2 * Copyright (c) 2005, 2006
3 * Damien Bergamini <damien.bergamini@free.fr>
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 * $FreeBSD: src/sys/dev/ral/rt2560.c,v 1.3 2006/03/21 21:15:43 damien Exp $
18 * $DragonFly: src/sys/dev/netif/ral/rt2560.c,v 1.4 2006/11/16 12:22:49 sephe Exp $
22 * Ralink Technology RT2560 chipset driver
23 * http://www.ralinktech.com/
26 #include <sys/param.h>
28 #include <sys/endian.h>
29 #include <sys/kernel.h>
30 #include <sys/malloc.h>
32 #include <sys/module.h>
34 #include <sys/socket.h>
35 #include <sys/sockio.h>
36 #include <sys/sysctl.h>
37 #include <sys/serialize.h>
41 #include <net/if_arp.h>
42 #include <net/ethernet.h>
43 #include <net/if_dl.h>
44 #include <net/if_media.h>
45 #include <net/ifq_var.h>
47 #include <netproto/802_11/ieee80211_var.h>
48 #include <netproto/802_11/ieee80211_radiotap.h>
50 #include <dev/netif/ral/if_ralrate.h>
51 #include <dev/netif/ral/rt2560reg.h>
52 #include <dev/netif/ral/rt2560var.h>
55 #define DPRINTF(x) do { if (ral_debug > 0) printf x; } while (0)
56 #define DPRINTFN(n, x) do { if (ral_debug >= (n)) printf x; } while (0)
60 #define DPRINTFN(n, x)
63 static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int,
65 static void rt2560_dma_map_mbuf(void *, bus_dma_segment_t *, int,
67 static int rt2560_alloc_tx_ring(struct rt2560_softc *,
68 struct rt2560_tx_ring *, int);
69 static void rt2560_reset_tx_ring(struct rt2560_softc *,
70 struct rt2560_tx_ring *);
71 static void rt2560_free_tx_ring(struct rt2560_softc *,
72 struct rt2560_tx_ring *);
73 static int rt2560_alloc_rx_ring(struct rt2560_softc *,
74 struct rt2560_rx_ring *, int);
75 static void rt2560_reset_rx_ring(struct rt2560_softc *,
76 struct rt2560_rx_ring *);
77 static void rt2560_free_rx_ring(struct rt2560_softc *,
78 struct rt2560_rx_ring *);
79 static struct ieee80211_node *rt2560_node_alloc(
80 struct ieee80211_node_table *);
81 static int rt2560_media_change(struct ifnet *);
82 static void rt2560_next_scan(void *);
83 static void rt2560_iter_func(void *, struct ieee80211_node *);
84 static void rt2560_update_rssadapt(void *);
85 static int rt2560_newstate(struct ieee80211com *,
86 enum ieee80211_state, int);
87 static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t);
88 static void rt2560_encryption_intr(struct rt2560_softc *);
89 static void rt2560_tx_intr(struct rt2560_softc *);
90 static void rt2560_prio_intr(struct rt2560_softc *);
91 static void rt2560_decryption_intr(struct rt2560_softc *);
92 static void rt2560_rx_intr(struct rt2560_softc *);
93 static void rt2560_beacon_expire(struct rt2560_softc *);
94 static void rt2560_wakeup_expire(struct rt2560_softc *);
95 static uint8_t rt2560_rxrate(struct rt2560_rx_desc *);
96 static int rt2560_ack_rate(struct ieee80211com *, int);
97 static uint16_t rt2560_txtime(int, int, uint32_t);
98 static uint8_t rt2560_plcp_signal(int);
99 static void rt2560_setup_tx_desc(struct rt2560_softc *,
100 struct rt2560_tx_desc *, uint32_t, int, int, int,
102 static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *,
103 struct ieee80211_node *);
104 static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *,
105 struct ieee80211_node *);
106 static struct mbuf *rt2560_get_rts(struct rt2560_softc *,
107 struct ieee80211_frame *, uint16_t);
108 static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *,
109 struct ieee80211_node *);
110 static void rt2560_start(struct ifnet *);
111 static void rt2560_watchdog(struct ifnet *);
112 static int rt2560_reset(struct ifnet *);
113 static int rt2560_ioctl(struct ifnet *, u_long, caddr_t,
115 static void rt2560_bbp_write(struct rt2560_softc *, uint8_t,
117 static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t);
118 static void rt2560_rf_write(struct rt2560_softc *, uint8_t,
120 static void rt2560_set_chan(struct rt2560_softc *,
121 struct ieee80211_channel *);
123 static void rt2560_disable_rf_tune(struct rt2560_softc *);
125 static void rt2560_enable_tsf_sync(struct rt2560_softc *);
126 static void rt2560_update_plcp(struct rt2560_softc *);
127 static void rt2560_update_slot(struct ifnet *);
128 static void rt2560_set_basicrates(struct rt2560_softc *);
129 static void rt2560_update_led(struct rt2560_softc *, int, int);
130 static void rt2560_set_bssid(struct rt2560_softc *, uint8_t *);
131 static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *);
132 static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *);
133 static void rt2560_update_promisc(struct rt2560_softc *);
134 static const char *rt2560_get_rf(int);
135 static void rt2560_read_eeprom(struct rt2560_softc *);
136 static int rt2560_bbp_init(struct rt2560_softc *);
137 static void rt2560_set_txantenna(struct rt2560_softc *, int);
138 static void rt2560_set_rxantenna(struct rt2560_softc *, int);
139 static void rt2560_init(void *);
140 static void rt2560_stop(void *);
141 static void rt2560_intr(void *);
144 * Supported rates for 802.11a/b/g modes (in 500Kbps unit).
146 static const struct ieee80211_rateset rt2560_rateset_11a =
147 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } };
149 static const struct ieee80211_rateset rt2560_rateset_11b =
150 { 4, { 2, 4, 11, 22 } };
152 static const struct ieee80211_rateset rt2560_rateset_11g =
153 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } };
155 static const struct {
158 } rt2560_def_mac[] = {
162 static const struct {
165 } rt2560_def_bbp[] = {
169 static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2;
170 static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2;
171 static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2;
172 static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2;
173 static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2;
174 static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2;
175 static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2;
176 static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2;
178 static const struct {
181 } rt2560_rf5222[] = {
186 rt2560_attach(device_t dev, int id)
188 struct rt2560_softc *sc = device_get_softc(dev);
189 struct ieee80211com *ic = &sc->sc_ic;
190 struct ifnet *ifp = &ic->ic_if;
193 callout_init(&sc->scan_ch);
194 callout_init(&sc->rssadapt_ch);
197 sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->sc_irq_rid,
198 RF_ACTIVE | RF_SHAREABLE);
199 if (sc->sc_irq == NULL) {
200 device_printf(dev, "could not allocate interrupt resource\n");
204 /* retrieve RT2560 rev. no */
205 sc->asic_rev = RAL_READ(sc, RT2560_CSR0);
207 /* retrieve MAC address */
208 rt2560_get_macaddr(sc, ic->ic_myaddr);
210 /* retrieve RF rev. no and various other things from EEPROM */
211 rt2560_read_eeprom(sc);
213 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n",
214 sc->asic_rev, rt2560_get_rf(sc->rf_rev));
217 * Allocate Tx and Rx rings.
219 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT);
221 device_printf(sc->sc_dev, "could not allocate Tx ring\n");
225 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT);
227 device_printf(sc->sc_dev, "could not allocate ATIM ring\n");
231 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT);
233 device_printf(sc->sc_dev, "could not allocate Prio ring\n");
237 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT);
239 device_printf(sc->sc_dev, "could not allocate Beacon ring\n");
243 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT);
245 device_printf(sc->sc_dev, "could not allocate Rx ring\n");
249 sysctl_ctx_init(&sc->sysctl_ctx);
250 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
251 SYSCTL_STATIC_CHILDREN(_hw),
253 device_get_nameunit(dev),
255 if (sc->sysctl_tree == NULL) {
256 device_printf(dev, "could not add sysctl node\n");
262 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
263 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
264 ifp->if_init = rt2560_init;
265 ifp->if_ioctl = rt2560_ioctl;
266 ifp->if_start = rt2560_start;
267 ifp->if_watchdog = rt2560_watchdog;
268 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
269 ifq_set_ready(&ifp->if_snd);
271 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
272 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */
273 ic->ic_state = IEEE80211_S_INIT;
275 /* set device capabilities */
277 IEEE80211_C_IBSS | /* IBSS mode supported */
278 IEEE80211_C_MONITOR | /* monitor mode supported */
279 IEEE80211_C_HOSTAP | /* HostAp mode supported */
280 IEEE80211_C_TXPMGT | /* tx power management */
281 IEEE80211_C_SHPREAMBLE | /* short preamble supported */
282 IEEE80211_C_SHSLOT | /* short slot time supported */
283 IEEE80211_C_WEP | /* WEP */
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 bpfattach_dlt(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(&sc->sysctl_ctx,
350 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
351 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)");
353 SYSCTL_ADD_INT(&sc->sysctl_ctx,
354 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
355 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)");
357 SYSCTL_ADD_INT(&sc->sysctl_ctx,
358 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "dwell",
359 CTLFLAG_RW, &sc->dwelltime, 0,
360 "channel dwell time (ms) for AP/station scanning");
362 error = bus_setup_intr(dev, sc->sc_irq, INTR_MPSAFE, rt2560_intr,
363 sc, &sc->sc_ih, ifp->if_serializer);
365 device_printf(dev, "could not set up interrupt\n");
367 ieee80211_ifdetach(ic);
372 ieee80211_announce(ic);
380 rt2560_detach(void *xsc)
382 struct rt2560_softc *sc = xsc;
383 struct ieee80211com *ic = &sc->sc_ic;
384 struct ifnet *ifp = ic->ic_ifp;
386 if (device_is_attached(sc->sc_dev)) {
387 lwkt_serialize_enter(ifp->if_serializer);
389 callout_stop(&sc->scan_ch);
390 callout_stop(&sc->rssadapt_ch);
393 bus_teardown_intr(sc->sc_dev, sc->sc_irq, sc->sc_ih);
395 lwkt_serialize_exit(ifp->if_serializer);
398 ieee80211_ifdetach(ic);
401 rt2560_free_tx_ring(sc, &sc->txq);
402 rt2560_free_tx_ring(sc, &sc->atimq);
403 rt2560_free_tx_ring(sc, &sc->prioq);
404 rt2560_free_tx_ring(sc, &sc->bcnq);
405 rt2560_free_rx_ring(sc, &sc->rxq);
407 if (sc->sc_irq != NULL) {
408 bus_release_resource(sc->sc_dev, SYS_RES_IRQ, sc->sc_irq_rid,
412 if (sc->sysctl_tree != NULL)
413 sysctl_ctx_free(&sc->sysctl_ctx);
419 rt2560_shutdown(void *xsc)
421 struct rt2560_softc *sc = xsc;
422 struct ifnet *ifp = &sc->sc_ic.ic_if;
424 lwkt_serialize_enter(ifp->if_serializer);
426 lwkt_serialize_exit(ifp->if_serializer);
430 rt2560_suspend(void *xsc)
432 struct rt2560_softc *sc = xsc;
433 struct ifnet *ifp = &sc->sc_ic.ic_if;
435 lwkt_serialize_enter(ifp->if_serializer);
437 lwkt_serialize_exit(ifp->if_serializer);
441 rt2560_resume(void *xsc)
443 struct rt2560_softc *sc = xsc;
444 struct ifnet *ifp = sc->sc_ic.ic_ifp;
446 lwkt_serialize_enter(ifp->if_serializer);
447 if (ifp->if_flags & IFF_UP) {
448 ifp->if_init(ifp->if_softc);
449 if (ifp->if_flags & IFF_RUNNING)
452 lwkt_serialize_exit(ifp->if_serializer);
456 rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
461 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
463 *(bus_addr_t *)arg = segs[0].ds_addr;
467 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring,
474 ring->cur = ring->next = 0;
475 ring->cur_encrypt = ring->next_encrypt = 0;
477 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
478 BUS_SPACE_MAXADDR, NULL, NULL, count * RT2560_TX_DESC_SIZE, 1,
479 count * RT2560_TX_DESC_SIZE, 0, &ring->desc_dmat);
481 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
485 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
486 BUS_DMA_WAITOK | BUS_DMA_ZERO, &ring->desc_map);
488 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
492 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
493 count * RT2560_TX_DESC_SIZE,
494 rt2560_dma_map_addr, &ring->physaddr, 0);
496 device_printf(sc->sc_dev, "could not load desc DMA map\n");
498 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
503 ring->data = kmalloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF,
506 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
507 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, RT2560_MAX_SCATTER,
508 MCLBYTES, 0, &ring->data_dmat);
510 device_printf(sc->sc_dev, "could not create data DMA tag\n");
514 for (i = 0; i < count; i++) {
515 error = bus_dmamap_create(ring->data_dmat, 0,
518 device_printf(sc->sc_dev, "could not create DMA map\n");
524 fail: rt2560_free_tx_ring(sc, ring);
529 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
531 struct rt2560_tx_desc *desc;
532 struct rt2560_tx_data *data;
535 for (i = 0; i < ring->count; i++) {
536 desc = &ring->desc[i];
537 data = &ring->data[i];
539 if (data->m != NULL) {
540 bus_dmamap_sync(ring->data_dmat, data->map,
541 BUS_DMASYNC_POSTWRITE);
542 bus_dmamap_unload(ring->data_dmat, data->map);
547 if (data->ni != NULL) {
548 ieee80211_free_node(data->ni);
555 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
558 ring->cur = ring->next = 0;
559 ring->cur_encrypt = ring->next_encrypt = 0;
563 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
565 struct rt2560_tx_data *data;
568 if (ring->desc != NULL) {
569 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
570 BUS_DMASYNC_POSTWRITE);
571 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
572 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
576 if (ring->desc_dmat != NULL) {
577 bus_dma_tag_destroy(ring->desc_dmat);
578 ring->desc_dmat = NULL;
581 if (ring->data != NULL) {
582 for (i = 0; i < ring->count; i++) {
583 data = &ring->data[i];
585 if (data->m != NULL) {
586 bus_dmamap_sync(ring->data_dmat, data->map,
587 BUS_DMASYNC_POSTWRITE);
588 bus_dmamap_unload(ring->data_dmat, data->map);
593 if (data->ni != NULL) {
594 ieee80211_free_node(data->ni);
598 if (data->map != NULL) {
599 bus_dmamap_destroy(ring->data_dmat, data->map);
604 kfree(ring->data, M_DEVBUF);
608 if (ring->data_dmat != NULL) {
609 bus_dma_tag_destroy(ring->data_dmat);
610 ring->data_dmat = NULL;
615 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring,
618 struct rt2560_rx_desc *desc;
619 struct rt2560_rx_data *data;
624 ring->cur = ring->next = 0;
625 ring->cur_decrypt = 0;
627 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
628 BUS_SPACE_MAXADDR, NULL, NULL, count * RT2560_RX_DESC_SIZE, 1,
629 count * RT2560_RX_DESC_SIZE, 0, &ring->desc_dmat);
631 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
635 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
636 BUS_DMA_WAITOK | BUS_DMA_ZERO, &ring->desc_map);
638 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
642 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
643 count * RT2560_RX_DESC_SIZE,
644 rt2560_dma_map_addr, &ring->physaddr, 0);
646 device_printf(sc->sc_dev, "could not load desc DMA map\n");
648 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
653 ring->data = kmalloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF,
657 * Pre-allocate Rx buffers and populate Rx ring.
659 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
660 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0,
663 device_printf(sc->sc_dev, "could not create data DMA tag\n");
667 for (i = 0; i < count; i++) {
668 desc = &sc->rxq.desc[i];
669 data = &sc->rxq.data[i];
671 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
673 device_printf(sc->sc_dev, "could not create DMA map\n");
677 data->m = m_getcl(MB_WAIT, MT_DATA, M_PKTHDR);
678 if (data->m == NULL) {
679 device_printf(sc->sc_dev,
680 "could not allocate rx mbuf\n");
685 error = bus_dmamap_load(ring->data_dmat, data->map,
686 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr,
689 device_printf(sc->sc_dev,
690 "could not load rx buf DMA map");
697 desc->flags = htole32(RT2560_RX_BUSY);
698 desc->physaddr = htole32(physaddr);
701 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
705 fail: rt2560_free_rx_ring(sc, ring);
710 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
714 for (i = 0; i < ring->count; i++) {
715 ring->desc[i].flags = htole32(RT2560_RX_BUSY);
716 ring->data[i].drop = 0;
719 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
721 ring->cur = ring->next = 0;
722 ring->cur_decrypt = 0;
726 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
728 struct rt2560_rx_data *data;
730 if (ring->desc != NULL) {
731 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
732 BUS_DMASYNC_POSTWRITE);
733 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
734 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
738 if (ring->desc_dmat != NULL) {
739 bus_dma_tag_destroy(ring->desc_dmat);
740 ring->desc_dmat = NULL;
743 if (ring->data != NULL) {
746 for (i = 0; i < ring->count; i++) {
747 data = &ring->data[i];
749 if (data->m != NULL) {
750 bus_dmamap_sync(ring->data_dmat, data->map,
751 BUS_DMASYNC_POSTREAD);
752 bus_dmamap_unload(ring->data_dmat, data->map);
757 if (data->map != NULL) {
758 bus_dmamap_destroy(ring->data_dmat, data->map);
763 kfree(ring->data, M_DEVBUF);
767 if (ring->data_dmat != NULL) {
768 bus_dma_tag_destroy(ring->data_dmat);
769 ring->data_dmat = NULL;
773 static struct ieee80211_node *
774 rt2560_node_alloc(struct ieee80211_node_table *nt)
776 struct rt2560_node *rn;
778 rn = kmalloc(sizeof(struct rt2560_node), M_80211_NODE,
781 return (rn != NULL) ? &rn->ni : NULL;
785 rt2560_media_change(struct ifnet *ifp)
787 struct rt2560_softc *sc = ifp->if_softc;
790 error = ieee80211_media_change(ifp);
791 if (error != ENETRESET)
794 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING))
800 * This function is called periodically (every 200ms) during scanning to
801 * switch from one channel to another.
804 rt2560_next_scan(void *arg)
806 struct rt2560_softc *sc = arg;
807 struct ieee80211com *ic = &sc->sc_ic;
808 struct ifnet *ifp = ic->ic_ifp;
810 lwkt_serialize_enter(ifp->if_serializer);
811 if (ic->ic_state == IEEE80211_S_SCAN)
812 ieee80211_next_scan(ic);
813 lwkt_serialize_exit(ifp->if_serializer);
817 * This function is called for each node present in the node station table.
820 rt2560_iter_func(void *arg, struct ieee80211_node *ni)
822 struct rt2560_node *rn = (struct rt2560_node *)ni;
824 ral_rssadapt_updatestats(&rn->rssadapt);
828 * This function is called periodically (every 100ms) in RUN state to update
829 * the rate adaptation statistics.
832 rt2560_update_rssadapt(void *arg)
834 struct rt2560_softc *sc = arg;
835 struct ieee80211com *ic = &sc->sc_ic;
836 struct ifnet *ifp = ic->ic_ifp;
838 lwkt_serialize_enter(ifp->if_serializer);
840 ieee80211_iterate_nodes(&ic->ic_sta, rt2560_iter_func, arg);
841 callout_reset(&sc->rssadapt_ch, hz / 10, rt2560_update_rssadapt, sc);
843 lwkt_serialize_exit(ifp->if_serializer);
847 rt2560_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
849 struct rt2560_softc *sc = ic->ic_ifp->if_softc;
850 enum ieee80211_state ostate;
851 struct ieee80211_node *ni;
855 ostate = ic->ic_state;
856 callout_stop(&sc->scan_ch);
859 case IEEE80211_S_INIT:
860 callout_stop(&sc->rssadapt_ch);
862 if (ostate == IEEE80211_S_RUN) {
863 /* abort TSF synchronization */
864 RAL_WRITE(sc, RT2560_CSR14, 0);
866 /* turn association led off */
867 rt2560_update_led(sc, 0, 0);
871 case IEEE80211_S_SCAN:
872 rt2560_set_chan(sc, ic->ic_curchan);
873 callout_reset(&sc->scan_ch, (sc->dwelltime * hz) / 1000,
874 rt2560_next_scan, sc);
877 case IEEE80211_S_AUTH:
878 rt2560_set_chan(sc, ic->ic_curchan);
881 case IEEE80211_S_ASSOC:
882 rt2560_set_chan(sc, ic->ic_curchan);
885 case IEEE80211_S_RUN:
886 rt2560_set_chan(sc, ic->ic_curchan);
890 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
891 rt2560_update_plcp(sc);
892 rt2560_set_basicrates(sc);
893 rt2560_set_bssid(sc, ni->ni_bssid);
896 if (ic->ic_opmode == IEEE80211_M_HOSTAP ||
897 ic->ic_opmode == IEEE80211_M_IBSS) {
898 m = ieee80211_beacon_alloc(ic, ni, &sc->sc_bo);
900 device_printf(sc->sc_dev,
901 "could not allocate beacon\n");
906 ieee80211_ref_node(ni);
907 error = rt2560_tx_bcn(sc, m, ni);
912 /* turn assocation led on */
913 rt2560_update_led(sc, 1, 0);
915 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
916 callout_reset(&sc->rssadapt_ch, hz / 10,
917 rt2560_update_rssadapt, sc);
919 rt2560_enable_tsf_sync(sc);
924 return (error != 0) ? error : sc->sc_newstate(ic, nstate, arg);
928 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or
932 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr)
938 /* clock C once before the first command */
939 RT2560_EEPROM_CTL(sc, 0);
941 RT2560_EEPROM_CTL(sc, RT2560_S);
942 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
943 RT2560_EEPROM_CTL(sc, RT2560_S);
945 /* write start bit (1) */
946 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
947 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
949 /* write READ opcode (10) */
950 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
951 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
952 RT2560_EEPROM_CTL(sc, RT2560_S);
953 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
955 /* write address (A5-A0 or A7-A0) */
956 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7;
957 for (; n >= 0; n--) {
958 RT2560_EEPROM_CTL(sc, RT2560_S |
959 (((addr >> n) & 1) << RT2560_SHIFT_D));
960 RT2560_EEPROM_CTL(sc, RT2560_S |
961 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C);
964 RT2560_EEPROM_CTL(sc, RT2560_S);
966 /* read data Q15-Q0 */
968 for (n = 15; n >= 0; n--) {
969 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
970 tmp = RAL_READ(sc, RT2560_CSR21);
971 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n;
972 RT2560_EEPROM_CTL(sc, RT2560_S);
975 RT2560_EEPROM_CTL(sc, 0);
977 /* clear Chip Select and clock C */
978 RT2560_EEPROM_CTL(sc, RT2560_S);
979 RT2560_EEPROM_CTL(sc, 0);
980 RT2560_EEPROM_CTL(sc, RT2560_C);
986 * Some frames were processed by the hardware cipher engine and are ready for
990 rt2560_encryption_intr(struct rt2560_softc *sc)
992 struct rt2560_tx_desc *desc;
995 /* retrieve last descriptor index processed by cipher engine */
996 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr;
997 hw /= RT2560_TX_DESC_SIZE;
999 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1000 BUS_DMASYNC_POSTREAD);
1002 for (; sc->txq.next_encrypt != hw;) {
1003 desc = &sc->txq.desc[sc->txq.next_encrypt];
1005 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
1006 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY))
1009 /* for TKIP, swap eiv field to fix a bug in ASIC */
1010 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) ==
1011 RT2560_TX_CIPHER_TKIP)
1012 desc->eiv = bswap32(desc->eiv);
1014 /* mark the frame ready for transmission */
1015 desc->flags |= htole32(RT2560_TX_BUSY | RT2560_TX_VALID);
1017 DPRINTFN(15, ("encryption done idx=%u\n",
1018 sc->txq.next_encrypt));
1020 sc->txq.next_encrypt =
1021 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT;
1024 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1025 BUS_DMASYNC_PREWRITE);
1028 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX);
1032 rt2560_tx_intr(struct rt2560_softc *sc)
1034 struct ieee80211com *ic = &sc->sc_ic;
1035 struct ifnet *ifp = ic->ic_ifp;
1036 struct rt2560_tx_desc *desc;
1037 struct rt2560_tx_data *data;
1038 struct rt2560_node *rn;
1040 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1041 BUS_DMASYNC_POSTREAD);
1044 desc = &sc->txq.desc[sc->txq.next];
1045 data = &sc->txq.data[sc->txq.next];
1047 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
1048 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY) ||
1049 !(le32toh(desc->flags) & RT2560_TX_VALID))
1052 rn = (struct rt2560_node *)data->ni;
1054 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) {
1055 case RT2560_TX_SUCCESS:
1056 DPRINTFN(10, ("data frame sent successfully\n"));
1057 if (data->id.id_node != NULL) {
1058 ral_rssadapt_raise_rate(ic, &rn->rssadapt,
1064 case RT2560_TX_SUCCESS_RETRY:
1065 DPRINTFN(9, ("data frame sent after %u retries\n",
1066 (le32toh(desc->flags) >> 5) & 0x7));
1070 case RT2560_TX_FAIL_RETRY:
1071 DPRINTFN(9, ("sending data frame failed (too much "
1073 if (data->id.id_node != NULL) {
1074 ral_rssadapt_lower_rate(ic, data->ni,
1075 &rn->rssadapt, &data->id);
1080 case RT2560_TX_FAIL_INVALID:
1081 case RT2560_TX_FAIL_OTHER:
1083 device_printf(sc->sc_dev, "sending data frame failed "
1084 "0x%08x\n", le32toh(desc->flags));
1088 bus_dmamap_sync(sc->txq.data_dmat, data->map,
1089 BUS_DMASYNC_POSTWRITE);
1090 bus_dmamap_unload(sc->txq.data_dmat, data->map);
1093 ieee80211_free_node(data->ni);
1096 /* descriptor is no longer valid */
1097 desc->flags &= ~htole32(RT2560_TX_VALID);
1099 DPRINTFN(15, ("tx done idx=%u\n", sc->txq.next));
1102 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT;
1105 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1106 BUS_DMASYNC_PREWRITE);
1108 sc->sc_tx_timer = 0;
1109 ifp->if_flags &= ~IFF_OACTIVE;
1114 rt2560_prio_intr(struct rt2560_softc *sc)
1116 struct ieee80211com *ic = &sc->sc_ic;
1117 struct ifnet *ifp = ic->ic_ifp;
1118 struct rt2560_tx_desc *desc;
1119 struct rt2560_tx_data *data;
1121 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1122 BUS_DMASYNC_POSTREAD);
1125 desc = &sc->prioq.desc[sc->prioq.next];
1126 data = &sc->prioq.data[sc->prioq.next];
1128 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
1129 !(le32toh(desc->flags) & RT2560_TX_VALID))
1132 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) {
1133 case RT2560_TX_SUCCESS:
1134 DPRINTFN(10, ("mgt frame sent successfully\n"));
1137 case RT2560_TX_SUCCESS_RETRY:
1138 DPRINTFN(9, ("mgt frame sent after %u retries\n",
1139 (le32toh(desc->flags) >> 5) & 0x7));
1142 case RT2560_TX_FAIL_RETRY:
1143 DPRINTFN(9, ("sending mgt frame failed (too much "
1147 case RT2560_TX_FAIL_INVALID:
1148 case RT2560_TX_FAIL_OTHER:
1150 device_printf(sc->sc_dev, "sending mgt frame failed "
1151 "0x%08x\n", le32toh(desc->flags));
1154 bus_dmamap_sync(sc->prioq.data_dmat, data->map,
1155 BUS_DMASYNC_POSTWRITE);
1156 bus_dmamap_unload(sc->prioq.data_dmat, data->map);
1159 ieee80211_free_node(data->ni);
1162 /* descriptor is no longer valid */
1163 desc->flags &= ~htole32(RT2560_TX_VALID);
1165 DPRINTFN(15, ("prio done idx=%u\n", sc->prioq.next));
1168 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT;
1171 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1172 BUS_DMASYNC_PREWRITE);
1174 sc->sc_tx_timer = 0;
1175 ifp->if_flags &= ~IFF_OACTIVE;
1180 * Some frames were processed by the hardware cipher engine and are ready for
1181 * transmission to the IEEE802.11 layer.
1184 rt2560_decryption_intr(struct rt2560_softc *sc)
1186 struct ieee80211com *ic = &sc->sc_ic;
1187 struct ifnet *ifp = ic->ic_ifp;
1188 struct rt2560_rx_desc *desc;
1189 struct rt2560_rx_data *data;
1190 bus_addr_t physaddr;
1191 struct ieee80211_frame *wh;
1192 struct ieee80211_node *ni;
1193 struct rt2560_node *rn;
1194 struct mbuf *mnew, *m;
1197 /* retrieve last decriptor index processed by cipher engine */
1198 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr;
1199 hw /= RT2560_RX_DESC_SIZE;
1201 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1202 BUS_DMASYNC_POSTREAD);
1204 for (; sc->rxq.cur_decrypt != hw;) {
1205 desc = &sc->rxq.desc[sc->rxq.cur_decrypt];
1206 data = &sc->rxq.data[sc->rxq.cur_decrypt];
1208 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1209 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1217 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 &&
1218 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) {
1224 * Try to allocate a new mbuf for this ring element and load it
1225 * before processing the current mbuf. If the ring element
1226 * cannot be loaded, drop the received packet and reuse the old
1227 * mbuf. In the unlikely case that the old mbuf can't be
1228 * reloaded either, explicitly panic.
1230 mnew = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
1236 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1237 BUS_DMASYNC_POSTREAD);
1238 bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1240 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1241 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr,
1246 /* try to reload the old mbuf */
1247 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1248 mtod(data->m, void *), MCLBYTES,
1249 rt2560_dma_map_addr, &physaddr, 0);
1251 /* very unlikely that it will fail... */
1252 panic("%s: could not load old rx mbuf",
1253 device_get_name(sc->sc_dev));
1260 * New mbuf successfully loaded, update Rx ring and continue
1265 desc->physaddr = htole32(physaddr);
1268 m->m_pkthdr.rcvif = ifp;
1269 m->m_pkthdr.len = m->m_len =
1270 (le32toh(desc->flags) >> 16) & 0xfff;
1272 if (sc->sc_drvbpf != NULL) {
1273 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap;
1274 uint32_t tsf_lo, tsf_hi;
1276 /* get timestamp (low and high 32 bits) */
1277 tsf_hi = RAL_READ(sc, RT2560_CSR17);
1278 tsf_lo = RAL_READ(sc, RT2560_CSR16);
1281 htole64(((uint64_t)tsf_hi << 32) | tsf_lo);
1283 tap->wr_rate = rt2560_rxrate(desc);
1284 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
1285 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
1286 tap->wr_antenna = sc->rx_ant;
1287 tap->wr_antsignal = desc->rssi;
1289 bpf_ptap(sc->sc_drvbpf, m, tap, sc->sc_rxtap_len);
1292 wh = mtod(m, struct ieee80211_frame *);
1293 ni = ieee80211_find_rxnode(ic,
1294 (struct ieee80211_frame_min *)wh);
1296 /* send the frame to the 802.11 layer */
1297 ieee80211_input(ic, m, ni, desc->rssi, 0);
1299 /* give rssi to the rate adatation algorithm */
1300 rn = (struct rt2560_node *)ni;
1301 ral_rssadapt_input(ic, ni, &rn->rssadapt, desc->rssi);
1303 /* node is no longer needed */
1304 ieee80211_free_node(ni);
1306 skip: desc->flags = htole32(RT2560_RX_BUSY);
1308 DPRINTFN(15, ("decryption done idx=%u\n", sc->rxq.cur_decrypt));
1310 sc->rxq.cur_decrypt =
1311 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT;
1314 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1315 BUS_DMASYNC_PREWRITE);
1319 * Some frames were received. Pass them to the hardware cipher engine before
1320 * sending them to the 802.11 layer.
1323 rt2560_rx_intr(struct rt2560_softc *sc)
1325 struct rt2560_rx_desc *desc;
1326 struct rt2560_rx_data *data;
1328 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1329 BUS_DMASYNC_POSTREAD);
1332 desc = &sc->rxq.desc[sc->rxq.cur];
1333 data = &sc->rxq.data[sc->rxq.cur];
1335 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1336 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1341 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) ||
1342 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) {
1344 * This should not happen since we did not request
1345 * to receive those frames when we filled RXCSR0.
1347 DPRINTFN(5, ("PHY or CRC error flags 0x%08x\n",
1348 le32toh(desc->flags)));
1352 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) {
1353 DPRINTFN(5, ("bad length\n"));
1357 /* mark the frame for decryption */
1358 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY);
1360 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1362 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT;
1365 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1366 BUS_DMASYNC_PREWRITE);
1369 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT);
1373 * This function is called periodically in IBSS mode when a new beacon must be
1377 rt2560_beacon_expire(struct rt2560_softc *sc)
1379 struct ieee80211com *ic = &sc->sc_ic;
1380 struct rt2560_tx_data *data;
1382 if (ic->ic_opmode != IEEE80211_M_IBSS &&
1383 ic->ic_opmode != IEEE80211_M_HOSTAP)
1386 data = &sc->bcnq.data[sc->bcnq.next];
1388 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
1389 bus_dmamap_unload(sc->bcnq.data_dmat, data->map);
1391 ieee80211_beacon_update(ic, data->ni, &sc->sc_bo, data->m, 1);
1393 if (ic->ic_rawbpf != NULL)
1394 bpf_mtap(ic->ic_rawbpf, data->m);
1396 rt2560_tx_bcn(sc, data->m, data->ni);
1398 DPRINTFN(15, ("beacon expired\n"));
1400 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT;
1405 rt2560_wakeup_expire(struct rt2560_softc *sc)
1407 DPRINTFN(2, ("wakeup expired\n"));
1411 rt2560_intr(void *arg)
1413 struct rt2560_softc *sc = arg;
1414 struct ifnet *ifp = &sc->sc_ic.ic_if;
1417 /* disable interrupts */
1418 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
1420 /* don't re-enable interrupts if we're shutting down */
1421 if (!(ifp->if_flags & IFF_RUNNING))
1424 r = RAL_READ(sc, RT2560_CSR7);
1425 RAL_WRITE(sc, RT2560_CSR7, r);
1427 if (r & RT2560_BEACON_EXPIRE)
1428 rt2560_beacon_expire(sc);
1430 if (r & RT2560_WAKEUP_EXPIRE)
1431 rt2560_wakeup_expire(sc);
1433 if (r & RT2560_PRIO_DONE)
1434 rt2560_prio_intr(sc);
1436 if (r & (RT2560_TX_DONE | RT2560_ENCRYPTION_DONE)) {
1439 for (i = 0; i < 2; ++i) {
1441 rt2560_encryption_intr(sc);
1445 if (r & (RT2560_DECRYPTION_DONE | RT2560_RX_DONE)) {
1448 for (i = 0; i < 2; ++i) {
1449 rt2560_decryption_intr(sc);
1454 /* re-enable interrupts */
1455 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
1458 /* quickly determine if a given rate is CCK or OFDM */
1459 #define RAL_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
1461 #define RAL_ACK_SIZE 14 /* 10 + 4(FCS) */
1462 #define RAL_CTS_SIZE 14 /* 10 + 4(FCS) */
1464 #define RAL_SIFS 10 /* us */
1466 #define RT2560_TXRX_TURNAROUND 10 /* us */
1469 * This function is only used by the Rx radiotap code.
1472 rt2560_rxrate(struct rt2560_rx_desc *desc)
1474 if (le32toh(desc->flags) & RT2560_RX_OFDM) {
1475 /* reverse function of rt2560_plcp_signal */
1476 switch (desc->rate) {
1477 case 0xb: return 12;
1478 case 0xf: return 18;
1479 case 0xa: return 24;
1480 case 0xe: return 36;
1481 case 0x9: return 48;
1482 case 0xd: return 72;
1483 case 0x8: return 96;
1484 case 0xc: return 108;
1487 if (desc->rate == 10)
1489 if (desc->rate == 20)
1491 if (desc->rate == 55)
1493 if (desc->rate == 110)
1496 return 2; /* should not get there */
1500 * Return the expected ack rate for a frame transmitted at rate `rate'.
1501 * XXX: this should depend on the destination node basic rate set.
1504 rt2560_ack_rate(struct ieee80211com *ic, int rate)
1513 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate;
1529 /* default to 1Mbps */
1534 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'.
1535 * The function automatically determines the operating mode depending on the
1536 * given rate. `flags' indicates whether short preamble is in use or not.
1539 rt2560_txtime(int len, int rate, uint32_t flags)
1543 if (RAL_RATE_IS_OFDM(rate)) {
1544 /* IEEE Std 802.11a-1999, pp. 37 */
1545 txtime = (8 + 4 * len + 3 + rate - 1) / rate;
1546 txtime = 16 + 4 + 4 * txtime + 6;
1548 /* IEEE Std 802.11b-1999, pp. 28 */
1549 txtime = (16 * len + rate - 1) / rate;
1550 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE))
1560 rt2560_plcp_signal(int rate)
1563 /* CCK rates (returned values are device-dependent) */
1566 case 11: return 0x2;
1567 case 22: return 0x3;
1569 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1570 case 12: return 0xb;
1571 case 18: return 0xf;
1572 case 24: return 0xa;
1573 case 36: return 0xe;
1574 case 48: return 0x9;
1575 case 72: return 0xd;
1576 case 96: return 0x8;
1577 case 108: return 0xc;
1579 /* unsupported rates (should not get there) */
1580 default: return 0xff;
1585 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc,
1586 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr)
1588 struct ieee80211com *ic = &sc->sc_ic;
1589 uint16_t plcp_length;
1592 desc->flags = htole32(flags);
1593 desc->flags |= htole32(len << 16);
1594 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) :
1595 htole32(RT2560_TX_BUSY | RT2560_TX_VALID);
1597 desc->physaddr = htole32(physaddr);
1598 desc->wme = htole16(
1600 RT2560_LOGCWMIN(3) |
1601 RT2560_LOGCWMAX(8));
1603 /* setup PLCP fields */
1604 desc->plcp_signal = rt2560_plcp_signal(rate);
1605 desc->plcp_service = 4;
1607 len += IEEE80211_CRC_LEN;
1608 if (RAL_RATE_IS_OFDM(rate)) {
1609 desc->flags |= htole32(RT2560_TX_OFDM);
1611 plcp_length = len & 0xfff;
1612 desc->plcp_length_hi = plcp_length >> 6;
1613 desc->plcp_length_lo = plcp_length & 0x3f;
1615 plcp_length = (16 * len + rate - 1) / rate;
1617 remainder = (16 * len) % 22;
1618 if (remainder != 0 && remainder < 7)
1619 desc->plcp_service |= RT2560_PLCP_LENGEXT;
1621 desc->plcp_length_hi = plcp_length >> 8;
1622 desc->plcp_length_lo = plcp_length & 0xff;
1624 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1625 desc->plcp_signal |= 0x08;
1630 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0,
1631 struct ieee80211_node *ni)
1633 struct ieee80211com *ic = &sc->sc_ic;
1634 struct rt2560_tx_desc *desc;
1635 struct rt2560_tx_data *data;
1639 desc = &sc->bcnq.desc[sc->bcnq.cur];
1640 data = &sc->bcnq.data[sc->bcnq.cur];
1642 rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2;
1644 error = bus_dmamap_load_mbuf(sc->bcnq.data_dmat, data->map, m0,
1645 rt2560_dma_map_mbuf, &paddr,
1648 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1654 if (sc->sc_drvbpf != NULL) {
1655 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1658 tap->wt_rate = rate;
1659 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1660 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1661 tap->wt_antenna = sc->tx_ant;
1663 bpf_ptap(sc->sc_drvbpf, m0, tap, sc->sc_txtap_len);
1669 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF |
1670 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, paddr);
1672 DPRINTFN(10, ("sending beacon frame len=%u idx=%u rate=%u\n",
1673 m0->m_pkthdr.len, sc->bcnq.cur, rate));
1675 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1676 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map,
1677 BUS_DMASYNC_PREWRITE);
1679 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT;
1685 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0,
1686 struct ieee80211_node *ni)
1688 struct ieee80211com *ic = &sc->sc_ic;
1689 struct rt2560_tx_desc *desc;
1690 struct rt2560_tx_data *data;
1691 struct ieee80211_frame *wh;
1697 desc = &sc->prioq.desc[sc->prioq.cur];
1698 data = &sc->prioq.data[sc->prioq.cur];
1700 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1702 error = bus_dmamap_load_mbuf(sc->prioq.data_dmat, data->map, m0,
1703 rt2560_dma_map_mbuf, &paddr, 0);
1705 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1711 if (sc->sc_drvbpf != NULL) {
1712 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1715 tap->wt_rate = rate;
1716 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1717 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1718 tap->wt_antenna = sc->tx_ant;
1720 bpf_ptap(sc->sc_drvbpf, m0, tap, sc->sc_txtap_len);
1726 wh = mtod(m0, struct ieee80211_frame *);
1728 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1729 flags |= RT2560_TX_ACK;
1731 dur = rt2560_txtime(RAL_ACK_SIZE, rate, ic->ic_flags) +
1733 *(uint16_t *)wh->i_dur = htole16(dur);
1735 /* tell hardware to add timestamp for probe responses */
1736 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
1737 IEEE80211_FC0_TYPE_MGT &&
1738 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) ==
1739 IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1740 flags |= RT2560_TX_TIMESTAMP;
1743 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, paddr);
1745 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1746 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1747 BUS_DMASYNC_PREWRITE);
1749 DPRINTFN(10, ("sending mgt frame len=%u idx=%u rate=%u\n",
1750 m0->m_pkthdr.len, sc->prioq.cur, rate));
1754 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1755 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1761 * Build a RTS control frame.
1763 static struct mbuf *
1764 rt2560_get_rts(struct rt2560_softc *sc, struct ieee80211_frame *wh,
1767 struct ieee80211_frame_rts *rts;
1770 MGETHDR(m, MB_DONTWAIT, MT_DATA);
1772 sc->sc_ic.ic_stats.is_tx_nobuf++;
1773 device_printf(sc->sc_dev, "could not allocate RTS frame\n");
1777 rts = mtod(m, struct ieee80211_frame_rts *);
1779 rts->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_CTL |
1780 IEEE80211_FC0_SUBTYPE_RTS;
1781 rts->i_fc[1] = IEEE80211_FC1_DIR_NODS;
1782 *(uint16_t *)rts->i_dur = htole16(dur);
1783 IEEE80211_ADDR_COPY(rts->i_ra, wh->i_addr1);
1784 IEEE80211_ADDR_COPY(rts->i_ta, wh->i_addr2);
1786 m->m_pkthdr.len = m->m_len = sizeof(struct ieee80211_frame_rts);
1792 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0,
1793 struct ieee80211_node *ni)
1795 struct ieee80211com *ic = &sc->sc_ic;
1796 struct rt2560_tx_desc *desc;
1797 struct rt2560_tx_data *data;
1798 struct rt2560_node *rn;
1799 struct ieee80211_rateset *rs;
1800 struct ieee80211_frame *wh;
1801 struct ieee80211_key *k;
1808 wh = mtod(m0, struct ieee80211_frame *);
1810 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
1811 rs = &ic->ic_sup_rates[ic->ic_curmode];
1812 rate = rs->rs_rates[ic->ic_fixed_rate];
1815 rn = (struct rt2560_node *)ni;
1816 ni->ni_txrate = ral_rssadapt_choose(&rn->rssadapt, rs, wh,
1817 m0->m_pkthdr.len, NULL, 0);
1818 rate = rs->rs_rates[ni->ni_txrate];
1820 rate &= IEEE80211_RATE_VAL;
1822 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1823 k = ieee80211_crypto_encap(ic, ni, m0);
1829 /* packet header may have moved, reset our local pointer */
1830 wh = mtod(m0, struct ieee80211_frame *);
1834 * IEEE Std 802.11-1999, pp 82: "A STA shall use an RTS/CTS exchange
1835 * for directed frames only when the length of the MPDU is greater
1836 * than the length threshold indicated by [...]" ic_rtsthreshold.
1838 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) &&
1839 m0->m_pkthdr.len > ic->ic_rtsthreshold) {
1842 int rtsrate, ackrate;
1844 rtsrate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1845 ackrate = rt2560_ack_rate(ic, rate);
1847 dur = rt2560_txtime(m0->m_pkthdr.len + 4, rate, ic->ic_flags) +
1848 rt2560_txtime(RAL_CTS_SIZE, rtsrate, ic->ic_flags) +
1849 rt2560_txtime(RAL_ACK_SIZE, ackrate, ic->ic_flags) +
1852 m = rt2560_get_rts(sc, wh, dur);
1854 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1855 data = &sc->txq.data[sc->txq.cur_encrypt];
1857 error = bus_dmamap_load_mbuf(sc->txq.data_dmat, data->map,
1858 m, rt2560_dma_map_mbuf, &paddr, 0);
1860 device_printf(sc->sc_dev,
1861 "could not map mbuf (error %d)\n", error);
1867 /* avoid multiple free() of the same node for each fragment */
1868 ieee80211_ref_node(ni);
1873 /* RTS frames are not taken into account for rssadapt */
1874 data->id.id_node = NULL;
1876 rt2560_setup_tx_desc(sc, desc, RT2560_TX_ACK |
1877 RT2560_TX_MORE_FRAG, m->m_pkthdr.len, rtsrate, 1, paddr);
1879 bus_dmamap_sync(sc->txq.data_dmat, data->map,
1880 BUS_DMASYNC_PREWRITE);
1883 sc->txq.cur_encrypt =
1884 (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1887 * IEEE Std 802.11-1999: when an RTS/CTS exchange is used, the
1888 * asynchronous data frame shall be transmitted after the CTS
1889 * frame and a SIFS period.
1891 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS;
1894 data = &sc->txq.data[sc->txq.cur_encrypt];
1895 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1897 error = bus_dmamap_load_mbuf(sc->txq.data_dmat, data->map, m0,
1898 rt2560_dma_map_mbuf, &paddr, 0);
1899 if (error != 0 && error != EFBIG) {
1900 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1906 mnew = m_defrag(m0, MB_DONTWAIT);
1908 device_printf(sc->sc_dev,
1909 "could not defragment mbuf\n");
1915 error = bus_dmamap_load_mbuf(sc->txq.data_dmat, data->map,
1916 m0, rt2560_dma_map_mbuf, &paddr,
1919 device_printf(sc->sc_dev,
1920 "could not map mbuf (error %d)\n", error);
1925 /* packet header may have moved, reset our local pointer */
1926 wh = mtod(m0, struct ieee80211_frame *);
1929 if (sc->sc_drvbpf != NULL) {
1930 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1933 tap->wt_rate = rate;
1934 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1935 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1936 tap->wt_antenna = sc->tx_ant;
1938 bpf_ptap(sc->sc_drvbpf, m0, tap, sc->sc_txtap_len);
1944 /* remember link conditions for rate adaptation algorithm */
1945 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) {
1946 data->id.id_len = m0->m_pkthdr.len;
1947 data->id.id_rateidx = ni->ni_txrate;
1948 data->id.id_node = ni;
1949 data->id.id_rssi = ni->ni_rssi;
1951 data->id.id_node = NULL;
1953 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1954 flags |= RT2560_TX_ACK;
1956 dur = rt2560_txtime(RAL_ACK_SIZE, rt2560_ack_rate(ic, rate),
1957 ic->ic_flags) + RAL_SIFS;
1958 *(uint16_t *)wh->i_dur = htole16(dur);
1961 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, paddr);
1963 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1964 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1965 BUS_DMASYNC_PREWRITE);
1967 DPRINTFN(10, ("sending data frame len=%u idx=%u rate=%u\n",
1968 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate));
1972 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1973 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT);
1979 rt2560_start(struct ifnet *ifp)
1981 struct rt2560_softc *sc = ifp->if_softc;
1982 struct ieee80211com *ic = &sc->sc_ic;
1984 struct ether_header *eh;
1985 struct ieee80211_node *ni;
1987 /* prevent management frames from being sent if we're not ready */
1988 if (!(ifp->if_flags & IFF_RUNNING))
1992 IF_POLL(&ic->ic_mgtq, m0);
1994 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) {
1995 ifp->if_flags |= IFF_OACTIVE;
1998 IF_DEQUEUE(&ic->ic_mgtq, m0);
2000 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif;
2001 m0->m_pkthdr.rcvif = NULL;
2003 if (ic->ic_rawbpf != NULL)
2004 bpf_mtap(ic->ic_rawbpf, m0);
2006 if (rt2560_tx_mgt(sc, m0, ni) != 0)
2010 if (ic->ic_state != IEEE80211_S_RUN)
2012 m0 = ifq_poll(&ifp->if_snd);
2015 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) {
2016 ifp->if_flags |= IFF_OACTIVE;
2019 m0 = ifq_dequeue(&ifp->if_snd, m0);
2021 if (m0->m_len < sizeof (struct ether_header) &&
2022 !(m0 = m_pullup(m0, sizeof (struct ether_header))))
2025 eh = mtod(m0, struct ether_header *);
2026 ni = ieee80211_find_txnode(ic, eh->ether_dhost);
2033 m0 = ieee80211_encap(ic, m0, ni);
2035 ieee80211_free_node(ni);
2039 if (ic->ic_rawbpf != NULL)
2040 bpf_mtap(ic->ic_rawbpf, m0);
2042 if (rt2560_tx_data(sc, m0, ni) != 0) {
2043 ieee80211_free_node(ni);
2049 sc->sc_tx_timer = 5;
2055 rt2560_watchdog(struct ifnet *ifp)
2057 struct rt2560_softc *sc = ifp->if_softc;
2058 struct ieee80211com *ic = &sc->sc_ic;
2062 if (sc->sc_tx_timer > 0) {
2063 if (--sc->sc_tx_timer == 0) {
2064 device_printf(sc->sc_dev, "device timeout\n");
2072 ieee80211_watchdog(ic);
2076 * This function allows for fast channel switching in monitor mode (used by
2077 * net-mgmt/kismet). In IBSS mode, we must explicitly reset the interface to
2078 * generate a new beacon frame.
2081 rt2560_reset(struct ifnet *ifp)
2083 struct rt2560_softc *sc = ifp->if_softc;
2084 struct ieee80211com *ic = &sc->sc_ic;
2086 if (ic->ic_opmode != IEEE80211_M_MONITOR)
2089 rt2560_set_chan(sc, ic->ic_curchan);
2095 rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr)
2097 struct rt2560_softc *sc = ifp->if_softc;
2098 struct ieee80211com *ic = &sc->sc_ic;
2103 if (ifp->if_flags & IFF_UP) {
2104 if (ifp->if_flags & IFF_RUNNING)
2105 rt2560_update_promisc(sc);
2109 if (ifp->if_flags & IFF_RUNNING)
2115 error = ieee80211_ioctl(ic, cmd, data, cr);
2118 if (error == ENETRESET) {
2119 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
2120 (IFF_UP | IFF_RUNNING) &&
2121 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL))
2130 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val)
2135 for (ntries = 0; ntries < 100; ntries++) {
2136 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY))
2140 if (ntries == 100) {
2141 device_printf(sc->sc_dev, "could not write to BBP\n");
2145 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val;
2146 RAL_WRITE(sc, RT2560_BBPCSR, tmp);
2148 DPRINTFN(15, ("BBP R%u <- 0x%02x\n", reg, val));
2152 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg)
2157 val = RT2560_BBP_BUSY | reg << 8;
2158 RAL_WRITE(sc, RT2560_BBPCSR, val);
2160 for (ntries = 0; ntries < 100; ntries++) {
2161 val = RAL_READ(sc, RT2560_BBPCSR);
2162 if (!(val & RT2560_BBP_BUSY))
2167 device_printf(sc->sc_dev, "could not read from BBP\n");
2172 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val)
2177 for (ntries = 0; ntries < 100; ntries++) {
2178 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY))
2182 if (ntries == 100) {
2183 device_printf(sc->sc_dev, "could not write to RF\n");
2187 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 |
2189 RAL_WRITE(sc, RT2560_RFCSR, tmp);
2191 /* remember last written value in sc */
2192 sc->rf_regs[reg] = val;
2194 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff));
2198 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c)
2200 struct ieee80211com *ic = &sc->sc_ic;
2204 chan = ieee80211_chan2ieee(ic, c);
2205 if (chan == 0 || chan == IEEE80211_CHAN_ANY)
2208 if (IEEE80211_IS_CHAN_2GHZ(c))
2209 power = min(sc->txpow[chan - 1], 31);
2213 /* adjust txpower using ifconfig settings */
2214 power -= (100 - ic->ic_txpowlimit) / 8;
2216 DPRINTFN(2, ("setting channel to %u, txpower to %u\n", chan, power));
2218 switch (sc->rf_rev) {
2219 case RT2560_RF_2522:
2220 rt2560_rf_write(sc, RAL_RF1, 0x00814);
2221 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]);
2222 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2225 case RT2560_RF_2523:
2226 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2227 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]);
2228 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044);
2229 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2232 case RT2560_RF_2524:
2233 rt2560_rf_write(sc, RAL_RF1, 0x0c808);
2234 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]);
2235 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2236 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2239 case RT2560_RF_2525:
2240 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2241 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]);
2242 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2243 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2245 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2246 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]);
2247 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2248 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2251 case RT2560_RF_2525E:
2252 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2253 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]);
2254 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2255 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282);
2258 case RT2560_RF_2526:
2259 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]);
2260 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2261 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2263 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]);
2264 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2265 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2269 case RT2560_RF_5222:
2270 for (i = 0; rt2560_rf5222[i].chan != chan; i++);
2272 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1);
2273 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2);
2274 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2275 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4);
2279 if (ic->ic_state != IEEE80211_S_SCAN) {
2280 /* set Japan filter bit for channel 14 */
2281 tmp = rt2560_bbp_read(sc, 70);
2283 tmp &= ~RT2560_JAPAN_FILTER;
2285 tmp |= RT2560_JAPAN_FILTER;
2287 rt2560_bbp_write(sc, 70, tmp);
2289 /* clear CRC errors */
2290 RAL_READ(sc, RT2560_CNT0);
2296 * Disable RF auto-tuning.
2299 rt2560_disable_rf_tune(struct rt2560_softc *sc)
2303 if (sc->rf_rev != RT2560_RF_2523) {
2304 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE;
2305 rt2560_rf_write(sc, RAL_RF1, tmp);
2308 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE;
2309 rt2560_rf_write(sc, RAL_RF3, tmp);
2311 DPRINTFN(2, ("disabling RF autotune\n"));
2316 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF
2320 rt2560_enable_tsf_sync(struct rt2560_softc *sc)
2322 struct ieee80211com *ic = &sc->sc_ic;
2323 uint16_t logcwmin, preload;
2326 /* first, disable TSF synchronization */
2327 RAL_WRITE(sc, RT2560_CSR14, 0);
2329 tmp = 16 * ic->ic_bss->ni_intval;
2330 RAL_WRITE(sc, RT2560_CSR12, tmp);
2332 RAL_WRITE(sc, RT2560_CSR13, 0);
2335 preload = (ic->ic_opmode == IEEE80211_M_STA) ? 384 : 1024;
2336 tmp = logcwmin << 16 | preload;
2337 RAL_WRITE(sc, RT2560_BCNOCSR, tmp);
2339 /* finally, enable TSF synchronization */
2340 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN;
2341 if (ic->ic_opmode == IEEE80211_M_STA)
2342 tmp |= RT2560_ENABLE_TSF_SYNC(1);
2344 tmp |= RT2560_ENABLE_TSF_SYNC(2) |
2345 RT2560_ENABLE_BEACON_GENERATOR;
2346 RAL_WRITE(sc, RT2560_CSR14, tmp);
2348 DPRINTF(("enabling TSF synchronization\n"));
2352 rt2560_update_plcp(struct rt2560_softc *sc)
2354 struct ieee80211com *ic = &sc->sc_ic;
2356 /* no short preamble for 1Mbps */
2357 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400);
2359 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) {
2360 /* values taken from the reference driver */
2361 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401);
2362 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402);
2363 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403);
2365 /* same values as above or'ed 0x8 */
2366 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409);
2367 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a);
2368 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b);
2371 DPRINTF(("updating PLCP for %s preamble\n",
2372 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"));
2376 * This function can be called by ieee80211_set_shortslottime(). Refer to
2377 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed.
2380 rt2560_update_slot(struct ifnet *ifp)
2382 struct rt2560_softc *sc = ifp->if_softc;
2383 struct ieee80211com *ic = &sc->sc_ic;
2385 uint16_t tx_sifs, tx_pifs, tx_difs, eifs;
2388 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
2390 /* update the MAC slot boundaries */
2391 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND;
2392 tx_pifs = tx_sifs + slottime;
2393 tx_difs = tx_sifs + 2 * slottime;
2394 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60;
2396 tmp = RAL_READ(sc, RT2560_CSR11);
2397 tmp = (tmp & ~0x1f00) | slottime << 8;
2398 RAL_WRITE(sc, RT2560_CSR11, tmp);
2400 tmp = tx_pifs << 16 | tx_sifs;
2401 RAL_WRITE(sc, RT2560_CSR18, tmp);
2403 tmp = eifs << 16 | tx_difs;
2404 RAL_WRITE(sc, RT2560_CSR19, tmp);
2406 DPRINTF(("setting slottime to %uus\n", slottime));
2410 rt2560_set_basicrates(struct rt2560_softc *sc)
2412 struct ieee80211com *ic = &sc->sc_ic;
2414 /* update basic rate set */
2415 if (ic->ic_curmode == IEEE80211_MODE_11B) {
2416 /* 11b basic rates: 1, 2Mbps */
2417 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3);
2418 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) {
2419 /* 11a basic rates: 6, 12, 24Mbps */
2420 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150);
2422 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */
2423 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f);
2428 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2)
2432 /* set ON period to 70ms and OFF period to 30ms */
2433 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30;
2434 RAL_WRITE(sc, RT2560_LEDCSR, tmp);
2438 rt2560_set_bssid(struct rt2560_softc *sc, uint8_t *bssid)
2442 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
2443 RAL_WRITE(sc, RT2560_CSR5, tmp);
2445 tmp = bssid[4] | bssid[5] << 8;
2446 RAL_WRITE(sc, RT2560_CSR6, tmp);
2448 DPRINTF(("setting BSSID to %6D\n", bssid, ":"));
2452 rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2456 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
2457 RAL_WRITE(sc, RT2560_CSR3, tmp);
2459 tmp = addr[4] | addr[5] << 8;
2460 RAL_WRITE(sc, RT2560_CSR4, tmp);
2462 DPRINTF(("setting MAC address to %6D\n", addr, ":"));
2466 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2470 tmp = RAL_READ(sc, RT2560_CSR3);
2471 addr[0] = tmp & 0xff;
2472 addr[1] = (tmp >> 8) & 0xff;
2473 addr[2] = (tmp >> 16) & 0xff;
2474 addr[3] = (tmp >> 24);
2476 tmp = RAL_READ(sc, RT2560_CSR4);
2477 addr[4] = tmp & 0xff;
2478 addr[5] = (tmp >> 8) & 0xff;
2482 rt2560_update_promisc(struct rt2560_softc *sc)
2484 struct ifnet *ifp = sc->sc_ic.ic_ifp;
2487 tmp = RAL_READ(sc, RT2560_RXCSR0);
2489 tmp &= ~RT2560_DROP_NOT_TO_ME;
2490 if (!(ifp->if_flags & IFF_PROMISC))
2491 tmp |= RT2560_DROP_NOT_TO_ME;
2493 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2495 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
2496 "entering" : "leaving"));
2500 rt2560_get_rf(int rev)
2503 case RT2560_RF_2522: return "RT2522";
2504 case RT2560_RF_2523: return "RT2523";
2505 case RT2560_RF_2524: return "RT2524";
2506 case RT2560_RF_2525: return "RT2525";
2507 case RT2560_RF_2525E: return "RT2525e";
2508 case RT2560_RF_2526: return "RT2526";
2509 case RT2560_RF_5222: return "RT5222";
2510 default: return "unknown";
2515 rt2560_read_eeprom(struct rt2560_softc *sc)
2520 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0);
2521 sc->rf_rev = (val >> 11) & 0x7;
2522 sc->hw_radio = (val >> 10) & 0x1;
2523 sc->led_mode = (val >> 6) & 0x7;
2524 sc->rx_ant = (val >> 4) & 0x3;
2525 sc->tx_ant = (val >> 2) & 0x3;
2526 sc->nb_ant = val & 0x3;
2528 /* read default values for BBP registers */
2529 for (i = 0; i < 16; i++) {
2530 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i);
2531 sc->bbp_prom[i].reg = val >> 8;
2532 sc->bbp_prom[i].val = val & 0xff;
2535 /* read Tx power for all b/g channels */
2536 for (i = 0; i < 14 / 2; i++) {
2537 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i);
2538 sc->txpow[i * 2] = val >> 8;
2539 sc->txpow[i * 2 + 1] = val & 0xff;
2544 rt2560_bbp_init(struct rt2560_softc *sc)
2546 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2549 /* wait for BBP to be ready */
2550 for (ntries = 0; ntries < 100; ntries++) {
2551 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0)
2555 if (ntries == 100) {
2556 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
2560 /* initialize BBP registers to default values */
2561 for (i = 0; i < N(rt2560_def_bbp); i++) {
2562 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg,
2563 rt2560_def_bbp[i].val);
2566 /* initialize BBP registers to values stored in EEPROM */
2567 for (i = 0; i < 16; i++) {
2568 if (sc->bbp_prom[i].reg == 0xff)
2570 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
2579 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna)
2584 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK;
2586 tx |= RT2560_BBP_ANTA;
2587 else if (antenna == 2)
2588 tx |= RT2560_BBP_ANTB;
2590 tx |= RT2560_BBP_DIVERSITY;
2592 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */
2593 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 ||
2594 sc->rf_rev == RT2560_RF_5222)
2595 tx |= RT2560_BBP_FLIPIQ;
2597 rt2560_bbp_write(sc, RT2560_BBP_TX, tx);
2599 /* update values for CCK and OFDM in BBPCSR1 */
2600 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007;
2601 tmp |= (tx & 0x7) << 16 | (tx & 0x7);
2602 RAL_WRITE(sc, RT2560_BBPCSR1, tmp);
2606 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna)
2610 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK;
2612 rx |= RT2560_BBP_ANTA;
2613 else if (antenna == 2)
2614 rx |= RT2560_BBP_ANTB;
2616 rx |= RT2560_BBP_DIVERSITY;
2618 /* need to force no I/Q flip for RF 2525e and 2526 */
2619 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526)
2620 rx &= ~RT2560_BBP_FLIPIQ;
2622 rt2560_bbp_write(sc, RT2560_BBP_RX, rx);
2626 rt2560_init(void *priv)
2628 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2629 struct rt2560_softc *sc = priv;
2630 struct ieee80211com *ic = &sc->sc_ic;
2631 struct ifnet *ifp = ic->ic_ifp;
2637 /* setup tx rings */
2638 tmp = RT2560_PRIO_RING_COUNT << 24 |
2639 RT2560_ATIM_RING_COUNT << 16 |
2640 RT2560_TX_RING_COUNT << 8 |
2641 RT2560_TX_DESC_SIZE;
2643 /* rings must be initialized in this exact order */
2644 RAL_WRITE(sc, RT2560_TXCSR2, tmp);
2645 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr);
2646 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr);
2647 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr);
2648 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr);
2651 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE;
2653 RAL_WRITE(sc, RT2560_RXCSR1, tmp);
2654 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr);
2656 /* initialize MAC registers to default values */
2657 for (i = 0; i < N(rt2560_def_mac); i++)
2658 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val);
2660 IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp));
2661 rt2560_set_macaddr(sc, ic->ic_myaddr);
2663 /* set basic rate set (will be updated later) */
2664 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153);
2666 rt2560_set_txantenna(sc, sc->tx_ant);
2667 rt2560_set_rxantenna(sc, sc->rx_ant);
2668 rt2560_update_slot(ifp);
2669 rt2560_update_plcp(sc);
2670 rt2560_update_led(sc, 0, 0);
2672 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2673 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY);
2675 if (rt2560_bbp_init(sc) != 0) {
2680 /* set default BSS channel */
2681 rt2560_set_chan(sc, ic->ic_curchan);
2684 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR;
2685 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2686 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR;
2687 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2688 tmp |= RT2560_DROP_TODS;
2689 if (!(ifp->if_flags & IFF_PROMISC))
2690 tmp |= RT2560_DROP_NOT_TO_ME;
2692 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2694 /* clear old FCS and Rx FIFO errors */
2695 RAL_READ(sc, RT2560_CNT0);
2696 RAL_READ(sc, RT2560_CNT4);
2698 /* clear any pending interrupts */
2699 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff);
2701 /* enable interrupts */
2702 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
2704 ifp->if_flags &= ~IFF_OACTIVE;
2705 ifp->if_flags |= IFF_RUNNING;
2708 if (ic->ic_flags & IEEE80211_F_PRIVACY) {
2711 ic->ic_flags &= ~IEEE80211_F_DROPUNENC;
2712 for (i = 0; i < IEEE80211_WEP_NKID; ++i) {
2713 struct ieee80211_key *wk = &ic->ic_nw_keys[i];
2715 if (wk->wk_keylen == 0)
2717 if (wk->wk_flags & IEEE80211_KEY_XMIT)
2718 wk->wk_flags |= IEEE80211_KEY_SWCRYPT;
2722 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2723 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
2724 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
2726 ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
2731 rt2560_stop(void *priv)
2733 struct rt2560_softc *sc = priv;
2734 struct ieee80211com *ic = &sc->sc_ic;
2735 struct ifnet *ifp = ic->ic_ifp;
2737 sc->sc_tx_timer = 0;
2739 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
2741 ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
2744 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX);
2747 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX);
2749 /* reset ASIC (imply reset BBP) */
2750 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2751 RAL_WRITE(sc, RT2560_CSR1, 0);
2753 /* disable interrupts */
2754 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
2756 /* reset Tx and Rx rings */
2757 rt2560_reset_tx_ring(sc, &sc->txq);
2758 rt2560_reset_tx_ring(sc, &sc->atimq);
2759 rt2560_reset_tx_ring(sc, &sc->prioq);
2760 rt2560_reset_tx_ring(sc, &sc->bcnq);
2761 rt2560_reset_rx_ring(sc, &sc->rxq);
2765 rt2560_dma_map_mbuf(void *arg, bus_dma_segment_t *seg, int nseg,
2766 bus_size_t map_size __unused, int error)
2771 KASSERT(nseg == 1, ("too many dma segments\n"));
2772 *((bus_addr_t *)arg) = seg->ds_addr;