4 * Copyright (c) 2005, 2006
5 * Damien Bergamini <damien.bergamini@free.fr>
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 #include <sys/cdefs.h>
21 __FBSDID("$FreeBSD$");
24 * Ralink Technology RT2560 chipset driver
25 * http://www.ralinktech.com/
28 #include <sys/param.h>
29 #include <sys/sysctl.h>
30 #include <sys/sockio.h>
32 #include <sys/kernel.h>
33 #include <sys/socket.h>
34 #include <sys/systm.h>
35 #include <sys/malloc.h>
36 #include <sys/module.h>
38 #include <sys/endian.h>
40 #include <machine/bus.h>
41 #include <machine/resource.h>
42 #include <machine/clock.h>
47 #include <net/if_arp.h>
48 #include <net/ethernet.h>
49 #include <net/if_dl.h>
50 #include <net/if_media.h>
51 #include <net/if_types.h>
53 #include <net80211/ieee80211_var.h>
54 #include <net80211/ieee80211_radiotap.h>
56 #include <netinet/in.h>
57 #include <netinet/in_systm.h>
58 #include <netinet/in_var.h>
59 #include <netinet/ip.h>
60 #include <netinet/if_ether.h>
62 #include <dev/ral/if_ralrate.h>
63 #include <dev/ral/rt2560reg.h>
64 #include <dev/ral/rt2560var.h>
67 #define DPRINTF(x) do { if (ral_debug > 0) printf x; } while (0)
68 #define DPRINTFN(n, x) do { if (ral_debug >= (n)) printf x; } while (0)
72 #define DPRINTFN(n, x)
75 static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int,
77 static int rt2560_alloc_tx_ring(struct rt2560_softc *,
78 struct rt2560_tx_ring *, int);
79 static void rt2560_reset_tx_ring(struct rt2560_softc *,
80 struct rt2560_tx_ring *);
81 static void rt2560_free_tx_ring(struct rt2560_softc *,
82 struct rt2560_tx_ring *);
83 static int rt2560_alloc_rx_ring(struct rt2560_softc *,
84 struct rt2560_rx_ring *, int);
85 static void rt2560_reset_rx_ring(struct rt2560_softc *,
86 struct rt2560_rx_ring *);
87 static void rt2560_free_rx_ring(struct rt2560_softc *,
88 struct rt2560_rx_ring *);
89 static struct ieee80211_node *rt2560_node_alloc(
90 struct ieee80211_node_table *);
91 static int rt2560_media_change(struct ifnet *);
92 static void rt2560_next_scan(void *);
93 static void rt2560_iter_func(void *, struct ieee80211_node *);
94 static void rt2560_update_rssadapt(void *);
95 static int rt2560_newstate(struct ieee80211com *,
96 enum ieee80211_state, int);
97 static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t);
98 static void rt2560_encryption_intr(struct rt2560_softc *);
99 static void rt2560_tx_intr(struct rt2560_softc *);
100 static void rt2560_prio_intr(struct rt2560_softc *);
101 static void rt2560_decryption_intr(struct rt2560_softc *);
102 static void rt2560_rx_intr(struct rt2560_softc *);
103 static void rt2560_beacon_expire(struct rt2560_softc *);
104 static void rt2560_wakeup_expire(struct rt2560_softc *);
105 static uint8_t rt2560_rxrate(struct rt2560_rx_desc *);
106 static int rt2560_ack_rate(struct ieee80211com *, int);
107 static uint16_t rt2560_txtime(int, int, uint32_t);
108 static uint8_t rt2560_plcp_signal(int);
109 static void rt2560_setup_tx_desc(struct rt2560_softc *,
110 struct rt2560_tx_desc *, uint32_t, int, int, int,
112 static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *,
113 struct ieee80211_node *);
114 static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *,
115 struct ieee80211_node *);
116 static struct mbuf *rt2560_get_rts(struct rt2560_softc *,
117 struct ieee80211_frame *, uint16_t);
118 static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *,
119 struct ieee80211_node *);
120 static void rt2560_start(struct ifnet *);
121 static void rt2560_watchdog(struct ifnet *);
122 static int rt2560_reset(struct ifnet *);
123 static int rt2560_ioctl(struct ifnet *, u_long, caddr_t);
124 static void rt2560_bbp_write(struct rt2560_softc *, uint8_t,
126 static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t);
127 static void rt2560_rf_write(struct rt2560_softc *, uint8_t,
129 static void rt2560_set_chan(struct rt2560_softc *,
130 struct ieee80211_channel *);
132 static void rt2560_disable_rf_tune(struct rt2560_softc *);
134 static void rt2560_enable_tsf_sync(struct rt2560_softc *);
135 static void rt2560_update_plcp(struct rt2560_softc *);
136 static void rt2560_update_slot(struct ifnet *);
137 static void rt2560_set_basicrates(struct rt2560_softc *);
138 static void rt2560_update_led(struct rt2560_softc *, int, int);
139 static void rt2560_set_bssid(struct rt2560_softc *, uint8_t *);
140 static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *);
141 static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *);
142 static void rt2560_update_promisc(struct rt2560_softc *);
143 static const char *rt2560_get_rf(int);
144 static void rt2560_read_eeprom(struct rt2560_softc *);
145 static int rt2560_bbp_init(struct rt2560_softc *);
146 static void rt2560_set_txantenna(struct rt2560_softc *, int);
147 static void rt2560_set_rxantenna(struct rt2560_softc *, int);
148 static void rt2560_init(void *);
149 static void rt2560_stop(void *);
152 * Supported rates for 802.11a/b/g modes (in 500Kbps unit).
154 static const struct ieee80211_rateset rt2560_rateset_11a =
155 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } };
157 static const struct ieee80211_rateset rt2560_rateset_11b =
158 { 4, { 2, 4, 11, 22 } };
160 static const struct ieee80211_rateset rt2560_rateset_11g =
161 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } };
163 static const struct {
166 } rt2560_def_mac[] = {
170 static const struct {
173 } rt2560_def_bbp[] = {
177 static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2;
178 static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2;
179 static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2;
180 static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2;
181 static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2;
182 static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2;
183 static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2;
184 static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2;
186 static const struct {
189 } rt2560_rf5222[] = {
194 rt2560_attach(device_t dev, int id)
196 struct rt2560_softc *sc = device_get_softc(dev);
197 struct ieee80211com *ic = &sc->sc_ic;
203 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
204 MTX_DEF | MTX_RECURSE);
206 callout_init(&sc->scan_ch, debug_mpsafenet ? CALLOUT_MPSAFE : 0);
207 callout_init(&sc->rssadapt_ch, CALLOUT_MPSAFE);
209 /* retrieve RT2560 rev. no */
210 sc->asic_rev = RAL_READ(sc, RT2560_CSR0);
212 /* retrieve MAC address */
213 rt2560_get_macaddr(sc, ic->ic_myaddr);
215 /* retrieve RF rev. no and various other things from EEPROM */
216 rt2560_read_eeprom(sc);
218 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n",
219 sc->asic_rev, rt2560_get_rf(sc->rf_rev));
222 * Allocate Tx and Rx rings.
224 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT);
226 device_printf(sc->sc_dev, "could not allocate Tx ring\n");
230 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT);
232 device_printf(sc->sc_dev, "could not allocate ATIM ring\n");
236 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT);
238 device_printf(sc->sc_dev, "could not allocate Prio ring\n");
242 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT);
244 device_printf(sc->sc_dev, "could not allocate Beacon ring\n");
248 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT);
250 device_printf(sc->sc_dev, "could not allocate Rx ring\n");
254 ifp = sc->sc_ifp = if_alloc(IFT_ETHER);
256 device_printf(sc->sc_dev, "can not if_alloc()\n");
261 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
262 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
263 ifp->if_init = rt2560_init;
264 ifp->if_ioctl = rt2560_ioctl;
265 ifp->if_start = rt2560_start;
266 ifp->if_watchdog = rt2560_watchdog;
267 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
268 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
269 IFQ_SET_READY(&ifp->if_snd);
272 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
273 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */
274 ic->ic_state = IEEE80211_S_INIT;
276 /* set device capabilities */
278 IEEE80211_C_IBSS | /* IBSS mode supported */
279 IEEE80211_C_MONITOR | /* monitor mode supported */
280 IEEE80211_C_HOSTAP | /* HostAp mode supported */
281 IEEE80211_C_TXPMGT | /* tx power management */
282 IEEE80211_C_SHPREAMBLE | /* short preamble supported */
283 IEEE80211_C_SHSLOT | /* short slot time supported */
284 IEEE80211_C_WPA; /* 802.11i */
286 if (sc->rf_rev == RT2560_RF_5222) {
287 /* set supported .11a rates */
288 ic->ic_sup_rates[IEEE80211_MODE_11A] = rt2560_rateset_11a;
290 /* set supported .11a channels */
291 for (i = 36; i <= 64; i += 4) {
292 ic->ic_channels[i].ic_freq =
293 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
294 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
296 for (i = 100; i <= 140; i += 4) {
297 ic->ic_channels[i].ic_freq =
298 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
299 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
301 for (i = 149; i <= 161; i += 4) {
302 ic->ic_channels[i].ic_freq =
303 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
304 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
308 /* set supported .11b and .11g rates */
309 ic->ic_sup_rates[IEEE80211_MODE_11B] = rt2560_rateset_11b;
310 ic->ic_sup_rates[IEEE80211_MODE_11G] = rt2560_rateset_11g;
312 /* set supported .11b and .11g channels (1 through 14) */
313 for (i = 1; i <= 14; i++) {
314 ic->ic_channels[i].ic_freq =
315 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
316 ic->ic_channels[i].ic_flags =
317 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM |
318 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ;
321 ieee80211_ifattach(ic);
322 ic->ic_node_alloc = rt2560_node_alloc;
323 ic->ic_updateslot = rt2560_update_slot;
324 ic->ic_reset = rt2560_reset;
325 /* enable s/w bmiss handling in sta mode */
326 ic->ic_flags_ext |= IEEE80211_FEXT_SWBMISS;
328 /* override state transition machine */
329 sc->sc_newstate = ic->ic_newstate;
330 ic->ic_newstate = rt2560_newstate;
331 ieee80211_media_init(ic, rt2560_media_change, ieee80211_media_status);
333 bpfattach2(ifp, DLT_IEEE802_11_RADIO,
334 sizeof (struct ieee80211_frame) + 64, &sc->sc_drvbpf);
336 sc->sc_rxtap_len = sizeof sc->sc_rxtapu;
337 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
338 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2560_RX_RADIOTAP_PRESENT);
340 sc->sc_txtap_len = sizeof sc->sc_txtapu;
341 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
342 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2560_TX_RADIOTAP_PRESENT);
345 * Add a few sysctl knobs.
349 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
350 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
351 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)");
353 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
354 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
355 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)");
357 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
358 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "dwell",
359 CTLFLAG_RW, &sc->dwelltime, 0,
360 "channel dwell time (ms) for AP/station scanning");
363 ieee80211_announce(ic);
367 fail6: rt2560_free_rx_ring(sc, &sc->rxq);
368 fail5: rt2560_free_tx_ring(sc, &sc->bcnq);
369 fail4: rt2560_free_tx_ring(sc, &sc->prioq);
370 fail3: rt2560_free_tx_ring(sc, &sc->atimq);
371 fail2: rt2560_free_tx_ring(sc, &sc->txq);
372 fail1: mtx_destroy(&sc->sc_mtx);
378 rt2560_detach(void *xsc)
380 struct rt2560_softc *sc = xsc;
381 struct ieee80211com *ic = &sc->sc_ic;
382 struct ifnet *ifp = ic->ic_ifp;
385 callout_stop(&sc->scan_ch);
386 callout_stop(&sc->rssadapt_ch);
389 ieee80211_ifdetach(ic);
391 rt2560_free_tx_ring(sc, &sc->txq);
392 rt2560_free_tx_ring(sc, &sc->atimq);
393 rt2560_free_tx_ring(sc, &sc->prioq);
394 rt2560_free_tx_ring(sc, &sc->bcnq);
395 rt2560_free_rx_ring(sc, &sc->rxq);
399 mtx_destroy(&sc->sc_mtx);
405 rt2560_shutdown(void *xsc)
407 struct rt2560_softc *sc = xsc;
413 rt2560_suspend(void *xsc)
415 struct rt2560_softc *sc = xsc;
421 rt2560_resume(void *xsc)
423 struct rt2560_softc *sc = xsc;
424 struct ifnet *ifp = sc->sc_ic.ic_ifp;
426 if (ifp->if_flags & IFF_UP) {
427 ifp->if_init(ifp->if_softc);
428 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
434 rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
439 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
441 *(bus_addr_t *)arg = segs[0].ds_addr;
445 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring,
452 ring->cur = ring->next = 0;
453 ring->cur_encrypt = ring->next_encrypt = 0;
455 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
456 BUS_SPACE_MAXADDR, NULL, NULL, count * RT2560_TX_DESC_SIZE, 1,
457 count * RT2560_TX_DESC_SIZE, 0, NULL, NULL, &ring->desc_dmat);
459 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
463 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
464 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
466 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
470 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
471 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
474 device_printf(sc->sc_dev, "could not load desc DMA map\n");
478 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF,
480 if (ring->data == NULL) {
481 device_printf(sc->sc_dev, "could not allocate soft data\n");
486 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
487 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, RT2560_MAX_SCATTER,
488 MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
490 device_printf(sc->sc_dev, "could not create data DMA tag\n");
494 for (i = 0; i < count; i++) {
495 error = bus_dmamap_create(ring->data_dmat, 0,
498 device_printf(sc->sc_dev, "could not create DMA map\n");
505 fail: rt2560_free_tx_ring(sc, ring);
510 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
512 struct rt2560_tx_desc *desc;
513 struct rt2560_tx_data *data;
516 for (i = 0; i < ring->count; i++) {
517 desc = &ring->desc[i];
518 data = &ring->data[i];
520 if (data->m != NULL) {
521 bus_dmamap_sync(ring->data_dmat, data->map,
522 BUS_DMASYNC_POSTWRITE);
523 bus_dmamap_unload(ring->data_dmat, data->map);
528 if (data->ni != NULL) {
529 ieee80211_free_node(data->ni);
536 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
539 ring->cur = ring->next = 0;
540 ring->cur_encrypt = ring->next_encrypt = 0;
544 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
546 struct rt2560_tx_data *data;
549 if (ring->desc != NULL) {
550 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
551 BUS_DMASYNC_POSTWRITE);
552 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
553 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
556 if (ring->desc_dmat != NULL)
557 bus_dma_tag_destroy(ring->desc_dmat);
559 if (ring->data != NULL) {
560 for (i = 0; i < ring->count; i++) {
561 data = &ring->data[i];
563 if (data->m != NULL) {
564 bus_dmamap_sync(ring->data_dmat, data->map,
565 BUS_DMASYNC_POSTWRITE);
566 bus_dmamap_unload(ring->data_dmat, data->map);
570 if (data->ni != NULL)
571 ieee80211_free_node(data->ni);
573 if (data->map != NULL)
574 bus_dmamap_destroy(ring->data_dmat, data->map);
577 free(ring->data, M_DEVBUF);
580 if (ring->data_dmat != NULL)
581 bus_dma_tag_destroy(ring->data_dmat);
585 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring,
588 struct rt2560_rx_desc *desc;
589 struct rt2560_rx_data *data;
594 ring->cur = ring->next = 0;
595 ring->cur_decrypt = 0;
597 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
598 BUS_SPACE_MAXADDR, NULL, NULL, count * RT2560_RX_DESC_SIZE, 1,
599 count * RT2560_RX_DESC_SIZE, 0, NULL, NULL, &ring->desc_dmat);
601 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
605 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
606 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
608 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
612 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
613 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
616 device_printf(sc->sc_dev, "could not load desc DMA map\n");
620 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF,
622 if (ring->data == NULL) {
623 device_printf(sc->sc_dev, "could not allocate soft data\n");
629 * Pre-allocate Rx buffers and populate Rx ring.
631 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
632 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
633 NULL, &ring->data_dmat);
635 device_printf(sc->sc_dev, "could not create data DMA tag\n");
639 for (i = 0; i < count; i++) {
640 desc = &sc->rxq.desc[i];
641 data = &sc->rxq.data[i];
643 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
645 device_printf(sc->sc_dev, "could not create DMA map\n");
649 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
650 if (data->m == NULL) {
651 device_printf(sc->sc_dev,
652 "could not allocate rx mbuf\n");
657 error = bus_dmamap_load(ring->data_dmat, data->map,
658 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr,
661 device_printf(sc->sc_dev,
662 "could not load rx buf DMA map");
666 desc->flags = htole32(RT2560_RX_BUSY);
667 desc->physaddr = htole32(physaddr);
670 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
674 fail: rt2560_free_rx_ring(sc, ring);
679 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
683 for (i = 0; i < ring->count; i++) {
684 ring->desc[i].flags = htole32(RT2560_RX_BUSY);
685 ring->data[i].drop = 0;
688 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
690 ring->cur = ring->next = 0;
691 ring->cur_decrypt = 0;
695 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
697 struct rt2560_rx_data *data;
700 if (ring->desc != NULL) {
701 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
702 BUS_DMASYNC_POSTWRITE);
703 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
704 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
707 if (ring->desc_dmat != NULL)
708 bus_dma_tag_destroy(ring->desc_dmat);
710 if (ring->data != NULL) {
711 for (i = 0; i < ring->count; i++) {
712 data = &ring->data[i];
714 if (data->m != NULL) {
715 bus_dmamap_sync(ring->data_dmat, data->map,
716 BUS_DMASYNC_POSTREAD);
717 bus_dmamap_unload(ring->data_dmat, data->map);
721 if (data->map != NULL)
722 bus_dmamap_destroy(ring->data_dmat, data->map);
725 free(ring->data, M_DEVBUF);
728 if (ring->data_dmat != NULL)
729 bus_dma_tag_destroy(ring->data_dmat);
732 static struct ieee80211_node *
733 rt2560_node_alloc(struct ieee80211_node_table *nt)
735 struct rt2560_node *rn;
737 rn = malloc(sizeof (struct rt2560_node), M_80211_NODE,
740 return (rn != NULL) ? &rn->ni : NULL;
744 rt2560_media_change(struct ifnet *ifp)
746 struct rt2560_softc *sc = ifp->if_softc;
749 error = ieee80211_media_change(ifp);
750 if (error != ENETRESET)
753 if ((ifp->if_flags & IFF_UP) &&
754 (ifp->if_drv_flags & IFF_DRV_RUNNING))
761 * This function is called periodically (every 200ms) during scanning to
762 * switch from one channel to another.
765 rt2560_next_scan(void *arg)
767 struct rt2560_softc *sc = arg;
768 struct ieee80211com *ic = &sc->sc_ic;
770 if (ic->ic_state == IEEE80211_S_SCAN)
771 ieee80211_next_scan(ic);
775 * This function is called for each node present in the node station table.
778 rt2560_iter_func(void *arg, struct ieee80211_node *ni)
780 struct rt2560_node *rn = (struct rt2560_node *)ni;
782 ral_rssadapt_updatestats(&rn->rssadapt);
786 * This function is called periodically (every 100ms) in RUN state to update
787 * the rate adaptation statistics.
790 rt2560_update_rssadapt(void *arg)
792 struct rt2560_softc *sc = arg;
793 struct ieee80211com *ic = &sc->sc_ic;
797 ieee80211_iterate_nodes(&ic->ic_sta, rt2560_iter_func, arg);
798 callout_reset(&sc->rssadapt_ch, hz / 10, rt2560_update_rssadapt, sc);
804 rt2560_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
806 struct rt2560_softc *sc = ic->ic_ifp->if_softc;
807 enum ieee80211_state ostate;
808 struct ieee80211_node *ni;
812 ostate = ic->ic_state;
813 callout_stop(&sc->scan_ch);
816 case IEEE80211_S_INIT:
817 callout_stop(&sc->rssadapt_ch);
819 if (ostate == IEEE80211_S_RUN) {
820 /* abort TSF synchronization */
821 RAL_WRITE(sc, RT2560_CSR14, 0);
823 /* turn association led off */
824 rt2560_update_led(sc, 0, 0);
828 case IEEE80211_S_SCAN:
829 rt2560_set_chan(sc, ic->ic_curchan);
830 callout_reset(&sc->scan_ch, (sc->dwelltime * hz) / 1000,
831 rt2560_next_scan, sc);
834 case IEEE80211_S_AUTH:
835 rt2560_set_chan(sc, ic->ic_curchan);
838 case IEEE80211_S_ASSOC:
839 rt2560_set_chan(sc, ic->ic_curchan);
842 case IEEE80211_S_RUN:
843 rt2560_set_chan(sc, ic->ic_curchan);
847 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
848 rt2560_update_plcp(sc);
849 rt2560_set_basicrates(sc);
850 rt2560_set_bssid(sc, ni->ni_bssid);
853 if (ic->ic_opmode == IEEE80211_M_HOSTAP ||
854 ic->ic_opmode == IEEE80211_M_IBSS) {
855 m = ieee80211_beacon_alloc(ic, ni, &sc->sc_bo);
857 device_printf(sc->sc_dev,
858 "could not allocate beacon\n");
863 ieee80211_ref_node(ni);
864 error = rt2560_tx_bcn(sc, m, ni);
869 /* turn assocation led on */
870 rt2560_update_led(sc, 1, 0);
872 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
873 callout_reset(&sc->rssadapt_ch, hz / 10,
874 rt2560_update_rssadapt, sc);
876 rt2560_enable_tsf_sync(sc);
881 return (error != 0) ? error : sc->sc_newstate(ic, nstate, arg);
885 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or
889 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr)
895 /* clock C once before the first command */
896 RT2560_EEPROM_CTL(sc, 0);
898 RT2560_EEPROM_CTL(sc, RT2560_S);
899 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
900 RT2560_EEPROM_CTL(sc, RT2560_S);
902 /* write start bit (1) */
903 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
904 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
906 /* write READ opcode (10) */
907 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
908 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
909 RT2560_EEPROM_CTL(sc, RT2560_S);
910 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
912 /* write address (A5-A0 or A7-A0) */
913 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7;
914 for (; n >= 0; n--) {
915 RT2560_EEPROM_CTL(sc, RT2560_S |
916 (((addr >> n) & 1) << RT2560_SHIFT_D));
917 RT2560_EEPROM_CTL(sc, RT2560_S |
918 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C);
921 RT2560_EEPROM_CTL(sc, RT2560_S);
923 /* read data Q15-Q0 */
925 for (n = 15; n >= 0; n--) {
926 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
927 tmp = RAL_READ(sc, RT2560_CSR21);
928 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n;
929 RT2560_EEPROM_CTL(sc, RT2560_S);
932 RT2560_EEPROM_CTL(sc, 0);
934 /* clear Chip Select and clock C */
935 RT2560_EEPROM_CTL(sc, RT2560_S);
936 RT2560_EEPROM_CTL(sc, 0);
937 RT2560_EEPROM_CTL(sc, RT2560_C);
943 * Some frames were processed by the hardware cipher engine and are ready for
947 rt2560_encryption_intr(struct rt2560_softc *sc)
949 struct rt2560_tx_desc *desc;
952 /* retrieve last descriptor index processed by cipher engine */
953 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr;
954 hw /= RT2560_TX_DESC_SIZE;
956 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
957 BUS_DMASYNC_POSTREAD);
959 for (; sc->txq.next_encrypt != hw;) {
960 desc = &sc->txq.desc[sc->txq.next_encrypt];
962 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
963 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY))
966 /* for TKIP, swap eiv field to fix a bug in ASIC */
967 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) ==
968 RT2560_TX_CIPHER_TKIP)
969 desc->eiv = bswap32(desc->eiv);
971 /* mark the frame ready for transmission */
972 desc->flags |= htole32(RT2560_TX_BUSY | RT2560_TX_VALID);
974 DPRINTFN(15, ("encryption done idx=%u\n",
975 sc->txq.next_encrypt));
977 sc->txq.next_encrypt =
978 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT;
981 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
982 BUS_DMASYNC_PREWRITE);
985 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX);
989 rt2560_tx_intr(struct rt2560_softc *sc)
991 struct ieee80211com *ic = &sc->sc_ic;
992 struct ifnet *ifp = ic->ic_ifp;
993 struct rt2560_tx_desc *desc;
994 struct rt2560_tx_data *data;
995 struct rt2560_node *rn;
997 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
998 BUS_DMASYNC_POSTREAD);
1001 desc = &sc->txq.desc[sc->txq.next];
1002 data = &sc->txq.data[sc->txq.next];
1004 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
1005 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY) ||
1006 !(le32toh(desc->flags) & RT2560_TX_VALID))
1009 rn = (struct rt2560_node *)data->ni;
1011 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) {
1012 case RT2560_TX_SUCCESS:
1013 DPRINTFN(10, ("data frame sent successfully\n"));
1014 if (data->id.id_node != NULL) {
1015 ral_rssadapt_raise_rate(ic, &rn->rssadapt,
1021 case RT2560_TX_SUCCESS_RETRY:
1022 DPRINTFN(9, ("data frame sent after %u retries\n",
1023 (le32toh(desc->flags) >> 5) & 0x7));
1027 case RT2560_TX_FAIL_RETRY:
1028 DPRINTFN(9, ("sending data frame failed (too much "
1030 if (data->id.id_node != NULL) {
1031 ral_rssadapt_lower_rate(ic, data->ni,
1032 &rn->rssadapt, &data->id);
1037 case RT2560_TX_FAIL_INVALID:
1038 case RT2560_TX_FAIL_OTHER:
1040 device_printf(sc->sc_dev, "sending data frame failed "
1041 "0x%08x\n", le32toh(desc->flags));
1045 bus_dmamap_sync(sc->txq.data_dmat, data->map,
1046 BUS_DMASYNC_POSTWRITE);
1047 bus_dmamap_unload(sc->txq.data_dmat, data->map);
1050 ieee80211_free_node(data->ni);
1053 /* descriptor is no longer valid */
1054 desc->flags &= ~htole32(RT2560_TX_VALID);
1056 DPRINTFN(15, ("tx done idx=%u\n", sc->txq.next));
1059 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT;
1062 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1063 BUS_DMASYNC_PREWRITE);
1065 sc->sc_tx_timer = 0;
1066 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1071 rt2560_prio_intr(struct rt2560_softc *sc)
1073 struct ieee80211com *ic = &sc->sc_ic;
1074 struct ifnet *ifp = ic->ic_ifp;
1075 struct rt2560_tx_desc *desc;
1076 struct rt2560_tx_data *data;
1078 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1079 BUS_DMASYNC_POSTREAD);
1082 desc = &sc->prioq.desc[sc->prioq.next];
1083 data = &sc->prioq.data[sc->prioq.next];
1085 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
1086 !(le32toh(desc->flags) & RT2560_TX_VALID))
1089 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) {
1090 case RT2560_TX_SUCCESS:
1091 DPRINTFN(10, ("mgt frame sent successfully\n"));
1094 case RT2560_TX_SUCCESS_RETRY:
1095 DPRINTFN(9, ("mgt frame sent after %u retries\n",
1096 (le32toh(desc->flags) >> 5) & 0x7));
1099 case RT2560_TX_FAIL_RETRY:
1100 DPRINTFN(9, ("sending mgt frame failed (too much "
1104 case RT2560_TX_FAIL_INVALID:
1105 case RT2560_TX_FAIL_OTHER:
1107 device_printf(sc->sc_dev, "sending mgt frame failed "
1108 "0x%08x\n", le32toh(desc->flags));
1111 bus_dmamap_sync(sc->prioq.data_dmat, data->map,
1112 BUS_DMASYNC_POSTWRITE);
1113 bus_dmamap_unload(sc->prioq.data_dmat, data->map);
1116 ieee80211_free_node(data->ni);
1119 /* descriptor is no longer valid */
1120 desc->flags &= ~htole32(RT2560_TX_VALID);
1122 DPRINTFN(15, ("prio done idx=%u\n", sc->prioq.next));
1125 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT;
1128 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1129 BUS_DMASYNC_PREWRITE);
1131 sc->sc_tx_timer = 0;
1132 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1137 * Some frames were processed by the hardware cipher engine and are ready for
1138 * transmission to the IEEE802.11 layer.
1141 rt2560_decryption_intr(struct rt2560_softc *sc)
1143 struct ieee80211com *ic = &sc->sc_ic;
1144 struct ifnet *ifp = ic->ic_ifp;
1145 struct rt2560_rx_desc *desc;
1146 struct rt2560_rx_data *data;
1147 bus_addr_t physaddr;
1148 struct ieee80211_frame *wh;
1149 struct ieee80211_node *ni;
1150 struct rt2560_node *rn;
1151 struct mbuf *mnew, *m;
1154 /* retrieve last decriptor index processed by cipher engine */
1155 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr;
1156 hw /= RT2560_RX_DESC_SIZE;
1158 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1159 BUS_DMASYNC_POSTREAD);
1161 for (; sc->rxq.cur_decrypt != hw;) {
1162 desc = &sc->rxq.desc[sc->rxq.cur_decrypt];
1163 data = &sc->rxq.data[sc->rxq.cur_decrypt];
1165 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1166 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1174 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 &&
1175 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) {
1181 * Try to allocate a new mbuf for this ring element and load it
1182 * before processing the current mbuf. If the ring element
1183 * cannot be loaded, drop the received packet and reuse the old
1184 * mbuf. In the unlikely case that the old mbuf can't be
1185 * reloaded either, explicitly panic.
1187 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1193 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1194 BUS_DMASYNC_POSTREAD);
1195 bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1197 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1198 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr,
1203 /* try to reload the old mbuf */
1204 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1205 mtod(data->m, void *), MCLBYTES,
1206 rt2560_dma_map_addr, &physaddr, 0);
1208 /* very unlikely that it will fail... */
1209 panic("%s: could not load old rx mbuf",
1210 device_get_name(sc->sc_dev));
1217 * New mbuf successfully loaded, update Rx ring and continue
1222 desc->physaddr = htole32(physaddr);
1225 m->m_pkthdr.rcvif = ifp;
1226 m->m_pkthdr.len = m->m_len =
1227 (le32toh(desc->flags) >> 16) & 0xfff;
1229 if (sc->sc_drvbpf != NULL) {
1230 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap;
1231 uint32_t tsf_lo, tsf_hi;
1233 /* get timestamp (low and high 32 bits) */
1234 tsf_hi = RAL_READ(sc, RT2560_CSR17);
1235 tsf_lo = RAL_READ(sc, RT2560_CSR16);
1238 htole64(((uint64_t)tsf_hi << 32) | tsf_lo);
1240 tap->wr_rate = rt2560_rxrate(desc);
1241 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
1242 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
1243 tap->wr_antenna = sc->rx_ant;
1244 tap->wr_antsignal = desc->rssi;
1246 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m);
1249 wh = mtod(m, struct ieee80211_frame *);
1250 ni = ieee80211_find_rxnode(ic,
1251 (struct ieee80211_frame_min *)wh);
1253 /* send the frame to the 802.11 layer */
1254 ieee80211_input(ic, m, ni, desc->rssi, 0);
1256 /* give rssi to the rate adatation algorithm */
1257 rn = (struct rt2560_node *)ni;
1258 ral_rssadapt_input(ic, ni, &rn->rssadapt, desc->rssi);
1260 /* node is no longer needed */
1261 ieee80211_free_node(ni);
1263 skip: desc->flags = htole32(RT2560_RX_BUSY);
1265 DPRINTFN(15, ("decryption done idx=%u\n", sc->rxq.cur_decrypt));
1267 sc->rxq.cur_decrypt =
1268 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT;
1271 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1272 BUS_DMASYNC_PREWRITE);
1276 * Some frames were received. Pass them to the hardware cipher engine before
1277 * sending them to the 802.11 layer.
1280 rt2560_rx_intr(struct rt2560_softc *sc)
1282 struct rt2560_rx_desc *desc;
1283 struct rt2560_rx_data *data;
1285 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1286 BUS_DMASYNC_POSTREAD);
1289 desc = &sc->rxq.desc[sc->rxq.cur];
1290 data = &sc->rxq.data[sc->rxq.cur];
1292 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1293 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1298 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) ||
1299 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) {
1301 * This should not happen since we did not request
1302 * to receive those frames when we filled RXCSR0.
1304 DPRINTFN(5, ("PHY or CRC error flags 0x%08x\n",
1305 le32toh(desc->flags)));
1309 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) {
1310 DPRINTFN(5, ("bad length\n"));
1314 /* mark the frame for decryption */
1315 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY);
1317 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1319 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT;
1322 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1323 BUS_DMASYNC_PREWRITE);
1326 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT);
1330 * This function is called periodically in IBSS mode when a new beacon must be
1334 rt2560_beacon_expire(struct rt2560_softc *sc)
1336 struct ieee80211com *ic = &sc->sc_ic;
1337 struct rt2560_tx_data *data;
1339 if (ic->ic_opmode != IEEE80211_M_IBSS &&
1340 ic->ic_opmode != IEEE80211_M_HOSTAP)
1343 data = &sc->bcnq.data[sc->bcnq.next];
1345 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
1346 bus_dmamap_unload(sc->bcnq.data_dmat, data->map);
1348 ieee80211_beacon_update(ic, data->ni, &sc->sc_bo, data->m, 1);
1350 if (ic->ic_rawbpf != NULL)
1351 bpf_mtap(ic->ic_rawbpf, data->m);
1353 rt2560_tx_bcn(sc, data->m, data->ni);
1355 DPRINTFN(15, ("beacon expired\n"));
1357 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT;
1362 rt2560_wakeup_expire(struct rt2560_softc *sc)
1364 DPRINTFN(2, ("wakeup expired\n"));
1368 rt2560_intr(void *arg)
1370 struct rt2560_softc *sc = arg;
1375 /* disable interrupts */
1376 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
1378 r = RAL_READ(sc, RT2560_CSR7);
1379 RAL_WRITE(sc, RT2560_CSR7, r);
1381 if (r & RT2560_BEACON_EXPIRE)
1382 rt2560_beacon_expire(sc);
1384 if (r & RT2560_WAKEUP_EXPIRE)
1385 rt2560_wakeup_expire(sc);
1387 if (r & RT2560_ENCRYPTION_DONE)
1388 rt2560_encryption_intr(sc);
1390 if (r & RT2560_TX_DONE)
1393 if (r & RT2560_PRIO_DONE)
1394 rt2560_prio_intr(sc);
1396 if (r & RT2560_DECRYPTION_DONE)
1397 rt2560_decryption_intr(sc);
1399 if (r & RT2560_RX_DONE)
1402 /* re-enable interrupts */
1403 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
1408 /* quickly determine if a given rate is CCK or OFDM */
1409 #define RAL_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
1411 #define RAL_ACK_SIZE 14 /* 10 + 4(FCS) */
1412 #define RAL_CTS_SIZE 14 /* 10 + 4(FCS) */
1414 #define RAL_SIFS 10 /* us */
1416 #define RT2560_TXRX_TURNAROUND 10 /* us */
1419 * This function is only used by the Rx radiotap code.
1422 rt2560_rxrate(struct rt2560_rx_desc *desc)
1424 if (le32toh(desc->flags) & RT2560_RX_OFDM) {
1425 /* reverse function of rt2560_plcp_signal */
1426 switch (desc->rate) {
1427 case 0xb: return 12;
1428 case 0xf: return 18;
1429 case 0xa: return 24;
1430 case 0xe: return 36;
1431 case 0x9: return 48;
1432 case 0xd: return 72;
1433 case 0x8: return 96;
1434 case 0xc: return 108;
1437 if (desc->rate == 10)
1439 if (desc->rate == 20)
1441 if (desc->rate == 55)
1443 if (desc->rate == 110)
1446 return 2; /* should not get there */
1450 * Return the expected ack rate for a frame transmitted at rate `rate'.
1451 * XXX: this should depend on the destination node basic rate set.
1454 rt2560_ack_rate(struct ieee80211com *ic, int rate)
1463 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate;
1479 /* default to 1Mbps */
1484 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'.
1485 * The function automatically determines the operating mode depending on the
1486 * given rate. `flags' indicates whether short preamble is in use or not.
1489 rt2560_txtime(int len, int rate, uint32_t flags)
1493 if (RAL_RATE_IS_OFDM(rate)) {
1494 /* IEEE Std 802.11a-1999, pp. 37 */
1495 txtime = (8 + 4 * len + 3 + rate - 1) / rate;
1496 txtime = 16 + 4 + 4 * txtime + 6;
1498 /* IEEE Std 802.11b-1999, pp. 28 */
1499 txtime = (16 * len + rate - 1) / rate;
1500 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE))
1510 rt2560_plcp_signal(int rate)
1513 /* CCK rates (returned values are device-dependent) */
1516 case 11: return 0x2;
1517 case 22: return 0x3;
1519 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1520 case 12: return 0xb;
1521 case 18: return 0xf;
1522 case 24: return 0xa;
1523 case 36: return 0xe;
1524 case 48: return 0x9;
1525 case 72: return 0xd;
1526 case 96: return 0x8;
1527 case 108: return 0xc;
1529 /* unsupported rates (should not get there) */
1530 default: return 0xff;
1535 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc,
1536 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr)
1538 struct ieee80211com *ic = &sc->sc_ic;
1539 uint16_t plcp_length;
1542 desc->flags = htole32(flags);
1543 desc->flags |= htole32(len << 16);
1544 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) :
1545 htole32(RT2560_TX_BUSY | RT2560_TX_VALID);
1547 desc->physaddr = htole32(physaddr);
1548 desc->wme = htole16(
1550 RT2560_LOGCWMIN(3) |
1551 RT2560_LOGCWMAX(8));
1553 /* setup PLCP fields */
1554 desc->plcp_signal = rt2560_plcp_signal(rate);
1555 desc->plcp_service = 4;
1557 len += IEEE80211_CRC_LEN;
1558 if (RAL_RATE_IS_OFDM(rate)) {
1559 desc->flags |= htole32(RT2560_TX_OFDM);
1561 plcp_length = len & 0xfff;
1562 desc->plcp_length_hi = plcp_length >> 6;
1563 desc->plcp_length_lo = plcp_length & 0x3f;
1565 plcp_length = (16 * len + rate - 1) / rate;
1567 remainder = (16 * len) % 22;
1568 if (remainder != 0 && remainder < 7)
1569 desc->plcp_service |= RT2560_PLCP_LENGEXT;
1571 desc->plcp_length_hi = plcp_length >> 8;
1572 desc->plcp_length_lo = plcp_length & 0xff;
1574 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1575 desc->plcp_signal |= 0x08;
1580 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0,
1581 struct ieee80211_node *ni)
1583 struct ieee80211com *ic = &sc->sc_ic;
1584 struct rt2560_tx_desc *desc;
1585 struct rt2560_tx_data *data;
1586 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1587 int nsegs, rate, error;
1589 desc = &sc->bcnq.desc[sc->bcnq.cur];
1590 data = &sc->bcnq.data[sc->bcnq.cur];
1592 rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2;
1594 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0,
1595 segs, &nsegs, BUS_DMA_NOWAIT);
1597 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1603 if (sc->sc_drvbpf != NULL) {
1604 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1607 tap->wt_rate = rate;
1608 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1609 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1610 tap->wt_antenna = sc->tx_ant;
1612 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1618 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF |
1619 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr);
1621 DPRINTFN(10, ("sending beacon frame len=%u idx=%u rate=%u\n",
1622 m0->m_pkthdr.len, sc->bcnq.cur, rate));
1624 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1625 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map,
1626 BUS_DMASYNC_PREWRITE);
1628 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT;
1634 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0,
1635 struct ieee80211_node *ni)
1637 struct ieee80211com *ic = &sc->sc_ic;
1638 struct rt2560_tx_desc *desc;
1639 struct rt2560_tx_data *data;
1640 struct ieee80211_frame *wh;
1641 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1644 int nsegs, rate, error;
1646 desc = &sc->prioq.desc[sc->prioq.cur];
1647 data = &sc->prioq.data[sc->prioq.cur];
1649 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1651 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
1654 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1660 if (sc->sc_drvbpf != NULL) {
1661 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1664 tap->wt_rate = rate;
1665 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1666 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1667 tap->wt_antenna = sc->tx_ant;
1669 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1675 wh = mtod(m0, struct ieee80211_frame *);
1677 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1678 flags |= RT2560_TX_ACK;
1680 dur = rt2560_txtime(RAL_ACK_SIZE, rate, ic->ic_flags) +
1682 *(uint16_t *)wh->i_dur = htole16(dur);
1684 /* tell hardware to add timestamp for probe responses */
1685 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
1686 IEEE80211_FC0_TYPE_MGT &&
1687 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) ==
1688 IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1689 flags |= RT2560_TX_TIMESTAMP;
1692 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0,
1695 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1696 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1697 BUS_DMASYNC_PREWRITE);
1699 DPRINTFN(10, ("sending mgt frame len=%u idx=%u rate=%u\n",
1700 m0->m_pkthdr.len, sc->prioq.cur, rate));
1704 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1705 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1711 * Build a RTS control frame.
1713 static struct mbuf *
1714 rt2560_get_rts(struct rt2560_softc *sc, struct ieee80211_frame *wh,
1717 struct ieee80211_frame_rts *rts;
1720 MGETHDR(m, M_DONTWAIT, MT_DATA);
1722 sc->sc_ic.ic_stats.is_tx_nobuf++;
1723 device_printf(sc->sc_dev, "could not allocate RTS frame\n");
1727 rts = mtod(m, struct ieee80211_frame_rts *);
1729 rts->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_CTL |
1730 IEEE80211_FC0_SUBTYPE_RTS;
1731 rts->i_fc[1] = IEEE80211_FC1_DIR_NODS;
1732 *(uint16_t *)rts->i_dur = htole16(dur);
1733 IEEE80211_ADDR_COPY(rts->i_ra, wh->i_addr1);
1734 IEEE80211_ADDR_COPY(rts->i_ta, wh->i_addr2);
1736 m->m_pkthdr.len = m->m_len = sizeof (struct ieee80211_frame_rts);
1742 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0,
1743 struct ieee80211_node *ni)
1745 struct ieee80211com *ic = &sc->sc_ic;
1746 struct rt2560_tx_desc *desc;
1747 struct rt2560_tx_data *data;
1748 struct rt2560_node *rn;
1749 struct ieee80211_rateset *rs;
1750 struct ieee80211_frame *wh;
1751 struct ieee80211_key *k;
1753 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1756 int nsegs, rate, error;
1758 wh = mtod(m0, struct ieee80211_frame *);
1760 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
1761 rs = &ic->ic_sup_rates[ic->ic_curmode];
1762 rate = rs->rs_rates[ic->ic_fixed_rate];
1765 rn = (struct rt2560_node *)ni;
1766 ni->ni_txrate = ral_rssadapt_choose(&rn->rssadapt, rs, wh,
1767 m0->m_pkthdr.len, NULL, 0);
1768 rate = rs->rs_rates[ni->ni_txrate];
1770 rate &= IEEE80211_RATE_VAL;
1772 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1773 k = ieee80211_crypto_encap(ic, ni, m0);
1779 /* packet header may have moved, reset our local pointer */
1780 wh = mtod(m0, struct ieee80211_frame *);
1784 * IEEE Std 802.11-1999, pp 82: "A STA shall use an RTS/CTS exchange
1785 * for directed frames only when the length of the MPDU is greater
1786 * than the length threshold indicated by [...]" ic_rtsthreshold.
1788 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) &&
1789 m0->m_pkthdr.len > ic->ic_rtsthreshold) {
1792 int rtsrate, ackrate;
1794 rtsrate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1795 ackrate = rt2560_ack_rate(ic, rate);
1797 dur = rt2560_txtime(m0->m_pkthdr.len + 4, rate, ic->ic_flags) +
1798 rt2560_txtime(RAL_CTS_SIZE, rtsrate, ic->ic_flags) +
1799 rt2560_txtime(RAL_ACK_SIZE, ackrate, ic->ic_flags) +
1802 m = rt2560_get_rts(sc, wh, dur);
1804 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1805 data = &sc->txq.data[sc->txq.cur_encrypt];
1807 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
1808 m, segs, &nsegs, 0);
1810 device_printf(sc->sc_dev,
1811 "could not map mbuf (error %d)\n", error);
1817 /* avoid multiple free() of the same node for each fragment */
1818 ieee80211_ref_node(ni);
1823 /* RTS frames are not taken into account for rssadapt */
1824 data->id.id_node = NULL;
1826 rt2560_setup_tx_desc(sc, desc, RT2560_TX_ACK |
1827 RT2560_TX_MORE_FRAG, m->m_pkthdr.len, rtsrate, 1,
1830 bus_dmamap_sync(sc->txq.data_dmat, data->map,
1831 BUS_DMASYNC_PREWRITE);
1834 sc->txq.cur_encrypt =
1835 (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1838 * IEEE Std 802.11-1999: when an RTS/CTS exchange is used, the
1839 * asynchronous data frame shall be transmitted after the CTS
1840 * frame and a SIFS period.
1842 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS;
1845 data = &sc->txq.data[sc->txq.cur_encrypt];
1846 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1848 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0,
1850 if (error != 0 && error != EFBIG) {
1851 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1857 mnew = m_defrag(m0, M_DONTWAIT);
1859 device_printf(sc->sc_dev,
1860 "could not defragment mbuf\n");
1866 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
1867 m0, segs, &nsegs, 0);
1869 device_printf(sc->sc_dev,
1870 "could not map mbuf (error %d)\n", error);
1875 /* packet header may have moved, reset our local pointer */
1876 wh = mtod(m0, struct ieee80211_frame *);
1879 if (sc->sc_drvbpf != NULL) {
1880 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1883 tap->wt_rate = rate;
1884 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1885 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1886 tap->wt_antenna = sc->tx_ant;
1888 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1894 /* remember link conditions for rate adaptation algorithm */
1895 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) {
1896 data->id.id_len = m0->m_pkthdr.len;
1897 data->id.id_rateidx = ni->ni_txrate;
1898 data->id.id_node = ni;
1899 data->id.id_rssi = ni->ni_rssi;
1901 data->id.id_node = NULL;
1903 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1904 flags |= RT2560_TX_ACK;
1906 dur = rt2560_txtime(RAL_ACK_SIZE, rt2560_ack_rate(ic, rate),
1907 ic->ic_flags) + RAL_SIFS;
1908 *(uint16_t *)wh->i_dur = htole16(dur);
1911 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1,
1914 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1915 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1916 BUS_DMASYNC_PREWRITE);
1918 DPRINTFN(10, ("sending data frame len=%u idx=%u rate=%u\n",
1919 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate));
1923 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1924 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT);
1930 rt2560_start(struct ifnet *ifp)
1932 struct rt2560_softc *sc = ifp->if_softc;
1933 struct ieee80211com *ic = &sc->sc_ic;
1935 struct ether_header *eh;
1936 struct ieee80211_node *ni;
1941 IF_POLL(&ic->ic_mgtq, m0);
1943 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) {
1944 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1947 IF_DEQUEUE(&ic->ic_mgtq, m0);
1949 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif;
1950 m0->m_pkthdr.rcvif = NULL;
1952 if (ic->ic_rawbpf != NULL)
1953 bpf_mtap(ic->ic_rawbpf, m0);
1955 if (rt2560_tx_mgt(sc, m0, ni) != 0)
1959 if (ic->ic_state != IEEE80211_S_RUN)
1961 IFQ_DRV_DEQUEUE(&ifp->if_snd, m0);
1964 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) {
1965 IFQ_DRV_PREPEND(&ifp->if_snd, m0);
1966 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1970 if (m0->m_len < sizeof (struct ether_header) &&
1971 !(m0 = m_pullup(m0, sizeof (struct ether_header))))
1974 eh = mtod(m0, struct ether_header *);
1975 ni = ieee80211_find_txnode(ic, eh->ether_dhost);
1982 m0 = ieee80211_encap(ic, m0, ni);
1984 ieee80211_free_node(ni);
1988 if (ic->ic_rawbpf != NULL)
1989 bpf_mtap(ic->ic_rawbpf, m0);
1991 if (rt2560_tx_data(sc, m0, ni) != 0) {
1992 ieee80211_free_node(ni);
1998 sc->sc_tx_timer = 5;
2006 rt2560_watchdog(struct ifnet *ifp)
2008 struct rt2560_softc *sc = ifp->if_softc;
2009 struct ieee80211com *ic = &sc->sc_ic;
2015 if (sc->sc_tx_timer > 0) {
2016 if (--sc->sc_tx_timer == 0) {
2017 device_printf(sc->sc_dev, "device timeout\n");
2026 ieee80211_watchdog(ic);
2032 * This function allows for fast channel switching in monitor mode (used by
2033 * net-mgmt/kismet). In IBSS mode, we must explicitly reset the interface to
2034 * generate a new beacon frame.
2037 rt2560_reset(struct ifnet *ifp)
2039 struct rt2560_softc *sc = ifp->if_softc;
2040 struct ieee80211com *ic = &sc->sc_ic;
2042 if (ic->ic_opmode != IEEE80211_M_MONITOR)
2045 rt2560_set_chan(sc, ic->ic_curchan);
2051 rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
2053 struct rt2560_softc *sc = ifp->if_softc;
2054 struct ieee80211com *ic = &sc->sc_ic;
2061 if (ifp->if_flags & IFF_UP) {
2062 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2063 rt2560_update_promisc(sc);
2067 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2073 error = ieee80211_ioctl(ic, cmd, data);
2076 if (error == ENETRESET) {
2077 if ((ifp->if_flags & IFF_UP) &&
2078 (ifp->if_drv_flags & IFF_DRV_RUNNING) &&
2079 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL))
2090 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val)
2095 for (ntries = 0; ntries < 100; ntries++) {
2096 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY))
2100 if (ntries == 100) {
2101 device_printf(sc->sc_dev, "could not write to BBP\n");
2105 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val;
2106 RAL_WRITE(sc, RT2560_BBPCSR, tmp);
2108 DPRINTFN(15, ("BBP R%u <- 0x%02x\n", reg, val));
2112 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg)
2117 val = RT2560_BBP_BUSY | reg << 8;
2118 RAL_WRITE(sc, RT2560_BBPCSR, val);
2120 for (ntries = 0; ntries < 100; ntries++) {
2121 val = RAL_READ(sc, RT2560_BBPCSR);
2122 if (!(val & RT2560_BBP_BUSY))
2127 device_printf(sc->sc_dev, "could not read from BBP\n");
2132 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val)
2137 for (ntries = 0; ntries < 100; ntries++) {
2138 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY))
2142 if (ntries == 100) {
2143 device_printf(sc->sc_dev, "could not write to RF\n");
2147 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 |
2149 RAL_WRITE(sc, RT2560_RFCSR, tmp);
2151 /* remember last written value in sc */
2152 sc->rf_regs[reg] = val;
2154 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff));
2158 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c)
2160 struct ieee80211com *ic = &sc->sc_ic;
2164 chan = ieee80211_chan2ieee(ic, c);
2165 if (chan == 0 || chan == IEEE80211_CHAN_ANY)
2168 if (IEEE80211_IS_CHAN_2GHZ(c))
2169 power = min(sc->txpow[chan - 1], 31);
2173 /* adjust txpower using ifconfig settings */
2174 power -= (100 - ic->ic_txpowlimit) / 8;
2176 DPRINTFN(2, ("setting channel to %u, txpower to %u\n", chan, power));
2178 switch (sc->rf_rev) {
2179 case RT2560_RF_2522:
2180 rt2560_rf_write(sc, RAL_RF1, 0x00814);
2181 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]);
2182 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2185 case RT2560_RF_2523:
2186 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2187 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]);
2188 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044);
2189 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2192 case RT2560_RF_2524:
2193 rt2560_rf_write(sc, RAL_RF1, 0x0c808);
2194 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]);
2195 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2196 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2199 case RT2560_RF_2525:
2200 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2201 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]);
2202 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2203 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2205 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2206 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]);
2207 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2208 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2211 case RT2560_RF_2525E:
2212 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2213 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]);
2214 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2215 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282);
2218 case RT2560_RF_2526:
2219 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]);
2220 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2221 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2223 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]);
2224 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2225 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2229 case RT2560_RF_5222:
2230 for (i = 0; rt2560_rf5222[i].chan != chan; i++);
2232 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1);
2233 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2);
2234 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2235 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4);
2239 if (ic->ic_state != IEEE80211_S_SCAN) {
2240 /* set Japan filter bit for channel 14 */
2241 tmp = rt2560_bbp_read(sc, 70);
2243 tmp &= ~RT2560_JAPAN_FILTER;
2245 tmp |= RT2560_JAPAN_FILTER;
2247 rt2560_bbp_write(sc, 70, tmp);
2249 /* clear CRC errors */
2250 RAL_READ(sc, RT2560_CNT0);
2256 * Disable RF auto-tuning.
2259 rt2560_disable_rf_tune(struct rt2560_softc *sc)
2263 if (sc->rf_rev != RT2560_RF_2523) {
2264 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE;
2265 rt2560_rf_write(sc, RAL_RF1, tmp);
2268 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE;
2269 rt2560_rf_write(sc, RAL_RF3, tmp);
2271 DPRINTFN(2, ("disabling RF autotune\n"));
2276 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF
2280 rt2560_enable_tsf_sync(struct rt2560_softc *sc)
2282 struct ieee80211com *ic = &sc->sc_ic;
2283 uint16_t logcwmin, preload;
2286 /* first, disable TSF synchronization */
2287 RAL_WRITE(sc, RT2560_CSR14, 0);
2289 tmp = 16 * ic->ic_bss->ni_intval;
2290 RAL_WRITE(sc, RT2560_CSR12, tmp);
2292 RAL_WRITE(sc, RT2560_CSR13, 0);
2295 preload = (ic->ic_opmode == IEEE80211_M_STA) ? 384 : 1024;
2296 tmp = logcwmin << 16 | preload;
2297 RAL_WRITE(sc, RT2560_BCNOCSR, tmp);
2299 /* finally, enable TSF synchronization */
2300 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN;
2301 if (ic->ic_opmode == IEEE80211_M_STA)
2302 tmp |= RT2560_ENABLE_TSF_SYNC(1);
2304 tmp |= RT2560_ENABLE_TSF_SYNC(2) |
2305 RT2560_ENABLE_BEACON_GENERATOR;
2306 RAL_WRITE(sc, RT2560_CSR14, tmp);
2308 DPRINTF(("enabling TSF synchronization\n"));
2312 rt2560_update_plcp(struct rt2560_softc *sc)
2314 struct ieee80211com *ic = &sc->sc_ic;
2316 /* no short preamble for 1Mbps */
2317 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400);
2319 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) {
2320 /* values taken from the reference driver */
2321 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401);
2322 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402);
2323 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403);
2325 /* same values as above or'ed 0x8 */
2326 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409);
2327 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a);
2328 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b);
2331 DPRINTF(("updating PLCP for %s preamble\n",
2332 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"));
2336 * This function can be called by ieee80211_set_shortslottime(). Refer to
2337 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed.
2340 rt2560_update_slot(struct ifnet *ifp)
2342 struct rt2560_softc *sc = ifp->if_softc;
2343 struct ieee80211com *ic = &sc->sc_ic;
2345 uint16_t tx_sifs, tx_pifs, tx_difs, eifs;
2348 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
2350 /* update the MAC slot boundaries */
2351 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND;
2352 tx_pifs = tx_sifs + slottime;
2353 tx_difs = tx_sifs + 2 * slottime;
2354 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60;
2356 tmp = RAL_READ(sc, RT2560_CSR11);
2357 tmp = (tmp & ~0x1f00) | slottime << 8;
2358 RAL_WRITE(sc, RT2560_CSR11, tmp);
2360 tmp = tx_pifs << 16 | tx_sifs;
2361 RAL_WRITE(sc, RT2560_CSR18, tmp);
2363 tmp = eifs << 16 | tx_difs;
2364 RAL_WRITE(sc, RT2560_CSR19, tmp);
2366 DPRINTF(("setting slottime to %uus\n", slottime));
2370 rt2560_set_basicrates(struct rt2560_softc *sc)
2372 struct ieee80211com *ic = &sc->sc_ic;
2374 /* update basic rate set */
2375 if (ic->ic_curmode == IEEE80211_MODE_11B) {
2376 /* 11b basic rates: 1, 2Mbps */
2377 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3);
2378 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) {
2379 /* 11a basic rates: 6, 12, 24Mbps */
2380 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150);
2382 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */
2383 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f);
2388 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2)
2392 /* set ON period to 70ms and OFF period to 30ms */
2393 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30;
2394 RAL_WRITE(sc, RT2560_LEDCSR, tmp);
2398 rt2560_set_bssid(struct rt2560_softc *sc, uint8_t *bssid)
2402 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
2403 RAL_WRITE(sc, RT2560_CSR5, tmp);
2405 tmp = bssid[4] | bssid[5] << 8;
2406 RAL_WRITE(sc, RT2560_CSR6, tmp);
2408 DPRINTF(("setting BSSID to %6D\n", bssid, ":"));
2412 rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2416 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
2417 RAL_WRITE(sc, RT2560_CSR3, tmp);
2419 tmp = addr[4] | addr[5] << 8;
2420 RAL_WRITE(sc, RT2560_CSR4, tmp);
2422 DPRINTF(("setting MAC address to %6D\n", addr, ":"));
2426 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2430 tmp = RAL_READ(sc, RT2560_CSR3);
2431 addr[0] = tmp & 0xff;
2432 addr[1] = (tmp >> 8) & 0xff;
2433 addr[2] = (tmp >> 16) & 0xff;
2434 addr[3] = (tmp >> 24);
2436 tmp = RAL_READ(sc, RT2560_CSR4);
2437 addr[4] = tmp & 0xff;
2438 addr[5] = (tmp >> 8) & 0xff;
2442 rt2560_update_promisc(struct rt2560_softc *sc)
2444 struct ifnet *ifp = sc->sc_ic.ic_ifp;
2447 tmp = RAL_READ(sc, RT2560_RXCSR0);
2449 tmp &= ~RT2560_DROP_NOT_TO_ME;
2450 if (!(ifp->if_flags & IFF_PROMISC))
2451 tmp |= RT2560_DROP_NOT_TO_ME;
2453 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2455 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
2456 "entering" : "leaving"));
2460 rt2560_get_rf(int rev)
2463 case RT2560_RF_2522: return "RT2522";
2464 case RT2560_RF_2523: return "RT2523";
2465 case RT2560_RF_2524: return "RT2524";
2466 case RT2560_RF_2525: return "RT2525";
2467 case RT2560_RF_2525E: return "RT2525e";
2468 case RT2560_RF_2526: return "RT2526";
2469 case RT2560_RF_5222: return "RT5222";
2470 default: return "unknown";
2475 rt2560_read_eeprom(struct rt2560_softc *sc)
2480 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0);
2481 sc->rf_rev = (val >> 11) & 0x7;
2482 sc->hw_radio = (val >> 10) & 0x1;
2483 sc->led_mode = (val >> 6) & 0x7;
2484 sc->rx_ant = (val >> 4) & 0x3;
2485 sc->tx_ant = (val >> 2) & 0x3;
2486 sc->nb_ant = val & 0x3;
2488 /* read default values for BBP registers */
2489 for (i = 0; i < 16; i++) {
2490 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i);
2491 sc->bbp_prom[i].reg = val >> 8;
2492 sc->bbp_prom[i].val = val & 0xff;
2495 /* read Tx power for all b/g channels */
2496 for (i = 0; i < 14 / 2; i++) {
2497 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i);
2498 sc->txpow[i * 2] = val >> 8;
2499 sc->txpow[i * 2 + 1] = val & 0xff;
2504 rt2560_bbp_init(struct rt2560_softc *sc)
2506 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2509 /* wait for BBP to be ready */
2510 for (ntries = 0; ntries < 100; ntries++) {
2511 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0)
2515 if (ntries == 100) {
2516 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
2520 /* initialize BBP registers to default values */
2521 for (i = 0; i < N(rt2560_def_bbp); i++) {
2522 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg,
2523 rt2560_def_bbp[i].val);
2526 /* initialize BBP registers to values stored in EEPROM */
2527 for (i = 0; i < 16; i++) {
2528 if (sc->bbp_prom[i].reg == 0xff)
2530 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
2539 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna)
2544 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK;
2546 tx |= RT2560_BBP_ANTA;
2547 else if (antenna == 2)
2548 tx |= RT2560_BBP_ANTB;
2550 tx |= RT2560_BBP_DIVERSITY;
2552 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */
2553 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 ||
2554 sc->rf_rev == RT2560_RF_5222)
2555 tx |= RT2560_BBP_FLIPIQ;
2557 rt2560_bbp_write(sc, RT2560_BBP_TX, tx);
2559 /* update values for CCK and OFDM in BBPCSR1 */
2560 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007;
2561 tmp |= (tx & 0x7) << 16 | (tx & 0x7);
2562 RAL_WRITE(sc, RT2560_BBPCSR1, tmp);
2566 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna)
2570 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK;
2572 rx |= RT2560_BBP_ANTA;
2573 else if (antenna == 2)
2574 rx |= RT2560_BBP_ANTB;
2576 rx |= RT2560_BBP_DIVERSITY;
2578 /* need to force no I/Q flip for RF 2525e and 2526 */
2579 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526)
2580 rx &= ~RT2560_BBP_FLIPIQ;
2582 rt2560_bbp_write(sc, RT2560_BBP_RX, rx);
2586 rt2560_init(void *priv)
2588 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2589 struct rt2560_softc *sc = priv;
2590 struct ieee80211com *ic = &sc->sc_ic;
2591 struct ifnet *ifp = ic->ic_ifp;
2597 /* setup tx rings */
2598 tmp = RT2560_PRIO_RING_COUNT << 24 |
2599 RT2560_ATIM_RING_COUNT << 16 |
2600 RT2560_TX_RING_COUNT << 8 |
2601 RT2560_TX_DESC_SIZE;
2603 /* rings must be initialized in this exact order */
2604 RAL_WRITE(sc, RT2560_TXCSR2, tmp);
2605 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr);
2606 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr);
2607 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr);
2608 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr);
2611 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE;
2613 RAL_WRITE(sc, RT2560_RXCSR1, tmp);
2614 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr);
2616 /* initialize MAC registers to default values */
2617 for (i = 0; i < N(rt2560_def_mac); i++)
2618 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val);
2620 IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp));
2621 rt2560_set_macaddr(sc, ic->ic_myaddr);
2623 /* set basic rate set (will be updated later) */
2624 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153);
2626 rt2560_set_txantenna(sc, sc->tx_ant);
2627 rt2560_set_rxantenna(sc, sc->rx_ant);
2628 rt2560_update_slot(ifp);
2629 rt2560_update_plcp(sc);
2630 rt2560_update_led(sc, 0, 0);
2632 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2633 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY);
2635 if (rt2560_bbp_init(sc) != 0) {
2640 /* set default BSS channel */
2641 rt2560_set_chan(sc, ic->ic_curchan);
2644 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR;
2645 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2646 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR;
2647 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2648 tmp |= RT2560_DROP_TODS;
2649 if (!(ifp->if_flags & IFF_PROMISC))
2650 tmp |= RT2560_DROP_NOT_TO_ME;
2652 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2654 /* clear old FCS and Rx FIFO errors */
2655 RAL_READ(sc, RT2560_CNT0);
2656 RAL_READ(sc, RT2560_CNT4);
2658 /* clear any pending interrupts */
2659 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff);
2661 /* enable interrupts */
2662 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
2664 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2665 ifp->if_drv_flags |= IFF_DRV_RUNNING;
2667 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2668 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
2669 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
2671 ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
2676 rt2560_stop(void *priv)
2678 struct rt2560_softc *sc = priv;
2679 struct ieee80211com *ic = &sc->sc_ic;
2680 struct ifnet *ifp = ic->ic_ifp;
2682 ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
2684 sc->sc_tx_timer = 0;
2686 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2689 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX);
2692 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX);
2694 /* reset ASIC (imply reset BBP) */
2695 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2696 RAL_WRITE(sc, RT2560_CSR1, 0);
2698 /* disable interrupts */
2699 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
2701 /* reset Tx and Rx rings */
2702 rt2560_reset_tx_ring(sc, &sc->txq);
2703 rt2560_reset_tx_ring(sc, &sc->atimq);
2704 rt2560_reset_tx_ring(sc, &sc->prioq);
2705 rt2560_reset_tx_ring(sc, &sc->bcnq);
2706 rt2560_reset_rx_ring(sc, &sc->rxq);