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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 <bcmutils.h>
36
37 #include <dngl_stats.h>
38 #include <dhd.h>
39 #include <dhd_bus.h>
40 #include <dhd_proto.h>
41 #include <dhd_dbg.h>
42
43 #include <wl_cfg80211.h>
44
45 #define EPI_VERSION_STR "4.218.248.5"
46 #define ETH_P_BRCM 0x886c
47
48 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
49 #include <linux/wifi_tiwlan.h>
50
51 struct semaphore wifi_control_sem;
52
53 struct dhd_bus *g_bus;
54
55 static struct wifi_platform_data *wifi_control_data;
56 static struct resource *wifi_irqres;
57
58 int wifi_get_irq_number(unsigned long *irq_flags_ptr)
59 {
60 if (wifi_irqres) {
61 *irq_flags_ptr = wifi_irqres->flags & IRQF_TRIGGER_MASK;
62 return (int)wifi_irqres->start;
63 }
64 #ifdef CUSTOM_OOB_GPIO_NUM
65 return CUSTOM_OOB_GPIO_NUM;
66 #else
67 return -1;
68 #endif
69 }
70
71 int wifi_set_carddetect(int on)
72 {
73 printk(KERN_ERR "%s = %d\n", __func__, on);
74 if (wifi_control_data && wifi_control_data->set_carddetect)
75 wifi_control_data->set_carddetect(on);
76 return 0;
77 }
78
79 int wifi_set_power(int on, unsigned long msec)
80 {
81 printk(KERN_ERR "%s = %d\n", __func__, on);
82 if (wifi_control_data && wifi_control_data->set_power)
83 wifi_control_data->set_power(on);
84 if (msec)
85 mdelay(msec);
86 return 0;
87 }
88
89 int wifi_set_reset(int on, unsigned long msec)
90 {
91 printk(KERN_ERR "%s = %d\n", __func__, on);
92 if (wifi_control_data && wifi_control_data->set_reset)
93 wifi_control_data->set_reset(on);
94 if (msec)
95 mdelay(msec);
96 return 0;
97 }
98
99 static int wifi_probe(struct platform_device *pdev)
100 {
101 struct wifi_platform_data *wifi_ctrl =
102 (struct wifi_platform_data *)(pdev->dev.platform_data);
103
104 printk(KERN_ERR "## %s\n", __func__);
105 wifi_irqres =
106 platform_get_resource_byname(pdev, IORESOURCE_IRQ,
107 "bcm4329_wlan_irq");
108 wifi_control_data = wifi_ctrl;
109
110 wifi_set_power(1, 0); /* Power On */
111 wifi_set_carddetect(1); /* CardDetect (0->1) */
112
113 up(&wifi_control_sem);
114 return 0;
115 }
116
117 static int wifi_remove(struct platform_device *pdev)
118 {
119 struct wifi_platform_data *wifi_ctrl =
120 (struct wifi_platform_data *)(pdev->dev.platform_data);
121
122 printk(KERN_ERR "## %s\n", __func__);
123 wifi_control_data = wifi_ctrl;
124
125 wifi_set_carddetect(0); /* CardDetect (1->0) */
126 wifi_set_power(0, 0); /* Power Off */
127
128 up(&wifi_control_sem);
129 return 0;
130 }
131
132 static int wifi_suspend(struct platform_device *pdev, pm_message_t state)
133 {
134 DHD_TRACE(("##> %s\n", __func__));
135 return 0;
136 }
137
138 static int wifi_resume(struct platform_device *pdev)
139 {
140 DHD_TRACE(("##> %s\n", __func__));
141 return 0;
142 }
143
144 static struct platform_driver wifi_device = {
145 .probe = wifi_probe,
146 .remove = wifi_remove,
147 .suspend = wifi_suspend,
148 .resume = wifi_resume,
149 .driver = {
150 .name = KBUILD_MODNAME,
151 }
152 };
153
154 int wifi_add_dev(void)
155 {
156 DHD_TRACE(("## Calling platform_driver_register\n"));
157 return platform_driver_register(&wifi_device);
158 }
159
160 void wifi_del_dev(void)
161 {
162 DHD_TRACE(("## Unregister platform_driver_register\n"));
163 platform_driver_unregister(&wifi_device);
164 }
165 #endif /* defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC) */
166
167 #if defined(CONFIG_PM_SLEEP)
168 #include <linux/suspend.h>
169 volatile bool dhd_mmc_suspend = false;
170 DECLARE_WAIT_QUEUE_HEAD(dhd_dpc_wait);
171 #endif /* defined(CONFIG_PM_SLEEP) */
172
173 #if defined(OOB_INTR_ONLY)
174 extern void dhd_enable_oob_intr(struct dhd_bus *bus, bool enable);
175 #endif /* defined(OOB_INTR_ONLY) */
176
177 MODULE_AUTHOR("Broadcom Corporation");
178 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac driver.");
179 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac cards");
180 MODULE_LICENSE("Dual BSD/GPL");
181
182 #define DRV_MODULE_NAME "brcmfmac"
183
184 /* Linux wireless extension support */
185 #if defined(CONFIG_WIRELESS_EXT)
186 #include <wl_iw.h>
187 extern wl_iw_extra_params_t g_wl_iw_params;
188 #endif /* defined(CONFIG_WIRELESS_EXT) */
189
190 #if defined(CONFIG_HAS_EARLYSUSPEND)
191 #include <linux/earlysuspend.h>
192 extern int dhdcdc_set_ioctl(dhd_pub_t *dhd, int ifidx, uint cmd, void *buf,
193 uint len);
194 #endif /* defined(CONFIG_HAS_EARLYSUSPEND) */
195
196 #ifdef PKT_FILTER_SUPPORT
197 extern void dhd_pktfilter_offload_set(dhd_pub_t *dhd, char *arg);
198 extern void dhd_pktfilter_offload_enable(dhd_pub_t *dhd, char *arg, int enable,
199 int master_mode);
200 #endif
201
202 /* Interface control information */
203 typedef struct dhd_if {
204 struct dhd_info *info; /* back pointer to dhd_info */
205 /* OS/stack specifics */
206 struct net_device *net;
207 struct net_device_stats stats;
208 int idx; /* iface idx in dongle */
209 int state; /* interface state */
210 uint subunit; /* subunit */
211 u8 mac_addr[ETH_ALEN]; /* assigned MAC address */
212 bool attached; /* Delayed attachment when unset */
213 bool txflowcontrol; /* Per interface flow control indicator */
214 char name[IFNAMSIZ]; /* linux interface name */
215 } dhd_if_t;
216
217 /* Local private structure (extension of pub) */
218 typedef struct dhd_info {
219 #if defined(CONFIG_WIRELESS_EXT)
220 wl_iw_t iw; /* wireless extensions state (must be first) */
221 #endif /* defined(CONFIG_WIRELESS_EXT) */
222
223 dhd_pub_t pub;
224
225 /* OS/stack specifics */
226 dhd_if_t *iflist[DHD_MAX_IFS];
227
228 struct semaphore proto_sem;
229 wait_queue_head_t ioctl_resp_wait;
230 struct timer_list timer;
231 bool wd_timer_valid;
232 struct tasklet_struct tasklet;
233 spinlock_t sdlock;
234 spinlock_t txqlock;
235 /* Thread based operation */
236 bool threads_only;
237 struct semaphore sdsem;
238 struct task_struct *watchdog_tsk;
239 struct semaphore watchdog_sem;
240 struct task_struct *dpc_tsk;
241 struct semaphore dpc_sem;
242
243 /* Thread to issue ioctl for multicast */
244 struct task_struct *sysioc_tsk;
245 struct semaphore sysioc_sem;
246 bool set_multicast;
247 bool set_macaddress;
248 u8 macvalue[ETH_ALEN];
249 wait_queue_head_t ctrl_wait;
250 atomic_t pend_8021x_cnt;
251
252 #ifdef CONFIG_HAS_EARLYSUSPEND
253 struct early_suspend early_suspend;
254 #endif /* CONFIG_HAS_EARLYSUSPEND */
255 } dhd_info_t;
256
257 /* Definitions to provide path to the firmware and nvram
258 * example nvram_path[MOD_PARAM_PATHLEN]="/projects/wlan/nvram.txt"
259 */
260 char firmware_path[MOD_PARAM_PATHLEN];
261 char nvram_path[MOD_PARAM_PATHLEN];
262
263 /* load firmware and/or nvram values from the filesystem */
264 module_param_string(firmware_path, firmware_path, MOD_PARAM_PATHLEN, 0);
265 module_param_string(nvram_path, nvram_path, MOD_PARAM_PATHLEN, 0);
266
267 /* Error bits */
268 module_param(dhd_msg_level, int, 0);
269
270 /* Spawn a thread for system ioctls (set mac, set mcast) */
271 uint dhd_sysioc = true;
272 module_param(dhd_sysioc, uint, 0);
273
274 /* Watchdog interval */
275 uint dhd_watchdog_ms = 10;
276 module_param(dhd_watchdog_ms, uint, 0);
277
278 #ifdef DHD_DEBUG
279 /* Console poll interval */
280 uint dhd_console_ms;
281 module_param(dhd_console_ms, uint, 0);
282 #endif /* DHD_DEBUG */
283
284 /* ARP offload agent mode : Enable ARP Host Auto-Reply
285 and ARP Peer Auto-Reply */
286 uint dhd_arp_mode = 0xb;
287 module_param(dhd_arp_mode, uint, 0);
288
289 /* ARP offload enable */
290 uint dhd_arp_enable = true;
291 module_param(dhd_arp_enable, uint, 0);
292
293 /* Global Pkt filter enable control */
294 uint dhd_pkt_filter_enable = true;
295 module_param(dhd_pkt_filter_enable, uint, 0);
296
297 /* Pkt filter init setup */
298 uint dhd_pkt_filter_init;
299 module_param(dhd_pkt_filter_init, uint, 0);
300
301 /* Pkt filter mode control */
302 uint dhd_master_mode = true;
303 module_param(dhd_master_mode, uint, 1);
304
305 /* Watchdog thread priority, -1 to use kernel timer */
306 int dhd_watchdog_prio = 97;
307 module_param(dhd_watchdog_prio, int, 0);
308
309 /* DPC thread priority, -1 to use tasklet */
310 int dhd_dpc_prio = 98;
311 module_param(dhd_dpc_prio, int, 0);
312
313 /* DPC thread priority, -1 to use tasklet */
314 extern int dhd_dongle_memsize;
315 module_param(dhd_dongle_memsize, int, 0);
316
317 /* Contorl fw roaming */
318 #ifdef CUSTOMER_HW2
319 uint dhd_roam;
320 #else
321 uint dhd_roam = 1;
322 #endif
323
324 /* Control radio state */
325 uint dhd_radio_up = 1;
326
327 /* Network inteface name */
328 char iface_name[IFNAMSIZ];
329 module_param_string(iface_name, iface_name, IFNAMSIZ, 0);
330
331 /* The following are specific to the SDIO dongle */
332
333 /* IOCTL response timeout */
334 int dhd_ioctl_timeout_msec = IOCTL_RESP_TIMEOUT;
335
336 /* Idle timeout for backplane clock */
337 int dhd_idletime = DHD_IDLETIME_TICKS;
338 module_param(dhd_idletime, int, 0);
339
340 /* Use polling */
341 uint dhd_poll = false;
342 module_param(dhd_poll, uint, 0);
343
344 /* Use cfg80211 */
345 uint dhd_cfg80211 = true;
346 module_param(dhd_cfg80211, uint, 0);
347
348 /* Use interrupts */
349 uint dhd_intr = true;
350 module_param(dhd_intr, uint, 0);
351
352 /* SDIO Drive Strength (in milliamps) */
353 uint dhd_sdiod_drive_strength = 6;
354 module_param(dhd_sdiod_drive_strength, uint, 0);
355
356 /* Tx/Rx bounds */
357 extern uint dhd_txbound;
358 extern uint dhd_rxbound;
359 module_param(dhd_txbound, uint, 0);
360 module_param(dhd_rxbound, uint, 0);
361
362 /* Deferred transmits */
363 extern uint dhd_deferred_tx;
364 module_param(dhd_deferred_tx, uint, 0);
365
366 #ifdef SDTEST
367 /* Echo packet generator (pkts/s) */
368 uint dhd_pktgen;
369 module_param(dhd_pktgen, uint, 0);
370
371 /* Echo packet len (0 => sawtooth, max 2040) */
372 uint dhd_pktgen_len;
373 module_param(dhd_pktgen_len, uint, 0);
374 #endif
375
376 #define FAVORITE_WIFI_CP (!!dhd_cfg80211)
377 #define IS_CFG80211_FAVORITE() FAVORITE_WIFI_CP
378 #define DBG_CFG80211_GET() ((dhd_cfg80211 & WL_DBG_MASK) >> 1)
379 #define NO_FW_REQ() (dhd_cfg80211 & 0x80)
380
381 /* Version string to report */
382 #ifdef DHD_DEBUG
383 #define DHD_COMPILED "\nCompiled in " SRCBASE
384 #else
385 #define DHD_COMPILED
386 #endif
387
388 #if defined(CONFIG_WIRELESS_EXT)
389 struct iw_statistics *dhd_get_wireless_stats(struct net_device *dev);
390 #endif /* defined(CONFIG_WIRELESS_EXT) */
391
392 static void dhd_dpc(unsigned long data);
393 /* forward decl */
394 extern int dhd_wait_pend8021x(struct net_device *dev);
395
396 #ifdef TOE
397 #ifndef BDC
398 #error TOE requires BDC
399 #endif /* !BDC */
400 static int dhd_toe_get(dhd_info_t *dhd, int idx, u32 *toe_ol);
401 static int dhd_toe_set(dhd_info_t *dhd, int idx, u32 toe_ol);
402 #endif /* TOE */
403
404 static int dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
405 wl_event_msg_t *event_ptr, void **data_ptr);
406
407 #if defined(CONFIG_PM_SLEEP)
408 static int dhd_sleep_pm_callback(struct notifier_block *nfb,
409 unsigned long action, void *ignored)
410 {
411 switch (action) {
412 case PM_HIBERNATION_PREPARE:
413 case PM_SUSPEND_PREPARE:
414 dhd_mmc_suspend = true;
415 return NOTIFY_OK;
416 case PM_POST_HIBERNATION:
417 case PM_POST_SUSPEND:
418 dhd_mmc_suspend = false;
419 return NOTIFY_OK;
420 }
421 return 0;
422 }
423
424 static struct notifier_block dhd_sleep_pm_notifier = {
425 .notifier_call = dhd_sleep_pm_callback,
426 .priority = 0
427 };
428
429 extern int register_pm_notifier(struct notifier_block *nb);
430 extern int unregister_pm_notifier(struct notifier_block *nb);
431 #endif /* defined(CONFIG_PM_SLEEP) */
432 /* && defined(DHD_GPL) */
433 static void dhd_set_packet_filter(int value, dhd_pub_t *dhd)
434 {
435 #ifdef PKT_FILTER_SUPPORT
436 DHD_TRACE(("%s: %d\n", __func__, value));
437 /* 1 - Enable packet filter, only allow unicast packet to send up */
438 /* 0 - Disable packet filter */
439 if (dhd_pkt_filter_enable) {
440 int i;
441
442 for (i = 0; i < dhd->pktfilter_count; i++) {
443 dhd_pktfilter_offload_set(dhd, dhd->pktfilter[i]);
444 dhd_pktfilter_offload_enable(dhd, dhd->pktfilter[i],
445 value, dhd_master_mode);
446 }
447 }
448 #endif
449 }
450
451 #if defined(CONFIG_HAS_EARLYSUSPEND)
452 static int dhd_set_suspend(int value, dhd_pub_t *dhd)
453 {
454 int power_mode = PM_MAX;
455 /* wl_pkt_filter_enable_t enable_parm; */
456 char iovbuf[32];
457 int bcn_li_dtim = 3;
458 #ifdef CUSTOMER_HW2
459 uint roamvar = 1;
460 #endif /* CUSTOMER_HW2 */
461
462 DHD_TRACE(("%s: enter, value = %d in_suspend=%d\n",
463 __func__, value, dhd->in_suspend));
464
465 if (dhd && dhd->up) {
466 if (value && dhd->in_suspend) {
467
468 /* Kernel suspended */
469 DHD_TRACE(("%s: force extra Suspend setting\n",
470 __func__));
471
472 dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
473 (char *)&power_mode,
474 sizeof(power_mode));
475
476 /* Enable packet filter, only allow unicast
477 packet to send up */
478 dhd_set_packet_filter(1, dhd);
479
480 /* if dtim skip setup as default force it
481 * to wake each third dtim
482 * for better power saving.
483 * Note that side effect is chance to miss BC/MC
484 * packet
485 */
486 if ((dhd->dtim_skip == 0) || (dhd->dtim_skip == 1))
487 bcn_li_dtim = 3;
488 else
489 bcn_li_dtim = dhd->dtim_skip;
490 bcm_mkiovar("bcn_li_dtim", (char *)&bcn_li_dtim,
491 4, iovbuf, sizeof(iovbuf));
492 dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
493 sizeof(iovbuf));
494 #ifdef CUSTOMER_HW2
495 /* Disable build-in roaming to allowed \
496 * supplicant to take of romaing
497 */
498 bcm_mkiovar("roam_off", (char *)&roamvar, 4,
499 iovbuf, sizeof(iovbuf));
500 dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
501 sizeof(iovbuf));
502 #endif /* CUSTOMER_HW2 */
503 } else {
504
505 /* Kernel resumed */
506 DHD_TRACE(("%s: Remove extra suspend setting\n",
507 __func__));
508
509 power_mode = PM_FAST;
510 dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
511 (char *)&power_mode,
512 sizeof(power_mode));
513
514 /* disable pkt filter */
515 dhd_set_packet_filter(0, dhd);
516
517 /* restore pre-suspend setting for dtim_skip */
518 bcm_mkiovar("bcn_li_dtim", (char *)&dhd->dtim_skip,
519 4, iovbuf, sizeof(iovbuf));
520
521 dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
522 sizeof(iovbuf));
523 #ifdef CUSTOMER_HW2
524 roamvar = 0;
525 bcm_mkiovar("roam_off", (char *)&roamvar, 4, iovbuf,
526 sizeof(iovbuf));
527 dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
528 sizeof(iovbuf));
529 #endif /* CUSTOMER_HW2 */
530 }
531 }
532
533 return 0;
534 }
535
536 static void dhd_suspend_resume_helper(struct dhd_info *dhd, int val)
537 {
538 dhd_pub_t *dhdp = &dhd->pub;
539
540 dhd_os_proto_block(dhdp);
541 /* Set flag when early suspend was called */
542 dhdp->in_suspend = val;
543 if (!dhdp->suspend_disable_flag)
544 dhd_set_suspend(val, dhdp);
545 dhd_os_proto_unblock(dhdp);
546 }
547
548 static void dhd_early_suspend(struct early_suspend *h)
549 {
550 struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
551
552 DHD_TRACE(("%s: enter\n", __func__));
553
554 if (dhd)
555 dhd_suspend_resume_helper(dhd, 1);
556
557 }
558
559 static void dhd_late_resume(struct early_suspend *h)
560 {
561 struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
562
563 DHD_TRACE(("%s: enter\n", __func__));
564
565 if (dhd)
566 dhd_suspend_resume_helper(dhd, 0);
567 }
568 #endif /* defined(CONFIG_HAS_EARLYSUSPEND) */
569
570 /*
571 * Generalized timeout mechanism. Uses spin sleep with exponential
572 * back-off until
573 * the sleep time reaches one jiffy, then switches over to task delay. Usage:
574 *
575 * dhd_timeout_start(&tmo, usec);
576 * while (!dhd_timeout_expired(&tmo))
577 * if (poll_something())
578 * break;
579 * if (dhd_timeout_expired(&tmo))
580 * fatal();
581 */
582
583 void dhd_timeout_start(dhd_timeout_t *tmo, uint usec)
584 {
585 tmo->limit = usec;
586 tmo->increment = 0;
587 tmo->elapsed = 0;
588 tmo->tick = 1000000 / HZ;
589 }
590
591 int dhd_timeout_expired(dhd_timeout_t *tmo)
592 {
593 /* Does nothing the first call */
594 if (tmo->increment == 0) {
595 tmo->increment = 1;
596 return 0;
597 }
598
599 if (tmo->elapsed >= tmo->limit)
600 return 1;
601
602 /* Add the delay that's about to take place */
603 tmo->elapsed += tmo->increment;
604
605 if (tmo->increment < tmo->tick) {
606 udelay(tmo->increment);
607 tmo->increment *= 2;
608 if (tmo->increment > tmo->tick)
609 tmo->increment = tmo->tick;
610 } else {
611 wait_queue_head_t delay_wait;
612 DECLARE_WAITQUEUE(wait, current);
613 int pending;
614 init_waitqueue_head(&delay_wait);
615 add_wait_queue(&delay_wait, &wait);
616 set_current_state(TASK_INTERRUPTIBLE);
617 schedule_timeout(1);
618 pending = signal_pending(current);
619 remove_wait_queue(&delay_wait, &wait);
620 set_current_state(TASK_RUNNING);
621 if (pending)
622 return 1; /* Interrupted */
623 }
624
625 return 0;
626 }
627
628 static int dhd_net2idx(dhd_info_t *dhd, struct net_device *net)
629 {
630 int i = 0;
631
632 ASSERT(dhd);
633 while (i < DHD_MAX_IFS) {
634 if (dhd->iflist[i] && (dhd->iflist[i]->net == net))
635 return i;
636 i++;
637 }
638
639 return DHD_BAD_IF;
640 }
641
642 int dhd_ifname2idx(dhd_info_t *dhd, char *name)
643 {
644 int i = DHD_MAX_IFS;
645
646 ASSERT(dhd);
647
648 if (name == NULL || *name == '\0')
649 return 0;
650
651 while (--i > 0)
652 if (dhd->iflist[i]
653 && !strncmp(dhd->iflist[i]->name, name, IFNAMSIZ))
654 break;
655
656 DHD_TRACE(("%s: return idx %d for \"%s\"\n", __func__, i, name));
657
658 return i; /* default - the primary interface */
659 }
660
661 char *dhd_ifname(dhd_pub_t *dhdp, int ifidx)
662 {
663 dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
664
665 ASSERT(dhd);
666
667 if (ifidx < 0 || ifidx >= DHD_MAX_IFS) {
668 DHD_ERROR(("%s: ifidx %d out of range\n", __func__, ifidx));
669 return "<if_bad>";
670 }
671
672 if (dhd->iflist[ifidx] == NULL) {
673 DHD_ERROR(("%s: null i/f %d\n", __func__, ifidx));
674 return "<if_null>";
675 }
676
677 if (dhd->iflist[ifidx]->net)
678 return dhd->iflist[ifidx]->net->name;
679
680 return "<if_none>";
681 }
682
683 static void _dhd_set_multicast_list(dhd_info_t *dhd, int ifidx)
684 {
685 struct net_device *dev;
686 struct netdev_hw_addr *ha;
687 u32 allmulti, cnt;
688
689 wl_ioctl_t ioc;
690 char *buf, *bufp;
691 uint buflen;
692 int ret;
693
694 ASSERT(dhd && dhd->iflist[ifidx]);
695 dev = dhd->iflist[ifidx]->net;
696 cnt = netdev_mc_count(dev);
697
698 /* Determine initial value of allmulti flag */
699 allmulti = (dev->flags & IFF_ALLMULTI) ? true : false;
700
701 /* Send down the multicast list first. */
702
703 buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETH_ALEN);
704 bufp = buf = kmalloc(buflen, GFP_ATOMIC);
705 if (!bufp) {
706 DHD_ERROR(("%s: out of memory for mcast_list, cnt %d\n",
707 dhd_ifname(&dhd->pub, ifidx), cnt));
708 return;
709 }
710
711 strcpy(bufp, "mcast_list");
712 bufp += strlen("mcast_list") + 1;
713
714 cnt = cpu_to_le32(cnt);
715 memcpy(bufp, &cnt, sizeof(cnt));
716 bufp += sizeof(cnt);
717
718 netdev_for_each_mc_addr(ha, dev) {
719 if (!cnt)
720 break;
721 memcpy(bufp, ha->addr, ETH_ALEN);
722 bufp += ETH_ALEN;
723 cnt--;
724 }
725
726 memset(&ioc, 0, sizeof(ioc));
727 ioc.cmd = WLC_SET_VAR;
728 ioc.buf = buf;
729 ioc.len = buflen;
730 ioc.set = true;
731
732 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
733 if (ret < 0) {
734 DHD_ERROR(("%s: set mcast_list failed, cnt %d\n",
735 dhd_ifname(&dhd->pub, ifidx), cnt));
736 allmulti = cnt ? true : allmulti;
737 }
738
739 kfree(buf);
740
741 /* Now send the allmulti setting. This is based on the setting in the
742 * net_device flags, but might be modified above to be turned on if we
743 * were trying to set some addresses and dongle rejected it...
744 */
745
746 buflen = sizeof("allmulti") + sizeof(allmulti);
747 buf = kmalloc(buflen, GFP_ATOMIC);
748 if (!buf) {
749 DHD_ERROR(("%s: out of memory for allmulti\n",
750 dhd_ifname(&dhd->pub, ifidx)));
751 return;
752 }
753 allmulti = cpu_to_le32(allmulti);
754
755 if (!bcm_mkiovar
756 ("allmulti", (void *)&allmulti, sizeof(allmulti), buf, buflen)) {
757 DHD_ERROR(("%s: mkiovar failed for allmulti, datalen %d "
758 "buflen %u\n", dhd_ifname(&dhd->pub, ifidx),
759 (int)sizeof(allmulti), buflen));
760 kfree(buf);
761 return;
762 }
763
764 memset(&ioc, 0, sizeof(ioc));
765 ioc.cmd = WLC_SET_VAR;
766 ioc.buf = buf;
767 ioc.len = buflen;
768 ioc.set = true;
769
770 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
771 if (ret < 0) {
772 DHD_ERROR(("%s: set allmulti %d failed\n",
773 dhd_ifname(&dhd->pub, ifidx),
774 le32_to_cpu(allmulti)));
775 }
776
777 kfree(buf);
778
779 /* Finally, pick up the PROMISC flag as well, like the NIC
780 driver does */
781
782 allmulti = (dev->flags & IFF_PROMISC) ? true : false;
783 allmulti = cpu_to_le32(allmulti);
784
785 memset(&ioc, 0, sizeof(ioc));
786 ioc.cmd = WLC_SET_PROMISC;
787 ioc.buf = &allmulti;
788 ioc.len = sizeof(allmulti);
789 ioc.set = true;
790
791 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
792 if (ret < 0) {
793 DHD_ERROR(("%s: set promisc %d failed\n",
794 dhd_ifname(&dhd->pub, ifidx),
795 le32_to_cpu(allmulti)));
796 }
797 }
798
799 static int
800 _dhd_set_mac_address(dhd_info_t *dhd, int ifidx, u8 *addr)
801 {
802 char buf[32];
803 wl_ioctl_t ioc;
804 int ret;
805
806 DHD_TRACE(("%s enter\n", __func__));
807 if (!bcm_mkiovar
808 ("cur_etheraddr", (char *)addr, ETH_ALEN, buf, 32)) {
809 DHD_ERROR(("%s: mkiovar failed for cur_etheraddr\n",
810 dhd_ifname(&dhd->pub, ifidx)));
811 return -1;
812 }
813 memset(&ioc, 0, sizeof(ioc));
814 ioc.cmd = WLC_SET_VAR;
815 ioc.buf = buf;
816 ioc.len = 32;
817 ioc.set = true;
818
819 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
820 if (ret < 0) {
821 DHD_ERROR(("%s: set cur_etheraddr failed\n",
822 dhd_ifname(&dhd->pub, ifidx)));
823 } else {
824 memcpy(dhd->iflist[ifidx]->net->dev_addr, addr, ETH_ALEN);
825 }
826
827 return ret;
828 }
829
830 #ifdef SOFTAP
831 extern struct net_device *ap_net_dev;
832 #endif
833
834 static void dhd_op_if(dhd_if_t *ifp)
835 {
836 dhd_info_t *dhd;
837 int ret = 0, err = 0;
838
839 ASSERT(ifp && ifp->info && ifp->idx); /* Virtual interfaces only */
840
841 dhd = ifp->info;
842
843 DHD_TRACE(("%s: idx %d, state %d\n", __func__, ifp->idx, ifp->state));
844
845 switch (ifp->state) {
846 case WLC_E_IF_ADD:
847 /*
848 * Delete the existing interface before overwriting it
849 * in case we missed the WLC_E_IF_DEL event.
850 */
851 if (ifp->net != NULL) {
852 DHD_ERROR(("%s: ERROR: netdev:%s already exists, "
853 "try free & unregister\n",
854 __func__, ifp->net->name));
855 netif_stop_queue(ifp->net);
856 unregister_netdev(ifp->net);
857 free_netdev(ifp->net);
858 }
859 /* Allocate etherdev, including space for private structure */
860 ifp->net = alloc_etherdev(sizeof(dhd));
861 if (!ifp->net) {
862 DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
863 ret = -ENOMEM;
864 }
865 if (ret == 0) {
866 strcpy(ifp->net->name, ifp->name);
867 memcpy(netdev_priv(ifp->net), &dhd, sizeof(dhd));
868 err = dhd_net_attach(&dhd->pub, ifp->idx);
869 if (err != 0) {
870 DHD_ERROR(("%s: dhd_net_attach failed, "
871 "err %d\n",
872 __func__, err));
873 ret = -EOPNOTSUPP;
874 } else {
875 #ifdef SOFTAP
876 /* semaphore that the soft AP CODE
877 waits on */
878 extern struct semaphore ap_eth_sema;
879
880 /* save ptr to wl0.1 netdev for use
881 in wl_iw.c */
882 ap_net_dev = ifp->net;
883 /* signal to the SOFTAP 'sleeper' thread,
884 wl0.1 is ready */
885 up(&ap_eth_sema);
886 #endif
887 DHD_TRACE(("\n ==== pid:%x, net_device for "
888 "if:%s created ===\n\n",
889 current->pid, ifp->net->name));
890 ifp->state = 0;
891 }
892 }
893 break;
894 case WLC_E_IF_DEL:
895 if (ifp->net != NULL) {
896 DHD_TRACE(("\n%s: got 'WLC_E_IF_DEL' state\n",
897 __func__));
898 netif_stop_queue(ifp->net);
899 unregister_netdev(ifp->net);
900 ret = DHD_DEL_IF; /* Make sure the free_netdev()
901 is called */
902 }
903 break;
904 default:
905 DHD_ERROR(("%s: bad op %d\n", __func__, ifp->state));
906 ASSERT(!ifp->state);
907 break;
908 }
909
910 if (ret < 0) {
911 if (ifp->net)
912 free_netdev(ifp->net);
913
914 dhd->iflist[ifp->idx] = NULL;
915 kfree(ifp);
916 #ifdef SOFTAP
917 if (ifp->net == ap_net_dev)
918 ap_net_dev = NULL; /* NULL SOFTAP global
919 wl0.1 as well */
920 #endif /* SOFTAP */
921 }
922 }
923
924 static int _dhd_sysioc_thread(void *data)
925 {
926 dhd_info_t *dhd = (dhd_info_t *) data;
927 int i;
928 #ifdef SOFTAP
929 bool in_ap = false;
930 #endif
931
932 allow_signal(SIGTERM);
933
934 while (down_interruptible(&dhd->sysioc_sem) == 0) {
935 if (kthread_should_stop())
936 break;
937 for (i = 0; i < DHD_MAX_IFS; i++) {
938 if (dhd->iflist[i]) {
939 #ifdef SOFTAP
940 in_ap = (ap_net_dev != NULL);
941 #endif /* SOFTAP */
942 if (dhd->iflist[i]->state)
943 dhd_op_if(dhd->iflist[i]);
944 #ifdef SOFTAP
945 if (dhd->iflist[i] == NULL) {
946 DHD_TRACE(("\n\n %s: interface %d "
947 "removed!\n", __func__, i));
948 continue;
949 }
950
951 if (in_ap && dhd->set_macaddress) {
952 DHD_TRACE(("attempt to set MAC for %s "
953 "in AP Mode," "blocked. \n",
954 dhd->iflist[i]->net->name));
955 dhd->set_macaddress = false;
956 continue;
957 }
958
959 if (in_ap && dhd->set_multicast) {
960 DHD_TRACE(("attempt to set MULTICAST list for %s" "in AP Mode, blocked. \n",
961 dhd->iflist[i]->net->name));
962 dhd->set_multicast = false;
963 continue;
964 }
965 #endif /* SOFTAP */
966 if (dhd->set_multicast) {
967 dhd->set_multicast = false;
968 _dhd_set_multicast_list(dhd, i);
969 }
970 if (dhd->set_macaddress) {
971 dhd->set_macaddress = false;
972 _dhd_set_mac_address(dhd, i,
973 dhd->macvalue);
974 }
975 }
976 }
977 }
978 return 0;
979 }
980
981 static int dhd_set_mac_address(struct net_device *dev, void *addr)
982 {
983 int ret = 0;
984
985 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
986 struct sockaddr *sa = (struct sockaddr *)addr;
987 int ifidx;
988
989 ifidx = dhd_net2idx(dhd, dev);
990 if (ifidx == DHD_BAD_IF)
991 return -1;
992
993 ASSERT(dhd->sysioc_tsk);
994 memcpy(&dhd->macvalue, sa->sa_data, ETH_ALEN);
995 dhd->set_macaddress = true;
996 up(&dhd->sysioc_sem);
997
998 return ret;
999 }
1000
1001 static void dhd_set_multicast_list(struct net_device *dev)
1002 {
1003 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
1004 int ifidx;
1005
1006 ifidx = dhd_net2idx(dhd, dev);
1007 if (ifidx == DHD_BAD_IF)
1008 return;
1009
1010 ASSERT(dhd->sysioc_tsk);
1011 dhd->set_multicast = true;
1012 up(&dhd->sysioc_sem);
1013 }
1014
1015 int dhd_sendpkt(dhd_pub_t *dhdp, int ifidx, struct sk_buff *pktbuf)
1016 {
1017 int ret;
1018 dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);
1019
1020 /* Reject if down */
1021 if (!dhdp->up || (dhdp->busstate == DHD_BUS_DOWN))
1022 return -ENODEV;
1023
1024 /* Update multicast statistic */
1025 if (pktbuf->len >= ETH_ALEN) {
1026 u8 *pktdata = (u8 *) (pktbuf->data);
1027 struct ethhdr *eh = (struct ethhdr *)pktdata;
1028
1029 if (is_multicast_ether_addr(eh->h_dest))
1030 dhdp->tx_multicast++;
1031 if (ntohs(eh->h_proto) == ETH_P_PAE)
1032 atomic_inc(&dhd->pend_8021x_cnt);
1033 }
1034
1035 /* If the protocol uses a data header, apply it */
1036 dhd_prot_hdrpush(dhdp, ifidx, pktbuf);
1037
1038 /* Use bus module to send data frame */
1039 #ifdef BCMDBUS
1040 ret = dbus_send_pkt(dhdp->dbus, pktbuf, NULL /* pktinfo */);
1041 #else
1042 ret = dhd_bus_txdata(dhdp->bus, pktbuf);
1043 #endif /* BCMDBUS */
1044
1045 return ret;
1046 }
1047
1048 static inline void *
1049 osl_pkt_frmnative(struct sk_buff *skb)
1050 {
1051 return (void *)skb;
1052 }
1053 #define PKTFRMNATIVE(osh, skb) \
1054 osl_pkt_frmnative((struct sk_buff *)(skb))
1055
1056 static inline struct sk_buff *
1057 osl_pkt_tonative(void *pkt)
1058 {
1059 return (struct sk_buff *)pkt;
1060 }
1061 #define PKTTONATIVE(osh, pkt) \
1062 osl_pkt_tonative((pkt))
1063
1064 static int dhd_start_xmit(struct sk_buff *skb, struct net_device *net)
1065 {
1066 int ret;
1067 void *pktbuf;
1068 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1069 int ifidx;
1070
1071 DHD_TRACE(("%s: Enter\n", __func__));
1072
1073 /* Reject if down */
1074 if (!dhd->pub.up || (dhd->pub.busstate == DHD_BUS_DOWN)) {
1075 DHD_ERROR(("%s: xmit rejected pub.up=%d busstate=%d\n",
1076 __func__, dhd->pub.up, dhd->pub.busstate));
1077 netif_stop_queue(net);
1078 return -ENODEV;
1079 }
1080
1081 ifidx = dhd_net2idx(dhd, net);
1082 if (ifidx == DHD_BAD_IF) {
1083 DHD_ERROR(("%s: bad ifidx %d\n", __func__, ifidx));
1084 netif_stop_queue(net);
1085 return -ENODEV;
1086 }
1087
1088 /* Make sure there's enough room for any header */
1089 if (skb_headroom(skb) < dhd->pub.hdrlen) {
1090 struct sk_buff *skb2;
1091
1092 DHD_INFO(("%s: insufficient headroom\n",
1093 dhd_ifname(&dhd->pub, ifidx)));
1094 dhd->pub.tx_realloc++;
1095 skb2 = skb_realloc_headroom(skb, dhd->pub.hdrlen);
1096 dev_kfree_skb(skb);
1097 skb = skb2;
1098 if (skb == NULL) {
1099 DHD_ERROR(("%s: skb_realloc_headroom failed\n",
1100 dhd_ifname(&dhd->pub, ifidx)));
1101 ret = -ENOMEM;
1102 goto done;
1103 }
1104 }
1105
1106 /* Convert to packet */
1107 pktbuf = PKTFRMNATIVE(dhd->pub.osh, skb);
1108 if (!pktbuf) {
1109 DHD_ERROR(("%s: PKTFRMNATIVE failed\n",
1110 dhd_ifname(&dhd->pub, ifidx)));
1111 dev_kfree_skb_any(skb);
1112 ret = -ENOMEM;
1113 goto done;
1114 }
1115
1116 ret = dhd_sendpkt(&dhd->pub, ifidx, pktbuf);
1117
1118 done:
1119 if (ret)
1120 dhd->pub.dstats.tx_dropped++;
1121 else
1122 dhd->pub.tx_packets++;
1123
1124 /* Return ok: we always eat the packet */
1125 return 0;
1126 }
1127
1128 void dhd_txflowcontrol(dhd_pub_t *dhdp, int ifidx, bool state)
1129 {
1130 struct net_device *net;
1131 dhd_info_t *dhd = dhdp->info;
1132
1133 DHD_TRACE(("%s: Enter\n", __func__));
1134
1135 dhdp->txoff = state;
1136 ASSERT(dhd && dhd->iflist[ifidx]);
1137 net = dhd->iflist[ifidx]->net;
1138 if (state == ON)
1139 netif_stop_queue(net);
1140 else
1141 netif_wake_queue(net);
1142 }
1143
1144 void dhd_rx_frame(dhd_pub_t *dhdp, int ifidx, struct sk_buff *pktbuf,
1145 int numpkt)
1146 {
1147 dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
1148 struct sk_buff *skb;
1149 unsigned char *eth;
1150 uint len;
1151 void *data;
1152 struct sk_buff *pnext, *save_pktbuf;
1153 int i;
1154 dhd_if_t *ifp;
1155 wl_event_msg_t event;
1156
1157 DHD_TRACE(("%s: Enter\n", __func__));
1158
1159 save_pktbuf = pktbuf;
1160
1161 for (i = 0; pktbuf && i < numpkt; i++, pktbuf = pnext) {
1162
1163 pnext = pktbuf->next;
1164 pktbuf->next = NULL;
1165
1166 skb = PKTTONATIVE(dhdp->osh, pktbuf);
1167
1168 /* Get the protocol, maintain skb around eth_type_trans()
1169 * The main reason for this hack is for the limitation of
1170 * Linux 2.4 where 'eth_type_trans' uses the
1171 * 'net->hard_header_len'
1172 * to perform skb_pull inside vs ETH_HLEN. Since to avoid
1173 * coping of the packet coming from the network stack to add
1174 * BDC, Hardware header etc, during network interface
1175 * registration
1176 * we set the 'net->hard_header_len' to ETH_HLEN + extra space
1177 * required
1178 * for BDC, Hardware header etc. and not just the ETH_HLEN
1179 */
1180 eth = skb->data;
1181 len = skb->len;
1182
1183 ifp = dhd->iflist[ifidx];
1184 if (ifp == NULL)
1185 ifp = dhd->iflist[0];
1186
1187 ASSERT(ifp);
1188 skb->dev = ifp->net;
1189 skb->protocol = eth_type_trans(skb, skb->dev);
1190
1191 if (skb->pkt_type == PACKET_MULTICAST)
1192 dhd->pub.rx_multicast++;
1193
1194 skb->data = eth;
1195 skb->len = len;
1196
1197 /* Strip header, count, deliver upward */
1198 skb_pull(skb, ETH_HLEN);
1199
1200 /* Process special event packets and then discard them */
1201 if (ntohs(skb->protocol) == ETH_P_BRCM)
1202 dhd_wl_host_event(dhd, &ifidx,
1203 skb_mac_header(skb),
1204 &event, &data);
1205
1206 ASSERT(ifidx < DHD_MAX_IFS && dhd->iflist[ifidx]);
1207 if (dhd->iflist[ifidx] && !dhd->iflist[ifidx]->state)
1208 ifp = dhd->iflist[ifidx];
1209
1210 if (ifp->net)
1211 ifp->net->last_rx = jiffies;
1212
1213 dhdp->dstats.rx_bytes += skb->len;
1214 dhdp->rx_packets++; /* Local count */
1215
1216 if (in_interrupt()) {
1217 netif_rx(skb);
1218 } else {
1219 /* If the receive is not processed inside an ISR,
1220 * the softirqd must be woken explicitly to service
1221 * the NET_RX_SOFTIRQ. In 2.6 kernels, this is handled
1222 * by netif_rx_ni(), but in earlier kernels, we need
1223 * to do it manually.
1224 */
1225 netif_rx_ni(skb);
1226 }
1227 }
1228 }
1229
1230 void dhd_event(struct dhd_info *dhd, char *evpkt, int evlen, int ifidx)
1231 {
1232 /* Linux version has nothing to do */
1233 return;
1234 }
1235
1236 void dhd_txcomplete(dhd_pub_t *dhdp, struct sk_buff *txp, bool success)
1237 {
1238 uint ifidx;
1239 dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);
1240 struct ethhdr *eh;
1241 u16 type;
1242
1243 dhd_prot_hdrpull(dhdp, &ifidx, txp);
1244
1245 eh = (struct ethhdr *)(txp->data);
1246 type = ntohs(eh->h_proto);
1247
1248 if (type == ETH_P_PAE)
1249 atomic_dec(&dhd->pend_8021x_cnt);
1250
1251 }
1252
1253 static struct net_device_stats *dhd_get_stats(struct net_device *net)
1254 {
1255 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1256 dhd_if_t *ifp;
1257 int ifidx;
1258
1259 DHD_TRACE(("%s: Enter\n", __func__));
1260
1261 ifidx = dhd_net2idx(dhd, net);
1262 if (ifidx == DHD_BAD_IF)
1263 return NULL;
1264
1265 ifp = dhd->iflist[ifidx];
1266 ASSERT(dhd && ifp);
1267
1268 if (dhd->pub.up) {
1269 /* Use the protocol to get dongle stats */
1270 dhd_prot_dstats(&dhd->pub);
1271 }
1272
1273 /* Copy dongle stats to net device stats */
1274 ifp->stats.rx_packets = dhd->pub.dstats.rx_packets;
1275 ifp->stats.tx_packets = dhd->pub.dstats.tx_packets;
1276 ifp->stats.rx_bytes = dhd->pub.dstats.rx_bytes;
1277 ifp->stats.tx_bytes = dhd->pub.dstats.tx_bytes;
1278 ifp->stats.rx_errors = dhd->pub.dstats.rx_errors;
1279 ifp->stats.tx_errors = dhd->pub.dstats.tx_errors;
1280 ifp->stats.rx_dropped = dhd->pub.dstats.rx_dropped;
1281 ifp->stats.tx_dropped = dhd->pub.dstats.tx_dropped;
1282 ifp->stats.multicast = dhd->pub.dstats.multicast;
1283
1284 return &ifp->stats;
1285 }
1286
1287 static int dhd_watchdog_thread(void *data)
1288 {
1289 dhd_info_t *dhd = (dhd_info_t *) data;
1290
1291 /* This thread doesn't need any user-level access,
1292 * so get rid of all our resources
1293 */
1294 #ifdef DHD_SCHED
1295 if (dhd_watchdog_prio > 0) {
1296 struct sched_param param;
1297 param.sched_priority = (dhd_watchdog_prio < MAX_RT_PRIO) ?
1298 dhd_watchdog_prio : (MAX_RT_PRIO - 1);
1299 setScheduler(current, SCHED_FIFO, &param);
1300 }
1301 #endif /* DHD_SCHED */
1302
1303 allow_signal(SIGTERM);
1304 /* Run until signal received */
1305 while (1) {
1306 if (kthread_should_stop())
1307 break;
1308 if (down_interruptible(&dhd->watchdog_sem) == 0) {
1309 if (dhd->pub.dongle_reset == false) {
1310 /* Call the bus module watchdog */
1311 dhd_bus_watchdog(&dhd->pub);
1312 }
1313 /* Count the tick for reference */
1314 dhd->pub.tickcnt++;
1315 } else
1316 break;
1317 }
1318 return 0;
1319 }
1320
1321 static void dhd_watchdog(unsigned long data)
1322 {
1323 dhd_info_t *dhd = (dhd_info_t *) data;
1324
1325 if (dhd->watchdog_tsk) {
1326 up(&dhd->watchdog_sem);
1327
1328 /* Reschedule the watchdog */
1329 if (dhd->wd_timer_valid) {
1330 mod_timer(&dhd->timer,
1331 jiffies + dhd_watchdog_ms * HZ / 1000);
1332 }
1333 return;
1334 }
1335
1336 /* Call the bus module watchdog */
1337 dhd_bus_watchdog(&dhd->pub);
1338
1339 /* Count the tick for reference */
1340 dhd->pub.tickcnt++;
1341
1342 /* Reschedule the watchdog */
1343 if (dhd->wd_timer_valid)
1344 mod_timer(&dhd->timer, jiffies + dhd_watchdog_ms * HZ / 1000);
1345 }
1346
1347 static int dhd_dpc_thread(void *data)
1348 {
1349 dhd_info_t *dhd = (dhd_info_t *) data;
1350
1351 /* This thread doesn't need any user-level access,
1352 * so get rid of all our resources
1353 */
1354 #ifdef DHD_SCHED
1355 if (dhd_dpc_prio > 0) {
1356 struct sched_param param;
1357 param.sched_priority =
1358 (dhd_dpc_prio <
1359 MAX_RT_PRIO) ? dhd_dpc_prio : (MAX_RT_PRIO - 1);
1360 setScheduler(current, SCHED_FIFO, &param);
1361 }
1362 #endif /* DHD_SCHED */
1363
1364 allow_signal(SIGTERM);
1365 /* Run until signal received */
1366 while (1) {
1367 if (kthread_should_stop())
1368 break;
1369 if (down_interruptible(&dhd->dpc_sem) == 0) {
1370 /* Call bus dpc unless it indicated down
1371 (then clean stop) */
1372 if (dhd->pub.busstate != DHD_BUS_DOWN) {
1373 if (dhd_bus_dpc(dhd->pub.bus)) {
1374 up(&dhd->dpc_sem);
1375 }
1376 } else {
1377 dhd_bus_stop(dhd->pub.bus, true);
1378 }
1379 } else
1380 break;
1381 }
1382 return 0;
1383 }
1384
1385 static void dhd_dpc(unsigned long data)
1386 {
1387 dhd_info_t *dhd;
1388
1389 dhd = (dhd_info_t *) data;
1390
1391 /* Call bus dpc unless it indicated down (then clean stop) */
1392 if (dhd->pub.busstate != DHD_BUS_DOWN) {
1393 if (dhd_bus_dpc(dhd->pub.bus))
1394 tasklet_schedule(&dhd->tasklet);
1395 } else {
1396 dhd_bus_stop(dhd->pub.bus, true);
1397 }
1398 }
1399
1400 void dhd_sched_dpc(dhd_pub_t *dhdp)
1401 {
1402 dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
1403
1404 if (dhd->dpc_tsk) {
1405 up(&dhd->dpc_sem);
1406 return;
1407 }
1408
1409 tasklet_schedule(&dhd->tasklet);
1410 }
1411
1412 #ifdef TOE
1413 /* Retrieve current toe component enables, which are kept
1414 as a bitmap in toe_ol iovar */
1415 static int dhd_toe_get(dhd_info_t *dhd, int ifidx, u32 *toe_ol)
1416 {
1417 wl_ioctl_t ioc;
1418 char buf[32];
1419 int ret;
1420
1421 memset(&ioc, 0, sizeof(ioc));
1422
1423 ioc.cmd = WLC_GET_VAR;
1424 ioc.buf = buf;
1425 ioc.len = (uint) sizeof(buf);
1426 ioc.set = false;
1427
1428 strcpy(buf, "toe_ol");
1429 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1430 if (ret < 0) {
1431 /* Check for older dongle image that doesn't support toe_ol */
1432 if (ret == -EIO) {
1433 DHD_ERROR(("%s: toe not supported by device\n",
1434 dhd_ifname(&dhd->pub, ifidx)));
1435 return -EOPNOTSUPP;
1436 }
1437
1438 DHD_INFO(("%s: could not get toe_ol: ret=%d\n",
1439 dhd_ifname(&dhd->pub, ifidx), ret));
1440 return ret;
1441 }
1442
1443 memcpy(toe_ol, buf, sizeof(u32));
1444 return 0;
1445 }
1446
1447 /* Set current toe component enables in toe_ol iovar,
1448 and set toe global enable iovar */
1449 static int dhd_toe_set(dhd_info_t *dhd, int ifidx, u32 toe_ol)
1450 {
1451 wl_ioctl_t ioc;
1452 char buf[32];
1453 int toe, ret;
1454
1455 memset(&ioc, 0, sizeof(ioc));
1456
1457 ioc.cmd = WLC_SET_VAR;
1458 ioc.buf = buf;
1459 ioc.len = (uint) sizeof(buf);
1460 ioc.set = true;
1461
1462 /* Set toe_ol as requested */
1463
1464 strcpy(buf, "toe_ol");
1465 memcpy(&buf[sizeof("toe_ol")], &toe_ol, sizeof(u32));
1466
1467 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1468 if (ret < 0) {
1469 DHD_ERROR(("%s: could not set toe_ol: ret=%d\n",
1470 dhd_ifname(&dhd->pub, ifidx), ret));
1471 return ret;
1472 }
1473
1474 /* Enable toe globally only if any components are enabled. */
1475
1476 toe = (toe_ol != 0);
1477
1478 strcpy(buf, "toe");
1479 memcpy(&buf[sizeof("toe")], &toe, sizeof(u32));
1480
1481 ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1482 if (ret < 0) {
1483 DHD_ERROR(("%s: could not set toe: ret=%d\n",
1484 dhd_ifname(&dhd->pub, ifidx), ret));
1485 return ret;
1486 }
1487
1488 return 0;
1489 }
1490 #endif /* TOE */
1491
1492 static void dhd_ethtool_get_drvinfo(struct net_device *net,
1493 struct ethtool_drvinfo *info)
1494 {
1495 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1496
1497 sprintf(info->driver, DRV_MODULE_NAME);
1498 sprintf(info->version, "%lu", dhd->pub.drv_version);
1499 sprintf(info->fw_version, "%s", wl_cfg80211_get_fwname());
1500 sprintf(info->bus_info, "%s", dev_name(&wl_cfg80211_get_sdio_func()->dev));
1501 }
1502
1503 struct ethtool_ops dhd_ethtool_ops = {
1504 .get_drvinfo = dhd_ethtool_get_drvinfo
1505 };
1506
1507 static int dhd_ethtool(dhd_info_t *dhd, void *uaddr)
1508 {
1509 struct ethtool_drvinfo info;
1510 char drvname[sizeof(info.driver)];
1511 u32 cmd;
1512 #ifdef TOE
1513 struct ethtool_value edata;
1514 u32 toe_cmpnt, csum_dir;
1515 int ret;
1516 #endif
1517
1518 DHD_TRACE(("%s: Enter\n", __func__));
1519
1520 /* all ethtool calls start with a cmd word */
1521 if (copy_from_user(&cmd, uaddr, sizeof(u32)))
1522 return -EFAULT;
1523
1524 switch (cmd) {
1525 case ETHTOOL_GDRVINFO:
1526 /* Copy out any request driver name */
1527 if (copy_from_user(&info, uaddr, sizeof(info)))
1528 return -EFAULT;
1529 strncpy(drvname, info.driver, sizeof(info.driver));
1530 drvname[sizeof(info.driver) - 1] = '\0';
1531
1532 /* clear struct for return */
1533 memset(&info, 0, sizeof(info));
1534 info.cmd = cmd;
1535
1536 /* if dhd requested, identify ourselves */
1537 if (strcmp(drvname, "?dhd") == 0) {
1538 sprintf(info.driver, "dhd");
1539 strcpy(info.version, EPI_VERSION_STR);
1540 }
1541
1542 /* otherwise, require dongle to be up */
1543 else if (!dhd->pub.up) {
1544 DHD_ERROR(("%s: dongle is not up\n", __func__));
1545 return -ENODEV;
1546 }
1547
1548 /* finally, report dongle driver type */
1549 else if (dhd->pub.iswl)
1550 sprintf(info.driver, "wl");
1551 else
1552 sprintf(info.driver, "xx");
1553
1554 sprintf(info.version, "%lu", dhd->pub.drv_version);
1555 if (copy_to_user(uaddr, &info, sizeof(info)))
1556 return -EFAULT;
1557 DHD_CTL(("%s: given %*s, returning %s\n", __func__,
1558 (int)sizeof(drvname), drvname, info.driver));
1559 break;
1560
1561 #ifdef TOE
1562 /* Get toe offload components from dongle */
1563 case ETHTOOL_GRXCSUM:
1564 case ETHTOOL_GTXCSUM:
1565 ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
1566 if (ret < 0)
1567 return ret;
1568
1569 csum_dir =
1570 (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
1571
1572 edata.cmd = cmd;
1573 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
1574
1575 if (copy_to_user(uaddr, &edata, sizeof(edata)))
1576 return -EFAULT;
1577 break;
1578
1579 /* Set toe offload components in dongle */
1580 case ETHTOOL_SRXCSUM:
1581 case ETHTOOL_STXCSUM:
1582 if (copy_from_user(&edata, uaddr, sizeof(edata)))
1583 return -EFAULT;
1584
1585 /* Read the current settings, update and write back */
1586 ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
1587 if (ret < 0)
1588 return ret;
1589
1590 csum_dir =
1591 (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
1592
1593 if (edata.data != 0)
1594 toe_cmpnt |= csum_dir;
1595 else
1596 toe_cmpnt &= ~csum_dir;
1597
1598 ret = dhd_toe_set(dhd, 0, toe_cmpnt);
1599 if (ret < 0)
1600 return ret;
1601
1602 /* If setting TX checksum mode, tell Linux the new mode */
1603 if (cmd == ETHTOOL_STXCSUM) {
1604 if (edata.data)
1605 dhd->iflist[0]->net->features |=
1606 NETIF_F_IP_CSUM;
1607 else
1608 dhd->iflist[0]->net->features &=
1609 ~NETIF_F_IP_CSUM;
1610 }
1611
1612 break;
1613 #endif /* TOE */
1614
1615 default:
1616 return -EOPNOTSUPP;
1617 }
1618
1619 return 0;
1620 }
1621
1622 static s16 linuxbcmerrormap[] = { 0, /* 0 */
1623 -EINVAL, /* BCME_ERROR */
1624 -EINVAL, /* BCME_BADARG */
1625 -EINVAL, /* BCME_BADOPTION */
1626 -EINVAL, /* BCME_NOTUP */
1627 -EINVAL, /* BCME_NOTDOWN */
1628 -EINVAL, /* BCME_NOTAP */
1629 -EINVAL, /* BCME_NOTSTA */
1630 -EINVAL, /* BCME_BADKEYIDX */
1631 -EINVAL, /* BCME_RADIOOFF */
1632 -EINVAL, /* BCME_NOTBANDLOCKED */
1633 -EINVAL, /* BCME_NOCLK */
1634 -EINVAL, /* BCME_BADRATESET */
1635 -EINVAL, /* BCME_BADBAND */
1636 -E2BIG, /* BCME_BUFTOOSHORT */
1637 -E2BIG, /* BCME_BUFTOOLONG */
1638 -EBUSY, /* BCME_BUSY */
1639 -EINVAL, /* BCME_NOTASSOCIATED */
1640 -EINVAL, /* BCME_BADSSIDLEN */
1641 -EINVAL, /* BCME_OUTOFRANGECHAN */
1642 -EINVAL, /* BCME_BADCHAN */
1643 -EFAULT, /* BCME_BADADDR */
1644 -ENOMEM, /* BCME_NORESOURCE */
1645 -EOPNOTSUPP, /* BCME_UNSUPPORTED */
1646 -EMSGSIZE, /* BCME_BADLENGTH */
1647 -EINVAL, /* BCME_NOTREADY */
1648 -EPERM, /* BCME_NOTPERMITTED */
1649 -ENOMEM, /* BCME_NOMEM */
1650 -EINVAL, /* BCME_ASSOCIATED */
1651 -ERANGE, /* BCME_RANGE */
1652 -EINVAL, /* BCME_NOTFOUND */
1653 -EINVAL, /* BCME_WME_NOT_ENABLED */
1654 -EINVAL, /* BCME_TSPEC_NOTFOUND */
1655 -EINVAL, /* BCME_ACM_NOTSUPPORTED */
1656 -EINVAL, /* BCME_NOT_WME_ASSOCIATION */
1657 -EIO, /* BCME_SDIO_ERROR */
1658 -ENODEV, /* BCME_DONGLE_DOWN */
1659 -EINVAL, /* BCME_VERSION */
1660 -EIO, /* BCME_TXFAIL */
1661 -EIO, /* BCME_RXFAIL */
1662 -EINVAL, /* BCME_NODEVICE */
1663 -EINVAL, /* BCME_NMODE_DISABLED */
1664 -ENODATA, /* BCME_NONRESIDENT */
1665 };
1666
1667 static int dhd_ioctl_entry(struct net_device *net, struct ifreq *ifr, int cmd)
1668 {
1669 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1670 dhd_ioctl_t ioc;
1671 int bcmerror = 0;
1672 int buflen = 0;
1673 void *buf = NULL;
1674 uint driver = 0;
1675 int ifidx;
1676 bool is_set_key_cmd;
1677
1678 ifidx = dhd_net2idx(dhd, net);
1679 DHD_TRACE(("%s: ifidx %d, cmd 0x%04x\n", __func__, ifidx, cmd));
1680
1681 if (ifidx == DHD_BAD_IF)
1682 return -1;
1683
1684 #if defined(CONFIG_WIRELESS_EXT)
1685 /* linux wireless extensions */
1686 if ((cmd >= SIOCIWFIRST) && (cmd <= SIOCIWLAST)) {
1687 /* may recurse, do NOT lock */
1688 return wl_iw_ioctl(net, ifr, cmd);
1689 }
1690 #endif /* defined(CONFIG_WIRELESS_EXT) */
1691
1692 if (cmd == SIOCETHTOOL)
1693 return dhd_ethtool(dhd, (void *)ifr->ifr_data);
1694
1695 if (cmd != SIOCDEVPRIVATE)
1696 return -EOPNOTSUPP;
1697
1698 memset(&ioc, 0, sizeof(ioc));
1699
1700 /* Copy the ioc control structure part of ioctl request */
1701 if (copy_from_user(&ioc, ifr->ifr_data, sizeof(wl_ioctl_t))) {
1702 bcmerror = -BCME_BADADDR;
1703 goto done;
1704 }
1705
1706 /* Copy out any buffer passed */
1707 if (ioc.buf) {
1708 buflen = min_t(int, ioc.len, DHD_IOCTL_MAXLEN);
1709 /* optimization for direct ioctl calls from kernel */
1710 /*
1711 if (segment_eq(get_fs(), KERNEL_DS)) {
1712 buf = ioc.buf;
1713 } else {
1714 */
1715 {
1716 buf = kmalloc(buflen, GFP_ATOMIC);
1717 if (!buf) {
1718 bcmerror = -BCME_NOMEM;
1719 goto done;
1720 }
1721 if (copy_from_user(buf, ioc.buf, buflen)) {
1722 bcmerror = -BCME_BADADDR;
1723 goto done;
1724 }
1725 }
1726 }
1727
1728 /* To differentiate between wl and dhd read 4 more byes */
1729 if ((copy_from_user(&driver, (char *)ifr->ifr_data + sizeof(wl_ioctl_t),
1730 sizeof(uint)) != 0)) {
1731 bcmerror = -BCME_BADADDR;
1732 goto done;
1733 }
1734
1735 if (!capable(CAP_NET_ADMIN)) {
1736 bcmerror = -BCME_EPERM;
1737 goto done;
1738 }
1739
1740 /* check for local dhd ioctl and handle it */
1741 if (driver == DHD_IOCTL_MAGIC) {
1742 bcmerror = dhd_ioctl((void *)&dhd->pub, &ioc, buf, buflen);
1743 if (bcmerror)
1744 dhd->pub.bcmerror = bcmerror;
1745 goto done;
1746 }
1747
1748 /* send to dongle (must be up, and wl) */
1749 if ((dhd->pub.busstate != DHD_BUS_DATA)) {
1750 DHD_ERROR(("%s DONGLE_DOWN,__func__\n", __func__));
1751 bcmerror = BCME_DONGLE_DOWN;
1752 goto done;
1753 }
1754
1755 if (!dhd->pub.iswl) {
1756 bcmerror = BCME_DONGLE_DOWN;
1757 goto done;
1758 }
1759
1760 /* Intercept WLC_SET_KEY IOCTL - serialize M4 send and set key IOCTL to
1761 * prevent M4 encryption.
1762 */
1763 is_set_key_cmd = ((ioc.cmd == WLC_SET_KEY) ||
1764 ((ioc.cmd == WLC_SET_VAR) &&
1765 !(strncmp("wsec_key", ioc.buf, 9))) ||
1766 ((ioc.cmd == WLC_SET_VAR) &&
1767 !(strncmp("bsscfg:wsec_key", ioc.buf, 15))));
1768 if (is_set_key_cmd)
1769 dhd_wait_pend8021x(net);
1770
1771 bcmerror =
1772 dhd_prot_ioctl(&dhd->pub, ifidx, (wl_ioctl_t *)&ioc, buf, buflen);
1773
1774 done:
1775 if (!bcmerror && buf && ioc.buf) {
1776 if (copy_to_user(ioc.buf, buf, buflen))
1777 bcmerror = -EFAULT;
1778 }
1779
1780 kfree(buf);
1781
1782 if (bcmerror > 0)
1783 bcmerror = 0;
1784 else if (bcmerror < BCME_LAST)
1785 bcmerror = BCME_ERROR;
1786
1787 return linuxbcmerrormap[-bcmerror];
1788 }
1789
1790 static int dhd_stop(struct net_device *net)
1791 {
1792 #if !defined(IGNORE_ETH0_DOWN)
1793 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1794
1795 DHD_TRACE(("%s: Enter\n", __func__));
1796 if (IS_CFG80211_FAVORITE()) {
1797 wl_cfg80211_down();
1798 }
1799 if (dhd->pub.up == 0)
1800 return 0;
1801
1802 /* Set state and stop OS transmissions */
1803 dhd->pub.up = 0;
1804 netif_stop_queue(net);
1805 #else
1806 DHD_ERROR(("BYPASS %s:due to BRCM compilation : under investigation\n",
1807 __func__));
1808 #endif /* !defined(IGNORE_ETH0_DOWN) */
1809
1810 return 0;
1811 }
1812
1813 static int dhd_open(struct net_device *net)
1814 {
1815 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1816 #ifdef TOE
1817 u32 toe_ol;
1818 #endif
1819 int ifidx = dhd_net2idx(dhd, net);
1820 s32 ret = 0;
1821
1822 DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));
1823
1824 if (ifidx == 0) { /* do it only for primary eth0 */
1825
1826 /* try to bring up bus */
1827 ret = dhd_bus_start(&dhd->pub);
1828 if (ret != 0) {
1829 DHD_ERROR(("%s: failed with code %d\n", __func__, ret));
1830 return -1;
1831 }
1832 atomic_set(&dhd->pend_8021x_cnt, 0);
1833
1834 memcpy(net->dev_addr, dhd->pub.mac, ETH_ALEN);
1835
1836 #ifdef TOE
1837 /* Get current TOE mode from dongle */
1838 if (dhd_toe_get(dhd, ifidx, &toe_ol) >= 0
1839 && (toe_ol & TOE_TX_CSUM_OL) != 0)
1840 dhd->iflist[ifidx]->net->features |= NETIF_F_IP_CSUM;
1841 else
1842 dhd->iflist[ifidx]->net->features &= ~NETIF_F_IP_CSUM;
1843 #endif
1844 }
1845 /* Allow transmit calls */
1846 netif_start_queue(net);
1847 dhd->pub.up = 1;
1848 if (IS_CFG80211_FAVORITE()) {
1849 if (unlikely(wl_cfg80211_up())) {
1850 DHD_ERROR(("%s: failed to bring up cfg80211\n",
1851 __func__));
1852 return -1;
1853 }
1854 }
1855
1856 return ret;
1857 }
1858
1859 int
1860 dhd_add_if(dhd_info_t *dhd, int ifidx, void *handle, char *name,
1861 u8 *mac_addr, u32 flags, u8 bssidx)
1862 {
1863 dhd_if_t *ifp;
1864
1865 DHD_TRACE(("%s: idx %d, handle->%p\n", __func__, ifidx, handle));
1866
1867 ASSERT(dhd && (ifidx < DHD_MAX_IFS));
1868
1869 ifp = dhd->iflist[ifidx];
1870 if (!ifp && !(ifp = kmalloc(sizeof(dhd_if_t), GFP_ATOMIC))) {
1871 DHD_ERROR(("%s: OOM - dhd_if_t\n", __func__));
1872 return -ENOMEM;
1873 }
1874
1875 memset(ifp, 0, sizeof(dhd_if_t));
1876 ifp->info = dhd;
1877 dhd->iflist[ifidx] = ifp;
1878 strlcpy(ifp->name, name, IFNAMSIZ);
1879 if (mac_addr != NULL)
1880 memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN);
1881
1882 if (handle == NULL) {
1883 ifp->state = WLC_E_IF_ADD;
1884 ifp->idx = ifidx;
1885 ASSERT(dhd->sysioc_tsk);
1886 up(&dhd->sysioc_sem);
1887 } else
1888 ifp->net = (struct net_device *)handle;
1889
1890 return 0;
1891 }
1892
1893 void dhd_del_if(dhd_info_t *dhd, int ifidx)
1894 {
1895 dhd_if_t *ifp;
1896
1897 DHD_TRACE(("%s: idx %d\n", __func__, ifidx));
1898
1899 ASSERT(dhd && ifidx && (ifidx < DHD_MAX_IFS));
1900 ifp = dhd->iflist[ifidx];
1901 if (!ifp) {
1902 DHD_ERROR(("%s: Null interface\n", __func__));
1903 return;
1904 }
1905
1906 ifp->state = WLC_E_IF_DEL;
1907 ifp->idx = ifidx;
1908 ASSERT(dhd->sysioc_tsk);
1909 up(&dhd->sysioc_sem);
1910 }
1911
1912 dhd_pub_t *dhd_attach(struct dhd_bus *bus, uint bus_hdrlen)
1913 {
1914 dhd_info_t *dhd = NULL;
1915 struct net_device *net;
1916
1917 DHD_TRACE(("%s: Enter\n", __func__));
1918 /* updates firmware nvram path if it was provided as module
1919 paramters */
1920 if ((firmware_path != NULL) && (firmware_path[0] != '\0'))
1921 strcpy(fw_path, firmware_path);
1922 if ((nvram_path != NULL) && (nvram_path[0] != '\0'))
1923 strcpy(nv_path, nvram_path);
1924
1925 /* Allocate etherdev, including space for private structure */
1926 net = alloc_etherdev(sizeof(dhd));
1927 if (!net) {
1928 DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
1929 goto fail;
1930 }
1931
1932 /* Allocate primary dhd_info */
1933 dhd = kzalloc(sizeof(dhd_info_t), GFP_ATOMIC);
1934 if (!dhd) {
1935 DHD_ERROR(("%s: OOM - alloc dhd_info\n", __func__));
1936 goto fail;
1937 }
1938
1939 /*
1940 * Save the dhd_info into the priv
1941 */
1942 memcpy(netdev_priv(net), &dhd, sizeof(dhd));
1943
1944 /* Set network interface name if it was provided as module parameter */
1945 if (iface_name[0]) {
1946 int len;
1947 char ch;
1948 strncpy(net->name, iface_name, IFNAMSIZ);
1949 net->name[IFNAMSIZ - 1] = 0;
1950 len = strlen(net->name);
1951 ch = net->name[len - 1];
1952 if ((ch > '9' || ch < '0') && (len < IFNAMSIZ - 2))
1953 strcat(net->name, "%d");
1954 }
1955
1956 if (dhd_add_if(dhd, 0, (void *)net, net->name, NULL, 0, 0) ==
1957 DHD_BAD_IF)
1958 goto fail;
1959
1960 net->netdev_ops = NULL;
1961 sema_init(&dhd->proto_sem, 1);
1962 /* Initialize other structure content */
1963 init_waitqueue_head(&dhd->ioctl_resp_wait);
1964 init_waitqueue_head(&dhd->ctrl_wait);
1965
1966 /* Initialize the spinlocks */
1967 spin_lock_init(&dhd->sdlock);
1968 spin_lock_init(&dhd->txqlock);
1969
1970 /* Link to info module */
1971 dhd->pub.info = dhd;
1972
1973 /* Link to bus module */
1974 dhd->pub.bus = bus;
1975 dhd->pub.hdrlen = bus_hdrlen;
1976
1977 /* Attach and link in the protocol */
1978 if (dhd_prot_attach(&dhd->pub) != 0) {
1979 DHD_ERROR(("dhd_prot_attach failed\n"));
1980 goto fail;
1981 }
1982 #if defined(CONFIG_WIRELESS_EXT)
1983 /* Attach and link in the iw */
1984 if (wl_iw_attach(net, (void *)&dhd->pub) != 0) {
1985 DHD_ERROR(("wl_iw_attach failed\n"));
1986 goto fail;
1987 }
1988 #endif /* defined(CONFIG_WIRELESS_EXT) */
1989
1990 /* Attach and link in the cfg80211 */
1991 if (IS_CFG80211_FAVORITE()) {
1992 if (unlikely(wl_cfg80211_attach(net, &dhd->pub))) {
1993 DHD_ERROR(("wl_cfg80211_attach failed\n"));
1994 goto fail;
1995 }
1996 if (!NO_FW_REQ()) {
1997 strcpy(fw_path, wl_cfg80211_get_fwname());
1998 strcpy(nv_path, wl_cfg80211_get_nvramname());
1999 }
2000 wl_cfg80211_dbg_level(DBG_CFG80211_GET());
2001 }
2002
2003 /* Set up the watchdog timer */
2004 init_timer(&dhd->timer);
2005 dhd->timer.data = (unsigned long) dhd;
2006 dhd->timer.function = dhd_watchdog;
2007
2008 /* Initialize thread based operation and lock */
2009 sema_init(&dhd->sdsem, 1);
2010 if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0))
2011 dhd->threads_only = true;
2012 else
2013 dhd->threads_only = false;
2014
2015 if (dhd_dpc_prio >= 0) {
2016 /* Initialize watchdog thread */
2017 sema_init(&dhd->watchdog_sem, 0);
2018 dhd->watchdog_tsk = kthread_run(dhd_watchdog_thread, dhd,
2019 "dhd_watchdog");
2020 if (IS_ERR(dhd->watchdog_tsk)) {
2021 printk(KERN_WARNING
2022 "dhd_watchdog thread failed to start\n");
2023 dhd->watchdog_tsk = NULL;
2024 }
2025 } else {
2026 dhd->watchdog_tsk = NULL;
2027 }
2028
2029 /* Set up the bottom half handler */
2030 if (dhd_dpc_prio >= 0) {
2031 /* Initialize DPC thread */
2032 sema_init(&dhd->dpc_sem, 0);
2033 dhd->dpc_tsk = kthread_run(dhd_dpc_thread, dhd, "dhd_dpc");
2034 if (IS_ERR(dhd->dpc_tsk)) {
2035 printk(KERN_WARNING
2036 "dhd_dpc thread failed to start\n");
2037 dhd->dpc_tsk = NULL;
2038 }
2039 } else {
2040 tasklet_init(&dhd->tasklet, dhd_dpc, (unsigned long) dhd);
2041 dhd->dpc_tsk = NULL;
2042 }
2043
2044 if (dhd_sysioc) {
2045 sema_init(&dhd->sysioc_sem, 0);
2046 dhd->sysioc_tsk = kthread_run(_dhd_sysioc_thread, dhd,
2047 "_dhd_sysioc");
2048 if (IS_ERR(dhd->sysioc_tsk)) {
2049 printk(KERN_WARNING
2050 "_dhd_sysioc thread failed to start\n");
2051 dhd->sysioc_tsk = NULL;
2052 }
2053 } else
2054 dhd->sysioc_tsk = NULL;
2055
2056 /*
2057 * Save the dhd_info into the priv
2058 */
2059 memcpy(netdev_priv(net), &dhd, sizeof(dhd));
2060
2061 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2062 g_bus = bus;
2063 #endif
2064 #if defined(CONFIG_PM_SLEEP)
2065 register_pm_notifier(&dhd_sleep_pm_notifier);
2066 #endif /* defined(CONFIG_PM_SLEEP) */
2067 /* && defined(DHD_GPL) */
2068 /* Init lock suspend to prevent kernel going to suspend */
2069 #ifdef CONFIG_HAS_EARLYSUSPEND
2070 dhd->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 20;
2071 dhd->early_suspend.suspend = dhd_early_suspend;
2072 dhd->early_suspend.resume = dhd_late_resume;
2073 register_early_suspend(&dhd->early_suspend);
2074 #endif
2075
2076 return &dhd->pub;
2077
2078 fail:
2079 if (net)
2080 free_netdev(net);
2081 if (dhd)
2082 dhd_detach(&dhd->pub);
2083
2084 return NULL;
2085 }
2086
2087 int dhd_bus_start(dhd_pub_t *dhdp)
2088 {
2089 int ret = -1;
2090 dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
2091 #ifdef EMBEDDED_PLATFORM
2092 char iovbuf[WL_EVENTING_MASK_LEN + 12]; /* Room for "event_msgs" +
2093 '\0' + bitvec */
2094 #endif /* EMBEDDED_PLATFORM */
2095
2096 ASSERT(dhd);
2097
2098 DHD_TRACE(("%s:\n", __func__));
2099
2100 /* try to download image and nvram to the dongle */
2101 if (dhd->pub.busstate == DHD_BUS_DOWN) {
2102 if (!(dhd_bus_download_firmware(dhd->pub.bus,
2103 fw_path, nv_path))) {
2104 DHD_ERROR(("%s: dhdsdio_probe_download failed. "
2105 "firmware = %s nvram = %s\n",
2106 __func__, fw_path, nv_path));
2107 return -1;
2108 }
2109 }
2110
2111 /* Start the watchdog timer */
2112 dhd->pub.tickcnt = 0;
2113 dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
2114
2115 /* Bring up the bus */
2116 ret = dhd_bus_init(&dhd->pub, true);
2117 if (ret != 0) {
2118 DHD_ERROR(("%s, dhd_bus_init failed %d\n", __func__, ret));
2119 return ret;
2120 }
2121 #if defined(OOB_INTR_ONLY)
2122 /* Host registration for OOB interrupt */
2123 if (bcmsdh_register_oob_intr(dhdp)) {
2124 del_timer_sync(&dhd->timer);
2125 dhd->wd_timer_valid = false;
2126 DHD_ERROR(("%s Host failed to resgister for OOB\n", __func__));
2127 return -ENODEV;
2128 }
2129
2130 /* Enable oob at firmware */
2131 dhd_enable_oob_intr(dhd->pub.bus, true);
2132 #endif /* defined(OOB_INTR_ONLY) */
2133
2134 /* If bus is not ready, can't come up */
2135 if (dhd->pub.busstate != DHD_BUS_DATA) {
2136 del_timer_sync(&dhd->timer);
2137 dhd->wd_timer_valid = false;
2138 DHD_ERROR(("%s failed bus is not ready\n", __func__));
2139 return -ENODEV;
2140 }
2141 #ifdef EMBEDDED_PLATFORM
2142 bcm_mkiovar("event_msgs", dhdp->eventmask, WL_EVENTING_MASK_LEN, iovbuf,
2143 sizeof(iovbuf));
2144 dhdcdc_query_ioctl(dhdp, 0, WLC_GET_VAR, iovbuf, sizeof(iovbuf));
2145 memcpy(dhdp->eventmask, iovbuf, WL_EVENTING_MASK_LEN);
2146
2147 setbit(dhdp->eventmask, WLC_E_SET_SSID);
2148 setbit(dhdp->eventmask, WLC_E_PRUNE);
2149 setbit(dhdp->eventmask, WLC_E_AUTH);
2150 setbit(dhdp->eventmask, WLC_E_REASSOC);
2151 setbit(dhdp->eventmask, WLC_E_REASSOC_IND);
2152 setbit(dhdp->eventmask, WLC_E_DEAUTH_IND);
2153 setbit(dhdp->eventmask, WLC_E_DISASSOC_IND);
2154 setbit(dhdp->eventmask, WLC_E_DISASSOC);
2155 setbit(dhdp->eventmask, WLC_E_JOIN);
2156 setbit(dhdp->eventmask, WLC_E_ASSOC_IND);
2157 setbit(dhdp->eventmask, WLC_E_PSK_SUP);
2158 setbit(dhdp->eventmask, WLC_E_LINK);
2159 setbit(dhdp->eventmask, WLC_E_NDIS_LINK);
2160 setbit(dhdp->eventmask, WLC_E_MIC_ERROR);
2161 setbit(dhdp->eventmask, WLC_E_PMKID_CACHE);
2162 setbit(dhdp->eventmask, WLC_E_TXFAIL);
2163 setbit(dhdp->eventmask, WLC_E_JOIN_START);
2164 setbit(dhdp->eventmask, WLC_E_SCAN_COMPLETE);
2165 #ifdef PNO_SUPPORT
2166 setbit(dhdp->eventmask, WLC_E_PFN_NET_FOUND);
2167 #endif /* PNO_SUPPORT */
2168
2169 /* enable dongle roaming event */
2170
2171 dhdp->pktfilter_count = 1;
2172 /* Setup filter to allow only unicast */
2173 dhdp->pktfilter[0] = "100 0 0 0 0x01 0x00";
2174 #endif /* EMBEDDED_PLATFORM */
2175
2176 /* Bus is ready, do any protocol initialization */
2177 ret = dhd_prot_init(&dhd->pub);
2178 if (ret < 0)
2179 return ret;
2180
2181 return 0;
2182 }
2183
2184 int
2185 dhd_iovar(dhd_pub_t *pub, int ifidx, char *name, char *cmd_buf, uint cmd_len,
2186 int set)
2187 {
2188 char buf[strlen(name) + 1 + cmd_len];
2189 int len = sizeof(buf);
2190 wl_ioctl_t ioc;
2191 int ret;
2192
2193 len = bcm_mkiovar(name, cmd_buf, cmd_len, buf, len);
2194
2195 memset(&ioc, 0, sizeof(ioc));
2196
2197 ioc.cmd = set ? WLC_SET_VAR : WLC_GET_VAR;
2198 ioc.buf = buf;
2199 ioc.len = len;
2200 ioc.set = set;
2201
2202 ret = dhd_prot_ioctl(pub, ifidx, &ioc, ioc.buf, ioc.len);
2203 if (!set && ret >= 0)
2204 memcpy(cmd_buf, buf, cmd_len);
2205
2206 return ret;
2207 }
2208
2209 static struct net_device_ops dhd_ops_pri = {
2210 .ndo_open = dhd_open,
2211 .ndo_stop = dhd_stop,
2212 .ndo_get_stats = dhd_get_stats,
2213 .ndo_do_ioctl = dhd_ioctl_entry,
2214 .ndo_start_xmit = dhd_start_xmit,
2215 .ndo_set_mac_address = dhd_set_mac_address,
2216 .ndo_set_multicast_list = dhd_set_multicast_list
2217 };
2218
2219 int dhd_net_attach(dhd_pub_t *dhdp, int ifidx)
2220 {
2221 dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
2222 struct net_device *net;
2223 u8 temp_addr[ETH_ALEN] = {
2224 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33};
2225
2226 DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));
2227
2228 ASSERT(dhd && dhd->iflist[ifidx]);
2229
2230 net = dhd->iflist[ifidx]->net;
2231 ASSERT(net);
2232
2233 ASSERT(!net->netdev_ops);
2234 net->netdev_ops = &dhd_ops_pri;
2235
2236 /*
2237 * We have to use the primary MAC for virtual interfaces
2238 */
2239 if (ifidx != 0) {
2240 /* for virtual interfaces use the primary MAC */
2241 memcpy(temp_addr, dhd->pub.mac, ETH_ALEN);
2242
2243 }
2244
2245 if (ifidx == 1) {
2246 DHD_TRACE(("%s ACCESS POINT MAC: \n", __func__));
2247 /* ACCESSPOINT INTERFACE CASE */
2248 temp_addr[0] |= 0X02; /* set bit 2 ,
2249 - Locally Administered address */
2250
2251 }
2252 net->hard_header_len = ETH_HLEN + dhd->pub.hdrlen;
2253 net->ethtool_ops = &dhd_ethtool_ops;
2254
2255 #if defined(CONFIG_WIRELESS_EXT)
2256 if (!IS_CFG80211_FAVORITE()) {
2257 #if WIRELESS_EXT < 19
2258 net->get_wireless_stats = dhd_get_wireless_stats;
2259 #endif /* WIRELESS_EXT < 19 */
2260 #if WIRELESS_EXT > 12
2261 net->wireless_handlers =
2262 (struct iw_handler_def *)&wl_iw_handler_def;
2263 #endif /* WIRELESS_EXT > 12 */
2264 }
2265 #endif /* defined(CONFIG_WIRELESS_EXT) */
2266
2267 dhd->pub.rxsz = net->mtu + net->hard_header_len + dhd->pub.hdrlen;
2268
2269 memcpy(net->dev_addr, temp_addr, ETH_ALEN);
2270
2271 if (register_netdev(net) != 0) {
2272 DHD_ERROR(("%s: couldn't register the net device\n",
2273 __func__));
2274 goto fail;
2275 }
2276
2277 DHD_INFO(("%s: Broadcom Dongle Host Driver\n", net->name));
2278
2279 return 0;
2280
2281 fail:
2282 net->netdev_ops = NULL;
2283 return BCME_ERROR;
2284 }
2285
2286 void dhd_bus_detach(dhd_pub_t *dhdp)
2287 {
2288 dhd_info_t *dhd;
2289
2290 DHD_TRACE(("%s: Enter\n", __func__));
2291
2292 if (dhdp) {
2293 dhd = (dhd_info_t *) dhdp->info;
2294 if (dhd) {
2295 /* Stop the protocol module */
2296 dhd_prot_stop(&dhd->pub);
2297
2298 /* Stop the bus module */
2299 dhd_bus_stop(dhd->pub.bus, true);
2300 #if defined(OOB_INTR_ONLY)
2301 bcmsdh_unregister_oob_intr();
2302 #endif /* defined(OOB_INTR_ONLY) */
2303
2304 /* Clear the watchdog timer */
2305 del_timer_sync(&dhd->timer);
2306 dhd->wd_timer_valid = false;
2307 }
2308 }
2309 }
2310
2311 void dhd_detach(dhd_pub_t *dhdp)
2312 {
2313 dhd_info_t *dhd;
2314
2315 DHD_TRACE(("%s: Enter\n", __func__));
2316
2317 if (dhdp) {
2318 dhd = (dhd_info_t *) dhdp->info;
2319 if (dhd) {
2320 dhd_if_t *ifp;
2321 int i;
2322
2323 #if defined(CONFIG_HAS_EARLYSUSPEND)
2324 if (dhd->early_suspend.suspend)
2325 unregister_early_suspend(&dhd->early_suspend);
2326 #endif /* defined(CONFIG_HAS_EARLYSUSPEND) */
2327
2328 for (i = 1; i < DHD_MAX_IFS; i++)
2329 if (dhd->iflist[i])
2330 dhd_del_if(dhd, i);
2331
2332 ifp = dhd->iflist[0];
2333 ASSERT(ifp);
2334 if (ifp->net->netdev_ops == &dhd_ops_pri) {
2335 dhd_stop(ifp->net);
2336 unregister_netdev(ifp->net);
2337 }
2338
2339 if (dhd->watchdog_tsk) {
2340 send_sig(SIGTERM, dhd->watchdog_tsk, 1);
2341 kthread_stop(dhd->watchdog_tsk);
2342 dhd->watchdog_tsk = NULL;
2343 }
2344
2345 if (dhd->dpc_tsk) {
2346 send_sig(SIGTERM, dhd->dpc_tsk, 1);
2347 kthread_stop(dhd->dpc_tsk);
2348 dhd->dpc_tsk = NULL;
2349 } else
2350 tasklet_kill(&dhd->tasklet);
2351
2352 if (dhd->sysioc_tsk) {
2353 send_sig(SIGTERM, dhd->sysioc_tsk, 1);
2354 kthread_stop(dhd->sysioc_tsk);
2355 dhd->sysioc_tsk = NULL;
2356 }
2357
2358 dhd_bus_detach(dhdp);
2359
2360 if (dhdp->prot)
2361 dhd_prot_detach(dhdp);
2362
2363 #if defined(CONFIG_WIRELESS_EXT)
2364 wl_iw_detach();
2365 #endif /* (CONFIG_WIRELESS_EXT) */
2366
2367 if (IS_CFG80211_FAVORITE())
2368 wl_cfg80211_detach();
2369
2370 #if defined(CONFIG_PM_SLEEP)
2371 unregister_pm_notifier(&dhd_sleep_pm_notifier);
2372 #endif /* defined(CONFIG_PM_SLEEP) */
2373 /* && defined(DHD_GPL) */
2374 free_netdev(ifp->net);
2375 kfree(ifp);
2376 kfree(dhd);
2377 }
2378 }
2379 }
2380
2381 static void __exit dhd_module_cleanup(void)
2382 {
2383 DHD_TRACE(("%s: Enter\n", __func__));
2384
2385 dhd_bus_unregister();
2386 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2387 wifi_del_dev();
2388 #endif
2389 /* Call customer gpio to turn off power with WL_REG_ON signal */
2390 dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
2391 }
2392
2393 static int __init dhd_module_init(void)
2394 {
2395 int error;
2396
2397 DHD_TRACE(("%s: Enter\n", __func__));
2398
2399 /* Sanity check on the module parameters */
2400 do {
2401 /* Both watchdog and DPC as tasklets are ok */
2402 if ((dhd_watchdog_prio < 0) && (dhd_dpc_prio < 0))
2403 break;
2404
2405 /* If both watchdog and DPC are threads, TX must be deferred */
2406 if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0)
2407 && dhd_deferred_tx)
2408 break;
2409
2410 DHD_ERROR(("Invalid module parameters.\n"));
2411 return -EINVAL;
2412 } while (0);
2413 /* Call customer gpio to turn on power with WL_REG_ON signal */
2414 dhd_customer_gpio_wlan_ctrl(WLAN_POWER_ON);
2415
2416 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2417 sema_init(&wifi_control_sem, 0);
2418
2419 error = wifi_add_dev();
2420 if (error) {
2421 DHD_ERROR(("%s: platform_driver_register failed\n", __func__));
2422 goto failed;
2423 }
2424
2425 /* Waiting callback after platform_driver_register is done or
2426 exit with error */
2427 if (down_timeout(&wifi_control_sem, msecs_to_jiffies(1000)) != 0) {
2428 printk(KERN_ERR "%s: platform_driver_register timeout\n",
2429 __func__);
2430 /* remove device */
2431 wifi_del_dev();
2432 goto failed;
2433 }
2434 #endif /* #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC) */
2435
2436 error = dhd_bus_register();
2437
2438 if (error) {
2439 DHD_ERROR(("%s: sdio_register_driver failed\n", __func__));
2440 goto failed;
2441 }
2442 return error;
2443
2444 failed:
2445 /* turn off power and exit */
2446 dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
2447 return -EINVAL;
2448 }
2449
2450 module_init(dhd_module_init);
2451 module_exit(dhd_module_cleanup);
2452
2453 /*
2454 * OS specific functions required to implement DHD driver in OS independent way
2455 */
2456 int dhd_os_proto_block(dhd_pub_t *pub)
2457 {
2458 dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2459
2460 if (dhd) {
2461 down(&dhd->proto_sem);
2462 return 1;
2463 }
2464 return 0;
2465 }
2466
2467 int dhd_os_proto_unblock(dhd_pub_t *pub)
2468 {
2469 dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2470
2471 if (dhd) {
2472 up(&dhd->proto_sem);
2473 return 1;
2474 }
2475
2476 return 0;
2477 }
2478
2479 unsigned int dhd_os_get_ioctl_resp_timeout(void)
2480 {
2481 return (unsigned int)dhd_ioctl_timeout_msec;
2482 }
2483
2484 void dhd_os_set_ioctl_resp_timeout(unsigned int timeout_msec)
2485 {
2486 dhd_ioctl_timeout_msec = (int)timeout_msec;
2487 }
2488
2489 int dhd_os_ioctl_resp_wait(dhd_pub_t *pub, uint *condition, bool *pending)
2490 {
2491 dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2492 DECLARE_WAITQUEUE(wait, current);
2493 int timeout = dhd_ioctl_timeout_msec;
2494
2495 /* Convert timeout in millsecond to jiffies */
2496 timeout = timeout * HZ / 1000;
2497
2498 /* Wait until control frame is available */
2499 add_wait_queue(&dhd->ioctl_resp_wait, &wait);
2500 set_current_state(TASK_INTERRUPTIBLE);
2501
2502 while (!(*condition) && (!signal_pending(current) && timeout))
2503 timeout = schedule_timeout(timeout);
2504
2505 if (signal_pending(current))
2506 *pending = true;
2507
2508 set_current_state(TASK_RUNNING);
2509 remove_wait_queue(&dhd->ioctl_resp_wait, &wait);
2510
2511 return timeout;
2512 }
2513
2514 int dhd_os_ioctl_resp_wake(dhd_pub_t *pub)
2515 {
2516 dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2517
2518 if (waitqueue_active(&dhd->ioctl_resp_wait))
2519 wake_up_interruptible(&dhd->ioctl_resp_wait);
2520
2521 return 0;
2522 }
2523
2524 void dhd_os_wd_timer(void *bus, uint wdtick)
2525 {
2526 dhd_pub_t *pub = bus;
2527 static uint save_dhd_watchdog_ms;
2528 dhd_info_t *dhd = (dhd_info_t *) pub->info;
2529
2530 /* don't start the wd until fw is loaded */
2531 if (pub->busstate == DHD_BUS_DOWN)
2532 return;
2533
2534 /* Totally stop the timer */
2535 if (!wdtick && dhd->wd_timer_valid == true) {
2536 del_timer_sync(&dhd->timer);
2537 dhd->wd_timer_valid = false;
2538 save_dhd_watchdog_ms = wdtick;
2539 return;
2540 }
2541
2542 if (wdtick) {
2543 dhd_watchdog_ms = (uint) wdtick;
2544
2545 if (save_dhd_watchdog_ms != dhd_watchdog_ms) {
2546
2547 if (dhd->wd_timer_valid == true)
2548 /* Stop timer and restart at new value */
2549 del_timer_sync(&dhd->timer);
2550
2551 /* Create timer again when watchdog period is
2552 dynamically changed or in the first instance
2553 */
2554 dhd->timer.expires =
2555 jiffies + dhd_watchdog_ms * HZ / 1000;
2556 add_timer(&dhd->timer);
2557
2558 } else {
2559 /* Re arm the timer, at last watchdog period */
2560 mod_timer(&dhd->timer,
2561 jiffies + dhd_watchdog_ms * HZ / 1000);
2562 }
2563
2564 dhd->wd_timer_valid = true;
2565 save_dhd_watchdog_ms = wdtick;
2566 }
2567 }
2568
2569 void *dhd_os_open_image(char *filename)
2570 {
2571 struct file *fp;
2572
2573 if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2574 return wl_cfg80211_request_fw(filename);
2575
2576 fp = filp_open(filename, O_RDONLY, 0);
2577 /*
2578 * 2.6.11 (FC4) supports filp_open() but later revs don't?
2579 * Alternative:
2580 * fp = open_namei(AT_FDCWD, filename, O_RD, 0);
2581 * ???
2582 */
2583 if (IS_ERR(fp))
2584 fp = NULL;
2585
2586 return fp;
2587 }
2588
2589 int dhd_os_get_image_block(char *buf, int len, void *image)
2590 {
2591 struct file *fp = (struct file *)image;
2592 int rdlen;
2593
2594 if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2595 return wl_cfg80211_read_fw(buf, len);
2596
2597 if (!image)
2598 return 0;
2599
2600 rdlen = kernel_read(fp, fp->f_pos, buf, len);
2601 if (rdlen > 0)
2602 fp->f_pos += rdlen;
2603
2604 return rdlen;
2605 }
2606
2607 void dhd_os_close_image(void *image)
2608 {
2609 if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2610 return wl_cfg80211_release_fw();
2611 if (image)
2612 filp_close((struct file *)image, NULL);
2613 }
2614
2615 void dhd_os_sdlock(dhd_pub_t *pub)
2616 {
2617 dhd_info_t *dhd;
2618
2619 dhd = (dhd_info_t *) (pub->info);
2620
2621 if (dhd->threads_only)
2622 down(&dhd->sdsem);
2623 else
2624 spin_lock_bh(&dhd->sdlock);
2625 }
2626
2627 void dhd_os_sdunlock(dhd_pub_t *pub)
2628 {
2629 dhd_info_t *dhd;
2630
2631 dhd = (dhd_info_t *) (pub->info);
2632
2633 if (dhd->threads_only)
2634 up(&dhd->sdsem);
2635 else
2636 spin_unlock_bh(&dhd->sdlock);
2637 }
2638
2639 void dhd_os_sdlock_txq(dhd_pub_t *pub)
2640 {
2641 dhd_info_t *dhd;
2642
2643 dhd = (dhd_info_t *) (pub->info);
2644 spin_lock_bh(&dhd->txqlock);
2645 }
2646
2647 void dhd_os_sdunlock_txq(dhd_pub_t *pub)
2648 {
2649 dhd_info_t *dhd;
2650
2651 dhd = (dhd_info_t *) (pub->info);
2652 spin_unlock_bh(&dhd->txqlock);
2653 }
2654
2655 void dhd_os_sdlock_rxq(dhd_pub_t *pub)
2656 {
2657 }
2658
2659 void dhd_os_sdunlock_rxq(dhd_pub_t *pub)
2660 {
2661 }
2662
2663 void dhd_os_sdtxlock(dhd_pub_t *pub)
2664 {
2665 dhd_os_sdlock(pub);
2666 }
2667
2668 void dhd_os_sdtxunlock(dhd_pub_t *pub)
2669 {
2670 dhd_os_sdunlock(pub);
2671 }
2672
2673 #if defined(CONFIG_WIRELESS_EXT)
2674 struct iw_statistics *dhd_get_wireless_stats(struct net_device *dev)
2675 {
2676 int res = 0;
2677 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2678
2679 res = wl_iw_get_wireless_stats(dev, &dhd->iw.wstats);
2680
2681 if (res == 0)
2682 return &dhd->iw.wstats;
2683 else
2684 return NULL;
2685 }
2686 #endif /* defined(CONFIG_WIRELESS_EXT) */
2687
2688 static int
2689 dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
2690 wl_event_msg_t *event, void **data)
2691 {
2692 int bcmerror = 0;
2693
2694 ASSERT(dhd != NULL);
2695
2696 bcmerror = wl_host_event(dhd, ifidx, pktdata, event, data);
2697 if (bcmerror != BCME_OK)
2698 return bcmerror;
2699
2700 #if defined(CONFIG_WIRELESS_EXT)
2701 if (!IS_CFG80211_FAVORITE()) {
2702 if ((dhd->iflist[*ifidx] == NULL)
2703 || (dhd->iflist[*ifidx]->net == NULL)) {
2704 DHD_ERROR(("%s Exit null pointer\n", __func__));
2705 return bcmerror;
2706 }
2707
2708 if (dhd->iflist[*ifidx]->net)
2709 wl_iw_event(dhd->iflist[*ifidx]->net, event, *data);
2710 }
2711 #endif /* defined(CONFIG_WIRELESS_EXT) */
2712
2713 if (IS_CFG80211_FAVORITE()) {
2714 ASSERT(dhd->iflist[*ifidx] != NULL);
2715 ASSERT(dhd->iflist[*ifidx]->net != NULL);
2716 if (dhd->iflist[*ifidx]->net)
2717 wl_cfg80211_event(dhd->iflist[*ifidx]->net, event,
2718 *data);
2719 }
2720
2721 return bcmerror;
2722 }
2723
2724 /* send up locally generated event */
2725 void dhd_sendup_event(dhd_pub_t *dhdp, wl_event_msg_t *event, void *data)
2726 {
2727 switch (be32_to_cpu(event->event_type)) {
2728 default:
2729 break;
2730 }
2731 }
2732
2733 void dhd_wait_for_event(dhd_pub_t *dhd, bool *lockvar)
2734 {
2735 struct dhd_info *dhdinfo = dhd->info;
2736 dhd_os_sdunlock(dhd);
2737 wait_event_interruptible_timeout(dhdinfo->ctrl_wait,
2738 (*lockvar == false), HZ * 2);
2739 dhd_os_sdlock(dhd);
2740 return;
2741 }
2742
2743 void dhd_wait_event_wakeup(dhd_pub_t *dhd)
2744 {
2745 struct dhd_info *dhdinfo = dhd->info;
2746 if (waitqueue_active(&dhdinfo->ctrl_wait))
2747 wake_up_interruptible(&dhdinfo->ctrl_wait);
2748 return;
2749 }
2750
2751 int dhd_dev_reset(struct net_device *dev, u8 flag)
2752 {
2753 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2754
2755 /* Turning off watchdog */
2756 if (flag)
2757 dhd_os_wd_timer(&dhd->pub, 0);
2758
2759 dhd_bus_devreset(&dhd->pub, flag);
2760
2761 /* Turning on watchdog back */
2762 if (!flag)
2763 dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
2764 DHD_ERROR(("%s: WLAN OFF DONE\n", __func__));
2765
2766 return 1;
2767 }
2768
2769 int net_os_set_suspend_disable(struct net_device *dev, int val)
2770 {
2771 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2772 int ret = 0;
2773
2774 if (dhd) {
2775 ret = dhd->pub.suspend_disable_flag;
2776 dhd->pub.suspend_disable_flag = val;
2777 }
2778 return ret;
2779 }
2780
2781 int net_os_set_suspend(struct net_device *dev, int val)
2782 {
2783 int ret = 0;
2784 #if defined(CONFIG_HAS_EARLYSUSPEND)
2785 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2786
2787 if (dhd) {
2788 dhd_os_proto_block(&dhd->pub);
2789 ret = dhd_set_suspend(val, &dhd->pub);
2790 dhd_os_proto_unblock(&dhd->pub);
2791 }
2792 #endif /* defined(CONFIG_HAS_EARLYSUSPEND) */
2793 return ret;
2794 }
2795
2796 int net_os_set_dtim_skip(struct net_device *dev, int val)
2797 {
2798 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2799
2800 if (dhd)
2801 dhd->pub.dtim_skip = val;
2802
2803 return 0;
2804 }
2805
2806 int net_os_set_packet_filter(struct net_device *dev, int val)
2807 {
2808 dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2809 int ret = 0;
2810
2811 /* Packet filtering is set only if we still in early-suspend and
2812 * we need either to turn it ON or turn it OFF
2813 * We can always turn it OFF in case of early-suspend, but we turn it
2814 * back ON only if suspend_disable_flag was not set
2815 */
2816 if (dhd && dhd->pub.up) {
2817 dhd_os_proto_block(&dhd->pub);
2818 if (dhd->pub.in_suspend) {
2819 if (!val || (val && !dhd->pub.suspend_disable_flag))
2820 dhd_set_packet_filter(val, &dhd->pub);
2821 }
2822 dhd_os_proto_unblock(&dhd->pub);
2823 }
2824 return ret;
2825 }
2826
2827 void dhd_dev_init_ioctl(struct net_device *dev)
2828 {
2829 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2830
2831 dhd_preinit_ioctls(&dhd->pub);
2832 }
2833
2834 #ifdef PNO_SUPPORT
2835 /* Linux wrapper to call common dhd_pno_clean */
2836 int dhd_dev_pno_reset(struct net_device *dev)
2837 {
2838 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2839
2840 return dhd_pno_clean(&dhd->pub);
2841 }
2842
2843 /* Linux wrapper to call common dhd_pno_enable */
2844 int dhd_dev_pno_enable(struct net_device *dev, int pfn_enabled)
2845 {
2846 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2847
2848 return dhd_pno_enable(&dhd->pub, pfn_enabled);
2849 }
2850
2851 /* Linux wrapper to call common dhd_pno_set */
2852 int
2853 dhd_dev_pno_set(struct net_device *dev, wlc_ssid_t *ssids_local, int nssid,
2854 unsigned char scan_fr)
2855 {
2856 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2857
2858 return dhd_pno_set(&dhd->pub, ssids_local, nssid, scan_fr);
2859 }
2860
2861 /* Linux wrapper to get pno status */
2862 int dhd_dev_get_pno_status(struct net_device *dev)
2863 {
2864 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2865
2866 return dhd_pno_get_status(&dhd->pub);
2867 }
2868
2869 #endif /* PNO_SUPPORT */
2870
2871 static int dhd_get_pend_8021x_cnt(dhd_info_t *dhd)
2872 {
2873 return atomic_read(&dhd->pend_8021x_cnt);
2874 }
2875
2876 #define MAX_WAIT_FOR_8021X_TX 10
2877
2878 int dhd_wait_pend8021x(struct net_device *dev)
2879 {
2880 dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2881 int timeout = 10 * HZ / 1000;
2882 int ntimes = MAX_WAIT_FOR_8021X_TX;
2883 int pend = dhd_get_pend_8021x_cnt(dhd);
2884
2885 while (ntimes && pend) {
2886 if (pend) {
2887 set_current_state(TASK_INTERRUPTIBLE);
2888 schedule_timeout(timeout);
2889 set_current_state(TASK_RUNNING);
2890 ntimes--;
2891 }
2892 pend = dhd_get_pend_8021x_cnt(dhd);
2893 }
2894 return pend;
2895 }
2896
2897 #ifdef DHD_DEBUG
2898 int write_to_file(dhd_pub_t *dhd, u8 *buf, int size)
2899 {
2900 int ret = 0;
2901 struct file *fp;
2902 mm_segment_t old_fs;
2903 loff_t pos = 0;
2904
2905 /* change to KERNEL_DS address limit */
2906 old_fs = get_fs();
2907 set_fs(KERNEL_DS);
2908
2909 /* open file to write */
2910 fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
2911 if (!fp) {
2912 DHD_ERROR(("%s: open file error\n", __func__));
2913 ret = -1;
2914 goto exit;
2915 }
2916
2917 /* Write buf to file */
2918 fp->f_op->write(fp, buf, size, &pos);
2919
2920 exit:
2921 /* free buf before return */
2922 kfree(buf);
2923 /* close file before return */
2924 if (fp)
2925 filp_close(fp, current->files);
2926 /* restore previous address limit */
2927 set_fs(old_fs);
2928
2929 return ret;
2930 }
2931 #endif /* DHD_DEBUG */
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