2 * Copyright (c) 2005, 2006
3 * Damien Bergamini <damien.bergamini@free.fr>
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 * $FreeBSD: src/sys/dev/ral/rt2560.c,v 1.3 2006/03/21 21:15:43 damien Exp $
18 * $DragonFly: src/sys/dev/netif/ral/rt2560.c,v 1.10 2007/02/06 12:38:30 sephe Exp $
22 * Ralink Technology RT2560 chipset driver
23 * http://www.ralinktech.com/
26 #include <sys/param.h>
28 #include <sys/endian.h>
29 #include <sys/kernel.h>
30 #include <sys/malloc.h>
32 #include <sys/module.h>
34 #include <sys/socket.h>
35 #include <sys/sockio.h>
36 #include <sys/sysctl.h>
37 #include <sys/serialize.h>
41 #include <net/if_arp.h>
42 #include <net/ethernet.h>
43 #include <net/if_dl.h>
44 #include <net/if_media.h>
45 #include <net/ifq_var.h>
47 #include <netproto/802_11/ieee80211_var.h>
48 #include <netproto/802_11/ieee80211_radiotap.h>
50 #include <dev/netif/ral/if_ralrate.h>
51 #include <dev/netif/ral/rt2560reg.h>
52 #include <dev/netif/ral/rt2560var.h>
54 #define RT2560_RSSI(sc, rssi) \
55 ((rssi) > (RT2560_NOISE_FLOOR + (sc)->rssi_corr) ? \
56 ((rssi) - RT2560_NOISE_FLOOR - (sc)->rssi_corr) : 0)
59 #define DPRINTF(x) do { if (ral_debug > 0) kprintf x; } while (0)
60 #define DPRINTFN(n, x) do { if (ral_debug >= (n)) kprintf x; } while (0)
64 #define DPRINTFN(n, x)
67 static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int,
69 static void rt2560_dma_map_mbuf(void *, bus_dma_segment_t *, int,
71 static int rt2560_alloc_tx_ring(struct rt2560_softc *,
72 struct rt2560_tx_ring *, int);
73 static void rt2560_reset_tx_ring(struct rt2560_softc *,
74 struct rt2560_tx_ring *);
75 static void rt2560_free_tx_ring(struct rt2560_softc *,
76 struct rt2560_tx_ring *);
77 static int rt2560_alloc_rx_ring(struct rt2560_softc *,
78 struct rt2560_rx_ring *, int);
79 static void rt2560_reset_rx_ring(struct rt2560_softc *,
80 struct rt2560_rx_ring *);
81 static void rt2560_free_rx_ring(struct rt2560_softc *,
82 struct rt2560_rx_ring *);
83 static struct ieee80211_node *rt2560_node_alloc(
84 struct ieee80211_node_table *);
85 static int rt2560_media_change(struct ifnet *);
86 static void rt2560_next_scan(void *);
87 static void rt2560_iter_func(void *, struct ieee80211_node *);
88 static void rt2560_update_rssadapt(void *);
89 static int rt2560_newstate(struct ieee80211com *,
90 enum ieee80211_state, int);
91 static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t);
92 static void rt2560_encryption_intr(struct rt2560_softc *);
93 static void rt2560_tx_intr(struct rt2560_softc *);
94 static void rt2560_prio_intr(struct rt2560_softc *);
95 static void rt2560_decryption_intr(struct rt2560_softc *);
96 static void rt2560_rx_intr(struct rt2560_softc *);
97 static void rt2560_beacon_expire(struct rt2560_softc *);
98 static void rt2560_wakeup_expire(struct rt2560_softc *);
99 static uint8_t rt2560_rxrate(struct rt2560_rx_desc *);
100 static int rt2560_ack_rate(struct ieee80211com *, int);
101 static uint16_t rt2560_txtime(int, int, uint32_t);
102 static uint8_t rt2560_plcp_signal(int);
103 static void rt2560_setup_tx_desc(struct rt2560_softc *,
104 struct rt2560_tx_desc *, uint32_t, int, int, int,
106 static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *,
107 struct ieee80211_node *);
108 static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *,
109 struct ieee80211_node *);
110 static struct mbuf *rt2560_get_rts(struct rt2560_softc *,
111 struct ieee80211_frame *, uint16_t);
112 static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *,
113 struct ieee80211_node *);
114 static void rt2560_start(struct ifnet *);
115 static void rt2560_watchdog(struct ifnet *);
116 static int rt2560_reset(struct ifnet *);
117 static int rt2560_ioctl(struct ifnet *, u_long, caddr_t,
119 static void rt2560_bbp_write(struct rt2560_softc *, uint8_t,
121 static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t);
122 static void rt2560_rf_write(struct rt2560_softc *, uint8_t,
124 static void rt2560_set_chan(struct rt2560_softc *,
125 struct ieee80211_channel *);
127 static void rt2560_disable_rf_tune(struct rt2560_softc *);
129 static void rt2560_enable_tsf_sync(struct rt2560_softc *);
130 static void rt2560_update_plcp(struct rt2560_softc *);
131 static void rt2560_update_slot(struct ifnet *);
132 static void rt2560_set_basicrates(struct rt2560_softc *);
133 static void rt2560_update_led(struct rt2560_softc *, int, int);
134 static void rt2560_set_bssid(struct rt2560_softc *, uint8_t *);
135 static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *);
136 static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *);
137 static void rt2560_update_promisc(struct rt2560_softc *);
138 static const char *rt2560_get_rf(int);
139 static void rt2560_read_eeprom(struct rt2560_softc *);
140 static int rt2560_bbp_init(struct rt2560_softc *);
141 static void rt2560_set_txantenna(struct rt2560_softc *, int);
142 static void rt2560_set_rxantenna(struct rt2560_softc *, int);
143 static void rt2560_init(void *);
144 static void rt2560_stop(void *);
145 static void rt2560_intr(void *);
148 * Supported rates for 802.11a/b/g modes (in 500Kbps unit).
150 static const struct ieee80211_rateset rt2560_rateset_11a =
151 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } };
153 static const struct ieee80211_rateset rt2560_rateset_11b =
154 { 4, { 2, 4, 11, 22 } };
156 static const struct ieee80211_rateset rt2560_rateset_11g =
157 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } };
159 static const struct {
162 } rt2560_def_mac[] = {
166 static const struct {
169 } rt2560_def_bbp[] = {
173 static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2;
174 static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2;
175 static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2;
176 static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2;
177 static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2;
178 static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2;
179 static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2;
180 static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2;
182 static const struct {
185 } rt2560_rf5222[] = {
190 rt2560_attach(device_t dev, int id)
192 struct rt2560_softc *sc = device_get_softc(dev);
193 struct ieee80211com *ic = &sc->sc_ic;
194 struct ifnet *ifp = &ic->ic_if;
197 callout_init(&sc->scan_ch);
198 callout_init(&sc->rssadapt_ch);
201 sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->sc_irq_rid,
202 RF_ACTIVE | RF_SHAREABLE);
203 if (sc->sc_irq == NULL) {
204 device_printf(dev, "could not allocate interrupt resource\n");
208 /* retrieve RT2560 rev. no */
209 sc->asic_rev = RAL_READ(sc, RT2560_CSR0);
211 /* retrieve MAC address */
212 rt2560_get_macaddr(sc, ic->ic_myaddr);
214 /* retrieve RF rev. no and various other things from EEPROM */
215 rt2560_read_eeprom(sc);
217 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n",
218 sc->asic_rev, rt2560_get_rf(sc->rf_rev));
221 * Allocate Tx and Rx rings.
223 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT);
225 device_printf(sc->sc_dev, "could not allocate Tx ring\n");
229 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT);
231 device_printf(sc->sc_dev, "could not allocate ATIM ring\n");
235 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT);
237 device_printf(sc->sc_dev, "could not allocate Prio ring\n");
241 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT);
243 device_printf(sc->sc_dev, "could not allocate Beacon ring\n");
247 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT);
249 device_printf(sc->sc_dev, "could not allocate Rx ring\n");
253 sysctl_ctx_init(&sc->sysctl_ctx);
254 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
255 SYSCTL_STATIC_CHILDREN(_hw),
257 device_get_nameunit(dev),
259 if (sc->sysctl_tree == NULL) {
260 device_printf(dev, "could not add sysctl node\n");
266 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
267 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
268 ifp->if_init = rt2560_init;
269 ifp->if_ioctl = rt2560_ioctl;
270 ifp->if_start = rt2560_start;
271 ifp->if_watchdog = rt2560_watchdog;
272 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
273 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_WEP | /* WEP */
288 IEEE80211_C_WPA; /* 802.11i */
290 if (sc->rf_rev == RT2560_RF_5222) {
291 /* set supported .11a rates */
292 ic->ic_sup_rates[IEEE80211_MODE_11A] = rt2560_rateset_11a;
294 /* set supported .11a channels */
295 for (i = 36; i <= 64; i += 4) {
296 ic->ic_channels[i].ic_freq =
297 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
298 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
300 for (i = 100; i <= 140; i += 4) {
301 ic->ic_channels[i].ic_freq =
302 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
303 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
305 for (i = 149; i <= 161; i += 4) {
306 ic->ic_channels[i].ic_freq =
307 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
308 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
312 /* set supported .11b and .11g rates */
313 ic->ic_sup_rates[IEEE80211_MODE_11B] = rt2560_rateset_11b;
314 ic->ic_sup_rates[IEEE80211_MODE_11G] = rt2560_rateset_11g;
316 /* set supported .11b and .11g channels (1 through 14) */
317 for (i = 1; i <= 14; i++) {
318 ic->ic_channels[i].ic_freq =
319 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
320 ic->ic_channels[i].ic_flags =
321 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM |
322 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ;
325 ieee80211_ifattach(ic);
326 ic->ic_node_alloc = rt2560_node_alloc;
327 ic->ic_updateslot = rt2560_update_slot;
328 ic->ic_reset = rt2560_reset;
329 /* enable s/w bmiss handling in sta mode */
330 ic->ic_flags_ext |= IEEE80211_FEXT_SWBMISS;
332 /* override state transition machine */
333 sc->sc_newstate = ic->ic_newstate;
334 ic->ic_newstate = rt2560_newstate;
335 ieee80211_media_init(ic, rt2560_media_change, ieee80211_media_status);
337 bpfattach_dlt(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(&sc->sysctl_ctx,
354 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
355 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)");
357 SYSCTL_ADD_INT(&sc->sysctl_ctx,
358 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
359 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)");
361 SYSCTL_ADD_INT(&sc->sysctl_ctx,
362 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "dwell",
363 CTLFLAG_RW, &sc->dwelltime, 0,
364 "channel dwell time (ms) for AP/station scanning");
366 error = bus_setup_intr(dev, sc->sc_irq, INTR_MPSAFE, rt2560_intr,
367 sc, &sc->sc_ih, ifp->if_serializer);
369 device_printf(dev, "could not set up interrupt\n");
371 ieee80211_ifdetach(ic);
376 ieee80211_announce(ic);
384 rt2560_detach(void *xsc)
386 struct rt2560_softc *sc = xsc;
387 struct ieee80211com *ic = &sc->sc_ic;
388 struct ifnet *ifp = ic->ic_ifp;
390 if (device_is_attached(sc->sc_dev)) {
391 lwkt_serialize_enter(ifp->if_serializer);
393 callout_stop(&sc->scan_ch);
394 callout_stop(&sc->rssadapt_ch);
397 bus_teardown_intr(sc->sc_dev, sc->sc_irq, sc->sc_ih);
399 lwkt_serialize_exit(ifp->if_serializer);
402 ieee80211_ifdetach(ic);
405 rt2560_free_tx_ring(sc, &sc->txq);
406 rt2560_free_tx_ring(sc, &sc->atimq);
407 rt2560_free_tx_ring(sc, &sc->prioq);
408 rt2560_free_tx_ring(sc, &sc->bcnq);
409 rt2560_free_rx_ring(sc, &sc->rxq);
411 if (sc->sc_irq != NULL) {
412 bus_release_resource(sc->sc_dev, SYS_RES_IRQ, sc->sc_irq_rid,
416 if (sc->sysctl_tree != NULL)
417 sysctl_ctx_free(&sc->sysctl_ctx);
423 rt2560_shutdown(void *xsc)
425 struct rt2560_softc *sc = xsc;
426 struct ifnet *ifp = &sc->sc_ic.ic_if;
428 lwkt_serialize_enter(ifp->if_serializer);
430 lwkt_serialize_exit(ifp->if_serializer);
434 rt2560_suspend(void *xsc)
436 struct rt2560_softc *sc = xsc;
437 struct ifnet *ifp = &sc->sc_ic.ic_if;
439 lwkt_serialize_enter(ifp->if_serializer);
441 lwkt_serialize_exit(ifp->if_serializer);
445 rt2560_resume(void *xsc)
447 struct rt2560_softc *sc = xsc;
448 struct ifnet *ifp = sc->sc_ic.ic_ifp;
450 lwkt_serialize_enter(ifp->if_serializer);
451 if (ifp->if_flags & IFF_UP) {
452 ifp->if_init(ifp->if_softc);
453 if (ifp->if_flags & IFF_RUNNING)
456 lwkt_serialize_exit(ifp->if_serializer);
460 rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
465 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
467 *(bus_addr_t *)arg = segs[0].ds_addr;
471 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring,
478 ring->cur = ring->next = 0;
479 ring->cur_encrypt = ring->next_encrypt = 0;
481 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
482 BUS_SPACE_MAXADDR, NULL, NULL, count * RT2560_TX_DESC_SIZE, 1,
483 count * RT2560_TX_DESC_SIZE, 0, &ring->desc_dmat);
485 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
489 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
490 BUS_DMA_WAITOK | BUS_DMA_ZERO, &ring->desc_map);
492 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
496 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
497 count * RT2560_TX_DESC_SIZE,
498 rt2560_dma_map_addr, &ring->physaddr, 0);
500 device_printf(sc->sc_dev, "could not load desc DMA map\n");
502 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
507 ring->data = kmalloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF,
510 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
511 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, RT2560_MAX_SCATTER,
512 MCLBYTES, 0, &ring->data_dmat);
514 device_printf(sc->sc_dev, "could not create data DMA tag\n");
518 for (i = 0; i < count; i++) {
519 error = bus_dmamap_create(ring->data_dmat, 0,
522 device_printf(sc->sc_dev, "could not create DMA map\n");
528 fail: rt2560_free_tx_ring(sc, ring);
533 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
535 struct rt2560_tx_desc *desc;
536 struct rt2560_tx_data *data;
539 for (i = 0; i < ring->count; i++) {
540 desc = &ring->desc[i];
541 data = &ring->data[i];
543 if (data->m != NULL) {
544 bus_dmamap_sync(ring->data_dmat, data->map,
545 BUS_DMASYNC_POSTWRITE);
546 bus_dmamap_unload(ring->data_dmat, data->map);
551 if (data->ni != NULL) {
552 ieee80211_free_node(data->ni);
559 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
562 ring->cur = ring->next = 0;
563 ring->cur_encrypt = ring->next_encrypt = 0;
567 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
569 struct rt2560_tx_data *data;
572 if (ring->desc != NULL) {
573 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
574 BUS_DMASYNC_POSTWRITE);
575 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
576 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
580 if (ring->desc_dmat != NULL) {
581 bus_dma_tag_destroy(ring->desc_dmat);
582 ring->desc_dmat = NULL;
585 if (ring->data != NULL) {
586 for (i = 0; i < ring->count; i++) {
587 data = &ring->data[i];
589 if (data->m != NULL) {
590 bus_dmamap_sync(ring->data_dmat, data->map,
591 BUS_DMASYNC_POSTWRITE);
592 bus_dmamap_unload(ring->data_dmat, data->map);
597 if (data->ni != NULL) {
598 ieee80211_free_node(data->ni);
602 if (data->map != NULL) {
603 bus_dmamap_destroy(ring->data_dmat, data->map);
608 kfree(ring->data, M_DEVBUF);
612 if (ring->data_dmat != NULL) {
613 bus_dma_tag_destroy(ring->data_dmat);
614 ring->data_dmat = NULL;
619 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring,
622 struct rt2560_rx_desc *desc;
623 struct rt2560_rx_data *data;
628 ring->cur = ring->next = 0;
629 ring->cur_decrypt = 0;
631 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
632 BUS_SPACE_MAXADDR, NULL, NULL, count * RT2560_RX_DESC_SIZE, 1,
633 count * RT2560_RX_DESC_SIZE, 0, &ring->desc_dmat);
635 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
639 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
640 BUS_DMA_WAITOK | BUS_DMA_ZERO, &ring->desc_map);
642 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
646 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
647 count * RT2560_RX_DESC_SIZE,
648 rt2560_dma_map_addr, &ring->physaddr, 0);
650 device_printf(sc->sc_dev, "could not load desc DMA map\n");
652 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
657 ring->data = kmalloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF,
661 * Pre-allocate Rx buffers and populate Rx ring.
663 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
664 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0,
667 device_printf(sc->sc_dev, "could not create data DMA tag\n");
671 for (i = 0; i < count; i++) {
672 desc = &sc->rxq.desc[i];
673 data = &sc->rxq.data[i];
675 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
677 device_printf(sc->sc_dev, "could not create DMA map\n");
681 data->m = m_getcl(MB_WAIT, MT_DATA, M_PKTHDR);
682 if (data->m == NULL) {
683 device_printf(sc->sc_dev,
684 "could not allocate rx mbuf\n");
689 error = bus_dmamap_load(ring->data_dmat, data->map,
690 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr,
693 device_printf(sc->sc_dev,
694 "could not load rx buf DMA map");
701 desc->flags = htole32(RT2560_RX_BUSY);
702 desc->physaddr = htole32(physaddr);
705 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
709 fail: rt2560_free_rx_ring(sc, ring);
714 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
718 for (i = 0; i < ring->count; i++) {
719 ring->desc[i].flags = htole32(RT2560_RX_BUSY);
720 ring->data[i].drop = 0;
723 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
725 ring->cur = ring->next = 0;
726 ring->cur_decrypt = 0;
730 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
732 struct rt2560_rx_data *data;
734 if (ring->desc != NULL) {
735 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
736 BUS_DMASYNC_POSTWRITE);
737 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
738 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
742 if (ring->desc_dmat != NULL) {
743 bus_dma_tag_destroy(ring->desc_dmat);
744 ring->desc_dmat = NULL;
747 if (ring->data != NULL) {
750 for (i = 0; i < ring->count; i++) {
751 data = &ring->data[i];
753 if (data->m != NULL) {
754 bus_dmamap_sync(ring->data_dmat, data->map,
755 BUS_DMASYNC_POSTREAD);
756 bus_dmamap_unload(ring->data_dmat, data->map);
761 if (data->map != NULL) {
762 bus_dmamap_destroy(ring->data_dmat, data->map);
767 kfree(ring->data, M_DEVBUF);
771 if (ring->data_dmat != NULL) {
772 bus_dma_tag_destroy(ring->data_dmat);
773 ring->data_dmat = NULL;
777 static struct ieee80211_node *
778 rt2560_node_alloc(struct ieee80211_node_table *nt)
780 struct rt2560_node *rn;
782 rn = kmalloc(sizeof(struct rt2560_node), M_80211_NODE,
785 return (rn != NULL) ? &rn->ni : NULL;
789 rt2560_media_change(struct ifnet *ifp)
791 struct rt2560_softc *sc = ifp->if_softc;
794 error = ieee80211_media_change(ifp);
795 if (error != ENETRESET)
798 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING))
804 * This function is called periodically (every 200ms) during scanning to
805 * switch from one channel to another.
808 rt2560_next_scan(void *arg)
810 struct rt2560_softc *sc = arg;
811 struct ieee80211com *ic = &sc->sc_ic;
812 struct ifnet *ifp = ic->ic_ifp;
814 lwkt_serialize_enter(ifp->if_serializer);
815 if (ic->ic_state == IEEE80211_S_SCAN)
816 ieee80211_next_scan(ic);
817 lwkt_serialize_exit(ifp->if_serializer);
821 * This function is called for each node present in the node station table.
824 rt2560_iter_func(void *arg, struct ieee80211_node *ni)
826 struct rt2560_node *rn = (struct rt2560_node *)ni;
828 ral_rssadapt_updatestats(&rn->rssadapt);
832 * This function is called periodically (every 100ms) in RUN state to update
833 * the rate adaptation statistics.
836 rt2560_update_rssadapt(void *arg)
838 struct rt2560_softc *sc = arg;
839 struct ieee80211com *ic = &sc->sc_ic;
840 struct ifnet *ifp = ic->ic_ifp;
842 lwkt_serialize_enter(ifp->if_serializer);
844 ieee80211_iterate_nodes(&ic->ic_sta, rt2560_iter_func, arg);
845 callout_reset(&sc->rssadapt_ch, hz / 10, rt2560_update_rssadapt, sc);
847 lwkt_serialize_exit(ifp->if_serializer);
851 rt2560_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
853 struct rt2560_softc *sc = ic->ic_ifp->if_softc;
854 enum ieee80211_state ostate;
855 struct ieee80211_node *ni;
859 ostate = ic->ic_state;
860 callout_stop(&sc->scan_ch);
863 case IEEE80211_S_INIT:
864 callout_stop(&sc->rssadapt_ch);
866 if (ostate == IEEE80211_S_RUN) {
867 /* abort TSF synchronization */
868 RAL_WRITE(sc, RT2560_CSR14, 0);
870 /* turn association led off */
871 rt2560_update_led(sc, 0, 0);
875 case IEEE80211_S_SCAN:
876 rt2560_set_chan(sc, ic->ic_curchan);
877 callout_reset(&sc->scan_ch, (sc->dwelltime * hz) / 1000,
878 rt2560_next_scan, sc);
881 case IEEE80211_S_AUTH:
882 rt2560_set_chan(sc, ic->ic_curchan);
885 case IEEE80211_S_ASSOC:
886 rt2560_set_chan(sc, ic->ic_curchan);
889 case IEEE80211_S_RUN:
890 rt2560_set_chan(sc, ic->ic_curchan);
894 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
895 rt2560_update_plcp(sc);
896 rt2560_set_basicrates(sc);
897 rt2560_set_bssid(sc, ni->ni_bssid);
900 if (ic->ic_opmode == IEEE80211_M_HOSTAP ||
901 ic->ic_opmode == IEEE80211_M_IBSS) {
902 m = ieee80211_beacon_alloc(ic, ni, &sc->sc_bo);
904 device_printf(sc->sc_dev,
905 "could not allocate beacon\n");
910 ieee80211_ref_node(ni);
911 error = rt2560_tx_bcn(sc, m, ni);
916 /* turn assocation led on */
917 rt2560_update_led(sc, 1, 0);
919 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
920 callout_reset(&sc->rssadapt_ch, hz / 10,
921 rt2560_update_rssadapt, sc);
923 rt2560_enable_tsf_sync(sc);
928 return (error != 0) ? error : sc->sc_newstate(ic, nstate, arg);
932 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or
936 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr)
942 /* clock C once before the first command */
943 RT2560_EEPROM_CTL(sc, 0);
945 RT2560_EEPROM_CTL(sc, RT2560_S);
946 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
947 RT2560_EEPROM_CTL(sc, RT2560_S);
949 /* write start bit (1) */
950 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
951 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
953 /* write READ opcode (10) */
954 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
955 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
956 RT2560_EEPROM_CTL(sc, RT2560_S);
957 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
959 /* write address (A5-A0 or A7-A0) */
960 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7;
961 for (; n >= 0; n--) {
962 RT2560_EEPROM_CTL(sc, RT2560_S |
963 (((addr >> n) & 1) << RT2560_SHIFT_D));
964 RT2560_EEPROM_CTL(sc, RT2560_S |
965 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C);
968 RT2560_EEPROM_CTL(sc, RT2560_S);
970 /* read data Q15-Q0 */
972 for (n = 15; n >= 0; n--) {
973 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
974 tmp = RAL_READ(sc, RT2560_CSR21);
975 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n;
976 RT2560_EEPROM_CTL(sc, RT2560_S);
979 RT2560_EEPROM_CTL(sc, 0);
981 /* clear Chip Select and clock C */
982 RT2560_EEPROM_CTL(sc, RT2560_S);
983 RT2560_EEPROM_CTL(sc, 0);
984 RT2560_EEPROM_CTL(sc, RT2560_C);
990 * Some frames were processed by the hardware cipher engine and are ready for
994 rt2560_encryption_intr(struct rt2560_softc *sc)
996 struct rt2560_tx_desc *desc;
999 /* retrieve last descriptor index processed by cipher engine */
1000 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr;
1001 hw /= RT2560_TX_DESC_SIZE;
1003 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1004 BUS_DMASYNC_POSTREAD);
1006 for (; sc->txq.next_encrypt != hw;) {
1007 desc = &sc->txq.desc[sc->txq.next_encrypt];
1009 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
1010 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY))
1013 /* for TKIP, swap eiv field to fix a bug in ASIC */
1014 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) ==
1015 RT2560_TX_CIPHER_TKIP)
1016 desc->eiv = bswap32(desc->eiv);
1018 /* mark the frame ready for transmission */
1019 desc->flags |= htole32(RT2560_TX_VALID);
1020 desc->flags |= htole32(RT2560_TX_BUSY);
1022 DPRINTFN(15, ("encryption done idx=%u\n",
1023 sc->txq.next_encrypt));
1025 sc->txq.next_encrypt =
1026 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT;
1029 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1030 BUS_DMASYNC_PREWRITE);
1033 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX);
1037 rt2560_tx_intr(struct rt2560_softc *sc)
1039 struct ieee80211com *ic = &sc->sc_ic;
1040 struct ifnet *ifp = ic->ic_ifp;
1041 struct rt2560_tx_desc *desc;
1042 struct rt2560_tx_data *data;
1043 struct rt2560_node *rn;
1045 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1046 BUS_DMASYNC_POSTREAD);
1049 desc = &sc->txq.desc[sc->txq.next];
1050 data = &sc->txq.data[sc->txq.next];
1052 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
1053 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY) ||
1054 !(le32toh(desc->flags) & RT2560_TX_VALID))
1057 rn = (struct rt2560_node *)data->ni;
1059 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) {
1060 case RT2560_TX_SUCCESS:
1061 DPRINTFN(10, ("data frame sent successfully\n"));
1062 if (data->id.id_node != NULL) {
1063 ral_rssadapt_raise_rate(ic, &rn->rssadapt,
1069 case RT2560_TX_SUCCESS_RETRY:
1070 DPRINTFN(9, ("data frame sent after %u retries\n",
1071 (le32toh(desc->flags) >> 5) & 0x7));
1075 case RT2560_TX_FAIL_RETRY:
1076 DPRINTFN(9, ("sending data frame failed (too much "
1078 if (data->id.id_node != NULL) {
1079 ral_rssadapt_lower_rate(ic, data->ni,
1080 &rn->rssadapt, &data->id);
1085 case RT2560_TX_FAIL_INVALID:
1086 case RT2560_TX_FAIL_OTHER:
1088 device_printf(sc->sc_dev, "sending data frame failed "
1089 "0x%08x\n", le32toh(desc->flags));
1093 bus_dmamap_sync(sc->txq.data_dmat, data->map,
1094 BUS_DMASYNC_POSTWRITE);
1095 bus_dmamap_unload(sc->txq.data_dmat, data->map);
1098 ieee80211_free_node(data->ni);
1101 /* descriptor is no longer valid */
1102 desc->flags &= ~htole32(RT2560_TX_VALID);
1104 DPRINTFN(15, ("tx done idx=%u\n", sc->txq.next));
1107 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT;
1110 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1111 BUS_DMASYNC_PREWRITE);
1113 sc->sc_tx_timer = 0;
1114 ifp->if_flags &= ~IFF_OACTIVE;
1119 rt2560_prio_intr(struct rt2560_softc *sc)
1121 struct ieee80211com *ic = &sc->sc_ic;
1122 struct ifnet *ifp = ic->ic_ifp;
1123 struct rt2560_tx_desc *desc;
1124 struct rt2560_tx_data *data;
1126 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1127 BUS_DMASYNC_POSTREAD);
1130 desc = &sc->prioq.desc[sc->prioq.next];
1131 data = &sc->prioq.data[sc->prioq.next];
1133 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
1134 !(le32toh(desc->flags) & RT2560_TX_VALID))
1137 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) {
1138 case RT2560_TX_SUCCESS:
1139 DPRINTFN(10, ("mgt frame sent successfully\n"));
1142 case RT2560_TX_SUCCESS_RETRY:
1143 DPRINTFN(9, ("mgt frame sent after %u retries\n",
1144 (le32toh(desc->flags) >> 5) & 0x7));
1147 case RT2560_TX_FAIL_RETRY:
1148 DPRINTFN(9, ("sending mgt frame failed (too much "
1152 case RT2560_TX_FAIL_INVALID:
1153 case RT2560_TX_FAIL_OTHER:
1155 device_printf(sc->sc_dev, "sending mgt frame failed "
1156 "0x%08x\n", le32toh(desc->flags));
1159 bus_dmamap_sync(sc->prioq.data_dmat, data->map,
1160 BUS_DMASYNC_POSTWRITE);
1161 bus_dmamap_unload(sc->prioq.data_dmat, data->map);
1164 ieee80211_free_node(data->ni);
1167 /* descriptor is no longer valid */
1168 desc->flags &= ~htole32(RT2560_TX_VALID);
1170 DPRINTFN(15, ("prio done idx=%u\n", sc->prioq.next));
1173 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT;
1176 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1177 BUS_DMASYNC_PREWRITE);
1179 sc->sc_tx_timer = 0;
1180 ifp->if_flags &= ~IFF_OACTIVE;
1185 * Some frames were processed by the hardware cipher engine and are ready for
1186 * transmission to the IEEE802.11 layer.
1189 rt2560_decryption_intr(struct rt2560_softc *sc)
1191 struct ieee80211com *ic = &sc->sc_ic;
1192 struct ifnet *ifp = ic->ic_ifp;
1193 struct rt2560_rx_desc *desc;
1194 struct rt2560_rx_data *data;
1195 bus_addr_t physaddr;
1196 struct ieee80211_frame *wh;
1197 struct ieee80211_node *ni;
1198 struct rt2560_node *rn;
1199 struct mbuf *mnew, *m;
1202 /* retrieve last decriptor index processed by cipher engine */
1203 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr;
1204 hw /= RT2560_RX_DESC_SIZE;
1206 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1207 BUS_DMASYNC_POSTREAD);
1209 for (; sc->rxq.cur_decrypt != hw;) {
1210 desc = &sc->rxq.desc[sc->rxq.cur_decrypt];
1211 data = &sc->rxq.data[sc->rxq.cur_decrypt];
1213 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1214 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1222 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 &&
1223 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) {
1229 * Try to allocate a new mbuf for this ring element and load it
1230 * before processing the current mbuf. If the ring element
1231 * cannot be loaded, drop the received packet and reuse the old
1232 * mbuf. In the unlikely case that the old mbuf can't be
1233 * reloaded either, explicitly panic.
1235 mnew = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
1241 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1242 BUS_DMASYNC_POSTREAD);
1243 bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1245 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1246 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr,
1251 /* try to reload the old mbuf */
1252 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1253 mtod(data->m, void *), MCLBYTES,
1254 rt2560_dma_map_addr, &physaddr, 0);
1256 /* very unlikely that it will fail... */
1257 panic("%s: could not load old rx mbuf",
1258 device_get_name(sc->sc_dev));
1265 * New mbuf successfully loaded, update Rx ring and continue
1270 desc->physaddr = htole32(physaddr);
1273 m->m_pkthdr.rcvif = ifp;
1274 m->m_pkthdr.len = m->m_len =
1275 (le32toh(desc->flags) >> 16) & 0xfff;
1277 if (sc->sc_drvbpf != NULL) {
1278 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap;
1279 uint32_t tsf_lo, tsf_hi;
1281 /* get timestamp (low and high 32 bits) */
1282 tsf_hi = RAL_READ(sc, RT2560_CSR17);
1283 tsf_lo = RAL_READ(sc, RT2560_CSR16);
1286 htole64(((uint64_t)tsf_hi << 32) | tsf_lo);
1288 tap->wr_rate = rt2560_rxrate(desc);
1289 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
1290 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
1291 tap->wr_antenna = sc->rx_ant;
1292 tap->wr_antsignal = RT2560_RSSI(sc, desc->rssi);
1294 bpf_ptap(sc->sc_drvbpf, m, tap, sc->sc_rxtap_len);
1297 wh = mtod(m, struct ieee80211_frame *);
1298 ni = ieee80211_find_rxnode(ic,
1299 (struct ieee80211_frame_min *)wh);
1301 /* send the frame to the 802.11 layer */
1302 ieee80211_input(ic, m, ni, RT2560_RSSI(sc, desc->rssi), 0);
1304 /* give rssi to the rate adatation algorithm */
1305 rn = (struct rt2560_node *)ni;
1306 ral_rssadapt_input(ic, ni, &rn->rssadapt,
1307 RT2560_RSSI(sc, desc->rssi));
1309 /* node is no longer needed */
1310 ieee80211_free_node(ni);
1312 skip: desc->flags = htole32(RT2560_RX_BUSY);
1314 DPRINTFN(15, ("decryption done idx=%u\n", sc->rxq.cur_decrypt));
1316 sc->rxq.cur_decrypt =
1317 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT;
1320 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1321 BUS_DMASYNC_PREWRITE);
1325 * Some frames were received. Pass them to the hardware cipher engine before
1326 * sending them to the 802.11 layer.
1329 rt2560_rx_intr(struct rt2560_softc *sc)
1331 struct rt2560_rx_desc *desc;
1332 struct rt2560_rx_data *data;
1334 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1335 BUS_DMASYNC_POSTREAD);
1338 desc = &sc->rxq.desc[sc->rxq.cur];
1339 data = &sc->rxq.data[sc->rxq.cur];
1341 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1342 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1347 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) ||
1348 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) {
1350 * This should not happen since we did not request
1351 * to receive those frames when we filled RXCSR0.
1353 DPRINTFN(5, ("PHY or CRC error flags 0x%08x\n",
1354 le32toh(desc->flags)));
1358 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) {
1359 DPRINTFN(5, ("bad length\n"));
1363 /* mark the frame for decryption */
1364 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY);
1366 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1368 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT;
1371 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1372 BUS_DMASYNC_PREWRITE);
1375 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT);
1379 * This function is called periodically in IBSS mode when a new beacon must be
1383 rt2560_beacon_expire(struct rt2560_softc *sc)
1385 struct ieee80211com *ic = &sc->sc_ic;
1386 struct rt2560_tx_data *data;
1388 if (ic->ic_opmode != IEEE80211_M_IBSS &&
1389 ic->ic_opmode != IEEE80211_M_HOSTAP)
1392 data = &sc->bcnq.data[sc->bcnq.next];
1394 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
1395 bus_dmamap_unload(sc->bcnq.data_dmat, data->map);
1397 ieee80211_beacon_update(ic, data->ni, &sc->sc_bo, data->m, 1);
1399 if (ic->ic_rawbpf != NULL)
1400 bpf_mtap(ic->ic_rawbpf, data->m);
1402 rt2560_tx_bcn(sc, data->m, data->ni);
1404 DPRINTFN(15, ("beacon expired\n"));
1406 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT;
1411 rt2560_wakeup_expire(struct rt2560_softc *sc)
1413 DPRINTFN(2, ("wakeup expired\n"));
1417 rt2560_intr(void *arg)
1419 struct rt2560_softc *sc = arg;
1420 struct ifnet *ifp = &sc->sc_ic.ic_if;
1423 /* disable interrupts */
1424 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
1426 /* don't re-enable interrupts if we're shutting down */
1427 if (!(ifp->if_flags & IFF_RUNNING))
1430 r = RAL_READ(sc, RT2560_CSR7);
1431 RAL_WRITE(sc, RT2560_CSR7, r);
1433 if (r & RT2560_BEACON_EXPIRE)
1434 rt2560_beacon_expire(sc);
1436 if (r & RT2560_WAKEUP_EXPIRE)
1437 rt2560_wakeup_expire(sc);
1439 if (r & RT2560_PRIO_DONE)
1440 rt2560_prio_intr(sc);
1442 if (r & (RT2560_TX_DONE | RT2560_ENCRYPTION_DONE)) {
1445 for (i = 0; i < 2; ++i) {
1447 rt2560_encryption_intr(sc);
1451 if (r & (RT2560_DECRYPTION_DONE | RT2560_RX_DONE)) {
1454 for (i = 0; i < 2; ++i) {
1455 rt2560_decryption_intr(sc);
1460 /* re-enable interrupts */
1461 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
1464 /* quickly determine if a given rate is CCK or OFDM */
1465 #define RAL_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
1467 #define RAL_ACK_SIZE 14 /* 10 + 4(FCS) */
1468 #define RAL_CTS_SIZE 14 /* 10 + 4(FCS) */
1470 #define RAL_SIFS 10 /* us */
1472 #define RT2560_TXRX_TURNAROUND 10 /* us */
1475 * This function is only used by the Rx radiotap code.
1478 rt2560_rxrate(struct rt2560_rx_desc *desc)
1480 if (le32toh(desc->flags) & RT2560_RX_OFDM) {
1481 /* reverse function of rt2560_plcp_signal */
1482 switch (desc->rate) {
1483 case 0xb: return 12;
1484 case 0xf: return 18;
1485 case 0xa: return 24;
1486 case 0xe: return 36;
1487 case 0x9: return 48;
1488 case 0xd: return 72;
1489 case 0x8: return 96;
1490 case 0xc: return 108;
1493 if (desc->rate == 10)
1495 if (desc->rate == 20)
1497 if (desc->rate == 55)
1499 if (desc->rate == 110)
1502 return 2; /* should not get there */
1506 * Return the expected ack rate for a frame transmitted at rate `rate'.
1507 * XXX: this should depend on the destination node basic rate set.
1510 rt2560_ack_rate(struct ieee80211com *ic, int rate)
1519 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate;
1535 /* default to 1Mbps */
1540 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'.
1541 * The function automatically determines the operating mode depending on the
1542 * given rate. `flags' indicates whether short preamble is in use or not.
1545 rt2560_txtime(int len, int rate, uint32_t flags)
1549 if (RAL_RATE_IS_OFDM(rate)) {
1550 /* IEEE Std 802.11a-1999, pp. 37 */
1551 txtime = (8 + 4 * len + 3 + rate - 1) / rate;
1552 txtime = 16 + 4 + 4 * txtime + 6;
1554 /* IEEE Std 802.11b-1999, pp. 28 */
1555 txtime = (16 * len + rate - 1) / rate;
1556 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE))
1566 rt2560_plcp_signal(int rate)
1569 /* CCK rates (returned values are device-dependent) */
1572 case 11: return 0x2;
1573 case 22: return 0x3;
1575 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1576 case 12: return 0xb;
1577 case 18: return 0xf;
1578 case 24: return 0xa;
1579 case 36: return 0xe;
1580 case 48: return 0x9;
1581 case 72: return 0xd;
1582 case 96: return 0x8;
1583 case 108: return 0xc;
1585 /* unsupported rates (should not get there) */
1586 default: return 0xff;
1591 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc,
1592 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr)
1594 struct ieee80211com *ic = &sc->sc_ic;
1595 uint16_t plcp_length;
1598 desc->flags = htole32(flags);
1599 desc->flags |= htole32(len << 16);
1601 desc->flags |= htole32(RT2560_TX_VALID);
1603 desc->physaddr = htole32(physaddr);
1604 desc->wme = htole16(
1606 RT2560_LOGCWMIN(3) |
1607 RT2560_LOGCWMAX(8));
1609 /* setup PLCP fields */
1610 desc->plcp_signal = rt2560_plcp_signal(rate);
1611 desc->plcp_service = 4;
1613 len += IEEE80211_CRC_LEN;
1614 if (RAL_RATE_IS_OFDM(rate)) {
1615 desc->flags |= htole32(RT2560_TX_OFDM);
1617 plcp_length = len & 0xfff;
1618 desc->plcp_length_hi = plcp_length >> 6;
1619 desc->plcp_length_lo = plcp_length & 0x3f;
1621 plcp_length = (16 * len + rate - 1) / rate;
1623 remainder = (16 * len) % 22;
1624 if (remainder != 0 && remainder < 7)
1625 desc->plcp_service |= RT2560_PLCP_LENGEXT;
1627 desc->plcp_length_hi = plcp_length >> 8;
1628 desc->plcp_length_lo = plcp_length & 0xff;
1630 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1631 desc->plcp_signal |= 0x08;
1634 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY)
1635 : htole32(RT2560_TX_BUSY);
1639 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0,
1640 struct ieee80211_node *ni)
1642 struct ieee80211com *ic = &sc->sc_ic;
1643 struct rt2560_tx_desc *desc;
1644 struct rt2560_tx_data *data;
1648 desc = &sc->bcnq.desc[sc->bcnq.cur];
1649 data = &sc->bcnq.data[sc->bcnq.cur];
1651 rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2;
1653 error = bus_dmamap_load_mbuf(sc->bcnq.data_dmat, data->map, m0,
1654 rt2560_dma_map_mbuf, &paddr,
1657 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1663 if (sc->sc_drvbpf != NULL) {
1664 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1667 tap->wt_rate = rate;
1668 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1669 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1670 tap->wt_antenna = sc->tx_ant;
1672 bpf_ptap(sc->sc_drvbpf, m0, tap, sc->sc_txtap_len);
1678 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF |
1679 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, paddr);
1681 DPRINTFN(10, ("sending beacon frame len=%u idx=%u rate=%u\n",
1682 m0->m_pkthdr.len, sc->bcnq.cur, rate));
1684 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1685 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map,
1686 BUS_DMASYNC_PREWRITE);
1688 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT;
1694 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0,
1695 struct ieee80211_node *ni)
1697 struct ieee80211com *ic = &sc->sc_ic;
1698 struct rt2560_tx_desc *desc;
1699 struct rt2560_tx_data *data;
1700 struct ieee80211_frame *wh;
1706 desc = &sc->prioq.desc[sc->prioq.cur];
1707 data = &sc->prioq.data[sc->prioq.cur];
1709 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1711 error = bus_dmamap_load_mbuf(sc->prioq.data_dmat, data->map, m0,
1712 rt2560_dma_map_mbuf, &paddr, 0);
1714 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1720 if (sc->sc_drvbpf != NULL) {
1721 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1724 tap->wt_rate = rate;
1725 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1726 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1727 tap->wt_antenna = sc->tx_ant;
1729 bpf_ptap(sc->sc_drvbpf, m0, tap, sc->sc_txtap_len);
1735 wh = mtod(m0, struct ieee80211_frame *);
1737 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1738 flags |= RT2560_TX_ACK;
1740 dur = rt2560_txtime(RAL_ACK_SIZE, rate, ic->ic_flags) +
1742 *(uint16_t *)wh->i_dur = htole16(dur);
1744 /* tell hardware to add timestamp for probe responses */
1745 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
1746 IEEE80211_FC0_TYPE_MGT &&
1747 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) ==
1748 IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1749 flags |= RT2560_TX_TIMESTAMP;
1752 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, paddr);
1754 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1755 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1756 BUS_DMASYNC_PREWRITE);
1758 DPRINTFN(10, ("sending mgt frame len=%u idx=%u rate=%u\n",
1759 m0->m_pkthdr.len, sc->prioq.cur, rate));
1763 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1764 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1770 * Build a RTS control frame.
1772 static struct mbuf *
1773 rt2560_get_rts(struct rt2560_softc *sc, struct ieee80211_frame *wh,
1776 struct ieee80211_frame_rts *rts;
1779 MGETHDR(m, MB_DONTWAIT, MT_DATA);
1781 sc->sc_ic.ic_stats.is_tx_nobuf++;
1782 device_printf(sc->sc_dev, "could not allocate RTS frame\n");
1786 rts = mtod(m, struct ieee80211_frame_rts *);
1788 rts->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_CTL |
1789 IEEE80211_FC0_SUBTYPE_RTS;
1790 rts->i_fc[1] = IEEE80211_FC1_DIR_NODS;
1791 *(uint16_t *)rts->i_dur = htole16(dur);
1792 IEEE80211_ADDR_COPY(rts->i_ra, wh->i_addr1);
1793 IEEE80211_ADDR_COPY(rts->i_ta, wh->i_addr2);
1795 m->m_pkthdr.len = m->m_len = sizeof(struct ieee80211_frame_rts);
1801 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0,
1802 struct ieee80211_node *ni)
1804 struct ieee80211com *ic = &sc->sc_ic;
1805 struct rt2560_tx_desc *desc;
1806 struct rt2560_tx_data *data;
1807 struct rt2560_node *rn;
1808 struct ieee80211_rateset *rs;
1809 struct ieee80211_frame *wh;
1810 struct ieee80211_key *k;
1817 wh = mtod(m0, struct ieee80211_frame *);
1819 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
1820 rs = &ic->ic_sup_rates[ic->ic_curmode];
1821 rate = rs->rs_rates[ic->ic_fixed_rate];
1824 rn = (struct rt2560_node *)ni;
1825 ni->ni_txrate = ral_rssadapt_choose(&rn->rssadapt, rs, wh,
1826 m0->m_pkthdr.len, NULL, 0);
1827 rate = rs->rs_rates[ni->ni_txrate];
1829 rate &= IEEE80211_RATE_VAL;
1831 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1832 k = ieee80211_crypto_encap(ic, ni, m0);
1838 /* packet header may have moved, reset our local pointer */
1839 wh = mtod(m0, struct ieee80211_frame *);
1843 * IEEE Std 802.11-1999, pp 82: "A STA shall use an RTS/CTS exchange
1844 * for directed frames only when the length of the MPDU is greater
1845 * than the length threshold indicated by [...]" ic_rtsthreshold.
1847 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) &&
1848 m0->m_pkthdr.len > ic->ic_rtsthreshold) {
1851 int rtsrate, ackrate;
1853 rtsrate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1854 ackrate = rt2560_ack_rate(ic, rate);
1856 dur = rt2560_txtime(m0->m_pkthdr.len + 4, rate, ic->ic_flags) +
1857 rt2560_txtime(RAL_CTS_SIZE, rtsrate, ic->ic_flags) +
1858 rt2560_txtime(RAL_ACK_SIZE, ackrate, ic->ic_flags) +
1861 m = rt2560_get_rts(sc, wh, dur);
1863 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1864 data = &sc->txq.data[sc->txq.cur_encrypt];
1866 error = bus_dmamap_load_mbuf(sc->txq.data_dmat, data->map,
1867 m, rt2560_dma_map_mbuf, &paddr, 0);
1869 device_printf(sc->sc_dev,
1870 "could not map mbuf (error %d)\n", error);
1876 /* avoid multiple free() of the same node for each fragment */
1877 ieee80211_ref_node(ni);
1882 /* RTS frames are not taken into account for rssadapt */
1883 data->id.id_node = NULL;
1885 rt2560_setup_tx_desc(sc, desc, RT2560_TX_ACK |
1886 RT2560_TX_MORE_FRAG, m->m_pkthdr.len, rtsrate, 1, paddr);
1888 bus_dmamap_sync(sc->txq.data_dmat, data->map,
1889 BUS_DMASYNC_PREWRITE);
1892 sc->txq.cur_encrypt =
1893 (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1896 * IEEE Std 802.11-1999: when an RTS/CTS exchange is used, the
1897 * asynchronous data frame shall be transmitted after the CTS
1898 * frame and a SIFS period.
1900 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS;
1903 data = &sc->txq.data[sc->txq.cur_encrypt];
1904 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1906 error = bus_dmamap_load_mbuf(sc->txq.data_dmat, data->map, m0,
1907 rt2560_dma_map_mbuf, &paddr, 0);
1908 if (error != 0 && error != EFBIG) {
1909 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1915 mnew = m_defrag(m0, MB_DONTWAIT);
1917 device_printf(sc->sc_dev,
1918 "could not defragment mbuf\n");
1924 error = bus_dmamap_load_mbuf(sc->txq.data_dmat, data->map,
1925 m0, rt2560_dma_map_mbuf, &paddr,
1928 device_printf(sc->sc_dev,
1929 "could not map mbuf (error %d)\n", error);
1934 /* packet header may have moved, reset our local pointer */
1935 wh = mtod(m0, struct ieee80211_frame *);
1938 if (sc->sc_drvbpf != NULL) {
1939 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1942 tap->wt_rate = rate;
1943 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1944 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1945 tap->wt_antenna = sc->tx_ant;
1947 bpf_ptap(sc->sc_drvbpf, m0, tap, sc->sc_txtap_len);
1953 /* remember link conditions for rate adaptation algorithm */
1954 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) {
1955 data->id.id_len = m0->m_pkthdr.len;
1956 data->id.id_rateidx = ni->ni_txrate;
1957 data->id.id_node = ni;
1958 data->id.id_rssi = ni->ni_rssi;
1960 data->id.id_node = NULL;
1962 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1963 flags |= RT2560_TX_ACK;
1965 dur = rt2560_txtime(RAL_ACK_SIZE, rt2560_ack_rate(ic, rate),
1966 ic->ic_flags) + RAL_SIFS;
1967 *(uint16_t *)wh->i_dur = htole16(dur);
1970 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, paddr);
1972 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1973 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1974 BUS_DMASYNC_PREWRITE);
1976 DPRINTFN(10, ("sending data frame len=%u idx=%u rate=%u\n",
1977 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate));
1981 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1982 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT);
1988 rt2560_start(struct ifnet *ifp)
1990 struct rt2560_softc *sc = ifp->if_softc;
1991 struct ieee80211com *ic = &sc->sc_ic;
1993 struct ether_header *eh;
1994 struct ieee80211_node *ni;
1996 /* prevent management frames from being sent if we're not ready */
1997 if (!(ifp->if_flags & IFF_RUNNING))
2001 IF_POLL(&ic->ic_mgtq, m0);
2003 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) {
2004 ifp->if_flags |= IFF_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 (ic->ic_rawbpf != NULL)
2013 bpf_mtap(ic->ic_rawbpf, m0);
2015 if (rt2560_tx_mgt(sc, m0, ni) != 0)
2019 if (ic->ic_state != IEEE80211_S_RUN)
2021 m0 = ifq_poll(&ifp->if_snd);
2024 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) {
2025 ifp->if_flags |= IFF_OACTIVE;
2028 m0 = ifq_dequeue(&ifp->if_snd, m0);
2030 if (m0->m_len < sizeof (struct ether_header) &&
2031 !(m0 = m_pullup(m0, sizeof (struct ether_header))))
2034 eh = mtod(m0, struct ether_header *);
2035 ni = ieee80211_find_txnode(ic, eh->ether_dhost);
2042 m0 = ieee80211_encap(ic, m0, ni);
2044 ieee80211_free_node(ni);
2048 if (ic->ic_rawbpf != NULL)
2049 bpf_mtap(ic->ic_rawbpf, m0);
2051 if (rt2560_tx_data(sc, m0, ni) != 0) {
2052 ieee80211_free_node(ni);
2058 sc->sc_tx_timer = 5;
2064 rt2560_watchdog(struct ifnet *ifp)
2066 struct rt2560_softc *sc = ifp->if_softc;
2067 struct ieee80211com *ic = &sc->sc_ic;
2071 if (sc->sc_tx_timer > 0) {
2072 if (--sc->sc_tx_timer == 0) {
2073 device_printf(sc->sc_dev, "device timeout\n");
2081 ieee80211_watchdog(ic);
2085 * This function allows for fast channel switching in monitor mode (used by
2086 * net-mgmt/kismet). In IBSS mode, we must explicitly reset the interface to
2087 * generate a new beacon frame.
2090 rt2560_reset(struct ifnet *ifp)
2092 struct rt2560_softc *sc = ifp->if_softc;
2093 struct ieee80211com *ic = &sc->sc_ic;
2095 if (ic->ic_opmode != IEEE80211_M_MONITOR)
2098 rt2560_set_chan(sc, ic->ic_curchan);
2104 rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr)
2106 struct rt2560_softc *sc = ifp->if_softc;
2107 struct ieee80211com *ic = &sc->sc_ic;
2112 if (ifp->if_flags & IFF_UP) {
2113 if (ifp->if_flags & IFF_RUNNING)
2114 rt2560_update_promisc(sc);
2118 if (ifp->if_flags & IFF_RUNNING)
2124 error = ieee80211_ioctl(ic, cmd, data, cr);
2127 if (error == ENETRESET) {
2128 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
2129 (IFF_UP | IFF_RUNNING) &&
2130 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL))
2139 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val)
2144 for (ntries = 0; ntries < 100; ntries++) {
2145 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY))
2149 if (ntries == 100) {
2150 device_printf(sc->sc_dev, "could not write to BBP\n");
2154 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val;
2155 RAL_WRITE(sc, RT2560_BBPCSR, tmp);
2157 DPRINTFN(15, ("BBP R%u <- 0x%02x\n", reg, val));
2161 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg)
2166 val = RT2560_BBP_BUSY | reg << 8;
2167 RAL_WRITE(sc, RT2560_BBPCSR, val);
2169 for (ntries = 0; ntries < 100; ntries++) {
2170 val = RAL_READ(sc, RT2560_BBPCSR);
2171 if (!(val & RT2560_BBP_BUSY))
2176 device_printf(sc->sc_dev, "could not read from BBP\n");
2181 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val)
2186 for (ntries = 0; ntries < 100; ntries++) {
2187 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY))
2191 if (ntries == 100) {
2192 device_printf(sc->sc_dev, "could not write to RF\n");
2196 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 |
2198 RAL_WRITE(sc, RT2560_RFCSR, tmp);
2200 /* remember last written value in sc */
2201 sc->rf_regs[reg] = val;
2203 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff));
2207 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c)
2209 struct ieee80211com *ic = &sc->sc_ic;
2213 chan = ieee80211_chan2ieee(ic, c);
2214 if (chan == 0 || chan == IEEE80211_CHAN_ANY)
2217 if (IEEE80211_IS_CHAN_2GHZ(c))
2218 power = min(sc->txpow[chan - 1], 31);
2222 /* adjust txpower using ifconfig settings */
2223 power -= (100 - ic->ic_txpowlimit) / 8;
2225 DPRINTFN(2, ("setting channel to %u, txpower to %u\n", chan, power));
2227 switch (sc->rf_rev) {
2228 case RT2560_RF_2522:
2229 rt2560_rf_write(sc, RAL_RF1, 0x00814);
2230 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]);
2231 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2234 case RT2560_RF_2523:
2235 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2236 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]);
2237 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044);
2238 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2241 case RT2560_RF_2524:
2242 rt2560_rf_write(sc, RAL_RF1, 0x0c808);
2243 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]);
2244 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2245 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2248 case RT2560_RF_2525:
2249 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2250 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]);
2251 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2252 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2254 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2255 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]);
2256 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2257 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2260 case RT2560_RF_2525E:
2261 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2262 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]);
2263 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2264 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282);
2267 case RT2560_RF_2526:
2268 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]);
2269 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2270 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2272 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]);
2273 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2274 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2278 case RT2560_RF_5222:
2279 for (i = 0; rt2560_rf5222[i].chan != chan; i++);
2281 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1);
2282 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2);
2283 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2284 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4);
2288 if (ic->ic_state != IEEE80211_S_SCAN) {
2289 /* set Japan filter bit for channel 14 */
2290 tmp = rt2560_bbp_read(sc, 70);
2292 tmp &= ~RT2560_JAPAN_FILTER;
2294 tmp |= RT2560_JAPAN_FILTER;
2296 rt2560_bbp_write(sc, 70, tmp);
2298 /* clear CRC errors */
2299 RAL_READ(sc, RT2560_CNT0);
2305 * Disable RF auto-tuning.
2308 rt2560_disable_rf_tune(struct rt2560_softc *sc)
2312 if (sc->rf_rev != RT2560_RF_2523) {
2313 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE;
2314 rt2560_rf_write(sc, RAL_RF1, tmp);
2317 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE;
2318 rt2560_rf_write(sc, RAL_RF3, tmp);
2320 DPRINTFN(2, ("disabling RF autotune\n"));
2325 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF
2329 rt2560_enable_tsf_sync(struct rt2560_softc *sc)
2331 struct ieee80211com *ic = &sc->sc_ic;
2332 uint16_t logcwmin, preload;
2335 /* first, disable TSF synchronization */
2336 RAL_WRITE(sc, RT2560_CSR14, 0);
2338 tmp = 16 * ic->ic_bss->ni_intval;
2339 RAL_WRITE(sc, RT2560_CSR12, tmp);
2341 RAL_WRITE(sc, RT2560_CSR13, 0);
2344 preload = (ic->ic_opmode == IEEE80211_M_STA) ? 384 : 1024;
2345 tmp = logcwmin << 16 | preload;
2346 RAL_WRITE(sc, RT2560_BCNOCSR, tmp);
2348 /* finally, enable TSF synchronization */
2349 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN;
2350 if (ic->ic_opmode == IEEE80211_M_STA)
2351 tmp |= RT2560_ENABLE_TSF_SYNC(1);
2353 tmp |= RT2560_ENABLE_TSF_SYNC(2) |
2354 RT2560_ENABLE_BEACON_GENERATOR;
2355 RAL_WRITE(sc, RT2560_CSR14, tmp);
2357 DPRINTF(("enabling TSF synchronization\n"));
2361 rt2560_update_plcp(struct rt2560_softc *sc)
2363 struct ieee80211com *ic = &sc->sc_ic;
2365 /* no short preamble for 1Mbps */
2366 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400);
2368 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) {
2369 /* values taken from the reference driver */
2370 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401);
2371 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402);
2372 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403);
2374 /* same values as above or'ed 0x8 */
2375 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409);
2376 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a);
2377 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b);
2380 DPRINTF(("updating PLCP for %s preamble\n",
2381 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"));
2385 * This function can be called by ieee80211_set_shortslottime(). Refer to
2386 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed.
2389 rt2560_update_slot(struct ifnet *ifp)
2391 struct rt2560_softc *sc = ifp->if_softc;
2392 struct ieee80211com *ic = &sc->sc_ic;
2394 uint16_t tx_sifs, tx_pifs, tx_difs, eifs;
2397 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
2399 /* update the MAC slot boundaries */
2400 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND;
2401 tx_pifs = tx_sifs + slottime;
2402 tx_difs = tx_sifs + 2 * slottime;
2403 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60;
2405 tmp = RAL_READ(sc, RT2560_CSR11);
2406 tmp = (tmp & ~0x1f00) | slottime << 8;
2407 RAL_WRITE(sc, RT2560_CSR11, tmp);
2409 tmp = tx_pifs << 16 | tx_sifs;
2410 RAL_WRITE(sc, RT2560_CSR18, tmp);
2412 tmp = eifs << 16 | tx_difs;
2413 RAL_WRITE(sc, RT2560_CSR19, tmp);
2415 DPRINTF(("setting slottime to %uus\n", slottime));
2419 rt2560_set_basicrates(struct rt2560_softc *sc)
2421 struct ieee80211com *ic = &sc->sc_ic;
2423 /* update basic rate set */
2424 if (ic->ic_curmode == IEEE80211_MODE_11B) {
2425 /* 11b basic rates: 1, 2Mbps */
2426 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3);
2427 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) {
2428 /* 11a basic rates: 6, 12, 24Mbps */
2429 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150);
2431 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */
2432 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f);
2437 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2)
2441 /* set ON period to 70ms and OFF period to 30ms */
2442 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30;
2443 RAL_WRITE(sc, RT2560_LEDCSR, tmp);
2447 rt2560_set_bssid(struct rt2560_softc *sc, uint8_t *bssid)
2451 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
2452 RAL_WRITE(sc, RT2560_CSR5, tmp);
2454 tmp = bssid[4] | bssid[5] << 8;
2455 RAL_WRITE(sc, RT2560_CSR6, tmp);
2457 DPRINTF(("setting BSSID to %6D\n", bssid, ":"));
2461 rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2465 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
2466 RAL_WRITE(sc, RT2560_CSR3, tmp);
2468 tmp = addr[4] | addr[5] << 8;
2469 RAL_WRITE(sc, RT2560_CSR4, tmp);
2471 DPRINTF(("setting MAC address to %6D\n", addr, ":"));
2475 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2479 tmp = RAL_READ(sc, RT2560_CSR3);
2480 addr[0] = tmp & 0xff;
2481 addr[1] = (tmp >> 8) & 0xff;
2482 addr[2] = (tmp >> 16) & 0xff;
2483 addr[3] = (tmp >> 24);
2485 tmp = RAL_READ(sc, RT2560_CSR4);
2486 addr[4] = tmp & 0xff;
2487 addr[5] = (tmp >> 8) & 0xff;
2491 rt2560_update_promisc(struct rt2560_softc *sc)
2493 struct ifnet *ifp = sc->sc_ic.ic_ifp;
2496 tmp = RAL_READ(sc, RT2560_RXCSR0);
2498 tmp &= ~RT2560_DROP_NOT_TO_ME;
2499 if (!(ifp->if_flags & IFF_PROMISC))
2500 tmp |= RT2560_DROP_NOT_TO_ME;
2502 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2504 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
2505 "entering" : "leaving"));
2509 rt2560_get_rf(int rev)
2512 case RT2560_RF_2522: return "RT2522";
2513 case RT2560_RF_2523: return "RT2523";
2514 case RT2560_RF_2524: return "RT2524";
2515 case RT2560_RF_2525: return "RT2525";
2516 case RT2560_RF_2525E: return "RT2525e";
2517 case RT2560_RF_2526: return "RT2526";
2518 case RT2560_RF_5222: return "RT5222";
2519 default: return "unknown";
2524 rt2560_read_eeprom(struct rt2560_softc *sc)
2529 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0);
2530 sc->rf_rev = (val >> 11) & 0x7;
2531 sc->hw_radio = (val >> 10) & 0x1;
2532 sc->led_mode = (val >> 6) & 0x7;
2533 sc->rx_ant = (val >> 4) & 0x3;
2534 sc->tx_ant = (val >> 2) & 0x3;
2535 sc->nb_ant = val & 0x3;
2537 /* read default values for BBP registers */
2538 for (i = 0; i < 16; i++) {
2539 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i);
2540 sc->bbp_prom[i].reg = val >> 8;
2541 sc->bbp_prom[i].val = val & 0xff;
2544 /* read Tx power for all b/g channels */
2545 for (i = 0; i < 14 / 2; i++) {
2546 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i);
2547 sc->txpow[i * 2] = val >> 8;
2548 sc->txpow[i * 2 + 1] = val & 0xff;
2551 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE);
2552 if ((val & 0xff00) == 0xff00)
2553 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR;
2555 sc->rssi_corr = val >> 8;
2556 DPRINTF(("rssi correction %d, calibrate 0x%02x\n",
2557 sc->rssi_corr, val));
2561 rt2560_bbp_init(struct rt2560_softc *sc)
2563 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2566 /* wait for BBP to be ready */
2567 for (ntries = 0; ntries < 100; ntries++) {
2568 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0)
2572 if (ntries == 100) {
2573 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
2577 rt2560_set_txantenna(sc, sc->tx_ant);
2578 rt2560_set_rxantenna(sc, sc->rx_ant);
2580 /* initialize BBP registers to default values */
2581 for (i = 0; i < N(rt2560_def_bbp); i++) {
2582 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg,
2583 rt2560_def_bbp[i].val);
2586 /* initialize BBP registers to values stored in EEPROM */
2587 for (i = 0; i < 16; i++) {
2588 if (sc->bbp_prom[i].reg == 0xff)
2590 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
2599 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna)
2604 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK;
2606 tx |= RT2560_BBP_ANTA;
2607 else if (antenna == 2)
2608 tx |= RT2560_BBP_ANTB;
2610 tx |= RT2560_BBP_DIVERSITY;
2612 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */
2613 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 ||
2614 sc->rf_rev == RT2560_RF_5222)
2615 tx |= RT2560_BBP_FLIPIQ;
2617 rt2560_bbp_write(sc, RT2560_BBP_TX, tx);
2619 /* update values for CCK and OFDM in BBPCSR1 */
2620 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007;
2621 tmp |= (tx & 0x7) << 16 | (tx & 0x7);
2622 RAL_WRITE(sc, RT2560_BBPCSR1, tmp);
2626 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna)
2630 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK;
2632 rx |= RT2560_BBP_ANTA;
2633 else if (antenna == 2)
2634 rx |= RT2560_BBP_ANTB;
2636 rx |= RT2560_BBP_DIVERSITY;
2638 /* need to force no I/Q flip for RF 2525e and 2526 */
2639 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526)
2640 rx &= ~RT2560_BBP_FLIPIQ;
2642 rt2560_bbp_write(sc, RT2560_BBP_RX, rx);
2646 rt2560_init(void *priv)
2648 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2649 struct rt2560_softc *sc = priv;
2650 struct ieee80211com *ic = &sc->sc_ic;
2651 struct ifnet *ifp = ic->ic_ifp;
2657 /* setup tx rings */
2658 tmp = RT2560_PRIO_RING_COUNT << 24 |
2659 RT2560_ATIM_RING_COUNT << 16 |
2660 RT2560_TX_RING_COUNT << 8 |
2661 RT2560_TX_DESC_SIZE;
2663 /* rings must be initialized in this exact order */
2664 RAL_WRITE(sc, RT2560_TXCSR2, tmp);
2665 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr);
2666 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr);
2667 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr);
2668 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr);
2671 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE;
2673 RAL_WRITE(sc, RT2560_RXCSR1, tmp);
2674 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr);
2676 /* initialize MAC registers to default values */
2677 for (i = 0; i < N(rt2560_def_mac); i++)
2678 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val);
2680 IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp));
2681 rt2560_set_macaddr(sc, ic->ic_myaddr);
2683 /* set basic rate set (will be updated later) */
2684 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153);
2686 rt2560_update_slot(ifp);
2687 rt2560_update_plcp(sc);
2688 rt2560_update_led(sc, 0, 0);
2690 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2691 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY);
2693 if (rt2560_bbp_init(sc) != 0) {
2698 /* set default BSS channel */
2699 rt2560_set_chan(sc, ic->ic_curchan);
2702 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR;
2703 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2704 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR;
2705 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2706 tmp |= RT2560_DROP_TODS;
2707 if (!(ifp->if_flags & IFF_PROMISC))
2708 tmp |= RT2560_DROP_NOT_TO_ME;
2710 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2712 /* clear old FCS and Rx FIFO errors */
2713 RAL_READ(sc, RT2560_CNT0);
2714 RAL_READ(sc, RT2560_CNT4);
2716 /* clear any pending interrupts */
2717 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff);
2719 /* enable interrupts */
2720 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
2722 ifp->if_flags &= ~IFF_OACTIVE;
2723 ifp->if_flags |= IFF_RUNNING;
2726 if (ic->ic_flags & IEEE80211_F_PRIVACY) {
2729 ic->ic_flags &= ~IEEE80211_F_DROPUNENC;
2730 for (i = 0; i < IEEE80211_WEP_NKID; ++i) {
2731 struct ieee80211_key *wk = &ic->ic_nw_keys[i];
2733 if (wk->wk_keylen == 0)
2735 if (wk->wk_flags & IEEE80211_KEY_XMIT)
2736 wk->wk_flags |= IEEE80211_KEY_SWCRYPT;
2740 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2741 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
2742 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
2744 ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
2749 rt2560_stop(void *priv)
2751 struct rt2560_softc *sc = priv;
2752 struct ieee80211com *ic = &sc->sc_ic;
2753 struct ifnet *ifp = ic->ic_ifp;
2755 ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
2757 sc->sc_tx_timer = 0;
2759 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
2762 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX);
2765 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX);
2767 /* reset ASIC (imply reset BBP) */
2768 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2769 RAL_WRITE(sc, RT2560_CSR1, 0);
2771 /* disable interrupts */
2772 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
2774 /* reset Tx and Rx rings */
2775 rt2560_reset_tx_ring(sc, &sc->txq);
2776 rt2560_reset_tx_ring(sc, &sc->atimq);
2777 rt2560_reset_tx_ring(sc, &sc->prioq);
2778 rt2560_reset_tx_ring(sc, &sc->bcnq);
2779 rt2560_reset_rx_ring(sc, &sc->rxq);
2783 rt2560_dma_map_mbuf(void *arg, bus_dma_segment_t *seg, int nseg,
2784 bus_size_t map_size __unused, int error)
2789 KASSERT(nseg == 1, ("too many dma segments\n"));
2790 *((bus_addr_t *)arg) = seg->ds_addr;