1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries.
4 * All rights reserved.
5 */
6
7 #include <linux/irq.h>
8 #include <linux/kthread.h>
9 #include <linux/firmware.h>
10 #include <linux/netdevice.h>
11 #include <linux/inetdevice.h>
12
13 #include "wilc_wfi_cfgoperations.h"
14 #include "wilc_wlan_cfg.h"
15
16 #define WILC_MULTICAST_TABLE_SIZE 8
17
isr_uh_routine(int irq,void * user_data)18 static irqreturn_t isr_uh_routine(int irq, void *user_data)
19 {
20 struct net_device *dev = user_data;
21 struct wilc_vif *vif = netdev_priv(dev);
22 struct wilc *wilc = vif->wilc;
23
24 if (wilc->close) {
25 netdev_err(dev, "Can't handle UH interrupt\n");
26 return IRQ_HANDLED;
27 }
28 return IRQ_WAKE_THREAD;
29 }
30
isr_bh_routine(int irq,void * userdata)31 static irqreturn_t isr_bh_routine(int irq, void *userdata)
32 {
33 struct net_device *dev = userdata;
34 struct wilc_vif *vif = netdev_priv(userdata);
35 struct wilc *wilc = vif->wilc;
36
37 if (wilc->close) {
38 netdev_err(dev, "Can't handle BH interrupt\n");
39 return IRQ_HANDLED;
40 }
41
42 wilc_handle_isr(wilc);
43
44 return IRQ_HANDLED;
45 }
46
init_irq(struct net_device * dev)47 static int init_irq(struct net_device *dev)
48 {
49 int ret = 0;
50 struct wilc_vif *vif = netdev_priv(dev);
51 struct wilc *wl = vif->wilc;
52
53 ret = gpiod_direction_input(wl->gpio_irq);
54 if (ret) {
55 netdev_err(dev, "could not obtain gpio for WILC_INTR\n");
56 return ret;
57 }
58
59 wl->dev_irq_num = gpiod_to_irq(wl->gpio_irq);
60
61 ret = request_threaded_irq(wl->dev_irq_num, isr_uh_routine,
62 isr_bh_routine,
63 IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
64 "WILC_IRQ", dev);
65 if (ret < 0)
66 netdev_err(dev, "Failed to request IRQ\n");
67 else
68 netdev_dbg(dev, "IRQ request succeeded IRQ-NUM= %d\n",
69 wl->dev_irq_num);
70
71 return ret;
72 }
73
deinit_irq(struct net_device * dev)74 static void deinit_irq(struct net_device *dev)
75 {
76 struct wilc_vif *vif = netdev_priv(dev);
77 struct wilc *wilc = vif->wilc;
78
79 /* Deinitialize IRQ */
80 if (wilc->dev_irq_num)
81 free_irq(wilc->dev_irq_num, wilc);
82 }
83
wilc_mac_indicate(struct wilc * wilc)84 void wilc_mac_indicate(struct wilc *wilc)
85 {
86 s8 status;
87
88 wilc_wlan_cfg_get_val(wilc, WID_STATUS, &status, 1);
89 if (wilc->mac_status == WILC_MAC_STATUS_INIT) {
90 wilc->mac_status = status;
91 complete(&wilc->sync_event);
92 } else {
93 wilc->mac_status = status;
94 }
95 }
96
get_if_handler(struct wilc * wilc,u8 * mac_header)97 static struct net_device *get_if_handler(struct wilc *wilc, u8 *mac_header)
98 {
99 u8 *bssid, *bssid1;
100 int i = 0;
101 struct net_device *ndev = NULL;
102
103 bssid = mac_header + 10;
104 bssid1 = mac_header + 4;
105
106 mutex_lock(&wilc->vif_mutex);
107 for (i = 0; i < wilc->vif_num; i++) {
108 if (wilc->vif[i]->mode == WILC_STATION_MODE)
109 if (ether_addr_equal_unaligned(bssid,
110 wilc->vif[i]->bssid)) {
111 ndev = wilc->vif[i]->ndev;
112 goto out;
113 }
114 if (wilc->vif[i]->mode == WILC_AP_MODE)
115 if (ether_addr_equal_unaligned(bssid1,
116 wilc->vif[i]->bssid)) {
117 ndev = wilc->vif[i]->ndev;
118 goto out;
119 }
120 }
121 out:
122 mutex_unlock(&wilc->vif_mutex);
123 return ndev;
124 }
125
wilc_wlan_set_bssid(struct net_device * wilc_netdev,u8 * bssid,u8 mode)126 void wilc_wlan_set_bssid(struct net_device *wilc_netdev, u8 *bssid, u8 mode)
127 {
128 struct wilc_vif *vif = netdev_priv(wilc_netdev);
129
130 if (bssid)
131 ether_addr_copy(vif->bssid, bssid);
132 else
133 eth_zero_addr(vif->bssid);
134
135 vif->mode = mode;
136 }
137
wilc_wlan_get_num_conn_ifcs(struct wilc * wilc)138 int wilc_wlan_get_num_conn_ifcs(struct wilc *wilc)
139 {
140 u8 i = 0;
141 u8 ret_val = 0;
142
143 for (i = 0; i < wilc->vif_num; i++)
144 if (!is_zero_ether_addr(wilc->vif[i]->bssid))
145 ret_val++;
146
147 return ret_val;
148 }
149
wilc_txq_task(void * vp)150 static int wilc_txq_task(void *vp)
151 {
152 int ret;
153 u32 txq_count;
154 struct wilc *wl = vp;
155
156 complete(&wl->txq_thread_started);
157 while (1) {
158 wait_for_completion(&wl->txq_event);
159
160 if (wl->close) {
161 complete(&wl->txq_thread_started);
162
163 while (!kthread_should_stop())
164 schedule();
165 break;
166 }
167 do {
168 ret = wilc_wlan_handle_txq(wl, &txq_count);
169 if (txq_count < FLOW_CONTROL_LOWER_THRESHOLD) {
170 int i;
171 struct wilc_vif *ifc;
172
173 mutex_lock(&wl->vif_mutex);
174 for (i = 0; i < wl->vif_num; i++) {
175 ifc = wl->vif[i];
176 if (ifc->mac_opened && ifc->ndev)
177 netif_wake_queue(ifc->ndev);
178 }
179 mutex_unlock(&wl->vif_mutex);
180 }
181 } while (ret == -ENOBUFS && !wl->close);
182 }
183 return 0;
184 }
185
wilc_wlan_get_firmware(struct net_device * dev)186 static int wilc_wlan_get_firmware(struct net_device *dev)
187 {
188 struct wilc_vif *vif = netdev_priv(dev);
189 struct wilc *wilc = vif->wilc;
190 int chip_id, ret = 0;
191 const struct firmware *wilc_firmware;
192 char *firmware;
193
194 chip_id = wilc_get_chipid(wilc, false);
195
196 if (chip_id < 0x1003a0)
197 firmware = FIRMWARE_1002;
198 else
199 firmware = FIRMWARE_1003;
200
201 netdev_info(dev, "loading firmware %s\n", firmware);
202
203 if (request_firmware(&wilc_firmware, firmware, wilc->dev) != 0) {
204 netdev_err(dev, "%s - firmware not available\n", firmware);
205 ret = -1;
206 goto fail;
207 }
208 wilc->firmware = wilc_firmware;
209
210 fail:
211
212 return ret;
213 }
214
wilc_start_firmware(struct net_device * dev)215 static int wilc_start_firmware(struct net_device *dev)
216 {
217 struct wilc_vif *vif = netdev_priv(dev);
218 struct wilc *wilc = vif->wilc;
219 int ret = 0;
220
221 ret = wilc_wlan_start(wilc);
222 if (ret < 0)
223 return ret;
224
225 if (!wait_for_completion_timeout(&wilc->sync_event,
226 msecs_to_jiffies(5000)))
227 return -ETIME;
228
229 return 0;
230 }
231
wilc1000_firmware_download(struct net_device * dev)232 static int wilc1000_firmware_download(struct net_device *dev)
233 {
234 struct wilc_vif *vif = netdev_priv(dev);
235 struct wilc *wilc = vif->wilc;
236 int ret = 0;
237
238 if (!wilc->firmware) {
239 netdev_err(dev, "Firmware buffer is NULL\n");
240 return -ENOBUFS;
241 }
242
243 ret = wilc_wlan_firmware_download(wilc, wilc->firmware->data,
244 wilc->firmware->size);
245 if (ret < 0)
246 return ret;
247
248 release_firmware(wilc->firmware);
249 wilc->firmware = NULL;
250
251 netdev_dbg(dev, "Download Succeeded\n");
252
253 return 0;
254 }
255
wilc_init_fw_config(struct net_device * dev,struct wilc_vif * vif)256 static int wilc_init_fw_config(struct net_device *dev, struct wilc_vif *vif)
257 {
258 struct wilc_priv *priv = &vif->priv;
259 struct host_if_drv *hif_drv;
260 u8 b;
261 u16 hw;
262 u32 w;
263
264 netdev_dbg(dev, "Start configuring Firmware\n");
265 hif_drv = (struct host_if_drv *)priv->hif_drv;
266 netdev_dbg(dev, "Host = %p\n", hif_drv);
267
268 w = vif->iftype;
269 cpu_to_le32s(&w);
270 if (!wilc_wlan_cfg_set(vif, 1, WID_SET_OPERATION_MODE, (u8 *)&w, 4,
271 0, 0))
272 goto fail;
273
274 b = WILC_FW_BSS_TYPE_INFRA;
275 if (!wilc_wlan_cfg_set(vif, 0, WID_BSS_TYPE, &b, 1, 0, 0))
276 goto fail;
277
278 b = WILC_FW_TX_RATE_AUTO;
279 if (!wilc_wlan_cfg_set(vif, 0, WID_CURRENT_TX_RATE, &b, 1, 0, 0))
280 goto fail;
281
282 b = WILC_FW_OPER_MODE_G_MIXED_11B_2;
283 if (!wilc_wlan_cfg_set(vif, 0, WID_11G_OPERATING_MODE, &b, 1, 0, 0))
284 goto fail;
285
286 b = WILC_FW_PREAMBLE_SHORT;
287 if (!wilc_wlan_cfg_set(vif, 0, WID_PREAMBLE, &b, 1, 0, 0))
288 goto fail;
289
290 b = WILC_FW_11N_PROT_AUTO;
291 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_PROT_MECH, &b, 1, 0, 0))
292 goto fail;
293
294 b = WILC_FW_ACTIVE_SCAN;
295 if (!wilc_wlan_cfg_set(vif, 0, WID_SCAN_TYPE, &b, 1, 0, 0))
296 goto fail;
297
298 b = WILC_FW_SITE_SURVEY_OFF;
299 if (!wilc_wlan_cfg_set(vif, 0, WID_SITE_SURVEY, &b, 1, 0, 0))
300 goto fail;
301
302 hw = 0xffff;
303 cpu_to_le16s(&hw);
304 if (!wilc_wlan_cfg_set(vif, 0, WID_RTS_THRESHOLD, (u8 *)&hw, 2, 0, 0))
305 goto fail;
306
307 hw = 2346;
308 cpu_to_le16s(&hw);
309 if (!wilc_wlan_cfg_set(vif, 0, WID_FRAG_THRESHOLD, (u8 *)&hw, 2, 0, 0))
310 goto fail;
311
312 b = 0;
313 if (!wilc_wlan_cfg_set(vif, 0, WID_BCAST_SSID, &b, 1, 0, 0))
314 goto fail;
315
316 b = 1;
317 if (!wilc_wlan_cfg_set(vif, 0, WID_QOS_ENABLE, &b, 1, 0, 0))
318 goto fail;
319
320 b = WILC_FW_NO_POWERSAVE;
321 if (!wilc_wlan_cfg_set(vif, 0, WID_POWER_MANAGEMENT, &b, 1, 0, 0))
322 goto fail;
323
324 b = WILC_FW_SEC_NO;
325 if (!wilc_wlan_cfg_set(vif, 0, WID_11I_MODE, &b, 1, 0, 0))
326 goto fail;
327
328 b = WILC_FW_AUTH_OPEN_SYSTEM;
329 if (!wilc_wlan_cfg_set(vif, 0, WID_AUTH_TYPE, &b, 1, 0, 0))
330 goto fail;
331
332 b = 3;
333 if (!wilc_wlan_cfg_set(vif, 0, WID_LISTEN_INTERVAL, &b, 1, 0, 0))
334 goto fail;
335
336 b = 3;
337 if (!wilc_wlan_cfg_set(vif, 0, WID_DTIM_PERIOD, &b, 1, 0, 0))
338 goto fail;
339
340 b = WILC_FW_ACK_POLICY_NORMAL;
341 if (!wilc_wlan_cfg_set(vif, 0, WID_ACK_POLICY, &b, 1, 0, 0))
342 goto fail;
343
344 b = 0;
345 if (!wilc_wlan_cfg_set(vif, 0, WID_USER_CONTROL_ON_TX_POWER, &b, 1,
346 0, 0))
347 goto fail;
348
349 b = 48;
350 if (!wilc_wlan_cfg_set(vif, 0, WID_TX_POWER_LEVEL_11A, &b, 1, 0, 0))
351 goto fail;
352
353 b = 28;
354 if (!wilc_wlan_cfg_set(vif, 0, WID_TX_POWER_LEVEL_11B, &b, 1, 0, 0))
355 goto fail;
356
357 hw = 100;
358 cpu_to_le16s(&hw);
359 if (!wilc_wlan_cfg_set(vif, 0, WID_BEACON_INTERVAL, (u8 *)&hw, 2, 0, 0))
360 goto fail;
361
362 b = WILC_FW_REKEY_POLICY_DISABLE;
363 if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_POLICY, &b, 1, 0, 0))
364 goto fail;
365
366 w = 84600;
367 cpu_to_le32s(&w);
368 if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_PERIOD, (u8 *)&w, 4, 0, 0))
369 goto fail;
370
371 w = 500;
372 cpu_to_le32s(&w);
373 if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_PACKET_COUNT, (u8 *)&w, 4, 0,
374 0))
375 goto fail;
376
377 b = 1;
378 if (!wilc_wlan_cfg_set(vif, 0, WID_SHORT_SLOT_ALLOWED, &b, 1, 0,
379 0))
380 goto fail;
381
382 b = WILC_FW_ERP_PROT_SELF_CTS;
383 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_ERP_PROT_TYPE, &b, 1, 0, 0))
384 goto fail;
385
386 b = 1;
387 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_ENABLE, &b, 1, 0, 0))
388 goto fail;
389
390 b = WILC_FW_11N_OP_MODE_HT_MIXED;
391 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_OPERATING_MODE, &b, 1, 0, 0))
392 goto fail;
393
394 b = 1;
395 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_TXOP_PROT_DISABLE, &b, 1, 0, 0))
396 goto fail;
397
398 b = WILC_FW_OBBS_NONHT_DETECT_PROTECT_REPORT;
399 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_OBSS_NONHT_DETECTION, &b, 1,
400 0, 0))
401 goto fail;
402
403 b = WILC_FW_HT_PROT_RTS_CTS_NONHT;
404 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_HT_PROT_TYPE, &b, 1, 0, 0))
405 goto fail;
406
407 b = 0;
408 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_RIFS_PROT_ENABLE, &b, 1, 0,
409 0))
410 goto fail;
411
412 b = 7;
413 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_CURRENT_TX_MCS, &b, 1, 0, 0))
414 goto fail;
415
416 b = 1;
417 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_IMMEDIATE_BA_ENABLED, &b, 1,
418 1, 1))
419 goto fail;
420
421 return 0;
422
423 fail:
424 return -1;
425 }
426
wlan_deinit_locks(struct net_device * dev)427 static void wlan_deinit_locks(struct net_device *dev)
428 {
429 struct wilc_vif *vif = netdev_priv(dev);
430 struct wilc *wilc = vif->wilc;
431
432 mutex_destroy(&wilc->hif_cs);
433 mutex_destroy(&wilc->rxq_cs);
434 mutex_destroy(&wilc->cfg_cmd_lock);
435 mutex_destroy(&wilc->txq_add_to_head_cs);
436 mutex_destroy(&wilc->vif_mutex);
437 }
438
wlan_deinitialize_threads(struct net_device * dev)439 static void wlan_deinitialize_threads(struct net_device *dev)
440 {
441 struct wilc_vif *vif = netdev_priv(dev);
442 struct wilc *wl = vif->wilc;
443
444 wl->close = 1;
445
446 complete(&wl->txq_event);
447
448 if (wl->txq_thread) {
449 kthread_stop(wl->txq_thread);
450 wl->txq_thread = NULL;
451 }
452 }
453
wilc_wlan_deinitialize(struct net_device * dev)454 static void wilc_wlan_deinitialize(struct net_device *dev)
455 {
456 struct wilc_vif *vif = netdev_priv(dev);
457 struct wilc *wl = vif->wilc;
458
459 if (!wl) {
460 netdev_err(dev, "wl is NULL\n");
461 return;
462 }
463
464 if (wl->initialized) {
465 netdev_info(dev, "Deinitializing wilc1000...\n");
466
467 if (!wl->dev_irq_num &&
468 wl->hif_func->disable_interrupt) {
469 mutex_lock(&wl->hif_cs);
470 wl->hif_func->disable_interrupt(wl);
471 mutex_unlock(&wl->hif_cs);
472 }
473 complete(&wl->txq_event);
474
475 wlan_deinitialize_threads(dev);
476 deinit_irq(dev);
477
478 wilc_wlan_stop(wl, vif);
479 wilc_wlan_cleanup(dev);
480 wlan_deinit_locks(dev);
481
482 wl->initialized = false;
483
484 netdev_dbg(dev, "wilc1000 deinitialization Done\n");
485 } else {
486 netdev_dbg(dev, "wilc1000 is not initialized\n");
487 }
488 }
489
wlan_initialize_threads(struct net_device * dev)490 static int wlan_initialize_threads(struct net_device *dev)
491 {
492 struct wilc_vif *vif = netdev_priv(dev);
493 struct wilc *wilc = vif->wilc;
494
495 wilc->txq_thread = kthread_run(wilc_txq_task, (void *)wilc,
496 "K_TXQ_TASK");
497 if (IS_ERR(wilc->txq_thread)) {
498 netdev_err(dev, "couldn't create TXQ thread\n");
499 wilc->close = 0;
500 return PTR_ERR(wilc->txq_thread);
501 }
502 wait_for_completion(&wilc->txq_thread_started);
503
504 return 0;
505 }
506
wilc_wlan_initialize(struct net_device * dev,struct wilc_vif * vif)507 static int wilc_wlan_initialize(struct net_device *dev, struct wilc_vif *vif)
508 {
509 int ret = 0;
510 struct wilc *wl = vif->wilc;
511
512 if (!wl->initialized) {
513 wl->mac_status = WILC_MAC_STATUS_INIT;
514 wl->close = 0;
515
516 ret = wilc_wlan_init(dev);
517 if (ret < 0)
518 return -EIO;
519
520 ret = wlan_initialize_threads(dev);
521 if (ret < 0) {
522 ret = -EIO;
523 goto fail_wilc_wlan;
524 }
525
526 if (wl->gpio_irq && init_irq(dev)) {
527 ret = -EIO;
528 goto fail_threads;
529 }
530
531 if (!wl->dev_irq_num &&
532 wl->hif_func->enable_interrupt &&
533 wl->hif_func->enable_interrupt(wl)) {
534 ret = -EIO;
535 goto fail_irq_init;
536 }
537
538 if (wilc_wlan_get_firmware(dev)) {
539 ret = -EIO;
540 goto fail_irq_enable;
541 }
542
543 ret = wilc1000_firmware_download(dev);
544 if (ret < 0) {
545 ret = -EIO;
546 goto fail_irq_enable;
547 }
548
549 ret = wilc_start_firmware(dev);
550 if (ret < 0) {
551 ret = -EIO;
552 goto fail_irq_enable;
553 }
554
555 if (wilc_wlan_cfg_get(vif, 1, WID_FIRMWARE_VERSION, 1, 0)) {
556 int size;
557 char firmware_ver[20];
558
559 size = wilc_wlan_cfg_get_val(wl, WID_FIRMWARE_VERSION,
560 firmware_ver,
561 sizeof(firmware_ver));
562 firmware_ver[size] = '\0';
563 netdev_dbg(dev, "Firmware Ver = %s\n", firmware_ver);
564 }
565 ret = wilc_init_fw_config(dev, vif);
566
567 if (ret < 0) {
568 netdev_err(dev, "Failed to configure firmware\n");
569 ret = -EIO;
570 goto fail_fw_start;
571 }
572 wl->initialized = true;
573 return 0;
574
575 fail_fw_start:
576 wilc_wlan_stop(wl, vif);
577
578 fail_irq_enable:
579 if (!wl->dev_irq_num &&
580 wl->hif_func->disable_interrupt)
581 wl->hif_func->disable_interrupt(wl);
582 fail_irq_init:
583 if (wl->dev_irq_num)
584 deinit_irq(dev);
585 fail_threads:
586 wlan_deinitialize_threads(dev);
587 fail_wilc_wlan:
588 wilc_wlan_cleanup(dev);
589 netdev_err(dev, "WLAN initialization FAILED\n");
590 } else {
591 netdev_dbg(dev, "wilc1000 already initialized\n");
592 }
593 return ret;
594 }
595
mac_init_fn(struct net_device * ndev)596 static int mac_init_fn(struct net_device *ndev)
597 {
598 netif_start_queue(ndev);
599 netif_stop_queue(ndev);
600
601 return 0;
602 }
603
wilc_mac_open(struct net_device * ndev)604 static int wilc_mac_open(struct net_device *ndev)
605 {
606 struct wilc_vif *vif = netdev_priv(ndev);
607 struct wilc *wl = vif->wilc;
608 struct wilc_priv *priv = wdev_priv(vif->ndev->ieee80211_ptr);
609 unsigned char mac_add[ETH_ALEN] = {0};
610 int ret = 0;
611
612 if (!wl || !wl->dev) {
613 netdev_err(ndev, "device not ready\n");
614 return -ENODEV;
615 }
616
617 netdev_dbg(ndev, "MAC OPEN[%p]\n", ndev);
618
619 ret = wilc_init_host_int(ndev);
620 if (ret < 0)
621 return ret;
622
623 ret = wilc_wlan_initialize(ndev, vif);
624 if (ret < 0) {
625 wilc_deinit_host_int(ndev);
626 return ret;
627 }
628
629 wilc_set_operation_mode(vif, wilc_get_vif_idx(vif), vif->iftype,
630 vif->idx);
631 wilc_get_mac_address(vif, mac_add);
632 netdev_dbg(ndev, "Mac address: %pM\n", mac_add);
633 ether_addr_copy(ndev->dev_addr, mac_add);
634
635 if (!is_valid_ether_addr(ndev->dev_addr)) {
636 netdev_err(ndev, "Wrong MAC address\n");
637 wilc_deinit_host_int(ndev);
638 wilc_wlan_deinitialize(ndev);
639 return -EINVAL;
640 }
641
642 wilc_mgmt_frame_register(vif->ndev->ieee80211_ptr->wiphy,
643 vif->ndev->ieee80211_ptr,
644 vif->frame_reg[0].type,
645 vif->frame_reg[0].reg);
646 wilc_mgmt_frame_register(vif->ndev->ieee80211_ptr->wiphy,
647 vif->ndev->ieee80211_ptr,
648 vif->frame_reg[1].type,
649 vif->frame_reg[1].reg);
650 netif_wake_queue(ndev);
651 wl->open_ifcs++;
652 priv->p2p.local_random = 0x01;
653 vif->mac_opened = 1;
654 return 0;
655 }
656
mac_stats(struct net_device * dev)657 static struct net_device_stats *mac_stats(struct net_device *dev)
658 {
659 struct wilc_vif *vif = netdev_priv(dev);
660
661 return &vif->netstats;
662 }
663
wilc_set_multicast_list(struct net_device * dev)664 static void wilc_set_multicast_list(struct net_device *dev)
665 {
666 struct netdev_hw_addr *ha;
667 struct wilc_vif *vif = netdev_priv(dev);
668 int i;
669 u8 *mc_list;
670 u8 *cur_mc;
671
672 if (dev->flags & IFF_PROMISC)
673 return;
674
675 if (dev->flags & IFF_ALLMULTI ||
676 dev->mc.count > WILC_MULTICAST_TABLE_SIZE) {
677 wilc_setup_multicast_filter(vif, 0, 0, NULL);
678 return;
679 }
680
681 if (dev->mc.count == 0) {
682 wilc_setup_multicast_filter(vif, 1, 0, NULL);
683 return;
684 }
685
686 mc_list = kmalloc_array(dev->mc.count, ETH_ALEN, GFP_ATOMIC);
687 if (!mc_list)
688 return;
689
690 cur_mc = mc_list;
691 i = 0;
692 netdev_for_each_mc_addr(ha, dev) {
693 memcpy(cur_mc, ha->addr, ETH_ALEN);
694 netdev_dbg(dev, "Entry[%d]: %pM\n", i, cur_mc);
695 i++;
696 cur_mc += ETH_ALEN;
697 }
698
699 if (wilc_setup_multicast_filter(vif, 1, dev->mc.count, mc_list))
700 kfree(mc_list);
701 }
702
wilc_tx_complete(void * priv,int status)703 static void wilc_tx_complete(void *priv, int status)
704 {
705 struct tx_complete_data *pv_data = priv;
706
707 dev_kfree_skb(pv_data->skb);
708 kfree(pv_data);
709 }
710
wilc_mac_xmit(struct sk_buff * skb,struct net_device * ndev)711 netdev_tx_t wilc_mac_xmit(struct sk_buff *skb, struct net_device *ndev)
712 {
713 struct wilc_vif *vif = netdev_priv(ndev);
714 struct wilc *wilc = vif->wilc;
715 struct tx_complete_data *tx_data = NULL;
716 int queue_count;
717
718 if (skb->dev != ndev) {
719 netdev_err(ndev, "Packet not destined to this device\n");
720 return 0;
721 }
722
723 tx_data = kmalloc(sizeof(*tx_data), GFP_ATOMIC);
724 if (!tx_data) {
725 dev_kfree_skb(skb);
726 netif_wake_queue(ndev);
727 return 0;
728 }
729
730 tx_data->buff = skb->data;
731 tx_data->size = skb->len;
732 tx_data->skb = skb;
733
734 vif->netstats.tx_packets++;
735 vif->netstats.tx_bytes += tx_data->size;
736 queue_count = wilc_wlan_txq_add_net_pkt(ndev, (void *)tx_data,
737 tx_data->buff, tx_data->size,
738 wilc_tx_complete);
739
740 if (queue_count > FLOW_CONTROL_UPPER_THRESHOLD) {
741 int i;
742
743 mutex_lock(&wilc->vif_mutex);
744 for (i = 0; i < wilc->vif_num; i++) {
745 if (wilc->vif[i]->mac_opened)
746 netif_stop_queue(wilc->vif[i]->ndev);
747 }
748 mutex_unlock(&wilc->vif_mutex);
749 }
750
751 return 0;
752 }
753
wilc_mac_close(struct net_device * ndev)754 static int wilc_mac_close(struct net_device *ndev)
755 {
756 struct wilc_vif *vif = netdev_priv(ndev);
757 struct wilc *wl = vif->wilc;
758
759 netdev_dbg(ndev, "Mac close\n");
760
761 if (wl->open_ifcs > 0)
762 wl->open_ifcs--;
763 else
764 return 0;
765
766 if (vif->ndev) {
767 netif_stop_queue(vif->ndev);
768
769 wilc_deinit_host_int(vif->ndev);
770 }
771
772 if (wl->open_ifcs == 0) {
773 netdev_dbg(ndev, "Deinitializing wilc1000\n");
774 wl->close = 1;
775 wilc_wlan_deinitialize(ndev);
776 }
777
778 vif->mac_opened = 0;
779
780 return 0;
781 }
782
wilc_frmw_to_host(struct wilc * wilc,u8 * buff,u32 size,u32 pkt_offset)783 void wilc_frmw_to_host(struct wilc *wilc, u8 *buff, u32 size,
784 u32 pkt_offset)
785 {
786 unsigned int frame_len = 0;
787 int stats;
788 unsigned char *buff_to_send = NULL;
789 struct sk_buff *skb;
790 struct net_device *wilc_netdev;
791 struct wilc_vif *vif;
792
793 if (!wilc)
794 return;
795
796 wilc_netdev = get_if_handler(wilc, buff);
797 if (!wilc_netdev)
798 return;
799
800 buff += pkt_offset;
801 vif = netdev_priv(wilc_netdev);
802
803 if (size > 0) {
804 frame_len = size;
805 buff_to_send = buff;
806
807 skb = dev_alloc_skb(frame_len);
808 if (!skb)
809 return;
810
811 skb->dev = wilc_netdev;
812
813 skb_put_data(skb, buff_to_send, frame_len);
814
815 skb->protocol = eth_type_trans(skb, wilc_netdev);
816 vif->netstats.rx_packets++;
817 vif->netstats.rx_bytes += frame_len;
818 skb->ip_summed = CHECKSUM_UNNECESSARY;
819 stats = netif_rx(skb);
820 netdev_dbg(wilc_netdev, "netif_rx ret value is: %d\n", stats);
821 }
822 }
823
wilc_wfi_mgmt_rx(struct wilc * wilc,u8 * buff,u32 size)824 void wilc_wfi_mgmt_rx(struct wilc *wilc, u8 *buff, u32 size)
825 {
826 int i = 0;
827 struct wilc_vif *vif;
828
829 mutex_lock(&wilc->vif_mutex);
830 for (i = 0; i < wilc->vif_num; i++) {
831 u16 type = le16_to_cpup((__le16 *)buff);
832
833 vif = netdev_priv(wilc->vif[i]->ndev);
834 if ((type == vif->frame_reg[0].type && vif->frame_reg[0].reg) ||
835 (type == vif->frame_reg[1].type && vif->frame_reg[1].reg)) {
836 wilc_wfi_p2p_rx(vif, buff, size);
837 break;
838 }
839
840 if (vif->monitor_flag) {
841 wilc_wfi_monitor_rx(wilc->monitor_dev, buff, size);
842 break;
843 }
844 }
845 mutex_unlock(&wilc->vif_mutex);
846 }
847
848 static const struct net_device_ops wilc_netdev_ops = {
849 .ndo_init = mac_init_fn,
850 .ndo_open = wilc_mac_open,
851 .ndo_stop = wilc_mac_close,
852 .ndo_start_xmit = wilc_mac_xmit,
853 .ndo_get_stats = mac_stats,
854 .ndo_set_rx_mode = wilc_set_multicast_list,
855 };
856
wilc_netdev_cleanup(struct wilc * wilc)857 void wilc_netdev_cleanup(struct wilc *wilc)
858 {
859 int i;
860
861 if (!wilc)
862 return;
863
864 if (wilc->firmware) {
865 release_firmware(wilc->firmware);
866 wilc->firmware = NULL;
867 }
868
869 for (i = 0; i < wilc->vif_num; i++) {
870 if (wilc->vif[i] && wilc->vif[i]->ndev)
871 unregister_netdev(wilc->vif[i]->ndev);
872 }
873
874 wilc_wfi_deinit_mon_interface(wilc, false);
875 flush_workqueue(wilc->hif_workqueue);
876 destroy_workqueue(wilc->hif_workqueue);
877 wilc_wlan_cfg_deinit(wilc);
878 kfree(wilc->bus_data);
879 wiphy_unregister(wilc->wiphy);
880 wiphy_free(wilc->wiphy);
881 }
882 EXPORT_SYMBOL_GPL(wilc_netdev_cleanup);
883
wilc_netdev_ifc_init(struct wilc * wl,const char * name,int vif_type,enum nl80211_iftype type,bool rtnl_locked)884 struct wilc_vif *wilc_netdev_ifc_init(struct wilc *wl, const char *name,
885 int vif_type, enum nl80211_iftype type,
886 bool rtnl_locked)
887 {
888 struct net_device *ndev;
889 struct wilc_vif *vif;
890 int ret;
891
892 ndev = alloc_etherdev(sizeof(*vif));
893 if (!ndev)
894 return ERR_PTR(-ENOMEM);
895
896 vif = netdev_priv(ndev);
897 ndev->ieee80211_ptr = &vif->priv.wdev;
898 strcpy(ndev->name, name);
899 vif->wilc = wl;
900 vif->ndev = ndev;
901 ndev->ml_priv = vif;
902
903 ndev->netdev_ops = &wilc_netdev_ops;
904
905 SET_NETDEV_DEV(ndev, wiphy_dev(wl->wiphy));
906
907 vif->priv.wdev.wiphy = wl->wiphy;
908 vif->priv.wdev.netdev = ndev;
909 vif->priv.wdev.iftype = type;
910 vif->priv.dev = ndev;
911
912 if (rtnl_locked)
913 ret = register_netdevice(ndev);
914 else
915 ret = register_netdev(ndev);
916
917 if (ret) {
918 free_netdev(ndev);
919 return ERR_PTR(-EFAULT);
920 }
921
922 ndev->needs_free_netdev = true;
923 vif->iftype = vif_type;
924 vif->wilc->vif[wl->vif_num] = vif;
925 vif->idx = wl->vif_num;
926 wl->vif_num += 1;
927 vif->mac_opened = 0;
928 return vif;
929 }
930
931 MODULE_LICENSE("GPL");
932
