4 * Copyright (c) 2005, 2006
5 * Damien Bergamini <damien.bergamini@free.fr>
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 #include <sys/cdefs.h>
21 __FBSDID("$FreeBSD$");
24 * Ralink Technology RT2560 chipset driver
25 * http://www.ralinktech.com/
28 #include <sys/param.h>
29 #include <sys/sysctl.h>
30 #include <sys/sockio.h>
32 #include <sys/kernel.h>
33 #include <sys/socket.h>
34 #include <sys/systm.h>
35 #include <sys/malloc.h>
37 #include <sys/mutex.h>
38 #include <sys/module.h>
40 #include <sys/endian.h>
42 #include <machine/bus.h>
43 #include <machine/resource.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>
54 #include <net80211/ieee80211_var.h>
55 #include <net80211/ieee80211_radiotap.h>
56 #include <net80211/ieee80211_regdomain.h>
58 #include <netinet/in.h>
59 #include <netinet/in_systm.h>
60 #include <netinet/in_var.h>
61 #include <netinet/ip.h>
62 #include <netinet/if_ether.h>
64 #include <dev/ral/if_ralrate.h>
65 #include <dev/ral/rt2560reg.h>
66 #include <dev/ral/rt2560var.h>
68 #define RT2560_RSSI(sc, rssi) \
69 ((rssi) > (RT2560_NOISE_FLOOR + (sc)->rssi_corr) ? \
70 ((rssi) - RT2560_NOISE_FLOOR - (sc)->rssi_corr) : 0)
73 #define DPRINTF(x) do { if (ral_debug > 0) printf x; } while (0)
74 #define DPRINTFN(n, x) do { if (ral_debug >= (n)) printf x; } while (0)
78 #define DPRINTFN(n, x)
81 static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int,
83 static int rt2560_alloc_tx_ring(struct rt2560_softc *,
84 struct rt2560_tx_ring *, int);
85 static void rt2560_reset_tx_ring(struct rt2560_softc *,
86 struct rt2560_tx_ring *);
87 static void rt2560_free_tx_ring(struct rt2560_softc *,
88 struct rt2560_tx_ring *);
89 static int rt2560_alloc_rx_ring(struct rt2560_softc *,
90 struct rt2560_rx_ring *, int);
91 static void rt2560_reset_rx_ring(struct rt2560_softc *,
92 struct rt2560_rx_ring *);
93 static void rt2560_free_rx_ring(struct rt2560_softc *,
94 struct rt2560_rx_ring *);
95 static struct ieee80211_node *rt2560_node_alloc(
96 struct ieee80211_node_table *);
97 static int rt2560_media_change(struct ifnet *);
98 static void rt2560_iter_func(void *, struct ieee80211_node *);
99 static void rt2560_update_rssadapt(void *);
100 static int rt2560_newstate(struct ieee80211com *,
101 enum ieee80211_state, int);
102 static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t);
103 static void rt2560_encryption_intr(struct rt2560_softc *);
104 static void rt2560_tx_intr(struct rt2560_softc *);
105 static void rt2560_prio_intr(struct rt2560_softc *);
106 static void rt2560_decryption_intr(struct rt2560_softc *);
107 static void rt2560_rx_intr(struct rt2560_softc *);
108 static void rt2560_beacon_expire(struct rt2560_softc *);
109 static void rt2560_wakeup_expire(struct rt2560_softc *);
110 static uint8_t rt2560_rxrate(struct rt2560_rx_desc *);
111 static int rt2560_ack_rate(struct ieee80211com *, int);
112 static void rt2560_scan_start(struct ieee80211com *);
113 static void rt2560_scan_end(struct ieee80211com *);
114 static void rt2560_set_channel(struct ieee80211com *);
115 static uint16_t rt2560_txtime(int, int, uint32_t);
116 static uint8_t rt2560_plcp_signal(int);
117 static void rt2560_setup_tx_desc(struct rt2560_softc *,
118 struct rt2560_tx_desc *, uint32_t, int, int, int,
120 static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *,
121 struct ieee80211_node *);
122 static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *,
123 struct ieee80211_node *);
124 static struct mbuf *rt2560_get_rts(struct rt2560_softc *,
125 struct ieee80211_frame *, uint16_t);
126 static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *,
127 struct ieee80211_node *);
128 static void rt2560_start(struct ifnet *);
129 static void rt2560_watchdog(void *);
130 static int rt2560_reset(struct ifnet *);
131 static int rt2560_ioctl(struct ifnet *, u_long, caddr_t);
132 static void rt2560_bbp_write(struct rt2560_softc *, uint8_t,
134 static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t);
135 static void rt2560_rf_write(struct rt2560_softc *, uint8_t,
137 static void rt2560_set_chan(struct rt2560_softc *,
138 struct ieee80211_channel *);
140 static void rt2560_disable_rf_tune(struct rt2560_softc *);
142 static void rt2560_enable_tsf_sync(struct rt2560_softc *);
143 static void rt2560_update_plcp(struct rt2560_softc *);
144 static void rt2560_update_slot(struct ifnet *);
145 static void rt2560_set_basicrates(struct rt2560_softc *);
146 static void rt2560_update_led(struct rt2560_softc *, int, int);
147 static void rt2560_set_bssid(struct rt2560_softc *, const uint8_t *);
148 static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *);
149 static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *);
150 static void rt2560_update_promisc(struct rt2560_softc *);
151 static const char *rt2560_get_rf(int);
152 static void rt2560_read_eeprom(struct rt2560_softc *);
153 static int rt2560_bbp_init(struct rt2560_softc *);
154 static void rt2560_set_txantenna(struct rt2560_softc *, int);
155 static void rt2560_set_rxantenna(struct rt2560_softc *, int);
156 static void rt2560_init(void *);
157 static int rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *,
158 const struct ieee80211_bpf_params *);
160 static const struct {
163 } rt2560_def_mac[] = {
167 static const struct {
170 } rt2560_def_bbp[] = {
174 static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2;
175 static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2;
176 static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2;
177 static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2;
178 static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2;
179 static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2;
180 static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2;
181 static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2;
183 static const struct {
186 } rt2560_rf5222[] = {
191 rt2560_attach(device_t dev, int id)
193 struct rt2560_softc *sc = device_get_softc(dev);
194 struct ieee80211com *ic = &sc->sc_ic;
200 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
201 MTX_DEF | MTX_RECURSE);
203 callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0);
204 callout_init(&sc->rssadapt_ch, CALLOUT_MPSAFE);
206 /* retrieve RT2560 rev. no */
207 sc->asic_rev = RAL_READ(sc, RT2560_CSR0);
209 /* retrieve MAC address */
210 rt2560_get_macaddr(sc, ic->ic_myaddr);
212 /* retrieve RF rev. no and various other things from EEPROM */
213 rt2560_read_eeprom(sc);
215 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n",
216 sc->asic_rev, rt2560_get_rf(sc->rf_rev));
219 * Allocate Tx and Rx rings.
221 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT);
223 device_printf(sc->sc_dev, "could not allocate Tx ring\n");
227 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT);
229 device_printf(sc->sc_dev, "could not allocate ATIM ring\n");
233 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT);
235 device_printf(sc->sc_dev, "could not allocate Prio ring\n");
239 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT);
241 device_printf(sc->sc_dev, "could not allocate Beacon ring\n");
245 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT);
247 device_printf(sc->sc_dev, "could not allocate Rx ring\n");
251 ifp = sc->sc_ifp = if_alloc(IFT_ETHER);
253 device_printf(sc->sc_dev, "can not if_alloc()\n");
258 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
259 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
260 ifp->if_init = rt2560_init;
261 ifp->if_ioctl = rt2560_ioctl;
262 ifp->if_start = rt2560_start;
263 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
264 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
265 IFQ_SET_READY(&ifp->if_snd);
268 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
269 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */
270 ic->ic_state = IEEE80211_S_INIT;
272 /* set device capabilities */
274 IEEE80211_C_IBSS | /* IBSS mode supported */
275 IEEE80211_C_MONITOR | /* monitor mode supported */
276 IEEE80211_C_HOSTAP | /* HostAp mode supported */
277 IEEE80211_C_TXPMGT | /* tx power management */
278 IEEE80211_C_SHPREAMBLE | /* short preamble supported */
279 IEEE80211_C_SHSLOT | /* short slot time supported */
280 IEEE80211_C_BGSCAN | /* bg scanning support */
281 IEEE80211_C_WPA; /* 802.11i */
284 setbit(&bands, IEEE80211_MODE_11B);
285 setbit(&bands, IEEE80211_MODE_11G);
286 if (sc->rf_rev == RT2560_RF_5222)
287 setbit(&bands, IEEE80211_MODE_11A);
288 ieee80211_init_channels(ic, 0, CTRY_DEFAULT, bands, 0, 1);
290 ieee80211_ifattach(ic);
291 ic->ic_scan_start = rt2560_scan_start;
292 ic->ic_scan_end = rt2560_scan_end;
293 ic->ic_set_channel = rt2560_set_channel;
294 ic->ic_node_alloc = rt2560_node_alloc;
295 ic->ic_updateslot = rt2560_update_slot;
296 ic->ic_reset = rt2560_reset;
297 /* enable s/w bmiss handling in sta mode */
298 ic->ic_flags_ext |= IEEE80211_FEXT_SWBMISS;
300 /* override state transition machine */
301 sc->sc_newstate = ic->ic_newstate;
302 ic->ic_newstate = rt2560_newstate;
303 ic->ic_raw_xmit = rt2560_raw_xmit;
304 ieee80211_media_init(ic, rt2560_media_change, ieee80211_media_status);
306 bpfattach2(ifp, DLT_IEEE802_11_RADIO,
307 sizeof (struct ieee80211_frame) + sizeof (sc->sc_txtap),
310 sc->sc_rxtap_len = sizeof sc->sc_rxtap;
311 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
312 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2560_RX_RADIOTAP_PRESENT);
314 sc->sc_txtap_len = sizeof sc->sc_txtap;
315 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
316 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2560_TX_RADIOTAP_PRESENT);
319 * Add a few sysctl knobs.
323 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
324 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
325 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)");
327 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
328 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
329 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)");
331 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
332 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "dwell",
333 CTLFLAG_RW, &sc->dwelltime, 0,
334 "channel dwell time (ms) for AP/station scanning");
337 ieee80211_announce(ic);
341 fail6: rt2560_free_rx_ring(sc, &sc->rxq);
342 fail5: rt2560_free_tx_ring(sc, &sc->bcnq);
343 fail4: rt2560_free_tx_ring(sc, &sc->prioq);
344 fail3: rt2560_free_tx_ring(sc, &sc->atimq);
345 fail2: rt2560_free_tx_ring(sc, &sc->txq);
346 fail1: mtx_destroy(&sc->sc_mtx);
352 rt2560_detach(void *xsc)
354 struct rt2560_softc *sc = xsc;
355 struct ieee80211com *ic = &sc->sc_ic;
356 struct ifnet *ifp = ic->ic_ifp;
359 callout_stop(&sc->watchdog_ch);
360 callout_stop(&sc->rssadapt_ch);
363 ieee80211_ifdetach(ic);
365 rt2560_free_tx_ring(sc, &sc->txq);
366 rt2560_free_tx_ring(sc, &sc->atimq);
367 rt2560_free_tx_ring(sc, &sc->prioq);
368 rt2560_free_tx_ring(sc, &sc->bcnq);
369 rt2560_free_rx_ring(sc, &sc->rxq);
373 mtx_destroy(&sc->sc_mtx);
379 rt2560_resume(void *xsc)
381 struct rt2560_softc *sc = xsc;
382 struct ifnet *ifp = sc->sc_ic.ic_ifp;
384 if (ifp->if_flags & IFF_UP) {
385 ifp->if_init(ifp->if_softc);
386 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
392 rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
397 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
399 *(bus_addr_t *)arg = segs[0].ds_addr;
403 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring,
410 ring->cur = ring->next = 0;
411 ring->cur_encrypt = ring->next_encrypt = 0;
413 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
414 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
415 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE,
416 0, NULL, NULL, &ring->desc_dmat);
418 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
422 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
423 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
425 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
429 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
430 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
433 device_printf(sc->sc_dev, "could not load desc DMA map\n");
437 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF,
439 if (ring->data == NULL) {
440 device_printf(sc->sc_dev, "could not allocate soft data\n");
445 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
446 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
447 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL,
450 device_printf(sc->sc_dev, "could not create data DMA tag\n");
454 for (i = 0; i < count; i++) {
455 error = bus_dmamap_create(ring->data_dmat, 0,
458 device_printf(sc->sc_dev, "could not create DMA map\n");
465 fail: rt2560_free_tx_ring(sc, ring);
470 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
472 struct rt2560_tx_desc *desc;
473 struct rt2560_tx_data *data;
476 for (i = 0; i < ring->count; i++) {
477 desc = &ring->desc[i];
478 data = &ring->data[i];
480 if (data->m != NULL) {
481 bus_dmamap_sync(ring->data_dmat, data->map,
482 BUS_DMASYNC_POSTWRITE);
483 bus_dmamap_unload(ring->data_dmat, data->map);
488 if (data->ni != NULL) {
489 ieee80211_free_node(data->ni);
496 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
499 ring->cur = ring->next = 0;
500 ring->cur_encrypt = ring->next_encrypt = 0;
504 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
506 struct rt2560_tx_data *data;
509 if (ring->desc != NULL) {
510 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
511 BUS_DMASYNC_POSTWRITE);
512 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
513 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
516 if (ring->desc_dmat != NULL)
517 bus_dma_tag_destroy(ring->desc_dmat);
519 if (ring->data != NULL) {
520 for (i = 0; i < ring->count; i++) {
521 data = &ring->data[i];
523 if (data->m != NULL) {
524 bus_dmamap_sync(ring->data_dmat, data->map,
525 BUS_DMASYNC_POSTWRITE);
526 bus_dmamap_unload(ring->data_dmat, data->map);
530 if (data->ni != NULL)
531 ieee80211_free_node(data->ni);
533 if (data->map != NULL)
534 bus_dmamap_destroy(ring->data_dmat, data->map);
537 free(ring->data, M_DEVBUF);
540 if (ring->data_dmat != NULL)
541 bus_dma_tag_destroy(ring->data_dmat);
545 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring,
548 struct rt2560_rx_desc *desc;
549 struct rt2560_rx_data *data;
554 ring->cur = ring->next = 0;
555 ring->cur_decrypt = 0;
557 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
558 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
559 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE,
560 0, NULL, NULL, &ring->desc_dmat);
562 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
566 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
567 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
569 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
573 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
574 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
577 device_printf(sc->sc_dev, "could not load desc DMA map\n");
581 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF,
583 if (ring->data == NULL) {
584 device_printf(sc->sc_dev, "could not allocate soft data\n");
590 * Pre-allocate Rx buffers and populate Rx ring.
592 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
593 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
594 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
596 device_printf(sc->sc_dev, "could not create data DMA tag\n");
600 for (i = 0; i < count; i++) {
601 desc = &sc->rxq.desc[i];
602 data = &sc->rxq.data[i];
604 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
606 device_printf(sc->sc_dev, "could not create DMA map\n");
610 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
611 if (data->m == NULL) {
612 device_printf(sc->sc_dev,
613 "could not allocate rx mbuf\n");
618 error = bus_dmamap_load(ring->data_dmat, data->map,
619 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr,
622 device_printf(sc->sc_dev,
623 "could not load rx buf DMA map");
627 desc->flags = htole32(RT2560_RX_BUSY);
628 desc->physaddr = htole32(physaddr);
631 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
635 fail: rt2560_free_rx_ring(sc, ring);
640 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
644 for (i = 0; i < ring->count; i++) {
645 ring->desc[i].flags = htole32(RT2560_RX_BUSY);
646 ring->data[i].drop = 0;
649 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
651 ring->cur = ring->next = 0;
652 ring->cur_decrypt = 0;
656 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
658 struct rt2560_rx_data *data;
661 if (ring->desc != NULL) {
662 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
663 BUS_DMASYNC_POSTWRITE);
664 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
665 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
668 if (ring->desc_dmat != NULL)
669 bus_dma_tag_destroy(ring->desc_dmat);
671 if (ring->data != NULL) {
672 for (i = 0; i < ring->count; i++) {
673 data = &ring->data[i];
675 if (data->m != NULL) {
676 bus_dmamap_sync(ring->data_dmat, data->map,
677 BUS_DMASYNC_POSTREAD);
678 bus_dmamap_unload(ring->data_dmat, data->map);
682 if (data->map != NULL)
683 bus_dmamap_destroy(ring->data_dmat, data->map);
686 free(ring->data, M_DEVBUF);
689 if (ring->data_dmat != NULL)
690 bus_dma_tag_destroy(ring->data_dmat);
693 static struct ieee80211_node *
694 rt2560_node_alloc(struct ieee80211_node_table *nt)
696 struct rt2560_node *rn;
698 rn = malloc(sizeof (struct rt2560_node), M_80211_NODE,
701 return (rn != NULL) ? &rn->ni : NULL;
705 rt2560_media_change(struct ifnet *ifp)
707 struct rt2560_softc *sc = ifp->if_softc;
710 error = ieee80211_media_change(ifp);
712 if (error == ENETRESET) {
713 if ((ifp->if_flags & IFF_UP) &&
714 (ifp->if_drv_flags & IFF_DRV_RUNNING))
721 * This function is called for each node present in the node station table.
724 rt2560_iter_func(void *arg, struct ieee80211_node *ni)
726 struct rt2560_node *rn = (struct rt2560_node *)ni;
728 ral_rssadapt_updatestats(&rn->rssadapt);
732 * This function is called periodically (every 100ms) in RUN state to update
733 * the rate adaptation statistics.
736 rt2560_update_rssadapt(void *arg)
738 struct rt2560_softc *sc = arg;
739 struct ieee80211com *ic = &sc->sc_ic;
743 ieee80211_iterate_nodes(&ic->ic_sta, rt2560_iter_func, arg);
744 callout_reset(&sc->rssadapt_ch, hz / 10, rt2560_update_rssadapt, sc);
750 rt2560_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
752 struct rt2560_softc *sc = ic->ic_ifp->if_softc;
753 enum ieee80211_state ostate;
754 struct ieee80211_node *ni;
758 ostate = ic->ic_state;
761 case IEEE80211_S_INIT:
762 callout_stop(&sc->rssadapt_ch);
764 if (ostate == IEEE80211_S_RUN) {
765 /* abort TSF synchronization */
766 RAL_WRITE(sc, RT2560_CSR14, 0);
768 /* turn association led off */
769 rt2560_update_led(sc, 0, 0);
772 case IEEE80211_S_RUN:
775 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
776 rt2560_update_plcp(sc);
777 rt2560_set_basicrates(sc);
778 rt2560_set_bssid(sc, ni->ni_bssid);
781 if (ic->ic_opmode == IEEE80211_M_HOSTAP ||
782 ic->ic_opmode == IEEE80211_M_IBSS) {
783 m = ieee80211_beacon_alloc(ic, ni, &sc->sc_bo);
785 device_printf(sc->sc_dev,
786 "could not allocate beacon\n");
791 ieee80211_ref_node(ni);
792 error = rt2560_tx_bcn(sc, m, ni);
797 /* turn assocation led on */
798 rt2560_update_led(sc, 1, 0);
800 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
801 callout_reset(&sc->rssadapt_ch, hz / 10,
802 rt2560_update_rssadapt, sc);
804 rt2560_enable_tsf_sync(sc);
807 case IEEE80211_S_SCAN:
808 case IEEE80211_S_AUTH:
809 case IEEE80211_S_ASSOC:
813 return (error != 0) ? error : sc->sc_newstate(ic, nstate, arg);
817 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or
821 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr)
827 /* clock C once before the first command */
828 RT2560_EEPROM_CTL(sc, 0);
830 RT2560_EEPROM_CTL(sc, RT2560_S);
831 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
832 RT2560_EEPROM_CTL(sc, RT2560_S);
834 /* write start bit (1) */
835 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
836 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
838 /* write READ opcode (10) */
839 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
840 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
841 RT2560_EEPROM_CTL(sc, RT2560_S);
842 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
844 /* write address (A5-A0 or A7-A0) */
845 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7;
846 for (; n >= 0; n--) {
847 RT2560_EEPROM_CTL(sc, RT2560_S |
848 (((addr >> n) & 1) << RT2560_SHIFT_D));
849 RT2560_EEPROM_CTL(sc, RT2560_S |
850 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C);
853 RT2560_EEPROM_CTL(sc, RT2560_S);
855 /* read data Q15-Q0 */
857 for (n = 15; n >= 0; n--) {
858 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
859 tmp = RAL_READ(sc, RT2560_CSR21);
860 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n;
861 RT2560_EEPROM_CTL(sc, RT2560_S);
864 RT2560_EEPROM_CTL(sc, 0);
866 /* clear Chip Select and clock C */
867 RT2560_EEPROM_CTL(sc, RT2560_S);
868 RT2560_EEPROM_CTL(sc, 0);
869 RT2560_EEPROM_CTL(sc, RT2560_C);
875 * Some frames were processed by the hardware cipher engine and are ready for
879 rt2560_encryption_intr(struct rt2560_softc *sc)
881 struct rt2560_tx_desc *desc;
884 /* retrieve last descriptor index processed by cipher engine */
885 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr;
886 hw /= RT2560_TX_DESC_SIZE;
888 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
889 BUS_DMASYNC_POSTREAD);
891 for (; sc->txq.next_encrypt != hw;) {
892 desc = &sc->txq.desc[sc->txq.next_encrypt];
894 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
895 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY))
898 /* for TKIP, swap eiv field to fix a bug in ASIC */
899 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) ==
900 RT2560_TX_CIPHER_TKIP)
901 desc->eiv = bswap32(desc->eiv);
903 /* mark the frame ready for transmission */
904 desc->flags |= htole32(RT2560_TX_BUSY | RT2560_TX_VALID);
906 DPRINTFN(15, ("encryption done idx=%u\n",
907 sc->txq.next_encrypt));
909 sc->txq.next_encrypt =
910 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT;
913 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
914 BUS_DMASYNC_PREWRITE);
917 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX);
921 rt2560_tx_intr(struct rt2560_softc *sc)
923 struct ieee80211com *ic = &sc->sc_ic;
924 struct ifnet *ifp = ic->ic_ifp;
925 struct rt2560_tx_desc *desc;
926 struct rt2560_tx_data *data;
927 struct rt2560_node *rn;
929 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
930 BUS_DMASYNC_POSTREAD);
933 desc = &sc->txq.desc[sc->txq.next];
934 data = &sc->txq.data[sc->txq.next];
936 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
937 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY) ||
938 !(le32toh(desc->flags) & RT2560_TX_VALID))
941 rn = (struct rt2560_node *)data->ni;
943 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) {
944 case RT2560_TX_SUCCESS:
945 DPRINTFN(10, ("data frame sent successfully\n"));
946 if (data->id.id_node != NULL) {
947 ral_rssadapt_raise_rate(ic, &rn->rssadapt,
953 case RT2560_TX_SUCCESS_RETRY:
954 DPRINTFN(9, ("data frame sent after %u retries\n",
955 (le32toh(desc->flags) >> 5) & 0x7));
959 case RT2560_TX_FAIL_RETRY:
960 DPRINTFN(9, ("sending data frame failed (too much "
962 if (data->id.id_node != NULL) {
963 ral_rssadapt_lower_rate(ic, data->ni,
964 &rn->rssadapt, &data->id);
969 case RT2560_TX_FAIL_INVALID:
970 case RT2560_TX_FAIL_OTHER:
972 device_printf(sc->sc_dev, "sending data frame failed "
973 "0x%08x\n", le32toh(desc->flags));
977 bus_dmamap_sync(sc->txq.data_dmat, data->map,
978 BUS_DMASYNC_POSTWRITE);
979 bus_dmamap_unload(sc->txq.data_dmat, data->map);
982 ieee80211_free_node(data->ni);
985 /* descriptor is no longer valid */
986 desc->flags &= ~htole32(RT2560_TX_VALID);
988 DPRINTFN(15, ("tx done idx=%u\n", sc->txq.next));
991 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT;
994 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
995 BUS_DMASYNC_PREWRITE);
998 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1003 rt2560_prio_intr(struct rt2560_softc *sc)
1005 struct ieee80211com *ic = &sc->sc_ic;
1006 struct ifnet *ifp = ic->ic_ifp;
1007 struct rt2560_tx_desc *desc;
1008 struct rt2560_tx_data *data;
1009 struct ieee80211_node *ni;
1013 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1014 BUS_DMASYNC_POSTREAD);
1017 desc = &sc->prioq.desc[sc->prioq.next];
1018 data = &sc->prioq.data[sc->prioq.next];
1020 flags = le32toh(desc->flags);
1021 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0)
1024 switch (flags & RT2560_TX_RESULT_MASK) {
1025 case RT2560_TX_SUCCESS:
1026 DPRINTFN(10, ("mgt frame sent successfully\n"));
1029 case RT2560_TX_SUCCESS_RETRY:
1030 DPRINTFN(9, ("mgt frame sent after %u retries\n",
1031 (flags >> 5) & 0x7));
1034 case RT2560_TX_FAIL_RETRY:
1035 DPRINTFN(9, ("sending mgt frame failed (too much "
1039 case RT2560_TX_FAIL_INVALID:
1040 case RT2560_TX_FAIL_OTHER:
1042 device_printf(sc->sc_dev, "sending mgt frame failed "
1047 bus_dmamap_sync(sc->prioq.data_dmat, data->map,
1048 BUS_DMASYNC_POSTWRITE);
1049 bus_dmamap_unload(sc->prioq.data_dmat, data->map);
1056 /* descriptor is no longer valid */
1057 desc->flags &= ~htole32(RT2560_TX_VALID);
1059 DPRINTFN(15, ("prio done idx=%u\n", sc->prioq.next));
1062 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT;
1064 if (m->m_flags & M_TXCB)
1065 ieee80211_process_callback(ni, m,
1066 (flags & RT2560_TX_RESULT_MASK) &~
1067 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY));
1069 ieee80211_free_node(ni);
1072 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1073 BUS_DMASYNC_PREWRITE);
1075 sc->sc_tx_timer = 0;
1076 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1081 * Some frames were processed by the hardware cipher engine and are ready for
1082 * transmission to the IEEE802.11 layer.
1085 rt2560_decryption_intr(struct rt2560_softc *sc)
1087 struct ieee80211com *ic = &sc->sc_ic;
1088 struct ifnet *ifp = ic->ic_ifp;
1089 struct rt2560_rx_desc *desc;
1090 struct rt2560_rx_data *data;
1091 bus_addr_t physaddr;
1092 struct ieee80211_frame *wh;
1093 struct ieee80211_node *ni;
1094 struct rt2560_node *rn;
1095 struct mbuf *mnew, *m;
1098 /* retrieve last decriptor index processed by cipher engine */
1099 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr;
1100 hw /= RT2560_RX_DESC_SIZE;
1102 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1103 BUS_DMASYNC_POSTREAD);
1105 for (; sc->rxq.cur_decrypt != hw;) {
1106 desc = &sc->rxq.desc[sc->rxq.cur_decrypt];
1107 data = &sc->rxq.data[sc->rxq.cur_decrypt];
1109 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1110 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1118 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 &&
1119 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) {
1125 * Try to allocate a new mbuf for this ring element and load it
1126 * before processing the current mbuf. If the ring element
1127 * cannot be loaded, drop the received packet and reuse the old
1128 * mbuf. In the unlikely case that the old mbuf can't be
1129 * reloaded either, explicitly panic.
1131 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1137 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1138 BUS_DMASYNC_POSTREAD);
1139 bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1141 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1142 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr,
1147 /* try to reload the old mbuf */
1148 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1149 mtod(data->m, void *), MCLBYTES,
1150 rt2560_dma_map_addr, &physaddr, 0);
1152 /* very unlikely that it will fail... */
1153 panic("%s: could not load old rx mbuf",
1154 device_get_name(sc->sc_dev));
1161 * New mbuf successfully loaded, update Rx ring and continue
1166 desc->physaddr = htole32(physaddr);
1169 m->m_pkthdr.rcvif = ifp;
1170 m->m_pkthdr.len = m->m_len =
1171 (le32toh(desc->flags) >> 16) & 0xfff;
1173 if (bpf_peers_present(sc->sc_drvbpf)) {
1174 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap;
1175 uint32_t tsf_lo, tsf_hi;
1177 /* get timestamp (low and high 32 bits) */
1178 tsf_hi = RAL_READ(sc, RT2560_CSR17);
1179 tsf_lo = RAL_READ(sc, RT2560_CSR16);
1182 htole64(((uint64_t)tsf_hi << 32) | tsf_lo);
1184 tap->wr_rate = rt2560_rxrate(desc);
1185 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
1186 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
1187 tap->wr_antenna = sc->rx_ant;
1188 tap->wr_antsignal = RT2560_RSSI(sc, desc->rssi);
1190 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m);
1193 sc->sc_flags |= RAL_INPUT_RUNNING;
1195 wh = mtod(m, struct ieee80211_frame *);
1196 ni = ieee80211_find_rxnode(ic,
1197 (struct ieee80211_frame_min *)wh);
1199 /* send the frame to the 802.11 layer */
1200 ieee80211_input(ic, m, ni, RT2560_RSSI(sc, desc->rssi),
1201 RT2560_NOISE_FLOOR, 0);
1203 /* give rssi to the rate adatation algorithm */
1204 rn = (struct rt2560_node *)ni;
1205 ral_rssadapt_input(ic, ni, &rn->rssadapt,
1206 RT2560_RSSI(sc, desc->rssi));
1208 /* node is no longer needed */
1209 ieee80211_free_node(ni);
1212 sc->sc_flags &= ~RAL_INPUT_RUNNING;
1213 skip: desc->flags = htole32(RT2560_RX_BUSY);
1215 DPRINTFN(15, ("decryption done idx=%u\n", sc->rxq.cur_decrypt));
1217 sc->rxq.cur_decrypt =
1218 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT;
1221 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1222 BUS_DMASYNC_PREWRITE);
1226 * Some frames were received. Pass them to the hardware cipher engine before
1227 * sending them to the 802.11 layer.
1230 rt2560_rx_intr(struct rt2560_softc *sc)
1232 struct rt2560_rx_desc *desc;
1233 struct rt2560_rx_data *data;
1235 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1236 BUS_DMASYNC_POSTREAD);
1239 desc = &sc->rxq.desc[sc->rxq.cur];
1240 data = &sc->rxq.data[sc->rxq.cur];
1242 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1243 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1248 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) ||
1249 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) {
1251 * This should not happen since we did not request
1252 * to receive those frames when we filled RXCSR0.
1254 DPRINTFN(5, ("PHY or CRC error flags 0x%08x\n",
1255 le32toh(desc->flags)));
1259 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) {
1260 DPRINTFN(5, ("bad length\n"));
1264 /* mark the frame for decryption */
1265 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY);
1267 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1269 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT;
1272 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1273 BUS_DMASYNC_PREWRITE);
1276 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT);
1280 * This function is called periodically in IBSS mode when a new beacon must be
1284 rt2560_beacon_expire(struct rt2560_softc *sc)
1286 struct ieee80211com *ic = &sc->sc_ic;
1287 struct rt2560_tx_data *data;
1289 if (ic->ic_opmode != IEEE80211_M_IBSS &&
1290 ic->ic_opmode != IEEE80211_M_HOSTAP)
1293 data = &sc->bcnq.data[sc->bcnq.next];
1295 * Don't send beacon if bsschan isn't set
1297 if (data->ni == NULL)
1300 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
1301 bus_dmamap_unload(sc->bcnq.data_dmat, data->map);
1303 ieee80211_beacon_update(ic, data->ni, &sc->sc_bo, data->m, 1);
1305 if (bpf_peers_present(ic->ic_rawbpf))
1306 bpf_mtap(ic->ic_rawbpf, data->m);
1308 rt2560_tx_bcn(sc, data->m, data->ni);
1310 DPRINTFN(15, ("beacon expired\n"));
1312 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT;
1317 rt2560_wakeup_expire(struct rt2560_softc *sc)
1319 DPRINTFN(2, ("wakeup expired\n"));
1323 rt2560_intr(void *arg)
1325 struct rt2560_softc *sc = arg;
1326 struct ifnet *ifp = sc->sc_ifp;
1331 /* disable interrupts */
1332 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
1334 /* don't re-enable interrupts if we're shutting down */
1335 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1340 r = RAL_READ(sc, RT2560_CSR7);
1341 RAL_WRITE(sc, RT2560_CSR7, r);
1343 if (r & RT2560_BEACON_EXPIRE)
1344 rt2560_beacon_expire(sc);
1346 if (r & RT2560_WAKEUP_EXPIRE)
1347 rt2560_wakeup_expire(sc);
1349 if (r & RT2560_ENCRYPTION_DONE)
1350 rt2560_encryption_intr(sc);
1352 if (r & RT2560_TX_DONE)
1355 if (r & RT2560_PRIO_DONE)
1356 rt2560_prio_intr(sc);
1358 if (r & RT2560_DECRYPTION_DONE)
1359 rt2560_decryption_intr(sc);
1361 if (r & RT2560_RX_DONE)
1364 /* re-enable interrupts */
1365 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
1370 /* quickly determine if a given rate is CCK or OFDM */
1371 #define RAL_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
1373 #define RAL_ACK_SIZE 14 /* 10 + 4(FCS) */
1374 #define RAL_CTS_SIZE 14 /* 10 + 4(FCS) */
1376 #define RAL_SIFS 10 /* us */
1378 #define RT2560_TXRX_TURNAROUND 10 /* us */
1381 * This function is only used by the Rx radiotap code.
1384 rt2560_rxrate(struct rt2560_rx_desc *desc)
1386 if (le32toh(desc->flags) & RT2560_RX_OFDM) {
1387 /* reverse function of rt2560_plcp_signal */
1388 switch (desc->rate) {
1389 case 0xb: return 12;
1390 case 0xf: return 18;
1391 case 0xa: return 24;
1392 case 0xe: return 36;
1393 case 0x9: return 48;
1394 case 0xd: return 72;
1395 case 0x8: return 96;
1396 case 0xc: return 108;
1399 if (desc->rate == 10)
1401 if (desc->rate == 20)
1403 if (desc->rate == 55)
1405 if (desc->rate == 110)
1408 return 2; /* should not get there */
1412 * Return the expected ack rate for a frame transmitted at rate `rate'.
1413 * XXX: this should depend on the destination node basic rate set.
1416 rt2560_ack_rate(struct ieee80211com *ic, int rate)
1425 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate;
1441 /* default to 1Mbps */
1446 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'.
1447 * The function automatically determines the operating mode depending on the
1448 * given rate. `flags' indicates whether short preamble is in use or not.
1451 rt2560_txtime(int len, int rate, uint32_t flags)
1455 if (RAL_RATE_IS_OFDM(rate)) {
1456 /* IEEE Std 802.11a-1999, pp. 37 */
1457 txtime = (8 + 4 * len + 3 + rate - 1) / rate;
1458 txtime = 16 + 4 + 4 * txtime + 6;
1460 /* IEEE Std 802.11b-1999, pp. 28 */
1461 txtime = (16 * len + rate - 1) / rate;
1462 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE))
1472 rt2560_plcp_signal(int rate)
1475 /* CCK rates (returned values are device-dependent) */
1478 case 11: return 0x2;
1479 case 22: return 0x3;
1481 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1482 case 12: return 0xb;
1483 case 18: return 0xf;
1484 case 24: return 0xa;
1485 case 36: return 0xe;
1486 case 48: return 0x9;
1487 case 72: return 0xd;
1488 case 96: return 0x8;
1489 case 108: return 0xc;
1491 /* unsupported rates (should not get there) */
1492 default: return 0xff;
1497 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc,
1498 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr)
1500 struct ieee80211com *ic = &sc->sc_ic;
1501 uint16_t plcp_length;
1504 desc->flags = htole32(flags);
1505 desc->flags |= htole32(len << 16);
1506 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) :
1507 htole32(RT2560_TX_BUSY | RT2560_TX_VALID);
1509 desc->physaddr = htole32(physaddr);
1510 desc->wme = htole16(
1512 RT2560_LOGCWMIN(3) |
1513 RT2560_LOGCWMAX(8));
1515 /* setup PLCP fields */
1516 desc->plcp_signal = rt2560_plcp_signal(rate);
1517 desc->plcp_service = 4;
1519 len += IEEE80211_CRC_LEN;
1520 if (RAL_RATE_IS_OFDM(rate)) {
1521 desc->flags |= htole32(RT2560_TX_OFDM);
1523 plcp_length = len & 0xfff;
1524 desc->plcp_length_hi = plcp_length >> 6;
1525 desc->plcp_length_lo = plcp_length & 0x3f;
1527 plcp_length = (16 * len + rate - 1) / rate;
1529 remainder = (16 * len) % 22;
1530 if (remainder != 0 && remainder < 7)
1531 desc->plcp_service |= RT2560_PLCP_LENGEXT;
1533 desc->plcp_length_hi = plcp_length >> 8;
1534 desc->plcp_length_lo = plcp_length & 0xff;
1536 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1537 desc->plcp_signal |= 0x08;
1542 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0,
1543 struct ieee80211_node *ni)
1545 struct ieee80211com *ic = &sc->sc_ic;
1546 struct rt2560_tx_desc *desc;
1547 struct rt2560_tx_data *data;
1548 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1549 int nsegs, rate, error;
1551 desc = &sc->bcnq.desc[sc->bcnq.cur];
1552 data = &sc->bcnq.data[sc->bcnq.cur];
1554 rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2;
1556 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0,
1557 segs, &nsegs, BUS_DMA_NOWAIT);
1559 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1565 if (bpf_peers_present(sc->sc_drvbpf)) {
1566 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1569 tap->wt_rate = rate;
1570 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1571 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1572 tap->wt_antenna = sc->tx_ant;
1574 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1580 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF |
1581 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr);
1583 DPRINTFN(10, ("sending beacon frame len=%u idx=%u rate=%u\n",
1584 m0->m_pkthdr.len, sc->bcnq.cur, rate));
1586 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1587 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map,
1588 BUS_DMASYNC_PREWRITE);
1590 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT;
1596 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0,
1597 struct ieee80211_node *ni)
1599 struct ieee80211com *ic = &sc->sc_ic;
1600 struct rt2560_tx_desc *desc;
1601 struct rt2560_tx_data *data;
1602 struct ieee80211_frame *wh;
1603 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1606 int nsegs, rate, error;
1608 desc = &sc->prioq.desc[sc->prioq.cur];
1609 data = &sc->prioq.data[sc->prioq.cur];
1611 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1613 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
1616 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1622 if (bpf_peers_present(sc->sc_drvbpf)) {
1623 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1626 tap->wt_rate = rate;
1627 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1628 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1629 tap->wt_antenna = sc->tx_ant;
1631 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1637 wh = mtod(m0, struct ieee80211_frame *);
1639 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1640 flags |= RT2560_TX_ACK;
1642 dur = rt2560_txtime(RAL_ACK_SIZE, rate, ic->ic_flags) +
1644 *(uint16_t *)wh->i_dur = htole16(dur);
1646 /* tell hardware to add timestamp for probe responses */
1647 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
1648 IEEE80211_FC0_TYPE_MGT &&
1649 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) ==
1650 IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1651 flags |= RT2560_TX_TIMESTAMP;
1654 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0,
1657 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1658 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1659 BUS_DMASYNC_PREWRITE);
1661 DPRINTFN(10, ("sending mgt frame len=%u idx=%u rate=%u\n",
1662 m0->m_pkthdr.len, sc->prioq.cur, rate));
1666 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1667 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1673 rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0,
1674 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
1676 struct ieee80211com *ic = &sc->sc_ic;
1677 struct rt2560_tx_desc *desc;
1678 struct rt2560_tx_data *data;
1679 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1681 int nsegs, rate, error;
1683 desc = &sc->prioq.desc[sc->prioq.cur];
1684 data = &sc->prioq.data[sc->prioq.cur];
1686 rate = params->ibp_rate0 & IEEE80211_RATE_VAL;
1693 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
1696 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1702 if (bpf_peers_present(sc->sc_drvbpf)) {
1703 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1706 tap->wt_rate = rate;
1707 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1708 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1709 tap->wt_antenna = sc->tx_ant;
1711 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1718 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
1719 flags |= RT2560_TX_ACK;
1721 /* XXX need to setup descriptor ourself */
1722 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len,
1723 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0,
1726 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1727 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1728 BUS_DMASYNC_PREWRITE);
1730 DPRINTFN(10, ("sending raw frame len=%u idx=%u rate=%u\n",
1731 m0->m_pkthdr.len, sc->prioq.cur, rate));
1735 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1736 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1742 * Build a RTS control frame.
1744 static struct mbuf *
1745 rt2560_get_rts(struct rt2560_softc *sc, struct ieee80211_frame *wh,
1748 struct ieee80211_frame_rts *rts;
1751 MGETHDR(m, M_DONTWAIT, MT_DATA);
1753 sc->sc_ic.ic_stats.is_tx_nobuf++;
1754 device_printf(sc->sc_dev, "could not allocate RTS frame\n");
1758 rts = mtod(m, struct ieee80211_frame_rts *);
1760 rts->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_CTL |
1761 IEEE80211_FC0_SUBTYPE_RTS;
1762 rts->i_fc[1] = IEEE80211_FC1_DIR_NODS;
1763 *(uint16_t *)rts->i_dur = htole16(dur);
1764 IEEE80211_ADDR_COPY(rts->i_ra, wh->i_addr1);
1765 IEEE80211_ADDR_COPY(rts->i_ta, wh->i_addr2);
1767 m->m_pkthdr.len = m->m_len = sizeof (struct ieee80211_frame_rts);
1773 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0,
1774 struct ieee80211_node *ni)
1776 struct ieee80211com *ic = &sc->sc_ic;
1777 struct rt2560_tx_desc *desc;
1778 struct rt2560_tx_data *data;
1779 struct rt2560_node *rn;
1780 struct ieee80211_frame *wh;
1781 struct ieee80211_key *k;
1783 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1786 int nsegs, rate, error;
1788 wh = mtod(m0, struct ieee80211_frame *);
1790 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
1791 rate = ic->ic_fixed_rate;
1793 struct ieee80211_rateset *rs;
1796 rn = (struct rt2560_node *)ni;
1797 ni->ni_txrate = ral_rssadapt_choose(&rn->rssadapt, rs, wh,
1798 m0->m_pkthdr.len, NULL, 0);
1799 rate = rs->rs_rates[ni->ni_txrate];
1801 rate &= IEEE80211_RATE_VAL;
1803 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1804 k = ieee80211_crypto_encap(ic, ni, m0);
1810 /* packet header may have moved, reset our local pointer */
1811 wh = mtod(m0, struct ieee80211_frame *);
1815 * IEEE Std 802.11-1999, pp 82: "A STA shall use an RTS/CTS exchange
1816 * for directed frames only when the length of the MPDU is greater
1817 * than the length threshold indicated by [...]" ic_rtsthreshold.
1819 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) &&
1820 m0->m_pkthdr.len > ic->ic_rtsthreshold) {
1823 int rtsrate, ackrate;
1825 rtsrate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1826 ackrate = rt2560_ack_rate(ic, rate);
1828 dur = rt2560_txtime(m0->m_pkthdr.len + 4, rate, ic->ic_flags) +
1829 rt2560_txtime(RAL_CTS_SIZE, rtsrate, ic->ic_flags) +
1830 rt2560_txtime(RAL_ACK_SIZE, ackrate, ic->ic_flags) +
1833 m = rt2560_get_rts(sc, wh, dur);
1835 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1836 data = &sc->txq.data[sc->txq.cur_encrypt];
1838 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
1839 m, segs, &nsegs, 0);
1841 device_printf(sc->sc_dev,
1842 "could not map mbuf (error %d)\n", error);
1848 /* avoid multiple free() of the same node for each fragment */
1849 ieee80211_ref_node(ni);
1854 /* RTS frames are not taken into account for rssadapt */
1855 data->id.id_node = NULL;
1857 rt2560_setup_tx_desc(sc, desc, RT2560_TX_ACK |
1858 RT2560_TX_MORE_FRAG, m->m_pkthdr.len, rtsrate, 1,
1861 bus_dmamap_sync(sc->txq.data_dmat, data->map,
1862 BUS_DMASYNC_PREWRITE);
1865 sc->txq.cur_encrypt =
1866 (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1869 * IEEE Std 802.11-1999: when an RTS/CTS exchange is used, the
1870 * asynchronous data frame shall be transmitted after the CTS
1871 * frame and a SIFS period.
1873 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS;
1876 data = &sc->txq.data[sc->txq.cur_encrypt];
1877 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1879 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0,
1881 if (error != 0 && error != EFBIG) {
1882 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1888 mnew = m_defrag(m0, M_DONTWAIT);
1890 device_printf(sc->sc_dev,
1891 "could not defragment mbuf\n");
1897 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
1898 m0, segs, &nsegs, 0);
1900 device_printf(sc->sc_dev,
1901 "could not map mbuf (error %d)\n", error);
1906 /* packet header may have moved, reset our local pointer */
1907 wh = mtod(m0, struct ieee80211_frame *);
1910 if (bpf_peers_present(sc->sc_drvbpf)) {
1911 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1914 tap->wt_rate = rate;
1915 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1916 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1917 tap->wt_antenna = sc->tx_ant;
1919 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1925 /* remember link conditions for rate adaptation algorithm */
1926 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) {
1927 data->id.id_len = m0->m_pkthdr.len;
1928 data->id.id_rateidx = ni->ni_txrate;
1929 data->id.id_node = ni;
1930 data->id.id_rssi = ni->ni_rssi;
1932 data->id.id_node = NULL;
1934 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1935 flags |= RT2560_TX_ACK;
1937 dur = rt2560_txtime(RAL_ACK_SIZE, rt2560_ack_rate(ic, rate),
1938 ic->ic_flags) + RAL_SIFS;
1939 *(uint16_t *)wh->i_dur = htole16(dur);
1942 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1,
1945 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1946 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1947 BUS_DMASYNC_PREWRITE);
1949 DPRINTFN(10, ("sending data frame len=%u idx=%u rate=%u\n",
1950 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate));
1954 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1955 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT);
1961 rt2560_start(struct ifnet *ifp)
1963 struct rt2560_softc *sc = ifp->if_softc;
1964 struct ieee80211com *ic = &sc->sc_ic;
1966 struct ether_header *eh;
1967 struct ieee80211_node *ni;
1971 /* prevent management frames from being sent if we're not ready */
1972 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1978 IF_POLL(&ic->ic_mgtq, m0);
1980 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) {
1981 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1984 IF_DEQUEUE(&ic->ic_mgtq, m0);
1986 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif;
1987 m0->m_pkthdr.rcvif = NULL;
1989 if (bpf_peers_present(ic->ic_rawbpf))
1990 bpf_mtap(ic->ic_rawbpf, m0);
1992 if (rt2560_tx_mgt(sc, m0, ni) != 0) {
1993 ieee80211_free_node(ni);
1997 if (ic->ic_state != IEEE80211_S_RUN)
1999 IFQ_DRV_DEQUEUE(&ifp->if_snd, m0);
2002 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) {
2003 IFQ_DRV_PREPEND(&ifp->if_snd, m0);
2004 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2008 if (m0->m_len < sizeof (struct ether_header) &&
2009 !(m0 = m_pullup(m0, sizeof (struct ether_header))))
2012 eh = mtod(m0, struct ether_header *);
2013 ni = ieee80211_find_txnode(ic, eh->ether_dhost);
2018 if ((ni->ni_flags & IEEE80211_NODE_PWR_MGT) &&
2019 (m0->m_flags & M_PWR_SAV) == 0) {
2021 * Station in power save mode; pass the frame
2022 * to the 802.11 layer and continue. We'll get
2023 * the frame back when the time is right.
2025 ieee80211_pwrsave(ni, m0);
2027 * If we're in power save mode 'cuz of a bg
2028 * scan cancel it so the traffic can flow.
2029 * The packet we just queued will automatically
2030 * get sent when we drop out of power save.
2033 if (ic->ic_flags & IEEE80211_F_SCAN)
2034 ieee80211_cancel_scan(ic);
2035 ieee80211_free_node(ni);
2042 m0 = ieee80211_encap(ic, m0, ni);
2044 ieee80211_free_node(ni);
2048 if (bpf_peers_present(ic->ic_rawbpf))
2049 bpf_mtap(ic->ic_rawbpf, m0);
2051 if (rt2560_tx_data(sc, m0, ni) != 0) {
2052 ieee80211_free_node(ni);
2058 sc->sc_tx_timer = 5;
2059 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2066 rt2560_watchdog(void *arg)
2068 struct rt2560_softc *sc = arg;
2070 if (sc->sc_tx_timer > 0) {
2071 if (--sc->sc_tx_timer == 0) {
2072 device_printf(sc->sc_dev, "device timeout\n");
2074 sc->sc_ifp->if_oerrors++;
2077 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2082 * This function allows for fast channel switching in monitor mode (used by
2083 * net-mgmt/kismet). In IBSS mode, we must explicitly reset the interface to
2084 * generate a new beacon frame.
2087 rt2560_reset(struct ifnet *ifp)
2089 struct rt2560_softc *sc = ifp->if_softc;
2090 struct ieee80211com *ic = &sc->sc_ic;
2092 if (ic->ic_opmode != IEEE80211_M_MONITOR)
2095 rt2560_set_chan(sc, ic->ic_curchan);
2101 rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
2103 struct rt2560_softc *sc = ifp->if_softc;
2104 struct ieee80211com *ic = &sc->sc_ic;
2111 if (ifp->if_flags & IFF_UP) {
2113 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2114 rt2560_update_promisc(sc);
2119 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2126 error = ieee80211_ioctl(ic, cmd, data);
2129 if (error == ENETRESET) {
2130 if ((ifp->if_flags & IFF_UP) &&
2131 (ifp->if_drv_flags & IFF_DRV_RUNNING) &&
2132 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL))
2142 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val)
2147 for (ntries = 0; ntries < 100; ntries++) {
2148 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY))
2152 if (ntries == 100) {
2153 device_printf(sc->sc_dev, "could not write to BBP\n");
2157 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val;
2158 RAL_WRITE(sc, RT2560_BBPCSR, tmp);
2160 DPRINTFN(15, ("BBP R%u <- 0x%02x\n", reg, val));
2164 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg)
2169 val = RT2560_BBP_BUSY | reg << 8;
2170 RAL_WRITE(sc, RT2560_BBPCSR, val);
2172 for (ntries = 0; ntries < 100; ntries++) {
2173 val = RAL_READ(sc, RT2560_BBPCSR);
2174 if (!(val & RT2560_BBP_BUSY))
2179 device_printf(sc->sc_dev, "could not read from BBP\n");
2184 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val)
2189 for (ntries = 0; ntries < 100; ntries++) {
2190 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY))
2194 if (ntries == 100) {
2195 device_printf(sc->sc_dev, "could not write to RF\n");
2199 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 |
2201 RAL_WRITE(sc, RT2560_RFCSR, tmp);
2203 /* remember last written value in sc */
2204 sc->rf_regs[reg] = val;
2206 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff));
2210 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c)
2212 struct ieee80211com *ic = &sc->sc_ic;
2216 chan = ieee80211_chan2ieee(ic, c);
2217 if (chan == 0 || chan == IEEE80211_CHAN_ANY)
2220 if (IEEE80211_IS_CHAN_2GHZ(c))
2221 power = min(sc->txpow[chan - 1], 31);
2225 /* adjust txpower using ifconfig settings */
2226 power -= (100 - ic->ic_txpowlimit) / 8;
2228 DPRINTFN(2, ("setting channel to %u, txpower to %u\n", chan, power));
2230 switch (sc->rf_rev) {
2231 case RT2560_RF_2522:
2232 rt2560_rf_write(sc, RAL_RF1, 0x00814);
2233 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]);
2234 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2237 case RT2560_RF_2523:
2238 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2239 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]);
2240 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044);
2241 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2244 case RT2560_RF_2524:
2245 rt2560_rf_write(sc, RAL_RF1, 0x0c808);
2246 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]);
2247 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2248 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2251 case RT2560_RF_2525:
2252 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2253 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]);
2254 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2255 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2257 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2258 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]);
2259 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2260 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2263 case RT2560_RF_2525E:
2264 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2265 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]);
2266 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2267 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282);
2270 case RT2560_RF_2526:
2271 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]);
2272 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2273 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2275 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]);
2276 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2277 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2281 case RT2560_RF_5222:
2282 for (i = 0; rt2560_rf5222[i].chan != chan; i++);
2284 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1);
2285 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2);
2286 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2287 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4);
2290 printf("unknown ral rev=%d\n", sc->rf_rev);
2293 if (ic->ic_state != IEEE80211_S_SCAN) {
2294 /* set Japan filter bit for channel 14 */
2295 tmp = rt2560_bbp_read(sc, 70);
2297 tmp &= ~RT2560_JAPAN_FILTER;
2299 tmp |= RT2560_JAPAN_FILTER;
2301 rt2560_bbp_write(sc, 70, tmp);
2303 /* clear CRC errors */
2304 RAL_READ(sc, RT2560_CNT0);
2309 rt2560_set_channel(struct ieee80211com *ic)
2311 struct ifnet *ifp = ic->ic_ifp;
2312 struct rt2560_softc *sc = ifp->if_softc;
2315 rt2560_set_chan(sc, ic->ic_curchan);
2322 * Disable RF auto-tuning.
2325 rt2560_disable_rf_tune(struct rt2560_softc *sc)
2329 if (sc->rf_rev != RT2560_RF_2523) {
2330 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE;
2331 rt2560_rf_write(sc, RAL_RF1, tmp);
2334 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE;
2335 rt2560_rf_write(sc, RAL_RF3, tmp);
2337 DPRINTFN(2, ("disabling RF autotune\n"));
2342 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF
2346 rt2560_enable_tsf_sync(struct rt2560_softc *sc)
2348 struct ieee80211com *ic = &sc->sc_ic;
2349 uint16_t logcwmin, preload;
2352 /* first, disable TSF synchronization */
2353 RAL_WRITE(sc, RT2560_CSR14, 0);
2355 tmp = 16 * ic->ic_bss->ni_intval;
2356 RAL_WRITE(sc, RT2560_CSR12, tmp);
2358 RAL_WRITE(sc, RT2560_CSR13, 0);
2361 preload = (ic->ic_opmode == IEEE80211_M_STA) ? 384 : 1024;
2362 tmp = logcwmin << 16 | preload;
2363 RAL_WRITE(sc, RT2560_BCNOCSR, tmp);
2365 /* finally, enable TSF synchronization */
2366 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN;
2367 if (ic->ic_opmode == IEEE80211_M_STA)
2368 tmp |= RT2560_ENABLE_TSF_SYNC(1);
2370 tmp |= RT2560_ENABLE_TSF_SYNC(2) |
2371 RT2560_ENABLE_BEACON_GENERATOR;
2372 RAL_WRITE(sc, RT2560_CSR14, tmp);
2374 DPRINTF(("enabling TSF synchronization\n"));
2378 rt2560_update_plcp(struct rt2560_softc *sc)
2380 struct ieee80211com *ic = &sc->sc_ic;
2382 /* no short preamble for 1Mbps */
2383 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400);
2385 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) {
2386 /* values taken from the reference driver */
2387 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401);
2388 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402);
2389 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403);
2391 /* same values as above or'ed 0x8 */
2392 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409);
2393 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a);
2394 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b);
2397 DPRINTF(("updating PLCP for %s preamble\n",
2398 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"));
2402 * This function can be called by ieee80211_set_shortslottime(). Refer to
2403 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed.
2406 rt2560_update_slot(struct ifnet *ifp)
2408 struct rt2560_softc *sc = ifp->if_softc;
2409 struct ieee80211com *ic = &sc->sc_ic;
2411 uint16_t tx_sifs, tx_pifs, tx_difs, eifs;
2414 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
2416 /* update the MAC slot boundaries */
2417 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND;
2418 tx_pifs = tx_sifs + slottime;
2419 tx_difs = tx_sifs + 2 * slottime;
2420 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60;
2422 tmp = RAL_READ(sc, RT2560_CSR11);
2423 tmp = (tmp & ~0x1f00) | slottime << 8;
2424 RAL_WRITE(sc, RT2560_CSR11, tmp);
2426 tmp = tx_pifs << 16 | tx_sifs;
2427 RAL_WRITE(sc, RT2560_CSR18, tmp);
2429 tmp = eifs << 16 | tx_difs;
2430 RAL_WRITE(sc, RT2560_CSR19, tmp);
2432 DPRINTF(("setting slottime to %uus\n", slottime));
2436 rt2560_set_basicrates(struct rt2560_softc *sc)
2438 struct ieee80211com *ic = &sc->sc_ic;
2440 /* update basic rate set */
2441 if (ic->ic_curmode == IEEE80211_MODE_11B) {
2442 /* 11b basic rates: 1, 2Mbps */
2443 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3);
2444 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) {
2445 /* 11a basic rates: 6, 12, 24Mbps */
2446 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150);
2448 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */
2449 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f);
2454 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2)
2458 /* set ON period to 70ms and OFF period to 30ms */
2459 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30;
2460 RAL_WRITE(sc, RT2560_LEDCSR, tmp);
2464 rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid)
2468 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
2469 RAL_WRITE(sc, RT2560_CSR5, tmp);
2471 tmp = bssid[4] | bssid[5] << 8;
2472 RAL_WRITE(sc, RT2560_CSR6, tmp);
2474 DPRINTF(("setting BSSID to %6D\n", bssid, ":"));
2478 rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2482 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
2483 RAL_WRITE(sc, RT2560_CSR3, tmp);
2485 tmp = addr[4] | addr[5] << 8;
2486 RAL_WRITE(sc, RT2560_CSR4, tmp);
2488 DPRINTF(("setting MAC address to %6D\n", addr, ":"));
2492 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2496 tmp = RAL_READ(sc, RT2560_CSR3);
2497 addr[0] = tmp & 0xff;
2498 addr[1] = (tmp >> 8) & 0xff;
2499 addr[2] = (tmp >> 16) & 0xff;
2500 addr[3] = (tmp >> 24);
2502 tmp = RAL_READ(sc, RT2560_CSR4);
2503 addr[4] = tmp & 0xff;
2504 addr[5] = (tmp >> 8) & 0xff;
2508 rt2560_update_promisc(struct rt2560_softc *sc)
2510 struct ifnet *ifp = sc->sc_ic.ic_ifp;
2513 tmp = RAL_READ(sc, RT2560_RXCSR0);
2515 tmp &= ~RT2560_DROP_NOT_TO_ME;
2516 if (!(ifp->if_flags & IFF_PROMISC))
2517 tmp |= RT2560_DROP_NOT_TO_ME;
2519 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2521 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
2522 "entering" : "leaving"));
2526 rt2560_get_rf(int rev)
2529 case RT2560_RF_2522: return "RT2522";
2530 case RT2560_RF_2523: return "RT2523";
2531 case RT2560_RF_2524: return "RT2524";
2532 case RT2560_RF_2525: return "RT2525";
2533 case RT2560_RF_2525E: return "RT2525e";
2534 case RT2560_RF_2526: return "RT2526";
2535 case RT2560_RF_5222: return "RT5222";
2536 default: return "unknown";
2541 rt2560_read_eeprom(struct rt2560_softc *sc)
2546 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0);
2547 sc->rf_rev = (val >> 11) & 0x7;
2548 sc->hw_radio = (val >> 10) & 0x1;
2549 sc->led_mode = (val >> 6) & 0x7;
2550 sc->rx_ant = (val >> 4) & 0x3;
2551 sc->tx_ant = (val >> 2) & 0x3;
2552 sc->nb_ant = val & 0x3;
2554 /* read default values for BBP registers */
2555 for (i = 0; i < 16; i++) {
2556 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i);
2557 sc->bbp_prom[i].reg = val >> 8;
2558 sc->bbp_prom[i].val = val & 0xff;
2561 /* read Tx power for all b/g channels */
2562 for (i = 0; i < 14 / 2; i++) {
2563 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i);
2564 sc->txpow[i * 2] = val >> 8;
2565 sc->txpow[i * 2 + 1] = val & 0xff;
2568 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE);
2569 if ((val & 0xff) == 0xff)
2570 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR;
2572 sc->rssi_corr = val & 0xff;
2573 DPRINTF(("rssi correction %d, calibrate 0x%02x\n",
2574 sc->rssi_corr, val));
2579 rt2560_scan_start(struct ieee80211com *ic)
2581 struct ifnet *ifp = ic->ic_ifp;
2582 struct rt2560_softc *sc = ifp->if_softc;
2584 /* abort TSF synchronization */
2585 RAL_WRITE(sc, RT2560_CSR14, 0);
2586 rt2560_set_bssid(sc, ifp->if_broadcastaddr);
2590 rt2560_scan_end(struct ieee80211com *ic)
2592 struct ifnet *ifp = ic->ic_ifp;
2593 struct rt2560_softc *sc = ifp->if_softc;
2595 rt2560_enable_tsf_sync(sc);
2596 /* XXX keep local copy */
2597 rt2560_set_bssid(sc, ic->ic_bss->ni_bssid);
2601 rt2560_bbp_init(struct rt2560_softc *sc)
2603 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2606 /* wait for BBP to be ready */
2607 for (ntries = 0; ntries < 100; ntries++) {
2608 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0)
2612 if (ntries == 100) {
2613 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
2617 /* initialize BBP registers to default values */
2618 for (i = 0; i < N(rt2560_def_bbp); i++) {
2619 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg,
2620 rt2560_def_bbp[i].val);
2623 /* initialize BBP registers to values stored in EEPROM */
2624 for (i = 0; i < 16; i++) {
2625 if (sc->bbp_prom[i].reg == 0xff)
2627 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
2636 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna)
2641 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK;
2643 tx |= RT2560_BBP_ANTA;
2644 else if (antenna == 2)
2645 tx |= RT2560_BBP_ANTB;
2647 tx |= RT2560_BBP_DIVERSITY;
2649 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */
2650 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 ||
2651 sc->rf_rev == RT2560_RF_5222)
2652 tx |= RT2560_BBP_FLIPIQ;
2654 rt2560_bbp_write(sc, RT2560_BBP_TX, tx);
2656 /* update values for CCK and OFDM in BBPCSR1 */
2657 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007;
2658 tmp |= (tx & 0x7) << 16 | (tx & 0x7);
2659 RAL_WRITE(sc, RT2560_BBPCSR1, tmp);
2663 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna)
2667 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK;
2669 rx |= RT2560_BBP_ANTA;
2670 else if (antenna == 2)
2671 rx |= RT2560_BBP_ANTB;
2673 rx |= RT2560_BBP_DIVERSITY;
2675 /* need to force no I/Q flip for RF 2525e and 2526 */
2676 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526)
2677 rx &= ~RT2560_BBP_FLIPIQ;
2679 rt2560_bbp_write(sc, RT2560_BBP_RX, rx);
2683 rt2560_init(void *priv)
2685 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2686 struct rt2560_softc *sc = priv;
2687 struct ieee80211com *ic = &sc->sc_ic;
2688 struct ifnet *ifp = ic->ic_ifp;
2697 /* setup tx rings */
2698 tmp = RT2560_PRIO_RING_COUNT << 24 |
2699 RT2560_ATIM_RING_COUNT << 16 |
2700 RT2560_TX_RING_COUNT << 8 |
2701 RT2560_TX_DESC_SIZE;
2703 /* rings must be initialized in this exact order */
2704 RAL_WRITE(sc, RT2560_TXCSR2, tmp);
2705 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr);
2706 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr);
2707 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr);
2708 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr);
2711 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE;
2713 RAL_WRITE(sc, RT2560_RXCSR1, tmp);
2714 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr);
2716 /* initialize MAC registers to default values */
2717 for (i = 0; i < N(rt2560_def_mac); i++)
2718 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val);
2720 IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp));
2721 rt2560_set_macaddr(sc, ic->ic_myaddr);
2723 /* set basic rate set (will be updated later) */
2724 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153);
2726 rt2560_set_txantenna(sc, sc->tx_ant);
2727 rt2560_set_rxantenna(sc, sc->rx_ant);
2728 rt2560_update_slot(ifp);
2729 rt2560_update_plcp(sc);
2730 rt2560_update_led(sc, 0, 0);
2732 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2733 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY);
2735 if (rt2560_bbp_init(sc) != 0) {
2741 /* set default BSS channel */
2742 rt2560_set_chan(sc, ic->ic_curchan);
2745 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR;
2746 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2747 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR;
2748 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2749 tmp |= RT2560_DROP_TODS;
2750 if (!(ifp->if_flags & IFF_PROMISC))
2751 tmp |= RT2560_DROP_NOT_TO_ME;
2753 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2755 /* clear old FCS and Rx FIFO errors */
2756 RAL_READ(sc, RT2560_CNT0);
2757 RAL_READ(sc, RT2560_CNT4);
2759 /* clear any pending interrupts */
2760 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff);
2762 /* enable interrupts */
2763 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
2765 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2766 ifp->if_drv_flags |= IFF_DRV_RUNNING;
2768 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2769 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
2770 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
2772 ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
2779 rt2560_stop(void *arg)
2781 struct rt2560_softc *sc = arg;
2782 struct ieee80211com *ic = &sc->sc_ic;
2783 struct ifnet *ifp = ic->ic_ifp;
2784 volatile int *flags = &sc->sc_flags;
2786 while (*flags & RAL_INPUT_RUNNING) {
2787 tsleep(sc, 0, "ralrunning", hz/10);
2791 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
2792 ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
2793 sc->sc_tx_timer = 0;
2794 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2797 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX);
2800 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX);
2802 /* reset ASIC (imply reset BBP) */
2803 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2804 RAL_WRITE(sc, RT2560_CSR1, 0);
2806 /* disable interrupts */
2807 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
2809 /* reset Tx and Rx rings */
2810 rt2560_reset_tx_ring(sc, &sc->txq);
2811 rt2560_reset_tx_ring(sc, &sc->atimq);
2812 rt2560_reset_tx_ring(sc, &sc->prioq);
2813 rt2560_reset_tx_ring(sc, &sc->bcnq);
2814 rt2560_reset_rx_ring(sc, &sc->rxq);
2820 rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2821 const struct ieee80211_bpf_params *params)
2823 struct ieee80211com *ic = ni->ni_ic;
2824 struct ifnet *ifp = ic->ic_ifp;
2825 struct rt2560_softc *sc = ifp->if_softc;
2829 /* prevent management frames from being sent if we're not ready */
2830 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2833 ieee80211_free_node(ni);
2836 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) {
2837 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2840 ieee80211_free_node(ni);
2841 return ENOBUFS; /* XXX */
2844 if (bpf_peers_present(ic->ic_rawbpf))
2845 bpf_mtap(ic->ic_rawbpf, m);
2849 if (params == NULL) {
2851 * Legacy path; interpret frame contents to decide
2852 * precisely how to send the frame.
2854 if (rt2560_tx_mgt(sc, m, ni) != 0)
2858 * Caller supplied explicit parameters to use in
2859 * sending the frame.
2861 if (rt2560_tx_raw(sc, m, ni, params))
2864 sc->sc_tx_timer = 5;
2865 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2872 ieee80211_free_node(ni);
2874 return EIO; /* XXX */