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/rt2661.c,v 1.4 2006/03/21 21:15:43 damien Exp $
18 * $DragonFly: src/sys/dev/netif/ral/rt2661.c,v 1.12 2007/02/06 14:40:32 sephe Exp $
22 * Ralink Technology RT2561, RT2561S and RT2661 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>
33 #include <sys/queue.h>
35 #include <sys/socket.h>
36 #include <sys/sockio.h>
37 #include <sys/sysctl.h>
38 #include <sys/serialize.h>
42 #include <net/if_arp.h>
43 #include <net/ethernet.h>
44 #include <net/if_dl.h>
45 #include <net/if_media.h>
46 #include <net/ifq_var.h>
48 #include <netproto/802_11/ieee80211_var.h>
49 #include <netproto/802_11/ieee80211_radiotap.h>
51 #include <dev/netif/ral/if_ralrate.h>
52 #include <dev/netif/ral/rt2661reg.h>
53 #include <dev/netif/ral/rt2661var.h>
54 #include <dev/netif/ral/rt2661_ucode.h>
57 #define DPRINTF(x) do { if (ral_debug > 0) kprintf x; } while (0)
58 #define DPRINTFN(n, x) do { if (ral_debug >= (n)) kprintf x; } while (0)
60 SYSCTL_INT(_debug, OID_AUTO, ral, CTLFLAG_RW, &ral_debug, 0, "ral debug level");
63 #define DPRINTFN(n, x)
66 MALLOC_DEFINE(M_RT2661, "rt2661_ratectl", "rt2661 rate control data");
68 static void rt2661_dma_map_addr(void *, bus_dma_segment_t *, int,
70 static void rt2661_dma_map_mbuf(void *, bus_dma_segment_t *, int,
72 static int rt2661_alloc_tx_ring(struct rt2661_softc *,
73 struct rt2661_tx_ring *, int);
74 static void rt2661_reset_tx_ring(struct rt2661_softc *,
75 struct rt2661_tx_ring *);
76 static void rt2661_free_tx_ring(struct rt2661_softc *,
77 struct rt2661_tx_ring *);
78 static int rt2661_alloc_rx_ring(struct rt2661_softc *,
79 struct rt2661_rx_ring *, int);
80 static void rt2661_reset_rx_ring(struct rt2661_softc *,
81 struct rt2661_rx_ring *);
82 static void rt2661_free_rx_ring(struct rt2661_softc *,
83 struct rt2661_rx_ring *);
84 static struct ieee80211_node *rt2661_node_alloc(
85 struct ieee80211_node_table *);
86 static int rt2661_media_change(struct ifnet *);
87 static void rt2661_next_scan(void *);
88 static int rt2661_newstate(struct ieee80211com *,
89 enum ieee80211_state, int);
90 static uint16_t rt2661_eeprom_read(struct rt2661_softc *, uint8_t);
91 static void rt2661_rx_intr(struct rt2661_softc *);
92 static void rt2661_tx_intr(struct rt2661_softc *);
93 static void rt2661_tx_dma_intr(struct rt2661_softc *,
94 struct rt2661_tx_ring *);
95 static void rt2661_mcu_beacon_expire(struct rt2661_softc *);
96 static void rt2661_mcu_wakeup(struct rt2661_softc *);
97 static void rt2661_mcu_cmd_intr(struct rt2661_softc *);
98 static int rt2661_ack_rate(struct ieee80211com *, int);
99 static uint16_t rt2661_txtime(int, int, uint32_t);
100 static uint8_t rt2661_rxrate(struct rt2661_rx_desc *);
101 static uint8_t rt2661_plcp_signal(int);
102 static void rt2661_setup_tx_desc(struct rt2661_softc *,
103 struct rt2661_tx_desc *, uint32_t, uint16_t, int,
104 int, const bus_dma_segment_t *, int, int, int);
105 static struct mbuf * rt2661_get_rts(struct rt2661_softc *,
106 struct ieee80211_frame *, uint16_t);
107 static int rt2661_tx_data(struct rt2661_softc *, struct mbuf *,
108 struct ieee80211_node *, int);
109 static int rt2661_tx_mgt(struct rt2661_softc *, struct mbuf *,
110 struct ieee80211_node *);
111 static void rt2661_start(struct ifnet *);
112 static void rt2661_watchdog(struct ifnet *);
113 static int rt2661_reset(struct ifnet *);
114 static int rt2661_ioctl(struct ifnet *, u_long, caddr_t,
116 static void rt2661_bbp_write(struct rt2661_softc *, uint8_t,
118 static uint8_t rt2661_bbp_read(struct rt2661_softc *, uint8_t);
119 static void rt2661_rf_write(struct rt2661_softc *, uint8_t,
121 static int rt2661_tx_cmd(struct rt2661_softc *, uint8_t,
123 static void rt2661_select_antenna(struct rt2661_softc *);
124 static void rt2661_enable_mrr(struct rt2661_softc *);
125 static void rt2661_set_txpreamble(struct rt2661_softc *);
126 static void rt2661_set_basicrates(struct rt2661_softc *,
127 const struct ieee80211_rateset *);
128 static void rt2661_select_band(struct rt2661_softc *,
129 struct ieee80211_channel *);
130 static void rt2661_set_chan(struct rt2661_softc *,
131 struct ieee80211_channel *);
132 static void rt2661_set_bssid(struct rt2661_softc *,
134 static void rt2661_set_macaddr(struct rt2661_softc *,
136 static void rt2661_update_promisc(struct rt2661_softc *);
137 static int rt2661_wme_update(struct ieee80211com *) __unused;
138 static void rt2661_update_slot(struct ifnet *);
139 static const char *rt2661_get_rf(int);
140 static void rt2661_read_eeprom(struct rt2661_softc *);
141 static int rt2661_bbp_init(struct rt2661_softc *);
142 static void rt2661_init(void *);
143 static void rt2661_stop(void *);
144 static void rt2661_intr(void *);
145 static int rt2661_load_microcode(struct rt2661_softc *,
146 const uint8_t *, int);
148 static void rt2661_rx_tune(struct rt2661_softc *);
149 static void rt2661_radar_start(struct rt2661_softc *);
150 static int rt2661_radar_stop(struct rt2661_softc *);
152 static int rt2661_prepare_beacon(struct rt2661_softc *);
153 static void rt2661_enable_tsf_sync(struct rt2661_softc *);
154 static int rt2661_get_rssi(struct rt2661_softc *, uint8_t);
155 static void rt2661_led_newstate(struct rt2661_softc *,
156 enum ieee80211_state);
159 * Supported rates for 802.11a/b/g modes (in 500Kbps unit).
161 static const struct ieee80211_rateset rt2661_rateset_11a =
162 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } };
164 static const struct ieee80211_rateset rt2661_rateset_11b =
165 { 4, { 2, 4, 11, 22 } };
167 static const struct ieee80211_rateset rt2661_rateset_11g =
168 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } };
170 static const struct {
173 } rt2661_def_mac[] = {
177 static const struct {
180 } rt2661_def_bbp[] = {
184 static const struct rfprog {
186 uint32_t r1, r2, r3, r4;
187 } rt2661_rf5225_1[] = {
189 }, rt2661_rf5225_2[] = {
193 #define LED_EE2MCU(bit) { \
194 .ee_bit = RT2661_EE_LED_##bit, \
195 .mcu_bit = RT2661_MCU_LED_##bit \
197 static const struct {
212 struct rt2661_dmamap {
213 bus_dma_segment_t segs[RT2661_MAX_SCATTER];
218 rt2661_attach(device_t dev, int id)
220 struct rt2661_softc *sc = device_get_softc(dev);
221 struct ieee80211com *ic = &sc->sc_ic;
222 struct ifnet *ifp = &ic->ic_if;
224 const uint8_t *ucode = NULL;
225 int error, i, ac, ntries, size = 0;
227 callout_init(&sc->scan_ch);
228 callout_init(&sc->rssadapt_ch);
231 sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->sc_irq_rid,
232 RF_ACTIVE | RF_SHAREABLE);
233 if (sc->sc_irq == NULL) {
234 device_printf(dev, "could not allocate interrupt resource\n");
238 /* wait for NIC to initialize */
239 for (ntries = 0; ntries < 1000; ntries++) {
240 if ((val = RAL_READ(sc, RT2661_MAC_CSR0)) != 0)
244 if (ntries == 1000) {
245 device_printf(sc->sc_dev,
246 "timeout waiting for NIC to initialize\n");
251 /* retrieve RF rev. no and various other things from EEPROM */
252 rt2661_read_eeprom(sc);
254 device_printf(dev, "MAC/BBP RT%X, RF %s\n", val,
255 rt2661_get_rf(sc->rf_rev));
258 * Load 8051 microcode into NIC.
262 ucode = rt2561s_ucode;
263 size = sizeof rt2561s_ucode;
266 ucode = rt2561_ucode;
267 size = sizeof rt2561_ucode;
270 ucode = rt2661_ucode;
271 size = sizeof rt2661_ucode;
275 error = rt2661_load_microcode(sc, ucode, size);
277 device_printf(sc->sc_dev, "could not load 8051 microcode\n");
282 * Allocate Tx and Rx rings.
284 for (ac = 0; ac < 4; ac++) {
285 error = rt2661_alloc_tx_ring(sc, &sc->txq[ac],
286 RT2661_TX_RING_COUNT);
288 device_printf(sc->sc_dev,
289 "could not allocate Tx ring %d\n", ac);
294 error = rt2661_alloc_tx_ring(sc, &sc->mgtq, RT2661_MGT_RING_COUNT);
296 device_printf(sc->sc_dev, "could not allocate Mgt ring\n");
300 error = rt2661_alloc_rx_ring(sc, &sc->rxq, RT2661_RX_RING_COUNT);
302 device_printf(sc->sc_dev, "could not allocate Rx ring\n");
306 STAILQ_INIT(&sc->tx_ratectl);
308 sysctl_ctx_init(&sc->sysctl_ctx);
309 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
310 SYSCTL_STATIC_CHILDREN(_hw),
312 device_get_nameunit(dev),
314 if (sc->sysctl_tree == NULL) {
315 device_printf(dev, "could not add sysctl node\n");
321 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
322 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
323 ifp->if_init = rt2661_init;
324 ifp->if_ioctl = rt2661_ioctl;
325 ifp->if_start = rt2661_start;
326 ifp->if_watchdog = rt2661_watchdog;
327 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
328 ifq_set_ready(&ifp->if_snd);
330 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
331 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */
332 ic->ic_state = IEEE80211_S_INIT;
333 rt2661_led_newstate(sc, IEEE80211_S_INIT);
335 /* set device capabilities */
337 IEEE80211_C_IBSS | /* IBSS mode supported */
338 IEEE80211_C_MONITOR | /* monitor mode supported */
339 IEEE80211_C_HOSTAP | /* HostAp mode supported */
340 IEEE80211_C_TXPMGT | /* tx power management */
341 IEEE80211_C_SHPREAMBLE | /* short preamble supported */
342 IEEE80211_C_SHSLOT | /* short slot time supported */
344 IEEE80211_C_WME | /* 802.11e */
346 IEEE80211_C_WEP | /* WEP */
347 IEEE80211_C_WPA; /* 802.11i */
349 if (sc->rf_rev == RT2661_RF_5225 || sc->rf_rev == RT2661_RF_5325) {
350 /* set supported .11a rates */
351 ic->ic_sup_rates[IEEE80211_MODE_11A] = rt2661_rateset_11a;
353 /* set supported .11a channels */
354 for (i = 36; i <= 64; i += 4) {
355 ic->ic_channels[i].ic_freq =
356 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
357 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
359 for (i = 100; i <= 140; i += 4) {
360 ic->ic_channels[i].ic_freq =
361 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
362 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
364 for (i = 149; i <= 165; i += 4) {
365 ic->ic_channels[i].ic_freq =
366 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
367 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
371 /* set supported .11b and .11g rates */
372 ic->ic_sup_rates[IEEE80211_MODE_11B] = rt2661_rateset_11b;
373 ic->ic_sup_rates[IEEE80211_MODE_11G] = rt2661_rateset_11g;
375 /* set supported .11b and .11g channels (1 through 14) */
376 for (i = 1; i <= 14; i++) {
377 ic->ic_channels[i].ic_freq =
378 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
379 ic->ic_channels[i].ic_flags =
380 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM |
381 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ;
384 ieee80211_ifattach(ic);
385 ic->ic_node_alloc = rt2661_node_alloc;
386 /* ic->ic_wme.wme_update = rt2661_wme_update;*/
387 ic->ic_updateslot = rt2661_update_slot;
388 ic->ic_reset = rt2661_reset;
389 /* enable s/w bmiss handling in sta mode */
390 ic->ic_flags_ext |= IEEE80211_FEXT_SWBMISS;
392 /* override state transition machine */
393 sc->sc_newstate = ic->ic_newstate;
394 ic->ic_newstate = rt2661_newstate;
395 ieee80211_media_init(ic, rt2661_media_change, ieee80211_media_status);
397 bpfattach_dlt(ifp, DLT_IEEE802_11_RADIO,
398 sizeof (struct ieee80211_frame) + 64, &sc->sc_drvbpf);
400 sc->sc_rxtap_len = sizeof sc->sc_rxtapu;
401 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
402 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2661_RX_RADIOTAP_PRESENT);
404 sc->sc_txtap_len = sizeof sc->sc_txtapu;
405 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
406 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2661_TX_RADIOTAP_PRESENT);
409 * Add a few sysctl knobs.
413 SYSCTL_ADD_INT(&sc->sysctl_ctx,
414 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "dwell",
415 CTLFLAG_RW, &sc->dwelltime, 0,
416 "channel dwell time (ms) for AP/station scanning");
418 error = bus_setup_intr(dev, sc->sc_irq, INTR_MPSAFE, rt2661_intr,
419 sc, &sc->sc_ih, ifp->if_serializer);
421 device_printf(dev, "could not set up interrupt\n");
423 ieee80211_ifdetach(ic);
428 ieee80211_announce(ic);
436 rt2661_detach(void *xsc)
438 struct rt2661_softc *sc = xsc;
439 struct ieee80211com *ic = &sc->sc_ic;
440 struct ifnet *ifp = &ic->ic_if;
442 if (device_is_attached(sc->sc_dev)) {
443 lwkt_serialize_enter(ifp->if_serializer);
445 callout_stop(&sc->scan_ch);
446 callout_stop(&sc->rssadapt_ch);
448 bus_teardown_intr(sc->sc_dev, sc->sc_irq, sc->sc_ih);
450 lwkt_serialize_exit(ifp->if_serializer);
453 ieee80211_ifdetach(ic);
456 rt2661_free_tx_ring(sc, &sc->txq[0]);
457 rt2661_free_tx_ring(sc, &sc->txq[1]);
458 rt2661_free_tx_ring(sc, &sc->txq[2]);
459 rt2661_free_tx_ring(sc, &sc->txq[3]);
460 rt2661_free_tx_ring(sc, &sc->mgtq);
461 rt2661_free_rx_ring(sc, &sc->rxq);
463 if (sc->sc_irq != NULL) {
464 bus_release_resource(sc->sc_dev, SYS_RES_IRQ, sc->sc_irq_rid,
468 if (sc->sysctl_tree != NULL)
469 sysctl_ctx_free(&sc->sysctl_ctx);
475 rt2661_shutdown(void *xsc)
477 struct rt2661_softc *sc = xsc;
478 struct ifnet *ifp = &sc->sc_ic.ic_if;
480 lwkt_serialize_enter(ifp->if_serializer);
482 lwkt_serialize_exit(ifp->if_serializer);
486 rt2661_suspend(void *xsc)
488 struct rt2661_softc *sc = xsc;
489 struct ifnet *ifp = &sc->sc_ic.ic_if;
491 lwkt_serialize_enter(ifp->if_serializer);
493 lwkt_serialize_exit(ifp->if_serializer);
497 rt2661_resume(void *xsc)
499 struct rt2661_softc *sc = xsc;
500 struct ifnet *ifp = sc->sc_ic.ic_ifp;
502 lwkt_serialize_enter(ifp->if_serializer);
503 if (ifp->if_flags & IFF_UP) {
504 ifp->if_init(ifp->if_softc);
505 if (ifp->if_flags & IFF_RUNNING)
508 lwkt_serialize_exit(ifp->if_serializer);
512 rt2661_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
517 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
519 *(bus_addr_t *)arg = segs[0].ds_addr;
523 rt2661_alloc_tx_ring(struct rt2661_softc *sc, struct rt2661_tx_ring *ring,
530 ring->cur = ring->next = 0;
532 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
533 BUS_SPACE_MAXADDR, NULL, NULL, count * RT2661_TX_DESC_SIZE, 1,
534 count * RT2661_TX_DESC_SIZE, 0, &ring->desc_dmat);
536 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
540 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
541 BUS_DMA_WAITOK | BUS_DMA_ZERO, &ring->desc_map);
543 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
547 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
548 count * RT2661_TX_DESC_SIZE, rt2661_dma_map_addr, &ring->physaddr,
551 device_printf(sc->sc_dev, "could not load desc DMA map\n");
553 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
558 ring->data = kmalloc(count * sizeof (struct rt2661_data), M_DEVBUF,
561 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
562 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES * RT2661_MAX_SCATTER,
563 RT2661_MAX_SCATTER, MCLBYTES, 0, &ring->data_dmat);
565 device_printf(sc->sc_dev, "could not create data DMA tag\n");
569 for (i = 0; i < count; i++) {
570 error = bus_dmamap_create(ring->data_dmat, 0,
573 device_printf(sc->sc_dev, "could not create DMA map\n");
579 fail: rt2661_free_tx_ring(sc, ring);
584 rt2661_reset_tx_ring(struct rt2661_softc *sc, struct rt2661_tx_ring *ring)
586 struct rt2661_tx_desc *desc;
587 struct rt2661_data *data;
590 for (i = 0; i < ring->count; i++) {
591 desc = &ring->desc[i];
592 data = &ring->data[i];
594 if (data->m != NULL) {
595 bus_dmamap_sync(ring->data_dmat, data->map,
596 BUS_DMASYNC_POSTWRITE);
597 bus_dmamap_unload(ring->data_dmat, data->map);
605 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
608 ring->cur = ring->next = 0;
612 rt2661_free_tx_ring(struct rt2661_softc *sc, struct rt2661_tx_ring *ring)
614 struct rt2661_data *data;
617 if (ring->desc != NULL) {
618 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
619 BUS_DMASYNC_POSTWRITE);
620 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
621 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
625 if (ring->desc_dmat != NULL) {
626 bus_dma_tag_destroy(ring->desc_dmat);
627 ring->desc_dmat = NULL;
630 if (ring->data != NULL) {
631 for (i = 0; i < ring->count; i++) {
632 data = &ring->data[i];
634 if (data->m != NULL) {
635 bus_dmamap_sync(ring->data_dmat, data->map,
636 BUS_DMASYNC_POSTWRITE);
637 bus_dmamap_unload(ring->data_dmat, data->map);
642 if (data->map != NULL) {
643 bus_dmamap_destroy(ring->data_dmat, data->map);
648 kfree(ring->data, M_DEVBUF);
652 if (ring->data_dmat != NULL) {
653 bus_dma_tag_destroy(ring->data_dmat);
654 ring->data_dmat = NULL;
659 rt2661_alloc_rx_ring(struct rt2661_softc *sc, struct rt2661_rx_ring *ring,
662 struct rt2661_rx_desc *desc;
663 struct rt2661_data *data;
668 ring->cur = ring->next = 0;
670 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
671 BUS_SPACE_MAXADDR, NULL, NULL, count * RT2661_RX_DESC_SIZE, 1,
672 count * RT2661_RX_DESC_SIZE, 0, &ring->desc_dmat);
674 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
678 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
679 BUS_DMA_WAITOK | BUS_DMA_ZERO, &ring->desc_map);
681 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
685 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
686 count * RT2661_RX_DESC_SIZE, rt2661_dma_map_addr, &ring->physaddr,
689 device_printf(sc->sc_dev, "could not load desc DMA map\n");
691 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
696 ring->data = kmalloc(count * sizeof (struct rt2661_data), M_DEVBUF,
700 * Pre-allocate Rx buffers and populate Rx ring.
702 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
703 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0,
706 device_printf(sc->sc_dev, "could not create data DMA tag\n");
710 for (i = 0; i < count; i++) {
711 desc = &sc->rxq.desc[i];
712 data = &sc->rxq.data[i];
714 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
716 device_printf(sc->sc_dev, "could not create DMA map\n");
720 data->m = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
721 if (data->m == NULL) {
722 device_printf(sc->sc_dev,
723 "could not allocate rx mbuf\n");
728 error = bus_dmamap_load(ring->data_dmat, data->map,
729 mtod(data->m, void *), MCLBYTES, rt2661_dma_map_addr,
732 device_printf(sc->sc_dev,
733 "could not load rx buf DMA map");
740 desc->flags = htole32(RT2661_RX_BUSY);
741 desc->physaddr = htole32(physaddr);
744 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
748 fail: rt2661_free_rx_ring(sc, ring);
753 rt2661_reset_rx_ring(struct rt2661_softc *sc, struct rt2661_rx_ring *ring)
757 for (i = 0; i < ring->count; i++)
758 ring->desc[i].flags = htole32(RT2661_RX_BUSY);
760 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
762 ring->cur = ring->next = 0;
766 rt2661_free_rx_ring(struct rt2661_softc *sc, struct rt2661_rx_ring *ring)
768 struct rt2661_data *data;
771 if (ring->desc != NULL) {
772 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
773 BUS_DMASYNC_POSTWRITE);
774 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
775 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
779 if (ring->desc_dmat != NULL) {
780 bus_dma_tag_destroy(ring->desc_dmat);
781 ring->desc_dmat = NULL;
784 if (ring->data != NULL) {
785 for (i = 0; i < ring->count; i++) {
786 data = &ring->data[i];
788 if (data->m != NULL) {
789 bus_dmamap_sync(ring->data_dmat, data->map,
790 BUS_DMASYNC_POSTREAD);
791 bus_dmamap_unload(ring->data_dmat, data->map);
796 if (data->map != NULL) {
797 bus_dmamap_destroy(ring->data_dmat, data->map);
802 kfree(ring->data, M_DEVBUF);
806 if (ring->data_dmat != NULL) {
807 bus_dma_tag_destroy(ring->data_dmat);
808 ring->data_dmat = NULL;
812 static struct ieee80211_node *
813 rt2661_node_alloc(struct ieee80211_node_table *nt)
815 struct rt2661_node *rn;
817 rn = kmalloc(sizeof (struct rt2661_node), M_80211_NODE,
820 return (rn != NULL) ? &rn->ni : NULL;
824 rt2661_media_change(struct ifnet *ifp)
826 struct rt2661_softc *sc = ifp->if_softc;
829 error = ieee80211_media_change(ifp);
830 if (error != ENETRESET)
833 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING))
839 * This function is called periodically (every 200ms) during scanning to
840 * switch from one channel to another.
843 rt2661_next_scan(void *arg)
845 struct rt2661_softc *sc = arg;
846 struct ieee80211com *ic = &sc->sc_ic;
847 struct ifnet *ifp = &ic->ic_if;
849 lwkt_serialize_enter(ifp->if_serializer);
850 if (ic->ic_state == IEEE80211_S_SCAN)
851 ieee80211_next_scan(ic);
852 lwkt_serialize_exit(ifp->if_serializer);
856 * This function is called for each node present in the node station table.
859 rt2661_iter_func(void *arg, struct ieee80211_node *ni)
861 struct rt2661_node *rn = (struct rt2661_node *)ni;
863 ral_rssadapt_updatestats(&rn->rssadapt);
867 * This function is called periodically (every 100ms) in RUN state to update
868 * the rate adaptation statistics.
871 rt2661_update_rssadapt(void *arg)
873 struct rt2661_softc *sc = arg;
874 struct ieee80211com *ic = &sc->sc_ic;
875 struct ifnet *ifp = &ic->ic_if;
877 lwkt_serialize_enter(ifp->if_serializer);
879 ieee80211_iterate_nodes(&ic->ic_sta, rt2661_iter_func, arg);
880 callout_reset(&sc->rssadapt_ch, hz / 10, rt2661_update_rssadapt, sc);
882 lwkt_serialize_exit(ifp->if_serializer);
886 rt2661_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
888 struct rt2661_softc *sc = ic->ic_ifp->if_softc;
889 enum ieee80211_state ostate;
890 struct ieee80211_node *ni;
894 ostate = ic->ic_state;
895 callout_stop(&sc->scan_ch);
897 if (ostate != nstate)
898 rt2661_led_newstate(sc, nstate);
901 case IEEE80211_S_INIT:
902 callout_stop(&sc->rssadapt_ch);
904 if (ostate == IEEE80211_S_RUN) {
905 /* abort TSF synchronization */
906 tmp = RAL_READ(sc, RT2661_TXRX_CSR9);
907 RAL_WRITE(sc, RT2661_TXRX_CSR9, tmp & ~0x00ffffff);
911 case IEEE80211_S_SCAN:
912 rt2661_set_chan(sc, ic->ic_curchan);
913 callout_reset(&sc->scan_ch, (sc->dwelltime * hz) / 1000,
914 rt2661_next_scan, sc);
917 case IEEE80211_S_AUTH:
918 case IEEE80211_S_ASSOC:
919 rt2661_set_chan(sc, ic->ic_curchan);
922 case IEEE80211_S_RUN:
923 rt2661_set_chan(sc, ic->ic_curchan);
927 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
928 rt2661_enable_mrr(sc);
929 rt2661_set_txpreamble(sc);
930 rt2661_set_basicrates(sc, &ni->ni_rates);
931 rt2661_set_bssid(sc, ni->ni_bssid);
934 if (ic->ic_opmode == IEEE80211_M_HOSTAP ||
935 ic->ic_opmode == IEEE80211_M_IBSS) {
936 if ((error = rt2661_prepare_beacon(sc)) != 0)
940 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
941 callout_reset(&sc->rssadapt_ch, hz / 10,
942 rt2661_update_rssadapt, sc);
943 rt2661_enable_tsf_sync(sc);
948 return (error != 0) ? error : sc->sc_newstate(ic, nstate, arg);
952 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or
956 rt2661_eeprom_read(struct rt2661_softc *sc, uint8_t addr)
962 /* clock C once before the first command */
963 RT2661_EEPROM_CTL(sc, 0);
965 RT2661_EEPROM_CTL(sc, RT2661_S);
966 RT2661_EEPROM_CTL(sc, RT2661_S | RT2661_C);
967 RT2661_EEPROM_CTL(sc, RT2661_S);
969 /* write start bit (1) */
970 RT2661_EEPROM_CTL(sc, RT2661_S | RT2661_D);
971 RT2661_EEPROM_CTL(sc, RT2661_S | RT2661_D | RT2661_C);
973 /* write READ opcode (10) */
974 RT2661_EEPROM_CTL(sc, RT2661_S | RT2661_D);
975 RT2661_EEPROM_CTL(sc, RT2661_S | RT2661_D | RT2661_C);
976 RT2661_EEPROM_CTL(sc, RT2661_S);
977 RT2661_EEPROM_CTL(sc, RT2661_S | RT2661_C);
979 /* write address (A5-A0 or A7-A0) */
980 n = (RAL_READ(sc, RT2661_E2PROM_CSR) & RT2661_93C46) ? 5 : 7;
981 for (; n >= 0; n--) {
982 RT2661_EEPROM_CTL(sc, RT2661_S |
983 (((addr >> n) & 1) << RT2661_SHIFT_D));
984 RT2661_EEPROM_CTL(sc, RT2661_S |
985 (((addr >> n) & 1) << RT2661_SHIFT_D) | RT2661_C);
988 RT2661_EEPROM_CTL(sc, RT2661_S);
990 /* read data Q15-Q0 */
992 for (n = 15; n >= 0; n--) {
993 RT2661_EEPROM_CTL(sc, RT2661_S | RT2661_C);
994 tmp = RAL_READ(sc, RT2661_E2PROM_CSR);
995 val |= ((tmp & RT2661_Q) >> RT2661_SHIFT_Q) << n;
996 RT2661_EEPROM_CTL(sc, RT2661_S);
999 RT2661_EEPROM_CTL(sc, 0);
1001 /* clear Chip Select and clock C */
1002 RT2661_EEPROM_CTL(sc, RT2661_S);
1003 RT2661_EEPROM_CTL(sc, 0);
1004 RT2661_EEPROM_CTL(sc, RT2661_C);
1010 rt2661_tx_intr(struct rt2661_softc *sc)
1012 struct ieee80211com *ic = &sc->sc_ic;
1013 struct ifnet *ifp = ic->ic_ifp;
1014 struct rt2661_tx_ratectl *rctl;
1015 struct rt2661_node *rn;
1016 uint32_t val, result;
1020 val = RAL_READ(sc, RT2661_STA_CSR4);
1021 if (!(val & RT2661_TX_STAT_VALID))
1024 /* Gather statistics */
1025 result = RT2661_TX_RESULT(val);
1026 if (result == RT2661_TX_SUCCESS)
1031 /* No rate control */
1032 if (RT2661_TX_QID(val) == 0)
1035 /* retrieve rate control algorithm context */
1036 rctl = STAILQ_FIRST(&sc->tx_ratectl);
1040 * This really should not happen. Maybe we should
1041 * use assertion here? But why should we rely on
1042 * hardware to do the correct things? Even the
1043 * reference driver (RT61?) provided by Ralink does
1044 * not provide enough clue that this kind of interrupt
1045 * is promised to be generated for each packet. So
1046 * just print a message and keep going ...
1048 if_printf(ifp, "WARNING: no rate control information\n");
1051 STAILQ_REMOVE_HEAD(&sc->tx_ratectl, link);
1053 rn = (struct rt2661_node *)rctl->ni;
1056 case RT2661_TX_SUCCESS:
1057 retrycnt = RT2661_TX_RETRYCNT(val);
1059 DPRINTFN(10, ("data frame sent successfully after "
1060 "%d retries\n", retrycnt));
1061 if (retrycnt == 0 && rctl->id.id_node != NULL) {
1062 ral_rssadapt_raise_rate(ic, &rn->rssadapt,
1067 case RT2661_TX_RETRY_FAIL:
1068 DPRINTFN(9, ("sending data frame failed (too much "
1070 if (rctl->id.id_node != NULL) {
1071 ral_rssadapt_lower_rate(ic, rctl->ni,
1072 &rn->rssadapt, &rctl->id);
1078 device_printf(sc->sc_dev,
1079 "sending data frame failed 0x%08x\n", val);
1083 ieee80211_free_node(rctl->ni);
1085 kfree(rctl, M_RT2661);
1090 rt2661_tx_dma_intr(struct rt2661_softc *sc, struct rt2661_tx_ring *txq)
1092 struct rt2661_tx_desc *desc;
1093 struct rt2661_data *data;
1095 bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_POSTREAD);
1098 desc = &txq->desc[txq->next];
1099 data = &txq->data[txq->next];
1101 if ((le32toh(desc->flags) & RT2661_TX_BUSY) ||
1102 !(le32toh(desc->flags) & RT2661_TX_VALID))
1105 bus_dmamap_sync(txq->data_dmat, data->map,
1106 BUS_DMASYNC_POSTWRITE);
1107 bus_dmamap_unload(txq->data_dmat, data->map);
1111 /* descriptor is no longer valid */
1112 desc->flags &= ~htole32(RT2661_TX_VALID);
1114 DPRINTFN(15, ("tx dma done q=%p idx=%u\n", txq, txq->next));
1117 if (++txq->next >= txq->count) /* faster than % count */
1121 bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE);
1123 if (txq->queued < txq->count) {
1124 struct ifnet *ifp = &sc->sc_ic.ic_if;
1126 sc->sc_tx_timer = 0;
1127 ifp->if_flags &= ~IFF_OACTIVE;
1133 rt2661_rx_intr(struct rt2661_softc *sc)
1135 struct ieee80211com *ic = &sc->sc_ic;
1136 struct ifnet *ifp = ic->ic_ifp;
1137 struct rt2661_rx_desc *desc;
1138 struct rt2661_data *data;
1139 bus_addr_t physaddr;
1140 struct ieee80211_frame *wh;
1141 struct ieee80211_node *ni;
1142 struct rt2661_node *rn;
1143 struct mbuf *mnew, *m;
1146 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1147 BUS_DMASYNC_POSTREAD);
1152 desc = &sc->rxq.desc[sc->rxq.cur];
1153 data = &sc->rxq.data[sc->rxq.cur];
1155 if (le32toh(desc->flags) & RT2661_RX_BUSY)
1158 if ((le32toh(desc->flags) & RT2661_RX_PHY_ERROR) ||
1159 (le32toh(desc->flags) & RT2661_RX_CRC_ERROR)) {
1161 * This should not happen since we did not request
1162 * to receive those frames when we filled TXRX_CSR0.
1164 DPRINTFN(5, ("PHY or CRC error flags 0x%08x\n",
1165 le32toh(desc->flags)));
1170 if ((le32toh(desc->flags) & RT2661_RX_CIPHER_MASK) != 0) {
1176 * Try to allocate a new mbuf for this ring element and load it
1177 * before processing the current mbuf. If the ring element
1178 * cannot be loaded, drop the received packet and reuse the old
1179 * mbuf. In the unlikely case that the old mbuf can't be
1180 * reloaded either, explicitly panic.
1182 mnew = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
1188 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1189 BUS_DMASYNC_POSTREAD);
1190 bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1192 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1193 mtod(mnew, void *), MCLBYTES, rt2661_dma_map_addr,
1198 /* try to reload the old mbuf */
1199 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1200 mtod(data->m, void *), MCLBYTES,
1201 rt2661_dma_map_addr, &physaddr, 0);
1203 /* very unlikely that it will fail... */
1204 panic("%s: could not load old rx mbuf",
1205 device_get_name(sc->sc_dev));
1212 * New mbuf successfully loaded, update Rx ring and continue
1217 desc->physaddr = htole32(physaddr);
1220 m->m_pkthdr.rcvif = ifp;
1221 m->m_pkthdr.len = m->m_len =
1222 (le32toh(desc->flags) >> 16) & 0xfff;
1224 rssi = rt2661_get_rssi(sc, desc->rssi);
1226 if (sc->sc_drvbpf != NULL) {
1227 struct rt2661_rx_radiotap_header *tap = &sc->sc_rxtap;
1228 uint32_t tsf_lo, tsf_hi;
1230 /* get timestamp (low and high 32 bits) */
1231 tsf_hi = RAL_READ(sc, RT2661_TXRX_CSR13);
1232 tsf_lo = RAL_READ(sc, RT2661_TXRX_CSR12);
1235 htole64(((uint64_t)tsf_hi << 32) | tsf_lo);
1237 tap->wr_rate = rt2661_rxrate(desc);
1238 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
1239 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
1240 tap->wr_antsignal = rssi;
1242 bpf_ptap(sc->sc_drvbpf, m, tap, sc->sc_rxtap_len);
1245 wh = mtod(m, struct ieee80211_frame *);
1246 ni = ieee80211_find_rxnode(ic,
1247 (struct ieee80211_frame_min *)wh);
1249 /* send the frame to the 802.11 layer */
1250 ieee80211_input(ic, m, ni, rssi, 0);
1252 /* give rssi to the rate adatation algorithm */
1253 rn = (struct rt2661_node *)ni;
1254 ral_rssadapt_input(ic, ni, &rn->rssadapt, rssi);
1256 /* node is no longer needed */
1257 ieee80211_free_node(ni);
1259 skip: desc->flags |= htole32(RT2661_RX_BUSY);
1261 DPRINTFN(15, ("rx intr idx=%u\n", sc->rxq.cur));
1263 sc->rxq.cur = (sc->rxq.cur + 1) % RT2661_RX_RING_COUNT;
1266 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1267 BUS_DMASYNC_PREWRITE);
1272 rt2661_mcu_beacon_expire(struct rt2661_softc *sc)
1278 rt2661_mcu_wakeup(struct rt2661_softc *sc)
1280 RAL_WRITE(sc, RT2661_MAC_CSR11, 5 << 16);
1282 RAL_WRITE(sc, RT2661_SOFT_RESET_CSR, 0x7);
1283 RAL_WRITE(sc, RT2661_IO_CNTL_CSR, 0x18);
1284 RAL_WRITE(sc, RT2661_PCI_USEC_CSR, 0x20);
1286 /* send wakeup command to MCU */
1287 rt2661_tx_cmd(sc, RT2661_MCU_CMD_WAKEUP, 0);
1291 rt2661_mcu_cmd_intr(struct rt2661_softc *sc)
1293 RAL_READ(sc, RT2661_M2H_CMD_DONE_CSR);
1294 RAL_WRITE(sc, RT2661_M2H_CMD_DONE_CSR, 0xffffffff);
1298 rt2661_intr(void *arg)
1300 struct rt2661_softc *sc = arg;
1301 struct ifnet *ifp = &sc->sc_ic.ic_if;
1304 /* disable MAC and MCU interrupts */
1305 RAL_WRITE(sc, RT2661_INT_MASK_CSR, 0xffffff7f);
1306 RAL_WRITE(sc, RT2661_MCU_INT_MASK_CSR, 0xffffffff);
1308 /* don't re-enable interrupts if we're shutting down */
1309 if (!(ifp->if_flags & IFF_RUNNING))
1312 r1 = RAL_READ(sc, RT2661_INT_SOURCE_CSR);
1313 RAL_WRITE(sc, RT2661_INT_SOURCE_CSR, r1);
1315 r2 = RAL_READ(sc, RT2661_MCU_INT_SOURCE_CSR);
1316 RAL_WRITE(sc, RT2661_MCU_INT_SOURCE_CSR, r2);
1318 if (r1 & RT2661_MGT_DONE)
1319 rt2661_tx_dma_intr(sc, &sc->mgtq);
1321 if (r1 & RT2661_RX_DONE)
1324 if (r1 & RT2661_TX0_DMA_DONE)
1325 rt2661_tx_dma_intr(sc, &sc->txq[0]);
1327 if (r1 & RT2661_TX1_DMA_DONE)
1328 rt2661_tx_dma_intr(sc, &sc->txq[1]);
1330 if (r1 & RT2661_TX2_DMA_DONE)
1331 rt2661_tx_dma_intr(sc, &sc->txq[2]);
1333 if (r1 & RT2661_TX3_DMA_DONE)
1334 rt2661_tx_dma_intr(sc, &sc->txq[3]);
1336 if (r1 & RT2661_TX_DONE)
1339 if (r2 & RT2661_MCU_CMD_DONE)
1340 rt2661_mcu_cmd_intr(sc);
1342 if (r2 & RT2661_MCU_BEACON_EXPIRE)
1343 rt2661_mcu_beacon_expire(sc);
1345 if (r2 & RT2661_MCU_WAKEUP)
1346 rt2661_mcu_wakeup(sc);
1348 /* re-enable MAC and MCU interrupts */
1349 RAL_WRITE(sc, RT2661_INT_MASK_CSR, 0x0000ff10);
1350 RAL_WRITE(sc, RT2661_MCU_INT_MASK_CSR, 0);
1353 /* quickly determine if a given rate is CCK or OFDM */
1354 #define RAL_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
1356 #define RAL_ACK_SIZE 14 /* 10 + 4(FCS) */
1357 #define RAL_CTS_SIZE 14 /* 10 + 4(FCS) */
1359 #define RAL_SIFS 10 /* us */
1362 * This function is only used by the Rx radiotap code. It returns the rate at
1363 * which a given frame was received.
1366 rt2661_rxrate(struct rt2661_rx_desc *desc)
1368 if (le32toh(desc->flags) & RT2661_RX_OFDM) {
1369 /* reverse function of rt2661_plcp_signal */
1370 switch (desc->rate & 0xf) {
1371 case 0xb: return 12;
1372 case 0xf: return 18;
1373 case 0xa: return 24;
1374 case 0xe: return 36;
1375 case 0x9: return 48;
1376 case 0xd: return 72;
1377 case 0x8: return 96;
1378 case 0xc: return 108;
1381 if (desc->rate == 10)
1383 if (desc->rate == 20)
1385 if (desc->rate == 55)
1387 if (desc->rate == 110)
1390 return 2; /* should not get there */
1394 * Return the expected ack rate for a frame transmitted at rate `rate'.
1395 * XXX: this should depend on the destination node basic rate set.
1398 rt2661_ack_rate(struct ieee80211com *ic, int rate)
1407 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate;
1423 /* default to 1Mbps */
1428 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'.
1429 * The function automatically determines the operating mode depending on the
1430 * given rate. `flags' indicates whether short preamble is in use or not.
1433 rt2661_txtime(int len, int rate, uint32_t flags)
1437 if (RAL_RATE_IS_OFDM(rate)) {
1438 /* IEEE Std 802.11a-1999, pp. 37 */
1439 txtime = (8 + 4 * len + 3 + rate - 1) / rate;
1440 txtime = 16 + 4 + 4 * txtime + 6;
1442 /* IEEE Std 802.11b-1999, pp. 28 */
1443 txtime = (16 * len + rate - 1) / rate;
1444 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE))
1454 rt2661_plcp_signal(int rate)
1457 /* CCK rates (returned values are device-dependent) */
1460 case 11: return 0x2;
1461 case 22: return 0x3;
1463 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1464 case 12: return 0xb;
1465 case 18: return 0xf;
1466 case 24: return 0xa;
1467 case 36: return 0xe;
1468 case 48: return 0x9;
1469 case 72: return 0xd;
1470 case 96: return 0x8;
1471 case 108: return 0xc;
1473 /* unsupported rates (should not get there) */
1474 default: return 0xff;
1479 rt2661_setup_tx_desc(struct rt2661_softc *sc, struct rt2661_tx_desc *desc,
1480 uint32_t flags, uint16_t xflags, int len, int rate,
1481 const bus_dma_segment_t *segs, int nsegs, int ac, int ratectl)
1483 struct ieee80211com *ic = &sc->sc_ic;
1484 uint16_t plcp_length;
1487 desc->flags = htole32(flags);
1488 desc->flags |= htole32(len << 16);
1489 desc->flags |= htole32(RT2661_TX_VALID);
1491 desc->xflags = htole16(xflags);
1492 desc->xflags |= htole16(nsegs << 13);
1494 desc->wme = htole16(
1497 RT2661_LOGCWMIN(4) |
1498 RT2661_LOGCWMAX(10));
1501 * Remember whether TX rate control information should be gathered.
1502 * This field is driver private data only. It will be made available
1503 * by the NIC in STA_CSR4 on Tx done interrupts.
1505 desc->qid = ratectl;
1507 /* setup PLCP fields */
1508 desc->plcp_signal = rt2661_plcp_signal(rate);
1509 desc->plcp_service = 4;
1511 len += IEEE80211_CRC_LEN;
1512 if (RAL_RATE_IS_OFDM(rate)) {
1513 desc->flags |= htole32(RT2661_TX_OFDM);
1515 plcp_length = len & 0xfff;
1516 desc->plcp_length_hi = plcp_length >> 6;
1517 desc->plcp_length_lo = plcp_length & 0x3f;
1519 plcp_length = (16 * len + rate - 1) / rate;
1521 remainder = (16 * len) % 22;
1522 if (remainder != 0 && remainder < 7)
1523 desc->plcp_service |= RT2661_PLCP_LENGEXT;
1525 desc->plcp_length_hi = plcp_length >> 8;
1526 desc->plcp_length_lo = plcp_length & 0xff;
1528 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1529 desc->plcp_signal |= 0x08;
1532 /* RT2x61 supports scatter with up to 5 segments */
1533 for (i = 0; i < nsegs; i++) {
1534 desc->addr[i] = htole32(segs[i].ds_addr);
1535 desc->len [i] = htole16(segs[i].ds_len);
1538 desc->flags |= htole32(RT2661_TX_BUSY);
1542 rt2661_tx_mgt(struct rt2661_softc *sc, struct mbuf *m0,
1543 struct ieee80211_node *ni)
1545 struct ieee80211com *ic = &sc->sc_ic;
1546 struct rt2661_tx_desc *desc;
1547 struct rt2661_data *data;
1548 struct ieee80211_frame *wh;
1549 struct rt2661_dmamap map;
1551 uint32_t flags = 0; /* XXX HWSEQ */
1554 desc = &sc->mgtq.desc[sc->mgtq.cur];
1555 data = &sc->mgtq.data[sc->mgtq.cur];
1557 /* send mgt frames at the lowest available rate */
1558 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1560 error = bus_dmamap_load_mbuf(sc->mgtq.data_dmat, data->map, m0,
1561 rt2661_dma_map_mbuf, &map, 0);
1563 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1569 if (sc->sc_drvbpf != NULL) {
1570 struct rt2661_tx_radiotap_header *tap = &sc->sc_txtap;
1573 tap->wt_rate = rate;
1574 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1575 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1577 bpf_ptap(sc->sc_drvbpf, m0, tap, sc->sc_txtap_len);
1582 wh = mtod(m0, struct ieee80211_frame *);
1584 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1585 flags |= RT2661_TX_NEED_ACK;
1587 dur = rt2661_txtime(RAL_ACK_SIZE, rate, ic->ic_flags) +
1589 *(uint16_t *)wh->i_dur = htole16(dur);
1591 /* tell hardware to add timestamp in probe responses */
1593 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) ==
1594 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP))
1595 flags |= RT2661_TX_TIMESTAMP;
1598 rt2661_setup_tx_desc(sc, desc, flags, 0 /* XXX HWSEQ */,
1599 m0->m_pkthdr.len, rate, map.segs, map.nseg, RT2661_QID_MGT, 0);
1601 bus_dmamap_sync(sc->mgtq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1602 bus_dmamap_sync(sc->mgtq.desc_dmat, sc->mgtq.desc_map,
1603 BUS_DMASYNC_PREWRITE);
1605 DPRINTFN(10, ("sending mgt frame len=%u idx=%u rate=%u\n",
1606 m0->m_pkthdr.len, sc->mgtq.cur, rate));
1610 sc->mgtq.cur = (sc->mgtq.cur + 1) % RT2661_MGT_RING_COUNT;
1611 RAL_WRITE(sc, RT2661_TX_CNTL_CSR, RT2661_KICK_MGT);
1613 ieee80211_free_node(ni);
1619 * Build a RTS control frame.
1621 static struct mbuf *
1622 rt2661_get_rts(struct rt2661_softc *sc, struct ieee80211_frame *wh,
1625 struct ieee80211_frame_rts *rts;
1628 MGETHDR(m, MB_DONTWAIT, MT_DATA);
1630 sc->sc_ic.ic_stats.is_tx_nobuf++;
1631 device_printf(sc->sc_dev, "could not allocate RTS frame\n");
1635 rts = mtod(m, struct ieee80211_frame_rts *);
1637 rts->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_CTL |
1638 IEEE80211_FC0_SUBTYPE_RTS;
1639 rts->i_fc[1] = IEEE80211_FC1_DIR_NODS;
1640 *(uint16_t *)rts->i_dur = htole16(dur);
1641 IEEE80211_ADDR_COPY(rts->i_ra, wh->i_addr1);
1642 IEEE80211_ADDR_COPY(rts->i_ta, wh->i_addr2);
1644 m->m_pkthdr.len = m->m_len = sizeof (struct ieee80211_frame_rts);
1650 rt2661_tx_data(struct rt2661_softc *sc, struct mbuf *m0,
1651 struct ieee80211_node *ni, int ac)
1653 struct ieee80211com *ic = &sc->sc_ic;
1654 struct rt2661_tx_ring *txq = &sc->txq[ac];
1655 struct rt2661_tx_desc *desc;
1656 struct rt2661_data *data;
1657 struct rt2661_tx_ratectl *rctl;
1658 struct rt2661_node *rn;
1659 struct ieee80211_rateset *rs;
1660 struct ieee80211_frame *wh;
1661 struct ieee80211_key *k;
1662 const struct chanAccParams *cap;
1664 struct rt2661_dmamap map;
1667 int error, rate, noack = 0;
1669 wh = mtod(m0, struct ieee80211_frame *);
1671 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
1672 rs = &ic->ic_sup_rates[ic->ic_curmode];
1673 rate = rs->rs_rates[ic->ic_fixed_rate];
1676 rn = (struct rt2661_node *)ni;
1677 ni->ni_txrate = ral_rssadapt_choose(&rn->rssadapt, rs,
1678 wh, m0->m_pkthdr.len, NULL, 0);
1679 rate = rs->rs_rates[ni->ni_txrate];
1681 rate &= IEEE80211_RATE_VAL;
1683 if (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_QOS) {
1684 cap = &ic->ic_wme.wme_chanParams;
1685 noack = cap->cap_wmeParams[ac].wmep_noackPolicy;
1688 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1689 k = ieee80211_crypto_encap(ic, ni, m0);
1695 /* packet header may have moved, reset our local pointer */
1696 wh = mtod(m0, struct ieee80211_frame *);
1700 * IEEE Std 802.11-1999, pp 82: "A STA shall use an RTS/CTS exchange
1701 * for directed frames only when the length of the MPDU is greater
1702 * than the length threshold indicated by [...]" ic_rtsthreshold.
1704 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) &&
1705 m0->m_pkthdr.len > ic->ic_rtsthreshold) {
1708 int rtsrate, ackrate;
1710 rtsrate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1711 ackrate = rt2661_ack_rate(ic, rate);
1713 dur = rt2661_txtime(m0->m_pkthdr.len + 4, rate, ic->ic_flags) +
1714 rt2661_txtime(RAL_CTS_SIZE, rtsrate, ic->ic_flags) +
1715 /* XXX: noack (QoS)? */
1716 rt2661_txtime(RAL_ACK_SIZE, ackrate, ic->ic_flags) +
1719 m = rt2661_get_rts(sc, wh, dur);
1721 desc = &txq->desc[txq->cur];
1722 data = &txq->data[txq->cur];
1724 error = bus_dmamap_load_mbuf(txq->data_dmat, data->map, m,
1725 rt2661_dma_map_mbuf, &map, 0);
1727 device_printf(sc->sc_dev,
1728 "could not map mbuf (error %d)\n", error);
1736 rt2661_setup_tx_desc(sc, desc, RT2661_TX_NEED_ACK |
1737 RT2661_TX_MORE_FRAG, 0, m->m_pkthdr.len,
1738 rtsrate, map.segs, map.nseg, ac, 0);
1740 bus_dmamap_sync(txq->data_dmat, data->map,
1741 BUS_DMASYNC_PREWRITE);
1744 txq->cur = (txq->cur + 1) % RT2661_TX_RING_COUNT;
1747 * IEEE Std 802.11-1999: when an RTS/CTS exchange is used, the
1748 * asynchronous data frame shall be transmitted after the CTS
1749 * frame and a SIFS period.
1751 flags |= RT2661_TX_LONG_RETRY | RT2661_TX_IFS;
1754 data = &txq->data[txq->cur];
1755 desc = &txq->desc[txq->cur];
1757 error = bus_dmamap_load_mbuf(txq->data_dmat, data->map, m0,
1758 rt2661_dma_map_mbuf, &map, 0);
1759 if (error != 0 && error != EFBIG) {
1760 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1766 mnew = m_defrag(m0, MB_DONTWAIT);
1768 device_printf(sc->sc_dev,
1769 "could not defragment mbuf\n");
1775 error = bus_dmamap_load_mbuf(txq->data_dmat, data->map, m0,
1776 rt2661_dma_map_mbuf, &map, 0);
1778 device_printf(sc->sc_dev,
1779 "could not map mbuf (error %d)\n", error);
1784 /* packet header have moved, reset our local pointer */
1785 wh = mtod(m0, struct ieee80211_frame *);
1788 if (sc->sc_drvbpf != NULL) {
1789 struct rt2661_tx_radiotap_header *tap = &sc->sc_txtap;
1792 tap->wt_rate = rate;
1793 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1794 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1796 bpf_ptap(sc->sc_drvbpf, m0, tap, sc->sc_txtap_len);
1801 rctl = kmalloc(sizeof(*rctl), M_RT2661, M_NOWAIT);
1805 /* remember link conditions for rate adaptation algorithm */
1806 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) {
1807 rctl->id.id_len = m0->m_pkthdr.len;
1808 rctl->id.id_rateidx = ni->ni_txrate;
1809 rctl->id.id_node = ni;
1810 rctl->id.id_rssi = ni->ni_rssi;
1812 rctl->id.id_node = NULL;
1814 STAILQ_INSERT_TAIL(&sc->tx_ratectl, rctl, link);
1817 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1818 flags |= RT2661_TX_NEED_ACK;
1820 dur = rt2661_txtime(RAL_ACK_SIZE, rt2661_ack_rate(ic, rate),
1821 ic->ic_flags) + RAL_SIFS;
1822 *(uint16_t *)wh->i_dur = htole16(dur);
1825 rt2661_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate,
1826 map.segs, map.nseg, ac, rctl != NULL);
1828 bus_dmamap_sync(txq->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1829 bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE);
1831 DPRINTFN(10, ("sending data frame len=%u idx=%u rate=%u\n",
1832 m0->m_pkthdr.len, txq->cur, rate));
1836 txq->cur = (txq->cur + 1) % RT2661_TX_RING_COUNT;
1837 RAL_WRITE(sc, RT2661_TX_CNTL_CSR, 1 << ac);
1840 ieee80211_free_node(ni);
1846 rt2661_start(struct ifnet *ifp)
1848 struct rt2661_softc *sc = ifp->if_softc;
1849 struct ieee80211com *ic = &sc->sc_ic;
1851 struct ether_header *eh;
1852 struct ieee80211_node *ni;
1855 /* prevent management frames from being sent if we're not ready */
1856 if (!(ifp->if_flags & IFF_RUNNING))
1860 IF_POLL(&ic->ic_mgtq, m0);
1862 if (sc->mgtq.queued >= RT2661_MGT_RING_COUNT) {
1863 ifp->if_flags |= IFF_OACTIVE;
1866 IF_DEQUEUE(&ic->ic_mgtq, m0);
1868 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif;
1869 m0->m_pkthdr.rcvif = NULL;
1871 if (ic->ic_rawbpf != NULL)
1872 bpf_mtap(ic->ic_rawbpf, m0);
1874 if (rt2661_tx_mgt(sc, m0, ni) != 0)
1878 if (ic->ic_state != IEEE80211_S_RUN)
1881 m0 = ifq_dequeue(&ifp->if_snd, NULL);
1885 if (m0->m_len < sizeof (struct ether_header) &&
1886 !(m0 = m_pullup(m0, sizeof (struct ether_header))))
1889 eh = mtod(m0, struct ether_header *);
1890 ni = ieee80211_find_txnode(ic, eh->ether_dhost);
1897 /* classify mbuf so we can find which tx ring to use */
1898 if (ieee80211_classify(ic, m0, ni) != 0) {
1900 ieee80211_free_node(ni);
1905 /* no QoS encapsulation for EAPOL frames */
1906 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ?
1907 M_WME_GETAC(m0) : WME_AC_BE;
1909 if (sc->txq[ac].queued >= RT2661_TX_RING_COUNT - 1) {
1910 /* there is no place left in this ring */
1911 ifp->if_flags |= IFF_OACTIVE;
1913 ieee80211_free_node(ni);
1919 m0 = ieee80211_encap(ic, m0, ni);
1921 ieee80211_free_node(ni);
1926 if (ic->ic_rawbpf != NULL)
1927 bpf_mtap(ic->ic_rawbpf, m0);
1929 if (rt2661_tx_data(sc, m0, ni, ac) != 0) {
1930 ieee80211_free_node(ni);
1936 sc->sc_tx_timer = 5;
1942 rt2661_watchdog(struct ifnet *ifp)
1944 struct rt2661_softc *sc = ifp->if_softc;
1945 struct ieee80211com *ic = &sc->sc_ic;
1949 if (sc->sc_tx_timer > 0) {
1950 if (--sc->sc_tx_timer == 0) {
1951 device_printf(sc->sc_dev, "device timeout\n");
1959 ieee80211_watchdog(ic);
1963 * This function allows for fast channel switching in monitor mode (used by
1964 * net-mgmt/kismet). In IBSS mode, we must explicitly reset the interface to
1965 * generate a new beacon frame.
1968 rt2661_reset(struct ifnet *ifp)
1970 struct rt2661_softc *sc = ifp->if_softc;
1971 struct ieee80211com *ic = &sc->sc_ic;
1973 if (ic->ic_opmode != IEEE80211_M_MONITOR)
1976 rt2661_set_chan(sc, ic->ic_curchan);
1982 rt2661_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr)
1984 struct rt2661_softc *sc = ifp->if_softc;
1985 struct ieee80211com *ic = &sc->sc_ic;
1990 if (ifp->if_flags & IFF_UP) {
1991 if (ifp->if_flags & IFF_RUNNING)
1992 rt2661_update_promisc(sc);
1996 if (ifp->if_flags & IFF_RUNNING)
2002 error = ieee80211_ioctl(ic, cmd, data, cr);
2005 if (error == ENETRESET) {
2006 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
2007 (IFF_UP | IFF_RUNNING) &&
2008 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL))
2016 rt2661_bbp_write(struct rt2661_softc *sc, uint8_t reg, uint8_t val)
2021 for (ntries = 0; ntries < 100; ntries++) {
2022 if (!(RAL_READ(sc, RT2661_PHY_CSR3) & RT2661_BBP_BUSY))
2026 if (ntries == 100) {
2027 device_printf(sc->sc_dev, "could not write to BBP\n");
2031 tmp = RT2661_BBP_BUSY | (reg & 0x7f) << 8 | val;
2032 RAL_WRITE(sc, RT2661_PHY_CSR3, tmp);
2034 DPRINTFN(15, ("BBP R%u <- 0x%02x\n", reg, val));
2038 rt2661_bbp_read(struct rt2661_softc *sc, uint8_t reg)
2043 for (ntries = 0; ntries < 100; ntries++) {
2044 if (!(RAL_READ(sc, RT2661_PHY_CSR3) & RT2661_BBP_BUSY))
2048 if (ntries == 100) {
2049 device_printf(sc->sc_dev, "could not read from BBP\n");
2053 val = RT2661_BBP_BUSY | RT2661_BBP_READ | reg << 8;
2054 RAL_WRITE(sc, RT2661_PHY_CSR3, val);
2056 for (ntries = 0; ntries < 100; ntries++) {
2057 val = RAL_READ(sc, RT2661_PHY_CSR3);
2058 if (!(val & RT2661_BBP_BUSY))
2063 device_printf(sc->sc_dev, "could not read from BBP\n");
2068 rt2661_rf_write(struct rt2661_softc *sc, uint8_t reg, uint32_t val)
2073 for (ntries = 0; ntries < 100; ntries++) {
2074 if (!(RAL_READ(sc, RT2661_PHY_CSR4) & RT2661_RF_BUSY))
2078 if (ntries == 100) {
2079 device_printf(sc->sc_dev, "could not write to RF\n");
2083 tmp = RT2661_RF_BUSY | RT2661_RF_21BIT | (val & 0x1fffff) << 2 |
2085 RAL_WRITE(sc, RT2661_PHY_CSR4, tmp);
2087 /* remember last written value in sc */
2088 sc->rf_regs[reg] = val;
2090 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0x1fffff));
2094 rt2661_tx_cmd(struct rt2661_softc *sc, uint8_t cmd, uint16_t arg)
2096 if (RAL_READ(sc, RT2661_H2M_MAILBOX_CSR) & RT2661_H2M_BUSY)
2097 return EIO; /* there is already a command pending */
2099 RAL_WRITE(sc, RT2661_H2M_MAILBOX_CSR,
2100 RT2661_H2M_BUSY | RT2661_TOKEN_NO_INTR << 16 | arg);
2102 RAL_WRITE(sc, RT2661_HOST_CMD_CSR, RT2661_KICK_CMD | cmd);
2108 rt2661_select_antenna(struct rt2661_softc *sc)
2110 uint8_t bbp4, bbp77;
2113 bbp4 = rt2661_bbp_read(sc, 4);
2114 bbp77 = rt2661_bbp_read(sc, 77);
2118 /* make sure Rx is disabled before switching antenna */
2119 tmp = RAL_READ(sc, RT2661_TXRX_CSR0);
2120 RAL_WRITE(sc, RT2661_TXRX_CSR0, tmp | RT2661_DISABLE_RX);
2122 rt2661_bbp_write(sc, 4, bbp4);
2123 rt2661_bbp_write(sc, 77, bbp77);
2125 /* restore Rx filter */
2126 RAL_WRITE(sc, RT2661_TXRX_CSR0, tmp);
2130 * Enable multi-rate retries for frames sent at OFDM rates.
2131 * In 802.11b/g mode, allow fallback to CCK rates.
2134 rt2661_enable_mrr(struct rt2661_softc *sc)
2136 struct ieee80211com *ic = &sc->sc_ic;
2139 tmp = RAL_READ(sc, RT2661_TXRX_CSR4);
2141 tmp &= ~RT2661_MRR_CCK_FALLBACK;
2142 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_bss->ni_chan))
2143 tmp |= RT2661_MRR_CCK_FALLBACK;
2144 tmp |= RT2661_MRR_ENABLED;
2146 RAL_WRITE(sc, RT2661_TXRX_CSR4, tmp);
2150 rt2661_set_txpreamble(struct rt2661_softc *sc)
2154 tmp = RAL_READ(sc, RT2661_TXRX_CSR4);
2156 tmp &= ~RT2661_SHORT_PREAMBLE;
2157 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE)
2158 tmp |= RT2661_SHORT_PREAMBLE;
2160 RAL_WRITE(sc, RT2661_TXRX_CSR4, tmp);
2164 rt2661_set_basicrates(struct rt2661_softc *sc,
2165 const struct ieee80211_rateset *rs)
2167 #define RV(r) ((r) & IEEE80211_RATE_VAL)
2172 for (i = 0; i < rs->rs_nrates; i++) {
2173 rate = rs->rs_rates[i];
2175 if (!(rate & IEEE80211_RATE_BASIC))
2179 * Find h/w rate index. We know it exists because the rate
2180 * set has already been negotiated.
2182 for (j = 0; rt2661_rateset_11g.rs_rates[j] != RV(rate); j++);
2187 RAL_WRITE(sc, RT2661_TXRX_CSR5, mask);
2189 DPRINTF(("Setting basic rate mask to 0x%x\n", mask));
2194 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference
2198 rt2661_select_band(struct rt2661_softc *sc, struct ieee80211_channel *c)
2200 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104;
2203 /* update all BBP registers that depend on the band */
2204 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c;
2205 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48;
2206 if (IEEE80211_IS_CHAN_5GHZ(c)) {
2207 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c;
2208 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10;
2210 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
2211 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
2212 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10;
2215 rt2661_bbp_write(sc, 17, bbp17);
2216 rt2661_bbp_write(sc, 96, bbp96);
2217 rt2661_bbp_write(sc, 104, bbp104);
2219 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
2220 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
2221 rt2661_bbp_write(sc, 75, 0x80);
2222 rt2661_bbp_write(sc, 86, 0x80);
2223 rt2661_bbp_write(sc, 88, 0x80);
2226 rt2661_bbp_write(sc, 35, bbp35);
2227 rt2661_bbp_write(sc, 97, bbp97);
2228 rt2661_bbp_write(sc, 98, bbp98);
2230 tmp = RAL_READ(sc, RT2661_PHY_CSR0);
2231 tmp &= ~(RT2661_PA_PE_2GHZ | RT2661_PA_PE_5GHZ);
2232 if (IEEE80211_IS_CHAN_2GHZ(c))
2233 tmp |= RT2661_PA_PE_2GHZ;
2235 tmp |= RT2661_PA_PE_5GHZ;
2236 RAL_WRITE(sc, RT2661_PHY_CSR0, tmp);
2240 rt2661_set_chan(struct rt2661_softc *sc, struct ieee80211_channel *c)
2242 struct ieee80211com *ic = &sc->sc_ic;
2243 const struct rfprog *rfprog;
2244 uint8_t bbp3, bbp94 = RT2661_BBPR94_DEFAULT;
2248 chan = ieee80211_chan2ieee(ic, c);
2249 if (chan == 0 || chan == IEEE80211_CHAN_ANY)
2252 /* select the appropriate RF settings based on what EEPROM says */
2253 rfprog = (sc->rfprog == 0) ? rt2661_rf5225_1 : rt2661_rf5225_2;
2255 /* find the settings for this channel (we know it exists) */
2256 for (i = 0; rfprog[i].chan != chan; i++);
2258 power = sc->txpow[i];
2262 } else if (power > 31) {
2263 bbp94 += power - 31;
2268 * If we are switching from the 2GHz band to the 5GHz band or
2269 * vice-versa, BBP registers need to be reprogrammed.
2271 if (c->ic_flags != sc->sc_curchan->ic_flags) {
2272 rt2661_select_band(sc, c);
2273 rt2661_select_antenna(sc);
2277 rt2661_rf_write(sc, RAL_RF1, rfprog[i].r1);
2278 rt2661_rf_write(sc, RAL_RF2, rfprog[i].r2);
2279 rt2661_rf_write(sc, RAL_RF3, rfprog[i].r3 | power << 7);
2280 rt2661_rf_write(sc, RAL_RF4, rfprog[i].r4 | sc->rffreq << 10);
2284 rt2661_rf_write(sc, RAL_RF1, rfprog[i].r1);
2285 rt2661_rf_write(sc, RAL_RF2, rfprog[i].r2);
2286 rt2661_rf_write(sc, RAL_RF3, rfprog[i].r3 | power << 7 | 1);
2287 rt2661_rf_write(sc, RAL_RF4, rfprog[i].r4 | sc->rffreq << 10);
2291 rt2661_rf_write(sc, RAL_RF1, rfprog[i].r1);
2292 rt2661_rf_write(sc, RAL_RF2, rfprog[i].r2);
2293 rt2661_rf_write(sc, RAL_RF3, rfprog[i].r3 | power << 7);
2294 rt2661_rf_write(sc, RAL_RF4, rfprog[i].r4 | sc->rffreq << 10);
2296 /* enable smart mode for MIMO-capable RFs */
2297 bbp3 = rt2661_bbp_read(sc, 3);
2299 bbp3 &= ~RT2661_SMART_MODE;
2300 if (sc->rf_rev == RT2661_RF_5325 || sc->rf_rev == RT2661_RF_2529)
2301 bbp3 |= RT2661_SMART_MODE;
2303 rt2661_bbp_write(sc, 3, bbp3);
2305 if (bbp94 != RT2661_BBPR94_DEFAULT)
2306 rt2661_bbp_write(sc, 94, bbp94);
2308 /* 5GHz radio needs a 1ms delay here */
2309 if (IEEE80211_IS_CHAN_5GHZ(c))
2314 rt2661_set_bssid(struct rt2661_softc *sc, const uint8_t *bssid)
2318 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
2319 RAL_WRITE(sc, RT2661_MAC_CSR4, tmp);
2321 tmp = bssid[4] | bssid[5] << 8 | RT2661_ONE_BSSID << 16;
2322 RAL_WRITE(sc, RT2661_MAC_CSR5, tmp);
2326 rt2661_set_macaddr(struct rt2661_softc *sc, const uint8_t *addr)
2330 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
2331 RAL_WRITE(sc, RT2661_MAC_CSR2, tmp);
2333 tmp = addr[4] | addr[5] << 8;
2334 RAL_WRITE(sc, RT2661_MAC_CSR3, tmp);
2338 rt2661_update_promisc(struct rt2661_softc *sc)
2340 struct ifnet *ifp = sc->sc_ic.ic_ifp;
2343 tmp = RAL_READ(sc, RT2661_TXRX_CSR0);
2345 tmp &= ~RT2661_DROP_NOT_TO_ME;
2346 if (!(ifp->if_flags & IFF_PROMISC))
2347 tmp |= RT2661_DROP_NOT_TO_ME;
2349 RAL_WRITE(sc, RT2661_TXRX_CSR0, tmp);
2351 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
2352 "entering" : "leaving"));
2356 * Update QoS (802.11e) settings for each h/w Tx ring.
2359 rt2661_wme_update(struct ieee80211com *ic)
2361 struct rt2661_softc *sc = ic->ic_ifp->if_softc;
2362 const struct wmeParams *wmep;
2364 wmep = ic->ic_wme.wme_chanParams.cap_wmeParams;
2366 /* XXX: not sure about shifts. */
2367 /* XXX: the reference driver plays with AC_VI settings too. */
2370 RAL_WRITE(sc, RT2661_AC_TXOP_CSR0,
2371 wmep[WME_AC_BE].wmep_txopLimit << 16 |
2372 wmep[WME_AC_BK].wmep_txopLimit);
2373 RAL_WRITE(sc, RT2661_AC_TXOP_CSR1,
2374 wmep[WME_AC_VI].wmep_txopLimit << 16 |
2375 wmep[WME_AC_VO].wmep_txopLimit);
2378 RAL_WRITE(sc, RT2661_CWMIN_CSR,
2379 wmep[WME_AC_BE].wmep_logcwmin << 12 |
2380 wmep[WME_AC_BK].wmep_logcwmin << 8 |
2381 wmep[WME_AC_VI].wmep_logcwmin << 4 |
2382 wmep[WME_AC_VO].wmep_logcwmin);
2385 RAL_WRITE(sc, RT2661_CWMAX_CSR,
2386 wmep[WME_AC_BE].wmep_logcwmax << 12 |
2387 wmep[WME_AC_BK].wmep_logcwmax << 8 |
2388 wmep[WME_AC_VI].wmep_logcwmax << 4 |
2389 wmep[WME_AC_VO].wmep_logcwmax);
2392 RAL_WRITE(sc, RT2661_AIFSN_CSR,
2393 wmep[WME_AC_BE].wmep_aifsn << 12 |
2394 wmep[WME_AC_BK].wmep_aifsn << 8 |
2395 wmep[WME_AC_VI].wmep_aifsn << 4 |
2396 wmep[WME_AC_VO].wmep_aifsn);
2402 rt2661_update_slot(struct ifnet *ifp)
2404 struct rt2661_softc *sc = ifp->if_softc;
2405 struct ieee80211com *ic = &sc->sc_ic;
2409 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
2411 tmp = RAL_READ(sc, RT2661_MAC_CSR9);
2412 tmp = (tmp & ~0xff) | slottime;
2413 RAL_WRITE(sc, RT2661_MAC_CSR9, tmp);
2417 rt2661_get_rf(int rev)
2420 case RT2661_RF_5225: return "RT5225";
2421 case RT2661_RF_5325: return "RT5325 (MIMO XR)";
2422 case RT2661_RF_2527: return "RT2527";
2423 case RT2661_RF_2529: return "RT2529 (MIMO XR)";
2424 default: return "unknown";
2429 rt2661_read_eeprom(struct rt2661_softc *sc)
2431 struct ieee80211com *ic = &sc->sc_ic;
2435 /* read MAC address */
2436 val = rt2661_eeprom_read(sc, RT2661_EEPROM_MAC01);
2437 ic->ic_myaddr[0] = val & 0xff;
2438 ic->ic_myaddr[1] = val >> 8;
2440 val = rt2661_eeprom_read(sc, RT2661_EEPROM_MAC23);
2441 ic->ic_myaddr[2] = val & 0xff;
2442 ic->ic_myaddr[3] = val >> 8;
2444 val = rt2661_eeprom_read(sc, RT2661_EEPROM_MAC45);
2445 ic->ic_myaddr[4] = val & 0xff;
2446 ic->ic_myaddr[5] = val >> 8;
2448 val = rt2661_eeprom_read(sc, RT2661_EEPROM_ANTENNA);
2449 /* XXX: test if different from 0xffff? */
2450 sc->rf_rev = (val >> 11) & 0x1f;
2451 sc->hw_radio = (val >> 10) & 0x1;
2452 sc->rx_ant = (val >> 4) & 0x3;
2453 sc->tx_ant = (val >> 2) & 0x3;
2454 sc->nb_ant = val & 0x3;
2456 DPRINTF(("RF revision=%d\n", sc->rf_rev));
2458 val = rt2661_eeprom_read(sc, RT2661_EEPROM_CONFIG2);
2459 sc->ext_5ghz_lna = (val >> 6) & 0x1;
2460 sc->ext_2ghz_lna = (val >> 4) & 0x1;
2462 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n",
2463 sc->ext_2ghz_lna, sc->ext_5ghz_lna));
2465 val = rt2661_eeprom_read(sc, RT2661_EEPROM_RSSI_2GHZ_OFFSET);
2466 if ((val & 0xff) != 0xff)
2467 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */
2469 /* Only [-10, 10] is valid */
2470 if (sc->rssi_2ghz_corr < -10 || sc->rssi_2ghz_corr > 10)
2471 sc->rssi_2ghz_corr = 0;
2473 val = rt2661_eeprom_read(sc, RT2661_EEPROM_RSSI_5GHZ_OFFSET);
2474 if ((val & 0xff) != 0xff)
2475 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */
2477 /* Only [-10, 10] is valid */
2478 if (sc->rssi_5ghz_corr < -10 || sc->rssi_5ghz_corr > 10)
2479 sc->rssi_5ghz_corr = 0;
2481 /* adjust RSSI correction for external low-noise amplifier */
2482 if (sc->ext_2ghz_lna)
2483 sc->rssi_2ghz_corr -= 14;
2484 if (sc->ext_5ghz_lna)
2485 sc->rssi_5ghz_corr -= 14;
2487 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n",
2488 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr));
2490 val = rt2661_eeprom_read(sc, RT2661_EEPROM_FREQ_OFFSET);
2491 if ((val >> 8) != 0xff)
2492 sc->rfprog = (val >> 8) & 0x3;
2493 if ((val & 0xff) != 0xff)
2494 sc->rffreq = val & 0xff;
2496 DPRINTF(("RF prog=%d\nRF freq=%d\n", sc->rfprog, sc->rffreq));
2498 /* read Tx power for all a/b/g channels */
2499 for (i = 0; i < 19; i++) {
2500 val = rt2661_eeprom_read(sc, RT2661_EEPROM_TXPOWER + i);
2501 sc->txpow[i * 2] = (int8_t)(val >> 8); /* signed */
2502 DPRINTF(("Channel=%d Tx power=%d\n",
2503 rt2661_rf5225_1[i * 2].chan, sc->txpow[i * 2]));
2504 sc->txpow[i * 2 + 1] = (int8_t)(val & 0xff); /* signed */
2505 DPRINTF(("Channel=%d Tx power=%d\n",
2506 rt2661_rf5225_1[i * 2 + 1].chan, sc->txpow[i * 2 + 1]));
2509 /* read vendor-specific BBP values */
2510 for (i = 0; i < 16; i++) {
2511 val = rt2661_eeprom_read(sc, RT2661_EEPROM_BBP_BASE + i);
2512 if (val == 0 || val == 0xffff)
2513 continue; /* skip invalid entries */
2514 sc->bbp_prom[i].reg = val >> 8;
2515 sc->bbp_prom[i].val = val & 0xff;
2516 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg,
2517 sc->bbp_prom[i].val));
2520 val = rt2661_eeprom_read(sc, RT2661_EEPROM_LED_OFFSET);
2521 DPRINTF(("LED %02x\n", val));
2522 if (val == 0xffff) {
2523 sc->mcu_led = RT2661_MCU_LED_DEFAULT;
2525 #define N(arr) (int)(sizeof(arr) / sizeof(arr[0]))
2527 for (i = 0; i < N(led_ee2mcu); ++i) {
2528 if (val & led_ee2mcu[i].ee_bit)
2529 sc->mcu_led |= led_ee2mcu[i].mcu_bit;
2534 sc->mcu_led |= ((val >> RT2661_EE_LED_MODE_SHIFT) &
2535 RT2661_EE_LED_MODE_MASK);
2540 rt2661_bbp_init(struct rt2661_softc *sc)
2542 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2546 /* wait for BBP to be ready */
2547 for (ntries = 0; ntries < 100; ntries++) {
2548 val = rt2661_bbp_read(sc, 0);
2549 if (val != 0 && val != 0xff)
2553 if (ntries == 100) {
2554 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
2558 /* initialize BBP registers to default values */
2559 for (i = 0; i < N(rt2661_def_bbp); i++) {
2560 rt2661_bbp_write(sc, rt2661_def_bbp[i].reg,
2561 rt2661_def_bbp[i].val);
2564 /* write vendor-specific BBP values (from EEPROM) */
2565 for (i = 0; i < 16; i++) {
2566 if (sc->bbp_prom[i].reg == 0)
2568 rt2661_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
2576 rt2661_init(void *priv)
2578 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2579 struct rt2661_softc *sc = priv;
2580 struct ieee80211com *ic = &sc->sc_ic;
2581 struct ifnet *ifp = ic->ic_ifp;
2582 uint32_t tmp, sta[3];
2587 /* initialize Tx rings */
2588 RAL_WRITE(sc, RT2661_AC1_BASE_CSR, sc->txq[1].physaddr);
2589 RAL_WRITE(sc, RT2661_AC0_BASE_CSR, sc->txq[0].physaddr);
2590 RAL_WRITE(sc, RT2661_AC2_BASE_CSR, sc->txq[2].physaddr);
2591 RAL_WRITE(sc, RT2661_AC3_BASE_CSR, sc->txq[3].physaddr);
2593 /* initialize Mgt ring */
2594 RAL_WRITE(sc, RT2661_MGT_BASE_CSR, sc->mgtq.physaddr);
2596 /* initialize Rx ring */
2597 RAL_WRITE(sc, RT2661_RX_BASE_CSR, sc->rxq.physaddr);
2599 /* initialize Tx rings sizes */
2600 RAL_WRITE(sc, RT2661_TX_RING_CSR0,
2601 RT2661_TX_RING_COUNT << 24 |
2602 RT2661_TX_RING_COUNT << 16 |
2603 RT2661_TX_RING_COUNT << 8 |
2604 RT2661_TX_RING_COUNT);
2606 RAL_WRITE(sc, RT2661_TX_RING_CSR1,
2607 RT2661_TX_DESC_WSIZE << 16 |
2608 RT2661_TX_RING_COUNT << 8 | /* XXX: HCCA ring unused */
2609 RT2661_MGT_RING_COUNT);
2611 /* initialize Rx rings */
2612 RAL_WRITE(sc, RT2661_RX_RING_CSR,
2613 RT2661_RX_DESC_BACK << 16 |
2614 RT2661_RX_DESC_WSIZE << 8 |
2615 RT2661_RX_RING_COUNT);
2617 /* XXX: some magic here */
2618 RAL_WRITE(sc, RT2661_TX_DMA_DST_CSR, 0xaa);
2620 /* load base addresses of all 5 Tx rings (4 data + 1 mgt) */
2621 RAL_WRITE(sc, RT2661_LOAD_TX_RING_CSR, 0x1f);
2623 /* load base address of Rx ring */
2624 RAL_WRITE(sc, RT2661_RX_CNTL_CSR, 2);
2626 /* initialize MAC registers to default values */
2627 for (i = 0; i < N(rt2661_def_mac); i++)
2628 RAL_WRITE(sc, rt2661_def_mac[i].reg, rt2661_def_mac[i].val);
2630 IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp));
2631 rt2661_set_macaddr(sc, ic->ic_myaddr);
2633 /* set host ready */
2634 RAL_WRITE(sc, RT2661_MAC_CSR1, 3);
2635 RAL_WRITE(sc, RT2661_MAC_CSR1, 0);
2637 /* wait for BBP/RF to wakeup */
2638 for (ntries = 0; ntries < 1000; ntries++) {
2639 if (RAL_READ(sc, RT2661_MAC_CSR12) & 8)
2643 if (ntries == 1000) {
2644 kprintf("timeout waiting for BBP/RF to wakeup\n");
2649 if (rt2661_bbp_init(sc) != 0) {
2654 /* select default channel */
2655 sc->sc_curchan = ic->ic_curchan;
2656 rt2661_select_band(sc, sc->sc_curchan);
2657 rt2661_select_antenna(sc);
2658 rt2661_set_chan(sc, sc->sc_curchan);
2660 /* update Rx filter */
2661 tmp = RAL_READ(sc, RT2661_TXRX_CSR0) & 0xffff;
2663 tmp |= RT2661_DROP_PHY_ERROR | RT2661_DROP_CRC_ERROR;
2664 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2665 tmp |= RT2661_DROP_CTL | RT2661_DROP_VER_ERROR |
2667 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2668 tmp |= RT2661_DROP_TODS;
2669 if (!(ifp->if_flags & IFF_PROMISC))
2670 tmp |= RT2661_DROP_NOT_TO_ME;
2673 RAL_WRITE(sc, RT2661_TXRX_CSR0, tmp);
2675 /* clear STA registers */
2676 RAL_READ_REGION_4(sc, RT2661_STA_CSR0, sta, N(sta));
2678 /* initialize ASIC */
2679 RAL_WRITE(sc, RT2661_MAC_CSR1, 4);
2681 /* clear any pending interrupt */
2682 RAL_WRITE(sc, RT2661_INT_SOURCE_CSR, 0xffffffff);
2684 /* enable interrupts */
2685 RAL_WRITE(sc, RT2661_INT_MASK_CSR, 0x0000ff10);
2686 RAL_WRITE(sc, RT2661_MCU_INT_MASK_CSR, 0);
2689 RAL_WRITE(sc, RT2661_RX_CNTL_CSR, 1);
2691 ifp->if_flags &= ~IFF_OACTIVE;
2692 ifp->if_flags |= IFF_RUNNING;
2694 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2695 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
2696 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
2698 ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
2703 rt2661_stop(void *priv)
2705 struct rt2661_softc *sc = priv;
2706 struct ieee80211com *ic = &sc->sc_ic;
2707 struct ifnet *ifp = ic->ic_ifp;
2708 struct rt2661_tx_ratectl *rctl;
2711 ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
2713 sc->sc_tx_timer = 0;
2715 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
2717 /* abort Tx (for all 5 Tx rings) */
2718 RAL_WRITE(sc, RT2661_TX_CNTL_CSR, 0x1f << 16);
2720 /* disable Rx (value remains after reset!) */
2721 tmp = RAL_READ(sc, RT2661_TXRX_CSR0);
2722 RAL_WRITE(sc, RT2661_TXRX_CSR0, tmp | RT2661_DISABLE_RX);
2725 RAL_WRITE(sc, RT2661_MAC_CSR1, 3);
2726 RAL_WRITE(sc, RT2661_MAC_CSR1, 0);
2728 /* disable interrupts */
2729 RAL_WRITE(sc, RT2661_INT_MASK_CSR, 0xffffffff);
2730 RAL_WRITE(sc, RT2661_MCU_INT_MASK_CSR, 0xffffffff);
2732 /* clear any pending interrupt */
2733 RAL_WRITE(sc, RT2661_INT_SOURCE_CSR, 0xffffffff);
2734 RAL_WRITE(sc, RT2661_MCU_INT_SOURCE_CSR, 0xffffffff);
2736 while ((rctl = STAILQ_FIRST(&sc->tx_ratectl)) != NULL) {
2737 STAILQ_REMOVE_HEAD(&sc->tx_ratectl, link);
2738 ieee80211_free_node(rctl->ni);
2740 kfree(rctl, M_RT2661);
2743 /* reset Tx and Rx rings */
2744 rt2661_reset_tx_ring(sc, &sc->txq[0]);
2745 rt2661_reset_tx_ring(sc, &sc->txq[1]);
2746 rt2661_reset_tx_ring(sc, &sc->txq[2]);
2747 rt2661_reset_tx_ring(sc, &sc->txq[3]);
2748 rt2661_reset_tx_ring(sc, &sc->mgtq);
2749 rt2661_reset_rx_ring(sc, &sc->rxq);
2753 rt2661_load_microcode(struct rt2661_softc *sc, const uint8_t *ucode, int size)
2758 RAL_WRITE(sc, RT2661_MCU_CNTL_CSR, RT2661_MCU_RESET);
2760 /* cancel any pending Host to MCU command */
2761 RAL_WRITE(sc, RT2661_H2M_MAILBOX_CSR, 0);
2762 RAL_WRITE(sc, RT2661_M2H_CMD_DONE_CSR, 0xffffffff);
2763 RAL_WRITE(sc, RT2661_HOST_CMD_CSR, 0);
2765 /* write 8051's microcode */
2766 RAL_WRITE(sc, RT2661_MCU_CNTL_CSR, RT2661_MCU_RESET | RT2661_MCU_SEL);
2767 RAL_WRITE_REGION_1(sc, RT2661_MCU_CODE_BASE, ucode, size);
2768 RAL_WRITE(sc, RT2661_MCU_CNTL_CSR, RT2661_MCU_RESET);
2770 /* kick 8051's ass */
2771 RAL_WRITE(sc, RT2661_MCU_CNTL_CSR, 0);
2773 /* wait for 8051 to initialize */
2774 for (ntries = 0; ntries < 500; ntries++) {
2775 if (RAL_READ(sc, RT2661_MCU_CNTL_CSR) & RT2661_MCU_READY)
2779 if (ntries == 500) {
2780 kprintf("timeout waiting for MCU to initialize\n");
2788 * Dynamically tune Rx sensitivity (BBP register 17) based on average RSSI and
2789 * false CCA count. This function is called periodically (every seconds) when
2790 * in the RUN state. Values taken from the reference driver.
2793 rt2661_rx_tune(struct rt2661_softc *sc)
2800 * Tuning range depends on operating band and on the presence of an
2801 * external low-noise amplifier.
2804 if (IEEE80211_IS_CHAN_5GHZ(sc->sc_curchan))
2806 if ((IEEE80211_IS_CHAN_2GHZ(sc->sc_curchan) && sc->ext_2ghz_lna) ||
2807 (IEEE80211_IS_CHAN_5GHZ(sc->sc_curchan) && sc->ext_5ghz_lna))
2811 /* retrieve false CCA count since last call (clear on read) */
2812 cca = RAL_READ(sc, RT2661_STA_CSR1) & 0xffff;
2816 } else if (dbm >= -58) {
2818 } else if (dbm >= -66) {
2820 } else if (dbm >= -74) {
2823 /* RSSI < -74dBm, tune using false CCA count */
2825 bbp17 = sc->bbp17; /* current value */
2827 hi -= 2 * (-74 - dbm);
2834 } else if (cca > 512) {
2837 } else if (cca < 100) {
2843 if (bbp17 != sc->bbp17) {
2844 rt2661_bbp_write(sc, 17, bbp17);
2850 * Enter/Leave radar detection mode.
2851 * This is for 802.11h additional regulatory domains.
2854 rt2661_radar_start(struct rt2661_softc *sc)
2859 tmp = RAL_READ(sc, RT2661_TXRX_CSR0);
2860 RAL_WRITE(sc, RT2661_TXRX_CSR0, tmp | RT2661_DISABLE_RX);
2862 rt2661_bbp_write(sc, 82, 0x20);
2863 rt2661_bbp_write(sc, 83, 0x00);
2864 rt2661_bbp_write(sc, 84, 0x40);
2866 /* save current BBP registers values */
2867 sc->bbp18 = rt2661_bbp_read(sc, 18);
2868 sc->bbp21 = rt2661_bbp_read(sc, 21);
2869 sc->bbp22 = rt2661_bbp_read(sc, 22);
2870 sc->bbp16 = rt2661_bbp_read(sc, 16);
2871 sc->bbp17 = rt2661_bbp_read(sc, 17);
2872 sc->bbp64 = rt2661_bbp_read(sc, 64);
2874 rt2661_bbp_write(sc, 18, 0xff);
2875 rt2661_bbp_write(sc, 21, 0x3f);
2876 rt2661_bbp_write(sc, 22, 0x3f);
2877 rt2661_bbp_write(sc, 16, 0xbd);
2878 rt2661_bbp_write(sc, 17, sc->ext_5ghz_lna ? 0x44 : 0x34);
2879 rt2661_bbp_write(sc, 64, 0x21);
2881 /* restore Rx filter */
2882 RAL_WRITE(sc, RT2661_TXRX_CSR0, tmp);
2886 rt2661_radar_stop(struct rt2661_softc *sc)
2890 /* read radar detection result */
2891 bbp66 = rt2661_bbp_read(sc, 66);
2893 /* restore BBP registers values */
2894 rt2661_bbp_write(sc, 16, sc->bbp16);
2895 rt2661_bbp_write(sc, 17, sc->bbp17);
2896 rt2661_bbp_write(sc, 18, sc->bbp18);
2897 rt2661_bbp_write(sc, 21, sc->bbp21);
2898 rt2661_bbp_write(sc, 22, sc->bbp22);
2899 rt2661_bbp_write(sc, 64, sc->bbp64);
2906 rt2661_prepare_beacon(struct rt2661_softc *sc)
2908 struct ieee80211com *ic = &sc->sc_ic;
2909 struct ieee80211_beacon_offsets bo;
2910 struct rt2661_tx_desc desc;
2914 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &bo);
2916 device_printf(sc->sc_dev, "could not allocate beacon frame\n");
2920 /* send beacons at the lowest available rate */
2921 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_bss->ni_chan) ? 12 : 2;
2923 rt2661_setup_tx_desc(sc, &desc, RT2661_TX_TIMESTAMP, RT2661_TX_HWSEQ,
2924 m0->m_pkthdr.len, rate, NULL, 0, RT2661_QID_MGT, 0);
2926 /* copy the first 24 bytes of Tx descriptor into NIC memory */
2927 RAL_WRITE_REGION_1(sc, RT2661_HW_BEACON_BASE0, (uint8_t *)&desc, 24);
2929 /* copy beacon header and payload into NIC memory */
2930 RAL_WRITE_REGION_1(sc, RT2661_HW_BEACON_BASE0 + 24,
2931 mtod(m0, uint8_t *), m0->m_pkthdr.len);
2938 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS
2939 * and HostAP operating modes.
2942 rt2661_enable_tsf_sync(struct rt2661_softc *sc)
2944 struct ieee80211com *ic = &sc->sc_ic;
2947 if (ic->ic_opmode != IEEE80211_M_STA) {
2949 * Change default 16ms TBTT adjustment to 8ms.
2950 * Must be done before enabling beacon generation.
2952 RAL_WRITE(sc, RT2661_TXRX_CSR10, 1 << 12 | 8);
2955 tmp = RAL_READ(sc, RT2661_TXRX_CSR9) & 0xff000000;
2957 /* set beacon interval (in 1/16ms unit) */
2958 tmp |= ic->ic_bss->ni_intval * 16;
2960 tmp |= RT2661_TSF_TICKING | RT2661_ENABLE_TBTT;
2961 if (ic->ic_opmode == IEEE80211_M_STA)
2962 tmp |= RT2661_TSF_MODE(1);
2964 tmp |= RT2661_TSF_MODE(2) | RT2661_GENERATE_BEACON;
2966 RAL_WRITE(sc, RT2661_TXRX_CSR9, tmp);
2970 * Retrieve the "Received Signal Strength Indicator" from the raw values
2971 * contained in Rx descriptors. The computation depends on which band the
2972 * frame was received. Correction values taken from the reference driver.
2975 rt2661_get_rssi(struct rt2661_softc *sc, uint8_t raw)
2979 lna = (raw >> 5) & 0x3;
2982 rssi = (2 * agc) - RT2661_NOISE_FLOOR;
2984 if (IEEE80211_IS_CHAN_2GHZ(sc->sc_curchan)) {
2985 rssi += sc->rssi_2ghz_corr;
2994 rssi += sc->rssi_5ghz_corr;
3007 rt2661_dma_map_mbuf(void *arg, bus_dma_segment_t *seg, int nseg,
3008 bus_size_t map_size __unused, int error)
3010 struct rt2661_dmamap *map = arg;
3015 KASSERT(nseg <= RT2661_MAX_SCATTER, ("too many DMA segments"));
3017 bcopy(seg, map->segs, nseg * sizeof(bus_dma_segment_t));
3022 rt2661_led_newstate(struct rt2661_softc *sc, enum ieee80211_state nstate)
3024 struct ieee80211com *ic = &sc->sc_ic;
3026 uint32_t mail = sc->mcu_led;
3028 if (RAL_READ(sc, RT2661_H2M_MAILBOX_CSR) & RT2661_H2M_BUSY) {
3029 DPRINTF(("%s failed\n", __func__));
3034 case IEEE80211_S_INIT:
3035 mail &= ~(RT2661_MCU_LED_LINKA | RT2661_MCU_LED_LINKG |
3039 if (ic->ic_curchan == NULL)
3042 on = RT2661_MCU_LED_LINKG;
3043 off = RT2661_MCU_LED_LINKA;
3044 if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) {
3045 on = RT2661_MCU_LED_LINKA;
3046 off = RT2661_MCU_LED_LINKG;
3049 mail |= RT2661_MCU_LED_RF | on;
3054 RAL_WRITE(sc, RT2661_H2M_MAILBOX_CSR,
3055 RT2661_H2M_BUSY | RT2661_TOKEN_NO_INTR << 16 | mail);
3056 RAL_WRITE(sc, RT2661_HOST_CMD_CSR, RT2661_KICK_CMD | RT2661_MCU_SET_LED);