4 * Copyright (c) 2005, 2006
5 * Damien Bergamini <damien.bergamini@free.fr>
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 #include <sys/cdefs.h>
21 __FBSDID("$FreeBSD$");
24 * Ralink Technology RT2560 chipset driver
25 * http://www.ralinktech.com/
28 #include <sys/param.h>
29 #include <sys/sysctl.h>
30 #include <sys/sockio.h>
32 #include <sys/kernel.h>
33 #include <sys/socket.h>
34 #include <sys/systm.h>
35 #include <sys/malloc.h>
37 #include <sys/mutex.h>
38 #include <sys/module.h>
40 #include <sys/endian.h>
42 #include <machine/bus.h>
43 #include <machine/resource.h>
48 #include <net/if_arp.h>
49 #include <net/ethernet.h>
50 #include <net/if_dl.h>
51 #include <net/if_media.h>
52 #include <net/if_types.h>
54 #include <net80211/ieee80211_var.h>
55 #include <net80211/ieee80211_radiotap.h>
57 #include <netinet/in.h>
58 #include <netinet/in_systm.h>
59 #include <netinet/in_var.h>
60 #include <netinet/ip.h>
61 #include <netinet/if_ether.h>
63 #include <dev/ral/if_ralrate.h>
64 #include <dev/ral/rt2560reg.h>
65 #include <dev/ral/rt2560var.h>
68 #define DPRINTF(x) do { if (ral_debug > 0) printf x; } while (0)
69 #define DPRINTFN(n, x) do { if (ral_debug >= (n)) printf x; } while (0)
73 #define DPRINTFN(n, x)
76 static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int,
78 static int rt2560_alloc_tx_ring(struct rt2560_softc *,
79 struct rt2560_tx_ring *, int);
80 static void rt2560_reset_tx_ring(struct rt2560_softc *,
81 struct rt2560_tx_ring *);
82 static void rt2560_free_tx_ring(struct rt2560_softc *,
83 struct rt2560_tx_ring *);
84 static int rt2560_alloc_rx_ring(struct rt2560_softc *,
85 struct rt2560_rx_ring *, int);
86 static void rt2560_reset_rx_ring(struct rt2560_softc *,
87 struct rt2560_rx_ring *);
88 static void rt2560_free_rx_ring(struct rt2560_softc *,
89 struct rt2560_rx_ring *);
90 static struct ieee80211_node *rt2560_node_alloc(
91 struct ieee80211_node_table *);
92 static int rt2560_media_change(struct ifnet *);
93 static void rt2560_next_scan(void *);
94 static void rt2560_iter_func(void *, struct ieee80211_node *);
95 static void rt2560_update_rssadapt(void *);
96 static int rt2560_newstate(struct ieee80211com *,
97 enum ieee80211_state, int);
98 static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t);
99 static void rt2560_encryption_intr(struct rt2560_softc *);
100 static void rt2560_tx_intr(struct rt2560_softc *);
101 static void rt2560_prio_intr(struct rt2560_softc *);
102 static void rt2560_decryption_intr(struct rt2560_softc *);
103 static void rt2560_rx_intr(struct rt2560_softc *);
104 static void rt2560_beacon_expire(struct rt2560_softc *);
105 static void rt2560_wakeup_expire(struct rt2560_softc *);
106 static uint8_t rt2560_rxrate(struct rt2560_rx_desc *);
107 static int rt2560_ack_rate(struct ieee80211com *, int);
108 static uint16_t rt2560_txtime(int, int, uint32_t);
109 static uint8_t rt2560_plcp_signal(int);
110 static void rt2560_setup_tx_desc(struct rt2560_softc *,
111 struct rt2560_tx_desc *, uint32_t, int, int, int,
113 static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *,
114 struct ieee80211_node *);
115 static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *,
116 struct ieee80211_node *);
117 static struct mbuf *rt2560_get_rts(struct rt2560_softc *,
118 struct ieee80211_frame *, uint16_t);
119 static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *,
120 struct ieee80211_node *);
121 static void rt2560_start(struct ifnet *);
122 static void rt2560_watchdog(void *);
123 static int rt2560_reset(struct ifnet *);
124 static int rt2560_ioctl(struct ifnet *, u_long, caddr_t);
125 static void rt2560_bbp_write(struct rt2560_softc *, uint8_t,
127 static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t);
128 static void rt2560_rf_write(struct rt2560_softc *, uint8_t,
130 static void rt2560_set_chan(struct rt2560_softc *,
131 struct ieee80211_channel *);
133 static void rt2560_disable_rf_tune(struct rt2560_softc *);
135 static void rt2560_enable_tsf_sync(struct rt2560_softc *);
136 static void rt2560_update_plcp(struct rt2560_softc *);
137 static void rt2560_update_slot(struct ifnet *);
138 static void rt2560_set_basicrates(struct rt2560_softc *);
139 static void rt2560_update_led(struct rt2560_softc *, int, int);
140 static void rt2560_set_bssid(struct rt2560_softc *, uint8_t *);
141 static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *);
142 static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *);
143 static void rt2560_update_promisc(struct rt2560_softc *);
144 static const char *rt2560_get_rf(int);
145 static void rt2560_read_eeprom(struct rt2560_softc *);
146 static int rt2560_bbp_init(struct rt2560_softc *);
147 static void rt2560_set_txantenna(struct rt2560_softc *, int);
148 static void rt2560_set_rxantenna(struct rt2560_softc *, int);
149 static void rt2560_init(void *);
150 static void rt2560_stop(void *);
151 static int rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *,
152 const struct ieee80211_bpf_params *);
154 static const struct {
157 } rt2560_def_mac[] = {
161 static const struct {
164 } rt2560_def_bbp[] = {
168 static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2;
169 static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2;
170 static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2;
171 static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2;
172 static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2;
173 static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2;
174 static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2;
175 static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2;
177 static const struct {
180 } rt2560_rf5222[] = {
185 rt2560_attach(device_t dev, int id)
187 struct rt2560_softc *sc = device_get_softc(dev);
188 struct ieee80211com *ic = &sc->sc_ic;
194 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
195 MTX_DEF | MTX_RECURSE);
197 callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0);
198 callout_init(&sc->scan_ch, debug_mpsafenet ? CALLOUT_MPSAFE : 0);
199 callout_init(&sc->rssadapt_ch, CALLOUT_MPSAFE);
201 /* retrieve RT2560 rev. no */
202 sc->asic_rev = RAL_READ(sc, RT2560_CSR0);
204 /* retrieve MAC address */
205 rt2560_get_macaddr(sc, ic->ic_myaddr);
207 /* retrieve RF rev. no and various other things from EEPROM */
208 rt2560_read_eeprom(sc);
210 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n",
211 sc->asic_rev, rt2560_get_rf(sc->rf_rev));
214 * Allocate Tx and Rx rings.
216 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT);
218 device_printf(sc->sc_dev, "could not allocate Tx ring\n");
222 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT);
224 device_printf(sc->sc_dev, "could not allocate ATIM ring\n");
228 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT);
230 device_printf(sc->sc_dev, "could not allocate Prio ring\n");
234 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT);
236 device_printf(sc->sc_dev, "could not allocate Beacon ring\n");
240 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT);
242 device_printf(sc->sc_dev, "could not allocate Rx ring\n");
246 ifp = sc->sc_ifp = if_alloc(IFT_ETHER);
248 device_printf(sc->sc_dev, "can not if_alloc()\n");
253 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
254 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
255 ifp->if_init = rt2560_init;
256 ifp->if_ioctl = rt2560_ioctl;
257 ifp->if_start = rt2560_start;
258 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
259 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
260 IFQ_SET_READY(&ifp->if_snd);
263 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
264 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */
265 ic->ic_state = IEEE80211_S_INIT;
267 /* set device capabilities */
269 IEEE80211_C_IBSS | /* IBSS mode supported */
270 IEEE80211_C_MONITOR | /* monitor mode supported */
271 IEEE80211_C_HOSTAP | /* HostAp mode supported */
272 IEEE80211_C_TXPMGT | /* tx power management */
273 IEEE80211_C_SHPREAMBLE | /* short preamble supported */
274 IEEE80211_C_SHSLOT | /* short slot time supported */
275 IEEE80211_C_WPA; /* 802.11i */
277 if (sc->rf_rev == RT2560_RF_5222) {
278 /* set supported .11a channels */
279 for (i = 36; i <= 64; i += 4) {
280 ic->ic_channels[i].ic_freq =
281 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
282 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
284 for (i = 100; i <= 140; i += 4) {
285 ic->ic_channels[i].ic_freq =
286 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
287 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
289 for (i = 149; i <= 161; i += 4) {
290 ic->ic_channels[i].ic_freq =
291 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
292 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
296 /* set supported .11b and .11g channels (1 through 14) */
297 for (i = 1; i <= 14; i++) {
298 ic->ic_channels[i].ic_freq =
299 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
300 ic->ic_channels[i].ic_flags =
301 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM |
302 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ;
305 ieee80211_ifattach(ic);
306 ic->ic_node_alloc = rt2560_node_alloc;
307 ic->ic_updateslot = rt2560_update_slot;
308 ic->ic_reset = rt2560_reset;
309 /* enable s/w bmiss handling in sta mode */
310 ic->ic_flags_ext |= IEEE80211_FEXT_SWBMISS;
312 /* override state transition machine */
313 sc->sc_newstate = ic->ic_newstate;
314 ic->ic_newstate = rt2560_newstate;
315 ic->ic_raw_xmit = rt2560_raw_xmit;
316 ieee80211_media_init(ic, rt2560_media_change, ieee80211_media_status);
318 bpfattach2(ifp, DLT_IEEE802_11_RADIO,
319 sizeof (struct ieee80211_frame) + 64, &sc->sc_drvbpf);
321 sc->sc_rxtap_len = sizeof sc->sc_rxtapu;
322 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
323 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2560_RX_RADIOTAP_PRESENT);
325 sc->sc_txtap_len = sizeof sc->sc_txtapu;
326 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
327 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2560_TX_RADIOTAP_PRESENT);
330 * Add a few sysctl knobs.
334 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
335 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
336 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)");
338 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
339 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
340 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)");
342 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
343 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "dwell",
344 CTLFLAG_RW, &sc->dwelltime, 0,
345 "channel dwell time (ms) for AP/station scanning");
348 ieee80211_announce(ic);
352 fail6: rt2560_free_rx_ring(sc, &sc->rxq);
353 fail5: rt2560_free_tx_ring(sc, &sc->bcnq);
354 fail4: rt2560_free_tx_ring(sc, &sc->prioq);
355 fail3: rt2560_free_tx_ring(sc, &sc->atimq);
356 fail2: rt2560_free_tx_ring(sc, &sc->txq);
357 fail1: mtx_destroy(&sc->sc_mtx);
363 rt2560_detach(void *xsc)
365 struct rt2560_softc *sc = xsc;
366 struct ieee80211com *ic = &sc->sc_ic;
367 struct ifnet *ifp = ic->ic_ifp;
370 callout_stop(&sc->watchdog_ch);
371 callout_stop(&sc->scan_ch);
372 callout_stop(&sc->rssadapt_ch);
375 ieee80211_ifdetach(ic);
377 rt2560_free_tx_ring(sc, &sc->txq);
378 rt2560_free_tx_ring(sc, &sc->atimq);
379 rt2560_free_tx_ring(sc, &sc->prioq);
380 rt2560_free_tx_ring(sc, &sc->bcnq);
381 rt2560_free_rx_ring(sc, &sc->rxq);
385 mtx_destroy(&sc->sc_mtx);
391 rt2560_shutdown(void *xsc)
393 struct rt2560_softc *sc = xsc;
399 rt2560_suspend(void *xsc)
401 struct rt2560_softc *sc = xsc;
407 rt2560_resume(void *xsc)
409 struct rt2560_softc *sc = xsc;
410 struct ifnet *ifp = sc->sc_ic.ic_ifp;
412 if (ifp->if_flags & IFF_UP) {
413 ifp->if_init(ifp->if_softc);
414 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
420 rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
425 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
427 *(bus_addr_t *)arg = segs[0].ds_addr;
431 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring,
438 ring->cur = ring->next = 0;
439 ring->cur_encrypt = ring->next_encrypt = 0;
441 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
442 BUS_SPACE_MAXADDR, NULL, NULL, count * RT2560_TX_DESC_SIZE, 1,
443 count * RT2560_TX_DESC_SIZE, 0, NULL, NULL, &ring->desc_dmat);
445 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
449 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
450 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
452 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
456 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
457 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
460 device_printf(sc->sc_dev, "could not load desc DMA map\n");
464 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF,
466 if (ring->data == NULL) {
467 device_printf(sc->sc_dev, "could not allocate soft data\n");
472 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
473 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, RT2560_MAX_SCATTER,
474 MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
476 device_printf(sc->sc_dev, "could not create data DMA tag\n");
480 for (i = 0; i < count; i++) {
481 error = bus_dmamap_create(ring->data_dmat, 0,
484 device_printf(sc->sc_dev, "could not create DMA map\n");
491 fail: rt2560_free_tx_ring(sc, ring);
496 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
498 struct rt2560_tx_desc *desc;
499 struct rt2560_tx_data *data;
502 for (i = 0; i < ring->count; i++) {
503 desc = &ring->desc[i];
504 data = &ring->data[i];
506 if (data->m != NULL) {
507 bus_dmamap_sync(ring->data_dmat, data->map,
508 BUS_DMASYNC_POSTWRITE);
509 bus_dmamap_unload(ring->data_dmat, data->map);
514 if (data->ni != NULL) {
515 ieee80211_free_node(data->ni);
522 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
525 ring->cur = ring->next = 0;
526 ring->cur_encrypt = ring->next_encrypt = 0;
530 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
532 struct rt2560_tx_data *data;
535 if (ring->desc != NULL) {
536 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
537 BUS_DMASYNC_POSTWRITE);
538 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
539 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
542 if (ring->desc_dmat != NULL)
543 bus_dma_tag_destroy(ring->desc_dmat);
545 if (ring->data != NULL) {
546 for (i = 0; i < ring->count; i++) {
547 data = &ring->data[i];
549 if (data->m != NULL) {
550 bus_dmamap_sync(ring->data_dmat, data->map,
551 BUS_DMASYNC_POSTWRITE);
552 bus_dmamap_unload(ring->data_dmat, data->map);
556 if (data->ni != NULL)
557 ieee80211_free_node(data->ni);
559 if (data->map != NULL)
560 bus_dmamap_destroy(ring->data_dmat, data->map);
563 free(ring->data, M_DEVBUF);
566 if (ring->data_dmat != NULL)
567 bus_dma_tag_destroy(ring->data_dmat);
571 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring,
574 struct rt2560_rx_desc *desc;
575 struct rt2560_rx_data *data;
580 ring->cur = ring->next = 0;
581 ring->cur_decrypt = 0;
583 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
584 BUS_SPACE_MAXADDR, NULL, NULL, count * RT2560_RX_DESC_SIZE, 1,
585 count * RT2560_RX_DESC_SIZE, 0, NULL, NULL, &ring->desc_dmat);
587 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
591 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
592 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
594 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
598 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
599 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
602 device_printf(sc->sc_dev, "could not load desc DMA map\n");
606 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF,
608 if (ring->data == NULL) {
609 device_printf(sc->sc_dev, "could not allocate soft data\n");
615 * Pre-allocate Rx buffers and populate Rx ring.
617 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
618 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
619 NULL, &ring->data_dmat);
621 device_printf(sc->sc_dev, "could not create data DMA tag\n");
625 for (i = 0; i < count; i++) {
626 desc = &sc->rxq.desc[i];
627 data = &sc->rxq.data[i];
629 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
631 device_printf(sc->sc_dev, "could not create DMA map\n");
635 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
636 if (data->m == NULL) {
637 device_printf(sc->sc_dev,
638 "could not allocate rx mbuf\n");
643 error = bus_dmamap_load(ring->data_dmat, data->map,
644 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr,
647 device_printf(sc->sc_dev,
648 "could not load rx buf DMA map");
652 desc->flags = htole32(RT2560_RX_BUSY);
653 desc->physaddr = htole32(physaddr);
656 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
660 fail: rt2560_free_rx_ring(sc, ring);
665 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
669 for (i = 0; i < ring->count; i++) {
670 ring->desc[i].flags = htole32(RT2560_RX_BUSY);
671 ring->data[i].drop = 0;
674 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
676 ring->cur = ring->next = 0;
677 ring->cur_decrypt = 0;
681 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
683 struct rt2560_rx_data *data;
686 if (ring->desc != NULL) {
687 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
688 BUS_DMASYNC_POSTWRITE);
689 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
690 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
693 if (ring->desc_dmat != NULL)
694 bus_dma_tag_destroy(ring->desc_dmat);
696 if (ring->data != NULL) {
697 for (i = 0; i < ring->count; i++) {
698 data = &ring->data[i];
700 if (data->m != NULL) {
701 bus_dmamap_sync(ring->data_dmat, data->map,
702 BUS_DMASYNC_POSTREAD);
703 bus_dmamap_unload(ring->data_dmat, data->map);
707 if (data->map != NULL)
708 bus_dmamap_destroy(ring->data_dmat, data->map);
711 free(ring->data, M_DEVBUF);
714 if (ring->data_dmat != NULL)
715 bus_dma_tag_destroy(ring->data_dmat);
718 static struct ieee80211_node *
719 rt2560_node_alloc(struct ieee80211_node_table *nt)
721 struct rt2560_node *rn;
723 rn = malloc(sizeof (struct rt2560_node), M_80211_NODE,
726 return (rn != NULL) ? &rn->ni : NULL;
730 rt2560_media_change(struct ifnet *ifp)
732 struct rt2560_softc *sc = ifp->if_softc;
735 error = ieee80211_media_change(ifp);
736 if (error != ENETRESET)
739 if ((ifp->if_flags & IFF_UP) &&
740 (ifp->if_drv_flags & IFF_DRV_RUNNING))
747 * This function is called periodically (every 200ms) during scanning to
748 * switch from one channel to another.
751 rt2560_next_scan(void *arg)
753 struct rt2560_softc *sc = arg;
754 struct ieee80211com *ic = &sc->sc_ic;
756 if (ic->ic_state == IEEE80211_S_SCAN)
757 ieee80211_next_scan(ic);
761 * This function is called for each node present in the node station table.
764 rt2560_iter_func(void *arg, struct ieee80211_node *ni)
766 struct rt2560_node *rn = (struct rt2560_node *)ni;
768 ral_rssadapt_updatestats(&rn->rssadapt);
772 * This function is called periodically (every 100ms) in RUN state to update
773 * the rate adaptation statistics.
776 rt2560_update_rssadapt(void *arg)
778 struct rt2560_softc *sc = arg;
779 struct ieee80211com *ic = &sc->sc_ic;
783 ieee80211_iterate_nodes(&ic->ic_sta, rt2560_iter_func, arg);
784 callout_reset(&sc->rssadapt_ch, hz / 10, rt2560_update_rssadapt, sc);
790 rt2560_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
792 struct rt2560_softc *sc = ic->ic_ifp->if_softc;
793 enum ieee80211_state ostate;
794 struct ieee80211_node *ni;
798 ostate = ic->ic_state;
799 callout_stop(&sc->scan_ch);
802 case IEEE80211_S_INIT:
803 callout_stop(&sc->rssadapt_ch);
805 if (ostate == IEEE80211_S_RUN) {
806 /* abort TSF synchronization */
807 RAL_WRITE(sc, RT2560_CSR14, 0);
809 /* turn association led off */
810 rt2560_update_led(sc, 0, 0);
814 case IEEE80211_S_SCAN:
815 rt2560_set_chan(sc, ic->ic_curchan);
816 callout_reset(&sc->scan_ch, (sc->dwelltime * hz) / 1000,
817 rt2560_next_scan, sc);
820 case IEEE80211_S_AUTH:
821 rt2560_set_chan(sc, ic->ic_curchan);
824 case IEEE80211_S_ASSOC:
825 rt2560_set_chan(sc, ic->ic_curchan);
828 case IEEE80211_S_RUN:
829 rt2560_set_chan(sc, ic->ic_curchan);
833 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
834 rt2560_update_plcp(sc);
835 rt2560_set_basicrates(sc);
836 rt2560_set_bssid(sc, ni->ni_bssid);
839 if (ic->ic_opmode == IEEE80211_M_HOSTAP ||
840 ic->ic_opmode == IEEE80211_M_IBSS) {
841 m = ieee80211_beacon_alloc(ic, ni, &sc->sc_bo);
843 device_printf(sc->sc_dev,
844 "could not allocate beacon\n");
849 ieee80211_ref_node(ni);
850 error = rt2560_tx_bcn(sc, m, ni);
855 /* turn assocation led on */
856 rt2560_update_led(sc, 1, 0);
858 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
859 callout_reset(&sc->rssadapt_ch, hz / 10,
860 rt2560_update_rssadapt, sc);
862 rt2560_enable_tsf_sync(sc);
867 return (error != 0) ? error : sc->sc_newstate(ic, nstate, arg);
871 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or
875 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr)
881 /* clock C once before the first command */
882 RT2560_EEPROM_CTL(sc, 0);
884 RT2560_EEPROM_CTL(sc, RT2560_S);
885 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
886 RT2560_EEPROM_CTL(sc, RT2560_S);
888 /* write start bit (1) */
889 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
890 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
892 /* write READ opcode (10) */
893 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
894 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
895 RT2560_EEPROM_CTL(sc, RT2560_S);
896 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
898 /* write address (A5-A0 or A7-A0) */
899 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7;
900 for (; n >= 0; n--) {
901 RT2560_EEPROM_CTL(sc, RT2560_S |
902 (((addr >> n) & 1) << RT2560_SHIFT_D));
903 RT2560_EEPROM_CTL(sc, RT2560_S |
904 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C);
907 RT2560_EEPROM_CTL(sc, RT2560_S);
909 /* read data Q15-Q0 */
911 for (n = 15; n >= 0; n--) {
912 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
913 tmp = RAL_READ(sc, RT2560_CSR21);
914 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n;
915 RT2560_EEPROM_CTL(sc, RT2560_S);
918 RT2560_EEPROM_CTL(sc, 0);
920 /* clear Chip Select and clock C */
921 RT2560_EEPROM_CTL(sc, RT2560_S);
922 RT2560_EEPROM_CTL(sc, 0);
923 RT2560_EEPROM_CTL(sc, RT2560_C);
929 * Some frames were processed by the hardware cipher engine and are ready for
933 rt2560_encryption_intr(struct rt2560_softc *sc)
935 struct rt2560_tx_desc *desc;
938 /* retrieve last descriptor index processed by cipher engine */
939 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr;
940 hw /= RT2560_TX_DESC_SIZE;
942 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
943 BUS_DMASYNC_POSTREAD);
945 for (; sc->txq.next_encrypt != hw;) {
946 desc = &sc->txq.desc[sc->txq.next_encrypt];
948 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
949 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY))
952 /* for TKIP, swap eiv field to fix a bug in ASIC */
953 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) ==
954 RT2560_TX_CIPHER_TKIP)
955 desc->eiv = bswap32(desc->eiv);
957 /* mark the frame ready for transmission */
958 desc->flags |= htole32(RT2560_TX_BUSY | RT2560_TX_VALID);
960 DPRINTFN(15, ("encryption done idx=%u\n",
961 sc->txq.next_encrypt));
963 sc->txq.next_encrypt =
964 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT;
967 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
968 BUS_DMASYNC_PREWRITE);
971 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX);
975 rt2560_tx_intr(struct rt2560_softc *sc)
977 struct ieee80211com *ic = &sc->sc_ic;
978 struct ifnet *ifp = ic->ic_ifp;
979 struct rt2560_tx_desc *desc;
980 struct rt2560_tx_data *data;
981 struct rt2560_node *rn;
983 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
984 BUS_DMASYNC_POSTREAD);
987 desc = &sc->txq.desc[sc->txq.next];
988 data = &sc->txq.data[sc->txq.next];
990 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
991 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY) ||
992 !(le32toh(desc->flags) & RT2560_TX_VALID))
995 rn = (struct rt2560_node *)data->ni;
997 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) {
998 case RT2560_TX_SUCCESS:
999 DPRINTFN(10, ("data frame sent successfully\n"));
1000 if (data->id.id_node != NULL) {
1001 ral_rssadapt_raise_rate(ic, &rn->rssadapt,
1007 case RT2560_TX_SUCCESS_RETRY:
1008 DPRINTFN(9, ("data frame sent after %u retries\n",
1009 (le32toh(desc->flags) >> 5) & 0x7));
1013 case RT2560_TX_FAIL_RETRY:
1014 DPRINTFN(9, ("sending data frame failed (too much "
1016 if (data->id.id_node != NULL) {
1017 ral_rssadapt_lower_rate(ic, data->ni,
1018 &rn->rssadapt, &data->id);
1023 case RT2560_TX_FAIL_INVALID:
1024 case RT2560_TX_FAIL_OTHER:
1026 device_printf(sc->sc_dev, "sending data frame failed "
1027 "0x%08x\n", le32toh(desc->flags));
1031 bus_dmamap_sync(sc->txq.data_dmat, data->map,
1032 BUS_DMASYNC_POSTWRITE);
1033 bus_dmamap_unload(sc->txq.data_dmat, data->map);
1036 ieee80211_free_node(data->ni);
1039 /* descriptor is no longer valid */
1040 desc->flags &= ~htole32(RT2560_TX_VALID);
1042 DPRINTFN(15, ("tx done idx=%u\n", sc->txq.next));
1045 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT;
1048 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1049 BUS_DMASYNC_PREWRITE);
1051 sc->sc_tx_timer = 0;
1052 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1057 rt2560_prio_intr(struct rt2560_softc *sc)
1059 struct ieee80211com *ic = &sc->sc_ic;
1060 struct ifnet *ifp = ic->ic_ifp;
1061 struct rt2560_tx_desc *desc;
1062 struct rt2560_tx_data *data;
1064 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1065 BUS_DMASYNC_POSTREAD);
1068 desc = &sc->prioq.desc[sc->prioq.next];
1069 data = &sc->prioq.data[sc->prioq.next];
1071 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
1072 !(le32toh(desc->flags) & RT2560_TX_VALID))
1075 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) {
1076 case RT2560_TX_SUCCESS:
1077 DPRINTFN(10, ("mgt frame sent successfully\n"));
1080 case RT2560_TX_SUCCESS_RETRY:
1081 DPRINTFN(9, ("mgt frame sent after %u retries\n",
1082 (le32toh(desc->flags) >> 5) & 0x7));
1085 case RT2560_TX_FAIL_RETRY:
1086 DPRINTFN(9, ("sending mgt frame failed (too much "
1090 case RT2560_TX_FAIL_INVALID:
1091 case RT2560_TX_FAIL_OTHER:
1093 device_printf(sc->sc_dev, "sending mgt frame failed "
1094 "0x%08x\n", le32toh(desc->flags));
1097 bus_dmamap_sync(sc->prioq.data_dmat, data->map,
1098 BUS_DMASYNC_POSTWRITE);
1099 bus_dmamap_unload(sc->prioq.data_dmat, data->map);
1102 ieee80211_free_node(data->ni);
1105 /* descriptor is no longer valid */
1106 desc->flags &= ~htole32(RT2560_TX_VALID);
1108 DPRINTFN(15, ("prio done idx=%u\n", sc->prioq.next));
1111 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT;
1114 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1115 BUS_DMASYNC_PREWRITE);
1117 sc->sc_tx_timer = 0;
1118 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1123 * Some frames were processed by the hardware cipher engine and are ready for
1124 * transmission to the IEEE802.11 layer.
1127 rt2560_decryption_intr(struct rt2560_softc *sc)
1129 struct ieee80211com *ic = &sc->sc_ic;
1130 struct ifnet *ifp = ic->ic_ifp;
1131 struct rt2560_rx_desc *desc;
1132 struct rt2560_rx_data *data;
1133 bus_addr_t physaddr;
1134 struct ieee80211_frame *wh;
1135 struct ieee80211_node *ni;
1136 struct rt2560_node *rn;
1137 struct mbuf *mnew, *m;
1140 /* retrieve last decriptor index processed by cipher engine */
1141 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr;
1142 hw /= RT2560_RX_DESC_SIZE;
1144 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1145 BUS_DMASYNC_POSTREAD);
1147 for (; sc->rxq.cur_decrypt != hw;) {
1148 desc = &sc->rxq.desc[sc->rxq.cur_decrypt];
1149 data = &sc->rxq.data[sc->rxq.cur_decrypt];
1151 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1152 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1160 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 &&
1161 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) {
1167 * Try to allocate a new mbuf for this ring element and load it
1168 * before processing the current mbuf. If the ring element
1169 * cannot be loaded, drop the received packet and reuse the old
1170 * mbuf. In the unlikely case that the old mbuf can't be
1171 * reloaded either, explicitly panic.
1173 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1179 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1180 BUS_DMASYNC_POSTREAD);
1181 bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1183 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1184 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr,
1189 /* try to reload the old mbuf */
1190 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1191 mtod(data->m, void *), MCLBYTES,
1192 rt2560_dma_map_addr, &physaddr, 0);
1194 /* very unlikely that it will fail... */
1195 panic("%s: could not load old rx mbuf",
1196 device_get_name(sc->sc_dev));
1203 * New mbuf successfully loaded, update Rx ring and continue
1208 desc->physaddr = htole32(physaddr);
1211 m->m_pkthdr.rcvif = ifp;
1212 m->m_pkthdr.len = m->m_len =
1213 (le32toh(desc->flags) >> 16) & 0xfff;
1215 if (bpf_peers_present(sc->sc_drvbpf)) {
1216 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap;
1217 uint32_t tsf_lo, tsf_hi;
1219 /* get timestamp (low and high 32 bits) */
1220 tsf_hi = RAL_READ(sc, RT2560_CSR17);
1221 tsf_lo = RAL_READ(sc, RT2560_CSR16);
1224 htole64(((uint64_t)tsf_hi << 32) | tsf_lo);
1226 tap->wr_rate = rt2560_rxrate(desc);
1227 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
1228 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
1229 tap->wr_antenna = sc->rx_ant;
1230 tap->wr_antsignal = desc->rssi;
1232 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m);
1235 wh = mtod(m, struct ieee80211_frame *);
1236 ni = ieee80211_find_rxnode(ic,
1237 (struct ieee80211_frame_min *)wh);
1239 /* send the frame to the 802.11 layer */
1240 ieee80211_input(ic, m, ni, desc->rssi, 0);
1242 /* give rssi to the rate adatation algorithm */
1243 rn = (struct rt2560_node *)ni;
1244 ral_rssadapt_input(ic, ni, &rn->rssadapt, desc->rssi);
1246 /* node is no longer needed */
1247 ieee80211_free_node(ni);
1249 skip: desc->flags = htole32(RT2560_RX_BUSY);
1251 DPRINTFN(15, ("decryption done idx=%u\n", sc->rxq.cur_decrypt));
1253 sc->rxq.cur_decrypt =
1254 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT;
1257 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1258 BUS_DMASYNC_PREWRITE);
1262 * Some frames were received. Pass them to the hardware cipher engine before
1263 * sending them to the 802.11 layer.
1266 rt2560_rx_intr(struct rt2560_softc *sc)
1268 struct rt2560_rx_desc *desc;
1269 struct rt2560_rx_data *data;
1271 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1272 BUS_DMASYNC_POSTREAD);
1275 desc = &sc->rxq.desc[sc->rxq.cur];
1276 data = &sc->rxq.data[sc->rxq.cur];
1278 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1279 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1284 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) ||
1285 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) {
1287 * This should not happen since we did not request
1288 * to receive those frames when we filled RXCSR0.
1290 DPRINTFN(5, ("PHY or CRC error flags 0x%08x\n",
1291 le32toh(desc->flags)));
1295 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) {
1296 DPRINTFN(5, ("bad length\n"));
1300 /* mark the frame for decryption */
1301 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY);
1303 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1305 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT;
1308 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1309 BUS_DMASYNC_PREWRITE);
1312 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT);
1316 * This function is called periodically in IBSS mode when a new beacon must be
1320 rt2560_beacon_expire(struct rt2560_softc *sc)
1322 struct ieee80211com *ic = &sc->sc_ic;
1323 struct rt2560_tx_data *data;
1325 if (ic->ic_opmode != IEEE80211_M_IBSS &&
1326 ic->ic_opmode != IEEE80211_M_HOSTAP)
1329 data = &sc->bcnq.data[sc->bcnq.next];
1331 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
1332 bus_dmamap_unload(sc->bcnq.data_dmat, data->map);
1334 ieee80211_beacon_update(ic, data->ni, &sc->sc_bo, data->m, 1);
1336 if (bpf_peers_present(ic->ic_rawbpf))
1337 bpf_mtap(ic->ic_rawbpf, data->m);
1339 rt2560_tx_bcn(sc, data->m, data->ni);
1341 DPRINTFN(15, ("beacon expired\n"));
1343 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT;
1348 rt2560_wakeup_expire(struct rt2560_softc *sc)
1350 DPRINTFN(2, ("wakeup expired\n"));
1354 rt2560_intr(void *arg)
1356 struct rt2560_softc *sc = arg;
1357 struct ifnet *ifp = sc->sc_ifp;
1362 /* disable interrupts */
1363 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
1365 /* don't re-enable interrupts if we're shutting down */
1366 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1371 r = RAL_READ(sc, RT2560_CSR7);
1372 RAL_WRITE(sc, RT2560_CSR7, r);
1374 if (r & RT2560_BEACON_EXPIRE)
1375 rt2560_beacon_expire(sc);
1377 if (r & RT2560_WAKEUP_EXPIRE)
1378 rt2560_wakeup_expire(sc);
1380 if (r & RT2560_ENCRYPTION_DONE)
1381 rt2560_encryption_intr(sc);
1383 if (r & RT2560_TX_DONE)
1386 if (r & RT2560_PRIO_DONE)
1387 rt2560_prio_intr(sc);
1389 if (r & RT2560_DECRYPTION_DONE)
1390 rt2560_decryption_intr(sc);
1392 if (r & RT2560_RX_DONE)
1395 /* re-enable interrupts */
1396 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
1401 /* quickly determine if a given rate is CCK or OFDM */
1402 #define RAL_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
1404 #define RAL_ACK_SIZE 14 /* 10 + 4(FCS) */
1405 #define RAL_CTS_SIZE 14 /* 10 + 4(FCS) */
1407 #define RAL_SIFS 10 /* us */
1409 #define RT2560_TXRX_TURNAROUND 10 /* us */
1412 * This function is only used by the Rx radiotap code.
1415 rt2560_rxrate(struct rt2560_rx_desc *desc)
1417 if (le32toh(desc->flags) & RT2560_RX_OFDM) {
1418 /* reverse function of rt2560_plcp_signal */
1419 switch (desc->rate) {
1420 case 0xb: return 12;
1421 case 0xf: return 18;
1422 case 0xa: return 24;
1423 case 0xe: return 36;
1424 case 0x9: return 48;
1425 case 0xd: return 72;
1426 case 0x8: return 96;
1427 case 0xc: return 108;
1430 if (desc->rate == 10)
1432 if (desc->rate == 20)
1434 if (desc->rate == 55)
1436 if (desc->rate == 110)
1439 return 2; /* should not get there */
1443 * Return the expected ack rate for a frame transmitted at rate `rate'.
1444 * XXX: this should depend on the destination node basic rate set.
1447 rt2560_ack_rate(struct ieee80211com *ic, int rate)
1456 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate;
1472 /* default to 1Mbps */
1477 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'.
1478 * The function automatically determines the operating mode depending on the
1479 * given rate. `flags' indicates whether short preamble is in use or not.
1482 rt2560_txtime(int len, int rate, uint32_t flags)
1486 if (RAL_RATE_IS_OFDM(rate)) {
1487 /* IEEE Std 802.11a-1999, pp. 37 */
1488 txtime = (8 + 4 * len + 3 + rate - 1) / rate;
1489 txtime = 16 + 4 + 4 * txtime + 6;
1491 /* IEEE Std 802.11b-1999, pp. 28 */
1492 txtime = (16 * len + rate - 1) / rate;
1493 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE))
1503 rt2560_plcp_signal(int rate)
1506 /* CCK rates (returned values are device-dependent) */
1509 case 11: return 0x2;
1510 case 22: return 0x3;
1512 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1513 case 12: return 0xb;
1514 case 18: return 0xf;
1515 case 24: return 0xa;
1516 case 36: return 0xe;
1517 case 48: return 0x9;
1518 case 72: return 0xd;
1519 case 96: return 0x8;
1520 case 108: return 0xc;
1522 /* unsupported rates (should not get there) */
1523 default: return 0xff;
1528 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc,
1529 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr)
1531 struct ieee80211com *ic = &sc->sc_ic;
1532 uint16_t plcp_length;
1535 desc->flags = htole32(flags);
1536 desc->flags |= htole32(len << 16);
1537 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) :
1538 htole32(RT2560_TX_BUSY | RT2560_TX_VALID);
1540 desc->physaddr = htole32(physaddr);
1541 desc->wme = htole16(
1543 RT2560_LOGCWMIN(3) |
1544 RT2560_LOGCWMAX(8));
1546 /* setup PLCP fields */
1547 desc->plcp_signal = rt2560_plcp_signal(rate);
1548 desc->plcp_service = 4;
1550 len += IEEE80211_CRC_LEN;
1551 if (RAL_RATE_IS_OFDM(rate)) {
1552 desc->flags |= htole32(RT2560_TX_OFDM);
1554 plcp_length = len & 0xfff;
1555 desc->plcp_length_hi = plcp_length >> 6;
1556 desc->plcp_length_lo = plcp_length & 0x3f;
1558 plcp_length = (16 * len + rate - 1) / rate;
1560 remainder = (16 * len) % 22;
1561 if (remainder != 0 && remainder < 7)
1562 desc->plcp_service |= RT2560_PLCP_LENGEXT;
1564 desc->plcp_length_hi = plcp_length >> 8;
1565 desc->plcp_length_lo = plcp_length & 0xff;
1567 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1568 desc->plcp_signal |= 0x08;
1573 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0,
1574 struct ieee80211_node *ni)
1576 struct ieee80211com *ic = &sc->sc_ic;
1577 struct rt2560_tx_desc *desc;
1578 struct rt2560_tx_data *data;
1579 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1580 int nsegs, rate, error;
1582 desc = &sc->bcnq.desc[sc->bcnq.cur];
1583 data = &sc->bcnq.data[sc->bcnq.cur];
1585 rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2;
1587 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0,
1588 segs, &nsegs, BUS_DMA_NOWAIT);
1590 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1596 if (bpf_peers_present(sc->sc_drvbpf)) {
1597 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1600 tap->wt_rate = rate;
1601 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1602 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1603 tap->wt_antenna = sc->tx_ant;
1605 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1611 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF |
1612 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr);
1614 DPRINTFN(10, ("sending beacon frame len=%u idx=%u rate=%u\n",
1615 m0->m_pkthdr.len, sc->bcnq.cur, rate));
1617 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1618 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map,
1619 BUS_DMASYNC_PREWRITE);
1621 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT;
1627 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0,
1628 struct ieee80211_node *ni)
1630 struct ieee80211com *ic = &sc->sc_ic;
1631 struct rt2560_tx_desc *desc;
1632 struct rt2560_tx_data *data;
1633 struct ieee80211_frame *wh;
1634 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1637 int nsegs, rate, error;
1639 desc = &sc->prioq.desc[sc->prioq.cur];
1640 data = &sc->prioq.data[sc->prioq.cur];
1642 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1644 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
1647 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1653 if (bpf_peers_present(sc->sc_drvbpf)) {
1654 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1657 tap->wt_rate = rate;
1658 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1659 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1660 tap->wt_antenna = sc->tx_ant;
1662 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1668 wh = mtod(m0, struct ieee80211_frame *);
1670 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1671 flags |= RT2560_TX_ACK;
1673 dur = rt2560_txtime(RAL_ACK_SIZE, rate, ic->ic_flags) +
1675 *(uint16_t *)wh->i_dur = htole16(dur);
1677 /* tell hardware to add timestamp for probe responses */
1678 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
1679 IEEE80211_FC0_TYPE_MGT &&
1680 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) ==
1681 IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1682 flags |= RT2560_TX_TIMESTAMP;
1685 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0,
1688 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1689 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1690 BUS_DMASYNC_PREWRITE);
1692 DPRINTFN(10, ("sending mgt frame len=%u idx=%u rate=%u\n",
1693 m0->m_pkthdr.len, sc->prioq.cur, rate));
1697 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1698 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1704 rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0,
1705 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
1707 struct ieee80211com *ic = &sc->sc_ic;
1708 struct rt2560_tx_desc *desc;
1709 struct rt2560_tx_data *data;
1710 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1712 int nsegs, rate, error;
1714 desc = &sc->prioq.desc[sc->prioq.cur];
1715 data = &sc->prioq.data[sc->prioq.cur];
1717 rate = params->ibp_rate0 & IEEE80211_RATE_VAL;
1724 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
1727 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1733 if (bpf_peers_present(sc->sc_drvbpf)) {
1734 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1737 tap->wt_rate = rate;
1738 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1739 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1740 tap->wt_antenna = sc->tx_ant;
1742 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1749 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
1750 flags |= RT2560_TX_ACK;
1752 /* XXX need to setup descriptor ourself */
1753 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len,
1754 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0,
1757 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1758 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1759 BUS_DMASYNC_PREWRITE);
1761 DPRINTFN(10, ("sending raw frame len=%u idx=%u rate=%u\n",
1762 m0->m_pkthdr.len, sc->prioq.cur, rate));
1766 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1767 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1773 * Build a RTS control frame.
1775 static struct mbuf *
1776 rt2560_get_rts(struct rt2560_softc *sc, struct ieee80211_frame *wh,
1779 struct ieee80211_frame_rts *rts;
1782 MGETHDR(m, M_DONTWAIT, MT_DATA);
1784 sc->sc_ic.ic_stats.is_tx_nobuf++;
1785 device_printf(sc->sc_dev, "could not allocate RTS frame\n");
1789 rts = mtod(m, struct ieee80211_frame_rts *);
1791 rts->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_CTL |
1792 IEEE80211_FC0_SUBTYPE_RTS;
1793 rts->i_fc[1] = IEEE80211_FC1_DIR_NODS;
1794 *(uint16_t *)rts->i_dur = htole16(dur);
1795 IEEE80211_ADDR_COPY(rts->i_ra, wh->i_addr1);
1796 IEEE80211_ADDR_COPY(rts->i_ta, wh->i_addr2);
1798 m->m_pkthdr.len = m->m_len = sizeof (struct ieee80211_frame_rts);
1804 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0,
1805 struct ieee80211_node *ni)
1807 struct ieee80211com *ic = &sc->sc_ic;
1808 struct rt2560_tx_desc *desc;
1809 struct rt2560_tx_data *data;
1810 struct rt2560_node *rn;
1811 struct ieee80211_rateset *rs;
1812 struct ieee80211_frame *wh;
1813 struct ieee80211_key *k;
1815 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1818 int nsegs, rate, error;
1820 wh = mtod(m0, struct ieee80211_frame *);
1822 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
1823 rs = &ic->ic_sup_rates[ic->ic_curmode];
1824 rate = rs->rs_rates[ic->ic_fixed_rate];
1827 rn = (struct rt2560_node *)ni;
1828 ni->ni_txrate = ral_rssadapt_choose(&rn->rssadapt, rs, wh,
1829 m0->m_pkthdr.len, NULL, 0);
1830 rate = rs->rs_rates[ni->ni_txrate];
1832 rate &= IEEE80211_RATE_VAL;
1834 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1835 k = ieee80211_crypto_encap(ic, ni, m0);
1841 /* packet header may have moved, reset our local pointer */
1842 wh = mtod(m0, struct ieee80211_frame *);
1846 * IEEE Std 802.11-1999, pp 82: "A STA shall use an RTS/CTS exchange
1847 * for directed frames only when the length of the MPDU is greater
1848 * than the length threshold indicated by [...]" ic_rtsthreshold.
1850 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) &&
1851 m0->m_pkthdr.len > ic->ic_rtsthreshold) {
1854 int rtsrate, ackrate;
1856 rtsrate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1857 ackrate = rt2560_ack_rate(ic, rate);
1859 dur = rt2560_txtime(m0->m_pkthdr.len + 4, rate, ic->ic_flags) +
1860 rt2560_txtime(RAL_CTS_SIZE, rtsrate, ic->ic_flags) +
1861 rt2560_txtime(RAL_ACK_SIZE, ackrate, ic->ic_flags) +
1864 m = rt2560_get_rts(sc, wh, dur);
1866 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1867 data = &sc->txq.data[sc->txq.cur_encrypt];
1869 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
1870 m, segs, &nsegs, 0);
1872 device_printf(sc->sc_dev,
1873 "could not map mbuf (error %d)\n", error);
1879 /* avoid multiple free() of the same node for each fragment */
1880 ieee80211_ref_node(ni);
1885 /* RTS frames are not taken into account for rssadapt */
1886 data->id.id_node = NULL;
1888 rt2560_setup_tx_desc(sc, desc, RT2560_TX_ACK |
1889 RT2560_TX_MORE_FRAG, m->m_pkthdr.len, rtsrate, 1,
1892 bus_dmamap_sync(sc->txq.data_dmat, data->map,
1893 BUS_DMASYNC_PREWRITE);
1896 sc->txq.cur_encrypt =
1897 (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1900 * IEEE Std 802.11-1999: when an RTS/CTS exchange is used, the
1901 * asynchronous data frame shall be transmitted after the CTS
1902 * frame and a SIFS period.
1904 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS;
1907 data = &sc->txq.data[sc->txq.cur_encrypt];
1908 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1910 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0,
1912 if (error != 0 && error != EFBIG) {
1913 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1919 mnew = m_defrag(m0, M_DONTWAIT);
1921 device_printf(sc->sc_dev,
1922 "could not defragment mbuf\n");
1928 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
1929 m0, segs, &nsegs, 0);
1931 device_printf(sc->sc_dev,
1932 "could not map mbuf (error %d)\n", error);
1937 /* packet header may have moved, reset our local pointer */
1938 wh = mtod(m0, struct ieee80211_frame *);
1941 if (bpf_peers_present(sc->sc_drvbpf)) {
1942 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1945 tap->wt_rate = rate;
1946 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1947 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1948 tap->wt_antenna = sc->tx_ant;
1950 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1956 /* remember link conditions for rate adaptation algorithm */
1957 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) {
1958 data->id.id_len = m0->m_pkthdr.len;
1959 data->id.id_rateidx = ni->ni_txrate;
1960 data->id.id_node = ni;
1961 data->id.id_rssi = ni->ni_rssi;
1963 data->id.id_node = NULL;
1965 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1966 flags |= RT2560_TX_ACK;
1968 dur = rt2560_txtime(RAL_ACK_SIZE, rt2560_ack_rate(ic, rate),
1969 ic->ic_flags) + RAL_SIFS;
1970 *(uint16_t *)wh->i_dur = htole16(dur);
1973 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1,
1976 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1977 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1978 BUS_DMASYNC_PREWRITE);
1980 DPRINTFN(10, ("sending data frame len=%u idx=%u rate=%u\n",
1981 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate));
1985 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1986 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT);
1992 rt2560_start(struct ifnet *ifp)
1994 struct rt2560_softc *sc = ifp->if_softc;
1995 struct ieee80211com *ic = &sc->sc_ic;
1997 struct ether_header *eh;
1998 struct ieee80211_node *ni;
2002 /* prevent management frames from being sent if we're not ready */
2003 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2009 IF_POLL(&ic->ic_mgtq, m0);
2011 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) {
2012 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2015 IF_DEQUEUE(&ic->ic_mgtq, m0);
2017 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif;
2018 m0->m_pkthdr.rcvif = NULL;
2020 if (bpf_peers_present(ic->ic_rawbpf))
2021 bpf_mtap(ic->ic_rawbpf, m0);
2023 if (rt2560_tx_mgt(sc, m0, ni) != 0)
2027 if (ic->ic_state != IEEE80211_S_RUN)
2029 IFQ_DRV_DEQUEUE(&ifp->if_snd, m0);
2032 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) {
2033 IFQ_DRV_PREPEND(&ifp->if_snd, m0);
2034 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2038 if (m0->m_len < sizeof (struct ether_header) &&
2039 !(m0 = m_pullup(m0, sizeof (struct ether_header))))
2042 eh = mtod(m0, struct ether_header *);
2043 ni = ieee80211_find_txnode(ic, eh->ether_dhost);
2050 m0 = ieee80211_encap(ic, m0, ni);
2052 ieee80211_free_node(ni);
2056 if (bpf_peers_present(ic->ic_rawbpf))
2057 bpf_mtap(ic->ic_rawbpf, m0);
2059 if (rt2560_tx_data(sc, m0, ni) != 0) {
2060 ieee80211_free_node(ni);
2066 sc->sc_tx_timer = 5;
2067 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2074 rt2560_watchdog(void *arg)
2076 struct rt2560_softc *sc = arg;
2077 struct ieee80211com *ic = &sc->sc_ic;
2079 if (sc->sc_tx_timer > 0) {
2080 if (--sc->sc_tx_timer == 0) {
2081 device_printf(sc->sc_dev, "device timeout\n");
2083 sc->sc_ifp->if_oerrors++;
2086 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2089 ieee80211_watchdog(ic);
2093 * This function allows for fast channel switching in monitor mode (used by
2094 * net-mgmt/kismet). In IBSS mode, we must explicitly reset the interface to
2095 * generate a new beacon frame.
2098 rt2560_reset(struct ifnet *ifp)
2100 struct rt2560_softc *sc = ifp->if_softc;
2101 struct ieee80211com *ic = &sc->sc_ic;
2103 if (ic->ic_opmode != IEEE80211_M_MONITOR)
2106 rt2560_set_chan(sc, ic->ic_curchan);
2112 rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
2114 struct rt2560_softc *sc = ifp->if_softc;
2115 struct ieee80211com *ic = &sc->sc_ic;
2122 if (ifp->if_flags & IFF_UP) {
2123 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2124 rt2560_update_promisc(sc);
2128 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2134 error = ieee80211_ioctl(ic, cmd, data);
2137 if (error == ENETRESET) {
2138 if ((ifp->if_flags & IFF_UP) &&
2139 (ifp->if_drv_flags & IFF_DRV_RUNNING) &&
2140 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL))
2151 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val)
2156 for (ntries = 0; ntries < 100; ntries++) {
2157 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY))
2161 if (ntries == 100) {
2162 device_printf(sc->sc_dev, "could not write to BBP\n");
2166 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val;
2167 RAL_WRITE(sc, RT2560_BBPCSR, tmp);
2169 DPRINTFN(15, ("BBP R%u <- 0x%02x\n", reg, val));
2173 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg)
2178 val = RT2560_BBP_BUSY | reg << 8;
2179 RAL_WRITE(sc, RT2560_BBPCSR, val);
2181 for (ntries = 0; ntries < 100; ntries++) {
2182 val = RAL_READ(sc, RT2560_BBPCSR);
2183 if (!(val & RT2560_BBP_BUSY))
2188 device_printf(sc->sc_dev, "could not read from BBP\n");
2193 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val)
2198 for (ntries = 0; ntries < 100; ntries++) {
2199 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY))
2203 if (ntries == 100) {
2204 device_printf(sc->sc_dev, "could not write to RF\n");
2208 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 |
2210 RAL_WRITE(sc, RT2560_RFCSR, tmp);
2212 /* remember last written value in sc */
2213 sc->rf_regs[reg] = val;
2215 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff));
2219 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c)
2221 struct ieee80211com *ic = &sc->sc_ic;
2225 chan = ieee80211_chan2ieee(ic, c);
2226 if (chan == 0 || chan == IEEE80211_CHAN_ANY)
2229 if (IEEE80211_IS_CHAN_2GHZ(c))
2230 power = min(sc->txpow[chan - 1], 31);
2234 /* adjust txpower using ifconfig settings */
2235 power -= (100 - ic->ic_txpowlimit) / 8;
2237 DPRINTFN(2, ("setting channel to %u, txpower to %u\n", chan, power));
2239 switch (sc->rf_rev) {
2240 case RT2560_RF_2522:
2241 rt2560_rf_write(sc, RAL_RF1, 0x00814);
2242 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]);
2243 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2246 case RT2560_RF_2523:
2247 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2248 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]);
2249 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044);
2250 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2253 case RT2560_RF_2524:
2254 rt2560_rf_write(sc, RAL_RF1, 0x0c808);
2255 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]);
2256 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2257 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2260 case RT2560_RF_2525:
2261 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2262 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]);
2263 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2264 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2266 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2267 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]);
2268 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2269 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2272 case RT2560_RF_2525E:
2273 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2274 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]);
2275 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2276 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282);
2279 case RT2560_RF_2526:
2280 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]);
2281 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2282 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2284 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]);
2285 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2286 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2290 case RT2560_RF_5222:
2291 for (i = 0; rt2560_rf5222[i].chan != chan; i++);
2293 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1);
2294 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2);
2295 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2296 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4);
2300 if (ic->ic_state != IEEE80211_S_SCAN) {
2301 /* set Japan filter bit for channel 14 */
2302 tmp = rt2560_bbp_read(sc, 70);
2304 tmp &= ~RT2560_JAPAN_FILTER;
2306 tmp |= RT2560_JAPAN_FILTER;
2308 rt2560_bbp_write(sc, 70, tmp);
2310 /* clear CRC errors */
2311 RAL_READ(sc, RT2560_CNT0);
2317 * Disable RF auto-tuning.
2320 rt2560_disable_rf_tune(struct rt2560_softc *sc)
2324 if (sc->rf_rev != RT2560_RF_2523) {
2325 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE;
2326 rt2560_rf_write(sc, RAL_RF1, tmp);
2329 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE;
2330 rt2560_rf_write(sc, RAL_RF3, tmp);
2332 DPRINTFN(2, ("disabling RF autotune\n"));
2337 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF
2341 rt2560_enable_tsf_sync(struct rt2560_softc *sc)
2343 struct ieee80211com *ic = &sc->sc_ic;
2344 uint16_t logcwmin, preload;
2347 /* first, disable TSF synchronization */
2348 RAL_WRITE(sc, RT2560_CSR14, 0);
2350 tmp = 16 * ic->ic_bss->ni_intval;
2351 RAL_WRITE(sc, RT2560_CSR12, tmp);
2353 RAL_WRITE(sc, RT2560_CSR13, 0);
2356 preload = (ic->ic_opmode == IEEE80211_M_STA) ? 384 : 1024;
2357 tmp = logcwmin << 16 | preload;
2358 RAL_WRITE(sc, RT2560_BCNOCSR, tmp);
2360 /* finally, enable TSF synchronization */
2361 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN;
2362 if (ic->ic_opmode == IEEE80211_M_STA)
2363 tmp |= RT2560_ENABLE_TSF_SYNC(1);
2365 tmp |= RT2560_ENABLE_TSF_SYNC(2) |
2366 RT2560_ENABLE_BEACON_GENERATOR;
2367 RAL_WRITE(sc, RT2560_CSR14, tmp);
2369 DPRINTF(("enabling TSF synchronization\n"));
2373 rt2560_update_plcp(struct rt2560_softc *sc)
2375 struct ieee80211com *ic = &sc->sc_ic;
2377 /* no short preamble for 1Mbps */
2378 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400);
2380 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) {
2381 /* values taken from the reference driver */
2382 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401);
2383 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402);
2384 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403);
2386 /* same values as above or'ed 0x8 */
2387 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409);
2388 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a);
2389 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b);
2392 DPRINTF(("updating PLCP for %s preamble\n",
2393 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"));
2397 * This function can be called by ieee80211_set_shortslottime(). Refer to
2398 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed.
2401 rt2560_update_slot(struct ifnet *ifp)
2403 struct rt2560_softc *sc = ifp->if_softc;
2404 struct ieee80211com *ic = &sc->sc_ic;
2406 uint16_t tx_sifs, tx_pifs, tx_difs, eifs;
2409 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
2411 /* update the MAC slot boundaries */
2412 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND;
2413 tx_pifs = tx_sifs + slottime;
2414 tx_difs = tx_sifs + 2 * slottime;
2415 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60;
2417 tmp = RAL_READ(sc, RT2560_CSR11);
2418 tmp = (tmp & ~0x1f00) | slottime << 8;
2419 RAL_WRITE(sc, RT2560_CSR11, tmp);
2421 tmp = tx_pifs << 16 | tx_sifs;
2422 RAL_WRITE(sc, RT2560_CSR18, tmp);
2424 tmp = eifs << 16 | tx_difs;
2425 RAL_WRITE(sc, RT2560_CSR19, tmp);
2427 DPRINTF(("setting slottime to %uus\n", slottime));
2431 rt2560_set_basicrates(struct rt2560_softc *sc)
2433 struct ieee80211com *ic = &sc->sc_ic;
2435 /* update basic rate set */
2436 if (ic->ic_curmode == IEEE80211_MODE_11B) {
2437 /* 11b basic rates: 1, 2Mbps */
2438 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3);
2439 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) {
2440 /* 11a basic rates: 6, 12, 24Mbps */
2441 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150);
2443 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */
2444 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f);
2449 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2)
2453 /* set ON period to 70ms and OFF period to 30ms */
2454 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30;
2455 RAL_WRITE(sc, RT2560_LEDCSR, tmp);
2459 rt2560_set_bssid(struct rt2560_softc *sc, uint8_t *bssid)
2463 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
2464 RAL_WRITE(sc, RT2560_CSR5, tmp);
2466 tmp = bssid[4] | bssid[5] << 8;
2467 RAL_WRITE(sc, RT2560_CSR6, tmp);
2469 DPRINTF(("setting BSSID to %6D\n", bssid, ":"));
2473 rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2477 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
2478 RAL_WRITE(sc, RT2560_CSR3, tmp);
2480 tmp = addr[4] | addr[5] << 8;
2481 RAL_WRITE(sc, RT2560_CSR4, tmp);
2483 DPRINTF(("setting MAC address to %6D\n", addr, ":"));
2487 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2491 tmp = RAL_READ(sc, RT2560_CSR3);
2492 addr[0] = tmp & 0xff;
2493 addr[1] = (tmp >> 8) & 0xff;
2494 addr[2] = (tmp >> 16) & 0xff;
2495 addr[3] = (tmp >> 24);
2497 tmp = RAL_READ(sc, RT2560_CSR4);
2498 addr[4] = tmp & 0xff;
2499 addr[5] = (tmp >> 8) & 0xff;
2503 rt2560_update_promisc(struct rt2560_softc *sc)
2505 struct ifnet *ifp = sc->sc_ic.ic_ifp;
2508 tmp = RAL_READ(sc, RT2560_RXCSR0);
2510 tmp &= ~RT2560_DROP_NOT_TO_ME;
2511 if (!(ifp->if_flags & IFF_PROMISC))
2512 tmp |= RT2560_DROP_NOT_TO_ME;
2514 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2516 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
2517 "entering" : "leaving"));
2521 rt2560_get_rf(int rev)
2524 case RT2560_RF_2522: return "RT2522";
2525 case RT2560_RF_2523: return "RT2523";
2526 case RT2560_RF_2524: return "RT2524";
2527 case RT2560_RF_2525: return "RT2525";
2528 case RT2560_RF_2525E: return "RT2525e";
2529 case RT2560_RF_2526: return "RT2526";
2530 case RT2560_RF_5222: return "RT5222";
2531 default: return "unknown";
2536 rt2560_read_eeprom(struct rt2560_softc *sc)
2541 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0);
2542 sc->rf_rev = (val >> 11) & 0x7;
2543 sc->hw_radio = (val >> 10) & 0x1;
2544 sc->led_mode = (val >> 6) & 0x7;
2545 sc->rx_ant = (val >> 4) & 0x3;
2546 sc->tx_ant = (val >> 2) & 0x3;
2547 sc->nb_ant = val & 0x3;
2549 /* read default values for BBP registers */
2550 for (i = 0; i < 16; i++) {
2551 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i);
2552 sc->bbp_prom[i].reg = val >> 8;
2553 sc->bbp_prom[i].val = val & 0xff;
2556 /* read Tx power for all b/g channels */
2557 for (i = 0; i < 14 / 2; i++) {
2558 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i);
2559 sc->txpow[i * 2] = val >> 8;
2560 sc->txpow[i * 2 + 1] = val & 0xff;
2565 rt2560_bbp_init(struct rt2560_softc *sc)
2567 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2570 /* wait for BBP to be ready */
2571 for (ntries = 0; ntries < 100; ntries++) {
2572 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0)
2576 if (ntries == 100) {
2577 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
2581 /* initialize BBP registers to default values */
2582 for (i = 0; i < N(rt2560_def_bbp); i++) {
2583 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg,
2584 rt2560_def_bbp[i].val);
2587 /* initialize BBP registers to values stored in EEPROM */
2588 for (i = 0; i < 16; i++) {
2589 if (sc->bbp_prom[i].reg == 0xff)
2591 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
2600 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna)
2605 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK;
2607 tx |= RT2560_BBP_ANTA;
2608 else if (antenna == 2)
2609 tx |= RT2560_BBP_ANTB;
2611 tx |= RT2560_BBP_DIVERSITY;
2613 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */
2614 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 ||
2615 sc->rf_rev == RT2560_RF_5222)
2616 tx |= RT2560_BBP_FLIPIQ;
2618 rt2560_bbp_write(sc, RT2560_BBP_TX, tx);
2620 /* update values for CCK and OFDM in BBPCSR1 */
2621 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007;
2622 tmp |= (tx & 0x7) << 16 | (tx & 0x7);
2623 RAL_WRITE(sc, RT2560_BBPCSR1, tmp);
2627 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna)
2631 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK;
2633 rx |= RT2560_BBP_ANTA;
2634 else if (antenna == 2)
2635 rx |= RT2560_BBP_ANTB;
2637 rx |= RT2560_BBP_DIVERSITY;
2639 /* need to force no I/Q flip for RF 2525e and 2526 */
2640 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526)
2641 rx &= ~RT2560_BBP_FLIPIQ;
2643 rt2560_bbp_write(sc, RT2560_BBP_RX, rx);
2647 rt2560_init(void *priv)
2649 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2650 struct rt2560_softc *sc = priv;
2651 struct ieee80211com *ic = &sc->sc_ic;
2652 struct ifnet *ifp = ic->ic_ifp;
2660 /* setup tx rings */
2661 tmp = RT2560_PRIO_RING_COUNT << 24 |
2662 RT2560_ATIM_RING_COUNT << 16 |
2663 RT2560_TX_RING_COUNT << 8 |
2664 RT2560_TX_DESC_SIZE;
2666 /* rings must be initialized in this exact order */
2667 RAL_WRITE(sc, RT2560_TXCSR2, tmp);
2668 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr);
2669 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr);
2670 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr);
2671 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr);
2674 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE;
2676 RAL_WRITE(sc, RT2560_RXCSR1, tmp);
2677 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr);
2679 /* initialize MAC registers to default values */
2680 for (i = 0; i < N(rt2560_def_mac); i++)
2681 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val);
2683 IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp));
2684 rt2560_set_macaddr(sc, ic->ic_myaddr);
2686 /* set basic rate set (will be updated later) */
2687 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153);
2689 rt2560_set_txantenna(sc, sc->tx_ant);
2690 rt2560_set_rxantenna(sc, sc->rx_ant);
2691 rt2560_update_slot(ifp);
2692 rt2560_update_plcp(sc);
2693 rt2560_update_led(sc, 0, 0);
2695 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2696 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY);
2698 if (rt2560_bbp_init(sc) != 0) {
2704 /* set default BSS channel */
2705 rt2560_set_chan(sc, ic->ic_curchan);
2708 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR;
2709 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2710 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR;
2711 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2712 tmp |= RT2560_DROP_TODS;
2713 if (!(ifp->if_flags & IFF_PROMISC))
2714 tmp |= RT2560_DROP_NOT_TO_ME;
2716 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2718 /* clear old FCS and Rx FIFO errors */
2719 RAL_READ(sc, RT2560_CNT0);
2720 RAL_READ(sc, RT2560_CNT4);
2722 /* clear any pending interrupts */
2723 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff);
2725 /* enable interrupts */
2726 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
2728 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2729 ifp->if_drv_flags |= IFF_DRV_RUNNING;
2731 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2732 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
2733 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
2735 ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
2742 rt2560_stop(void *priv)
2744 struct rt2560_softc *sc = priv;
2745 struct ieee80211com *ic = &sc->sc_ic;
2746 struct ifnet *ifp = ic->ic_ifp;
2748 sc->sc_tx_timer = 0;
2749 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2751 ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
2754 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX);
2757 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX);
2759 /* reset ASIC (imply reset BBP) */
2760 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2761 RAL_WRITE(sc, RT2560_CSR1, 0);
2763 /* disable interrupts */
2764 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
2766 /* reset Tx and Rx rings */
2767 rt2560_reset_tx_ring(sc, &sc->txq);
2768 rt2560_reset_tx_ring(sc, &sc->atimq);
2769 rt2560_reset_tx_ring(sc, &sc->prioq);
2770 rt2560_reset_tx_ring(sc, &sc->bcnq);
2771 rt2560_reset_rx_ring(sc, &sc->rxq);
2775 rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2776 const struct ieee80211_bpf_params *params)
2778 struct ieee80211com *ic = ni->ni_ic;
2779 struct ifnet *ifp = ic->ic_ifp;
2780 struct rt2560_softc *sc = ifp->if_softc;
2784 /* prevent management frames from being sent if we're not ready */
2785 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2788 ieee80211_free_node(ni);
2791 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) {
2792 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2795 ieee80211_free_node(ni);
2796 return ENOBUFS; /* XXX */
2799 if (bpf_peers_present(ic->ic_rawbpf))
2800 bpf_mtap(ic->ic_rawbpf, m);
2804 if (params == NULL) {
2806 * Legacy path; interpret frame contents to decide
2807 * precisely how to send the frame.
2809 if (rt2560_tx_mgt(sc, m, ni) != 0)
2813 * Caller supplied explicit parameters to use in
2814 * sending the frame.
2816 if (rt2560_tx_raw(sc, m, ni, params))
2819 sc->sc_tx_timer = 5;
2820 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2827 ieee80211_free_node(ni);
2829 return EIO; /* XXX */