1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2004-2006
5 * Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
6 * Copyright (c) 2006 Sam Leffler, Errno Consulting
7 * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org>
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice unmodified, this list of conditions, and the following
14 * disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 /*-
34 * Intel(R) PRO/Wireless 2100 MiniPCI driver
35 * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
36 */
37
38 #include <sys/param.h>
39 #include <sys/sysctl.h>
40 #include <sys/sockio.h>
41 #include <sys/mbuf.h>
42 #include <sys/kernel.h>
43 #include <sys/socket.h>
44 #include <sys/systm.h>
45 #include <sys/malloc.h>
46 #include <sys/queue.h>
47 #include <sys/taskqueue.h>
48 #include <sys/module.h>
49 #include <sys/bus.h>
50 #include <sys/endian.h>
51 #include <sys/linker.h>
52 #include <sys/firmware.h>
53
54 #include <machine/bus.h>
55 #include <machine/resource.h>
56 #include <sys/rman.h>
57
58 #include <dev/pci/pcireg.h>
59 #include <dev/pci/pcivar.h>
60
61 #include <net/bpf.h>
62 #include <net/if.h>
63 #include <net/if_var.h>
64 #include <net/if_arp.h>
65 #include <net/ethernet.h>
66 #include <net/if_dl.h>
67 #include <net/if_media.h>
68 #include <net/if_types.h>
69
70 #include <net80211/ieee80211_var.h>
71 #include <net80211/ieee80211_radiotap.h>
72
73 #include <netinet/in.h>
74 #include <netinet/in_systm.h>
75 #include <netinet/in_var.h>
76 #include <netinet/ip.h>
77 #include <netinet/if_ether.h>
78
79 #include <dev/ipw/if_ipwreg.h>
80 #include <dev/ipw/if_ipwvar.h>
81
82 #define IPW_DEBUG
83 #ifdef IPW_DEBUG
84 #define DPRINTF(x) do { if (ipw_debug > 0) printf x; } while (0)
85 #define DPRINTFN(n, x) do { if (ipw_debug >= (n)) printf x; } while (0)
86 int ipw_debug = 0;
87 SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level");
88 #else
89 #define DPRINTF(x)
90 #define DPRINTFN(n, x)
91 #endif
92
93 MODULE_DEPEND(ipw, pci, 1, 1, 1);
94 MODULE_DEPEND(ipw, wlan, 1, 1, 1);
95 MODULE_DEPEND(ipw, firmware, 1, 1, 1);
96
97 struct ipw_ident {
98 uint16_t vendor;
99 uint16_t device;
100 const char *name;
101 };
102
103 static const struct ipw_ident ipw_ident_table[] = {
104 { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" },
105
106 { 0, 0, NULL }
107 };
108
109 static struct ieee80211vap *ipw_vap_create(struct ieee80211com *,
110 const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
111 const uint8_t [IEEE80211_ADDR_LEN],
112 const uint8_t [IEEE80211_ADDR_LEN]);
113 static void ipw_vap_delete(struct ieee80211vap *);
114 static int ipw_dma_alloc(struct ipw_softc *);
115 static void ipw_release(struct ipw_softc *);
116 static void ipw_media_status(if_t, struct ifmediareq *);
117 static int ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int);
118 static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t);
119 static uint16_t ipw_read_chanmask(struct ipw_softc *);
120 static void ipw_rx_cmd_intr(struct ipw_softc *, struct ipw_soft_buf *);
121 static void ipw_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *);
122 static void ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *,
123 struct ipw_soft_bd *, struct ipw_soft_buf *);
124 static void ipw_rx_intr(struct ipw_softc *);
125 static void ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *);
126 static void ipw_tx_intr(struct ipw_softc *);
127 static void ipw_intr(void *);
128 static void ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int);
129 static const char * ipw_cmdname(int);
130 static int ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t);
131 static int ipw_tx_start(struct ipw_softc *, struct mbuf *,
132 struct ieee80211_node *);
133 static int ipw_raw_xmit(struct ieee80211_node *, struct mbuf *,
134 const struct ieee80211_bpf_params *);
135 static int ipw_transmit(struct ieee80211com *, struct mbuf *);
136 static void ipw_start(struct ipw_softc *);
137 static void ipw_watchdog(void *);
138 static void ipw_parent(struct ieee80211com *);
139 static void ipw_stop_master(struct ipw_softc *);
140 static int ipw_enable(struct ipw_softc *);
141 static int ipw_disable(struct ipw_softc *);
142 static int ipw_reset(struct ipw_softc *);
143 static int ipw_load_ucode(struct ipw_softc *, const char *, int);
144 static int ipw_load_firmware(struct ipw_softc *, const char *, int);
145 static int ipw_config(struct ipw_softc *);
146 static void ipw_assoc(struct ieee80211com *, struct ieee80211vap *);
147 static void ipw_disassoc(struct ieee80211com *, struct ieee80211vap *);
148 static void ipw_init_task(void *, int);
149 static void ipw_init(void *);
150 static void ipw_init_locked(struct ipw_softc *);
151 static void ipw_stop(void *);
152 static void ipw_stop_locked(struct ipw_softc *);
153 static int ipw_sysctl_stats(SYSCTL_HANDLER_ARGS);
154 static int ipw_sysctl_radio(SYSCTL_HANDLER_ARGS);
155 static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t);
156 static void ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t);
157 #if 0
158 static int ipw_read_table2(struct ipw_softc *, uint32_t, void *,
159 uint32_t *);
160 static void ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *,
161 bus_size_t);
162 #endif
163 static void ipw_write_mem_1(struct ipw_softc *, bus_size_t,
164 const uint8_t *, bus_size_t);
165 static int ipw_scan(struct ipw_softc *);
166 static void ipw_scan_start(struct ieee80211com *);
167 static void ipw_scan_end(struct ieee80211com *);
168 static void ipw_getradiocaps(struct ieee80211com *, int, int *,
169 struct ieee80211_channel[]);
170 static void ipw_set_channel(struct ieee80211com *);
171 static void ipw_scan_curchan(struct ieee80211_scan_state *,
172 unsigned long maxdwell);
173 static void ipw_scan_mindwell(struct ieee80211_scan_state *);
174
175 static int ipw_probe(device_t);
176 static int ipw_attach(device_t);
177 static int ipw_detach(device_t);
178 static int ipw_shutdown(device_t);
179 static int ipw_suspend(device_t);
180 static int ipw_resume(device_t);
181
182 static device_method_t ipw_methods[] = {
183 /* Device interface */
184 DEVMETHOD(device_probe, ipw_probe),
185 DEVMETHOD(device_attach, ipw_attach),
186 DEVMETHOD(device_detach, ipw_detach),
187 DEVMETHOD(device_shutdown, ipw_shutdown),
188 DEVMETHOD(device_suspend, ipw_suspend),
189 DEVMETHOD(device_resume, ipw_resume),
190
191 DEVMETHOD_END
192 };
193
194 static driver_t ipw_driver = {
195 "ipw",
196 ipw_methods,
197 sizeof (struct ipw_softc)
198 };
199
200 DRIVER_MODULE(ipw, pci, ipw_driver, NULL, NULL);
201 MODULE_PNP_INFO("U16:vendor;U16:device;D:#", pci, ipw, ipw_ident_table,
202 nitems(ipw_ident_table) - 1);
203
204 MODULE_VERSION(ipw, 1);
205
206 static int
ipw_probe(device_t dev)207 ipw_probe(device_t dev)
208 {
209 const struct ipw_ident *ident;
210
211 for (ident = ipw_ident_table; ident->name != NULL; ident++) {
212 if (pci_get_vendor(dev) == ident->vendor &&
213 pci_get_device(dev) == ident->device) {
214 device_set_desc(dev, ident->name);
215 return (BUS_PROBE_DEFAULT);
216 }
217 }
218 return ENXIO;
219 }
220
221 /* Base Address Register */
222 static int
ipw_attach(device_t dev)223 ipw_attach(device_t dev)
224 {
225 struct ipw_softc *sc = device_get_softc(dev);
226 struct ieee80211com *ic = &sc->sc_ic;
227 uint16_t val;
228 int error, i;
229
230 sc->sc_dev = dev;
231
232 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
233 MTX_DEF | MTX_RECURSE);
234 mbufq_init(&sc->sc_snd, ifqmaxlen);
235 TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc);
236 callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
237
238 pci_write_config(dev, 0x41, 0, 1);
239
240 /* enable bus-mastering */
241 pci_enable_busmaster(dev);
242
243 i = PCIR_BAR(0);
244 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE);
245 if (sc->mem == NULL) {
246 device_printf(dev, "could not allocate memory resource\n");
247 goto fail;
248 }
249
250 sc->sc_st = rman_get_bustag(sc->mem);
251 sc->sc_sh = rman_get_bushandle(sc->mem);
252
253 i = 0;
254 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i,
255 RF_ACTIVE | RF_SHAREABLE);
256 if (sc->irq == NULL) {
257 device_printf(dev, "could not allocate interrupt resource\n");
258 goto fail1;
259 }
260
261 if (ipw_reset(sc) != 0) {
262 device_printf(dev, "could not reset adapter\n");
263 goto fail2;
264 }
265
266 if (ipw_dma_alloc(sc) != 0) {
267 device_printf(dev, "could not allocate DMA resources\n");
268 goto fail2;
269 }
270
271 ic->ic_softc = sc;
272 ic->ic_name = device_get_nameunit(dev);
273 ic->ic_opmode = IEEE80211_M_STA;
274 ic->ic_phytype = IEEE80211_T_DS;
275
276 /* set device capabilities */
277 ic->ic_caps =
278 IEEE80211_C_STA /* station mode supported */
279 | IEEE80211_C_IBSS /* IBSS mode supported */
280 | IEEE80211_C_MONITOR /* monitor mode supported */
281 | IEEE80211_C_PMGT /* power save supported */
282 | IEEE80211_C_SHPREAMBLE /* short preamble supported */
283 | IEEE80211_C_WPA /* 802.11i supported */
284 ;
285
286 ic->ic_flags_ext |= IEEE80211_FEXT_SEQNO_OFFLOAD;
287
288 /* read MAC address from EEPROM */
289 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0);
290 ic->ic_macaddr[0] = val >> 8;
291 ic->ic_macaddr[1] = val & 0xff;
292 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1);
293 ic->ic_macaddr[2] = val >> 8;
294 ic->ic_macaddr[3] = val & 0xff;
295 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2);
296 ic->ic_macaddr[4] = val >> 8;
297 ic->ic_macaddr[5] = val & 0xff;
298
299 sc->chanmask = ipw_read_chanmask(sc);
300 ipw_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans,
301 ic->ic_channels);
302
303 /* check support for radio transmitter switch in EEPROM */
304 if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8))
305 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH;
306
307 ieee80211_ifattach(ic);
308 ic->ic_scan_start = ipw_scan_start;
309 ic->ic_scan_end = ipw_scan_end;
310 ic->ic_getradiocaps = ipw_getradiocaps;
311 ic->ic_set_channel = ipw_set_channel;
312 ic->ic_scan_curchan = ipw_scan_curchan;
313 ic->ic_scan_mindwell = ipw_scan_mindwell;
314 ic->ic_raw_xmit = ipw_raw_xmit;
315 ic->ic_vap_create = ipw_vap_create;
316 ic->ic_vap_delete = ipw_vap_delete;
317 ic->ic_transmit = ipw_transmit;
318 ic->ic_parent = ipw_parent;
319
320 ieee80211_radiotap_attach(ic,
321 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
322 IPW_TX_RADIOTAP_PRESENT,
323 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
324 IPW_RX_RADIOTAP_PRESENT);
325
326 /*
327 * Add a few sysctl knobs.
328 */
329 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
330 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio",
331 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT, sc, 0,
332 ipw_sysctl_radio, "I",
333 "radio transmitter switch state (0=off, 1=on)");
334
335 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
336 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats",
337 CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_NEEDGIANT, sc, 0,
338 ipw_sysctl_stats, "S", "statistics");
339
340 /*
341 * Hook our interrupt after all initialization is complete.
342 */
343 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
344 NULL, ipw_intr, sc, &sc->sc_ih);
345 if (error != 0) {
346 device_printf(dev, "could not set up interrupt\n");
347 goto fail3;
348 }
349
350 if (bootverbose)
351 ieee80211_announce(ic);
352
353 return 0;
354 fail3:
355 ipw_release(sc);
356 fail2:
357 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
358 fail1:
359 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
360 sc->mem);
361 fail:
362 mtx_destroy(&sc->sc_mtx);
363 return ENXIO;
364 }
365
366 static int
ipw_detach(device_t dev)367 ipw_detach(device_t dev)
368 {
369 struct ipw_softc *sc = device_get_softc(dev);
370 struct ieee80211com *ic = &sc->sc_ic;
371
372 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
373
374 ieee80211_draintask(ic, &sc->sc_init_task);
375 ipw_stop(sc);
376
377 ieee80211_ifdetach(ic);
378
379 callout_drain(&sc->sc_wdtimer);
380 mbufq_drain(&sc->sc_snd);
381
382 ipw_release(sc);
383
384 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
385
386 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
387 sc->mem);
388
389 if (sc->sc_firmware != NULL) {
390 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
391 sc->sc_firmware = NULL;
392 }
393
394 mtx_destroy(&sc->sc_mtx);
395
396 return 0;
397 }
398
399 static struct ieee80211vap *
ipw_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 mac[IEEE80211_ADDR_LEN])400 ipw_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
401 enum ieee80211_opmode opmode, int flags,
402 const uint8_t bssid[IEEE80211_ADDR_LEN],
403 const uint8_t mac[IEEE80211_ADDR_LEN])
404 {
405 struct ipw_softc *sc = ic->ic_softc;
406 struct ipw_vap *ivp;
407 struct ieee80211vap *vap;
408 const struct firmware *fp;
409 const struct ipw_firmware_hdr *hdr;
410 const char *imagename;
411
412 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
413 return NULL;
414
415 switch (opmode) {
416 case IEEE80211_M_STA:
417 imagename = "ipw_bss";
418 break;
419 case IEEE80211_M_IBSS:
420 imagename = "ipw_ibss";
421 break;
422 case IEEE80211_M_MONITOR:
423 imagename = "ipw_monitor";
424 break;
425 default:
426 return NULL;
427 }
428
429 /*
430 * Load firmware image using the firmware(9) subsystem. Doing
431 * this unlocked is ok since we're single-threaded by the
432 * 802.11 layer.
433 */
434 if (sc->sc_firmware == NULL ||
435 strcmp(sc->sc_firmware->name, imagename) != 0) {
436 if (sc->sc_firmware != NULL)
437 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
438 sc->sc_firmware = firmware_get(imagename);
439 }
440 if (sc->sc_firmware == NULL) {
441 device_printf(sc->sc_dev,
442 "could not load firmware image '%s'\n", imagename);
443 return NULL;
444 }
445 fp = sc->sc_firmware;
446 if (fp->datasize < sizeof *hdr) {
447 device_printf(sc->sc_dev,
448 "firmware image too short %zu\n", fp->datasize);
449 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
450 sc->sc_firmware = NULL;
451 return NULL;
452 }
453 hdr = (const struct ipw_firmware_hdr *)fp->data;
454 if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) +
455 le32toh(hdr->ucodesz)) {
456 device_printf(sc->sc_dev,
457 "firmware image too short %zu\n", fp->datasize);
458 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
459 sc->sc_firmware = NULL;
460 return NULL;
461 }
462
463 ivp = malloc(sizeof(struct ipw_vap), M_80211_VAP, M_WAITOK | M_ZERO);
464 vap = &ivp->vap;
465
466 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
467 /* override with driver methods */
468 ivp->newstate = vap->iv_newstate;
469 vap->iv_newstate = ipw_newstate;
470
471 /* complete setup */
472 ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status,
473 mac);
474 ic->ic_opmode = opmode;
475 return vap;
476 }
477
478 static void
ipw_vap_delete(struct ieee80211vap * vap)479 ipw_vap_delete(struct ieee80211vap *vap)
480 {
481 struct ipw_vap *ivp = IPW_VAP(vap);
482
483 ieee80211_vap_detach(vap);
484 free(ivp, M_80211_VAP);
485 }
486
487 static int
ipw_dma_alloc(struct ipw_softc * sc)488 ipw_dma_alloc(struct ipw_softc *sc)
489 {
490 struct ipw_soft_bd *sbd;
491 struct ipw_soft_hdr *shdr;
492 struct ipw_soft_buf *sbuf;
493 bus_addr_t physaddr;
494 int error, i;
495
496 /*
497 * Allocate parent DMA tag for subsequent allocations.
498 */
499 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
500 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
501 BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED,
502 BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->parent_dmat);
503 if (error != 0) {
504 device_printf(sc->sc_dev, "could not create parent DMA tag\n");
505 goto fail;
506 }
507
508 /*
509 * Allocate and map tx ring.
510 */
511 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
512 BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL,
513 NULL, &sc->tbd_dmat);
514 if (error != 0) {
515 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
516 goto fail;
517 }
518
519 error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list,
520 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map);
521 if (error != 0) {
522 device_printf(sc->sc_dev,
523 "could not allocate tx ring DMA memory\n");
524 goto fail;
525 }
526
527 error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list,
528 IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0);
529 if (error != 0) {
530 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n");
531 goto fail;
532 }
533
534 /*
535 * Allocate and map rx ring.
536 */
537 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
538 BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL,
539 NULL, &sc->rbd_dmat);
540 if (error != 0) {
541 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n");
542 goto fail;
543 }
544
545 error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list,
546 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map);
547 if (error != 0) {
548 device_printf(sc->sc_dev,
549 "could not allocate rx ring DMA memory\n");
550 goto fail;
551 }
552
553 error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list,
554 IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0);
555 if (error != 0) {
556 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n");
557 goto fail;
558 }
559
560 /*
561 * Allocate and map status ring.
562 */
563 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
564 BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0,
565 NULL, NULL, &sc->status_dmat);
566 if (error != 0) {
567 device_printf(sc->sc_dev,
568 "could not create status ring DMA tag\n");
569 goto fail;
570 }
571
572 error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list,
573 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map);
574 if (error != 0) {
575 device_printf(sc->sc_dev,
576 "could not allocate status ring DMA memory\n");
577 goto fail;
578 }
579
580 error = bus_dmamap_load(sc->status_dmat, sc->status_map,
581 sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys,
582 0);
583 if (error != 0) {
584 device_printf(sc->sc_dev,
585 "could not map status ring DMA memory\n");
586 goto fail;
587 }
588
589 /*
590 * Allocate command DMA map.
591 */
592 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
593 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1,
594 sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat);
595 if (error != 0) {
596 device_printf(sc->sc_dev, "could not create command DMA tag\n");
597 goto fail;
598 }
599
600 error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map);
601 if (error != 0) {
602 device_printf(sc->sc_dev,
603 "could not create command DMA map\n");
604 goto fail;
605 }
606
607 /*
608 * Allocate headers DMA maps.
609 */
610 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
611 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1,
612 sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat);
613 if (error != 0) {
614 device_printf(sc->sc_dev, "could not create header DMA tag\n");
615 goto fail;
616 }
617
618 SLIST_INIT(&sc->free_shdr);
619 for (i = 0; i < IPW_NDATA; i++) {
620 shdr = &sc->shdr_list[i];
621 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map);
622 if (error != 0) {
623 device_printf(sc->sc_dev,
624 "could not create header DMA map\n");
625 goto fail;
626 }
627 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
628 }
629
630 /*
631 * Allocate tx buffers DMA maps.
632 */
633 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
634 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0,
635 NULL, NULL, &sc->txbuf_dmat);
636 if (error != 0) {
637 device_printf(sc->sc_dev, "could not create tx DMA tag\n");
638 goto fail;
639 }
640
641 SLIST_INIT(&sc->free_sbuf);
642 for (i = 0; i < IPW_NDATA; i++) {
643 sbuf = &sc->tx_sbuf_list[i];
644 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map);
645 if (error != 0) {
646 device_printf(sc->sc_dev,
647 "could not create tx DMA map\n");
648 goto fail;
649 }
650 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
651 }
652
653 /*
654 * Initialize tx ring.
655 */
656 for (i = 0; i < IPW_NTBD; i++) {
657 sbd = &sc->stbd_list[i];
658 sbd->bd = &sc->tbd_list[i];
659 sbd->type = IPW_SBD_TYPE_NOASSOC;
660 }
661
662 /*
663 * Pre-allocate rx buffers and DMA maps.
664 */
665 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
666 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
667 NULL, &sc->rxbuf_dmat);
668 if (error != 0) {
669 device_printf(sc->sc_dev, "could not create rx DMA tag\n");
670 goto fail;
671 }
672
673 for (i = 0; i < IPW_NRBD; i++) {
674 sbd = &sc->srbd_list[i];
675 sbuf = &sc->rx_sbuf_list[i];
676 sbd->bd = &sc->rbd_list[i];
677
678 sbuf->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
679 if (sbuf->m == NULL) {
680 device_printf(sc->sc_dev,
681 "could not allocate rx mbuf\n");
682 error = ENOMEM;
683 goto fail;
684 }
685
686 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map);
687 if (error != 0) {
688 device_printf(sc->sc_dev,
689 "could not create rx DMA map\n");
690 goto fail;
691 }
692
693 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
694 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
695 &physaddr, 0);
696 if (error != 0) {
697 device_printf(sc->sc_dev,
698 "could not map rx DMA memory\n");
699 goto fail;
700 }
701
702 sbd->type = IPW_SBD_TYPE_DATA;
703 sbd->priv = sbuf;
704 sbd->bd->physaddr = htole32(physaddr);
705 sbd->bd->len = htole32(MCLBYTES);
706 }
707
708 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
709
710 return 0;
711
712 fail: ipw_release(sc);
713 return error;
714 }
715
716 static void
ipw_release(struct ipw_softc * sc)717 ipw_release(struct ipw_softc *sc)
718 {
719 struct ipw_soft_buf *sbuf;
720 int i;
721
722 if (sc->parent_dmat != NULL) {
723 bus_dma_tag_destroy(sc->parent_dmat);
724 }
725
726 if (sc->tbd_dmat != NULL) {
727 bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map);
728 bus_dmamem_free(sc->tbd_dmat, sc->tbd_list, sc->tbd_map);
729 bus_dma_tag_destroy(sc->tbd_dmat);
730 }
731
732 if (sc->rbd_dmat != NULL) {
733 if (sc->rbd_list != NULL) {
734 bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map);
735 bus_dmamem_free(sc->rbd_dmat, sc->rbd_list,
736 sc->rbd_map);
737 }
738 bus_dma_tag_destroy(sc->rbd_dmat);
739 }
740
741 if (sc->status_dmat != NULL) {
742 if (sc->status_list != NULL) {
743 bus_dmamap_unload(sc->status_dmat, sc->status_map);
744 bus_dmamem_free(sc->status_dmat, sc->status_list,
745 sc->status_map);
746 }
747 bus_dma_tag_destroy(sc->status_dmat);
748 }
749
750 for (i = 0; i < IPW_NTBD; i++)
751 ipw_release_sbd(sc, &sc->stbd_list[i]);
752
753 if (sc->cmd_dmat != NULL) {
754 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map);
755 bus_dma_tag_destroy(sc->cmd_dmat);
756 }
757
758 if (sc->hdr_dmat != NULL) {
759 for (i = 0; i < IPW_NDATA; i++)
760 bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map);
761 bus_dma_tag_destroy(sc->hdr_dmat);
762 }
763
764 if (sc->txbuf_dmat != NULL) {
765 for (i = 0; i < IPW_NDATA; i++) {
766 bus_dmamap_destroy(sc->txbuf_dmat,
767 sc->tx_sbuf_list[i].map);
768 }
769 bus_dma_tag_destroy(sc->txbuf_dmat);
770 }
771
772 if (sc->rxbuf_dmat != NULL) {
773 for (i = 0; i < IPW_NRBD; i++) {
774 sbuf = &sc->rx_sbuf_list[i];
775 if (sbuf->m != NULL) {
776 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map,
777 BUS_DMASYNC_POSTREAD);
778 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
779 m_freem(sbuf->m);
780 }
781 bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map);
782 }
783 bus_dma_tag_destroy(sc->rxbuf_dmat);
784 }
785 }
786
787 static int
ipw_shutdown(device_t dev)788 ipw_shutdown(device_t dev)
789 {
790 struct ipw_softc *sc = device_get_softc(dev);
791
792 ipw_stop(sc);
793
794 return 0;
795 }
796
797 static int
ipw_suspend(device_t dev)798 ipw_suspend(device_t dev)
799 {
800 struct ipw_softc *sc = device_get_softc(dev);
801 struct ieee80211com *ic = &sc->sc_ic;
802
803 ieee80211_suspend_all(ic);
804 return 0;
805 }
806
807 static int
ipw_resume(device_t dev)808 ipw_resume(device_t dev)
809 {
810 struct ipw_softc *sc = device_get_softc(dev);
811 struct ieee80211com *ic = &sc->sc_ic;
812
813 pci_write_config(dev, 0x41, 0, 1);
814
815 ieee80211_resume_all(ic);
816 return 0;
817 }
818
819 static int
ipw_cvtrate(int ipwrate)820 ipw_cvtrate(int ipwrate)
821 {
822 switch (ipwrate) {
823 case IPW_RATE_DS1: return 2;
824 case IPW_RATE_DS2: return 4;
825 case IPW_RATE_DS5: return 11;
826 case IPW_RATE_DS11: return 22;
827 }
828 return 0;
829 }
830
831 /*
832 * The firmware automatically adapts the transmit speed. We report its current
833 * value here.
834 */
835 static void
ipw_media_status(if_t ifp,struct ifmediareq * imr)836 ipw_media_status(if_t ifp, struct ifmediareq *imr)
837 {
838 struct ieee80211vap *vap = if_getsoftc(ifp);
839 struct ieee80211com *ic = vap->iv_ic;
840 struct ipw_softc *sc = ic->ic_softc;
841
842 /* read current transmission rate from adapter */
843 ieee80211_node_set_txrate_dot11rate(vap->iv_bss,
844 ipw_cvtrate(ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf));
845 ieee80211_media_status(ifp, imr);
846 }
847
848 static int
ipw_newstate(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)849 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
850 {
851 struct ipw_vap *ivp = IPW_VAP(vap);
852 struct ieee80211com *ic = vap->iv_ic;
853 struct ipw_softc *sc = ic->ic_softc;
854 enum ieee80211_state ostate;
855
856 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
857 ieee80211_state_name[vap->iv_state],
858 ieee80211_state_name[nstate], sc->flags));
859
860 ostate = vap->iv_state;
861 IEEE80211_UNLOCK(ic);
862
863 switch (nstate) {
864 case IEEE80211_S_RUN:
865 if (ic->ic_opmode == IEEE80211_M_IBSS) {
866 /*
867 * XXX when joining an ibss network we are called
868 * with a SCAN -> RUN transition on scan complete.
869 * Use that to call ipw_assoc. On completing the
870 * join we are then called again with an AUTH -> RUN
871 * transition and we want to do nothing. This is
872 * all totally bogus and needs to be redone.
873 */
874 if (ostate == IEEE80211_S_SCAN)
875 ipw_assoc(ic, vap);
876 }
877 break;
878
879 case IEEE80211_S_INIT:
880 if (sc->flags & IPW_FLAG_ASSOCIATED)
881 ipw_disassoc(ic, vap);
882 break;
883
884 case IEEE80211_S_AUTH:
885 /*
886 * Move to ASSOC state after the ipw_assoc() call. Firmware
887 * takes care of authentication, after the call we'll receive
888 * only an assoc response which would otherwise be discared
889 * if we are still in AUTH state.
890 */
891 nstate = IEEE80211_S_ASSOC;
892 ipw_assoc(ic, vap);
893 break;
894
895 case IEEE80211_S_ASSOC:
896 /*
897 * If we are not transitioning from AUTH then resend the
898 * association request.
899 */
900 if (ostate != IEEE80211_S_AUTH)
901 ipw_assoc(ic, vap);
902 break;
903
904 default:
905 break;
906 }
907 IEEE80211_LOCK(ic);
908 return ivp->newstate(vap, nstate, arg);
909 }
910
911 /*
912 * Read 16 bits at address 'addr' from the serial EEPROM.
913 */
914 static uint16_t
ipw_read_prom_word(struct ipw_softc * sc,uint8_t addr)915 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr)
916 {
917 uint32_t tmp;
918 uint16_t val;
919 int n;
920
921 /* clock C once before the first command */
922 IPW_EEPROM_CTL(sc, 0);
923 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
924 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
925 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
926
927 /* write start bit (1) */
928 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
929 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
930
931 /* write READ opcode (10) */
932 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
933 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
934 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
935 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
936
937 /* write address A7-A0 */
938 for (n = 7; n >= 0; n--) {
939 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
940 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D));
941 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
942 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C);
943 }
944
945 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
946
947 /* read data Q15-Q0 */
948 val = 0;
949 for (n = 15; n >= 0; n--) {
950 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
951 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
952 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL);
953 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n;
954 }
955
956 IPW_EEPROM_CTL(sc, 0);
957
958 /* clear Chip Select and clock C */
959 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
960 IPW_EEPROM_CTL(sc, 0);
961 IPW_EEPROM_CTL(sc, IPW_EEPROM_C);
962
963 return le16toh(val);
964 }
965
966 static uint16_t
ipw_read_chanmask(struct ipw_softc * sc)967 ipw_read_chanmask(struct ipw_softc *sc)
968 {
969 uint16_t val;
970
971 /* set supported .11b channels (read from EEPROM) */
972 if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0)
973 val = 0x7ff; /* default to channels 1-11 */
974 val <<= 1;
975
976 return (val);
977 }
978
979 static void
ipw_rx_cmd_intr(struct ipw_softc * sc,struct ipw_soft_buf * sbuf)980 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
981 {
982 struct ipw_cmd *cmd;
983
984 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
985
986 cmd = mtod(sbuf->m, struct ipw_cmd *);
987
988 DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n",
989 ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type),
990 le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len),
991 le32toh(cmd->status)));
992
993 sc->flags &= ~IPW_FLAG_BUSY;
994 wakeup(sc);
995 }
996
997 static void
ipw_rx_newstate_intr(struct ipw_softc * sc,struct ipw_soft_buf * sbuf)998 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
999 {
1000 #define IEEESTATE(vap) ieee80211_state_name[vap->iv_state]
1001 struct ieee80211com *ic = &sc->sc_ic;
1002 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1003 uint32_t state;
1004
1005 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1006
1007 state = le32toh(*mtod(sbuf->m, uint32_t *));
1008
1009 switch (state) {
1010 case IPW_STATE_ASSOCIATED:
1011 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n",
1012 IEEESTATE(vap), sc->flags));
1013 /* XXX suppress state change in case the fw auto-associates */
1014 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) {
1015 DPRINTF(("Unexpected association (%s, flags 0x%x)\n",
1016 IEEESTATE(vap), sc->flags));
1017 break;
1018 }
1019 sc->flags &= ~IPW_FLAG_ASSOCIATING;
1020 sc->flags |= IPW_FLAG_ASSOCIATED;
1021 break;
1022
1023 case IPW_STATE_SCANNING:
1024 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n",
1025 IEEESTATE(vap), sc->flags));
1026 /*
1027 * NB: Check driver state for association on assoc
1028 * loss as the firmware will immediately start to
1029 * scan and we would treat it as a beacon miss if
1030 * we checked the 802.11 layer state.
1031 */
1032 if (sc->flags & IPW_FLAG_ASSOCIATED) {
1033 IPW_UNLOCK(sc);
1034 /* XXX probably need to issue disassoc to fw */
1035 ieee80211_beacon_miss(ic);
1036 IPW_LOCK(sc);
1037 }
1038 break;
1039
1040 case IPW_STATE_SCAN_COMPLETE:
1041 /*
1042 * XXX For some reason scan requests generate scan
1043 * started + scan done events before any traffic is
1044 * received (e.g. probe response frames). We work
1045 * around this by marking the HACK flag and skipping
1046 * the first scan complete event.
1047 */
1048 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n",
1049 IEEESTATE(vap), sc->flags));
1050 if (sc->flags & IPW_FLAG_HACK) {
1051 sc->flags &= ~IPW_FLAG_HACK;
1052 break;
1053 }
1054 if (sc->flags & IPW_FLAG_SCANNING) {
1055 IPW_UNLOCK(sc);
1056 ieee80211_scan_done(vap);
1057 IPW_LOCK(sc);
1058 sc->flags &= ~IPW_FLAG_SCANNING;
1059 sc->sc_scan_timer = 0;
1060 }
1061 break;
1062
1063 case IPW_STATE_ASSOCIATION_LOST:
1064 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n",
1065 IEEESTATE(vap), sc->flags));
1066 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1067 if (vap->iv_state == IEEE80211_S_RUN) {
1068 IPW_UNLOCK(sc);
1069 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1070 IPW_LOCK(sc);
1071 }
1072 break;
1073
1074 case IPW_STATE_DISABLED:
1075 /* XXX? is this right? */
1076 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING |
1077 IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1078 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n",
1079 IEEESTATE(vap), sc->flags));
1080 break;
1081
1082 case IPW_STATE_RADIO_DISABLED:
1083 device_printf(sc->sc_dev, "radio turned off\n");
1084 ieee80211_notify_radio(ic, 0);
1085 ipw_stop_locked(sc);
1086 /* XXX start polling thread to detect radio on */
1087 break;
1088
1089 default:
1090 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n",
1091 __func__, state, IEEESTATE(vap), sc->flags));
1092 break;
1093 }
1094 #undef IEEESTATE
1095 }
1096
1097 /*
1098 * Set driver state for current channel.
1099 */
1100 static void
ipw_setcurchan(struct ipw_softc * sc,struct ieee80211_channel * chan)1101 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan)
1102 {
1103 struct ieee80211com *ic = &sc->sc_ic;
1104
1105 ic->ic_curchan = chan;
1106 ieee80211_radiotap_chan_change(ic);
1107 }
1108
1109 /*
1110 * XXX: Hack to set the current channel to the value advertised in beacons or
1111 * probe responses. Only used during AP detection.
1112 */
1113 static void
ipw_fix_channel(struct ipw_softc * sc,struct mbuf * m)1114 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m)
1115 {
1116 struct ieee80211com *ic = &sc->sc_ic;
1117 struct ieee80211_channel *c;
1118 struct ieee80211_frame *wh;
1119 uint8_t subtype;
1120 uint8_t *frm, *efrm;
1121
1122 wh = mtod(m, struct ieee80211_frame *);
1123
1124 if (!IEEE80211_IS_MGMT(wh))
1125 return;
1126
1127 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1128
1129 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
1130 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1131 return;
1132
1133 /* XXX use ieee80211_parse_beacon */
1134 frm = (uint8_t *)(wh + 1);
1135 efrm = mtod(m, uint8_t *) + m->m_len;
1136
1137 frm += 12; /* skip tstamp, bintval and capinfo fields */
1138 while (frm < efrm) {
1139 if (*frm == IEEE80211_ELEMID_DSPARMS)
1140 #if IEEE80211_CHAN_MAX < 255
1141 if (frm[2] <= IEEE80211_CHAN_MAX)
1142 #endif
1143 {
1144 DPRINTF(("Fixing channel to %d\n", frm[2]));
1145 c = ieee80211_find_channel(ic,
1146 ieee80211_ieee2mhz(frm[2], 0),
1147 IEEE80211_CHAN_B);
1148 if (c == NULL)
1149 c = &ic->ic_channels[0];
1150 ipw_setcurchan(sc, c);
1151 }
1152
1153 frm += frm[1] + 2;
1154 }
1155 }
1156
1157 static void
ipw_rx_data_intr(struct ipw_softc * sc,struct ipw_status * status,struct ipw_soft_bd * sbd,struct ipw_soft_buf * sbuf)1158 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status,
1159 struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf)
1160 {
1161 struct ieee80211com *ic = &sc->sc_ic;
1162 struct mbuf *mnew, *m;
1163 struct ieee80211_node *ni;
1164 bus_addr_t physaddr;
1165 int error;
1166 int8_t rssi, nf;
1167
1168 DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len),
1169 status->rssi));
1170
1171 if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) ||
1172 le32toh(status->len) > MCLBYTES)
1173 return;
1174
1175 /*
1176 * Try to allocate a new mbuf for this ring element and load it before
1177 * processing the current mbuf. If the ring element cannot be loaded,
1178 * drop the received packet and reuse the old mbuf. In the unlikely
1179 * case that the old mbuf can't be reloaded either, explicitly panic.
1180 */
1181 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1182 if (mnew == NULL) {
1183 counter_u64_add(ic->ic_ierrors, 1);
1184 return;
1185 }
1186
1187 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1188 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
1189
1190 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *),
1191 MCLBYTES, ipw_dma_map_addr, &physaddr, 0);
1192 if (error != 0) {
1193 m_freem(mnew);
1194
1195 /* try to reload the old mbuf */
1196 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
1197 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
1198 &physaddr, 0);
1199 if (error != 0) {
1200 /* very unlikely that it will fail... */
1201 panic("%s: could not load old rx mbuf",
1202 device_get_name(sc->sc_dev));
1203 }
1204 counter_u64_add(ic->ic_ierrors, 1);
1205 return;
1206 }
1207
1208 /*
1209 * New mbuf successfully loaded, update Rx ring and continue
1210 * processing.
1211 */
1212 m = sbuf->m;
1213 sbuf->m = mnew;
1214 sbd->bd->physaddr = htole32(physaddr);
1215 m->m_pkthdr.len = m->m_len = le32toh(status->len);
1216
1217 rssi = status->rssi + IPW_RSSI_TO_DBM;
1218 nf = -95;
1219 if (ieee80211_radiotap_active(ic)) {
1220 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap;
1221
1222 tap->wr_flags = 0;
1223 tap->wr_antsignal = rssi;
1224 tap->wr_antnoise = nf;
1225 }
1226
1227 if (sc->flags & IPW_FLAG_SCANNING)
1228 ipw_fix_channel(sc, m);
1229
1230 IPW_UNLOCK(sc);
1231 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1232 if (ni != NULL) {
1233 (void) ieee80211_input(ni, m, rssi - nf, nf);
1234 ieee80211_free_node(ni);
1235 } else
1236 (void) ieee80211_input_all(ic, m, rssi - nf, nf);
1237 IPW_LOCK(sc);
1238
1239 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1240 }
1241
1242 static void
ipw_rx_intr(struct ipw_softc * sc)1243 ipw_rx_intr(struct ipw_softc *sc)
1244 {
1245 struct ipw_status *status;
1246 struct ipw_soft_bd *sbd;
1247 struct ipw_soft_buf *sbuf;
1248 uint32_t r, i;
1249
1250 if (!(sc->flags & IPW_FLAG_FW_INITED))
1251 return;
1252
1253 r = CSR_READ_4(sc, IPW_CSR_RX_READ);
1254
1255 bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD);
1256
1257 for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) {
1258 status = &sc->status_list[i];
1259 sbd = &sc->srbd_list[i];
1260 sbuf = sbd->priv;
1261
1262 switch (le16toh(status->code) & 0xf) {
1263 case IPW_STATUS_CODE_COMMAND:
1264 ipw_rx_cmd_intr(sc, sbuf);
1265 break;
1266
1267 case IPW_STATUS_CODE_NEWSTATE:
1268 ipw_rx_newstate_intr(sc, sbuf);
1269 break;
1270
1271 case IPW_STATUS_CODE_DATA_802_3:
1272 case IPW_STATUS_CODE_DATA_802_11:
1273 ipw_rx_data_intr(sc, status, sbd, sbuf);
1274 break;
1275
1276 case IPW_STATUS_CODE_NOTIFICATION:
1277 DPRINTFN(2, ("notification status, len %u flags 0x%x\n",
1278 le32toh(status->len), status->flags));
1279 /* XXX maybe drive state machine AUTH->ASSOC? */
1280 break;
1281
1282 default:
1283 device_printf(sc->sc_dev, "unexpected status code %u\n",
1284 le16toh(status->code));
1285 }
1286
1287 /* firmware was killed, stop processing received frames */
1288 if (!(sc->flags & IPW_FLAG_FW_INITED))
1289 return;
1290
1291 sbd->bd->flags = 0;
1292 }
1293
1294 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1295
1296 /* kick the firmware */
1297 sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1;
1298 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
1299 }
1300
1301 static void
ipw_release_sbd(struct ipw_softc * sc,struct ipw_soft_bd * sbd)1302 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd)
1303 {
1304 struct ipw_soft_hdr *shdr;
1305 struct ipw_soft_buf *sbuf;
1306
1307 switch (sbd->type) {
1308 case IPW_SBD_TYPE_COMMAND:
1309 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map,
1310 BUS_DMASYNC_POSTWRITE);
1311 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map);
1312 break;
1313
1314 case IPW_SBD_TYPE_HEADER:
1315 shdr = sbd->priv;
1316 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE);
1317 bus_dmamap_unload(sc->hdr_dmat, shdr->map);
1318 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
1319 break;
1320
1321 case IPW_SBD_TYPE_DATA:
1322 sbuf = sbd->priv;
1323 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map,
1324 BUS_DMASYNC_POSTWRITE);
1325 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1326 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
1327
1328 ieee80211_tx_complete(sbuf->ni, sbuf->m, 0/*XXX*/);
1329
1330 sc->sc_tx_timer = 0;
1331 break;
1332 }
1333
1334 sbd->type = IPW_SBD_TYPE_NOASSOC;
1335 }
1336
1337 static void
ipw_tx_intr(struct ipw_softc * sc)1338 ipw_tx_intr(struct ipw_softc *sc)
1339 {
1340 struct ipw_soft_bd *sbd;
1341 uint32_t r, i;
1342
1343 if (!(sc->flags & IPW_FLAG_FW_INITED))
1344 return;
1345
1346 r = CSR_READ_4(sc, IPW_CSR_TX_READ);
1347
1348 for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) {
1349 sbd = &sc->stbd_list[i];
1350 ipw_release_sbd(sc, sbd);
1351 sc->txfree++;
1352 }
1353
1354 /* remember what the firmware has processed */
1355 sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1;
1356
1357 ipw_start(sc);
1358 }
1359
1360 static void
ipw_fatal_error_intr(struct ipw_softc * sc)1361 ipw_fatal_error_intr(struct ipw_softc *sc)
1362 {
1363 struct ieee80211com *ic = &sc->sc_ic;
1364 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1365
1366 device_printf(sc->sc_dev, "firmware error\n");
1367 if (vap != NULL) {
1368 IPW_UNLOCK(sc);
1369 ieee80211_cancel_scan(vap);
1370 IPW_LOCK(sc);
1371 }
1372 ieee80211_runtask(ic, &sc->sc_init_task);
1373 }
1374
1375 static void
ipw_intr(void * arg)1376 ipw_intr(void *arg)
1377 {
1378 struct ipw_softc *sc = arg;
1379 uint32_t r;
1380
1381 IPW_LOCK(sc);
1382
1383 r = CSR_READ_4(sc, IPW_CSR_INTR);
1384 if (r == 0 || r == 0xffffffff)
1385 goto done;
1386
1387 /* disable interrupts */
1388 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1389
1390 /* acknowledge all interrupts */
1391 CSR_WRITE_4(sc, IPW_CSR_INTR, r);
1392
1393 if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) {
1394 ipw_fatal_error_intr(sc);
1395 goto done;
1396 }
1397
1398 if (r & IPW_INTR_FW_INIT_DONE)
1399 wakeup(sc);
1400
1401 if (r & IPW_INTR_RX_TRANSFER)
1402 ipw_rx_intr(sc);
1403
1404 if (r & IPW_INTR_TX_TRANSFER)
1405 ipw_tx_intr(sc);
1406
1407 /* re-enable interrupts */
1408 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1409 done:
1410 IPW_UNLOCK(sc);
1411 }
1412
1413 static void
ipw_dma_map_addr(void * arg,bus_dma_segment_t * segs,int nseg,int error)1414 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1415 {
1416 if (error != 0)
1417 return;
1418
1419 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
1420
1421 *(bus_addr_t *)arg = segs[0].ds_addr;
1422 }
1423
1424 static const char *
ipw_cmdname(int cmd)1425 ipw_cmdname(int cmd)
1426 {
1427 static const struct {
1428 int cmd;
1429 const char *name;
1430 } cmds[] = {
1431 { IPW_CMD_ADD_MULTICAST, "ADD_MULTICAST" },
1432 { IPW_CMD_BROADCAST_SCAN, "BROADCAST_SCAN" },
1433 { IPW_CMD_DISABLE, "DISABLE" },
1434 { IPW_CMD_DISABLE_PHY, "DISABLE_PHY" },
1435 { IPW_CMD_ENABLE, "ENABLE" },
1436 { IPW_CMD_PREPARE_POWER_DOWN, "PREPARE_POWER_DOWN" },
1437 { IPW_CMD_SET_BASIC_TX_RATES, "SET_BASIC_TX_RATES" },
1438 { IPW_CMD_SET_BEACON_INTERVAL, "SET_BEACON_INTERVAL" },
1439 { IPW_CMD_SET_CHANNEL, "SET_CHANNEL" },
1440 { IPW_CMD_SET_CONFIGURATION, "SET_CONFIGURATION" },
1441 { IPW_CMD_SET_DESIRED_BSSID, "SET_DESIRED_BSSID" },
1442 { IPW_CMD_SET_ESSID, "SET_ESSID" },
1443 { IPW_CMD_SET_FRAG_THRESHOLD, "SET_FRAG_THRESHOLD" },
1444 { IPW_CMD_SET_MAC_ADDRESS, "SET_MAC_ADDRESS" },
1445 { IPW_CMD_SET_MANDATORY_BSSID, "SET_MANDATORY_BSSID" },
1446 { IPW_CMD_SET_MODE, "SET_MODE" },
1447 { IPW_CMD_SET_MSDU_TX_RATES, "SET_MSDU_TX_RATES" },
1448 { IPW_CMD_SET_POWER_MODE, "SET_POWER_MODE" },
1449 { IPW_CMD_SET_RTS_THRESHOLD, "SET_RTS_THRESHOLD" },
1450 { IPW_CMD_SET_SCAN_OPTIONS, "SET_SCAN_OPTIONS" },
1451 { IPW_CMD_SET_SECURITY_INFO, "SET_SECURITY_INFO" },
1452 { IPW_CMD_SET_TX_POWER_INDEX, "SET_TX_POWER_INDEX" },
1453 { IPW_CMD_SET_TX_RATES, "SET_TX_RATES" },
1454 { IPW_CMD_SET_WEP_FLAGS, "SET_WEP_FLAGS" },
1455 { IPW_CMD_SET_WEP_KEY, "SET_WEP_KEY" },
1456 { IPW_CMD_SET_WEP_KEY_INDEX, "SET_WEP_KEY_INDEX" },
1457 { IPW_CMD_SET_WPA_IE, "SET_WPA_IE" },
1458
1459 };
1460 static char buf[12];
1461 int i;
1462
1463 for (i = 0; i < nitems(cmds); i++)
1464 if (cmds[i].cmd == cmd)
1465 return cmds[i].name;
1466 snprintf(buf, sizeof(buf), "%u", cmd);
1467 return buf;
1468 }
1469
1470 /*
1471 * Send a command to the firmware and wait for the acknowledgement.
1472 */
1473 static int
ipw_cmd(struct ipw_softc * sc,uint32_t type,void * data,uint32_t len)1474 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len)
1475 {
1476 struct ipw_soft_bd *sbd;
1477 bus_addr_t physaddr;
1478 int error;
1479
1480 IPW_LOCK_ASSERT(sc);
1481
1482 if (sc->flags & IPW_FLAG_BUSY) {
1483 device_printf(sc->sc_dev, "%s: %s not sent, busy\n",
1484 __func__, ipw_cmdname(type));
1485 return EAGAIN;
1486 }
1487 sc->flags |= IPW_FLAG_BUSY;
1488
1489 sbd = &sc->stbd_list[sc->txcur];
1490
1491 error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd,
1492 sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0);
1493 if (error != 0) {
1494 device_printf(sc->sc_dev, "could not map command DMA memory\n");
1495 sc->flags &= ~IPW_FLAG_BUSY;
1496 return error;
1497 }
1498
1499 sc->cmd.type = htole32(type);
1500 sc->cmd.subtype = 0;
1501 sc->cmd.len = htole32(len);
1502 sc->cmd.seq = 0;
1503 memcpy(sc->cmd.data, data, len);
1504
1505 sbd->type = IPW_SBD_TYPE_COMMAND;
1506 sbd->bd->physaddr = htole32(physaddr);
1507 sbd->bd->len = htole32(sizeof (struct ipw_cmd));
1508 sbd->bd->nfrag = 1;
1509 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND |
1510 IPW_BD_FLAG_TX_LAST_FRAGMENT;
1511
1512 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE);
1513 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1514
1515 #ifdef IPW_DEBUG
1516 if (ipw_debug >= 4) {
1517 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type,
1518 0, 0, len);
1519 /* Print the data buffer in the higher debug level */
1520 if (ipw_debug >= 9 && len > 0) {
1521 printf(" data: 0x");
1522 for (int i = 1; i <= len; i++)
1523 printf("%1D", (u_char *)data + len - i, "");
1524 }
1525 printf("\n");
1526 }
1527 #endif
1528
1529 /* kick firmware */
1530 sc->txfree--;
1531 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1532 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1533
1534 /* wait at most one second for command to complete */
1535 error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz);
1536 if (error != 0) {
1537 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n",
1538 __func__, ipw_cmdname(type), error);
1539 sc->flags &= ~IPW_FLAG_BUSY;
1540 return (error);
1541 }
1542 return (0);
1543 }
1544
1545 static int
ipw_tx_start(struct ipw_softc * sc,struct mbuf * m0,struct ieee80211_node * ni)1546 ipw_tx_start(struct ipw_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1547 {
1548 struct ieee80211com *ic = &sc->sc_ic;
1549 struct ieee80211vap *vap = ni->ni_vap;
1550 struct ieee80211_frame *wh;
1551 struct ipw_soft_bd *sbd;
1552 struct ipw_soft_hdr *shdr;
1553 struct ipw_soft_buf *sbuf;
1554 struct ieee80211_key *k;
1555 struct mbuf *mnew;
1556 bus_dma_segment_t segs[IPW_MAX_NSEG];
1557 bus_addr_t physaddr;
1558 int nsegs, error, i;
1559
1560 wh = mtod(m0, struct ieee80211_frame *);
1561
1562 ieee80211_output_seqno_assign(ni, -1, m0);
1563 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1564 k = ieee80211_crypto_encap(ni, m0);
1565 if (k == NULL) {
1566 m_freem(m0);
1567 return ENOBUFS;
1568 }
1569 /* packet header may have moved, reset our local pointer */
1570 wh = mtod(m0, struct ieee80211_frame *);
1571 }
1572
1573 if (ieee80211_radiotap_active_vap(vap)) {
1574 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap;
1575
1576 tap->wt_flags = 0;
1577
1578 ieee80211_radiotap_tx(vap, m0);
1579 }
1580
1581 shdr = SLIST_FIRST(&sc->free_shdr);
1582 sbuf = SLIST_FIRST(&sc->free_sbuf);
1583 KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool"));
1584
1585 shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND);
1586 shdr->hdr.subtype = 0;
1587 shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) ? 1 : 0;
1588 shdr->hdr.encrypt = 0;
1589 shdr->hdr.keyidx = 0;
1590 shdr->hdr.keysz = 0;
1591 shdr->hdr.fragmentsz = 0;
1592 IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2);
1593 if (ic->ic_opmode == IEEE80211_M_STA)
1594 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3);
1595 else
1596 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1);
1597
1598 /* trim IEEE802.11 header */
1599 m_adj(m0, sizeof (struct ieee80211_frame));
1600
1601 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs,
1602 &nsegs, 0);
1603 if (error != 0 && error != EFBIG) {
1604 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1605 error);
1606 m_freem(m0);
1607 return error;
1608 }
1609 if (error != 0) {
1610 mnew = m_defrag(m0, M_NOWAIT);
1611 if (mnew == NULL) {
1612 device_printf(sc->sc_dev,
1613 "could not defragment mbuf\n");
1614 m_freem(m0);
1615 return ENOBUFS;
1616 }
1617 m0 = mnew;
1618
1619 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0,
1620 segs, &nsegs, 0);
1621 if (error != 0) {
1622 device_printf(sc->sc_dev,
1623 "could not map mbuf (error %d)\n", error);
1624 m_freem(m0);
1625 return error;
1626 }
1627 }
1628
1629 error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr,
1630 sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0);
1631 if (error != 0) {
1632 device_printf(sc->sc_dev, "could not map header DMA memory\n");
1633 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1634 m_freem(m0);
1635 return error;
1636 }
1637
1638 SLIST_REMOVE_HEAD(&sc->free_sbuf, next);
1639 SLIST_REMOVE_HEAD(&sc->free_shdr, next);
1640
1641 sbd = &sc->stbd_list[sc->txcur];
1642 sbd->type = IPW_SBD_TYPE_HEADER;
1643 sbd->priv = shdr;
1644 sbd->bd->physaddr = htole32(physaddr);
1645 sbd->bd->len = htole32(sizeof (struct ipw_hdr));
1646 sbd->bd->nfrag = 1 + nsegs;
1647 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 |
1648 IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1649
1650 DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n",
1651 shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted,
1652 shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr,
1653 ":"));
1654
1655 sc->txfree--;
1656 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1657
1658 sbuf->m = m0;
1659 sbuf->ni = ni;
1660
1661 for (i = 0; i < nsegs; i++) {
1662 sbd = &sc->stbd_list[sc->txcur];
1663
1664 sbd->bd->physaddr = htole32(segs[i].ds_addr);
1665 sbd->bd->len = htole32(segs[i].ds_len);
1666 sbd->bd->nfrag = 0;
1667 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3;
1668 if (i == nsegs - 1) {
1669 sbd->type = IPW_SBD_TYPE_DATA;
1670 sbd->priv = sbuf;
1671 sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT;
1672 } else {
1673 sbd->type = IPW_SBD_TYPE_NOASSOC;
1674 sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1675 }
1676
1677 DPRINTFN(5, ("sending fragment (%d)\n", i));
1678
1679 sc->txfree--;
1680 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1681 }
1682
1683 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE);
1684 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE);
1685 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1686
1687 /* kick firmware */
1688 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1689
1690 return 0;
1691 }
1692
1693 static int
ipw_raw_xmit(struct ieee80211_node * ni,struct mbuf * m,const struct ieee80211_bpf_params * params)1694 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1695 const struct ieee80211_bpf_params *params)
1696 {
1697 /* no support; just discard */
1698 m_freem(m);
1699 ieee80211_free_node(ni);
1700 return 0;
1701 }
1702
1703 static int
ipw_transmit(struct ieee80211com * ic,struct mbuf * m)1704 ipw_transmit(struct ieee80211com *ic, struct mbuf *m)
1705 {
1706 struct ipw_softc *sc = ic->ic_softc;
1707 int error;
1708
1709 IPW_LOCK(sc);
1710 if ((sc->flags & IPW_FLAG_RUNNING) == 0) {
1711 IPW_UNLOCK(sc);
1712 return (ENXIO);
1713 }
1714 error = mbufq_enqueue(&sc->sc_snd, m);
1715 if (error) {
1716 IPW_UNLOCK(sc);
1717 return (error);
1718 }
1719 ipw_start(sc);
1720 IPW_UNLOCK(sc);
1721 return (0);
1722 }
1723
1724 static void
ipw_start(struct ipw_softc * sc)1725 ipw_start(struct ipw_softc *sc)
1726 {
1727 struct ieee80211_node *ni;
1728 struct mbuf *m;
1729
1730 IPW_LOCK_ASSERT(sc);
1731
1732 while (sc->txfree >= 1 + IPW_MAX_NSEG &&
1733 (m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
1734 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1735 if (ipw_tx_start(sc, m, ni) != 0) {
1736 if_inc_counter(ni->ni_vap->iv_ifp,
1737 IFCOUNTER_OERRORS, 1);
1738 ieee80211_free_node(ni);
1739 break;
1740 }
1741 /* start watchdog timer */
1742 sc->sc_tx_timer = 5;
1743 }
1744 }
1745
1746 static void
ipw_watchdog(void * arg)1747 ipw_watchdog(void *arg)
1748 {
1749 struct ipw_softc *sc = arg;
1750 struct ieee80211com *ic = &sc->sc_ic;
1751
1752 IPW_LOCK_ASSERT(sc);
1753
1754 if (sc->sc_tx_timer > 0) {
1755 if (--sc->sc_tx_timer == 0) {
1756 device_printf(sc->sc_dev, "device timeout\n");
1757 counter_u64_add(ic->ic_oerrors, 1);
1758 taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task);
1759 }
1760 }
1761 if (sc->sc_scan_timer > 0) {
1762 if (--sc->sc_scan_timer == 0) {
1763 DPRINTFN(3, ("Scan timeout\n"));
1764 /* End the scan */
1765 if (sc->flags & IPW_FLAG_SCANNING) {
1766 IPW_UNLOCK(sc);
1767 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps));
1768 IPW_LOCK(sc);
1769 sc->flags &= ~IPW_FLAG_SCANNING;
1770 }
1771 }
1772 }
1773 if (sc->flags & IPW_FLAG_RUNNING)
1774 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
1775 }
1776
1777 static void
ipw_parent(struct ieee80211com * ic)1778 ipw_parent(struct ieee80211com *ic)
1779 {
1780 struct ipw_softc *sc = ic->ic_softc;
1781 int startall = 0;
1782
1783 IPW_LOCK(sc);
1784 if (ic->ic_nrunning > 0) {
1785 if (!(sc->flags & IPW_FLAG_RUNNING)) {
1786 ipw_init_locked(sc);
1787 startall = 1;
1788 }
1789 } else if (sc->flags & IPW_FLAG_RUNNING)
1790 ipw_stop_locked(sc);
1791 IPW_UNLOCK(sc);
1792 if (startall)
1793 ieee80211_start_all(ic);
1794 }
1795
1796 static void
ipw_stop_master(struct ipw_softc * sc)1797 ipw_stop_master(struct ipw_softc *sc)
1798 {
1799 uint32_t tmp;
1800 int ntries;
1801
1802 /* disable interrupts */
1803 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1804
1805 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER);
1806 for (ntries = 0; ntries < 50; ntries++) {
1807 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED)
1808 break;
1809 DELAY(10);
1810 }
1811 if (ntries == 50)
1812 device_printf(sc->sc_dev, "timeout waiting for master\n");
1813
1814 tmp = CSR_READ_4(sc, IPW_CSR_RST);
1815 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET);
1816
1817 /* Clear all flags except the following */
1818 sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH;
1819 }
1820
1821 static int
ipw_reset(struct ipw_softc * sc)1822 ipw_reset(struct ipw_softc *sc)
1823 {
1824 uint32_t tmp;
1825 int ntries;
1826
1827 ipw_stop_master(sc);
1828
1829 /* move adapter to D0 state */
1830 tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1831 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1832
1833 /* wait for clock stabilization */
1834 for (ntries = 0; ntries < 1000; ntries++) {
1835 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY)
1836 break;
1837 DELAY(200);
1838 }
1839 if (ntries == 1000)
1840 return EIO;
1841
1842 tmp = CSR_READ_4(sc, IPW_CSR_RST);
1843 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET);
1844
1845 DELAY(10);
1846
1847 tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1848 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1849
1850 return 0;
1851 }
1852
1853 static int
ipw_waitfordisable(struct ipw_softc * sc,int waitfor)1854 ipw_waitfordisable(struct ipw_softc *sc, int waitfor)
1855 {
1856 int ms = hz < 1000 ? 1 : hz/10;
1857 int i, error;
1858
1859 for (i = 0; i < 100; i++) {
1860 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor)
1861 return 0;
1862 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms);
1863 if (error == 0 || error != EWOULDBLOCK)
1864 return 0;
1865 }
1866 DPRINTF(("%s: timeout waiting for %s\n",
1867 __func__, waitfor ? "disable" : "enable"));
1868 return ETIMEDOUT;
1869 }
1870
1871 static int
ipw_enable(struct ipw_softc * sc)1872 ipw_enable(struct ipw_softc *sc)
1873 {
1874 int error;
1875
1876 if ((sc->flags & IPW_FLAG_ENABLED) == 0) {
1877 DPRINTF(("Enable adapter\n"));
1878 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0);
1879 if (error != 0)
1880 return error;
1881 error = ipw_waitfordisable(sc, 0);
1882 if (error != 0)
1883 return error;
1884 sc->flags |= IPW_FLAG_ENABLED;
1885 }
1886 return 0;
1887 }
1888
1889 static int
ipw_disable(struct ipw_softc * sc)1890 ipw_disable(struct ipw_softc *sc)
1891 {
1892 int error;
1893
1894 if (sc->flags & IPW_FLAG_ENABLED) {
1895 DPRINTF(("Disable adapter\n"));
1896 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0);
1897 if (error != 0)
1898 return error;
1899 error = ipw_waitfordisable(sc, 1);
1900 if (error != 0)
1901 return error;
1902 sc->flags &= ~IPW_FLAG_ENABLED;
1903 }
1904 return 0;
1905 }
1906
1907 /*
1908 * Upload the microcode to the device.
1909 */
1910 static int
ipw_load_ucode(struct ipw_softc * sc,const char * uc,int size)1911 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size)
1912 {
1913 int ntries;
1914
1915 MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
1916 CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1917
1918 MEM_WRITE_2(sc, 0x220000, 0x0703);
1919 MEM_WRITE_2(sc, 0x220000, 0x0707);
1920
1921 MEM_WRITE_1(sc, 0x210014, 0x72);
1922 MEM_WRITE_1(sc, 0x210014, 0x72);
1923
1924 MEM_WRITE_1(sc, 0x210000, 0x40);
1925 MEM_WRITE_1(sc, 0x210000, 0x00);
1926 MEM_WRITE_1(sc, 0x210000, 0x40);
1927
1928 MEM_WRITE_MULTI_1(sc, 0x210010, uc, size);
1929
1930 MEM_WRITE_1(sc, 0x210000, 0x00);
1931 MEM_WRITE_1(sc, 0x210000, 0x00);
1932 MEM_WRITE_1(sc, 0x210000, 0x80);
1933
1934 MEM_WRITE_2(sc, 0x220000, 0x0703);
1935 MEM_WRITE_2(sc, 0x220000, 0x0707);
1936
1937 MEM_WRITE_1(sc, 0x210014, 0x72);
1938 MEM_WRITE_1(sc, 0x210014, 0x72);
1939
1940 MEM_WRITE_1(sc, 0x210000, 0x00);
1941 MEM_WRITE_1(sc, 0x210000, 0x80);
1942
1943 for (ntries = 0; ntries < 10; ntries++) {
1944 if (MEM_READ_1(sc, 0x210000) & 1)
1945 break;
1946 DELAY(10);
1947 }
1948 if (ntries == 10) {
1949 device_printf(sc->sc_dev,
1950 "timeout waiting for ucode to initialize\n");
1951 return EIO;
1952 }
1953
1954 MEM_WRITE_4(sc, 0x3000e0, 0);
1955
1956 return 0;
1957 }
1958
1959 /* set of macros to handle unaligned little endian data in firmware image */
1960 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
1961 #define GETLE16(p) ((p)[0] | (p)[1] << 8)
1962 static int
ipw_load_firmware(struct ipw_softc * sc,const char * fw,int size)1963 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size)
1964 {
1965 const uint8_t *p, *end;
1966 uint32_t tmp, dst;
1967 uint16_t len;
1968 int error;
1969
1970 p = fw;
1971 end = fw + size;
1972 while (p < end) {
1973 dst = GETLE32(p); p += 4;
1974 len = GETLE16(p); p += 2;
1975
1976 ipw_write_mem_1(sc, dst, p, len);
1977 p += len;
1978 }
1979
1980 CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK |
1981 IPW_IO_LED_OFF);
1982
1983 /* enable interrupts */
1984 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1985
1986 /* kick the firmware */
1987 CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1988
1989 tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1990 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY);
1991
1992 /* wait at most one second for firmware initialization to complete */
1993 if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) {
1994 device_printf(sc->sc_dev, "timeout waiting for firmware "
1995 "initialization to complete\n");
1996 return error;
1997 }
1998
1999 tmp = CSR_READ_4(sc, IPW_CSR_IO);
2000 CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK |
2001 IPW_IO_GPIO3_MASK);
2002
2003 return 0;
2004 }
2005
2006 static int
ipw_setwepkeys(struct ipw_softc * sc)2007 ipw_setwepkeys(struct ipw_softc *sc)
2008 {
2009 struct ieee80211com *ic = &sc->sc_ic;
2010 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2011 struct ipw_wep_key wepkey;
2012 struct ieee80211_key *wk;
2013 int error, i;
2014
2015 for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2016 wk = &vap->iv_nw_keys[i];
2017
2018 if (wk->wk_cipher == NULL ||
2019 wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP)
2020 continue;
2021
2022 wepkey.idx = i;
2023 wepkey.len = ieee80211_crypto_get_key_len(wk);
2024 memset(wepkey.key, 0, sizeof wepkey.key);
2025 memcpy(wepkey.key, ieee80211_crypto_get_key_data(wk),
2026 ieee80211_crypto_get_key_len(wk));
2027 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2028 wepkey.len));
2029 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey,
2030 sizeof wepkey);
2031 if (error != 0)
2032 return error;
2033 }
2034 return 0;
2035 }
2036
2037 static int
ipw_setwpaie(struct ipw_softc * sc,const void * ie,int ielen)2038 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen)
2039 {
2040 struct ipw_wpa_ie wpaie;
2041
2042 memset(&wpaie, 0, sizeof(wpaie));
2043 wpaie.len = htole32(ielen);
2044 /* XXX verify length */
2045 memcpy(&wpaie.ie, ie, ielen);
2046 DPRINTF(("Setting WPA IE\n"));
2047 return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie));
2048 }
2049
2050 static int
ipw_setbssid(struct ipw_softc * sc,uint8_t * bssid)2051 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid)
2052 {
2053 static const uint8_t zerobssid[IEEE80211_ADDR_LEN];
2054
2055 if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) {
2056 DPRINTF(("Setting mandatory BSSID to null\n"));
2057 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0);
2058 } else {
2059 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":"));
2060 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID,
2061 bssid, IEEE80211_ADDR_LEN);
2062 }
2063 }
2064
2065 static int
ipw_setssid(struct ipw_softc * sc,void * ssid,size_t ssidlen)2066 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen)
2067 {
2068 if (ssidlen == 0) {
2069 /*
2070 * A bug in the firmware breaks the ``don't associate''
2071 * bit in the scan options command. To compensate for
2072 * this install a bogus ssid when no ssid is specified
2073 * so the firmware won't try to associate.
2074 */
2075 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n"));
2076 return ipw_cmd(sc, IPW_CMD_SET_ESSID,
2077 "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27"
2078 "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31"
2079 "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b"
2080 "\x3c\x3d", IEEE80211_NWID_LEN);
2081 } else {
2082 #ifdef IPW_DEBUG
2083 if (ipw_debug > 0) {
2084 printf("Setting ESSID to ");
2085 ieee80211_print_essid(ssid, ssidlen);
2086 printf("\n");
2087 }
2088 #endif
2089 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen);
2090 }
2091 }
2092
2093 static int
ipw_setscanopts(struct ipw_softc * sc,uint32_t chanmask,uint32_t flags)2094 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags)
2095 {
2096 struct ipw_scan_options opts;
2097
2098 DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags));
2099 opts.channels = htole32(chanmask);
2100 opts.flags = htole32(flags);
2101 return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts));
2102 }
2103
2104 static int
ipw_scan(struct ipw_softc * sc)2105 ipw_scan(struct ipw_softc *sc)
2106 {
2107 uint32_t params;
2108 int error;
2109
2110 DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags));
2111
2112 if (sc->flags & IPW_FLAG_SCANNING)
2113 return (EBUSY);
2114 sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK;
2115
2116 /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */
2117 error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE);
2118 if (error != 0)
2119 goto done;
2120
2121 /*
2122 * Setup null/bogus ssid so firmware doesn't use any previous
2123 * ssid to try and associate. This is because the ``don't
2124 * associate'' option bit is broken (sigh).
2125 */
2126 error = ipw_setssid(sc, NULL, 0);
2127 if (error != 0)
2128 goto done;
2129
2130 /*
2131 * NB: the adapter may be disabled on association lost;
2132 * if so just re-enable it to kick off scanning.
2133 */
2134 DPRINTF(("Starting scan\n"));
2135 sc->sc_scan_timer = 3;
2136 if (sc->flags & IPW_FLAG_ENABLED) {
2137 params = 0; /* XXX? */
2138 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN,
2139 ¶ms, sizeof(params));
2140 } else
2141 error = ipw_enable(sc);
2142 done:
2143 if (error != 0) {
2144 DPRINTF(("Scan failed\n"));
2145 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK);
2146 }
2147 return (error);
2148 }
2149
2150 static int
ipw_setchannel(struct ipw_softc * sc,struct ieee80211_channel * chan)2151 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan)
2152 {
2153 struct ieee80211com *ic = &sc->sc_ic;
2154 uint32_t data;
2155 int error;
2156
2157 data = htole32(ieee80211_chan2ieee(ic, chan));
2158 DPRINTF(("Setting channel to %u\n", le32toh(data)));
2159 error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data);
2160 if (error == 0)
2161 ipw_setcurchan(sc, chan);
2162 return error;
2163 }
2164
2165 static void
ipw_assoc(struct ieee80211com * ic,struct ieee80211vap * vap)2166 ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2167 {
2168 struct ipw_softc *sc = ic->ic_softc;
2169 struct ieee80211_node *ni = vap->iv_bss;
2170 struct ipw_security security;
2171 uint32_t data;
2172 int error;
2173
2174 IPW_LOCK(sc);
2175 error = ipw_disable(sc);
2176 if (error != 0)
2177 goto done;
2178
2179 memset(&security, 0, sizeof security);
2180 security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ?
2181 IPW_AUTH_SHARED : IPW_AUTH_OPEN;
2182 security.ciphers = htole32(IPW_CIPHER_NONE);
2183 DPRINTF(("Setting authmode to %u\n", security.authmode));
2184 error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security,
2185 sizeof security);
2186 if (error != 0)
2187 goto done;
2188
2189 data = htole32(vap->iv_rtsthreshold);
2190 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2191 error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2192 if (error != 0)
2193 goto done;
2194
2195 data = htole32(vap->iv_fragthreshold);
2196 DPRINTF(("Setting frag threshold to %u\n", le32toh(data)));
2197 error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2198 if (error != 0)
2199 goto done;
2200
2201 if (vap->iv_flags & IEEE80211_F_PRIVACY) {
2202 error = ipw_setwepkeys(sc);
2203 if (error != 0)
2204 goto done;
2205
2206 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) {
2207 data = htole32(vap->iv_def_txkey);
2208 DPRINTF(("Setting wep tx key index to %u\n",
2209 le32toh(data)));
2210 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data,
2211 sizeof data);
2212 if (error != 0)
2213 goto done;
2214 }
2215 }
2216
2217 data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0);
2218 DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data)));
2219 error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data);
2220 if (error != 0)
2221 goto done;
2222
2223 error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen);
2224 if (error != 0)
2225 goto done;
2226
2227 error = ipw_setbssid(sc, ni->ni_bssid);
2228 if (error != 0)
2229 goto done;
2230
2231 if (vap->iv_appie_wpa != NULL) {
2232 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2233 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len);
2234 if (error != 0)
2235 goto done;
2236 }
2237 if (ic->ic_opmode == IEEE80211_M_IBSS) {
2238 error = ipw_setchannel(sc, ni->ni_chan);
2239 if (error != 0)
2240 goto done;
2241 }
2242
2243 /* lock scan to ap's channel and enable associate */
2244 error = ipw_setscanopts(sc,
2245 1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0);
2246 if (error != 0)
2247 goto done;
2248
2249 error = ipw_enable(sc); /* finally, enable adapter */
2250 if (error == 0)
2251 sc->flags |= IPW_FLAG_ASSOCIATING;
2252 done:
2253 IPW_UNLOCK(sc);
2254 }
2255
2256 static void
ipw_disassoc(struct ieee80211com * ic,struct ieee80211vap * vap)2257 ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2258 {
2259 struct ieee80211_node *ni = vap->iv_bss;
2260 struct ipw_softc *sc = ic->ic_softc;
2261
2262 IPW_LOCK(sc);
2263 DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":"));
2264 /*
2265 * NB: don't try to do this if ipw_stop_master has
2266 * shutdown the firmware and disabled interrupts.
2267 */
2268 if (sc->flags & IPW_FLAG_FW_INITED) {
2269 sc->flags &= ~IPW_FLAG_ASSOCIATED;
2270 /*
2271 * NB: firmware currently ignores bssid parameter, but
2272 * supply it in case this changes (follow linux driver).
2273 */
2274 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE,
2275 ni->ni_bssid, IEEE80211_ADDR_LEN);
2276 }
2277 IPW_UNLOCK(sc);
2278 }
2279
2280 /*
2281 * Handler for sc_init_task. This is a simple wrapper around ipw_init().
2282 * It is called on firmware panics or on watchdog timeouts.
2283 */
2284 static void
ipw_init_task(void * context,int pending)2285 ipw_init_task(void *context, int pending)
2286 {
2287 ipw_init(context);
2288 }
2289
2290 static void
ipw_init(void * priv)2291 ipw_init(void *priv)
2292 {
2293 struct ipw_softc *sc = priv;
2294 struct ieee80211com *ic = &sc->sc_ic;
2295
2296 IPW_LOCK(sc);
2297 ipw_init_locked(sc);
2298 IPW_UNLOCK(sc);
2299
2300 if (sc->flags & IPW_FLAG_RUNNING)
2301 ieee80211_start_all(ic); /* start all vap's */
2302 }
2303
2304 static void
ipw_init_locked(struct ipw_softc * sc)2305 ipw_init_locked(struct ipw_softc *sc)
2306 {
2307 struct ieee80211com *ic = &sc->sc_ic;
2308 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2309 const struct firmware *fp;
2310 const struct ipw_firmware_hdr *hdr;
2311 const char *fw;
2312
2313 IPW_LOCK_ASSERT(sc);
2314
2315 DPRINTF(("%s: state %s flags 0x%x\n", __func__,
2316 ieee80211_state_name[vap->iv_state], sc->flags));
2317
2318 /*
2319 * Avoid re-entrant calls. We need to release the mutex in ipw_init()
2320 * when loading the firmware and we don't want to be called during this
2321 * operation.
2322 */
2323 if (sc->flags & IPW_FLAG_INIT_LOCKED)
2324 return;
2325 sc->flags |= IPW_FLAG_INIT_LOCKED;
2326
2327 ipw_stop_locked(sc);
2328
2329 if (ipw_reset(sc) != 0) {
2330 device_printf(sc->sc_dev, "could not reset adapter\n");
2331 goto fail;
2332 }
2333
2334 if (sc->sc_firmware == NULL) {
2335 device_printf(sc->sc_dev, "no firmware\n");
2336 goto fail;
2337 }
2338 /* NB: consistency already checked on load */
2339 fp = sc->sc_firmware;
2340 hdr = (const struct ipw_firmware_hdr *)fp->data;
2341
2342 DPRINTF(("Loading firmware image '%s'\n", fp->name));
2343 fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz);
2344 if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) {
2345 device_printf(sc->sc_dev, "could not load microcode\n");
2346 goto fail;
2347 }
2348
2349 ipw_stop_master(sc);
2350
2351 /*
2352 * Setup tx, rx and status rings.
2353 */
2354 sc->txold = IPW_NTBD - 1;
2355 sc->txcur = 0;
2356 sc->txfree = IPW_NTBD - 2;
2357 sc->rxcur = IPW_NRBD - 1;
2358
2359 CSR_WRITE_4(sc, IPW_CSR_TX_BASE, sc->tbd_phys);
2360 CSR_WRITE_4(sc, IPW_CSR_TX_SIZE, IPW_NTBD);
2361 CSR_WRITE_4(sc, IPW_CSR_TX_READ, 0);
2362 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
2363
2364 CSR_WRITE_4(sc, IPW_CSR_RX_BASE, sc->rbd_phys);
2365 CSR_WRITE_4(sc, IPW_CSR_RX_SIZE, IPW_NRBD);
2366 CSR_WRITE_4(sc, IPW_CSR_RX_READ, 0);
2367 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
2368
2369 CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys);
2370
2371 fw = (const char *)fp->data + sizeof *hdr;
2372 if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) {
2373 device_printf(sc->sc_dev, "could not load firmware\n");
2374 goto fail;
2375 }
2376
2377 sc->flags |= IPW_FLAG_FW_INITED;
2378
2379 /* retrieve information tables base addresses */
2380 sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE);
2381 sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE);
2382
2383 ipw_write_table1(sc, IPW_INFO_LOCK, 0);
2384
2385 if (ipw_config(sc) != 0) {
2386 device_printf(sc->sc_dev, "device configuration failed\n");
2387 goto fail;
2388 }
2389
2390 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
2391 sc->flags |= IPW_FLAG_RUNNING;
2392 sc->flags &= ~IPW_FLAG_INIT_LOCKED;
2393 return;
2394
2395 fail:
2396 ipw_stop_locked(sc);
2397 sc->flags &= ~IPW_FLAG_INIT_LOCKED;
2398 }
2399
2400 static int
ipw_config(struct ipw_softc * sc)2401 ipw_config(struct ipw_softc *sc)
2402 {
2403 struct ieee80211com *ic = &sc->sc_ic;
2404 struct ipw_configuration config;
2405 uint32_t data;
2406 int error;
2407
2408 error = ipw_disable(sc);
2409 if (error != 0)
2410 return error;
2411
2412 switch (ic->ic_opmode) {
2413 case IEEE80211_M_STA:
2414 case IEEE80211_M_HOSTAP:
2415 case IEEE80211_M_WDS: /* XXX */
2416 data = htole32(IPW_MODE_BSS);
2417 break;
2418 case IEEE80211_M_IBSS:
2419 case IEEE80211_M_AHDEMO:
2420 data = htole32(IPW_MODE_IBSS);
2421 break;
2422 case IEEE80211_M_MONITOR:
2423 data = htole32(IPW_MODE_MONITOR);
2424 break;
2425 default:
2426 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
2427 return EINVAL;
2428 }
2429 DPRINTF(("Setting mode to %u\n", le32toh(data)));
2430 error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data);
2431 if (error != 0)
2432 return error;
2433
2434 if (ic->ic_opmode == IEEE80211_M_IBSS ||
2435 ic->ic_opmode == IEEE80211_M_MONITOR) {
2436 error = ipw_setchannel(sc, ic->ic_curchan);
2437 if (error != 0)
2438 return error;
2439 }
2440
2441 if (ic->ic_opmode == IEEE80211_M_MONITOR)
2442 return ipw_enable(sc);
2443
2444 config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK |
2445 IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE);
2446 if (ic->ic_opmode == IEEE80211_M_IBSS)
2447 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START);
2448 if (ic->ic_promisc > 0)
2449 config.flags |= htole32(IPW_CFG_PROMISCUOUS);
2450 config.bss_chan = htole32(0x3fff); /* channels 1-14 */
2451 config.ibss_chan = htole32(0x7ff); /* channels 1-11 */
2452 DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags)));
2453 error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config);
2454 if (error != 0)
2455 return error;
2456
2457 data = htole32(0xf); /* 1, 2, 5.5, 11 */
2458 DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data)));
2459 error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data);
2460 if (error != 0)
2461 return error;
2462
2463 /* Use the same rate set */
2464 DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data)));
2465 error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data);
2466 if (error != 0)
2467 return error;
2468
2469 /* Use the same rate set */
2470 DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data)));
2471 error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data);
2472 if (error != 0)
2473 return error;
2474
2475 data = htole32(IPW_POWER_MODE_CAM);
2476 DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2477 error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data);
2478 if (error != 0)
2479 return error;
2480
2481 if (ic->ic_opmode == IEEE80211_M_IBSS) {
2482 data = htole32(32); /* default value */
2483 DPRINTF(("Setting tx power index to %u\n", le32toh(data)));
2484 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data,
2485 sizeof data);
2486 if (error != 0)
2487 return error;
2488 }
2489
2490 return 0;
2491 }
2492
2493 static void
ipw_stop(void * priv)2494 ipw_stop(void *priv)
2495 {
2496 struct ipw_softc *sc = priv;
2497
2498 IPW_LOCK(sc);
2499 ipw_stop_locked(sc);
2500 IPW_UNLOCK(sc);
2501 }
2502
2503 static void
ipw_stop_locked(struct ipw_softc * sc)2504 ipw_stop_locked(struct ipw_softc *sc)
2505 {
2506 int i;
2507
2508 IPW_LOCK_ASSERT(sc);
2509
2510 callout_stop(&sc->sc_wdtimer);
2511 ipw_stop_master(sc);
2512
2513 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET);
2514
2515 /*
2516 * Release tx buffers.
2517 */
2518 for (i = 0; i < IPW_NTBD; i++)
2519 ipw_release_sbd(sc, &sc->stbd_list[i]);
2520
2521 sc->sc_tx_timer = 0;
2522 sc->flags &= ~IPW_FLAG_RUNNING;
2523 }
2524
2525 static int
ipw_sysctl_stats(SYSCTL_HANDLER_ARGS)2526 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS)
2527 {
2528 struct ipw_softc *sc = arg1;
2529 uint32_t i, size, buf[256];
2530
2531 memset(buf, 0, sizeof buf);
2532
2533 if (!(sc->flags & IPW_FLAG_FW_INITED))
2534 return SYSCTL_OUT(req, buf, sizeof buf);
2535
2536 CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base);
2537
2538 size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256);
2539 for (i = 1; i < size; i++)
2540 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA));
2541
2542 return SYSCTL_OUT(req, buf, size);
2543 }
2544
2545 static int
ipw_sysctl_radio(SYSCTL_HANDLER_ARGS)2546 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS)
2547 {
2548 struct ipw_softc *sc = arg1;
2549 int val;
2550
2551 val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) &&
2552 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED));
2553
2554 return SYSCTL_OUT(req, &val, sizeof val);
2555 }
2556
2557 static uint32_t
ipw_read_table1(struct ipw_softc * sc,uint32_t off)2558 ipw_read_table1(struct ipw_softc *sc, uint32_t off)
2559 {
2560 return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off));
2561 }
2562
2563 static void
ipw_write_table1(struct ipw_softc * sc,uint32_t off,uint32_t info)2564 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info)
2565 {
2566 MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info);
2567 }
2568
2569 #if 0
2570 static int
2571 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len)
2572 {
2573 uint32_t addr, info;
2574 uint16_t count, size;
2575 uint32_t total;
2576
2577 /* addr[4] + count[2] + size[2] */
2578 addr = MEM_READ_4(sc, sc->table2_base + off);
2579 info = MEM_READ_4(sc, sc->table2_base + off + 4);
2580
2581 count = info >> 16;
2582 size = info & 0xffff;
2583 total = count * size;
2584
2585 if (total > *len) {
2586 *len = total;
2587 return EINVAL;
2588 }
2589
2590 *len = total;
2591 ipw_read_mem_1(sc, addr, buf, total);
2592
2593 return 0;
2594 }
2595
2596 static void
2597 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap,
2598 bus_size_t count)
2599 {
2600 for (; count > 0; offset++, datap++, count--) {
2601 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2602 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3));
2603 }
2604 }
2605 #endif
2606
2607 static void
ipw_write_mem_1(struct ipw_softc * sc,bus_size_t offset,const uint8_t * datap,bus_size_t count)2608 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap,
2609 bus_size_t count)
2610 {
2611 for (; count > 0; offset++, datap++, count--) {
2612 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2613 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap);
2614 }
2615 }
2616
2617 static void
ipw_scan_start(struct ieee80211com * ic)2618 ipw_scan_start(struct ieee80211com *ic)
2619 {
2620 struct ipw_softc *sc = ic->ic_softc;
2621
2622 IPW_LOCK(sc);
2623 ipw_scan(sc);
2624 IPW_UNLOCK(sc);
2625 }
2626
2627 static void
ipw_getradiocaps(struct ieee80211com * ic,int maxchans,int * nchans,struct ieee80211_channel chans[])2628 ipw_getradiocaps(struct ieee80211com *ic,
2629 int maxchans, int *nchans, struct ieee80211_channel chans[])
2630 {
2631 struct ipw_softc *sc = ic->ic_softc;
2632 uint8_t bands[IEEE80211_MODE_BYTES];
2633 int i;
2634
2635 memset(bands, 0, sizeof(bands));
2636 setbit(bands, IEEE80211_MODE_11B);
2637
2638 for (i = 1; i < 16; i++) {
2639 if (sc->chanmask & (1 << i)) {
2640 ieee80211_add_channel(chans, maxchans, nchans,
2641 i, 0, 0, 0, bands);
2642 }
2643 }
2644
2645 }
2646
2647 static void
ipw_set_channel(struct ieee80211com * ic)2648 ipw_set_channel(struct ieee80211com *ic)
2649 {
2650 struct ipw_softc *sc = ic->ic_softc;
2651
2652 IPW_LOCK(sc);
2653 if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2654 ipw_disable(sc);
2655 ipw_setchannel(sc, ic->ic_curchan);
2656 ipw_enable(sc);
2657 }
2658 IPW_UNLOCK(sc);
2659 }
2660
2661 static void
ipw_scan_curchan(struct ieee80211_scan_state * ss,unsigned long maxdwell)2662 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
2663 {
2664 /* NB: all channels are scanned at once */
2665 }
2666
2667 static void
ipw_scan_mindwell(struct ieee80211_scan_state * ss)2668 ipw_scan_mindwell(struct ieee80211_scan_state *ss)
2669 {
2670 /* NB: don't try to abort scan; wait for firmware to finish */
2671 }
2672
2673 static void
ipw_scan_end(struct ieee80211com * ic)2674 ipw_scan_end(struct ieee80211com *ic)
2675 {
2676 struct ipw_softc *sc = ic->ic_softc;
2677
2678 IPW_LOCK(sc);
2679 sc->flags &= ~IPW_FLAG_SCANNING;
2680 IPW_UNLOCK(sc);
2681 }
2682