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Release serializer around firmware_load_image() to avoid possible dead
[dfdiff.git] / sys / dev / netif / acx / if_acx.c
blobc4c0a6f3c0b73b9c5b574afa986b27e266a0c924
1 /*
2 * Copyright (c) 2006 The DragonFly Project. All rights reserved.
3 *
4 * This code is derived from software contributed to The DragonFly Project
5 * by Sepherosa Ziehau <sepherosa@gmail.com>
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 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * $DragonFly: src/sys/dev/netif/acx/if_acx.c,v 1.26 2008/02/14 12:53:52 sephe Exp $
35 */
36
37 /*
38 * Copyright (c) 2003-2004 wlan.kewl.org Project
39 * All rights reserved.
40 *
41 * $Id: LICENSE,v 1.1.1.1 2004/07/01 12:20:39 darron Exp $
42 *
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
45 * are met:
46 *
47 * 1. Redistributions of source code must retain the above copyright
48 * notice, this list of conditions and the following disclaimer.
49 *
50 * 2. Redistributions in binary form must reproduce the above copyright
51 * notice, this list of conditions and the following disclaimer in the
52 * documentation and/or other materials provided with the distribution.
53 *
54 * 3. All advertising materials mentioning features or use of this software
55 * must display the following acknowledgement:
56 *
57 * This product includes software developed by the wlan.kewl.org Project.
58 *
59 * 4. Neither the name of the wlan.kewl.org Project nor the names of its
60 * contributors may be used to endorse or promote products derived from
61 * this software without specific prior written permission.
62 *
63 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
64 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
65 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
66 * THE wlan.kewl.org Project BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
67 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
68 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
69 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
70 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
71 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
72 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
73 */
74
75 #include <sys/param.h>
76 #include <sys/endian.h>
77 #include <sys/kernel.h>
78 #include <sys/bus.h>
79 #include <sys/firmware.h>
80 #include <sys/malloc.h>
81 #include <sys/proc.h>
82 #include <sys/rman.h>
83 #include <sys/serialize.h>
84 #include <sys/socket.h>
85 #include <sys/sockio.h>
86 #include <sys/sysctl.h>
87
88 #include <net/ethernet.h>
89 #include <net/if.h>
90 #include <net/bpf.h>
91 #include <net/if_arp.h>
92 #include <net/if_dl.h>
93 #include <net/if_media.h>
94 #include <net/ifq_var.h>
95
96 #include <netproto/802_11/ieee80211_var.h>
97 #include <netproto/802_11/ieee80211_radiotap.h>
98 #include <netproto/802_11/wlan_ratectl/amrr/ieee80211_amrr_param.h>
99 #include <netproto/802_11/wlan_ratectl/onoe/ieee80211_onoe_param.h>
100
101 #include <bus/pci/pcireg.h>
102 #include <bus/pci/pcivar.h>
103 #include <bus/pci/pcidevs.h>
104
105 #define ACX_DEBUG
106
107 #include <dev/netif/acx/if_acxreg.h>
108 #include <dev/netif/acx/if_acxvar.h>
109 #include <dev/netif/acx/acxcmd.h>
110
111 static int acx_probe(device_t);
112 static int acx_attach(device_t);
113 static int acx_detach(device_t);
114 static int acx_shutdown(device_t);
115
116 static void acx_init(void *);
117 static void acx_start(struct ifnet *);
118 static int acx_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
119 static void acx_watchdog(struct ifnet *);
120
121 static void acx_intr(void *);
122 static void acx_txeof(struct acx_softc *);
123 static void acx_txerr(struct acx_softc *, uint8_t);
124 static void acx_rxeof(struct acx_softc *);
125 static void acx_disable_intr(struct acx_softc *);
126 static void acx_enable_intr(struct acx_softc *);
127
128 static int acx_reset(struct acx_softc *);
129 static int acx_stop(struct acx_softc *);
130 static void acx_init_info_reg(struct acx_softc *);
131 static int acx_config(struct acx_softc *);
132 static int acx_read_config(struct acx_softc *, struct acx_config *);
133 static int acx_write_config(struct acx_softc *, struct acx_config *);
134 static int acx_rx_config(struct acx_softc *, int);
135 static int acx_set_crypt_keys(struct acx_softc *);
136
137 static int acx_dma_alloc(struct acx_softc *);
138 static void acx_dma_free(struct acx_softc *);
139 static int acx_init_tx_ring(struct acx_softc *);
140 static int acx_init_rx_ring(struct acx_softc *);
141 static int acx_newbuf(struct acx_softc *, struct acx_rxbuf *, int);
142 static int acx_encap(struct acx_softc *, struct acx_txbuf *,
143 struct mbuf *, struct ieee80211_node *);
144
145 static int acx_set_null_tmplt(struct acx_softc *);
146 static int acx_set_probe_req_tmplt(struct acx_softc *, const char *, int);
147 static int acx_set_probe_resp_tmplt(struct acx_softc *,
148 struct ieee80211_node *);
149 static int acx_set_beacon_tmplt(struct acx_softc *,
150 struct ieee80211_node *);
151
152 static int acx_read_eeprom(struct acx_softc *, uint32_t, uint8_t *);
153 static int acx_read_phyreg(struct acx_softc *, uint32_t, uint8_t *);
154
155 static int acx_alloc_firmware(struct acx_softc *);
156 static void acx_free_firmware(struct acx_softc *);
157 static int acx_setup_firmware(struct acx_softc *, struct fw_image *,
158 const uint8_t **, int *);
159 static int acx_load_firmware(struct acx_softc *, uint32_t,
160 const uint8_t *, int);
161 static int acx_load_radio_firmware(struct acx_softc *, const uint8_t *,
162 uint32_t);
163 static int acx_load_base_firmware(struct acx_softc *, const uint8_t *,
164 uint32_t);
165
166 static void acx_next_scan(void *);
167 static int acx_set_chan(struct acx_softc *, struct ieee80211_channel *);
168
169 static int acx_media_change(struct ifnet *);
170 static int acx_newstate(struct ieee80211com *, enum ieee80211_state, int);
171
172 static int acx_sysctl_msdu_lifetime(SYSCTL_HANDLER_ARGS);
173 static int acx_sysctl_free_firmware(SYSCTL_HANDLER_ARGS);
174
175 const struct ieee80211_rateset acx_rates_11b =
176 { 5, { 2, 4, 11, 22, 44 } };
177 const struct ieee80211_rateset acx_rates_11g =
178 { 13, { 2, 4, 11, 22, 44, 12, 18, 24, 36, 48, 72, 96, 108 } };
179
180 static const struct acx_device {
181 uint16_t vid;
182 uint16_t did;
183 void (*set_param)(device_t);
184 const char *desc;
185 } acx_devices[] = {
186 { PCI_VENDOR_TI, PCI_PRODUCT_TI_ACX100A, acx100_set_param,
187 "Texas Instruments TNETW1100A Wireless Adapter" },
188 { PCI_VENDOR_TI, PCI_PRODUCT_TI_ACX100B, acx100_set_param,
189 "Texas Instruments TNETW1100B Wireless Adapter" },
190 { PCI_VENDOR_TI, PCI_PRODUCT_TI_ACX111, acx111_set_param,
191 "Texas Instruments TNETW1130 Wireless Adapter" },
192 { 0, 0, NULL, NULL }
193 };
194
195 static device_method_t acx_methods[] = {
196 DEVMETHOD(device_probe, acx_probe),
197 DEVMETHOD(device_attach, acx_attach),
198 DEVMETHOD(device_detach, acx_detach),
199 DEVMETHOD(device_shutdown, acx_shutdown),
200 #if 0
201 DEVMETHOD(device_suspend, acx_suspend),
202 DEVMETHOD(device_resume, acx_resume),
203 #endif
204 { 0, 0 }
205 };
206
207 static driver_t acx_driver = {
208 "acx",
209 acx_methods,
210 sizeof(struct acx_softc)
211 };
212
213 static devclass_t acx_devclass;
214
215 DRIVER_MODULE(acx, pci, acx_driver, acx_devclass, 0, 0);
216 DRIVER_MODULE(acx, cardbus, acx_driver, acx_devclass, 0, 0);
217
218 MODULE_DEPEND(acx, wlan, 1, 1, 1);
219 MODULE_DEPEND(acx, wlan_ratectl_onoe, 1, 1, 1);
220 MODULE_DEPEND(acx, wlan_ratectl_amrr, 1, 1, 1);
221 MODULE_DEPEND(acx, pci, 1, 1, 1);
222 MODULE_DEPEND(acx, cardbus, 1, 1, 1);
223
224 static __inline int
225 acx_get_rssi(struct acx_softc *sc, uint8_t raw)
226 {
227 int rssi;
228
229 rssi = ((sc->chip_rssi_corr / 2) + (raw * 5)) / sc->chip_rssi_corr;
230 return rssi > 100 ? 100 : rssi;
231 }
232
233 static int
234 acx_probe(device_t dev)
235 {
236 const struct acx_device *a;
237 uint16_t did, vid;
238
239 vid = pci_get_vendor(dev);
240 did = pci_get_device(dev);
241 for (a = acx_devices; a->desc != NULL; ++a) {
242 if (vid == a->vid && did == a->did) {
243 a->set_param(dev);
244 device_set_desc(dev, a->desc);
245 return 0;
246 }
247 }
248 return ENXIO;
249 }
250
251 static int
252 acx_attach(device_t dev)
253 {
254 struct acx_softc *sc;
255 struct ifnet *ifp;
256 struct ieee80211com *ic;
257 int i, error;
258
259 sc = device_get_softc(dev);
260 ic = &sc->sc_ic;
261 ifp = &ic->ic_if;
262
263 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
264
265 #ifndef BURN_BRIDGES
266 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
267 uint32_t mem1, mem2, irq;
268
269 mem1 = pci_read_config(dev, sc->chip_mem1_rid, 4);
270 mem2 = pci_read_config(dev, sc->chip_mem2_rid, 4);
271 irq = pci_read_config(dev, PCIR_INTLINE, 4);
272
273 device_printf(dev, "chip is in D%d power mode "
274 "-- setting to D0\n", pci_get_powerstate(dev));
275
276 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
277
278 pci_write_config(dev, sc->chip_mem1_rid, mem1, 4);
279 pci_write_config(dev, sc->chip_mem2_rid, mem2, 4);
280 pci_write_config(dev, PCIR_INTLINE, irq, 4);
281 }
282 #endif /* !BURN_BRIDGE */
283
284 /* Enable bus mastering */
285 pci_enable_busmaster(dev);
286
287 /* Allocate IO memory 1 */
288 sc->sc_mem1_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
289 &sc->chip_mem1_rid,
290 RF_ACTIVE);
291 if (sc->sc_mem1_res == NULL) {
292 error = ENXIO;
293 device_printf(dev, "can't allocate IO mem1\n");
294 goto fail;
295 }
296 sc->sc_mem1_bt = rman_get_bustag(sc->sc_mem1_res);
297 sc->sc_mem1_bh = rman_get_bushandle(sc->sc_mem1_res);
298
299 /* Allocate IO memory 2 */
300 sc->sc_mem2_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
301 &sc->chip_mem2_rid,
302 RF_ACTIVE);
303 if (sc->sc_mem2_res == NULL) {
304 error = ENXIO;
305 device_printf(dev, "can't allocate IO mem2\n");
306 goto fail;
307 }
308 sc->sc_mem2_bt = rman_get_bustag(sc->sc_mem2_res);
309 sc->sc_mem2_bh = rman_get_bushandle(sc->sc_mem2_res);
310
311 /* Allocate irq */
312 sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
313 &sc->sc_irq_rid,
314 RF_SHAREABLE | RF_ACTIVE);
315 if (sc->sc_irq_res == NULL) {
316 error = ENXIO;
317 device_printf(dev, "can't allocate intr\n");
318 goto fail;
319 }
320
321 /* Initilize channel scanning timer */
322 callout_init(&sc->sc_scan_timer);
323
324 /* Allocate busdma stuffs */
325 error = acx_dma_alloc(sc);
326 if (error)
327 goto fail;
328
329 /* Reset Hardware */
330 error = acx_reset(sc);
331 if (error)
332 goto fail;
333
334 /* Disable interrupts before firmware is loaded */
335 acx_disable_intr(sc);
336
337 /* Get radio type and form factor */
338 #define EEINFO_RETRY_MAX 50
339 for (i = 0; i < EEINFO_RETRY_MAX; ++i) {
340 uint16_t ee_info;
341
342 ee_info = CSR_READ_2(sc, ACXREG_EEPROM_INFO);
343 if (ACX_EEINFO_HAS_RADIO_TYPE(ee_info)) {
344 sc->sc_form_factor = ACX_EEINFO_FORM_FACTOR(ee_info);
345 sc->sc_radio_type = ACX_EEINFO_RADIO_TYPE(ee_info);
346 break;
347 }
348 DELAY(10000);
349 }
350 if (i == EEINFO_RETRY_MAX) {
351 error = ENXIO;
352 goto fail;
353 }
354 #undef EEINFO_RETRY_MAX
355
356 DPRINTF((&sc->sc_ic.ic_if, "radio type %02x\n", sc->sc_radio_type));
357
358 #ifdef DUMP_EEPROM
359 for (i = 0; i < 0x40; ++i) {
360 uint8_t val;
361
362 error = acx_read_eeprom(sc, i, &val);
363 if (i % 10 == 0)
364 kprintf("\n");
365 kprintf("%02x ", val);
366 }
367 kprintf("\n");
368 #endif /* DUMP_EEPROM */
369
370 /* Get EEPROM version */
371 error = acx_read_eeprom(sc, ACX_EE_VERSION_OFS, &sc->sc_eeprom_ver);
372 if (error)
373 goto fail;
374 DPRINTF((&sc->sc_ic.ic_if, "EEPROM version %u\n", sc->sc_eeprom_ver));
375
376 /*
377 * Initialize device sysctl before ieee80211_ifattach()
378 */
379 sc->sc_long_retry_limit = 4;
380 sc->sc_msdu_lifetime = 4096;
381 sc->sc_scan_dwell = 200; /* 200 milliseconds */
382
383 sysctl_ctx_init(&sc->sc_sysctl_ctx);
384 sc->sc_sysctl_tree = SYSCTL_ADD_NODE(&sc->sc_sysctl_ctx,
385 SYSCTL_STATIC_CHILDREN(_hw),
386 OID_AUTO,
387 device_get_nameunit(dev),
388 CTLFLAG_RD, 0, "");
389 if (sc->sc_sysctl_tree == NULL) {
390 device_printf(dev, "can't add sysctl node\n");
391 error = ENXIO;
392 goto fail;
393 }
394 SYSCTL_ADD_PROC(&sc->sc_sysctl_ctx,
395 SYSCTL_CHILDREN(sc->sc_sysctl_tree),
396 OID_AUTO, "msdu_lifetime",
397 CTLTYPE_INT | CTLFLAG_RW,
398 sc, 0, acx_sysctl_msdu_lifetime, "I",
399 "MSDU life time");
400 SYSCTL_ADD_INT(&sc->sc_sysctl_ctx,
401 SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
402 "long_retry_limit", CTLFLAG_RW,
403 &sc->sc_long_retry_limit, 0, "Long retry limit");
404 SYSCTL_ADD_INT(&sc->sc_sysctl_ctx,
405 SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
406 "scan_dwell", CTLFLAG_RW,
407 &sc->sc_scan_dwell, 0, "Scan channel dwell time (ms)");
408
409 /*
410 * Nodes for firmware operation
411 */
412 SYSCTL_ADD_INT(&sc->sc_sysctl_ctx,
413 SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
414 "combined_radio_fw", CTLFLAG_RW,
415 &sc->sc_firmware.combined_radio_fw, 0,
416 "Radio and base firmwares are combined");
417 SYSCTL_ADD_PROC(&sc->sc_sysctl_ctx,
418 SYSCTL_CHILDREN(sc->sc_sysctl_tree),
419 OID_AUTO, "free_fw",
420 CTLTYPE_INT | CTLFLAG_RW,
421 sc, 0, acx_sysctl_free_firmware, "I",
422 "Free firmware");
423
424 /*
425 * Nodes for statistics
426 */
427 SYSCTL_ADD_UQUAD(&sc->sc_sysctl_ctx,
428 SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
429 "frag_error", CTLFLAG_RW, &sc->sc_stats.err_oth_frag,
430 0, "Fragment errors");
431 SYSCTL_ADD_UQUAD(&sc->sc_sysctl_ctx,
432 SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
433 "tx_abort", CTLFLAG_RW, &sc->sc_stats.err_abort,
434 0, "TX abortions");
435 SYSCTL_ADD_UQUAD(&sc->sc_sysctl_ctx,
436 SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
437 "tx_invalid", CTLFLAG_RW, &sc->sc_stats.err_param,
438 0, "Invalid TX param in TX descriptor");
439 SYSCTL_ADD_UQUAD(&sc->sc_sysctl_ctx,
440 SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
441 "no_wepkey", CTLFLAG_RW, &sc->sc_stats.err_no_wepkey,
442 0, "No WEP key exists");
443 SYSCTL_ADD_UQUAD(&sc->sc_sysctl_ctx,
444 SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
445 "msdu_timeout", CTLFLAG_RW,
446 &sc->sc_stats.err_msdu_timeout,
447 0, "MSDU timeouts");
448 SYSCTL_ADD_UQUAD(&sc->sc_sysctl_ctx,
449 SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
450 "ex_txretry", CTLFLAG_RW, &sc->sc_stats.err_ex_retry,
451 0, "Excessive TX retries");
452 SYSCTL_ADD_UQUAD(&sc->sc_sysctl_ctx,
453 SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
454 "buf_oflow", CTLFLAG_RW, &sc->sc_stats.err_buf_oflow,
455 0, "Buffer overflows");
456 SYSCTL_ADD_UQUAD(&sc->sc_sysctl_ctx,
457 SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
458 "dma_error", CTLFLAG_RW, &sc->sc_stats.err_dma,
459 0, "DMA errors");
460 SYSCTL_ADD_UQUAD(&sc->sc_sysctl_ctx,
461 SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
462 "unkn_error", CTLFLAG_RW, &sc->sc_stats.err_unkn,
463 0, "Unknown errors");
464
465 ifp->if_softc = sc;
466 ifp->if_init = acx_init;
467 ifp->if_ioctl = acx_ioctl;
468 ifp->if_start = acx_start;
469 ifp->if_watchdog = acx_watchdog;
470 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST;
471 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
472 ifq_set_ready(&ifp->if_snd);
473
474 /* Set channels */
475 for (i = 1; i <= 14; ++i) {
476 ic->ic_channels[i].ic_freq =
477 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
478 ic->ic_channels[i].ic_flags = sc->chip_chan_flags;
479 }
480
481 ic->ic_opmode = IEEE80211_M_STA;
482 ic->ic_state = IEEE80211_S_INIT;
483
484 /*
485 * NOTE: Don't overwrite ic_caps set by chip specific code
486 */
487 ic->ic_caps |= IEEE80211_C_WEP | /* WEP */
488 IEEE80211_C_HOSTAP | /* HostAP mode */
489 IEEE80211_C_MONITOR | /* Monitor mode */
490 IEEE80211_C_IBSS | /* IBSS modes */
491 IEEE80211_C_SHPREAMBLE; /* Short preamble */
492 ic->ic_caps_ext = IEEE80211_CEXT_PBCC; /* PBCC modulation */
493
494 /* Get station id */
495 for (i = 0; i < IEEE80211_ADDR_LEN; ++i) {
496 error = acx_read_eeprom(sc, sc->chip_ee_eaddr_ofs - i,
497 &ic->ic_myaddr[i]);
498 }
499
500 ieee80211_ifattach(ic);
501
502 /* Enable software beacon missing */
503 ic->ic_flags_ext |= IEEE80211_FEXT_SWBMISS;
504
505 /* Override newstate */
506 sc->sc_newstate = ic->ic_newstate;
507 ic->ic_newstate = acx_newstate;
508
509 ieee80211_media_init(ic, acx_media_change, ieee80211_media_status);
510
511 /*
512 * Radio tap attaching
513 */
514 bpfattach_dlt(ifp, DLT_IEEE802_11_RADIO,
515 sizeof(struct ieee80211_frame) + sizeof(sc->sc_tx_th),
516 &sc->sc_drvbpf);
517
518 sc->sc_tx_th_len = roundup(sizeof(sc->sc_tx_th), sizeof(uint32_t));
519 sc->sc_tx_th.wt_ihdr.it_len = htole16(sc->sc_tx_th_len);
520 sc->sc_tx_th.wt_ihdr.it_present = htole32(ACX_TX_RADIOTAP_PRESENT);
521
522 sc->sc_rx_th_len = roundup(sizeof(sc->sc_rx_th), sizeof(uint32_t));
523 sc->sc_rx_th.wr_ihdr.it_len = htole16(sc->sc_rx_th_len);
524 sc->sc_rx_th.wr_ihdr.it_present = htole32(ACX_RX_RADIOTAP_PRESENT);
525
526 error = bus_setup_intr(dev, sc->sc_irq_res, INTR_MPSAFE, acx_intr, sc,
527 &sc->sc_irq_handle, ifp->if_serializer);
528 if (error) {
529 device_printf(dev, "can't set up interrupt\n");
530 bpfdetach(ifp);
531 ieee80211_ifdetach(ic);
532 goto fail;
533 }
534
535 if (bootverbose)
536 ieee80211_announce(ic);
537
538 return 0;
539 fail:
540 acx_detach(dev);
541 return error;
542 }
543
544 static int
545 acx_detach(device_t dev)
546 {
547 struct acx_softc *sc = device_get_softc(dev);
548
549 if (device_is_attached(dev)) {
550 struct ieee80211com *ic = &sc->sc_ic;
551 struct ifnet *ifp = &ic->ic_if;
552
553 lwkt_serialize_enter(ifp->if_serializer);
554
555 acx_stop(sc);
556 acx_free_firmware(sc);
557 bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
558
559 lwkt_serialize_exit(ifp->if_serializer);
560
561 bpfdetach(ifp);
562 ieee80211_ifdetach(ic);
563 }
564
565 if (sc->sc_sysctl_tree != NULL)
566 sysctl_ctx_free(&sc->sc_sysctl_ctx);
567
568 if (sc->sc_irq_res != NULL) {
569 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irq_rid,
570 sc->sc_irq_res);
571 }
572 if (sc->sc_mem1_res != NULL) {
573 bus_release_resource(dev, SYS_RES_MEMORY, sc->chip_mem1_rid,
574 sc->sc_mem1_res);
575 }
576 if (sc->sc_mem2_res != NULL) {
577 bus_release_resource(dev, SYS_RES_MEMORY, sc->chip_mem2_rid,
578 sc->sc_mem2_res);
579 }
580
581 acx_dma_free(sc);
582 return 0;
583 }
584
585 static int
586 acx_shutdown(device_t dev)
587 {
588 struct acx_softc *sc = device_get_softc(dev);
589
590 lwkt_serialize_enter(sc->sc_ic.ic_if.if_serializer);
591 acx_stop(sc);
592 lwkt_serialize_exit(sc->sc_ic.ic_if.if_serializer);
593 return 0;
594 }
595
596 static void
597 acx_init(void *arg)
598 {
599 struct acx_softc *sc = arg;
600 struct ieee80211com *ic = &sc->sc_ic;
601 struct ifnet *ifp = &ic->ic_if;
602 struct acx_firmware *fw = &sc->sc_firmware;
603 int error;
604
605 error = acx_stop(sc);
606 if (error)
607 return;
608
609 error = acx_alloc_firmware(sc);
610 if (error)
611 return;
612
613 error = acx_init_tx_ring(sc);
614 if (error) {
615 if_printf(ifp, "can't initialize TX ring\n");
616 goto back;
617 }
618
619 error = acx_init_rx_ring(sc);
620 if (error) {
621 if_printf(ifp, "can't initialize RX ring\n");
622 goto back;
623 }
624
625 error = acx_load_base_firmware(sc, fw->base_fw, fw->base_fw_len);
626 if (error)
627 goto back;
628
629 /*
630 * Initialize command and information registers
631 * NOTE: This should be done after base firmware is loaded
632 */
633 acx_init_cmd_reg(sc);
634 acx_init_info_reg(sc);
635
636 sc->sc_flags |= ACX_FLAG_FW_LOADED;
637
638 #if 0
639 if (sc->chip_post_basefw != NULL) {
640 error = sc->chip_post_basefw(sc);
641 if (error)
642 goto back;
643 }
644 #endif
645
646 if (fw->radio_fw != NULL) {
647 error = acx_load_radio_firmware(sc, fw->radio_fw,
648 fw->radio_fw_len);
649 if (error)
650 goto back;
651 }
652
653 error = sc->chip_init(sc);
654 if (error)
655 goto back;
656
657 /* Get and set device various configuration */
658 error = acx_config(sc);
659 if (error)
660 goto back;
661
662 /* Setup crypto stuffs */
663 if (sc->sc_ic.ic_flags & IEEE80211_F_PRIVACY) {
664 error = acx_set_crypt_keys(sc);
665 if (error)
666 goto back;
667 sc->sc_ic.ic_flags &= ~IEEE80211_F_DROPUNENC;
668 }
669
670 /* Turn on power led */
671 CSR_CLRB_2(sc, ACXREG_GPIO_OUT, sc->chip_gpio_pled);
672
673 acx_enable_intr(sc);
674
675 ifp->if_flags |= IFF_RUNNING;
676 ifp->if_flags &= ~IFF_OACTIVE;
677
678 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
679 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
680 ieee80211_new_state(&sc->sc_ic, IEEE80211_S_SCAN, -1);
681 } else {
682 ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
683 }
684 back:
685 if (error)
686 acx_stop(sc);
687 }
688
689 static void
690 acx_init_info_reg(struct acx_softc *sc)
691 {
692 sc->sc_info = CSR_READ_4(sc, ACXREG_INFO_REG_OFFSET);
693 sc->sc_info_param = sc->sc_info + ACX_INFO_REG_SIZE;
694 }
695
696 static int
697 acx_set_crypt_keys(struct acx_softc *sc)
698 {
699 struct ieee80211com *ic = &sc->sc_ic;
700 struct acx_conf_wep_txkey wep_txkey;
701 int i, error, got_wk = 0;
702
703 for (i = 0; i < IEEE80211_WEP_NKID; ++i) {
704 struct ieee80211_key *wk = &ic->ic_nw_keys[i];
705
706 if (wk->wk_keylen == 0)
707 continue;
708
709 if (sc->chip_hw_crypt) {
710 error = sc->chip_set_wepkey(sc, wk, i);
711 if (error)
712 return error;
713 got_wk = 1;
714 } else if (wk->wk_flags & IEEE80211_KEY_XMIT) {
715 wk->wk_flags |= IEEE80211_KEY_SWCRYPT;
716 }
717 }
718
719 if (!got_wk || sc->chip_hw_crypt ||
720 ic->ic_def_txkey == IEEE80211_KEYIX_NONE)
721 return 0;
722
723 /* Set current WEP key index */
724 wep_txkey.wep_txkey = ic->ic_def_txkey;
725 if (acx_set_wep_txkey_conf(sc, &wep_txkey) != 0) {
726 if_printf(&ic->ic_if, "set WEP txkey failed\n");
727 return ENXIO;
728 }
729 return 0;
730 }
731
732 static void
733 acx_next_scan(void *arg)
734 {
735 struct acx_softc *sc = arg;
736 struct ieee80211com *ic = &sc->sc_ic;
737 struct ifnet *ifp = &ic->ic_if;
738
739 lwkt_serialize_enter(ifp->if_serializer);
740
741 if (ic->ic_state == IEEE80211_S_SCAN)
742 ieee80211_next_scan(ic);
743
744 lwkt_serialize_exit(ifp->if_serializer);
745 }
746
747 static int
748 acx_stop(struct acx_softc *sc)
749 {
750 struct ieee80211com *ic = &sc->sc_ic;
751 struct ifnet *ifp = &ic->ic_if;
752 struct acx_buf_data *bd = &sc->sc_buf_data;
753 struct acx_ring_data *rd = &sc->sc_ring_data;
754 int i, error;
755
756 ASSERT_SERIALIZED(ifp->if_serializer);
757
758 ieee80211_new_state(&sc->sc_ic, IEEE80211_S_INIT, -1);
759
760 sc->sc_firmware_ver = 0;
761 sc->sc_hardware_id = 0;
762
763 /* Reset hardware */
764 error = acx_reset(sc);
765 if (error)
766 return error;
767
768 /* Firmware no longer functions after hardware reset */
769 sc->sc_flags &= ~ACX_FLAG_FW_LOADED;
770
771 acx_disable_intr(sc);
772
773 /* Stop backgroud scanning */
774 callout_stop(&sc->sc_scan_timer);
775
776 /* Turn off power led */
777 CSR_SETB_2(sc, ACXREG_GPIO_OUT, sc->chip_gpio_pled);
778
779 /* Free TX mbuf */
780 for (i = 0; i < ACX_TX_DESC_CNT; ++i) {
781 struct acx_txbuf *buf;
782
783 buf = &bd->tx_buf[i];
784
785 if (buf->tb_mbuf != NULL) {
786 bus_dmamap_unload(bd->mbuf_dma_tag,
787 buf->tb_mbuf_dmamap);
788 m_freem(buf->tb_mbuf);
789 buf->tb_mbuf = NULL;
790 }
791
792 if (buf->tb_node != NULL)
793 ieee80211_free_node(buf->tb_node);
794 buf->tb_node = NULL;
795 }
796
797 /* Clear TX host descriptors */
798 bzero(rd->tx_ring, ACX_TX_RING_SIZE);
799
800 /* Free RX mbuf */
801 for (i = 0; i < ACX_RX_DESC_CNT; ++i) {
802 if (bd->rx_buf[i].rb_mbuf != NULL) {
803 bus_dmamap_unload(bd->mbuf_dma_tag,
804 bd->rx_buf[i].rb_mbuf_dmamap);
805 m_freem(bd->rx_buf[i].rb_mbuf);
806 bd->rx_buf[i].rb_mbuf = NULL;
807 }
808 }
809
810 /* Clear RX host descriptors */
811 bzero(rd->rx_ring, ACX_RX_RING_SIZE);
812
813 sc->sc_tx_timer = 0;
814 ifp->if_timer = 0;
815 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
816
817 return 0;
818 }
819
820 static int
821 acx_config(struct acx_softc *sc)
822 {
823 struct acx_config conf;
824 int error;
825
826 error = acx_read_config(sc, &conf);
827 if (error)
828 return error;
829
830 error = acx_write_config(sc, &conf);
831 if (error)
832 return error;
833
834 error = acx_rx_config(sc, sc->sc_flags & ACX_FLAG_PROMISC);
835 if (error)
836 return error;
837
838 if (acx_set_probe_req_tmplt(sc, "", 0) != 0) {
839 if_printf(&sc->sc_ic.ic_if, "can't set probe req template "
840 "(empty ssid)\n");
841 return ENXIO;
842 }
843
844 /* XXX for PM?? */
845 if (acx_set_null_tmplt(sc) != 0) {
846 if_printf(&sc->sc_ic.ic_if, "can't set null data template\n");
847 return ENXIO;
848 }
849 return 0;
850 }
851
852 static int
853 acx_read_config(struct acx_softc *sc, struct acx_config *conf)
854 {
855 struct acx_conf_eaddr addr;
856 struct acx_conf_regdom reg_dom;
857 struct acx_conf_antenna ant;
858 struct acx_conf_fwrev fw_rev;
859 uint32_t fw_rev_no;
860 uint8_t sen;
861 int i, error;
862
863 /* Get station id */
864 if (acx_get_eaddr_conf(sc, &addr) != 0) {
865 if_printf(&sc->sc_ic.ic_if, "can't get station id\n");
866 return ENXIO;
867 }
868
869 /*
870 * Get and print station id in case that EEPROM station id's
871 * offset is not correct
872 */
873 for (i = 0; i < IEEE80211_ADDR_LEN; ++i)
874 conf->eaddr[IEEE80211_ADDR_LEN - 1 - i] = addr.eaddr[i];
875 if_printf(&sc->sc_ic.ic_if, "MAC address (from firmware): %6D\n",
876 conf->eaddr, ":");
877
878 /* Get region domain */
879 if (acx_get_regdom_conf(sc, &reg_dom) != 0) {
880 if_printf(&sc->sc_ic.ic_if, "can't get region domain\n");
881 return ENXIO;
882 }
883 conf->regdom = reg_dom.regdom;
884 DPRINTF((&sc->sc_ic.ic_if, "regdom %02x\n", reg_dom.regdom));
885
886 /* Get antenna */
887 if (acx_get_antenna_conf(sc, &ant) != 0) {
888 if_printf(&sc->sc_ic.ic_if, "can't get antenna\n");
889 return ENXIO;
890 }
891 conf->antenna = ant.antenna;
892 DPRINTF((&sc->sc_ic.ic_if, "antenna %02x\n", ant.antenna));
893
894 /* Get sensitivity XXX not used */
895 if (sc->sc_radio_type == ACX_RADIO_TYPE_MAXIM ||
896 sc->sc_radio_type == ACX_RADIO_TYPE_RFMD ||
897 sc->sc_radio_type == ACX_RADIO_TYPE_RALINK) {
898 error = acx_read_phyreg(sc, ACXRV_PHYREG_SENSITIVITY, &sen);
899 if (error) {
900 if_printf(&sc->sc_ic.ic_if, "can't get sensitivity\n");
901 return error;
902 }
903 } else {
904 sen = 0;
905 }
906 DPRINTF((&sc->sc_ic.ic_if, "sensitivity %02x\n", sen));
907
908 /* Get firmware revision */
909 if (acx_get_fwrev_conf(sc, &fw_rev) != 0) {
910 if_printf(&sc->sc_ic.ic_if, "can't get firmware revision\n");
911 return ENXIO;
912 }
913
914 if (strncmp(fw_rev.fw_rev, "Rev ", 4) != 0) {
915 if_printf(&sc->sc_ic.ic_if, "strange revision string -- %s\n",
916 fw_rev.fw_rev);
917 fw_rev_no = 0x01090407;
918 } else {
919 char *s, *endp;
920
921 /*
922 * 01234
923 * "Rev xx.xx.xx.xx"
924 * ^ Start from here
925 */
926 s = &fw_rev.fw_rev[4];
927 fw_rev_no = 0;
928 for (i = 0; i < 4; ++i) {
929 uint8_t val;
930
931 val = strtoul(s, &endp, 16);
932 fw_rev_no |= val << ((3 - i) * 8);
933
934 if (*endp == '\0')
935 break;
936 else
937 s = ++endp;
938 }
939 }
940 sc->sc_firmware_ver = fw_rev_no;
941 sc->sc_hardware_id = le32toh(fw_rev.hw_id);
942 DPRINTF((&sc->sc_ic.ic_if, "fw rev %08x, hw id %08x\n",
943 sc->sc_firmware_ver, sc->sc_hardware_id));
944
945 if (sc->chip_read_config != NULL) {
946 error = sc->chip_read_config(sc, conf);
947 if (error)
948 return error;
949 }
950 return 0;
951 }
952
953 static int
954 acx_write_config(struct acx_softc *sc, struct acx_config *conf)
955 {
956 struct acx_conf_nretry_short sretry;
957 struct acx_conf_nretry_long lretry;
958 struct acx_conf_msdu_lifetime msdu_lifetime;
959 struct acx_conf_rate_fallback rate_fb;
960 struct acx_conf_antenna ant;
961 struct acx_conf_regdom reg_dom;
962 int error;
963
964 /* Set number of long/short retry */
965 KKASSERT(sc->chip_short_retry_limit > 0);
966 sretry.nretry = sc->chip_short_retry_limit;
967 if (acx_set_nretry_short_conf(sc, &sretry) != 0) {
968 if_printf(&sc->sc_ic.ic_if, "can't set short retry limit\n");
969 return ENXIO;
970 }
971
972 lretry.nretry = sc->sc_long_retry_limit;
973 if (acx_set_nretry_long_conf(sc, &lretry) != 0) {
974 if_printf(&sc->sc_ic.ic_if, "can't set long retry limit\n");
975 return ENXIO;
976 }
977
978 /* Set MSDU lifetime */
979 msdu_lifetime.lifetime = htole32(sc->sc_msdu_lifetime);
980 if (acx_set_msdu_lifetime_conf(sc, &msdu_lifetime) != 0) {
981 if_printf(&sc->sc_ic.ic_if, "can't set MSDU lifetime\n");
982 return ENXIO;
983 }
984
985 /* Enable rate fallback */
986 rate_fb.ratefb_enable = 1;
987 if (acx_set_rate_fallback_conf(sc, &rate_fb) != 0) {
988 if_printf(&sc->sc_ic.ic_if, "can't enable rate fallback\n");
989 return ENXIO;
990 }
991
992 /* Set antenna */
993 ant.antenna = conf->antenna;
994 if (acx_set_antenna_conf(sc, &ant) != 0) {
995 if_printf(&sc->sc_ic.ic_if, "can't set antenna\n");
996 return ENXIO;
997 }
998
999 /* Set region domain */
1000 reg_dom.regdom = conf->regdom;
1001 if (acx_set_regdom_conf(sc, &reg_dom) != 0) {
1002 if_printf(&sc->sc_ic.ic_if, "can't set region domain\n");
1003 return ENXIO;
1004 }
1005
1006 if (sc->chip_write_config != NULL) {
1007 error = sc->chip_write_config(sc, conf);
1008 if (error)
1009 return error;
1010 }
1011
1012 return 0;
1013 }
1014
1015 static int
1016 acx_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr)
1017 {
1018 struct acx_softc *sc = ifp->if_softc;
1019 struct ieee80211com *ic = &sc->sc_ic;
1020 struct ifreq *req;
1021 int error;
1022
1023 error = 0;
1024 req = (struct ifreq *)data;
1025
1026 switch (cmd) {
1027 case SIOCSIFFLAGS:
1028 if (ifp->if_flags & IFF_UP) {
1029 if ((ifp->if_flags & IFF_RUNNING)) {
1030 int promisc = -1;
1031
1032 if ((ifp->if_flags & IFF_PROMISC) &&
1033 (sc->sc_flags & ACX_FLAG_PROMISC) == 0)
1034 promisc = 1;
1035 else if ((ifp->if_flags & IFF_PROMISC) == 0 &&
1036 (sc->sc_flags & ACX_FLAG_PROMISC))
1037 promisc = 0;
1038
1039 /*
1040 * Promisc mode is always enabled when
1041 * operation mode is Monitor.
1042 */
1043 if (ic->ic_opmode != IEEE80211_M_MONITOR &&
1044 promisc >= 0)
1045 error = acx_rx_config(sc, promisc);
1046 } else {
1047 acx_init(sc);
1048 }
1049 } else {
1050 if (ifp->if_flags & IFF_RUNNING)
1051 acx_stop(sc);
1052 }
1053
1054 if (ifp->if_flags & IFF_PROMISC)
1055 sc->sc_flags |= ACX_FLAG_PROMISC;
1056 else
1057 sc->sc_flags &= ~ACX_FLAG_PROMISC;
1058 break;
1059 case SIOCADDMULTI:
1060 case SIOCDELMULTI:
1061 /* TODO */
1062 break;
1063 default:
1064 error = ieee80211_ioctl(ic, cmd, data, cr);
1065 break;
1066 }
1067
1068 if (error == ENETRESET) {
1069 if ((ifp->if_flags & (IFF_RUNNING | IFF_UP)) ==
1070 (IFF_RUNNING | IFF_UP))
1071 acx_init(sc);
1072 error = 0;
1073 }
1074 return error;
1075 }
1076
1077 static void
1078 acx_start(struct ifnet *ifp)
1079 {
1080 struct acx_softc *sc = ifp->if_softc;
1081 struct ieee80211com *ic = &sc->sc_ic;
1082 struct acx_buf_data *bd = &sc->sc_buf_data;
1083 struct acx_txbuf *buf;
1084 int trans, idx;
1085
1086 ASSERT_SERIALIZED(ifp->if_serializer);
1087
1088 if ((sc->sc_flags & ACX_FLAG_FW_LOADED) == 0 ||
1089 (ifp->if_flags & IFF_RUNNING) == 0 ||
1090 (ifp->if_flags & IFF_OACTIVE))
1091 return;
1092
1093 /*
1094 * NOTE:
1095 * We can't start from a random position that TX descriptor
1096 * is free, since hardware will be confused by that.
1097 * We have to follow the order of the TX ring.
1098 */
1099 idx = bd->tx_free_start;
1100 trans = 0;
1101 for (buf = &bd->tx_buf[idx]; buf->tb_mbuf == NULL;
1102 buf = &bd->tx_buf[idx]) {
1103 struct ieee80211_frame *f;
1104 struct ieee80211_node *ni = NULL;
1105 struct mbuf *m;
1106 int mgmt_pkt = 0;
1107
1108 if (!IF_QEMPTY(&ic->ic_mgtq)) {
1109 IF_DEQUEUE(&ic->ic_mgtq, m);
1110
1111 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
1112 m->m_pkthdr.rcvif = NULL;
1113
1114 mgmt_pkt = 1;
1115
1116 /*
1117 * Don't transmit probe response firmware will
1118 * do it for us.
1119 */
1120 f = mtod(m, struct ieee80211_frame *);
1121 if ((f->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
1122 IEEE80211_FC0_TYPE_MGT &&
1123 (f->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) ==
1124 IEEE80211_FC0_SUBTYPE_PROBE_RESP) {
1125 if (ni != NULL)
1126 ieee80211_free_node(ni);
1127 m_freem(m);
1128 continue;
1129 }
1130 } else if (!ifq_is_empty(&ifp->if_snd)) {
1131 struct ether_header *eh;
1132
1133 if (ic->ic_state != IEEE80211_S_RUN)
1134 break;
1135
1136 m = ifq_dequeue(&ifp->if_snd, NULL);
1137 if (m == NULL)
1138 break;
1139
1140 if (m->m_len < sizeof(struct ether_header)) {
1141 m = m_pullup(m, sizeof(struct ether_header));
1142 if (m == NULL) {
1143 ifp->if_oerrors++;
1144 continue;
1145 }
1146 }
1147 eh = mtod(m, struct ether_header *);
1148
1149 ni = ieee80211_find_txnode(ic, eh->ether_dhost);
1150 if (ni == NULL) {
1151 m_freem(m);
1152 ifp->if_oerrors++;
1153 continue;
1154 }
1155
1156 /* TODO power save */
1157
1158 BPF_MTAP(ifp, m);
1159
1160 m = ieee80211_encap(ic, m, ni);
1161 if (m == NULL) {
1162 ieee80211_free_node(ni);
1163 ifp->if_oerrors++;
1164 continue;
1165 }
1166 } else {
1167 break;
1168 }
1169
1170 if (ic->ic_rawbpf != NULL)
1171 bpf_mtap(ic->ic_rawbpf, m);
1172
1173 f = mtod(m, struct ieee80211_frame *);
1174 if ((f->i_fc[1] & IEEE80211_FC1_WEP) && !sc->chip_hw_crypt) {
1175 KASSERT(ni != NULL, ("TX node is NULL (WEP)\n"));
1176 if (ieee80211_crypto_encap(ic, ni, m) == NULL) {
1177 ieee80211_free_node(ni);
1178 m_freem(m);
1179 ifp->if_oerrors++;
1180 continue;
1181 }
1182 }
1183
1184 /*
1185 * Since mgmt data are transmitted at fixed rate
1186 * they will not be used to do rate control.
1187 */
1188 if (mgmt_pkt && ni != NULL) {
1189 ieee80211_free_node(ni);
1190 ni = NULL;
1191 }
1192
1193 if (acx_encap(sc, buf, m, ni) != 0) {
1194 /*
1195 * NOTE: `m' will be freed in acx_encap()
1196 * if we reach here.
1197 */
1198 if (ni != NULL)
1199 ieee80211_free_node(ni);
1200 ifp->if_oerrors++;
1201 continue;
1202 }
1203
1204 /*
1205 * NOTE:
1206 * 1) `m' should not be touched after acx_encap()
1207 * 2) `node' will be used to do TX rate control during
1208 * acx_txeof(), so it is not freed here. acx_txeof()
1209 * will free it for us
1210 */
1211
1212 trans = 1;
1213 bd->tx_used_count++;
1214 idx = (idx + 1) % ACX_TX_DESC_CNT;
1215 }
1216 bd->tx_free_start = idx;
1217
1218 if (bd->tx_used_count == ACX_TX_DESC_CNT)
1219 ifp->if_flags |= IFF_OACTIVE;
1220
1221 if (trans && sc->sc_tx_timer == 0)
1222 sc->sc_tx_timer = 5;
1223 ifp->if_timer = 1;
1224 }
1225
1226 static void
1227 acx_watchdog(struct ifnet *ifp)
1228 {
1229 struct acx_softc *sc = ifp->if_softc;
1230
1231 ifp->if_timer = 0;
1232
1233 if ((ifp->if_flags & IFF_RUNNING) == 0)
1234 return;
1235
1236 if (sc->sc_tx_timer) {
1237 if (--sc->sc_tx_timer == 0) {
1238 if_printf(ifp, "watchdog timeout\n");
1239 ifp->if_oerrors++;
1240 acx_txeof(ifp->if_softc);
1241 } else {
1242 ifp->if_timer = 1;
1243 }
1244 }
1245 ieee80211_watchdog(&sc->sc_ic);
1246 }
1247
1248 static void
1249 acx_intr(void *arg)
1250 {
1251 struct acx_softc *sc = arg;
1252 uint16_t intr_status;
1253
1254 if ((sc->sc_flags & ACX_FLAG_FW_LOADED) == 0)
1255 return;
1256
1257 intr_status = CSR_READ_2(sc, ACXREG_INTR_STATUS_CLR);
1258 if (intr_status == ACXRV_INTR_ALL) {
1259 /* not our interrupt */
1260 return;
1261 }
1262
1263 intr_status &= sc->chip_intr_enable;
1264 if (intr_status == 0) {
1265 /* not interrupts we care about */
1266 return;
1267 }
1268
1269 /* Acknowledge all interrupts */
1270 CSR_WRITE_2(sc, ACXREG_INTR_ACK, ACXRV_INTR_ALL);
1271
1272 if (intr_status & ACXRV_INTR_TX_FINI)
1273 acx_txeof(sc);
1274
1275 if (intr_status & ACXRV_INTR_RX_FINI)
1276 acx_rxeof(sc);
1277 }
1278
1279 static void
1280 acx_disable_intr(struct acx_softc *sc)
1281 {
1282 CSR_WRITE_2(sc, ACXREG_INTR_MASK, sc->chip_intr_disable);
1283 CSR_WRITE_2(sc, ACXREG_EVENT_MASK, 0);
1284 }
1285
1286 static void
1287 acx_enable_intr(struct acx_softc *sc)
1288 {
1289 /* Mask out interrupts that are not in the enable set */
1290 CSR_WRITE_2(sc, ACXREG_INTR_MASK, ~sc->chip_intr_enable);
1291 CSR_WRITE_2(sc, ACXREG_EVENT_MASK, ACXRV_EVENT_DISABLE);
1292 }
1293
1294 static void
1295 acx_txeof(struct acx_softc *sc)
1296 {
1297 struct acx_buf_data *bd;
1298 struct acx_txbuf *buf;
1299 struct ifnet *ifp;
1300 int idx;
1301
1302 ifp = &sc->sc_ic.ic_if;
1303 ASSERT_SERIALIZED(ifp->if_serializer);
1304
1305 bd = &sc->sc_buf_data;
1306 idx = bd->tx_used_start;
1307 for (buf = &bd->tx_buf[idx]; buf->tb_mbuf != NULL;
1308 buf = &bd->tx_buf[idx]) {
1309 uint8_t ctrl, error;
1310 int frame_len;
1311
1312 ctrl = FW_TXDESC_GETFIELD_1(sc, buf, f_tx_ctrl);
1313 if ((ctrl & (DESC_CTRL_HOSTOWN | DESC_CTRL_ACXDONE)) !=
1314 (DESC_CTRL_HOSTOWN | DESC_CTRL_ACXDONE))
1315 break;
1316
1317 bus_dmamap_unload(bd->mbuf_dma_tag, buf->tb_mbuf_dmamap);
1318 frame_len = buf->tb_mbuf->m_pkthdr.len;
1319 m_freem(buf->tb_mbuf);
1320 buf->tb_mbuf = NULL;
1321
1322 error = FW_TXDESC_GETFIELD_1(sc, buf, f_tx_error);
1323 if (error) {
1324 acx_txerr(sc, error);
1325 ifp->if_oerrors++;
1326 } else {
1327 ifp->if_opackets++;
1328 }
1329
1330 if (buf->tb_node != NULL) {
1331 sc->chip_tx_complete(sc, buf, frame_len, error);
1332 ieee80211_free_node(buf->tb_node);
1333 buf->tb_node = NULL;
1334 }
1335
1336 FW_TXDESC_SETFIELD_1(sc, buf, f_tx_ctrl, DESC_CTRL_HOSTOWN);
1337
1338 bd->tx_used_count--;
1339
1340 idx = (idx + 1) % ACX_TX_DESC_CNT;
1341 }
1342 bd->tx_used_start = idx;
1343
1344 sc->sc_tx_timer = bd->tx_used_count == 0 ? 0 : 5;
1345
1346 if (bd->tx_used_count != ACX_TX_DESC_CNT) {
1347 ifp->if_flags &= ~IFF_OACTIVE;
1348 acx_start(ifp);
1349 }
1350 }
1351
1352 static void
1353 acx_txerr(struct acx_softc *sc, uint8_t err)
1354 {
1355 struct ifnet *ifp = &sc->sc_ic.ic_if;
1356 struct acx_stats *stats = &sc->sc_stats;
1357
1358 if (err == DESC_ERR_EXCESSIVE_RETRY) {
1359 /*
1360 * This a common error (see comment below),
1361 * so print it using DPRINTF()
1362 */
1363 DPRINTF((ifp, "TX failed -- excessive retry\n"));
1364 } else {
1365 if_printf(ifp, "TX failed -- ");
1366 }
1367
1368 /*
1369 * Although `err' looks like bitmask, it never
1370 * has multiple bits set.
1371 */
1372 switch (err) {
1373 #if 0
1374 case DESC_ERR_OTHER_FRAG:
1375 /* XXX what's this */
1376 kprintf("error in other fragment\n");
1377 stats->err_oth_frag++;
1378 break;
1379 #endif
1380 case DESC_ERR_ABORT:
1381 kprintf("aborted\n");
1382 stats->err_abort++;
1383 break;
1384 case DESC_ERR_PARAM:
1385 kprintf("wrong parameters in descriptor\n");
1386 stats->err_param++;
1387 break;
1388 case DESC_ERR_NO_WEPKEY:
1389 kprintf("WEP key missing\n");
1390 stats->err_no_wepkey++;
1391 break;
1392 case DESC_ERR_MSDU_TIMEOUT:
1393 kprintf("MSDU life timeout\n");
1394 stats->err_msdu_timeout++;
1395 break;
1396 case DESC_ERR_EXCESSIVE_RETRY:
1397 /*
1398 * Possible causes:
1399 * 1) Distance is too long
1400 * 2) Transmit failed (e.g. no MAC level ACK)
1401 * 3) Chip overheated (this should be rare)
1402 */
1403 stats->err_ex_retry++;
1404 break;
1405 case DESC_ERR_BUF_OVERFLOW:
1406 kprintf("buffer overflow\n");
1407 stats->err_buf_oflow++;
1408 break;
1409 case DESC_ERR_DMA:
1410 kprintf("DMA error\n");
1411 stats->err_dma++;
1412 break;
1413 default:
1414 kprintf("unknown error %d\n", err);
1415 stats->err_unkn++;
1416 break;
1417 }
1418 }
1419
1420 static void
1421 acx_rxeof(struct acx_softc *sc)
1422 {
1423 struct ieee80211com *ic = &sc->sc_ic;
1424 struct acx_ring_data *rd = &sc->sc_ring_data;
1425 struct acx_buf_data *bd = &sc->sc_buf_data;
1426 struct ifnet *ifp = &ic->ic_if;
1427 int idx, ready;
1428
1429 ASSERT_SERIALIZED(ic->ic_if.if_serializer);
1430
1431 bus_dmamap_sync(rd->rx_ring_dma_tag, rd->rx_ring_dmamap,
1432 BUS_DMASYNC_POSTREAD);
1433
1434 /*
1435 * Locate first "ready" rx buffer,
1436 * start from last stopped position
1437 */
1438 idx = bd->rx_scan_start;
1439 ready = 0;
1440 do {
1441 struct acx_rxbuf *buf;
1442
1443 buf = &bd->rx_buf[idx];
1444 if ((buf->rb_desc->h_ctrl & htole16(DESC_CTRL_HOSTOWN)) &&
1445 (buf->rb_desc->h_status & htole32(DESC_STATUS_FULL))) {
1446 ready = 1;
1447 break;
1448 }
1449 idx = (idx + 1) % ACX_RX_DESC_CNT;
1450 } while (idx != bd->rx_scan_start);
1451
1452 if (!ready)
1453 return;
1454
1455 /*
1456 * NOTE: don't mess up `idx' here, it will
1457 * be used in the following code
1458 */
1459
1460 do {
1461 struct acx_rxbuf_hdr *head;
1462 struct acx_rxbuf *buf;
1463 struct ieee80211_frame_min *wh;
1464 struct mbuf *m;
1465 uint32_t desc_status;
1466 uint16_t desc_ctrl;
1467 int len, error, rssi, is_priv;
1468
1469 buf = &bd->rx_buf[idx];
1470
1471 desc_ctrl = le16toh(buf->rb_desc->h_ctrl);
1472 desc_status = le32toh(buf->rb_desc->h_status);
1473 if (!(desc_ctrl & DESC_CTRL_HOSTOWN) ||
1474 !(desc_status & DESC_STATUS_FULL))
1475 break;
1476
1477 bus_dmamap_sync(bd->mbuf_dma_tag, buf->rb_mbuf_dmamap,
1478 BUS_DMASYNC_POSTREAD);
1479
1480 m = buf->rb_mbuf;
1481
1482 error = acx_newbuf(sc, buf, 0);
1483 if (error) {
1484 ifp->if_ierrors++;
1485 goto next;
1486 }
1487
1488 head = mtod(m, struct acx_rxbuf_hdr *);
1489 len = le16toh(head->rbh_len) & ACX_RXBUF_LEN_MASK;
1490 rssi = acx_get_rssi(sc, head->rbh_level);
1491
1492 m_adj(m, sizeof(struct acx_rxbuf_hdr) + sc->chip_rxbuf_exhdr);
1493 m->m_len = m->m_pkthdr.len = len;
1494 m->m_pkthdr.rcvif = &ic->ic_if;
1495
1496 wh = mtod(m, struct ieee80211_frame_min *);
1497 is_priv = (wh->i_fc[1] & IEEE80211_FC1_WEP);
1498
1499 if (sc->sc_drvbpf != NULL) {
1500 sc->sc_rx_th.wr_tsf = htole32(head->rbh_time);
1501
1502 sc->sc_rx_th.wr_flags = 0;
1503 if (is_priv) {
1504 sc->sc_rx_th.wr_flags |=
1505 IEEE80211_RADIOTAP_F_WEP;
1506 }
1507 if (head->rbh_bbp_stat & ACX_RXBUF_STAT_SHPRE) {
1508 sc->sc_rx_th.wr_flags |=
1509 IEEE80211_RADIOTAP_F_SHORTPRE;
1510 }
1511
1512 if (sc->chip_phymode == IEEE80211_MODE_11G) {
1513 sc->sc_rx_th.wr_rate =
1514 ieee80211_plcp2rate(head->rbh_plcp,
1515 head->rbh_bbp_stat & ACX_RXBUF_STAT_OFDM);
1516 } else {
1517 sc->sc_rx_th.wr_rate =
1518 ieee80211_plcp2rate(head->rbh_plcp, 0);
1519 }
1520
1521 sc->sc_rx_th.wr_antsignal = rssi;
1522
1523 if (head->rbh_bbp_stat & ACX_RXBUF_STAT_ANT1)
1524 sc->sc_rx_th.wr_antenna = 1;
1525 else
1526 sc->sc_rx_th.wr_antenna = 0;
1527
1528 bpf_ptap(sc->sc_drvbpf, m, &sc->sc_rx_th,
1529 sc->sc_rx_th_len);
1530 }
1531
1532 if (len >= sizeof(struct ieee80211_frame_min) &&
1533 len < MCLBYTES) {
1534 struct ieee80211_node *ni;
1535
1536 if (is_priv && sc->chip_hw_crypt) {
1537 /* Short circuit software WEP */
1538 wh->i_fc[1] &= ~IEEE80211_FC1_WEP;
1539
1540 /* Do chip specific RX buffer processing */
1541 if (sc->chip_proc_wep_rxbuf != NULL) {
1542 sc->chip_proc_wep_rxbuf(sc, m, &len);
1543 wh = mtod(m,
1544 struct ieee80211_frame_min *);
1545 }
1546 }
1547 m->m_len = m->m_pkthdr.len = len;
1548
1549 ni = ieee80211_find_rxnode(ic, wh);
1550 ieee80211_input(ic, m, ni, rssi,
1551 le32toh(head->rbh_time));
1552 ieee80211_free_node(ni);
1553
1554 ifp->if_ipackets++;
1555 } else {
1556 if (len < sizeof(struct ieee80211_frame_min)) {
1557 if (ic->ic_rawbpf != NULL &&
1558 len >= sizeof(struct ieee80211_frame_ack))
1559 bpf_mtap(ic->ic_rawbpf, m);
1560
1561 if (ic->ic_opmode != IEEE80211_M_MONITOR)
1562 ic->ic_stats.is_rx_tooshort++;
1563 }
1564 m_freem(m);
1565 }
1566 next:
1567 buf->rb_desc->h_ctrl = htole16(desc_ctrl & ~DESC_CTRL_HOSTOWN);
1568 buf->rb_desc->h_status = 0;
1569 bus_dmamap_sync(rd->rx_ring_dma_tag, rd->rx_ring_dmamap,
1570 BUS_DMASYNC_PREWRITE);
1571
1572 idx = (idx + 1) % ACX_RX_DESC_CNT;
1573 } while (idx != bd->rx_scan_start);
1574
1575 /*
1576 * Record the position so that next
1577 * time we can start from it
1578 */
1579 bd->rx_scan_start = idx;
1580 }
1581
1582 static int
1583 acx_reset(struct acx_softc *sc)
1584 {
1585 uint16_t reg;
1586
1587 /* Halt ECPU */
1588 CSR_SETB_2(sc, ACXREG_ECPU_CTRL, ACXRV_ECPU_HALT);
1589
1590 /* Software reset */
1591 reg = CSR_READ_2(sc, ACXREG_SOFT_RESET);
1592 CSR_WRITE_2(sc, ACXREG_SOFT_RESET, reg | ACXRV_SOFT_RESET);
1593 DELAY(100);
1594 CSR_WRITE_2(sc, ACXREG_SOFT_RESET, reg);
1595
1596 /* Initialize EEPROM */
1597 CSR_SETB_2(sc, ACXREG_EEPROM_INIT, ACXRV_EEPROM_INIT);
1598 DELAY(50000);
1599
1600 /* Test whether ECPU is stopped */
1601 reg = CSR_READ_2(sc, ACXREG_ECPU_CTRL);
1602 if (!(reg & ACXRV_ECPU_HALT)) {
1603 if_printf(&sc->sc_ic.ic_if, "can't halt ECPU\n");
1604 return ENXIO;
1605 }
1606 return 0;
1607 }
1608
1609 static int
1610 acx_read_eeprom(struct acx_softc *sc, uint32_t offset, uint8_t *val)
1611 {
1612 int i;
1613
1614 CSR_WRITE_4(sc, ACXREG_EEPROM_CONF, 0);
1615 CSR_WRITE_4(sc, ACXREG_EEPROM_ADDR, offset);
1616 CSR_WRITE_4(sc, ACXREG_EEPROM_CTRL, ACXRV_EEPROM_READ);
1617
1618 #define EE_READ_RETRY_MAX 100
1619 for (i = 0; i < EE_READ_RETRY_MAX; ++i) {
1620 if (CSR_READ_2(sc, ACXREG_EEPROM_CTRL) == 0)
1621 break;
1622 DELAY(10000);
1623 }
1624 if (i == EE_READ_RETRY_MAX) {
1625 if_printf(&sc->sc_ic.ic_if, "can't read EEPROM offset %x "
1626 "(timeout)\n", offset);
1627 return ETIMEDOUT;
1628 }
1629 #undef EE_READ_RETRY_MAX
1630
1631 *val = CSR_READ_1(sc, ACXREG_EEPROM_DATA);
1632 return 0;
1633 }
1634
1635 static int
1636 acx_read_phyreg(struct acx_softc *sc, uint32_t reg, uint8_t *val)
1637 {
1638 int i;
1639
1640 CSR_WRITE_4(sc, ACXREG_PHY_ADDR, reg);
1641 CSR_WRITE_4(sc, ACXREG_PHY_CTRL, ACXRV_PHY_READ);
1642
1643 #define PHY_READ_RETRY_MAX 100
1644 for (i = 0; i < PHY_READ_RETRY_MAX; ++i) {
1645 if (CSR_READ_4(sc, ACXREG_PHY_CTRL) == 0)
1646 break;
1647 DELAY(10000);
1648 }
1649 if (i == PHY_READ_RETRY_MAX) {
1650 if_printf(&sc->sc_ic.ic_if, "can't read phy reg %x (timeout)\n",
1651 reg);
1652 return ETIMEDOUT;
1653 }
1654 #undef PHY_READ_RETRY_MAX
1655
1656 *val = CSR_READ_1(sc, ACXREG_PHY_DATA);
1657 return 0;
1658 }
1659
1660 void
1661 acx_write_phyreg(struct acx_softc *sc, uint32_t reg, uint8_t val)
1662 {
1663 CSR_WRITE_4(sc, ACXREG_PHY_DATA, val);
1664 CSR_WRITE_4(sc, ACXREG_PHY_ADDR, reg);
1665 CSR_WRITE_4(sc, ACXREG_PHY_CTRL, ACXRV_PHY_WRITE);
1666 }
1667
1668 static int
1669 acx_alloc_firmware(struct acx_softc *sc)
1670 {
1671 struct acx_firmware *fw = &sc->sc_firmware;
1672 struct ifnet *ifp = &sc->sc_ic.ic_if;
1673 struct fw_image *img;
1674 char filename[64];
1675 int error = 0;
1676
1677 /*
1678 * NB: serializer need to be released before loading firmware
1679 * image to avoid possible dead lock
1680 */
1681 ASSERT_SERIALIZED(ifp->if_serializer);
1682
1683 if (fw->base_fw_image == NULL) {
1684 if (fw->combined_radio_fw) {
1685 ksnprintf(filename, sizeof(filename),
1686 ACX_BASE_RADIO_FW_PATH,
1687 fw->fwdir, sc->sc_radio_type);
1688 } else {
1689 ksnprintf(filename, sizeof(filename),
1690 ACX_BASE_FW_PATH, fw->fwdir);
1691 }
1692
1693 lwkt_serialize_exit(ifp->if_serializer);
1694 img = firmware_image_load(filename, NULL);
1695 lwkt_serialize_enter(ifp->if_serializer);
1696
1697 fw->base_fw_image = img;
1698 if (fw->base_fw_image == NULL) {
1699 if_printf(ifp, "load %s base fw failed\n", filename);
1700 error = EIO;
1701 goto back;
1702 }
1703
1704 error = acx_setup_firmware(sc, fw->base_fw_image,
1705 &fw->base_fw, &fw->base_fw_len);
1706 if (error)
1707 goto back;
1708 }
1709
1710 if (!fw->combined_radio_fw && fw->radio_fw_image == NULL) {
1711 ksnprintf(filename, sizeof(filename), ACX_RADIO_FW_PATH,
1712 fw->fwdir, sc->sc_radio_type);
1713
1714 lwkt_serialize_exit(ifp->if_serializer);
1715 img = firmware_image_load(filename, NULL);
1716 lwkt_serialize_enter(ifp->if_serializer);
1717
1718 fw->radio_fw_image = img;
1719 if (fw->radio_fw_image == NULL) {
1720 if_printf(ifp, "load %s radio fw failed\n", filename);
1721 error = EIO;
1722 goto back;
1723 }
1724
1725 error = acx_setup_firmware(sc, fw->radio_fw_image,
1726 &fw->radio_fw, &fw->radio_fw_len);
1727 }
1728 back:
1729 if (error)
1730 acx_free_firmware(sc);
1731 return error;
1732 }
1733
1734 static int
1735 acx_setup_firmware(struct acx_softc *sc, struct fw_image *img,
1736 const uint8_t **ptr, int *len)
1737 {
1738 const struct acx_firmware_hdr *hdr;
1739 const uint8_t *p;
1740 uint32_t cksum;
1741 int i;
1742
1743 *ptr = NULL;
1744 *len = 0;
1745
1746 /*
1747 * Make sure that the firmware image contains more than just a header
1748 */
1749 if (img->fw_imglen <= sizeof(*hdr)) {
1750 if_printf(&sc->sc_ic.ic_if, "%s is invalid image, "
1751 "size %u (too small)\n",
1752 img->fw_name, img->fw_imglen);
1753 return EINVAL;
1754 }
1755 hdr = (const struct acx_firmware_hdr *)img->fw_image;
1756
1757 /*
1758 * Verify length
1759 */
1760 if (hdr->fwh_len != img->fw_imglen - sizeof(*hdr)) {
1761 if_printf(&sc->sc_ic.ic_if, "%s is invalid image, "
1762 "size in hdr %u and image size %u mismatches\n",
1763 img->fw_name, hdr->fwh_len, img->fw_imglen);
1764 return EINVAL;
1765 }
1766
1767 /*
1768 * Verify cksum
1769 */
1770 cksum = 0;
1771 for (i = 0, p = (const uint8_t *)&hdr->fwh_len;
1772 i < img->fw_imglen - sizeof(hdr->fwh_cksum); ++i, ++p)
1773 cksum += *p;
1774 if (cksum != hdr->fwh_cksum) {
1775 if_printf(&sc->sc_ic.ic_if, "%s is invalid image, "
1776 "checksum mismatch\n", img->fw_name);
1777 return EINVAL;
1778 }
1779
1780 *ptr = ((const uint8_t *)img->fw_image + sizeof(*hdr));
1781 *len = img->fw_imglen - sizeof(*hdr);
1782 return 0;
1783 }
1784
1785 static void
1786 acx_free_firmware(struct acx_softc *sc)
1787 {
1788 struct acx_firmware *fw = &sc->sc_firmware;
1789
1790 if (fw->base_fw_image != NULL) {
1791 firmware_image_unload(fw->base_fw_image);
1792 fw->base_fw_image = NULL;
1793 fw->base_fw = NULL;
1794 fw->base_fw_len = 0;
1795 }
1796 if (fw->radio_fw_image != NULL) {
1797 firmware_image_unload(fw->radio_fw_image);
1798 fw->radio_fw_image = NULL;
1799 fw->radio_fw = NULL;
1800 fw->radio_fw_len = 0;
1801 }
1802 }
1803
1804 static int
1805 acx_load_base_firmware(struct acx_softc *sc, const uint8_t *base_fw,
1806 uint32_t base_fw_len)
1807 {
1808 int i, error;
1809
1810 /* Load base firmware */
1811 error = acx_load_firmware(sc, 0, base_fw, base_fw_len);
1812 if (error) {
1813 if_printf(&sc->sc_ic.ic_if, "can't load base firmware\n");
1814 return error;
1815 }
1816 DPRINTF((&sc->sc_ic.ic_if, "base firmware loaded\n"));
1817
1818 /* Start ECPU */
1819 CSR_WRITE_2(sc, ACXREG_ECPU_CTRL, ACXRV_ECPU_START);
1820
1821 /* Wait for ECPU to be up */
1822 for (i = 0; i < 500; ++i) {
1823 uint16_t reg;
1824
1825 reg = CSR_READ_2(sc, ACXREG_INTR_STATUS);
1826 if (reg & ACXRV_INTR_FCS_THRESH) {
1827 CSR_WRITE_2(sc, ACXREG_INTR_ACK, ACXRV_INTR_FCS_THRESH);
1828 return 0;
1829 }
1830 DELAY(10000);
1831 }
1832
1833 if_printf(&sc->sc_ic.ic_if, "can't initialize ECPU (timeout)\n");
1834 return ENXIO;
1835 }
1836
1837 static int
1838 acx_load_radio_firmware(struct acx_softc *sc, const uint8_t *radio_fw,
1839 uint32_t radio_fw_len)
1840 {
1841 struct acx_conf_mmap mem_map;
1842 uint32_t radio_fw_ofs;
1843 int error;
1844
1845 /*
1846 * Get the position, where base firmware is loaded, so that
1847 * radio firmware can be loaded after it.
1848 */
1849 if (acx_get_mmap_conf(sc, &mem_map) != 0)
1850 return ENXIO;
1851 radio_fw_ofs = le32toh(mem_map.code_end);
1852
1853 /* Put ECPU into sleeping state, before loading radio firmware */
1854 if (acx_sleep(sc) != 0)
1855 return ENXIO;
1856
1857 /* Load radio firmware */
1858 error = acx_load_firmware(sc, radio_fw_ofs, radio_fw, radio_fw_len);
1859 if (error) {
1860 if_printf(&sc->sc_ic.ic_if, "can't load radio firmware\n");
1861 return ENXIO;
1862 }
1863 DPRINTF((&sc->sc_ic.ic_if, "radio firmware loaded\n"));
1864
1865 /* Wake up sleeping ECPU, after radio firmware is loaded */
1866 if (acx_wakeup(sc) != 0)
1867 return ENXIO;
1868
1869 /* Initialize radio */
1870 if (acx_init_radio(sc, radio_fw_ofs, radio_fw_len) != 0)
1871 return ENXIO;
1872
1873 /* Verify radio firmware's loading position */
1874 if (acx_get_mmap_conf(sc, &mem_map) != 0)
1875 return ENXIO;
1876 if (le32toh(mem_map.code_end) != radio_fw_ofs + radio_fw_len) {
1877 if_printf(&sc->sc_ic.ic_if, "loaded radio firmware position "
1878 "mismatch\n");
1879 return ENXIO;
1880 }
1881
1882 DPRINTF((&sc->sc_ic.ic_if, "radio firmware initialized\n"));
1883 return 0;
1884 }
1885
1886 static int
1887 acx_load_firmware(struct acx_softc *sc, uint32_t offset, const uint8_t *data,
1888 int data_len)
1889 {
1890 const uint32_t *fw;
1891 int i, fw_len;
1892
1893 fw = (const uint32_t *)data;
1894 fw_len = data_len / sizeof(uint32_t);
1895
1896 /*
1897 * LOADFW_AUTO_INC only works with some older firmware:
1898 * 1) acx100's firmware
1899 * 2) acx111's firmware whose rev is 0x00010011
1900 */
1901
1902 /* Load firmware */
1903 CSR_WRITE_4(sc, ACXREG_FWMEM_START, ACXRV_FWMEM_START_OP);
1904 #ifndef LOADFW_AUTO_INC
1905 CSR_WRITE_4(sc, ACXREG_FWMEM_CTRL, 0);
1906 #else
1907 CSR_WRITE_4(sc, ACXREG_FWMEM_CTRL, ACXRV_FWMEM_ADDR_AUTOINC);
1908 CSR_WRITE_4(sc, ACXREG_FWMEM_ADDR, offset);
1909 #endif
1910
1911 for (i = 0; i < fw_len; ++i) {
1912 #ifndef LOADFW_AUTO_INC
1913 CSR_WRITE_4(sc, ACXREG_FWMEM_ADDR, offset + (i * 4));
1914 #endif
1915 CSR_WRITE_4(sc, ACXREG_FWMEM_DATA, be32toh(fw[i]));
1916 }
1917
1918 /* Verify firmware */
1919 CSR_WRITE_4(sc, ACXREG_FWMEM_START, ACXRV_FWMEM_START_OP);
1920 #ifndef LOADFW_AUTO_INC
1921 CSR_WRITE_4(sc, ACXREG_FWMEM_CTRL, 0);
1922 #else
1923 CSR_WRITE_4(sc, ACXREG_FWMEM_CTRL, ACXRV_FWMEM_ADDR_AUTOINC);
1924 CSR_WRITE_4(sc, ACXREG_FWMEM_ADDR, offset);
1925 #endif
1926
1927 for (i = 0; i < fw_len; ++i) {
1928 uint32_t val;
1929
1930 #ifndef LOADFW_AUTO_INC
1931 CSR_WRITE_4(sc, ACXREG_FWMEM_ADDR, offset + (i * 4));
1932 #endif
1933 val = CSR_READ_4(sc, ACXREG_FWMEM_DATA);
1934 if (be32toh(fw[i]) != val) {
1935 if_printf(&sc->sc_ic.ic_if, "fireware mismatch "
1936 "fw %08x loaded %08x\n", fw[i], val);
1937 return ENXIO;
1938 }
1939 }
1940 return 0;
1941 }
1942
1943 static int
1944 acx_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
1945 {
1946 struct ifnet *ifp = &ic->ic_if;
1947 struct acx_softc *sc = ifp->if_softc;
1948 struct ieee80211_node *ni = NULL;
1949 struct ieee80211_channel *c = NULL;
1950 int error = 1, mode = 0;
1951
1952 ASSERT_SERIALIZED(ifp->if_serializer);
1953
1954 ieee80211_ratectl_newstate(ic, nstate);
1955 callout_stop(&sc->sc_scan_timer);
1956
1957 switch (nstate) {
1958 case IEEE80211_S_SCAN:
1959 acx_set_chan(sc, ic->ic_curchan);
1960 callout_reset(&sc->sc_scan_timer,
1961 (hz * sc->sc_scan_dwell) / 1000,
1962 acx_next_scan, sc);
1963 break;
1964 case IEEE80211_S_AUTH:
1965 if (ic->ic_opmode == IEEE80211_M_STA) {
1966 ni = ic->ic_bss;
1967 c = ni->ni_chan;
1968 mode = ACX_MODE_STA;
1969 }
1970 break;
1971 case IEEE80211_S_RUN:
1972 if (ic->ic_opmode == IEEE80211_M_IBSS ||
1973 ic->ic_opmode == IEEE80211_M_HOSTAP) {
1974 ni = ic->ic_bss;
1975 c = ni->ni_chan;
1976 if (ic->ic_opmode == IEEE80211_M_IBSS)
1977 mode = ACX_MODE_ADHOC;
1978 else
1979 mode = ACX_MODE_AP;
1980
1981 if (acx_set_beacon_tmplt(sc, ni) != 0) {
1982 if_printf(ifp, "set bescon template failed\n");
1983 goto back;
1984 }
1985 if (acx_set_probe_resp_tmplt(sc, ni) != 0) {
1986 if_printf(ifp, "set probe response template"
1987 " failed\n");
1988 goto back;
1989 }
1990 } else if (ic->ic_opmode == IEEE80211_M_MONITOR) {
1991 ni = ic->ic_bss;
1992 c = ic->ic_curchan;
1993 mode = ACX_MODE_STA;
1994 }
1995 break;
1996 default:
1997 break;
1998 }
1999
2000 if (ni != NULL) {
2001 KKASSERT(c != NULL);
2002
2003 if (acx_set_chan(sc, c) != 0)
2004 goto back;
2005
2006 if (acx_join_bss(sc, mode, ni, c) != 0) {
2007 if_printf(ifp, "join BSS failed\n");
2008 goto back;
2009 }
2010 }
2011
2012 error = 0;
2013 back:
2014 if (error) {
2015 /* XXX */
2016 nstate = IEEE80211_S_INIT;
2017 arg = -1;
2018 }
2019 return sc->sc_newstate(ic, nstate, arg);
2020 }
2021
2022 int
2023 acx_init_tmplt_ordered(struct acx_softc *sc)
2024 {
2025 #define INIT_TMPLT(name) \
2026 do { \
2027 if (acx_init_##name##_tmplt(sc) != 0) \
2028 return 1; \
2029 } while (0)
2030
2031 /*
2032 * NOTE:
2033 * Order of templates initialization:
2034 * 1) Probe request
2035 * 2) NULL data
2036 * 3) Beacon
2037 * 4) TIM
2038 * 5) Probe response
2039 * Above order is critical to get a correct memory map.
2040 */
2041 INIT_TMPLT(probe_req);
2042 INIT_TMPLT(null_data);
2043 INIT_TMPLT(beacon);
2044 INIT_TMPLT(tim);
2045 INIT_TMPLT(probe_resp);
2046
2047 #undef INIT_TMPLT
2048 return 0;
2049 }
2050
2051 static void
2052 acx_ring_dma_addr(void *arg, bus_dma_segment_t *seg, int nseg, int error)
2053 {
2054 *((uint32_t *)arg) = seg->ds_addr;
2055 }
2056
2057 static int
2058 acx_dma_alloc(struct acx_softc *sc)
2059 {
2060 struct acx_ring_data *rd = &sc->sc_ring_data;
2061 struct acx_buf_data *bd = &sc->sc_buf_data;
2062 int i, error;
2063
2064 /* Allocate DMA stuffs for RX descriptors */
2065 error = bus_dma_tag_create(NULL, PAGE_SIZE, 0,
2066 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
2067 NULL, NULL,
2068 ACX_RX_RING_SIZE, 1, ACX_RX_RING_SIZE,
2069 0, &rd->rx_ring_dma_tag);
2070 if (error) {
2071 if_printf(&sc->sc_ic.ic_if, "can't create rx ring dma tag\n");
2072 return error;
2073 }
2074
2075 error = bus_dmamem_alloc(rd->rx_ring_dma_tag, (void **)&rd->rx_ring,
2076 BUS_DMA_WAITOK | BUS_DMA_ZERO,
2077 &rd->rx_ring_dmamap);
2078 if (error) {
2079 if_printf(&sc->sc_ic.ic_if,
2080 "can't allocate rx ring dma memory\n");
2081 bus_dma_tag_destroy(rd->rx_ring_dma_tag);
2082 rd->rx_ring_dma_tag = NULL;
2083 return error;
2084 }
2085
2086 error = bus_dmamap_load(rd->rx_ring_dma_tag, rd->rx_ring_dmamap,
2087 rd->rx_ring, ACX_RX_RING_SIZE,
2088 acx_ring_dma_addr, &rd->rx_ring_paddr,
2089 BUS_DMA_WAITOK);
2090 if (error) {
2091 if_printf(&sc->sc_ic.ic_if, "can't get rx ring dma address\n");
2092 bus_dmamem_free(rd->rx_ring_dma_tag, rd->rx_ring,
2093 rd->rx_ring_dmamap);
2094 bus_dma_tag_destroy(rd->rx_ring_dma_tag);
2095 rd->rx_ring_dma_tag = NULL;
2096 return error;
2097 }
2098
2099 /* Allocate DMA stuffs for TX descriptors */
2100 error = bus_dma_tag_create(NULL, PAGE_SIZE, 0,
2101 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
2102 NULL, NULL,
2103 ACX_TX_RING_SIZE, 1, ACX_TX_RING_SIZE,
2104 0, &rd->tx_ring_dma_tag);
2105 if (error) {
2106 if_printf(&sc->sc_ic.ic_if, "can't create tx ring dma tag\n");
2107 return error;
2108 }
2109
2110 error = bus_dmamem_alloc(rd->tx_ring_dma_tag, (void **)&rd->tx_ring,
2111 BUS_DMA_WAITOK | BUS_DMA_ZERO,
2112 &rd->tx_ring_dmamap);
2113 if (error) {
2114 if_printf(&sc->sc_ic.ic_if,
2115 "can't allocate tx ring dma memory\n");
2116 bus_dma_tag_destroy(rd->tx_ring_dma_tag);
2117 rd->tx_ring_dma_tag = NULL;
2118 return error;
2119 }
2120
2121 error = bus_dmamap_load(rd->tx_ring_dma_tag, rd->tx_ring_dmamap,
2122 rd->tx_ring, ACX_TX_RING_SIZE,
2123 acx_ring_dma_addr, &rd->tx_ring_paddr,
2124 BUS_DMA_WAITOK);
2125 if (error) {
2126 if_printf(&sc->sc_ic.ic_if, "can't get tx ring dma address\n");
2127 bus_dmamem_free(rd->tx_ring_dma_tag, rd->tx_ring,
2128 rd->tx_ring_dmamap);
2129 bus_dma_tag_destroy(rd->tx_ring_dma_tag);
2130 rd->tx_ring_dma_tag = NULL;
2131 return error;
2132 }
2133
2134 /* Create DMA tag for RX/TX mbuf map */
2135 error = bus_dma_tag_create(NULL, 1, 0,
2136 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
2137 NULL, NULL,
2138 MCLBYTES, 1, MCLBYTES,
2139 0, &bd->mbuf_dma_tag);
2140 if (error) {
2141 if_printf(&sc->sc_ic.ic_if, "can't create mbuf dma tag\n");
2142 return error;
2143 }
2144
2145 /* Create a spare RX DMA map */
2146 error = bus_dmamap_create(bd->mbuf_dma_tag, 0, &bd->mbuf_tmp_dmamap);
2147 if (error) {
2148 if_printf(&sc->sc_ic.ic_if, "can't create tmp mbuf dma map\n");
2149 bus_dma_tag_destroy(bd->mbuf_dma_tag);
2150 bd->mbuf_dma_tag = NULL;
2151 return error;
2152 }
2153
2154 /* Create DMA map for RX mbufs */
2155 for (i = 0; i < ACX_RX_DESC_CNT; ++i) {
2156 error = bus_dmamap_create(bd->mbuf_dma_tag, 0,
2157 &bd->rx_buf[i].rb_mbuf_dmamap);
2158 if (error) {
2159 if_printf(&sc->sc_ic.ic_if, "can't create rx mbuf "
2160 "dma map (%d)\n", i);
2161 return error;
2162 }
2163 bd->rx_buf[i].rb_desc = &rd->rx_ring[i];
2164 }
2165
2166 /* Create DMA map for TX mbufs */
2167 for (i = 0; i < ACX_TX_DESC_CNT; ++i) {
2168 error = bus_dmamap_create(bd->mbuf_dma_tag, 0,
2169 &bd->tx_buf[i].tb_mbuf_dmamap);
2170 if (error) {
2171 if_printf(&sc->sc_ic.ic_if, "can't create tx mbuf "
2172 "dma map (%d)\n", i);
2173 return error;
2174 }
2175 bd->tx_buf[i].tb_desc1 = &rd->tx_ring[i * 2];
2176 bd->tx_buf[i].tb_desc2 = &rd->tx_ring[(i * 2) + 1];
2177 }
2178
2179 return 0;
2180 }
2181
2182 static void
2183 acx_dma_free(struct acx_softc *sc)
2184 {
2185 struct acx_ring_data *rd = &sc->sc_ring_data;
2186 struct acx_buf_data *bd = &sc->sc_buf_data;
2187 int i;
2188
2189 if (rd->rx_ring_dma_tag != NULL) {
2190 bus_dmamap_unload(rd->rx_ring_dma_tag, rd->rx_ring_dmamap);
2191 bus_dmamem_free(rd->rx_ring_dma_tag, rd->rx_ring,
2192 rd->rx_ring_dmamap);
2193 bus_dma_tag_destroy(rd->rx_ring_dma_tag);
2194 }
2195
2196 if (rd->tx_ring_dma_tag != NULL) {
2197 bus_dmamap_unload(rd->tx_ring_dma_tag, rd->tx_ring_dmamap);
2198 bus_dmamem_free(rd->tx_ring_dma_tag, rd->tx_ring,
2199 rd->tx_ring_dmamap);
2200 bus_dma_tag_destroy(rd->tx_ring_dma_tag);
2201 }
2202
2203 for (i = 0; i < ACX_RX_DESC_CNT; ++i) {
2204 if (bd->rx_buf[i].rb_desc != NULL) {
2205 if (bd->rx_buf[i].rb_mbuf != NULL) {
2206 bus_dmamap_unload(bd->mbuf_dma_tag,
2207 bd->rx_buf[i].rb_mbuf_dmamap);
2208 m_freem(bd->rx_buf[i].rb_mbuf);
2209 }
2210 bus_dmamap_destroy(bd->mbuf_dma_tag,
2211 bd->rx_buf[i].rb_mbuf_dmamap);
2212 }
2213 }
2214
2215 for (i = 0; i < ACX_TX_DESC_CNT; ++i) {
2216 if (bd->tx_buf[i].tb_desc1 != NULL) {
2217 if (bd->tx_buf[i].tb_mbuf != NULL) {
2218 bus_dmamap_unload(bd->mbuf_dma_tag,
2219 bd->tx_buf[i].tb_mbuf_dmamap);
2220 m_freem(bd->tx_buf[i].tb_mbuf);
2221 }
2222 bus_dmamap_destroy(bd->mbuf_dma_tag,
2223 bd->tx_buf[i].tb_mbuf_dmamap);
2224 }
2225 }
2226
2227 if (bd->mbuf_dma_tag != NULL) {
2228 bus_dmamap_destroy(bd->mbuf_dma_tag, bd->mbuf_tmp_dmamap);
2229 bus_dma_tag_destroy(bd->mbuf_dma_tag);
2230 }
2231 }
2232
2233 static int
2234 acx_init_tx_ring(struct acx_softc *sc)
2235 {
2236 struct acx_ring_data *rd;
2237 struct acx_buf_data *bd;
2238 uint32_t paddr;
2239 int i;
2240
2241 rd = &sc->sc_ring_data;
2242 paddr = rd->tx_ring_paddr;
2243 for (i = 0; i < (ACX_TX_DESC_CNT * 2) - 1; ++i) {
2244 paddr += sizeof(struct acx_host_desc);
2245
2246 rd->tx_ring[i].h_ctrl = htole16(DESC_CTRL_HOSTOWN);
2247
2248 if (i == (ACX_TX_DESC_CNT * 2) - 1)
2249 rd->tx_ring[i].h_next_desc = htole32(rd->tx_ring_paddr);
2250 else
2251 rd->tx_ring[i].h_next_desc = htole32(paddr);
2252 }
2253
2254 bus_dmamap_sync(rd->tx_ring_dma_tag, rd->tx_ring_dmamap,
2255 BUS_DMASYNC_PREWRITE);
2256
2257 bd = &sc->sc_buf_data;
2258 bd->tx_free_start = 0;
2259 bd->tx_used_start = 0;
2260 bd->tx_used_count = 0;
2261
2262 return 0;
2263 }
2264
2265 static int
2266 acx_init_rx_ring(struct acx_softc *sc)
2267 {
2268 struct acx_ring_data *rd;
2269 struct acx_buf_data *bd;
2270 uint32_t paddr;
2271 int i;
2272
2273 bd = &sc->sc_buf_data;
2274 rd = &sc->sc_ring_data;
2275 paddr = rd->rx_ring_paddr;
2276
2277 for (i = 0; i < ACX_RX_DESC_CNT; ++i) {
2278 int error;
2279
2280 paddr += sizeof(struct acx_host_desc);
2281
2282 error = acx_newbuf(sc, &bd->rx_buf[i], 1);
2283 if (error)
2284 return error;
2285
2286 if (i == ACX_RX_DESC_CNT - 1)
2287 rd->rx_ring[i].h_next_desc = htole32(rd->rx_ring_paddr);
2288 else
2289 rd->rx_ring[i].h_next_desc = htole32(paddr);
2290 }
2291
2292 bus_dmamap_sync(rd->rx_ring_dma_tag, rd->rx_ring_dmamap,
2293 BUS_DMASYNC_PREWRITE);
2294
2295 bd->rx_scan_start = 0;
2296 return 0;
2297 }
2298
2299 static void
2300 acx_buf_dma_addr(void *arg, bus_dma_segment_t *seg, int nseg,
2301 bus_size_t mapsz, int error)
2302 {
2303 if (error)
2304 return;
2305
2306 /* XXX */
2307 KASSERT(nseg == 1, ("too many RX dma segments\n"));
2308 *((uint32_t *)arg) = seg->ds_addr;
2309 }
2310
2311 static int
2312 acx_newbuf(struct acx_softc *sc, struct acx_rxbuf *rb, int wait)
2313 {
2314 struct acx_buf_data *bd;
2315 struct mbuf *m;
2316 bus_dmamap_t map;
2317 uint32_t paddr;
2318 int error;
2319
2320 bd = &sc->sc_buf_data;
2321
2322 m = m_getcl(wait ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
2323 if (m == NULL)
2324 return ENOBUFS;
2325
2326 m->m_len = m->m_pkthdr.len = MCLBYTES;
2327
2328 error = bus_dmamap_load_mbuf(bd->mbuf_dma_tag, bd->mbuf_tmp_dmamap,
2329 m, acx_buf_dma_addr, &paddr,
2330 wait ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT);
2331 if (error) {
2332 m_freem(m);
2333 if_printf(&sc->sc_ic.ic_if, "can't map rx mbuf %d\n", error);
2334 return error;
2335 }
2336
2337 /* Unload originally mapped mbuf */
2338 bus_dmamap_unload(bd->mbuf_dma_tag, rb->rb_mbuf_dmamap);
2339
2340 /* Swap this dmamap with tmp dmamap */
2341 map = rb->rb_mbuf_dmamap;
2342 rb->rb_mbuf_dmamap = bd->mbuf_tmp_dmamap;
2343 bd->mbuf_tmp_dmamap = map;
2344
2345 rb->rb_mbuf = m;
2346 rb->rb_desc->h_data_paddr = htole32(paddr);
2347 rb->rb_desc->h_data_len = htole16(m->m_len);
2348
2349 bus_dmamap_sync(bd->mbuf_dma_tag, rb->rb_mbuf_dmamap,
2350 BUS_DMASYNC_PREREAD);
2351 return 0;
2352 }
2353
2354 static int
2355 acx_encap(struct acx_softc *sc, struct acx_txbuf *txbuf, struct mbuf *m,
2356 struct ieee80211_node *ni)
2357 {
2358 struct acx_buf_data *bd = &sc->sc_buf_data;
2359 struct acx_ring_data *rd = &sc->sc_ring_data;
2360 uint32_t paddr;
2361 uint8_t ctrl, rate;
2362 int error;
2363
2364 KASSERT(txbuf->tb_mbuf == NULL, ("free TX buf has mbuf installed\n"));
2365 error = 0;
2366
2367 if (m->m_pkthdr.len > MCLBYTES) {
2368 if_printf(&sc->sc_ic.ic_if, "mbuf too big\n");
2369 error = E2BIG;
2370 goto back;
2371 } else if (m->m_pkthdr.len < ACX_FRAME_HDRLEN) {
2372 if_printf(&sc->sc_ic.ic_if, "mbuf too small\n");
2373 error = EINVAL;
2374 goto back;
2375 }
2376
2377 error = bus_dmamap_load_mbuf(bd->mbuf_dma_tag, txbuf->tb_mbuf_dmamap,
2378 m, acx_buf_dma_addr, &paddr,
2379 BUS_DMA_NOWAIT);
2380 if (error && error != EFBIG) {
2381 if_printf(&sc->sc_ic.ic_if, "can't map tx mbuf1 %d\n", error);
2382 goto back;
2383 }
2384
2385 if (error) { /* error == EFBIG */
2386 struct mbuf *m_new;
2387
2388 m_new = m_defrag(m, MB_DONTWAIT);
2389 if (m_new == NULL) {
2390 if_printf(&sc->sc_ic.ic_if, "can't defrag tx mbuf\n");
2391 error = ENOBUFS;
2392 goto back;
2393 } else {
2394 m = m_new;
2395 }
2396
2397 error = bus_dmamap_load_mbuf(bd->mbuf_dma_tag,
2398 txbuf->tb_mbuf_dmamap, m,
2399 acx_buf_dma_addr, &paddr,
2400 BUS_DMA_NOWAIT);
2401 if (error) {
2402 if_printf(&sc->sc_ic.ic_if, "can't map tx mbuf2 %d\n",
2403 error);
2404 goto back;
2405 }
2406 }
2407
2408 error = 0;
2409
2410 bus_dmamap_sync(bd->mbuf_dma_tag, txbuf->tb_mbuf_dmamap,
2411 BUS_DMASYNC_PREWRITE);
2412
2413 txbuf->tb_mbuf = m;
2414 txbuf->tb_node = ni;
2415
2416 /*
2417 * TX buffers are accessed in following way:
2418 * acx_fw_txdesc -> acx_host_desc -> buffer
2419 *
2420 * It is quite strange that acx also querys acx_host_desc next to
2421 * the one we have assigned to acx_fw_txdesc even if first one's
2422 * acx_host_desc.h_data_len == acx_fw_txdesc.f_tx_len
2423 *
2424 * So we allocate two acx_host_desc for one acx_fw_txdesc and
2425 * assign the first acx_host_desc to acx_fw_txdesc
2426 *
2427 * For acx111
2428 * host_desc1.h_data_len = buffer_len
2429 * host_desc2.h_data_len = buffer_len - mac_header_len
2430 *
2431 * For acx100
2432 * host_desc1.h_data_len = mac_header_len
2433 * host_desc2.h_data_len = buffer_len - mac_header_len
2434 */
2435
2436 txbuf->tb_desc1->h_data_paddr = htole32(paddr);
2437 txbuf->tb_desc2->h_data_paddr = htole32(paddr + ACX_FRAME_HDRLEN);
2438
2439 txbuf->tb_desc1->h_data_len =
2440 htole16(sc->chip_txdesc1_len ? sc->chip_txdesc1_len
2441 : m->m_pkthdr.len);
2442 txbuf->tb_desc2->h_data_len =
2443 htole16(m->m_pkthdr.len - ACX_FRAME_HDRLEN);
2444
2445 /*
2446 * NOTE:
2447 * We can't simply assign f_tx_ctrl, we will first read it back
2448 * and change it bit by bit
2449 */
2450 ctrl = FW_TXDESC_GETFIELD_1(sc, txbuf, f_tx_ctrl);
2451 ctrl |= sc->chip_fw_txdesc_ctrl; /* extra chip specific flags */
2452 ctrl &= ~(DESC_CTRL_HOSTOWN | DESC_CTRL_ACXDONE);
2453
2454 FW_TXDESC_SETFIELD_2(sc, txbuf, f_tx_len, m->m_pkthdr.len);
2455 FW_TXDESC_SETFIELD_1(sc, txbuf, f_tx_error, 0);
2456 FW_TXDESC_SETFIELD_1(sc, txbuf, f_tx_data_nretry, 0);
2457 FW_TXDESC_SETFIELD_1(sc, txbuf, f_tx_rts_nretry, 0);
2458 FW_TXDESC_SETFIELD_1(sc, txbuf, f_tx_rts_ok, 0);
2459 rate = sc->chip_set_fw_txdesc_rate(sc, txbuf, ni, m->m_pkthdr.len);
2460
2461 if (sc->sc_drvbpf != NULL) {
2462 struct ieee80211_frame_min *wh;
2463
2464 wh = mtod(m, struct ieee80211_frame_min *);
2465 sc->sc_tx_th.wt_flags = 0;
2466 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
2467 sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
2468 sc->sc_tx_th.wt_rate = rate;
2469
2470 bpf_ptap(sc->sc_drvbpf, m, &sc->sc_tx_th, sc->sc_tx_th_len);
2471 }
2472
2473 txbuf->tb_desc1->h_ctrl = 0;
2474 txbuf->tb_desc2->h_ctrl = 0;
2475 bus_dmamap_sync(rd->tx_ring_dma_tag, rd->tx_ring_dmamap,
2476 BUS_DMASYNC_PREWRITE);
2477
2478 FW_TXDESC_SETFIELD_1(sc, txbuf, f_tx_ctrl2, 0);
2479 FW_TXDESC_SETFIELD_1(sc, txbuf, f_tx_ctrl, ctrl);
2480
2481 /* Tell chip to inform us about TX completion */
2482 CSR_WRITE_2(sc, ACXREG_INTR_TRIG, ACXRV_TRIG_TX_FINI);
2483 back:
2484 if (error)
2485 m_freem(m);
2486 return error;
2487 }
2488
2489 static int
2490 acx_set_null_tmplt(struct acx_softc *sc)
2491 {
2492 struct acx_tmplt_null_data n;
2493 struct ieee80211_frame *f;
2494
2495 bzero(&n, sizeof(n));
2496
2497 f = &n.data;
2498 f->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA |
2499 IEEE80211_FC0_SUBTYPE_NODATA;
2500 IEEE80211_ADDR_COPY(f->i_addr1, etherbroadcastaddr);
2501 IEEE80211_ADDR_COPY(f->i_addr2, IF_LLADDR(&sc->sc_ic.ic_if));
2502 IEEE80211_ADDR_COPY(f->i_addr3, etherbroadcastaddr);
2503
2504 return _acx_set_null_data_tmplt(sc, &n, sizeof(n));
2505 }
2506
2507 static int
2508 acx_set_probe_req_tmplt(struct acx_softc *sc, const char *ssid, int ssid_len)
2509 {
2510 struct acx_tmplt_probe_req req;
2511 struct ieee80211_frame *f;
2512 uint8_t *v;
2513 int vlen;
2514
2515 bzero(&req, sizeof(req));
2516
2517 f = &req.data.u_data.f;
2518 f->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
2519 IEEE80211_FC0_SUBTYPE_PROBE_REQ;
2520 IEEE80211_ADDR_COPY(f->i_addr1, etherbroadcastaddr);
2521 IEEE80211_ADDR_COPY(f->i_addr2, IF_LLADDR(&sc->sc_ic.ic_if));
2522 IEEE80211_ADDR_COPY(f->i_addr3, etherbroadcastaddr);
2523
2524 v = req.data.u_data.var;
2525 v = ieee80211_add_ssid(v, ssid, ssid_len);
2526 v = ieee80211_add_rates(v, &sc->sc_ic.ic_sup_rates[sc->chip_phymode]);
2527 v = ieee80211_add_xrates(v, &sc->sc_ic.ic_sup_rates[sc->chip_phymode]);
2528 vlen = v - req.data.u_data.var;
2529
2530 return _acx_set_probe_req_tmplt(sc, &req,
2531 ACX_TMPLT_PROBE_REQ_SIZ(vlen));
2532 }
2533
2534 static int
2535 acx_set_probe_resp_tmplt(struct acx_softc *sc, struct ieee80211_node *ni)
2536 {
2537 struct ieee80211com *ic = &sc->sc_ic;
2538 struct acx_tmplt_probe_resp resp;
2539 struct ieee80211_frame *f;
2540 struct mbuf *m;
2541 int len;
2542
2543 m = ieee80211_probe_resp_alloc(ic, ni);
2544 if (m == NULL)
2545 return 1;
2546 DPRINTF((&ic->ic_if, "%s alloc probe resp size %d\n", __func__,
2547 m->m_pkthdr.len));
2548
2549 f = mtod(m, struct ieee80211_frame *);
2550 IEEE80211_ADDR_COPY(f->i_addr1, etherbroadcastaddr);
2551
2552 bzero(&resp, sizeof(resp));
2553 m_copydata(m, 0, m->m_pkthdr.len, (caddr_t)&resp.data);
2554 len = m->m_pkthdr.len + sizeof(resp.size);
2555 m_freem(m);
2556
2557 return _acx_set_probe_resp_tmplt(sc, &resp, len);
2558 }
2559
2560 static int
2561 acx_set_beacon_tmplt(struct acx_softc *sc, struct ieee80211_node *ni)
2562 {
2563 struct ieee80211com *ic = &sc->sc_ic;
2564 struct acx_tmplt_beacon beacon;
2565 struct acx_tmplt_tim tim;
2566 struct ieee80211_beacon_offsets bo;
2567 struct mbuf *m;
2568 int beacon_tmplt_len = 0, tim_tmplt_len = 0;
2569
2570 bzero(&bo, sizeof(bo));
2571 m = ieee80211_beacon_alloc(ic, ni, &bo);
2572 if (m == NULL)
2573 return 1;
2574 DPRINTF((&ic->ic_if, "%s alloc beacon size %d\n", __func__,
2575 m->m_pkthdr.len));
2576
2577 if (bo.bo_tim_len == 0) {
2578 beacon_tmplt_len = m->m_pkthdr.len;
2579 } else {
2580 beacon_tmplt_len = bo.bo_tim - mtod(m, uint8_t *);
2581 tim_tmplt_len = m->m_pkthdr.len - beacon_tmplt_len;
2582 }
2583
2584 bzero(&beacon, sizeof(beacon));
2585 bzero(&tim, sizeof(tim));
2586
2587 m_copydata(m, 0, beacon_tmplt_len, (caddr_t)&beacon.data);
2588 if (tim_tmplt_len != 0) {
2589 m_copydata(m, beacon_tmplt_len, tim_tmplt_len,
2590 (caddr_t)&tim.data);
2591 }
2592 m_freem(m);
2593
2594 beacon_tmplt_len += sizeof(beacon.size);
2595 if (_acx_set_beacon_tmplt(sc, &beacon, beacon_tmplt_len) != 0)
2596 return 1;
2597
2598 if (tim_tmplt_len != 0) {
2599 tim_tmplt_len += sizeof(tim.size);
2600 if (_acx_set_tim_tmplt(sc, &tim, tim_tmplt_len) != 0)
2601 return 1;
2602 }
2603 return 0;
2604 }
2605
2606 static int
2607 acx_sysctl_msdu_lifetime(SYSCTL_HANDLER_ARGS)
2608 {
2609 struct acx_softc *sc = arg1;
2610 struct ifnet *ifp = &sc->sc_ic.ic_if;
2611 int error = 0, v;
2612
2613 lwkt_serialize_enter(ifp->if_serializer);
2614
2615 v = sc->sc_msdu_lifetime;
2616 error = sysctl_handle_int(oidp, &v, 0, req);
2617 if (error || req->newptr == NULL)
2618 goto back;
2619 if (v <= 0) {
2620 error = EINVAL;
2621 goto back;
2622 }
2623
2624 if (sc->sc_flags & ACX_FLAG_FW_LOADED) {
2625 struct acx_conf_msdu_lifetime msdu_lifetime;
2626
2627 msdu_lifetime.lifetime = htole32(v);
2628 if (acx_set_msdu_lifetime_conf(sc, &msdu_lifetime) != 0) {
2629 if_printf(&sc->sc_ic.ic_if,
2630 "can't set MSDU lifetime\n");
2631 error = ENXIO;
2632 goto back;
2633 }
2634 }
2635 sc->sc_msdu_lifetime = v;
2636 back:
2637 lwkt_serialize_exit(ifp->if_serializer);
2638 return error;
2639 }
2640
2641 static int
2642 acx_sysctl_free_firmware(SYSCTL_HANDLER_ARGS)
2643 {
2644 struct acx_softc *sc = arg1;
2645 struct ifnet *ifp = &sc->sc_ic.ic_if;
2646 int error = 0, v;
2647
2648 lwkt_serialize_enter(ifp->if_serializer);
2649
2650 v = 0;
2651 error = sysctl_handle_int(oidp, &v, 0, req);
2652 if (error || req->newptr == NULL)
2653 goto back;
2654 if (v == 0) /* Do nothing */
2655 goto back;
2656
2657 acx_free_firmware(sc);
2658 back:
2659 lwkt_serialize_exit(ifp->if_serializer);
2660 return error;
2661 }
2662
2663 static int
2664 acx_media_change(struct ifnet *ifp)
2665 {
2666 int error;
2667
2668 error = ieee80211_media_change(ifp);
2669 if (error != ENETRESET)
2670 return error;
2671
2672 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING))
2673 acx_init(ifp->if_softc);
2674 return 0;
2675 }
2676
2677 static int
2678 acx_rx_config(struct acx_softc *sc, int promisc)
2679 {
2680 struct acx_conf_rxopt rx_opt;
2681 struct ieee80211com *ic = &sc->sc_ic;
2682
2683 /*
2684 * What we want to receive and how to receive
2685 */
2686
2687 /* Common for all operational modes */
2688 rx_opt.opt1 = RXOPT1_INCL_RXBUF_HDR;
2689 rx_opt.opt2 = RXOPT2_RECV_ASSOC_REQ |
2690 RXOPT2_RECV_AUTH |
2691 RXOPT2_RECV_BEACON |
2692 RXOPT2_RECV_CF |
2693 RXOPT2_RECV_CTRL |
2694 RXOPT2_RECV_DATA |
2695 RXOPT2_RECV_MGMT |
2696 RXOPT2_RECV_PROBE_REQ |
2697 RXOPT2_RECV_PROBE_RESP |
2698 RXOPT2_RECV_OTHER;
2699
2700 if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2701 rx_opt.opt1 |= RXOPT1_PROMISC;
2702 rx_opt.opt2 |= RXOPT2_RECV_BROKEN | RXOPT2_RECV_ACK;
2703 } else {
2704 rx_opt.opt1 |= promisc ? RXOPT1_PROMISC : RXOPT1_FILT_FDEST;
2705 }
2706
2707 if (acx_set_rxopt_conf(sc, &rx_opt) != 0) {
2708 if_printf(&sc->sc_ic.ic_if, "can't config RX\n");
2709 return ENXIO;
2710 }
2711 return 0;
2712 }
2713
2714 static int
2715 acx_set_chan(struct acx_softc *sc, struct ieee80211_channel *c)
2716 {
2717 struct ieee80211com *ic = &sc->sc_ic;
2718 uint16_t flags;
2719 uint8_t chan;
2720
2721 chan = ieee80211_chan2ieee(ic, c);
2722 DPRINTF((&ic->ic_if, "to chan %u\n", chan));
2723 if (acx_enable_txchan(sc, chan) != 0) {
2724 if_printf(&ic->ic_if, "enable TX on channel %d failed\n", chan);
2725 return EIO;
2726 }
2727 if (acx_enable_rxchan(sc, chan) != 0) {
2728 if_printf(&ic->ic_if, "enable RX on channel %d failed\n", chan);
2729 return EIO;
2730 }
2731
2732 if (IEEE80211_IS_CHAN_G(c))
2733 flags = IEEE80211_CHAN_G;
2734 else
2735 flags = IEEE80211_CHAN_B;
2736
2737 sc->sc_tx_th.wt_chan_freq = sc->sc_rx_th.wr_chan_freq =
2738 htole16(c->ic_freq);
2739 sc->sc_tx_th.wt_chan_flags = sc->sc_rx_th.wr_chan_flags =
2740 htole16(flags);
2741 return 0;
2742 }
Port diff from OpenBSD to DragonFly