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>
57 #include <netinet/in.h>
58 #include <netinet/in_systm.h>
59 #include <netinet/in_var.h>
60 #include <netinet/ip.h>
61 #include <netinet/if_ether.h>
63 #include <dev/ral/if_ralrate.h>
64 #include <dev/ral/rt2560reg.h>
65 #include <dev/ral/rt2560var.h>
68 #define DPRINTF(x) do { if (ral_debug > 0) printf x; } while (0)
69 #define DPRINTFN(n, x) do { if (ral_debug >= (n)) printf x; } while (0)
73 #define DPRINTFN(n, x)
76 static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int,
78 static int rt2560_alloc_tx_ring(struct rt2560_softc *,
79 struct rt2560_tx_ring *, int);
80 static void rt2560_reset_tx_ring(struct rt2560_softc *,
81 struct rt2560_tx_ring *);
82 static void rt2560_free_tx_ring(struct rt2560_softc *,
83 struct rt2560_tx_ring *);
84 static int rt2560_alloc_rx_ring(struct rt2560_softc *,
85 struct rt2560_rx_ring *, int);
86 static void rt2560_reset_rx_ring(struct rt2560_softc *,
87 struct rt2560_rx_ring *);
88 static void rt2560_free_rx_ring(struct rt2560_softc *,
89 struct rt2560_rx_ring *);
90 static struct ieee80211_node *rt2560_node_alloc(
91 struct ieee80211_node_table *);
92 static int rt2560_media_change(struct ifnet *);
93 static void rt2560_next_scan(void *);
94 static void rt2560_iter_func(void *, struct ieee80211_node *);
95 static void rt2560_update_rssadapt(void *);
96 static int rt2560_newstate(struct ieee80211com *,
97 enum ieee80211_state, int);
98 static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t);
99 static void rt2560_encryption_intr(struct rt2560_softc *);
100 static void rt2560_tx_intr(struct rt2560_softc *);
101 static void rt2560_prio_intr(struct rt2560_softc *);
102 static void rt2560_decryption_intr(struct rt2560_softc *);
103 static void rt2560_rx_intr(struct rt2560_softc *);
104 static void rt2560_beacon_expire(struct rt2560_softc *);
105 static void rt2560_wakeup_expire(struct rt2560_softc *);
106 static uint8_t rt2560_rxrate(struct rt2560_rx_desc *);
107 static int rt2560_ack_rate(struct ieee80211com *, int);
108 static uint16_t rt2560_txtime(int, int, uint32_t);
109 static uint8_t rt2560_plcp_signal(int);
110 static void rt2560_setup_tx_desc(struct rt2560_softc *,
111 struct rt2560_tx_desc *, uint32_t, int, int, int,
113 static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *,
114 struct ieee80211_node *);
115 static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *,
116 struct ieee80211_node *);
117 static struct mbuf *rt2560_get_rts(struct rt2560_softc *,
118 struct ieee80211_frame *, uint16_t);
119 static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *,
120 struct ieee80211_node *);
121 static void rt2560_start(struct ifnet *);
122 static void rt2560_watchdog(void *);
123 static int rt2560_reset(struct ifnet *);
124 static int rt2560_ioctl(struct ifnet *, u_long, caddr_t);
125 static void rt2560_bbp_write(struct rt2560_softc *, uint8_t,
127 static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t);
128 static void rt2560_rf_write(struct rt2560_softc *, uint8_t,
130 static void rt2560_set_chan(struct rt2560_softc *,
131 struct ieee80211_channel *);
133 static void rt2560_disable_rf_tune(struct rt2560_softc *);
135 static void rt2560_enable_tsf_sync(struct rt2560_softc *);
136 static void rt2560_update_plcp(struct rt2560_softc *);
137 static void rt2560_update_slot(struct ifnet *);
138 static void rt2560_set_basicrates(struct rt2560_softc *);
139 static void rt2560_update_led(struct rt2560_softc *, int, int);
140 static void rt2560_set_bssid(struct rt2560_softc *, uint8_t *);
141 static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *);
142 static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *);
143 static void rt2560_update_promisc(struct rt2560_softc *);
144 static const char *rt2560_get_rf(int);
145 static void rt2560_read_eeprom(struct rt2560_softc *);
146 static int rt2560_bbp_init(struct rt2560_softc *);
147 static void rt2560_set_txantenna(struct rt2560_softc *, int);
148 static void rt2560_set_rxantenna(struct rt2560_softc *, int);
149 static void rt2560_init(void *);
150 static void rt2560_stop(void *);
151 static int rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *,
152 const struct ieee80211_bpf_params *);
155 * Supported rates for 802.11a/b/g modes (in 500Kbps unit).
157 static const struct ieee80211_rateset rt2560_rateset_11a =
158 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } };
160 static const struct ieee80211_rateset rt2560_rateset_11b =
161 { 4, { 2, 4, 11, 22 } };
163 static const struct ieee80211_rateset rt2560_rateset_11g =
164 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } };
166 static const struct {
169 } rt2560_def_mac[] = {
173 static const struct {
176 } rt2560_def_bbp[] = {
180 static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2;
181 static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2;
182 static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2;
183 static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2;
184 static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2;
185 static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2;
186 static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2;
187 static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2;
189 static const struct {
192 } rt2560_rf5222[] = {
197 rt2560_attach(device_t dev, int id)
199 struct rt2560_softc *sc = device_get_softc(dev);
200 struct ieee80211com *ic = &sc->sc_ic;
206 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
207 MTX_DEF | MTX_RECURSE);
209 callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0);
210 callout_init(&sc->scan_ch, debug_mpsafenet ? CALLOUT_MPSAFE : 0);
211 callout_init(&sc->rssadapt_ch, CALLOUT_MPSAFE);
213 /* retrieve RT2560 rev. no */
214 sc->asic_rev = RAL_READ(sc, RT2560_CSR0);
216 /* retrieve MAC address */
217 rt2560_get_macaddr(sc, ic->ic_myaddr);
219 /* retrieve RF rev. no and various other things from EEPROM */
220 rt2560_read_eeprom(sc);
222 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n",
223 sc->asic_rev, rt2560_get_rf(sc->rf_rev));
226 * Allocate Tx and Rx rings.
228 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT);
230 device_printf(sc->sc_dev, "could not allocate Tx ring\n");
234 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT);
236 device_printf(sc->sc_dev, "could not allocate ATIM ring\n");
240 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT);
242 device_printf(sc->sc_dev, "could not allocate Prio ring\n");
246 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT);
248 device_printf(sc->sc_dev, "could not allocate Beacon ring\n");
252 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT);
254 device_printf(sc->sc_dev, "could not allocate Rx ring\n");
258 ifp = sc->sc_ifp = if_alloc(IFT_ETHER);
260 device_printf(sc->sc_dev, "can not if_alloc()\n");
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, IFQ_MAXLEN);
271 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
272 IFQ_SET_READY(&ifp->if_snd);
275 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
276 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */
277 ic->ic_state = IEEE80211_S_INIT;
279 /* set device capabilities */
281 IEEE80211_C_IBSS | /* IBSS mode supported */
282 IEEE80211_C_MONITOR | /* monitor mode supported */
283 IEEE80211_C_HOSTAP | /* HostAp mode supported */
284 IEEE80211_C_TXPMGT | /* tx power management */
285 IEEE80211_C_SHPREAMBLE | /* short preamble supported */
286 IEEE80211_C_SHSLOT | /* short slot time supported */
287 IEEE80211_C_WPA; /* 802.11i */
289 if (sc->rf_rev == RT2560_RF_5222) {
290 /* set supported .11a rates */
291 ic->ic_sup_rates[IEEE80211_MODE_11A] = rt2560_rateset_11a;
293 /* set supported .11a channels */
294 for (i = 36; i <= 64; i += 4) {
295 ic->ic_channels[i].ic_freq =
296 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
297 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
299 for (i = 100; i <= 140; i += 4) {
300 ic->ic_channels[i].ic_freq =
301 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
302 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
304 for (i = 149; i <= 161; i += 4) {
305 ic->ic_channels[i].ic_freq =
306 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
307 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
311 /* set supported .11b and .11g rates */
312 ic->ic_sup_rates[IEEE80211_MODE_11B] = rt2560_rateset_11b;
313 ic->ic_sup_rates[IEEE80211_MODE_11G] = rt2560_rateset_11g;
315 /* set supported .11b and .11g channels (1 through 14) */
316 for (i = 1; i <= 14; i++) {
317 ic->ic_channels[i].ic_freq =
318 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
319 ic->ic_channels[i].ic_flags =
320 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM |
321 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ;
324 ieee80211_ifattach(ic);
325 ic->ic_node_alloc = rt2560_node_alloc;
326 ic->ic_updateslot = rt2560_update_slot;
327 ic->ic_reset = rt2560_reset;
328 /* enable s/w bmiss handling in sta mode */
329 ic->ic_flags_ext |= IEEE80211_FEXT_SWBMISS;
331 /* override state transition machine */
332 sc->sc_newstate = ic->ic_newstate;
333 ic->ic_newstate = rt2560_newstate;
334 ic->ic_raw_xmit = rt2560_raw_xmit;
335 ieee80211_media_init(ic, rt2560_media_change, ieee80211_media_status);
337 bpfattach2(ifp, DLT_IEEE802_11_RADIO,
338 sizeof (struct ieee80211_frame) + 64, &sc->sc_drvbpf);
340 sc->sc_rxtap_len = sizeof sc->sc_rxtapu;
341 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
342 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2560_RX_RADIOTAP_PRESENT);
344 sc->sc_txtap_len = sizeof sc->sc_txtapu;
345 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
346 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2560_TX_RADIOTAP_PRESENT);
349 * Add a few sysctl knobs.
353 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
354 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
355 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)");
357 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
358 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
359 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)");
361 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
362 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "dwell",
363 CTLFLAG_RW, &sc->dwelltime, 0,
364 "channel dwell time (ms) for AP/station scanning");
367 ieee80211_announce(ic);
371 fail6: rt2560_free_rx_ring(sc, &sc->rxq);
372 fail5: rt2560_free_tx_ring(sc, &sc->bcnq);
373 fail4: rt2560_free_tx_ring(sc, &sc->prioq);
374 fail3: rt2560_free_tx_ring(sc, &sc->atimq);
375 fail2: rt2560_free_tx_ring(sc, &sc->txq);
376 fail1: mtx_destroy(&sc->sc_mtx);
382 rt2560_detach(void *xsc)
384 struct rt2560_softc *sc = xsc;
385 struct ieee80211com *ic = &sc->sc_ic;
386 struct ifnet *ifp = ic->ic_ifp;
389 callout_stop(&sc->watchdog_ch);
390 callout_stop(&sc->scan_ch);
391 callout_stop(&sc->rssadapt_ch);
394 ieee80211_ifdetach(ic);
396 rt2560_free_tx_ring(sc, &sc->txq);
397 rt2560_free_tx_ring(sc, &sc->atimq);
398 rt2560_free_tx_ring(sc, &sc->prioq);
399 rt2560_free_tx_ring(sc, &sc->bcnq);
400 rt2560_free_rx_ring(sc, &sc->rxq);
404 mtx_destroy(&sc->sc_mtx);
410 rt2560_shutdown(void *xsc)
412 struct rt2560_softc *sc = xsc;
418 rt2560_suspend(void *xsc)
420 struct rt2560_softc *sc = xsc;
426 rt2560_resume(void *xsc)
428 struct rt2560_softc *sc = xsc;
429 struct ifnet *ifp = sc->sc_ic.ic_ifp;
431 if (ifp->if_flags & IFF_UP) {
432 ifp->if_init(ifp->if_softc);
433 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
439 rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
444 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
446 *(bus_addr_t *)arg = segs[0].ds_addr;
450 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring,
457 ring->cur = ring->next = 0;
458 ring->cur_encrypt = ring->next_encrypt = 0;
460 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
461 BUS_SPACE_MAXADDR, NULL, NULL, count * RT2560_TX_DESC_SIZE, 1,
462 count * RT2560_TX_DESC_SIZE, 0, NULL, NULL, &ring->desc_dmat);
464 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
468 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
469 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
471 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
475 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
476 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
479 device_printf(sc->sc_dev, "could not load desc DMA map\n");
483 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF,
485 if (ring->data == NULL) {
486 device_printf(sc->sc_dev, "could not allocate soft data\n");
491 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
492 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, RT2560_MAX_SCATTER,
493 MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
495 device_printf(sc->sc_dev, "could not create data DMA tag\n");
499 for (i = 0; i < count; i++) {
500 error = bus_dmamap_create(ring->data_dmat, 0,
503 device_printf(sc->sc_dev, "could not create DMA map\n");
510 fail: rt2560_free_tx_ring(sc, ring);
515 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
517 struct rt2560_tx_desc *desc;
518 struct rt2560_tx_data *data;
521 for (i = 0; i < ring->count; i++) {
522 desc = &ring->desc[i];
523 data = &ring->data[i];
525 if (data->m != NULL) {
526 bus_dmamap_sync(ring->data_dmat, data->map,
527 BUS_DMASYNC_POSTWRITE);
528 bus_dmamap_unload(ring->data_dmat, data->map);
533 if (data->ni != NULL) {
534 ieee80211_free_node(data->ni);
541 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
544 ring->cur = ring->next = 0;
545 ring->cur_encrypt = ring->next_encrypt = 0;
549 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
551 struct rt2560_tx_data *data;
554 if (ring->desc != NULL) {
555 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
556 BUS_DMASYNC_POSTWRITE);
557 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
558 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
561 if (ring->desc_dmat != NULL)
562 bus_dma_tag_destroy(ring->desc_dmat);
564 if (ring->data != NULL) {
565 for (i = 0; i < ring->count; i++) {
566 data = &ring->data[i];
568 if (data->m != NULL) {
569 bus_dmamap_sync(ring->data_dmat, data->map,
570 BUS_DMASYNC_POSTWRITE);
571 bus_dmamap_unload(ring->data_dmat, data->map);
575 if (data->ni != NULL)
576 ieee80211_free_node(data->ni);
578 if (data->map != NULL)
579 bus_dmamap_destroy(ring->data_dmat, data->map);
582 free(ring->data, M_DEVBUF);
585 if (ring->data_dmat != NULL)
586 bus_dma_tag_destroy(ring->data_dmat);
590 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring,
593 struct rt2560_rx_desc *desc;
594 struct rt2560_rx_data *data;
599 ring->cur = ring->next = 0;
600 ring->cur_decrypt = 0;
602 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
603 BUS_SPACE_MAXADDR, NULL, NULL, count * RT2560_RX_DESC_SIZE, 1,
604 count * RT2560_RX_DESC_SIZE, 0, NULL, NULL, &ring->desc_dmat);
606 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
610 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
611 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
613 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
617 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
618 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
621 device_printf(sc->sc_dev, "could not load desc DMA map\n");
625 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF,
627 if (ring->data == NULL) {
628 device_printf(sc->sc_dev, "could not allocate soft data\n");
634 * Pre-allocate Rx buffers and populate Rx ring.
636 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
637 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
638 NULL, &ring->data_dmat);
640 device_printf(sc->sc_dev, "could not create data DMA tag\n");
644 for (i = 0; i < count; i++) {
645 desc = &sc->rxq.desc[i];
646 data = &sc->rxq.data[i];
648 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
650 device_printf(sc->sc_dev, "could not create DMA map\n");
654 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
655 if (data->m == NULL) {
656 device_printf(sc->sc_dev,
657 "could not allocate rx mbuf\n");
662 error = bus_dmamap_load(ring->data_dmat, data->map,
663 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr,
666 device_printf(sc->sc_dev,
667 "could not load rx buf DMA map");
671 desc->flags = htole32(RT2560_RX_BUSY);
672 desc->physaddr = htole32(physaddr);
675 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
679 fail: rt2560_free_rx_ring(sc, ring);
684 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
688 for (i = 0; i < ring->count; i++) {
689 ring->desc[i].flags = htole32(RT2560_RX_BUSY);
690 ring->data[i].drop = 0;
693 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
695 ring->cur = ring->next = 0;
696 ring->cur_decrypt = 0;
700 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
702 struct rt2560_rx_data *data;
705 if (ring->desc != NULL) {
706 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
707 BUS_DMASYNC_POSTWRITE);
708 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
709 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
712 if (ring->desc_dmat != NULL)
713 bus_dma_tag_destroy(ring->desc_dmat);
715 if (ring->data != NULL) {
716 for (i = 0; i < ring->count; i++) {
717 data = &ring->data[i];
719 if (data->m != NULL) {
720 bus_dmamap_sync(ring->data_dmat, data->map,
721 BUS_DMASYNC_POSTREAD);
722 bus_dmamap_unload(ring->data_dmat, data->map);
726 if (data->map != NULL)
727 bus_dmamap_destroy(ring->data_dmat, data->map);
730 free(ring->data, M_DEVBUF);
733 if (ring->data_dmat != NULL)
734 bus_dma_tag_destroy(ring->data_dmat);
737 static struct ieee80211_node *
738 rt2560_node_alloc(struct ieee80211_node_table *nt)
740 struct rt2560_node *rn;
742 rn = malloc(sizeof (struct rt2560_node), M_80211_NODE,
745 return (rn != NULL) ? &rn->ni : NULL;
749 rt2560_media_change(struct ifnet *ifp)
751 struct rt2560_softc *sc = ifp->if_softc;
754 error = ieee80211_media_change(ifp);
755 if (error != ENETRESET)
758 if ((ifp->if_flags & IFF_UP) &&
759 (ifp->if_drv_flags & IFF_DRV_RUNNING))
766 * This function is called periodically (every 200ms) during scanning to
767 * switch from one channel to another.
770 rt2560_next_scan(void *arg)
772 struct rt2560_softc *sc = arg;
773 struct ieee80211com *ic = &sc->sc_ic;
775 if (ic->ic_state == IEEE80211_S_SCAN)
776 ieee80211_next_scan(ic);
780 * This function is called for each node present in the node station table.
783 rt2560_iter_func(void *arg, struct ieee80211_node *ni)
785 struct rt2560_node *rn = (struct rt2560_node *)ni;
787 ral_rssadapt_updatestats(&rn->rssadapt);
791 * This function is called periodically (every 100ms) in RUN state to update
792 * the rate adaptation statistics.
795 rt2560_update_rssadapt(void *arg)
797 struct rt2560_softc *sc = arg;
798 struct ieee80211com *ic = &sc->sc_ic;
802 ieee80211_iterate_nodes(&ic->ic_sta, rt2560_iter_func, arg);
803 callout_reset(&sc->rssadapt_ch, hz / 10, rt2560_update_rssadapt, sc);
809 rt2560_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
811 struct rt2560_softc *sc = ic->ic_ifp->if_softc;
812 enum ieee80211_state ostate;
813 struct ieee80211_node *ni;
817 ostate = ic->ic_state;
818 callout_stop(&sc->scan_ch);
821 case IEEE80211_S_INIT:
822 callout_stop(&sc->rssadapt_ch);
824 if (ostate == IEEE80211_S_RUN) {
825 /* abort TSF synchronization */
826 RAL_WRITE(sc, RT2560_CSR14, 0);
828 /* turn association led off */
829 rt2560_update_led(sc, 0, 0);
833 case IEEE80211_S_SCAN:
834 rt2560_set_chan(sc, ic->ic_curchan);
835 callout_reset(&sc->scan_ch, (sc->dwelltime * hz) / 1000,
836 rt2560_next_scan, sc);
839 case IEEE80211_S_AUTH:
840 rt2560_set_chan(sc, ic->ic_curchan);
843 case IEEE80211_S_ASSOC:
844 rt2560_set_chan(sc, ic->ic_curchan);
847 case IEEE80211_S_RUN:
848 rt2560_set_chan(sc, ic->ic_curchan);
852 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
853 rt2560_update_plcp(sc);
854 rt2560_set_basicrates(sc);
855 rt2560_set_bssid(sc, ni->ni_bssid);
858 if (ic->ic_opmode == IEEE80211_M_HOSTAP ||
859 ic->ic_opmode == IEEE80211_M_IBSS) {
860 m = ieee80211_beacon_alloc(ic, ni, &sc->sc_bo);
862 device_printf(sc->sc_dev,
863 "could not allocate beacon\n");
868 ieee80211_ref_node(ni);
869 error = rt2560_tx_bcn(sc, m, ni);
874 /* turn assocation led on */
875 rt2560_update_led(sc, 1, 0);
877 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
878 callout_reset(&sc->rssadapt_ch, hz / 10,
879 rt2560_update_rssadapt, sc);
881 rt2560_enable_tsf_sync(sc);
886 return (error != 0) ? error : sc->sc_newstate(ic, nstate, arg);
890 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or
894 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr)
900 /* clock C once before the first command */
901 RT2560_EEPROM_CTL(sc, 0);
903 RT2560_EEPROM_CTL(sc, RT2560_S);
904 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
905 RT2560_EEPROM_CTL(sc, RT2560_S);
907 /* write start bit (1) */
908 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
909 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
911 /* write READ opcode (10) */
912 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
913 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
914 RT2560_EEPROM_CTL(sc, RT2560_S);
915 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
917 /* write address (A5-A0 or A7-A0) */
918 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7;
919 for (; n >= 0; n--) {
920 RT2560_EEPROM_CTL(sc, RT2560_S |
921 (((addr >> n) & 1) << RT2560_SHIFT_D));
922 RT2560_EEPROM_CTL(sc, RT2560_S |
923 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C);
926 RT2560_EEPROM_CTL(sc, RT2560_S);
928 /* read data Q15-Q0 */
930 for (n = 15; n >= 0; n--) {
931 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
932 tmp = RAL_READ(sc, RT2560_CSR21);
933 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n;
934 RT2560_EEPROM_CTL(sc, RT2560_S);
937 RT2560_EEPROM_CTL(sc, 0);
939 /* clear Chip Select and clock C */
940 RT2560_EEPROM_CTL(sc, RT2560_S);
941 RT2560_EEPROM_CTL(sc, 0);
942 RT2560_EEPROM_CTL(sc, RT2560_C);
948 * Some frames were processed by the hardware cipher engine and are ready for
952 rt2560_encryption_intr(struct rt2560_softc *sc)
954 struct rt2560_tx_desc *desc;
957 /* retrieve last descriptor index processed by cipher engine */
958 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr;
959 hw /= RT2560_TX_DESC_SIZE;
961 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
962 BUS_DMASYNC_POSTREAD);
964 for (; sc->txq.next_encrypt != hw;) {
965 desc = &sc->txq.desc[sc->txq.next_encrypt];
967 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
968 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY))
971 /* for TKIP, swap eiv field to fix a bug in ASIC */
972 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) ==
973 RT2560_TX_CIPHER_TKIP)
974 desc->eiv = bswap32(desc->eiv);
976 /* mark the frame ready for transmission */
977 desc->flags |= htole32(RT2560_TX_BUSY | RT2560_TX_VALID);
979 DPRINTFN(15, ("encryption done idx=%u\n",
980 sc->txq.next_encrypt));
982 sc->txq.next_encrypt =
983 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT;
986 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
987 BUS_DMASYNC_PREWRITE);
990 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX);
994 rt2560_tx_intr(struct rt2560_softc *sc)
996 struct ieee80211com *ic = &sc->sc_ic;
997 struct ifnet *ifp = ic->ic_ifp;
998 struct rt2560_tx_desc *desc;
999 struct rt2560_tx_data *data;
1000 struct rt2560_node *rn;
1002 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1003 BUS_DMASYNC_POSTREAD);
1006 desc = &sc->txq.desc[sc->txq.next];
1007 data = &sc->txq.data[sc->txq.next];
1009 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
1010 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY) ||
1011 !(le32toh(desc->flags) & RT2560_TX_VALID))
1014 rn = (struct rt2560_node *)data->ni;
1016 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) {
1017 case RT2560_TX_SUCCESS:
1018 DPRINTFN(10, ("data frame sent successfully\n"));
1019 if (data->id.id_node != NULL) {
1020 ral_rssadapt_raise_rate(ic, &rn->rssadapt,
1026 case RT2560_TX_SUCCESS_RETRY:
1027 DPRINTFN(9, ("data frame sent after %u retries\n",
1028 (le32toh(desc->flags) >> 5) & 0x7));
1032 case RT2560_TX_FAIL_RETRY:
1033 DPRINTFN(9, ("sending data frame failed (too much "
1035 if (data->id.id_node != NULL) {
1036 ral_rssadapt_lower_rate(ic, data->ni,
1037 &rn->rssadapt, &data->id);
1042 case RT2560_TX_FAIL_INVALID:
1043 case RT2560_TX_FAIL_OTHER:
1045 device_printf(sc->sc_dev, "sending data frame failed "
1046 "0x%08x\n", le32toh(desc->flags));
1050 bus_dmamap_sync(sc->txq.data_dmat, data->map,
1051 BUS_DMASYNC_POSTWRITE);
1052 bus_dmamap_unload(sc->txq.data_dmat, data->map);
1055 ieee80211_free_node(data->ni);
1058 /* descriptor is no longer valid */
1059 desc->flags &= ~htole32(RT2560_TX_VALID);
1061 DPRINTFN(15, ("tx done idx=%u\n", sc->txq.next));
1064 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT;
1067 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1068 BUS_DMASYNC_PREWRITE);
1070 sc->sc_tx_timer = 0;
1071 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1076 rt2560_prio_intr(struct rt2560_softc *sc)
1078 struct ieee80211com *ic = &sc->sc_ic;
1079 struct ifnet *ifp = ic->ic_ifp;
1080 struct rt2560_tx_desc *desc;
1081 struct rt2560_tx_data *data;
1083 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1084 BUS_DMASYNC_POSTREAD);
1087 desc = &sc->prioq.desc[sc->prioq.next];
1088 data = &sc->prioq.data[sc->prioq.next];
1090 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
1091 !(le32toh(desc->flags) & RT2560_TX_VALID))
1094 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) {
1095 case RT2560_TX_SUCCESS:
1096 DPRINTFN(10, ("mgt frame sent successfully\n"));
1099 case RT2560_TX_SUCCESS_RETRY:
1100 DPRINTFN(9, ("mgt frame sent after %u retries\n",
1101 (le32toh(desc->flags) >> 5) & 0x7));
1104 case RT2560_TX_FAIL_RETRY:
1105 DPRINTFN(9, ("sending mgt frame failed (too much "
1109 case RT2560_TX_FAIL_INVALID:
1110 case RT2560_TX_FAIL_OTHER:
1112 device_printf(sc->sc_dev, "sending mgt frame failed "
1113 "0x%08x\n", le32toh(desc->flags));
1116 bus_dmamap_sync(sc->prioq.data_dmat, data->map,
1117 BUS_DMASYNC_POSTWRITE);
1118 bus_dmamap_unload(sc->prioq.data_dmat, data->map);
1121 ieee80211_free_node(data->ni);
1124 /* descriptor is no longer valid */
1125 desc->flags &= ~htole32(RT2560_TX_VALID);
1127 DPRINTFN(15, ("prio done idx=%u\n", sc->prioq.next));
1130 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT;
1133 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1134 BUS_DMASYNC_PREWRITE);
1136 sc->sc_tx_timer = 0;
1137 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1142 * Some frames were processed by the hardware cipher engine and are ready for
1143 * transmission to the IEEE802.11 layer.
1146 rt2560_decryption_intr(struct rt2560_softc *sc)
1148 struct ieee80211com *ic = &sc->sc_ic;
1149 struct ifnet *ifp = ic->ic_ifp;
1150 struct rt2560_rx_desc *desc;
1151 struct rt2560_rx_data *data;
1152 bus_addr_t physaddr;
1153 struct ieee80211_frame *wh;
1154 struct ieee80211_node *ni;
1155 struct rt2560_node *rn;
1156 struct mbuf *mnew, *m;
1159 /* retrieve last decriptor index processed by cipher engine */
1160 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr;
1161 hw /= RT2560_RX_DESC_SIZE;
1163 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1164 BUS_DMASYNC_POSTREAD);
1166 for (; sc->rxq.cur_decrypt != hw;) {
1167 desc = &sc->rxq.desc[sc->rxq.cur_decrypt];
1168 data = &sc->rxq.data[sc->rxq.cur_decrypt];
1170 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1171 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1179 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 &&
1180 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) {
1186 * Try to allocate a new mbuf for this ring element and load it
1187 * before processing the current mbuf. If the ring element
1188 * cannot be loaded, drop the received packet and reuse the old
1189 * mbuf. In the unlikely case that the old mbuf can't be
1190 * reloaded either, explicitly panic.
1192 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1198 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1199 BUS_DMASYNC_POSTREAD);
1200 bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1202 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1203 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr,
1208 /* try to reload the old mbuf */
1209 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1210 mtod(data->m, void *), MCLBYTES,
1211 rt2560_dma_map_addr, &physaddr, 0);
1213 /* very unlikely that it will fail... */
1214 panic("%s: could not load old rx mbuf",
1215 device_get_name(sc->sc_dev));
1222 * New mbuf successfully loaded, update Rx ring and continue
1227 desc->physaddr = htole32(physaddr);
1230 m->m_pkthdr.rcvif = ifp;
1231 m->m_pkthdr.len = m->m_len =
1232 (le32toh(desc->flags) >> 16) & 0xfff;
1234 if (bpf_peers_present(sc->sc_drvbpf)) {
1235 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap;
1236 uint32_t tsf_lo, tsf_hi;
1238 /* get timestamp (low and high 32 bits) */
1239 tsf_hi = RAL_READ(sc, RT2560_CSR17);
1240 tsf_lo = RAL_READ(sc, RT2560_CSR16);
1243 htole64(((uint64_t)tsf_hi << 32) | tsf_lo);
1245 tap->wr_rate = rt2560_rxrate(desc);
1246 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
1247 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
1248 tap->wr_antenna = sc->rx_ant;
1249 tap->wr_antsignal = desc->rssi;
1251 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m);
1254 wh = mtod(m, struct ieee80211_frame *);
1255 ni = ieee80211_find_rxnode(ic,
1256 (struct ieee80211_frame_min *)wh);
1258 /* send the frame to the 802.11 layer */
1259 ieee80211_input(ic, m, ni, desc->rssi, 0);
1261 /* give rssi to the rate adatation algorithm */
1262 rn = (struct rt2560_node *)ni;
1263 ral_rssadapt_input(ic, ni, &rn->rssadapt, desc->rssi);
1265 /* node is no longer needed */
1266 ieee80211_free_node(ni);
1268 skip: desc->flags = htole32(RT2560_RX_BUSY);
1270 DPRINTFN(15, ("decryption done idx=%u\n", sc->rxq.cur_decrypt));
1272 sc->rxq.cur_decrypt =
1273 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT;
1276 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1277 BUS_DMASYNC_PREWRITE);
1281 * Some frames were received. Pass them to the hardware cipher engine before
1282 * sending them to the 802.11 layer.
1285 rt2560_rx_intr(struct rt2560_softc *sc)
1287 struct rt2560_rx_desc *desc;
1288 struct rt2560_rx_data *data;
1290 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1291 BUS_DMASYNC_POSTREAD);
1294 desc = &sc->rxq.desc[sc->rxq.cur];
1295 data = &sc->rxq.data[sc->rxq.cur];
1297 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1298 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1303 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) ||
1304 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) {
1306 * This should not happen since we did not request
1307 * to receive those frames when we filled RXCSR0.
1309 DPRINTFN(5, ("PHY or CRC error flags 0x%08x\n",
1310 le32toh(desc->flags)));
1314 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) {
1315 DPRINTFN(5, ("bad length\n"));
1319 /* mark the frame for decryption */
1320 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY);
1322 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1324 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT;
1327 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1328 BUS_DMASYNC_PREWRITE);
1331 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT);
1335 * This function is called periodically in IBSS mode when a new beacon must be
1339 rt2560_beacon_expire(struct rt2560_softc *sc)
1341 struct ieee80211com *ic = &sc->sc_ic;
1342 struct rt2560_tx_data *data;
1344 if (ic->ic_opmode != IEEE80211_M_IBSS &&
1345 ic->ic_opmode != IEEE80211_M_HOSTAP)
1348 data = &sc->bcnq.data[sc->bcnq.next];
1350 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
1351 bus_dmamap_unload(sc->bcnq.data_dmat, data->map);
1353 ieee80211_beacon_update(ic, data->ni, &sc->sc_bo, data->m, 1);
1355 if (bpf_peers_present(ic->ic_rawbpf))
1356 bpf_mtap(ic->ic_rawbpf, data->m);
1358 rt2560_tx_bcn(sc, data->m, data->ni);
1360 DPRINTFN(15, ("beacon expired\n"));
1362 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT;
1367 rt2560_wakeup_expire(struct rt2560_softc *sc)
1369 DPRINTFN(2, ("wakeup expired\n"));
1373 rt2560_intr(void *arg)
1375 struct rt2560_softc *sc = arg;
1376 struct ifnet *ifp = sc->sc_ifp;
1381 /* disable interrupts */
1382 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
1384 /* don't re-enable interrupts if we're shutting down */
1385 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1390 r = RAL_READ(sc, RT2560_CSR7);
1391 RAL_WRITE(sc, RT2560_CSR7, r);
1393 if (r & RT2560_BEACON_EXPIRE)
1394 rt2560_beacon_expire(sc);
1396 if (r & RT2560_WAKEUP_EXPIRE)
1397 rt2560_wakeup_expire(sc);
1399 if (r & RT2560_ENCRYPTION_DONE)
1400 rt2560_encryption_intr(sc);
1402 if (r & RT2560_TX_DONE)
1405 if (r & RT2560_PRIO_DONE)
1406 rt2560_prio_intr(sc);
1408 if (r & RT2560_DECRYPTION_DONE)
1409 rt2560_decryption_intr(sc);
1411 if (r & RT2560_RX_DONE)
1414 /* re-enable interrupts */
1415 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
1420 /* quickly determine if a given rate is CCK or OFDM */
1421 #define RAL_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
1423 #define RAL_ACK_SIZE 14 /* 10 + 4(FCS) */
1424 #define RAL_CTS_SIZE 14 /* 10 + 4(FCS) */
1426 #define RAL_SIFS 10 /* us */
1428 #define RT2560_TXRX_TURNAROUND 10 /* us */
1431 * This function is only used by the Rx radiotap code.
1434 rt2560_rxrate(struct rt2560_rx_desc *desc)
1436 if (le32toh(desc->flags) & RT2560_RX_OFDM) {
1437 /* reverse function of rt2560_plcp_signal */
1438 switch (desc->rate) {
1439 case 0xb: return 12;
1440 case 0xf: return 18;
1441 case 0xa: return 24;
1442 case 0xe: return 36;
1443 case 0x9: return 48;
1444 case 0xd: return 72;
1445 case 0x8: return 96;
1446 case 0xc: return 108;
1449 if (desc->rate == 10)
1451 if (desc->rate == 20)
1453 if (desc->rate == 55)
1455 if (desc->rate == 110)
1458 return 2; /* should not get there */
1462 * Return the expected ack rate for a frame transmitted at rate `rate'.
1463 * XXX: this should depend on the destination node basic rate set.
1466 rt2560_ack_rate(struct ieee80211com *ic, int rate)
1475 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate;
1491 /* default to 1Mbps */
1496 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'.
1497 * The function automatically determines the operating mode depending on the
1498 * given rate. `flags' indicates whether short preamble is in use or not.
1501 rt2560_txtime(int len, int rate, uint32_t flags)
1505 if (RAL_RATE_IS_OFDM(rate)) {
1506 /* IEEE Std 802.11a-1999, pp. 37 */
1507 txtime = (8 + 4 * len + 3 + rate - 1) / rate;
1508 txtime = 16 + 4 + 4 * txtime + 6;
1510 /* IEEE Std 802.11b-1999, pp. 28 */
1511 txtime = (16 * len + rate - 1) / rate;
1512 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE))
1522 rt2560_plcp_signal(int rate)
1525 /* CCK rates (returned values are device-dependent) */
1528 case 11: return 0x2;
1529 case 22: return 0x3;
1531 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1532 case 12: return 0xb;
1533 case 18: return 0xf;
1534 case 24: return 0xa;
1535 case 36: return 0xe;
1536 case 48: return 0x9;
1537 case 72: return 0xd;
1538 case 96: return 0x8;
1539 case 108: return 0xc;
1541 /* unsupported rates (should not get there) */
1542 default: return 0xff;
1547 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc,
1548 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr)
1550 struct ieee80211com *ic = &sc->sc_ic;
1551 uint16_t plcp_length;
1554 desc->flags = htole32(flags);
1555 desc->flags |= htole32(len << 16);
1556 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) :
1557 htole32(RT2560_TX_BUSY | RT2560_TX_VALID);
1559 desc->physaddr = htole32(physaddr);
1560 desc->wme = htole16(
1562 RT2560_LOGCWMIN(3) |
1563 RT2560_LOGCWMAX(8));
1565 /* setup PLCP fields */
1566 desc->plcp_signal = rt2560_plcp_signal(rate);
1567 desc->plcp_service = 4;
1569 len += IEEE80211_CRC_LEN;
1570 if (RAL_RATE_IS_OFDM(rate)) {
1571 desc->flags |= htole32(RT2560_TX_OFDM);
1573 plcp_length = len & 0xfff;
1574 desc->plcp_length_hi = plcp_length >> 6;
1575 desc->plcp_length_lo = plcp_length & 0x3f;
1577 plcp_length = (16 * len + rate - 1) / rate;
1579 remainder = (16 * len) % 22;
1580 if (remainder != 0 && remainder < 7)
1581 desc->plcp_service |= RT2560_PLCP_LENGEXT;
1583 desc->plcp_length_hi = plcp_length >> 8;
1584 desc->plcp_length_lo = plcp_length & 0xff;
1586 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1587 desc->plcp_signal |= 0x08;
1592 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0,
1593 struct ieee80211_node *ni)
1595 struct ieee80211com *ic = &sc->sc_ic;
1596 struct rt2560_tx_desc *desc;
1597 struct rt2560_tx_data *data;
1598 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1599 int nsegs, rate, error;
1601 desc = &sc->bcnq.desc[sc->bcnq.cur];
1602 data = &sc->bcnq.data[sc->bcnq.cur];
1604 rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2;
1606 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0,
1607 segs, &nsegs, BUS_DMA_NOWAIT);
1609 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1615 if (bpf_peers_present(sc->sc_drvbpf)) {
1616 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1619 tap->wt_rate = rate;
1620 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1621 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1622 tap->wt_antenna = sc->tx_ant;
1624 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1630 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF |
1631 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr);
1633 DPRINTFN(10, ("sending beacon frame len=%u idx=%u rate=%u\n",
1634 m0->m_pkthdr.len, sc->bcnq.cur, rate));
1636 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1637 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map,
1638 BUS_DMASYNC_PREWRITE);
1640 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT;
1646 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0,
1647 struct ieee80211_node *ni)
1649 struct ieee80211com *ic = &sc->sc_ic;
1650 struct rt2560_tx_desc *desc;
1651 struct rt2560_tx_data *data;
1652 struct ieee80211_frame *wh;
1653 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1656 int nsegs, rate, error;
1658 desc = &sc->prioq.desc[sc->prioq.cur];
1659 data = &sc->prioq.data[sc->prioq.cur];
1661 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1663 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
1666 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1672 if (bpf_peers_present(sc->sc_drvbpf)) {
1673 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1676 tap->wt_rate = rate;
1677 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1678 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1679 tap->wt_antenna = sc->tx_ant;
1681 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1687 wh = mtod(m0, struct ieee80211_frame *);
1689 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1690 flags |= RT2560_TX_ACK;
1692 dur = rt2560_txtime(RAL_ACK_SIZE, rate, ic->ic_flags) +
1694 *(uint16_t *)wh->i_dur = htole16(dur);
1696 /* tell hardware to add timestamp for probe responses */
1697 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
1698 IEEE80211_FC0_TYPE_MGT &&
1699 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) ==
1700 IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1701 flags |= RT2560_TX_TIMESTAMP;
1704 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0,
1707 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1708 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1709 BUS_DMASYNC_PREWRITE);
1711 DPRINTFN(10, ("sending mgt frame len=%u idx=%u rate=%u\n",
1712 m0->m_pkthdr.len, sc->prioq.cur, rate));
1716 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1717 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1723 rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0,
1724 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
1726 struct ieee80211com *ic = &sc->sc_ic;
1727 struct rt2560_tx_desc *desc;
1728 struct rt2560_tx_data *data;
1729 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1731 int nsegs, rate, error;
1733 desc = &sc->prioq.desc[sc->prioq.cur];
1734 data = &sc->prioq.data[sc->prioq.cur];
1736 rate = params->ibp_rate0 & IEEE80211_RATE_VAL;
1741 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
1744 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1750 if (bpf_peers_present(sc->sc_drvbpf)) {
1751 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1754 tap->wt_rate = rate;
1755 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1756 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1757 tap->wt_antenna = sc->tx_ant;
1759 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1766 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
1767 flags |= RT2560_TX_ACK;
1769 /* XXX need to setup descriptor ourself */
1770 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len,
1771 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0,
1774 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1775 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1776 BUS_DMASYNC_PREWRITE);
1778 DPRINTFN(10, ("sending raw frame len=%u idx=%u rate=%u\n",
1779 m0->m_pkthdr.len, sc->prioq.cur, rate));
1783 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1784 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1790 * Build a RTS control frame.
1792 static struct mbuf *
1793 rt2560_get_rts(struct rt2560_softc *sc, struct ieee80211_frame *wh,
1796 struct ieee80211_frame_rts *rts;
1799 MGETHDR(m, M_DONTWAIT, MT_DATA);
1801 sc->sc_ic.ic_stats.is_tx_nobuf++;
1802 device_printf(sc->sc_dev, "could not allocate RTS frame\n");
1806 rts = mtod(m, struct ieee80211_frame_rts *);
1808 rts->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_CTL |
1809 IEEE80211_FC0_SUBTYPE_RTS;
1810 rts->i_fc[1] = IEEE80211_FC1_DIR_NODS;
1811 *(uint16_t *)rts->i_dur = htole16(dur);
1812 IEEE80211_ADDR_COPY(rts->i_ra, wh->i_addr1);
1813 IEEE80211_ADDR_COPY(rts->i_ta, wh->i_addr2);
1815 m->m_pkthdr.len = m->m_len = sizeof (struct ieee80211_frame_rts);
1821 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0,
1822 struct ieee80211_node *ni)
1824 struct ieee80211com *ic = &sc->sc_ic;
1825 struct rt2560_tx_desc *desc;
1826 struct rt2560_tx_data *data;
1827 struct rt2560_node *rn;
1828 struct ieee80211_rateset *rs;
1829 struct ieee80211_frame *wh;
1830 struct ieee80211_key *k;
1832 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1835 int nsegs, rate, error;
1837 wh = mtod(m0, struct ieee80211_frame *);
1839 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
1840 rs = &ic->ic_sup_rates[ic->ic_curmode];
1841 rate = rs->rs_rates[ic->ic_fixed_rate];
1844 rn = (struct rt2560_node *)ni;
1845 ni->ni_txrate = ral_rssadapt_choose(&rn->rssadapt, rs, wh,
1846 m0->m_pkthdr.len, NULL, 0);
1847 rate = rs->rs_rates[ni->ni_txrate];
1849 rate &= IEEE80211_RATE_VAL;
1851 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1852 k = ieee80211_crypto_encap(ic, ni, m0);
1858 /* packet header may have moved, reset our local pointer */
1859 wh = mtod(m0, struct ieee80211_frame *);
1863 * IEEE Std 802.11-1999, pp 82: "A STA shall use an RTS/CTS exchange
1864 * for directed frames only when the length of the MPDU is greater
1865 * than the length threshold indicated by [...]" ic_rtsthreshold.
1867 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) &&
1868 m0->m_pkthdr.len > ic->ic_rtsthreshold) {
1871 int rtsrate, ackrate;
1873 rtsrate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1874 ackrate = rt2560_ack_rate(ic, rate);
1876 dur = rt2560_txtime(m0->m_pkthdr.len + 4, rate, ic->ic_flags) +
1877 rt2560_txtime(RAL_CTS_SIZE, rtsrate, ic->ic_flags) +
1878 rt2560_txtime(RAL_ACK_SIZE, ackrate, ic->ic_flags) +
1881 m = rt2560_get_rts(sc, wh, dur);
1883 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1884 data = &sc->txq.data[sc->txq.cur_encrypt];
1886 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
1887 m, segs, &nsegs, 0);
1889 device_printf(sc->sc_dev,
1890 "could not map mbuf (error %d)\n", error);
1896 /* avoid multiple free() of the same node for each fragment */
1897 ieee80211_ref_node(ni);
1902 /* RTS frames are not taken into account for rssadapt */
1903 data->id.id_node = NULL;
1905 rt2560_setup_tx_desc(sc, desc, RT2560_TX_ACK |
1906 RT2560_TX_MORE_FRAG, m->m_pkthdr.len, rtsrate, 1,
1909 bus_dmamap_sync(sc->txq.data_dmat, data->map,
1910 BUS_DMASYNC_PREWRITE);
1913 sc->txq.cur_encrypt =
1914 (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1917 * IEEE Std 802.11-1999: when an RTS/CTS exchange is used, the
1918 * asynchronous data frame shall be transmitted after the CTS
1919 * frame and a SIFS period.
1921 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS;
1924 data = &sc->txq.data[sc->txq.cur_encrypt];
1925 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1927 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0,
1929 if (error != 0 && error != EFBIG) {
1930 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1936 mnew = m_defrag(m0, M_DONTWAIT);
1938 device_printf(sc->sc_dev,
1939 "could not defragment mbuf\n");
1945 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
1946 m0, segs, &nsegs, 0);
1948 device_printf(sc->sc_dev,
1949 "could not map mbuf (error %d)\n", error);
1954 /* packet header may have moved, reset our local pointer */
1955 wh = mtod(m0, struct ieee80211_frame *);
1958 if (bpf_peers_present(sc->sc_drvbpf)) {
1959 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1962 tap->wt_rate = rate;
1963 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1964 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1965 tap->wt_antenna = sc->tx_ant;
1967 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1973 /* remember link conditions for rate adaptation algorithm */
1974 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) {
1975 data->id.id_len = m0->m_pkthdr.len;
1976 data->id.id_rateidx = ni->ni_txrate;
1977 data->id.id_node = ni;
1978 data->id.id_rssi = ni->ni_rssi;
1980 data->id.id_node = NULL;
1982 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1983 flags |= RT2560_TX_ACK;
1985 dur = rt2560_txtime(RAL_ACK_SIZE, rt2560_ack_rate(ic, rate),
1986 ic->ic_flags) + RAL_SIFS;
1987 *(uint16_t *)wh->i_dur = htole16(dur);
1990 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1,
1993 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1994 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1995 BUS_DMASYNC_PREWRITE);
1997 DPRINTFN(10, ("sending data frame len=%u idx=%u rate=%u\n",
1998 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate));
2002 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
2003 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT);
2009 rt2560_start(struct ifnet *ifp)
2011 struct rt2560_softc *sc = ifp->if_softc;
2012 struct ieee80211com *ic = &sc->sc_ic;
2014 struct ether_header *eh;
2015 struct ieee80211_node *ni;
2019 /* prevent management frames from being sent if we're not ready */
2020 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2026 IF_POLL(&ic->ic_mgtq, m0);
2028 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) {
2029 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2032 IF_DEQUEUE(&ic->ic_mgtq, m0);
2034 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif;
2035 m0->m_pkthdr.rcvif = NULL;
2037 if (bpf_peers_present(ic->ic_rawbpf))
2038 bpf_mtap(ic->ic_rawbpf, m0);
2040 if (rt2560_tx_mgt(sc, m0, ni) != 0)
2044 if (ic->ic_state != IEEE80211_S_RUN)
2046 IFQ_DRV_DEQUEUE(&ifp->if_snd, m0);
2049 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) {
2050 IFQ_DRV_PREPEND(&ifp->if_snd, m0);
2051 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2055 if (m0->m_len < sizeof (struct ether_header) &&
2056 !(m0 = m_pullup(m0, sizeof (struct ether_header))))
2059 eh = mtod(m0, struct ether_header *);
2060 ni = ieee80211_find_txnode(ic, eh->ether_dhost);
2067 m0 = ieee80211_encap(ic, m0, ni);
2069 ieee80211_free_node(ni);
2073 if (bpf_peers_present(ic->ic_rawbpf))
2074 bpf_mtap(ic->ic_rawbpf, m0);
2076 if (rt2560_tx_data(sc, m0, ni) != 0) {
2077 ieee80211_free_node(ni);
2083 sc->sc_tx_timer = 5;
2084 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2091 rt2560_watchdog(void *arg)
2093 struct rt2560_softc *sc = (struct rt2560_softc *)arg;
2094 struct ieee80211com *ic = &sc->sc_ic;
2096 if (sc->sc_tx_timer > 0) {
2097 if (--sc->sc_tx_timer == 0) {
2098 device_printf(sc->sc_dev, "device timeout\n");
2100 sc->sc_ifp->if_oerrors++;
2103 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2106 ieee80211_watchdog(ic);
2110 * This function allows for fast channel switching in monitor mode (used by
2111 * net-mgmt/kismet). In IBSS mode, we must explicitly reset the interface to
2112 * generate a new beacon frame.
2115 rt2560_reset(struct ifnet *ifp)
2117 struct rt2560_softc *sc = ifp->if_softc;
2118 struct ieee80211com *ic = &sc->sc_ic;
2120 if (ic->ic_opmode != IEEE80211_M_MONITOR)
2123 rt2560_set_chan(sc, ic->ic_curchan);
2129 rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
2131 struct rt2560_softc *sc = ifp->if_softc;
2132 struct ieee80211com *ic = &sc->sc_ic;
2139 if (ifp->if_flags & IFF_UP) {
2140 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2141 rt2560_update_promisc(sc);
2145 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2151 error = ieee80211_ioctl(ic, cmd, data);
2154 if (error == ENETRESET) {
2155 if ((ifp->if_flags & IFF_UP) &&
2156 (ifp->if_drv_flags & IFF_DRV_RUNNING) &&
2157 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL))
2168 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val)
2173 for (ntries = 0; ntries < 100; ntries++) {
2174 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY))
2178 if (ntries == 100) {
2179 device_printf(sc->sc_dev, "could not write to BBP\n");
2183 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val;
2184 RAL_WRITE(sc, RT2560_BBPCSR, tmp);
2186 DPRINTFN(15, ("BBP R%u <- 0x%02x\n", reg, val));
2190 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg)
2195 val = RT2560_BBP_BUSY | reg << 8;
2196 RAL_WRITE(sc, RT2560_BBPCSR, val);
2198 for (ntries = 0; ntries < 100; ntries++) {
2199 val = RAL_READ(sc, RT2560_BBPCSR);
2200 if (!(val & RT2560_BBP_BUSY))
2205 device_printf(sc->sc_dev, "could not read from BBP\n");
2210 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val)
2215 for (ntries = 0; ntries < 100; ntries++) {
2216 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY))
2220 if (ntries == 100) {
2221 device_printf(sc->sc_dev, "could not write to RF\n");
2225 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 |
2227 RAL_WRITE(sc, RT2560_RFCSR, tmp);
2229 /* remember last written value in sc */
2230 sc->rf_regs[reg] = val;
2232 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff));
2236 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c)
2238 struct ieee80211com *ic = &sc->sc_ic;
2242 chan = ieee80211_chan2ieee(ic, c);
2243 if (chan == 0 || chan == IEEE80211_CHAN_ANY)
2246 if (IEEE80211_IS_CHAN_2GHZ(c))
2247 power = min(sc->txpow[chan - 1], 31);
2251 /* adjust txpower using ifconfig settings */
2252 power -= (100 - ic->ic_txpowlimit) / 8;
2254 DPRINTFN(2, ("setting channel to %u, txpower to %u\n", chan, power));
2256 switch (sc->rf_rev) {
2257 case RT2560_RF_2522:
2258 rt2560_rf_write(sc, RAL_RF1, 0x00814);
2259 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]);
2260 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2263 case RT2560_RF_2523:
2264 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2265 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]);
2266 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044);
2267 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2270 case RT2560_RF_2524:
2271 rt2560_rf_write(sc, RAL_RF1, 0x0c808);
2272 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]);
2273 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2274 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2277 case RT2560_RF_2525:
2278 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2279 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]);
2280 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2281 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2283 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2284 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]);
2285 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2286 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2289 case RT2560_RF_2525E:
2290 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2291 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]);
2292 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2293 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282);
2296 case RT2560_RF_2526:
2297 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]);
2298 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2299 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2301 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]);
2302 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2303 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2307 case RT2560_RF_5222:
2308 for (i = 0; rt2560_rf5222[i].chan != chan; i++);
2310 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1);
2311 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2);
2312 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2313 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4);
2317 if (ic->ic_state != IEEE80211_S_SCAN) {
2318 /* set Japan filter bit for channel 14 */
2319 tmp = rt2560_bbp_read(sc, 70);
2321 tmp &= ~RT2560_JAPAN_FILTER;
2323 tmp |= RT2560_JAPAN_FILTER;
2325 rt2560_bbp_write(sc, 70, tmp);
2327 /* clear CRC errors */
2328 RAL_READ(sc, RT2560_CNT0);
2334 * Disable RF auto-tuning.
2337 rt2560_disable_rf_tune(struct rt2560_softc *sc)
2341 if (sc->rf_rev != RT2560_RF_2523) {
2342 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE;
2343 rt2560_rf_write(sc, RAL_RF1, tmp);
2346 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE;
2347 rt2560_rf_write(sc, RAL_RF3, tmp);
2349 DPRINTFN(2, ("disabling RF autotune\n"));
2354 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF
2358 rt2560_enable_tsf_sync(struct rt2560_softc *sc)
2360 struct ieee80211com *ic = &sc->sc_ic;
2361 uint16_t logcwmin, preload;
2364 /* first, disable TSF synchronization */
2365 RAL_WRITE(sc, RT2560_CSR14, 0);
2367 tmp = 16 * ic->ic_bss->ni_intval;
2368 RAL_WRITE(sc, RT2560_CSR12, tmp);
2370 RAL_WRITE(sc, RT2560_CSR13, 0);
2373 preload = (ic->ic_opmode == IEEE80211_M_STA) ? 384 : 1024;
2374 tmp = logcwmin << 16 | preload;
2375 RAL_WRITE(sc, RT2560_BCNOCSR, tmp);
2377 /* finally, enable TSF synchronization */
2378 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN;
2379 if (ic->ic_opmode == IEEE80211_M_STA)
2380 tmp |= RT2560_ENABLE_TSF_SYNC(1);
2382 tmp |= RT2560_ENABLE_TSF_SYNC(2) |
2383 RT2560_ENABLE_BEACON_GENERATOR;
2384 RAL_WRITE(sc, RT2560_CSR14, tmp);
2386 DPRINTF(("enabling TSF synchronization\n"));
2390 rt2560_update_plcp(struct rt2560_softc *sc)
2392 struct ieee80211com *ic = &sc->sc_ic;
2394 /* no short preamble for 1Mbps */
2395 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400);
2397 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) {
2398 /* values taken from the reference driver */
2399 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401);
2400 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402);
2401 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403);
2403 /* same values as above or'ed 0x8 */
2404 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409);
2405 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a);
2406 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b);
2409 DPRINTF(("updating PLCP for %s preamble\n",
2410 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"));
2414 * This function can be called by ieee80211_set_shortslottime(). Refer to
2415 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed.
2418 rt2560_update_slot(struct ifnet *ifp)
2420 struct rt2560_softc *sc = ifp->if_softc;
2421 struct ieee80211com *ic = &sc->sc_ic;
2423 uint16_t tx_sifs, tx_pifs, tx_difs, eifs;
2426 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
2428 /* update the MAC slot boundaries */
2429 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND;
2430 tx_pifs = tx_sifs + slottime;
2431 tx_difs = tx_sifs + 2 * slottime;
2432 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60;
2434 tmp = RAL_READ(sc, RT2560_CSR11);
2435 tmp = (tmp & ~0x1f00) | slottime << 8;
2436 RAL_WRITE(sc, RT2560_CSR11, tmp);
2438 tmp = tx_pifs << 16 | tx_sifs;
2439 RAL_WRITE(sc, RT2560_CSR18, tmp);
2441 tmp = eifs << 16 | tx_difs;
2442 RAL_WRITE(sc, RT2560_CSR19, tmp);
2444 DPRINTF(("setting slottime to %uus\n", slottime));
2448 rt2560_set_basicrates(struct rt2560_softc *sc)
2450 struct ieee80211com *ic = &sc->sc_ic;
2452 /* update basic rate set */
2453 if (ic->ic_curmode == IEEE80211_MODE_11B) {
2454 /* 11b basic rates: 1, 2Mbps */
2455 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3);
2456 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) {
2457 /* 11a basic rates: 6, 12, 24Mbps */
2458 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150);
2460 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */
2461 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f);
2466 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2)
2470 /* set ON period to 70ms and OFF period to 30ms */
2471 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30;
2472 RAL_WRITE(sc, RT2560_LEDCSR, tmp);
2476 rt2560_set_bssid(struct rt2560_softc *sc, uint8_t *bssid)
2480 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
2481 RAL_WRITE(sc, RT2560_CSR5, tmp);
2483 tmp = bssid[4] | bssid[5] << 8;
2484 RAL_WRITE(sc, RT2560_CSR6, tmp);
2486 DPRINTF(("setting BSSID to %6D\n", bssid, ":"));
2490 rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2494 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
2495 RAL_WRITE(sc, RT2560_CSR3, tmp);
2497 tmp = addr[4] | addr[5] << 8;
2498 RAL_WRITE(sc, RT2560_CSR4, tmp);
2500 DPRINTF(("setting MAC address to %6D\n", addr, ":"));
2504 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2508 tmp = RAL_READ(sc, RT2560_CSR3);
2509 addr[0] = tmp & 0xff;
2510 addr[1] = (tmp >> 8) & 0xff;
2511 addr[2] = (tmp >> 16) & 0xff;
2512 addr[3] = (tmp >> 24);
2514 tmp = RAL_READ(sc, RT2560_CSR4);
2515 addr[4] = tmp & 0xff;
2516 addr[5] = (tmp >> 8) & 0xff;
2520 rt2560_update_promisc(struct rt2560_softc *sc)
2522 struct ifnet *ifp = sc->sc_ic.ic_ifp;
2525 tmp = RAL_READ(sc, RT2560_RXCSR0);
2527 tmp &= ~RT2560_DROP_NOT_TO_ME;
2528 if (!(ifp->if_flags & IFF_PROMISC))
2529 tmp |= RT2560_DROP_NOT_TO_ME;
2531 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2533 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
2534 "entering" : "leaving"));
2538 rt2560_get_rf(int rev)
2541 case RT2560_RF_2522: return "RT2522";
2542 case RT2560_RF_2523: return "RT2523";
2543 case RT2560_RF_2524: return "RT2524";
2544 case RT2560_RF_2525: return "RT2525";
2545 case RT2560_RF_2525E: return "RT2525e";
2546 case RT2560_RF_2526: return "RT2526";
2547 case RT2560_RF_5222: return "RT5222";
2548 default: return "unknown";
2553 rt2560_read_eeprom(struct rt2560_softc *sc)
2558 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0);
2559 sc->rf_rev = (val >> 11) & 0x7;
2560 sc->hw_radio = (val >> 10) & 0x1;
2561 sc->led_mode = (val >> 6) & 0x7;
2562 sc->rx_ant = (val >> 4) & 0x3;
2563 sc->tx_ant = (val >> 2) & 0x3;
2564 sc->nb_ant = val & 0x3;
2566 /* read default values for BBP registers */
2567 for (i = 0; i < 16; i++) {
2568 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i);
2569 sc->bbp_prom[i].reg = val >> 8;
2570 sc->bbp_prom[i].val = val & 0xff;
2573 /* read Tx power for all b/g channels */
2574 for (i = 0; i < 14 / 2; i++) {
2575 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i);
2576 sc->txpow[i * 2] = val >> 8;
2577 sc->txpow[i * 2 + 1] = val & 0xff;
2582 rt2560_bbp_init(struct rt2560_softc *sc)
2584 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2587 /* wait for BBP to be ready */
2588 for (ntries = 0; ntries < 100; ntries++) {
2589 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0)
2593 if (ntries == 100) {
2594 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
2598 /* initialize BBP registers to default values */
2599 for (i = 0; i < N(rt2560_def_bbp); i++) {
2600 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg,
2601 rt2560_def_bbp[i].val);
2604 /* initialize BBP registers to values stored in EEPROM */
2605 for (i = 0; i < 16; i++) {
2606 if (sc->bbp_prom[i].reg == 0xff)
2608 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
2617 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna)
2622 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK;
2624 tx |= RT2560_BBP_ANTA;
2625 else if (antenna == 2)
2626 tx |= RT2560_BBP_ANTB;
2628 tx |= RT2560_BBP_DIVERSITY;
2630 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */
2631 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 ||
2632 sc->rf_rev == RT2560_RF_5222)
2633 tx |= RT2560_BBP_FLIPIQ;
2635 rt2560_bbp_write(sc, RT2560_BBP_TX, tx);
2637 /* update values for CCK and OFDM in BBPCSR1 */
2638 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007;
2639 tmp |= (tx & 0x7) << 16 | (tx & 0x7);
2640 RAL_WRITE(sc, RT2560_BBPCSR1, tmp);
2644 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna)
2648 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK;
2650 rx |= RT2560_BBP_ANTA;
2651 else if (antenna == 2)
2652 rx |= RT2560_BBP_ANTB;
2654 rx |= RT2560_BBP_DIVERSITY;
2656 /* need to force no I/Q flip for RF 2525e and 2526 */
2657 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526)
2658 rx &= ~RT2560_BBP_FLIPIQ;
2660 rt2560_bbp_write(sc, RT2560_BBP_RX, rx);
2664 rt2560_init(void *priv)
2666 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2667 struct rt2560_softc *sc = priv;
2668 struct ieee80211com *ic = &sc->sc_ic;
2669 struct ifnet *ifp = ic->ic_ifp;
2677 /* setup tx rings */
2678 tmp = RT2560_PRIO_RING_COUNT << 24 |
2679 RT2560_ATIM_RING_COUNT << 16 |
2680 RT2560_TX_RING_COUNT << 8 |
2681 RT2560_TX_DESC_SIZE;
2683 /* rings must be initialized in this exact order */
2684 RAL_WRITE(sc, RT2560_TXCSR2, tmp);
2685 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr);
2686 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr);
2687 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr);
2688 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr);
2691 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE;
2693 RAL_WRITE(sc, RT2560_RXCSR1, tmp);
2694 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr);
2696 /* initialize MAC registers to default values */
2697 for (i = 0; i < N(rt2560_def_mac); i++)
2698 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val);
2700 IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp));
2701 rt2560_set_macaddr(sc, ic->ic_myaddr);
2703 /* set basic rate set (will be updated later) */
2704 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153);
2706 rt2560_set_txantenna(sc, sc->tx_ant);
2707 rt2560_set_rxantenna(sc, sc->rx_ant);
2708 rt2560_update_slot(ifp);
2709 rt2560_update_plcp(sc);
2710 rt2560_update_led(sc, 0, 0);
2712 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2713 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY);
2715 if (rt2560_bbp_init(sc) != 0) {
2721 /* set default BSS channel */
2722 rt2560_set_chan(sc, ic->ic_curchan);
2725 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR;
2726 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2727 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR;
2728 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2729 tmp |= RT2560_DROP_TODS;
2730 if (!(ifp->if_flags & IFF_PROMISC))
2731 tmp |= RT2560_DROP_NOT_TO_ME;
2733 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2735 /* clear old FCS and Rx FIFO errors */
2736 RAL_READ(sc, RT2560_CNT0);
2737 RAL_READ(sc, RT2560_CNT4);
2739 /* clear any pending interrupts */
2740 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff);
2742 /* enable interrupts */
2743 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
2745 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2746 ifp->if_drv_flags |= IFF_DRV_RUNNING;
2748 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2749 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
2750 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
2752 ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
2759 rt2560_stop(void *priv)
2761 struct rt2560_softc *sc = priv;
2762 struct ieee80211com *ic = &sc->sc_ic;
2763 struct ifnet *ifp = ic->ic_ifp;
2765 sc->sc_tx_timer = 0;
2766 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2768 ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
2771 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX);
2774 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX);
2776 /* reset ASIC (imply reset BBP) */
2777 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2778 RAL_WRITE(sc, RT2560_CSR1, 0);
2780 /* disable interrupts */
2781 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
2783 /* reset Tx and Rx rings */
2784 rt2560_reset_tx_ring(sc, &sc->txq);
2785 rt2560_reset_tx_ring(sc, &sc->atimq);
2786 rt2560_reset_tx_ring(sc, &sc->prioq);
2787 rt2560_reset_tx_ring(sc, &sc->bcnq);
2788 rt2560_reset_rx_ring(sc, &sc->rxq);
2792 rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2793 const struct ieee80211_bpf_params *params)
2795 struct ieee80211com *ic = ni->ni_ic;
2796 struct ifnet *ifp = ic->ic_ifp;
2797 struct rt2560_softc *sc = ifp->if_softc;
2801 /* prevent management frames from being sent if we're not ready */
2802 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2806 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) {
2807 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2809 return ENOBUFS; /* XXX */
2812 if (bpf_peers_present(ic->ic_rawbpf))
2813 bpf_mtap(ic->ic_rawbpf, m);
2817 if (params == NULL) {
2819 * Legacy path; interpret frame contents to decide
2820 * precisely how to send the frame.
2822 if (rt2560_tx_mgt(sc, m, ni) != 0)
2826 * Caller supplied explicit parameters to use in
2827 * sending the frame.
2829 if (rt2560_tx_raw(sc, m, ni, params))
2832 sc->sc_tx_timer = 5;
2833 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2840 ieee80211_free_node(ni);
2842 return EIO; /* XXX */