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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 "cfg80211.h"
14#include "wlan_cfg.h"
15
16#define WILC_MULTICAST_TABLE_SIZE 8
17
18/* latest API version supported */
19#define WILC1000_API_VER 1
20
21#define WILC1000_FW_PREFIX "atmel/wilc1000_wifi_firmware-"
22#define __WILC1000_FW(api) WILC1000_FW_PREFIX #api ".bin"
23#define WILC1000_FW(api) __WILC1000_FW(api)
24
25static irqreturn_t isr_uh_routine(int irq, void *user_data)
26{
27 struct wilc *wilc = user_data;
28
29 if (wilc->close) {
30 pr_err("Can't handle UH interrupt");
31 return IRQ_HANDLED;
32 }
33 return IRQ_WAKE_THREAD;
34}
35
36static irqreturn_t isr_bh_routine(int irq, void *userdata)
37{
38 struct wilc *wilc = userdata;
39
40 if (wilc->close) {
41 pr_err("Can't handle BH interrupt\n");
42 return IRQ_HANDLED;
43 }
44
45 wilc_handle_isr(wilc);
46
47 return IRQ_HANDLED;
48}
49
50static int init_irq(struct net_device *dev)
51{
52 struct wilc_vif *vif = netdev_priv(dev);
53 struct wilc *wl = vif->wilc;
54 int ret;
55
56 ret = request_threaded_irq(wl->dev_irq_num, isr_uh_routine,
57 isr_bh_routine,
58 IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
59 "WILC_IRQ", wl);
60 if (ret) {
61 netdev_err(dev, "Failed to request IRQ [%d]\n", ret);
62 return ret;
63 }
64 netdev_dbg(dev, "IRQ request succeeded IRQ-NUM= %d\n", wl->dev_irq_num);
65
66 return 0;
67}
68
69static void deinit_irq(struct net_device *dev)
70{
71 struct wilc_vif *vif = netdev_priv(dev);
72 struct wilc *wilc = vif->wilc;
73
74 /* Deinitialize IRQ */
75 if (wilc->dev_irq_num)
76 free_irq(wilc->dev_irq_num, wilc);
77}
78
79void wilc_mac_indicate(struct wilc *wilc)
80{
81 s8 status;
82
83 wilc_wlan_cfg_get_val(wilc, WID_STATUS, &status, 1);
84 if (wilc->mac_status == WILC_MAC_STATUS_INIT) {
85 wilc->mac_status = status;
86 complete(&wilc->sync_event);
87 } else {
88 wilc->mac_status = status;
89 }
90}
91
92static struct net_device *get_if_handler(struct wilc *wilc, u8 *mac_header)
93{
94 struct net_device *ndev = NULL;
95 struct wilc_vif *vif;
96 struct ieee80211_hdr *h = (struct ieee80211_hdr *)mac_header;
97
98 list_for_each_entry_rcu(vif, &wilc->vif_list, list) {
99 if (vif->mode == WILC_STATION_MODE)
100 if (ether_addr_equal_unaligned(h->addr2, vif->bssid)) {
101 ndev = vif->ndev;
102 goto out;
103 }
104 if (vif->mode == WILC_AP_MODE)
105 if (ether_addr_equal_unaligned(h->addr1, vif->bssid)) {
106 ndev = vif->ndev;
107 goto out;
108 }
109 }
110out:
111 return ndev;
112}
113
114void wilc_wlan_set_bssid(struct net_device *wilc_netdev, u8 *bssid, u8 mode)
115{
116 struct wilc_vif *vif = netdev_priv(wilc_netdev);
117
118 if (bssid)
119 ether_addr_copy(vif->bssid, bssid);
120 else
121 eth_zero_addr(vif->bssid);
122
123 vif->mode = mode;
124}
125
126int wilc_wlan_get_num_conn_ifcs(struct wilc *wilc)
127{
128 int srcu_idx;
129 u8 ret_val = 0;
130 struct wilc_vif *vif;
131
132 srcu_idx = srcu_read_lock(&wilc->srcu);
133 list_for_each_entry_rcu(vif, &wilc->vif_list, list) {
134 if (!is_zero_ether_addr(vif->bssid))
135 ret_val++;
136 }
137 srcu_read_unlock(&wilc->srcu, srcu_idx);
138 return ret_val;
139}
140
141static int wilc_txq_task(void *vp)
142{
143 int ret;
144 u32 txq_count;
145 struct wilc *wl = vp;
146
147 complete(&wl->txq_thread_started);
148 while (1) {
149 wait_for_completion(&wl->txq_event);
150
151 if (wl->close) {
152 complete(&wl->txq_thread_started);
153
154 while (!kthread_should_stop())
155 schedule();
156 break;
157 }
158 do {
159 ret = wilc_wlan_handle_txq(wl, &txq_count);
160 if (txq_count < FLOW_CONTROL_LOWER_THRESHOLD) {
161 int srcu_idx;
162 struct wilc_vif *ifc;
163
164 srcu_idx = srcu_read_lock(&wl->srcu);
165 list_for_each_entry_rcu(ifc, &wl->vif_list,
166 list) {
167 if (ifc->mac_opened && ifc->ndev)
168 netif_wake_queue(ifc->ndev);
169 }
170 srcu_read_unlock(&wl->srcu, srcu_idx);
171 }
172 } while (ret == WILC_VMM_ENTRY_FULL_RETRY && !wl->close);
173 }
174 return 0;
175}
176
177static int wilc_wlan_get_firmware(struct net_device *dev)
178{
179 struct wilc_vif *vif = netdev_priv(dev);
180 struct wilc *wilc = vif->wilc;
181 int chip_id;
182 const struct firmware *wilc_fw;
183 int ret;
184
185 chip_id = wilc_get_chipid(wilc, false);
186
187 netdev_info(dev, "ChipID [%x] loading firmware [%s]\n", chip_id,
188 WILC1000_FW(WILC1000_API_VER));
189
190 ret = request_firmware(&wilc_fw, WILC1000_FW(WILC1000_API_VER),
191 wilc->dev);
192 if (ret != 0) {
193 netdev_err(dev, "%s - firmware not available\n",
194 WILC1000_FW(WILC1000_API_VER));
195 return -EINVAL;
196 }
197 wilc->firmware = wilc_fw;
198
199 return 0;
200}
201
202static int wilc_start_firmware(struct net_device *dev)
203{
204 struct wilc_vif *vif = netdev_priv(dev);
205 struct wilc *wilc = vif->wilc;
206 int ret = 0;
207
208 ret = wilc_wlan_start(wilc);
209 if (ret)
210 return ret;
211
212 if (!wait_for_completion_timeout(&wilc->sync_event,
213 msecs_to_jiffies(5000)))
214 return -ETIME;
215
216 return 0;
217}
218
219static int wilc1000_firmware_download(struct net_device *dev)
220{
221 struct wilc_vif *vif = netdev_priv(dev);
222 struct wilc *wilc = vif->wilc;
223 int ret = 0;
224
225 if (!wilc->firmware) {
226 netdev_err(dev, "Firmware buffer is NULL\n");
227 return -ENOBUFS;
228 }
229
230 ret = wilc_wlan_firmware_download(wilc, wilc->firmware->data,
231 wilc->firmware->size);
232 if (ret)
233 return ret;
234
235 release_firmware(wilc->firmware);
236 wilc->firmware = NULL;
237
238 netdev_dbg(dev, "Download Succeeded\n");
239
240 return 0;
241}
242
243static int wilc_init_fw_config(struct net_device *dev, struct wilc_vif *vif)
244{
245 struct wilc_priv *priv = &vif->priv;
246 struct host_if_drv *hif_drv;
247 u8 b;
248 u16 hw;
249 u32 w;
250
251 netdev_dbg(dev, "Start configuring Firmware\n");
252 hif_drv = (struct host_if_drv *)priv->hif_drv;
253 netdev_dbg(dev, "Host = %p\n", hif_drv);
254
255 w = vif->iftype;
256 cpu_to_le32s(&w);
257 if (!wilc_wlan_cfg_set(vif, 1, WID_SET_OPERATION_MODE, (u8 *)&w, 4,
258 0, 0))
259 goto fail;
260
261 b = WILC_FW_BSS_TYPE_INFRA;
262 if (!wilc_wlan_cfg_set(vif, 0, WID_BSS_TYPE, &b, 1, 0, 0))
263 goto fail;
264
265 b = WILC_FW_TX_RATE_AUTO;
266 if (!wilc_wlan_cfg_set(vif, 0, WID_CURRENT_TX_RATE, &b, 1, 0, 0))
267 goto fail;
268
269 b = WILC_FW_OPER_MODE_G_MIXED_11B_2;
270 if (!wilc_wlan_cfg_set(vif, 0, WID_11G_OPERATING_MODE, &b, 1, 0, 0))
271 goto fail;
272
273 b = WILC_FW_PREAMBLE_SHORT;
274 if (!wilc_wlan_cfg_set(vif, 0, WID_PREAMBLE, &b, 1, 0, 0))
275 goto fail;
276
277 b = WILC_FW_11N_PROT_AUTO;
278 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_PROT_MECH, &b, 1, 0, 0))
279 goto fail;
280
281 b = WILC_FW_ACTIVE_SCAN;
282 if (!wilc_wlan_cfg_set(vif, 0, WID_SCAN_TYPE, &b, 1, 0, 0))
283 goto fail;
284
285 b = WILC_FW_SITE_SURVEY_OFF;
286 if (!wilc_wlan_cfg_set(vif, 0, WID_SITE_SURVEY, &b, 1, 0, 0))
287 goto fail;
288
289 hw = 0xffff;
290 cpu_to_le16s(&hw);
291 if (!wilc_wlan_cfg_set(vif, 0, WID_RTS_THRESHOLD, (u8 *)&hw, 2, 0, 0))
292 goto fail;
293
294 hw = 2346;
295 cpu_to_le16s(&hw);
296 if (!wilc_wlan_cfg_set(vif, 0, WID_FRAG_THRESHOLD, (u8 *)&hw, 2, 0, 0))
297 goto fail;
298
299 b = 0;
300 if (!wilc_wlan_cfg_set(vif, 0, WID_BCAST_SSID, &b, 1, 0, 0))
301 goto fail;
302
303 b = 1;
304 if (!wilc_wlan_cfg_set(vif, 0, WID_QOS_ENABLE, &b, 1, 0, 0))
305 goto fail;
306
307 b = WILC_FW_NO_POWERSAVE;
308 if (!wilc_wlan_cfg_set(vif, 0, WID_POWER_MANAGEMENT, &b, 1, 0, 0))
309 goto fail;
310
311 b = WILC_FW_SEC_NO;
312 if (!wilc_wlan_cfg_set(vif, 0, WID_11I_MODE, &b, 1, 0, 0))
313 goto fail;
314
315 b = WILC_FW_AUTH_OPEN_SYSTEM;
316 if (!wilc_wlan_cfg_set(vif, 0, WID_AUTH_TYPE, &b, 1, 0, 0))
317 goto fail;
318
319 b = 3;
320 if (!wilc_wlan_cfg_set(vif, 0, WID_LISTEN_INTERVAL, &b, 1, 0, 0))
321 goto fail;
322
323 b = 3;
324 if (!wilc_wlan_cfg_set(vif, 0, WID_DTIM_PERIOD, &b, 1, 0, 0))
325 goto fail;
326
327 b = WILC_FW_ACK_POLICY_NORMAL;
328 if (!wilc_wlan_cfg_set(vif, 0, WID_ACK_POLICY, &b, 1, 0, 0))
329 goto fail;
330
331 b = 0;
332 if (!wilc_wlan_cfg_set(vif, 0, WID_USER_CONTROL_ON_TX_POWER, &b, 1,
333 0, 0))
334 goto fail;
335
336 b = 48;
337 if (!wilc_wlan_cfg_set(vif, 0, WID_TX_POWER_LEVEL_11A, &b, 1, 0, 0))
338 goto fail;
339
340 b = 28;
341 if (!wilc_wlan_cfg_set(vif, 0, WID_TX_POWER_LEVEL_11B, &b, 1, 0, 0))
342 goto fail;
343
344 hw = 100;
345 cpu_to_le16s(&hw);
346 if (!wilc_wlan_cfg_set(vif, 0, WID_BEACON_INTERVAL, (u8 *)&hw, 2, 0, 0))
347 goto fail;
348
349 b = WILC_FW_REKEY_POLICY_DISABLE;
350 if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_POLICY, &b, 1, 0, 0))
351 goto fail;
352
353 w = 84600;
354 cpu_to_le32s(&w);
355 if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_PERIOD, (u8 *)&w, 4, 0, 0))
356 goto fail;
357
358 w = 500;
359 cpu_to_le32s(&w);
360 if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_PACKET_COUNT, (u8 *)&w, 4, 0,
361 0))
362 goto fail;
363
364 b = 1;
365 if (!wilc_wlan_cfg_set(vif, 0, WID_SHORT_SLOT_ALLOWED, &b, 1, 0,
366 0))
367 goto fail;
368
369 b = WILC_FW_ERP_PROT_SELF_CTS;
370 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_ERP_PROT_TYPE, &b, 1, 0, 0))
371 goto fail;
372
373 b = 1;
374 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_ENABLE, &b, 1, 0, 0))
375 goto fail;
376
377 b = WILC_FW_11N_OP_MODE_HT_MIXED;
378 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_OPERATING_MODE, &b, 1, 0, 0))
379 goto fail;
380
381 b = 1;
382 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_TXOP_PROT_DISABLE, &b, 1, 0, 0))
383 goto fail;
384
385 b = WILC_FW_OBBS_NONHT_DETECT_PROTECT_REPORT;
386 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_OBSS_NONHT_DETECTION, &b, 1,
387 0, 0))
388 goto fail;
389
390 b = WILC_FW_HT_PROT_RTS_CTS_NONHT;
391 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_HT_PROT_TYPE, &b, 1, 0, 0))
392 goto fail;
393
394 b = 0;
395 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_RIFS_PROT_ENABLE, &b, 1, 0,
396 0))
397 goto fail;
398
399 b = 7;
400 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_CURRENT_TX_MCS, &b, 1, 0, 0))
401 goto fail;
402
403 b = 1;
404 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_IMMEDIATE_BA_ENABLED, &b, 1,
405 1, 1))
406 goto fail;
407
408 return 0;
409
410fail:
411 return -EINVAL;
412}
413
414static void wlan_deinitialize_threads(struct net_device *dev)
415{
416 struct wilc_vif *vif = netdev_priv(dev);
417 struct wilc *wl = vif->wilc;
418
419 wl->close = 1;
420
421 complete(&wl->txq_event);
422
423 if (wl->txq_thread) {
424 kthread_stop(wl->txq_thread);
425 wl->txq_thread = NULL;
426 }
427}
428
429static void wilc_wlan_deinitialize(struct net_device *dev)
430{
431 struct wilc_vif *vif = netdev_priv(dev);
432 struct wilc *wl = vif->wilc;
433
434 if (!wl) {
435 netdev_err(dev, "wl is NULL\n");
436 return;
437 }
438
439 if (wl->initialized) {
440 netdev_info(dev, "Deinitializing wilc1000...\n");
441
442 if (!wl->dev_irq_num &&
443 wl->hif_func->disable_interrupt) {
444 mutex_lock(&wl->hif_cs);
445 wl->hif_func->disable_interrupt(wl);
446 mutex_unlock(&wl->hif_cs);
447 }
448 complete(&wl->txq_event);
449
450 wlan_deinitialize_threads(dev);
451 deinit_irq(dev);
452
453 wilc_wlan_stop(wl, vif);
454 wilc_wlan_cleanup(dev);
455
456 wl->initialized = false;
457
458 netdev_dbg(dev, "wilc1000 deinitialization Done\n");
459 } else {
460 netdev_dbg(dev, "wilc1000 is not initialized\n");
461 }
462}
463
464static int wlan_initialize_threads(struct net_device *dev)
465{
466 struct wilc_vif *vif = netdev_priv(dev);
467 struct wilc *wilc = vif->wilc;
468
469 wilc->txq_thread = kthread_run(wilc_txq_task, (void *)wilc,
470 "K_TXQ_TASK");
471 if (IS_ERR(wilc->txq_thread)) {
472 netdev_err(dev, "couldn't create TXQ thread\n");
473 wilc->close = 0;
474 return PTR_ERR(wilc->txq_thread);
475 }
476 wait_for_completion(&wilc->txq_thread_started);
477
478 return 0;
479}
480
481static int wilc_wlan_initialize(struct net_device *dev, struct wilc_vif *vif)
482{
483 int ret = 0;
484 struct wilc *wl = vif->wilc;
485
486 if (!wl->initialized) {
487 wl->mac_status = WILC_MAC_STATUS_INIT;
488 wl->close = 0;
489
490 ret = wilc_wlan_init(dev);
491 if (ret)
492 return ret;
493
494 ret = wlan_initialize_threads(dev);
495 if (ret)
496 goto fail_wilc_wlan;
497
498 if (wl->dev_irq_num && init_irq(dev)) {
499 ret = -EIO;
500 goto fail_threads;
501 }
502
503 if (!wl->dev_irq_num &&
504 wl->hif_func->enable_interrupt &&
505 wl->hif_func->enable_interrupt(wl)) {
506 ret = -EIO;
507 goto fail_irq_init;
508 }
509
510 ret = wilc_wlan_get_firmware(dev);
511 if (ret)
512 goto fail_irq_enable;
513
514 ret = wilc1000_firmware_download(dev);
515 if (ret)
516 goto fail_irq_enable;
517
518 ret = wilc_start_firmware(dev);
519 if (ret)
520 goto fail_irq_enable;
521
522 if (wilc_wlan_cfg_get(vif, 1, WID_FIRMWARE_VERSION, 1, 0)) {
523 int size;
524 char firmware_ver[20];
525
526 size = wilc_wlan_cfg_get_val(wl, WID_FIRMWARE_VERSION,
527 firmware_ver,
528 sizeof(firmware_ver));
529 firmware_ver[size] = '\0';
530 netdev_dbg(dev, "Firmware Ver = %s\n", firmware_ver);
531 }
532
533 ret = wilc_init_fw_config(dev, vif);
534 if (ret) {
535 netdev_err(dev, "Failed to configure firmware\n");
536 goto fail_fw_start;
537 }
538 wl->initialized = true;
539 return 0;
540
541fail_fw_start:
542 wilc_wlan_stop(wl, vif);
543
544fail_irq_enable:
545 if (!wl->dev_irq_num &&
546 wl->hif_func->disable_interrupt)
547 wl->hif_func->disable_interrupt(wl);
548fail_irq_init:
549 if (wl->dev_irq_num)
550 deinit_irq(dev);
551fail_threads:
552 wlan_deinitialize_threads(dev);
553fail_wilc_wlan:
554 wilc_wlan_cleanup(dev);
555 netdev_err(dev, "WLAN initialization FAILED\n");
556 } else {
557 netdev_dbg(dev, "wilc1000 already initialized\n");
558 }
559 return ret;
560}
561
562static int mac_init_fn(struct net_device *ndev)
563{
564 netif_start_queue(ndev);
565 netif_stop_queue(ndev);
566
567 return 0;
568}
569
570static int wilc_mac_open(struct net_device *ndev)
571{
572 struct wilc_vif *vif = netdev_priv(ndev);
573 struct wilc *wl = vif->wilc;
574 int ret = 0;
575 struct mgmt_frame_regs mgmt_regs = {};
576
577 if (!wl || !wl->dev) {
578 netdev_err(ndev, "device not ready\n");
579 return -ENODEV;
580 }
581
582 netdev_dbg(ndev, "MAC OPEN[%p]\n", ndev);
583
584 ret = wilc_init_host_int(ndev);
585 if (ret)
586 return ret;
587
588 ret = wilc_wlan_initialize(ndev, vif);
589 if (ret) {
590 wilc_deinit_host_int(ndev);
591 return ret;
592 }
593
594 wilc_set_operation_mode(vif, wilc_get_vif_idx(vif), vif->iftype,
595 vif->idx);
596
597 if (is_valid_ether_addr(ndev->dev_addr))
598 wilc_set_mac_address(vif, ndev->dev_addr);
599 else
600 wilc_get_mac_address(vif, ndev->dev_addr);
601 netdev_dbg(ndev, "Mac address: %pM\n", ndev->dev_addr);
602
603 if (!is_valid_ether_addr(ndev->dev_addr)) {
604 netdev_err(ndev, "Wrong MAC address\n");
605 wilc_deinit_host_int(ndev);
606 wilc_wlan_deinitialize(ndev);
607 return -EINVAL;
608 }
609
610 mgmt_regs.interface_stypes = vif->mgmt_reg_stypes;
611 /* so we detect a change */
612 vif->mgmt_reg_stypes = 0;
613 wilc_update_mgmt_frame_registrations(vif->ndev->ieee80211_ptr->wiphy,
614 vif->ndev->ieee80211_ptr,
615 &mgmt_regs);
616 netif_wake_queue(ndev);
617 wl->open_ifcs++;
618 vif->mac_opened = 1;
619 return 0;
620}
621
622static struct net_device_stats *mac_stats(struct net_device *dev)
623{
624 struct wilc_vif *vif = netdev_priv(dev);
625
626 return &vif->netstats;
627}
628
629static int wilc_set_mac_addr(struct net_device *dev, void *p)
630{
631 int result;
632 struct wilc_vif *vif = netdev_priv(dev);
633 struct wilc *wilc = vif->wilc;
634 struct sockaddr *addr = (struct sockaddr *)p;
635 unsigned char mac_addr[ETH_ALEN];
636 struct wilc_vif *tmp_vif;
637 int srcu_idx;
638
639 if (!is_valid_ether_addr(addr->sa_data))
640 return -EADDRNOTAVAIL;
641
642 if (!vif->mac_opened) {
643 eth_commit_mac_addr_change(dev, p);
644 return 0;
645 }
646
647 /* Verify MAC Address is not already in use: */
648
649 srcu_idx = srcu_read_lock(&wilc->srcu);
650 list_for_each_entry_rcu(tmp_vif, &wilc->vif_list, list) {
651 wilc_get_mac_address(tmp_vif, mac_addr);
652 if (ether_addr_equal(addr->sa_data, mac_addr)) {
653 if (vif != tmp_vif) {
654 srcu_read_unlock(&wilc->srcu, srcu_idx);
655 return -EADDRNOTAVAIL;
656 }
657 srcu_read_unlock(&wilc->srcu, srcu_idx);
658 return 0;
659 }
660 }
661 srcu_read_unlock(&wilc->srcu, srcu_idx);
662
663 result = wilc_set_mac_address(vif, (u8 *)addr->sa_data);
664 if (result)
665 return result;
666
667 eth_commit_mac_addr_change(dev, p);
668 return result;
669}
670
671static void wilc_set_multicast_list(struct net_device *dev)
672{
673 struct netdev_hw_addr *ha;
674 struct wilc_vif *vif = netdev_priv(dev);
675 int i;
676 u8 *mc_list;
677 u8 *cur_mc;
678
679 if (dev->flags & IFF_PROMISC)
680 return;
681
682 if (dev->flags & IFF_ALLMULTI ||
683 dev->mc.count > WILC_MULTICAST_TABLE_SIZE) {
684 wilc_setup_multicast_filter(vif, 0, 0, NULL);
685 return;
686 }
687
688 if (dev->mc.count == 0) {
689 wilc_setup_multicast_filter(vif, 1, 0, NULL);
690 return;
691 }
692
693 mc_list = kmalloc_array(dev->mc.count, ETH_ALEN, GFP_ATOMIC);
694 if (!mc_list)
695 return;
696
697 cur_mc = mc_list;
698 i = 0;
699 netdev_for_each_mc_addr(ha, dev) {
700 memcpy(cur_mc, ha->addr, ETH_ALEN);
701 netdev_dbg(dev, "Entry[%d]: %pM\n", i, cur_mc);
702 i++;
703 cur_mc += ETH_ALEN;
704 }
705
706 if (wilc_setup_multicast_filter(vif, 1, dev->mc.count, mc_list))
707 kfree(mc_list);
708}
709
710static void wilc_tx_complete(void *priv, int status)
711{
712 struct tx_complete_data *pv_data = priv;
713
714 dev_kfree_skb(pv_data->skb);
715 kfree(pv_data);
716}
717
718netdev_tx_t wilc_mac_xmit(struct sk_buff *skb, struct net_device *ndev)
719{
720 struct wilc_vif *vif = netdev_priv(ndev);
721 struct wilc *wilc = vif->wilc;
722 struct tx_complete_data *tx_data = NULL;
723 int queue_count;
724
725 if (skb->dev != ndev) {
726 netdev_err(ndev, "Packet not destined to this device\n");
727 return NETDEV_TX_OK;
728 }
729
730 tx_data = kmalloc(sizeof(*tx_data), GFP_ATOMIC);
731 if (!tx_data) {
732 dev_kfree_skb(skb);
733 netif_wake_queue(ndev);
734 return NETDEV_TX_OK;
735 }
736
737 tx_data->buff = skb->data;
738 tx_data->size = skb->len;
739 tx_data->skb = skb;
740
741 vif->netstats.tx_packets++;
742 vif->netstats.tx_bytes += tx_data->size;
743 queue_count = wilc_wlan_txq_add_net_pkt(ndev, tx_data,
744 tx_data->buff, tx_data->size,
745 wilc_tx_complete);
746
747 if (queue_count > FLOW_CONTROL_UPPER_THRESHOLD) {
748 int srcu_idx;
749 struct wilc_vif *vif;
750
751 srcu_idx = srcu_read_lock(&wilc->srcu);
752 list_for_each_entry_rcu(vif, &wilc->vif_list, list) {
753 if (vif->mac_opened)
754 netif_stop_queue(vif->ndev);
755 }
756 srcu_read_unlock(&wilc->srcu, srcu_idx);
757 }
758
759 return NETDEV_TX_OK;
760}
761
762static int wilc_mac_close(struct net_device *ndev)
763{
764 struct wilc_vif *vif = netdev_priv(ndev);
765 struct wilc *wl = vif->wilc;
766
767 netdev_dbg(ndev, "Mac close\n");
768
769 if (wl->open_ifcs > 0)
770 wl->open_ifcs--;
771 else
772 return 0;
773
774 if (vif->ndev) {
775 netif_stop_queue(vif->ndev);
776
777 wilc_deinit_host_int(vif->ndev);
778 }
779
780 if (wl->open_ifcs == 0) {
781 netdev_dbg(ndev, "Deinitializing wilc1000\n");
782 wl->close = 1;
783 wilc_wlan_deinitialize(ndev);
784 }
785
786 vif->mac_opened = 0;
787
788 return 0;
789}
790
791void wilc_frmw_to_host(struct wilc *wilc, u8 *buff, u32 size,
792 u32 pkt_offset)
793{
794 unsigned int frame_len = 0;
795 int stats;
796 unsigned char *buff_to_send = NULL;
797 struct sk_buff *skb;
798 struct net_device *wilc_netdev;
799 struct wilc_vif *vif;
800
801 if (!wilc)
802 return;
803
804 wilc_netdev = get_if_handler(wilc, buff);
805 if (!wilc_netdev)
806 return;
807
808 buff += pkt_offset;
809 vif = netdev_priv(wilc_netdev);
810
811 if (size > 0) {
812 frame_len = size;
813 buff_to_send = buff;
814
815 skb = dev_alloc_skb(frame_len);
816 if (!skb)
817 return;
818
819 skb->dev = wilc_netdev;
820
821 skb_put_data(skb, buff_to_send, frame_len);
822
823 skb->protocol = eth_type_trans(skb, wilc_netdev);
824 vif->netstats.rx_packets++;
825 vif->netstats.rx_bytes += frame_len;
826 skb->ip_summed = CHECKSUM_UNNECESSARY;
827 stats = netif_rx(skb);
828 netdev_dbg(wilc_netdev, "netif_rx ret value is: %d\n", stats);
829 }
830}
831
832void wilc_wfi_mgmt_rx(struct wilc *wilc, u8 *buff, u32 size)
833{
834 int srcu_idx;
835 struct wilc_vif *vif;
836
837 srcu_idx = srcu_read_lock(&wilc->srcu);
838 list_for_each_entry_rcu(vif, &wilc->vif_list, list) {
839 u16 type = le16_to_cpup((__le16 *)buff);
840 u32 type_bit = BIT(type >> 4);
841
842 if (vif->priv.p2p_listen_state &&
843 vif->mgmt_reg_stypes & type_bit)
844 wilc_wfi_p2p_rx(vif, buff, size);
845
846 if (vif->monitor_flag)
847 wilc_wfi_monitor_rx(wilc->monitor_dev, buff, size);
848 }
849 srcu_read_unlock(&wilc->srcu, srcu_idx);
850}
851
852static const struct net_device_ops wilc_netdev_ops = {
853 .ndo_init = mac_init_fn,
854 .ndo_open = wilc_mac_open,
855 .ndo_stop = wilc_mac_close,
856 .ndo_set_mac_address = wilc_set_mac_addr,
857 .ndo_start_xmit = wilc_mac_xmit,
858 .ndo_get_stats = mac_stats,
859 .ndo_set_rx_mode = wilc_set_multicast_list,
860};
861
862void wilc_netdev_cleanup(struct wilc *wilc)
863{
864 struct wilc_vif *vif;
865 int srcu_idx, ifc_cnt = 0;
866
867 if (!wilc)
868 return;
869
870 if (wilc->firmware) {
871 release_firmware(wilc->firmware);
872 wilc->firmware = NULL;
873 }
874
875 srcu_idx = srcu_read_lock(&wilc->srcu);
876 list_for_each_entry_rcu(vif, &wilc->vif_list, list) {
877 if (vif->ndev)
878 unregister_netdev(vif->ndev);
879 }
880 srcu_read_unlock(&wilc->srcu, srcu_idx);
881
882 wilc_wfi_deinit_mon_interface(wilc, false);
883 flush_workqueue(wilc->hif_workqueue);
884 destroy_workqueue(wilc->hif_workqueue);
885
886 while (ifc_cnt < WILC_NUM_CONCURRENT_IFC) {
887 mutex_lock(&wilc->vif_mutex);
888 if (wilc->vif_num <= 0) {
889 mutex_unlock(&wilc->vif_mutex);
890 break;
891 }
892 vif = wilc_get_wl_to_vif(wilc);
893 if (!IS_ERR(vif))
894 list_del_rcu(&vif->list);
895
896 wilc->vif_num--;
897 mutex_unlock(&wilc->vif_mutex);
898 synchronize_srcu(&wilc->srcu);
899 ifc_cnt++;
900 }
901
902 wilc_wlan_cfg_deinit(wilc);
903 wlan_deinit_locks(wilc);
904 kfree(wilc->bus_data);
905 wiphy_unregister(wilc->wiphy);
906 wiphy_free(wilc->wiphy);
907}
908EXPORT_SYMBOL_GPL(wilc_netdev_cleanup);
909
910static u8 wilc_get_available_idx(struct wilc *wl)
911{
912 int idx = 0;
913 struct wilc_vif *vif;
914 int srcu_idx;
915
916 srcu_idx = srcu_read_lock(&wl->srcu);
917 list_for_each_entry_rcu(vif, &wl->vif_list, list) {
918 if (vif->idx == 0)
919 idx = 1;
920 else
921 idx = 0;
922 }
923 srcu_read_unlock(&wl->srcu, srcu_idx);
924 return idx;
925}
926
927struct wilc_vif *wilc_netdev_ifc_init(struct wilc *wl, const char *name,
928 int vif_type, enum nl80211_iftype type,
929 bool rtnl_locked)
930{
931 struct net_device *ndev;
932 struct wilc_vif *vif;
933 int ret;
934
935 ndev = alloc_etherdev(sizeof(*vif));
936 if (!ndev)
937 return ERR_PTR(-ENOMEM);
938
939 vif = netdev_priv(ndev);
940 ndev->ieee80211_ptr = &vif->priv.wdev;
941 strcpy(ndev->name, name);
942 vif->wilc = wl;
943 vif->ndev = ndev;
944 ndev->ml_priv = vif;
945
946 ndev->netdev_ops = &wilc_netdev_ops;
947
948 SET_NETDEV_DEV(ndev, wiphy_dev(wl->wiphy));
949
950 vif->priv.wdev.wiphy = wl->wiphy;
951 vif->priv.wdev.netdev = ndev;
952 vif->priv.wdev.iftype = type;
953 vif->priv.dev = ndev;
954
955 if (rtnl_locked)
956 ret = cfg80211_register_netdevice(ndev);
957 else
958 ret = register_netdev(ndev);
959
960 if (ret) {
961 free_netdev(ndev);
962 return ERR_PTR(-EFAULT);
963 }
964
965 ndev->needs_free_netdev = true;
966 vif->iftype = vif_type;
967 vif->idx = wilc_get_available_idx(wl);
968 vif->mac_opened = 0;
969 mutex_lock(&wl->vif_mutex);
970 list_add_tail_rcu(&vif->list, &wl->vif_list);
971 wl->vif_num += 1;
972 mutex_unlock(&wl->vif_mutex);
973 synchronize_srcu(&wl->srcu);
974
975 return vif;
976}
977
978MODULE_LICENSE("GPL");
979MODULE_FIRMWARE(WILC1000_FW(WILC1000_API_VER));