1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2007-2009 Sam Leffler, Errno Consulting
5 * Copyright (c) 2007-2008 Marvell Semiconductor, Inc.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer,
13 * without modification.
14 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
15 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
16 * redistribution must be conditioned upon including a substantially
17 * similar Disclaimer requirement for further binary redistribution.
18 *
19 * NO WARRANTY
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
23 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
24 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
25 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
28 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGES.
31 */
32
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
35
36 /*
37 * Driver for the Marvell 88W8363 Wireless LAN controller.
38 */
39
40 #include "opt_inet.h"
41 #include "opt_mwl.h"
42 #include "opt_wlan.h"
43
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/sysctl.h>
47 #include <sys/mbuf.h>
48 #include <sys/malloc.h>
49 #include <sys/lock.h>
50 #include <sys/mutex.h>
51 #include <sys/kernel.h>
52 #include <sys/socket.h>
53 #include <sys/sockio.h>
54 #include <sys/errno.h>
55 #include <sys/callout.h>
56 #include <sys/bus.h>
57 #include <sys/endian.h>
58 #include <sys/kthread.h>
59 #include <sys/taskqueue.h>
60
61 #include <machine/bus.h>
62
63 #include <net/if.h>
64 #include <net/if_var.h>
65 #include <net/if_dl.h>
66 #include <net/if_media.h>
67 #include <net/if_types.h>
68 #include <net/if_arp.h>
69 #include <net/ethernet.h>
70 #include <net/if_llc.h>
71
72 #include <net/bpf.h>
73
74 #include <net80211/ieee80211_var.h>
75 #include <net80211/ieee80211_input.h>
76 #include <net80211/ieee80211_regdomain.h>
77
78 #ifdef INET
79 #include <netinet/in.h>
80 #include <netinet/if_ether.h>
81 #endif /* INET */
82
83 #include <dev/mwl/if_mwlvar.h>
84 #include <dev/mwl/mwldiag.h>
85
86 static struct ieee80211vap *mwl_vap_create(struct ieee80211com *,
87 const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
88 const uint8_t [IEEE80211_ADDR_LEN],
89 const uint8_t [IEEE80211_ADDR_LEN]);
90 static void mwl_vap_delete(struct ieee80211vap *);
91 static int mwl_setupdma(struct mwl_softc *);
92 static int mwl_hal_reset(struct mwl_softc *sc);
93 static int mwl_init(struct mwl_softc *);
94 static void mwl_parent(struct ieee80211com *);
95 static int mwl_reset(struct ieee80211vap *, u_long);
96 static void mwl_stop(struct mwl_softc *);
97 static void mwl_start(struct mwl_softc *);
98 static int mwl_transmit(struct ieee80211com *, struct mbuf *);
99 static int mwl_raw_xmit(struct ieee80211_node *, struct mbuf *,
100 const struct ieee80211_bpf_params *);
101 static int mwl_media_change(struct ifnet *);
102 static void mwl_watchdog(void *);
103 static int mwl_ioctl(struct ieee80211com *, u_long, void *);
104 static void mwl_radar_proc(void *, int);
105 static void mwl_chanswitch_proc(void *, int);
106 static void mwl_bawatchdog_proc(void *, int);
107 static int mwl_key_alloc(struct ieee80211vap *,
108 struct ieee80211_key *,
109 ieee80211_keyix *, ieee80211_keyix *);
110 static int mwl_key_delete(struct ieee80211vap *,
111 const struct ieee80211_key *);
112 static int mwl_key_set(struct ieee80211vap *,
113 const struct ieee80211_key *);
114 static int _mwl_key_set(struct ieee80211vap *,
115 const struct ieee80211_key *,
116 const uint8_t mac[IEEE80211_ADDR_LEN]);
117 static int mwl_mode_init(struct mwl_softc *);
118 static void mwl_update_mcast(struct ieee80211com *);
119 static void mwl_update_promisc(struct ieee80211com *);
120 static void mwl_updateslot(struct ieee80211com *);
121 static int mwl_beacon_setup(struct ieee80211vap *);
122 static void mwl_beacon_update(struct ieee80211vap *, int);
123 #ifdef MWL_HOST_PS_SUPPORT
124 static void mwl_update_ps(struct ieee80211vap *, int);
125 static int mwl_set_tim(struct ieee80211_node *, int);
126 #endif
127 static int mwl_dma_setup(struct mwl_softc *);
128 static void mwl_dma_cleanup(struct mwl_softc *);
129 static struct ieee80211_node *mwl_node_alloc(struct ieee80211vap *,
130 const uint8_t [IEEE80211_ADDR_LEN]);
131 static void mwl_node_cleanup(struct ieee80211_node *);
132 static void mwl_node_drain(struct ieee80211_node *);
133 static void mwl_node_getsignal(const struct ieee80211_node *,
134 int8_t *, int8_t *);
135 static void mwl_node_getmimoinfo(const struct ieee80211_node *,
136 struct ieee80211_mimo_info *);
137 static int mwl_rxbuf_init(struct mwl_softc *, struct mwl_rxbuf *);
138 static void mwl_rx_proc(void *, int);
139 static void mwl_txq_init(struct mwl_softc *sc, struct mwl_txq *, int);
140 static int mwl_tx_setup(struct mwl_softc *, int, int);
141 static int mwl_wme_update(struct ieee80211com *);
142 static void mwl_tx_cleanupq(struct mwl_softc *, struct mwl_txq *);
143 static void mwl_tx_cleanup(struct mwl_softc *);
144 static uint16_t mwl_calcformat(uint8_t rate, const struct ieee80211_node *);
145 static int mwl_tx_start(struct mwl_softc *, struct ieee80211_node *,
146 struct mwl_txbuf *, struct mbuf *);
147 static void mwl_tx_proc(void *, int);
148 static int mwl_chan_set(struct mwl_softc *, struct ieee80211_channel *);
149 static void mwl_draintxq(struct mwl_softc *);
150 static void mwl_cleartxq(struct mwl_softc *, struct ieee80211vap *);
151 static int mwl_recv_action(struct ieee80211_node *,
152 const struct ieee80211_frame *,
153 const uint8_t *, const uint8_t *);
154 static int mwl_addba_request(struct ieee80211_node *,
155 struct ieee80211_tx_ampdu *, int dialogtoken,
156 int baparamset, int batimeout);
157 static int mwl_addba_response(struct ieee80211_node *,
158 struct ieee80211_tx_ampdu *, int status,
159 int baparamset, int batimeout);
160 static void mwl_addba_stop(struct ieee80211_node *,
161 struct ieee80211_tx_ampdu *);
162 static int mwl_startrecv(struct mwl_softc *);
163 static MWL_HAL_APMODE mwl_getapmode(const struct ieee80211vap *,
164 struct ieee80211_channel *);
165 static int mwl_setapmode(struct ieee80211vap *, struct ieee80211_channel*);
166 static void mwl_scan_start(struct ieee80211com *);
167 static void mwl_scan_end(struct ieee80211com *);
168 static void mwl_set_channel(struct ieee80211com *);
169 static int mwl_peerstadb(struct ieee80211_node *,
170 int aid, int staid, MWL_HAL_PEERINFO *pi);
171 static int mwl_localstadb(struct ieee80211vap *);
172 static int mwl_newstate(struct ieee80211vap *, enum ieee80211_state, int);
173 static int allocstaid(struct mwl_softc *sc, int aid);
174 static void delstaid(struct mwl_softc *sc, int staid);
175 static void mwl_newassoc(struct ieee80211_node *, int);
176 static void mwl_agestations(void *);
177 static int mwl_setregdomain(struct ieee80211com *,
178 struct ieee80211_regdomain *, int,
179 struct ieee80211_channel []);
180 static void mwl_getradiocaps(struct ieee80211com *, int, int *,
181 struct ieee80211_channel []);
182 static int mwl_getchannels(struct mwl_softc *);
183
184 static void mwl_sysctlattach(struct mwl_softc *);
185 static void mwl_announce(struct mwl_softc *);
186
187 SYSCTL_NODE(_hw, OID_AUTO, mwl, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
188 "Marvell driver parameters");
189
190 static int mwl_rxdesc = MWL_RXDESC; /* # rx desc's to allocate */
191 SYSCTL_INT(_hw_mwl, OID_AUTO, rxdesc, CTLFLAG_RW, &mwl_rxdesc,
192 0, "rx descriptors allocated");
193 static int mwl_rxbuf = MWL_RXBUF; /* # rx buffers to allocate */
194 SYSCTL_INT(_hw_mwl, OID_AUTO, rxbuf, CTLFLAG_RWTUN, &mwl_rxbuf,
195 0, "rx buffers allocated");
196 static int mwl_txbuf = MWL_TXBUF; /* # tx buffers to allocate */
197 SYSCTL_INT(_hw_mwl, OID_AUTO, txbuf, CTLFLAG_RWTUN, &mwl_txbuf,
198 0, "tx buffers allocated");
199 static int mwl_txcoalesce = 8; /* # tx packets to q before poking f/w*/
200 SYSCTL_INT(_hw_mwl, OID_AUTO, txcoalesce, CTLFLAG_RWTUN, &mwl_txcoalesce,
201 0, "tx buffers to send at once");
202 static int mwl_rxquota = MWL_RXBUF; /* # max buffers to process */
203 SYSCTL_INT(_hw_mwl, OID_AUTO, rxquota, CTLFLAG_RWTUN, &mwl_rxquota,
204 0, "max rx buffers to process per interrupt");
205 static int mwl_rxdmalow = 3; /* # min buffers for wakeup */
206 SYSCTL_INT(_hw_mwl, OID_AUTO, rxdmalow, CTLFLAG_RWTUN, &mwl_rxdmalow,
207 0, "min free rx buffers before restarting traffic");
208
209 #ifdef MWL_DEBUG
210 static int mwl_debug = 0;
211 SYSCTL_INT(_hw_mwl, OID_AUTO, debug, CTLFLAG_RWTUN, &mwl_debug,
212 0, "control debugging printfs");
213 enum {
214 MWL_DEBUG_XMIT = 0x00000001, /* basic xmit operation */
215 MWL_DEBUG_XMIT_DESC = 0x00000002, /* xmit descriptors */
216 MWL_DEBUG_RECV = 0x00000004, /* basic recv operation */
217 MWL_DEBUG_RECV_DESC = 0x00000008, /* recv descriptors */
218 MWL_DEBUG_RESET = 0x00000010, /* reset processing */
219 MWL_DEBUG_BEACON = 0x00000020, /* beacon handling */
220 MWL_DEBUG_INTR = 0x00000040, /* ISR */
221 MWL_DEBUG_TX_PROC = 0x00000080, /* tx ISR proc */
222 MWL_DEBUG_RX_PROC = 0x00000100, /* rx ISR proc */
223 MWL_DEBUG_KEYCACHE = 0x00000200, /* key cache management */
224 MWL_DEBUG_STATE = 0x00000400, /* 802.11 state transitions */
225 MWL_DEBUG_NODE = 0x00000800, /* node management */
226 MWL_DEBUG_RECV_ALL = 0x00001000, /* trace all frames (beacons) */
227 MWL_DEBUG_TSO = 0x00002000, /* TSO processing */
228 MWL_DEBUG_AMPDU = 0x00004000, /* BA stream handling */
229 MWL_DEBUG_ANY = 0xffffffff
230 };
231 #define IS_BEACON(wh) \
232 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK|IEEE80211_FC0_SUBTYPE_MASK)) == \
233 (IEEE80211_FC0_TYPE_MGT|IEEE80211_FC0_SUBTYPE_BEACON))
234 #define IFF_DUMPPKTS_RECV(sc, wh) \
235 ((sc->sc_debug & MWL_DEBUG_RECV) && \
236 ((sc->sc_debug & MWL_DEBUG_RECV_ALL) || !IS_BEACON(wh)))
237 #define IFF_DUMPPKTS_XMIT(sc) \
238 (sc->sc_debug & MWL_DEBUG_XMIT)
239
240 #define DPRINTF(sc, m, fmt, ...) do { \
241 if (sc->sc_debug & (m)) \
242 printf(fmt, __VA_ARGS__); \
243 } while (0)
244 #define KEYPRINTF(sc, hk, mac) do { \
245 if (sc->sc_debug & MWL_DEBUG_KEYCACHE) \
246 mwl_keyprint(sc, __func__, hk, mac); \
247 } while (0)
248 static void mwl_printrxbuf(const struct mwl_rxbuf *bf, u_int ix);
249 static void mwl_printtxbuf(const struct mwl_txbuf *bf, u_int qnum, u_int ix);
250 #else
251 #define IFF_DUMPPKTS_RECV(sc, wh) 0
252 #define IFF_DUMPPKTS_XMIT(sc) 0
253 #define DPRINTF(sc, m, fmt, ...) do { (void )sc; } while (0)
254 #define KEYPRINTF(sc, k, mac) do { (void )sc; } while (0)
255 #endif
256
257 static MALLOC_DEFINE(M_MWLDEV, "mwldev", "mwl driver dma buffers");
258
259 /*
260 * Each packet has fixed front matter: a 2-byte length
261 * of the payload, followed by a 4-address 802.11 header
262 * (regardless of the actual header and always w/o any
263 * QoS header). The payload then follows.
264 */
265 struct mwltxrec {
266 uint16_t fwlen;
267 struct ieee80211_frame_addr4 wh;
268 } __packed;
269
270 /*
271 * Read/Write shorthands for accesses to BAR 0. Note
272 * that all BAR 1 operations are done in the "hal" and
273 * there should be no reference to them here.
274 */
275 #ifdef MWL_DEBUG
276 static __inline uint32_t
RD4(struct mwl_softc * sc,bus_size_t off)277 RD4(struct mwl_softc *sc, bus_size_t off)
278 {
279 return bus_space_read_4(sc->sc_io0t, sc->sc_io0h, off);
280 }
281 #endif
282
283 static __inline void
WR4(struct mwl_softc * sc,bus_size_t off,uint32_t val)284 WR4(struct mwl_softc *sc, bus_size_t off, uint32_t val)
285 {
286 bus_space_write_4(sc->sc_io0t, sc->sc_io0h, off, val);
287 }
288
289 int
mwl_attach(uint16_t devid,struct mwl_softc * sc)290 mwl_attach(uint16_t devid, struct mwl_softc *sc)
291 {
292 struct ieee80211com *ic = &sc->sc_ic;
293 struct mwl_hal *mh;
294 int error = 0;
295
296 DPRINTF(sc, MWL_DEBUG_ANY, "%s: devid 0x%x\n", __func__, devid);
297
298 /*
299 * Setup the RX free list lock early, so it can be consistently
300 * removed.
301 */
302 MWL_RXFREE_INIT(sc);
303
304 mh = mwl_hal_attach(sc->sc_dev, devid,
305 sc->sc_io1h, sc->sc_io1t, sc->sc_dmat);
306 if (mh == NULL) {
307 device_printf(sc->sc_dev, "unable to attach HAL\n");
308 error = EIO;
309 goto bad;
310 }
311 sc->sc_mh = mh;
312 /*
313 * Load firmware so we can get setup. We arbitrarily
314 * pick station firmware; we'll re-load firmware as
315 * needed so setting up the wrong mode isn't a big deal.
316 */
317 if (mwl_hal_fwload(mh, NULL) != 0) {
318 device_printf(sc->sc_dev, "unable to setup builtin firmware\n");
319 error = EIO;
320 goto bad1;
321 }
322 if (mwl_hal_gethwspecs(mh, &sc->sc_hwspecs) != 0) {
323 device_printf(sc->sc_dev, "unable to fetch h/w specs\n");
324 error = EIO;
325 goto bad1;
326 }
327 error = mwl_getchannels(sc);
328 if (error != 0)
329 goto bad1;
330
331 sc->sc_txantenna = 0; /* h/w default */
332 sc->sc_rxantenna = 0; /* h/w default */
333 sc->sc_invalid = 0; /* ready to go, enable int handling */
334 sc->sc_ageinterval = MWL_AGEINTERVAL;
335
336 /*
337 * Allocate tx+rx descriptors and populate the lists.
338 * We immediately push the information to the firmware
339 * as otherwise it gets upset.
340 */
341 error = mwl_dma_setup(sc);
342 if (error != 0) {
343 device_printf(sc->sc_dev, "failed to setup descriptors: %d\n",
344 error);
345 goto bad1;
346 }
347 error = mwl_setupdma(sc); /* push to firmware */
348 if (error != 0) /* NB: mwl_setupdma prints msg */
349 goto bad1;
350
351 callout_init(&sc->sc_timer, 1);
352 callout_init_mtx(&sc->sc_watchdog, &sc->sc_mtx, 0);
353 mbufq_init(&sc->sc_snd, ifqmaxlen);
354
355 sc->sc_tq = taskqueue_create("mwl_taskq", M_NOWAIT,
356 taskqueue_thread_enqueue, &sc->sc_tq);
357 taskqueue_start_threads(&sc->sc_tq, 1, PI_NET,
358 "%s taskq", device_get_nameunit(sc->sc_dev));
359
360 NET_TASK_INIT(&sc->sc_rxtask, 0, mwl_rx_proc, sc);
361 TASK_INIT(&sc->sc_radartask, 0, mwl_radar_proc, sc);
362 TASK_INIT(&sc->sc_chanswitchtask, 0, mwl_chanswitch_proc, sc);
363 TASK_INIT(&sc->sc_bawatchdogtask, 0, mwl_bawatchdog_proc, sc);
364
365 /* NB: insure BK queue is the lowest priority h/w queue */
366 if (!mwl_tx_setup(sc, WME_AC_BK, MWL_WME_AC_BK)) {
367 device_printf(sc->sc_dev,
368 "unable to setup xmit queue for %s traffic!\n",
369 ieee80211_wme_acnames[WME_AC_BK]);
370 error = EIO;
371 goto bad2;
372 }
373 if (!mwl_tx_setup(sc, WME_AC_BE, MWL_WME_AC_BE) ||
374 !mwl_tx_setup(sc, WME_AC_VI, MWL_WME_AC_VI) ||
375 !mwl_tx_setup(sc, WME_AC_VO, MWL_WME_AC_VO)) {
376 /*
377 * Not enough hardware tx queues to properly do WME;
378 * just punt and assign them all to the same h/w queue.
379 * We could do a better job of this if, for example,
380 * we allocate queues when we switch from station to
381 * AP mode.
382 */
383 if (sc->sc_ac2q[WME_AC_VI] != NULL)
384 mwl_tx_cleanupq(sc, sc->sc_ac2q[WME_AC_VI]);
385 if (sc->sc_ac2q[WME_AC_BE] != NULL)
386 mwl_tx_cleanupq(sc, sc->sc_ac2q[WME_AC_BE]);
387 sc->sc_ac2q[WME_AC_BE] = sc->sc_ac2q[WME_AC_BK];
388 sc->sc_ac2q[WME_AC_VI] = sc->sc_ac2q[WME_AC_BK];
389 sc->sc_ac2q[WME_AC_VO] = sc->sc_ac2q[WME_AC_BK];
390 }
391 TASK_INIT(&sc->sc_txtask, 0, mwl_tx_proc, sc);
392
393 ic->ic_softc = sc;
394 ic->ic_name = device_get_nameunit(sc->sc_dev);
395 /* XXX not right but it's not used anywhere important */
396 ic->ic_phytype = IEEE80211_T_OFDM;
397 ic->ic_opmode = IEEE80211_M_STA;
398 ic->ic_caps =
399 IEEE80211_C_STA /* station mode supported */
400 | IEEE80211_C_HOSTAP /* hostap mode */
401 | IEEE80211_C_MONITOR /* monitor mode */
402 #if 0
403 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */
404 | IEEE80211_C_AHDEMO /* adhoc demo mode */
405 #endif
406 | IEEE80211_C_MBSS /* mesh point link mode */
407 | IEEE80211_C_WDS /* WDS supported */
408 | IEEE80211_C_SHPREAMBLE /* short preamble supported */
409 | IEEE80211_C_SHSLOT /* short slot time supported */
410 | IEEE80211_C_WME /* WME/WMM supported */
411 | IEEE80211_C_BURST /* xmit bursting supported */
412 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */
413 | IEEE80211_C_BGSCAN /* capable of bg scanning */
414 | IEEE80211_C_TXFRAG /* handle tx frags */
415 | IEEE80211_C_TXPMGT /* capable of txpow mgt */
416 | IEEE80211_C_DFS /* DFS supported */
417 ;
418
419 ic->ic_htcaps =
420 IEEE80211_HTCAP_SMPS_ENA /* SM PS mode enabled */
421 | IEEE80211_HTCAP_CHWIDTH40 /* 40MHz channel width */
422 | IEEE80211_HTCAP_SHORTGI20 /* short GI in 20MHz */
423 | IEEE80211_HTCAP_SHORTGI40 /* short GI in 40MHz */
424 | IEEE80211_HTCAP_RXSTBC_2STREAM/* 1-2 spatial streams */
425 #if MWL_AGGR_SIZE == 7935
426 | IEEE80211_HTCAP_MAXAMSDU_7935 /* max A-MSDU length */
427 #else
428 | IEEE80211_HTCAP_MAXAMSDU_3839 /* max A-MSDU length */
429 #endif
430 #if 0
431 | IEEE80211_HTCAP_PSMP /* PSMP supported */
432 | IEEE80211_HTCAP_40INTOLERANT /* 40MHz intolerant */
433 #endif
434 /* s/w capabilities */
435 | IEEE80211_HTC_HT /* HT operation */
436 | IEEE80211_HTC_AMPDU /* tx A-MPDU */
437 | IEEE80211_HTC_AMSDU /* tx A-MSDU */
438 | IEEE80211_HTC_SMPS /* SMPS available */
439 ;
440
441 /*
442 * Mark h/w crypto support.
443 * XXX no way to query h/w support.
444 */
445 ic->ic_cryptocaps |= IEEE80211_CRYPTO_WEP
446 | IEEE80211_CRYPTO_AES_CCM
447 | IEEE80211_CRYPTO_TKIP
448 | IEEE80211_CRYPTO_TKIPMIC
449 ;
450 /*
451 * Transmit requires space in the packet for a special
452 * format transmit record and optional padding between
453 * this record and the payload. Ask the net80211 layer
454 * to arrange this when encapsulating packets so we can
455 * add it efficiently.
456 */
457 ic->ic_headroom = sizeof(struct mwltxrec) -
458 sizeof(struct ieee80211_frame);
459
460 IEEE80211_ADDR_COPY(ic->ic_macaddr, sc->sc_hwspecs.macAddr);
461
462 /* call MI attach routine. */
463 ieee80211_ifattach(ic);
464 ic->ic_setregdomain = mwl_setregdomain;
465 ic->ic_getradiocaps = mwl_getradiocaps;
466 /* override default methods */
467 ic->ic_raw_xmit = mwl_raw_xmit;
468 ic->ic_newassoc = mwl_newassoc;
469 ic->ic_updateslot = mwl_updateslot;
470 ic->ic_update_mcast = mwl_update_mcast;
471 ic->ic_update_promisc = mwl_update_promisc;
472 ic->ic_wme.wme_update = mwl_wme_update;
473 ic->ic_transmit = mwl_transmit;
474 ic->ic_ioctl = mwl_ioctl;
475 ic->ic_parent = mwl_parent;
476
477 ic->ic_node_alloc = mwl_node_alloc;
478 sc->sc_node_cleanup = ic->ic_node_cleanup;
479 ic->ic_node_cleanup = mwl_node_cleanup;
480 sc->sc_node_drain = ic->ic_node_drain;
481 ic->ic_node_drain = mwl_node_drain;
482 ic->ic_node_getsignal = mwl_node_getsignal;
483 ic->ic_node_getmimoinfo = mwl_node_getmimoinfo;
484
485 ic->ic_scan_start = mwl_scan_start;
486 ic->ic_scan_end = mwl_scan_end;
487 ic->ic_set_channel = mwl_set_channel;
488
489 sc->sc_recv_action = ic->ic_recv_action;
490 ic->ic_recv_action = mwl_recv_action;
491 sc->sc_addba_request = ic->ic_addba_request;
492 ic->ic_addba_request = mwl_addba_request;
493 sc->sc_addba_response = ic->ic_addba_response;
494 ic->ic_addba_response = mwl_addba_response;
495 sc->sc_addba_stop = ic->ic_addba_stop;
496 ic->ic_addba_stop = mwl_addba_stop;
497
498 ic->ic_vap_create = mwl_vap_create;
499 ic->ic_vap_delete = mwl_vap_delete;
500
501 ieee80211_radiotap_attach(ic,
502 &sc->sc_tx_th.wt_ihdr, sizeof(sc->sc_tx_th),
503 MWL_TX_RADIOTAP_PRESENT,
504 &sc->sc_rx_th.wr_ihdr, sizeof(sc->sc_rx_th),
505 MWL_RX_RADIOTAP_PRESENT);
506 /*
507 * Setup dynamic sysctl's now that country code and
508 * regdomain are available from the hal.
509 */
510 mwl_sysctlattach(sc);
511
512 if (bootverbose)
513 ieee80211_announce(ic);
514 mwl_announce(sc);
515 return 0;
516 bad2:
517 mwl_dma_cleanup(sc);
518 bad1:
519 mwl_hal_detach(mh);
520 bad:
521 MWL_RXFREE_DESTROY(sc);
522 sc->sc_invalid = 1;
523 return error;
524 }
525
526 int
mwl_detach(struct mwl_softc * sc)527 mwl_detach(struct mwl_softc *sc)
528 {
529 struct ieee80211com *ic = &sc->sc_ic;
530
531 MWL_LOCK(sc);
532 mwl_stop(sc);
533 MWL_UNLOCK(sc);
534 /*
535 * NB: the order of these is important:
536 * o call the 802.11 layer before detaching the hal to
537 * insure callbacks into the driver to delete global
538 * key cache entries can be handled
539 * o reclaim the tx queue data structures after calling
540 * the 802.11 layer as we'll get called back to reclaim
541 * node state and potentially want to use them
542 * o to cleanup the tx queues the hal is called, so detach
543 * it last
544 * Other than that, it's straightforward...
545 */
546 ieee80211_ifdetach(ic);
547 callout_drain(&sc->sc_watchdog);
548 mwl_dma_cleanup(sc);
549 MWL_RXFREE_DESTROY(sc);
550 mwl_tx_cleanup(sc);
551 mwl_hal_detach(sc->sc_mh);
552 mbufq_drain(&sc->sc_snd);
553
554 return 0;
555 }
556
557 /*
558 * MAC address handling for multiple BSS on the same radio.
559 * The first vap uses the MAC address from the EEPROM. For
560 * subsequent vap's we set the U/L bit (bit 1) in the MAC
561 * address and use the next six bits as an index.
562 */
563 static void
assign_address(struct mwl_softc * sc,uint8_t mac[IEEE80211_ADDR_LEN],int clone)564 assign_address(struct mwl_softc *sc, uint8_t mac[IEEE80211_ADDR_LEN], int clone)
565 {
566 int i;
567
568 if (clone && mwl_hal_ismbsscapable(sc->sc_mh)) {
569 /* NB: we only do this if h/w supports multiple bssid */
570 for (i = 0; i < 32; i++)
571 if ((sc->sc_bssidmask & (1<<i)) == 0)
572 break;
573 if (i != 0)
574 mac[0] |= (i << 2)|0x2;
575 } else
576 i = 0;
577 sc->sc_bssidmask |= 1<<i;
578 if (i == 0)
579 sc->sc_nbssid0++;
580 }
581
582 static void
reclaim_address(struct mwl_softc * sc,const uint8_t mac[IEEE80211_ADDR_LEN])583 reclaim_address(struct mwl_softc *sc, const uint8_t mac[IEEE80211_ADDR_LEN])
584 {
585 int i = mac[0] >> 2;
586 if (i != 0 || --sc->sc_nbssid0 == 0)
587 sc->sc_bssidmask &= ~(1<<i);
588 }
589
590 static struct ieee80211vap *
mwl_vap_create(struct ieee80211com * ic,const char name[IFNAMSIZ],int unit,enum ieee80211_opmode opmode,int flags,const uint8_t bssid[IEEE80211_ADDR_LEN],const uint8_t mac0[IEEE80211_ADDR_LEN])591 mwl_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
592 enum ieee80211_opmode opmode, int flags,
593 const uint8_t bssid[IEEE80211_ADDR_LEN],
594 const uint8_t mac0[IEEE80211_ADDR_LEN])
595 {
596 struct mwl_softc *sc = ic->ic_softc;
597 struct mwl_hal *mh = sc->sc_mh;
598 struct ieee80211vap *vap, *apvap;
599 struct mwl_hal_vap *hvap;
600 struct mwl_vap *mvp;
601 uint8_t mac[IEEE80211_ADDR_LEN];
602
603 IEEE80211_ADDR_COPY(mac, mac0);
604 switch (opmode) {
605 case IEEE80211_M_HOSTAP:
606 case IEEE80211_M_MBSS:
607 if ((flags & IEEE80211_CLONE_MACADDR) == 0)
608 assign_address(sc, mac, flags & IEEE80211_CLONE_BSSID);
609 hvap = mwl_hal_newvap(mh, MWL_HAL_AP, mac);
610 if (hvap == NULL) {
611 if ((flags & IEEE80211_CLONE_MACADDR) == 0)
612 reclaim_address(sc, mac);
613 return NULL;
614 }
615 break;
616 case IEEE80211_M_STA:
617 if ((flags & IEEE80211_CLONE_MACADDR) == 0)
618 assign_address(sc, mac, flags & IEEE80211_CLONE_BSSID);
619 hvap = mwl_hal_newvap(mh, MWL_HAL_STA, mac);
620 if (hvap == NULL) {
621 if ((flags & IEEE80211_CLONE_MACADDR) == 0)
622 reclaim_address(sc, mac);
623 return NULL;
624 }
625 /* no h/w beacon miss support; always use s/w */
626 flags |= IEEE80211_CLONE_NOBEACONS;
627 break;
628 case IEEE80211_M_WDS:
629 hvap = NULL; /* NB: we use associated AP vap */
630 if (sc->sc_napvaps == 0)
631 return NULL; /* no existing AP vap */
632 break;
633 case IEEE80211_M_MONITOR:
634 hvap = NULL;
635 break;
636 case IEEE80211_M_IBSS:
637 case IEEE80211_M_AHDEMO:
638 default:
639 return NULL;
640 }
641
642 mvp = malloc(sizeof(struct mwl_vap), M_80211_VAP, M_WAITOK | M_ZERO);
643 mvp->mv_hvap = hvap;
644 if (opmode == IEEE80211_M_WDS) {
645 /*
646 * WDS vaps must have an associated AP vap; find one.
647 * XXX not right.
648 */
649 TAILQ_FOREACH(apvap, &ic->ic_vaps, iv_next)
650 if (apvap->iv_opmode == IEEE80211_M_HOSTAP) {
651 mvp->mv_ap_hvap = MWL_VAP(apvap)->mv_hvap;
652 break;
653 }
654 KASSERT(mvp->mv_ap_hvap != NULL, ("no ap vap"));
655 }
656 vap = &mvp->mv_vap;
657 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
658 /* override with driver methods */
659 mvp->mv_newstate = vap->iv_newstate;
660 vap->iv_newstate = mwl_newstate;
661 vap->iv_max_keyix = 0; /* XXX */
662 vap->iv_key_alloc = mwl_key_alloc;
663 vap->iv_key_delete = mwl_key_delete;
664 vap->iv_key_set = mwl_key_set;
665 #ifdef MWL_HOST_PS_SUPPORT
666 if (opmode == IEEE80211_M_HOSTAP || opmode == IEEE80211_M_MBSS) {
667 vap->iv_update_ps = mwl_update_ps;
668 mvp->mv_set_tim = vap->iv_set_tim;
669 vap->iv_set_tim = mwl_set_tim;
670 }
671 #endif
672 vap->iv_reset = mwl_reset;
673 vap->iv_update_beacon = mwl_beacon_update;
674
675 /* override max aid so sta's cannot assoc when we're out of sta id's */
676 vap->iv_max_aid = MWL_MAXSTAID;
677 /* override default A-MPDU rx parameters */
678 vap->iv_ampdu_rxmax = IEEE80211_HTCAP_MAXRXAMPDU_64K;
679 vap->iv_ampdu_density = IEEE80211_HTCAP_MPDUDENSITY_4;
680
681 /* complete setup */
682 ieee80211_vap_attach(vap, mwl_media_change, ieee80211_media_status,
683 mac);
684
685 switch (vap->iv_opmode) {
686 case IEEE80211_M_HOSTAP:
687 case IEEE80211_M_MBSS:
688 case IEEE80211_M_STA:
689 /*
690 * Setup sta db entry for local address.
691 */
692 mwl_localstadb(vap);
693 if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
694 vap->iv_opmode == IEEE80211_M_MBSS)
695 sc->sc_napvaps++;
696 else
697 sc->sc_nstavaps++;
698 break;
699 case IEEE80211_M_WDS:
700 sc->sc_nwdsvaps++;
701 break;
702 default:
703 break;
704 }
705 /*
706 * Setup overall operating mode.
707 */
708 if (sc->sc_napvaps)
709 ic->ic_opmode = IEEE80211_M_HOSTAP;
710 else if (sc->sc_nstavaps)
711 ic->ic_opmode = IEEE80211_M_STA;
712 else
713 ic->ic_opmode = opmode;
714
715 return vap;
716 }
717
718 static void
mwl_vap_delete(struct ieee80211vap * vap)719 mwl_vap_delete(struct ieee80211vap *vap)
720 {
721 struct mwl_vap *mvp = MWL_VAP(vap);
722 struct mwl_softc *sc = vap->iv_ic->ic_softc;
723 struct mwl_hal *mh = sc->sc_mh;
724 struct mwl_hal_vap *hvap = mvp->mv_hvap;
725 enum ieee80211_opmode opmode = vap->iv_opmode;
726
727 /* XXX disallow ap vap delete if WDS still present */
728 if (sc->sc_running) {
729 /* quiesce h/w while we remove the vap */
730 mwl_hal_intrset(mh, 0); /* disable interrupts */
731 }
732 ieee80211_vap_detach(vap);
733 switch (opmode) {
734 case IEEE80211_M_HOSTAP:
735 case IEEE80211_M_MBSS:
736 case IEEE80211_M_STA:
737 KASSERT(hvap != NULL, ("no hal vap handle"));
738 (void) mwl_hal_delstation(hvap, vap->iv_myaddr);
739 mwl_hal_delvap(hvap);
740 if (opmode == IEEE80211_M_HOSTAP || opmode == IEEE80211_M_MBSS)
741 sc->sc_napvaps--;
742 else
743 sc->sc_nstavaps--;
744 /* XXX don't do it for IEEE80211_CLONE_MACADDR */
745 reclaim_address(sc, vap->iv_myaddr);
746 break;
747 case IEEE80211_M_WDS:
748 sc->sc_nwdsvaps--;
749 break;
750 default:
751 break;
752 }
753 mwl_cleartxq(sc, vap);
754 free(mvp, M_80211_VAP);
755 if (sc->sc_running)
756 mwl_hal_intrset(mh, sc->sc_imask);
757 }
758
759 void
mwl_suspend(struct mwl_softc * sc)760 mwl_suspend(struct mwl_softc *sc)
761 {
762
763 MWL_LOCK(sc);
764 mwl_stop(sc);
765 MWL_UNLOCK(sc);
766 }
767
768 void
mwl_resume(struct mwl_softc * sc)769 mwl_resume(struct mwl_softc *sc)
770 {
771 int error = EDOOFUS;
772
773 MWL_LOCK(sc);
774 if (sc->sc_ic.ic_nrunning > 0)
775 error = mwl_init(sc);
776 MWL_UNLOCK(sc);
777
778 if (error == 0)
779 ieee80211_start_all(&sc->sc_ic); /* start all vap's */
780 }
781
782 void
mwl_shutdown(void * arg)783 mwl_shutdown(void *arg)
784 {
785 struct mwl_softc *sc = arg;
786
787 MWL_LOCK(sc);
788 mwl_stop(sc);
789 MWL_UNLOCK(sc);
790 }
791
792 /*
793 * Interrupt handler. Most of the actual processing is deferred.
794 */
795 void
mwl_intr(void * arg)796 mwl_intr(void *arg)
797 {
798 struct mwl_softc *sc = arg;
799 struct mwl_hal *mh = sc->sc_mh;
800 uint32_t status;
801
802 if (sc->sc_invalid) {
803 /*
804 * The hardware is not ready/present, don't touch anything.
805 * Note this can happen early on if the IRQ is shared.
806 */
807 DPRINTF(sc, MWL_DEBUG_ANY, "%s: invalid; ignored\n", __func__);
808 return;
809 }
810 /*
811 * Figure out the reason(s) for the interrupt.
812 */
813 mwl_hal_getisr(mh, &status); /* NB: clears ISR too */
814 if (status == 0) /* must be a shared irq */
815 return;
816
817 DPRINTF(sc, MWL_DEBUG_INTR, "%s: status 0x%x imask 0x%x\n",
818 __func__, status, sc->sc_imask);
819 if (status & MACREG_A2HRIC_BIT_RX_RDY)
820 taskqueue_enqueue(sc->sc_tq, &sc->sc_rxtask);
821 if (status & MACREG_A2HRIC_BIT_TX_DONE)
822 taskqueue_enqueue(sc->sc_tq, &sc->sc_txtask);
823 if (status & MACREG_A2HRIC_BIT_BA_WATCHDOG)
824 taskqueue_enqueue(sc->sc_tq, &sc->sc_bawatchdogtask);
825 if (status & MACREG_A2HRIC_BIT_OPC_DONE)
826 mwl_hal_cmddone(mh);
827 if (status & MACREG_A2HRIC_BIT_MAC_EVENT) {
828 ;
829 }
830 if (status & MACREG_A2HRIC_BIT_ICV_ERROR) {
831 /* TKIP ICV error */
832 sc->sc_stats.mst_rx_badtkipicv++;
833 }
834 if (status & MACREG_A2HRIC_BIT_QUEUE_EMPTY) {
835 /* 11n aggregation queue is empty, re-fill */
836 ;
837 }
838 if (status & MACREG_A2HRIC_BIT_QUEUE_FULL) {
839 ;
840 }
841 if (status & MACREG_A2HRIC_BIT_RADAR_DETECT) {
842 /* radar detected, process event */
843 taskqueue_enqueue(sc->sc_tq, &sc->sc_radartask);
844 }
845 if (status & MACREG_A2HRIC_BIT_CHAN_SWITCH) {
846 /* DFS channel switch */
847 taskqueue_enqueue(sc->sc_tq, &sc->sc_chanswitchtask);
848 }
849 }
850
851 static void
mwl_radar_proc(void * arg,int pending)852 mwl_radar_proc(void *arg, int pending)
853 {
854 struct mwl_softc *sc = arg;
855 struct ieee80211com *ic = &sc->sc_ic;
856
857 DPRINTF(sc, MWL_DEBUG_ANY, "%s: radar detected, pending %u\n",
858 __func__, pending);
859
860 sc->sc_stats.mst_radardetect++;
861 /* XXX stop h/w BA streams? */
862
863 IEEE80211_LOCK(ic);
864 ieee80211_dfs_notify_radar(ic, ic->ic_curchan);
865 IEEE80211_UNLOCK(ic);
866 }
867
868 static void
mwl_chanswitch_proc(void * arg,int pending)869 mwl_chanswitch_proc(void *arg, int pending)
870 {
871 struct mwl_softc *sc = arg;
872 struct ieee80211com *ic = &sc->sc_ic;
873
874 DPRINTF(sc, MWL_DEBUG_ANY, "%s: channel switch notice, pending %u\n",
875 __func__, pending);
876
877 IEEE80211_LOCK(ic);
878 sc->sc_csapending = 0;
879 ieee80211_csa_completeswitch(ic);
880 IEEE80211_UNLOCK(ic);
881 }
882
883 static void
mwl_bawatchdog(const MWL_HAL_BASTREAM * sp)884 mwl_bawatchdog(const MWL_HAL_BASTREAM *sp)
885 {
886 struct ieee80211_node *ni = sp->data[0];
887
888 /* send DELBA and drop the stream */
889 ieee80211_ampdu_stop(ni, sp->data[1], IEEE80211_REASON_UNSPECIFIED);
890 }
891
892 static void
mwl_bawatchdog_proc(void * arg,int pending)893 mwl_bawatchdog_proc(void *arg, int pending)
894 {
895 struct mwl_softc *sc = arg;
896 struct mwl_hal *mh = sc->sc_mh;
897 const MWL_HAL_BASTREAM *sp;
898 uint8_t bitmap, n;
899
900 sc->sc_stats.mst_bawatchdog++;
901
902 if (mwl_hal_getwatchdogbitmap(mh, &bitmap) != 0) {
903 DPRINTF(sc, MWL_DEBUG_AMPDU,
904 "%s: could not get bitmap\n", __func__);
905 sc->sc_stats.mst_bawatchdog_failed++;
906 return;
907 }
908 DPRINTF(sc, MWL_DEBUG_AMPDU, "%s: bitmap 0x%x\n", __func__, bitmap);
909 if (bitmap == 0xff) {
910 n = 0;
911 /* disable all ba streams */
912 for (bitmap = 0; bitmap < 8; bitmap++) {
913 sp = mwl_hal_bastream_lookup(mh, bitmap);
914 if (sp != NULL) {
915 mwl_bawatchdog(sp);
916 n++;
917 }
918 }
919 if (n == 0) {
920 DPRINTF(sc, MWL_DEBUG_AMPDU,
921 "%s: no BA streams found\n", __func__);
922 sc->sc_stats.mst_bawatchdog_empty++;
923 }
924 } else if (bitmap != 0xaa) {
925 /* disable a single ba stream */
926 sp = mwl_hal_bastream_lookup(mh, bitmap);
927 if (sp != NULL) {
928 mwl_bawatchdog(sp);
929 } else {
930 DPRINTF(sc, MWL_DEBUG_AMPDU,
931 "%s: no BA stream %d\n", __func__, bitmap);
932 sc->sc_stats.mst_bawatchdog_notfound++;
933 }
934 }
935 }
936
937 /*
938 * Convert net80211 channel to a HAL channel.
939 */
940 static void
mwl_mapchan(MWL_HAL_CHANNEL * hc,const struct ieee80211_channel * chan)941 mwl_mapchan(MWL_HAL_CHANNEL *hc, const struct ieee80211_channel *chan)
942 {
943 hc->channel = chan->ic_ieee;
944
945 *(uint32_t *)&hc->channelFlags = 0;
946 if (IEEE80211_IS_CHAN_2GHZ(chan))
947 hc->channelFlags.FreqBand = MWL_FREQ_BAND_2DOT4GHZ;
948 else if (IEEE80211_IS_CHAN_5GHZ(chan))
949 hc->channelFlags.FreqBand = MWL_FREQ_BAND_5GHZ;
950 if (IEEE80211_IS_CHAN_HT40(chan)) {
951 hc->channelFlags.ChnlWidth = MWL_CH_40_MHz_WIDTH;
952 if (IEEE80211_IS_CHAN_HT40U(chan))
953 hc->channelFlags.ExtChnlOffset = MWL_EXT_CH_ABOVE_CTRL_CH;
954 else
955 hc->channelFlags.ExtChnlOffset = MWL_EXT_CH_BELOW_CTRL_CH;
956 } else
957 hc->channelFlags.ChnlWidth = MWL_CH_20_MHz_WIDTH;
958 /* XXX 10MHz channels */
959 }
960
961 /*
962 * Inform firmware of our tx/rx dma setup. The BAR 0
963 * writes below are for compatibility with older firmware.
964 * For current firmware we send this information with a
965 * cmd block via mwl_hal_sethwdma.
966 */
967 static int
mwl_setupdma(struct mwl_softc * sc)968 mwl_setupdma(struct mwl_softc *sc)
969 {
970 int error, i;
971
972 sc->sc_hwdma.rxDescRead = sc->sc_rxdma.dd_desc_paddr;
973 WR4(sc, sc->sc_hwspecs.rxDescRead, sc->sc_hwdma.rxDescRead);
974 WR4(sc, sc->sc_hwspecs.rxDescWrite, sc->sc_hwdma.rxDescRead);
975
976 for (i = 0; i < MWL_NUM_TX_QUEUES-MWL_NUM_ACK_QUEUES; i++) {
977 struct mwl_txq *txq = &sc->sc_txq[i];
978 sc->sc_hwdma.wcbBase[i] = txq->dma.dd_desc_paddr;
979 WR4(sc, sc->sc_hwspecs.wcbBase[i], sc->sc_hwdma.wcbBase[i]);
980 }
981 sc->sc_hwdma.maxNumTxWcb = mwl_txbuf;
982 sc->sc_hwdma.maxNumWCB = MWL_NUM_TX_QUEUES-MWL_NUM_ACK_QUEUES;
983
984 error = mwl_hal_sethwdma(sc->sc_mh, &sc->sc_hwdma);
985 if (error != 0) {
986 device_printf(sc->sc_dev,
987 "unable to setup tx/rx dma; hal status %u\n", error);
988 /* XXX */
989 }
990 return error;
991 }
992
993 /*
994 * Inform firmware of tx rate parameters.
995 * Called after a channel change.
996 */
997 static int
mwl_setcurchanrates(struct mwl_softc * sc)998 mwl_setcurchanrates(struct mwl_softc *sc)
999 {
1000 struct ieee80211com *ic = &sc->sc_ic;
1001 const struct ieee80211_rateset *rs;
1002 MWL_HAL_TXRATE rates;
1003
1004 memset(&rates, 0, sizeof(rates));
1005 rs = ieee80211_get_suprates(ic, ic->ic_curchan);
1006 /* rate used to send management frames */
1007 rates.MgtRate = rs->rs_rates[0] & IEEE80211_RATE_VAL;
1008 /* rate used to send multicast frames */
1009 rates.McastRate = rates.MgtRate;
1010
1011 return mwl_hal_settxrate_auto(sc->sc_mh, &rates);
1012 }
1013
1014 /*
1015 * Inform firmware of tx rate parameters. Called whenever
1016 * user-settable params change and after a channel change.
1017 */
1018 static int
mwl_setrates(struct ieee80211vap * vap)1019 mwl_setrates(struct ieee80211vap *vap)
1020 {
1021 struct mwl_vap *mvp = MWL_VAP(vap);
1022 struct ieee80211_node *ni = vap->iv_bss;
1023 const struct ieee80211_txparam *tp = ni->ni_txparms;
1024 MWL_HAL_TXRATE rates;
1025
1026 KASSERT(vap->iv_state == IEEE80211_S_RUN, ("state %d", vap->iv_state));
1027
1028 /*
1029 * Update the h/w rate map.
1030 * NB: 0x80 for MCS is passed through unchanged
1031 */
1032 memset(&rates, 0, sizeof(rates));
1033 /* rate used to send management frames */
1034 rates.MgtRate = tp->mgmtrate;
1035 /* rate used to send multicast frames */
1036 rates.McastRate = tp->mcastrate;
1037
1038 /* while here calculate EAPOL fixed rate cookie */
1039 mvp->mv_eapolformat = htole16(mwl_calcformat(rates.MgtRate, ni));
1040
1041 return mwl_hal_settxrate(mvp->mv_hvap,
1042 tp->ucastrate != IEEE80211_FIXED_RATE_NONE ?
1043 RATE_FIXED : RATE_AUTO, &rates);
1044 }
1045
1046 /*
1047 * Setup a fixed xmit rate cookie for EAPOL frames.
1048 */
1049 static void
mwl_seteapolformat(struct ieee80211vap * vap)1050 mwl_seteapolformat(struct ieee80211vap *vap)
1051 {
1052 struct mwl_vap *mvp = MWL_VAP(vap);
1053 struct ieee80211_node *ni = vap->iv_bss;
1054 enum ieee80211_phymode mode;
1055 uint8_t rate;
1056
1057 KASSERT(vap->iv_state == IEEE80211_S_RUN, ("state %d", vap->iv_state));
1058
1059 mode = ieee80211_chan2mode(ni->ni_chan);
1060 /*
1061 * Use legacy rates when operating a mixed HT+non-HT bss.
1062 * NB: this may violate POLA for sta and wds vap's.
1063 */
1064 if (mode == IEEE80211_MODE_11NA &&
1065 (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0)
1066 rate = vap->iv_txparms[IEEE80211_MODE_11A].mgmtrate;
1067 else if (mode == IEEE80211_MODE_11NG &&
1068 (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0)
1069 rate = vap->iv_txparms[IEEE80211_MODE_11G].mgmtrate;
1070 else
1071 rate = vap->iv_txparms[mode].mgmtrate;
1072
1073 mvp->mv_eapolformat = htole16(mwl_calcformat(rate, ni));
1074 }
1075
1076 /*
1077 * Map SKU+country code to region code for radar bin'ing.
1078 */
1079 static int
mwl_map2regioncode(const struct ieee80211_regdomain * rd)1080 mwl_map2regioncode(const struct ieee80211_regdomain *rd)
1081 {
1082 switch (rd->regdomain) {
1083 case SKU_FCC:
1084 case SKU_FCC3:
1085 return DOMAIN_CODE_FCC;
1086 case SKU_CA:
1087 return DOMAIN_CODE_IC;
1088 case SKU_ETSI:
1089 case SKU_ETSI2:
1090 case SKU_ETSI3:
1091 if (rd->country == CTRY_SPAIN)
1092 return DOMAIN_CODE_SPAIN;
1093 if (rd->country == CTRY_FRANCE || rd->country == CTRY_FRANCE2)
1094 return DOMAIN_CODE_FRANCE;
1095 /* XXX force 1.3.1 radar type */
1096 return DOMAIN_CODE_ETSI_131;
1097 case SKU_JAPAN:
1098 return DOMAIN_CODE_MKK;
1099 case SKU_ROW:
1100 return DOMAIN_CODE_DGT; /* Taiwan */
1101 case SKU_APAC:
1102 case SKU_APAC2:
1103 case SKU_APAC3:
1104 return DOMAIN_CODE_AUS; /* Australia */
1105 }
1106 /* XXX KOREA? */
1107 return DOMAIN_CODE_FCC; /* XXX? */
1108 }
1109
1110 static int
mwl_hal_reset(struct mwl_softc * sc)1111 mwl_hal_reset(struct mwl_softc *sc)
1112 {
1113 struct ieee80211com *ic = &sc->sc_ic;
1114 struct mwl_hal *mh = sc->sc_mh;
1115
1116 mwl_hal_setantenna(mh, WL_ANTENNATYPE_RX, sc->sc_rxantenna);
1117 mwl_hal_setantenna(mh, WL_ANTENNATYPE_TX, sc->sc_txantenna);
1118 mwl_hal_setradio(mh, 1, WL_AUTO_PREAMBLE);
1119 mwl_hal_setwmm(sc->sc_mh, (ic->ic_flags & IEEE80211_F_WME) != 0);
1120 mwl_chan_set(sc, ic->ic_curchan);
1121 /* NB: RF/RA performance tuned for indoor mode */
1122 mwl_hal_setrateadaptmode(mh, 0);
1123 mwl_hal_setoptimizationlevel(mh,
1124 (ic->ic_flags & IEEE80211_F_BURST) != 0);
1125
1126 mwl_hal_setregioncode(mh, mwl_map2regioncode(&ic->ic_regdomain));
1127
1128 mwl_hal_setaggampduratemode(mh, 1, 80); /* XXX */
1129 mwl_hal_setcfend(mh, 0); /* XXX */
1130
1131 return 1;
1132 }
1133
1134 static int
mwl_init(struct mwl_softc * sc)1135 mwl_init(struct mwl_softc *sc)
1136 {
1137 struct mwl_hal *mh = sc->sc_mh;
1138 int error = 0;
1139
1140 MWL_LOCK_ASSERT(sc);
1141
1142 /*
1143 * Stop anything previously setup. This is safe
1144 * whether this is the first time through or not.
1145 */
1146 mwl_stop(sc);
1147
1148 /*
1149 * Push vap-independent state to the firmware.
1150 */
1151 if (!mwl_hal_reset(sc)) {
1152 device_printf(sc->sc_dev, "unable to reset hardware\n");
1153 return EIO;
1154 }
1155
1156 /*
1157 * Setup recv (once); transmit is already good to go.
1158 */
1159 error = mwl_startrecv(sc);
1160 if (error != 0) {
1161 device_printf(sc->sc_dev, "unable to start recv logic\n");
1162 return error;
1163 }
1164
1165 /*
1166 * Enable interrupts.
1167 */
1168 sc->sc_imask = MACREG_A2HRIC_BIT_RX_RDY
1169 | MACREG_A2HRIC_BIT_TX_DONE
1170 | MACREG_A2HRIC_BIT_OPC_DONE
1171 #if 0
1172 | MACREG_A2HRIC_BIT_MAC_EVENT
1173 #endif
1174 | MACREG_A2HRIC_BIT_ICV_ERROR
1175 | MACREG_A2HRIC_BIT_RADAR_DETECT
1176 | MACREG_A2HRIC_BIT_CHAN_SWITCH
1177 #if 0
1178 | MACREG_A2HRIC_BIT_QUEUE_EMPTY
1179 #endif
1180 | MACREG_A2HRIC_BIT_BA_WATCHDOG
1181 | MACREQ_A2HRIC_BIT_TX_ACK
1182 ;
1183
1184 sc->sc_running = 1;
1185 mwl_hal_intrset(mh, sc->sc_imask);
1186 callout_reset(&sc->sc_watchdog, hz, mwl_watchdog, sc);
1187
1188 return 0;
1189 }
1190
1191 static void
mwl_stop(struct mwl_softc * sc)1192 mwl_stop(struct mwl_softc *sc)
1193 {
1194
1195 MWL_LOCK_ASSERT(sc);
1196 if (sc->sc_running) {
1197 /*
1198 * Shutdown the hardware and driver.
1199 */
1200 sc->sc_running = 0;
1201 callout_stop(&sc->sc_watchdog);
1202 sc->sc_tx_timer = 0;
1203 mwl_draintxq(sc);
1204 }
1205 }
1206
1207 static int
mwl_reset_vap(struct ieee80211vap * vap,int state)1208 mwl_reset_vap(struct ieee80211vap *vap, int state)
1209 {
1210 struct mwl_hal_vap *hvap = MWL_VAP(vap)->mv_hvap;
1211 struct ieee80211com *ic = vap->iv_ic;
1212
1213 if (state == IEEE80211_S_RUN)
1214 mwl_setrates(vap);
1215 /* XXX off by 1? */
1216 mwl_hal_setrtsthreshold(hvap, vap->iv_rtsthreshold);
1217 /* XXX auto? 20/40 split? */
1218 mwl_hal_sethtgi(hvap, (vap->iv_flags_ht &
1219 (IEEE80211_FHT_SHORTGI20|IEEE80211_FHT_SHORTGI40)) ? 1 : 0);
1220 mwl_hal_setnprot(hvap, ic->ic_htprotmode == IEEE80211_PROT_NONE ?
1221 HTPROTECT_NONE : HTPROTECT_AUTO);
1222 /* XXX txpower cap */
1223
1224 /* re-setup beacons */
1225 if (state == IEEE80211_S_RUN &&
1226 (vap->iv_opmode == IEEE80211_M_HOSTAP ||
1227 vap->iv_opmode == IEEE80211_M_MBSS ||
1228 vap->iv_opmode == IEEE80211_M_IBSS)) {
1229 mwl_setapmode(vap, vap->iv_bss->ni_chan);
1230 mwl_hal_setnprotmode(hvap, _IEEE80211_MASKSHIFT(
1231 ic->ic_curhtprotmode, IEEE80211_HTINFO_OPMODE));
1232 return mwl_beacon_setup(vap);
1233 }
1234 return 0;
1235 }
1236
1237 /*
1238 * Reset the hardware w/o losing operational state.
1239 * Used to reset or reload hardware state for a vap.
1240 */
1241 static int
mwl_reset(struct ieee80211vap * vap,u_long cmd)1242 mwl_reset(struct ieee80211vap *vap, u_long cmd)
1243 {
1244 struct mwl_hal_vap *hvap = MWL_VAP(vap)->mv_hvap;
1245 int error = 0;
1246
1247 if (hvap != NULL) { /* WDS, MONITOR, etc. */
1248 struct ieee80211com *ic = vap->iv_ic;
1249 struct mwl_softc *sc = ic->ic_softc;
1250 struct mwl_hal *mh = sc->sc_mh;
1251
1252 /* XXX handle DWDS sta vap change */
1253 /* XXX do we need to disable interrupts? */
1254 mwl_hal_intrset(mh, 0); /* disable interrupts */
1255 error = mwl_reset_vap(vap, vap->iv_state);
1256 mwl_hal_intrset(mh, sc->sc_imask);
1257 }
1258 return error;
1259 }
1260
1261 /*
1262 * Allocate a tx buffer for sending a frame. The
1263 * packet is assumed to have the WME AC stored so
1264 * we can use it to select the appropriate h/w queue.
1265 */
1266 static struct mwl_txbuf *
mwl_gettxbuf(struct mwl_softc * sc,struct mwl_txq * txq)1267 mwl_gettxbuf(struct mwl_softc *sc, struct mwl_txq *txq)
1268 {
1269 struct mwl_txbuf *bf;
1270
1271 /*
1272 * Grab a TX buffer and associated resources.
1273 */
1274 MWL_TXQ_LOCK(txq);
1275 bf = STAILQ_FIRST(&txq->free);
1276 if (bf != NULL) {
1277 STAILQ_REMOVE_HEAD(&txq->free, bf_list);
1278 txq->nfree--;
1279 }
1280 MWL_TXQ_UNLOCK(txq);
1281 if (bf == NULL)
1282 DPRINTF(sc, MWL_DEBUG_XMIT,
1283 "%s: out of xmit buffers on q %d\n", __func__, txq->qnum);
1284 return bf;
1285 }
1286
1287 /*
1288 * Return a tx buffer to the queue it came from. Note there
1289 * are two cases because we must preserve the order of buffers
1290 * as it reflects the fixed order of descriptors in memory
1291 * (the firmware pre-fetches descriptors so we cannot reorder).
1292 */
1293 static void
mwl_puttxbuf_head(struct mwl_txq * txq,struct mwl_txbuf * bf)1294 mwl_puttxbuf_head(struct mwl_txq *txq, struct mwl_txbuf *bf)
1295 {
1296 bf->bf_m = NULL;
1297 bf->bf_node = NULL;
1298 MWL_TXQ_LOCK(txq);
1299 STAILQ_INSERT_HEAD(&txq->free, bf, bf_list);
1300 txq->nfree++;
1301 MWL_TXQ_UNLOCK(txq);
1302 }
1303
1304 static void
mwl_puttxbuf_tail(struct mwl_txq * txq,struct mwl_txbuf * bf)1305 mwl_puttxbuf_tail(struct mwl_txq *txq, struct mwl_txbuf *bf)
1306 {
1307 bf->bf_m = NULL;
1308 bf->bf_node = NULL;
1309 MWL_TXQ_LOCK(txq);
1310 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list);
1311 txq->nfree++;
1312 MWL_TXQ_UNLOCK(txq);
1313 }
1314
1315 static int
mwl_transmit(struct ieee80211com * ic,struct mbuf * m)1316 mwl_transmit(struct ieee80211com *ic, struct mbuf *m)
1317 {
1318 struct mwl_softc *sc = ic->ic_softc;
1319 int error;
1320
1321 MWL_LOCK(sc);
1322 if (!sc->sc_running) {
1323 MWL_UNLOCK(sc);
1324 return (ENXIO);
1325 }
1326 error = mbufq_enqueue(&sc->sc_snd, m);
1327 if (error) {
1328 MWL_UNLOCK(sc);
1329 return (error);
1330 }
1331 mwl_start(sc);
1332 MWL_UNLOCK(sc);
1333 return (0);
1334 }
1335
1336 static void
mwl_start(struct mwl_softc * sc)1337 mwl_start(struct mwl_softc *sc)
1338 {
1339 struct ieee80211_node *ni;
1340 struct mwl_txbuf *bf;
1341 struct mbuf *m;
1342 struct mwl_txq *txq = NULL; /* XXX silence gcc */
1343 int nqueued;
1344
1345 MWL_LOCK_ASSERT(sc);
1346 if (!sc->sc_running || sc->sc_invalid)
1347 return;
1348 nqueued = 0;
1349 while ((m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
1350 /*
1351 * Grab the node for the destination.
1352 */
1353 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1354 KASSERT(ni != NULL, ("no node"));
1355 m->m_pkthdr.rcvif = NULL; /* committed, clear ref */
1356 /*
1357 * Grab a TX buffer and associated resources.
1358 * We honor the classification by the 802.11 layer.
1359 */
1360 txq = sc->sc_ac2q[M_WME_GETAC(m)];
1361 bf = mwl_gettxbuf(sc, txq);
1362 if (bf == NULL) {
1363 m_freem(m);
1364 ieee80211_free_node(ni);
1365 #ifdef MWL_TX_NODROP
1366 sc->sc_stats.mst_tx_qstop++;
1367 break;
1368 #else
1369 DPRINTF(sc, MWL_DEBUG_XMIT,
1370 "%s: tail drop on q %d\n", __func__, txq->qnum);
1371 sc->sc_stats.mst_tx_qdrop++;
1372 continue;
1373 #endif /* MWL_TX_NODROP */
1374 }
1375
1376 /*
1377 * Pass the frame to the h/w for transmission.
1378 */
1379 if (mwl_tx_start(sc, ni, bf, m)) {
1380 if_inc_counter(ni->ni_vap->iv_ifp,
1381 IFCOUNTER_OERRORS, 1);
1382 mwl_puttxbuf_head(txq, bf);
1383 ieee80211_free_node(ni);
1384 continue;
1385 }
1386 nqueued++;
1387 if (nqueued >= mwl_txcoalesce) {
1388 /*
1389 * Poke the firmware to process queued frames;
1390 * see below about (lack of) locking.
1391 */
1392 nqueued = 0;
1393 mwl_hal_txstart(sc->sc_mh, 0/*XXX*/);
1394 }
1395 }
1396 if (nqueued) {
1397 /*
1398 * NB: We don't need to lock against tx done because
1399 * this just prods the firmware to check the transmit
1400 * descriptors. The firmware will also start fetching
1401 * descriptors by itself if it notices new ones are
1402 * present when it goes to deliver a tx done interrupt
1403 * to the host. So if we race with tx done processing
1404 * it's ok. Delivering the kick here rather than in
1405 * mwl_tx_start is an optimization to avoid poking the
1406 * firmware for each packet.
1407 *
1408 * NB: the queue id isn't used so 0 is ok.
1409 */
1410 mwl_hal_txstart(sc->sc_mh, 0/*XXX*/);
1411 }
1412 }
1413
1414 static int
mwl_raw_xmit(struct ieee80211_node * ni,struct mbuf * m,const struct ieee80211_bpf_params * params)1415 mwl_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1416 const struct ieee80211_bpf_params *params)
1417 {
1418 struct ieee80211com *ic = ni->ni_ic;
1419 struct mwl_softc *sc = ic->ic_softc;
1420 struct mwl_txbuf *bf;
1421 struct mwl_txq *txq;
1422
1423 if (!sc->sc_running || sc->sc_invalid) {
1424 m_freem(m);
1425 return ENETDOWN;
1426 }
1427 /*
1428 * Grab a TX buffer and associated resources.
1429 * Note that we depend on the classification
1430 * by the 802.11 layer to get to the right h/w
1431 * queue. Management frames must ALWAYS go on
1432 * queue 1 but we cannot just force that here
1433 * because we may receive non-mgt frames.
1434 */
1435 txq = sc->sc_ac2q[M_WME_GETAC(m)];
1436 bf = mwl_gettxbuf(sc, txq);
1437 if (bf == NULL) {
1438 sc->sc_stats.mst_tx_qstop++;
1439 m_freem(m);
1440 return ENOBUFS;
1441 }
1442 /*
1443 * Pass the frame to the h/w for transmission.
1444 */
1445 if (mwl_tx_start(sc, ni, bf, m)) {
1446 mwl_puttxbuf_head(txq, bf);
1447
1448 return EIO; /* XXX */
1449 }
1450 /*
1451 * NB: We don't need to lock against tx done because
1452 * this just prods the firmware to check the transmit
1453 * descriptors. The firmware will also start fetching
1454 * descriptors by itself if it notices new ones are
1455 * present when it goes to deliver a tx done interrupt
1456 * to the host. So if we race with tx done processing
1457 * it's ok. Delivering the kick here rather than in
1458 * mwl_tx_start is an optimization to avoid poking the
1459 * firmware for each packet.
1460 *
1461 * NB: the queue id isn't used so 0 is ok.
1462 */
1463 mwl_hal_txstart(sc->sc_mh, 0/*XXX*/);
1464 return 0;
1465 }
1466
1467 static int
mwl_media_change(struct ifnet * ifp)1468 mwl_media_change(struct ifnet *ifp)
1469 {
1470 struct ieee80211vap *vap;
1471 int error;
1472
1473 /* NB: only the fixed rate can change and that doesn't need a reset */
1474 error = ieee80211_media_change(ifp);
1475 if (error != 0)
1476 return (error);
1477
1478 vap = ifp->if_softc;
1479 mwl_setrates(vap);
1480 return (0);
1481 }
1482
1483 #ifdef MWL_DEBUG
1484 static void
mwl_keyprint(struct mwl_softc * sc,const char * tag,const MWL_HAL_KEYVAL * hk,const uint8_t mac[IEEE80211_ADDR_LEN])1485 mwl_keyprint(struct mwl_softc *sc, const char *tag,
1486 const MWL_HAL_KEYVAL *hk, const uint8_t mac[IEEE80211_ADDR_LEN])
1487 {
1488 static const char *ciphers[] = {
1489 "WEP",
1490 "TKIP",
1491 "AES-CCM",
1492 };
1493 int i, n;
1494
1495 printf("%s: [%u] %-7s", tag, hk->keyIndex, ciphers[hk->keyTypeId]);
1496 for (i = 0, n = hk->keyLen; i < n; i++)
1497 printf(" %02x", hk->key.aes[i]);
1498 printf(" mac %s", ether_sprintf(mac));
1499 if (hk->keyTypeId == KEY_TYPE_ID_TKIP) {
1500 printf(" %s", "rxmic");
1501 for (i = 0; i < sizeof(hk->key.tkip.rxMic); i++)
1502 printf(" %02x", hk->key.tkip.rxMic[i]);
1503 printf(" txmic");
1504 for (i = 0; i < sizeof(hk->key.tkip.txMic); i++)
1505 printf(" %02x", hk->key.tkip.txMic[i]);
1506 }
1507 printf(" flags 0x%x\n", hk->keyFlags);
1508 }
1509 #endif
1510
1511 /*
1512 * Allocate a key cache slot for a unicast key. The
1513 * firmware handles key allocation and every station is
1514 * guaranteed key space so we are always successful.
1515 */
1516 static int
mwl_key_alloc(struct ieee80211vap * vap,struct ieee80211_key * k,ieee80211_keyix * keyix,ieee80211_keyix * rxkeyix)1517 mwl_key_alloc(struct ieee80211vap *vap, struct ieee80211_key *k,
1518 ieee80211_keyix *keyix, ieee80211_keyix *rxkeyix)
1519 {
1520 struct mwl_softc *sc = vap->iv_ic->ic_softc;
1521
1522 if (k->wk_keyix != IEEE80211_KEYIX_NONE ||
1523 (k->wk_flags & IEEE80211_KEY_GROUP)) {
1524 if (!(&vap->iv_nw_keys[0] <= k &&
1525 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID])) {
1526 /* should not happen */
1527 DPRINTF(sc, MWL_DEBUG_KEYCACHE,
1528 "%s: bogus group key\n", __func__);
1529 return 0;
1530 }
1531 /* give the caller what they requested */
1532 *keyix = *rxkeyix = ieee80211_crypto_get_key_wepidx(vap, k);
1533 } else {
1534 /*
1535 * Firmware handles key allocation.
1536 */
1537 *keyix = *rxkeyix = 0;
1538 }
1539 return 1;
1540 }
1541
1542 /*
1543 * Delete a key entry allocated by mwl_key_alloc.
1544 */
1545 static int
mwl_key_delete(struct ieee80211vap * vap,const struct ieee80211_key * k)1546 mwl_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k)
1547 {
1548 struct mwl_softc *sc = vap->iv_ic->ic_softc;
1549 struct mwl_hal_vap *hvap = MWL_VAP(vap)->mv_hvap;
1550 MWL_HAL_KEYVAL hk;
1551 const uint8_t bcastaddr[IEEE80211_ADDR_LEN] =
1552 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
1553
1554 if (hvap == NULL) {
1555 if (vap->iv_opmode != IEEE80211_M_WDS) {
1556 /* XXX monitor mode? */
1557 DPRINTF(sc, MWL_DEBUG_KEYCACHE,
1558 "%s: no hvap for opmode %d\n", __func__,
1559 vap->iv_opmode);
1560 return 0;
1561 }
1562 hvap = MWL_VAP(vap)->mv_ap_hvap;
1563 }
1564
1565 DPRINTF(sc, MWL_DEBUG_KEYCACHE, "%s: delete key %u\n",
1566 __func__, k->wk_keyix);
1567
1568 memset(&hk, 0, sizeof(hk));
1569 hk.keyIndex = k->wk_keyix;
1570 switch (k->wk_cipher->ic_cipher) {
1571 case IEEE80211_CIPHER_WEP:
1572 hk.keyTypeId = KEY_TYPE_ID_WEP;
1573 break;
1574 case IEEE80211_CIPHER_TKIP:
1575 hk.keyTypeId = KEY_TYPE_ID_TKIP;
1576 break;
1577 case IEEE80211_CIPHER_AES_CCM:
1578 hk.keyTypeId = KEY_TYPE_ID_AES;
1579 break;
1580 default:
1581 /* XXX should not happen */
1582 DPRINTF(sc, MWL_DEBUG_KEYCACHE, "%s: unknown cipher %d\n",
1583 __func__, k->wk_cipher->ic_cipher);
1584 return 0;
1585 }
1586 return (mwl_hal_keyreset(hvap, &hk, bcastaddr) == 0); /*XXX*/
1587 }
1588
1589 static __inline int
addgroupflags(MWL_HAL_KEYVAL * hk,const struct ieee80211_key * k)1590 addgroupflags(MWL_HAL_KEYVAL *hk, const struct ieee80211_key *k)
1591 {
1592 if (k->wk_flags & IEEE80211_KEY_GROUP) {
1593 if (k->wk_flags & IEEE80211_KEY_XMIT)
1594 hk->keyFlags |= KEY_FLAG_TXGROUPKEY;
1595 if (k->wk_flags & IEEE80211_KEY_RECV)
1596 hk->keyFlags |= KEY_FLAG_RXGROUPKEY;
1597 return 1;
1598 } else
1599 return 0;
1600 }
1601
1602 /*
1603 * Set the key cache contents for the specified key. Key cache
1604 * slot(s) must already have been allocated by mwl_key_alloc.
1605 */
1606 static int
mwl_key_set(struct ieee80211vap * vap,const struct ieee80211_key * k)1607 mwl_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k)
1608 {
1609 return (_mwl_key_set(vap, k, k->wk_macaddr));
1610 }
1611
1612 static int
_mwl_key_set(struct ieee80211vap * vap,const struct ieee80211_key * k,const uint8_t mac[IEEE80211_ADDR_LEN])1613 _mwl_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k,
1614 const uint8_t mac[IEEE80211_ADDR_LEN])
1615 {
1616 #define GRPXMIT (IEEE80211_KEY_XMIT | IEEE80211_KEY_GROUP)
1617 /* NB: static wep keys are marked GROUP+tx/rx; GTK will be tx or rx */
1618 #define IEEE80211_IS_STATICKEY(k) \
1619 (((k)->wk_flags & (GRPXMIT|IEEE80211_KEY_RECV)) == \
1620 (GRPXMIT|IEEE80211_KEY_RECV))
1621 struct mwl_softc *sc = vap->iv_ic->ic_softc;
1622 struct mwl_hal_vap *hvap = MWL_VAP(vap)->mv_hvap;
1623 const struct ieee80211_cipher *cip = k->wk_cipher;
1624 const uint8_t *macaddr;
1625 MWL_HAL_KEYVAL hk;
1626
1627 KASSERT((k->wk_flags & IEEE80211_KEY_SWCRYPT) == 0,
1628 ("s/w crypto set?"));
1629
1630 if (hvap == NULL) {
1631 if (vap->iv_opmode != IEEE80211_M_WDS) {
1632 /* XXX monitor mode? */
1633 DPRINTF(sc, MWL_DEBUG_KEYCACHE,
1634 "%s: no hvap for opmode %d\n", __func__,
1635 vap->iv_opmode);
1636 return 0;
1637 }
1638 hvap = MWL_VAP(vap)->mv_ap_hvap;
1639 }
1640 memset(&hk, 0, sizeof(hk));
1641 hk.keyIndex = k->wk_keyix;
1642 switch (cip->ic_cipher) {
1643 case IEEE80211_CIPHER_WEP:
1644 hk.keyTypeId = KEY_TYPE_ID_WEP;
1645 hk.keyLen = k->wk_keylen;
1646 if (k->wk_keyix == vap->iv_def_txkey)
1647 hk.keyFlags = KEY_FLAG_WEP_TXKEY;
1648 if (!IEEE80211_IS_STATICKEY(k)) {
1649 /* NB: WEP is never used for the PTK */
1650 (void) addgroupflags(&hk, k);
1651 }
1652 break;
1653 case IEEE80211_CIPHER_TKIP:
1654 hk.keyTypeId = KEY_TYPE_ID_TKIP;
1655 hk.key.tkip.tsc.high = (uint32_t)(k->wk_keytsc >> 16);
1656 hk.key.tkip.tsc.low = (uint16_t)k->wk_keytsc;
1657 hk.keyFlags = KEY_FLAG_TSC_VALID | KEY_FLAG_MICKEY_VALID;
1658 hk.keyLen = k->wk_keylen + IEEE80211_MICBUF_SIZE;
1659 if (!addgroupflags(&hk, k))
1660 hk.keyFlags |= KEY_FLAG_PAIRWISE;
1661 break;
1662 case IEEE80211_CIPHER_AES_CCM:
1663 hk.keyTypeId = KEY_TYPE_ID_AES;
1664 hk.keyLen = k->wk_keylen;
1665 if (!addgroupflags(&hk, k))
1666 hk.keyFlags |= KEY_FLAG_PAIRWISE;
1667 break;
1668 default:
1669 /* XXX should not happen */
1670 DPRINTF(sc, MWL_DEBUG_KEYCACHE, "%s: unknown cipher %d\n",
1671 __func__, k->wk_cipher->ic_cipher);
1672 return 0;
1673 }
1674 /*
1675 * NB: tkip mic keys get copied here too; the layout
1676 * just happens to match that in ieee80211_key.
1677 */
1678 memcpy(hk.key.aes, k->wk_key, hk.keyLen);
1679
1680 /*
1681 * Locate address of sta db entry for writing key;
1682 * the convention unfortunately is somewhat different
1683 * than how net80211, hostapd, and wpa_supplicant think.
1684 */
1685 if (vap->iv_opmode == IEEE80211_M_STA) {
1686 /*
1687 * NB: keys plumbed before the sta reaches AUTH state
1688 * will be discarded or written to the wrong sta db
1689 * entry because iv_bss is meaningless. This is ok
1690 * (right now) because we handle deferred plumbing of
1691 * WEP keys when the sta reaches AUTH state.
1692 */
1693 macaddr = vap->iv_bss->ni_bssid;
1694 if ((k->wk_flags & IEEE80211_KEY_GROUP) == 0) {
1695 /* XXX plumb to local sta db too for static key wep */
1696 mwl_hal_keyset(hvap, &hk, vap->iv_myaddr);
1697 }
1698 } else if (vap->iv_opmode == IEEE80211_M_WDS &&
1699 vap->iv_state != IEEE80211_S_RUN) {
1700 /*
1701 * Prior to RUN state a WDS vap will not it's BSS node
1702 * setup so we will plumb the key to the wrong mac
1703 * address (it'll be our local address). Workaround
1704 * this for the moment by grabbing the correct address.
1705 */
1706 macaddr = vap->iv_des_bssid;
1707 } else if ((k->wk_flags & GRPXMIT) == GRPXMIT)
1708 macaddr = vap->iv_myaddr;
1709 else
1710 macaddr = mac;
1711 KEYPRINTF(sc, &hk, macaddr);
1712 return (mwl_hal_keyset(hvap, &hk, macaddr) == 0);
1713 #undef IEEE80211_IS_STATICKEY
1714 #undef GRPXMIT
1715 }
1716
1717 /*
1718 * Set the multicast filter contents into the hardware.
1719 * XXX f/w has no support; just defer to the os.
1720 */
1721 static void
mwl_setmcastfilter(struct mwl_softc * sc)1722 mwl_setmcastfilter(struct mwl_softc *sc)
1723 {
1724 #if 0
1725 struct ether_multi *enm;
1726 struct ether_multistep estep;
1727 uint8_t macs[IEEE80211_ADDR_LEN*MWL_HAL_MCAST_MAX];/* XXX stack use */
1728 uint8_t *mp;
1729 int nmc;
1730
1731 mp = macs;
1732 nmc = 0;
1733 ETHER_FIRST_MULTI(estep, &sc->sc_ec, enm);
1734 while (enm != NULL) {
1735 /* XXX Punt on ranges. */
1736 if (nmc == MWL_HAL_MCAST_MAX ||
1737 !IEEE80211_ADDR_EQ(enm->enm_addrlo, enm->enm_addrhi)) {
1738 ifp->if_flags |= IFF_ALLMULTI;
1739 return;
1740 }
1741 IEEE80211_ADDR_COPY(mp, enm->enm_addrlo);
1742 mp += IEEE80211_ADDR_LEN, nmc++;
1743 ETHER_NEXT_MULTI(estep, enm);
1744 }
1745 ifp->if_flags &= ~IFF_ALLMULTI;
1746 mwl_hal_setmcast(sc->sc_mh, nmc, macs);
1747 #endif
1748 }
1749
1750 static int
mwl_mode_init(struct mwl_softc * sc)1751 mwl_mode_init(struct mwl_softc *sc)
1752 {
1753 struct ieee80211com *ic = &sc->sc_ic;
1754 struct mwl_hal *mh = sc->sc_mh;
1755
1756 mwl_hal_setpromisc(mh, ic->ic_promisc > 0);
1757 mwl_setmcastfilter(sc);
1758
1759 return 0;
1760 }
1761
1762 /*
1763 * Callback from the 802.11 layer after a multicast state change.
1764 */
1765 static void
mwl_update_mcast(struct ieee80211com * ic)1766 mwl_update_mcast(struct ieee80211com *ic)
1767 {
1768 struct mwl_softc *sc = ic->ic_softc;
1769
1770 mwl_setmcastfilter(sc);
1771 }
1772
1773 /*
1774 * Callback from the 802.11 layer after a promiscuous mode change.
1775 * Note this interface does not check the operating mode as this
1776 * is an internal callback and we are expected to honor the current
1777 * state (e.g. this is used for setting the interface in promiscuous
1778 * mode when operating in hostap mode to do ACS).
1779 */
1780 static void
mwl_update_promisc(struct ieee80211com * ic)1781 mwl_update_promisc(struct ieee80211com *ic)
1782 {
1783 struct mwl_softc *sc = ic->ic_softc;
1784
1785 mwl_hal_setpromisc(sc->sc_mh, ic->ic_promisc > 0);
1786 }
1787
1788 /*
1789 * Callback from the 802.11 layer to update the slot time
1790 * based on the current setting. We use it to notify the
1791 * firmware of ERP changes and the f/w takes care of things
1792 * like slot time and preamble.
1793 */
1794 static void
mwl_updateslot(struct ieee80211com * ic)1795 mwl_updateslot(struct ieee80211com *ic)
1796 {
1797 struct mwl_softc *sc = ic->ic_softc;
1798 struct mwl_hal *mh = sc->sc_mh;
1799 int prot;
1800
1801 /* NB: can be called early; suppress needless cmds */
1802 if (!sc->sc_running)
1803 return;
1804
1805 /*
1806 * Calculate the ERP flags. The firwmare will use
1807 * this to carry out the appropriate measures.
1808 */
1809 prot = 0;
1810 if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan)) {
1811 if ((ic->ic_flags & IEEE80211_F_SHSLOT) == 0)
1812 prot |= IEEE80211_ERP_NON_ERP_PRESENT;
1813 if (ic->ic_flags & IEEE80211_F_USEPROT)
1814 prot |= IEEE80211_ERP_USE_PROTECTION;
1815 if (ic->ic_flags & IEEE80211_F_USEBARKER)
1816 prot |= IEEE80211_ERP_LONG_PREAMBLE;
1817 }
1818
1819 DPRINTF(sc, MWL_DEBUG_RESET,
1820 "%s: chan %u MHz/flags 0x%x %s slot, (prot 0x%x ic_flags 0x%x)\n",
1821 __func__, ic->ic_curchan->ic_freq, ic->ic_curchan->ic_flags,
1822 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long", prot,
1823 ic->ic_flags);
1824
1825 mwl_hal_setgprot(mh, prot);
1826 }
1827
1828 /*
1829 * Setup the beacon frame.
1830 */
1831 static int
mwl_beacon_setup(struct ieee80211vap * vap)1832 mwl_beacon_setup(struct ieee80211vap *vap)
1833 {
1834 struct mwl_hal_vap *hvap = MWL_VAP(vap)->mv_hvap;
1835 struct ieee80211_node *ni = vap->iv_bss;
1836 struct mbuf *m;
1837
1838 m = ieee80211_beacon_alloc(ni);
1839 if (m == NULL)
1840 return ENOBUFS;
1841 mwl_hal_setbeacon(hvap, mtod(m, const void *), m->m_len);
1842 m_free(m);
1843
1844 return 0;
1845 }
1846
1847 /*
1848 * Update the beacon frame in response to a change.
1849 */
1850 static void
mwl_beacon_update(struct ieee80211vap * vap,int item)1851 mwl_beacon_update(struct ieee80211vap *vap, int item)
1852 {
1853 struct mwl_hal_vap *hvap = MWL_VAP(vap)->mv_hvap;
1854 struct ieee80211com *ic = vap->iv_ic;
1855
1856 KASSERT(hvap != NULL, ("no beacon"));
1857 switch (item) {
1858 case IEEE80211_BEACON_ERP:
1859 mwl_updateslot(ic);
1860 break;
1861 case IEEE80211_BEACON_HTINFO:
1862 mwl_hal_setnprotmode(hvap, _IEEE80211_MASKSHIFT(
1863 ic->ic_curhtprotmode, IEEE80211_HTINFO_OPMODE));
1864 break;
1865 case IEEE80211_BEACON_CAPS:
1866 case IEEE80211_BEACON_WME:
1867 case IEEE80211_BEACON_APPIE:
1868 case IEEE80211_BEACON_CSA:
1869 break;
1870 case IEEE80211_BEACON_TIM:
1871 /* NB: firmware always forms TIM */
1872 return;
1873 }
1874 /* XXX retain beacon frame and update */
1875 mwl_beacon_setup(vap);
1876 }
1877
1878 static void
mwl_load_cb(void * arg,bus_dma_segment_t * segs,int nsegs,int error)1879 mwl_load_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
1880 {
1881 bus_addr_t *paddr = (bus_addr_t*) arg;
1882 KASSERT(error == 0, ("error %u on bus_dma callback", error));
1883 *paddr = segs->ds_addr;
1884 }
1885
1886 #ifdef MWL_HOST_PS_SUPPORT
1887 /*
1888 * Handle power save station occupancy changes.
1889 */
1890 static void
mwl_update_ps(struct ieee80211vap * vap,int nsta)1891 mwl_update_ps(struct ieee80211vap *vap, int nsta)
1892 {
1893 struct mwl_vap *mvp = MWL_VAP(vap);
1894
1895 if (nsta == 0 || mvp->mv_last_ps_sta == 0)
1896 mwl_hal_setpowersave_bss(mvp->mv_hvap, nsta);
1897 mvp->mv_last_ps_sta = nsta;
1898 }
1899
1900 /*
1901 * Handle associated station power save state changes.
1902 */
1903 static int
mwl_set_tim(struct ieee80211_node * ni,int set)1904 mwl_set_tim(struct ieee80211_node *ni, int set)
1905 {
1906 struct ieee80211vap *vap = ni->ni_vap;
1907 struct mwl_vap *mvp = MWL_VAP(vap);
1908
1909 if (mvp->mv_set_tim(ni, set)) { /* NB: state change */
1910 mwl_hal_setpowersave_sta(mvp->mv_hvap,
1911 IEEE80211_AID(ni->ni_associd), set);
1912 return 1;
1913 } else
1914 return 0;
1915 }
1916 #endif /* MWL_HOST_PS_SUPPORT */
1917
1918 static int
mwl_desc_setup(struct mwl_softc * sc,const char * name,struct mwl_descdma * dd,int nbuf,size_t bufsize,int ndesc,size_t descsize)1919 mwl_desc_setup(struct mwl_softc *sc, const char *name,
1920 struct mwl_descdma *dd,
1921 int nbuf, size_t bufsize, int ndesc, size_t descsize)
1922 {
1923 uint8_t *ds;
1924 int error;
1925
1926 DPRINTF(sc, MWL_DEBUG_RESET,
1927 "%s: %s DMA: %u bufs (%ju) %u desc/buf (%ju)\n",
1928 __func__, name, nbuf, (uintmax_t) bufsize,
1929 ndesc, (uintmax_t) descsize);
1930
1931 dd->dd_name = name;
1932 dd->dd_desc_len = nbuf * ndesc * descsize;
1933
1934 /*
1935 * Setup DMA descriptor area.
1936 */
1937 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), /* parent */
1938 PAGE_SIZE, 0, /* alignment, bounds */
1939 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1940 BUS_SPACE_MAXADDR, /* highaddr */
1941 NULL, NULL, /* filter, filterarg */
1942 dd->dd_desc_len, /* maxsize */
1943 1, /* nsegments */
1944 dd->dd_desc_len, /* maxsegsize */
1945 BUS_DMA_ALLOCNOW, /* flags */
1946 NULL, /* lockfunc */
1947 NULL, /* lockarg */
1948 &dd->dd_dmat);
1949 if (error != 0) {
1950 device_printf(sc->sc_dev, "cannot allocate %s DMA tag\n", dd->dd_name);
1951 return error;
1952 }
1953
1954 /* allocate descriptors */
1955 error = bus_dmamem_alloc(dd->dd_dmat, (void**) &dd->dd_desc,
1956 BUS_DMA_NOWAIT | BUS_DMA_COHERENT,
1957 &dd->dd_dmamap);
1958 if (error != 0) {
1959 device_printf(sc->sc_dev, "unable to alloc memory for %u %s descriptors, "
1960 "error %u\n", nbuf * ndesc, dd->dd_name, error);
1961 goto fail1;
1962 }
1963
1964 error = bus_dmamap_load(dd->dd_dmat, dd->dd_dmamap,
1965 dd->dd_desc, dd->dd_desc_len,
1966 mwl_load_cb, &dd->dd_desc_paddr,
1967 BUS_DMA_NOWAIT);
1968 if (error != 0) {
1969 device_printf(sc->sc_dev, "unable to map %s descriptors, error %u\n",
1970 dd->dd_name, error);
1971 goto fail2;
1972 }
1973
1974 ds = dd->dd_desc;
1975 memset(ds, 0, dd->dd_desc_len);
1976 DPRINTF(sc, MWL_DEBUG_RESET,
1977 "%s: %s DMA map: %p (%lu) -> 0x%jx (%lu)\n",
1978 __func__, dd->dd_name, ds, (u_long) dd->dd_desc_len,
1979 (uintmax_t) dd->dd_desc_paddr, /*XXX*/ (u_long) dd->dd_desc_len);
1980
1981 return 0;
1982 fail2:
1983 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap);
1984 fail1:
1985 bus_dma_tag_destroy(dd->dd_dmat);
1986 memset(dd, 0, sizeof(*dd));
1987 return error;
1988 #undef DS2PHYS
1989 }
1990
1991 static void
mwl_desc_cleanup(struct mwl_softc * sc,struct mwl_descdma * dd)1992 mwl_desc_cleanup(struct mwl_softc *sc, struct mwl_descdma *dd)
1993 {
1994 bus_dmamap_unload(dd->dd_dmat, dd->dd_dmamap);
1995 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap);
1996 bus_dma_tag_destroy(dd->dd_dmat);
1997
1998 memset(dd, 0, sizeof(*dd));
1999 }
2000
2001 /*
2002 * Construct a tx q's free list. The order of entries on
2003 * the list must reflect the physical layout of tx descriptors
2004 * because the firmware pre-fetches descriptors.
2005 *
2006 * XXX might be better to use indices into the buffer array.
2007 */
2008 static void
mwl_txq_reset(struct mwl_softc * sc,struct mwl_txq * txq)2009 mwl_txq_reset(struct mwl_softc *sc, struct mwl_txq *txq)
2010 {
2011 struct mwl_txbuf *bf;
2012 int i;
2013
2014 bf = txq->dma.dd_bufptr;
2015 STAILQ_INIT(&txq->free);
2016 for (i = 0; i < mwl_txbuf; i++, bf++)
2017 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list);
2018 txq->nfree = i;
2019 }
2020
2021 #define DS2PHYS(_dd, _ds) \
2022 ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc))
2023
2024 static int
mwl_txdma_setup(struct mwl_softc * sc,struct mwl_txq * txq)2025 mwl_txdma_setup(struct mwl_softc *sc, struct mwl_txq *txq)
2026 {
2027 int error, bsize, i;
2028 struct mwl_txbuf *bf;
2029 struct mwl_txdesc *ds;
2030
2031 error = mwl_desc_setup(sc, "tx", &txq->dma,
2032 mwl_txbuf, sizeof(struct mwl_txbuf),
2033 MWL_TXDESC, sizeof(struct mwl_txdesc));
2034 if (error != 0)
2035 return error;
2036
2037 /* allocate and setup tx buffers */
2038 bsize = mwl_txbuf * sizeof(struct mwl_txbuf);
2039 bf = malloc(bsize, M_MWLDEV, M_NOWAIT | M_ZERO);
2040 if (bf == NULL) {
2041 device_printf(sc->sc_dev, "malloc of %u tx buffers failed\n",
2042 mwl_txbuf);
2043 return ENOMEM;
2044 }
2045 txq->dma.dd_bufptr = bf;
2046
2047 ds = txq->dma.dd_desc;
2048 for (i = 0; i < mwl_txbuf; i++, bf++, ds += MWL_TXDESC) {
2049 bf->bf_desc = ds;
2050 bf->bf_daddr = DS2PHYS(&txq->dma, ds);
2051 error = bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT,
2052 &bf->bf_dmamap);
2053 if (error != 0) {
2054 device_printf(sc->sc_dev, "unable to create dmamap for tx "
2055 "buffer %u, error %u\n", i, error);
2056 return error;
2057 }
2058 }
2059 mwl_txq_reset(sc, txq);
2060 return 0;
2061 }
2062
2063 static void
mwl_txdma_cleanup(struct mwl_softc * sc,struct mwl_txq * txq)2064 mwl_txdma_cleanup(struct mwl_softc *sc, struct mwl_txq *txq)
2065 {
2066 struct mwl_txbuf *bf;
2067 int i;
2068
2069 bf = txq->dma.dd_bufptr;
2070 for (i = 0; i < mwl_txbuf; i++, bf++) {
2071 KASSERT(bf->bf_m == NULL, ("mbuf on free list"));
2072 KASSERT(bf->bf_node == NULL, ("node on free list"));
2073 if (bf->bf_dmamap != NULL)
2074 bus_dmamap_destroy(sc->sc_dmat, bf->bf_dmamap);
2075 }
2076 STAILQ_INIT(&txq->free);
2077 txq->nfree = 0;
2078 if (txq->dma.dd_bufptr != NULL) {
2079 free(txq->dma.dd_bufptr, M_MWLDEV);
2080 txq->dma.dd_bufptr = NULL;
2081 }
2082 if (txq->dma.dd_desc_len != 0)
2083 mwl_desc_cleanup(sc, &txq->dma);
2084 }
2085
2086 static int
mwl_rxdma_setup(struct mwl_softc * sc)2087 mwl_rxdma_setup(struct mwl_softc *sc)
2088 {
2089 int error, jumbosize, bsize, i;
2090 struct mwl_rxbuf *bf;
2091 struct mwl_jumbo *rbuf;
2092 struct mwl_rxdesc *ds;
2093 caddr_t data;
2094
2095 error = mwl_desc_setup(sc, "rx", &sc->sc_rxdma,
2096 mwl_rxdesc, sizeof(struct mwl_rxbuf),
2097 1, sizeof(struct mwl_rxdesc));
2098 if (error != 0)
2099 return error;
2100
2101 /*
2102 * Receive is done to a private pool of jumbo buffers.
2103 * This allows us to attach to mbuf's and avoid re-mapping
2104 * memory on each rx we post. We allocate a large chunk
2105 * of memory and manage it in the driver. The mbuf free
2106 * callback method is used to reclaim frames after sending
2107 * them up the stack. By default we allocate 2x the number of
2108 * rx descriptors configured so we have some slop to hold
2109 * us while frames are processed.
2110 */
2111 if (mwl_rxbuf < 2*mwl_rxdesc) {
2112 device_printf(sc->sc_dev,
2113 "too few rx dma buffers (%d); increasing to %d\n",
2114 mwl_rxbuf, 2*mwl_rxdesc);
2115 mwl_rxbuf = 2*mwl_rxdesc;
2116 }
2117 jumbosize = roundup(MWL_AGGR_SIZE, PAGE_SIZE);
2118 sc->sc_rxmemsize = mwl_rxbuf*jumbosize;
2119
2120 error = bus_dma_tag_create(sc->sc_dmat, /* parent */
2121 PAGE_SIZE, 0, /* alignment, bounds */
2122 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
2123 BUS_SPACE_MAXADDR, /* highaddr */
2124 NULL, NULL, /* filter, filterarg */
2125 sc->sc_rxmemsize, /* maxsize */
2126 1, /* nsegments */
2127 sc->sc_rxmemsize, /* maxsegsize */
2128 BUS_DMA_ALLOCNOW, /* flags */
2129 NULL, /* lockfunc */
2130 NULL, /* lockarg */
2131 &sc->sc_rxdmat);
2132 if (error != 0) {
2133 device_printf(sc->sc_dev, "could not create rx DMA tag\n");
2134 return error;
2135 }
2136
2137 error = bus_dmamem_alloc(sc->sc_rxdmat, (void**) &sc->sc_rxmem,
2138 BUS_DMA_NOWAIT | BUS_DMA_COHERENT,
2139 &sc->sc_rxmap);
2140 if (error != 0) {
2141 device_printf(sc->sc_dev, "could not alloc %ju bytes of rx DMA memory\n",
2142 (uintmax_t) sc->sc_rxmemsize);
2143 return error;
2144 }
2145
2146 error = bus_dmamap_load(sc->sc_rxdmat, sc->sc_rxmap,
2147 sc->sc_rxmem, sc->sc_rxmemsize,
2148 mwl_load_cb, &sc->sc_rxmem_paddr,
2149 BUS_DMA_NOWAIT);
2150 if (error != 0) {
2151 device_printf(sc->sc_dev, "could not load rx DMA map\n");
2152 return error;
2153 }
2154
2155 /*
2156 * Allocate rx buffers and set them up.
2157 */
2158 bsize = mwl_rxdesc * sizeof(struct mwl_rxbuf);
2159 bf = malloc(bsize, M_MWLDEV, M_NOWAIT | M_ZERO);
2160 if (bf == NULL) {
2161 device_printf(sc->sc_dev, "malloc of %u rx buffers failed\n", bsize);
2162 return error;
2163 }
2164 sc->sc_rxdma.dd_bufptr = bf;
2165
2166 STAILQ_INIT(&sc->sc_rxbuf);
2167 ds = sc->sc_rxdma.dd_desc;
2168 for (i = 0; i < mwl_rxdesc; i++, bf++, ds++) {
2169 bf->bf_desc = ds;
2170 bf->bf_daddr = DS2PHYS(&sc->sc_rxdma, ds);
2171 /* pre-assign dma buffer */
2172 bf->bf_data = ((uint8_t *)sc->sc_rxmem) + (i*jumbosize);
2173 /* NB: tail is intentional to preserve descriptor order */
2174 STAILQ_INSERT_TAIL(&sc->sc_rxbuf, bf, bf_list);
2175 }
2176
2177 /*
2178 * Place remainder of dma memory buffers on the free list.
2179 */
2180 SLIST_INIT(&sc->sc_rxfree);
2181 for (; i < mwl_rxbuf; i++) {
2182 data = ((uint8_t *)sc->sc_rxmem) + (i*jumbosize);
2183 rbuf = MWL_JUMBO_DATA2BUF(data);
2184 SLIST_INSERT_HEAD(&sc->sc_rxfree, rbuf, next);
2185 sc->sc_nrxfree++;
2186 }
2187 return 0;
2188 }
2189 #undef DS2PHYS
2190
2191 static void
mwl_rxdma_cleanup(struct mwl_softc * sc)2192 mwl_rxdma_cleanup(struct mwl_softc *sc)
2193 {
2194 if (sc->sc_rxmem_paddr != 0) {
2195 bus_dmamap_unload(sc->sc_rxdmat, sc->sc_rxmap);
2196 sc->sc_rxmem_paddr = 0;
2197 }
2198 if (sc->sc_rxmem != NULL) {
2199 bus_dmamem_free(sc->sc_rxdmat, sc->sc_rxmem, sc->sc_rxmap);
2200 sc->sc_rxmem = NULL;
2201 }
2202 if (sc->sc_rxdma.dd_bufptr != NULL) {
2203 free(sc->sc_rxdma.dd_bufptr, M_MWLDEV);
2204 sc->sc_rxdma.dd_bufptr = NULL;
2205 }
2206 if (sc->sc_rxdma.dd_desc_len != 0)
2207 mwl_desc_cleanup(sc, &sc->sc_rxdma);
2208 }
2209
2210 static int
mwl_dma_setup(struct mwl_softc * sc)2211 mwl_dma_setup(struct mwl_softc *sc)
2212 {
2213 int error, i;
2214
2215 error = mwl_rxdma_setup(sc);
2216 if (error != 0) {
2217 mwl_rxdma_cleanup(sc);
2218 return error;
2219 }
2220
2221 for (i = 0; i < MWL_NUM_TX_QUEUES; i++) {
2222 error = mwl_txdma_setup(sc, &sc->sc_txq[i]);
2223 if (error != 0) {
2224 mwl_dma_cleanup(sc);
2225 return error;
2226 }
2227 }
2228 return 0;
2229 }
2230
2231 static void
mwl_dma_cleanup(struct mwl_softc * sc)2232 mwl_dma_cleanup(struct mwl_softc *sc)
2233 {
2234 int i;
2235
2236 for (i = 0; i < MWL_NUM_TX_QUEUES; i++)
2237 mwl_txdma_cleanup(sc, &sc->sc_txq[i]);
2238 mwl_rxdma_cleanup(sc);
2239 }
2240
2241 static struct ieee80211_node *
mwl_node_alloc(struct ieee80211vap * vap,const uint8_t mac[IEEE80211_ADDR_LEN])2242 mwl_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
2243 {
2244 struct ieee80211com *ic = vap->iv_ic;
2245 struct mwl_softc *sc = ic->ic_softc;
2246 const size_t space = sizeof(struct mwl_node);
2247 struct mwl_node *mn;
2248
2249 mn = malloc(space, M_80211_NODE, M_NOWAIT|M_ZERO);
2250 if (mn == NULL) {
2251 /* XXX stat+msg */
2252 return NULL;
2253 }
2254 DPRINTF(sc, MWL_DEBUG_NODE, "%s: mn %p\n", __func__, mn);
2255 return &mn->mn_node;
2256 }
2257
2258 static void
mwl_node_cleanup(struct ieee80211_node * ni)2259 mwl_node_cleanup(struct ieee80211_node *ni)
2260 {
2261 struct ieee80211com *ic = ni->ni_ic;
2262 struct mwl_softc *sc = ic->ic_softc;
2263 struct mwl_node *mn = MWL_NODE(ni);
2264
2265 DPRINTF(sc, MWL_DEBUG_NODE, "%s: ni %p ic %p staid %d\n",
2266 __func__, ni, ni->ni_ic, mn->mn_staid);
2267
2268 if (mn->mn_staid != 0) {
2269 struct ieee80211vap *vap = ni->ni_vap;
2270
2271 if (mn->mn_hvap != NULL) {
2272 if (vap->iv_opmode == IEEE80211_M_STA)
2273 mwl_hal_delstation(mn->mn_hvap, vap->iv_myaddr);
2274 else
2275 mwl_hal_delstation(mn->mn_hvap, ni->ni_macaddr);
2276 }
2277 /*
2278 * NB: legacy WDS peer sta db entry is installed using
2279 * the associate ap's hvap; use it again to delete it.
2280 * XXX can vap be NULL?
2281 */
2282 else if (vap->iv_opmode == IEEE80211_M_WDS &&
2283 MWL_VAP(vap)->mv_ap_hvap != NULL)
2284 mwl_hal_delstation(MWL_VAP(vap)->mv_ap_hvap,
2285 ni->ni_macaddr);
2286 delstaid(sc, mn->mn_staid);
2287 mn->mn_staid = 0;
2288 }
2289 sc->sc_node_cleanup(ni);
2290 }
2291
2292 /*
2293 * Reclaim rx dma buffers from packets sitting on the ampdu
2294 * reorder queue for a station. We replace buffers with a
2295 * system cluster (if available).
2296 */
2297 static void
mwl_ampdu_rxdma_reclaim(struct ieee80211_rx_ampdu * rap)2298 mwl_ampdu_rxdma_reclaim(struct ieee80211_rx_ampdu *rap)
2299 {
2300 #if 0
2301 int i, n, off;
2302 struct mbuf *m;
2303 void *cl;
2304
2305 n = rap->rxa_qframes;
2306 for (i = 0; i < rap->rxa_wnd && n > 0; i++) {
2307 m = rap->rxa_m[i];
2308 if (m == NULL)
2309 continue;
2310 n--;
2311 /* our dma buffers have a well-known free routine */
2312 if ((m->m_flags & M_EXT) == 0 ||
2313 m->m_ext.ext_free != mwl_ext_free)
2314 continue;
2315 /*
2316 * Try to allocate a cluster and move the data.
2317 */
2318 off = m->m_data - m->m_ext.ext_buf;
2319 if (off + m->m_pkthdr.len > MCLBYTES) {
2320 /* XXX no AMSDU for now */
2321 continue;
2322 }
2323 cl = pool_cache_get_paddr(&mclpool_cache, 0,
2324 &m->m_ext.ext_paddr);
2325 if (cl != NULL) {
2326 /*
2327 * Copy the existing data to the cluster, remove
2328 * the rx dma buffer, and attach the cluster in
2329 * its place. Note we preserve the offset to the
2330 * data so frames being bridged can still prepend
2331 * their headers without adding another mbuf.
2332 */
2333 memcpy((caddr_t) cl + off, m->m_data, m->m_pkthdr.len);
2334 MEXTREMOVE(m);
2335 MEXTADD(m, cl, MCLBYTES, 0, NULL, &mclpool_cache);
2336 /* setup mbuf like _MCLGET does */
2337 m->m_flags |= M_CLUSTER | M_EXT_RW;
2338 _MOWNERREF(m, M_EXT | M_CLUSTER);
2339 /* NB: m_data is clobbered by MEXTADDR, adjust */
2340 m->m_data += off;
2341 }
2342 }
2343 #endif
2344 }
2345
2346 /*
2347 * Callback to reclaim resources. We first let the
2348 * net80211 layer do it's thing, then if we are still
2349 * blocked by a lack of rx dma buffers we walk the ampdu
2350 * reorder q's to reclaim buffers by copying to a system
2351 * cluster.
2352 */
2353 static void
mwl_node_drain(struct ieee80211_node * ni)2354 mwl_node_drain(struct ieee80211_node *ni)
2355 {
2356 struct ieee80211com *ic = ni->ni_ic;
2357 struct mwl_softc *sc = ic->ic_softc;
2358 struct mwl_node *mn = MWL_NODE(ni);
2359
2360 DPRINTF(sc, MWL_DEBUG_NODE, "%s: ni %p vap %p staid %d\n",
2361 __func__, ni, ni->ni_vap, mn->mn_staid);
2362
2363 /* NB: call up first to age out ampdu q's */
2364 sc->sc_node_drain(ni);
2365
2366 /* XXX better to not check low water mark? */
2367 if (sc->sc_rxblocked && mn->mn_staid != 0 &&
2368 (ni->ni_flags & IEEE80211_NODE_HT)) {
2369 uint8_t tid;
2370 /*
2371 * Walk the reorder q and reclaim rx dma buffers by copying
2372 * the packet contents into clusters.
2373 */
2374 for (tid = 0; tid < WME_NUM_TID; tid++) {
2375 struct ieee80211_rx_ampdu *rap;
2376
2377 rap = &ni->ni_rx_ampdu[tid];
2378 if ((rap->rxa_flags & IEEE80211_AGGR_XCHGPEND) == 0)
2379 continue;
2380 if (rap->rxa_qframes)
2381 mwl_ampdu_rxdma_reclaim(rap);
2382 }
2383 }
2384 }
2385
2386 static void
mwl_node_getsignal(const struct ieee80211_node * ni,int8_t * rssi,int8_t * noise)2387 mwl_node_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise)
2388 {
2389 *rssi = ni->ni_ic->ic_node_getrssi(ni);
2390 #ifdef MWL_ANT_INFO_SUPPORT
2391 #if 0
2392 /* XXX need to smooth data */
2393 *noise = -MWL_NODE_CONST(ni)->mn_ai.nf;
2394 #else
2395 *noise = -95; /* XXX */
2396 #endif
2397 #else
2398 *noise = -95; /* XXX */
2399 #endif
2400 }
2401
2402 /*
2403 * Convert Hardware per-antenna rssi info to common format:
2404 * Let a1, a2, a3 represent the amplitudes per chain
2405 * Let amax represent max[a1, a2, a3]
2406 * Rssi1_dBm = RSSI_dBm + 20*log10(a1/amax)
2407 * Rssi1_dBm = RSSI_dBm + 20*log10(a1) - 20*log10(amax)
2408 * We store a table that is 4*20*log10(idx) - the extra 4 is to store or
2409 * maintain some extra precision.
2410 *
2411 * Values are stored in .5 db format capped at 127.
2412 */
2413 static void
mwl_node_getmimoinfo(const struct ieee80211_node * ni,struct ieee80211_mimo_info * mi)2414 mwl_node_getmimoinfo(const struct ieee80211_node *ni,
2415 struct ieee80211_mimo_info *mi)
2416 {
2417 #define CVT(_dst, _src) do { \
2418 (_dst) = rssi + ((logdbtbl[_src] - logdbtbl[rssi_max]) >> 2); \
2419 (_dst) = (_dst) > 64 ? 127 : ((_dst) << 1); \
2420 } while (0)
2421 static const int8_t logdbtbl[32] = {
2422 0, 0, 24, 38, 48, 56, 62, 68,
2423 72, 76, 80, 83, 86, 89, 92, 94,
2424 96, 98, 100, 102, 104, 106, 107, 109,
2425 110, 112, 113, 115, 116, 117, 118, 119
2426 };
2427 const struct mwl_node *mn = MWL_NODE_CONST(ni);
2428 uint8_t rssi = mn->mn_ai.rsvd1/2; /* XXX */
2429 uint32_t rssi_max;
2430
2431 rssi_max = mn->mn_ai.rssi_a;
2432 if (mn->mn_ai.rssi_b > rssi_max)
2433 rssi_max = mn->mn_ai.rssi_b;
2434 if (mn->mn_ai.rssi_c > rssi_max)
2435 rssi_max = mn->mn_ai.rssi_c;
2436
2437 CVT(mi->ch[0].rssi[0], mn->mn_ai.rssi_a);
2438 CVT(mi->ch[1].rssi[0], mn->mn_ai.rssi_b);
2439 CVT(mi->ch[2].rssi[0], mn->mn_ai.rssi_c);
2440
2441 mi->ch[0].noise[0] = mn->mn_ai.nf_a;
2442 mi->ch[1].noise[0] = mn->mn_ai.nf_b;
2443 mi->ch[2].noise[0] = mn->mn_ai.nf_c;
2444 #undef CVT
2445 }
2446
2447 static __inline void *
mwl_getrxdma(struct mwl_softc * sc)2448 mwl_getrxdma(struct mwl_softc *sc)
2449 {
2450 struct mwl_jumbo *buf;
2451 void *data;
2452
2453 /*
2454 * Allocate from jumbo pool.
2455 */
2456 MWL_RXFREE_LOCK(sc);
2457 buf = SLIST_FIRST(&sc->sc_rxfree);
2458 if (buf == NULL) {
2459 DPRINTF(sc, MWL_DEBUG_ANY,
2460 "%s: out of rx dma buffers\n", __func__);
2461 sc->sc_stats.mst_rx_nodmabuf++;
2462 data = NULL;
2463 } else {
2464 SLIST_REMOVE_HEAD(&sc->sc_rxfree, next);
2465 sc->sc_nrxfree--;
2466 data = MWL_JUMBO_BUF2DATA(buf);
2467 }
2468 MWL_RXFREE_UNLOCK(sc);
2469 return data;
2470 }
2471
2472 static __inline void
mwl_putrxdma(struct mwl_softc * sc,void * data)2473 mwl_putrxdma(struct mwl_softc *sc, void *data)
2474 {
2475 struct mwl_jumbo *buf;
2476
2477 /* XXX bounds check data */
2478 MWL_RXFREE_LOCK(sc);
2479 buf = MWL_JUMBO_DATA2BUF(data);
2480 SLIST_INSERT_HEAD(&sc->sc_rxfree, buf, next);
2481 sc->sc_nrxfree++;
2482 MWL_RXFREE_UNLOCK(sc);
2483 }
2484
2485 static int
mwl_rxbuf_init(struct mwl_softc * sc,struct mwl_rxbuf * bf)2486 mwl_rxbuf_init(struct mwl_softc *sc, struct mwl_rxbuf *bf)
2487 {
2488 struct mwl_rxdesc *ds;
2489
2490 ds = bf->bf_desc;
2491 if (bf->bf_data == NULL) {
2492 bf->bf_data = mwl_getrxdma(sc);
2493 if (bf->bf_data == NULL) {
2494 /* mark descriptor to be skipped */
2495 ds->RxControl = EAGLE_RXD_CTRL_OS_OWN;
2496 /* NB: don't need PREREAD */
2497 MWL_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREWRITE);
2498 sc->sc_stats.mst_rxbuf_failed++;
2499 return ENOMEM;
2500 }
2501 }
2502 /*
2503 * NB: DMA buffer contents is known to be unmodified
2504 * so there's no need to flush the data cache.
2505 */
2506
2507 /*
2508 * Setup descriptor.
2509 */
2510 ds->QosCtrl = 0;
2511 ds->RSSI = 0;
2512 ds->Status = EAGLE_RXD_STATUS_IDLE;
2513 ds->Channel = 0;
2514 ds->PktLen = htole16(MWL_AGGR_SIZE);
2515 ds->SQ2 = 0;
2516 ds->pPhysBuffData = htole32(MWL_JUMBO_DMA_ADDR(sc, bf->bf_data));
2517 /* NB: don't touch pPhysNext, set once */
2518 ds->RxControl = EAGLE_RXD_CTRL_DRIVER_OWN;
2519 MWL_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2520
2521 return 0;
2522 }
2523
2524 static void
mwl_ext_free(struct mbuf * m)2525 mwl_ext_free(struct mbuf *m)
2526 {
2527 struct mwl_softc *sc = m->m_ext.ext_arg1;
2528
2529 /* XXX bounds check data */
2530 mwl_putrxdma(sc, m->m_ext.ext_buf);
2531 /*
2532 * If we were previously blocked by a lack of rx dma buffers
2533 * check if we now have enough to restart rx interrupt handling.
2534 * NB: we know we are called at splvm which is above splnet.
2535 */
2536 if (sc->sc_rxblocked && sc->sc_nrxfree > mwl_rxdmalow) {
2537 sc->sc_rxblocked = 0;
2538 mwl_hal_intrset(sc->sc_mh, sc->sc_imask);
2539 }
2540 }
2541
2542 struct mwl_frame_bar {
2543 u_int8_t i_fc[2];
2544 u_int8_t i_dur[2];
2545 u_int8_t i_ra[IEEE80211_ADDR_LEN];
2546 u_int8_t i_ta[IEEE80211_ADDR_LEN];
2547 /* ctl, seq, FCS */
2548 } __packed;
2549
2550 /*
2551 * Like ieee80211_anyhdrsize, but handles BAR frames
2552 * specially so the logic below to piece the 802.11
2553 * header together works.
2554 */
2555 static __inline int
mwl_anyhdrsize(const void * data)2556 mwl_anyhdrsize(const void *data)
2557 {
2558 const struct ieee80211_frame *wh = data;
2559
2560 if ((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) {
2561 switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) {
2562 case IEEE80211_FC0_SUBTYPE_CTS:
2563 case IEEE80211_FC0_SUBTYPE_ACK:
2564 return sizeof(struct ieee80211_frame_ack);
2565 case IEEE80211_FC0_SUBTYPE_BAR:
2566 return sizeof(struct mwl_frame_bar);
2567 }
2568 return sizeof(struct ieee80211_frame_min);
2569 } else
2570 return ieee80211_hdrsize(data);
2571 }
2572
2573 static void
mwl_handlemicerror(struct ieee80211com * ic,const uint8_t * data)2574 mwl_handlemicerror(struct ieee80211com *ic, const uint8_t *data)
2575 {
2576 const struct ieee80211_frame *wh;
2577 struct ieee80211_node *ni;
2578
2579 wh = (const struct ieee80211_frame *)(data + sizeof(uint16_t));
2580 ni = ieee80211_find_rxnode(ic, (const struct ieee80211_frame_min *) wh);
2581 if (ni != NULL) {
2582 ieee80211_notify_michael_failure(ni->ni_vap, wh, 0);
2583 ieee80211_free_node(ni);
2584 }
2585 }
2586
2587 /*
2588 * Convert hardware signal strength to rssi. The value
2589 * provided by the device has the noise floor added in;
2590 * we need to compensate for this but we don't have that
2591 * so we use a fixed value.
2592 *
2593 * The offset of 8 is good for both 2.4 and 5GHz. The LNA
2594 * offset is already set as part of the initial gain. This
2595 * will give at least +/- 3dB for 2.4GHz and +/- 5dB for 5GHz.
2596 */
2597 static __inline int
cvtrssi(uint8_t ssi)2598 cvtrssi(uint8_t ssi)
2599 {
2600 int rssi = (int) ssi + 8;
2601 /* XXX hack guess until we have a real noise floor */
2602 rssi = 2*(87 - rssi); /* NB: .5 dBm units */
2603 return (rssi < 0 ? 0 : rssi > 127 ? 127 : rssi);
2604 }
2605
2606 static void
mwl_rx_proc(void * arg,int npending)2607 mwl_rx_proc(void *arg, int npending)
2608 {
2609 struct epoch_tracker et;
2610 struct mwl_softc *sc = arg;
2611 struct ieee80211com *ic = &sc->sc_ic;
2612 struct mwl_rxbuf *bf;
2613 struct mwl_rxdesc *ds;
2614 struct mbuf *m;
2615 struct ieee80211_qosframe *wh;
2616 struct ieee80211_node *ni;
2617 struct mwl_node *mn;
2618 int off, len, hdrlen, pktlen, rssi, ntodo;
2619 uint8_t *data, status;
2620 void *newdata;
2621 int16_t nf;
2622
2623 DPRINTF(sc, MWL_DEBUG_RX_PROC, "%s: pending %u rdptr 0x%x wrptr 0x%x\n",
2624 __func__, npending, RD4(sc, sc->sc_hwspecs.rxDescRead),
2625 RD4(sc, sc->sc_hwspecs.rxDescWrite));
2626 nf = -96; /* XXX */
2627 bf = sc->sc_rxnext;
2628 for (ntodo = mwl_rxquota; ntodo > 0; ntodo--) {
2629 if (bf == NULL)
2630 bf = STAILQ_FIRST(&sc->sc_rxbuf);
2631 ds = bf->bf_desc;
2632 data = bf->bf_data;
2633 if (data == NULL) {
2634 /*
2635 * If data allocation failed previously there
2636 * will be no buffer; try again to re-populate it.
2637 * Note the firmware will not advance to the next
2638 * descriptor with a dma buffer so we must mimic
2639 * this or we'll get out of sync.
2640 */
2641 DPRINTF(sc, MWL_DEBUG_ANY,
2642 "%s: rx buf w/o dma memory\n", __func__);
2643 (void) mwl_rxbuf_init(sc, bf);
2644 sc->sc_stats.mst_rx_dmabufmissing++;
2645 break;
2646 }
2647 MWL_RXDESC_SYNC(sc, ds,
2648 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
2649 if (ds->RxControl != EAGLE_RXD_CTRL_DMA_OWN)
2650 break;
2651 #ifdef MWL_DEBUG
2652 if (sc->sc_debug & MWL_DEBUG_RECV_DESC)
2653 mwl_printrxbuf(bf, 0);
2654 #endif
2655 status = ds->Status;
2656 if (status & EAGLE_RXD_STATUS_DECRYPT_ERR_MASK) {
2657 counter_u64_add(ic->ic_ierrors, 1);
2658 sc->sc_stats.mst_rx_crypto++;
2659 /*
2660 * NB: Check EAGLE_RXD_STATUS_GENERAL_DECRYPT_ERR
2661 * for backwards compatibility.
2662 */
2663 if (status != EAGLE_RXD_STATUS_GENERAL_DECRYPT_ERR &&
2664 (status & EAGLE_RXD_STATUS_TKIP_MIC_DECRYPT_ERR)) {
2665 /*
2666 * MIC error, notify upper layers.
2667 */
2668 bus_dmamap_sync(sc->sc_rxdmat, sc->sc_rxmap,
2669 BUS_DMASYNC_POSTREAD);
2670 mwl_handlemicerror(ic, data);
2671 sc->sc_stats.mst_rx_tkipmic++;
2672 }
2673 /* XXX too painful to tap packets */
2674 goto rx_next;
2675 }
2676 /*
2677 * Sync the data buffer.
2678 */
2679 len = le16toh(ds->PktLen);
2680 bus_dmamap_sync(sc->sc_rxdmat, sc->sc_rxmap, BUS_DMASYNC_POSTREAD);
2681 /*
2682 * The 802.11 header is provided all or in part at the front;
2683 * use it to calculate the true size of the header that we'll
2684 * construct below. We use this to figure out where to copy
2685 * payload prior to constructing the header.
2686 */
2687 hdrlen = mwl_anyhdrsize(data + sizeof(uint16_t));
2688 off = sizeof(uint16_t) + sizeof(struct ieee80211_frame_addr4);
2689
2690 /* calculate rssi early so we can re-use for each aggregate */
2691 rssi = cvtrssi(ds->RSSI);
2692
2693 pktlen = hdrlen + (len - off);
2694 /*
2695 * NB: we know our frame is at least as large as
2696 * IEEE80211_MIN_LEN because there is a 4-address
2697 * frame at the front. Hence there's no need to
2698 * vet the packet length. If the frame in fact
2699 * is too small it should be discarded at the
2700 * net80211 layer.
2701 */
2702
2703 /*
2704 * Attach dma buffer to an mbuf. We tried
2705 * doing this based on the packet size (i.e.
2706 * copying small packets) but it turns out to
2707 * be a net loss. The tradeoff might be system
2708 * dependent (cache architecture is important).
2709 */
2710 MGETHDR(m, M_NOWAIT, MT_DATA);
2711 if (m == NULL) {
2712 DPRINTF(sc, MWL_DEBUG_ANY,
2713 "%s: no rx mbuf\n", __func__);
2714 sc->sc_stats.mst_rx_nombuf++;
2715 goto rx_next;
2716 }
2717 /*
2718 * Acquire the replacement dma buffer before
2719 * processing the frame. If we're out of dma
2720 * buffers we disable rx interrupts and wait
2721 * for the free pool to reach mlw_rxdmalow buffers
2722 * before starting to do work again. If the firmware
2723 * runs out of descriptors then it will toss frames
2724 * which is better than our doing it as that can
2725 * starve our processing. It is also important that
2726 * we always process rx'd frames in case they are
2727 * A-MPDU as otherwise the host's view of the BA
2728 * window may get out of sync with the firmware.
2729 */
2730 newdata = mwl_getrxdma(sc);
2731 if (newdata == NULL) {
2732 /* NB: stat+msg in mwl_getrxdma */
2733 m_free(m);
2734 /* disable RX interrupt and mark state */
2735 mwl_hal_intrset(sc->sc_mh,
2736 sc->sc_imask &~ MACREG_A2HRIC_BIT_RX_RDY);
2737 sc->sc_rxblocked = 1;
2738 ieee80211_drain(ic);
2739 /* XXX check rxblocked and immediately start again? */
2740 goto rx_stop;
2741 }
2742 bf->bf_data = newdata;
2743 /*
2744 * Attach the dma buffer to the mbuf;
2745 * mwl_rxbuf_init will re-setup the rx
2746 * descriptor using the replacement dma
2747 * buffer we just installed above.
2748 */
2749 m_extadd(m, data, MWL_AGGR_SIZE, mwl_ext_free, sc, NULL, 0,
2750 EXT_NET_DRV);
2751 m->m_data += off - hdrlen;
2752 m->m_pkthdr.len = m->m_len = pktlen;
2753 /* NB: dma buffer assumed read-only */
2754
2755 /*
2756 * Piece 802.11 header together.
2757 */
2758 wh = mtod(m, struct ieee80211_qosframe *);
2759 /* NB: don't need to do this sometimes but ... */
2760 /* XXX special case so we can memcpy after m_devget? */
2761 ovbcopy(data + sizeof(uint16_t), wh, hdrlen);
2762 if (IEEE80211_QOS_HAS_SEQ(wh))
2763 *(uint16_t *)ieee80211_getqos(wh) = ds->QosCtrl;
2764 /*
2765 * The f/w strips WEP header but doesn't clear
2766 * the WEP bit; mark the packet with M_WEP so
2767 * net80211 will treat the data as decrypted.
2768 * While here also clear the PWR_MGT bit since
2769 * power save is handled by the firmware and
2770 * passing this up will potentially cause the
2771 * upper layer to put a station in power save
2772 * (except when configured with MWL_HOST_PS_SUPPORT).
2773 */
2774 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED)
2775 m->m_flags |= M_WEP;
2776 #ifdef MWL_HOST_PS_SUPPORT
2777 wh->i_fc[1] &= ~IEEE80211_FC1_PROTECTED;
2778 #else
2779 wh->i_fc[1] &= ~(IEEE80211_FC1_PROTECTED |
2780 IEEE80211_FC1_PWR_MGT);
2781 #endif
2782
2783 if (ieee80211_radiotap_active(ic)) {
2784 struct mwl_rx_radiotap_header *tap = &sc->sc_rx_th;
2785
2786 tap->wr_flags = 0;
2787 tap->wr_rate = ds->Rate;
2788 tap->wr_antsignal = rssi + nf;
2789 tap->wr_antnoise = nf;
2790 }
2791 if (IFF_DUMPPKTS_RECV(sc, wh)) {
2792 ieee80211_dump_pkt(ic, mtod(m, caddr_t),
2793 len, ds->Rate, rssi);
2794 }
2795 /* dispatch */
2796 ni = ieee80211_find_rxnode(ic,
2797 (const struct ieee80211_frame_min *) wh);
2798
2799 NET_EPOCH_ENTER(et);
2800 if (ni != NULL) {
2801 mn = MWL_NODE(ni);
2802 #ifdef MWL_ANT_INFO_SUPPORT
2803 mn->mn_ai.rssi_a = ds->ai.rssi_a;
2804 mn->mn_ai.rssi_b = ds->ai.rssi_b;
2805 mn->mn_ai.rssi_c = ds->ai.rssi_c;
2806 mn->mn_ai.rsvd1 = rssi;
2807 #endif
2808 /* tag AMPDU aggregates for reorder processing */
2809 if (ni->ni_flags & IEEE80211_NODE_HT)
2810 m->m_flags |= M_AMPDU;
2811 (void) ieee80211_input(ni, m, rssi, nf);
2812 ieee80211_free_node(ni);
2813 } else
2814 (void) ieee80211_input_all(ic, m, rssi, nf);
2815 NET_EPOCH_EXIT(et);
2816 rx_next:
2817 /* NB: ignore ENOMEM so we process more descriptors */
2818 (void) mwl_rxbuf_init(sc, bf);
2819 bf = STAILQ_NEXT(bf, bf_list);
2820 }
2821 rx_stop:
2822 sc->sc_rxnext = bf;
2823
2824 if (mbufq_first(&sc->sc_snd) != NULL) {
2825 /* NB: kick fw; the tx thread may have been preempted */
2826 mwl_hal_txstart(sc->sc_mh, 0);
2827 mwl_start(sc);
2828 }
2829 }
2830
2831 static void
mwl_txq_init(struct mwl_softc * sc,struct mwl_txq * txq,int qnum)2832 mwl_txq_init(struct mwl_softc *sc, struct mwl_txq *txq, int qnum)
2833 {
2834 struct mwl_txbuf *bf, *bn;
2835 struct mwl_txdesc *ds;
2836
2837 MWL_TXQ_LOCK_INIT(sc, txq);
2838 txq->qnum = qnum;
2839 txq->txpri = 0; /* XXX */
2840 #if 0
2841 /* NB: q setup by mwl_txdma_setup XXX */
2842 STAILQ_INIT(&txq->free);
2843 #endif
2844 STAILQ_FOREACH(bf, &txq->free, bf_list) {
2845 bf->bf_txq = txq;
2846
2847 ds = bf->bf_desc;
2848 bn = STAILQ_NEXT(bf, bf_list);
2849 if (bn == NULL)
2850 bn = STAILQ_FIRST(&txq->free);
2851 ds->pPhysNext = htole32(bn->bf_daddr);
2852 }
2853 STAILQ_INIT(&txq->active);
2854 }
2855
2856 /*
2857 * Setup a hardware data transmit queue for the specified
2858 * access control. We record the mapping from ac's
2859 * to h/w queues for use by mwl_tx_start.
2860 */
2861 static int
mwl_tx_setup(struct mwl_softc * sc,int ac,int mvtype)2862 mwl_tx_setup(struct mwl_softc *sc, int ac, int mvtype)
2863 {
2864 struct mwl_txq *txq;
2865
2866 if (ac >= nitems(sc->sc_ac2q)) {
2867 device_printf(sc->sc_dev, "AC %u out of range, max %zu!\n",
2868 ac, nitems(sc->sc_ac2q));
2869 return 0;
2870 }
2871 if (mvtype >= MWL_NUM_TX_QUEUES) {
2872 device_printf(sc->sc_dev, "mvtype %u out of range, max %u!\n",
2873 mvtype, MWL_NUM_TX_QUEUES);
2874 return 0;
2875 }
2876 txq = &sc->sc_txq[mvtype];
2877 mwl_txq_init(sc, txq, mvtype);
2878 sc->sc_ac2q[ac] = txq;
2879 return 1;
2880 }
2881
2882 /*
2883 * Update WME parameters for a transmit queue.
2884 */
2885 static int
mwl_txq_update(struct mwl_softc * sc,int ac)2886 mwl_txq_update(struct mwl_softc *sc, int ac)
2887 {
2888 #define MWL_EXPONENT_TO_VALUE(v) ((1<<v)-1)
2889 struct ieee80211com *ic = &sc->sc_ic;
2890 struct chanAccParams chp;
2891 struct mwl_txq *txq = sc->sc_ac2q[ac];
2892 struct wmeParams *wmep;
2893 struct mwl_hal *mh = sc->sc_mh;
2894 int aifs, cwmin, cwmax, txoplim;
2895
2896 ieee80211_wme_ic_getparams(ic, &chp);
2897 wmep = &chp.cap_wmeParams[ac];
2898
2899 aifs = wmep->wmep_aifsn;
2900 /* XXX in sta mode need to pass log values for cwmin/max */
2901 cwmin = MWL_EXPONENT_TO_VALUE(wmep->wmep_logcwmin);
2902 cwmax = MWL_EXPONENT_TO_VALUE(wmep->wmep_logcwmax);
2903 txoplim = wmep->wmep_txopLimit; /* NB: units of 32us */
2904
2905 if (mwl_hal_setedcaparams(mh, txq->qnum, cwmin, cwmax, aifs, txoplim)) {
2906 device_printf(sc->sc_dev, "unable to update hardware queue "
2907 "parameters for %s traffic!\n",
2908 ieee80211_wme_acnames[ac]);
2909 return 0;
2910 }
2911 return 1;
2912 #undef MWL_EXPONENT_TO_VALUE
2913 }
2914
2915 /*
2916 * Callback from the 802.11 layer to update WME parameters.
2917 */
2918 static int
mwl_wme_update(struct ieee80211com * ic)2919 mwl_wme_update(struct ieee80211com *ic)
2920 {
2921 struct mwl_softc *sc = ic->ic_softc;
2922
2923 return !mwl_txq_update(sc, WME_AC_BE) ||
2924 !mwl_txq_update(sc, WME_AC_BK) ||
2925 !mwl_txq_update(sc, WME_AC_VI) ||
2926 !mwl_txq_update(sc, WME_AC_VO) ? EIO : 0;
2927 }
2928
2929 /*
2930 * Reclaim resources for a setup queue.
2931 */
2932 static void
mwl_tx_cleanupq(struct mwl_softc * sc,struct mwl_txq * txq)2933 mwl_tx_cleanupq(struct mwl_softc *sc, struct mwl_txq *txq)
2934 {
2935 /* XXX hal work? */
2936 MWL_TXQ_LOCK_DESTROY(txq);
2937 }
2938
2939 /*
2940 * Reclaim all tx queue resources.
2941 */
2942 static void
mwl_tx_cleanup(struct mwl_softc * sc)2943 mwl_tx_cleanup(struct mwl_softc *sc)
2944 {
2945 int i;
2946
2947 for (i = 0; i < MWL_NUM_TX_QUEUES; i++)
2948 mwl_tx_cleanupq(sc, &sc->sc_txq[i]);
2949 }
2950
2951 static int
mwl_tx_dmasetup(struct mwl_softc * sc,struct mwl_txbuf * bf,struct mbuf * m0)2952 mwl_tx_dmasetup(struct mwl_softc *sc, struct mwl_txbuf *bf, struct mbuf *m0)
2953 {
2954 struct mbuf *m;
2955 int error;
2956
2957 /*
2958 * Load the DMA map so any coalescing is done. This
2959 * also calculates the number of descriptors we need.
2960 */
2961 error = bus_dmamap_load_mbuf_sg(sc->sc_dmat, bf->bf_dmamap, m0,
2962 bf->bf_segs, &bf->bf_nseg,
2963 BUS_DMA_NOWAIT);
2964 if (error == EFBIG) {
2965 /* XXX packet requires too many descriptors */
2966 bf->bf_nseg = MWL_TXDESC+1;
2967 } else if (error != 0) {
2968 sc->sc_stats.mst_tx_busdma++;
2969 m_freem(m0);
2970 return error;
2971 }
2972 /*
2973 * Discard null packets and check for packets that
2974 * require too many TX descriptors. We try to convert
2975 * the latter to a cluster.
2976 */
2977 if (error == EFBIG) { /* too many desc's, linearize */
2978 sc->sc_stats.mst_tx_linear++;
2979 #if MWL_TXDESC > 1
2980 m = m_collapse(m0, M_NOWAIT, MWL_TXDESC);
2981 #else
2982 m = m_defrag(m0, M_NOWAIT);
2983 #endif
2984 if (m == NULL) {
2985 m_freem(m0);
2986 sc->sc_stats.mst_tx_nombuf++;
2987 return ENOMEM;
2988 }
2989 m0 = m;
2990 error = bus_dmamap_load_mbuf_sg(sc->sc_dmat, bf->bf_dmamap, m0,
2991 bf->bf_segs, &bf->bf_nseg,
2992 BUS_DMA_NOWAIT);
2993 if (error != 0) {
2994 sc->sc_stats.mst_tx_busdma++;
2995 m_freem(m0);
2996 return error;
2997 }
2998 KASSERT(bf->bf_nseg <= MWL_TXDESC,
2999 ("too many segments after defrag; nseg %u", bf->bf_nseg));
3000 } else if (bf->bf_nseg == 0) { /* null packet, discard */
3001 sc->sc_stats.mst_tx_nodata++;
3002 m_freem(m0);
3003 return EIO;
3004 }
3005 DPRINTF(sc, MWL_DEBUG_XMIT, "%s: m %p len %u\n",
3006 __func__, m0, m0->m_pkthdr.len);
3007 bus_dmamap_sync(sc->sc_dmat, bf->bf_dmamap, BUS_DMASYNC_PREWRITE);
3008 bf->bf_m = m0;
3009
3010 return 0;
3011 }
3012
3013 static __inline int
mwl_cvtlegacyrate(int rate)3014 mwl_cvtlegacyrate(int rate)
3015 {
3016 switch (rate) {
3017 case 2: return 0;
3018 case 4: return 1;
3019 case 11: return 2;
3020 case 22: return 3;
3021 case 44: return 4;
3022 case 12: return 5;
3023 case 18: return 6;
3024 case 24: return 7;
3025 case 36: return 8;
3026 case 48: return 9;
3027 case 72: return 10;
3028 case 96: return 11;
3029 case 108:return 12;
3030 }
3031 return 0;
3032 }
3033
3034 /*
3035 * Calculate fixed tx rate information per client state;
3036 * this value is suitable for writing to the Format field
3037 * of a tx descriptor.
3038 */
3039 static uint16_t
mwl_calcformat(uint8_t rate,const struct ieee80211_node * ni)3040 mwl_calcformat(uint8_t rate, const struct ieee80211_node *ni)
3041 {
3042 uint16_t fmt;
3043
3044 fmt = _IEEE80211_SHIFTMASK(3, EAGLE_TXD_ANTENNA)
3045 | (IEEE80211_IS_CHAN_HT40D(ni->ni_chan) ?
3046 EAGLE_TXD_EXTCHAN_LO : EAGLE_TXD_EXTCHAN_HI);
3047 if (rate & IEEE80211_RATE_MCS) { /* HT MCS */
3048 fmt |= EAGLE_TXD_FORMAT_HT
3049 /* NB: 0x80 implicitly stripped from ucastrate */
3050 | _IEEE80211_SHIFTMASK(rate, EAGLE_TXD_RATE);
3051 /* XXX short/long GI may be wrong; re-check */
3052 if (IEEE80211_IS_CHAN_HT40(ni->ni_chan)) {
3053 fmt |= EAGLE_TXD_CHW_40
3054 | (ni->ni_htcap & IEEE80211_HTCAP_SHORTGI40 ?
3055 EAGLE_TXD_GI_SHORT : EAGLE_TXD_GI_LONG);
3056 } else {
3057 fmt |= EAGLE_TXD_CHW_20
3058 | (ni->ni_htcap & IEEE80211_HTCAP_SHORTGI20 ?
3059 EAGLE_TXD_GI_SHORT : EAGLE_TXD_GI_LONG);
3060 }
3061 } else { /* legacy rate */
3062 fmt |= EAGLE_TXD_FORMAT_LEGACY
3063 | _IEEE80211_SHIFTMASK(mwl_cvtlegacyrate(rate),
3064 EAGLE_TXD_RATE)
3065 | EAGLE_TXD_CHW_20
3066 /* XXX iv_flags & IEEE80211_F_SHPREAMBLE? */
3067 | (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE ?
3068 EAGLE_TXD_PREAMBLE_SHORT : EAGLE_TXD_PREAMBLE_LONG);
3069 }
3070 return fmt;
3071 }
3072
3073 static int
mwl_tx_start(struct mwl_softc * sc,struct ieee80211_node * ni,struct mwl_txbuf * bf,struct mbuf * m0)3074 mwl_tx_start(struct mwl_softc *sc, struct ieee80211_node *ni, struct mwl_txbuf *bf,
3075 struct mbuf *m0)
3076 {
3077 struct ieee80211com *ic = &sc->sc_ic;
3078 struct ieee80211vap *vap = ni->ni_vap;
3079 int error, iswep, ismcast;
3080 int hdrlen, copyhdrlen, pktlen;
3081 struct mwl_txdesc *ds;
3082 struct mwl_txq *txq;
3083 struct ieee80211_frame *wh;
3084 struct mwltxrec *tr;
3085 struct mwl_node *mn;
3086 uint16_t qos;
3087 #if MWL_TXDESC > 1
3088 int i;
3089 #endif
3090
3091 wh = mtod(m0, struct ieee80211_frame *);
3092 iswep = wh->i_fc[1] & IEEE80211_FC1_PROTECTED;
3093 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
3094 hdrlen = ieee80211_anyhdrsize(wh);
3095 copyhdrlen = hdrlen;
3096 pktlen = m0->m_pkthdr.len;
3097 if (IEEE80211_QOS_HAS_SEQ(wh)) {
3098 qos = *(uint16_t *)ieee80211_getqos(wh);
3099 if (IEEE80211_IS_DSTODS(wh))
3100 copyhdrlen -= sizeof(qos);
3101 } else
3102 qos = 0;
3103
3104 if (iswep) {
3105 const struct ieee80211_cipher *cip;
3106 struct ieee80211_key *k;
3107
3108 /*
3109 * Construct the 802.11 header+trailer for an encrypted
3110 * frame. The only reason this can fail is because of an
3111 * unknown or unsupported cipher/key type.
3112 *
3113 * NB: we do this even though the firmware will ignore
3114 * what we've done for WEP and TKIP as we need the
3115 * ExtIV filled in for CCMP and this also adjusts
3116 * the headers which simplifies our work below.
3117 */
3118 k = ieee80211_crypto_encap(ni, m0);
3119 if (k == NULL) {
3120 /*
3121 * This can happen when the key is yanked after the
3122 * frame was queued. Just discard the frame; the
3123 * 802.11 layer counts failures and provides
3124 * debugging/diagnostics.
3125 */
3126 m_freem(m0);
3127 return EIO;
3128 }
3129 /*
3130 * Adjust the packet length for the crypto additions
3131 * done during encap and any other bits that the f/w
3132 * will add later on.
3133 */
3134 cip = k->wk_cipher;
3135 pktlen += cip->ic_header + cip->ic_miclen + cip->ic_trailer;
3136
3137 /* packet header may have moved, reset our local pointer */
3138 wh = mtod(m0, struct ieee80211_frame *);
3139 }
3140
3141 if (ieee80211_radiotap_active_vap(vap)) {
3142 sc->sc_tx_th.wt_flags = 0; /* XXX */
3143 if (iswep)
3144 sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3145 #if 0
3146 sc->sc_tx_th.wt_rate = ds->DataRate;
3147 #endif
3148 sc->sc_tx_th.wt_txpower = ni->ni_txpower;
3149 sc->sc_tx_th.wt_antenna = sc->sc_txantenna;
3150
3151 ieee80211_radiotap_tx(vap, m0);
3152 }
3153 /*
3154 * Copy up/down the 802.11 header; the firmware requires
3155 * we present a 2-byte payload length followed by a
3156 * 4-address header (w/o QoS), followed (optionally) by
3157 * any WEP/ExtIV header (but only filled in for CCMP).
3158 * We are assured the mbuf has sufficient headroom to
3159 * prepend in-place by the setup of ic_headroom in
3160 * mwl_attach.
3161 */
3162 if (hdrlen < sizeof(struct mwltxrec)) {
3163 const int space = sizeof(struct mwltxrec) - hdrlen;
3164 if (M_LEADINGSPACE(m0) < space) {
3165 /* NB: should never happen */
3166 device_printf(sc->sc_dev,
3167 "not enough headroom, need %d found %zd, "
3168 "m_flags 0x%x m_len %d\n",
3169 space, M_LEADINGSPACE(m0), m0->m_flags, m0->m_len);
3170 ieee80211_dump_pkt(ic,
3171 mtod(m0, const uint8_t *), m0->m_len, 0, -1);
3172 m_freem(m0);
3173 sc->sc_stats.mst_tx_noheadroom++;
3174 return EIO;
3175 }
3176 M_PREPEND(m0, space, M_NOWAIT);
3177 }
3178 tr = mtod(m0, struct mwltxrec *);
3179 if (wh != (struct ieee80211_frame *) &tr->wh)
3180 ovbcopy(wh, &tr->wh, hdrlen);
3181 /*
3182 * Note: the "firmware length" is actually the length
3183 * of the fully formed "802.11 payload". That is, it's
3184 * everything except for the 802.11 header. In particular
3185 * this includes all crypto material including the MIC!
3186 */
3187 tr->fwlen = htole16(pktlen - hdrlen);
3188
3189 /*
3190 * Load the DMA map so any coalescing is done. This
3191 * also calculates the number of descriptors we need.
3192 */
3193 error = mwl_tx_dmasetup(sc, bf, m0);
3194 if (error != 0) {
3195 /* NB: stat collected in mwl_tx_dmasetup */
3196 DPRINTF(sc, MWL_DEBUG_XMIT,
3197 "%s: unable to setup dma\n", __func__);
3198 return error;
3199 }
3200 bf->bf_node = ni; /* NB: held reference */
3201 m0 = bf->bf_m; /* NB: may have changed */
3202 tr = mtod(m0, struct mwltxrec *);
3203 wh = (struct ieee80211_frame *)&tr->wh;
3204
3205 /*
3206 * Formulate tx descriptor.
3207 */
3208 ds = bf->bf_desc;
3209 txq = bf->bf_txq;
3210
3211 ds->QosCtrl = qos; /* NB: already little-endian */
3212 #if MWL_TXDESC == 1
3213 /*
3214 * NB: multiframes should be zero because the descriptors
3215 * are initialized to zero. This should handle the case
3216 * where the driver is built with MWL_TXDESC=1 but we are
3217 * using firmware with multi-segment support.
3218 */
3219 ds->PktPtr = htole32(bf->bf_segs[0].ds_addr);
3220 ds->PktLen = htole16(bf->bf_segs[0].ds_len);
3221 #else
3222 ds->multiframes = htole32(bf->bf_nseg);
3223 ds->PktLen = htole16(m0->m_pkthdr.len);
3224 for (i = 0; i < bf->bf_nseg; i++) {
3225 ds->PktPtrArray[i] = htole32(bf->bf_segs[i].ds_addr);
3226 ds->PktLenArray[i] = htole16(bf->bf_segs[i].ds_len);
3227 }
3228 #endif
3229 /* NB: pPhysNext, DataRate, and SapPktInfo setup once, don't touch */
3230 ds->Format = 0;
3231 ds->pad = 0;
3232 ds->ack_wcb_addr = 0;
3233
3234 mn = MWL_NODE(ni);
3235 /*
3236 * Select transmit rate.
3237 */
3238 switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) {
3239 case IEEE80211_FC0_TYPE_MGT:
3240 sc->sc_stats.mst_tx_mgmt++;
3241 /* fall thru... */
3242 case IEEE80211_FC0_TYPE_CTL:
3243 /* NB: assign to BE q to avoid bursting */
3244 ds->TxPriority = MWL_WME_AC_BE;
3245 break;
3246 case IEEE80211_FC0_TYPE_DATA:
3247 if (!ismcast) {
3248 const struct ieee80211_txparam *tp = ni->ni_txparms;
3249 /*
3250 * EAPOL frames get forced to a fixed rate and w/o
3251 * aggregation; otherwise check for any fixed rate
3252 * for the client (may depend on association state).
3253 */
3254 if (m0->m_flags & M_EAPOL) {
3255 const struct mwl_vap *mvp = MWL_VAP_CONST(vap);
3256 ds->Format = mvp->mv_eapolformat;
3257 ds->pad = htole16(
3258 EAGLE_TXD_FIXED_RATE | EAGLE_TXD_DONT_AGGR);
3259 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) {
3260 /* XXX pre-calculate per node */
3261 ds->Format = htole16(
3262 mwl_calcformat(tp->ucastrate, ni));
3263 ds->pad = htole16(EAGLE_TXD_FIXED_RATE);
3264 }
3265 /* NB: EAPOL frames will never have qos set */
3266 if (qos == 0)
3267 ds->TxPriority = txq->qnum;
3268 #if MWL_MAXBA > 3
3269 else if (mwl_bastream_match(&mn->mn_ba[3], qos))
3270 ds->TxPriority = mn->mn_ba[3].txq;
3271 #endif
3272 #if MWL_MAXBA > 2
3273 else if (mwl_bastream_match(&mn->mn_ba[2], qos))
3274 ds->TxPriority = mn->mn_ba[2].txq;
3275 #endif
3276 #if MWL_MAXBA > 1
3277 else if (mwl_bastream_match(&mn->mn_ba[1], qos))
3278 ds->TxPriority = mn->mn_ba[1].txq;
3279 #endif
3280 #if MWL_MAXBA > 0
3281 else if (mwl_bastream_match(&mn->mn_ba[0], qos))
3282 ds->TxPriority = mn->mn_ba[0].txq;
3283 #endif
3284 else
3285 ds->TxPriority = txq->qnum;
3286 } else
3287 ds->TxPriority = txq->qnum;
3288 break;
3289 default:
3290 device_printf(sc->sc_dev, "bogus frame type 0x%x (%s)\n",
3291 wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK, __func__);
3292 sc->sc_stats.mst_tx_badframetype++;
3293 m_freem(m0);
3294 return EIO;
3295 }
3296
3297 if (IFF_DUMPPKTS_XMIT(sc))
3298 ieee80211_dump_pkt(ic,
3299 mtod(m0, const uint8_t *)+sizeof(uint16_t),
3300 m0->m_len - sizeof(uint16_t), ds->DataRate, -1);
3301
3302 MWL_TXQ_LOCK(txq);
3303 ds->Status = htole32(EAGLE_TXD_STATUS_FW_OWNED);
3304 STAILQ_INSERT_TAIL(&txq->active, bf, bf_list);
3305 MWL_TXDESC_SYNC(txq, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3306
3307 sc->sc_tx_timer = 5;
3308 MWL_TXQ_UNLOCK(txq);
3309
3310 return 0;
3311 }
3312
3313 static __inline int
mwl_cvtlegacyrix(int rix)3314 mwl_cvtlegacyrix(int rix)
3315 {
3316 static const int ieeerates[] =
3317 { 2, 4, 11, 22, 44, 12, 18, 24, 36, 48, 72, 96, 108 };
3318 return (rix < nitems(ieeerates) ? ieeerates[rix] : 0);
3319 }
3320
3321 /*
3322 * Process completed xmit descriptors from the specified queue.
3323 */
3324 static int
mwl_tx_processq(struct mwl_softc * sc,struct mwl_txq * txq)3325 mwl_tx_processq(struct mwl_softc *sc, struct mwl_txq *txq)
3326 {
3327 #define EAGLE_TXD_STATUS_MCAST \
3328 (EAGLE_TXD_STATUS_MULTICAST_TX | EAGLE_TXD_STATUS_BROADCAST_TX)
3329 struct ieee80211com *ic = &sc->sc_ic;
3330 struct mwl_txbuf *bf;
3331 struct mwl_txdesc *ds;
3332 struct ieee80211_node *ni;
3333 struct mwl_node *an;
3334 int nreaped;
3335 uint32_t status;
3336
3337 DPRINTF(sc, MWL_DEBUG_TX_PROC, "%s: tx queue %u\n", __func__, txq->qnum);
3338 for (nreaped = 0;; nreaped++) {
3339 MWL_TXQ_LOCK(txq);
3340 bf = STAILQ_FIRST(&txq->active);
3341 if (bf == NULL) {
3342 MWL_TXQ_UNLOCK(txq);
3343 break;
3344 }
3345 ds = bf->bf_desc;
3346 MWL_TXDESC_SYNC(txq, ds,
3347 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3348 if (ds->Status & htole32(EAGLE_TXD_STATUS_FW_OWNED)) {
3349 MWL_TXQ_UNLOCK(txq);
3350 break;
3351 }
3352 STAILQ_REMOVE_HEAD(&txq->active, bf_list);
3353 MWL_TXQ_UNLOCK(txq);
3354
3355 #ifdef MWL_DEBUG
3356 if (sc->sc_debug & MWL_DEBUG_XMIT_DESC)
3357 mwl_printtxbuf(bf, txq->qnum, nreaped);
3358 #endif
3359 ni = bf->bf_node;
3360 if (ni != NULL) {
3361 an = MWL_NODE(ni);
3362 status = le32toh(ds->Status);
3363 if (status & EAGLE_TXD_STATUS_OK) {
3364 uint16_t Format = le16toh(ds->Format);
3365 uint8_t txant = _IEEE80211_MASKSHIFT(Format,
3366 EAGLE_TXD_ANTENNA);
3367
3368 sc->sc_stats.mst_ant_tx[txant]++;
3369 if (status & EAGLE_TXD_STATUS_OK_RETRY)
3370 sc->sc_stats.mst_tx_retries++;
3371 if (status & EAGLE_TXD_STATUS_OK_MORE_RETRY)
3372 sc->sc_stats.mst_tx_mretries++;
3373 if (txq->qnum >= MWL_WME_AC_VO)
3374 ic->ic_wme.wme_hipri_traffic++;
3375 ni->ni_txrate = _IEEE80211_MASKSHIFT(Format,
3376 EAGLE_TXD_RATE);
3377 if ((Format & EAGLE_TXD_FORMAT_HT) == 0) {
3378 ni->ni_txrate = mwl_cvtlegacyrix(
3379 ni->ni_txrate);
3380 } else
3381 ni->ni_txrate |= IEEE80211_RATE_MCS;
3382 sc->sc_stats.mst_tx_rate = ni->ni_txrate;
3383 } else {
3384 if (status & EAGLE_TXD_STATUS_FAILED_LINK_ERROR)
3385 sc->sc_stats.mst_tx_linkerror++;
3386 if (status & EAGLE_TXD_STATUS_FAILED_XRETRY)
3387 sc->sc_stats.mst_tx_xretries++;
3388 if (status & EAGLE_TXD_STATUS_FAILED_AGING)
3389 sc->sc_stats.mst_tx_aging++;
3390 if (bf->bf_m->m_flags & M_FF)
3391 sc->sc_stats.mst_ff_txerr++;
3392 }
3393 if (bf->bf_m->m_flags & M_TXCB)
3394 /* XXX strip fw len in case header inspected */
3395 m_adj(bf->bf_m, sizeof(uint16_t));
3396 ieee80211_tx_complete(ni, bf->bf_m,
3397 (status & EAGLE_TXD_STATUS_OK) == 0);
3398 } else
3399 m_freem(bf->bf_m);
3400 ds->Status = htole32(EAGLE_TXD_STATUS_IDLE);
3401
3402 bus_dmamap_sync(sc->sc_dmat, bf->bf_dmamap,
3403 BUS_DMASYNC_POSTWRITE);
3404 bus_dmamap_unload(sc->sc_dmat, bf->bf_dmamap);
3405
3406 mwl_puttxbuf_tail(txq, bf);
3407 }
3408 return nreaped;
3409 #undef EAGLE_TXD_STATUS_MCAST
3410 }
3411
3412 /*
3413 * Deferred processing of transmit interrupt; special-cased
3414 * for four hardware queues, 0-3.
3415 */
3416 static void
mwl_tx_proc(void * arg,int npending)3417 mwl_tx_proc(void *arg, int npending)
3418 {
3419 struct mwl_softc *sc = arg;
3420 int nreaped;
3421
3422 /*
3423 * Process each active queue.
3424 */
3425 nreaped = 0;
3426 if (!STAILQ_EMPTY(&sc->sc_txq[0].active))
3427 nreaped += mwl_tx_processq(sc, &sc->sc_txq[0]);
3428 if (!STAILQ_EMPTY(&sc->sc_txq[1].active))
3429 nreaped += mwl_tx_processq(sc, &sc->sc_txq[1]);
3430 if (!STAILQ_EMPTY(&sc->sc_txq[2].active))
3431 nreaped += mwl_tx_processq(sc, &sc->sc_txq[2]);
3432 if (!STAILQ_EMPTY(&sc->sc_txq[3].active))
3433 nreaped += mwl_tx_processq(sc, &sc->sc_txq[3]);
3434
3435 if (nreaped != 0) {
3436 sc->sc_tx_timer = 0;
3437 if (mbufq_first(&sc->sc_snd) != NULL) {
3438 /* NB: kick fw; the tx thread may have been preempted */
3439 mwl_hal_txstart(sc->sc_mh, 0);
3440 mwl_start(sc);
3441 }
3442 }
3443 }
3444
3445 static void
mwl_tx_draintxq(struct mwl_softc * sc,struct mwl_txq * txq)3446 mwl_tx_draintxq(struct mwl_softc *sc, struct mwl_txq *txq)
3447 {
3448 struct ieee80211_node *ni;
3449 struct mwl_txbuf *bf;
3450 u_int ix;
3451
3452 /*
3453 * NB: this assumes output has been stopped and
3454 * we do not need to block mwl_tx_tasklet
3455 */
3456 for (ix = 0;; ix++) {
3457 MWL_TXQ_LOCK(txq);
3458 bf = STAILQ_FIRST(&txq->active);
3459 if (bf == NULL) {
3460 MWL_TXQ_UNLOCK(txq);
3461 break;
3462 }
3463 STAILQ_REMOVE_HEAD(&txq->active, bf_list);
3464 MWL_TXQ_UNLOCK(txq);
3465 #ifdef MWL_DEBUG
3466 if (sc->sc_debug & MWL_DEBUG_RESET) {
3467 struct ieee80211com *ic = &sc->sc_ic;
3468 const struct mwltxrec *tr =
3469 mtod(bf->bf_m, const struct mwltxrec *);
3470 mwl_printtxbuf(bf, txq->qnum, ix);
3471 ieee80211_dump_pkt(ic, (const uint8_t *)&tr->wh,
3472 bf->bf_m->m_len - sizeof(tr->fwlen), 0, -1);
3473 }
3474 #endif /* MWL_DEBUG */
3475 bus_dmamap_unload(sc->sc_dmat, bf->bf_dmamap);
3476 ni = bf->bf_node;
3477 if (ni != NULL) {
3478 /*
3479 * Reclaim node reference.
3480 */
3481 ieee80211_free_node(ni);
3482 }
3483 m_freem(bf->bf_m);
3484
3485 mwl_puttxbuf_tail(txq, bf);
3486 }
3487 }
3488
3489 /*
3490 * Drain the transmit queues and reclaim resources.
3491 */
3492 static void
mwl_draintxq(struct mwl_softc * sc)3493 mwl_draintxq(struct mwl_softc *sc)
3494 {
3495 int i;
3496
3497 for (i = 0; i < MWL_NUM_TX_QUEUES; i++)
3498 mwl_tx_draintxq(sc, &sc->sc_txq[i]);
3499 sc->sc_tx_timer = 0;
3500 }
3501
3502 #ifdef MWL_DIAGAPI
3503 /*
3504 * Reset the transmit queues to a pristine state after a fw download.
3505 */
3506 static void
mwl_resettxq(struct mwl_softc * sc)3507 mwl_resettxq(struct mwl_softc *sc)
3508 {
3509 int i;
3510
3511 for (i = 0; i < MWL_NUM_TX_QUEUES; i++)
3512 mwl_txq_reset(sc, &sc->sc_txq[i]);
3513 }
3514 #endif /* MWL_DIAGAPI */
3515
3516 /*
3517 * Clear the transmit queues of any frames submitted for the
3518 * specified vap. This is done when the vap is deleted so we
3519 * don't potentially reference the vap after it is gone.
3520 * Note we cannot remove the frames; we only reclaim the node
3521 * reference.
3522 */
3523 static void
mwl_cleartxq(struct mwl_softc * sc,struct ieee80211vap * vap)3524 mwl_cleartxq(struct mwl_softc *sc, struct ieee80211vap *vap)
3525 {
3526 struct mwl_txq *txq;
3527 struct mwl_txbuf *bf;
3528 int i;
3529
3530 for (i = 0; i < MWL_NUM_TX_QUEUES; i++) {
3531 txq = &sc->sc_txq[i];
3532 MWL_TXQ_LOCK(txq);
3533 STAILQ_FOREACH(bf, &txq->active, bf_list) {
3534 struct ieee80211_node *ni = bf->bf_node;
3535 if (ni != NULL && ni->ni_vap == vap) {
3536 bf->bf_node = NULL;
3537 ieee80211_free_node(ni);
3538 }
3539 }
3540 MWL_TXQ_UNLOCK(txq);
3541 }
3542 }
3543
3544 static int
mwl_recv_action(struct ieee80211_node * ni,const struct ieee80211_frame * wh,const uint8_t * frm,const uint8_t * efrm)3545 mwl_recv_action(struct ieee80211_node *ni, const struct ieee80211_frame *wh,
3546 const uint8_t *frm, const uint8_t *efrm)
3547 {
3548 struct mwl_softc *sc = ni->ni_ic->ic_softc;
3549 const struct ieee80211_action *ia;
3550
3551 ia = (const struct ieee80211_action *) frm;
3552 if (ia->ia_category == IEEE80211_ACTION_CAT_HT &&
3553 ia->ia_action == IEEE80211_ACTION_HT_MIMOPWRSAVE) {
3554 const struct ieee80211_action_ht_mimopowersave *mps =
3555 (const struct ieee80211_action_ht_mimopowersave *) ia;
3556
3557 mwl_hal_setmimops(sc->sc_mh, ni->ni_macaddr,
3558 mps->am_control & IEEE80211_A_HT_MIMOPWRSAVE_ENA,
3559 _IEEE80211_MASKSHIFT(mps->am_control,
3560 IEEE80211_A_HT_MIMOPWRSAVE_MODE));
3561 return 0;
3562 } else
3563 return sc->sc_recv_action(ni, wh, frm, efrm);
3564 }
3565
3566 static int
mwl_addba_request(struct ieee80211_node * ni,struct ieee80211_tx_ampdu * tap,int dialogtoken,int baparamset,int batimeout)3567 mwl_addba_request(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap,
3568 int dialogtoken, int baparamset, int batimeout)
3569 {
3570 struct mwl_softc *sc = ni->ni_ic->ic_softc;
3571 struct ieee80211vap *vap = ni->ni_vap;
3572 struct mwl_node *mn = MWL_NODE(ni);
3573 struct mwl_bastate *bas;
3574
3575 bas = tap->txa_private;
3576 if (bas == NULL) {
3577 const MWL_HAL_BASTREAM *sp;
3578 /*
3579 * Check for a free BA stream slot.
3580 */
3581 #if MWL_MAXBA > 3
3582 if (mn->mn_ba[3].bastream == NULL)
3583 bas = &mn->mn_ba[3];
3584 else
3585 #endif
3586 #if MWL_MAXBA > 2
3587 if (mn->mn_ba[2].bastream == NULL)
3588 bas = &mn->mn_ba[2];
3589 else
3590 #endif
3591 #if MWL_MAXBA > 1
3592 if (mn->mn_ba[1].bastream == NULL)
3593 bas = &mn->mn_ba[1];
3594 else
3595 #endif
3596 #if MWL_MAXBA > 0
3597 if (mn->mn_ba[0].bastream == NULL)
3598 bas = &mn->mn_ba[0];
3599 else
3600 #endif
3601 {
3602 /* sta already has max BA streams */
3603 /* XXX assign BA stream to highest priority tid */
3604 DPRINTF(sc, MWL_DEBUG_AMPDU,
3605 "%s: already has max bastreams\n", __func__);
3606 sc->sc_stats.mst_ampdu_reject++;
3607 return 0;
3608 }
3609 /* NB: no held reference to ni */
3610 sp = mwl_hal_bastream_alloc(MWL_VAP(vap)->mv_hvap,
3611 (baparamset & IEEE80211_BAPS_POLICY_IMMEDIATE) != 0,
3612 ni->ni_macaddr, tap->txa_tid, ni->ni_htparam,
3613 ni, tap);
3614 if (sp == NULL) {
3615 /*
3616 * No available stream, return 0 so no
3617 * a-mpdu aggregation will be done.
3618 */
3619 DPRINTF(sc, MWL_DEBUG_AMPDU,
3620 "%s: no bastream available\n", __func__);
3621 sc->sc_stats.mst_ampdu_nostream++;
3622 return 0;
3623 }
3624 DPRINTF(sc, MWL_DEBUG_AMPDU, "%s: alloc bastream %p\n",
3625 __func__, sp);
3626 /* NB: qos is left zero so we won't match in mwl_tx_start */
3627 bas->bastream = sp;
3628 tap->txa_private = bas;
3629 }
3630 /* fetch current seq# from the firmware; if available */
3631 if (mwl_hal_bastream_get_seqno(sc->sc_mh, bas->bastream,
3632 vap->iv_opmode == IEEE80211_M_STA ? vap->iv_myaddr : ni->ni_macaddr,
3633 &tap->txa_start) != 0)
3634 tap->txa_start = 0;
3635 return sc->sc_addba_request(ni, tap, dialogtoken, baparamset, batimeout);
3636 }
3637
3638 static int
mwl_addba_response(struct ieee80211_node * ni,struct ieee80211_tx_ampdu * tap,int code,int baparamset,int batimeout)3639 mwl_addba_response(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap,
3640 int code, int baparamset, int batimeout)
3641 {
3642 struct mwl_softc *sc = ni->ni_ic->ic_softc;
3643 struct mwl_bastate *bas;
3644
3645 bas = tap->txa_private;
3646 if (bas == NULL) {
3647 /* XXX should not happen */
3648 DPRINTF(sc, MWL_DEBUG_AMPDU,
3649 "%s: no BA stream allocated, TID %d\n",
3650 __func__, tap->txa_tid);
3651 sc->sc_stats.mst_addba_nostream++;
3652 return 0;
3653 }
3654 if (code == IEEE80211_STATUS_SUCCESS) {
3655 struct ieee80211vap *vap = ni->ni_vap;
3656 int bufsiz, error;
3657
3658 /*
3659 * Tell the firmware to setup the BA stream;
3660 * we know resources are available because we
3661 * pre-allocated one before forming the request.
3662 */
3663 bufsiz = _IEEE80211_MASKSHIFT(baparamset, IEEE80211_BAPS_BUFSIZ);
3664 if (bufsiz == 0)
3665 bufsiz = IEEE80211_AGGR_BAWMAX;
3666 error = mwl_hal_bastream_create(MWL_VAP(vap)->mv_hvap,
3667 bas->bastream, bufsiz, bufsiz, tap->txa_start);
3668 if (error != 0) {
3669 /*
3670 * Setup failed, return immediately so no a-mpdu
3671 * aggregation will be done.
3672 */
3673 mwl_hal_bastream_destroy(sc->sc_mh, bas->bastream);
3674 mwl_bastream_free(bas);
3675 tap->txa_private = NULL;
3676
3677 DPRINTF(sc, MWL_DEBUG_AMPDU,
3678 "%s: create failed, error %d, bufsiz %d TID %d "
3679 "htparam 0x%x\n", __func__, error, bufsiz,
3680 tap->txa_tid, ni->ni_htparam);
3681 sc->sc_stats.mst_bacreate_failed++;
3682 return 0;
3683 }
3684 /* NB: cache txq to avoid ptr indirect */
3685 mwl_bastream_setup(bas, tap->txa_tid, bas->bastream->txq);
3686 DPRINTF(sc, MWL_DEBUG_AMPDU,
3687 "%s: bastream %p assigned to txq %d TID %d bufsiz %d "
3688 "htparam 0x%x\n", __func__, bas->bastream,
3689 bas->txq, tap->txa_tid, bufsiz, ni->ni_htparam);
3690 } else {
3691 /*
3692 * Other side NAK'd us; return the resources.
3693 */
3694 DPRINTF(sc, MWL_DEBUG_AMPDU,
3695 "%s: request failed with code %d, destroy bastream %p\n",
3696 __func__, code, bas->bastream);
3697 mwl_hal_bastream_destroy(sc->sc_mh, bas->bastream);
3698 mwl_bastream_free(bas);
3699 tap->txa_private = NULL;
3700 }
3701 /* NB: firmware sends BAR so we don't need to */
3702 return sc->sc_addba_response(ni, tap, code, baparamset, batimeout);
3703 }
3704
3705 static void
mwl_addba_stop(struct ieee80211_node * ni,struct ieee80211_tx_ampdu * tap)3706 mwl_addba_stop(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap)
3707 {
3708 struct mwl_softc *sc = ni->ni_ic->ic_softc;
3709 struct mwl_bastate *bas;
3710
3711 bas = tap->txa_private;
3712 if (bas != NULL) {
3713 DPRINTF(sc, MWL_DEBUG_AMPDU, "%s: destroy bastream %p\n",
3714 __func__, bas->bastream);
3715 mwl_hal_bastream_destroy(sc->sc_mh, bas->bastream);
3716 mwl_bastream_free(bas);
3717 tap->txa_private = NULL;
3718 }
3719 sc->sc_addba_stop(ni, tap);
3720 }
3721
3722 /*
3723 * Setup the rx data structures. This should only be
3724 * done once or we may get out of sync with the firmware.
3725 */
3726 static int
mwl_startrecv(struct mwl_softc * sc)3727 mwl_startrecv(struct mwl_softc *sc)
3728 {
3729 if (!sc->sc_recvsetup) {
3730 struct mwl_rxbuf *bf, *prev;
3731 struct mwl_rxdesc *ds;
3732
3733 prev = NULL;
3734 STAILQ_FOREACH(bf, &sc->sc_rxbuf, bf_list) {
3735 int error = mwl_rxbuf_init(sc, bf);
3736 if (error != 0) {
3737 DPRINTF(sc, MWL_DEBUG_RECV,
3738 "%s: mwl_rxbuf_init failed %d\n",
3739 __func__, error);
3740 return error;
3741 }
3742 if (prev != NULL) {
3743 ds = prev->bf_desc;
3744 ds->pPhysNext = htole32(bf->bf_daddr);
3745 }
3746 prev = bf;
3747 }
3748 if (prev != NULL) {
3749 ds = prev->bf_desc;
3750 ds->pPhysNext =
3751 htole32(STAILQ_FIRST(&sc->sc_rxbuf)->bf_daddr);
3752 }
3753 sc->sc_recvsetup = 1;
3754 }
3755 mwl_mode_init(sc); /* set filters, etc. */
3756 return 0;
3757 }
3758
3759 static MWL_HAL_APMODE
mwl_getapmode(const struct ieee80211vap * vap,struct ieee80211_channel * chan)3760 mwl_getapmode(const struct ieee80211vap *vap, struct ieee80211_channel *chan)
3761 {
3762 MWL_HAL_APMODE mode;
3763
3764 if (IEEE80211_IS_CHAN_HT(chan)) {
3765 if (vap->iv_flags_ht & IEEE80211_FHT_PUREN)
3766 mode = AP_MODE_N_ONLY;
3767 else if (IEEE80211_IS_CHAN_5GHZ(chan))
3768 mode = AP_MODE_AandN;
3769 else if (vap->iv_flags & IEEE80211_F_PUREG)
3770 mode = AP_MODE_GandN;
3771 else
3772 mode = AP_MODE_BandGandN;
3773 } else if (IEEE80211_IS_CHAN_ANYG(chan)) {
3774 if (vap->iv_flags & IEEE80211_F_PUREG)
3775 mode = AP_MODE_G_ONLY;
3776 else
3777 mode = AP_MODE_MIXED;
3778 } else if (IEEE80211_IS_CHAN_B(chan))
3779 mode = AP_MODE_B_ONLY;
3780 else if (IEEE80211_IS_CHAN_A(chan))
3781 mode = AP_MODE_A_ONLY;
3782 else
3783 mode = AP_MODE_MIXED; /* XXX should not happen? */
3784 return mode;
3785 }
3786
3787 static int
mwl_setapmode(struct ieee80211vap * vap,struct ieee80211_channel * chan)3788 mwl_setapmode(struct ieee80211vap *vap, struct ieee80211_channel *chan)
3789 {
3790 struct mwl_hal_vap *hvap = MWL_VAP(vap)->mv_hvap;
3791 return mwl_hal_setapmode(hvap, mwl_getapmode(vap, chan));
3792 }
3793
3794 /*
3795 * Set/change channels.
3796 */
3797 static int
mwl_chan_set(struct mwl_softc * sc,struct ieee80211_channel * chan)3798 mwl_chan_set(struct mwl_softc *sc, struct ieee80211_channel *chan)
3799 {
3800 struct mwl_hal *mh = sc->sc_mh;
3801 struct ieee80211com *ic = &sc->sc_ic;
3802 MWL_HAL_CHANNEL hchan;
3803 int maxtxpow;
3804
3805 DPRINTF(sc, MWL_DEBUG_RESET, "%s: chan %u MHz/flags 0x%x\n",
3806 __func__, chan->ic_freq, chan->ic_flags);
3807
3808 /*
3809 * Convert to a HAL channel description with
3810 * the flags constrained to reflect the current
3811 * operating mode.
3812 */
3813 mwl_mapchan(&hchan, chan);
3814 mwl_hal_intrset(mh, 0); /* disable interrupts */
3815 #if 0
3816 mwl_draintxq(sc); /* clear pending tx frames */
3817 #endif
3818 mwl_hal_setchannel(mh, &hchan);
3819 /*
3820 * Tx power is cap'd by the regulatory setting and
3821 * possibly a user-set limit. We pass the min of
3822 * these to the hal to apply them to the cal data
3823 * for this channel.
3824 * XXX min bound?
3825 */
3826 maxtxpow = 2*chan->ic_maxregpower;
3827 if (maxtxpow > ic->ic_txpowlimit)
3828 maxtxpow = ic->ic_txpowlimit;
3829 mwl_hal_settxpower(mh, &hchan, maxtxpow / 2);
3830 /* NB: potentially change mcast/mgt rates */
3831 mwl_setcurchanrates(sc);
3832
3833 /*
3834 * Update internal state.
3835 */
3836 sc->sc_tx_th.wt_chan_freq = htole16(chan->ic_freq);
3837 sc->sc_rx_th.wr_chan_freq = htole16(chan->ic_freq);
3838 if (IEEE80211_IS_CHAN_A(chan)) {
3839 sc->sc_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_A);
3840 sc->sc_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_A);
3841 } else if (IEEE80211_IS_CHAN_ANYG(chan)) {
3842 sc->sc_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_G);
3843 sc->sc_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_G);
3844 } else {
3845 sc->sc_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_B);
3846 sc->sc_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_B);
3847 }
3848 sc->sc_curchan = hchan;
3849 mwl_hal_intrset(mh, sc->sc_imask);
3850
3851 return 0;
3852 }
3853
3854 static void
mwl_scan_start(struct ieee80211com * ic)3855 mwl_scan_start(struct ieee80211com *ic)
3856 {
3857 struct mwl_softc *sc = ic->ic_softc;
3858
3859 DPRINTF(sc, MWL_DEBUG_STATE, "%s\n", __func__);
3860 }
3861
3862 static void
mwl_scan_end(struct ieee80211com * ic)3863 mwl_scan_end(struct ieee80211com *ic)
3864 {
3865 struct mwl_softc *sc = ic->ic_softc;
3866
3867 DPRINTF(sc, MWL_DEBUG_STATE, "%s\n", __func__);
3868 }
3869
3870 static void
mwl_set_channel(struct ieee80211com * ic)3871 mwl_set_channel(struct ieee80211com *ic)
3872 {
3873 struct mwl_softc *sc = ic->ic_softc;
3874
3875 (void) mwl_chan_set(sc, ic->ic_curchan);
3876 }
3877
3878 /*
3879 * Handle a channel switch request. We inform the firmware
3880 * and mark the global state to suppress various actions.
3881 * NB: we issue only one request to the fw; we may be called
3882 * multiple times if there are multiple vap's.
3883 */
3884 static void
mwl_startcsa(struct ieee80211vap * vap)3885 mwl_startcsa(struct ieee80211vap *vap)
3886 {
3887 struct ieee80211com *ic = vap->iv_ic;
3888 struct mwl_softc *sc = ic->ic_softc;
3889 MWL_HAL_CHANNEL hchan;
3890
3891 if (sc->sc_csapending)
3892 return;
3893
3894 mwl_mapchan(&hchan, ic->ic_csa_newchan);
3895 /* 1 =>'s quiet channel */
3896 mwl_hal_setchannelswitchie(sc->sc_mh, &hchan, 1, ic->ic_csa_count);
3897 sc->sc_csapending = 1;
3898 }
3899
3900 /*
3901 * Plumb any static WEP key for the station. This is
3902 * necessary as we must propagate the key from the
3903 * global key table of the vap to each sta db entry.
3904 */
3905 static void
mwl_setanywepkey(struct ieee80211vap * vap,const uint8_t mac[IEEE80211_ADDR_LEN])3906 mwl_setanywepkey(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
3907 {
3908 if ((vap->iv_flags & (IEEE80211_F_PRIVACY|IEEE80211_F_WPA)) ==
3909 IEEE80211_F_PRIVACY &&
3910 vap->iv_def_txkey != IEEE80211_KEYIX_NONE &&
3911 vap->iv_nw_keys[vap->iv_def_txkey].wk_keyix != IEEE80211_KEYIX_NONE)
3912 (void) _mwl_key_set(vap, &vap->iv_nw_keys[vap->iv_def_txkey],
3913 mac);
3914 }
3915
3916 static int
mwl_peerstadb(struct ieee80211_node * ni,int aid,int staid,MWL_HAL_PEERINFO * pi)3917 mwl_peerstadb(struct ieee80211_node *ni, int aid, int staid, MWL_HAL_PEERINFO *pi)
3918 {
3919 #define WME(ie) ((const struct ieee80211_wme_info *) ie)
3920 struct ieee80211vap *vap = ni->ni_vap;
3921 struct mwl_hal_vap *hvap;
3922 int error;
3923
3924 if (vap->iv_opmode == IEEE80211_M_WDS) {
3925 /*
3926 * WDS vap's do not have a f/w vap; instead they piggyback
3927 * on an AP vap and we must install the sta db entry and
3928 * crypto state using that AP's handle (the WDS vap has none).
3929 */
3930 hvap = MWL_VAP(vap)->mv_ap_hvap;
3931 } else
3932 hvap = MWL_VAP(vap)->mv_hvap;
3933 error = mwl_hal_newstation(hvap, ni->ni_macaddr,
3934 aid, staid, pi,
3935 ni->ni_flags & (IEEE80211_NODE_QOS | IEEE80211_NODE_HT),
3936 ni->ni_ies.wme_ie != NULL ? WME(ni->ni_ies.wme_ie)->wme_info : 0);
3937 if (error == 0) {
3938 /*
3939 * Setup security for this station. For sta mode this is
3940 * needed even though do the same thing on transition to
3941 * AUTH state because the call to mwl_hal_newstation
3942 * clobbers the crypto state we setup.
3943 */
3944 mwl_setanywepkey(vap, ni->ni_macaddr);
3945 }
3946 return error;
3947 #undef WME
3948 }
3949
3950 static void
mwl_setglobalkeys(struct ieee80211vap * vap)3951 mwl_setglobalkeys(struct ieee80211vap *vap)
3952 {
3953 struct ieee80211_key *wk;
3954
3955 wk = &vap->iv_nw_keys[0];
3956 for (; wk < &vap->iv_nw_keys[IEEE80211_WEP_NKID]; wk++)
3957 if (wk->wk_keyix != IEEE80211_KEYIX_NONE)
3958 (void) _mwl_key_set(vap, wk, vap->iv_myaddr);
3959 }
3960
3961 /*
3962 * Convert a legacy rate set to a firmware bitmask.
3963 */
3964 static uint32_t
get_rate_bitmap(const struct ieee80211_rateset * rs)3965 get_rate_bitmap(const struct ieee80211_rateset *rs)
3966 {
3967 uint32_t rates;
3968 int i;
3969
3970 rates = 0;
3971 for (i = 0; i < rs->rs_nrates; i++)
3972 switch (rs->rs_rates[i] & IEEE80211_RATE_VAL) {
3973 case 2: rates |= 0x001; break;
3974 case 4: rates |= 0x002; break;
3975 case 11: rates |= 0x004; break;
3976 case 22: rates |= 0x008; break;
3977 case 44: rates |= 0x010; break;
3978 case 12: rates |= 0x020; break;
3979 case 18: rates |= 0x040; break;
3980 case 24: rates |= 0x080; break;
3981 case 36: rates |= 0x100; break;
3982 case 48: rates |= 0x200; break;
3983 case 72: rates |= 0x400; break;
3984 case 96: rates |= 0x800; break;
3985 case 108: rates |= 0x1000; break;
3986 }
3987 return rates;
3988 }
3989
3990 /*
3991 * Construct an HT firmware bitmask from an HT rate set.
3992 */
3993 static uint32_t
get_htrate_bitmap(const struct ieee80211_htrateset * rs)3994 get_htrate_bitmap(const struct ieee80211_htrateset *rs)
3995 {
3996 uint32_t rates;
3997 int i;
3998
3999 rates = 0;
4000 for (i = 0; i < rs->rs_nrates; i++) {
4001 if (rs->rs_rates[i] < 16)
4002 rates |= 1<<rs->rs_rates[i];
4003 }
4004 return rates;
4005 }
4006
4007 /*
4008 * Craft station database entry for station.
4009 * NB: use host byte order here, the hal handles byte swapping.
4010 */
4011 static MWL_HAL_PEERINFO *
mkpeerinfo(MWL_HAL_PEERINFO * pi,const struct ieee80211_node * ni)4012 mkpeerinfo(MWL_HAL_PEERINFO *pi, const struct ieee80211_node *ni)
4013 {
4014 const struct ieee80211vap *vap = ni->ni_vap;
4015
4016 memset(pi, 0, sizeof(*pi));
4017 pi->LegacyRateBitMap = get_rate_bitmap(&ni->ni_rates);
4018 pi->CapInfo = ni->ni_capinfo;
4019 if (ni->ni_flags & IEEE80211_NODE_HT) {
4020 /* HT capabilities, etc */
4021 pi->HTCapabilitiesInfo = ni->ni_htcap;
4022 /* XXX pi.HTCapabilitiesInfo */
4023 pi->MacHTParamInfo = ni->ni_htparam;
4024 pi->HTRateBitMap = get_htrate_bitmap(&ni->ni_htrates);
4025 pi->AddHtInfo.ControlChan = ni->ni_htctlchan;
4026 pi->AddHtInfo.AddChan = ni->ni_ht2ndchan;
4027 pi->AddHtInfo.OpMode = ni->ni_htopmode;
4028 pi->AddHtInfo.stbc = ni->ni_htstbc;
4029
4030 /* constrain according to local configuration */
4031 if ((vap->iv_flags_ht & IEEE80211_FHT_SHORTGI40) == 0)
4032 pi->HTCapabilitiesInfo &= ~IEEE80211_HTCAP_SHORTGI40;
4033 if ((vap->iv_flags_ht & IEEE80211_FHT_SHORTGI20) == 0)
4034 pi->HTCapabilitiesInfo &= ~IEEE80211_HTCAP_SHORTGI20;
4035 if (ni->ni_chw != 40)
4036 pi->HTCapabilitiesInfo &= ~IEEE80211_HTCAP_CHWIDTH40;
4037 }
4038 return pi;
4039 }
4040
4041 /*
4042 * Re-create the local sta db entry for a vap to ensure
4043 * up to date WME state is pushed to the firmware. Because
4044 * this resets crypto state this must be followed by a
4045 * reload of any keys in the global key table.
4046 */
4047 static int
mwl_localstadb(struct ieee80211vap * vap)4048 mwl_localstadb(struct ieee80211vap *vap)
4049 {
4050 #define WME(ie) ((const struct ieee80211_wme_info *) ie)
4051 struct mwl_hal_vap *hvap = MWL_VAP(vap)->mv_hvap;
4052 struct ieee80211_node *bss;
4053 MWL_HAL_PEERINFO pi;
4054 int error;
4055
4056 switch (vap->iv_opmode) {
4057 case IEEE80211_M_STA:
4058 bss = vap->iv_bss;
4059 error = mwl_hal_newstation(hvap, vap->iv_myaddr, 0, 0,
4060 vap->iv_state == IEEE80211_S_RUN ?
4061 mkpeerinfo(&pi, bss) : NULL,
4062 (bss->ni_flags & (IEEE80211_NODE_QOS | IEEE80211_NODE_HT)),
4063 bss->ni_ies.wme_ie != NULL ?
4064 WME(bss->ni_ies.wme_ie)->wme_info : 0);
4065 if (error == 0)
4066 mwl_setglobalkeys(vap);
4067 break;
4068 case IEEE80211_M_HOSTAP:
4069 case IEEE80211_M_MBSS:
4070 error = mwl_hal_newstation(hvap, vap->iv_myaddr,
4071 0, 0, NULL, vap->iv_flags & IEEE80211_F_WME, 0);
4072 if (error == 0)
4073 mwl_setglobalkeys(vap);
4074 break;
4075 default:
4076 error = 0;
4077 break;
4078 }
4079 return error;
4080 #undef WME
4081 }
4082
4083 static int
mwl_newstate(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)4084 mwl_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
4085 {
4086 struct mwl_vap *mvp = MWL_VAP(vap);
4087 struct mwl_hal_vap *hvap = mvp->mv_hvap;
4088 struct ieee80211com *ic = vap->iv_ic;
4089 struct ieee80211_node *ni = NULL;
4090 struct mwl_softc *sc = ic->ic_softc;
4091 struct mwl_hal *mh = sc->sc_mh;
4092 enum ieee80211_state ostate = vap->iv_state;
4093 int error;
4094
4095 DPRINTF(sc, MWL_DEBUG_STATE, "%s: %s: %s -> %s\n",
4096 vap->iv_ifp->if_xname, __func__,
4097 ieee80211_state_name[ostate], ieee80211_state_name[nstate]);
4098
4099 callout_stop(&sc->sc_timer);
4100 /*
4101 * Clear current radar detection state.
4102 */
4103 if (ostate == IEEE80211_S_CAC) {
4104 /* stop quiet mode radar detection */
4105 mwl_hal_setradardetection(mh, DR_CHK_CHANNEL_AVAILABLE_STOP);
4106 } else if (sc->sc_radarena) {
4107 /* stop in-service radar detection */
4108 mwl_hal_setradardetection(mh, DR_DFS_DISABLE);
4109 sc->sc_radarena = 0;
4110 }
4111 /*
4112 * Carry out per-state actions before doing net80211 work.
4113 */
4114 if (nstate == IEEE80211_S_INIT) {
4115 /* NB: only ap+sta vap's have a fw entity */
4116 if (hvap != NULL)
4117 mwl_hal_stop(hvap);
4118 } else if (nstate == IEEE80211_S_SCAN) {
4119 mwl_hal_start(hvap);
4120 /* NB: this disables beacon frames */
4121 mwl_hal_setinframode(hvap);
4122 } else if (nstate == IEEE80211_S_AUTH) {
4123 /*
4124 * Must create a sta db entry in case a WEP key needs to
4125 * be plumbed. This entry will be overwritten if we
4126 * associate; otherwise it will be reclaimed on node free.
4127 */
4128 ni = vap->iv_bss;
4129 MWL_NODE(ni)->mn_hvap = hvap;
4130 (void) mwl_peerstadb(ni, 0, 0, NULL);
4131 } else if (nstate == IEEE80211_S_CSA) {
4132 /* XXX move to below? */
4133 if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
4134 vap->iv_opmode == IEEE80211_M_MBSS)
4135 mwl_startcsa(vap);
4136 } else if (nstate == IEEE80211_S_CAC) {
4137 /* XXX move to below? */
4138 /* stop ap xmit and enable quiet mode radar detection */
4139 mwl_hal_setradardetection(mh, DR_CHK_CHANNEL_AVAILABLE_START);
4140 }
4141
4142 /*
4143 * Invoke the parent method to do net80211 work.
4144 */
4145 error = mvp->mv_newstate(vap, nstate, arg);
4146
4147 /*
4148 * Carry out work that must be done after net80211 runs;
4149 * this work requires up to date state (e.g. iv_bss).
4150 */
4151 if (error == 0 && nstate == IEEE80211_S_RUN) {
4152 /* NB: collect bss node again, it may have changed */
4153 ni = vap->iv_bss;
4154
4155 DPRINTF(sc, MWL_DEBUG_STATE,
4156 "%s: %s(RUN): iv_flags 0x%08x bintvl %d bssid %s "
4157 "capinfo 0x%04x chan %d\n",
4158 vap->iv_ifp->if_xname, __func__, vap->iv_flags,
4159 ni->ni_intval, ether_sprintf(ni->ni_bssid), ni->ni_capinfo,
4160 ieee80211_chan2ieee(ic, ic->ic_curchan));
4161
4162 /*
4163 * Recreate local sta db entry to update WME/HT state.
4164 */
4165 mwl_localstadb(vap);
4166 switch (vap->iv_opmode) {
4167 case IEEE80211_M_HOSTAP:
4168 case IEEE80211_M_MBSS:
4169 if (ostate == IEEE80211_S_CAC) {
4170 /* enable in-service radar detection */
4171 mwl_hal_setradardetection(mh,
4172 DR_IN_SERVICE_MONITOR_START);
4173 sc->sc_radarena = 1;
4174 }
4175 /*
4176 * Allocate and setup the beacon frame
4177 * (and related state).
4178 */
4179 error = mwl_reset_vap(vap, IEEE80211_S_RUN);
4180 if (error != 0) {
4181 DPRINTF(sc, MWL_DEBUG_STATE,
4182 "%s: beacon setup failed, error %d\n",
4183 __func__, error);
4184 goto bad;
4185 }
4186 /* NB: must be after setting up beacon */
4187 mwl_hal_start(hvap);
4188 break;
4189 case IEEE80211_M_STA:
4190 DPRINTF(sc, MWL_DEBUG_STATE, "%s: %s: aid 0x%x\n",
4191 vap->iv_ifp->if_xname, __func__, ni->ni_associd);
4192 /*
4193 * Set state now that we're associated.
4194 */
4195 mwl_hal_setassocid(hvap, ni->ni_bssid, ni->ni_associd);
4196 mwl_setrates(vap);
4197 mwl_hal_setrtsthreshold(hvap, vap->iv_rtsthreshold);
4198 if ((vap->iv_flags & IEEE80211_F_DWDS) &&
4199 sc->sc_ndwdsvaps++ == 0)
4200 mwl_hal_setdwds(mh, 1);
4201 break;
4202 case IEEE80211_M_WDS:
4203 DPRINTF(sc, MWL_DEBUG_STATE, "%s: %s: bssid %s\n",
4204 vap->iv_ifp->if_xname, __func__,
4205 ether_sprintf(ni->ni_bssid));
4206 mwl_seteapolformat(vap);
4207 break;
4208 default:
4209 break;
4210 }
4211 /*
4212 * Set CS mode according to operating channel;
4213 * this mostly an optimization for 5GHz.
4214 *
4215 * NB: must follow mwl_hal_start which resets csmode
4216 */
4217 if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan))
4218 mwl_hal_setcsmode(mh, CSMODE_AGGRESSIVE);
4219 else
4220 mwl_hal_setcsmode(mh, CSMODE_AUTO_ENA);
4221 /*
4222 * Start timer to prod firmware.
4223 */
4224 if (sc->sc_ageinterval != 0)
4225 callout_reset(&sc->sc_timer, sc->sc_ageinterval*hz,
4226 mwl_agestations, sc);
4227 } else if (nstate == IEEE80211_S_SLEEP) {
4228 /* XXX set chip in power save */
4229 } else if ((vap->iv_flags & IEEE80211_F_DWDS) &&
4230 --sc->sc_ndwdsvaps == 0)
4231 mwl_hal_setdwds(mh, 0);
4232 bad:
4233 return error;
4234 }
4235
4236 /*
4237 * Manage station id's; these are separate from AID's
4238 * as AID's may have values out of the range of possible
4239 * station id's acceptable to the firmware.
4240 */
4241 static int
allocstaid(struct mwl_softc * sc,int aid)4242 allocstaid(struct mwl_softc *sc, int aid)
4243 {
4244 int staid;
4245
4246 if (!(0 < aid && aid < MWL_MAXSTAID) || isset(sc->sc_staid, aid)) {
4247 /* NB: don't use 0 */
4248 for (staid = 1; staid < MWL_MAXSTAID; staid++)
4249 if (isclr(sc->sc_staid, staid))
4250 break;
4251 } else
4252 staid = aid;
4253 setbit(sc->sc_staid, staid);
4254 return staid;
4255 }
4256
4257 static void
delstaid(struct mwl_softc * sc,int staid)4258 delstaid(struct mwl_softc *sc, int staid)
4259 {
4260 clrbit(sc->sc_staid, staid);
4261 }
4262
4263 /*
4264 * Setup driver-specific state for a newly associated node.
4265 * Note that we're called also on a re-associate, the isnew
4266 * param tells us if this is the first time or not.
4267 */
4268 static void
mwl_newassoc(struct ieee80211_node * ni,int isnew)4269 mwl_newassoc(struct ieee80211_node *ni, int isnew)
4270 {
4271 struct ieee80211vap *vap = ni->ni_vap;
4272 struct mwl_softc *sc = vap->iv_ic->ic_softc;
4273 struct mwl_node *mn = MWL_NODE(ni);
4274 MWL_HAL_PEERINFO pi;
4275 uint16_t aid;
4276 int error;
4277
4278 aid = IEEE80211_AID(ni->ni_associd);
4279 if (isnew) {
4280 mn->mn_staid = allocstaid(sc, aid);
4281 mn->mn_hvap = MWL_VAP(vap)->mv_hvap;
4282 } else {
4283 mn = MWL_NODE(ni);
4284 /* XXX reset BA stream? */
4285 }
4286 DPRINTF(sc, MWL_DEBUG_NODE, "%s: mac %s isnew %d aid %d staid %d\n",
4287 __func__, ether_sprintf(ni->ni_macaddr), isnew, aid, mn->mn_staid);
4288 error = mwl_peerstadb(ni, aid, mn->mn_staid, mkpeerinfo(&pi, ni));
4289 if (error != 0) {
4290 DPRINTF(sc, MWL_DEBUG_NODE,
4291 "%s: error %d creating sta db entry\n",
4292 __func__, error);
4293 /* XXX how to deal with error? */
4294 }
4295 }
4296
4297 /*
4298 * Periodically poke the firmware to age out station state
4299 * (power save queues, pending tx aggregates).
4300 */
4301 static void
mwl_agestations(void * arg)4302 mwl_agestations(void *arg)
4303 {
4304 struct mwl_softc *sc = arg;
4305
4306 mwl_hal_setkeepalive(sc->sc_mh);
4307 if (sc->sc_ageinterval != 0) /* NB: catch dynamic changes */
4308 callout_schedule(&sc->sc_timer, sc->sc_ageinterval*hz);
4309 }
4310
4311 static const struct mwl_hal_channel *
findhalchannel(const MWL_HAL_CHANNELINFO * ci,int ieee)4312 findhalchannel(const MWL_HAL_CHANNELINFO *ci, int ieee)
4313 {
4314 int i;
4315
4316 for (i = 0; i < ci->nchannels; i++) {
4317 const struct mwl_hal_channel *hc = &ci->channels[i];
4318 if (hc->ieee == ieee)
4319 return hc;
4320 }
4321 return NULL;
4322 }
4323
4324 static int
mwl_setregdomain(struct ieee80211com * ic,struct ieee80211_regdomain * rd,int nchan,struct ieee80211_channel chans[])4325 mwl_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *rd,
4326 int nchan, struct ieee80211_channel chans[])
4327 {
4328 struct mwl_softc *sc = ic->ic_softc;
4329 struct mwl_hal *mh = sc->sc_mh;
4330 const MWL_HAL_CHANNELINFO *ci;
4331 int i;
4332
4333 for (i = 0; i < nchan; i++) {
4334 struct ieee80211_channel *c = &chans[i];
4335 const struct mwl_hal_channel *hc;
4336
4337 if (IEEE80211_IS_CHAN_2GHZ(c)) {
4338 mwl_hal_getchannelinfo(mh, MWL_FREQ_BAND_2DOT4GHZ,
4339 IEEE80211_IS_CHAN_HT40(c) ?
4340 MWL_CH_40_MHz_WIDTH : MWL_CH_20_MHz_WIDTH, &ci);
4341 } else if (IEEE80211_IS_CHAN_5GHZ(c)) {
4342 mwl_hal_getchannelinfo(mh, MWL_FREQ_BAND_5GHZ,
4343 IEEE80211_IS_CHAN_HT40(c) ?
4344 MWL_CH_40_MHz_WIDTH : MWL_CH_20_MHz_WIDTH, &ci);
4345 } else {
4346 device_printf(sc->sc_dev,
4347 "%s: channel %u freq %u/0x%x not 2.4/5GHz\n",
4348 __func__, c->ic_ieee, c->ic_freq, c->ic_flags);
4349 return EINVAL;
4350 }
4351 /*
4352 * Verify channel has cal data and cap tx power.
4353 */
4354 hc = findhalchannel(ci, c->ic_ieee);
4355 if (hc != NULL) {
4356 if (c->ic_maxpower > 2*hc->maxTxPow)
4357 c->ic_maxpower = 2*hc->maxTxPow;
4358 goto next;
4359 }
4360 if (IEEE80211_IS_CHAN_HT40(c)) {
4361 /*
4362 * Look for the extension channel since the
4363 * hal table only has the primary channel.
4364 */
4365 hc = findhalchannel(ci, c->ic_extieee);
4366 if (hc != NULL) {
4367 if (c->ic_maxpower > 2*hc->maxTxPow)
4368 c->ic_maxpower = 2*hc->maxTxPow;
4369 goto next;
4370 }
4371 }
4372 device_printf(sc->sc_dev,
4373 "%s: no cal data for channel %u ext %u freq %u/0x%x\n",
4374 __func__, c->ic_ieee, c->ic_extieee,
4375 c->ic_freq, c->ic_flags);
4376 return EINVAL;
4377 next:
4378 ;
4379 }
4380 return 0;
4381 }
4382
4383 #define IEEE80211_CHAN_HTG (IEEE80211_CHAN_HT|IEEE80211_CHAN_G)
4384 #define IEEE80211_CHAN_HTA (IEEE80211_CHAN_HT|IEEE80211_CHAN_A)
4385
4386 static void
addht40channels(struct ieee80211_channel chans[],int maxchans,int * nchans,const MWL_HAL_CHANNELINFO * ci,int flags)4387 addht40channels(struct ieee80211_channel chans[], int maxchans, int *nchans,
4388 const MWL_HAL_CHANNELINFO *ci, int flags)
4389 {
4390 int i, error;
4391
4392 for (i = 0; i < ci->nchannels; i++) {
4393 const struct mwl_hal_channel *hc = &ci->channels[i];
4394
4395 error = ieee80211_add_channel_ht40(chans, maxchans, nchans,
4396 hc->ieee, hc->maxTxPow, flags);
4397 if (error != 0 && error != ENOENT)
4398 break;
4399 }
4400 }
4401
4402 static void
addchannels(struct ieee80211_channel chans[],int maxchans,int * nchans,const MWL_HAL_CHANNELINFO * ci,const uint8_t bands[])4403 addchannels(struct ieee80211_channel chans[], int maxchans, int *nchans,
4404 const MWL_HAL_CHANNELINFO *ci, const uint8_t bands[])
4405 {
4406 int i, error;
4407
4408 error = 0;
4409 for (i = 0; i < ci->nchannels && error == 0; i++) {
4410 const struct mwl_hal_channel *hc = &ci->channels[i];
4411
4412 error = ieee80211_add_channel(chans, maxchans, nchans,
4413 hc->ieee, hc->freq, hc->maxTxPow, 0, bands);
4414 }
4415 }
4416
4417 static void
getchannels(struct mwl_softc * sc,int maxchans,int * nchans,struct ieee80211_channel chans[])4418 getchannels(struct mwl_softc *sc, int maxchans, int *nchans,
4419 struct ieee80211_channel chans[])
4420 {
4421 const MWL_HAL_CHANNELINFO *ci;
4422 uint8_t bands[IEEE80211_MODE_BYTES];
4423
4424 /*
4425 * Use the channel info from the hal to craft the
4426 * channel list. Note that we pass back an unsorted
4427 * list; the caller is required to sort it for us
4428 * (if desired).
4429 */
4430 *nchans = 0;
4431 if (mwl_hal_getchannelinfo(sc->sc_mh,
4432 MWL_FREQ_BAND_2DOT4GHZ, MWL_CH_20_MHz_WIDTH, &ci) == 0) {
4433 memset(bands, 0, sizeof(bands));
4434 setbit(bands, IEEE80211_MODE_11B);
4435 setbit(bands, IEEE80211_MODE_11G);
4436 setbit(bands, IEEE80211_MODE_11NG);
4437 addchannels(chans, maxchans, nchans, ci, bands);
4438 }
4439 if (mwl_hal_getchannelinfo(sc->sc_mh,
4440 MWL_FREQ_BAND_5GHZ, MWL_CH_20_MHz_WIDTH, &ci) == 0) {
4441 memset(bands, 0, sizeof(bands));
4442 setbit(bands, IEEE80211_MODE_11A);
4443 setbit(bands, IEEE80211_MODE_11NA);
4444 addchannels(chans, maxchans, nchans, ci, bands);
4445 }
4446 if (mwl_hal_getchannelinfo(sc->sc_mh,
4447 MWL_FREQ_BAND_2DOT4GHZ, MWL_CH_40_MHz_WIDTH, &ci) == 0)
4448 addht40channels(chans, maxchans, nchans, ci, IEEE80211_CHAN_HTG);
4449 if (mwl_hal_getchannelinfo(sc->sc_mh,
4450 MWL_FREQ_BAND_5GHZ, MWL_CH_40_MHz_WIDTH, &ci) == 0)
4451 addht40channels(chans, maxchans, nchans, ci, IEEE80211_CHAN_HTA);
4452 }
4453
4454 static void
mwl_getradiocaps(struct ieee80211com * ic,int maxchans,int * nchans,struct ieee80211_channel chans[])4455 mwl_getradiocaps(struct ieee80211com *ic,
4456 int maxchans, int *nchans, struct ieee80211_channel chans[])
4457 {
4458 struct mwl_softc *sc = ic->ic_softc;
4459
4460 getchannels(sc, maxchans, nchans, chans);
4461 }
4462
4463 static int
mwl_getchannels(struct mwl_softc * sc)4464 mwl_getchannels(struct mwl_softc *sc)
4465 {
4466 struct ieee80211com *ic = &sc->sc_ic;
4467
4468 /*
4469 * Use the channel info from the hal to craft the
4470 * channel list for net80211. Note that we pass up
4471 * an unsorted list; net80211 will sort it for us.
4472 */
4473 memset(ic->ic_channels, 0, sizeof(ic->ic_channels));
4474 ic->ic_nchans = 0;
4475 getchannels(sc, IEEE80211_CHAN_MAX, &ic->ic_nchans, ic->ic_channels);
4476
4477 ic->ic_regdomain.regdomain = SKU_DEBUG;
4478 ic->ic_regdomain.country = CTRY_DEFAULT;
4479 ic->ic_regdomain.location = 'I';
4480 ic->ic_regdomain.isocc[0] = ' '; /* XXX? */
4481 ic->ic_regdomain.isocc[1] = ' ';
4482 return (ic->ic_nchans == 0 ? EIO : 0);
4483 }
4484 #undef IEEE80211_CHAN_HTA
4485 #undef IEEE80211_CHAN_HTG
4486
4487 #ifdef MWL_DEBUG
4488 static void
mwl_printrxbuf(const struct mwl_rxbuf * bf,u_int ix)4489 mwl_printrxbuf(const struct mwl_rxbuf *bf, u_int ix)
4490 {
4491 const struct mwl_rxdesc *ds = bf->bf_desc;
4492 uint32_t status = le32toh(ds->Status);
4493
4494 printf("R[%2u] (DS.V:%p DS.P:0x%jx) NEXT:%08x DATA:%08x RC:%02x%s\n"
4495 " STAT:%02x LEN:%04x RSSI:%02x CHAN:%02x RATE:%02x QOS:%04x HT:%04x\n",
4496 ix, ds, (uintmax_t)bf->bf_daddr, le32toh(ds->pPhysNext),
4497 le32toh(ds->pPhysBuffData), ds->RxControl,
4498 ds->RxControl != EAGLE_RXD_CTRL_DRIVER_OWN ?
4499 "" : (status & EAGLE_RXD_STATUS_OK) ? " *" : " !",
4500 ds->Status, le16toh(ds->PktLen), ds->RSSI, ds->Channel,
4501 ds->Rate, le16toh(ds->QosCtrl), le16toh(ds->HtSig2));
4502 }
4503
4504 static void
mwl_printtxbuf(const struct mwl_txbuf * bf,u_int qnum,u_int ix)4505 mwl_printtxbuf(const struct mwl_txbuf *bf, u_int qnum, u_int ix)
4506 {
4507 const struct mwl_txdesc *ds = bf->bf_desc;
4508 uint32_t status = le32toh(ds->Status);
4509
4510 printf("Q%u[%3u]", qnum, ix);
4511 printf(" (DS.V:%p DS.P:0x%jx)\n", ds, (uintmax_t)bf->bf_daddr);
4512 printf(" NEXT:%08x DATA:%08x LEN:%04x STAT:%08x%s\n",
4513 le32toh(ds->pPhysNext),
4514 le32toh(ds->PktPtr), le16toh(ds->PktLen), status,
4515 status & EAGLE_TXD_STATUS_USED ?
4516 "" : (status & 3) != 0 ? " *" : " !");
4517 printf(" RATE:%02x PRI:%x QOS:%04x SAP:%08x FORMAT:%04x\n",
4518 ds->DataRate, ds->TxPriority, le16toh(ds->QosCtrl),
4519 le32toh(ds->SapPktInfo), le16toh(ds->Format));
4520 #if MWL_TXDESC > 1
4521 printf(" MULTIFRAMES:%u LEN:%04x %04x %04x %04x %04x %04x\n"
4522 , le32toh(ds->multiframes)
4523 , le16toh(ds->PktLenArray[0]), le16toh(ds->PktLenArray[1])
4524 , le16toh(ds->PktLenArray[2]), le16toh(ds->PktLenArray[3])
4525 , le16toh(ds->PktLenArray[4]), le16toh(ds->PktLenArray[5])
4526 );
4527 printf(" DATA:%08x %08x %08x %08x %08x %08x\n"
4528 , le32toh(ds->PktPtrArray[0]), le32toh(ds->PktPtrArray[1])
4529 , le32toh(ds->PktPtrArray[2]), le32toh(ds->PktPtrArray[3])
4530 , le32toh(ds->PktPtrArray[4]), le32toh(ds->PktPtrArray[5])
4531 );
4532 #endif
4533 #if 0
4534 { const uint8_t *cp = (const uint8_t *) ds;
4535 int i;
4536 for (i = 0; i < sizeof(struct mwl_txdesc); i++) {
4537 printf("%02x ", cp[i]);
4538 if (((i+1) % 16) == 0)
4539 printf("\n");
4540 }
4541 printf("\n");
4542 }
4543 #endif
4544 }
4545 #endif /* MWL_DEBUG */
4546
4547 #if 0
4548 static void
4549 mwl_txq_dump(struct mwl_txq *txq)
4550 {
4551 struct mwl_txbuf *bf;
4552 int i = 0;
4553
4554 MWL_TXQ_LOCK(txq);
4555 STAILQ_FOREACH(bf, &txq->active, bf_list) {
4556 struct mwl_txdesc *ds = bf->bf_desc;
4557 MWL_TXDESC_SYNC(txq, ds,
4558 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
4559 #ifdef MWL_DEBUG
4560 mwl_printtxbuf(bf, txq->qnum, i);
4561 #endif
4562 i++;
4563 }
4564 MWL_TXQ_UNLOCK(txq);
4565 }
4566 #endif
4567
4568 static void
mwl_watchdog(void * arg)4569 mwl_watchdog(void *arg)
4570 {
4571 struct mwl_softc *sc = arg;
4572
4573 callout_reset(&sc->sc_watchdog, hz, mwl_watchdog, sc);
4574 if (sc->sc_tx_timer == 0 || --sc->sc_tx_timer > 0)
4575 return;
4576
4577 if (sc->sc_running && !sc->sc_invalid) {
4578 if (mwl_hal_setkeepalive(sc->sc_mh))
4579 device_printf(sc->sc_dev,
4580 "transmit timeout (firmware hung?)\n");
4581 else
4582 device_printf(sc->sc_dev,
4583 "transmit timeout\n");
4584 #if 0
4585 mwl_reset(sc);
4586 mwl_txq_dump(&sc->sc_txq[0]);/*XXX*/
4587 #endif
4588 counter_u64_add(sc->sc_ic.ic_oerrors, 1);
4589 sc->sc_stats.mst_watchdog++;
4590 }
4591 }
4592
4593 #ifdef MWL_DIAGAPI
4594 /*
4595 * Diagnostic interface to the HAL. This is used by various
4596 * tools to do things like retrieve register contents for
4597 * debugging. The mechanism is intentionally opaque so that
4598 * it can change frequently w/o concern for compatibility.
4599 */
4600 static int
mwl_ioctl_diag(struct mwl_softc * sc,struct mwl_diag * md)4601 mwl_ioctl_diag(struct mwl_softc *sc, struct mwl_diag *md)
4602 {
4603 struct mwl_hal *mh = sc->sc_mh;
4604 u_int id = md->md_id & MWL_DIAG_ID;
4605 void *indata = NULL;
4606 void *outdata = NULL;
4607 u_int32_t insize = md->md_in_size;
4608 u_int32_t outsize = md->md_out_size;
4609 int error = 0;
4610
4611 if (md->md_id & MWL_DIAG_IN) {
4612 /*
4613 * Copy in data.
4614 */
4615 indata = malloc(insize, M_TEMP, M_NOWAIT);
4616 if (indata == NULL) {
4617 error = ENOMEM;
4618 goto bad;
4619 }
4620 error = copyin(md->md_in_data, indata, insize);
4621 if (error)
4622 goto bad;
4623 }
4624 if (md->md_id & MWL_DIAG_DYN) {
4625 /*
4626 * Allocate a buffer for the results (otherwise the HAL
4627 * returns a pointer to a buffer where we can read the
4628 * results). Note that we depend on the HAL leaving this
4629 * pointer for us to use below in reclaiming the buffer;
4630 * may want to be more defensive.
4631 */
4632 outdata = malloc(outsize, M_TEMP, M_NOWAIT);
4633 if (outdata == NULL) {
4634 error = ENOMEM;
4635 goto bad;
4636 }
4637 }
4638 if (mwl_hal_getdiagstate(mh, id, indata, insize, &outdata, &outsize)) {
4639 if (outsize < md->md_out_size)
4640 md->md_out_size = outsize;
4641 if (outdata != NULL)
4642 error = copyout(outdata, md->md_out_data,
4643 md->md_out_size);
4644 } else {
4645 error = EINVAL;
4646 }
4647 bad:
4648 if ((md->md_id & MWL_DIAG_IN) && indata != NULL)
4649 free(indata, M_TEMP);
4650 if ((md->md_id & MWL_DIAG_DYN) && outdata != NULL)
4651 free(outdata, M_TEMP);
4652 return error;
4653 }
4654
4655 static int
mwl_ioctl_reset(struct mwl_softc * sc,struct mwl_diag * md)4656 mwl_ioctl_reset(struct mwl_softc *sc, struct mwl_diag *md)
4657 {
4658 struct mwl_hal *mh = sc->sc_mh;
4659 int error;
4660
4661 MWL_LOCK_ASSERT(sc);
4662
4663 if (md->md_id == 0 && mwl_hal_fwload(mh, NULL) != 0) {
4664 device_printf(sc->sc_dev, "unable to load firmware\n");
4665 return EIO;
4666 }
4667 if (mwl_hal_gethwspecs(mh, &sc->sc_hwspecs) != 0) {
4668 device_printf(sc->sc_dev, "unable to fetch h/w specs\n");
4669 return EIO;
4670 }
4671 error = mwl_setupdma(sc);
4672 if (error != 0) {
4673 /* NB: mwl_setupdma prints a msg */
4674 return error;
4675 }
4676 /*
4677 * Reset tx/rx data structures; after reload we must
4678 * re-start the driver's notion of the next xmit/recv.
4679 */
4680 mwl_draintxq(sc); /* clear pending frames */
4681 mwl_resettxq(sc); /* rebuild tx q lists */
4682 sc->sc_rxnext = NULL; /* force rx to start at the list head */
4683 return 0;
4684 }
4685 #endif /* MWL_DIAGAPI */
4686
4687 static void
mwl_parent(struct ieee80211com * ic)4688 mwl_parent(struct ieee80211com *ic)
4689 {
4690 struct mwl_softc *sc = ic->ic_softc;
4691 int startall = 0;
4692
4693 MWL_LOCK(sc);
4694 if (ic->ic_nrunning > 0) {
4695 if (sc->sc_running) {
4696 /*
4697 * To avoid rescanning another access point,
4698 * do not call mwl_init() here. Instead,
4699 * only reflect promisc mode settings.
4700 */
4701 mwl_mode_init(sc);
4702 } else {
4703 /*
4704 * Beware of being called during attach/detach
4705 * to reset promiscuous mode. In that case we
4706 * will still be marked UP but not RUNNING.
4707 * However trying to re-init the interface
4708 * is the wrong thing to do as we've already
4709 * torn down much of our state. There's
4710 * probably a better way to deal with this.
4711 */
4712 if (!sc->sc_invalid) {
4713 mwl_init(sc); /* XXX lose error */
4714 startall = 1;
4715 }
4716 }
4717 } else
4718 mwl_stop(sc);
4719 MWL_UNLOCK(sc);
4720 if (startall)
4721 ieee80211_start_all(ic);
4722 }
4723
4724 static int
mwl_ioctl(struct ieee80211com * ic,u_long cmd,void * data)4725 mwl_ioctl(struct ieee80211com *ic, u_long cmd, void *data)
4726 {
4727 struct mwl_softc *sc = ic->ic_softc;
4728 struct ifreq *ifr = data;
4729 int error = 0;
4730
4731 switch (cmd) {
4732 case SIOCGMVSTATS:
4733 mwl_hal_gethwstats(sc->sc_mh, &sc->sc_stats.hw_stats);
4734 #if 0
4735 /* NB: embed these numbers to get a consistent view */
4736 sc->sc_stats.mst_tx_packets =
4737 ifp->if_get_counter(ifp, IFCOUNTER_OPACKETS);
4738 sc->sc_stats.mst_rx_packets =
4739 ifp->if_get_counter(ifp, IFCOUNTER_IPACKETS);
4740 #endif
4741 /*
4742 * NB: Drop the softc lock in case of a page fault;
4743 * we'll accept any potential inconsisentcy in the
4744 * statistics. The alternative is to copy the data
4745 * to a local structure.
4746 */
4747 return (copyout(&sc->sc_stats, ifr_data_get_ptr(ifr),
4748 sizeof (sc->sc_stats)));
4749 #ifdef MWL_DIAGAPI
4750 case SIOCGMVDIAG:
4751 /* XXX check privs */
4752 return mwl_ioctl_diag(sc, (struct mwl_diag *) ifr);
4753 case SIOCGMVRESET:
4754 /* XXX check privs */
4755 MWL_LOCK(sc);
4756 error = mwl_ioctl_reset(sc,(struct mwl_diag *) ifr);
4757 MWL_UNLOCK(sc);
4758 break;
4759 #endif /* MWL_DIAGAPI */
4760 default:
4761 error = ENOTTY;
4762 break;
4763 }
4764 return (error);
4765 }
4766
4767 #ifdef MWL_DEBUG
4768 static int
mwl_sysctl_debug(SYSCTL_HANDLER_ARGS)4769 mwl_sysctl_debug(SYSCTL_HANDLER_ARGS)
4770 {
4771 struct mwl_softc *sc = arg1;
4772 int debug, error;
4773
4774 debug = sc->sc_debug | (mwl_hal_getdebug(sc->sc_mh) << 24);
4775 error = sysctl_handle_int(oidp, &debug, 0, req);
4776 if (error || !req->newptr)
4777 return error;
4778 mwl_hal_setdebug(sc->sc_mh, debug >> 24);
4779 sc->sc_debug = debug & 0x00ffffff;
4780 return 0;
4781 }
4782 #endif /* MWL_DEBUG */
4783
4784 static void
mwl_sysctlattach(struct mwl_softc * sc)4785 mwl_sysctlattach(struct mwl_softc *sc)
4786 {
4787 #ifdef MWL_DEBUG
4788 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
4789 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
4790
4791 sc->sc_debug = mwl_debug;
4792 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "debug",
4793 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
4794 mwl_sysctl_debug, "I", "control debugging printfs");
4795 #endif
4796 }
4797
4798 /*
4799 * Announce various information on device/driver attach.
4800 */
4801 static void
mwl_announce(struct mwl_softc * sc)4802 mwl_announce(struct mwl_softc *sc)
4803 {
4804
4805 device_printf(sc->sc_dev, "Rev A%d hardware, v%d.%d.%d.%d firmware (regioncode %d)\n",
4806 sc->sc_hwspecs.hwVersion,
4807 (sc->sc_hwspecs.fwReleaseNumber>>24) & 0xff,
4808 (sc->sc_hwspecs.fwReleaseNumber>>16) & 0xff,
4809 (sc->sc_hwspecs.fwReleaseNumber>>8) & 0xff,
4810 (sc->sc_hwspecs.fwReleaseNumber>>0) & 0xff,
4811 sc->sc_hwspecs.regionCode);
4812 sc->sc_fwrelease = sc->sc_hwspecs.fwReleaseNumber;
4813
4814 if (bootverbose) {
4815 int i;
4816 for (i = 0; i <= WME_AC_VO; i++) {
4817 struct mwl_txq *txq = sc->sc_ac2q[i];
4818 device_printf(sc->sc_dev, "Use hw queue %u for %s traffic\n",
4819 txq->qnum, ieee80211_wme_acnames[i]);
4820 }
4821 }
4822 if (bootverbose || mwl_rxdesc != MWL_RXDESC)
4823 device_printf(sc->sc_dev, "using %u rx descriptors\n", mwl_rxdesc);
4824 if (bootverbose || mwl_rxbuf != MWL_RXBUF)
4825 device_printf(sc->sc_dev, "using %u rx buffers\n", mwl_rxbuf);
4826 if (bootverbose || mwl_txbuf != MWL_TXBUF)
4827 device_printf(sc->sc_dev, "using %u tx buffers\n", mwl_txbuf);
4828 if (bootverbose && mwl_hal_ismbsscapable(sc->sc_mh))
4829 device_printf(sc->sc_dev, "multi-bss support\n");
4830 #ifdef MWL_TX_NODROP
4831 if (bootverbose)
4832 device_printf(sc->sc_dev, "no tx drop\n");
4833 #endif
4834 }
4835