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[deliverable/linux.git] / drivers / staging / brcm80211 / brcmfmac / dhd_linux.c
1 /*
2 * Copyright (c) 2010 Broadcom Corporation
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #ifdef CONFIG_WIFI_CONTROL_FUNC
18 #include <linux/platform_device.h>
19 #endif
20 #include <linux/init.h>
21 #include <linux/kernel.h>
22 #include <linux/kthread.h>
23 #include <linux/slab.h>
24 #include <linux/skbuff.h>
25 #include <linux/netdevice.h>
26 #include <linux/etherdevice.h>
27 #include <linux/mmc/sdio_func.h>
28 #include <linux/random.h>
29 #include <linux/spinlock.h>
30 #include <linux/ethtool.h>
31 #include <linux/fcntl.h>
32 #include <linux/fs.h>
33 #include <linux/uaccess.h>
34 #include <bcmdefs.h>
35 #include <osl.h>
36 #include <bcmutils.h>
37 #include <bcmendian.h>
38
39 #include <proto/ethernet.h>
40 #include <dngl_stats.h>
41 #include <dhd.h>
42 #include <dhd_bus.h>
43 #include <dhd_proto.h>
44 #include <dhd_dbg.h>
45
46 #include <wl_cfg80211.h>
47
48 #define EPI_VERSION_STR "4.218.248.5"
49
50 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
51 #include <linux/wifi_tiwlan.h>
52
53 struct semaphore wifi_control_sem;
54
55 struct dhd_bus *g_bus;
56
57 static struct wifi_platform_data *wifi_control_data;
58 static struct resource *wifi_irqres;
59
60 int wifi_get_irq_number(unsigned long *irq_flags_ptr)
61 {
62 if (wifi_irqres) {
63 *irq_flags_ptr = wifi_irqres->flags & IRQF_TRIGGER_MASK;
64 return (int)wifi_irqres->start;
65 }
66 #ifdef CUSTOM_OOB_GPIO_NUM
67 return CUSTOM_OOB_GPIO_NUM;
68 #else
69 return -1;
70 #endif
71 }
72
73 int wifi_set_carddetect(int on)
74 {
75 printk(KERN_ERR "%s = %d\n", __func__, on);
76 if (wifi_control_data && wifi_control_data->set_carddetect)
77 wifi_control_data->set_carddetect(on);
78 return 0;
79 }
80
81 int wifi_set_power(int on, unsigned long msec)
82 {
83 printk(KERN_ERR "%s = %d\n", __func__, on);
84 if (wifi_control_data && wifi_control_data->set_power)
85 wifi_control_data->set_power(on);
86 if (msec)
87 mdelay(msec);
88 return 0;
89 }
90
91 int wifi_set_reset(int on, unsigned long msec)
92 {
93 printk(KERN_ERR "%s = %d\n", __func__, on);
94 if (wifi_control_data && wifi_control_data->set_reset)
95 wifi_control_data->set_reset(on);
96 if (msec)
97 mdelay(msec);
98 return 0;
99 }
100
101 static int wifi_probe(struct platform_device *pdev)
102 {
103 struct wifi_platform_data *wifi_ctrl =
104 (struct wifi_platform_data *)(pdev->dev.platform_data);
105
106 printk(KERN_ERR "## %s\n", __func__);
107 wifi_irqres =
108 platform_get_resource_byname(pdev, IORESOURCE_IRQ,
109 "bcm4329_wlan_irq");
110 wifi_control_data = wifi_ctrl;
111
112 wifi_set_power(1, 0); /* Power On */
113 wifi_set_carddetect(1); /* CardDetect (0->1) */
114
115 up(&wifi_control_sem);
116 return 0;
117 }
118
119 static int wifi_remove(struct platform_device *pdev)
120 {
121 struct wifi_platform_data *wifi_ctrl =
122 (struct wifi_platform_data *)(pdev->dev.platform_data);
123
124 printk(KERN_ERR "## %s\n", __func__);
125 wifi_control_data = wifi_ctrl;
126
127 wifi_set_carddetect(0); /* CardDetect (1->0) */
128 wifi_set_power(0, 0); /* Power Off */
129
130 up(&wifi_control_sem);
131 return 0;
132 }
133
134 static int wifi_suspend(struct platform_device *pdev, pm_message_t state)
135 {
136 DHD_TRACE(("##> %s\n", __func__));
137 return 0;
138 }
139
140 static int wifi_resume(struct platform_device *pdev)
141 {
142 DHD_TRACE(("##> %s\n", __func__));
143 return 0;
144 }
145
146 static struct platform_driver wifi_device = {
147 .probe = wifi_probe,
148 .remove = wifi_remove,
149 .suspend = wifi_suspend,
150 .resume = wifi_resume,
151 .driver = {
152 .name = "bcm4329_wlan",
153 }
154 };
155
156 int wifi_add_dev(void)
157 {
158 DHD_TRACE(("## Calling platform_driver_register\n"));
159 return platform_driver_register(&wifi_device);
160 }
161
162 void wifi_del_dev(void)
163 {
164 DHD_TRACE(("## Unregister platform_driver_register\n"));
165 platform_driver_unregister(&wifi_device);
166 }
167 #endif /* defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC) */
168
169 #if defined(CONFIG_PM_SLEEP)
170 #include <linux/suspend.h>
171 volatile bool dhd_mmc_suspend = false;
172 DECLARE_WAIT_QUEUE_HEAD(dhd_dpc_wait);
173 #endif /* defined(CONFIG_PM_SLEEP) */
174
175 #if defined(OOB_INTR_ONLY)
176 extern void dhd_enable_oob_intr(struct dhd_bus *bus, bool enable);
177 #endif /* defined(OOB_INTR_ONLY) */
178
179 MODULE_AUTHOR("Broadcom Corporation");
180 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac driver.");
181 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac cards");
182 MODULE_LICENSE("Dual BSD/GPL");
183
184 #define DRV_MODULE_NAME "brcmfmac"
185
186 /* Linux wireless extension support */
187 #if defined(CONFIG_WIRELESS_EXT)
188 #include <wl_iw.h>
189 extern wl_iw_extra_params_t g_wl_iw_params;
190 #endif /* defined(CONFIG_WIRELESS_EXT) */
191
192 #if defined(CONFIG_HAS_EARLYSUSPEND)
193 #include <linux/earlysuspend.h>
194 extern int dhdcdc_set_ioctl(dhd_pub_t *dhd, int ifidx, uint cmd, void *buf,
195 uint len);
196 #endif /* defined(CONFIG_HAS_EARLYSUSPEND) */
197
198 #ifdef PKT_FILTER_SUPPORT
199 extern void dhd_pktfilter_offload_set(dhd_pub_t *dhd, char *arg);
200 extern void dhd_pktfilter_offload_enable(dhd_pub_t *dhd, char *arg, int enable,
201 int master_mode);
202 #endif
203
204 /* Interface control information */
205 typedef struct dhd_if {
206 struct dhd_info *info; /* back pointer to dhd_info */
207 /* OS/stack specifics */
208 struct net_device *net;
209 struct net_device_stats stats;
210 int idx; /* iface idx in dongle */
211 int state; /* interface state */
212 uint subunit; /* subunit */
213 u8 mac_addr[ETHER_ADDR_LEN]; /* assigned MAC address */
214 bool attached; /* Delayed attachment when unset */
215 bool txflowcontrol; /* Per interface flow control indicator */
216 char name[IFNAMSIZ]; /* linux interface name */
217 } dhd_if_t;
218
219 /* Local private structure (extension of pub) */
220 typedef struct dhd_info {
221 #if defined(CONFIG_WIRELESS_EXT)
222 wl_iw_t iw; /* wireless extensions state (must be first) */
223 #endif /* defined(CONFIG_WIRELESS_EXT) */
224
225 dhd_pub_t pub;
226
227 /* OS/stack specifics */
228 dhd_if_t *iflist[DHD_MAX_IFS];
229
230 struct semaphore proto_sem;
231 wait_queue_head_t ioctl_resp_wait;
232 struct timer_list timer;
233 bool wd_timer_valid;
234 struct tasklet_struct tasklet;
235 spinlock_t sdlock;
236 spinlock_t txqlock;
237 /* Thread based operation */
238 bool threads_only;
239 struct semaphore sdsem;
240 struct task_struct *watchdog_tsk;
241 struct semaphore watchdog_sem;
242 struct task_struct *dpc_tsk;
243 struct semaphore dpc_sem;
244
245 /* Thread to issue ioctl for multicast */
246 struct task_struct *sysioc_tsk;
247 struct semaphore sysioc_sem;
248 bool set_multicast;
249 bool set_macaddress;
250 struct ether_addr macvalue;
251 wait_queue_head_t ctrl_wait;
252 atomic_t pend_8021x_cnt;
253
254 #ifdef CONFIG_HAS_EARLYSUSPEND
255 struct early_suspend early_suspend;
256 #endif /* CONFIG_HAS_EARLYSUSPEND */
257 } dhd_info_t;
258
259 /* Definitions to provide path to the firmware and nvram
260 * example nvram_path[MOD_PARAM_PATHLEN]="/projects/wlan/nvram.txt"
261 */
262 char firmware_path[MOD_PARAM_PATHLEN];
263 char nvram_path[MOD_PARAM_PATHLEN];
264
265 /* load firmware and/or nvram values from the filesystem */
266 module_param_string(firmware_path, firmware_path, MOD_PARAM_PATHLEN, 0);
267 module_param_string(nvram_path, nvram_path, MOD_PARAM_PATHLEN, 0);
268
269 /* Error bits */
270 module_param(dhd_msg_level, int, 0);
271
272 /* Spawn a thread for system ioctls (set mac, set mcast) */
273 uint dhd_sysioc = true;
274 module_param(dhd_sysioc, uint, 0);
275
276 /* Watchdog interval */
277 uint dhd_watchdog_ms = 10;
278 module_param(dhd_watchdog_ms, uint, 0);
279
280 #ifdef DHD_DEBUG
281 /* Console poll interval */
282 uint dhd_console_ms;
283 module_param(dhd_console_ms, uint, 0);
284 #endif /* DHD_DEBUG */
285
286 /* ARP offload agent mode : Enable ARP Host Auto-Reply
287 and ARP Peer Auto-Reply */
288 uint dhd_arp_mode = 0xb;
289 module_param(dhd_arp_mode, uint, 0);
290
291 /* ARP offload enable */
292 uint dhd_arp_enable = true;
293 module_param(dhd_arp_enable, uint, 0);
294
295 /* Global Pkt filter enable control */
296 uint dhd_pkt_filter_enable = true;
297 module_param(dhd_pkt_filter_enable, uint, 0);
298
299 /* Pkt filter init setup */
300 uint dhd_pkt_filter_init;
301 module_param(dhd_pkt_filter_init, uint, 0);
302
303 /* Pkt filter mode control */
304 uint dhd_master_mode = true;
305 module_param(dhd_master_mode, uint, 1);
306
307 /* Watchdog thread priority, -1 to use kernel timer */
308 int dhd_watchdog_prio = 97;
309 module_param(dhd_watchdog_prio, int, 0);
310
311 /* DPC thread priority, -1 to use tasklet */
312 int dhd_dpc_prio = 98;
313 module_param(dhd_dpc_prio, int, 0);
314
315 /* DPC thread priority, -1 to use tasklet */
316 extern int dhd_dongle_memsize;
317 module_param(dhd_dongle_memsize, int, 0);
318
319 /* Contorl fw roaming */
320 #ifdef CUSTOMER_HW2
321 uint dhd_roam;
322 #else
323 uint dhd_roam = 1;
324 #endif
325
326 /* Control radio state */
327 uint dhd_radio_up = 1;
328
329 /* Network inteface name */
330 char iface_name[IFNAMSIZ];
331 module_param_string(iface_name, iface_name, IFNAMSIZ, 0);
332
333 /* The following are specific to the SDIO dongle */
334
335 /* IOCTL response timeout */
336 int dhd_ioctl_timeout_msec = IOCTL_RESP_TIMEOUT;
337
338 /* Idle timeout for backplane clock */
339 int dhd_idletime = DHD_IDLETIME_TICKS;
340 module_param(dhd_idletime, int, 0);
341
342 /* Use polling */
343 uint dhd_poll = false;
344 module_param(dhd_poll, uint, 0);
345
346 /* Use cfg80211 */
347 uint dhd_cfg80211 = true;
348 module_param(dhd_cfg80211, uint, 0);
349
350 /* Use interrupts */
351 uint dhd_intr = true;
352 module_param(dhd_intr, uint, 0);
353
354 /* SDIO Drive Strength (in milliamps) */
355 uint dhd_sdiod_drive_strength = 6;
356 module_param(dhd_sdiod_drive_strength, uint, 0);
357
358 /* Tx/Rx bounds */
359 extern uint dhd_txbound;
360 extern uint dhd_rxbound;
361 module_param(dhd_txbound, uint, 0);
362 module_param(dhd_rxbound, uint, 0);
363
364 /* Deferred transmits */
365 extern uint dhd_deferred_tx;
366 module_param(dhd_deferred_tx, uint, 0);
367
368 #ifdef SDTEST
369 /* Echo packet generator (pkts/s) */
370 uint dhd_pktgen;
371 module_param(dhd_pktgen, uint, 0);
372
373 /* Echo packet len (0 => sawtooth, max 2040) */
374 uint dhd_pktgen_len;
375 module_param(dhd_pktgen_len, uint, 0);
376 #endif
377
378 #define FAVORITE_WIFI_CP (!!dhd_cfg80211)
379 #define IS_CFG80211_FAVORITE() FAVORITE_WIFI_CP
380 #define DBG_CFG80211_GET() ((dhd_cfg80211 & WL_DBG_MASK) >> 1)
381 #define NO_FW_REQ() (dhd_cfg80211 & 0x80)
382
383 /* Version string to report */
384 #ifdef DHD_DEBUG
385 #define DHD_COMPILED "\nCompiled in " SRCBASE
386 #else
387 #define DHD_COMPILED
388 #endif
389
390 static char dhd_version[] = "Dongle Host Driver, version " EPI_VERSION_STR
391 #ifdef DHD_DEBUG
392 "\nCompiled in " " on " __DATE__ " at " __TIME__
393 #endif
394 ;
395
396 #if defined(CONFIG_WIRELESS_EXT)
397 struct iw_statistics *dhd_get_wireless_stats(struct net_device *dev);
398 #endif /* defined(CONFIG_WIRELESS_EXT) */
399
400 static void dhd_dpc(unsigned long data);
401 /* forward decl */
402 extern int dhd_wait_pend8021x(struct net_device *dev);
403
404 #ifdef TOE
405 #ifndef BDC
406 #error TOE requires BDC
407 #endif /* !BDC */
408 static int dhd_toe_get(dhd_info_t *dhd, int idx, u32 *toe_ol);
409 static int dhd_toe_set(dhd_info_t *dhd, int idx, u32 toe_ol);
410 #endif /* TOE */
411
412 static int dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
413 wl_event_msg_t *event_ptr, void **data_ptr);
414
415 #if defined(CONFIG_PM_SLEEP)
416 static int dhd_sleep_pm_callback(struct notifier_block *nfb,
417 unsigned long action, void *ignored)
418 {
419 switch (action) {
420 case PM_HIBERNATION_PREPARE:
421 case PM_SUSPEND_PREPARE:
422 dhd_mmc_suspend = true;
423 return NOTIFY_OK;
424 case PM_POST_HIBERNATION:
425 case PM_POST_SUSPEND:
426 dhd_mmc_suspend = false;
427 return NOTIFY_OK;
428 }
429 return 0;
430 }
431
432 static struct notifier_block dhd_sleep_pm_notifier = {
433 .notifier_call = dhd_sleep_pm_callback,
434 .priority = 0
435 };
436
437 extern int register_pm_notifier(struct notifier_block *nb);
438 extern int unregister_pm_notifier(struct notifier_block *nb);
439 #endif /* defined(CONFIG_PM_SLEEP) */
440 /* && defined(DHD_GPL) */
441 static void dhd_set_packet_filter(int value, dhd_pub_t *dhd)
442 {
443 #ifdef PKT_FILTER_SUPPORT
444 DHD_TRACE(("%s: %d\n", __func__, value));
445 /* 1 - Enable packet filter, only allow unicast packet to send up */
446 /* 0 - Disable packet filter */
447 if (dhd_pkt_filter_enable) {
448 int i;
449
450 for (i = 0; i < dhd->pktfilter_count; i++) {
451 dhd_pktfilter_offload_set(dhd, dhd->pktfilter[i]);
452 dhd_pktfilter_offload_enable(dhd, dhd->pktfilter[i],
453 value, dhd_master_mode);
454 }
455 }
456 #endif
457 }
458
459 #if defined(CONFIG_HAS_EARLYSUSPEND)
460 static int dhd_set_suspend(int value, dhd_pub_t *dhd)
461 {
462 int power_mode = PM_MAX;
463 /* wl_pkt_filter_enable_t enable_parm; */
464 char iovbuf[32];
465 int bcn_li_dtim = 3;
466 #ifdef CUSTOMER_HW2
467 uint roamvar = 1;
468 #endif /* CUSTOMER_HW2 */
469
470 DHD_TRACE(("%s: enter, value = %d in_suspend=%d\n",
471 __func__, value, dhd->in_suspend));
472
473 if (dhd && dhd->up) {
474 if (value && dhd->in_suspend) {
475
476 /* Kernel suspended */
477 DHD_TRACE(("%s: force extra Suspend setting\n",
478 __func__));
479
480 dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
481 (char *)&power_mode,
482 sizeof(power_mode));
483
484 /* Enable packet filter, only allow unicast
485 packet to send up */
486 dhd_set_packet_filter(1, dhd);
487
488 /* if dtim skip setup as default force it
489 * to wake each thrid dtim
490 * for better power saving.
491 * Note that side effect is chance to miss BC/MC
492 * packet
493 */
494 if ((dhd->dtim_skip == 0) || (dhd->dtim_skip == 1))
495 bcn_li_dtim = 3;
496 else
497 bcn_li_dtim = dhd->dtim_skip;
498 bcm_mkiovar("bcn_li_dtim", (char *)&bcn_li_dtim,
499 4, iovbuf, sizeof(iovbuf));
500 dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
501 sizeof(iovbuf));
502 #ifdef CUSTOMER_HW2
503 /* Disable build-in roaming to allowed \
504 * supplicant to take of romaing
505 */
506 bcm_mkiovar("roam_off", (char *)&roamvar, 4,
507 iovbuf, sizeof(iovbuf));
508 dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
509 sizeof(iovbuf));
510 #endif /* CUSTOMER_HW2 */
511 } else {
512
513 /* Kernel resumed */
514 DHD_TRACE(("%s: Remove extra suspend setting\n",
515 __func__));
516
517 power_mode = PM_FAST;
518 dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
519 (char *)&power_mode,
520 sizeof(power_mode));
521
522 /* disable pkt filter */
523 dhd_set_packet_filter(0, dhd);
524
525 /* restore pre-suspend setting for dtim_skip */
526 bcm_mkiovar("bcn_li_dtim", (char *)&dhd->dtim_skip,
527 4, iovbuf, sizeof(iovbuf));
528
529 dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
530 sizeof(iovbuf));
531 #ifdef CUSTOMER_HW2
532 roamvar = 0;
533 bcm_mkiovar("roam_off", (char *)&roamvar, 4, iovbuf,
534 sizeof(iovbuf));
535 dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
536 sizeof(iovbuf));
537 #endif /* CUSTOMER_HW2 */
538 }
539 }
540
541 return 0;
542 }
543
544 static void dhd_suspend_resume_helper(struct dhd_info *dhd, int val)
545 {
546 dhd_pub_t *dhdp = &dhd->pub;
547
548 dhd_os_proto_block(dhdp);
549 /* Set flag when early suspend was called */
550 dhdp->in_suspend = val;
551 if (!dhdp->suspend_disable_flag)
552 dhd_set_suspend(val, dhdp);
553 dhd_os_proto_unblock(dhdp);
554 }
555
556 static void dhd_early_suspend(struct early_suspend *h)
557 {
558 struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
559
560 DHD_TRACE(("%s: enter\n", __func__));
561
562 if (dhd)
563 dhd_suspend_resume_helper(dhd, 1);
564
565 }
566
567 static void dhd_late_resume(struct early_suspend *h)
568 {
569 struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
570
571 DHD_TRACE(("%s: enter\n", __func__));
572
573 if (dhd)
574 dhd_suspend_resume_helper(dhd, 0);
575 }
576 #endif /* defined(CONFIG_HAS_EARLYSUSPEND) */
577
578 /*
579 * Generalized timeout mechanism. Uses spin sleep with exponential
580 * back-off until
581 * the sleep time reaches one jiffy, then switches over to task delay. Usage:
582 *
583 * dhd_timeout_start(&tmo, usec);
584 * while (!dhd_timeout_expired(&tmo))
585 * if (poll_something())
586 * break;
587 * if (dhd_timeout_expired(&tmo))
588 * fatal();
589 */
590
591 void dhd_timeout_start(dhd_timeout_t *tmo, uint usec)
592 {
593 tmo->limit = usec;
594 tmo->increment = 0;
595 tmo->elapsed = 0;
596 tmo->tick = 1000000 / HZ;
597 }
598
599 int dhd_timeout_expired(dhd_timeout_t *tmo)
600 {
601 /* Does nothing the first call */
602 if (tmo->increment == 0) {
603 tmo->increment = 1;
604 return 0;
605 }
606
607 if (tmo->elapsed >= tmo->limit)
608 return 1;
609
610 /* Add the delay that's about to take place */
611 tmo->elapsed += tmo->increment;
612
613 if (tmo->increment < tmo->tick) {
614 udelay(tmo->increment);
615 tmo->increment *= 2;
616 if (tmo->increment > tmo->tick)
617 tmo->increment = tmo->tick;
618 } else {
619 wait_queue_head_t delay_wait;
620 DECLARE_WAITQUEUE(wait, current);
621 int pending;
622 init_waitqueue_head(&delay_wait);
623 add_wait_queue(&delay_wait, &wait);
624 set_current_state(TASK_INTERRUPTIBLE);
625 schedule_timeout(1);
626 pending = signal_pending(current);
627 remove_wait_queue(&delay_wait, &wait);
628 set_current_state(TASK_RUNNING);
629 if (pending)
630 return 1; /* Interrupted */
631 }
632
633 return 0;
634 }
635
636 static int dhd_net2idx(dhd_info_t *dhd, struct net_device *net)
637 {
638 int i = 0;
639
640 ASSERT(dhd);
641 while (i < DHD_MAX_IFS) {
642 if (dhd->iflist[i] && (dhd->iflist[i]->net == net))
643 return i;
644 i++;
645 }
646
647 return DHD_BAD_IF;
648 }
649
650 int dhd_ifname2idx(dhd_info_t *dhd, char *name)
651 {
652 int i = DHD_MAX_IFS;
653
654 ASSERT(dhd);
655
656 if (name == NULL || *name == '\0')
657 return 0;
658
659 while (--i > 0)
660 if (dhd->iflist[i]
661 && !strncmp(dhd->iflist[i]->name, name, IFNAMSIZ))
662 break;
663
664 DHD_TRACE(("%s: return idx %d for \"%s\"\n", __func__, i, name));
665
666 return i; /* default - the primary interface */
667 }
668
669 char *dhd_ifname(dhd_pub_t *dhdp, int ifidx)
670 {
671 dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
672
673 ASSERT(dhd);
674
675 if (ifidx < 0 || ifidx >= DHD_MAX_IFS) {
676 DHD_ERROR(("%s: ifidx %d out of range\n", __func__, ifidx));
677 return "<if_bad>";
678 }
679
680 if (dhd->iflist[ifidx] == NULL) {
681 DHD_ERROR(("%s: null i/f %d\n", __func__, ifidx));
682 return "<if_null>";
683 }
684
685 if (dhd->iflist[ifidx]->net)
686 return dhd->iflist[ifidx]->net->name;
687
688 return "<if_none>";
689 }
690
691 static void _dhd_set_multicast_list(dhd_info_t *dhd, int ifidx)
692 {
693 struct net_device *dev;
694 struct netdev_hw_addr *ha;
695 u32 allmulti, cnt;
696
697 wl_ioctl_t ioc;
698 char *buf, *bufp;
699 uint buflen;
700 int ret;
701
702 ASSERT(dhd && dhd->iflist[ifidx]);
703 dev = dhd->iflist[ifidx]->net;
704 cnt = netdev_mc_count(dev);
705
706 /* Determine initial value of allmulti flag */
707 allmulti = (dev->flags & IFF_ALLMULTI) ? true : false;
708
709 /* Send down the multicast list first. */
710
711 buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETHER_ADDR_LEN);
712 bufp = buf = kmalloc(buflen, GFP_ATOMIC);
713 if (!bufp) {
714 DHD_ERROR(("%s: out of memory for mcast_list, cnt %d\n",
715 dhd_ifname(&dhd->pub, ifidx), cnt));
716 return;
717 }
718
719 strcpy(bufp, "mcast_list");
720 bufp += strlen("mcast_list") + 1;
721
722 cnt = htol32(cnt);
723 memcpy(bufp, &cnt, sizeof(cnt));
724 bufp += sizeof(cnt);
725
726 netdev_for_each_mc_addr(ha, dev) {
727 if (!cnt)
728 break;
729 memcpy(bufp, ha->addr, ETHER_ADDR_LEN);
730 bufp += ETHER_ADDR_LEN;
731 cnt--;
732 }
733
734 memset(&ioc, 0, sizeof(ioc));
735 ioc.cmd = WLC_SET_VAR;
736 ioc.buf = buf;
737 ioc.len = buflen;
738 ioc.set = true;
739
740 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
741 if (ret < 0) {
742 DHD_ERROR(("%s: set mcast_list failed, cnt %d\n",
743 dhd_ifname(&dhd->pub, ifidx), cnt));
744 allmulti = cnt ? true : allmulti;
745 }
746
747 kfree(buf);
748
749 /* Now send the allmulti setting. This is based on the setting in the
750 * net_device flags, but might be modified above to be turned on if we
751 * were trying to set some addresses and dongle rejected it...
752 */
753
754 buflen = sizeof("allmulti") + sizeof(allmulti);
755 buf = kmalloc(buflen, GFP_ATOMIC);
756 if (!buf) {
757 DHD_ERROR(("%s: out of memory for allmulti\n",
758 dhd_ifname(&dhd->pub, ifidx)));
759 return;
760 }
761 allmulti = htol32(allmulti);
762
763 if (!bcm_mkiovar
764 ("allmulti", (void *)&allmulti, sizeof(allmulti), buf, buflen)) {
765 DHD_ERROR(("%s: mkiovar failed for allmulti, datalen %d "
766 "buflen %u\n", dhd_ifname(&dhd->pub, ifidx),
767 (int)sizeof(allmulti), buflen));
768 kfree(buf);
769 return;
770 }
771
772 memset(&ioc, 0, sizeof(ioc));
773 ioc.cmd = WLC_SET_VAR;
774 ioc.buf = buf;
775 ioc.len = buflen;
776 ioc.set = true;
777
778 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
779 if (ret < 0) {
780 DHD_ERROR(("%s: set allmulti %d failed\n",
781 dhd_ifname(&dhd->pub, ifidx), ltoh32(allmulti)));
782 }
783
784 kfree(buf);
785
786 /* Finally, pick up the PROMISC flag as well, like the NIC
787 driver does */
788
789 allmulti = (dev->flags & IFF_PROMISC) ? true : false;
790 allmulti = htol32(allmulti);
791
792 memset(&ioc, 0, sizeof(ioc));
793 ioc.cmd = WLC_SET_PROMISC;
794 ioc.buf = &allmulti;
795 ioc.len = sizeof(allmulti);
796 ioc.set = true;
797
798 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
799 if (ret < 0) {
800 DHD_ERROR(("%s: set promisc %d failed\n",
801 dhd_ifname(&dhd->pub, ifidx), ltoh32(allmulti)));
802 }
803 }
804
805 static int
806 _dhd_set_mac_address(dhd_info_t *dhd, int ifidx, struct ether_addr *addr)
807 {
808 char buf[32];
809 wl_ioctl_t ioc;
810 int ret;
811
812 DHD_TRACE(("%s enter\n", __func__));
813 if (!bcm_mkiovar
814 ("cur_etheraddr", (char *)addr, ETHER_ADDR_LEN, buf, 32)) {
815 DHD_ERROR(("%s: mkiovar failed for cur_etheraddr\n",
816 dhd_ifname(&dhd->pub, ifidx)));
817 return -1;
818 }
819 memset(&ioc, 0, sizeof(ioc));
820 ioc.cmd = WLC_SET_VAR;
821 ioc.buf = buf;
822 ioc.len = 32;
823 ioc.set = true;
824
825 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
826 if (ret < 0) {
827 DHD_ERROR(("%s: set cur_etheraddr failed\n",
828 dhd_ifname(&dhd->pub, ifidx)));
829 } else {
830 memcpy(dhd->iflist[ifidx]->net->dev_addr, addr, ETHER_ADDR_LEN);
831 }
832
833 return ret;
834 }
835
836 #ifdef SOFTAP
837 extern struct net_device *ap_net_dev;
838 #endif
839
840 static void dhd_op_if(dhd_if_t *ifp)
841 {
842 dhd_info_t *dhd;
843 int ret = 0, err = 0;
844
845 ASSERT(ifp && ifp->info && ifp->idx); /* Virtual interfaces only */
846
847 dhd = ifp->info;
848
849 DHD_TRACE(("%s: idx %d, state %d\n", __func__, ifp->idx, ifp->state));
850
851 switch (ifp->state) {
852 case WLC_E_IF_ADD:
853 /*
854 * Delete the existing interface before overwriting it
855 * in case we missed the WLC_E_IF_DEL event.
856 */
857 if (ifp->net != NULL) {
858 DHD_ERROR(("%s: ERROR: netdev:%s already exists, "
859 "try free & unregister\n",
860 __func__, ifp->net->name));
861 netif_stop_queue(ifp->net);
862 unregister_netdev(ifp->net);
863 free_netdev(ifp->net);
864 }
865 /* Allocate etherdev, including space for private structure */
866 ifp->net = alloc_etherdev(sizeof(dhd));
867 if (!ifp->net) {
868 DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
869 ret = -ENOMEM;
870 }
871 if (ret == 0) {
872 strcpy(ifp->net->name, ifp->name);
873 memcpy(netdev_priv(ifp->net), &dhd, sizeof(dhd));
874 err = dhd_net_attach(&dhd->pub, ifp->idx);
875 if (err != 0) {
876 DHD_ERROR(("%s: dhd_net_attach failed, "
877 "err %d\n",
878 __func__, err));
879 ret = -EOPNOTSUPP;
880 } else {
881 #ifdef SOFTAP
882 /* semaphore that the soft AP CODE
883 waits on */
884 extern struct semaphore ap_eth_sema;
885
886 /* save ptr to wl0.1 netdev for use
887 in wl_iw.c */
888 ap_net_dev = ifp->net;
889 /* signal to the SOFTAP 'sleeper' thread,
890 wl0.1 is ready */
891 up(&ap_eth_sema);
892 #endif
893 DHD_TRACE(("\n ==== pid:%x, net_device for "
894 "if:%s created ===\n\n",
895 current->pid, ifp->net->name));
896 ifp->state = 0;
897 }
898 }
899 break;
900 case WLC_E_IF_DEL:
901 if (ifp->net != NULL) {
902 DHD_TRACE(("\n%s: got 'WLC_E_IF_DEL' state\n",
903 __func__));
904 netif_stop_queue(ifp->net);
905 unregister_netdev(ifp->net);
906 ret = DHD_DEL_IF; /* Make sure the free_netdev()
907 is called */
908 }
909 break;
910 default:
911 DHD_ERROR(("%s: bad op %d\n", __func__, ifp->state));
912 ASSERT(!ifp->state);
913 break;
914 }
915
916 if (ret < 0) {
917 if (ifp->net)
918 free_netdev(ifp->net);
919
920 dhd->iflist[ifp->idx] = NULL;
921 kfree(ifp);
922 #ifdef SOFTAP
923 if (ifp->net == ap_net_dev)
924 ap_net_dev = NULL; /* NULL SOFTAP global
925 wl0.1 as well */
926 #endif /* SOFTAP */
927 }
928 }
929
930 static int _dhd_sysioc_thread(void *data)
931 {
932 dhd_info_t *dhd = (dhd_info_t *) data;
933 int i;
934 #ifdef SOFTAP
935 bool in_ap = false;
936 #endif
937
938 allow_signal(SIGTERM);
939
940 while (down_interruptible(&dhd->sysioc_sem) == 0) {
941 if (kthread_should_stop())
942 break;
943 for (i = 0; i < DHD_MAX_IFS; i++) {
944 if (dhd->iflist[i]) {
945 #ifdef SOFTAP
946 in_ap = (ap_net_dev != NULL);
947 #endif /* SOFTAP */
948 if (dhd->iflist[i]->state)
949 dhd_op_if(dhd->iflist[i]);
950 #ifdef SOFTAP
951 if (dhd->iflist[i] == NULL) {
952 DHD_TRACE(("\n\n %s: interface %d "
953 "removed!\n", __func__, i));
954 continue;
955 }
956
957 if (in_ap && dhd->set_macaddress) {
958 DHD_TRACE(("attempt to set MAC for %s "
959 "in AP Mode," "blocked. \n",
960 dhd->iflist[i]->net->name));
961 dhd->set_macaddress = false;
962 continue;
963 }
964
965 if (in_ap && dhd->set_multicast) {
966 DHD_TRACE(("attempt to set MULTICAST list for %s" "in AP Mode, blocked. \n",
967 dhd->iflist[i]->net->name));
968 dhd->set_multicast = false;
969 continue;
970 }
971 #endif /* SOFTAP */
972 if (dhd->set_multicast) {
973 dhd->set_multicast = false;
974 _dhd_set_multicast_list(dhd, i);
975 }
976 if (dhd->set_macaddress) {
977 dhd->set_macaddress = false;
978 _dhd_set_mac_address(dhd, i,
979 &dhd->macvalue);
980 }
981 }
982 }
983 }
984 return 0;
985 }
986
987 static int dhd_set_mac_address(struct net_device *dev, void *addr)
988 {
989 int ret = 0;
990
991 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
992 struct sockaddr *sa = (struct sockaddr *)addr;
993 int ifidx;
994
995 ifidx = dhd_net2idx(dhd, dev);
996 if (ifidx == DHD_BAD_IF)
997 return -1;
998
999 ASSERT(dhd->sysioc_tsk);
1000 memcpy(&dhd->macvalue, sa->sa_data, ETHER_ADDR_LEN);
1001 dhd->set_macaddress = true;
1002 up(&dhd->sysioc_sem);
1003
1004 return ret;
1005 }
1006
1007 static void dhd_set_multicast_list(struct net_device *dev)
1008 {
1009 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
1010 int ifidx;
1011
1012 ifidx = dhd_net2idx(dhd, dev);
1013 if (ifidx == DHD_BAD_IF)
1014 return;
1015
1016 ASSERT(dhd->sysioc_tsk);
1017 dhd->set_multicast = true;
1018 up(&dhd->sysioc_sem);
1019 }
1020
1021 int dhd_sendpkt(dhd_pub_t *dhdp, int ifidx, struct sk_buff *pktbuf)
1022 {
1023 int ret;
1024 dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);
1025
1026 /* Reject if down */
1027 if (!dhdp->up || (dhdp->busstate == DHD_BUS_DOWN))
1028 return -ENODEV;
1029
1030 /* Update multicast statistic */
1031 if (pktbuf->len >= ETHER_ADDR_LEN) {
1032 u8 *pktdata = (u8 *) (pktbuf->data);
1033 struct ether_header *eh = (struct ether_header *)pktdata;
1034
1035 if (ETHER_ISMULTI(eh->ether_dhost))
1036 dhdp->tx_multicast++;
1037 if (ntoh16(eh->ether_type) == ETHER_TYPE_802_1X)
1038 atomic_inc(&dhd->pend_8021x_cnt);
1039 }
1040
1041 /* If the protocol uses a data header, apply it */
1042 dhd_prot_hdrpush(dhdp, ifidx, pktbuf);
1043
1044 /* Use bus module to send data frame */
1045 #ifdef BCMDBUS
1046 ret = dbus_send_pkt(dhdp->dbus, pktbuf, NULL /* pktinfo */);
1047 #else
1048 WAKE_LOCK_TIMEOUT(dhdp, WAKE_LOCK_TMOUT, 25);
1049 ret = dhd_bus_txdata(dhdp->bus, pktbuf);
1050 #endif /* BCMDBUS */
1051
1052 return ret;
1053 }
1054
1055 static int dhd_start_xmit(struct sk_buff *skb, struct net_device *net)
1056 {
1057 int ret;
1058 void *pktbuf;
1059 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1060 int ifidx;
1061
1062 DHD_TRACE(("%s: Enter\n", __func__));
1063
1064 /* Reject if down */
1065 if (!dhd->pub.up || (dhd->pub.busstate == DHD_BUS_DOWN)) {
1066 DHD_ERROR(("%s: xmit rejected pub.up=%d busstate=%d\n",
1067 __func__, dhd->pub.up, dhd->pub.busstate));
1068 netif_stop_queue(net);
1069 return -ENODEV;
1070 }
1071
1072 ifidx = dhd_net2idx(dhd, net);
1073 if (ifidx == DHD_BAD_IF) {
1074 DHD_ERROR(("%s: bad ifidx %d\n", __func__, ifidx));
1075 netif_stop_queue(net);
1076 return -ENODEV;
1077 }
1078
1079 /* Make sure there's enough room for any header */
1080 if (skb_headroom(skb) < dhd->pub.hdrlen) {
1081 struct sk_buff *skb2;
1082
1083 DHD_INFO(("%s: insufficient headroom\n",
1084 dhd_ifname(&dhd->pub, ifidx)));
1085 dhd->pub.tx_realloc++;
1086 skb2 = skb_realloc_headroom(skb, dhd->pub.hdrlen);
1087 dev_kfree_skb(skb);
1088 skb = skb2;
1089 if (skb == NULL) {
1090 DHD_ERROR(("%s: skb_realloc_headroom failed\n",
1091 dhd_ifname(&dhd->pub, ifidx)));
1092 ret = -ENOMEM;
1093 goto done;
1094 }
1095 }
1096
1097 /* Convert to packet */
1098 pktbuf = PKTFRMNATIVE(dhd->pub.osh, skb);
1099 if (!pktbuf) {
1100 DHD_ERROR(("%s: PKTFRMNATIVE failed\n",
1101 dhd_ifname(&dhd->pub, ifidx)));
1102 dev_kfree_skb_any(skb);
1103 ret = -ENOMEM;
1104 goto done;
1105 }
1106
1107 ret = dhd_sendpkt(&dhd->pub, ifidx, pktbuf);
1108
1109 done:
1110 if (ret)
1111 dhd->pub.dstats.tx_dropped++;
1112 else
1113 dhd->pub.tx_packets++;
1114
1115 /* Return ok: we always eat the packet */
1116 return 0;
1117 }
1118
1119 void dhd_txflowcontrol(dhd_pub_t *dhdp, int ifidx, bool state)
1120 {
1121 struct net_device *net;
1122 dhd_info_t *dhd = dhdp->info;
1123
1124 DHD_TRACE(("%s: Enter\n", __func__));
1125
1126 dhdp->txoff = state;
1127 ASSERT(dhd && dhd->iflist[ifidx]);
1128 net = dhd->iflist[ifidx]->net;
1129 if (state == ON)
1130 netif_stop_queue(net);
1131 else
1132 netif_wake_queue(net);
1133 }
1134
1135 void dhd_rx_frame(dhd_pub_t *dhdp, int ifidx, struct sk_buff *pktbuf,
1136 int numpkt)
1137 {
1138 dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
1139 struct sk_buff *skb;
1140 unsigned char *eth;
1141 uint len;
1142 void *data;
1143 struct sk_buff *pnext, *save_pktbuf;
1144 int i;
1145 dhd_if_t *ifp;
1146 wl_event_msg_t event;
1147
1148 DHD_TRACE(("%s: Enter\n", __func__));
1149
1150 save_pktbuf = pktbuf;
1151
1152 for (i = 0; pktbuf && i < numpkt; i++, pktbuf = pnext) {
1153
1154 pnext = pktbuf->next;
1155 pktbuf->next = NULL;
1156
1157 skb = PKTTONATIVE(dhdp->osh, pktbuf);
1158
1159 /* Get the protocol, maintain skb around eth_type_trans()
1160 * The main reason for this hack is for the limitation of
1161 * Linux 2.4 where 'eth_type_trans' uses the
1162 * 'net->hard_header_len'
1163 * to perform skb_pull inside vs ETH_HLEN. Since to avoid
1164 * coping of the packet coming from the network stack to add
1165 * BDC, Hardware header etc, during network interface
1166 * registration
1167 * we set the 'net->hard_header_len' to ETH_HLEN + extra space
1168 * required
1169 * for BDC, Hardware header etc. and not just the ETH_HLEN
1170 */
1171 eth = skb->data;
1172 len = skb->len;
1173
1174 ifp = dhd->iflist[ifidx];
1175 if (ifp == NULL)
1176 ifp = dhd->iflist[0];
1177
1178 ASSERT(ifp);
1179 skb->dev = ifp->net;
1180 skb->protocol = eth_type_trans(skb, skb->dev);
1181
1182 if (skb->pkt_type == PACKET_MULTICAST)
1183 dhd->pub.rx_multicast++;
1184
1185 skb->data = eth;
1186 skb->len = len;
1187
1188 /* Strip header, count, deliver upward */
1189 skb_pull(skb, ETH_HLEN);
1190
1191 /* Process special event packets and then discard them */
1192 if (ntoh16(skb->protocol) == ETHER_TYPE_BRCM)
1193 dhd_wl_host_event(dhd, &ifidx,
1194 skb_mac_header(skb),
1195 &event, &data);
1196
1197 ASSERT(ifidx < DHD_MAX_IFS && dhd->iflist[ifidx]);
1198 if (dhd->iflist[ifidx] && !dhd->iflist[ifidx]->state)
1199 ifp = dhd->iflist[ifidx];
1200
1201 if (ifp->net)
1202 ifp->net->last_rx = jiffies;
1203
1204 dhdp->dstats.rx_bytes += skb->len;
1205 dhdp->rx_packets++; /* Local count */
1206
1207 if (in_interrupt()) {
1208 netif_rx(skb);
1209 } else {
1210 /* If the receive is not processed inside an ISR,
1211 * the softirqd must be woken explicitly to service
1212 * the NET_RX_SOFTIRQ. In 2.6 kernels, this is handled
1213 * by netif_rx_ni(), but in earlier kernels, we need
1214 * to do it manually.
1215 */
1216 netif_rx_ni(skb);
1217 }
1218 }
1219 }
1220
1221 void dhd_event(struct dhd_info *dhd, char *evpkt, int evlen, int ifidx)
1222 {
1223 /* Linux version has nothing to do */
1224 return;
1225 }
1226
1227 void dhd_txcomplete(dhd_pub_t *dhdp, struct sk_buff *txp, bool success)
1228 {
1229 uint ifidx;
1230 dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);
1231 struct ether_header *eh;
1232 u16 type;
1233
1234 dhd_prot_hdrpull(dhdp, &ifidx, txp);
1235
1236 eh = (struct ether_header *)(txp->data);
1237 type = ntoh16(eh->ether_type);
1238
1239 if (type == ETHER_TYPE_802_1X)
1240 atomic_dec(&dhd->pend_8021x_cnt);
1241
1242 }
1243
1244 static struct net_device_stats *dhd_get_stats(struct net_device *net)
1245 {
1246 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1247 dhd_if_t *ifp;
1248 int ifidx;
1249
1250 DHD_TRACE(("%s: Enter\n", __func__));
1251
1252 ifidx = dhd_net2idx(dhd, net);
1253 if (ifidx == DHD_BAD_IF)
1254 return NULL;
1255
1256 ifp = dhd->iflist[ifidx];
1257 ASSERT(dhd && ifp);
1258
1259 if (dhd->pub.up) {
1260 /* Use the protocol to get dongle stats */
1261 dhd_prot_dstats(&dhd->pub);
1262 }
1263
1264 /* Copy dongle stats to net device stats */
1265 ifp->stats.rx_packets = dhd->pub.dstats.rx_packets;
1266 ifp->stats.tx_packets = dhd->pub.dstats.tx_packets;
1267 ifp->stats.rx_bytes = dhd->pub.dstats.rx_bytes;
1268 ifp->stats.tx_bytes = dhd->pub.dstats.tx_bytes;
1269 ifp->stats.rx_errors = dhd->pub.dstats.rx_errors;
1270 ifp->stats.tx_errors = dhd->pub.dstats.tx_errors;
1271 ifp->stats.rx_dropped = dhd->pub.dstats.rx_dropped;
1272 ifp->stats.tx_dropped = dhd->pub.dstats.tx_dropped;
1273 ifp->stats.multicast = dhd->pub.dstats.multicast;
1274
1275 return &ifp->stats;
1276 }
1277
1278 static int dhd_watchdog_thread(void *data)
1279 {
1280 dhd_info_t *dhd = (dhd_info_t *) data;
1281 WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_WATCHDOG, "dhd_watchdog_thread");
1282
1283 /* This thread doesn't need any user-level access,
1284 * so get rid of all our resources
1285 */
1286 #ifdef DHD_SCHED
1287 if (dhd_watchdog_prio > 0) {
1288 struct sched_param param;
1289 param.sched_priority = (dhd_watchdog_prio < MAX_RT_PRIO) ?
1290 dhd_watchdog_prio : (MAX_RT_PRIO - 1);
1291 setScheduler(current, SCHED_FIFO, &param);
1292 }
1293 #endif /* DHD_SCHED */
1294
1295 allow_signal(SIGTERM);
1296 /* Run until signal received */
1297 while (1) {
1298 if (kthread_should_stop())
1299 break;
1300 if (down_interruptible(&dhd->watchdog_sem) == 0) {
1301 if (dhd->pub.dongle_reset == false) {
1302 WAKE_LOCK(&dhd->pub, WAKE_LOCK_WATCHDOG);
1303 /* Call the bus module watchdog */
1304 dhd_bus_watchdog(&dhd->pub);
1305 WAKE_UNLOCK(&dhd->pub, WAKE_LOCK_WATCHDOG);
1306 }
1307 /* Count the tick for reference */
1308 dhd->pub.tickcnt++;
1309 } else
1310 break;
1311 }
1312
1313 WAKE_LOCK_DESTROY(&dhd->pub, WAKE_LOCK_WATCHDOG);
1314 return 0;
1315 }
1316
1317 static void dhd_watchdog(unsigned long data)
1318 {
1319 dhd_info_t *dhd = (dhd_info_t *) data;
1320
1321 if (dhd->watchdog_tsk) {
1322 up(&dhd->watchdog_sem);
1323
1324 /* Reschedule the watchdog */
1325 if (dhd->wd_timer_valid) {
1326 mod_timer(&dhd->timer,
1327 jiffies + dhd_watchdog_ms * HZ / 1000);
1328 }
1329 return;
1330 }
1331
1332 /* Call the bus module watchdog */
1333 dhd_bus_watchdog(&dhd->pub);
1334
1335 /* Count the tick for reference */
1336 dhd->pub.tickcnt++;
1337
1338 /* Reschedule the watchdog */
1339 if (dhd->wd_timer_valid)
1340 mod_timer(&dhd->timer, jiffies + dhd_watchdog_ms * HZ / 1000);
1341 }
1342
1343 static int dhd_dpc_thread(void *data)
1344 {
1345 dhd_info_t *dhd = (dhd_info_t *) data;
1346
1347 WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_DPC, "dhd_dpc_thread");
1348 /* This thread doesn't need any user-level access,
1349 * so get rid of all our resources
1350 */
1351 #ifdef DHD_SCHED
1352 if (dhd_dpc_prio > 0) {
1353 struct sched_param param;
1354 param.sched_priority =
1355 (dhd_dpc_prio <
1356 MAX_RT_PRIO) ? dhd_dpc_prio : (MAX_RT_PRIO - 1);
1357 setScheduler(current, SCHED_FIFO, &param);
1358 }
1359 #endif /* DHD_SCHED */
1360
1361 allow_signal(SIGTERM);
1362 /* Run until signal received */
1363 while (1) {
1364 if (kthread_should_stop())
1365 break;
1366 if (down_interruptible(&dhd->dpc_sem) == 0) {
1367 /* Call bus dpc unless it indicated down
1368 (then clean stop) */
1369 if (dhd->pub.busstate != DHD_BUS_DOWN) {
1370 WAKE_LOCK(&dhd->pub, WAKE_LOCK_DPC);
1371 if (dhd_bus_dpc(dhd->pub.bus)) {
1372 up(&dhd->dpc_sem);
1373 WAKE_LOCK_TIMEOUT(&dhd->pub,
1374 WAKE_LOCK_TMOUT, 25);
1375 }
1376 WAKE_UNLOCK(&dhd->pub, WAKE_LOCK_DPC);
1377 } else {
1378 dhd_bus_stop(dhd->pub.bus, true);
1379 }
1380 } else
1381 break;
1382 }
1383
1384 WAKE_LOCK_DESTROY(&dhd->pub, WAKE_LOCK_DPC);
1385 return 0;
1386 }
1387
1388 static void dhd_dpc(unsigned long data)
1389 {
1390 dhd_info_t *dhd;
1391
1392 dhd = (dhd_info_t *) data;
1393
1394 /* Call bus dpc unless it indicated down (then clean stop) */
1395 if (dhd->pub.busstate != DHD_BUS_DOWN) {
1396 if (dhd_bus_dpc(dhd->pub.bus))
1397 tasklet_schedule(&dhd->tasklet);
1398 } else {
1399 dhd_bus_stop(dhd->pub.bus, true);
1400 }
1401 }
1402
1403 void dhd_sched_dpc(dhd_pub_t *dhdp)
1404 {
1405 dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
1406
1407 if (dhd->dpc_tsk) {
1408 up(&dhd->dpc_sem);
1409 return;
1410 }
1411
1412 tasklet_schedule(&dhd->tasklet);
1413 }
1414
1415 #ifdef TOE
1416 /* Retrieve current toe component enables, which are kept
1417 as a bitmap in toe_ol iovar */
1418 static int dhd_toe_get(dhd_info_t *dhd, int ifidx, u32 *toe_ol)
1419 {
1420 wl_ioctl_t ioc;
1421 char buf[32];
1422 int ret;
1423
1424 memset(&ioc, 0, sizeof(ioc));
1425
1426 ioc.cmd = WLC_GET_VAR;
1427 ioc.buf = buf;
1428 ioc.len = (uint) sizeof(buf);
1429 ioc.set = false;
1430
1431 strcpy(buf, "toe_ol");
1432 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1433 if (ret < 0) {
1434 /* Check for older dongle image that doesn't support toe_ol */
1435 if (ret == -EIO) {
1436 DHD_ERROR(("%s: toe not supported by device\n",
1437 dhd_ifname(&dhd->pub, ifidx)));
1438 return -EOPNOTSUPP;
1439 }
1440
1441 DHD_INFO(("%s: could not get toe_ol: ret=%d\n",
1442 dhd_ifname(&dhd->pub, ifidx), ret));
1443 return ret;
1444 }
1445
1446 memcpy(toe_ol, buf, sizeof(u32));
1447 return 0;
1448 }
1449
1450 /* Set current toe component enables in toe_ol iovar,
1451 and set toe global enable iovar */
1452 static int dhd_toe_set(dhd_info_t *dhd, int ifidx, u32 toe_ol)
1453 {
1454 wl_ioctl_t ioc;
1455 char buf[32];
1456 int toe, ret;
1457
1458 memset(&ioc, 0, sizeof(ioc));
1459
1460 ioc.cmd = WLC_SET_VAR;
1461 ioc.buf = buf;
1462 ioc.len = (uint) sizeof(buf);
1463 ioc.set = true;
1464
1465 /* Set toe_ol as requested */
1466
1467 strcpy(buf, "toe_ol");
1468 memcpy(&buf[sizeof("toe_ol")], &toe_ol, sizeof(u32));
1469
1470 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1471 if (ret < 0) {
1472 DHD_ERROR(("%s: could not set toe_ol: ret=%d\n",
1473 dhd_ifname(&dhd->pub, ifidx), ret));
1474 return ret;
1475 }
1476
1477 /* Enable toe globally only if any components are enabled. */
1478
1479 toe = (toe_ol != 0);
1480
1481 strcpy(buf, "toe");
1482 memcpy(&buf[sizeof("toe")], &toe, sizeof(u32));
1483
1484 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1485 if (ret < 0) {
1486 DHD_ERROR(("%s: could not set toe: ret=%d\n",
1487 dhd_ifname(&dhd->pub, ifidx), ret));
1488 return ret;
1489 }
1490
1491 return 0;
1492 }
1493 #endif /* TOE */
1494
1495 static void dhd_ethtool_get_drvinfo(struct net_device *net,
1496 struct ethtool_drvinfo *info)
1497 {
1498 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1499
1500 sprintf(info->driver, DRV_MODULE_NAME);
1501 sprintf(info->version, "%lu", dhd->pub.drv_version);
1502 sprintf(info->fw_version, "%s", wl_cfg80211_get_fwname());
1503 sprintf(info->bus_info, "%s", dev_name(&wl_cfg80211_get_sdio_func()->dev));
1504 }
1505
1506 struct ethtool_ops dhd_ethtool_ops = {
1507 .get_drvinfo = dhd_ethtool_get_drvinfo
1508 };
1509
1510 static int dhd_ethtool(dhd_info_t *dhd, void *uaddr)
1511 {
1512 struct ethtool_drvinfo info;
1513 char drvname[sizeof(info.driver)];
1514 u32 cmd;
1515 #ifdef TOE
1516 struct ethtool_value edata;
1517 u32 toe_cmpnt, csum_dir;
1518 int ret;
1519 #endif
1520
1521 DHD_TRACE(("%s: Enter\n", __func__));
1522
1523 /* all ethtool calls start with a cmd word */
1524 if (copy_from_user(&cmd, uaddr, sizeof(u32)))
1525 return -EFAULT;
1526
1527 switch (cmd) {
1528 case ETHTOOL_GDRVINFO:
1529 /* Copy out any request driver name */
1530 if (copy_from_user(&info, uaddr, sizeof(info)))
1531 return -EFAULT;
1532 strncpy(drvname, info.driver, sizeof(info.driver));
1533 drvname[sizeof(info.driver) - 1] = '\0';
1534
1535 /* clear struct for return */
1536 memset(&info, 0, sizeof(info));
1537 info.cmd = cmd;
1538
1539 /* if dhd requested, identify ourselves */
1540 if (strcmp(drvname, "?dhd") == 0) {
1541 sprintf(info.driver, "dhd");
1542 strcpy(info.version, EPI_VERSION_STR);
1543 }
1544
1545 /* otherwise, require dongle to be up */
1546 else if (!dhd->pub.up) {
1547 DHD_ERROR(("%s: dongle is not up\n", __func__));
1548 return -ENODEV;
1549 }
1550
1551 /* finally, report dongle driver type */
1552 else if (dhd->pub.iswl)
1553 sprintf(info.driver, "wl");
1554 else
1555 sprintf(info.driver, "xx");
1556
1557 sprintf(info.version, "%lu", dhd->pub.drv_version);
1558 if (copy_to_user(uaddr, &info, sizeof(info)))
1559 return -EFAULT;
1560 DHD_CTL(("%s: given %*s, returning %s\n", __func__,
1561 (int)sizeof(drvname), drvname, info.driver));
1562 break;
1563
1564 #ifdef TOE
1565 /* Get toe offload components from dongle */
1566 case ETHTOOL_GRXCSUM:
1567 case ETHTOOL_GTXCSUM:
1568 ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
1569 if (ret < 0)
1570 return ret;
1571
1572 csum_dir =
1573 (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
1574
1575 edata.cmd = cmd;
1576 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
1577
1578 if (copy_to_user(uaddr, &edata, sizeof(edata)))
1579 return -EFAULT;
1580 break;
1581
1582 /* Set toe offload components in dongle */
1583 case ETHTOOL_SRXCSUM:
1584 case ETHTOOL_STXCSUM:
1585 if (copy_from_user(&edata, uaddr, sizeof(edata)))
1586 return -EFAULT;
1587
1588 /* Read the current settings, update and write back */
1589 ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
1590 if (ret < 0)
1591 return ret;
1592
1593 csum_dir =
1594 (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
1595
1596 if (edata.data != 0)
1597 toe_cmpnt |= csum_dir;
1598 else
1599 toe_cmpnt &= ~csum_dir;
1600
1601 ret = dhd_toe_set(dhd, 0, toe_cmpnt);
1602 if (ret < 0)
1603 return ret;
1604
1605 /* If setting TX checksum mode, tell Linux the new mode */
1606 if (cmd == ETHTOOL_STXCSUM) {
1607 if (edata.data)
1608 dhd->iflist[0]->net->features |=
1609 NETIF_F_IP_CSUM;
1610 else
1611 dhd->iflist[0]->net->features &=
1612 ~NETIF_F_IP_CSUM;
1613 }
1614
1615 break;
1616 #endif /* TOE */
1617
1618 default:
1619 return -EOPNOTSUPP;
1620 }
1621
1622 return 0;
1623 }
1624
1625 static s16 linuxbcmerrormap[] = { 0, /* 0 */
1626 -EINVAL, /* BCME_ERROR */
1627 -EINVAL, /* BCME_BADARG */
1628 -EINVAL, /* BCME_BADOPTION */
1629 -EINVAL, /* BCME_NOTUP */
1630 -EINVAL, /* BCME_NOTDOWN */
1631 -EINVAL, /* BCME_NOTAP */
1632 -EINVAL, /* BCME_NOTSTA */
1633 -EINVAL, /* BCME_BADKEYIDX */
1634 -EINVAL, /* BCME_RADIOOFF */
1635 -EINVAL, /* BCME_NOTBANDLOCKED */
1636 -EINVAL, /* BCME_NOCLK */
1637 -EINVAL, /* BCME_BADRATESET */
1638 -EINVAL, /* BCME_BADBAND */
1639 -E2BIG, /* BCME_BUFTOOSHORT */
1640 -E2BIG, /* BCME_BUFTOOLONG */
1641 -EBUSY, /* BCME_BUSY */
1642 -EINVAL, /* BCME_NOTASSOCIATED */
1643 -EINVAL, /* BCME_BADSSIDLEN */
1644 -EINVAL, /* BCME_OUTOFRANGECHAN */
1645 -EINVAL, /* BCME_BADCHAN */
1646 -EFAULT, /* BCME_BADADDR */
1647 -ENOMEM, /* BCME_NORESOURCE */
1648 -EOPNOTSUPP, /* BCME_UNSUPPORTED */
1649 -EMSGSIZE, /* BCME_BADLENGTH */
1650 -EINVAL, /* BCME_NOTREADY */
1651 -EPERM, /* BCME_NOTPERMITTED */
1652 -ENOMEM, /* BCME_NOMEM */
1653 -EINVAL, /* BCME_ASSOCIATED */
1654 -ERANGE, /* BCME_RANGE */
1655 -EINVAL, /* BCME_NOTFOUND */
1656 -EINVAL, /* BCME_WME_NOT_ENABLED */
1657 -EINVAL, /* BCME_TSPEC_NOTFOUND */
1658 -EINVAL, /* BCME_ACM_NOTSUPPORTED */
1659 -EINVAL, /* BCME_NOT_WME_ASSOCIATION */
1660 -EIO, /* BCME_SDIO_ERROR */
1661 -ENODEV, /* BCME_DONGLE_DOWN */
1662 -EINVAL, /* BCME_VERSION */
1663 -EIO, /* BCME_TXFAIL */
1664 -EIO, /* BCME_RXFAIL */
1665 -EINVAL, /* BCME_NODEVICE */
1666 -EINVAL, /* BCME_NMODE_DISABLED */
1667 -ENODATA, /* BCME_NONRESIDENT */
1668 };
1669
1670 static int dhd_ioctl_entry(struct net_device *net, struct ifreq *ifr, int cmd)
1671 {
1672 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1673 dhd_ioctl_t ioc;
1674 int bcmerror = 0;
1675 int buflen = 0;
1676 void *buf = NULL;
1677 uint driver = 0;
1678 int ifidx;
1679 bool is_set_key_cmd;
1680
1681 ifidx = dhd_net2idx(dhd, net);
1682 DHD_TRACE(("%s: ifidx %d, cmd 0x%04x\n", __func__, ifidx, cmd));
1683
1684 if (ifidx == DHD_BAD_IF)
1685 return -1;
1686
1687 #if defined(CONFIG_WIRELESS_EXT)
1688 /* linux wireless extensions */
1689 if ((cmd >= SIOCIWFIRST) && (cmd <= SIOCIWLAST)) {
1690 /* may recurse, do NOT lock */
1691 return wl_iw_ioctl(net, ifr, cmd);
1692 }
1693 #endif /* defined(CONFIG_WIRELESS_EXT) */
1694
1695 if (cmd == SIOCETHTOOL)
1696 return dhd_ethtool(dhd, (void *)ifr->ifr_data);
1697
1698 if (cmd != SIOCDEVPRIVATE)
1699 return -EOPNOTSUPP;
1700
1701 memset(&ioc, 0, sizeof(ioc));
1702
1703 /* Copy the ioc control structure part of ioctl request */
1704 if (copy_from_user(&ioc, ifr->ifr_data, sizeof(wl_ioctl_t))) {
1705 bcmerror = -BCME_BADADDR;
1706 goto done;
1707 }
1708
1709 /* Copy out any buffer passed */
1710 if (ioc.buf) {
1711 buflen = min_t(int, ioc.len, DHD_IOCTL_MAXLEN);
1712 /* optimization for direct ioctl calls from kernel */
1713 /*
1714 if (segment_eq(get_fs(), KERNEL_DS)) {
1715 buf = ioc.buf;
1716 } else {
1717 */
1718 {
1719 buf = kmalloc(buflen, GFP_ATOMIC);
1720 if (!buf) {
1721 bcmerror = -BCME_NOMEM;
1722 goto done;
1723 }
1724 if (copy_from_user(buf, ioc.buf, buflen)) {
1725 bcmerror = -BCME_BADADDR;
1726 goto done;
1727 }
1728 }
1729 }
1730
1731 /* To differentiate between wl and dhd read 4 more byes */
1732 if ((copy_from_user(&driver, (char *)ifr->ifr_data + sizeof(wl_ioctl_t),
1733 sizeof(uint)) != 0)) {
1734 bcmerror = -BCME_BADADDR;
1735 goto done;
1736 }
1737
1738 if (!capable(CAP_NET_ADMIN)) {
1739 bcmerror = -BCME_EPERM;
1740 goto done;
1741 }
1742
1743 /* check for local dhd ioctl and handle it */
1744 if (driver == DHD_IOCTL_MAGIC) {
1745 bcmerror = dhd_ioctl((void *)&dhd->pub, &ioc, buf, buflen);
1746 if (bcmerror)
1747 dhd->pub.bcmerror = bcmerror;
1748 goto done;
1749 }
1750
1751 /* send to dongle (must be up, and wl) */
1752 if ((dhd->pub.busstate != DHD_BUS_DATA)) {
1753 DHD_ERROR(("%s DONGLE_DOWN,__func__\n", __func__));
1754 bcmerror = BCME_DONGLE_DOWN;
1755 goto done;
1756 }
1757
1758 if (!dhd->pub.iswl) {
1759 bcmerror = BCME_DONGLE_DOWN;
1760 goto done;
1761 }
1762
1763 /* Intercept WLC_SET_KEY IOCTL - serialize M4 send and set key IOCTL to
1764 * prevent M4 encryption.
1765 */
1766 is_set_key_cmd = ((ioc.cmd == WLC_SET_KEY) ||
1767 ((ioc.cmd == WLC_SET_VAR) &&
1768 !(strncmp("wsec_key", ioc.buf, 9))) ||
1769 ((ioc.cmd == WLC_SET_VAR) &&
1770 !(strncmp("bsscfg:wsec_key", ioc.buf, 15))));
1771 if (is_set_key_cmd)
1772 dhd_wait_pend8021x(net);
1773
1774 WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_IOCTL, "dhd_ioctl_entry");
1775 WAKE_LOCK(&dhd->pub, WAKE_LOCK_IOCTL);
1776
1777 bcmerror =
1778 dhd_prot_ioctl(&dhd->pub, ifidx, (wl_ioctl_t *)&ioc, buf, buflen);
1779
1780 WAKE_UNLOCK(&dhd->pub, WAKE_LOCK_IOCTL);
1781 WAKE_LOCK_DESTROY(&dhd->pub, WAKE_LOCK_IOCTL);
1782 done:
1783 if (!bcmerror && buf && ioc.buf) {
1784 if (copy_to_user(ioc.buf, buf, buflen))
1785 bcmerror = -EFAULT;
1786 }
1787
1788 if (buf)
1789 kfree(buf);
1790
1791 if (bcmerror > 0)
1792 bcmerror = 0;
1793 else if (bcmerror < BCME_LAST)
1794 bcmerror = BCME_ERROR;
1795
1796 return linuxbcmerrormap[-bcmerror];
1797 }
1798
1799 static int dhd_stop(struct net_device *net)
1800 {
1801 #if !defined(IGNORE_ETH0_DOWN)
1802 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1803
1804 DHD_TRACE(("%s: Enter\n", __func__));
1805 if (IS_CFG80211_FAVORITE()) {
1806 wl_cfg80211_down();
1807 }
1808 if (dhd->pub.up == 0)
1809 return 0;
1810
1811 /* Set state and stop OS transmissions */
1812 dhd->pub.up = 0;
1813 netif_stop_queue(net);
1814 #else
1815 DHD_ERROR(("BYPASS %s:due to BRCM compilation : under investigation\n",
1816 __func__));
1817 #endif /* !defined(IGNORE_ETH0_DOWN) */
1818
1819 return 0;
1820 }
1821
1822 static int dhd_open(struct net_device *net)
1823 {
1824 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1825 #ifdef TOE
1826 u32 toe_ol;
1827 #endif
1828 int ifidx = dhd_net2idx(dhd, net);
1829 s32 ret = 0;
1830
1831 DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));
1832
1833 if (ifidx == 0) { /* do it only for primary eth0 */
1834
1835 /* try to bring up bus */
1836 ret = dhd_bus_start(&dhd->pub);
1837 if (ret != 0) {
1838 DHD_ERROR(("%s: failed with code %d\n", __func__, ret));
1839 return -1;
1840 }
1841 atomic_set(&dhd->pend_8021x_cnt, 0);
1842
1843 memcpy(net->dev_addr, dhd->pub.mac.octet, ETHER_ADDR_LEN);
1844
1845 #ifdef TOE
1846 /* Get current TOE mode from dongle */
1847 if (dhd_toe_get(dhd, ifidx, &toe_ol) >= 0
1848 && (toe_ol & TOE_TX_CSUM_OL) != 0)
1849 dhd->iflist[ifidx]->net->features |= NETIF_F_IP_CSUM;
1850 else
1851 dhd->iflist[ifidx]->net->features &= ~NETIF_F_IP_CSUM;
1852 #endif
1853 }
1854 /* Allow transmit calls */
1855 netif_start_queue(net);
1856 dhd->pub.up = 1;
1857 if (IS_CFG80211_FAVORITE()) {
1858 if (unlikely(wl_cfg80211_up())) {
1859 DHD_ERROR(("%s: failed to bring up cfg80211\n",
1860 __func__));
1861 return -1;
1862 }
1863 }
1864
1865 return ret;
1866 }
1867
1868 struct osl_info *dhd_osl_attach(void *pdev, uint bustype)
1869 {
1870 return osl_attach(pdev, bustype);
1871 }
1872
1873 void dhd_osl_detach(struct osl_info *osh)
1874 {
1875 osl_detach(osh);
1876 }
1877
1878 int
1879 dhd_add_if(dhd_info_t *dhd, int ifidx, void *handle, char *name,
1880 u8 *mac_addr, u32 flags, u8 bssidx)
1881 {
1882 dhd_if_t *ifp;
1883
1884 DHD_TRACE(("%s: idx %d, handle->%p\n", __func__, ifidx, handle));
1885
1886 ASSERT(dhd && (ifidx < DHD_MAX_IFS));
1887
1888 ifp = dhd->iflist[ifidx];
1889 if (!ifp && !(ifp = kmalloc(sizeof(dhd_if_t), GFP_ATOMIC))) {
1890 DHD_ERROR(("%s: OOM - dhd_if_t\n", __func__));
1891 return -ENOMEM;
1892 }
1893
1894 memset(ifp, 0, sizeof(dhd_if_t));
1895 ifp->info = dhd;
1896 dhd->iflist[ifidx] = ifp;
1897 strlcpy(ifp->name, name, IFNAMSIZ);
1898 if (mac_addr != NULL)
1899 memcpy(&ifp->mac_addr, mac_addr, ETHER_ADDR_LEN);
1900
1901 if (handle == NULL) {
1902 ifp->state = WLC_E_IF_ADD;
1903 ifp->idx = ifidx;
1904 ASSERT(dhd->sysioc_tsk);
1905 up(&dhd->sysioc_sem);
1906 } else
1907 ifp->net = (struct net_device *)handle;
1908
1909 return 0;
1910 }
1911
1912 void dhd_del_if(dhd_info_t *dhd, int ifidx)
1913 {
1914 dhd_if_t *ifp;
1915
1916 DHD_TRACE(("%s: idx %d\n", __func__, ifidx));
1917
1918 ASSERT(dhd && ifidx && (ifidx < DHD_MAX_IFS));
1919 ifp = dhd->iflist[ifidx];
1920 if (!ifp) {
1921 DHD_ERROR(("%s: Null interface\n", __func__));
1922 return;
1923 }
1924
1925 ifp->state = WLC_E_IF_DEL;
1926 ifp->idx = ifidx;
1927 ASSERT(dhd->sysioc_tsk);
1928 up(&dhd->sysioc_sem);
1929 }
1930
1931 dhd_pub_t *dhd_attach(struct osl_info *osh, struct dhd_bus *bus,
1932 uint bus_hdrlen)
1933 {
1934 dhd_info_t *dhd = NULL;
1935 struct net_device *net;
1936
1937 DHD_TRACE(("%s: Enter\n", __func__));
1938 /* updates firmware nvram path if it was provided as module
1939 paramters */
1940 if ((firmware_path != NULL) && (firmware_path[0] != '\0'))
1941 strcpy(fw_path, firmware_path);
1942 if ((nvram_path != NULL) && (nvram_path[0] != '\0'))
1943 strcpy(nv_path, nvram_path);
1944
1945 /* Allocate etherdev, including space for private structure */
1946 net = alloc_etherdev(sizeof(dhd));
1947 if (!net) {
1948 DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
1949 goto fail;
1950 }
1951
1952 /* Allocate primary dhd_info */
1953 dhd = kmalloc(sizeof(dhd_info_t), GFP_ATOMIC);
1954 if (!dhd) {
1955 DHD_ERROR(("%s: OOM - alloc dhd_info\n", __func__));
1956 goto fail;
1957 }
1958
1959 memset(dhd, 0, sizeof(dhd_info_t));
1960
1961 /*
1962 * Save the dhd_info into the priv
1963 */
1964 memcpy(netdev_priv(net), &dhd, sizeof(dhd));
1965 dhd->pub.osh = osh;
1966
1967 /* Set network interface name if it was provided as module parameter */
1968 if (iface_name[0]) {
1969 int len;
1970 char ch;
1971 strncpy(net->name, iface_name, IFNAMSIZ);
1972 net->name[IFNAMSIZ - 1] = 0;
1973 len = strlen(net->name);
1974 ch = net->name[len - 1];
1975 if ((ch > '9' || ch < '0') && (len < IFNAMSIZ - 2))
1976 strcat(net->name, "%d");
1977 }
1978
1979 if (dhd_add_if(dhd, 0, (void *)net, net->name, NULL, 0, 0) ==
1980 DHD_BAD_IF)
1981 goto fail;
1982
1983 net->netdev_ops = NULL;
1984 sema_init(&dhd->proto_sem, 1);
1985 /* Initialize other structure content */
1986 init_waitqueue_head(&dhd->ioctl_resp_wait);
1987 init_waitqueue_head(&dhd->ctrl_wait);
1988
1989 /* Initialize the spinlocks */
1990 spin_lock_init(&dhd->sdlock);
1991 spin_lock_init(&dhd->txqlock);
1992
1993 /* Link to info module */
1994 dhd->pub.info = dhd;
1995
1996 /* Link to bus module */
1997 dhd->pub.bus = bus;
1998 dhd->pub.hdrlen = bus_hdrlen;
1999
2000 /* Attach and link in the protocol */
2001 if (dhd_prot_attach(&dhd->pub) != 0) {
2002 DHD_ERROR(("dhd_prot_attach failed\n"));
2003 goto fail;
2004 }
2005 #if defined(CONFIG_WIRELESS_EXT)
2006 /* Attach and link in the iw */
2007 if (wl_iw_attach(net, (void *)&dhd->pub) != 0) {
2008 DHD_ERROR(("wl_iw_attach failed\n"));
2009 goto fail;
2010 }
2011 #endif /* defined(CONFIG_WIRELESS_EXT) */
2012
2013 /* Attach and link in the cfg80211 */
2014 if (IS_CFG80211_FAVORITE()) {
2015 if (unlikely(wl_cfg80211_attach(net, &dhd->pub))) {
2016 DHD_ERROR(("wl_cfg80211_attach failed\n"));
2017 goto fail;
2018 }
2019 if (!NO_FW_REQ()) {
2020 strcpy(fw_path, wl_cfg80211_get_fwname());
2021 strcpy(nv_path, wl_cfg80211_get_nvramname());
2022 }
2023 wl_cfg80211_dbg_level(DBG_CFG80211_GET());
2024 }
2025
2026 /* Set up the watchdog timer */
2027 init_timer(&dhd->timer);
2028 dhd->timer.data = (unsigned long) dhd;
2029 dhd->timer.function = dhd_watchdog;
2030
2031 /* Initialize thread based operation and lock */
2032 sema_init(&dhd->sdsem, 1);
2033 if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0))
2034 dhd->threads_only = true;
2035 else
2036 dhd->threads_only = false;
2037
2038 if (dhd_dpc_prio >= 0) {
2039 /* Initialize watchdog thread */
2040 sema_init(&dhd->watchdog_sem, 0);
2041 dhd->watchdog_tsk = kthread_run(dhd_watchdog_thread, dhd,
2042 "dhd_watchdog");
2043 if (IS_ERR(dhd->watchdog_tsk)) {
2044 printk(KERN_WARNING
2045 "dhd_watchdog thread failed to start\n");
2046 dhd->watchdog_tsk = NULL;
2047 }
2048 } else {
2049 dhd->watchdog_tsk = NULL;
2050 }
2051
2052 /* Set up the bottom half handler */
2053 if (dhd_dpc_prio >= 0) {
2054 /* Initialize DPC thread */
2055 sema_init(&dhd->dpc_sem, 0);
2056 dhd->dpc_tsk = kthread_run(dhd_dpc_thread, dhd, "dhd_dpc");
2057 if (IS_ERR(dhd->dpc_tsk)) {
2058 printk(KERN_WARNING
2059 "dhd_dpc thread failed to start\n");
2060 dhd->dpc_tsk = NULL;
2061 }
2062 } else {
2063 tasklet_init(&dhd->tasklet, dhd_dpc, (unsigned long) dhd);
2064 dhd->dpc_tsk = NULL;
2065 }
2066
2067 if (dhd_sysioc) {
2068 sema_init(&dhd->sysioc_sem, 0);
2069 dhd->sysioc_tsk = kthread_run(_dhd_sysioc_thread, dhd,
2070 "_dhd_sysioc");
2071 if (IS_ERR(dhd->sysioc_tsk)) {
2072 printk(KERN_WARNING
2073 "_dhd_sysioc thread failed to start\n");
2074 dhd->sysioc_tsk = NULL;
2075 }
2076 } else
2077 dhd->sysioc_tsk = NULL;
2078
2079 /*
2080 * Save the dhd_info into the priv
2081 */
2082 memcpy(netdev_priv(net), &dhd, sizeof(dhd));
2083
2084 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2085 g_bus = bus;
2086 #endif
2087 #if defined(CONFIG_PM_SLEEP)
2088 register_pm_notifier(&dhd_sleep_pm_notifier);
2089 #endif /* defined(CONFIG_PM_SLEEP) */
2090 /* && defined(DHD_GPL) */
2091 /* Init lock suspend to prevent kernel going to suspend */
2092 WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_TMOUT, "dhd_wake_lock");
2093 WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_LINK_DOWN_TMOUT,
2094 "dhd_wake_lock_link_dw_event");
2095 WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_PNO_FIND_TMOUT,
2096 "dhd_wake_lock_link_pno_find_event");
2097 #ifdef CONFIG_HAS_EARLYSUSPEND
2098 dhd->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 20;
2099 dhd->early_suspend.suspend = dhd_early_suspend;
2100 dhd->early_suspend.resume = dhd_late_resume;
2101 register_early_suspend(&dhd->early_suspend);
2102 #endif
2103
2104 return &dhd->pub;
2105
2106 fail:
2107 if (net)
2108 free_netdev(net);
2109 if (dhd)
2110 dhd_detach(&dhd->pub);
2111
2112 return NULL;
2113 }
2114
2115 int dhd_bus_start(dhd_pub_t *dhdp)
2116 {
2117 int ret = -1;
2118 dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
2119 #ifdef EMBEDDED_PLATFORM
2120 char iovbuf[WL_EVENTING_MASK_LEN + 12]; /* Room for "event_msgs" +
2121 '\0' + bitvec */
2122 #endif /* EMBEDDED_PLATFORM */
2123
2124 ASSERT(dhd);
2125
2126 DHD_TRACE(("%s:\n", __func__));
2127
2128 /* try to download image and nvram to the dongle */
2129 if (dhd->pub.busstate == DHD_BUS_DOWN) {
2130 WAKE_LOCK_INIT(dhdp, WAKE_LOCK_DOWNLOAD, "dhd_bus_start");
2131 WAKE_LOCK(dhdp, WAKE_LOCK_DOWNLOAD);
2132 if (!(dhd_bus_download_firmware(dhd->pub.bus, dhd->pub.osh,
2133 fw_path, nv_path))) {
2134 DHD_ERROR(("%s: dhdsdio_probe_download failed. "
2135 "firmware = %s nvram = %s\n",
2136 __func__, fw_path, nv_path));
2137 WAKE_UNLOCK(dhdp, WAKE_LOCK_DOWNLOAD);
2138 WAKE_LOCK_DESTROY(dhdp, WAKE_LOCK_DOWNLOAD);
2139 return -1;
2140 }
2141
2142 WAKE_UNLOCK(dhdp, WAKE_LOCK_DOWNLOAD);
2143 WAKE_LOCK_DESTROY(dhdp, WAKE_LOCK_DOWNLOAD);
2144 }
2145
2146 /* Start the watchdog timer */
2147 dhd->pub.tickcnt = 0;
2148 dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
2149
2150 /* Bring up the bus */
2151 ret = dhd_bus_init(&dhd->pub, true);
2152 if (ret != 0) {
2153 DHD_ERROR(("%s, dhd_bus_init failed %d\n", __func__, ret));
2154 return ret;
2155 }
2156 #if defined(OOB_INTR_ONLY)
2157 /* Host registration for OOB interrupt */
2158 if (bcmsdh_register_oob_intr(dhdp)) {
2159 del_timer_sync(&dhd->timer);
2160 dhd->wd_timer_valid = false;
2161 DHD_ERROR(("%s Host failed to resgister for OOB\n", __func__));
2162 return -ENODEV;
2163 }
2164
2165 /* Enable oob at firmware */
2166 dhd_enable_oob_intr(dhd->pub.bus, true);
2167 #endif /* defined(OOB_INTR_ONLY) */
2168
2169 /* If bus is not ready, can't come up */
2170 if (dhd->pub.busstate != DHD_BUS_DATA) {
2171 del_timer_sync(&dhd->timer);
2172 dhd->wd_timer_valid = false;
2173 DHD_ERROR(("%s failed bus is not ready\n", __func__));
2174 return -ENODEV;
2175 }
2176 #ifdef EMBEDDED_PLATFORM
2177 bcm_mkiovar("event_msgs", dhdp->eventmask, WL_EVENTING_MASK_LEN, iovbuf,
2178 sizeof(iovbuf));
2179 dhdcdc_query_ioctl(dhdp, 0, WLC_GET_VAR, iovbuf, sizeof(iovbuf));
2180 bcopy(iovbuf, dhdp->eventmask, WL_EVENTING_MASK_LEN);
2181
2182 setbit(dhdp->eventmask, WLC_E_SET_SSID);
2183 setbit(dhdp->eventmask, WLC_E_PRUNE);
2184 setbit(dhdp->eventmask, WLC_E_AUTH);
2185 setbit(dhdp->eventmask, WLC_E_REASSOC);
2186 setbit(dhdp->eventmask, WLC_E_REASSOC_IND);
2187 setbit(dhdp->eventmask, WLC_E_DEAUTH_IND);
2188 setbit(dhdp->eventmask, WLC_E_DISASSOC_IND);
2189 setbit(dhdp->eventmask, WLC_E_DISASSOC);
2190 setbit(dhdp->eventmask, WLC_E_JOIN);
2191 setbit(dhdp->eventmask, WLC_E_ASSOC_IND);
2192 setbit(dhdp->eventmask, WLC_E_PSK_SUP);
2193 setbit(dhdp->eventmask, WLC_E_LINK);
2194 setbit(dhdp->eventmask, WLC_E_NDIS_LINK);
2195 setbit(dhdp->eventmask, WLC_E_MIC_ERROR);
2196 setbit(dhdp->eventmask, WLC_E_PMKID_CACHE);
2197 setbit(dhdp->eventmask, WLC_E_TXFAIL);
2198 setbit(dhdp->eventmask, WLC_E_JOIN_START);
2199 setbit(dhdp->eventmask, WLC_E_SCAN_COMPLETE);
2200 #ifdef PNO_SUPPORT
2201 setbit(dhdp->eventmask, WLC_E_PFN_NET_FOUND);
2202 #endif /* PNO_SUPPORT */
2203
2204 /* enable dongle roaming event */
2205
2206 dhdp->pktfilter_count = 1;
2207 /* Setup filter to allow only unicast */
2208 dhdp->pktfilter[0] = "100 0 0 0 0x01 0x00";
2209 #endif /* EMBEDDED_PLATFORM */
2210
2211 /* Bus is ready, do any protocol initialization */
2212 ret = dhd_prot_init(&dhd->pub);
2213 if (ret < 0)
2214 return ret;
2215
2216 return 0;
2217 }
2218
2219 int
2220 dhd_iovar(dhd_pub_t *pub, int ifidx, char *name, char *cmd_buf, uint cmd_len,
2221 int set)
2222 {
2223 char buf[strlen(name) + 1 + cmd_len];
2224 int len = sizeof(buf);
2225 wl_ioctl_t ioc;
2226 int ret;
2227
2228 len = bcm_mkiovar(name, cmd_buf, cmd_len, buf, len);
2229
2230 memset(&ioc, 0, sizeof(ioc));
2231
2232 ioc.cmd = set ? WLC_SET_VAR : WLC_GET_VAR;
2233 ioc.buf = buf;
2234 ioc.len = len;
2235 ioc.set = set;
2236
2237 ret = dhd_prot_ioctl(pub, ifidx, &ioc, ioc.buf, ioc.len);
2238 if (!set && ret >= 0)
2239 memcpy(cmd_buf, buf, cmd_len);
2240
2241 return ret;
2242 }
2243
2244 static struct net_device_ops dhd_ops_pri = {
2245 .ndo_open = dhd_open,
2246 .ndo_stop = dhd_stop,
2247 .ndo_get_stats = dhd_get_stats,
2248 .ndo_do_ioctl = dhd_ioctl_entry,
2249 .ndo_start_xmit = dhd_start_xmit,
2250 .ndo_set_mac_address = dhd_set_mac_address,
2251 .ndo_set_multicast_list = dhd_set_multicast_list
2252 };
2253
2254 static struct net_device_ops dhd_ops_virt = {
2255 .ndo_get_stats = dhd_get_stats,
2256 .ndo_do_ioctl = dhd_ioctl_entry,
2257 .ndo_start_xmit = dhd_start_xmit,
2258 .ndo_set_mac_address = dhd_set_mac_address,
2259 .ndo_set_multicast_list = dhd_set_multicast_list
2260 };
2261
2262 int dhd_net_attach(dhd_pub_t *dhdp, int ifidx)
2263 {
2264 dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
2265 struct net_device *net;
2266 u8 temp_addr[ETHER_ADDR_LEN] = {
2267 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33};
2268
2269 DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));
2270
2271 ASSERT(dhd && dhd->iflist[ifidx]);
2272
2273 net = dhd->iflist[ifidx]->net;
2274 ASSERT(net);
2275
2276 ASSERT(!net->netdev_ops);
2277 net->netdev_ops = &dhd_ops_pri;
2278
2279 /*
2280 * We have to use the primary MAC for virtual interfaces
2281 */
2282 if (ifidx != 0) {
2283 /* for virtual interfaces use the primary MAC */
2284 memcpy(temp_addr, dhd->pub.mac.octet, ETHER_ADDR_LEN);
2285
2286 }
2287
2288 if (ifidx == 1) {
2289 DHD_TRACE(("%s ACCESS POINT MAC: \n", __func__));
2290 /* ACCESSPOINT INTERFACE CASE */
2291 temp_addr[0] |= 0X02; /* set bit 2 ,
2292 - Locally Administered address */
2293
2294 }
2295 net->hard_header_len = ETH_HLEN + dhd->pub.hdrlen;
2296 net->ethtool_ops = &dhd_ethtool_ops;
2297
2298 #if defined(CONFIG_WIRELESS_EXT)
2299 if (!IS_CFG80211_FAVORITE()) {
2300 #if WIRELESS_EXT < 19
2301 net->get_wireless_stats = dhd_get_wireless_stats;
2302 #endif /* WIRELESS_EXT < 19 */
2303 #if WIRELESS_EXT > 12
2304 net->wireless_handlers =
2305 (struct iw_handler_def *)&wl_iw_handler_def;
2306 #endif /* WIRELESS_EXT > 12 */
2307 }
2308 #endif /* defined(CONFIG_WIRELESS_EXT) */
2309
2310 dhd->pub.rxsz = net->mtu + net->hard_header_len + dhd->pub.hdrlen;
2311
2312 memcpy(net->dev_addr, temp_addr, ETHER_ADDR_LEN);
2313
2314 if (register_netdev(net) != 0) {
2315 DHD_ERROR(("%s: couldn't register the net device\n",
2316 __func__));
2317 goto fail;
2318 }
2319
2320 printf("%s: Broadcom Dongle Host Driver\n", net->name);
2321
2322 return 0;
2323
2324 fail:
2325 net->netdev_ops = NULL;
2326 return BCME_ERROR;
2327 }
2328
2329 void dhd_bus_detach(dhd_pub_t *dhdp)
2330 {
2331 dhd_info_t *dhd;
2332
2333 DHD_TRACE(("%s: Enter\n", __func__));
2334
2335 if (dhdp) {
2336 dhd = (dhd_info_t *) dhdp->info;
2337 if (dhd) {
2338 /* Stop the protocol module */
2339 dhd_prot_stop(&dhd->pub);
2340
2341 /* Stop the bus module */
2342 dhd_bus_stop(dhd->pub.bus, true);
2343 #if defined(OOB_INTR_ONLY)
2344 bcmsdh_unregister_oob_intr();
2345 #endif /* defined(OOB_INTR_ONLY) */
2346
2347 /* Clear the watchdog timer */
2348 del_timer_sync(&dhd->timer);
2349 dhd->wd_timer_valid = false;
2350 }
2351 }
2352 }
2353
2354 void dhd_detach(dhd_pub_t *dhdp)
2355 {
2356 dhd_info_t *dhd;
2357
2358 DHD_TRACE(("%s: Enter\n", __func__));
2359
2360 if (dhdp) {
2361 dhd = (dhd_info_t *) dhdp->info;
2362 if (dhd) {
2363 dhd_if_t *ifp;
2364 int i;
2365
2366 #if defined(CONFIG_HAS_EARLYSUSPEND)
2367 if (dhd->early_suspend.suspend)
2368 unregister_early_suspend(&dhd->early_suspend);
2369 #endif /* defined(CONFIG_HAS_EARLYSUSPEND) */
2370
2371 for (i = 1; i < DHD_MAX_IFS; i++)
2372 if (dhd->iflist[i])
2373 dhd_del_if(dhd, i);
2374
2375 ifp = dhd->iflist[0];
2376 ASSERT(ifp);
2377 if (ifp->net->netdev_ops == &dhd_ops_pri) {
2378 dhd_stop(ifp->net);
2379 unregister_netdev(ifp->net);
2380 }
2381
2382 if (dhd->watchdog_tsk) {
2383 send_sig(SIGTERM, dhd->watchdog_tsk, 1);
2384 kthread_stop(dhd->watchdog_tsk);
2385 dhd->watchdog_tsk = NULL;
2386 }
2387
2388 if (dhd->dpc_tsk) {
2389 send_sig(SIGTERM, dhd->dpc_tsk, 1);
2390 kthread_stop(dhd->dpc_tsk);
2391 dhd->dpc_tsk = NULL;
2392 } else
2393 tasklet_kill(&dhd->tasklet);
2394
2395 if (dhd->sysioc_tsk) {
2396 send_sig(SIGTERM, dhd->sysioc_tsk, 1);
2397 kthread_stop(dhd->sysioc_tsk);
2398 dhd->sysioc_tsk = NULL;
2399 }
2400
2401 dhd_bus_detach(dhdp);
2402
2403 if (dhdp->prot)
2404 dhd_prot_detach(dhdp);
2405
2406 #if defined(CONFIG_WIRELESS_EXT)
2407 wl_iw_detach();
2408 #endif /* (CONFIG_WIRELESS_EXT) */
2409
2410 if (IS_CFG80211_FAVORITE())
2411 wl_cfg80211_detach();
2412
2413 #if defined(CONFIG_PM_SLEEP)
2414 unregister_pm_notifier(&dhd_sleep_pm_notifier);
2415 #endif /* defined(CONFIG_PM_SLEEP) */
2416 /* && defined(DHD_GPL) */
2417 WAKE_LOCK_DESTROY(dhdp, WAKE_LOCK_TMOUT);
2418 WAKE_LOCK_DESTROY(dhdp, WAKE_LOCK_LINK_DOWN_TMOUT);
2419 WAKE_LOCK_DESTROY(dhdp, WAKE_LOCK_PNO_FIND_TMOUT);
2420 free_netdev(ifp->net);
2421 kfree(ifp);
2422 kfree(dhd);
2423 }
2424 }
2425 }
2426
2427 static void __exit dhd_module_cleanup(void)
2428 {
2429 DHD_TRACE(("%s: Enter\n", __func__));
2430
2431 dhd_bus_unregister();
2432 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2433 wifi_del_dev();
2434 #endif
2435 /* Call customer gpio to turn off power with WL_REG_ON signal */
2436 dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
2437 }
2438
2439 static int __init dhd_module_init(void)
2440 {
2441 int error;
2442
2443 DHD_TRACE(("%s: Enter\n", __func__));
2444
2445 /* Sanity check on the module parameters */
2446 do {
2447 /* Both watchdog and DPC as tasklets are ok */
2448 if ((dhd_watchdog_prio < 0) && (dhd_dpc_prio < 0))
2449 break;
2450
2451 /* If both watchdog and DPC are threads, TX must be deferred */
2452 if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0)
2453 && dhd_deferred_tx)
2454 break;
2455
2456 DHD_ERROR(("Invalid module parameters.\n"));
2457 return -EINVAL;
2458 } while (0);
2459 /* Call customer gpio to turn on power with WL_REG_ON signal */
2460 dhd_customer_gpio_wlan_ctrl(WLAN_POWER_ON);
2461
2462 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2463 sema_init(&wifi_control_sem, 0);
2464
2465 error = wifi_add_dev();
2466 if (error) {
2467 DHD_ERROR(("%s: platform_driver_register failed\n", __func__));
2468 goto faild;
2469 }
2470
2471 /* Waiting callback after platform_driver_register is done or
2472 exit with error */
2473 if (down_timeout(&wifi_control_sem, msecs_to_jiffies(1000)) != 0) {
2474 printk(KERN_ERR "%s: platform_driver_register timeout\n",
2475 __func__);
2476 /* remove device */
2477 wifi_del_dev();
2478 goto faild;
2479 }
2480 #endif /* #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC) */
2481
2482 error = dhd_bus_register();
2483
2484 if (!error)
2485 printf("\n%s\n", dhd_version);
2486 else {
2487 DHD_ERROR(("%s: sdio_register_driver failed\n", __func__));
2488 goto faild;
2489 }
2490 return error;
2491
2492 faild:
2493 /* turn off power and exit */
2494 dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
2495 return -EINVAL;
2496 }
2497
2498 module_init(dhd_module_init);
2499 module_exit(dhd_module_cleanup);
2500
2501 /*
2502 * OS specific functions required to implement DHD driver in OS independent way
2503 */
2504 int dhd_os_proto_block(dhd_pub_t *pub)
2505 {
2506 dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2507
2508 if (dhd) {
2509 down(&dhd->proto_sem);
2510 return 1;
2511 }
2512 return 0;
2513 }
2514
2515 int dhd_os_proto_unblock(dhd_pub_t *pub)
2516 {
2517 dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2518
2519 if (dhd) {
2520 up(&dhd->proto_sem);
2521 return 1;
2522 }
2523
2524 return 0;
2525 }
2526
2527 unsigned int dhd_os_get_ioctl_resp_timeout(void)
2528 {
2529 return (unsigned int)dhd_ioctl_timeout_msec;
2530 }
2531
2532 void dhd_os_set_ioctl_resp_timeout(unsigned int timeout_msec)
2533 {
2534 dhd_ioctl_timeout_msec = (int)timeout_msec;
2535 }
2536
2537 int dhd_os_ioctl_resp_wait(dhd_pub_t *pub, uint *condition, bool *pending)
2538 {
2539 dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2540 DECLARE_WAITQUEUE(wait, current);
2541 int timeout = dhd_ioctl_timeout_msec;
2542
2543 /* Convert timeout in millsecond to jiffies */
2544 timeout = timeout * HZ / 1000;
2545
2546 /* Wait until control frame is available */
2547 add_wait_queue(&dhd->ioctl_resp_wait, &wait);
2548 set_current_state(TASK_INTERRUPTIBLE);
2549
2550 while (!(*condition) && (!signal_pending(current) && timeout))
2551 timeout = schedule_timeout(timeout);
2552
2553 if (signal_pending(current))
2554 *pending = true;
2555
2556 set_current_state(TASK_RUNNING);
2557 remove_wait_queue(&dhd->ioctl_resp_wait, &wait);
2558
2559 return timeout;
2560 }
2561
2562 int dhd_os_ioctl_resp_wake(dhd_pub_t *pub)
2563 {
2564 dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2565
2566 if (waitqueue_active(&dhd->ioctl_resp_wait))
2567 wake_up_interruptible(&dhd->ioctl_resp_wait);
2568
2569 return 0;
2570 }
2571
2572 void dhd_os_wd_timer(void *bus, uint wdtick)
2573 {
2574 dhd_pub_t *pub = bus;
2575 static uint save_dhd_watchdog_ms;
2576 dhd_info_t *dhd = (dhd_info_t *) pub->info;
2577
2578 /* don't start the wd until fw is loaded */
2579 if (pub->busstate == DHD_BUS_DOWN)
2580 return;
2581
2582 /* Totally stop the timer */
2583 if (!wdtick && dhd->wd_timer_valid == true) {
2584 del_timer_sync(&dhd->timer);
2585 dhd->wd_timer_valid = false;
2586 save_dhd_watchdog_ms = wdtick;
2587 return;
2588 }
2589
2590 if (wdtick) {
2591 dhd_watchdog_ms = (uint) wdtick;
2592
2593 if (save_dhd_watchdog_ms != dhd_watchdog_ms) {
2594
2595 if (dhd->wd_timer_valid == true)
2596 /* Stop timer and restart at new value */
2597 del_timer_sync(&dhd->timer);
2598
2599 /* Create timer again when watchdog period is
2600 dynamically changed or in the first instance
2601 */
2602 dhd->timer.expires =
2603 jiffies + dhd_watchdog_ms * HZ / 1000;
2604 add_timer(&dhd->timer);
2605
2606 } else {
2607 /* Re arm the timer, at last watchdog period */
2608 mod_timer(&dhd->timer,
2609 jiffies + dhd_watchdog_ms * HZ / 1000);
2610 }
2611
2612 dhd->wd_timer_valid = true;
2613 save_dhd_watchdog_ms = wdtick;
2614 }
2615 }
2616
2617 void *dhd_os_open_image(char *filename)
2618 {
2619 struct file *fp;
2620
2621 if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2622 return wl_cfg80211_request_fw(filename);
2623
2624 fp = filp_open(filename, O_RDONLY, 0);
2625 /*
2626 * 2.6.11 (FC4) supports filp_open() but later revs don't?
2627 * Alternative:
2628 * fp = open_namei(AT_FDCWD, filename, O_RD, 0);
2629 * ???
2630 */
2631 if (IS_ERR(fp))
2632 fp = NULL;
2633
2634 return fp;
2635 }
2636
2637 int dhd_os_get_image_block(char *buf, int len, void *image)
2638 {
2639 struct file *fp = (struct file *)image;
2640 int rdlen;
2641
2642 if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2643 return wl_cfg80211_read_fw(buf, len);
2644
2645 if (!image)
2646 return 0;
2647
2648 rdlen = kernel_read(fp, fp->f_pos, buf, len);
2649 if (rdlen > 0)
2650 fp->f_pos += rdlen;
2651
2652 return rdlen;
2653 }
2654
2655 void dhd_os_close_image(void *image)
2656 {
2657 if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2658 return wl_cfg80211_release_fw();
2659 if (image)
2660 filp_close((struct file *)image, NULL);
2661 }
2662
2663 void dhd_os_sdlock(dhd_pub_t *pub)
2664 {
2665 dhd_info_t *dhd;
2666
2667 dhd = (dhd_info_t *) (pub->info);
2668
2669 if (dhd->threads_only)
2670 down(&dhd->sdsem);
2671 else
2672 spin_lock_bh(&dhd->sdlock);
2673 }
2674
2675 void dhd_os_sdunlock(dhd_pub_t *pub)
2676 {
2677 dhd_info_t *dhd;
2678
2679 dhd = (dhd_info_t *) (pub->info);
2680
2681 if (dhd->threads_only)
2682 up(&dhd->sdsem);
2683 else
2684 spin_unlock_bh(&dhd->sdlock);
2685 }
2686
2687 void dhd_os_sdlock_txq(dhd_pub_t *pub)
2688 {
2689 dhd_info_t *dhd;
2690
2691 dhd = (dhd_info_t *) (pub->info);
2692 spin_lock_bh(&dhd->txqlock);
2693 }
2694
2695 void dhd_os_sdunlock_txq(dhd_pub_t *pub)
2696 {
2697 dhd_info_t *dhd;
2698
2699 dhd = (dhd_info_t *) (pub->info);
2700 spin_unlock_bh(&dhd->txqlock);
2701 }
2702
2703 void dhd_os_sdlock_rxq(dhd_pub_t *pub)
2704 {
2705 }
2706
2707 void dhd_os_sdunlock_rxq(dhd_pub_t *pub)
2708 {
2709 }
2710
2711 void dhd_os_sdtxlock(dhd_pub_t *pub)
2712 {
2713 dhd_os_sdlock(pub);
2714 }
2715
2716 void dhd_os_sdtxunlock(dhd_pub_t *pub)
2717 {
2718 dhd_os_sdunlock(pub);
2719 }
2720
2721 #if defined(CONFIG_WIRELESS_EXT)
2722 struct iw_statistics *dhd_get_wireless_stats(struct net_device *dev)
2723 {
2724 int res = 0;
2725 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2726
2727 res = wl_iw_get_wireless_stats(dev, &dhd->iw.wstats);
2728
2729 if (res == 0)
2730 return &dhd->iw.wstats;
2731 else
2732 return NULL;
2733 }
2734 #endif /* defined(CONFIG_WIRELESS_EXT) */
2735
2736 static int
2737 dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
2738 wl_event_msg_t *event, void **data)
2739 {
2740 int bcmerror = 0;
2741
2742 ASSERT(dhd != NULL);
2743
2744 bcmerror = wl_host_event(dhd, ifidx, pktdata, event, data);
2745 if (bcmerror != BCME_OK)
2746 return bcmerror;
2747
2748 #if defined(CONFIG_WIRELESS_EXT)
2749 if (!IS_CFG80211_FAVORITE()) {
2750 if ((dhd->iflist[*ifidx] == NULL)
2751 || (dhd->iflist[*ifidx]->net == NULL)) {
2752 DHD_ERROR(("%s Exit null pointer\n", __func__));
2753 return bcmerror;
2754 }
2755
2756 if (dhd->iflist[*ifidx]->net)
2757 wl_iw_event(dhd->iflist[*ifidx]->net, event, *data);
2758 }
2759 #endif /* defined(CONFIG_WIRELESS_EXT) */
2760
2761 if (IS_CFG80211_FAVORITE()) {
2762 ASSERT(dhd->iflist[*ifidx] != NULL);
2763 ASSERT(dhd->iflist[*ifidx]->net != NULL);
2764 if (dhd->iflist[*ifidx]->net)
2765 wl_cfg80211_event(dhd->iflist[*ifidx]->net, event,
2766 *data);
2767 }
2768
2769 return bcmerror;
2770 }
2771
2772 /* send up locally generated event */
2773 void dhd_sendup_event(dhd_pub_t *dhdp, wl_event_msg_t *event, void *data)
2774 {
2775 switch (ntoh32(event->event_type)) {
2776 default:
2777 break;
2778 }
2779 }
2780
2781 void dhd_wait_for_event(dhd_pub_t *dhd, bool *lockvar)
2782 {
2783 struct dhd_info *dhdinfo = dhd->info;
2784 dhd_os_sdunlock(dhd);
2785 wait_event_interruptible_timeout(dhdinfo->ctrl_wait,
2786 (*lockvar == false), HZ * 2);
2787 dhd_os_sdlock(dhd);
2788 return;
2789 }
2790
2791 void dhd_wait_event_wakeup(dhd_pub_t *dhd)
2792 {
2793 struct dhd_info *dhdinfo = dhd->info;
2794 if (waitqueue_active(&dhdinfo->ctrl_wait))
2795 wake_up_interruptible(&dhdinfo->ctrl_wait);
2796 return;
2797 }
2798
2799 int dhd_dev_reset(struct net_device *dev, u8 flag)
2800 {
2801 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2802
2803 /* Turning off watchdog */
2804 if (flag)
2805 dhd_os_wd_timer(&dhd->pub, 0);
2806
2807 dhd_bus_devreset(&dhd->pub, flag);
2808
2809 /* Turning on watchdog back */
2810 if (!flag)
2811 dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
2812 DHD_ERROR(("%s: WLAN OFF DONE\n", __func__));
2813
2814 return 1;
2815 }
2816
2817 int net_os_set_suspend_disable(struct net_device *dev, int val)
2818 {
2819 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2820 int ret = 0;
2821
2822 if (dhd) {
2823 ret = dhd->pub.suspend_disable_flag;
2824 dhd->pub.suspend_disable_flag = val;
2825 }
2826 return ret;
2827 }
2828
2829 int net_os_set_suspend(struct net_device *dev, int val)
2830 {
2831 int ret = 0;
2832 #if defined(CONFIG_HAS_EARLYSUSPEND)
2833 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2834
2835 if (dhd) {
2836 dhd_os_proto_block(&dhd->pub);
2837 ret = dhd_set_suspend(val, &dhd->pub);
2838 dhd_os_proto_unblock(&dhd->pub);
2839 }
2840 #endif /* defined(CONFIG_HAS_EARLYSUSPEND) */
2841 return ret;
2842 }
2843
2844 int net_os_set_dtim_skip(struct net_device *dev, int val)
2845 {
2846 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2847
2848 if (dhd)
2849 dhd->pub.dtim_skip = val;
2850
2851 return 0;
2852 }
2853
2854 int net_os_set_packet_filter(struct net_device *dev, int val)
2855 {
2856 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2857 int ret = 0;
2858
2859 /* Packet filtering is set only if we still in early-suspend and
2860 * we need either to turn it ON or turn it OFF
2861 * We can always turn it OFF in case of early-suspend, but we turn it
2862 * back ON only if suspend_disable_flag was not set
2863 */
2864 if (dhd && dhd->pub.up) {
2865 dhd_os_proto_block(&dhd->pub);
2866 if (dhd->pub.in_suspend) {
2867 if (!val || (val && !dhd->pub.suspend_disable_flag))
2868 dhd_set_packet_filter(val, &dhd->pub);
2869 }
2870 dhd_os_proto_unblock(&dhd->pub);
2871 }
2872 return ret;
2873 }
2874
2875 void dhd_dev_init_ioctl(struct net_device *dev)
2876 {
2877 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2878
2879 dhd_preinit_ioctls(&dhd->pub);
2880 }
2881
2882 #ifdef PNO_SUPPORT
2883 /* Linux wrapper to call common dhd_pno_clean */
2884 int dhd_dev_pno_reset(struct net_device *dev)
2885 {
2886 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2887
2888 return dhd_pno_clean(&dhd->pub);
2889 }
2890
2891 /* Linux wrapper to call common dhd_pno_enable */
2892 int dhd_dev_pno_enable(struct net_device *dev, int pfn_enabled)
2893 {
2894 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2895
2896 return dhd_pno_enable(&dhd->pub, pfn_enabled);
2897 }
2898
2899 /* Linux wrapper to call common dhd_pno_set */
2900 int
2901 dhd_dev_pno_set(struct net_device *dev, wlc_ssid_t *ssids_local, int nssid,
2902 unsigned char scan_fr)
2903 {
2904 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2905
2906 return dhd_pno_set(&dhd->pub, ssids_local, nssid, scan_fr);
2907 }
2908
2909 /* Linux wrapper to get pno status */
2910 int dhd_dev_get_pno_status(struct net_device *dev)
2911 {
2912 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2913
2914 return dhd_pno_get_status(&dhd->pub);
2915 }
2916
2917 #endif /* PNO_SUPPORT */
2918
2919 static int dhd_get_pend_8021x_cnt(dhd_info_t *dhd)
2920 {
2921 return atomic_read(&dhd->pend_8021x_cnt);
2922 }
2923
2924 #define MAX_WAIT_FOR_8021X_TX 10
2925
2926 int dhd_wait_pend8021x(struct net_device *dev)
2927 {
2928 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2929 int timeout = 10 * HZ / 1000;
2930 int ntimes = MAX_WAIT_FOR_8021X_TX;
2931 int pend = dhd_get_pend_8021x_cnt(dhd);
2932
2933 while (ntimes && pend) {
2934 if (pend) {
2935 set_current_state(TASK_INTERRUPTIBLE);
2936 schedule_timeout(timeout);
2937 set_current_state(TASK_RUNNING);
2938 ntimes--;
2939 }
2940 pend = dhd_get_pend_8021x_cnt(dhd);
2941 }
2942 return pend;
2943 }
2944
2945 #ifdef DHD_DEBUG
2946 int write_to_file(dhd_pub_t *dhd, u8 *buf, int size)
2947 {
2948 int ret = 0;
2949 struct file *fp;
2950 mm_segment_t old_fs;
2951 loff_t pos = 0;
2952
2953 /* change to KERNEL_DS address limit */
2954 old_fs = get_fs();
2955 set_fs(KERNEL_DS);
2956
2957 /* open file to write */
2958 fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
2959 if (!fp) {
2960 printf("%s: open file error\n", __func__);
2961 ret = -1;
2962 goto exit;
2963 }
2964
2965 /* Write buf to file */
2966 fp->f_op->write(fp, buf, size, &pos);
2967
2968 exit:
2969 /* free buf before return */
2970 kfree(buf);
2971 /* close file before return */
2972 if (fp)
2973 filp_close(fp, current->files);
2974 /* restore previous address limit */
2975 set_fs(old_fs);
2976
2977 return ret;
2978 }
2979 #endif /* DHD_DEBUG */
Linux kernel - Deliverables
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