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_update(struct ieee80211com *, int item);
109 static void rt2560_beacon_expire(struct rt2560_softc *);
110 static void rt2560_wakeup_expire(struct rt2560_softc *);
111 static uint8_t rt2560_rxrate(struct rt2560_rx_desc *);
112 static int rt2560_ack_rate(struct ieee80211com *, int);
113 static void rt2560_scan_start(struct ieee80211com *);
114 static void rt2560_scan_end(struct ieee80211com *);
115 static void rt2560_set_channel(struct ieee80211com *);
116 static uint16_t rt2560_txtime(int, int, uint32_t);
117 static uint8_t rt2560_plcp_signal(int);
118 static void rt2560_setup_tx_desc(struct rt2560_softc *,
119 struct rt2560_tx_desc *, uint32_t, int, int, int,
121 static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *,
122 struct ieee80211_node *);
123 static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *,
124 struct ieee80211_node *);
125 static struct mbuf *rt2560_get_rts(struct rt2560_softc *,
126 struct ieee80211_frame *, uint16_t);
127 static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *,
128 struct ieee80211_node *);
129 static void rt2560_start(struct ifnet *);
130 static void rt2560_watchdog(void *);
131 static int rt2560_reset(struct ifnet *);
132 static int rt2560_ioctl(struct ifnet *, u_long, caddr_t);
133 static void rt2560_bbp_write(struct rt2560_softc *, uint8_t,
135 static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t);
136 static void rt2560_rf_write(struct rt2560_softc *, uint8_t,
138 static void rt2560_set_chan(struct rt2560_softc *,
139 struct ieee80211_channel *);
141 static void rt2560_disable_rf_tune(struct rt2560_softc *);
143 static void rt2560_enable_tsf_sync(struct rt2560_softc *);
144 static void rt2560_update_plcp(struct rt2560_softc *);
145 static void rt2560_update_slot(struct ifnet *);
146 static void rt2560_set_basicrates(struct rt2560_softc *);
147 static void rt2560_update_led(struct rt2560_softc *, int, int);
148 static void rt2560_set_bssid(struct rt2560_softc *, const uint8_t *);
149 static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *);
150 static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *);
151 static void rt2560_update_promisc(struct rt2560_softc *);
152 static const char *rt2560_get_rf(int);
153 static void rt2560_read_eeprom(struct rt2560_softc *);
154 static int rt2560_bbp_init(struct rt2560_softc *);
155 static void rt2560_set_txantenna(struct rt2560_softc *, int);
156 static void rt2560_set_rxantenna(struct rt2560_softc *, int);
157 static void rt2560_init(void *);
158 static int rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *,
159 const struct ieee80211_bpf_params *);
161 static const struct {
164 } rt2560_def_mac[] = {
168 static const struct {
171 } rt2560_def_bbp[] = {
175 static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2;
176 static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2;
177 static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2;
178 static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2;
179 static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2;
180 static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2;
181 static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2;
182 static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2;
184 static const struct {
187 } rt2560_rf5222[] = {
192 rt2560_attach(device_t dev, int id)
194 struct rt2560_softc *sc = device_get_softc(dev);
195 struct ieee80211com *ic = &sc->sc_ic;
201 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
202 MTX_DEF | MTX_RECURSE);
204 callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0);
205 callout_init(&sc->rssadapt_ch, CALLOUT_MPSAFE);
207 /* retrieve RT2560 rev. no */
208 sc->asic_rev = RAL_READ(sc, RT2560_CSR0);
210 /* retrieve MAC address */
211 rt2560_get_macaddr(sc, ic->ic_myaddr);
213 /* retrieve RF rev. no and various other things from EEPROM */
214 rt2560_read_eeprom(sc);
216 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n",
217 sc->asic_rev, rt2560_get_rf(sc->rf_rev));
220 * Allocate Tx and Rx rings.
222 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT);
224 device_printf(sc->sc_dev, "could not allocate Tx ring\n");
228 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT);
230 device_printf(sc->sc_dev, "could not allocate ATIM ring\n");
234 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT);
236 device_printf(sc->sc_dev, "could not allocate Prio ring\n");
240 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT);
242 device_printf(sc->sc_dev, "could not allocate Beacon ring\n");
246 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT);
248 device_printf(sc->sc_dev, "could not allocate Rx ring\n");
252 ifp = sc->sc_ifp = if_alloc(IFT_ETHER);
254 device_printf(sc->sc_dev, "can not if_alloc()\n");
259 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
260 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
261 ifp->if_init = rt2560_init;
262 ifp->if_ioctl = rt2560_ioctl;
263 ifp->if_start = rt2560_start;
264 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
265 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
266 IFQ_SET_READY(&ifp->if_snd);
269 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
270 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */
271 ic->ic_state = IEEE80211_S_INIT;
273 /* set device capabilities */
275 IEEE80211_C_IBSS | /* IBSS mode supported */
276 IEEE80211_C_MONITOR | /* monitor mode supported */
277 IEEE80211_C_HOSTAP | /* HostAp mode supported */
278 IEEE80211_C_TXPMGT | /* tx power management */
279 IEEE80211_C_SHPREAMBLE | /* short preamble supported */
280 IEEE80211_C_SHSLOT | /* short slot time supported */
281 IEEE80211_C_BGSCAN | /* bg scanning support */
282 IEEE80211_C_WPA; /* 802.11i */
285 setbit(&bands, IEEE80211_MODE_11B);
286 setbit(&bands, IEEE80211_MODE_11G);
287 if (sc->rf_rev == RT2560_RF_5222)
288 setbit(&bands, IEEE80211_MODE_11A);
289 ieee80211_init_channels(ic, 0, CTRY_DEFAULT, bands, 0, 1);
291 ieee80211_ifattach(ic);
292 ic->ic_scan_start = rt2560_scan_start;
293 ic->ic_scan_end = rt2560_scan_end;
294 ic->ic_set_channel = rt2560_set_channel;
295 ic->ic_node_alloc = rt2560_node_alloc;
296 ic->ic_updateslot = rt2560_update_slot;
297 ic->ic_reset = rt2560_reset;
298 /* enable s/w bmiss handling in sta mode */
299 ic->ic_flags_ext |= IEEE80211_FEXT_SWBMISS;
301 /* override state transition machine */
302 sc->sc_newstate = ic->ic_newstate;
303 ic->ic_newstate = rt2560_newstate;
304 ic->ic_raw_xmit = rt2560_raw_xmit;
305 ic->ic_update_beacon = rt2560_beacon_update;
306 ieee80211_media_init(ic, rt2560_media_change, ieee80211_media_status);
308 bpfattach2(ifp, DLT_IEEE802_11_RADIO,
309 sizeof (struct ieee80211_frame) + sizeof (sc->sc_txtap),
312 sc->sc_rxtap_len = sizeof sc->sc_rxtap;
313 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
314 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2560_RX_RADIOTAP_PRESENT);
316 sc->sc_txtap_len = sizeof sc->sc_txtap;
317 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
318 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2560_TX_RADIOTAP_PRESENT);
321 * Add a few sysctl knobs.
325 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
326 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
327 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)");
329 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
330 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
331 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)");
333 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
334 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "dwell",
335 CTLFLAG_RW, &sc->dwelltime, 0,
336 "channel dwell time (ms) for AP/station scanning");
339 ieee80211_announce(ic);
343 fail6: rt2560_free_rx_ring(sc, &sc->rxq);
344 fail5: rt2560_free_tx_ring(sc, &sc->bcnq);
345 fail4: rt2560_free_tx_ring(sc, &sc->prioq);
346 fail3: rt2560_free_tx_ring(sc, &sc->atimq);
347 fail2: rt2560_free_tx_ring(sc, &sc->txq);
348 fail1: mtx_destroy(&sc->sc_mtx);
354 rt2560_detach(void *xsc)
356 struct rt2560_softc *sc = xsc;
357 struct ieee80211com *ic = &sc->sc_ic;
358 struct ifnet *ifp = ic->ic_ifp;
361 callout_stop(&sc->watchdog_ch);
362 callout_stop(&sc->rssadapt_ch);
365 ieee80211_ifdetach(ic);
367 rt2560_free_tx_ring(sc, &sc->txq);
368 rt2560_free_tx_ring(sc, &sc->atimq);
369 rt2560_free_tx_ring(sc, &sc->prioq);
370 rt2560_free_tx_ring(sc, &sc->bcnq);
371 rt2560_free_rx_ring(sc, &sc->rxq);
375 mtx_destroy(&sc->sc_mtx);
381 rt2560_resume(void *xsc)
383 struct rt2560_softc *sc = xsc;
384 struct ifnet *ifp = sc->sc_ic.ic_ifp;
386 if (ifp->if_flags & IFF_UP) {
387 ifp->if_init(ifp->if_softc);
388 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
394 rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
399 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
401 *(bus_addr_t *)arg = segs[0].ds_addr;
405 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring,
412 ring->cur = ring->next = 0;
413 ring->cur_encrypt = ring->next_encrypt = 0;
415 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
416 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
417 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE,
418 0, NULL, NULL, &ring->desc_dmat);
420 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
424 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
425 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
427 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
431 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
432 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
435 device_printf(sc->sc_dev, "could not load desc DMA map\n");
439 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF,
441 if (ring->data == NULL) {
442 device_printf(sc->sc_dev, "could not allocate soft data\n");
447 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
448 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
449 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL,
452 device_printf(sc->sc_dev, "could not create data DMA tag\n");
456 for (i = 0; i < count; i++) {
457 error = bus_dmamap_create(ring->data_dmat, 0,
460 device_printf(sc->sc_dev, "could not create DMA map\n");
467 fail: rt2560_free_tx_ring(sc, ring);
472 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
474 struct rt2560_tx_desc *desc;
475 struct rt2560_tx_data *data;
478 for (i = 0; i < ring->count; i++) {
479 desc = &ring->desc[i];
480 data = &ring->data[i];
482 if (data->m != NULL) {
483 bus_dmamap_sync(ring->data_dmat, data->map,
484 BUS_DMASYNC_POSTWRITE);
485 bus_dmamap_unload(ring->data_dmat, data->map);
490 if (data->ni != NULL) {
491 ieee80211_free_node(data->ni);
498 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
501 ring->cur = ring->next = 0;
502 ring->cur_encrypt = ring->next_encrypt = 0;
506 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
508 struct rt2560_tx_data *data;
511 if (ring->desc != NULL) {
512 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
513 BUS_DMASYNC_POSTWRITE);
514 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
515 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
518 if (ring->desc_dmat != NULL)
519 bus_dma_tag_destroy(ring->desc_dmat);
521 if (ring->data != NULL) {
522 for (i = 0; i < ring->count; 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);
532 if (data->ni != NULL)
533 ieee80211_free_node(data->ni);
535 if (data->map != NULL)
536 bus_dmamap_destroy(ring->data_dmat, data->map);
539 free(ring->data, M_DEVBUF);
542 if (ring->data_dmat != NULL)
543 bus_dma_tag_destroy(ring->data_dmat);
547 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring,
550 struct rt2560_rx_desc *desc;
551 struct rt2560_rx_data *data;
556 ring->cur = ring->next = 0;
557 ring->cur_decrypt = 0;
559 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
560 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
561 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE,
562 0, NULL, NULL, &ring->desc_dmat);
564 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
568 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
569 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
571 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
575 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
576 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
579 device_printf(sc->sc_dev, "could not load desc DMA map\n");
583 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF,
585 if (ring->data == NULL) {
586 device_printf(sc->sc_dev, "could not allocate soft data\n");
592 * Pre-allocate Rx buffers and populate Rx ring.
594 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
595 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
596 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
598 device_printf(sc->sc_dev, "could not create data DMA tag\n");
602 for (i = 0; i < count; i++) {
603 desc = &sc->rxq.desc[i];
604 data = &sc->rxq.data[i];
606 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
608 device_printf(sc->sc_dev, "could not create DMA map\n");
612 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
613 if (data->m == NULL) {
614 device_printf(sc->sc_dev,
615 "could not allocate rx mbuf\n");
620 error = bus_dmamap_load(ring->data_dmat, data->map,
621 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr,
624 device_printf(sc->sc_dev,
625 "could not load rx buf DMA map");
629 desc->flags = htole32(RT2560_RX_BUSY);
630 desc->physaddr = htole32(physaddr);
633 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
637 fail: rt2560_free_rx_ring(sc, ring);
642 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
646 for (i = 0; i < ring->count; i++) {
647 ring->desc[i].flags = htole32(RT2560_RX_BUSY);
648 ring->data[i].drop = 0;
651 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
653 ring->cur = ring->next = 0;
654 ring->cur_decrypt = 0;
658 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
660 struct rt2560_rx_data *data;
663 if (ring->desc != NULL) {
664 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
665 BUS_DMASYNC_POSTWRITE);
666 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
667 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
670 if (ring->desc_dmat != NULL)
671 bus_dma_tag_destroy(ring->desc_dmat);
673 if (ring->data != NULL) {
674 for (i = 0; i < ring->count; i++) {
675 data = &ring->data[i];
677 if (data->m != NULL) {
678 bus_dmamap_sync(ring->data_dmat, data->map,
679 BUS_DMASYNC_POSTREAD);
680 bus_dmamap_unload(ring->data_dmat, data->map);
684 if (data->map != NULL)
685 bus_dmamap_destroy(ring->data_dmat, data->map);
688 free(ring->data, M_DEVBUF);
691 if (ring->data_dmat != NULL)
692 bus_dma_tag_destroy(ring->data_dmat);
695 static struct ieee80211_node *
696 rt2560_node_alloc(struct ieee80211_node_table *nt)
698 struct rt2560_node *rn;
700 rn = malloc(sizeof (struct rt2560_node), M_80211_NODE,
703 return (rn != NULL) ? &rn->ni : NULL;
707 rt2560_media_change(struct ifnet *ifp)
709 struct rt2560_softc *sc = ifp->if_softc;
712 error = ieee80211_media_change(ifp);
714 if (error == ENETRESET) {
715 if ((ifp->if_flags & IFF_UP) &&
716 (ifp->if_drv_flags & IFF_DRV_RUNNING))
723 * This function is called for each node present in the node station table.
726 rt2560_iter_func(void *arg, struct ieee80211_node *ni)
728 struct rt2560_node *rn = (struct rt2560_node *)ni;
730 ral_rssadapt_updatestats(&rn->rssadapt);
734 * This function is called periodically (every 100ms) in RUN state to update
735 * the rate adaptation statistics.
738 rt2560_update_rssadapt(void *arg)
740 struct rt2560_softc *sc = arg;
741 struct ieee80211com *ic = &sc->sc_ic;
745 ieee80211_iterate_nodes(&ic->ic_sta, rt2560_iter_func, arg);
746 callout_reset(&sc->rssadapt_ch, hz / 10, rt2560_update_rssadapt, sc);
752 rt2560_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
754 struct rt2560_softc *sc = ic->ic_ifp->if_softc;
755 enum ieee80211_state ostate;
756 struct ieee80211_node *ni;
760 ostate = ic->ic_state;
763 case IEEE80211_S_INIT:
764 callout_stop(&sc->rssadapt_ch);
766 if (ostate == IEEE80211_S_RUN) {
767 /* abort TSF synchronization */
768 RAL_WRITE(sc, RT2560_CSR14, 0);
770 /* turn association led off */
771 rt2560_update_led(sc, 0, 0);
774 case IEEE80211_S_RUN:
777 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
778 rt2560_update_plcp(sc);
779 rt2560_set_basicrates(sc);
780 rt2560_set_bssid(sc, ni->ni_bssid);
783 if (ic->ic_opmode == IEEE80211_M_HOSTAP ||
784 ic->ic_opmode == IEEE80211_M_IBSS) {
785 m = ieee80211_beacon_alloc(ni, &sc->sc_bo);
787 device_printf(sc->sc_dev,
788 "could not allocate beacon\n");
793 ieee80211_ref_node(ni);
794 error = rt2560_tx_bcn(sc, m, ni);
799 /* turn assocation led on */
800 rt2560_update_led(sc, 1, 0);
802 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
803 callout_reset(&sc->rssadapt_ch, hz / 10,
804 rt2560_update_rssadapt, sc);
806 rt2560_enable_tsf_sync(sc);
809 case IEEE80211_S_SCAN:
810 case IEEE80211_S_AUTH:
811 case IEEE80211_S_ASSOC:
816 return (error != 0) ? error : sc->sc_newstate(ic, nstate, arg);
820 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or
824 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr)
830 /* clock C once before the first command */
831 RT2560_EEPROM_CTL(sc, 0);
833 RT2560_EEPROM_CTL(sc, RT2560_S);
834 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
835 RT2560_EEPROM_CTL(sc, RT2560_S);
837 /* write start bit (1) */
838 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
839 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
841 /* write READ opcode (10) */
842 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
843 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
844 RT2560_EEPROM_CTL(sc, RT2560_S);
845 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
847 /* write address (A5-A0 or A7-A0) */
848 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7;
849 for (; n >= 0; n--) {
850 RT2560_EEPROM_CTL(sc, RT2560_S |
851 (((addr >> n) & 1) << RT2560_SHIFT_D));
852 RT2560_EEPROM_CTL(sc, RT2560_S |
853 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C);
856 RT2560_EEPROM_CTL(sc, RT2560_S);
858 /* read data Q15-Q0 */
860 for (n = 15; n >= 0; n--) {
861 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
862 tmp = RAL_READ(sc, RT2560_CSR21);
863 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n;
864 RT2560_EEPROM_CTL(sc, RT2560_S);
867 RT2560_EEPROM_CTL(sc, 0);
869 /* clear Chip Select and clock C */
870 RT2560_EEPROM_CTL(sc, RT2560_S);
871 RT2560_EEPROM_CTL(sc, 0);
872 RT2560_EEPROM_CTL(sc, RT2560_C);
878 * Some frames were processed by the hardware cipher engine and are ready for
882 rt2560_encryption_intr(struct rt2560_softc *sc)
884 struct rt2560_tx_desc *desc;
887 /* retrieve last descriptor index processed by cipher engine */
888 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr;
889 hw /= RT2560_TX_DESC_SIZE;
891 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
892 BUS_DMASYNC_POSTREAD);
894 for (; sc->txq.next_encrypt != hw;) {
895 desc = &sc->txq.desc[sc->txq.next_encrypt];
897 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
898 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY))
901 /* for TKIP, swap eiv field to fix a bug in ASIC */
902 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) ==
903 RT2560_TX_CIPHER_TKIP)
904 desc->eiv = bswap32(desc->eiv);
906 /* mark the frame ready for transmission */
907 desc->flags |= htole32(RT2560_TX_BUSY | RT2560_TX_VALID);
909 DPRINTFN(15, ("encryption done idx=%u\n",
910 sc->txq.next_encrypt));
912 sc->txq.next_encrypt =
913 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT;
916 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
917 BUS_DMASYNC_PREWRITE);
920 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX);
924 rt2560_tx_intr(struct rt2560_softc *sc)
926 struct ieee80211com *ic = &sc->sc_ic;
927 struct ifnet *ifp = ic->ic_ifp;
928 struct rt2560_tx_desc *desc;
929 struct rt2560_tx_data *data;
930 struct rt2560_node *rn;
932 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
933 BUS_DMASYNC_POSTREAD);
936 desc = &sc->txq.desc[sc->txq.next];
937 data = &sc->txq.data[sc->txq.next];
939 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
940 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY) ||
941 !(le32toh(desc->flags) & RT2560_TX_VALID))
944 rn = (struct rt2560_node *)data->ni;
946 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) {
947 case RT2560_TX_SUCCESS:
948 DPRINTFN(10, ("data frame sent successfully\n"));
949 if (data->id.id_node != NULL) {
950 ral_rssadapt_raise_rate(ic, &rn->rssadapt,
956 case RT2560_TX_SUCCESS_RETRY:
957 DPRINTFN(9, ("data frame sent after %u retries\n",
958 (le32toh(desc->flags) >> 5) & 0x7));
962 case RT2560_TX_FAIL_RETRY:
963 DPRINTFN(9, ("sending data frame failed (too much "
965 if (data->id.id_node != NULL) {
966 ral_rssadapt_lower_rate(ic, data->ni,
967 &rn->rssadapt, &data->id);
972 case RT2560_TX_FAIL_INVALID:
973 case RT2560_TX_FAIL_OTHER:
975 device_printf(sc->sc_dev, "sending data frame failed "
976 "0x%08x\n", le32toh(desc->flags));
980 bus_dmamap_sync(sc->txq.data_dmat, data->map,
981 BUS_DMASYNC_POSTWRITE);
982 bus_dmamap_unload(sc->txq.data_dmat, data->map);
985 ieee80211_free_node(data->ni);
988 /* descriptor is no longer valid */
989 desc->flags &= ~htole32(RT2560_TX_VALID);
991 DPRINTFN(15, ("tx done idx=%u\n", sc->txq.next));
994 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT;
997 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
998 BUS_DMASYNC_PREWRITE);
1000 sc->sc_tx_timer = 0;
1001 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1006 rt2560_prio_intr(struct rt2560_softc *sc)
1008 struct ieee80211com *ic = &sc->sc_ic;
1009 struct ifnet *ifp = ic->ic_ifp;
1010 struct rt2560_tx_desc *desc;
1011 struct rt2560_tx_data *data;
1012 struct ieee80211_node *ni;
1016 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1017 BUS_DMASYNC_POSTREAD);
1020 desc = &sc->prioq.desc[sc->prioq.next];
1021 data = &sc->prioq.data[sc->prioq.next];
1023 flags = le32toh(desc->flags);
1024 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0)
1027 switch (flags & RT2560_TX_RESULT_MASK) {
1028 case RT2560_TX_SUCCESS:
1029 DPRINTFN(10, ("mgt frame sent successfully\n"));
1032 case RT2560_TX_SUCCESS_RETRY:
1033 DPRINTFN(9, ("mgt frame sent after %u retries\n",
1034 (flags >> 5) & 0x7));
1037 case RT2560_TX_FAIL_RETRY:
1038 DPRINTFN(9, ("sending mgt frame failed (too much "
1042 case RT2560_TX_FAIL_INVALID:
1043 case RT2560_TX_FAIL_OTHER:
1045 device_printf(sc->sc_dev, "sending mgt frame failed "
1050 bus_dmamap_sync(sc->prioq.data_dmat, data->map,
1051 BUS_DMASYNC_POSTWRITE);
1052 bus_dmamap_unload(sc->prioq.data_dmat, data->map);
1059 /* descriptor is no longer valid */
1060 desc->flags &= ~htole32(RT2560_TX_VALID);
1062 DPRINTFN(15, ("prio done idx=%u\n", sc->prioq.next));
1065 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT;
1067 if (m->m_flags & M_TXCB)
1068 ieee80211_process_callback(ni, m,
1069 (flags & RT2560_TX_RESULT_MASK) &~
1070 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY));
1072 ieee80211_free_node(ni);
1075 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1076 BUS_DMASYNC_PREWRITE);
1078 sc->sc_tx_timer = 0;
1079 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1084 * Some frames were processed by the hardware cipher engine and are ready for
1085 * transmission to the IEEE802.11 layer.
1088 rt2560_decryption_intr(struct rt2560_softc *sc)
1090 struct ieee80211com *ic = &sc->sc_ic;
1091 struct ifnet *ifp = ic->ic_ifp;
1092 struct rt2560_rx_desc *desc;
1093 struct rt2560_rx_data *data;
1094 bus_addr_t physaddr;
1095 struct ieee80211_frame *wh;
1096 struct ieee80211_node *ni;
1097 struct rt2560_node *rn;
1098 struct mbuf *mnew, *m;
1101 /* retrieve last decriptor index processed by cipher engine */
1102 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr;
1103 hw /= RT2560_RX_DESC_SIZE;
1105 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1106 BUS_DMASYNC_POSTREAD);
1108 for (; sc->rxq.cur_decrypt != hw;) {
1109 desc = &sc->rxq.desc[sc->rxq.cur_decrypt];
1110 data = &sc->rxq.data[sc->rxq.cur_decrypt];
1112 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1113 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1121 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 &&
1122 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) {
1128 * Try to allocate a new mbuf for this ring element and load it
1129 * before processing the current mbuf. If the ring element
1130 * cannot be loaded, drop the received packet and reuse the old
1131 * mbuf. In the unlikely case that the old mbuf can't be
1132 * reloaded either, explicitly panic.
1134 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1140 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1141 BUS_DMASYNC_POSTREAD);
1142 bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1144 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1145 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr,
1150 /* try to reload the old mbuf */
1151 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1152 mtod(data->m, void *), MCLBYTES,
1153 rt2560_dma_map_addr, &physaddr, 0);
1155 /* very unlikely that it will fail... */
1156 panic("%s: could not load old rx mbuf",
1157 device_get_name(sc->sc_dev));
1164 * New mbuf successfully loaded, update Rx ring and continue
1169 desc->physaddr = htole32(physaddr);
1172 m->m_pkthdr.rcvif = ifp;
1173 m->m_pkthdr.len = m->m_len =
1174 (le32toh(desc->flags) >> 16) & 0xfff;
1176 if (bpf_peers_present(sc->sc_drvbpf)) {
1177 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap;
1178 uint32_t tsf_lo, tsf_hi;
1180 /* get timestamp (low and high 32 bits) */
1181 tsf_hi = RAL_READ(sc, RT2560_CSR17);
1182 tsf_lo = RAL_READ(sc, RT2560_CSR16);
1185 htole64(((uint64_t)tsf_hi << 32) | tsf_lo);
1187 tap->wr_rate = rt2560_rxrate(desc);
1188 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
1189 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
1190 tap->wr_antenna = sc->rx_ant;
1191 tap->wr_antsignal = RT2560_RSSI(sc, desc->rssi);
1193 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m);
1196 sc->sc_flags |= RAL_INPUT_RUNNING;
1198 wh = mtod(m, struct ieee80211_frame *);
1199 ni = ieee80211_find_rxnode(ic,
1200 (struct ieee80211_frame_min *)wh);
1202 /* send the frame to the 802.11 layer */
1203 ieee80211_input(ic, m, ni, RT2560_RSSI(sc, desc->rssi),
1204 RT2560_NOISE_FLOOR, 0);
1206 /* give rssi to the rate adatation algorithm */
1207 rn = (struct rt2560_node *)ni;
1208 ral_rssadapt_input(ic, ni, &rn->rssadapt,
1209 RT2560_RSSI(sc, desc->rssi));
1211 /* node is no longer needed */
1212 ieee80211_free_node(ni);
1215 sc->sc_flags &= ~RAL_INPUT_RUNNING;
1216 skip: desc->flags = htole32(RT2560_RX_BUSY);
1218 DPRINTFN(15, ("decryption done idx=%u\n", sc->rxq.cur_decrypt));
1220 sc->rxq.cur_decrypt =
1221 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT;
1224 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1225 BUS_DMASYNC_PREWRITE);
1229 * Some frames were received. Pass them to the hardware cipher engine before
1230 * sending them to the 802.11 layer.
1233 rt2560_rx_intr(struct rt2560_softc *sc)
1235 struct rt2560_rx_desc *desc;
1236 struct rt2560_rx_data *data;
1238 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1239 BUS_DMASYNC_POSTREAD);
1242 desc = &sc->rxq.desc[sc->rxq.cur];
1243 data = &sc->rxq.data[sc->rxq.cur];
1245 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1246 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1251 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) ||
1252 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) {
1254 * This should not happen since we did not request
1255 * to receive those frames when we filled RXCSR0.
1257 DPRINTFN(5, ("PHY or CRC error flags 0x%08x\n",
1258 le32toh(desc->flags)));
1262 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) {
1263 DPRINTFN(5, ("bad length\n"));
1267 /* mark the frame for decryption */
1268 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY);
1270 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1272 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT;
1275 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1276 BUS_DMASYNC_PREWRITE);
1279 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT);
1283 rt2560_beacon_update(struct ieee80211com *ic, int item)
1285 struct rt2560_softc *sc = ic->ic_ifp->if_softc;
1286 struct ieee80211_beacon_offsets *bo = &sc->sc_bo;
1288 setbit(bo->bo_flags, item);
1292 * This function is called periodically in IBSS mode when a new beacon must be
1296 rt2560_beacon_expire(struct rt2560_softc *sc)
1298 struct ieee80211com *ic = &sc->sc_ic;
1299 struct rt2560_tx_data *data;
1301 if (ic->ic_opmode != IEEE80211_M_IBSS &&
1302 ic->ic_opmode != IEEE80211_M_HOSTAP)
1305 data = &sc->bcnq.data[sc->bcnq.next];
1307 * Don't send beacon if bsschan isn't set
1309 if (data->ni == NULL)
1312 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
1313 bus_dmamap_unload(sc->bcnq.data_dmat, data->map);
1315 ieee80211_beacon_update(data->ni, &sc->sc_bo, data->m, 1);
1317 if (bpf_peers_present(ic->ic_rawbpf))
1318 bpf_mtap(ic->ic_rawbpf, data->m);
1320 rt2560_tx_bcn(sc, data->m, data->ni);
1322 DPRINTFN(15, ("beacon expired\n"));
1324 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT;
1329 rt2560_wakeup_expire(struct rt2560_softc *sc)
1331 DPRINTFN(2, ("wakeup expired\n"));
1335 rt2560_intr(void *arg)
1337 struct rt2560_softc *sc = arg;
1338 struct ifnet *ifp = sc->sc_ifp;
1343 /* disable interrupts */
1344 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
1346 /* don't re-enable interrupts if we're shutting down */
1347 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1352 r = RAL_READ(sc, RT2560_CSR7);
1353 RAL_WRITE(sc, RT2560_CSR7, r);
1355 if (r & RT2560_BEACON_EXPIRE)
1356 rt2560_beacon_expire(sc);
1358 if (r & RT2560_WAKEUP_EXPIRE)
1359 rt2560_wakeup_expire(sc);
1361 if (r & RT2560_ENCRYPTION_DONE)
1362 rt2560_encryption_intr(sc);
1364 if (r & RT2560_TX_DONE)
1367 if (r & RT2560_PRIO_DONE)
1368 rt2560_prio_intr(sc);
1370 if (r & RT2560_DECRYPTION_DONE)
1371 rt2560_decryption_intr(sc);
1373 if (r & RT2560_RX_DONE)
1376 /* re-enable interrupts */
1377 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
1382 /* quickly determine if a given rate is CCK or OFDM */
1383 #define RAL_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
1385 #define RAL_ACK_SIZE 14 /* 10 + 4(FCS) */
1386 #define RAL_CTS_SIZE 14 /* 10 + 4(FCS) */
1388 #define RAL_SIFS 10 /* us */
1390 #define RT2560_TXRX_TURNAROUND 10 /* us */
1393 * This function is only used by the Rx radiotap code.
1396 rt2560_rxrate(struct rt2560_rx_desc *desc)
1398 if (le32toh(desc->flags) & RT2560_RX_OFDM) {
1399 /* reverse function of rt2560_plcp_signal */
1400 switch (desc->rate) {
1401 case 0xb: return 12;
1402 case 0xf: return 18;
1403 case 0xa: return 24;
1404 case 0xe: return 36;
1405 case 0x9: return 48;
1406 case 0xd: return 72;
1407 case 0x8: return 96;
1408 case 0xc: return 108;
1411 if (desc->rate == 10)
1413 if (desc->rate == 20)
1415 if (desc->rate == 55)
1417 if (desc->rate == 110)
1420 return 2; /* should not get there */
1424 * Return the expected ack rate for a frame transmitted at rate `rate'.
1425 * XXX: this should depend on the destination node basic rate set.
1428 rt2560_ack_rate(struct ieee80211com *ic, int rate)
1437 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate;
1453 /* default to 1Mbps */
1458 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'.
1459 * The function automatically determines the operating mode depending on the
1460 * given rate. `flags' indicates whether short preamble is in use or not.
1463 rt2560_txtime(int len, int rate, uint32_t flags)
1467 if (RAL_RATE_IS_OFDM(rate)) {
1468 /* IEEE Std 802.11a-1999, pp. 37 */
1469 txtime = (8 + 4 * len + 3 + rate - 1) / rate;
1470 txtime = 16 + 4 + 4 * txtime + 6;
1472 /* IEEE Std 802.11b-1999, pp. 28 */
1473 txtime = (16 * len + rate - 1) / rate;
1474 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE))
1484 rt2560_plcp_signal(int rate)
1487 /* CCK rates (returned values are device-dependent) */
1490 case 11: return 0x2;
1491 case 22: return 0x3;
1493 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1494 case 12: return 0xb;
1495 case 18: return 0xf;
1496 case 24: return 0xa;
1497 case 36: return 0xe;
1498 case 48: return 0x9;
1499 case 72: return 0xd;
1500 case 96: return 0x8;
1501 case 108: return 0xc;
1503 /* unsupported rates (should not get there) */
1504 default: return 0xff;
1509 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc,
1510 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr)
1512 struct ieee80211com *ic = &sc->sc_ic;
1513 uint16_t plcp_length;
1516 desc->flags = htole32(flags);
1517 desc->flags |= htole32(len << 16);
1518 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) :
1519 htole32(RT2560_TX_BUSY | RT2560_TX_VALID);
1521 desc->physaddr = htole32(physaddr);
1522 desc->wme = htole16(
1524 RT2560_LOGCWMIN(3) |
1525 RT2560_LOGCWMAX(8));
1527 /* setup PLCP fields */
1528 desc->plcp_signal = rt2560_plcp_signal(rate);
1529 desc->plcp_service = 4;
1531 len += IEEE80211_CRC_LEN;
1532 if (RAL_RATE_IS_OFDM(rate)) {
1533 desc->flags |= htole32(RT2560_TX_OFDM);
1535 plcp_length = len & 0xfff;
1536 desc->plcp_length_hi = plcp_length >> 6;
1537 desc->plcp_length_lo = plcp_length & 0x3f;
1539 plcp_length = (16 * len + rate - 1) / rate;
1541 remainder = (16 * len) % 22;
1542 if (remainder != 0 && remainder < 7)
1543 desc->plcp_service |= RT2560_PLCP_LENGEXT;
1545 desc->plcp_length_hi = plcp_length >> 8;
1546 desc->plcp_length_lo = plcp_length & 0xff;
1548 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1549 desc->plcp_signal |= 0x08;
1554 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0,
1555 struct ieee80211_node *ni)
1557 struct ieee80211com *ic = &sc->sc_ic;
1558 struct rt2560_tx_desc *desc;
1559 struct rt2560_tx_data *data;
1560 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1561 int nsegs, rate, error;
1563 desc = &sc->bcnq.desc[sc->bcnq.cur];
1564 data = &sc->bcnq.data[sc->bcnq.cur];
1566 rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2;
1568 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0,
1569 segs, &nsegs, BUS_DMA_NOWAIT);
1571 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1577 if (bpf_peers_present(sc->sc_drvbpf)) {
1578 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1581 tap->wt_rate = rate;
1582 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1583 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1584 tap->wt_antenna = sc->tx_ant;
1586 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1592 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF |
1593 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr);
1595 DPRINTFN(10, ("sending beacon frame len=%u idx=%u rate=%u\n",
1596 m0->m_pkthdr.len, sc->bcnq.cur, rate));
1598 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1599 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map,
1600 BUS_DMASYNC_PREWRITE);
1602 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT;
1608 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0,
1609 struct ieee80211_node *ni)
1611 struct ieee80211com *ic = &sc->sc_ic;
1612 struct rt2560_tx_desc *desc;
1613 struct rt2560_tx_data *data;
1614 struct ieee80211_frame *wh;
1615 struct ieee80211_key *k;
1616 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1619 int nsegs, rate, error;
1621 desc = &sc->prioq.desc[sc->prioq.cur];
1622 data = &sc->prioq.data[sc->prioq.cur];
1624 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1626 wh = mtod(m0, struct ieee80211_frame *);
1628 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1629 k = ieee80211_crypto_encap(ic, ni, m0);
1636 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
1639 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1645 if (bpf_peers_present(sc->sc_drvbpf)) {
1646 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1649 tap->wt_rate = rate;
1650 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1651 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1652 tap->wt_antenna = sc->tx_ant;
1654 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1660 wh = mtod(m0, struct ieee80211_frame *);
1662 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1663 flags |= RT2560_TX_ACK;
1665 dur = rt2560_txtime(RAL_ACK_SIZE, rate, ic->ic_flags) +
1667 *(uint16_t *)wh->i_dur = htole16(dur);
1669 /* tell hardware to add timestamp for probe responses */
1670 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
1671 IEEE80211_FC0_TYPE_MGT &&
1672 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) ==
1673 IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1674 flags |= RT2560_TX_TIMESTAMP;
1677 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0,
1680 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1681 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1682 BUS_DMASYNC_PREWRITE);
1684 DPRINTFN(10, ("sending mgt frame len=%u idx=%u rate=%u\n",
1685 m0->m_pkthdr.len, sc->prioq.cur, rate));
1689 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1690 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1696 rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0,
1697 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
1699 struct ieee80211com *ic = &sc->sc_ic;
1700 struct rt2560_tx_desc *desc;
1701 struct rt2560_tx_data *data;
1702 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1704 int nsegs, rate, error;
1706 desc = &sc->prioq.desc[sc->prioq.cur];
1707 data = &sc->prioq.data[sc->prioq.cur];
1709 rate = params->ibp_rate0 & IEEE80211_RATE_VAL;
1716 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
1719 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1725 if (bpf_peers_present(sc->sc_drvbpf)) {
1726 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1729 tap->wt_rate = rate;
1730 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1731 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1732 tap->wt_antenna = sc->tx_ant;
1734 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1741 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
1742 flags |= RT2560_TX_ACK;
1744 /* XXX need to setup descriptor ourself */
1745 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len,
1746 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0,
1749 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1750 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1751 BUS_DMASYNC_PREWRITE);
1753 DPRINTFN(10, ("sending raw frame len=%u idx=%u rate=%u\n",
1754 m0->m_pkthdr.len, sc->prioq.cur, rate));
1758 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1759 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1765 * Build a RTS control frame.
1767 static struct mbuf *
1768 rt2560_get_rts(struct rt2560_softc *sc, struct ieee80211_frame *wh,
1771 struct ieee80211_frame_rts *rts;
1774 MGETHDR(m, M_DONTWAIT, MT_DATA);
1776 sc->sc_ic.ic_stats.is_tx_nobuf++;
1777 device_printf(sc->sc_dev, "could not allocate RTS frame\n");
1781 rts = mtod(m, struct ieee80211_frame_rts *);
1783 rts->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_CTL |
1784 IEEE80211_FC0_SUBTYPE_RTS;
1785 rts->i_fc[1] = IEEE80211_FC1_DIR_NODS;
1786 *(uint16_t *)rts->i_dur = htole16(dur);
1787 IEEE80211_ADDR_COPY(rts->i_ra, wh->i_addr1);
1788 IEEE80211_ADDR_COPY(rts->i_ta, wh->i_addr2);
1790 m->m_pkthdr.len = m->m_len = sizeof (struct ieee80211_frame_rts);
1796 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0,
1797 struct ieee80211_node *ni)
1799 struct ieee80211com *ic = &sc->sc_ic;
1800 struct rt2560_tx_desc *desc;
1801 struct rt2560_tx_data *data;
1802 struct rt2560_node *rn;
1803 struct ieee80211_frame *wh;
1804 struct ieee80211_key *k;
1806 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1809 int nsegs, rate, error;
1811 wh = mtod(m0, struct ieee80211_frame *);
1813 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
1814 rate = ic->ic_fixed_rate;
1816 struct ieee80211_rateset *rs;
1819 rn = (struct rt2560_node *)ni;
1820 ni->ni_txrate = ral_rssadapt_choose(&rn->rssadapt, rs, wh,
1821 m0->m_pkthdr.len, NULL, 0);
1822 rate = rs->rs_rates[ni->ni_txrate];
1824 rate &= IEEE80211_RATE_VAL;
1826 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1827 k = ieee80211_crypto_encap(ic, ni, m0);
1833 /* packet header may have moved, reset our local pointer */
1834 wh = mtod(m0, struct ieee80211_frame *);
1838 * IEEE Std 802.11-1999, pp 82: "A STA shall use an RTS/CTS exchange
1839 * for directed frames only when the length of the MPDU is greater
1840 * than the length threshold indicated by [...]" ic_rtsthreshold.
1842 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) &&
1843 m0->m_pkthdr.len > ic->ic_rtsthreshold) {
1846 int rtsrate, ackrate;
1848 rtsrate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1849 ackrate = rt2560_ack_rate(ic, rate);
1851 dur = rt2560_txtime(m0->m_pkthdr.len + 4, rate, ic->ic_flags) +
1852 rt2560_txtime(RAL_CTS_SIZE, rtsrate, ic->ic_flags) +
1853 rt2560_txtime(RAL_ACK_SIZE, ackrate, ic->ic_flags) +
1856 m = rt2560_get_rts(sc, wh, dur);
1858 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1859 data = &sc->txq.data[sc->txq.cur_encrypt];
1861 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
1862 m, segs, &nsegs, 0);
1864 device_printf(sc->sc_dev,
1865 "could not map mbuf (error %d)\n", error);
1871 /* avoid multiple free() of the same node for each fragment */
1872 ieee80211_ref_node(ni);
1877 /* RTS frames are not taken into account for rssadapt */
1878 data->id.id_node = NULL;
1880 rt2560_setup_tx_desc(sc, desc, RT2560_TX_ACK |
1881 RT2560_TX_MORE_FRAG, m->m_pkthdr.len, rtsrate, 1,
1884 bus_dmamap_sync(sc->txq.data_dmat, data->map,
1885 BUS_DMASYNC_PREWRITE);
1888 sc->txq.cur_encrypt =
1889 (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1892 * IEEE Std 802.11-1999: when an RTS/CTS exchange is used, the
1893 * asynchronous data frame shall be transmitted after the CTS
1894 * frame and a SIFS period.
1896 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS;
1899 data = &sc->txq.data[sc->txq.cur_encrypt];
1900 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1902 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0,
1904 if (error != 0 && error != EFBIG) {
1905 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1911 mnew = m_defrag(m0, M_DONTWAIT);
1913 device_printf(sc->sc_dev,
1914 "could not defragment mbuf\n");
1920 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
1921 m0, segs, &nsegs, 0);
1923 device_printf(sc->sc_dev,
1924 "could not map mbuf (error %d)\n", error);
1929 /* packet header may have moved, reset our local pointer */
1930 wh = mtod(m0, struct ieee80211_frame *);
1933 if (bpf_peers_present(sc->sc_drvbpf)) {
1934 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1937 tap->wt_rate = rate;
1938 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1939 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1940 tap->wt_antenna = sc->tx_ant;
1942 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1948 /* remember link conditions for rate adaptation algorithm */
1949 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) {
1950 data->id.id_len = m0->m_pkthdr.len;
1951 data->id.id_rateidx = ni->ni_txrate;
1952 data->id.id_node = ni;
1953 data->id.id_rssi = ni->ni_rssi;
1955 data->id.id_node = NULL;
1957 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1958 flags |= RT2560_TX_ACK;
1960 dur = rt2560_txtime(RAL_ACK_SIZE, rt2560_ack_rate(ic, rate),
1961 ic->ic_flags) + RAL_SIFS;
1962 *(uint16_t *)wh->i_dur = htole16(dur);
1965 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1,
1968 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1969 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1970 BUS_DMASYNC_PREWRITE);
1972 DPRINTFN(10, ("sending data frame len=%u idx=%u rate=%u\n",
1973 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate));
1977 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1978 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT);
1984 rt2560_start(struct ifnet *ifp)
1986 struct rt2560_softc *sc = ifp->if_softc;
1987 struct ieee80211com *ic = &sc->sc_ic;
1989 struct ether_header *eh;
1990 struct ieee80211_node *ni;
1994 /* prevent management frames from being sent if we're not ready */
1995 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2001 IF_POLL(&ic->ic_mgtq, m0);
2003 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) {
2004 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2007 IF_DEQUEUE(&ic->ic_mgtq, m0);
2009 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif;
2010 m0->m_pkthdr.rcvif = NULL;
2012 if (bpf_peers_present(ic->ic_rawbpf))
2013 bpf_mtap(ic->ic_rawbpf, m0);
2015 if (rt2560_tx_mgt(sc, m0, ni) != 0) {
2016 ieee80211_free_node(ni);
2020 if (ic->ic_state != IEEE80211_S_RUN)
2022 IFQ_DRV_DEQUEUE(&ifp->if_snd, m0);
2025 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) {
2026 IFQ_DRV_PREPEND(&ifp->if_snd, m0);
2027 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2031 * Cancel any background scan.
2033 if (ic->ic_flags & IEEE80211_F_SCAN)
2034 ieee80211_cancel_scan(ic);
2036 if (m0->m_len < sizeof (struct ether_header) &&
2037 !(m0 = m_pullup(m0, sizeof (struct ether_header))))
2040 eh = mtod(m0, struct ether_header *);
2041 ni = ieee80211_find_txnode(ic, eh->ether_dhost);
2046 if ((ni->ni_flags & IEEE80211_NODE_PWR_MGT) &&
2047 (m0->m_flags & M_PWR_SAV) == 0) {
2049 * Station in power save mode; pass the frame
2050 * to the 802.11 layer and continue. We'll get
2051 * the frame back when the time is right.
2053 ieee80211_pwrsave(ni, m0);
2055 * If we're in power save mode 'cuz of a bg
2056 * scan cancel it so the traffic can flow.
2057 * The packet we just queued will automatically
2058 * get sent when we drop out of power save.
2061 if (ic->ic_flags & IEEE80211_F_SCAN)
2062 ieee80211_cancel_scan(ic);
2063 ieee80211_free_node(ni);
2070 m0 = ieee80211_encap(ic, m0, ni);
2072 ieee80211_free_node(ni);
2076 if (bpf_peers_present(ic->ic_rawbpf))
2077 bpf_mtap(ic->ic_rawbpf, m0);
2079 if (rt2560_tx_data(sc, m0, ni) != 0) {
2080 ieee80211_free_node(ni);
2086 sc->sc_tx_timer = 5;
2087 ic->ic_lastdata = ticks;
2088 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2095 rt2560_watchdog(void *arg)
2097 struct rt2560_softc *sc = arg;
2099 if (sc->sc_tx_timer > 0) {
2100 if (--sc->sc_tx_timer == 0) {
2101 device_printf(sc->sc_dev, "device timeout\n");
2103 sc->sc_ifp->if_oerrors++;
2106 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2111 * This function allows for fast channel switching in monitor mode (used by
2112 * net-mgmt/kismet). In IBSS mode, we must explicitly reset the interface to
2113 * generate a new beacon frame.
2116 rt2560_reset(struct ifnet *ifp)
2118 struct rt2560_softc *sc = ifp->if_softc;
2119 struct ieee80211com *ic = &sc->sc_ic;
2121 if (ic->ic_opmode != IEEE80211_M_MONITOR)
2124 rt2560_set_chan(sc, ic->ic_curchan);
2130 rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
2132 struct rt2560_softc *sc = ifp->if_softc;
2133 struct ieee80211com *ic = &sc->sc_ic;
2140 if (ifp->if_flags & IFF_UP) {
2142 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2143 rt2560_update_promisc(sc);
2148 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2155 error = ieee80211_ioctl(ic, cmd, data);
2158 if (error == ENETRESET) {
2159 if ((ifp->if_flags & IFF_UP) &&
2160 (ifp->if_drv_flags & IFF_DRV_RUNNING) &&
2161 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL))
2171 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val)
2176 for (ntries = 0; ntries < 100; ntries++) {
2177 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY))
2181 if (ntries == 100) {
2182 device_printf(sc->sc_dev, "could not write to BBP\n");
2186 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val;
2187 RAL_WRITE(sc, RT2560_BBPCSR, tmp);
2189 DPRINTFN(15, ("BBP R%u <- 0x%02x\n", reg, val));
2193 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg)
2198 val = RT2560_BBP_BUSY | reg << 8;
2199 RAL_WRITE(sc, RT2560_BBPCSR, val);
2201 for (ntries = 0; ntries < 100; ntries++) {
2202 val = RAL_READ(sc, RT2560_BBPCSR);
2203 if (!(val & RT2560_BBP_BUSY))
2208 device_printf(sc->sc_dev, "could not read from BBP\n");
2213 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val)
2218 for (ntries = 0; ntries < 100; ntries++) {
2219 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY))
2223 if (ntries == 100) {
2224 device_printf(sc->sc_dev, "could not write to RF\n");
2228 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 |
2230 RAL_WRITE(sc, RT2560_RFCSR, tmp);
2232 /* remember last written value in sc */
2233 sc->rf_regs[reg] = val;
2235 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff));
2239 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c)
2241 struct ieee80211com *ic = &sc->sc_ic;
2245 chan = ieee80211_chan2ieee(ic, c);
2246 if (chan == 0 || chan == IEEE80211_CHAN_ANY)
2249 if (IEEE80211_IS_CHAN_2GHZ(c))
2250 power = min(sc->txpow[chan - 1], 31);
2254 /* adjust txpower using ifconfig settings */
2255 power -= (100 - ic->ic_txpowlimit) / 8;
2257 DPRINTFN(2, ("setting channel to %u, txpower to %u\n", chan, power));
2259 switch (sc->rf_rev) {
2260 case RT2560_RF_2522:
2261 rt2560_rf_write(sc, RAL_RF1, 0x00814);
2262 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]);
2263 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2266 case RT2560_RF_2523:
2267 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2268 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]);
2269 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044);
2270 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2273 case RT2560_RF_2524:
2274 rt2560_rf_write(sc, RAL_RF1, 0x0c808);
2275 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]);
2276 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2277 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2280 case RT2560_RF_2525:
2281 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2282 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]);
2283 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2284 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2286 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2287 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]);
2288 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2289 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2292 case RT2560_RF_2525E:
2293 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2294 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]);
2295 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2296 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282);
2299 case RT2560_RF_2526:
2300 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]);
2301 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2302 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2304 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]);
2305 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2306 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2310 case RT2560_RF_5222:
2311 for (i = 0; rt2560_rf5222[i].chan != chan; i++);
2313 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1);
2314 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2);
2315 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2316 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4);
2319 printf("unknown ral rev=%d\n", sc->rf_rev);
2322 if (ic->ic_state != IEEE80211_S_SCAN) {
2323 /* set Japan filter bit for channel 14 */
2324 tmp = rt2560_bbp_read(sc, 70);
2326 tmp &= ~RT2560_JAPAN_FILTER;
2328 tmp |= RT2560_JAPAN_FILTER;
2330 rt2560_bbp_write(sc, 70, tmp);
2332 /* clear CRC errors */
2333 RAL_READ(sc, RT2560_CNT0);
2338 rt2560_set_channel(struct ieee80211com *ic)
2340 struct ifnet *ifp = ic->ic_ifp;
2341 struct rt2560_softc *sc = ifp->if_softc;
2344 rt2560_set_chan(sc, ic->ic_curchan);
2351 * Disable RF auto-tuning.
2354 rt2560_disable_rf_tune(struct rt2560_softc *sc)
2358 if (sc->rf_rev != RT2560_RF_2523) {
2359 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE;
2360 rt2560_rf_write(sc, RAL_RF1, tmp);
2363 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE;
2364 rt2560_rf_write(sc, RAL_RF3, tmp);
2366 DPRINTFN(2, ("disabling RF autotune\n"));
2371 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF
2375 rt2560_enable_tsf_sync(struct rt2560_softc *sc)
2377 struct ieee80211com *ic = &sc->sc_ic;
2378 uint16_t logcwmin, preload;
2381 /* first, disable TSF synchronization */
2382 RAL_WRITE(sc, RT2560_CSR14, 0);
2384 tmp = 16 * ic->ic_bss->ni_intval;
2385 RAL_WRITE(sc, RT2560_CSR12, tmp);
2387 RAL_WRITE(sc, RT2560_CSR13, 0);
2390 preload = (ic->ic_opmode == IEEE80211_M_STA) ? 384 : 1024;
2391 tmp = logcwmin << 16 | preload;
2392 RAL_WRITE(sc, RT2560_BCNOCSR, tmp);
2394 /* finally, enable TSF synchronization */
2395 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN;
2396 if (ic->ic_opmode == IEEE80211_M_STA)
2397 tmp |= RT2560_ENABLE_TSF_SYNC(1);
2399 tmp |= RT2560_ENABLE_TSF_SYNC(2) |
2400 RT2560_ENABLE_BEACON_GENERATOR;
2401 RAL_WRITE(sc, RT2560_CSR14, tmp);
2403 DPRINTF(("enabling TSF synchronization\n"));
2407 rt2560_update_plcp(struct rt2560_softc *sc)
2409 struct ieee80211com *ic = &sc->sc_ic;
2411 /* no short preamble for 1Mbps */
2412 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400);
2414 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) {
2415 /* values taken from the reference driver */
2416 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401);
2417 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402);
2418 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403);
2420 /* same values as above or'ed 0x8 */
2421 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409);
2422 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a);
2423 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b);
2426 DPRINTF(("updating PLCP for %s preamble\n",
2427 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"));
2431 * This function can be called by ieee80211_set_shortslottime(). Refer to
2432 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed.
2435 rt2560_update_slot(struct ifnet *ifp)
2437 struct rt2560_softc *sc = ifp->if_softc;
2438 struct ieee80211com *ic = &sc->sc_ic;
2440 uint16_t tx_sifs, tx_pifs, tx_difs, eifs;
2443 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
2445 /* update the MAC slot boundaries */
2446 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND;
2447 tx_pifs = tx_sifs + slottime;
2448 tx_difs = tx_sifs + 2 * slottime;
2449 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60;
2451 tmp = RAL_READ(sc, RT2560_CSR11);
2452 tmp = (tmp & ~0x1f00) | slottime << 8;
2453 RAL_WRITE(sc, RT2560_CSR11, tmp);
2455 tmp = tx_pifs << 16 | tx_sifs;
2456 RAL_WRITE(sc, RT2560_CSR18, tmp);
2458 tmp = eifs << 16 | tx_difs;
2459 RAL_WRITE(sc, RT2560_CSR19, tmp);
2461 DPRINTF(("setting slottime to %uus\n", slottime));
2465 rt2560_set_basicrates(struct rt2560_softc *sc)
2467 struct ieee80211com *ic = &sc->sc_ic;
2469 /* update basic rate set */
2470 if (ic->ic_curmode == IEEE80211_MODE_11B) {
2471 /* 11b basic rates: 1, 2Mbps */
2472 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3);
2473 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) {
2474 /* 11a basic rates: 6, 12, 24Mbps */
2475 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150);
2477 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */
2478 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f);
2483 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2)
2487 /* set ON period to 70ms and OFF period to 30ms */
2488 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30;
2489 RAL_WRITE(sc, RT2560_LEDCSR, tmp);
2493 rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid)
2497 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
2498 RAL_WRITE(sc, RT2560_CSR5, tmp);
2500 tmp = bssid[4] | bssid[5] << 8;
2501 RAL_WRITE(sc, RT2560_CSR6, tmp);
2503 DPRINTF(("setting BSSID to %6D\n", bssid, ":"));
2507 rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2511 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
2512 RAL_WRITE(sc, RT2560_CSR3, tmp);
2514 tmp = addr[4] | addr[5] << 8;
2515 RAL_WRITE(sc, RT2560_CSR4, tmp);
2517 DPRINTF(("setting MAC address to %6D\n", addr, ":"));
2521 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2525 tmp = RAL_READ(sc, RT2560_CSR3);
2526 addr[0] = tmp & 0xff;
2527 addr[1] = (tmp >> 8) & 0xff;
2528 addr[2] = (tmp >> 16) & 0xff;
2529 addr[3] = (tmp >> 24);
2531 tmp = RAL_READ(sc, RT2560_CSR4);
2532 addr[4] = tmp & 0xff;
2533 addr[5] = (tmp >> 8) & 0xff;
2537 rt2560_update_promisc(struct rt2560_softc *sc)
2539 struct ifnet *ifp = sc->sc_ic.ic_ifp;
2542 tmp = RAL_READ(sc, RT2560_RXCSR0);
2544 tmp &= ~RT2560_DROP_NOT_TO_ME;
2545 if (!(ifp->if_flags & IFF_PROMISC))
2546 tmp |= RT2560_DROP_NOT_TO_ME;
2548 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2550 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
2551 "entering" : "leaving"));
2555 rt2560_get_rf(int rev)
2558 case RT2560_RF_2522: return "RT2522";
2559 case RT2560_RF_2523: return "RT2523";
2560 case RT2560_RF_2524: return "RT2524";
2561 case RT2560_RF_2525: return "RT2525";
2562 case RT2560_RF_2525E: return "RT2525e";
2563 case RT2560_RF_2526: return "RT2526";
2564 case RT2560_RF_5222: return "RT5222";
2565 default: return "unknown";
2570 rt2560_read_eeprom(struct rt2560_softc *sc)
2575 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0);
2576 sc->rf_rev = (val >> 11) & 0x7;
2577 sc->hw_radio = (val >> 10) & 0x1;
2578 sc->led_mode = (val >> 6) & 0x7;
2579 sc->rx_ant = (val >> 4) & 0x3;
2580 sc->tx_ant = (val >> 2) & 0x3;
2581 sc->nb_ant = val & 0x3;
2583 /* read default values for BBP registers */
2584 for (i = 0; i < 16; i++) {
2585 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i);
2586 sc->bbp_prom[i].reg = val >> 8;
2587 sc->bbp_prom[i].val = val & 0xff;
2590 /* read Tx power for all b/g channels */
2591 for (i = 0; i < 14 / 2; i++) {
2592 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i);
2593 sc->txpow[i * 2] = val >> 8;
2594 sc->txpow[i * 2 + 1] = val & 0xff;
2597 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE);
2598 if ((val & 0xff) == 0xff)
2599 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR;
2601 sc->rssi_corr = val & 0xff;
2602 DPRINTF(("rssi correction %d, calibrate 0x%02x\n",
2603 sc->rssi_corr, val));
2608 rt2560_scan_start(struct ieee80211com *ic)
2610 struct ifnet *ifp = ic->ic_ifp;
2611 struct rt2560_softc *sc = ifp->if_softc;
2613 /* abort TSF synchronization */
2614 RAL_WRITE(sc, RT2560_CSR14, 0);
2615 rt2560_set_bssid(sc, ifp->if_broadcastaddr);
2619 rt2560_scan_end(struct ieee80211com *ic)
2621 struct ifnet *ifp = ic->ic_ifp;
2622 struct rt2560_softc *sc = ifp->if_softc;
2624 rt2560_enable_tsf_sync(sc);
2625 /* XXX keep local copy */
2626 rt2560_set_bssid(sc, ic->ic_bss->ni_bssid);
2630 rt2560_bbp_init(struct rt2560_softc *sc)
2632 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2635 /* wait for BBP to be ready */
2636 for (ntries = 0; ntries < 100; ntries++) {
2637 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0)
2641 if (ntries == 100) {
2642 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
2646 /* initialize BBP registers to default values */
2647 for (i = 0; i < N(rt2560_def_bbp); i++) {
2648 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg,
2649 rt2560_def_bbp[i].val);
2652 /* initialize BBP registers to values stored in EEPROM */
2653 for (i = 0; i < 16; i++) {
2654 if (sc->bbp_prom[i].reg == 0xff)
2656 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
2665 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna)
2670 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK;
2672 tx |= RT2560_BBP_ANTA;
2673 else if (antenna == 2)
2674 tx |= RT2560_BBP_ANTB;
2676 tx |= RT2560_BBP_DIVERSITY;
2678 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */
2679 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 ||
2680 sc->rf_rev == RT2560_RF_5222)
2681 tx |= RT2560_BBP_FLIPIQ;
2683 rt2560_bbp_write(sc, RT2560_BBP_TX, tx);
2685 /* update values for CCK and OFDM in BBPCSR1 */
2686 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007;
2687 tmp |= (tx & 0x7) << 16 | (tx & 0x7);
2688 RAL_WRITE(sc, RT2560_BBPCSR1, tmp);
2692 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna)
2696 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK;
2698 rx |= RT2560_BBP_ANTA;
2699 else if (antenna == 2)
2700 rx |= RT2560_BBP_ANTB;
2702 rx |= RT2560_BBP_DIVERSITY;
2704 /* need to force no I/Q flip for RF 2525e and 2526 */
2705 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526)
2706 rx &= ~RT2560_BBP_FLIPIQ;
2708 rt2560_bbp_write(sc, RT2560_BBP_RX, rx);
2712 rt2560_init(void *priv)
2714 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2715 struct rt2560_softc *sc = priv;
2716 struct ieee80211com *ic = &sc->sc_ic;
2717 struct ifnet *ifp = ic->ic_ifp;
2726 /* setup tx rings */
2727 tmp = RT2560_PRIO_RING_COUNT << 24 |
2728 RT2560_ATIM_RING_COUNT << 16 |
2729 RT2560_TX_RING_COUNT << 8 |
2730 RT2560_TX_DESC_SIZE;
2732 /* rings must be initialized in this exact order */
2733 RAL_WRITE(sc, RT2560_TXCSR2, tmp);
2734 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr);
2735 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr);
2736 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr);
2737 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr);
2740 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE;
2742 RAL_WRITE(sc, RT2560_RXCSR1, tmp);
2743 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr);
2745 /* initialize MAC registers to default values */
2746 for (i = 0; i < N(rt2560_def_mac); i++)
2747 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val);
2749 IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp));
2750 rt2560_set_macaddr(sc, ic->ic_myaddr);
2752 /* set basic rate set (will be updated later) */
2753 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153);
2755 rt2560_set_txantenna(sc, sc->tx_ant);
2756 rt2560_set_rxantenna(sc, sc->rx_ant);
2757 rt2560_update_slot(ifp);
2758 rt2560_update_plcp(sc);
2759 rt2560_update_led(sc, 0, 0);
2761 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2762 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY);
2764 if (rt2560_bbp_init(sc) != 0) {
2770 /* set default BSS channel */
2771 rt2560_set_chan(sc, ic->ic_curchan);
2774 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR;
2775 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2776 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR;
2777 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2778 tmp |= RT2560_DROP_TODS;
2779 if (!(ifp->if_flags & IFF_PROMISC))
2780 tmp |= RT2560_DROP_NOT_TO_ME;
2782 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2784 /* clear old FCS and Rx FIFO errors */
2785 RAL_READ(sc, RT2560_CNT0);
2786 RAL_READ(sc, RT2560_CNT4);
2788 /* clear any pending interrupts */
2789 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff);
2791 /* enable interrupts */
2792 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
2794 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2795 ifp->if_drv_flags |= IFF_DRV_RUNNING;
2797 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2798 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
2799 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
2801 ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
2808 rt2560_stop(void *arg)
2810 struct rt2560_softc *sc = arg;
2811 struct ieee80211com *ic = &sc->sc_ic;
2812 struct ifnet *ifp = ic->ic_ifp;
2813 volatile int *flags = &sc->sc_flags;
2815 while (*flags & RAL_INPUT_RUNNING) {
2816 tsleep(sc, 0, "ralrunning", hz/10);
2820 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
2821 ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
2822 sc->sc_tx_timer = 0;
2823 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2826 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX);
2829 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX);
2831 /* reset ASIC (imply reset BBP) */
2832 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2833 RAL_WRITE(sc, RT2560_CSR1, 0);
2835 /* disable interrupts */
2836 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
2838 /* reset Tx and Rx rings */
2839 rt2560_reset_tx_ring(sc, &sc->txq);
2840 rt2560_reset_tx_ring(sc, &sc->atimq);
2841 rt2560_reset_tx_ring(sc, &sc->prioq);
2842 rt2560_reset_tx_ring(sc, &sc->bcnq);
2843 rt2560_reset_rx_ring(sc, &sc->rxq);
2849 rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2850 const struct ieee80211_bpf_params *params)
2852 struct ieee80211com *ic = ni->ni_ic;
2853 struct ifnet *ifp = ic->ic_ifp;
2854 struct rt2560_softc *sc = ifp->if_softc;
2858 /* prevent management frames from being sent if we're not ready */
2859 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2862 ieee80211_free_node(ni);
2865 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) {
2866 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2869 ieee80211_free_node(ni);
2870 return ENOBUFS; /* XXX */
2873 if (bpf_peers_present(ic->ic_rawbpf))
2874 bpf_mtap(ic->ic_rawbpf, m);
2878 if (params == NULL) {
2880 * Legacy path; interpret frame contents to decide
2881 * precisely how to send the frame.
2883 if (rt2560_tx_mgt(sc, m, ni) != 0)
2887 * Caller supplied explicit parameters to use in
2888 * sending the frame.
2890 if (rt2560_tx_raw(sc, m, ni, params))
2893 sc->sc_tx_timer = 5;
2894 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2901 ieee80211_free_node(ni);
2903 return EIO; /* XXX */