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Merge Linus's tree into staging-next
[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 <net/cfg80211.h>
35 #include <defs.h>
36 #include <brcmu_utils.h>
37 #include <brcmu_wifi.h>
38
39 #include <dngl_stats.h>
40 #include <dhd.h>
41 #include <dhd_bus.h>
42 #include <dhd_proto.h>
43 #include <dhd_dbg.h>
44
45 #include <wl_cfg80211.h>
46
47 #define EPI_VERSION_STR "4.218.248.5"
48 #define ETH_P_BRCM 0x886c
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 = KBUILD_MODNAME,
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 atomic_t dhd_mmc_suspend;
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[ETH_ALEN]; /* 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 u8 macvalue[ETH_ALEN];
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] = "wlan";
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 void dhd_dpc(unsigned long data);
391 /* forward decl */
392 extern int dhd_wait_pend8021x(struct net_device *dev);
393
394 #ifdef TOE
395 #ifndef BDC
396 #error TOE requires BDC
397 #endif /* !BDC */
398 static int dhd_toe_get(dhd_info_t *dhd, int idx, u32 *toe_ol);
399 static int dhd_toe_set(dhd_info_t *dhd, int idx, u32 toe_ol);
400 #endif /* TOE */
401
402 static int dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
403 wl_event_msg_t *event_ptr, void **data_ptr);
404
405 #if defined(CONFIG_PM_SLEEP)
406 static int dhd_sleep_pm_callback(struct notifier_block *nfb,
407 unsigned long action, void *ignored)
408 {
409 switch (action) {
410 case PM_HIBERNATION_PREPARE:
411 case PM_SUSPEND_PREPARE:
412 atomic_set(&dhd_mmc_suspend, true);
413 return NOTIFY_OK;
414 case PM_POST_HIBERNATION:
415 case PM_POST_SUSPEND:
416 atomic_set(&dhd_mmc_suspend, false);
417 return NOTIFY_OK;
418 }
419 return 0;
420 }
421
422 static struct notifier_block dhd_sleep_pm_notifier = {
423 .notifier_call = dhd_sleep_pm_callback,
424 .priority = 0
425 };
426
427 extern int register_pm_notifier(struct notifier_block *nb);
428 extern int unregister_pm_notifier(struct notifier_block *nb);
429 #endif /* defined(CONFIG_PM_SLEEP) */
430 /* && defined(DHD_GPL) */
431 static void dhd_set_packet_filter(int value, dhd_pub_t *dhd)
432 {
433 #ifdef PKT_FILTER_SUPPORT
434 DHD_TRACE(("%s: %d\n", __func__, value));
435 /* 1 - Enable packet filter, only allow unicast packet to send up */
436 /* 0 - Disable packet filter */
437 if (dhd_pkt_filter_enable) {
438 int i;
439
440 for (i = 0; i < dhd->pktfilter_count; i++) {
441 dhd_pktfilter_offload_set(dhd, dhd->pktfilter[i]);
442 dhd_pktfilter_offload_enable(dhd, dhd->pktfilter[i],
443 value, dhd_master_mode);
444 }
445 }
446 #endif
447 }
448
449 #if defined(CONFIG_HAS_EARLYSUSPEND)
450 static int dhd_set_suspend(int value, dhd_pub_t *dhd)
451 {
452 int power_mode = PM_MAX;
453 /* wl_pkt_filter_enable_t enable_parm; */
454 char iovbuf[32];
455 int bcn_li_dtim = 3;
456 #ifdef CUSTOMER_HW2
457 uint roamvar = 1;
458 #endif /* CUSTOMER_HW2 */
459
460 DHD_TRACE(("%s: enter, value = %d in_suspend=%d\n",
461 __func__, value, dhd->in_suspend));
462
463 if (dhd && dhd->up) {
464 if (value && dhd->in_suspend) {
465
466 /* Kernel suspended */
467 DHD_TRACE(("%s: force extra Suspend setting\n",
468 __func__));
469
470 dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
471 (char *)&power_mode,
472 sizeof(power_mode));
473
474 /* Enable packet filter, only allow unicast
475 packet to send up */
476 dhd_set_packet_filter(1, dhd);
477
478 /* if dtim skip setup as default force it
479 * to wake each third dtim
480 * for better power saving.
481 * Note that side effect is chance to miss BC/MC
482 * packet
483 */
484 if ((dhd->dtim_skip == 0) || (dhd->dtim_skip == 1))
485 bcn_li_dtim = 3;
486 else
487 bcn_li_dtim = dhd->dtim_skip;
488 brcmu_mkiovar("bcn_li_dtim", (char *)&bcn_li_dtim,
489 4, iovbuf, sizeof(iovbuf));
490 dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
491 sizeof(iovbuf));
492 #ifdef CUSTOMER_HW2
493 /* Disable build-in roaming to allowed \
494 * supplicant to take of romaing
495 */
496 brcmu_mkiovar("roam_off", (char *)&roamvar, 4,
497 iovbuf, sizeof(iovbuf));
498 dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
499 sizeof(iovbuf));
500 #endif /* CUSTOMER_HW2 */
501 } else {
502
503 /* Kernel resumed */
504 DHD_TRACE(("%s: Remove extra suspend setting\n",
505 __func__));
506
507 power_mode = PM_FAST;
508 dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
509 (char *)&power_mode,
510 sizeof(power_mode));
511
512 /* disable pkt filter */
513 dhd_set_packet_filter(0, dhd);
514
515 /* restore pre-suspend setting for dtim_skip */
516 brcmu_mkiovar("bcn_li_dtim", (char *)&dhd->dtim_skip,
517 4, iovbuf, sizeof(iovbuf));
518
519 dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
520 sizeof(iovbuf));
521 #ifdef CUSTOMER_HW2
522 roamvar = 0;
523 brcmu_mkiovar("roam_off", (char *)&roamvar, 4, iovbuf,
524 sizeof(iovbuf));
525 dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
526 sizeof(iovbuf));
527 #endif /* CUSTOMER_HW2 */
528 }
529 }
530
531 return 0;
532 }
533
534 static void dhd_suspend_resume_helper(struct dhd_info *dhd, int val)
535 {
536 dhd_pub_t *dhdp = &dhd->pub;
537
538 dhd_os_proto_block(dhdp);
539 /* Set flag when early suspend was called */
540 dhdp->in_suspend = val;
541 if (!dhdp->suspend_disable_flag)
542 dhd_set_suspend(val, dhdp);
543 dhd_os_proto_unblock(dhdp);
544 }
545
546 static void dhd_early_suspend(struct early_suspend *h)
547 {
548 struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
549
550 DHD_TRACE(("%s: enter\n", __func__));
551
552 if (dhd)
553 dhd_suspend_resume_helper(dhd, 1);
554
555 }
556
557 static void dhd_late_resume(struct early_suspend *h)
558 {
559 struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
560
561 DHD_TRACE(("%s: enter\n", __func__));
562
563 if (dhd)
564 dhd_suspend_resume_helper(dhd, 0);
565 }
566 #endif /* defined(CONFIG_HAS_EARLYSUSPEND) */
567
568 /*
569 * Generalized timeout mechanism. Uses spin sleep with exponential
570 * back-off until
571 * the sleep time reaches one jiffy, then switches over to task delay. Usage:
572 *
573 * dhd_timeout_start(&tmo, usec);
574 * while (!dhd_timeout_expired(&tmo))
575 * if (poll_something())
576 * break;
577 * if (dhd_timeout_expired(&tmo))
578 * fatal();
579 */
580
581 void dhd_timeout_start(dhd_timeout_t *tmo, uint usec)
582 {
583 tmo->limit = usec;
584 tmo->increment = 0;
585 tmo->elapsed = 0;
586 tmo->tick = 1000000 / HZ;
587 }
588
589 int dhd_timeout_expired(dhd_timeout_t *tmo)
590 {
591 /* Does nothing the first call */
592 if (tmo->increment == 0) {
593 tmo->increment = 1;
594 return 0;
595 }
596
597 if (tmo->elapsed >= tmo->limit)
598 return 1;
599
600 /* Add the delay that's about to take place */
601 tmo->elapsed += tmo->increment;
602
603 if (tmo->increment < tmo->tick) {
604 udelay(tmo->increment);
605 tmo->increment *= 2;
606 if (tmo->increment > tmo->tick)
607 tmo->increment = tmo->tick;
608 } else {
609 wait_queue_head_t delay_wait;
610 DECLARE_WAITQUEUE(wait, current);
611 int pending;
612 init_waitqueue_head(&delay_wait);
613 add_wait_queue(&delay_wait, &wait);
614 set_current_state(TASK_INTERRUPTIBLE);
615 schedule_timeout(1);
616 pending = signal_pending(current);
617 remove_wait_queue(&delay_wait, &wait);
618 set_current_state(TASK_RUNNING);
619 if (pending)
620 return 1; /* Interrupted */
621 }
622
623 return 0;
624 }
625
626 static int dhd_net2idx(dhd_info_t *dhd, struct net_device *net)
627 {
628 int i = 0;
629
630 ASSERT(dhd);
631 while (i < DHD_MAX_IFS) {
632 if (dhd->iflist[i] && (dhd->iflist[i]->net == net))
633 return i;
634 i++;
635 }
636
637 return DHD_BAD_IF;
638 }
639
640 int dhd_ifname2idx(dhd_info_t *dhd, char *name)
641 {
642 int i = DHD_MAX_IFS;
643
644 ASSERT(dhd);
645
646 if (name == NULL || *name == '\0')
647 return 0;
648
649 while (--i > 0)
650 if (dhd->iflist[i]
651 && !strncmp(dhd->iflist[i]->name, name, IFNAMSIZ))
652 break;
653
654 DHD_TRACE(("%s: return idx %d for \"%s\"\n", __func__, i, name));
655
656 return i; /* default - the primary interface */
657 }
658
659 char *dhd_ifname(dhd_pub_t *dhdp, int ifidx)
660 {
661 dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
662
663 ASSERT(dhd);
664
665 if (ifidx < 0 || ifidx >= DHD_MAX_IFS) {
666 DHD_ERROR(("%s: ifidx %d out of range\n", __func__, ifidx));
667 return "<if_bad>";
668 }
669
670 if (dhd->iflist[ifidx] == NULL) {
671 DHD_ERROR(("%s: null i/f %d\n", __func__, ifidx));
672 return "<if_null>";
673 }
674
675 if (dhd->iflist[ifidx]->net)
676 return dhd->iflist[ifidx]->net->name;
677
678 return "<if_none>";
679 }
680
681 static void _dhd_set_multicast_list(dhd_info_t *dhd, int ifidx)
682 {
683 struct net_device *dev;
684 struct netdev_hw_addr *ha;
685 u32 allmulti, cnt;
686
687 wl_ioctl_t ioc;
688 char *buf, *bufp;
689 uint buflen;
690 int ret;
691
692 ASSERT(dhd && dhd->iflist[ifidx]);
693 dev = dhd->iflist[ifidx]->net;
694 cnt = netdev_mc_count(dev);
695
696 /* Determine initial value of allmulti flag */
697 allmulti = (dev->flags & IFF_ALLMULTI) ? true : false;
698
699 /* Send down the multicast list first. */
700
701 buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETH_ALEN);
702 bufp = buf = kmalloc(buflen, GFP_ATOMIC);
703 if (!bufp) {
704 DHD_ERROR(("%s: out of memory for mcast_list, cnt %d\n",
705 dhd_ifname(&dhd->pub, ifidx), cnt));
706 return;
707 }
708
709 strcpy(bufp, "mcast_list");
710 bufp += strlen("mcast_list") + 1;
711
712 cnt = cpu_to_le32(cnt);
713 memcpy(bufp, &cnt, sizeof(cnt));
714 bufp += sizeof(cnt);
715
716 netdev_for_each_mc_addr(ha, dev) {
717 if (!cnt)
718 break;
719 memcpy(bufp, ha->addr, ETH_ALEN);
720 bufp += ETH_ALEN;
721 cnt--;
722 }
723
724 memset(&ioc, 0, sizeof(ioc));
725 ioc.cmd = WLC_SET_VAR;
726 ioc.buf = buf;
727 ioc.len = buflen;
728 ioc.set = true;
729
730 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
731 if (ret < 0) {
732 DHD_ERROR(("%s: set mcast_list failed, cnt %d\n",
733 dhd_ifname(&dhd->pub, ifidx), cnt));
734 allmulti = cnt ? true : allmulti;
735 }
736
737 kfree(buf);
738
739 /* Now send the allmulti setting. This is based on the setting in the
740 * net_device flags, but might be modified above to be turned on if we
741 * were trying to set some addresses and dongle rejected it...
742 */
743
744 buflen = sizeof("allmulti") + sizeof(allmulti);
745 buf = kmalloc(buflen, GFP_ATOMIC);
746 if (!buf) {
747 DHD_ERROR(("%s: out of memory for allmulti\n",
748 dhd_ifname(&dhd->pub, ifidx)));
749 return;
750 }
751 allmulti = cpu_to_le32(allmulti);
752
753 if (!brcmu_mkiovar
754 ("allmulti", (void *)&allmulti, sizeof(allmulti), buf, buflen)) {
755 DHD_ERROR(("%s: mkiovar failed for allmulti, datalen %d "
756 "buflen %u\n", dhd_ifname(&dhd->pub, ifidx),
757 (int)sizeof(allmulti), buflen));
758 kfree(buf);
759 return;
760 }
761
762 memset(&ioc, 0, sizeof(ioc));
763 ioc.cmd = WLC_SET_VAR;
764 ioc.buf = buf;
765 ioc.len = buflen;
766 ioc.set = true;
767
768 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
769 if (ret < 0) {
770 DHD_ERROR(("%s: set allmulti %d failed\n",
771 dhd_ifname(&dhd->pub, ifidx),
772 le32_to_cpu(allmulti)));
773 }
774
775 kfree(buf);
776
777 /* Finally, pick up the PROMISC flag as well, like the NIC
778 driver does */
779
780 allmulti = (dev->flags & IFF_PROMISC) ? true : false;
781 allmulti = cpu_to_le32(allmulti);
782
783 memset(&ioc, 0, sizeof(ioc));
784 ioc.cmd = WLC_SET_PROMISC;
785 ioc.buf = &allmulti;
786 ioc.len = sizeof(allmulti);
787 ioc.set = true;
788
789 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
790 if (ret < 0) {
791 DHD_ERROR(("%s: set promisc %d failed\n",
792 dhd_ifname(&dhd->pub, ifidx),
793 le32_to_cpu(allmulti)));
794 }
795 }
796
797 static int
798 _dhd_set_mac_address(dhd_info_t *dhd, int ifidx, u8 *addr)
799 {
800 char buf[32];
801 wl_ioctl_t ioc;
802 int ret;
803
804 DHD_TRACE(("%s enter\n", __func__));
805 if (!brcmu_mkiovar
806 ("cur_etheraddr", (char *)addr, ETH_ALEN, buf, 32)) {
807 DHD_ERROR(("%s: mkiovar failed for cur_etheraddr\n",
808 dhd_ifname(&dhd->pub, ifidx)));
809 return -1;
810 }
811 memset(&ioc, 0, sizeof(ioc));
812 ioc.cmd = WLC_SET_VAR;
813 ioc.buf = buf;
814 ioc.len = 32;
815 ioc.set = true;
816
817 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
818 if (ret < 0) {
819 DHD_ERROR(("%s: set cur_etheraddr failed\n",
820 dhd_ifname(&dhd->pub, ifidx)));
821 } else {
822 memcpy(dhd->iflist[ifidx]->net->dev_addr, addr, ETH_ALEN);
823 }
824
825 return ret;
826 }
827
828 #ifdef SOFTAP
829 extern struct net_device *ap_net_dev;
830 #endif
831
832 static void dhd_op_if(dhd_if_t *ifp)
833 {
834 dhd_info_t *dhd;
835 int ret = 0, err = 0;
836
837 ASSERT(ifp && ifp->info && ifp->idx); /* Virtual interfaces only */
838
839 dhd = ifp->info;
840
841 DHD_TRACE(("%s: idx %d, state %d\n", __func__, ifp->idx, ifp->state));
842
843 switch (ifp->state) {
844 case WLC_E_IF_ADD:
845 /*
846 * Delete the existing interface before overwriting it
847 * in case we missed the WLC_E_IF_DEL event.
848 */
849 if (ifp->net != NULL) {
850 DHD_ERROR(("%s: ERROR: netdev:%s already exists, "
851 "try free & unregister\n",
852 __func__, ifp->net->name));
853 netif_stop_queue(ifp->net);
854 unregister_netdev(ifp->net);
855 free_netdev(ifp->net);
856 }
857 /* Allocate etherdev, including space for private structure */
858 ifp->net = alloc_etherdev(sizeof(dhd));
859 if (!ifp->net) {
860 DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
861 ret = -ENOMEM;
862 }
863 if (ret == 0) {
864 strcpy(ifp->net->name, ifp->name);
865 memcpy(netdev_priv(ifp->net), &dhd, sizeof(dhd));
866 err = dhd_net_attach(&dhd->pub, ifp->idx);
867 if (err != 0) {
868 DHD_ERROR(("%s: dhd_net_attach failed, "
869 "err %d\n",
870 __func__, err));
871 ret = -EOPNOTSUPP;
872 } else {
873 #ifdef SOFTAP
874 /* semaphore that the soft AP CODE
875 waits on */
876 extern struct semaphore ap_eth_sema;
877
878 /* save ptr to wl0.1 netdev for use
879 in wl_iw.c */
880 ap_net_dev = ifp->net;
881 /* signal to the SOFTAP 'sleeper' thread,
882 wl0.1 is ready */
883 up(&ap_eth_sema);
884 #endif
885 DHD_TRACE(("\n ==== pid:%x, net_device for "
886 "if:%s created ===\n\n",
887 current->pid, ifp->net->name));
888 ifp->state = 0;
889 }
890 }
891 break;
892 case WLC_E_IF_DEL:
893 if (ifp->net != NULL) {
894 DHD_TRACE(("\n%s: got 'WLC_E_IF_DEL' state\n",
895 __func__));
896 netif_stop_queue(ifp->net);
897 unregister_netdev(ifp->net);
898 ret = DHD_DEL_IF; /* Make sure the free_netdev()
899 is called */
900 }
901 break;
902 default:
903 DHD_ERROR(("%s: bad op %d\n", __func__, ifp->state));
904 ASSERT(!ifp->state);
905 break;
906 }
907
908 if (ret < 0) {
909 if (ifp->net)
910 free_netdev(ifp->net);
911
912 dhd->iflist[ifp->idx] = NULL;
913 kfree(ifp);
914 #ifdef SOFTAP
915 if (ifp->net == ap_net_dev)
916 ap_net_dev = NULL; /* NULL SOFTAP global
917 wl0.1 as well */
918 #endif /* SOFTAP */
919 }
920 }
921
922 static int _dhd_sysioc_thread(void *data)
923 {
924 dhd_info_t *dhd = (dhd_info_t *) data;
925 int i;
926 #ifdef SOFTAP
927 bool in_ap = false;
928 #endif
929
930 allow_signal(SIGTERM);
931
932 while (down_interruptible(&dhd->sysioc_sem) == 0) {
933 if (kthread_should_stop())
934 break;
935 for (i = 0; i < DHD_MAX_IFS; i++) {
936 if (dhd->iflist[i]) {
937 #ifdef SOFTAP
938 in_ap = (ap_net_dev != NULL);
939 #endif /* SOFTAP */
940 if (dhd->iflist[i]->state)
941 dhd_op_if(dhd->iflist[i]);
942 #ifdef SOFTAP
943 if (dhd->iflist[i] == NULL) {
944 DHD_TRACE(("\n\n %s: interface %d "
945 "removed!\n", __func__, i));
946 continue;
947 }
948
949 if (in_ap && dhd->set_macaddress) {
950 DHD_TRACE(("attempt to set MAC for %s "
951 "in AP Mode," "blocked. \n",
952 dhd->iflist[i]->net->name));
953 dhd->set_macaddress = false;
954 continue;
955 }
956
957 if (in_ap && dhd->set_multicast) {
958 DHD_TRACE(("attempt to set MULTICAST list for %s" "in AP Mode, blocked. \n",
959 dhd->iflist[i]->net->name));
960 dhd->set_multicast = false;
961 continue;
962 }
963 #endif /* SOFTAP */
964 if (dhd->set_multicast) {
965 dhd->set_multicast = false;
966 _dhd_set_multicast_list(dhd, i);
967 }
968 if (dhd->set_macaddress) {
969 dhd->set_macaddress = false;
970 _dhd_set_mac_address(dhd, i,
971 dhd->macvalue);
972 }
973 }
974 }
975 }
976 return 0;
977 }
978
979 static int dhd_set_mac_address(struct net_device *dev, void *addr)
980 {
981 int ret = 0;
982
983 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
984 struct sockaddr *sa = (struct sockaddr *)addr;
985 int ifidx;
986
987 ifidx = dhd_net2idx(dhd, dev);
988 if (ifidx == DHD_BAD_IF)
989 return -1;
990
991 ASSERT(dhd->sysioc_tsk);
992 memcpy(&dhd->macvalue, sa->sa_data, ETH_ALEN);
993 dhd->set_macaddress = true;
994 up(&dhd->sysioc_sem);
995
996 return ret;
997 }
998
999 static void dhd_set_multicast_list(struct net_device *dev)
1000 {
1001 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
1002 int ifidx;
1003
1004 ifidx = dhd_net2idx(dhd, dev);
1005 if (ifidx == DHD_BAD_IF)
1006 return;
1007
1008 ASSERT(dhd->sysioc_tsk);
1009 dhd->set_multicast = true;
1010 up(&dhd->sysioc_sem);
1011 }
1012
1013 int dhd_sendpkt(dhd_pub_t *dhdp, int ifidx, struct sk_buff *pktbuf)
1014 {
1015 int ret;
1016 dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);
1017
1018 /* Reject if down */
1019 if (!dhdp->up || (dhdp->busstate == DHD_BUS_DOWN))
1020 return -ENODEV;
1021
1022 /* Update multicast statistic */
1023 if (pktbuf->len >= ETH_ALEN) {
1024 u8 *pktdata = (u8 *) (pktbuf->data);
1025 struct ethhdr *eh = (struct ethhdr *)pktdata;
1026
1027 if (is_multicast_ether_addr(eh->h_dest))
1028 dhdp->tx_multicast++;
1029 if (ntohs(eh->h_proto) == ETH_P_PAE)
1030 atomic_inc(&dhd->pend_8021x_cnt);
1031 }
1032
1033 /* If the protocol uses a data header, apply it */
1034 dhd_prot_hdrpush(dhdp, ifidx, pktbuf);
1035
1036 /* Use bus module to send data frame */
1037 #ifdef BCMDBUS
1038 ret = dbus_send_pkt(dhdp->dbus, pktbuf, NULL /* pktinfo */);
1039 #else
1040 ret = dhd_bus_txdata(dhdp->bus, pktbuf);
1041 #endif /* BCMDBUS */
1042
1043 return ret;
1044 }
1045
1046 static inline void *
1047 osl_pkt_frmnative(struct sk_buff *skb)
1048 {
1049 return (void *)skb;
1050 }
1051 #define PKTFRMNATIVE(osh, skb) \
1052 osl_pkt_frmnative((struct sk_buff *)(skb))
1053
1054 static inline struct sk_buff *
1055 osl_pkt_tonative(void *pkt)
1056 {
1057 return (struct sk_buff *)pkt;
1058 }
1059 #define PKTTONATIVE(osh, pkt) \
1060 osl_pkt_tonative((pkt))
1061
1062 static int dhd_start_xmit(struct sk_buff *skb, struct net_device *net)
1063 {
1064 int ret;
1065 void *pktbuf;
1066 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1067 int ifidx;
1068
1069 DHD_TRACE(("%s: Enter\n", __func__));
1070
1071 /* Reject if down */
1072 if (!dhd->pub.up || (dhd->pub.busstate == DHD_BUS_DOWN)) {
1073 DHD_ERROR(("%s: xmit rejected pub.up=%d busstate=%d\n",
1074 __func__, dhd->pub.up, dhd->pub.busstate));
1075 netif_stop_queue(net);
1076 return -ENODEV;
1077 }
1078
1079 ifidx = dhd_net2idx(dhd, net);
1080 if (ifidx == DHD_BAD_IF) {
1081 DHD_ERROR(("%s: bad ifidx %d\n", __func__, ifidx));
1082 netif_stop_queue(net);
1083 return -ENODEV;
1084 }
1085
1086 /* Make sure there's enough room for any header */
1087 if (skb_headroom(skb) < dhd->pub.hdrlen) {
1088 struct sk_buff *skb2;
1089
1090 DHD_INFO(("%s: insufficient headroom\n",
1091 dhd_ifname(&dhd->pub, ifidx)));
1092 dhd->pub.tx_realloc++;
1093 skb2 = skb_realloc_headroom(skb, dhd->pub.hdrlen);
1094 dev_kfree_skb(skb);
1095 skb = skb2;
1096 if (skb == NULL) {
1097 DHD_ERROR(("%s: skb_realloc_headroom failed\n",
1098 dhd_ifname(&dhd->pub, ifidx)));
1099 ret = -ENOMEM;
1100 goto done;
1101 }
1102 }
1103
1104 /* Convert to packet */
1105 pktbuf = PKTFRMNATIVE(dhd->pub.osh, skb);
1106 if (!pktbuf) {
1107 DHD_ERROR(("%s: PKTFRMNATIVE failed\n",
1108 dhd_ifname(&dhd->pub, ifidx)));
1109 dev_kfree_skb_any(skb);
1110 ret = -ENOMEM;
1111 goto done;
1112 }
1113
1114 ret = dhd_sendpkt(&dhd->pub, ifidx, pktbuf);
1115
1116 done:
1117 if (ret)
1118 dhd->pub.dstats.tx_dropped++;
1119 else
1120 dhd->pub.tx_packets++;
1121
1122 /* Return ok: we always eat the packet */
1123 return 0;
1124 }
1125
1126 void dhd_txflowcontrol(dhd_pub_t *dhdp, int ifidx, bool state)
1127 {
1128 struct net_device *net;
1129 dhd_info_t *dhd = dhdp->info;
1130
1131 DHD_TRACE(("%s: Enter\n", __func__));
1132
1133 dhdp->txoff = state;
1134 ASSERT(dhd && dhd->iflist[ifidx]);
1135 net = dhd->iflist[ifidx]->net;
1136 if (state == ON)
1137 netif_stop_queue(net);
1138 else
1139 netif_wake_queue(net);
1140 }
1141
1142 void dhd_rx_frame(dhd_pub_t *dhdp, int ifidx, struct sk_buff *pktbuf,
1143 int numpkt)
1144 {
1145 dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
1146 struct sk_buff *skb;
1147 unsigned char *eth;
1148 uint len;
1149 void *data;
1150 struct sk_buff *pnext, *save_pktbuf;
1151 int i;
1152 dhd_if_t *ifp;
1153 wl_event_msg_t event;
1154
1155 DHD_TRACE(("%s: Enter\n", __func__));
1156
1157 save_pktbuf = pktbuf;
1158
1159 for (i = 0; pktbuf && i < numpkt; i++, pktbuf = pnext) {
1160
1161 pnext = pktbuf->next;
1162 pktbuf->next = NULL;
1163
1164 skb = PKTTONATIVE(dhdp->osh, pktbuf);
1165
1166 /* Get the protocol, maintain skb around eth_type_trans()
1167 * The main reason for this hack is for the limitation of
1168 * Linux 2.4 where 'eth_type_trans' uses the
1169 * 'net->hard_header_len'
1170 * to perform skb_pull inside vs ETH_HLEN. Since to avoid
1171 * coping of the packet coming from the network stack to add
1172 * BDC, Hardware header etc, during network interface
1173 * registration
1174 * we set the 'net->hard_header_len' to ETH_HLEN + extra space
1175 * required
1176 * for BDC, Hardware header etc. and not just the ETH_HLEN
1177 */
1178 eth = skb->data;
1179 len = skb->len;
1180
1181 ifp = dhd->iflist[ifidx];
1182 if (ifp == NULL)
1183 ifp = dhd->iflist[0];
1184
1185 ASSERT(ifp);
1186 skb->dev = ifp->net;
1187 skb->protocol = eth_type_trans(skb, skb->dev);
1188
1189 if (skb->pkt_type == PACKET_MULTICAST)
1190 dhd->pub.rx_multicast++;
1191
1192 skb->data = eth;
1193 skb->len = len;
1194
1195 /* Strip header, count, deliver upward */
1196 skb_pull(skb, ETH_HLEN);
1197
1198 /* Process special event packets and then discard them */
1199 if (ntohs(skb->protocol) == ETH_P_BRCM)
1200 dhd_wl_host_event(dhd, &ifidx,
1201 skb_mac_header(skb),
1202 &event, &data);
1203
1204 ASSERT(ifidx < DHD_MAX_IFS && dhd->iflist[ifidx]);
1205 if (dhd->iflist[ifidx] && !dhd->iflist[ifidx]->state)
1206 ifp = dhd->iflist[ifidx];
1207
1208 if (ifp->net)
1209 ifp->net->last_rx = jiffies;
1210
1211 dhdp->dstats.rx_bytes += skb->len;
1212 dhdp->rx_packets++; /* Local count */
1213
1214 if (in_interrupt()) {
1215 netif_rx(skb);
1216 } else {
1217 /* If the receive is not processed inside an ISR,
1218 * the softirqd must be woken explicitly to service
1219 * the NET_RX_SOFTIRQ. In 2.6 kernels, this is handled
1220 * by netif_rx_ni(), but in earlier kernels, we need
1221 * to do it manually.
1222 */
1223 netif_rx_ni(skb);
1224 }
1225 }
1226 }
1227
1228 void dhd_event(struct dhd_info *dhd, char *evpkt, int evlen, int ifidx)
1229 {
1230 /* Linux version has nothing to do */
1231 return;
1232 }
1233
1234 void dhd_txcomplete(dhd_pub_t *dhdp, struct sk_buff *txp, bool success)
1235 {
1236 uint ifidx;
1237 dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);
1238 struct ethhdr *eh;
1239 u16 type;
1240
1241 dhd_prot_hdrpull(dhdp, &ifidx, txp);
1242
1243 eh = (struct ethhdr *)(txp->data);
1244 type = ntohs(eh->h_proto);
1245
1246 if (type == ETH_P_PAE)
1247 atomic_dec(&dhd->pend_8021x_cnt);
1248
1249 }
1250
1251 static struct net_device_stats *dhd_get_stats(struct net_device *net)
1252 {
1253 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1254 dhd_if_t *ifp;
1255 int ifidx;
1256
1257 DHD_TRACE(("%s: Enter\n", __func__));
1258
1259 ifidx = dhd_net2idx(dhd, net);
1260 if (ifidx == DHD_BAD_IF)
1261 return NULL;
1262
1263 ifp = dhd->iflist[ifidx];
1264 ASSERT(dhd && ifp);
1265
1266 if (dhd->pub.up) {
1267 /* Use the protocol to get dongle stats */
1268 dhd_prot_dstats(&dhd->pub);
1269 }
1270
1271 /* Copy dongle stats to net device stats */
1272 ifp->stats.rx_packets = dhd->pub.dstats.rx_packets;
1273 ifp->stats.tx_packets = dhd->pub.dstats.tx_packets;
1274 ifp->stats.rx_bytes = dhd->pub.dstats.rx_bytes;
1275 ifp->stats.tx_bytes = dhd->pub.dstats.tx_bytes;
1276 ifp->stats.rx_errors = dhd->pub.dstats.rx_errors;
1277 ifp->stats.tx_errors = dhd->pub.dstats.tx_errors;
1278 ifp->stats.rx_dropped = dhd->pub.dstats.rx_dropped;
1279 ifp->stats.tx_dropped = dhd->pub.dstats.tx_dropped;
1280 ifp->stats.multicast = dhd->pub.dstats.multicast;
1281
1282 return &ifp->stats;
1283 }
1284
1285 static int dhd_watchdog_thread(void *data)
1286 {
1287 dhd_info_t *dhd = (dhd_info_t *) data;
1288
1289 /* This thread doesn't need any user-level access,
1290 * so get rid of all our resources
1291 */
1292 #ifdef DHD_SCHED
1293 if (dhd_watchdog_prio > 0) {
1294 struct sched_param param;
1295 param.sched_priority = (dhd_watchdog_prio < MAX_RT_PRIO) ?
1296 dhd_watchdog_prio : (MAX_RT_PRIO - 1);
1297 setScheduler(current, SCHED_FIFO, &param);
1298 }
1299 #endif /* DHD_SCHED */
1300
1301 allow_signal(SIGTERM);
1302 /* Run until signal received */
1303 while (1) {
1304 if (kthread_should_stop())
1305 break;
1306 if (down_interruptible(&dhd->watchdog_sem) == 0) {
1307 if (dhd->pub.dongle_reset == false) {
1308 /* Call the bus module watchdog */
1309 dhd_bus_watchdog(&dhd->pub);
1310 }
1311 /* Count the tick for reference */
1312 dhd->pub.tickcnt++;
1313 } else
1314 break;
1315 }
1316 return 0;
1317 }
1318
1319 static void dhd_watchdog(unsigned long data)
1320 {
1321 dhd_info_t *dhd = (dhd_info_t *) data;
1322
1323 if (dhd->watchdog_tsk) {
1324 up(&dhd->watchdog_sem);
1325
1326 /* Reschedule the watchdog */
1327 if (dhd->wd_timer_valid) {
1328 mod_timer(&dhd->timer,
1329 jiffies + dhd_watchdog_ms * HZ / 1000);
1330 }
1331 return;
1332 }
1333
1334 /* Call the bus module watchdog */
1335 dhd_bus_watchdog(&dhd->pub);
1336
1337 /* Count the tick for reference */
1338 dhd->pub.tickcnt++;
1339
1340 /* Reschedule the watchdog */
1341 if (dhd->wd_timer_valid)
1342 mod_timer(&dhd->timer, jiffies + dhd_watchdog_ms * HZ / 1000);
1343 }
1344
1345 static int dhd_dpc_thread(void *data)
1346 {
1347 dhd_info_t *dhd = (dhd_info_t *) data;
1348
1349 /* This thread doesn't need any user-level access,
1350 * so get rid of all our resources
1351 */
1352 #ifdef DHD_SCHED
1353 if (dhd_dpc_prio > 0) {
1354 struct sched_param param;
1355 param.sched_priority =
1356 (dhd_dpc_prio <
1357 MAX_RT_PRIO) ? dhd_dpc_prio : (MAX_RT_PRIO - 1);
1358 setScheduler(current, SCHED_FIFO, &param);
1359 }
1360 #endif /* DHD_SCHED */
1361
1362 allow_signal(SIGTERM);
1363 /* Run until signal received */
1364 while (1) {
1365 if (kthread_should_stop())
1366 break;
1367 if (down_interruptible(&dhd->dpc_sem) == 0) {
1368 /* Call bus dpc unless it indicated down
1369 (then clean stop) */
1370 if (dhd->pub.busstate != DHD_BUS_DOWN) {
1371 if (dhd_bus_dpc(dhd->pub.bus)) {
1372 up(&dhd->dpc_sem);
1373 }
1374 } else {
1375 dhd_bus_stop(dhd->pub.bus, true);
1376 }
1377 } else
1378 break;
1379 }
1380 return 0;
1381 }
1382
1383 static void dhd_dpc(unsigned long data)
1384 {
1385 dhd_info_t *dhd;
1386
1387 dhd = (dhd_info_t *) data;
1388
1389 /* Call bus dpc unless it indicated down (then clean stop) */
1390 if (dhd->pub.busstate != DHD_BUS_DOWN) {
1391 if (dhd_bus_dpc(dhd->pub.bus))
1392 tasklet_schedule(&dhd->tasklet);
1393 } else {
1394 dhd_bus_stop(dhd->pub.bus, true);
1395 }
1396 }
1397
1398 void dhd_sched_dpc(dhd_pub_t *dhdp)
1399 {
1400 dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
1401
1402 if (dhd->dpc_tsk) {
1403 up(&dhd->dpc_sem);
1404 return;
1405 }
1406
1407 tasklet_schedule(&dhd->tasklet);
1408 }
1409
1410 #ifdef TOE
1411 /* Retrieve current toe component enables, which are kept
1412 as a bitmap in toe_ol iovar */
1413 static int dhd_toe_get(dhd_info_t *dhd, int ifidx, u32 *toe_ol)
1414 {
1415 wl_ioctl_t ioc;
1416 char buf[32];
1417 int ret;
1418
1419 memset(&ioc, 0, sizeof(ioc));
1420
1421 ioc.cmd = WLC_GET_VAR;
1422 ioc.buf = buf;
1423 ioc.len = (uint) sizeof(buf);
1424 ioc.set = false;
1425
1426 strcpy(buf, "toe_ol");
1427 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1428 if (ret < 0) {
1429 /* Check for older dongle image that doesn't support toe_ol */
1430 if (ret == -EIO) {
1431 DHD_ERROR(("%s: toe not supported by device\n",
1432 dhd_ifname(&dhd->pub, ifidx)));
1433 return -EOPNOTSUPP;
1434 }
1435
1436 DHD_INFO(("%s: could not get toe_ol: ret=%d\n",
1437 dhd_ifname(&dhd->pub, ifidx), ret));
1438 return ret;
1439 }
1440
1441 memcpy(toe_ol, buf, sizeof(u32));
1442 return 0;
1443 }
1444
1445 /* Set current toe component enables in toe_ol iovar,
1446 and set toe global enable iovar */
1447 static int dhd_toe_set(dhd_info_t *dhd, int ifidx, u32 toe_ol)
1448 {
1449 wl_ioctl_t ioc;
1450 char buf[32];
1451 int toe, ret;
1452
1453 memset(&ioc, 0, sizeof(ioc));
1454
1455 ioc.cmd = WLC_SET_VAR;
1456 ioc.buf = buf;
1457 ioc.len = (uint) sizeof(buf);
1458 ioc.set = true;
1459
1460 /* Set toe_ol as requested */
1461
1462 strcpy(buf, "toe_ol");
1463 memcpy(&buf[sizeof("toe_ol")], &toe_ol, sizeof(u32));
1464
1465 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1466 if (ret < 0) {
1467 DHD_ERROR(("%s: could not set toe_ol: ret=%d\n",
1468 dhd_ifname(&dhd->pub, ifidx), ret));
1469 return ret;
1470 }
1471
1472 /* Enable toe globally only if any components are enabled. */
1473
1474 toe = (toe_ol != 0);
1475
1476 strcpy(buf, "toe");
1477 memcpy(&buf[sizeof("toe")], &toe, sizeof(u32));
1478
1479 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1480 if (ret < 0) {
1481 DHD_ERROR(("%s: could not set toe: ret=%d\n",
1482 dhd_ifname(&dhd->pub, ifidx), ret));
1483 return ret;
1484 }
1485
1486 return 0;
1487 }
1488 #endif /* TOE */
1489
1490 static void dhd_ethtool_get_drvinfo(struct net_device *net,
1491 struct ethtool_drvinfo *info)
1492 {
1493 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1494
1495 sprintf(info->driver, DRV_MODULE_NAME);
1496 sprintf(info->version, "%lu", dhd->pub.drv_version);
1497 sprintf(info->fw_version, "%s", wl_cfg80211_get_fwname());
1498 sprintf(info->bus_info, "%s", dev_name(&wl_cfg80211_get_sdio_func()->dev));
1499 }
1500
1501 struct ethtool_ops dhd_ethtool_ops = {
1502 .get_drvinfo = dhd_ethtool_get_drvinfo
1503 };
1504
1505 static int dhd_ethtool(dhd_info_t *dhd, void *uaddr)
1506 {
1507 struct ethtool_drvinfo info;
1508 char drvname[sizeof(info.driver)];
1509 u32 cmd;
1510 #ifdef TOE
1511 struct ethtool_value edata;
1512 u32 toe_cmpnt, csum_dir;
1513 int ret;
1514 #endif
1515
1516 DHD_TRACE(("%s: Enter\n", __func__));
1517
1518 /* all ethtool calls start with a cmd word */
1519 if (copy_from_user(&cmd, uaddr, sizeof(u32)))
1520 return -EFAULT;
1521
1522 switch (cmd) {
1523 case ETHTOOL_GDRVINFO:
1524 /* Copy out any request driver name */
1525 if (copy_from_user(&info, uaddr, sizeof(info)))
1526 return -EFAULT;
1527 strncpy(drvname, info.driver, sizeof(info.driver));
1528 drvname[sizeof(info.driver) - 1] = '\0';
1529
1530 /* clear struct for return */
1531 memset(&info, 0, sizeof(info));
1532 info.cmd = cmd;
1533
1534 /* if dhd requested, identify ourselves */
1535 if (strcmp(drvname, "?dhd") == 0) {
1536 sprintf(info.driver, "dhd");
1537 strcpy(info.version, EPI_VERSION_STR);
1538 }
1539
1540 /* otherwise, require dongle to be up */
1541 else if (!dhd->pub.up) {
1542 DHD_ERROR(("%s: dongle is not up\n", __func__));
1543 return -ENODEV;
1544 }
1545
1546 /* finally, report dongle driver type */
1547 else if (dhd->pub.iswl)
1548 sprintf(info.driver, "wl");
1549 else
1550 sprintf(info.driver, "xx");
1551
1552 sprintf(info.version, "%lu", dhd->pub.drv_version);
1553 if (copy_to_user(uaddr, &info, sizeof(info)))
1554 return -EFAULT;
1555 DHD_CTL(("%s: given %*s, returning %s\n", __func__,
1556 (int)sizeof(drvname), drvname, info.driver));
1557 break;
1558
1559 #ifdef TOE
1560 /* Get toe offload components from dongle */
1561 case ETHTOOL_GRXCSUM:
1562 case ETHTOOL_GTXCSUM:
1563 ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
1564 if (ret < 0)
1565 return ret;
1566
1567 csum_dir =
1568 (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
1569
1570 edata.cmd = cmd;
1571 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
1572
1573 if (copy_to_user(uaddr, &edata, sizeof(edata)))
1574 return -EFAULT;
1575 break;
1576
1577 /* Set toe offload components in dongle */
1578 case ETHTOOL_SRXCSUM:
1579 case ETHTOOL_STXCSUM:
1580 if (copy_from_user(&edata, uaddr, sizeof(edata)))
1581 return -EFAULT;
1582
1583 /* Read the current settings, update and write back */
1584 ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
1585 if (ret < 0)
1586 return ret;
1587
1588 csum_dir =
1589 (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
1590
1591 if (edata.data != 0)
1592 toe_cmpnt |= csum_dir;
1593 else
1594 toe_cmpnt &= ~csum_dir;
1595
1596 ret = dhd_toe_set(dhd, 0, toe_cmpnt);
1597 if (ret < 0)
1598 return ret;
1599
1600 /* If setting TX checksum mode, tell Linux the new mode */
1601 if (cmd == ETHTOOL_STXCSUM) {
1602 if (edata.data)
1603 dhd->iflist[0]->net->features |=
1604 NETIF_F_IP_CSUM;
1605 else
1606 dhd->iflist[0]->net->features &=
1607 ~NETIF_F_IP_CSUM;
1608 }
1609
1610 break;
1611 #endif /* TOE */
1612
1613 default:
1614 return -EOPNOTSUPP;
1615 }
1616
1617 return 0;
1618 }
1619
1620 static int dhd_ioctl_entry(struct net_device *net, struct ifreq *ifr, int cmd)
1621 {
1622 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1623 dhd_ioctl_t ioc;
1624 int bcmerror = 0;
1625 int buflen = 0;
1626 void *buf = NULL;
1627 uint driver = 0;
1628 int ifidx;
1629 bool is_set_key_cmd;
1630
1631 ifidx = dhd_net2idx(dhd, net);
1632 DHD_TRACE(("%s: ifidx %d, cmd 0x%04x\n", __func__, ifidx, cmd));
1633
1634 if (ifidx == DHD_BAD_IF)
1635 return -1;
1636
1637 #if defined(CONFIG_WIRELESS_EXT)
1638 /* linux wireless extensions */
1639 if ((cmd >= SIOCIWFIRST) && (cmd <= SIOCIWLAST)) {
1640 /* may recurse, do NOT lock */
1641 return wl_iw_ioctl(net, ifr, cmd);
1642 }
1643 #endif /* defined(CONFIG_WIRELESS_EXT) */
1644
1645 if (cmd == SIOCETHTOOL)
1646 return dhd_ethtool(dhd, (void *)ifr->ifr_data);
1647
1648 if (cmd != SIOCDEVPRIVATE)
1649 return -EOPNOTSUPP;
1650
1651 memset(&ioc, 0, sizeof(ioc));
1652
1653 /* Copy the ioc control structure part of ioctl request */
1654 if (copy_from_user(&ioc, ifr->ifr_data, sizeof(wl_ioctl_t))) {
1655 bcmerror = -EINVAL;
1656 goto done;
1657 }
1658
1659 /* Copy out any buffer passed */
1660 if (ioc.buf) {
1661 buflen = min_t(int, ioc.len, DHD_IOCTL_MAXLEN);
1662 /* optimization for direct ioctl calls from kernel */
1663 /*
1664 if (segment_eq(get_fs(), KERNEL_DS)) {
1665 buf = ioc.buf;
1666 } else {
1667 */
1668 {
1669 buf = kmalloc(buflen, GFP_ATOMIC);
1670 if (!buf) {
1671 bcmerror = -ENOMEM;
1672 goto done;
1673 }
1674 if (copy_from_user(buf, ioc.buf, buflen)) {
1675 bcmerror = -EINVAL;
1676 goto done;
1677 }
1678 }
1679 }
1680
1681 /* To differentiate between wl and dhd read 4 more byes */
1682 if ((copy_from_user(&driver, (char *)ifr->ifr_data + sizeof(wl_ioctl_t),
1683 sizeof(uint)) != 0)) {
1684 bcmerror = -EINVAL;
1685 goto done;
1686 }
1687
1688 if (!capable(CAP_NET_ADMIN)) {
1689 bcmerror = -EPERM;
1690 goto done;
1691 }
1692
1693 /* check for local dhd ioctl and handle it */
1694 if (driver == DHD_IOCTL_MAGIC) {
1695 bcmerror = dhd_ioctl((void *)&dhd->pub, &ioc, buf, buflen);
1696 if (bcmerror)
1697 dhd->pub.bcmerror = bcmerror;
1698 goto done;
1699 }
1700
1701 /* send to dongle (must be up, and wl) */
1702 if ((dhd->pub.busstate != DHD_BUS_DATA)) {
1703 DHD_ERROR(("%s DONGLE_DOWN,__func__\n", __func__));
1704 bcmerror = -EIO;
1705 goto done;
1706 }
1707
1708 if (!dhd->pub.iswl) {
1709 bcmerror = -EIO;
1710 goto done;
1711 }
1712
1713 /* Intercept WLC_SET_KEY IOCTL - serialize M4 send and set key IOCTL to
1714 * prevent M4 encryption.
1715 */
1716 is_set_key_cmd = ((ioc.cmd == WLC_SET_KEY) ||
1717 ((ioc.cmd == WLC_SET_VAR) &&
1718 !(strncmp("wsec_key", ioc.buf, 9))) ||
1719 ((ioc.cmd == WLC_SET_VAR) &&
1720 !(strncmp("bsscfg:wsec_key", ioc.buf, 15))));
1721 if (is_set_key_cmd)
1722 dhd_wait_pend8021x(net);
1723
1724 bcmerror =
1725 dhd_prot_ioctl(&dhd->pub, ifidx, (wl_ioctl_t *)&ioc, buf, buflen);
1726
1727 done:
1728 if (!bcmerror && buf && ioc.buf) {
1729 if (copy_to_user(ioc.buf, buf, buflen))
1730 bcmerror = -EFAULT;
1731 }
1732
1733 kfree(buf);
1734
1735 if (bcmerror > 0)
1736 bcmerror = 0;
1737
1738 return bcmerror;
1739 }
1740
1741 static int dhd_stop(struct net_device *net)
1742 {
1743 #if !defined(IGNORE_ETH0_DOWN)
1744 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1745
1746 DHD_TRACE(("%s: Enter\n", __func__));
1747 if (IS_CFG80211_FAVORITE()) {
1748 wl_cfg80211_down();
1749 }
1750 if (dhd->pub.up == 0)
1751 return 0;
1752
1753 /* Set state and stop OS transmissions */
1754 dhd->pub.up = 0;
1755 netif_stop_queue(net);
1756 #else
1757 DHD_ERROR(("BYPASS %s:due to BRCM compilation : under investigation\n",
1758 __func__));
1759 #endif /* !defined(IGNORE_ETH0_DOWN) */
1760
1761 return 0;
1762 }
1763
1764 static int dhd_open(struct net_device *net)
1765 {
1766 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1767 #ifdef TOE
1768 u32 toe_ol;
1769 #endif
1770 int ifidx = dhd_net2idx(dhd, net);
1771 s32 ret = 0;
1772
1773 DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));
1774
1775 if (ifidx == 0) { /* do it only for primary eth0 */
1776
1777 /* try to bring up bus */
1778 ret = dhd_bus_start(&dhd->pub);
1779 if (ret != 0) {
1780 DHD_ERROR(("%s: failed with code %d\n", __func__, ret));
1781 return -1;
1782 }
1783 atomic_set(&dhd->pend_8021x_cnt, 0);
1784
1785 memcpy(net->dev_addr, dhd->pub.mac, ETH_ALEN);
1786
1787 #ifdef TOE
1788 /* Get current TOE mode from dongle */
1789 if (dhd_toe_get(dhd, ifidx, &toe_ol) >= 0
1790 && (toe_ol & TOE_TX_CSUM_OL) != 0)
1791 dhd->iflist[ifidx]->net->features |= NETIF_F_IP_CSUM;
1792 else
1793 dhd->iflist[ifidx]->net->features &= ~NETIF_F_IP_CSUM;
1794 #endif
1795 }
1796 /* Allow transmit calls */
1797 netif_start_queue(net);
1798 dhd->pub.up = 1;
1799 if (IS_CFG80211_FAVORITE()) {
1800 if (unlikely(wl_cfg80211_up())) {
1801 DHD_ERROR(("%s: failed to bring up cfg80211\n",
1802 __func__));
1803 return -1;
1804 }
1805 }
1806
1807 return ret;
1808 }
1809
1810 int
1811 dhd_add_if(dhd_info_t *dhd, int ifidx, void *handle, char *name,
1812 u8 *mac_addr, u32 flags, u8 bssidx)
1813 {
1814 dhd_if_t *ifp;
1815
1816 DHD_TRACE(("%s: idx %d, handle->%p\n", __func__, ifidx, handle));
1817
1818 ASSERT(dhd && (ifidx < DHD_MAX_IFS));
1819
1820 ifp = dhd->iflist[ifidx];
1821 if (!ifp && !(ifp = kmalloc(sizeof(dhd_if_t), GFP_ATOMIC))) {
1822 DHD_ERROR(("%s: OOM - dhd_if_t\n", __func__));
1823 return -ENOMEM;
1824 }
1825
1826 memset(ifp, 0, sizeof(dhd_if_t));
1827 ifp->info = dhd;
1828 dhd->iflist[ifidx] = ifp;
1829 strlcpy(ifp->name, name, IFNAMSIZ);
1830 if (mac_addr != NULL)
1831 memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN);
1832
1833 if (handle == NULL) {
1834 ifp->state = WLC_E_IF_ADD;
1835 ifp->idx = ifidx;
1836 ASSERT(dhd->sysioc_tsk);
1837 up(&dhd->sysioc_sem);
1838 } else
1839 ifp->net = (struct net_device *)handle;
1840
1841 return 0;
1842 }
1843
1844 void dhd_del_if(dhd_info_t *dhd, int ifidx)
1845 {
1846 dhd_if_t *ifp;
1847
1848 DHD_TRACE(("%s: idx %d\n", __func__, ifidx));
1849
1850 ASSERT(dhd && ifidx && (ifidx < DHD_MAX_IFS));
1851 ifp = dhd->iflist[ifidx];
1852 if (!ifp) {
1853 DHD_ERROR(("%s: Null interface\n", __func__));
1854 return;
1855 }
1856
1857 ifp->state = WLC_E_IF_DEL;
1858 ifp->idx = ifidx;
1859 ASSERT(dhd->sysioc_tsk);
1860 up(&dhd->sysioc_sem);
1861 }
1862
1863 dhd_pub_t *dhd_attach(struct dhd_bus *bus, uint bus_hdrlen)
1864 {
1865 dhd_info_t *dhd = NULL;
1866 struct net_device *net;
1867
1868 DHD_TRACE(("%s: Enter\n", __func__));
1869 /* updates firmware nvram path if it was provided as module
1870 paramters */
1871 if ((firmware_path != NULL) && (firmware_path[0] != '\0'))
1872 strcpy(fw_path, firmware_path);
1873 if ((nvram_path != NULL) && (nvram_path[0] != '\0'))
1874 strcpy(nv_path, nvram_path);
1875
1876 /* Allocate etherdev, including space for private structure */
1877 net = alloc_etherdev(sizeof(dhd));
1878 if (!net) {
1879 DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
1880 goto fail;
1881 }
1882
1883 /* Allocate primary dhd_info */
1884 dhd = kzalloc(sizeof(dhd_info_t), GFP_ATOMIC);
1885 if (!dhd) {
1886 DHD_ERROR(("%s: OOM - alloc dhd_info\n", __func__));
1887 goto fail;
1888 }
1889
1890 /*
1891 * Save the dhd_info into the priv
1892 */
1893 memcpy(netdev_priv(net), &dhd, sizeof(dhd));
1894
1895 /* Set network interface name if it was provided as module parameter */
1896 if (iface_name[0]) {
1897 int len;
1898 char ch;
1899 strncpy(net->name, iface_name, IFNAMSIZ);
1900 net->name[IFNAMSIZ - 1] = 0;
1901 len = strlen(net->name);
1902 ch = net->name[len - 1];
1903 if ((ch > '9' || ch < '0') && (len < IFNAMSIZ - 2))
1904 strcat(net->name, "%d");
1905 }
1906
1907 if (dhd_add_if(dhd, 0, (void *)net, net->name, NULL, 0, 0) ==
1908 DHD_BAD_IF)
1909 goto fail;
1910
1911 net->netdev_ops = NULL;
1912 sema_init(&dhd->proto_sem, 1);
1913 /* Initialize other structure content */
1914 init_waitqueue_head(&dhd->ioctl_resp_wait);
1915 init_waitqueue_head(&dhd->ctrl_wait);
1916
1917 /* Initialize the spinlocks */
1918 spin_lock_init(&dhd->sdlock);
1919 spin_lock_init(&dhd->txqlock);
1920
1921 /* Link to info module */
1922 dhd->pub.info = dhd;
1923
1924 /* Link to bus module */
1925 dhd->pub.bus = bus;
1926 dhd->pub.hdrlen = bus_hdrlen;
1927
1928 /* Attach and link in the protocol */
1929 if (dhd_prot_attach(&dhd->pub) != 0) {
1930 DHD_ERROR(("dhd_prot_attach failed\n"));
1931 goto fail;
1932 }
1933 #if defined(CONFIG_WIRELESS_EXT)
1934 /* Attach and link in the iw */
1935 if (wl_iw_attach(net, (void *)&dhd->pub) != 0) {
1936 DHD_ERROR(("wl_iw_attach failed\n"));
1937 goto fail;
1938 }
1939 #endif /* defined(CONFIG_WIRELESS_EXT) */
1940
1941 /* Attach and link in the cfg80211 */
1942 if (IS_CFG80211_FAVORITE()) {
1943 if (unlikely(wl_cfg80211_attach(net, &dhd->pub))) {
1944 DHD_ERROR(("wl_cfg80211_attach failed\n"));
1945 goto fail;
1946 }
1947 if (!NO_FW_REQ()) {
1948 strcpy(fw_path, wl_cfg80211_get_fwname());
1949 strcpy(nv_path, wl_cfg80211_get_nvramname());
1950 }
1951 }
1952
1953 /* Set up the watchdog timer */
1954 init_timer(&dhd->timer);
1955 dhd->timer.data = (unsigned long) dhd;
1956 dhd->timer.function = dhd_watchdog;
1957
1958 /* Initialize thread based operation and lock */
1959 sema_init(&dhd->sdsem, 1);
1960 if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0))
1961 dhd->threads_only = true;
1962 else
1963 dhd->threads_only = false;
1964
1965 if (dhd_dpc_prio >= 0) {
1966 /* Initialize watchdog thread */
1967 sema_init(&dhd->watchdog_sem, 0);
1968 dhd->watchdog_tsk = kthread_run(dhd_watchdog_thread, dhd,
1969 "dhd_watchdog");
1970 if (IS_ERR(dhd->watchdog_tsk)) {
1971 printk(KERN_WARNING
1972 "dhd_watchdog thread failed to start\n");
1973 dhd->watchdog_tsk = NULL;
1974 }
1975 } else {
1976 dhd->watchdog_tsk = NULL;
1977 }
1978
1979 /* Set up the bottom half handler */
1980 if (dhd_dpc_prio >= 0) {
1981 /* Initialize DPC thread */
1982 sema_init(&dhd->dpc_sem, 0);
1983 dhd->dpc_tsk = kthread_run(dhd_dpc_thread, dhd, "dhd_dpc");
1984 if (IS_ERR(dhd->dpc_tsk)) {
1985 printk(KERN_WARNING
1986 "dhd_dpc thread failed to start\n");
1987 dhd->dpc_tsk = NULL;
1988 }
1989 } else {
1990 tasklet_init(&dhd->tasklet, dhd_dpc, (unsigned long) dhd);
1991 dhd->dpc_tsk = NULL;
1992 }
1993
1994 if (dhd_sysioc) {
1995 sema_init(&dhd->sysioc_sem, 0);
1996 dhd->sysioc_tsk = kthread_run(_dhd_sysioc_thread, dhd,
1997 "_dhd_sysioc");
1998 if (IS_ERR(dhd->sysioc_tsk)) {
1999 printk(KERN_WARNING
2000 "_dhd_sysioc thread failed to start\n");
2001 dhd->sysioc_tsk = NULL;
2002 }
2003 } else
2004 dhd->sysioc_tsk = NULL;
2005
2006 /*
2007 * Save the dhd_info into the priv
2008 */
2009 memcpy(netdev_priv(net), &dhd, sizeof(dhd));
2010
2011 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2012 g_bus = bus;
2013 #endif
2014 #if defined(CONFIG_PM_SLEEP)
2015 atomic_set(&dhd_mmc_suspend, false);
2016 if (!IS_CFG80211_FAVORITE())
2017 register_pm_notifier(&dhd_sleep_pm_notifier);
2018 #endif /* defined(CONFIG_PM_SLEEP) */
2019 /* && defined(DHD_GPL) */
2020 /* Init lock suspend to prevent kernel going to suspend */
2021 #ifdef CONFIG_HAS_EARLYSUSPEND
2022 dhd->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 20;
2023 dhd->early_suspend.suspend = dhd_early_suspend;
2024 dhd->early_suspend.resume = dhd_late_resume;
2025 register_early_suspend(&dhd->early_suspend);
2026 #endif
2027
2028 return &dhd->pub;
2029
2030 fail:
2031 if (net)
2032 free_netdev(net);
2033 if (dhd)
2034 dhd_detach(&dhd->pub);
2035
2036 return NULL;
2037 }
2038
2039 int dhd_bus_start(dhd_pub_t *dhdp)
2040 {
2041 int ret = -1;
2042 dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
2043 #ifdef EMBEDDED_PLATFORM
2044 char iovbuf[WL_EVENTING_MASK_LEN + 12]; /* Room for "event_msgs" +
2045 '\0' + bitvec */
2046 #endif /* EMBEDDED_PLATFORM */
2047
2048 ASSERT(dhd);
2049
2050 DHD_TRACE(("%s:\n", __func__));
2051
2052 /* try to download image and nvram to the dongle */
2053 if (dhd->pub.busstate == DHD_BUS_DOWN) {
2054 if (!(dhd_bus_download_firmware(dhd->pub.bus,
2055 fw_path, nv_path))) {
2056 DHD_ERROR(("%s: dhdsdio_probe_download failed. "
2057 "firmware = %s nvram = %s\n",
2058 __func__, fw_path, nv_path));
2059 return -1;
2060 }
2061 }
2062
2063 /* Start the watchdog timer */
2064 dhd->pub.tickcnt = 0;
2065 dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
2066
2067 /* Bring up the bus */
2068 ret = dhd_bus_init(&dhd->pub, true);
2069 if (ret != 0) {
2070 DHD_ERROR(("%s, dhd_bus_init failed %d\n", __func__, ret));
2071 return ret;
2072 }
2073 #if defined(OOB_INTR_ONLY)
2074 /* Host registration for OOB interrupt */
2075 if (bcmsdh_register_oob_intr(dhdp)) {
2076 del_timer_sync(&dhd->timer);
2077 dhd->wd_timer_valid = false;
2078 DHD_ERROR(("%s Host failed to resgister for OOB\n", __func__));
2079 return -ENODEV;
2080 }
2081
2082 /* Enable oob at firmware */
2083 dhd_enable_oob_intr(dhd->pub.bus, true);
2084 #endif /* defined(OOB_INTR_ONLY) */
2085
2086 /* If bus is not ready, can't come up */
2087 if (dhd->pub.busstate != DHD_BUS_DATA) {
2088 del_timer_sync(&dhd->timer);
2089 dhd->wd_timer_valid = false;
2090 DHD_ERROR(("%s failed bus is not ready\n", __func__));
2091 return -ENODEV;
2092 }
2093 #ifdef EMBEDDED_PLATFORM
2094 brcmu_mkiovar("event_msgs", dhdp->eventmask, WL_EVENTING_MASK_LEN,
2095 iovbuf, sizeof(iovbuf));
2096 dhdcdc_query_ioctl(dhdp, 0, WLC_GET_VAR, iovbuf, sizeof(iovbuf));
2097 memcpy(dhdp->eventmask, iovbuf, WL_EVENTING_MASK_LEN);
2098
2099 setbit(dhdp->eventmask, WLC_E_SET_SSID);
2100 setbit(dhdp->eventmask, WLC_E_PRUNE);
2101 setbit(dhdp->eventmask, WLC_E_AUTH);
2102 setbit(dhdp->eventmask, WLC_E_REASSOC);
2103 setbit(dhdp->eventmask, WLC_E_REASSOC_IND);
2104 setbit(dhdp->eventmask, WLC_E_DEAUTH_IND);
2105 setbit(dhdp->eventmask, WLC_E_DISASSOC_IND);
2106 setbit(dhdp->eventmask, WLC_E_DISASSOC);
2107 setbit(dhdp->eventmask, WLC_E_JOIN);
2108 setbit(dhdp->eventmask, WLC_E_ASSOC_IND);
2109 setbit(dhdp->eventmask, WLC_E_PSK_SUP);
2110 setbit(dhdp->eventmask, WLC_E_LINK);
2111 setbit(dhdp->eventmask, WLC_E_NDIS_LINK);
2112 setbit(dhdp->eventmask, WLC_E_MIC_ERROR);
2113 setbit(dhdp->eventmask, WLC_E_PMKID_CACHE);
2114 setbit(dhdp->eventmask, WLC_E_TXFAIL);
2115 setbit(dhdp->eventmask, WLC_E_JOIN_START);
2116 setbit(dhdp->eventmask, WLC_E_SCAN_COMPLETE);
2117 #ifdef PNO_SUPPORT
2118 setbit(dhdp->eventmask, WLC_E_PFN_NET_FOUND);
2119 #endif /* PNO_SUPPORT */
2120
2121 /* enable dongle roaming event */
2122
2123 dhdp->pktfilter_count = 1;
2124 /* Setup filter to allow only unicast */
2125 dhdp->pktfilter[0] = "100 0 0 0 0x01 0x00";
2126 #endif /* EMBEDDED_PLATFORM */
2127
2128 /* Bus is ready, do any protocol initialization */
2129 ret = dhd_prot_init(&dhd->pub);
2130 if (ret < 0)
2131 return ret;
2132
2133 return 0;
2134 }
2135
2136 int
2137 dhd_iovar(dhd_pub_t *pub, int ifidx, char *name, char *cmd_buf, uint cmd_len,
2138 int set)
2139 {
2140 char buf[strlen(name) + 1 + cmd_len];
2141 int len = sizeof(buf);
2142 wl_ioctl_t ioc;
2143 int ret;
2144
2145 len = brcmu_mkiovar(name, cmd_buf, cmd_len, buf, len);
2146
2147 memset(&ioc, 0, sizeof(ioc));
2148
2149 ioc.cmd = set ? WLC_SET_VAR : WLC_GET_VAR;
2150 ioc.buf = buf;
2151 ioc.len = len;
2152 ioc.set = set;
2153
2154 ret = dhd_prot_ioctl(pub, ifidx, &ioc, ioc.buf, ioc.len);
2155 if (!set && ret >= 0)
2156 memcpy(cmd_buf, buf, cmd_len);
2157
2158 return ret;
2159 }
2160
2161 static struct net_device_ops dhd_ops_pri = {
2162 .ndo_open = dhd_open,
2163 .ndo_stop = dhd_stop,
2164 .ndo_get_stats = dhd_get_stats,
2165 .ndo_do_ioctl = dhd_ioctl_entry,
2166 .ndo_start_xmit = dhd_start_xmit,
2167 .ndo_set_mac_address = dhd_set_mac_address,
2168 .ndo_set_multicast_list = dhd_set_multicast_list
2169 };
2170
2171 int dhd_net_attach(dhd_pub_t *dhdp, int ifidx)
2172 {
2173 dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
2174 struct net_device *net;
2175 u8 temp_addr[ETH_ALEN] = {
2176 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33};
2177
2178 DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));
2179
2180 ASSERT(dhd && dhd->iflist[ifidx]);
2181
2182 net = dhd->iflist[ifidx]->net;
2183 ASSERT(net);
2184
2185 ASSERT(!net->netdev_ops);
2186 net->netdev_ops = &dhd_ops_pri;
2187
2188 /*
2189 * We have to use the primary MAC for virtual interfaces
2190 */
2191 if (ifidx != 0) {
2192 /* for virtual interfaces use the primary MAC */
2193 memcpy(temp_addr, dhd->pub.mac, ETH_ALEN);
2194
2195 }
2196
2197 if (ifidx == 1) {
2198 DHD_TRACE(("%s ACCESS POINT MAC: \n", __func__));
2199 /* ACCESSPOINT INTERFACE CASE */
2200 temp_addr[0] |= 0X02; /* set bit 2 ,
2201 - Locally Administered address */
2202
2203 }
2204 net->hard_header_len = ETH_HLEN + dhd->pub.hdrlen;
2205 net->ethtool_ops = &dhd_ethtool_ops;
2206
2207 dhd->pub.rxsz = net->mtu + net->hard_header_len + dhd->pub.hdrlen;
2208
2209 memcpy(net->dev_addr, temp_addr, ETH_ALEN);
2210
2211 if (register_netdev(net) != 0) {
2212 DHD_ERROR(("%s: couldn't register the net device\n",
2213 __func__));
2214 goto fail;
2215 }
2216
2217 DHD_INFO(("%s: Broadcom Dongle Host Driver\n", net->name));
2218
2219 return 0;
2220
2221 fail:
2222 net->netdev_ops = NULL;
2223 return -EBADE;
2224 }
2225
2226 void dhd_bus_detach(dhd_pub_t *dhdp)
2227 {
2228 dhd_info_t *dhd;
2229
2230 DHD_TRACE(("%s: Enter\n", __func__));
2231
2232 if (dhdp) {
2233 dhd = (dhd_info_t *) dhdp->info;
2234 if (dhd) {
2235 /* Stop the protocol module */
2236 dhd_prot_stop(&dhd->pub);
2237
2238 /* Stop the bus module */
2239 dhd_bus_stop(dhd->pub.bus, true);
2240 #if defined(OOB_INTR_ONLY)
2241 bcmsdh_unregister_oob_intr();
2242 #endif /* defined(OOB_INTR_ONLY) */
2243
2244 /* Clear the watchdog timer */
2245 del_timer_sync(&dhd->timer);
2246 dhd->wd_timer_valid = false;
2247 }
2248 }
2249 }
2250
2251 void dhd_detach(dhd_pub_t *dhdp)
2252 {
2253 dhd_info_t *dhd;
2254
2255 DHD_TRACE(("%s: Enter\n", __func__));
2256
2257 if (dhdp) {
2258 dhd = (dhd_info_t *) dhdp->info;
2259 if (dhd) {
2260 dhd_if_t *ifp;
2261 int i;
2262
2263 #if defined(CONFIG_HAS_EARLYSUSPEND)
2264 if (dhd->early_suspend.suspend)
2265 unregister_early_suspend(&dhd->early_suspend);
2266 #endif /* defined(CONFIG_HAS_EARLYSUSPEND) */
2267
2268 for (i = 1; i < DHD_MAX_IFS; i++)
2269 if (dhd->iflist[i])
2270 dhd_del_if(dhd, i);
2271
2272 ifp = dhd->iflist[0];
2273 ASSERT(ifp);
2274 if (ifp->net->netdev_ops == &dhd_ops_pri) {
2275 dhd_stop(ifp->net);
2276 unregister_netdev(ifp->net);
2277 }
2278
2279 if (dhd->watchdog_tsk) {
2280 send_sig(SIGTERM, dhd->watchdog_tsk, 1);
2281 kthread_stop(dhd->watchdog_tsk);
2282 dhd->watchdog_tsk = NULL;
2283 }
2284
2285 if (dhd->dpc_tsk) {
2286 send_sig(SIGTERM, dhd->dpc_tsk, 1);
2287 kthread_stop(dhd->dpc_tsk);
2288 dhd->dpc_tsk = NULL;
2289 } else
2290 tasklet_kill(&dhd->tasklet);
2291
2292 if (dhd->sysioc_tsk) {
2293 send_sig(SIGTERM, dhd->sysioc_tsk, 1);
2294 kthread_stop(dhd->sysioc_tsk);
2295 dhd->sysioc_tsk = NULL;
2296 }
2297
2298 dhd_bus_detach(dhdp);
2299
2300 if (dhdp->prot)
2301 dhd_prot_detach(dhdp);
2302
2303 #if defined(CONFIG_WIRELESS_EXT)
2304 wl_iw_detach();
2305 #endif /* (CONFIG_WIRELESS_EXT) */
2306
2307 if (IS_CFG80211_FAVORITE())
2308 wl_cfg80211_detach();
2309
2310 #if defined(CONFIG_PM_SLEEP)
2311 if (!IS_CFG80211_FAVORITE())
2312 unregister_pm_notifier(&dhd_sleep_pm_notifier);
2313 #endif /* defined(CONFIG_PM_SLEEP) */
2314 /* && defined(DHD_GPL) */
2315 free_netdev(ifp->net);
2316 kfree(ifp);
2317 kfree(dhd);
2318 }
2319 }
2320 }
2321
2322 static void __exit dhd_module_cleanup(void)
2323 {
2324 DHD_TRACE(("%s: Enter\n", __func__));
2325
2326 dhd_bus_unregister();
2327 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2328 wifi_del_dev();
2329 #endif
2330 /* Call customer gpio to turn off power with WL_REG_ON signal */
2331 dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
2332 }
2333
2334 static int __init dhd_module_init(void)
2335 {
2336 int error;
2337
2338 DHD_TRACE(("%s: Enter\n", __func__));
2339
2340 /* Sanity check on the module parameters */
2341 do {
2342 /* Both watchdog and DPC as tasklets are ok */
2343 if ((dhd_watchdog_prio < 0) && (dhd_dpc_prio < 0))
2344 break;
2345
2346 /* If both watchdog and DPC are threads, TX must be deferred */
2347 if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0)
2348 && dhd_deferred_tx)
2349 break;
2350
2351 DHD_ERROR(("Invalid module parameters.\n"));
2352 return -EINVAL;
2353 } while (0);
2354 /* Call customer gpio to turn on power with WL_REG_ON signal */
2355 dhd_customer_gpio_wlan_ctrl(WLAN_POWER_ON);
2356
2357 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2358 sema_init(&wifi_control_sem, 0);
2359
2360 error = wifi_add_dev();
2361 if (error) {
2362 DHD_ERROR(("%s: platform_driver_register failed\n", __func__));
2363 goto failed;
2364 }
2365
2366 /* Waiting callback after platform_driver_register is done or
2367 exit with error */
2368 if (down_timeout(&wifi_control_sem, msecs_to_jiffies(1000)) != 0) {
2369 printk(KERN_ERR "%s: platform_driver_register timeout\n",
2370 __func__);
2371 /* remove device */
2372 wifi_del_dev();
2373 goto failed;
2374 }
2375 #endif /* #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC) */
2376
2377 error = dhd_bus_register();
2378
2379 if (error) {
2380 DHD_ERROR(("%s: sdio_register_driver failed\n", __func__));
2381 goto failed;
2382 }
2383 return error;
2384
2385 failed:
2386 /* turn off power and exit */
2387 dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
2388 return -EINVAL;
2389 }
2390
2391 module_init(dhd_module_init);
2392 module_exit(dhd_module_cleanup);
2393
2394 /*
2395 * OS specific functions required to implement DHD driver in OS independent way
2396 */
2397 int dhd_os_proto_block(dhd_pub_t *pub)
2398 {
2399 dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2400
2401 if (dhd) {
2402 down(&dhd->proto_sem);
2403 return 1;
2404 }
2405 return 0;
2406 }
2407
2408 int dhd_os_proto_unblock(dhd_pub_t *pub)
2409 {
2410 dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2411
2412 if (dhd) {
2413 up(&dhd->proto_sem);
2414 return 1;
2415 }
2416
2417 return 0;
2418 }
2419
2420 unsigned int dhd_os_get_ioctl_resp_timeout(void)
2421 {
2422 return (unsigned int)dhd_ioctl_timeout_msec;
2423 }
2424
2425 void dhd_os_set_ioctl_resp_timeout(unsigned int timeout_msec)
2426 {
2427 dhd_ioctl_timeout_msec = (int)timeout_msec;
2428 }
2429
2430 int dhd_os_ioctl_resp_wait(dhd_pub_t *pub, uint *condition, bool *pending)
2431 {
2432 dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2433 DECLARE_WAITQUEUE(wait, current);
2434 int timeout = dhd_ioctl_timeout_msec;
2435
2436 /* Convert timeout in millsecond to jiffies */
2437 timeout = timeout * HZ / 1000;
2438
2439 /* Wait until control frame is available */
2440 add_wait_queue(&dhd->ioctl_resp_wait, &wait);
2441 set_current_state(TASK_INTERRUPTIBLE);
2442
2443 while (!(*condition) && (!signal_pending(current) && timeout))
2444 timeout = schedule_timeout(timeout);
2445
2446 if (signal_pending(current))
2447 *pending = true;
2448
2449 set_current_state(TASK_RUNNING);
2450 remove_wait_queue(&dhd->ioctl_resp_wait, &wait);
2451
2452 return timeout;
2453 }
2454
2455 int dhd_os_ioctl_resp_wake(dhd_pub_t *pub)
2456 {
2457 dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2458
2459 if (waitqueue_active(&dhd->ioctl_resp_wait))
2460 wake_up_interruptible(&dhd->ioctl_resp_wait);
2461
2462 return 0;
2463 }
2464
2465 void dhd_os_wd_timer(void *bus, uint wdtick)
2466 {
2467 dhd_pub_t *pub = bus;
2468 static uint save_dhd_watchdog_ms;
2469 dhd_info_t *dhd = (dhd_info_t *) pub->info;
2470
2471 /* don't start the wd until fw is loaded */
2472 if (pub->busstate == DHD_BUS_DOWN)
2473 return;
2474
2475 /* Totally stop the timer */
2476 if (!wdtick && dhd->wd_timer_valid == true) {
2477 del_timer_sync(&dhd->timer);
2478 dhd->wd_timer_valid = false;
2479 save_dhd_watchdog_ms = wdtick;
2480 return;
2481 }
2482
2483 if (wdtick) {
2484 dhd_watchdog_ms = (uint) wdtick;
2485
2486 if (save_dhd_watchdog_ms != dhd_watchdog_ms) {
2487
2488 if (dhd->wd_timer_valid == true)
2489 /* Stop timer and restart at new value */
2490 del_timer_sync(&dhd->timer);
2491
2492 /* Create timer again when watchdog period is
2493 dynamically changed or in the first instance
2494 */
2495 dhd->timer.expires =
2496 jiffies + dhd_watchdog_ms * HZ / 1000;
2497 add_timer(&dhd->timer);
2498
2499 } else {
2500 /* Re arm the timer, at last watchdog period */
2501 mod_timer(&dhd->timer,
2502 jiffies + dhd_watchdog_ms * HZ / 1000);
2503 }
2504
2505 dhd->wd_timer_valid = true;
2506 save_dhd_watchdog_ms = wdtick;
2507 }
2508 }
2509
2510 void *dhd_os_open_image(char *filename)
2511 {
2512 struct file *fp;
2513
2514 if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2515 return wl_cfg80211_request_fw(filename);
2516
2517 fp = filp_open(filename, O_RDONLY, 0);
2518 /*
2519 * 2.6.11 (FC4) supports filp_open() but later revs don't?
2520 * Alternative:
2521 * fp = open_namei(AT_FDCWD, filename, O_RD, 0);
2522 * ???
2523 */
2524 if (IS_ERR(fp))
2525 fp = NULL;
2526
2527 return fp;
2528 }
2529
2530 int dhd_os_get_image_block(char *buf, int len, void *image)
2531 {
2532 struct file *fp = (struct file *)image;
2533 int rdlen;
2534
2535 if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2536 return wl_cfg80211_read_fw(buf, len);
2537
2538 if (!image)
2539 return 0;
2540
2541 rdlen = kernel_read(fp, fp->f_pos, buf, len);
2542 if (rdlen > 0)
2543 fp->f_pos += rdlen;
2544
2545 return rdlen;
2546 }
2547
2548 void dhd_os_close_image(void *image)
2549 {
2550 if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2551 return wl_cfg80211_release_fw();
2552 if (image)
2553 filp_close((struct file *)image, NULL);
2554 }
2555
2556 void dhd_os_sdlock(dhd_pub_t *pub)
2557 {
2558 dhd_info_t *dhd;
2559
2560 dhd = (dhd_info_t *) (pub->info);
2561
2562 if (dhd->threads_only)
2563 down(&dhd->sdsem);
2564 else
2565 spin_lock_bh(&dhd->sdlock);
2566 }
2567
2568 void dhd_os_sdunlock(dhd_pub_t *pub)
2569 {
2570 dhd_info_t *dhd;
2571
2572 dhd = (dhd_info_t *) (pub->info);
2573
2574 if (dhd->threads_only)
2575 up(&dhd->sdsem);
2576 else
2577 spin_unlock_bh(&dhd->sdlock);
2578 }
2579
2580 void dhd_os_sdlock_txq(dhd_pub_t *pub)
2581 {
2582 dhd_info_t *dhd;
2583
2584 dhd = (dhd_info_t *) (pub->info);
2585 spin_lock_bh(&dhd->txqlock);
2586 }
2587
2588 void dhd_os_sdunlock_txq(dhd_pub_t *pub)
2589 {
2590 dhd_info_t *dhd;
2591
2592 dhd = (dhd_info_t *) (pub->info);
2593 spin_unlock_bh(&dhd->txqlock);
2594 }
2595
2596 void dhd_os_sdlock_rxq(dhd_pub_t *pub)
2597 {
2598 }
2599
2600 void dhd_os_sdunlock_rxq(dhd_pub_t *pub)
2601 {
2602 }
2603
2604 void dhd_os_sdtxlock(dhd_pub_t *pub)
2605 {
2606 dhd_os_sdlock(pub);
2607 }
2608
2609 void dhd_os_sdtxunlock(dhd_pub_t *pub)
2610 {
2611 dhd_os_sdunlock(pub);
2612 }
2613
2614 static int
2615 dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
2616 wl_event_msg_t *event, void **data)
2617 {
2618 int bcmerror = 0;
2619
2620 ASSERT(dhd != NULL);
2621
2622 bcmerror = wl_host_event(dhd, ifidx, pktdata, event, data);
2623 if (bcmerror != 0)
2624 return bcmerror;
2625
2626 #if defined(CONFIG_WIRELESS_EXT)
2627 if (!IS_CFG80211_FAVORITE()) {
2628 if ((dhd->iflist[*ifidx] == NULL)
2629 || (dhd->iflist[*ifidx]->net == NULL)) {
2630 DHD_ERROR(("%s Exit null pointer\n", __func__));
2631 return bcmerror;
2632 }
2633
2634 if (dhd->iflist[*ifidx]->net)
2635 wl_iw_event(dhd->iflist[*ifidx]->net, event, *data);
2636 }
2637 #endif /* defined(CONFIG_WIRELESS_EXT) */
2638
2639 if (IS_CFG80211_FAVORITE()) {
2640 ASSERT(dhd->iflist[*ifidx] != NULL);
2641 ASSERT(dhd->iflist[*ifidx]->net != NULL);
2642 if (dhd->iflist[*ifidx]->net)
2643 wl_cfg80211_event(dhd->iflist[*ifidx]->net, event,
2644 *data);
2645 }
2646
2647 return bcmerror;
2648 }
2649
2650 /* send up locally generated event */
2651 void dhd_sendup_event(dhd_pub_t *dhdp, wl_event_msg_t *event, void *data)
2652 {
2653 switch (be32_to_cpu(event->event_type)) {
2654 default:
2655 break;
2656 }
2657 }
2658
2659 void dhd_wait_for_event(dhd_pub_t *dhd, bool *lockvar)
2660 {
2661 struct dhd_info *dhdinfo = dhd->info;
2662 dhd_os_sdunlock(dhd);
2663 wait_event_interruptible_timeout(dhdinfo->ctrl_wait,
2664 (*lockvar == false), HZ * 2);
2665 dhd_os_sdlock(dhd);
2666 return;
2667 }
2668
2669 void dhd_wait_event_wakeup(dhd_pub_t *dhd)
2670 {
2671 struct dhd_info *dhdinfo = dhd->info;
2672 if (waitqueue_active(&dhdinfo->ctrl_wait))
2673 wake_up_interruptible(&dhdinfo->ctrl_wait);
2674 return;
2675 }
2676
2677 int dhd_dev_reset(struct net_device *dev, u8 flag)
2678 {
2679 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2680
2681 /* Turning off watchdog */
2682 if (flag)
2683 dhd_os_wd_timer(&dhd->pub, 0);
2684
2685 dhd_bus_devreset(&dhd->pub, flag);
2686
2687 /* Turning on watchdog back */
2688 if (!flag)
2689 dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
2690 DHD_ERROR(("%s: WLAN OFF DONE\n", __func__));
2691
2692 return 1;
2693 }
2694
2695 int net_os_set_suspend_disable(struct net_device *dev, int val)
2696 {
2697 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2698 int ret = 0;
2699
2700 if (dhd) {
2701 ret = dhd->pub.suspend_disable_flag;
2702 dhd->pub.suspend_disable_flag = val;
2703 }
2704 return ret;
2705 }
2706
2707 int net_os_set_suspend(struct net_device *dev, int val)
2708 {
2709 int ret = 0;
2710 #if defined(CONFIG_HAS_EARLYSUSPEND)
2711 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2712
2713 if (dhd) {
2714 dhd_os_proto_block(&dhd->pub);
2715 ret = dhd_set_suspend(val, &dhd->pub);
2716 dhd_os_proto_unblock(&dhd->pub);
2717 }
2718 #endif /* defined(CONFIG_HAS_EARLYSUSPEND) */
2719 return ret;
2720 }
2721
2722 int net_os_set_dtim_skip(struct net_device *dev, int val)
2723 {
2724 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2725
2726 if (dhd)
2727 dhd->pub.dtim_skip = val;
2728
2729 return 0;
2730 }
2731
2732 int net_os_set_packet_filter(struct net_device *dev, int val)
2733 {
2734 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2735 int ret = 0;
2736
2737 /* Packet filtering is set only if we still in early-suspend and
2738 * we need either to turn it ON or turn it OFF
2739 * We can always turn it OFF in case of early-suspend, but we turn it
2740 * back ON only if suspend_disable_flag was not set
2741 */
2742 if (dhd && dhd->pub.up) {
2743 dhd_os_proto_block(&dhd->pub);
2744 if (dhd->pub.in_suspend) {
2745 if (!val || (val && !dhd->pub.suspend_disable_flag))
2746 dhd_set_packet_filter(val, &dhd->pub);
2747 }
2748 dhd_os_proto_unblock(&dhd->pub);
2749 }
2750 return ret;
2751 }
2752
2753 void dhd_dev_init_ioctl(struct net_device *dev)
2754 {
2755 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2756
2757 dhd_preinit_ioctls(&dhd->pub);
2758 }
2759
2760 #ifdef PNO_SUPPORT
2761 /* Linux wrapper to call common dhd_pno_clean */
2762 int dhd_dev_pno_reset(struct net_device *dev)
2763 {
2764 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2765
2766 return dhd_pno_clean(&dhd->pub);
2767 }
2768
2769 /* Linux wrapper to call common dhd_pno_enable */
2770 int dhd_dev_pno_enable(struct net_device *dev, int pfn_enabled)
2771 {
2772 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2773
2774 return dhd_pno_enable(&dhd->pub, pfn_enabled);
2775 }
2776
2777 /* Linux wrapper to call common dhd_pno_set */
2778 int
2779 dhd_dev_pno_set(struct net_device *dev, wlc_ssid_t *ssids_local, int nssid,
2780 unsigned char scan_fr)
2781 {
2782 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2783
2784 return dhd_pno_set(&dhd->pub, ssids_local, nssid, scan_fr);
2785 }
2786
2787 /* Linux wrapper to get pno status */
2788 int dhd_dev_get_pno_status(struct net_device *dev)
2789 {
2790 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2791
2792 return dhd_pno_get_status(&dhd->pub);
2793 }
2794
2795 #endif /* PNO_SUPPORT */
2796
2797 static int dhd_get_pend_8021x_cnt(dhd_info_t *dhd)
2798 {
2799 return atomic_read(&dhd->pend_8021x_cnt);
2800 }
2801
2802 #define MAX_WAIT_FOR_8021X_TX 10
2803
2804 int dhd_wait_pend8021x(struct net_device *dev)
2805 {
2806 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2807 int timeout = 10 * HZ / 1000;
2808 int ntimes = MAX_WAIT_FOR_8021X_TX;
2809 int pend = dhd_get_pend_8021x_cnt(dhd);
2810
2811 while (ntimes && pend) {
2812 if (pend) {
2813 set_current_state(TASK_INTERRUPTIBLE);
2814 schedule_timeout(timeout);
2815 set_current_state(TASK_RUNNING);
2816 ntimes--;
2817 }
2818 pend = dhd_get_pend_8021x_cnt(dhd);
2819 }
2820 return pend;
2821 }
2822
2823 void wl_os_wd_timer(struct net_device *ndev, uint wdtick)
2824 {
2825 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(ndev);
2826
2827 dhd_os_wd_timer(&dhd->pub, wdtick);
2828 }
2829
2830 #ifdef DHD_DEBUG
2831 int write_to_file(dhd_pub_t *dhd, u8 *buf, int size)
2832 {
2833 int ret = 0;
2834 struct file *fp;
2835 mm_segment_t old_fs;
2836 loff_t pos = 0;
2837
2838 /* change to KERNEL_DS address limit */
2839 old_fs = get_fs();
2840 set_fs(KERNEL_DS);
2841
2842 /* open file to write */
2843 fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
2844 if (!fp) {
2845 DHD_ERROR(("%s: open file error\n", __func__));
2846 ret = -1;
2847 goto exit;
2848 }
2849
2850 /* Write buf to file */
2851 fp->f_op->write(fp, buf, size, &pos);
2852
2853 exit:
2854 /* free buf before return */
2855 kfree(buf);
2856 /* close file before return */
2857 if (fp)
2858 filp_close(fp, current->files);
2859 /* restore previous address limit */
2860 set_fs(old_fs);
2861
2862 return ret;
2863 }
2864 #endif /* DHD_DEBUG */
Linux kernel - Deliverables
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