
1209 uint32_t tsf_lo, tsf_hi;
1210
1211 /* get timestamp (low and high 32 bits) */
1212 tsf_hi = RAL_READ(sc, RT2560_CSR17);
1213 tsf_lo = RAL_READ(sc, RT2560_CSR16);
1214
1215 tap->wr_tsf =
1216 htole64(((uint64_t)tsf_hi << 32) | tsf_lo);
1217 tap->wr_flags = 0;
1218 tap->wr_rate = ieee80211_plcp2rate(desc->rate,
1219 (desc->flags & htole32(RT2560_RX_OFDM)) ?
1220 IEEE80211_T_OFDM : IEEE80211_T_CCK);
1221 tap->wr_antenna = sc->rx_ant;
1222 tap->wr_antsignal = nf + rssi;
1223 tap->wr_antnoise = nf;
1224 }
1225
1226 sc->sc_flags |= RT2560_F_INPUT_RUNNING;
1227 RAL_UNLOCK(sc);
1228 wh = mtod(m, struct ieee80211_frame *);
1229 ni = ieee80211_find_rxnode(ic,
1230 (struct ieee80211_frame_min *)wh);
1231 if (ni != NULL) {
1232 (void) ieee80211_input(ni, m, rssi, nf);
1233 ieee80211_free_node(ni);
1234 } else
1235 (void) ieee80211_input_all(ic, m, rssi, nf);
1236
1237 RAL_LOCK(sc);
1238 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING;
1239skip: desc->flags = htole32(RT2560_RX_BUSY);
1240
1241 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt);
1242
1243 sc->rxq.cur_decrypt =
1244 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT;
1245 }
1246
1247 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1248 BUS_DMASYNC_PREWRITE);
1249}
1250
1251/*
1252 * Some frames were received. Pass them to the hardware cipher engine before
1253 * sending them to the 802.11 layer.
1254 */
1255static void
1256rt2560_rx_intr(struct rt2560_softc *sc)
1257{
1258 struct rt2560_rx_desc *desc;
1259 struct rt2560_rx_data *data;
1260
1261 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1262 BUS_DMASYNC_POSTREAD);
1263
1264 for (;;) {
1265 desc = &sc->rxq.desc[sc->rxq.cur];
1266 data = &sc->rxq.data[sc->rxq.cur];
1267
1268 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1269 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1270 break;
1271
1272 data->drop = 0;
1273
1274 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) ||
1275 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) {
1276 /*
1277 * This should not happen since we did not request
1278 * to receive those frames when we filled RXCSR0.
1279 */
1280 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n",
1281 le32toh(desc->flags));
1282 data->drop = 1;
1283 }
1284
1285 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) {
1286 DPRINTFN(sc, 5, "%s\n", "bad length");
1287 data->drop = 1;
1288 }
1289
1290 /* mark the frame for decryption */
1291 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY);
1292
1293 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur);
1294
1295 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT;
1296 }
1297
1298 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1299 BUS_DMASYNC_PREWRITE);
1300
1301 /* kick decrypt */
1302 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT);
1303}
1304
1305static void
1306rt2560_beacon_update(struct ieee80211vap *vap, int item)
1307{
1308 struct rt2560_vap *rvp = RT2560_VAP(vap);
1309 struct ieee80211_beacon_offsets *bo = &rvp->ral_bo;
1310
1311 setbit(bo->bo_flags, item);
1312}
1313
1314/*
1315 * This function is called periodically in IBSS mode when a new beacon must be
1316 * sent out.
1317 */
1318static void
1319rt2560_beacon_expire(struct rt2560_softc *sc)
1320{
1321 struct ifnet *ifp = sc->sc_ifp;
1322 struct ieee80211com *ic = ifp->if_l2com;
1323 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1324 struct rt2560_vap *rvp = RT2560_VAP(vap);
1325 struct rt2560_tx_data *data;
1326
1327 if (ic->ic_opmode != IEEE80211_M_IBSS &&
1328 ic->ic_opmode != IEEE80211_M_HOSTAP &&
1329 ic->ic_opmode != IEEE80211_M_MBSS)
1330 return;
1331
1332 data = &sc->bcnq.data[sc->bcnq.next];
1333 /*
1334 * Don't send beacon if bsschan isn't set
1335 */
1336 if (data->ni == NULL)
1337 return;
1338
1339 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
1340 bus_dmamap_unload(sc->bcnq.data_dmat, data->map);
1341
1342 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */
1343 ieee80211_beacon_update(data->ni, &rvp->ral_bo, data->m, 1);
1344
1345 rt2560_tx_bcn(sc, data->m, data->ni);
1346
1347 DPRINTFN(sc, 15, "%s", "beacon expired\n");
1348
1349 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT;
1350}
1351
1352/* ARGSUSED */
1353static void
1354rt2560_wakeup_expire(struct rt2560_softc *sc)
1355{
1356 DPRINTFN(sc, 2, "%s", "wakeup expired\n");
1357}
1358
1359void
1360rt2560_intr(void *arg)
1361{
1362 struct rt2560_softc *sc = arg;
1363 struct ifnet *ifp = sc->sc_ifp;
1364 uint32_t r;
1365
1366 RAL_LOCK(sc);
1367
1368 /* disable interrupts */
1369 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
1370
1371 /* don't re-enable interrupts if we're shutting down */
1372 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1373 RAL_UNLOCK(sc);
1374 return;
1375 }
1376
1377 r = RAL_READ(sc, RT2560_CSR7);
1378 RAL_WRITE(sc, RT2560_CSR7, r);
1379
1380 if (r & RT2560_BEACON_EXPIRE)
1381 rt2560_beacon_expire(sc);
1382
1383 if (r & RT2560_WAKEUP_EXPIRE)
1384 rt2560_wakeup_expire(sc);
1385
1386 if (r & RT2560_ENCRYPTION_DONE)
1387 rt2560_encryption_intr(sc);
1388
1389 if (r & RT2560_TX_DONE)
1390 rt2560_tx_intr(sc);
1391
1392 if (r & RT2560_PRIO_DONE)
1393 rt2560_prio_intr(sc);
1394
1395 if (r & RT2560_DECRYPTION_DONE)
1396 rt2560_decryption_intr(sc);
1397
1398 if (r & RT2560_RX_DONE) {
1399 rt2560_rx_intr(sc);
1400 rt2560_encryption_intr(sc);
1401 }
1402
1403 /* re-enable interrupts */
1404 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
1405
1406 RAL_UNLOCK(sc);
1407}
1408
1409#define RAL_SIFS 10 /* us */
1410
1411#define RT2560_TXRX_TURNAROUND 10 /* us */
1412
1413static uint8_t
1414rt2560_plcp_signal(int rate)
1415{
1416 switch (rate) {
1417 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1418 case 12: return 0xb;
1419 case 18: return 0xf;
1420 case 24: return 0xa;
1421 case 36: return 0xe;
1422 case 48: return 0x9;
1423 case 72: return 0xd;
1424 case 96: return 0x8;
1425 case 108: return 0xc;
1426
1427 /* CCK rates (NB: not IEEE std, device-specific) */
1428 case 2: return 0x0;
1429 case 4: return 0x1;
1430 case 11: return 0x2;
1431 case 22: return 0x3;
1432 }
1433 return 0xff; /* XXX unsupported/unknown rate */
1434}
1435
1436static void
1437rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc,
1438 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr)
1439{
1440 struct ifnet *ifp = sc->sc_ifp;
1441 struct ieee80211com *ic = ifp->if_l2com;
1442 uint16_t plcp_length;
1443 int remainder;
1444
1445 desc->flags = htole32(flags);
1446 desc->flags |= htole32(len << 16);
1447
1448 desc->physaddr = htole32(physaddr);
1449 desc->wme = htole16(
1450 RT2560_AIFSN(2) |
1451 RT2560_LOGCWMIN(3) |
1452 RT2560_LOGCWMAX(8));
1453
1454 /* setup PLCP fields */
1455 desc->plcp_signal = rt2560_plcp_signal(rate);
1456 desc->plcp_service = 4;
1457
1458 len += IEEE80211_CRC_LEN;
1459 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) {
1460 desc->flags |= htole32(RT2560_TX_OFDM);
1461
1462 plcp_length = len & 0xfff;
1463 desc->plcp_length_hi = plcp_length >> 6;
1464 desc->plcp_length_lo = plcp_length & 0x3f;
1465 } else {
1466 plcp_length = (16 * len + rate - 1) / rate;
1467 if (rate == 22) {
1468 remainder = (16 * len) % 22;
1469 if (remainder != 0 && remainder < 7)
1470 desc->plcp_service |= RT2560_PLCP_LENGEXT;
1471 }
1472 desc->plcp_length_hi = plcp_length >> 8;
1473 desc->plcp_length_lo = plcp_length & 0xff;
1474
1475 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1476 desc->plcp_signal |= 0x08;
1477 }
1478
1479 if (!encrypt)
1480 desc->flags |= htole32(RT2560_TX_VALID);
1481 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY)
1482 : htole32(RT2560_TX_BUSY);
1483}
1484
1485static int
1486rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0,
1487 struct ieee80211_node *ni)
1488{
1489 struct ieee80211vap *vap = ni->ni_vap;
1490 struct rt2560_tx_desc *desc;
1491 struct rt2560_tx_data *data;
1492 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1493 int nsegs, rate, error;
1494
1495 desc = &sc->bcnq.desc[sc->bcnq.cur];
1496 data = &sc->bcnq.data[sc->bcnq.cur];
1497
1498 /* XXX maybe a separate beacon rate? */
1499 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate;
1500
1501 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0,
1502 segs, &nsegs, BUS_DMA_NOWAIT);
1503 if (error != 0) {
1504 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1505 error);
1506 m_freem(m0);
1507 return error;
1508 }
1509
1510 if (ieee80211_radiotap_active_vap(vap)) {
1511 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1512
1513 tap->wt_flags = 0;
1514 tap->wt_rate = rate;
1515 tap->wt_antenna = sc->tx_ant;
1516
1517 ieee80211_radiotap_tx(vap, m0);
1518 }
1519
1520 data->m = m0;
1521 data->ni = ni;
1522
1523 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF |
1524 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr);
1525
1526 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n",
1527 m0->m_pkthdr.len, sc->bcnq.cur, rate);
1528
1529 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1530 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map,
1531 BUS_DMASYNC_PREWRITE);
1532
1533 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT;
1534
1535 return 0;
1536}
1537
1538static int
1539rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0,
1540 struct ieee80211_node *ni)
1541{
1542 struct ieee80211vap *vap = ni->ni_vap;
1543 struct ieee80211com *ic = ni->ni_ic;
1544 struct rt2560_tx_desc *desc;
1545 struct rt2560_tx_data *data;
1546 struct ieee80211_frame *wh;
1547 struct ieee80211_key *k;
1548 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1549 uint16_t dur;
1550 uint32_t flags = 0;
1551 int nsegs, rate, error;
1552
1553 desc = &sc->prioq.desc[sc->prioq.cur];
1554 data = &sc->prioq.data[sc->prioq.cur];
1555
1556 rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate;
1557
1558 wh = mtod(m0, struct ieee80211_frame *);
1559
1560 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1561 k = ieee80211_crypto_encap(ni, m0);
1562 if (k == NULL) {
1563 m_freem(m0);
1564 return ENOBUFS;
1565 }
1566 }
1567
1568 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
1569 segs, &nsegs, 0);
1570 if (error != 0) {
1571 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1572 error);
1573 m_freem(m0);
1574 return error;
1575 }
1576
1577 if (ieee80211_radiotap_active_vap(vap)) {
1578 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1579
1580 tap->wt_flags = 0;
1581 tap->wt_rate = rate;
1582 tap->wt_antenna = sc->tx_ant;
1583
1584 ieee80211_radiotap_tx(vap, m0);
1585 }
1586
1587 data->m = m0;
1588 data->ni = ni;
1589 /* management frames are not taken into account for amrr */
1590 data->rix = IEEE80211_FIXED_RATE_NONE;
1591
1592 wh = mtod(m0, struct ieee80211_frame *);
1593
1594 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1595 flags |= RT2560_TX_ACK;
1596
1597 dur = ieee80211_ack_duration(ic->ic_rt,
1598 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1599 *(uint16_t *)wh->i_dur = htole16(dur);
1600
1601 /* tell hardware to add timestamp for probe responses */
1602 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
1603 IEEE80211_FC0_TYPE_MGT &&
1604 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) ==
1605 IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1606 flags |= RT2560_TX_TIMESTAMP;
1607 }
1608
1609 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0,
1610 segs->ds_addr);
1611
1612 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1613 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1614 BUS_DMASYNC_PREWRITE);
1615
1616 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n",
1617 m0->m_pkthdr.len, sc->prioq.cur, rate);
1618
1619 /* kick prio */
1620 sc->prioq.queued++;
1621 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1622 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1623
1624 return 0;
1625}
1626
1627static int
1628rt2560_sendprot(struct rt2560_softc *sc,
1629 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate)
1630{
1631 struct ieee80211com *ic = ni->ni_ic;
1632 const struct ieee80211_frame *wh;
1633 struct rt2560_tx_desc *desc;
1634 struct rt2560_tx_data *data;
1635 struct mbuf *mprot;
1636 int protrate, ackrate, pktlen, flags, isshort, error;
1637 uint16_t dur;
1638 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1639 int nsegs;
1640
1641 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY,
1642 ("protection %d", prot));
1643
1644 wh = mtod(m, const struct ieee80211_frame *);
1645 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN;
1646
1647 protrate = ieee80211_ctl_rate(ic->ic_rt, rate);
1648 ackrate = ieee80211_ack_rate(ic->ic_rt, rate);
1649
1650 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0;
1651 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort)
1652 + ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1653 flags = RT2560_TX_MORE_FRAG;
1654 if (prot == IEEE80211_PROT_RTSCTS) {
1655 /* NB: CTS is the same size as an ACK */
1656 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1657 flags |= RT2560_TX_ACK;
1658 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur);
1659 } else {
1660 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur);
1661 }
1662 if (mprot == NULL) {
1663 /* XXX stat + msg */
1664 return ENOBUFS;
1665 }
1666
1667 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1668 data = &sc->txq.data[sc->txq.cur_encrypt];
1669
1670 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
1671 mprot, segs, &nsegs, 0);
1672 if (error != 0) {
1673 device_printf(sc->sc_dev,
1674 "could not map mbuf (error %d)\n", error);
1675 m_freem(mprot);
1676 return error;
1677 }
1678
1679 data->m = mprot;
1680 data->ni = ieee80211_ref_node(ni);
1681 /* ctl frames are not taken into account for amrr */
1682 data->rix = IEEE80211_FIXED_RATE_NONE;
1683
1684 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1,
1685 segs->ds_addr);
1686
1687 bus_dmamap_sync(sc->txq.data_dmat, data->map,
1688 BUS_DMASYNC_PREWRITE);
1689
1690 sc->txq.queued++;
1691 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1692
1693 return 0;
1694}
1695
1696static int
1697rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0,
1698 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
1699{
1700 struct ieee80211vap *vap = ni->ni_vap;
1701 struct ieee80211com *ic = ni->ni_ic;
1702 struct rt2560_tx_desc *desc;
1703 struct rt2560_tx_data *data;
1704 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1705 uint32_t flags;
1706 int nsegs, rate, error;
1707
1708 desc = &sc->prioq.desc[sc->prioq.cur];
1709 data = &sc->prioq.data[sc->prioq.cur];
1710
1711 rate = params->ibp_rate0;
1712 if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
1713 /* XXX fall back to mcast/mgmt rate? */
1714 m_freem(m0);
1715 return EINVAL;
1716 }
1717
1718 flags = 0;
1719 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
1720 flags |= RT2560_TX_ACK;
1721 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) {
1722 error = rt2560_sendprot(sc, m0, ni,
1723 params->ibp_flags & IEEE80211_BPF_RTS ?
1724 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY,
1725 rate);
1726 if (error) {
1727 m_freem(m0);
1728 return error;
1729 }
1730 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS;
1731 }
1732
1733 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
1734 segs, &nsegs, 0);
1735 if (error != 0) {
1736 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1737 error);
1738 m_freem(m0);
1739 return error;
1740 }
1741
1742 if (ieee80211_radiotap_active_vap(vap)) {
1743 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1744
1745 tap->wt_flags = 0;
1746 tap->wt_rate = rate;
1747 tap->wt_antenna = sc->tx_ant;
1748
1749 ieee80211_radiotap_tx(ni->ni_vap, m0);
1750 }
1751
1752 data->m = m0;
1753 data->ni = ni;
1754
1755 /* XXX need to setup descriptor ourself */
1756 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len,
1757 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0,
1758 segs->ds_addr);
1759
1760 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1761 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1762 BUS_DMASYNC_PREWRITE);
1763
1764 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n",
1765 m0->m_pkthdr.len, sc->prioq.cur, rate);
1766
1767 /* kick prio */
1768 sc->prioq.queued++;
1769 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1770 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1771
1772 return 0;
1773}
1774
1775static int
1776rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0,
1777 struct ieee80211_node *ni)
1778{
1779 struct ieee80211vap *vap = ni->ni_vap;
1780 struct ieee80211com *ic = ni->ni_ic;
1781 struct rt2560_tx_desc *desc;
1782 struct rt2560_tx_data *data;
1783 struct ieee80211_frame *wh;
1784 const struct ieee80211_txparam *tp;
1785 struct ieee80211_key *k;
1786 struct mbuf *mnew;
1787 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1788 uint16_t dur;
1789 uint32_t flags;
1790 int nsegs, rate, error;
1791
1792 wh = mtod(m0, struct ieee80211_frame *);
1793
1794 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
1795 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1796 rate = tp->mcastrate;
1797 } else if (m0->m_flags & M_EAPOL) {
1798 rate = tp->mgmtrate;
1799 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) {
1800 rate = tp->ucastrate;
1801 } else {
1802 (void) ieee80211_ratectl_rate(ni, NULL, 0);
1803 rate = ni->ni_txrate;
1804 }
1805
1806 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1807 k = ieee80211_crypto_encap(ni, m0);
1808 if (k == NULL) {
1809 m_freem(m0);
1810 return ENOBUFS;
1811 }
1812
1813 /* packet header may have moved, reset our local pointer */
1814 wh = mtod(m0, struct ieee80211_frame *);
1815 }
1816
1817 flags = 0;
1818 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1819 int prot = IEEE80211_PROT_NONE;
1820 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold)
1821 prot = IEEE80211_PROT_RTSCTS;
1822 else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
1823 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM)
1824 prot = ic->ic_protmode;
1825 if (prot != IEEE80211_PROT_NONE) {
1826 error = rt2560_sendprot(sc, m0, ni, prot, rate);
1827 if (error) {
1828 m_freem(m0);
1829 return error;
1830 }
1831 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS;
1832 }
1833 }
1834
1835 data = &sc->txq.data[sc->txq.cur_encrypt];
1836 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1837
1838 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0,
1839 segs, &nsegs, 0);
1840 if (error != 0 && error != EFBIG) {
1841 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1842 error);
1843 m_freem(m0);
1844 return error;
1845 }
1846 if (error != 0) {
1847 mnew = m_defrag(m0, M_NOWAIT);
1848 if (mnew == NULL) {
1849 device_printf(sc->sc_dev,
1850 "could not defragment mbuf\n");
1851 m_freem(m0);
1852 return ENOBUFS;
1853 }
1854 m0 = mnew;
1855
1856 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
1857 m0, segs, &nsegs, 0);
1858 if (error != 0) {
1859 device_printf(sc->sc_dev,
1860 "could not map mbuf (error %d)\n", error);
1861 m_freem(m0);
1862 return error;
1863 }
1864
1865 /* packet header may have moved, reset our local pointer */
1866 wh = mtod(m0, struct ieee80211_frame *);
1867 }
1868
1869 if (ieee80211_radiotap_active_vap(vap)) {
1870 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1871
1872 tap->wt_flags = 0;
1873 tap->wt_rate = rate;
1874 tap->wt_antenna = sc->tx_ant;
1875
1876 ieee80211_radiotap_tx(vap, m0);
1877 }
1878
1879 data->m = m0;
1880 data->ni = ni;
1881
1882 /* remember link conditions for rate adaptation algorithm */
1883 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) {
1884 data->rix = ni->ni_txrate;
1885 /* XXX probably need last rssi value and not avg */
1886 data->rssi = ic->ic_node_getrssi(ni);
1887 } else
1888 data->rix = IEEE80211_FIXED_RATE_NONE;
1889
1890 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1891 flags |= RT2560_TX_ACK;
1892
1893 dur = ieee80211_ack_duration(ic->ic_rt,
1894 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1895 *(uint16_t *)wh->i_dur = htole16(dur);
1896 }
1897
1898 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1,
1899 segs->ds_addr);
1900
1901 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1902 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1903 BUS_DMASYNC_PREWRITE);
1904
1905 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n",
1906 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate);
1907
1908 /* kick encrypt */
1909 sc->txq.queued++;
1910 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1911 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT);
1912
1913 return 0;
1914}
1915
1916static void
1917rt2560_start_locked(struct ifnet *ifp)
1918{
1919 struct rt2560_softc *sc = ifp->if_softc;
1920 struct mbuf *m;
1921 struct ieee80211_node *ni;
1922
1923 RAL_LOCK_ASSERT(sc);
1924
1925 for (;;) {
1926 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1927 if (m == NULL)
1928 break;
1929 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) {
1930 IFQ_DRV_PREPEND(&ifp->if_snd, m);
1931 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1932 sc->sc_flags |= RT2560_F_DATA_OACTIVE;
1933 break;
1934 }
1935 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1936 if (rt2560_tx_data(sc, m, ni) != 0) {
1937 ieee80211_free_node(ni);
1938 ifp->if_oerrors++;
1939 break;
1940 }
1941
1942 sc->sc_tx_timer = 5;
1943 }
1944}
1945
1946static void
1947rt2560_start(struct ifnet *ifp)
1948{
1949 struct rt2560_softc *sc = ifp->if_softc;
1950
1951 RAL_LOCK(sc);
1952 rt2560_start_locked(ifp);
1953 RAL_UNLOCK(sc);
1954}
1955
1956static void
1957rt2560_watchdog(void *arg)
1958{
1959 struct rt2560_softc *sc = arg;
1960 struct ifnet *ifp = sc->sc_ifp;
1961
1962 RAL_LOCK_ASSERT(sc);
1963
1964 KASSERT(ifp->if_drv_flags & IFF_DRV_RUNNING, ("not running"));
1965
1966 if (sc->sc_invalid) /* card ejected */
1967 return;
1968
1969 rt2560_encryption_intr(sc);
1970 rt2560_tx_intr(sc);
1971
1972 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) {
1973 if_printf(ifp, "device timeout\n");
1974 rt2560_init_locked(sc);
1975 ifp->if_oerrors++;
1976 /* NB: callout is reset in rt2560_init() */
1977 return;
1978 }
1979 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
1980}
1981
1982static int
1983rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1984{
1985 struct rt2560_softc *sc = ifp->if_softc;
1986 struct ieee80211com *ic = ifp->if_l2com;
1987 struct ifreq *ifr = (struct ifreq *) data;
1988 int error = 0, startall = 0;
1989
1990 switch (cmd) {
1991 case SIOCSIFFLAGS:
1992 RAL_LOCK(sc);
1993 if (ifp->if_flags & IFF_UP) {
1994 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1995 rt2560_init_locked(sc);
1996 startall = 1;
1997 } else
1998 rt2560_update_promisc(ifp);
1999 } else {
2000 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2001 rt2560_stop_locked(sc);
2002 }
2003 RAL_UNLOCK(sc);
2004 if (startall)
2005 ieee80211_start_all(ic);
2006 break;
2007 case SIOCGIFMEDIA:
2008 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
2009 break;
2010 case SIOCGIFADDR:
2011 error = ether_ioctl(ifp, cmd, data);
2012 break;
2013 default:
2014 error = EINVAL;
2015 break;
2016 }
2017 return error;
2018}
2019
2020static void
2021rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val)
2022{
2023 uint32_t tmp;
2024 int ntries;
2025
2026 for (ntries = 0; ntries < 100; ntries++) {
2027 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY))
2028 break;
2029 DELAY(1);
2030 }
2031 if (ntries == 100) {
2032 device_printf(sc->sc_dev, "could not write to BBP\n");
2033 return;
2034 }
2035
2036 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val;
2037 RAL_WRITE(sc, RT2560_BBPCSR, tmp);
2038
2039 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val);
2040}
2041
2042static uint8_t
2043rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg)
2044{
2045 uint32_t val;
2046 int ntries;
2047
2048 for (ntries = 0; ntries < 100; ntries++) {
2049 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY))
2050 break;
2051 DELAY(1);
2052 }
2053 if (ntries == 100) {
2054 device_printf(sc->sc_dev, "could not read from BBP\n");
2055 return 0;
2056 }
2057
2058 val = RT2560_BBP_BUSY | reg << 8;
2059 RAL_WRITE(sc, RT2560_BBPCSR, val);
2060
2061 for (ntries = 0; ntries < 100; ntries++) {
2062 val = RAL_READ(sc, RT2560_BBPCSR);
2063 if (!(val & RT2560_BBP_BUSY))
2064 return val & 0xff;
2065 DELAY(1);
2066 }
2067
2068 device_printf(sc->sc_dev, "could not read from BBP\n");
2069 return 0;
2070}
2071
2072static void
2073rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val)
2074{
2075 uint32_t tmp;
2076 int ntries;
2077
2078 for (ntries = 0; ntries < 100; ntries++) {
2079 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY))
2080 break;
2081 DELAY(1);
2082 }
2083 if (ntries == 100) {
2084 device_printf(sc->sc_dev, "could not write to RF\n");
2085 return;
2086 }
2087
2088 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 |
2089 (reg & 0x3);
2090 RAL_WRITE(sc, RT2560_RFCSR, tmp);
2091
2092 /* remember last written value in sc */
2093 sc->rf_regs[reg] = val;
2094
2095 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff);
2096}
2097
2098static void
2099rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c)
2100{
2101 struct ifnet *ifp = sc->sc_ifp;
2102 struct ieee80211com *ic = ifp->if_l2com;
2103 uint8_t power, tmp;
2104 u_int i, chan;
2105
2106 chan = ieee80211_chan2ieee(ic, c);
2107 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan));
2108
2109 if (IEEE80211_IS_CHAN_2GHZ(c))
2110 power = min(sc->txpow[chan - 1], 31);
2111 else
2112 power = 31;
2113
2114 /* adjust txpower using ifconfig settings */
2115 power -= (100 - ic->ic_txpowlimit) / 8;
2116
2117 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power);
2118
2119 switch (sc->rf_rev) {
2120 case RT2560_RF_2522:
2121 rt2560_rf_write(sc, RAL_RF1, 0x00814);
2122 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]);
2123 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2124 break;
2125
2126 case RT2560_RF_2523:
2127 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2128 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]);
2129 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044);
2130 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2131 break;
2132
2133 case RT2560_RF_2524:
2134 rt2560_rf_write(sc, RAL_RF1, 0x0c808);
2135 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]);
2136 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2137 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2138 break;
2139
2140 case RT2560_RF_2525:
2141 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2142 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]);
2143 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2144 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2145
2146 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2147 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]);
2148 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2149 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2150 break;
2151
2152 case RT2560_RF_2525E:
2153 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2154 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]);
2155 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2156 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282);
2157 break;
2158
2159 case RT2560_RF_2526:
2160 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]);
2161 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2162 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2163
2164 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]);
2165 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2166 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2167 break;
2168
2169 /* dual-band RF */
2170 case RT2560_RF_5222:
2171 for (i = 0; rt2560_rf5222[i].chan != chan; i++);
2172
2173 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1);
2174 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2);
2175 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2176 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4);
2177 break;
2178 default:
2179 printf("unknown ral rev=%d\n", sc->rf_rev);
2180 }
2181
2182 /* XXX */
2183 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) {
2184 /* set Japan filter bit for channel 14 */
2185 tmp = rt2560_bbp_read(sc, 70);
2186
2187 tmp &= ~RT2560_JAPAN_FILTER;
2188 if (chan == 14)
2189 tmp |= RT2560_JAPAN_FILTER;
2190
2191 rt2560_bbp_write(sc, 70, tmp);
2192
2193 /* clear CRC errors */
2194 RAL_READ(sc, RT2560_CNT0);
2195 }
2196}
2197
2198static void
2199rt2560_set_channel(struct ieee80211com *ic)
2200{
2201 struct ifnet *ifp = ic->ic_ifp;
2202 struct rt2560_softc *sc = ifp->if_softc;
2203
2204 RAL_LOCK(sc);
2205 rt2560_set_chan(sc, ic->ic_curchan);
2206 RAL_UNLOCK(sc);
2207
2208}
2209
2210#if 0
2211/*
2212 * Disable RF auto-tuning.
2213 */
2214static void
2215rt2560_disable_rf_tune(struct rt2560_softc *sc)
2216{
2217 uint32_t tmp;
2218
2219 if (sc->rf_rev != RT2560_RF_2523) {
2220 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE;
2221 rt2560_rf_write(sc, RAL_RF1, tmp);
2222 }
2223
2224 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE;
2225 rt2560_rf_write(sc, RAL_RF3, tmp);
2226
2227 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n");
2228}
2229#endif
2230
2231/*
2232 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF
2233 * synchronization.
2234 */
2235static void
2236rt2560_enable_tsf_sync(struct rt2560_softc *sc)
2237{
2238 struct ifnet *ifp = sc->sc_ifp;
2239 struct ieee80211com *ic = ifp->if_l2com;
2240 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2241 uint16_t logcwmin, preload;
2242 uint32_t tmp;
2243
2244 /* first, disable TSF synchronization */
2245 RAL_WRITE(sc, RT2560_CSR14, 0);
2246
2247 tmp = 16 * vap->iv_bss->ni_intval;
2248 RAL_WRITE(sc, RT2560_CSR12, tmp);
2249
2250 RAL_WRITE(sc, RT2560_CSR13, 0);
2251
2252 logcwmin = 5;
2253 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024;
2254 tmp = logcwmin << 16 | preload;
2255 RAL_WRITE(sc, RT2560_BCNOCSR, tmp);
2256
2257 /* finally, enable TSF synchronization */
2258 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN;
2259 if (ic->ic_opmode == IEEE80211_M_STA)
2260 tmp |= RT2560_ENABLE_TSF_SYNC(1);
2261 else
2262 tmp |= RT2560_ENABLE_TSF_SYNC(2) |
2263 RT2560_ENABLE_BEACON_GENERATOR;
2264 RAL_WRITE(sc, RT2560_CSR14, tmp);
2265
2266 DPRINTF(sc, "%s", "enabling TSF synchronization\n");
2267}
2268
2269static void
2270rt2560_enable_tsf(struct rt2560_softc *sc)
2271{
2272 RAL_WRITE(sc, RT2560_CSR14, 0);
2273 RAL_WRITE(sc, RT2560_CSR14,
2274 RT2560_ENABLE_TSF_SYNC(2) | RT2560_ENABLE_TSF);
2275}
2276
2277static void
2278rt2560_update_plcp(struct rt2560_softc *sc)
2279{
2280 struct ifnet *ifp = sc->sc_ifp;
2281 struct ieee80211com *ic = ifp->if_l2com;
2282
2283 /* no short preamble for 1Mbps */
2284 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400);
2285
2286 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) {
2287 /* values taken from the reference driver */
2288 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401);
2289 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402);
2290 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403);
2291 } else {
2292 /* same values as above or'ed 0x8 */
2293 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409);
2294 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a);
2295 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b);
2296 }
2297
2298 DPRINTF(sc, "updating PLCP for %s preamble\n",
2299 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long");
2300}
2301
2302/*
2303 * This function can be called by ieee80211_set_shortslottime(). Refer to
2304 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed.
2305 */
2306static void
2307rt2560_update_slot(struct ifnet *ifp)
2308{
2309 struct rt2560_softc *sc = ifp->if_softc;
2310 struct ieee80211com *ic = ifp->if_l2com;
2311 uint8_t slottime;
2312 uint16_t tx_sifs, tx_pifs, tx_difs, eifs;
2313 uint32_t tmp;
2314
2315#ifndef FORCE_SLOTTIME
2316 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
2317#else
2318 /*
2319 * Setting slot time according to "short slot time" capability
2320 * in beacon/probe_resp seems to cause problem to acknowledge
2321 * certain AP's data frames transimitted at CCK/DS rates: the
2322 * problematic AP keeps retransmitting data frames, probably
2323 * because MAC level acks are not received by hardware.
2324 * So we cheat a little bit here by claiming we are capable of
2325 * "short slot time" but setting hardware slot time to the normal
2326 * slot time. ral(4) does not seem to have trouble to receive
2327 * frames transmitted using short slot time even if hardware
2328 * slot time is set to normal slot time. If we didn't use this
2329 * trick, we would have to claim that short slot time is not
2330 * supported; this would give relative poor RX performance
2331 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short
2332 * slot time.
2333 */
2334 slottime = 20;
2335#endif
2336
2337 /* update the MAC slot boundaries */
2338 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND;
2339 tx_pifs = tx_sifs + slottime;
2340 tx_difs = tx_sifs + 2 * slottime;
2341 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60;
2342
2343 tmp = RAL_READ(sc, RT2560_CSR11);
2344 tmp = (tmp & ~0x1f00) | slottime << 8;
2345 RAL_WRITE(sc, RT2560_CSR11, tmp);
2346
2347 tmp = tx_pifs << 16 | tx_sifs;
2348 RAL_WRITE(sc, RT2560_CSR18, tmp);
2349
2350 tmp = eifs << 16 | tx_difs;
2351 RAL_WRITE(sc, RT2560_CSR19, tmp);
2352
2353 DPRINTF(sc, "setting slottime to %uus\n", slottime);
2354}
2355
2356static void
2357rt2560_set_basicrates(struct rt2560_softc *sc,
2358 const struct ieee80211_rateset *rs)
2359{
2360#define RV(r) ((r) & IEEE80211_RATE_VAL)
2361 struct ifnet *ifp = sc->sc_ifp;
2362 struct ieee80211com *ic = ifp->if_l2com;
2363 uint32_t mask = 0;
2364 uint8_t rate;
2365 int i;
2366
2367 for (i = 0; i < rs->rs_nrates; i++) {
2368 rate = rs->rs_rates[i];
2369
2370 if (!(rate & IEEE80211_RATE_BASIC))
2371 continue;
2372
|