FreeBSD/Linux Kernel Cross Reference
sys/dev/malo/if_malo.c
1 /*-
2 * Copyright (c) 2008 Weongyo Jeong <weongyo@freebsd.org>
3 * Copyright (c) 2007 Marvell Semiconductor, Inc.
4 * Copyright (c) 2007 Sam Leffler, Errno Consulting
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer,
12 * without modification.
13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
14 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
15 * redistribution must be conditioned upon including a substantially
16 * similar Disclaimer requirement for further binary redistribution.
17 *
18 * NO WARRANTY
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
22 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
23 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
24 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
27 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
29 * THE POSSIBILITY OF SUCH DAMAGES.
30 */
31
32 #include <sys/cdefs.h>
33 #ifdef __FreeBSD__
34 __FBSDID("$FreeBSD: releng/8.1/sys/dev/malo/if_malo.c 203786 2010-02-11 18:34:06Z mjacob $");
35 #endif
36
37 #include "opt_malo.h"
38
39 #include <sys/param.h>
40 #include <sys/endian.h>
41 #include <sys/kernel.h>
42 #include <sys/socket.h>
43 #include <sys/sockio.h>
44 #include <sys/sysctl.h>
45 #include <sys/taskqueue.h>
46
47 #include <machine/bus.h>
48 #include <sys/bus.h>
49
50 #include <net/if.h>
51 #include <net/if_dl.h>
52 #include <net/if_media.h>
53 #include <net/if_types.h>
54 #include <net/ethernet.h>
55
56 #include <net80211/ieee80211_var.h>
57 #include <net80211/ieee80211_regdomain.h>
58
59 #include <net/bpf.h>
60
61 #include <dev/malo/if_malo.h>
62
63 SYSCTL_NODE(_hw, OID_AUTO, malo, CTLFLAG_RD, 0,
64 "Marvell 88w8335 driver parameters");
65
66 static int malo_txcoalesce = 8; /* # tx pkts to q before poking f/w*/
67 SYSCTL_INT(_hw_malo, OID_AUTO, txcoalesce, CTLFLAG_RW, &malo_txcoalesce,
68 0, "tx buffers to send at once");
69 TUNABLE_INT("hw.malo.txcoalesce", &malo_txcoalesce);
70 static int malo_rxbuf = MALO_RXBUF; /* # rx buffers to allocate */
71 SYSCTL_INT(_hw_malo, OID_AUTO, rxbuf, CTLFLAG_RW, &malo_rxbuf,
72 0, "rx buffers allocated");
73 TUNABLE_INT("hw.malo.rxbuf", &malo_rxbuf);
74 static int malo_rxquota = MALO_RXBUF; /* # max buffers to process */
75 SYSCTL_INT(_hw_malo, OID_AUTO, rxquota, CTLFLAG_RW, &malo_rxquota,
76 0, "max rx buffers to process per interrupt");
77 TUNABLE_INT("hw.malo.rxquota", &malo_rxquota);
78 static int malo_txbuf = MALO_TXBUF; /* # tx buffers to allocate */
79 SYSCTL_INT(_hw_malo, OID_AUTO, txbuf, CTLFLAG_RW, &malo_txbuf,
80 0, "tx buffers allocated");
81 TUNABLE_INT("hw.malo.txbuf", &malo_txbuf);
82
83 #ifdef MALO_DEBUG
84 static int malo_debug = 0;
85 SYSCTL_INT(_hw_malo, OID_AUTO, debug, CTLFLAG_RW, &malo_debug,
86 0, "control debugging printfs");
87 TUNABLE_INT("hw.malo.debug", &malo_debug);
88 enum {
89 MALO_DEBUG_XMIT = 0x00000001, /* basic xmit operation */
90 MALO_DEBUG_XMIT_DESC = 0x00000002, /* xmit descriptors */
91 MALO_DEBUG_RECV = 0x00000004, /* basic recv operation */
92 MALO_DEBUG_RECV_DESC = 0x00000008, /* recv descriptors */
93 MALO_DEBUG_RESET = 0x00000010, /* reset processing */
94 MALO_DEBUG_INTR = 0x00000040, /* ISR */
95 MALO_DEBUG_TX_PROC = 0x00000080, /* tx ISR proc */
96 MALO_DEBUG_RX_PROC = 0x00000100, /* rx ISR proc */
97 MALO_DEBUG_STATE = 0x00000400, /* 802.11 state transitions */
98 MALO_DEBUG_NODE = 0x00000800, /* node management */
99 MALO_DEBUG_RECV_ALL = 0x00001000, /* trace all frames (beacons) */
100 MALO_DEBUG_FW = 0x00008000, /* firmware */
101 MALO_DEBUG_ANY = 0xffffffff
102 };
103 #define IS_BEACON(wh) \
104 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK | \
105 IEEE80211_FC0_SUBTYPE_MASK)) == \
106 (IEEE80211_FC0_TYPE_MGT|IEEE80211_FC0_SUBTYPE_BEACON))
107 #define IFF_DUMPPKTS_RECV(sc, wh) \
108 (((sc->malo_debug & MALO_DEBUG_RECV) && \
109 ((sc->malo_debug & MALO_DEBUG_RECV_ALL) || !IS_BEACON(wh))) || \
110 (sc->malo_ifp->if_flags & (IFF_DEBUG|IFF_LINK2)) == \
111 (IFF_DEBUG|IFF_LINK2))
112 #define IFF_DUMPPKTS_XMIT(sc) \
113 ((sc->malo_debug & MALO_DEBUG_XMIT) || \
114 (sc->malo_ifp->if_flags & (IFF_DEBUG | IFF_LINK2)) == \
115 (IFF_DEBUG | IFF_LINK2))
116 #define DPRINTF(sc, m, fmt, ...) do { \
117 if (sc->malo_debug & (m)) \
118 printf(fmt, __VA_ARGS__); \
119 } while (0)
120 #else
121 #define DPRINTF(sc, m, fmt, ...) do { \
122 (void) sc; \
123 } while (0)
124 #endif
125
126 MALLOC_DEFINE(M_MALODEV, "malodev", "malo driver dma buffers");
127
128 static struct ieee80211vap *malo_vap_create(struct ieee80211com *ic,
129 const char name[IFNAMSIZ], int unit, int opmode, int flags,
130 const uint8_t bssid[IEEE80211_ADDR_LEN],
131 const uint8_t mac[IEEE80211_ADDR_LEN]);
132 static void malo_vap_delete(struct ieee80211vap *);
133 static int malo_dma_setup(struct malo_softc *);
134 static int malo_setup_hwdma(struct malo_softc *);
135 static void malo_txq_init(struct malo_softc *, struct malo_txq *, int);
136 static void malo_tx_cleanupq(struct malo_softc *, struct malo_txq *);
137 static void malo_start(struct ifnet *);
138 static void malo_watchdog(struct ifnet *);
139 static int malo_ioctl(struct ifnet *, u_long, caddr_t);
140 static void malo_updateslot(struct ifnet *);
141 static int malo_newstate(struct ieee80211vap *, enum ieee80211_state, int);
142 static void malo_scan_start(struct ieee80211com *);
143 static void malo_scan_end(struct ieee80211com *);
144 static void malo_set_channel(struct ieee80211com *);
145 static int malo_raw_xmit(struct ieee80211_node *, struct mbuf *,
146 const struct ieee80211_bpf_params *);
147 static void malo_sysctlattach(struct malo_softc *);
148 static void malo_announce(struct malo_softc *);
149 static void malo_dma_cleanup(struct malo_softc *);
150 static void malo_stop_locked(struct ifnet *, int);
151 static int malo_chan_set(struct malo_softc *, struct ieee80211_channel *);
152 static int malo_mode_init(struct malo_softc *);
153 static void malo_tx_proc(void *, int);
154 static void malo_rx_proc(void *, int);
155 static void malo_init(void *);
156
157 /*
158 * Read/Write shorthands for accesses to BAR 0. Note that all BAR 1
159 * operations are done in the "hal" except getting H/W MAC address at
160 * malo_attach and there should be no reference to them here.
161 */
162 static uint32_t
163 malo_bar0_read4(struct malo_softc *sc, bus_size_t off)
164 {
165 return bus_space_read_4(sc->malo_io0t, sc->malo_io0h, off);
166 }
167
168 static void
169 malo_bar0_write4(struct malo_softc *sc, bus_size_t off, uint32_t val)
170 {
171 DPRINTF(sc, MALO_DEBUG_FW, "%s: off 0x%zx val 0x%x\n",
172 __func__, off, val);
173
174 bus_space_write_4(sc->malo_io0t, sc->malo_io0h, off, val);
175 }
176
177 int
178 malo_attach(uint16_t devid, struct malo_softc *sc)
179 {
180 int error;
181 struct ieee80211com *ic;
182 struct ifnet *ifp;
183 struct malo_hal *mh;
184 uint8_t bands;
185
186 ifp = sc->malo_ifp = if_alloc(IFT_IEEE80211);
187 if (ifp == NULL) {
188 device_printf(sc->malo_dev, "can not if_alloc()\n");
189 return ENOSPC;
190 }
191 ic = ifp->if_l2com;
192
193 MALO_LOCK_INIT(sc);
194
195 /* set these up early for if_printf use */
196 if_initname(ifp, device_get_name(sc->malo_dev),
197 device_get_unit(sc->malo_dev));
198
199 mh = malo_hal_attach(sc->malo_dev, devid,
200 sc->malo_io1h, sc->malo_io1t, sc->malo_dmat);
201 if (mh == NULL) {
202 if_printf(ifp, "unable to attach HAL\n");
203 error = EIO;
204 goto bad;
205 }
206 sc->malo_mh = mh;
207
208 /*
209 * Load firmware so we can get setup. We arbitrarily pick station
210 * firmware; we'll re-load firmware as needed so setting up
211 * the wrong mode isn't a big deal.
212 */
213 error = malo_hal_fwload(mh, "malo8335-h", "malo8335-m");
214 if (error != 0) {
215 if_printf(ifp, "unable to setup firmware\n");
216 goto bad1;
217 }
218 /* XXX gethwspecs() extracts correct informations? not maybe! */
219 error = malo_hal_gethwspecs(mh, &sc->malo_hwspecs);
220 if (error != 0) {
221 if_printf(ifp, "unable to fetch h/w specs\n");
222 goto bad1;
223 }
224
225 DPRINTF(sc, MALO_DEBUG_FW,
226 "malo_hal_gethwspecs: hwversion 0x%x hostif 0x%x"
227 "maxnum_wcb 0x%x maxnum_mcaddr 0x%x maxnum_tx_wcb 0x%x"
228 "regioncode 0x%x num_antenna 0x%x fw_releasenum 0x%x"
229 "wcbbase0 0x%x rxdesc_read 0x%x rxdesc_write 0x%x"
230 "ul_fw_awakecookie 0x%x w[4] = %x %x %x %x",
231 sc->malo_hwspecs.hwversion,
232 sc->malo_hwspecs.hostinterface, sc->malo_hwspecs.maxnum_wcb,
233 sc->malo_hwspecs.maxnum_mcaddr, sc->malo_hwspecs.maxnum_tx_wcb,
234 sc->malo_hwspecs.regioncode, sc->malo_hwspecs.num_antenna,
235 sc->malo_hwspecs.fw_releasenum, sc->malo_hwspecs.wcbbase0,
236 sc->malo_hwspecs.rxdesc_read, sc->malo_hwspecs.rxdesc_write,
237 sc->malo_hwspecs.ul_fw_awakecookie,
238 sc->malo_hwspecs.wcbbase[0], sc->malo_hwspecs.wcbbase[1],
239 sc->malo_hwspecs.wcbbase[2], sc->malo_hwspecs.wcbbase[3]);
240
241 /* NB: firmware looks that it does not export regdomain info API. */
242 bands = 0;
243 setbit(&bands, IEEE80211_MODE_11B);
244 setbit(&bands, IEEE80211_MODE_11G);
245 ieee80211_init_channels(ic, NULL, &bands);
246
247 sc->malo_txantenna = 0x2; /* h/w default */
248 sc->malo_rxantenna = 0xffff; /* h/w default */
249
250 /*
251 * Allocate tx + rx descriptors and populate the lists.
252 * We immediately push the information to the firmware
253 * as otherwise it gets upset.
254 */
255 error = malo_dma_setup(sc);
256 if (error != 0) {
257 if_printf(ifp, "failed to setup descriptors: %d\n", error);
258 goto bad1;
259 }
260 error = malo_setup_hwdma(sc); /* push to firmware */
261 if (error != 0) /* NB: malo_setupdma prints msg */
262 goto bad2;
263
264 sc->malo_tq = taskqueue_create_fast("malo_taskq", M_NOWAIT,
265 taskqueue_thread_enqueue, &sc->malo_tq);
266 taskqueue_start_threads(&sc->malo_tq, 1, PI_NET,
267 "%s taskq", ifp->if_xname);
268
269 TASK_INIT(&sc->malo_rxtask, 0, malo_rx_proc, sc);
270 TASK_INIT(&sc->malo_txtask, 0, malo_tx_proc, sc);
271
272 ifp->if_softc = sc;
273 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST;
274 ifp->if_start = malo_start;
275 ifp->if_watchdog = malo_watchdog;
276 ifp->if_ioctl = malo_ioctl;
277 ifp->if_init = malo_init;
278 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
279 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
280 IFQ_SET_READY(&ifp->if_snd);
281
282 ic->ic_ifp = ifp;
283 /* XXX not right but it's not used anywhere important */
284 ic->ic_phytype = IEEE80211_T_OFDM;
285 ic->ic_opmode = IEEE80211_M_STA;
286 ic->ic_caps =
287 IEEE80211_C_STA /* station mode supported */
288 | IEEE80211_C_BGSCAN /* capable of bg scanning */
289 | IEEE80211_C_MONITOR /* monitor mode */
290 | IEEE80211_C_SHPREAMBLE /* short preamble supported */
291 | IEEE80211_C_SHSLOT /* short slot time supported */
292 | IEEE80211_C_TXPMGT /* capable of txpow mgt */
293 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */
294 ;
295
296 /*
297 * Transmit requires space in the packet for a special format transmit
298 * record and optional padding between this record and the payload.
299 * Ask the net80211 layer to arrange this when encapsulating
300 * packets so we can add it efficiently.
301 */
302 ic->ic_headroom = sizeof(struct malo_txrec) -
303 sizeof(struct ieee80211_frame);
304
305 /* call MI attach routine. */
306 ieee80211_ifattach(ic, sc->malo_hwspecs.macaddr);
307 /* override default methods */
308 ic->ic_vap_create = malo_vap_create;
309 ic->ic_vap_delete = malo_vap_delete;
310 ic->ic_raw_xmit = malo_raw_xmit;
311 ic->ic_updateslot = malo_updateslot;
312
313 ic->ic_scan_start = malo_scan_start;
314 ic->ic_scan_end = malo_scan_end;
315 ic->ic_set_channel = malo_set_channel;
316
317 sc->malo_invalid = 0; /* ready to go, enable int handling */
318
319 ieee80211_radiotap_attach(ic,
320 &sc->malo_tx_th.wt_ihdr, sizeof(sc->malo_tx_th),
321 MALO_TX_RADIOTAP_PRESENT,
322 &sc->malo_rx_th.wr_ihdr, sizeof(sc->malo_rx_th),
323 MALO_RX_RADIOTAP_PRESENT);
324
325 /*
326 * Setup dynamic sysctl's.
327 */
328 malo_sysctlattach(sc);
329
330 if (bootverbose)
331 ieee80211_announce(ic);
332 malo_announce(sc);
333
334 return 0;
335 bad2:
336 malo_dma_cleanup(sc);
337 bad1:
338 malo_hal_detach(mh);
339 bad:
340 if_free(ifp);
341 sc->malo_invalid = 1;
342
343 return error;
344 }
345
346 static struct ieee80211vap *
347 malo_vap_create(struct ieee80211com *ic,
348 const char name[IFNAMSIZ], int unit, int opmode, int flags,
349 const uint8_t bssid[IEEE80211_ADDR_LEN],
350 const uint8_t mac[IEEE80211_ADDR_LEN])
351 {
352 struct ifnet *ifp = ic->ic_ifp;
353 struct malo_vap *mvp;
354 struct ieee80211vap *vap;
355
356 if (!TAILQ_EMPTY(&ic->ic_vaps)) {
357 if_printf(ifp, "multiple vaps not supported\n");
358 return NULL;
359 }
360 switch (opmode) {
361 case IEEE80211_M_STA:
362 if (opmode == IEEE80211_M_STA)
363 flags |= IEEE80211_CLONE_NOBEACONS;
364 /* fall thru... */
365 case IEEE80211_M_MONITOR:
366 break;
367 default:
368 if_printf(ifp, "%s mode not supported\n",
369 ieee80211_opmode_name[opmode]);
370 return NULL; /* unsupported */
371 }
372 mvp = (struct malo_vap *) malloc(sizeof(struct malo_vap),
373 M_80211_VAP, M_NOWAIT | M_ZERO);
374 if (mvp == NULL) {
375 if_printf(ifp, "cannot allocate vap state block\n");
376 return NULL;
377 }
378 vap = &mvp->malo_vap;
379 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
380
381 /* override state transition machine */
382 mvp->malo_newstate = vap->iv_newstate;
383 vap->iv_newstate = malo_newstate;
384
385 /* complete setup */
386 ieee80211_vap_attach(vap,
387 ieee80211_media_change, ieee80211_media_status);
388 ic->ic_opmode = opmode;
389 return vap;
390 }
391
392 static void
393 malo_vap_delete(struct ieee80211vap *vap)
394 {
395 struct malo_vap *mvp = MALO_VAP(vap);
396
397 ieee80211_vap_detach(vap);
398 free(mvp, M_80211_VAP);
399 }
400
401 int
402 malo_intr(void *arg)
403 {
404 struct malo_softc *sc = arg;
405 struct malo_hal *mh = sc->malo_mh;
406 uint32_t status;
407
408 if (sc->malo_invalid) {
409 /*
410 * The hardware is not ready/present, don't touch anything.
411 * Note this can happen early on if the IRQ is shared.
412 */
413 DPRINTF(sc, MALO_DEBUG_ANY, "%s: invalid; ignored\n", __func__);
414 return (FILTER_STRAY);
415 }
416
417 /*
418 * Figure out the reason(s) for the interrupt.
419 */
420 malo_hal_getisr(mh, &status); /* NB: clears ISR too */
421 if (status == 0) /* must be a shared irq */
422 return (FILTER_STRAY);
423
424 DPRINTF(sc, MALO_DEBUG_INTR, "%s: status 0x%x imask 0x%x\n",
425 __func__, status, sc->malo_imask);
426
427 if (status & MALO_A2HRIC_BIT_RX_RDY)
428 taskqueue_enqueue_fast(sc->malo_tq, &sc->malo_rxtask);
429 if (status & MALO_A2HRIC_BIT_TX_DONE)
430 taskqueue_enqueue_fast(sc->malo_tq, &sc->malo_txtask);
431 if (status & MALO_A2HRIC_BIT_OPC_DONE)
432 malo_hal_cmddone(mh);
433 if (status & MALO_A2HRIC_BIT_MAC_EVENT)
434 ;
435 if (status & MALO_A2HRIC_BIT_RX_PROBLEM)
436 ;
437 if (status & MALO_A2HRIC_BIT_ICV_ERROR) {
438 /* TKIP ICV error */
439 sc->malo_stats.mst_rx_badtkipicv++;
440 }
441 #ifdef MALO_DEBUG
442 if (((status | sc->malo_imask) ^ sc->malo_imask) != 0)
443 DPRINTF(sc, MALO_DEBUG_INTR,
444 "%s: can't handle interrupt status 0x%x\n",
445 __func__, status);
446 #endif
447 return (FILTER_HANDLED);
448 }
449
450 static void
451 malo_load_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
452 {
453 bus_addr_t *paddr = (bus_addr_t*) arg;
454
455 KASSERT(error == 0, ("error %u on bus_dma callback", error));
456
457 *paddr = segs->ds_addr;
458 }
459
460 static int
461 malo_desc_setup(struct malo_softc *sc, const char *name,
462 struct malo_descdma *dd,
463 int nbuf, size_t bufsize, int ndesc, size_t descsize)
464 {
465 int error;
466 struct ifnet *ifp = sc->malo_ifp;
467 uint8_t *ds;
468
469 DPRINTF(sc, MALO_DEBUG_RESET,
470 "%s: %s DMA: %u bufs (%ju) %u desc/buf (%ju)\n",
471 __func__, name, nbuf, (uintmax_t) bufsize,
472 ndesc, (uintmax_t) descsize);
473
474 dd->dd_name = name;
475 dd->dd_desc_len = nbuf * ndesc * descsize;
476
477 /*
478 * Setup DMA descriptor area.
479 */
480 error = bus_dma_tag_create(bus_get_dma_tag(sc->malo_dev),/* parent */
481 PAGE_SIZE, 0, /* alignment, bounds */
482 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
483 BUS_SPACE_MAXADDR, /* highaddr */
484 NULL, NULL, /* filter, filterarg */
485 dd->dd_desc_len, /* maxsize */
486 1, /* nsegments */
487 dd->dd_desc_len, /* maxsegsize */
488 BUS_DMA_ALLOCNOW, /* flags */
489 NULL, /* lockfunc */
490 NULL, /* lockarg */
491 &dd->dd_dmat);
492 if (error != 0) {
493 if_printf(ifp, "cannot allocate %s DMA tag\n", dd->dd_name);
494 return error;
495 }
496
497 /* allocate descriptors */
498 error = bus_dmamap_create(dd->dd_dmat, BUS_DMA_NOWAIT, &dd->dd_dmamap);
499 if (error != 0) {
500 if_printf(ifp, "unable to create dmamap for %s descriptors, "
501 "error %u\n", dd->dd_name, error);
502 goto fail0;
503 }
504
505 error = bus_dmamem_alloc(dd->dd_dmat, (void**) &dd->dd_desc,
506 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &dd->dd_dmamap);
507 if (error != 0) {
508 if_printf(ifp, "unable to alloc memory for %u %s descriptors, "
509 "error %u\n", nbuf * ndesc, dd->dd_name, error);
510 goto fail1;
511 }
512
513 error = bus_dmamap_load(dd->dd_dmat, dd->dd_dmamap,
514 dd->dd_desc, dd->dd_desc_len,
515 malo_load_cb, &dd->dd_desc_paddr, BUS_DMA_NOWAIT);
516 if (error != 0) {
517 if_printf(ifp, "unable to map %s descriptors, error %u\n",
518 dd->dd_name, error);
519 goto fail2;
520 }
521
522 ds = dd->dd_desc;
523 memset(ds, 0, dd->dd_desc_len);
524 DPRINTF(sc, MALO_DEBUG_RESET, "%s: %s DMA map: %p (%lu) -> %p (%lu)\n",
525 __func__, dd->dd_name, ds, (u_long) dd->dd_desc_len,
526 (caddr_t) dd->dd_desc_paddr, /*XXX*/ (u_long) dd->dd_desc_len);
527
528 return 0;
529 fail2:
530 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap);
531 fail1:
532 bus_dmamap_destroy(dd->dd_dmat, dd->dd_dmamap);
533 fail0:
534 bus_dma_tag_destroy(dd->dd_dmat);
535 memset(dd, 0, sizeof(*dd));
536 return error;
537 }
538
539 #define DS2PHYS(_dd, _ds) \
540 ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc))
541
542 static int
543 malo_rxdma_setup(struct malo_softc *sc)
544 {
545 struct ifnet *ifp = sc->malo_ifp;
546 int error, bsize, i;
547 struct malo_rxbuf *bf;
548 struct malo_rxdesc *ds;
549
550 error = malo_desc_setup(sc, "rx", &sc->malo_rxdma,
551 malo_rxbuf, sizeof(struct malo_rxbuf),
552 1, sizeof(struct malo_rxdesc));
553 if (error != 0)
554 return error;
555
556 /*
557 * Allocate rx buffers and set them up.
558 */
559 bsize = malo_rxbuf * sizeof(struct malo_rxbuf);
560 bf = malloc(bsize, M_MALODEV, M_NOWAIT | M_ZERO);
561 if (bf == NULL) {
562 if_printf(ifp, "malloc of %u rx buffers failed\n", bsize);
563 return error;
564 }
565 sc->malo_rxdma.dd_bufptr = bf;
566
567 STAILQ_INIT(&sc->malo_rxbuf);
568 ds = sc->malo_rxdma.dd_desc;
569 for (i = 0; i < malo_rxbuf; i++, bf++, ds++) {
570 bf->bf_desc = ds;
571 bf->bf_daddr = DS2PHYS(&sc->malo_rxdma, ds);
572 error = bus_dmamap_create(sc->malo_dmat, BUS_DMA_NOWAIT,
573 &bf->bf_dmamap);
574 if (error != 0) {
575 if_printf(ifp, "%s: unable to dmamap for rx buffer, "
576 "error %d\n", __func__, error);
577 return error;
578 }
579 /* NB: tail is intentional to preserve descriptor order */
580 STAILQ_INSERT_TAIL(&sc->malo_rxbuf, bf, bf_list);
581 }
582 return 0;
583 }
584
585 static int
586 malo_txdma_setup(struct malo_softc *sc, struct malo_txq *txq)
587 {
588 struct ifnet *ifp = sc->malo_ifp;
589 int error, bsize, i;
590 struct malo_txbuf *bf;
591 struct malo_txdesc *ds;
592
593 error = malo_desc_setup(sc, "tx", &txq->dma,
594 malo_txbuf, sizeof(struct malo_txbuf),
595 MALO_TXDESC, sizeof(struct malo_txdesc));
596 if (error != 0)
597 return error;
598
599 /* allocate and setup tx buffers */
600 bsize = malo_txbuf * sizeof(struct malo_txbuf);
601 bf = malloc(bsize, M_MALODEV, M_NOWAIT | M_ZERO);
602 if (bf == NULL) {
603 if_printf(ifp, "malloc of %u tx buffers failed\n",
604 malo_txbuf);
605 return ENOMEM;
606 }
607 txq->dma.dd_bufptr = bf;
608
609 STAILQ_INIT(&txq->free);
610 txq->nfree = 0;
611 ds = txq->dma.dd_desc;
612 for (i = 0; i < malo_txbuf; i++, bf++, ds += MALO_TXDESC) {
613 bf->bf_desc = ds;
614 bf->bf_daddr = DS2PHYS(&txq->dma, ds);
615 error = bus_dmamap_create(sc->malo_dmat, BUS_DMA_NOWAIT,
616 &bf->bf_dmamap);
617 if (error != 0) {
618 if_printf(ifp, "unable to create dmamap for tx "
619 "buffer %u, error %u\n", i, error);
620 return error;
621 }
622 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list);
623 txq->nfree++;
624 }
625
626 return 0;
627 }
628
629 static void
630 malo_desc_cleanup(struct malo_softc *sc, struct malo_descdma *dd)
631 {
632 bus_dmamap_unload(dd->dd_dmat, dd->dd_dmamap);
633 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap);
634 bus_dmamap_destroy(dd->dd_dmat, dd->dd_dmamap);
635 bus_dma_tag_destroy(dd->dd_dmat);
636
637 memset(dd, 0, sizeof(*dd));
638 }
639
640 static void
641 malo_rxdma_cleanup(struct malo_softc *sc)
642 {
643 struct malo_rxbuf *bf;
644
645 STAILQ_FOREACH(bf, &sc->malo_rxbuf, bf_list) {
646 if (bf->bf_m != NULL) {
647 m_freem(bf->bf_m);
648 bf->bf_m = NULL;
649 }
650 if (bf->bf_dmamap != NULL) {
651 bus_dmamap_destroy(sc->malo_dmat, bf->bf_dmamap);
652 bf->bf_dmamap = NULL;
653 }
654 }
655 STAILQ_INIT(&sc->malo_rxbuf);
656 if (sc->malo_rxdma.dd_bufptr != NULL) {
657 free(sc->malo_rxdma.dd_bufptr, M_MALODEV);
658 sc->malo_rxdma.dd_bufptr = NULL;
659 }
660 if (sc->malo_rxdma.dd_desc_len != 0)
661 malo_desc_cleanup(sc, &sc->malo_rxdma);
662 }
663
664 static void
665 malo_txdma_cleanup(struct malo_softc *sc, struct malo_txq *txq)
666 {
667 struct malo_txbuf *bf;
668 struct ieee80211_node *ni;
669
670 STAILQ_FOREACH(bf, &txq->free, bf_list) {
671 if (bf->bf_m != NULL) {
672 m_freem(bf->bf_m);
673 bf->bf_m = NULL;
674 }
675 ni = bf->bf_node;
676 bf->bf_node = NULL;
677 if (ni != NULL) {
678 /*
679 * Reclaim node reference.
680 */
681 ieee80211_free_node(ni);
682 }
683 if (bf->bf_dmamap != NULL) {
684 bus_dmamap_destroy(sc->malo_dmat, bf->bf_dmamap);
685 bf->bf_dmamap = NULL;
686 }
687 }
688 STAILQ_INIT(&txq->free);
689 txq->nfree = 0;
690 if (txq->dma.dd_bufptr != NULL) {
691 free(txq->dma.dd_bufptr, M_MALODEV);
692 txq->dma.dd_bufptr = NULL;
693 }
694 if (txq->dma.dd_desc_len != 0)
695 malo_desc_cleanup(sc, &txq->dma);
696 }
697
698 static void
699 malo_dma_cleanup(struct malo_softc *sc)
700 {
701 int i;
702
703 for (i = 0; i < MALO_NUM_TX_QUEUES; i++)
704 malo_txdma_cleanup(sc, &sc->malo_txq[i]);
705
706 malo_rxdma_cleanup(sc);
707 }
708
709 static int
710 malo_dma_setup(struct malo_softc *sc)
711 {
712 int error, i;
713
714 /* rxdma initializing. */
715 error = malo_rxdma_setup(sc);
716 if (error != 0)
717 return error;
718
719 /* NB: we just have 1 tx queue now. */
720 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) {
721 error = malo_txdma_setup(sc, &sc->malo_txq[i]);
722 if (error != 0) {
723 malo_dma_cleanup(sc);
724
725 return error;
726 }
727
728 malo_txq_init(sc, &sc->malo_txq[i], i);
729 }
730
731 return 0;
732 }
733
734 static void
735 malo_hal_set_rxtxdma(struct malo_softc *sc)
736 {
737 int i;
738
739 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_read,
740 sc->malo_hwdma.rxdesc_read);
741 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_write,
742 sc->malo_hwdma.rxdesc_read);
743
744 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) {
745 malo_bar0_write4(sc,
746 sc->malo_hwspecs.wcbbase[i], sc->malo_hwdma.wcbbase[i]);
747 }
748 }
749
750 /*
751 * Inform firmware of our tx/rx dma setup. The BAR 0 writes below are
752 * for compatibility with older firmware. For current firmware we send
753 * this information with a cmd block via malo_hal_sethwdma.
754 */
755 static int
756 malo_setup_hwdma(struct malo_softc *sc)
757 {
758 int i;
759 struct malo_txq *txq;
760
761 sc->malo_hwdma.rxdesc_read = sc->malo_rxdma.dd_desc_paddr;
762
763 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) {
764 txq = &sc->malo_txq[i];
765 sc->malo_hwdma.wcbbase[i] = txq->dma.dd_desc_paddr;
766 }
767 sc->malo_hwdma.maxnum_txwcb = malo_txbuf;
768 sc->malo_hwdma.maxnum_wcb = MALO_NUM_TX_QUEUES;
769
770 malo_hal_set_rxtxdma(sc);
771
772 return 0;
773 }
774
775 static void
776 malo_txq_init(struct malo_softc *sc, struct malo_txq *txq, int qnum)
777 {
778 struct malo_txbuf *bf, *bn;
779 struct malo_txdesc *ds;
780
781 MALO_TXQ_LOCK_INIT(sc, txq);
782 txq->qnum = qnum;
783 txq->txpri = 0; /* XXX */
784
785 STAILQ_FOREACH(bf, &txq->free, bf_list) {
786 bf->bf_txq = txq;
787
788 ds = bf->bf_desc;
789 bn = STAILQ_NEXT(bf, bf_list);
790 if (bn == NULL)
791 bn = STAILQ_FIRST(&txq->free);
792 ds->physnext = htole32(bn->bf_daddr);
793 }
794 STAILQ_INIT(&txq->active);
795 }
796
797 /*
798 * Reclaim resources for a setup queue.
799 */
800 static void
801 malo_tx_cleanupq(struct malo_softc *sc, struct malo_txq *txq)
802 {
803 /* XXX hal work? */
804 MALO_TXQ_LOCK_DESTROY(txq);
805 }
806
807 /*
808 * Allocate a tx buffer for sending a frame.
809 */
810 static struct malo_txbuf *
811 malo_getbuf(struct malo_softc *sc, struct malo_txq *txq)
812 {
813 struct malo_txbuf *bf;
814
815 MALO_TXQ_LOCK(txq);
816 bf = STAILQ_FIRST(&txq->free);
817 if (bf != NULL) {
818 STAILQ_REMOVE_HEAD(&txq->free, bf_list);
819 txq->nfree--;
820 }
821 MALO_TXQ_UNLOCK(txq);
822 if (bf == NULL) {
823 DPRINTF(sc, MALO_DEBUG_XMIT,
824 "%s: out of xmit buffers on q %d\n", __func__, txq->qnum);
825 sc->malo_stats.mst_tx_qstop++;
826 }
827 return bf;
828 }
829
830 static int
831 malo_tx_dmasetup(struct malo_softc *sc, struct malo_txbuf *bf, struct mbuf *m0)
832 {
833 struct mbuf *m;
834 int error;
835
836 /*
837 * Load the DMA map so any coalescing is done. This also calculates
838 * the number of descriptors we need.
839 */
840 error = bus_dmamap_load_mbuf_sg(sc->malo_dmat, bf->bf_dmamap, m0,
841 bf->bf_segs, &bf->bf_nseg,
842 BUS_DMA_NOWAIT);
843 if (error == EFBIG) {
844 /* XXX packet requires too many descriptors */
845 bf->bf_nseg = MALO_TXDESC + 1;
846 } else if (error != 0) {
847 sc->malo_stats.mst_tx_busdma++;
848 m_freem(m0);
849 return error;
850 }
851 /*
852 * Discard null packets and check for packets that require too many
853 * TX descriptors. We try to convert the latter to a cluster.
854 */
855 if (error == EFBIG) { /* too many desc's, linearize */
856 sc->malo_stats.mst_tx_linear++;
857 m = m_defrag(m0, M_DONTWAIT);
858 if (m == NULL) {
859 m_freem(m0);
860 sc->malo_stats.mst_tx_nombuf++;
861 return ENOMEM;
862 }
863 m0 = m;
864 error = bus_dmamap_load_mbuf_sg(sc->malo_dmat, bf->bf_dmamap, m0,
865 bf->bf_segs, &bf->bf_nseg,
866 BUS_DMA_NOWAIT);
867 if (error != 0) {
868 sc->malo_stats.mst_tx_busdma++;
869 m_freem(m0);
870 return error;
871 }
872 KASSERT(bf->bf_nseg <= MALO_TXDESC,
873 ("too many segments after defrag; nseg %u", bf->bf_nseg));
874 } else if (bf->bf_nseg == 0) { /* null packet, discard */
875 sc->malo_stats.mst_tx_nodata++;
876 m_freem(m0);
877 return EIO;
878 }
879 DPRINTF(sc, MALO_DEBUG_XMIT, "%s: m %p len %u\n",
880 __func__, m0, m0->m_pkthdr.len);
881 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, BUS_DMASYNC_PREWRITE);
882 bf->bf_m = m0;
883
884 return 0;
885 }
886
887 #ifdef MALO_DEBUG
888 static void
889 malo_printrxbuf(const struct malo_rxbuf *bf, u_int ix)
890 {
891 const struct malo_rxdesc *ds = bf->bf_desc;
892 uint32_t status = le32toh(ds->status);
893
894 printf("R[%2u] (DS.V:%p DS.P:%p) NEXT:%08x DATA:%08x RC:%02x%s\n"
895 " STAT:%02x LEN:%04x SNR:%02x NF:%02x CHAN:%02x"
896 " RATE:%02x QOS:%04x\n",
897 ix, ds, (const struct malo_desc *)bf->bf_daddr,
898 le32toh(ds->physnext), le32toh(ds->physbuffdata),
899 ds->rxcontrol,
900 ds->rxcontrol != MALO_RXD_CTRL_DRIVER_OWN ?
901 "" : (status & MALO_RXD_STATUS_OK) ? " *" : " !",
902 ds->status, le16toh(ds->pktlen), ds->snr, ds->nf, ds->channel,
903 ds->rate, le16toh(ds->qosctrl));
904 }
905
906 static void
907 malo_printtxbuf(const struct malo_txbuf *bf, u_int qnum, u_int ix)
908 {
909 const struct malo_txdesc *ds = bf->bf_desc;
910 uint32_t status = le32toh(ds->status);
911
912 printf("Q%u[%3u]", qnum, ix);
913 printf(" (DS.V:%p DS.P:%p)\n",
914 ds, (const struct malo_txdesc *)bf->bf_daddr);
915 printf(" NEXT:%08x DATA:%08x LEN:%04x STAT:%08x%s\n",
916 le32toh(ds->physnext),
917 le32toh(ds->pktptr), le16toh(ds->pktlen), status,
918 status & MALO_TXD_STATUS_USED ?
919 "" : (status & 3) != 0 ? " *" : " !");
920 printf(" RATE:%02x PRI:%x QOS:%04x SAP:%08x FORMAT:%04x\n",
921 ds->datarate, ds->txpriority, le16toh(ds->qosctrl),
922 le32toh(ds->sap_pktinfo), le16toh(ds->format));
923 #if 0
924 {
925 const uint8_t *cp = (const uint8_t *) ds;
926 int i;
927 for (i = 0; i < sizeof(struct malo_txdesc); i++) {
928 printf("%02x ", cp[i]);
929 if (((i+1) % 16) == 0)
930 printf("\n");
931 }
932 printf("\n");
933 }
934 #endif
935 }
936 #endif /* MALO_DEBUG */
937
938 static __inline void
939 malo_updatetxrate(struct ieee80211_node *ni, int rix)
940 {
941 #define N(x) (sizeof(x)/sizeof(x[0]))
942 static const int ieeerates[] =
943 { 2, 4, 11, 22, 44, 12, 18, 24, 36, 48, 96, 108 };
944 if (rix < N(ieeerates))
945 ni->ni_txrate = ieeerates[rix];
946 #undef N
947 }
948
949 static int
950 malo_fix2rate(int fix_rate)
951 {
952 #define N(x) (sizeof(x)/sizeof(x[0]))
953 static const int rates[] =
954 { 2, 4, 11, 22, 12, 18, 24, 36, 48, 96, 108 };
955 return (fix_rate < N(rates) ? rates[fix_rate] : 0);
956 #undef N
957 }
958
959 /* idiomatic shorthands: MS = mask+shift, SM = shift+mask */
960 #define MS(v,x) (((v) & x) >> x##_S)
961 #define SM(v,x) (((v) << x##_S) & x)
962
963 /*
964 * Process completed xmit descriptors from the specified queue.
965 */
966 static int
967 malo_tx_processq(struct malo_softc *sc, struct malo_txq *txq)
968 {
969 struct malo_txbuf *bf;
970 struct malo_txdesc *ds;
971 struct ieee80211_node *ni;
972 int nreaped;
973 uint32_t status;
974
975 DPRINTF(sc, MALO_DEBUG_TX_PROC, "%s: tx queue %u\n",
976 __func__, txq->qnum);
977 for (nreaped = 0;; nreaped++) {
978 MALO_TXQ_LOCK(txq);
979 bf = STAILQ_FIRST(&txq->active);
980 if (bf == NULL) {
981 MALO_TXQ_UNLOCK(txq);
982 break;
983 }
984 ds = bf->bf_desc;
985 MALO_TXDESC_SYNC(txq, ds,
986 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
987 if (ds->status & htole32(MALO_TXD_STATUS_FW_OWNED)) {
988 MALO_TXQ_UNLOCK(txq);
989 break;
990 }
991 STAILQ_REMOVE_HEAD(&txq->active, bf_list);
992 MALO_TXQ_UNLOCK(txq);
993
994 #ifdef MALO_DEBUG
995 if (sc->malo_debug & MALO_DEBUG_XMIT_DESC)
996 malo_printtxbuf(bf, txq->qnum, nreaped);
997 #endif
998 ni = bf->bf_node;
999 if (ni != NULL) {
1000 status = le32toh(ds->status);
1001 if (status & MALO_TXD_STATUS_OK) {
1002 uint16_t format = le16toh(ds->format);
1003 uint8_t txant = MS(format, MALO_TXD_ANTENNA);
1004
1005 sc->malo_stats.mst_ant_tx[txant]++;
1006 if (status & MALO_TXD_STATUS_OK_RETRY)
1007 sc->malo_stats.mst_tx_retries++;
1008 if (status & MALO_TXD_STATUS_OK_MORE_RETRY)
1009 sc->malo_stats.mst_tx_mretries++;
1010 malo_updatetxrate(ni, ds->datarate);
1011 sc->malo_stats.mst_tx_rate = ds->datarate;
1012 } else {
1013 if (status & MALO_TXD_STATUS_FAILED_LINK_ERROR)
1014 sc->malo_stats.mst_tx_linkerror++;
1015 if (status & MALO_TXD_STATUS_FAILED_XRETRY)
1016 sc->malo_stats.mst_tx_xretries++;
1017 if (status & MALO_TXD_STATUS_FAILED_AGING)
1018 sc->malo_stats.mst_tx_aging++;
1019 }
1020 /*
1021 * Do any tx complete callback. Note this must
1022 * be done before releasing the node reference.
1023 * XXX no way to figure out if frame was ACK'd
1024 */
1025 if (bf->bf_m->m_flags & M_TXCB) {
1026 /* XXX strip fw len in case header inspected */
1027 m_adj(bf->bf_m, sizeof(uint16_t));
1028 ieee80211_process_callback(ni, bf->bf_m,
1029 (status & MALO_TXD_STATUS_OK) == 0);
1030 }
1031 /*
1032 * Reclaim reference to node.
1033 *
1034 * NB: the node may be reclaimed here if, for example
1035 * this is a DEAUTH message that was sent and the
1036 * node was timed out due to inactivity.
1037 */
1038 ieee80211_free_node(ni);
1039 }
1040 ds->status = htole32(MALO_TXD_STATUS_IDLE);
1041 ds->pktlen = htole32(0);
1042
1043 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap,
1044 BUS_DMASYNC_POSTWRITE);
1045 bus_dmamap_unload(sc->malo_dmat, bf->bf_dmamap);
1046 m_freem(bf->bf_m);
1047 bf->bf_m = NULL;
1048 bf->bf_node = NULL;
1049
1050 MALO_TXQ_LOCK(txq);
1051 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list);
1052 txq->nfree++;
1053 MALO_TXQ_UNLOCK(txq);
1054 }
1055 return nreaped;
1056 }
1057
1058 /*
1059 * Deferred processing of transmit interrupt.
1060 */
1061 static void
1062 malo_tx_proc(void *arg, int npending)
1063 {
1064 struct malo_softc *sc = arg;
1065 struct ifnet *ifp = sc->malo_ifp;
1066 int i, nreaped;
1067
1068 /*
1069 * Process each active queue.
1070 */
1071 nreaped = 0;
1072 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) {
1073 if (!STAILQ_EMPTY(&sc->malo_txq[i].active))
1074 nreaped += malo_tx_processq(sc, &sc->malo_txq[i]);
1075 }
1076
1077 if (nreaped != 0) {
1078 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1079 ifp->if_timer = 0;
1080 malo_start(ifp);
1081 }
1082 }
1083
1084 static int
1085 malo_tx_start(struct malo_softc *sc, struct ieee80211_node *ni,
1086 struct malo_txbuf *bf, struct mbuf *m0)
1087 {
1088 #define IEEE80211_DIR_DSTODS(wh) \
1089 ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS)
1090 #define IS_DATA_FRAME(wh) \
1091 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK)) == IEEE80211_FC0_TYPE_DATA)
1092 int error, ismcast, iswep;
1093 int copyhdrlen, hdrlen, pktlen;
1094 struct ieee80211_frame *wh;
1095 struct ifnet *ifp = sc->malo_ifp;
1096 struct ieee80211com *ic = ifp->if_l2com;
1097 struct ieee80211vap *vap = ni->ni_vap;
1098 struct malo_txdesc *ds;
1099 struct malo_txrec *tr;
1100 struct malo_txq *txq;
1101 uint16_t qos;
1102
1103 wh = mtod(m0, struct ieee80211_frame *);
1104 iswep = wh->i_fc[1] & IEEE80211_FC1_WEP;
1105 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
1106 copyhdrlen = hdrlen = ieee80211_anyhdrsize(wh);
1107 pktlen = m0->m_pkthdr.len;
1108 if (IEEE80211_QOS_HAS_SEQ(wh)) {
1109 if (IEEE80211_DIR_DSTODS(wh)) {
1110 qos = *(uint16_t *)
1111 (((struct ieee80211_qosframe_addr4 *) wh)->i_qos);
1112 copyhdrlen -= sizeof(qos);
1113 } else
1114 qos = *(uint16_t *)
1115 (((struct ieee80211_qosframe *) wh)->i_qos);
1116 } else
1117 qos = 0;
1118
1119 if (iswep) {
1120 struct ieee80211_key *k;
1121
1122 /*
1123 * Construct the 802.11 header+trailer for an encrypted
1124 * frame. The only reason this can fail is because of an
1125 * unknown or unsupported cipher/key type.
1126 *
1127 * NB: we do this even though the firmware will ignore
1128 * what we've done for WEP and TKIP as we need the
1129 * ExtIV filled in for CCMP and this also adjusts
1130 * the headers which simplifies our work below.
1131 */
1132 k = ieee80211_crypto_encap(ni, m0);
1133 if (k == NULL) {
1134 /*
1135 * This can happen when the key is yanked after the
1136 * frame was queued. Just discard the frame; the
1137 * 802.11 layer counts failures and provides
1138 * debugging/diagnostics.
1139 */
1140 m_freem(m0);
1141 return EIO;
1142 }
1143
1144 /*
1145 * Adjust the packet length for the crypto additions
1146 * done during encap and any other bits that the f/w
1147 * will add later on.
1148 */
1149 pktlen = m0->m_pkthdr.len;
1150
1151 /* packet header may have moved, reset our local pointer */
1152 wh = mtod(m0, struct ieee80211_frame *);
1153 }
1154
1155 if (ieee80211_radiotap_active_vap(vap)) {
1156 sc->malo_tx_th.wt_flags = 0; /* XXX */
1157 if (iswep)
1158 sc->malo_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
1159 sc->malo_tx_th.wt_txpower = ni->ni_txpower;
1160 sc->malo_tx_th.wt_antenna = sc->malo_txantenna;
1161
1162 ieee80211_radiotap_tx(vap, m0);
1163 }
1164
1165 /*
1166 * Copy up/down the 802.11 header; the firmware requires
1167 * we present a 2-byte payload length followed by a
1168 * 4-address header (w/o QoS), followed (optionally) by
1169 * any WEP/ExtIV header (but only filled in for CCMP).
1170 * We are assured the mbuf has sufficient headroom to
1171 * prepend in-place by the setup of ic_headroom in
1172 * malo_attach.
1173 */
1174 if (hdrlen < sizeof(struct malo_txrec)) {
1175 const int space = sizeof(struct malo_txrec) - hdrlen;
1176 if (M_LEADINGSPACE(m0) < space) {
1177 /* NB: should never happen */
1178 device_printf(sc->malo_dev,
1179 "not enough headroom, need %d found %zd, "
1180 "m_flags 0x%x m_len %d\n",
1181 space, M_LEADINGSPACE(m0), m0->m_flags, m0->m_len);
1182 ieee80211_dump_pkt(ic,
1183 mtod(m0, const uint8_t *), m0->m_len, 0, -1);
1184 m_freem(m0);
1185 /* XXX stat */
1186 return EIO;
1187 }
1188 M_PREPEND(m0, space, M_NOWAIT);
1189 }
1190 tr = mtod(m0, struct malo_txrec *);
1191 if (wh != (struct ieee80211_frame *) &tr->wh)
1192 ovbcopy(wh, &tr->wh, hdrlen);
1193 /*
1194 * Note: the "firmware length" is actually the length of the fully
1195 * formed "802.11 payload". That is, it's everything except for
1196 * the 802.11 header. In particular this includes all crypto
1197 * material including the MIC!
1198 */
1199 tr->fwlen = htole16(pktlen - hdrlen);
1200
1201 /*
1202 * Load the DMA map so any coalescing is done. This
1203 * also calculates the number of descriptors we need.
1204 */
1205 error = malo_tx_dmasetup(sc, bf, m0);
1206 if (error != 0)
1207 return error;
1208 bf->bf_node = ni; /* NB: held reference */
1209 m0 = bf->bf_m; /* NB: may have changed */
1210 tr = mtod(m0, struct malo_txrec *);
1211 wh = (struct ieee80211_frame *)&tr->wh;
1212
1213 /*
1214 * Formulate tx descriptor.
1215 */
1216 ds = bf->bf_desc;
1217 txq = bf->bf_txq;
1218
1219 ds->qosctrl = qos; /* NB: already little-endian */
1220 ds->pktptr = htole32(bf->bf_segs[0].ds_addr);
1221 ds->pktlen = htole16(bf->bf_segs[0].ds_len);
1222 /* NB: pPhysNext setup once, don't touch */
1223 ds->datarate = IS_DATA_FRAME(wh) ? 1 : 0;
1224 ds->sap_pktinfo = 0;
1225 ds->format = 0;
1226
1227 /*
1228 * Select transmit rate.
1229 */
1230 switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) {
1231 case IEEE80211_FC0_TYPE_MGT:
1232 sc->malo_stats.mst_tx_mgmt++;
1233 /* fall thru... */
1234 case IEEE80211_FC0_TYPE_CTL:
1235 ds->txpriority = 1;
1236 break;
1237 case IEEE80211_FC0_TYPE_DATA:
1238 ds->txpriority = txq->qnum;
1239 break;
1240 default:
1241 if_printf(ifp, "bogus frame type 0x%x (%s)\n",
1242 wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK, __func__);
1243 /* XXX statistic */
1244 m_freem(m0);
1245 return EIO;
1246 }
1247
1248 #ifdef MALO_DEBUG
1249 if (IFF_DUMPPKTS_XMIT(sc))
1250 ieee80211_dump_pkt(ic,
1251 mtod(m0, const uint8_t *)+sizeof(uint16_t),
1252 m0->m_len - sizeof(uint16_t), ds->datarate, -1);
1253 #endif
1254
1255 MALO_TXQ_LOCK(txq);
1256 if (!IS_DATA_FRAME(wh))
1257 ds->status |= htole32(1);
1258 ds->status |= htole32(MALO_TXD_STATUS_FW_OWNED);
1259 STAILQ_INSERT_TAIL(&txq->active, bf, bf_list);
1260 MALO_TXDESC_SYNC(txq, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1261
1262 ifp->if_opackets++;
1263 ifp->if_timer = 5;
1264 MALO_TXQ_UNLOCK(txq);
1265 return 0;
1266 #undef IEEE80211_DIR_DSTODS
1267 }
1268
1269 static void
1270 malo_start(struct ifnet *ifp)
1271 {
1272 struct malo_softc *sc = ifp->if_softc;
1273 struct ieee80211_node *ni;
1274 struct malo_txq *txq = &sc->malo_txq[0];
1275 struct malo_txbuf *bf = NULL;
1276 struct mbuf *m;
1277 int nqueued = 0;
1278
1279 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || sc->malo_invalid)
1280 return;
1281
1282 for (;;) {
1283 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1284 if (m == NULL)
1285 break;
1286 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1287 bf = malo_getbuf(sc, txq);
1288 if (bf == NULL) {
1289 IFQ_DRV_PREPEND(&ifp->if_snd, m);
1290
1291 /* XXX blocks other traffic */
1292 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1293 sc->malo_stats.mst_tx_qstop++;
1294 break;
1295 }
1296 /*
1297 * Pass the frame to the h/w for transmission.
1298 */
1299 if (malo_tx_start(sc, ni, bf, m)) {
1300 ifp->if_oerrors++;
1301 if (bf != NULL) {
1302 bf->bf_m = NULL;
1303 bf->bf_node = NULL;
1304 MALO_TXQ_LOCK(txq);
1305 STAILQ_INSERT_HEAD(&txq->free, bf, bf_list);
1306 MALO_TXQ_UNLOCK(txq);
1307 }
1308 ieee80211_free_node(ni);
1309 continue;
1310 }
1311 nqueued++;
1312
1313 if (nqueued >= malo_txcoalesce) {
1314 /*
1315 * Poke the firmware to process queued frames;
1316 * see below about (lack of) locking.
1317 */
1318 nqueued = 0;
1319 malo_hal_txstart(sc->malo_mh, 0/*XXX*/);
1320 }
1321 }
1322
1323 if (nqueued) {
1324 /*
1325 * NB: We don't need to lock against tx done because
1326 * this just prods the firmware to check the transmit
1327 * descriptors. The firmware will also start fetching
1328 * descriptors by itself if it notices new ones are
1329 * present when it goes to deliver a tx done interrupt
1330 * to the host. So if we race with tx done processing
1331 * it's ok. Delivering the kick here rather than in
1332 * malo_tx_start is an optimization to avoid poking the
1333 * firmware for each packet.
1334 *
1335 * NB: the queue id isn't used so 0 is ok.
1336 */
1337 malo_hal_txstart(sc->malo_mh, 0/*XXX*/);
1338 }
1339 }
1340
1341 static void
1342 malo_watchdog(struct ifnet *ifp)
1343 {
1344 struct malo_softc *sc = ifp->if_softc;
1345
1346 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) && !sc->malo_invalid) {
1347 if_printf(ifp, "watchdog timeout\n");
1348
1349 /* XXX no way to reset h/w. now */
1350
1351 ifp->if_oerrors++;
1352 sc->malo_stats.mst_watchdog++;
1353 }
1354 }
1355
1356 static int
1357 malo_hal_reset(struct malo_softc *sc)
1358 {
1359 static int first = 0;
1360 struct ifnet *ifp = sc->malo_ifp;
1361 struct ieee80211com *ic = ifp->if_l2com;
1362 struct malo_hal *mh = sc->malo_mh;
1363
1364 if (first == 0) {
1365 /*
1366 * NB: when the device firstly is initialized, sometimes
1367 * firmware could override rx/tx dma registers so we re-set
1368 * these values once.
1369 */
1370 malo_hal_set_rxtxdma(sc);
1371 first = 1;
1372 }
1373
1374 malo_hal_setantenna(mh, MHA_ANTENNATYPE_RX, sc->malo_rxantenna);
1375 malo_hal_setantenna(mh, MHA_ANTENNATYPE_TX, sc->malo_txantenna);
1376 malo_hal_setradio(mh, 1, MHP_AUTO_PREAMBLE);
1377 malo_chan_set(sc, ic->ic_curchan);
1378
1379 /* XXX needs other stuffs? */
1380
1381 return 1;
1382 }
1383
1384 static __inline struct mbuf *
1385 malo_getrxmbuf(struct malo_softc *sc, struct malo_rxbuf *bf)
1386 {
1387 struct mbuf *m;
1388 bus_addr_t paddr;
1389 int error;
1390
1391 /* XXX don't need mbuf, just dma buffer */
1392 m = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
1393 if (m == NULL) {
1394 sc->malo_stats.mst_rx_nombuf++; /* XXX */
1395 return NULL;
1396 }
1397 error = bus_dmamap_load(sc->malo_dmat, bf->bf_dmamap,
1398 mtod(m, caddr_t), MJUMPAGESIZE,
1399 malo_load_cb, &paddr, BUS_DMA_NOWAIT);
1400 if (error != 0) {
1401 if_printf(sc->malo_ifp,
1402 "%s: bus_dmamap_load failed, error %d\n", __func__, error);
1403 m_freem(m);
1404 return NULL;
1405 }
1406 bf->bf_data = paddr;
1407 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, BUS_DMASYNC_PREWRITE);
1408
1409 return m;
1410 }
1411
1412 static int
1413 malo_rxbuf_init(struct malo_softc *sc, struct malo_rxbuf *bf)
1414 {
1415 struct malo_rxdesc *ds;
1416
1417 ds = bf->bf_desc;
1418 if (bf->bf_m == NULL) {
1419 bf->bf_m = malo_getrxmbuf(sc, bf);
1420 if (bf->bf_m == NULL) {
1421 /* mark descriptor to be skipped */
1422 ds->rxcontrol = MALO_RXD_CTRL_OS_OWN;
1423 /* NB: don't need PREREAD */
1424 MALO_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREWRITE);
1425 return ENOMEM;
1426 }
1427 }
1428
1429 /*
1430 * Setup descriptor.
1431 */
1432 ds->qosctrl = 0;
1433 ds->snr = 0;
1434 ds->status = MALO_RXD_STATUS_IDLE;
1435 ds->channel = 0;
1436 ds->pktlen = htole16(MALO_RXSIZE);
1437 ds->nf = 0;
1438 ds->physbuffdata = htole32(bf->bf_data);
1439 /* NB: don't touch pPhysNext, set once */
1440 ds->rxcontrol = MALO_RXD_CTRL_DRIVER_OWN;
1441 MALO_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1442
1443 return 0;
1444 }
1445
1446 /*
1447 * Setup the rx data structures. This should only be done once or we may get
1448 * out of sync with the firmware.
1449 */
1450 static int
1451 malo_startrecv(struct malo_softc *sc)
1452 {
1453 struct malo_rxbuf *bf, *prev;
1454 struct malo_rxdesc *ds;
1455
1456 if (sc->malo_recvsetup == 1) {
1457 malo_mode_init(sc); /* set filters, etc. */
1458 return 0;
1459 }
1460
1461 prev = NULL;
1462 STAILQ_FOREACH(bf, &sc->malo_rxbuf, bf_list) {
1463 int error = malo_rxbuf_init(sc, bf);
1464 if (error != 0) {
1465 DPRINTF(sc, MALO_DEBUG_RECV,
1466 "%s: malo_rxbuf_init failed %d\n",
1467 __func__, error);
1468 return error;
1469 }
1470 if (prev != NULL) {
1471 ds = prev->bf_desc;
1472 ds->physnext = htole32(bf->bf_daddr);
1473 }
1474 prev = bf;
1475 }
1476 if (prev != NULL) {
1477 ds = prev->bf_desc;
1478 ds->physnext =
1479 htole32(STAILQ_FIRST(&sc->malo_rxbuf)->bf_daddr);
1480 }
1481
1482 sc->malo_recvsetup = 1;
1483
1484 malo_mode_init(sc); /* set filters, etc. */
1485
1486 return 0;
1487 }
1488
1489 static void
1490 malo_init_locked(struct malo_softc *sc)
1491 {
1492 struct ifnet *ifp = sc->malo_ifp;
1493 struct malo_hal *mh = sc->malo_mh;
1494 int error;
1495
1496 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags 0x%x\n",
1497 __func__, ifp->if_flags);
1498
1499 MALO_LOCK_ASSERT(sc);
1500
1501 /*
1502 * Stop anything previously setup. This is safe whether this is
1503 * the first time through or not.
1504 */
1505 malo_stop_locked(ifp, 0);
1506
1507 /*
1508 * Push state to the firmware.
1509 */
1510 if (!malo_hal_reset(sc)) {
1511 if_printf(ifp, "%s: unable to reset hardware\n", __func__);
1512 return;
1513 }
1514
1515 /*
1516 * Setup recv (once); transmit is already good to go.
1517 */
1518 error = malo_startrecv(sc);
1519 if (error != 0) {
1520 if_printf(ifp, "%s: unable to start recv logic, error %d\n",
1521 __func__, error);
1522 return;
1523 }
1524
1525 /*
1526 * Enable interrupts.
1527 */
1528 sc->malo_imask = MALO_A2HRIC_BIT_RX_RDY
1529 | MALO_A2HRIC_BIT_TX_DONE
1530 | MALO_A2HRIC_BIT_OPC_DONE
1531 | MALO_A2HRIC_BIT_MAC_EVENT
1532 | MALO_A2HRIC_BIT_RX_PROBLEM
1533 | MALO_A2HRIC_BIT_ICV_ERROR
1534 | MALO_A2HRIC_BIT_RADAR_DETECT
1535 | MALO_A2HRIC_BIT_CHAN_SWITCH;
1536
1537 ifp->if_drv_flags |= IFF_DRV_RUNNING;
1538 malo_hal_intrset(mh, sc->malo_imask);
1539 }
1540
1541 static void
1542 malo_init(void *arg)
1543 {
1544 struct malo_softc *sc = (struct malo_softc *) arg;
1545 struct ifnet *ifp = sc->malo_ifp;
1546 struct ieee80211com *ic = ifp->if_l2com;
1547
1548 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags 0x%x\n",
1549 __func__, ifp->if_flags);
1550
1551 MALO_LOCK(sc);
1552 malo_init_locked(sc);
1553
1554 MALO_UNLOCK(sc);
1555
1556 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1557 ieee80211_start_all(ic); /* start all vap's */
1558 }
1559
1560 /*
1561 * Set the multicast filter contents into the hardware.
1562 */
1563 static void
1564 malo_setmcastfilter(struct malo_softc *sc)
1565 {
1566 struct ifnet *ifp = sc->malo_ifp;
1567 struct ieee80211com *ic = ifp->if_l2com;
1568 struct ifmultiaddr *ifma;
1569 uint8_t macs[IEEE80211_ADDR_LEN * MALO_HAL_MCAST_MAX];
1570 uint8_t *mp;
1571 int nmc;
1572
1573 mp = macs;
1574 nmc = 0;
1575
1576 if (ic->ic_opmode == IEEE80211_M_MONITOR ||
1577 (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)))
1578 goto all;
1579
1580 if_maddr_rlock(ifp);
1581 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1582 if (ifma->ifma_addr->sa_family != AF_LINK)
1583 continue;
1584
1585 if (nmc == MALO_HAL_MCAST_MAX) {
1586 ifp->if_flags |= IFF_ALLMULTI;
1587 if_maddr_runlock(ifp);
1588 goto all;
1589 }
1590 IEEE80211_ADDR_COPY(mp,
1591 LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
1592
1593 mp += IEEE80211_ADDR_LEN, nmc++;
1594 }
1595 if_maddr_runlock(ifp);
1596
1597 malo_hal_setmcast(sc->malo_mh, nmc, macs);
1598
1599 all:
1600 /*
1601 * XXX we don't know how to set the f/w for supporting
1602 * IFF_ALLMULTI | IFF_PROMISC cases
1603 */
1604 return;
1605 }
1606
1607 static int
1608 malo_mode_init(struct malo_softc *sc)
1609 {
1610 struct ifnet *ifp = sc->malo_ifp;
1611 struct ieee80211com *ic = ifp->if_l2com;
1612 struct malo_hal *mh = sc->malo_mh;
1613
1614 /*
1615 * NB: Ignore promisc in hostap mode; it's set by the
1616 * bridge. This is wrong but we have no way to
1617 * identify internal requests (from the bridge)
1618 * versus external requests such as for tcpdump.
1619 */
1620 malo_hal_setpromisc(mh, (ifp->if_flags & IFF_PROMISC) &&
1621 ic->ic_opmode != IEEE80211_M_HOSTAP);
1622 malo_setmcastfilter(sc);
1623
1624 return ENXIO;
1625 }
1626
1627 static void
1628 malo_tx_draintxq(struct malo_softc *sc, struct malo_txq *txq)
1629 {
1630 struct ieee80211_node *ni;
1631 struct malo_txbuf *bf;
1632 u_int ix;
1633
1634 /*
1635 * NB: this assumes output has been stopped and
1636 * we do not need to block malo_tx_tasklet
1637 */
1638 for (ix = 0;; ix++) {
1639 MALO_TXQ_LOCK(txq);
1640 bf = STAILQ_FIRST(&txq->active);
1641 if (bf == NULL) {
1642 MALO_TXQ_UNLOCK(txq);
1643 break;
1644 }
1645 STAILQ_REMOVE_HEAD(&txq->active, bf_list);
1646 MALO_TXQ_UNLOCK(txq);
1647 #ifdef MALO_DEBUG
1648 if (sc->malo_debug & MALO_DEBUG_RESET) {
1649 struct ifnet *ifp = sc->malo_ifp;
1650 struct ieee80211com *ic = ifp->if_l2com;
1651 const struct malo_txrec *tr =
1652 mtod(bf->bf_m, const struct malo_txrec *);
1653 malo_printtxbuf(bf, txq->qnum, ix);
1654 ieee80211_dump_pkt(ic, (const uint8_t *)&tr->wh,
1655 bf->bf_m->m_len - sizeof(tr->fwlen), 0, -1);
1656 }
1657 #endif /* MALO_DEBUG */
1658 bus_dmamap_unload(sc->malo_dmat, bf->bf_dmamap);
1659 ni = bf->bf_node;
1660 bf->bf_node = NULL;
1661 if (ni != NULL) {
1662 /*
1663 * Reclaim node reference.
1664 */
1665 ieee80211_free_node(ni);
1666 }
1667 m_freem(bf->bf_m);
1668 bf->bf_m = NULL;
1669
1670 MALO_TXQ_LOCK(txq);
1671 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list);
1672 txq->nfree++;
1673 MALO_TXQ_UNLOCK(txq);
1674 }
1675 }
1676
1677 static void
1678 malo_stop_locked(struct ifnet *ifp, int disable)
1679 {
1680 struct malo_softc *sc = ifp->if_softc;
1681 struct malo_hal *mh = sc->malo_mh;
1682 int i;
1683
1684 DPRINTF(sc, MALO_DEBUG_ANY, "%s: invalid %u if_flags 0x%x\n",
1685 __func__, sc->malo_invalid, ifp->if_flags);
1686
1687 MALO_LOCK_ASSERT(sc);
1688
1689 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
1690 return;
1691
1692 /*
1693 * Shutdown the hardware and driver:
1694 * disable interrupts
1695 * turn off the radio
1696 * drain and release tx queues
1697 *
1698 * Note that some of this work is not possible if the hardware
1699 * is gone (invalid).
1700 */
1701 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1702 ifp->if_timer = 0;
1703 /* diable interrupt. */
1704 malo_hal_intrset(mh, 0);
1705 /* turn off the radio. */
1706 malo_hal_setradio(mh, 0, MHP_AUTO_PREAMBLE);
1707
1708 /* drain and release tx queues. */
1709 for (i = 0; i < MALO_NUM_TX_QUEUES; i++)
1710 malo_tx_draintxq(sc, &sc->malo_txq[i]);
1711 }
1712
1713 static int
1714 malo_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1715 {
1716 #define MALO_IS_RUNNING(ifp) \
1717 ((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING))
1718 struct malo_softc *sc = ifp->if_softc;
1719 struct ieee80211com *ic = ifp->if_l2com;
1720 struct ifreq *ifr = (struct ifreq *) data;
1721 int error = 0, startall = 0;
1722
1723 MALO_LOCK(sc);
1724 switch (cmd) {
1725 case SIOCSIFFLAGS:
1726 if (MALO_IS_RUNNING(ifp)) {
1727 /*
1728 * To avoid rescanning another access point,
1729 * do not call malo_init() here. Instead,
1730 * only reflect promisc mode settings.
1731 */
1732 malo_mode_init(sc);
1733 } else if (ifp->if_flags & IFF_UP) {
1734 /*
1735 * Beware of being called during attach/detach
1736 * to reset promiscuous mode. In that case we
1737 * will still be marked UP but not RUNNING.
1738 * However trying to re-init the interface
1739 * is the wrong thing to do as we've already
1740 * torn down much of our state. There's
1741 * probably a better way to deal with this.
1742 */
1743 if (!sc->malo_invalid) {
1744 malo_init_locked(sc);
1745 startall = 1;
1746 }
1747 } else
1748 malo_stop_locked(ifp, 1);
1749 break;
1750 case SIOCGIFMEDIA:
1751 case SIOCSIFMEDIA:
1752 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1753 break;
1754 default:
1755 error = ether_ioctl(ifp, cmd, data);
1756 break;
1757 }
1758 MALO_UNLOCK(sc);
1759
1760 if (startall)
1761 ieee80211_start_all(ic);
1762 return error;
1763 #undef MALO_IS_RUNNING
1764 }
1765
1766 /*
1767 * Callback from the 802.11 layer to update the slot time
1768 * based on the current setting. We use it to notify the
1769 * firmware of ERP changes and the f/w takes care of things
1770 * like slot time and preamble.
1771 */
1772 static void
1773 malo_updateslot(struct ifnet *ifp)
1774 {
1775 struct malo_softc *sc = ifp->if_softc;
1776 struct ieee80211com *ic = ifp->if_l2com;
1777 struct malo_hal *mh = sc->malo_mh;
1778 int error;
1779
1780 /* NB: can be called early; suppress needless cmds */
1781 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1782 return;
1783
1784 DPRINTF(sc, MALO_DEBUG_RESET,
1785 "%s: chan %u MHz/flags 0x%x %s slot, (ic_flags 0x%x)\n",
1786 __func__, ic->ic_curchan->ic_freq, ic->ic_curchan->ic_flags,
1787 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long", ic->ic_flags);
1788
1789 if (ic->ic_flags & IEEE80211_F_SHSLOT)
1790 error = malo_hal_set_slot(mh, 1);
1791 else
1792 error = malo_hal_set_slot(mh, 0);
1793
1794 if (error != 0)
1795 device_printf(sc->malo_dev, "setting %s slot failed\n",
1796 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long");
1797 }
1798
1799 static int
1800 malo_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1801 {
1802 struct ieee80211com *ic = vap->iv_ic;
1803 struct malo_softc *sc = ic->ic_ifp->if_softc;
1804 struct malo_hal *mh = sc->malo_mh;
1805 int error;
1806
1807 DPRINTF(sc, MALO_DEBUG_STATE, "%s: %s -> %s\n", __func__,
1808 ieee80211_state_name[vap->iv_state],
1809 ieee80211_state_name[nstate]);
1810
1811 /*
1812 * Invoke the net80211 layer first so iv_bss is setup.
1813 */
1814 error = MALO_VAP(vap)->malo_newstate(vap, nstate, arg);
1815 if (error != 0)
1816 return error;
1817
1818 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) {
1819 struct ieee80211_node *ni = vap->iv_bss;
1820 enum ieee80211_phymode mode = ieee80211_chan2mode(ni->ni_chan);
1821 const struct ieee80211_txparam *tp = &vap->iv_txparms[mode];
1822
1823 DPRINTF(sc, MALO_DEBUG_STATE,
1824 "%s: %s(RUN): iv_flags 0x%08x bintvl %d bssid %s "
1825 "capinfo 0x%04x chan %d associd 0x%x mode %d rate %d\n",
1826 vap->iv_ifp->if_xname, __func__, vap->iv_flags,
1827 ni->ni_intval, ether_sprintf(ni->ni_bssid), ni->ni_capinfo,
1828 ieee80211_chan2ieee(ic, ic->ic_curchan),
1829 ni->ni_associd, mode, tp->ucastrate);
1830
1831 malo_hal_setradio(mh, 1,
1832 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ?
1833 MHP_SHORT_PREAMBLE : MHP_LONG_PREAMBLE);
1834 malo_hal_setassocid(sc->malo_mh, ni->ni_bssid, ni->ni_associd);
1835 malo_hal_set_rate(mh, mode,
1836 tp->ucastrate == IEEE80211_FIXED_RATE_NONE ?
1837 0 : malo_fix2rate(tp->ucastrate));
1838 }
1839 return 0;
1840 }
1841
1842 static int
1843 malo_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1844 const struct ieee80211_bpf_params *params)
1845 {
1846 struct ieee80211com *ic = ni->ni_ic;
1847 struct ifnet *ifp = ic->ic_ifp;
1848 struct malo_softc *sc = ifp->if_softc;
1849 struct malo_txbuf *bf;
1850 struct malo_txq *txq;
1851
1852 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || sc->malo_invalid) {
1853 ieee80211_free_node(ni);
1854 m_freem(m);
1855 return ENETDOWN;
1856 }
1857
1858 /*
1859 * Grab a TX buffer and associated resources. Note that we depend
1860 * on the classification by the 802.11 layer to get to the right h/w
1861 * queue. Management frames must ALWAYS go on queue 1 but we
1862 * cannot just force that here because we may receive non-mgt frames.
1863 */
1864 txq = &sc->malo_txq[0];
1865 bf = malo_getbuf(sc, txq);
1866 if (bf == NULL) {
1867 /* XXX blocks other traffic */
1868 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1869 ieee80211_free_node(ni);
1870 m_freem(m);
1871 return ENOBUFS;
1872 }
1873
1874 /*
1875 * Pass the frame to the h/w for transmission.
1876 */
1877 if (malo_tx_start(sc, ni, bf, m) != 0) {
1878 ifp->if_oerrors++;
1879 bf->bf_m = NULL;
1880 bf->bf_node = NULL;
1881 MALO_TXQ_LOCK(txq);
1882 STAILQ_INSERT_HEAD(&txq->free, bf, bf_list);
1883 txq->nfree++;
1884 MALO_TXQ_UNLOCK(txq);
1885
1886 ieee80211_free_node(ni);
1887 return EIO; /* XXX */
1888 }
1889
1890 /*
1891 * NB: We don't need to lock against tx done because this just
1892 * prods the firmware to check the transmit descriptors. The firmware
1893 * will also start fetching descriptors by itself if it notices
1894 * new ones are present when it goes to deliver a tx done interrupt
1895 * to the host. So if we race with tx done processing it's ok.
1896 * Delivering the kick here rather than in malo_tx_start is
1897 * an optimization to avoid poking the firmware for each packet.
1898 *
1899 * NB: the queue id isn't used so 0 is ok.
1900 */
1901 malo_hal_txstart(sc->malo_mh, 0/*XXX*/);
1902
1903 return 0;
1904 }
1905
1906 static void
1907 malo_sysctlattach(struct malo_softc *sc)
1908 {
1909 #ifdef MALO_DEBUG
1910 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->malo_dev);
1911 struct sysctl_oid *tree = device_get_sysctl_tree(sc->malo_dev);
1912
1913 sc->malo_debug = malo_debug;
1914 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
1915 "debug", CTLFLAG_RW, &sc->malo_debug, 0,
1916 "control debugging printfs");
1917 #endif
1918 }
1919
1920 static void
1921 malo_announce(struct malo_softc *sc)
1922 {
1923 struct ifnet *ifp = sc->malo_ifp;
1924
1925 if_printf(ifp, "versions [hw %d fw %d.%d.%d.%d] (regioncode %d)\n",
1926 sc->malo_hwspecs.hwversion,
1927 (sc->malo_hwspecs.fw_releasenum >> 24) & 0xff,
1928 (sc->malo_hwspecs.fw_releasenum >> 16) & 0xff,
1929 (sc->malo_hwspecs.fw_releasenum >> 8) & 0xff,
1930 (sc->malo_hwspecs.fw_releasenum >> 0) & 0xff,
1931 sc->malo_hwspecs.regioncode);
1932
1933 if (bootverbose || malo_rxbuf != MALO_RXBUF)
1934 if_printf(ifp, "using %u rx buffers\n", malo_rxbuf);
1935 if (bootverbose || malo_txbuf != MALO_TXBUF)
1936 if_printf(ifp, "using %u tx buffers\n", malo_txbuf);
1937 }
1938
1939 /*
1940 * Convert net80211 channel to a HAL channel.
1941 */
1942 static void
1943 malo_mapchan(struct malo_hal_channel *hc, const struct ieee80211_channel *chan)
1944 {
1945 hc->channel = chan->ic_ieee;
1946
1947 *(uint32_t *)&hc->flags = 0;
1948 if (IEEE80211_IS_CHAN_2GHZ(chan))
1949 hc->flags.freqband = MALO_FREQ_BAND_2DOT4GHZ;
1950 }
1951
1952 /*
1953 * Set/change channels. If the channel is really being changed,
1954 * it's done by reseting the chip. To accomplish this we must
1955 * first cleanup any pending DMA, then restart stuff after a la
1956 * malo_init.
1957 */
1958 static int
1959 malo_chan_set(struct malo_softc *sc, struct ieee80211_channel *chan)
1960 {
1961 struct malo_hal *mh = sc->malo_mh;
1962 struct malo_hal_channel hchan;
1963
1964 DPRINTF(sc, MALO_DEBUG_RESET, "%s: chan %u MHz/flags 0x%x\n",
1965 __func__, chan->ic_freq, chan->ic_flags);
1966
1967 /*
1968 * Convert to a HAL channel description with the flags constrained
1969 * to reflect the current operating mode.
1970 */
1971 malo_mapchan(&hchan, chan);
1972 malo_hal_intrset(mh, 0); /* disable interrupts */
1973 malo_hal_setchannel(mh, &hchan);
1974 malo_hal_settxpower(mh, &hchan);
1975
1976 /*
1977 * Update internal state.
1978 */
1979 sc->malo_tx_th.wt_chan_freq = htole16(chan->ic_freq);
1980 sc->malo_rx_th.wr_chan_freq = htole16(chan->ic_freq);
1981 if (IEEE80211_IS_CHAN_ANYG(chan)) {
1982 sc->malo_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_G);
1983 sc->malo_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_G);
1984 } else {
1985 sc->malo_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_B);
1986 sc->malo_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_B);
1987 }
1988 sc->malo_curchan = hchan;
1989 malo_hal_intrset(mh, sc->malo_imask);
1990
1991 return 0;
1992 }
1993
1994 static void
1995 malo_scan_start(struct ieee80211com *ic)
1996 {
1997 struct ifnet *ifp = ic->ic_ifp;
1998 struct malo_softc *sc = ifp->if_softc;
1999
2000 DPRINTF(sc, MALO_DEBUG_STATE, "%s\n", __func__);
2001 }
2002
2003 static void
2004 malo_scan_end(struct ieee80211com *ic)
2005 {
2006 struct ifnet *ifp = ic->ic_ifp;
2007 struct malo_softc *sc = ifp->if_softc;
2008
2009 DPRINTF(sc, MALO_DEBUG_STATE, "%s\n", __func__);
2010 }
2011
2012 static void
2013 malo_set_channel(struct ieee80211com *ic)
2014 {
2015 struct ifnet *ifp = ic->ic_ifp;
2016 struct malo_softc *sc = ifp->if_softc;
2017
2018 (void) malo_chan_set(sc, ic->ic_curchan);
2019 }
2020
2021 static void
2022 malo_rx_proc(void *arg, int npending)
2023 {
2024 #define IEEE80211_DIR_DSTODS(wh) \
2025 ((((const struct ieee80211_frame *)wh)->i_fc[1] & \
2026 IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS)
2027 struct malo_softc *sc = arg;
2028 struct ifnet *ifp = sc->malo_ifp;
2029 struct ieee80211com *ic = ifp->if_l2com;
2030 struct malo_rxbuf *bf;
2031 struct malo_rxdesc *ds;
2032 struct mbuf *m, *mnew;
2033 struct ieee80211_qosframe *wh;
2034 struct ieee80211_qosframe_addr4 *wh4;
2035 struct ieee80211_node *ni;
2036 int off, len, hdrlen, pktlen, rssi, ntodo;
2037 uint8_t *data, status;
2038 uint32_t readptr, writeptr;
2039
2040 DPRINTF(sc, MALO_DEBUG_RX_PROC,
2041 "%s: pending %u rdptr(0x%x) 0x%x wrptr(0x%x) 0x%x\n",
2042 __func__, npending,
2043 sc->malo_hwspecs.rxdesc_read,
2044 malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_read),
2045 sc->malo_hwspecs.rxdesc_write,
2046 malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_write));
2047
2048 readptr = malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_read);
2049 writeptr = malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_write);
2050 if (readptr == writeptr)
2051 return;
2052
2053 bf = sc->malo_rxnext;
2054 for (ntodo = malo_rxquota; ntodo > 0 && readptr != writeptr; ntodo--) {
2055 if (bf == NULL) {
2056 bf = STAILQ_FIRST(&sc->malo_rxbuf);
2057 break;
2058 }
2059 ds = bf->bf_desc;
2060 if (bf->bf_m == NULL) {
2061 /*
2062 * If data allocation failed previously there
2063 * will be no buffer; try again to re-populate it.
2064 * Note the firmware will not advance to the next
2065 * descriptor with a dma buffer so we must mimic
2066 * this or we'll get out of sync.
2067 */
2068 DPRINTF(sc, MALO_DEBUG_ANY,
2069 "%s: rx buf w/o dma memory\n", __func__);
2070 (void)malo_rxbuf_init(sc, bf);
2071 break;
2072 }
2073 MALO_RXDESC_SYNC(sc, ds,
2074 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
2075 if (ds->rxcontrol != MALO_RXD_CTRL_DMA_OWN)
2076 break;
2077
2078 readptr = le32toh(ds->physnext);
2079
2080 #ifdef MALO_DEBUG
2081 if (sc->malo_debug & MALO_DEBUG_RECV_DESC)
2082 malo_printrxbuf(bf, 0);
2083 #endif
2084 status = ds->status;
2085 if (status & MALO_RXD_STATUS_DECRYPT_ERR_MASK) {
2086 ifp->if_ierrors++;
2087 goto rx_next;
2088 }
2089 /*
2090 * Sync the data buffer.
2091 */
2092 len = le16toh(ds->pktlen);
2093 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap,
2094 BUS_DMASYNC_POSTREAD);
2095 /*
2096 * The 802.11 header is provided all or in part at the front;
2097 * use it to calculate the true size of the header that we'll
2098 * construct below. We use this to figure out where to copy
2099 * payload prior to constructing the header.
2100 */
2101 m = bf->bf_m;
2102 data = mtod(m, uint8_t *);
2103 hdrlen = ieee80211_anyhdrsize(data + sizeof(uint16_t));
2104 off = sizeof(uint16_t) + sizeof(struct ieee80211_frame_addr4);
2105
2106 /*
2107 * Calculate RSSI. XXX wrong
2108 */
2109 rssi = 2 * ((int) ds->snr - ds->nf); /* NB: .5 dBm */
2110 if (rssi > 100)
2111 rssi = 100;
2112
2113 pktlen = hdrlen + (len - off);
2114 /*
2115 * NB: we know our frame is at least as large as
2116 * IEEE80211_MIN_LEN because there is a 4-address frame at
2117 * the front. Hence there's no need to vet the packet length.
2118 * If the frame in fact is too small it should be discarded
2119 * at the net80211 layer.
2120 */
2121
2122 /* XXX don't need mbuf, just dma buffer */
2123 mnew = malo_getrxmbuf(sc, bf);
2124 if (mnew == NULL) {
2125 ifp->if_ierrors++;
2126 goto rx_next;
2127 }
2128 /*
2129 * Attach the dma buffer to the mbuf; malo_rxbuf_init will
2130 * re-setup the rx descriptor using the replacement dma
2131 * buffer we just installed above.
2132 */
2133 bf->bf_m = mnew;
2134 m->m_data += off - hdrlen;
2135 m->m_pkthdr.len = m->m_len = pktlen;
2136 m->m_pkthdr.rcvif = ifp;
2137
2138 /*
2139 * Piece 802.11 header together.
2140 */
2141 wh = mtod(m, struct ieee80211_qosframe *);
2142 /* NB: don't need to do this sometimes but ... */
2143 /* XXX special case so we can memcpy after m_devget? */
2144 ovbcopy(data + sizeof(uint16_t), wh, hdrlen);
2145 if (IEEE80211_QOS_HAS_SEQ(wh)) {
2146 if (IEEE80211_DIR_DSTODS(wh)) {
2147 wh4 = mtod(m,
2148 struct ieee80211_qosframe_addr4*);
2149 *(uint16_t *)wh4->i_qos = ds->qosctrl;
2150 } else {
2151 *(uint16_t *)wh->i_qos = ds->qosctrl;
2152 }
2153 }
2154 if (ieee80211_radiotap_active(ic)) {
2155 sc->malo_rx_th.wr_flags = 0;
2156 sc->malo_rx_th.wr_rate = ds->rate;
2157 sc->malo_rx_th.wr_antsignal = rssi;
2158 sc->malo_rx_th.wr_antnoise = ds->nf;
2159 }
2160 #ifdef MALO_DEBUG
2161 if (IFF_DUMPPKTS_RECV(sc, wh)) {
2162 ieee80211_dump_pkt(ic, mtod(m, caddr_t),
2163 len, ds->rate, rssi);
2164 }
2165 #endif
2166 ifp->if_ipackets++;
2167
2168 /* dispatch */
2169 ni = ieee80211_find_rxnode(ic,
2170 (struct ieee80211_frame_min *)wh);
2171 if (ni != NULL) {
2172 (void) ieee80211_input(ni, m, rssi, ds->nf);
2173 ieee80211_free_node(ni);
2174 } else
2175 (void) ieee80211_input_all(ic, m, rssi, ds->nf);
2176 rx_next:
2177 /* NB: ignore ENOMEM so we process more descriptors */
2178 (void) malo_rxbuf_init(sc, bf);
2179 bf = STAILQ_NEXT(bf, bf_list);
2180 }
2181
2182 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_read, readptr);
2183 sc->malo_rxnext = bf;
2184
2185 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
2186 !IFQ_IS_EMPTY(&ifp->if_snd))
2187 malo_start(ifp);
2188 #undef IEEE80211_DIR_DSTODS
2189 }
2190
2191 static void
2192 malo_stop(struct ifnet *ifp, int disable)
2193 {
2194 struct malo_softc *sc = ifp->if_softc;
2195
2196 MALO_LOCK(sc);
2197 malo_stop_locked(ifp, disable);
2198 MALO_UNLOCK(sc);
2199 }
2200
2201 /*
2202 * Reclaim all tx queue resources.
2203 */
2204 static void
2205 malo_tx_cleanup(struct malo_softc *sc)
2206 {
2207 int i;
2208
2209 for (i = 0; i < MALO_NUM_TX_QUEUES; i++)
2210 malo_tx_cleanupq(sc, &sc->malo_txq[i]);
2211 }
2212
2213 int
2214 malo_detach(struct malo_softc *sc)
2215 {
2216 struct ifnet *ifp = sc->malo_ifp;
2217 struct ieee80211com *ic = ifp->if_l2com;
2218
2219 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n",
2220 __func__, ifp->if_flags);
2221
2222 malo_stop(ifp, 1);
2223
2224 if (sc->malo_tq != NULL) {
2225 taskqueue_drain(sc->malo_tq, &sc->malo_rxtask);
2226 taskqueue_drain(sc->malo_tq, &sc->malo_txtask);
2227 taskqueue_free(sc->malo_tq);
2228 sc->malo_tq = NULL;
2229 }
2230
2231 /*
2232 * NB: the order of these is important:
2233 * o call the 802.11 layer before detaching the hal to
2234 * insure callbacks into the driver to delete global
2235 * key cache entries can be handled
2236 * o reclaim the tx queue data structures after calling
2237 * the 802.11 layer as we'll get called back to reclaim
2238 * node state and potentially want to use them
2239 * o to cleanup the tx queues the hal is called, so detach
2240 * it last
2241 * Other than that, it's straightforward...
2242 */
2243 ieee80211_ifdetach(ic);
2244 malo_dma_cleanup(sc);
2245 malo_tx_cleanup(sc);
2246 malo_hal_detach(sc->malo_mh);
2247 if_free(ifp);
2248
2249 MALO_LOCK_DESTROY(sc);
2250
2251 return 0;
2252 }
2253
2254 void
2255 malo_shutdown(struct malo_softc *sc)
2256 {
2257 malo_stop(sc->malo_ifp, 1);
2258 }
2259
2260 void
2261 malo_suspend(struct malo_softc *sc)
2262 {
2263 struct ifnet *ifp = sc->malo_ifp;
2264
2265 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n",
2266 __func__, ifp->if_flags);
2267
2268 malo_stop(ifp, 1);
2269 }
2270
2271 void
2272 malo_resume(struct malo_softc *sc)
2273 {
2274 struct ifnet *ifp = sc->malo_ifp;
2275
2276 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n",
2277 __func__, ifp->if_flags);
2278
2279 if (ifp->if_flags & IFF_UP)
2280 malo_init(sc);
2281 }
Cache object: beb124fa4379ec8fe7188f7fb3bd12d5
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