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 1.11 2007/03/27 13:34:53 sephe Exp $
22 * Ralink Technology RT2560 chipset driver
23 * http://www.ralinktech.com/
26 #include <sys/param.h>
28 #include <sys/endian.h>
29 #include <sys/kernel.h>
30 #include <sys/malloc.h>
32 #include <sys/module.h>
34 #include <sys/socket.h>
35 #include <sys/sockio.h>
36 #include <sys/sysctl.h>
37 #include <sys/serialize.h>
41 #include <net/if_arp.h>
42 #include <net/ethernet.h>
43 #include <net/if_dl.h>
44 #include <net/if_media.h>
45 #include <net/ifq_var.h>
47 #include <netproto/802_11/ieee80211_var.h>
48 #include <netproto/802_11/ieee80211_radiotap.h>
50 #include <dev/netif/ral/if_ralrate.h>
51 #include <dev/netif/ral/rt2560reg.h>
52 #include <dev/netif/ral/rt2560var.h>
54 #define RT2560_RSSI(sc, rssi) \
55 ((rssi) > (RT2560_NOISE_FLOOR + (sc)->rssi_corr) ? \
56 ((rssi) - RT2560_NOISE_FLOOR - (sc)->rssi_corr) : 0)
59 #define DPRINTF(x) do { if (ral_debug > 0) kprintf x; } while (0)
60 #define DPRINTFN(n, x) do { if (ral_debug >= (n)) kprintf x; } while (0)
64 #define DPRINTFN(n, x)
67 static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int,
69 static void rt2560_dma_map_mbuf(void *, bus_dma_segment_t *, int,
71 static int rt2560_alloc_tx_ring(struct rt2560_softc *,
72 struct rt2560_tx_ring *, int);
73 static void rt2560_reset_tx_ring(struct rt2560_softc *,
74 struct rt2560_tx_ring *);
75 static void rt2560_free_tx_ring(struct rt2560_softc *,
76 struct rt2560_tx_ring *);
77 static int rt2560_alloc_rx_ring(struct rt2560_softc *,
78 struct rt2560_rx_ring *, int);
79 static void rt2560_reset_rx_ring(struct rt2560_softc *,
80 struct rt2560_rx_ring *);
81 static void rt2560_free_rx_ring(struct rt2560_softc *,
82 struct rt2560_rx_ring *);
83 static struct ieee80211_node *rt2560_node_alloc(
84 struct ieee80211_node_table *);
85 static int rt2560_media_change(struct ifnet *);
86 static void rt2560_next_scan(void *);
87 static void rt2560_iter_func(void *, struct ieee80211_node *);
88 static void rt2560_update_rssadapt(void *);
89 static int rt2560_newstate(struct ieee80211com *,
90 enum ieee80211_state, int);
91 static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t);
92 static void rt2560_encryption_intr(struct rt2560_softc *);
93 static void rt2560_tx_intr(struct rt2560_softc *);
94 static void rt2560_prio_intr(struct rt2560_softc *);
95 static void rt2560_decryption_intr(struct rt2560_softc *);
96 static void rt2560_rx_intr(struct rt2560_softc *);
97 static void rt2560_beacon_expire(struct rt2560_softc *);
98 static void rt2560_wakeup_expire(struct rt2560_softc *);
99 static uint8_t rt2560_rxrate(struct rt2560_rx_desc *);
100 static uint16_t rt2560_txtime(int, int, uint32_t);
101 static uint8_t rt2560_plcp_signal(int);
102 static void rt2560_setup_tx_desc(struct rt2560_softc *,
103 struct rt2560_tx_desc *, uint32_t, int, int, int,
105 static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *,
106 struct ieee80211_node *);
107 static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *,
108 struct ieee80211_node *);
109 static struct mbuf *rt2560_get_rts(struct rt2560_softc *,
110 struct ieee80211_frame *, uint16_t);
111 static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *,
112 struct ieee80211_node *);
113 static void rt2560_start(struct ifnet *);
114 static void rt2560_watchdog(struct ifnet *);
115 static int rt2560_reset(struct ifnet *);
116 static int rt2560_ioctl(struct ifnet *, u_long, caddr_t,
118 static void rt2560_bbp_write(struct rt2560_softc *, uint8_t,
120 static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t);
121 static void rt2560_rf_write(struct rt2560_softc *, uint8_t,
123 static void rt2560_set_chan(struct rt2560_softc *,
124 struct ieee80211_channel *);
126 static void rt2560_disable_rf_tune(struct rt2560_softc *);
128 static void rt2560_enable_tsf_sync(struct rt2560_softc *);
129 static void rt2560_update_plcp(struct rt2560_softc *);
130 static void rt2560_update_slot(struct ifnet *);
131 static void rt2560_set_basicrates(struct rt2560_softc *);
132 static void rt2560_update_led(struct rt2560_softc *, int, int);
133 static void rt2560_set_bssid(struct rt2560_softc *, uint8_t *);
134 static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *);
135 static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *);
136 static void rt2560_update_promisc(struct rt2560_softc *);
137 static const char *rt2560_get_rf(int);
138 static void rt2560_read_eeprom(struct rt2560_softc *);
139 static int rt2560_bbp_init(struct rt2560_softc *);
140 static void rt2560_set_txantenna(struct rt2560_softc *, int);
141 static void rt2560_set_rxantenna(struct rt2560_softc *, int);
142 static void rt2560_init(void *);
143 static void rt2560_stop(void *);
144 static void rt2560_intr(void *);
147 * Supported rates for 802.11a/b/g modes (in 500Kbps unit).
149 static const struct ieee80211_rateset rt2560_rateset_11a =
150 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } };
152 static const struct ieee80211_rateset rt2560_rateset_11b =
153 { 4, { 2, 4, 11, 22 } };
155 static const struct ieee80211_rateset rt2560_rateset_11g =
156 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } };
158 static const struct {
161 } rt2560_def_mac[] = {
165 static const struct {
168 } rt2560_def_bbp[] = {
172 static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2;
173 static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2;
174 static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2;
175 static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2;
176 static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2;
177 static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2;
178 static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2;
179 static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2;
181 static const struct {
184 } rt2560_rf5222[] = {
189 rt2560_attach(device_t dev, int id)
191 struct rt2560_softc *sc = device_get_softc(dev);
192 struct ieee80211com *ic = &sc->sc_ic;
193 struct ifnet *ifp = &ic->ic_if;
196 callout_init(&sc->scan_ch);
197 callout_init(&sc->rssadapt_ch);
200 sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->sc_irq_rid,
201 RF_ACTIVE | RF_SHAREABLE);
202 if (sc->sc_irq == NULL) {
203 device_printf(dev, "could not allocate interrupt resource\n");
207 /* retrieve RT2560 rev. no */
208 sc->asic_rev = RAL_READ(sc, RT2560_CSR0);
210 /* retrieve MAC address */
211 rt2560_get_macaddr(sc, ic->ic_myaddr);
213 /* retrieve RF rev. no and various other things from EEPROM */
214 rt2560_read_eeprom(sc);
216 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n",
217 sc->asic_rev, rt2560_get_rf(sc->rf_rev));
220 * Allocate Tx and Rx rings.
222 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT);
224 device_printf(sc->sc_dev, "could not allocate Tx ring\n");
228 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT);
230 device_printf(sc->sc_dev, "could not allocate ATIM ring\n");
234 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT);
236 device_printf(sc->sc_dev, "could not allocate Prio ring\n");
240 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT);
242 device_printf(sc->sc_dev, "could not allocate Beacon ring\n");
246 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT);
248 device_printf(sc->sc_dev, "could not allocate Rx ring\n");
252 sysctl_ctx_init(&sc->sysctl_ctx);
253 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
254 SYSCTL_STATIC_CHILDREN(_hw),
256 device_get_nameunit(dev),
258 if (sc->sysctl_tree == NULL) {
259 device_printf(dev, "could not add sysctl node\n");
265 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
266 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
267 ifp->if_init = rt2560_init;
268 ifp->if_ioctl = rt2560_ioctl;
269 ifp->if_start = rt2560_start;
270 ifp->if_watchdog = rt2560_watchdog;
271 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
272 ifq_set_ready(&ifp->if_snd);
274 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
275 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */
276 ic->ic_state = IEEE80211_S_INIT;
278 /* set device capabilities */
280 IEEE80211_C_IBSS | /* IBSS mode supported */
281 IEEE80211_C_MONITOR | /* monitor mode supported */
282 IEEE80211_C_HOSTAP | /* HostAp mode supported */
283 IEEE80211_C_TXPMGT | /* tx power management */
284 IEEE80211_C_SHPREAMBLE | /* short preamble supported */
285 IEEE80211_C_SHSLOT | /* short slot time supported */
286 IEEE80211_C_WEP | /* WEP */
287 IEEE80211_C_WPA; /* 802.11i */
289 if (sc->rf_rev == RT2560_RF_5222) {
290 /* set supported .11a rates */
291 ic->ic_sup_rates[IEEE80211_MODE_11A] = rt2560_rateset_11a;
293 /* set supported .11a channels */
294 for (i = 36; i <= 64; i += 4) {
295 ic->ic_channels[i].ic_freq =
296 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
297 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
299 for (i = 100; i <= 140; i += 4) {
300 ic->ic_channels[i].ic_freq =
301 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
302 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
304 for (i = 149; i <= 161; i += 4) {
305 ic->ic_channels[i].ic_freq =
306 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
307 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
311 /* set supported .11b and .11g rates */
312 ic->ic_sup_rates[IEEE80211_MODE_11B] = rt2560_rateset_11b;
313 ic->ic_sup_rates[IEEE80211_MODE_11G] = rt2560_rateset_11g;
315 /* set supported .11b and .11g channels (1 through 14) */
316 for (i = 1; i <= 14; i++) {
317 ic->ic_channels[i].ic_freq =
318 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
319 ic->ic_channels[i].ic_flags =
320 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM |
321 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ;
324 ieee80211_ifattach(ic);
325 ic->ic_node_alloc = rt2560_node_alloc;
326 ic->ic_updateslot = rt2560_update_slot;
327 ic->ic_reset = rt2560_reset;
328 /* enable s/w bmiss handling in sta mode */
329 ic->ic_flags_ext |= IEEE80211_FEXT_SWBMISS;
331 /* override state transition machine */
332 sc->sc_newstate = ic->ic_newstate;
333 ic->ic_newstate = rt2560_newstate;
334 ieee80211_media_init(ic, rt2560_media_change, ieee80211_media_status);
336 bpfattach_dlt(ifp, DLT_IEEE802_11_RADIO,
337 sizeof (struct ieee80211_frame) + 64, &sc->sc_drvbpf);
339 sc->sc_rxtap_len = sizeof sc->sc_rxtapu;
340 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
341 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2560_RX_RADIOTAP_PRESENT);
343 sc->sc_txtap_len = sizeof sc->sc_txtapu;
344 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
345 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2560_TX_RADIOTAP_PRESENT);
348 * Add a few sysctl knobs.
352 SYSCTL_ADD_INT(&sc->sysctl_ctx,
353 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
354 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)");
356 SYSCTL_ADD_INT(&sc->sysctl_ctx,
357 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
358 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)");
360 SYSCTL_ADD_INT(&sc->sysctl_ctx,
361 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "dwell",
362 CTLFLAG_RW, &sc->dwelltime, 0,
363 "channel dwell time (ms) for AP/station scanning");
365 error = bus_setup_intr(dev, sc->sc_irq, INTR_MPSAFE, rt2560_intr,
366 sc, &sc->sc_ih, ifp->if_serializer);
368 device_printf(dev, "could not set up interrupt\n");
370 ieee80211_ifdetach(ic);
375 ieee80211_announce(ic);
383 rt2560_detach(void *xsc)
385 struct rt2560_softc *sc = xsc;
386 struct ieee80211com *ic = &sc->sc_ic;
387 struct ifnet *ifp = ic->ic_ifp;
389 if (device_is_attached(sc->sc_dev)) {
390 lwkt_serialize_enter(ifp->if_serializer);
392 callout_stop(&sc->scan_ch);
393 callout_stop(&sc->rssadapt_ch);
396 bus_teardown_intr(sc->sc_dev, sc->sc_irq, sc->sc_ih);
398 lwkt_serialize_exit(ifp->if_serializer);
401 ieee80211_ifdetach(ic);
404 rt2560_free_tx_ring(sc, &sc->txq);
405 rt2560_free_tx_ring(sc, &sc->atimq);
406 rt2560_free_tx_ring(sc, &sc->prioq);
407 rt2560_free_tx_ring(sc, &sc->bcnq);
408 rt2560_free_rx_ring(sc, &sc->rxq);
410 if (sc->sc_irq != NULL) {
411 bus_release_resource(sc->sc_dev, SYS_RES_IRQ, sc->sc_irq_rid,
415 if (sc->sysctl_tree != NULL)
416 sysctl_ctx_free(&sc->sysctl_ctx);
422 rt2560_shutdown(void *xsc)
424 struct rt2560_softc *sc = xsc;
425 struct ifnet *ifp = &sc->sc_ic.ic_if;
427 lwkt_serialize_enter(ifp->if_serializer);
429 lwkt_serialize_exit(ifp->if_serializer);
433 rt2560_suspend(void *xsc)
435 struct rt2560_softc *sc = xsc;
436 struct ifnet *ifp = &sc->sc_ic.ic_if;
438 lwkt_serialize_enter(ifp->if_serializer);
440 lwkt_serialize_exit(ifp->if_serializer);
444 rt2560_resume(void *xsc)
446 struct rt2560_softc *sc = xsc;
447 struct ifnet *ifp = sc->sc_ic.ic_ifp;
449 lwkt_serialize_enter(ifp->if_serializer);
450 if (ifp->if_flags & IFF_UP) {
451 ifp->if_init(ifp->if_softc);
452 if (ifp->if_flags & IFF_RUNNING)
455 lwkt_serialize_exit(ifp->if_serializer);
459 rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
464 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
466 *(bus_addr_t *)arg = segs[0].ds_addr;
470 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring,
477 ring->cur = ring->next = 0;
478 ring->cur_encrypt = ring->next_encrypt = 0;
480 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
481 BUS_SPACE_MAXADDR, NULL, NULL, count * RT2560_TX_DESC_SIZE, 1,
482 count * RT2560_TX_DESC_SIZE, 0, &ring->desc_dmat);
484 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
488 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
489 BUS_DMA_WAITOK | BUS_DMA_ZERO, &ring->desc_map);
491 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
495 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
496 count * RT2560_TX_DESC_SIZE,
497 rt2560_dma_map_addr, &ring->physaddr, 0);
499 device_printf(sc->sc_dev, "could not load desc DMA map\n");
501 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
506 ring->data = kmalloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF,
509 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
510 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, RT2560_MAX_SCATTER,
511 MCLBYTES, 0, &ring->data_dmat);
513 device_printf(sc->sc_dev, "could not create data DMA tag\n");
517 for (i = 0; i < count; i++) {
518 error = bus_dmamap_create(ring->data_dmat, 0,
521 device_printf(sc->sc_dev, "could not create DMA map\n");
527 fail: rt2560_free_tx_ring(sc, ring);
532 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
534 struct rt2560_tx_desc *desc;
535 struct rt2560_tx_data *data;
538 for (i = 0; i < ring->count; i++) {
539 desc = &ring->desc[i];
540 data = &ring->data[i];
542 if (data->m != NULL) {
543 bus_dmamap_sync(ring->data_dmat, data->map,
544 BUS_DMASYNC_POSTWRITE);
545 bus_dmamap_unload(ring->data_dmat, data->map);
550 if (data->ni != NULL) {
551 ieee80211_free_node(data->ni);
558 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
561 ring->cur = ring->next = 0;
562 ring->cur_encrypt = ring->next_encrypt = 0;
566 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
568 struct rt2560_tx_data *data;
571 if (ring->desc != NULL) {
572 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
573 BUS_DMASYNC_POSTWRITE);
574 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
575 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
579 if (ring->desc_dmat != NULL) {
580 bus_dma_tag_destroy(ring->desc_dmat);
581 ring->desc_dmat = NULL;
584 if (ring->data != NULL) {
585 for (i = 0; i < ring->count; i++) {
586 data = &ring->data[i];
588 if (data->m != NULL) {
589 bus_dmamap_sync(ring->data_dmat, data->map,
590 BUS_DMASYNC_POSTWRITE);
591 bus_dmamap_unload(ring->data_dmat, data->map);
596 if (data->ni != NULL) {
597 ieee80211_free_node(data->ni);
601 if (data->map != NULL) {
602 bus_dmamap_destroy(ring->data_dmat, data->map);
607 kfree(ring->data, M_DEVBUF);
611 if (ring->data_dmat != NULL) {
612 bus_dma_tag_destroy(ring->data_dmat);
613 ring->data_dmat = NULL;
618 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring,
621 struct rt2560_rx_desc *desc;
622 struct rt2560_rx_data *data;
627 ring->cur = ring->next = 0;
628 ring->cur_decrypt = 0;
630 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
631 BUS_SPACE_MAXADDR, NULL, NULL, count * RT2560_RX_DESC_SIZE, 1,
632 count * RT2560_RX_DESC_SIZE, 0, &ring->desc_dmat);
634 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
638 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
639 BUS_DMA_WAITOK | BUS_DMA_ZERO, &ring->desc_map);
641 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
645 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
646 count * RT2560_RX_DESC_SIZE,
647 rt2560_dma_map_addr, &ring->physaddr, 0);
649 device_printf(sc->sc_dev, "could not load desc DMA map\n");
651 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
656 ring->data = kmalloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF,
660 * Pre-allocate Rx buffers and populate Rx ring.
662 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
663 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0,
666 device_printf(sc->sc_dev, "could not create data DMA tag\n");
670 for (i = 0; i < count; i++) {
671 desc = &sc->rxq.desc[i];
672 data = &sc->rxq.data[i];
674 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
676 device_printf(sc->sc_dev, "could not create DMA map\n");
680 data->m = m_getcl(MB_WAIT, MT_DATA, M_PKTHDR);
681 if (data->m == NULL) {
682 device_printf(sc->sc_dev,
683 "could not allocate rx mbuf\n");
688 error = bus_dmamap_load(ring->data_dmat, data->map,
689 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr,
692 device_printf(sc->sc_dev,
693 "could not load rx buf DMA map");
700 desc->flags = htole32(RT2560_RX_BUSY);
701 desc->physaddr = htole32(physaddr);
704 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
708 fail: rt2560_free_rx_ring(sc, ring);
713 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
717 for (i = 0; i < ring->count; i++) {
718 ring->desc[i].flags = htole32(RT2560_RX_BUSY);
719 ring->data[i].drop = 0;
722 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
724 ring->cur = ring->next = 0;
725 ring->cur_decrypt = 0;
729 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
731 struct rt2560_rx_data *data;
733 if (ring->desc != NULL) {
734 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
735 BUS_DMASYNC_POSTWRITE);
736 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
737 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
741 if (ring->desc_dmat != NULL) {
742 bus_dma_tag_destroy(ring->desc_dmat);
743 ring->desc_dmat = NULL;
746 if (ring->data != NULL) {
749 for (i = 0; i < ring->count; i++) {
750 data = &ring->data[i];
752 if (data->m != NULL) {
753 bus_dmamap_sync(ring->data_dmat, data->map,
754 BUS_DMASYNC_POSTREAD);
755 bus_dmamap_unload(ring->data_dmat, data->map);
760 if (data->map != NULL) {
761 bus_dmamap_destroy(ring->data_dmat, data->map);
766 kfree(ring->data, M_DEVBUF);
770 if (ring->data_dmat != NULL) {
771 bus_dma_tag_destroy(ring->data_dmat);
772 ring->data_dmat = NULL;
776 static struct ieee80211_node *
777 rt2560_node_alloc(struct ieee80211_node_table *nt)
779 struct rt2560_node *rn;
781 rn = kmalloc(sizeof(struct rt2560_node), M_80211_NODE,
784 return (rn != NULL) ? &rn->ni : NULL;
788 rt2560_media_change(struct ifnet *ifp)
790 struct rt2560_softc *sc = ifp->if_softc;
793 error = ieee80211_media_change(ifp);
794 if (error != ENETRESET)
797 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING))
803 * This function is called periodically (every 200ms) during scanning to
804 * switch from one channel to another.
807 rt2560_next_scan(void *arg)
809 struct rt2560_softc *sc = arg;
810 struct ieee80211com *ic = &sc->sc_ic;
811 struct ifnet *ifp = ic->ic_ifp;
813 lwkt_serialize_enter(ifp->if_serializer);
814 if (ic->ic_state == IEEE80211_S_SCAN)
815 ieee80211_next_scan(ic);
816 lwkt_serialize_exit(ifp->if_serializer);
820 * This function is called for each node present in the node station table.
823 rt2560_iter_func(void *arg, struct ieee80211_node *ni)
825 struct rt2560_node *rn = (struct rt2560_node *)ni;
827 ral_rssadapt_updatestats(&rn->rssadapt);
831 * This function is called periodically (every 100ms) in RUN state to update
832 * the rate adaptation statistics.
835 rt2560_update_rssadapt(void *arg)
837 struct rt2560_softc *sc = arg;
838 struct ieee80211com *ic = &sc->sc_ic;
839 struct ifnet *ifp = ic->ic_ifp;
841 lwkt_serialize_enter(ifp->if_serializer);
843 ieee80211_iterate_nodes(&ic->ic_sta, rt2560_iter_func, arg);
844 callout_reset(&sc->rssadapt_ch, hz / 10, rt2560_update_rssadapt, sc);
846 lwkt_serialize_exit(ifp->if_serializer);
850 rt2560_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
852 struct rt2560_softc *sc = ic->ic_ifp->if_softc;
853 enum ieee80211_state ostate;
854 struct ieee80211_node *ni;
858 ostate = ic->ic_state;
859 callout_stop(&sc->scan_ch);
862 case IEEE80211_S_INIT:
863 callout_stop(&sc->rssadapt_ch);
865 if (ostate == IEEE80211_S_RUN) {
866 /* abort TSF synchronization */
867 RAL_WRITE(sc, RT2560_CSR14, 0);
869 /* turn association led off */
870 rt2560_update_led(sc, 0, 0);
874 case IEEE80211_S_SCAN:
875 rt2560_set_chan(sc, ic->ic_curchan);
876 callout_reset(&sc->scan_ch, (sc->dwelltime * hz) / 1000,
877 rt2560_next_scan, sc);
880 case IEEE80211_S_AUTH:
881 rt2560_set_chan(sc, ic->ic_curchan);
884 case IEEE80211_S_ASSOC:
885 rt2560_set_chan(sc, ic->ic_curchan);
888 case IEEE80211_S_RUN:
889 rt2560_set_chan(sc, ic->ic_curchan);
893 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
894 rt2560_update_plcp(sc);
895 rt2560_set_basicrates(sc);
896 rt2560_set_bssid(sc, ni->ni_bssid);
899 if (ic->ic_opmode == IEEE80211_M_HOSTAP ||
900 ic->ic_opmode == IEEE80211_M_IBSS) {
901 m = ieee80211_beacon_alloc(ic, ni, &sc->sc_bo);
903 device_printf(sc->sc_dev,
904 "could not allocate beacon\n");
909 ieee80211_ref_node(ni);
910 error = rt2560_tx_bcn(sc, m, ni);
915 /* turn assocation led on */
916 rt2560_update_led(sc, 1, 0);
918 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
919 callout_reset(&sc->rssadapt_ch, hz / 10,
920 rt2560_update_rssadapt, sc);
922 rt2560_enable_tsf_sync(sc);
927 return (error != 0) ? error : sc->sc_newstate(ic, nstate, arg);
931 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or
935 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr)
941 /* clock C once before the first command */
942 RT2560_EEPROM_CTL(sc, 0);
944 RT2560_EEPROM_CTL(sc, RT2560_S);
945 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
946 RT2560_EEPROM_CTL(sc, RT2560_S);
948 /* write start bit (1) */
949 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
950 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
952 /* write READ opcode (10) */
953 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
954 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
955 RT2560_EEPROM_CTL(sc, RT2560_S);
956 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
958 /* write address (A5-A0 or A7-A0) */
959 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7;
960 for (; n >= 0; n--) {
961 RT2560_EEPROM_CTL(sc, RT2560_S |
962 (((addr >> n) & 1) << RT2560_SHIFT_D));
963 RT2560_EEPROM_CTL(sc, RT2560_S |
964 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C);
967 RT2560_EEPROM_CTL(sc, RT2560_S);
969 /* read data Q15-Q0 */
971 for (n = 15; n >= 0; n--) {
972 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
973 tmp = RAL_READ(sc, RT2560_CSR21);
974 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n;
975 RT2560_EEPROM_CTL(sc, RT2560_S);
978 RT2560_EEPROM_CTL(sc, 0);
980 /* clear Chip Select and clock C */
981 RT2560_EEPROM_CTL(sc, RT2560_S);
982 RT2560_EEPROM_CTL(sc, 0);
983 RT2560_EEPROM_CTL(sc, RT2560_C);
989 * Some frames were processed by the hardware cipher engine and are ready for
993 rt2560_encryption_intr(struct rt2560_softc *sc)
995 struct rt2560_tx_desc *desc;
998 /* retrieve last descriptor index processed by cipher engine */
999 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr;
1000 hw /= RT2560_TX_DESC_SIZE;
1002 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1003 BUS_DMASYNC_POSTREAD);
1005 for (; sc->txq.next_encrypt != hw;) {
1006 desc = &sc->txq.desc[sc->txq.next_encrypt];
1008 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
1009 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY))
1012 /* for TKIP, swap eiv field to fix a bug in ASIC */
1013 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) ==
1014 RT2560_TX_CIPHER_TKIP)
1015 desc->eiv = bswap32(desc->eiv);
1017 /* mark the frame ready for transmission */
1018 desc->flags |= htole32(RT2560_TX_VALID);
1019 desc->flags |= htole32(RT2560_TX_BUSY);
1021 DPRINTFN(15, ("encryption done idx=%u\n",
1022 sc->txq.next_encrypt));
1024 sc->txq.next_encrypt =
1025 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT;
1028 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1029 BUS_DMASYNC_PREWRITE);
1032 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX);
1036 rt2560_tx_intr(struct rt2560_softc *sc)
1038 struct ieee80211com *ic = &sc->sc_ic;
1039 struct ifnet *ifp = ic->ic_ifp;
1040 struct rt2560_tx_desc *desc;
1041 struct rt2560_tx_data *data;
1042 struct rt2560_node *rn;
1044 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1045 BUS_DMASYNC_POSTREAD);
1048 desc = &sc->txq.desc[sc->txq.next];
1049 data = &sc->txq.data[sc->txq.next];
1051 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
1052 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY) ||
1053 !(le32toh(desc->flags) & RT2560_TX_VALID))
1056 rn = (struct rt2560_node *)data->ni;
1058 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) {
1059 case RT2560_TX_SUCCESS:
1060 DPRINTFN(10, ("data frame sent successfully\n"));
1061 if (data->id.id_node != NULL) {
1062 ral_rssadapt_raise_rate(ic, &rn->rssadapt,
1068 case RT2560_TX_SUCCESS_RETRY:
1069 DPRINTFN(9, ("data frame sent after %u retries\n",
1070 (le32toh(desc->flags) >> 5) & 0x7));
1074 case RT2560_TX_FAIL_RETRY:
1075 DPRINTFN(9, ("sending data frame failed (too much "
1077 if (data->id.id_node != NULL) {
1078 ral_rssadapt_lower_rate(ic, data->ni,
1079 &rn->rssadapt, &data->id);
1084 case RT2560_TX_FAIL_INVALID:
1085 case RT2560_TX_FAIL_OTHER:
1087 device_printf(sc->sc_dev, "sending data frame failed "
1088 "0x%08x\n", le32toh(desc->flags));
1092 bus_dmamap_sync(sc->txq.data_dmat, data->map,
1093 BUS_DMASYNC_POSTWRITE);
1094 bus_dmamap_unload(sc->txq.data_dmat, data->map);
1097 ieee80211_free_node(data->ni);
1100 /* descriptor is no longer valid */
1101 desc->flags &= ~htole32(RT2560_TX_VALID);
1103 DPRINTFN(15, ("tx done idx=%u\n", sc->txq.next));
1106 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT;
1109 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1110 BUS_DMASYNC_PREWRITE);
1112 sc->sc_tx_timer = 0;
1113 ifp->if_flags &= ~IFF_OACTIVE;
1118 rt2560_prio_intr(struct rt2560_softc *sc)
1120 struct ieee80211com *ic = &sc->sc_ic;
1121 struct ifnet *ifp = ic->ic_ifp;
1122 struct rt2560_tx_desc *desc;
1123 struct rt2560_tx_data *data;
1125 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1126 BUS_DMASYNC_POSTREAD);
1129 desc = &sc->prioq.desc[sc->prioq.next];
1130 data = &sc->prioq.data[sc->prioq.next];
1132 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
1133 !(le32toh(desc->flags) & RT2560_TX_VALID))
1136 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) {
1137 case RT2560_TX_SUCCESS:
1138 DPRINTFN(10, ("mgt frame sent successfully\n"));
1141 case RT2560_TX_SUCCESS_RETRY:
1142 DPRINTFN(9, ("mgt frame sent after %u retries\n",
1143 (le32toh(desc->flags) >> 5) & 0x7));
1146 case RT2560_TX_FAIL_RETRY:
1147 DPRINTFN(9, ("sending mgt frame failed (too much "
1151 case RT2560_TX_FAIL_INVALID:
1152 case RT2560_TX_FAIL_OTHER:
1154 device_printf(sc->sc_dev, "sending mgt frame failed "
1155 "0x%08x\n", le32toh(desc->flags));
1158 bus_dmamap_sync(sc->prioq.data_dmat, data->map,
1159 BUS_DMASYNC_POSTWRITE);
1160 bus_dmamap_unload(sc->prioq.data_dmat, data->map);
1163 ieee80211_free_node(data->ni);
1166 /* descriptor is no longer valid */
1167 desc->flags &= ~htole32(RT2560_TX_VALID);
1169 DPRINTFN(15, ("prio done idx=%u\n", sc->prioq.next));
1172 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT;
1175 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1176 BUS_DMASYNC_PREWRITE);
1178 sc->sc_tx_timer = 0;
1179 ifp->if_flags &= ~IFF_OACTIVE;
1184 * Some frames were processed by the hardware cipher engine and are ready for
1185 * transmission to the IEEE802.11 layer.
1188 rt2560_decryption_intr(struct rt2560_softc *sc)
1190 struct ieee80211com *ic = &sc->sc_ic;
1191 struct ifnet *ifp = ic->ic_ifp;
1192 struct rt2560_rx_desc *desc;
1193 struct rt2560_rx_data *data;
1194 bus_addr_t physaddr;
1195 struct ieee80211_frame *wh;
1196 struct ieee80211_node *ni;
1197 struct rt2560_node *rn;
1198 struct mbuf *mnew, *m;
1201 /* retrieve last decriptor index processed by cipher engine */
1202 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr;
1203 hw /= RT2560_RX_DESC_SIZE;
1205 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1206 BUS_DMASYNC_POSTREAD);
1208 for (; sc->rxq.cur_decrypt != hw;) {
1209 desc = &sc->rxq.desc[sc->rxq.cur_decrypt];
1210 data = &sc->rxq.data[sc->rxq.cur_decrypt];
1212 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1213 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1221 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 &&
1222 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) {
1228 * Try to allocate a new mbuf for this ring element and load it
1229 * before processing the current mbuf. If the ring element
1230 * cannot be loaded, drop the received packet and reuse the old
1231 * mbuf. In the unlikely case that the old mbuf can't be
1232 * reloaded either, explicitly panic.
1234 mnew = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
1240 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1241 BUS_DMASYNC_POSTREAD);
1242 bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1244 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1245 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr,
1250 /* try to reload the old mbuf */
1251 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1252 mtod(data->m, void *), MCLBYTES,
1253 rt2560_dma_map_addr, &physaddr, 0);
1255 /* very unlikely that it will fail... */
1256 panic("%s: could not load old rx mbuf",
1257 device_get_name(sc->sc_dev));
1264 * New mbuf successfully loaded, update Rx ring and continue
1269 desc->physaddr = htole32(physaddr);
1272 m->m_pkthdr.rcvif = ifp;
1273 m->m_pkthdr.len = m->m_len =
1274 (le32toh(desc->flags) >> 16) & 0xfff;
1276 if (sc->sc_drvbpf != NULL) {
1277 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap;
1278 uint32_t tsf_lo, tsf_hi;
1280 /* get timestamp (low and high 32 bits) */
1281 tsf_hi = RAL_READ(sc, RT2560_CSR17);
1282 tsf_lo = RAL_READ(sc, RT2560_CSR16);
1285 htole64(((uint64_t)tsf_hi << 32) | tsf_lo);
1287 tap->wr_rate = rt2560_rxrate(desc);
1288 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
1289 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
1290 tap->wr_antenna = sc->rx_ant;
1291 tap->wr_antsignal = RT2560_RSSI(sc, desc->rssi);
1293 bpf_ptap(sc->sc_drvbpf, m, tap, sc->sc_rxtap_len);
1296 wh = mtod(m, struct ieee80211_frame *);
1297 ni = ieee80211_find_rxnode(ic,
1298 (struct ieee80211_frame_min *)wh);
1300 /* send the frame to the 802.11 layer */
1301 ieee80211_input(ic, m, ni, RT2560_RSSI(sc, desc->rssi), 0);
1303 /* give rssi to the rate adatation algorithm */
1304 rn = (struct rt2560_node *)ni;
1305 ral_rssadapt_input(ic, ni, &rn->rssadapt,
1306 RT2560_RSSI(sc, desc->rssi));
1308 /* node is no longer needed */
1309 ieee80211_free_node(ni);
1311 skip: desc->flags = htole32(RT2560_RX_BUSY);
1313 DPRINTFN(15, ("decryption done idx=%u\n", sc->rxq.cur_decrypt));
1315 sc->rxq.cur_decrypt =
1316 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT;
1319 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1320 BUS_DMASYNC_PREWRITE);
1324 * Some frames were received. Pass them to the hardware cipher engine before
1325 * sending them to the 802.11 layer.
1328 rt2560_rx_intr(struct rt2560_softc *sc)
1330 struct rt2560_rx_desc *desc;
1331 struct rt2560_rx_data *data;
1333 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1334 BUS_DMASYNC_POSTREAD);
1337 desc = &sc->rxq.desc[sc->rxq.cur];
1338 data = &sc->rxq.data[sc->rxq.cur];
1340 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1341 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1346 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) ||
1347 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) {
1349 * This should not happen since we did not request
1350 * to receive those frames when we filled RXCSR0.
1352 DPRINTFN(5, ("PHY or CRC error flags 0x%08x\n",
1353 le32toh(desc->flags)));
1357 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) {
1358 DPRINTFN(5, ("bad length\n"));
1362 /* mark the frame for decryption */
1363 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY);
1365 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1367 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT;
1370 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1371 BUS_DMASYNC_PREWRITE);
1374 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT);
1378 * This function is called periodically in IBSS mode when a new beacon must be
1382 rt2560_beacon_expire(struct rt2560_softc *sc)
1384 struct ieee80211com *ic = &sc->sc_ic;
1385 struct rt2560_tx_data *data;
1387 if (ic->ic_opmode != IEEE80211_M_IBSS &&
1388 ic->ic_opmode != IEEE80211_M_HOSTAP)
1391 data = &sc->bcnq.data[sc->bcnq.next];
1393 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
1394 bus_dmamap_unload(sc->bcnq.data_dmat, data->map);
1396 ieee80211_beacon_update(ic, data->ni, &sc->sc_bo, data->m, 1);
1398 if (ic->ic_rawbpf != NULL)
1399 bpf_mtap(ic->ic_rawbpf, data->m);
1401 rt2560_tx_bcn(sc, data->m, data->ni);
1403 DPRINTFN(15, ("beacon expired\n"));
1405 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT;
1410 rt2560_wakeup_expire(struct rt2560_softc *sc)
1412 DPRINTFN(2, ("wakeup expired\n"));
1416 rt2560_intr(void *arg)
1418 struct rt2560_softc *sc = arg;
1419 struct ifnet *ifp = &sc->sc_ic.ic_if;
1422 /* disable interrupts */
1423 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
1425 /* don't re-enable interrupts if we're shutting down */
1426 if (!(ifp->if_flags & IFF_RUNNING))
1429 r = RAL_READ(sc, RT2560_CSR7);
1430 RAL_WRITE(sc, RT2560_CSR7, r);
1432 if (r & RT2560_BEACON_EXPIRE)
1433 rt2560_beacon_expire(sc);
1435 if (r & RT2560_WAKEUP_EXPIRE)
1436 rt2560_wakeup_expire(sc);
1438 if (r & RT2560_PRIO_DONE)
1439 rt2560_prio_intr(sc);
1441 if (r & (RT2560_TX_DONE | RT2560_ENCRYPTION_DONE)) {
1444 for (i = 0; i < 2; ++i) {
1446 rt2560_encryption_intr(sc);
1450 if (r & (RT2560_DECRYPTION_DONE | RT2560_RX_DONE)) {
1453 for (i = 0; i < 2; ++i) {
1454 rt2560_decryption_intr(sc);
1459 /* re-enable interrupts */
1460 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
1463 /* quickly determine if a given rate is CCK or OFDM */
1464 #define RAL_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
1466 #define RAL_ACK_SIZE 14 /* 10 + 4(FCS) */
1467 #define RAL_CTS_SIZE 14 /* 10 + 4(FCS) */
1469 #define RAL_SIFS 10 /* us */
1471 #define RT2560_TXRX_TURNAROUND 10 /* us */
1474 * This function is only used by the Rx radiotap code.
1477 rt2560_rxrate(struct rt2560_rx_desc *desc)
1479 if (le32toh(desc->flags) & RT2560_RX_OFDM) {
1480 /* reverse function of rt2560_plcp_signal */
1481 switch (desc->rate) {
1482 case 0xb: return 12;
1483 case 0xf: return 18;
1484 case 0xa: return 24;
1485 case 0xe: return 36;
1486 case 0x9: return 48;
1487 case 0xd: return 72;
1488 case 0x8: return 96;
1489 case 0xc: return 108;
1492 if (desc->rate == 10)
1494 if (desc->rate == 20)
1496 if (desc->rate == 55)
1498 if (desc->rate == 110)
1501 return 2; /* should not get there */
1505 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'.
1506 * The function automatically determines the operating mode depending on the
1507 * given rate. `flags' indicates whether short preamble is in use or not.
1510 rt2560_txtime(int len, int rate, uint32_t flags)
1514 if (RAL_RATE_IS_OFDM(rate)) {
1515 /* IEEE Std 802.11a-1999, pp. 37 */
1516 txtime = (8 + 4 * len + 3 + rate - 1) / rate;
1517 txtime = 16 + 4 + 4 * txtime + 6;
1519 /* IEEE Std 802.11b-1999, pp. 28 */
1520 txtime = (16 * len + rate - 1) / rate;
1521 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE))
1531 rt2560_plcp_signal(int rate)
1534 /* CCK rates (returned values are device-dependent) */
1537 case 11: return 0x2;
1538 case 22: return 0x3;
1540 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1541 case 12: return 0xb;
1542 case 18: return 0xf;
1543 case 24: return 0xa;
1544 case 36: return 0xe;
1545 case 48: return 0x9;
1546 case 72: return 0xd;
1547 case 96: return 0x8;
1548 case 108: return 0xc;
1550 /* unsupported rates (should not get there) */
1551 default: return 0xff;
1556 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc,
1557 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr)
1559 struct ieee80211com *ic = &sc->sc_ic;
1560 uint16_t plcp_length;
1563 desc->flags = htole32(flags);
1564 desc->flags |= htole32(len << 16);
1566 desc->flags |= htole32(RT2560_TX_VALID);
1568 desc->physaddr = htole32(physaddr);
1569 desc->wme = htole16(
1571 RT2560_LOGCWMIN(3) |
1572 RT2560_LOGCWMAX(8));
1574 /* setup PLCP fields */
1575 desc->plcp_signal = rt2560_plcp_signal(rate);
1576 desc->plcp_service = 4;
1578 len += IEEE80211_CRC_LEN;
1579 if (RAL_RATE_IS_OFDM(rate)) {
1580 desc->flags |= htole32(RT2560_TX_OFDM);
1582 plcp_length = len & 0xfff;
1583 desc->plcp_length_hi = plcp_length >> 6;
1584 desc->plcp_length_lo = plcp_length & 0x3f;
1586 plcp_length = (16 * len + rate - 1) / rate;
1588 remainder = (16 * len) % 22;
1589 if (remainder != 0 && remainder < 7)
1590 desc->plcp_service |= RT2560_PLCP_LENGEXT;
1592 desc->plcp_length_hi = plcp_length >> 8;
1593 desc->plcp_length_lo = plcp_length & 0xff;
1595 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1596 desc->plcp_signal |= 0x08;
1599 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY)
1600 : htole32(RT2560_TX_BUSY);
1604 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0,
1605 struct ieee80211_node *ni)
1607 struct ieee80211com *ic = &sc->sc_ic;
1608 struct rt2560_tx_desc *desc;
1609 struct rt2560_tx_data *data;
1613 desc = &sc->bcnq.desc[sc->bcnq.cur];
1614 data = &sc->bcnq.data[sc->bcnq.cur];
1616 rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2;
1618 error = bus_dmamap_load_mbuf(sc->bcnq.data_dmat, data->map, m0,
1619 rt2560_dma_map_mbuf, &paddr,
1622 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1628 if (sc->sc_drvbpf != NULL) {
1629 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1632 tap->wt_rate = rate;
1633 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1634 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1635 tap->wt_antenna = sc->tx_ant;
1637 bpf_ptap(sc->sc_drvbpf, m0, tap, sc->sc_txtap_len);
1643 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF |
1644 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, paddr);
1646 DPRINTFN(10, ("sending beacon frame len=%u idx=%u rate=%u\n",
1647 m0->m_pkthdr.len, sc->bcnq.cur, rate));
1649 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1650 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map,
1651 BUS_DMASYNC_PREWRITE);
1653 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT;
1659 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0,
1660 struct ieee80211_node *ni)
1662 struct ieee80211com *ic = &sc->sc_ic;
1663 struct rt2560_tx_desc *desc;
1664 struct rt2560_tx_data *data;
1665 struct ieee80211_frame *wh;
1671 desc = &sc->prioq.desc[sc->prioq.cur];
1672 data = &sc->prioq.data[sc->prioq.cur];
1674 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1676 error = bus_dmamap_load_mbuf(sc->prioq.data_dmat, data->map, m0,
1677 rt2560_dma_map_mbuf, &paddr, 0);
1679 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1685 if (sc->sc_drvbpf != NULL) {
1686 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1689 tap->wt_rate = rate;
1690 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1691 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1692 tap->wt_antenna = sc->tx_ant;
1694 bpf_ptap(sc->sc_drvbpf, m0, tap, sc->sc_txtap_len);
1700 wh = mtod(m0, struct ieee80211_frame *);
1702 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1703 flags |= RT2560_TX_ACK;
1705 dur = rt2560_txtime(RAL_ACK_SIZE, rate, ic->ic_flags) +
1707 *(uint16_t *)wh->i_dur = htole16(dur);
1709 /* tell hardware to add timestamp for probe responses */
1710 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
1711 IEEE80211_FC0_TYPE_MGT &&
1712 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) ==
1713 IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1714 flags |= RT2560_TX_TIMESTAMP;
1717 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, paddr);
1719 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1720 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1721 BUS_DMASYNC_PREWRITE);
1723 DPRINTFN(10, ("sending mgt frame len=%u idx=%u rate=%u\n",
1724 m0->m_pkthdr.len, sc->prioq.cur, rate));
1728 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1729 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1735 * Build a RTS control frame.
1737 static struct mbuf *
1738 rt2560_get_rts(struct rt2560_softc *sc, struct ieee80211_frame *wh,
1741 struct ieee80211_frame_rts *rts;
1744 MGETHDR(m, MB_DONTWAIT, MT_DATA);
1746 sc->sc_ic.ic_stats.is_tx_nobuf++;
1747 device_printf(sc->sc_dev, "could not allocate RTS frame\n");
1751 rts = mtod(m, struct ieee80211_frame_rts *);
1753 rts->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_CTL |
1754 IEEE80211_FC0_SUBTYPE_RTS;
1755 rts->i_fc[1] = IEEE80211_FC1_DIR_NODS;
1756 *(uint16_t *)rts->i_dur = htole16(dur);
1757 IEEE80211_ADDR_COPY(rts->i_ra, wh->i_addr1);
1758 IEEE80211_ADDR_COPY(rts->i_ta, wh->i_addr2);
1760 m->m_pkthdr.len = m->m_len = sizeof(struct ieee80211_frame_rts);
1766 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0,
1767 struct ieee80211_node *ni)
1769 struct ieee80211com *ic = &sc->sc_ic;
1770 struct rt2560_tx_desc *desc;
1771 struct rt2560_tx_data *data;
1772 struct rt2560_node *rn;
1773 struct ieee80211_rateset *rs;
1774 struct ieee80211_frame *wh;
1775 struct ieee80211_key *k;
1782 wh = mtod(m0, struct ieee80211_frame *);
1784 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
1785 rs = &ic->ic_sup_rates[ic->ic_curmode];
1786 rate = rs->rs_rates[ic->ic_fixed_rate];
1789 rn = (struct rt2560_node *)ni;
1790 ni->ni_txrate = ral_rssadapt_choose(&rn->rssadapt, rs, wh,
1791 m0->m_pkthdr.len, NULL, 0);
1792 rate = rs->rs_rates[ni->ni_txrate];
1794 rate &= IEEE80211_RATE_VAL;
1796 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1797 k = ieee80211_crypto_encap(ic, ni, m0);
1803 /* packet header may have moved, reset our local pointer */
1804 wh = mtod(m0, struct ieee80211_frame *);
1808 * IEEE Std 802.11-1999, pp 82: "A STA shall use an RTS/CTS exchange
1809 * for directed frames only when the length of the MPDU is greater
1810 * than the length threshold indicated by [...]" ic_rtsthreshold.
1812 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) &&
1813 m0->m_pkthdr.len > ic->ic_rtsthreshold) {
1816 int rtsrate, ackrate;
1818 rtsrate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1819 ackrate = ieee80211_ack_rate(ni, rate);
1821 dur = rt2560_txtime(m0->m_pkthdr.len + 4, rate, ic->ic_flags) +
1822 rt2560_txtime(RAL_CTS_SIZE, rtsrate, ic->ic_flags) +
1823 rt2560_txtime(RAL_ACK_SIZE, ackrate, ic->ic_flags) +
1826 m = rt2560_get_rts(sc, wh, dur);
1828 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1829 data = &sc->txq.data[sc->txq.cur_encrypt];
1831 error = bus_dmamap_load_mbuf(sc->txq.data_dmat, data->map,
1832 m, rt2560_dma_map_mbuf, &paddr, 0);
1834 device_printf(sc->sc_dev,
1835 "could not map mbuf (error %d)\n", error);
1841 /* avoid multiple free() of the same node for each fragment */
1842 ieee80211_ref_node(ni);
1847 /* RTS frames are not taken into account for rssadapt */
1848 data->id.id_node = NULL;
1850 rt2560_setup_tx_desc(sc, desc, RT2560_TX_ACK |
1851 RT2560_TX_MORE_FRAG, m->m_pkthdr.len, rtsrate, 1, paddr);
1853 bus_dmamap_sync(sc->txq.data_dmat, data->map,
1854 BUS_DMASYNC_PREWRITE);
1857 sc->txq.cur_encrypt =
1858 (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1861 * IEEE Std 802.11-1999: when an RTS/CTS exchange is used, the
1862 * asynchronous data frame shall be transmitted after the CTS
1863 * frame and a SIFS period.
1865 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS;
1868 data = &sc->txq.data[sc->txq.cur_encrypt];
1869 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1871 error = bus_dmamap_load_mbuf(sc->txq.data_dmat, data->map, m0,
1872 rt2560_dma_map_mbuf, &paddr, 0);
1873 if (error != 0 && error != EFBIG) {
1874 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1880 mnew = m_defrag(m0, MB_DONTWAIT);
1882 device_printf(sc->sc_dev,
1883 "could not defragment mbuf\n");
1889 error = bus_dmamap_load_mbuf(sc->txq.data_dmat, data->map,
1890 m0, rt2560_dma_map_mbuf, &paddr,
1893 device_printf(sc->sc_dev,
1894 "could not map mbuf (error %d)\n", error);
1899 /* packet header may have moved, reset our local pointer */
1900 wh = mtod(m0, struct ieee80211_frame *);
1903 if (sc->sc_drvbpf != NULL) {
1904 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1907 tap->wt_rate = rate;
1908 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1909 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1910 tap->wt_antenna = sc->tx_ant;
1912 bpf_ptap(sc->sc_drvbpf, m0, tap, sc->sc_txtap_len);
1918 /* remember link conditions for rate adaptation algorithm */
1919 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) {
1920 data->id.id_len = m0->m_pkthdr.len;
1921 data->id.id_rateidx = ni->ni_txrate;
1922 data->id.id_node = ni;
1923 data->id.id_rssi = ni->ni_rssi;
1925 data->id.id_node = NULL;
1927 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1928 flags |= RT2560_TX_ACK;
1929 dur = rt2560_txtime(RAL_ACK_SIZE, ieee80211_ack_rate(ni, rate),
1930 ic->ic_flags) + RAL_SIFS;
1931 *(uint16_t *)wh->i_dur = htole16(dur);
1934 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, paddr);
1936 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1937 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1938 BUS_DMASYNC_PREWRITE);
1940 DPRINTFN(10, ("sending data frame len=%u idx=%u rate=%u\n",
1941 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate));
1945 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1946 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT);
1952 rt2560_start(struct ifnet *ifp)
1954 struct rt2560_softc *sc = ifp->if_softc;
1955 struct ieee80211com *ic = &sc->sc_ic;
1957 struct ether_header *eh;
1958 struct ieee80211_node *ni;
1960 /* prevent management frames from being sent if we're not ready */
1961 if (!(ifp->if_flags & IFF_RUNNING))
1965 IF_POLL(&ic->ic_mgtq, m0);
1967 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) {
1968 ifp->if_flags |= IFF_OACTIVE;
1971 IF_DEQUEUE(&ic->ic_mgtq, m0);
1973 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif;
1974 m0->m_pkthdr.rcvif = NULL;
1976 if (ic->ic_rawbpf != NULL)
1977 bpf_mtap(ic->ic_rawbpf, m0);
1979 if (rt2560_tx_mgt(sc, m0, ni) != 0)
1983 if (ic->ic_state != IEEE80211_S_RUN)
1985 m0 = ifq_poll(&ifp->if_snd);
1988 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) {
1989 ifp->if_flags |= IFF_OACTIVE;
1992 m0 = ifq_dequeue(&ifp->if_snd, m0);
1994 if (m0->m_len < sizeof (struct ether_header) &&
1995 !(m0 = m_pullup(m0, sizeof (struct ether_header))))
1998 eh = mtod(m0, struct ether_header *);
1999 ni = ieee80211_find_txnode(ic, eh->ether_dhost);
2006 m0 = ieee80211_encap(ic, m0, ni);
2008 ieee80211_free_node(ni);
2012 if (ic->ic_rawbpf != NULL)
2013 bpf_mtap(ic->ic_rawbpf, m0);
2015 if (rt2560_tx_data(sc, m0, ni) != 0) {
2016 ieee80211_free_node(ni);
2022 sc->sc_tx_timer = 5;
2028 rt2560_watchdog(struct ifnet *ifp)
2030 struct rt2560_softc *sc = ifp->if_softc;
2031 struct ieee80211com *ic = &sc->sc_ic;
2035 if (sc->sc_tx_timer > 0) {
2036 if (--sc->sc_tx_timer == 0) {
2037 device_printf(sc->sc_dev, "device timeout\n");
2045 ieee80211_watchdog(ic);
2049 * This function allows for fast channel switching in monitor mode (used by
2050 * net-mgmt/kismet). In IBSS mode, we must explicitly reset the interface to
2051 * generate a new beacon frame.
2054 rt2560_reset(struct ifnet *ifp)
2056 struct rt2560_softc *sc = ifp->if_softc;
2057 struct ieee80211com *ic = &sc->sc_ic;
2059 if (ic->ic_opmode != IEEE80211_M_MONITOR)
2062 rt2560_set_chan(sc, ic->ic_curchan);
2068 rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr)
2070 struct rt2560_softc *sc = ifp->if_softc;
2071 struct ieee80211com *ic = &sc->sc_ic;
2076 if (ifp->if_flags & IFF_UP) {
2077 if (ifp->if_flags & IFF_RUNNING)
2078 rt2560_update_promisc(sc);
2082 if (ifp->if_flags & IFF_RUNNING)
2088 error = ieee80211_ioctl(ic, cmd, data, cr);
2091 if (error == ENETRESET) {
2092 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
2093 (IFF_UP | IFF_RUNNING) &&
2094 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL))
2103 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val)
2108 for (ntries = 0; ntries < 100; ntries++) {
2109 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY))
2113 if (ntries == 100) {
2114 device_printf(sc->sc_dev, "could not write to BBP\n");
2118 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val;
2119 RAL_WRITE(sc, RT2560_BBPCSR, tmp);
2121 DPRINTFN(15, ("BBP R%u <- 0x%02x\n", reg, val));
2125 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg)
2130 val = RT2560_BBP_BUSY | reg << 8;
2131 RAL_WRITE(sc, RT2560_BBPCSR, val);
2133 for (ntries = 0; ntries < 100; ntries++) {
2134 val = RAL_READ(sc, RT2560_BBPCSR);
2135 if (!(val & RT2560_BBP_BUSY))
2140 device_printf(sc->sc_dev, "could not read from BBP\n");
2145 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val)
2150 for (ntries = 0; ntries < 100; ntries++) {
2151 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY))
2155 if (ntries == 100) {
2156 device_printf(sc->sc_dev, "could not write to RF\n");
2160 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 |
2162 RAL_WRITE(sc, RT2560_RFCSR, tmp);
2164 /* remember last written value in sc */
2165 sc->rf_regs[reg] = val;
2167 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff));
2171 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c)
2173 struct ieee80211com *ic = &sc->sc_ic;
2177 chan = ieee80211_chan2ieee(ic, c);
2178 if (chan == 0 || chan == IEEE80211_CHAN_ANY)
2181 if (IEEE80211_IS_CHAN_2GHZ(c))
2182 power = min(sc->txpow[chan - 1], 31);
2186 /* adjust txpower using ifconfig settings */
2187 power -= (100 - ic->ic_txpowlimit) / 8;
2189 DPRINTFN(2, ("setting channel to %u, txpower to %u\n", chan, power));
2191 switch (sc->rf_rev) {
2192 case RT2560_RF_2522:
2193 rt2560_rf_write(sc, RAL_RF1, 0x00814);
2194 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]);
2195 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2198 case RT2560_RF_2523:
2199 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2200 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]);
2201 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044);
2202 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2205 case RT2560_RF_2524:
2206 rt2560_rf_write(sc, RAL_RF1, 0x0c808);
2207 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]);
2208 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2209 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2212 case RT2560_RF_2525:
2213 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2214 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]);
2215 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2216 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2218 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2219 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]);
2220 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2221 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2224 case RT2560_RF_2525E:
2225 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2226 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]);
2227 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2228 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282);
2231 case RT2560_RF_2526:
2232 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]);
2233 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2234 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2236 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]);
2237 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2238 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2242 case RT2560_RF_5222:
2243 for (i = 0; rt2560_rf5222[i].chan != chan; i++);
2245 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1);
2246 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2);
2247 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2248 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4);
2252 if (ic->ic_state != IEEE80211_S_SCAN) {
2253 /* set Japan filter bit for channel 14 */
2254 tmp = rt2560_bbp_read(sc, 70);
2256 tmp &= ~RT2560_JAPAN_FILTER;
2258 tmp |= RT2560_JAPAN_FILTER;
2260 rt2560_bbp_write(sc, 70, tmp);
2262 /* clear CRC errors */
2263 RAL_READ(sc, RT2560_CNT0);
2269 * Disable RF auto-tuning.
2272 rt2560_disable_rf_tune(struct rt2560_softc *sc)
2276 if (sc->rf_rev != RT2560_RF_2523) {
2277 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE;
2278 rt2560_rf_write(sc, RAL_RF1, tmp);
2281 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE;
2282 rt2560_rf_write(sc, RAL_RF3, tmp);
2284 DPRINTFN(2, ("disabling RF autotune\n"));
2289 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF
2293 rt2560_enable_tsf_sync(struct rt2560_softc *sc)
2295 struct ieee80211com *ic = &sc->sc_ic;
2296 uint16_t logcwmin, preload;
2299 /* first, disable TSF synchronization */
2300 RAL_WRITE(sc, RT2560_CSR14, 0);
2302 tmp = 16 * ic->ic_bss->ni_intval;
2303 RAL_WRITE(sc, RT2560_CSR12, tmp);
2305 RAL_WRITE(sc, RT2560_CSR13, 0);
2308 preload = (ic->ic_opmode == IEEE80211_M_STA) ? 384 : 1024;
2309 tmp = logcwmin << 16 | preload;
2310 RAL_WRITE(sc, RT2560_BCNOCSR, tmp);
2312 /* finally, enable TSF synchronization */
2313 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN;
2314 if (ic->ic_opmode == IEEE80211_M_STA)
2315 tmp |= RT2560_ENABLE_TSF_SYNC(1);
2317 tmp |= RT2560_ENABLE_TSF_SYNC(2) |
2318 RT2560_ENABLE_BEACON_GENERATOR;
2319 RAL_WRITE(sc, RT2560_CSR14, tmp);
2321 DPRINTF(("enabling TSF synchronization\n"));
2325 rt2560_update_plcp(struct rt2560_softc *sc)
2327 struct ieee80211com *ic = &sc->sc_ic;
2329 /* no short preamble for 1Mbps */
2330 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400);
2332 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) {
2333 /* values taken from the reference driver */
2334 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401);
2335 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402);
2336 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403);
2338 /* same values as above or'ed 0x8 */
2339 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409);
2340 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a);
2341 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b);
2344 DPRINTF(("updating PLCP for %s preamble\n",
2345 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"));
2349 * This function can be called by ieee80211_set_shortslottime(). Refer to
2350 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed.
2353 rt2560_update_slot(struct ifnet *ifp)
2355 struct rt2560_softc *sc = ifp->if_softc;
2356 struct ieee80211com *ic = &sc->sc_ic;
2358 uint16_t tx_sifs, tx_pifs, tx_difs, eifs;
2361 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
2363 /* update the MAC slot boundaries */
2364 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND;
2365 tx_pifs = tx_sifs + slottime;
2366 tx_difs = tx_sifs + 2 * slottime;
2367 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60;
2369 tmp = RAL_READ(sc, RT2560_CSR11);
2370 tmp = (tmp & ~0x1f00) | slottime << 8;
2371 RAL_WRITE(sc, RT2560_CSR11, tmp);
2373 tmp = tx_pifs << 16 | tx_sifs;
2374 RAL_WRITE(sc, RT2560_CSR18, tmp);
2376 tmp = eifs << 16 | tx_difs;
2377 RAL_WRITE(sc, RT2560_CSR19, tmp);
2379 DPRINTF(("setting slottime to %uus\n", slottime));
2383 rt2560_set_basicrates(struct rt2560_softc *sc)
2385 struct ieee80211com *ic = &sc->sc_ic;
2387 /* update basic rate set */
2388 if (ic->ic_curmode == IEEE80211_MODE_11B) {
2389 /* 11b basic rates: 1, 2Mbps */
2390 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3);
2391 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) {
2392 /* 11a basic rates: 6, 12, 24Mbps */
2393 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150);
2395 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */
2396 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f);
2401 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2)
2405 /* set ON period to 70ms and OFF period to 30ms */
2406 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30;
2407 RAL_WRITE(sc, RT2560_LEDCSR, tmp);
2411 rt2560_set_bssid(struct rt2560_softc *sc, uint8_t *bssid)
2415 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
2416 RAL_WRITE(sc, RT2560_CSR5, tmp);
2418 tmp = bssid[4] | bssid[5] << 8;
2419 RAL_WRITE(sc, RT2560_CSR6, tmp);
2421 DPRINTF(("setting BSSID to %6D\n", bssid, ":"));
2425 rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2429 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
2430 RAL_WRITE(sc, RT2560_CSR3, tmp);
2432 tmp = addr[4] | addr[5] << 8;
2433 RAL_WRITE(sc, RT2560_CSR4, tmp);
2435 DPRINTF(("setting MAC address to %6D\n", addr, ":"));
2439 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2443 tmp = RAL_READ(sc, RT2560_CSR3);
2444 addr[0] = tmp & 0xff;
2445 addr[1] = (tmp >> 8) & 0xff;
2446 addr[2] = (tmp >> 16) & 0xff;
2447 addr[3] = (tmp >> 24);
2449 tmp = RAL_READ(sc, RT2560_CSR4);
2450 addr[4] = tmp & 0xff;
2451 addr[5] = (tmp >> 8) & 0xff;
2455 rt2560_update_promisc(struct rt2560_softc *sc)
2457 struct ifnet *ifp = sc->sc_ic.ic_ifp;
2460 tmp = RAL_READ(sc, RT2560_RXCSR0);
2462 tmp &= ~RT2560_DROP_NOT_TO_ME;
2463 if (!(ifp->if_flags & IFF_PROMISC))
2464 tmp |= RT2560_DROP_NOT_TO_ME;
2466 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2468 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
2469 "entering" : "leaving"));
2473 rt2560_get_rf(int rev)
2476 case RT2560_RF_2522: return "RT2522";
2477 case RT2560_RF_2523: return "RT2523";
2478 case RT2560_RF_2524: return "RT2524";
2479 case RT2560_RF_2525: return "RT2525";
2480 case RT2560_RF_2525E: return "RT2525e";
2481 case RT2560_RF_2526: return "RT2526";
2482 case RT2560_RF_5222: return "RT5222";
2483 default: return "unknown";
2488 rt2560_read_eeprom(struct rt2560_softc *sc)
2493 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0);
2494 sc->rf_rev = (val >> 11) & 0x7;
2495 sc->hw_radio = (val >> 10) & 0x1;
2496 sc->led_mode = (val >> 6) & 0x7;
2497 sc->rx_ant = (val >> 4) & 0x3;
2498 sc->tx_ant = (val >> 2) & 0x3;
2499 sc->nb_ant = val & 0x3;
2501 /* read default values for BBP registers */
2502 for (i = 0; i < 16; i++) {
2503 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i);
2504 sc->bbp_prom[i].reg = val >> 8;
2505 sc->bbp_prom[i].val = val & 0xff;
2508 /* read Tx power for all b/g channels */
2509 for (i = 0; i < 14 / 2; i++) {
2510 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i);
2511 sc->txpow[i * 2] = val >> 8;
2512 sc->txpow[i * 2 + 1] = val & 0xff;
2515 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE);
2516 if ((val & 0xff00) == 0xff00)
2517 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR;
2519 sc->rssi_corr = val >> 8;
2520 DPRINTF(("rssi correction %d, calibrate 0x%02x\n",
2521 sc->rssi_corr, val));
2525 rt2560_bbp_init(struct rt2560_softc *sc)
2527 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2530 /* wait for BBP to be ready */
2531 for (ntries = 0; ntries < 100; ntries++) {
2532 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0)
2536 if (ntries == 100) {
2537 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
2541 rt2560_set_txantenna(sc, sc->tx_ant);
2542 rt2560_set_rxantenna(sc, sc->rx_ant);
2544 /* initialize BBP registers to default values */
2545 for (i = 0; i < N(rt2560_def_bbp); i++) {
2546 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg,
2547 rt2560_def_bbp[i].val);
2550 /* initialize BBP registers to values stored in EEPROM */
2551 for (i = 0; i < 16; i++) {
2552 if (sc->bbp_prom[i].reg == 0xff)
2554 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
2563 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna)
2568 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK;
2570 tx |= RT2560_BBP_ANTA;
2571 else if (antenna == 2)
2572 tx |= RT2560_BBP_ANTB;
2574 tx |= RT2560_BBP_DIVERSITY;
2576 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */
2577 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 ||
2578 sc->rf_rev == RT2560_RF_5222)
2579 tx |= RT2560_BBP_FLIPIQ;
2581 rt2560_bbp_write(sc, RT2560_BBP_TX, tx);
2583 /* update values for CCK and OFDM in BBPCSR1 */
2584 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007;
2585 tmp |= (tx & 0x7) << 16 | (tx & 0x7);
2586 RAL_WRITE(sc, RT2560_BBPCSR1, tmp);
2590 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna)
2594 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK;
2596 rx |= RT2560_BBP_ANTA;
2597 else if (antenna == 2)
2598 rx |= RT2560_BBP_ANTB;
2600 rx |= RT2560_BBP_DIVERSITY;
2602 /* need to force no I/Q flip for RF 2525e and 2526 */
2603 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526)
2604 rx &= ~RT2560_BBP_FLIPIQ;
2606 rt2560_bbp_write(sc, RT2560_BBP_RX, rx);
2610 rt2560_init(void *priv)
2612 #define N(a) (sizeof (a) / sizeof ((a)[0]))
2613 struct rt2560_softc *sc = priv;
2614 struct ieee80211com *ic = &sc->sc_ic;
2615 struct ifnet *ifp = ic->ic_ifp;
2621 /* setup tx rings */
2622 tmp = RT2560_PRIO_RING_COUNT << 24 |
2623 RT2560_ATIM_RING_COUNT << 16 |
2624 RT2560_TX_RING_COUNT << 8 |
2625 RT2560_TX_DESC_SIZE;
2627 /* rings must be initialized in this exact order */
2628 RAL_WRITE(sc, RT2560_TXCSR2, tmp);
2629 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr);
2630 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr);
2631 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr);
2632 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr);
2635 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE;
2637 RAL_WRITE(sc, RT2560_RXCSR1, tmp);
2638 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr);
2640 /* initialize MAC registers to default values */
2641 for (i = 0; i < N(rt2560_def_mac); i++)
2642 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val);
2644 IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp));
2645 rt2560_set_macaddr(sc, ic->ic_myaddr);
2647 /* set basic rate set (will be updated later) */
2648 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153);
2650 rt2560_update_slot(ifp);
2651 rt2560_update_plcp(sc);
2652 rt2560_update_led(sc, 0, 0);
2654 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2655 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY);
2657 if (rt2560_bbp_init(sc) != 0) {
2662 /* set default BSS channel */
2663 rt2560_set_chan(sc, ic->ic_curchan);
2666 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR;
2667 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2668 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR;
2669 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2670 tmp |= RT2560_DROP_TODS;
2671 if (!(ifp->if_flags & IFF_PROMISC))
2672 tmp |= RT2560_DROP_NOT_TO_ME;
2674 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2676 /* clear old FCS and Rx FIFO errors */
2677 RAL_READ(sc, RT2560_CNT0);
2678 RAL_READ(sc, RT2560_CNT4);
2680 /* clear any pending interrupts */
2681 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff);
2683 /* enable interrupts */
2684 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
2686 ifp->if_flags &= ~IFF_OACTIVE;
2687 ifp->if_flags |= IFF_RUNNING;
2690 if (ic->ic_flags & IEEE80211_F_PRIVACY) {
2693 ic->ic_flags &= ~IEEE80211_F_DROPUNENC;
2694 for (i = 0; i < IEEE80211_WEP_NKID; ++i) {
2695 struct ieee80211_key *wk = &ic->ic_nw_keys[i];
2697 if (wk->wk_keylen == 0)
2699 if (wk->wk_flags & IEEE80211_KEY_XMIT)
2700 wk->wk_flags |= IEEE80211_KEY_SWCRYPT;
2704 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2705 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
2706 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
2708 ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
2713 rt2560_stop(void *priv)
2715 struct rt2560_softc *sc = priv;
2716 struct ieee80211com *ic = &sc->sc_ic;
2717 struct ifnet *ifp = ic->ic_ifp;
2719 ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
2721 sc->sc_tx_timer = 0;
2723 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
2726 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX);
2729 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX);
2731 /* reset ASIC (imply reset BBP) */
2732 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2733 RAL_WRITE(sc, RT2560_CSR1, 0);
2735 /* disable interrupts */
2736 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
2738 /* reset Tx and Rx rings */
2739 rt2560_reset_tx_ring(sc, &sc->txq);
2740 rt2560_reset_tx_ring(sc, &sc->atimq);
2741 rt2560_reset_tx_ring(sc, &sc->prioq);
2742 rt2560_reset_tx_ring(sc, &sc->bcnq);
2743 rt2560_reset_rx_ring(sc, &sc->rxq);
2747 rt2560_dma_map_mbuf(void *arg, bus_dma_segment_t *seg, int nseg,
2748 bus_size_t map_size __unused, int error)
2753 KASSERT(nseg == 1, ("too many dma segments\n"));
2754 *((bus_addr_t *)arg) = seg->ds_addr;