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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#define WILC_MAX_FW_VERSION_STR_SIZE 50
18
19/* latest API version supported */
20#define WILC1000_API_VER 1
21
22#define WILC1000_FW_PREFIX "atmel/wilc1000_wifi_firmware-"
23#define __WILC1000_FW(api) WILC1000_FW_PREFIX #api ".bin"
24#define WILC1000_FW(api) __WILC1000_FW(api)
25
26static irqreturn_t isr_uh_routine(int irq, void *user_data)
27{
28 struct wilc *wilc = user_data;
29
30 if (wilc->close) {
31 pr_err("Can't handle UH interrupt\n");
32 return IRQ_HANDLED;
33 }
34 return IRQ_WAKE_THREAD;
35}
36
37static irqreturn_t isr_bh_routine(int irq, void *userdata)
38{
39 struct wilc *wilc = userdata;
40
41 if (wilc->close) {
42 pr_err("Can't handle BH interrupt\n");
43 return IRQ_HANDLED;
44 }
45
46 wilc_handle_isr(wilc);
47
48 return IRQ_HANDLED;
49}
50
51static int init_irq(struct net_device *dev)
52{
53 struct wilc_vif *vif = netdev_priv(dev);
54 struct wilc *wl = vif->wilc;
55 int ret;
56
57 ret = request_threaded_irq(wl->dev_irq_num, isr_uh_routine,
58 isr_bh_routine,
59 IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
60 dev->name, wl);
61 if (ret) {
62 netdev_err(dev, "Failed to request IRQ [%d]\n", ret);
63 return ret;
64 }
65 netdev_dbg(dev, "IRQ request succeeded IRQ-NUM= %d\n", wl->dev_irq_num);
66
67 return 0;
68}
69
70static void deinit_irq(struct net_device *dev)
71{
72 struct wilc_vif *vif = netdev_priv(dev);
73 struct wilc *wilc = vif->wilc;
74
75 /* Deinitialize IRQ */
76 if (wilc->dev_irq_num)
77 free_irq(wilc->dev_irq_num, wilc);
78}
79
80void wilc_mac_indicate(struct wilc *wilc)
81{
82 s8 status;
83
84 wilc_wlan_cfg_get_val(wilc, WID_STATUS, &status, 1);
85 if (wilc->mac_status == WILC_MAC_STATUS_INIT) {
86 wilc->mac_status = status;
87 complete(&wilc->sync_event);
88 } else {
89 wilc->mac_status = status;
90 }
91}
92
93static struct net_device *get_if_handler(struct wilc *wilc, u8 *mac_header)
94{
95 struct net_device *ndev = NULL;
96 struct wilc_vif *vif;
97 struct ieee80211_hdr *h = (struct ieee80211_hdr *)mac_header;
98
99 list_for_each_entry_rcu(vif, &wilc->vif_list, list) {
100 if (vif->iftype == WILC_STATION_MODE)
101 if (ether_addr_equal_unaligned(h->addr2, vif->bssid)) {
102 ndev = vif->ndev;
103 goto out;
104 }
105 if (vif->iftype == WILC_AP_MODE)
106 if (ether_addr_equal_unaligned(h->addr1, vif->bssid)) {
107 ndev = vif->ndev;
108 goto out;
109 }
110 }
111out:
112 return ndev;
113}
114
115void wilc_wlan_set_bssid(struct net_device *wilc_netdev, const u8 *bssid,
116 u8 mode)
117{
118 struct wilc_vif *vif = netdev_priv(wilc_netdev);
119
120 if (bssid)
121 ether_addr_copy(vif->bssid, bssid);
122 else
123 eth_zero_addr(vif->bssid);
124
125 vif->iftype = mode;
126}
127
128int wilc_wlan_get_num_conn_ifcs(struct wilc *wilc)
129{
130 int srcu_idx;
131 u8 ret_val = 0;
132 struct wilc_vif *vif;
133
134 srcu_idx = srcu_read_lock(&wilc->srcu);
135 list_for_each_entry_rcu(vif, &wilc->vif_list, list) {
136 if (!is_zero_ether_addr(vif->bssid))
137 ret_val++;
138 }
139 srcu_read_unlock(&wilc->srcu, srcu_idx);
140 return ret_val;
141}
142
143static int wilc_txq_task(void *vp)
144{
145 int ret;
146 u32 txq_count;
147 struct wilc *wl = vp;
148
149 complete(&wl->txq_thread_started);
150 while (1) {
151 wait_for_completion(&wl->txq_event);
152
153 if (wl->close) {
154 complete(&wl->txq_thread_started);
155
156 while (!kthread_should_stop())
157 schedule();
158 break;
159 }
160 do {
161 ret = wilc_wlan_handle_txq(wl, &txq_count);
162 if (txq_count < FLOW_CONTROL_LOWER_THRESHOLD) {
163 int srcu_idx;
164 struct wilc_vif *ifc;
165
166 srcu_idx = srcu_read_lock(&wl->srcu);
167 list_for_each_entry_rcu(ifc, &wl->vif_list,
168 list) {
169 if (ifc->mac_opened && ifc->ndev)
170 netif_wake_queue(ifc->ndev);
171 }
172 srcu_read_unlock(&wl->srcu, srcu_idx);
173 }
174 } while (ret == WILC_VMM_ENTRY_FULL_RETRY && !wl->close);
175 }
176 return 0;
177}
178
179static int wilc_wlan_get_firmware(struct net_device *dev)
180{
181 struct wilc_vif *vif = netdev_priv(dev);
182 struct wilc *wilc = vif->wilc;
183 int chip_id;
184 const struct firmware *wilc_fw;
185 int ret;
186
187 chip_id = wilc_get_chipid(wilc, false);
188
189 netdev_info(dev, "ChipID [%x] loading firmware [%s]\n", chip_id,
190 WILC1000_FW(WILC1000_API_VER));
191
192 ret = request_firmware(&wilc_fw, WILC1000_FW(WILC1000_API_VER),
193 wilc->dev);
194 if (ret != 0) {
195 netdev_err(dev, "%s - firmware not available\n",
196 WILC1000_FW(WILC1000_API_VER));
197 return -EINVAL;
198 }
199 wilc->firmware = wilc_fw;
200
201 return 0;
202}
203
204static int wilc_start_firmware(struct net_device *dev)
205{
206 struct wilc_vif *vif = netdev_priv(dev);
207 struct wilc *wilc = vif->wilc;
208 int ret = 0;
209
210 ret = wilc_wlan_start(wilc);
211 if (ret)
212 return ret;
213
214 if (!wait_for_completion_timeout(&wilc->sync_event,
215 msecs_to_jiffies(5000)))
216 return -ETIME;
217
218 return 0;
219}
220
221static int wilc1000_firmware_download(struct net_device *dev)
222{
223 struct wilc_vif *vif = netdev_priv(dev);
224 struct wilc *wilc = vif->wilc;
225 int ret = 0;
226
227 if (!wilc->firmware) {
228 netdev_err(dev, "Firmware buffer is NULL\n");
229 return -ENOBUFS;
230 }
231
232 ret = wilc_wlan_firmware_download(wilc, wilc->firmware->data,
233 wilc->firmware->size);
234 if (ret)
235 return ret;
236
237 release_firmware(wilc->firmware);
238 wilc->firmware = NULL;
239
240 netdev_dbg(dev, "Download Succeeded\n");
241
242 return 0;
243}
244
245static int wilc_init_fw_config(struct net_device *dev, struct wilc_vif *vif)
246{
247 struct wilc_priv *priv = &vif->priv;
248 struct host_if_drv *hif_drv;
249 u8 b;
250 u16 hw;
251 u32 w;
252
253 netdev_dbg(dev, "Start configuring Firmware\n");
254 hif_drv = (struct host_if_drv *)priv->hif_drv;
255 netdev_dbg(dev, "Host = %p\n", hif_drv);
256
257 w = vif->iftype;
258 cpu_to_le32s(&w);
259 if (!wilc_wlan_cfg_set(vif, 1, WID_SET_OPERATION_MODE, (u8 *)&w, 4,
260 0, 0))
261 goto fail;
262
263 b = WILC_FW_BSS_TYPE_INFRA;
264 if (!wilc_wlan_cfg_set(vif, 0, WID_BSS_TYPE, &b, 1, 0, 0))
265 goto fail;
266
267 b = WILC_FW_TX_RATE_AUTO;
268 if (!wilc_wlan_cfg_set(vif, 0, WID_CURRENT_TX_RATE, &b, 1, 0, 0))
269 goto fail;
270
271 b = WILC_FW_OPER_MODE_G_MIXED_11B_2;
272 if (!wilc_wlan_cfg_set(vif, 0, WID_11G_OPERATING_MODE, &b, 1, 0, 0))
273 goto fail;
274
275 b = WILC_FW_PREAMBLE_SHORT;
276 if (!wilc_wlan_cfg_set(vif, 0, WID_PREAMBLE, &b, 1, 0, 0))
277 goto fail;
278
279 b = WILC_FW_11N_PROT_AUTO;
280 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_PROT_MECH, &b, 1, 0, 0))
281 goto fail;
282
283 b = WILC_FW_ACTIVE_SCAN;
284 if (!wilc_wlan_cfg_set(vif, 0, WID_SCAN_TYPE, &b, 1, 0, 0))
285 goto fail;
286
287 b = WILC_FW_SITE_SURVEY_OFF;
288 if (!wilc_wlan_cfg_set(vif, 0, WID_SITE_SURVEY, &b, 1, 0, 0))
289 goto fail;
290
291 hw = 0xffff;
292 cpu_to_le16s(&hw);
293 if (!wilc_wlan_cfg_set(vif, 0, WID_RTS_THRESHOLD, (u8 *)&hw, 2, 0, 0))
294 goto fail;
295
296 hw = 2346;
297 cpu_to_le16s(&hw);
298 if (!wilc_wlan_cfg_set(vif, 0, WID_FRAG_THRESHOLD, (u8 *)&hw, 2, 0, 0))
299 goto fail;
300
301 b = 0;
302 if (!wilc_wlan_cfg_set(vif, 0, WID_BCAST_SSID, &b, 1, 0, 0))
303 goto fail;
304
305 b = 1;
306 if (!wilc_wlan_cfg_set(vif, 0, WID_QOS_ENABLE, &b, 1, 0, 0))
307 goto fail;
308
309 b = WILC_FW_NO_POWERSAVE;
310 if (!wilc_wlan_cfg_set(vif, 0, WID_POWER_MANAGEMENT, &b, 1, 0, 0))
311 goto fail;
312
313 b = WILC_FW_SEC_NO;
314 if (!wilc_wlan_cfg_set(vif, 0, WID_11I_MODE, &b, 1, 0, 0))
315 goto fail;
316
317 b = WILC_FW_AUTH_OPEN_SYSTEM;
318 if (!wilc_wlan_cfg_set(vif, 0, WID_AUTH_TYPE, &b, 1, 0, 0))
319 goto fail;
320
321 b = 3;
322 if (!wilc_wlan_cfg_set(vif, 0, WID_LISTEN_INTERVAL, &b, 1, 0, 0))
323 goto fail;
324
325 b = 3;
326 if (!wilc_wlan_cfg_set(vif, 0, WID_DTIM_PERIOD, &b, 1, 0, 0))
327 goto fail;
328
329 b = WILC_FW_ACK_POLICY_NORMAL;
330 if (!wilc_wlan_cfg_set(vif, 0, WID_ACK_POLICY, &b, 1, 0, 0))
331 goto fail;
332
333 b = 0;
334 if (!wilc_wlan_cfg_set(vif, 0, WID_USER_CONTROL_ON_TX_POWER, &b, 1,
335 0, 0))
336 goto fail;
337
338 b = 48;
339 if (!wilc_wlan_cfg_set(vif, 0, WID_TX_POWER_LEVEL_11A, &b, 1, 0, 0))
340 goto fail;
341
342 b = 28;
343 if (!wilc_wlan_cfg_set(vif, 0, WID_TX_POWER_LEVEL_11B, &b, 1, 0, 0))
344 goto fail;
345
346 hw = 100;
347 cpu_to_le16s(&hw);
348 if (!wilc_wlan_cfg_set(vif, 0, WID_BEACON_INTERVAL, (u8 *)&hw, 2, 0, 0))
349 goto fail;
350
351 b = WILC_FW_REKEY_POLICY_DISABLE;
352 if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_POLICY, &b, 1, 0, 0))
353 goto fail;
354
355 w = 84600;
356 cpu_to_le32s(&w);
357 if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_PERIOD, (u8 *)&w, 4, 0, 0))
358 goto fail;
359
360 w = 500;
361 cpu_to_le32s(&w);
362 if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_PACKET_COUNT, (u8 *)&w, 4, 0,
363 0))
364 goto fail;
365
366 b = 1;
367 if (!wilc_wlan_cfg_set(vif, 0, WID_SHORT_SLOT_ALLOWED, &b, 1, 0,
368 0))
369 goto fail;
370
371 b = WILC_FW_ERP_PROT_SELF_CTS;
372 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_ERP_PROT_TYPE, &b, 1, 0, 0))
373 goto fail;
374
375 b = 1;
376 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_ENABLE, &b, 1, 0, 0))
377 goto fail;
378
379 b = WILC_FW_11N_OP_MODE_HT_MIXED;
380 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_OPERATING_MODE, &b, 1, 0, 0))
381 goto fail;
382
383 b = 1;
384 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_TXOP_PROT_DISABLE, &b, 1, 0, 0))
385 goto fail;
386
387 b = WILC_FW_OBBS_NONHT_DETECT_PROTECT_REPORT;
388 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_OBSS_NONHT_DETECTION, &b, 1,
389 0, 0))
390 goto fail;
391
392 b = WILC_FW_HT_PROT_RTS_CTS_NONHT;
393 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_HT_PROT_TYPE, &b, 1, 0, 0))
394 goto fail;
395
396 b = 0;
397 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_RIFS_PROT_ENABLE, &b, 1, 0,
398 0))
399 goto fail;
400
401 b = 7;
402 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_CURRENT_TX_MCS, &b, 1, 0, 0))
403 goto fail;
404
405 b = 1;
406 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_IMMEDIATE_BA_ENABLED, &b, 1,
407 1, 1))
408 goto fail;
409
410 return 0;
411
412fail:
413 return -EINVAL;
414}
415
416static void wlan_deinitialize_threads(struct net_device *dev)
417{
418 struct wilc_vif *vif = netdev_priv(dev);
419 struct wilc *wl = vif->wilc;
420
421 wl->close = 1;
422
423 complete(&wl->txq_event);
424
425 if (wl->txq_thread) {
426 kthread_stop(wl->txq_thread);
427 wl->txq_thread = NULL;
428 }
429}
430
431static void wilc_wlan_deinitialize(struct net_device *dev)
432{
433 struct wilc_vif *vif = netdev_priv(dev);
434 struct wilc *wl = vif->wilc;
435
436 if (!wl) {
437 netdev_err(dev, "wl is NULL\n");
438 return;
439 }
440
441 if (wl->initialized) {
442 netdev_info(dev, "Deinitializing wilc1000...\n");
443
444 if (!wl->dev_irq_num &&
445 wl->hif_func->disable_interrupt) {
446 mutex_lock(&wl->hif_cs);
447 wl->hif_func->disable_interrupt(wl);
448 mutex_unlock(&wl->hif_cs);
449 }
450 complete(&wl->txq_event);
451
452 wlan_deinitialize_threads(dev);
453 deinit_irq(dev);
454
455 wilc_wlan_stop(wl, vif);
456 wilc_wlan_cleanup(dev);
457
458 wl->initialized = false;
459
460 netdev_dbg(dev, "wilc1000 deinitialization Done\n");
461 } else {
462 netdev_dbg(dev, "wilc1000 is not initialized\n");
463 }
464}
465
466static int wlan_initialize_threads(struct net_device *dev)
467{
468 struct wilc_vif *vif = netdev_priv(dev);
469 struct wilc *wilc = vif->wilc;
470
471 wilc->txq_thread = kthread_run(wilc_txq_task, (void *)wilc,
472 "%s-tx", dev->name);
473 if (IS_ERR(wilc->txq_thread)) {
474 netdev_err(dev, "couldn't create TXQ thread\n");
475 wilc->close = 1;
476 return PTR_ERR(wilc->txq_thread);
477 }
478 wait_for_completion(&wilc->txq_thread_started);
479
480 return 0;
481}
482
483static int wilc_wlan_initialize(struct net_device *dev, struct wilc_vif *vif)
484{
485 int ret = 0;
486 struct wilc *wl = vif->wilc;
487
488 if (!wl->initialized) {
489 wl->mac_status = WILC_MAC_STATUS_INIT;
490 wl->close = 0;
491
492 ret = wilc_wlan_init(dev);
493 if (ret)
494 return ret;
495
496 ret = wlan_initialize_threads(dev);
497 if (ret)
498 goto fail_wilc_wlan;
499
500 if (wl->dev_irq_num && init_irq(dev)) {
501 ret = -EIO;
502 goto fail_threads;
503 }
504
505 if (!wl->dev_irq_num &&
506 wl->hif_func->enable_interrupt &&
507 wl->hif_func->enable_interrupt(wl)) {
508 ret = -EIO;
509 goto fail_irq_init;
510 }
511
512 ret = wilc_wlan_get_firmware(dev);
513 if (ret)
514 goto fail_irq_enable;
515
516 ret = wilc1000_firmware_download(dev);
517 if (ret)
518 goto fail_irq_enable;
519
520 ret = wilc_start_firmware(dev);
521 if (ret)
522 goto fail_irq_enable;
523
524 if (wilc_wlan_cfg_get(vif, 1, WID_FIRMWARE_VERSION, 1, 0)) {
525 int size;
526 char firmware_ver[WILC_MAX_FW_VERSION_STR_SIZE];
527
528 size = wilc_wlan_cfg_get_val(wl, WID_FIRMWARE_VERSION,
529 firmware_ver,
530 sizeof(firmware_ver));
531 firmware_ver[size] = '\0';
532 netdev_dbg(dev, "Firmware Ver = %s\n", firmware_ver);
533 }
534
535 ret = wilc_init_fw_config(dev, vif);
536 if (ret) {
537 netdev_err(dev, "Failed to configure firmware\n");
538 goto fail_fw_start;
539 }
540 wl->initialized = true;
541 return 0;
542
543fail_fw_start:
544 wilc_wlan_stop(wl, vif);
545
546fail_irq_enable:
547 if (!wl->dev_irq_num &&
548 wl->hif_func->disable_interrupt)
549 wl->hif_func->disable_interrupt(wl);
550fail_irq_init:
551 if (wl->dev_irq_num)
552 deinit_irq(dev);
553fail_threads:
554 wlan_deinitialize_threads(dev);
555fail_wilc_wlan:
556 wilc_wlan_cleanup(dev);
557 netdev_err(dev, "WLAN initialization FAILED\n");
558 } else {
559 netdev_dbg(dev, "wilc1000 already initialized\n");
560 }
561 return ret;
562}
563
564static int mac_init_fn(struct net_device *ndev)
565{
566 netif_start_queue(ndev);
567 netif_stop_queue(ndev);
568
569 return 0;
570}
571
572static int wilc_mac_open(struct net_device *ndev)
573{
574 struct wilc_vif *vif = netdev_priv(ndev);
575 struct wilc *wl = vif->wilc;
576 int ret = 0;
577 struct mgmt_frame_regs mgmt_regs = {};
578 u8 addr[ETH_ALEN] __aligned(2);
579
580 if (!wl || !wl->dev) {
581 netdev_err(ndev, "device not ready\n");
582 return -ENODEV;
583 }
584
585 netdev_dbg(ndev, "MAC OPEN[%p]\n", ndev);
586
587 ret = wilc_init_host_int(ndev);
588 if (ret)
589 return ret;
590
591 ret = wilc_wlan_initialize(ndev, vif);
592 if (ret) {
593 wilc_deinit_host_int(ndev);
594 return ret;
595 }
596
597 wilc_set_operation_mode(vif, wilc_get_vif_idx(vif), vif->iftype,
598 vif->idx);
599
600 if (is_valid_ether_addr(ndev->dev_addr)) {
601 ether_addr_copy(addr, ndev->dev_addr);
602 wilc_set_mac_address(vif, addr);
603 } else {
604 wilc_get_mac_address(vif, addr);
605 eth_hw_addr_set(ndev, addr);
606 }
607 netdev_dbg(ndev, "Mac address: %pM\n", ndev->dev_addr);
608
609 if (!is_valid_ether_addr(ndev->dev_addr)) {
610 netdev_err(ndev, "Wrong MAC address\n");
611 wilc_deinit_host_int(ndev);
612 wilc_wlan_deinitialize(ndev);
613 return -EINVAL;
614 }
615
616 mgmt_regs.interface_stypes = vif->mgmt_reg_stypes;
617 /* so we detect a change */
618 vif->mgmt_reg_stypes = 0;
619 wilc_update_mgmt_frame_registrations(vif->ndev->ieee80211_ptr->wiphy,
620 vif->ndev->ieee80211_ptr,
621 &mgmt_regs);
622 netif_wake_queue(ndev);
623 wl->open_ifcs++;
624 vif->mac_opened = 1;
625 return 0;
626}
627
628static struct net_device_stats *mac_stats(struct net_device *dev)
629{
630 struct wilc_vif *vif = netdev_priv(dev);
631
632 return &vif->netstats;
633}
634
635static int wilc_set_mac_addr(struct net_device *dev, void *p)
636{
637 int result;
638 struct wilc_vif *vif = netdev_priv(dev);
639 struct wilc *wilc = vif->wilc;
640 struct sockaddr *addr = (struct sockaddr *)p;
641 unsigned char mac_addr[ETH_ALEN];
642 struct wilc_vif *tmp_vif;
643 int srcu_idx;
644
645 if (!is_valid_ether_addr(addr->sa_data))
646 return -EADDRNOTAVAIL;
647
648 if (!vif->mac_opened) {
649 eth_commit_mac_addr_change(dev, p);
650 return 0;
651 }
652
653 /* Verify MAC Address is not already in use: */
654
655 srcu_idx = srcu_read_lock(&wilc->srcu);
656 list_for_each_entry_rcu(tmp_vif, &wilc->vif_list, list) {
657 wilc_get_mac_address(tmp_vif, mac_addr);
658 if (ether_addr_equal(addr->sa_data, mac_addr)) {
659 if (vif != tmp_vif) {
660 srcu_read_unlock(&wilc->srcu, srcu_idx);
661 return -EADDRNOTAVAIL;
662 }
663 srcu_read_unlock(&wilc->srcu, srcu_idx);
664 return 0;
665 }
666 }
667 srcu_read_unlock(&wilc->srcu, srcu_idx);
668
669 result = wilc_set_mac_address(vif, (u8 *)addr->sa_data);
670 if (result)
671 return result;
672
673 eth_commit_mac_addr_change(dev, p);
674 return result;
675}
676
677static void wilc_set_multicast_list(struct net_device *dev)
678{
679 struct netdev_hw_addr *ha;
680 struct wilc_vif *vif = netdev_priv(dev);
681 int i;
682 u8 *mc_list;
683 u8 *cur_mc;
684
685 if (dev->flags & IFF_PROMISC)
686 return;
687
688 if (dev->flags & IFF_ALLMULTI ||
689 dev->mc.count > WILC_MULTICAST_TABLE_SIZE) {
690 wilc_setup_multicast_filter(vif, 0, 0, NULL);
691 return;
692 }
693
694 if (dev->mc.count == 0) {
695 wilc_setup_multicast_filter(vif, 1, 0, NULL);
696 return;
697 }
698
699 mc_list = kmalloc_array(dev->mc.count, ETH_ALEN, GFP_ATOMIC);
700 if (!mc_list)
701 return;
702
703 cur_mc = mc_list;
704 i = 0;
705 netdev_for_each_mc_addr(ha, dev) {
706 memcpy(cur_mc, ha->addr, ETH_ALEN);
707 netdev_dbg(dev, "Entry[%d]: %pM\n", i, cur_mc);
708 i++;
709 cur_mc += ETH_ALEN;
710 }
711
712 if (wilc_setup_multicast_filter(vif, 1, dev->mc.count, mc_list))
713 kfree(mc_list);
714}
715
716static void wilc_tx_complete(void *priv, int status)
717{
718 struct tx_complete_data *pv_data = priv;
719
720 dev_kfree_skb(pv_data->skb);
721 kfree(pv_data);
722}
723
724netdev_tx_t wilc_mac_xmit(struct sk_buff *skb, struct net_device *ndev)
725{
726 struct wilc_vif *vif = netdev_priv(ndev);
727 struct wilc *wilc = vif->wilc;
728 struct tx_complete_data *tx_data = NULL;
729 int queue_count;
730
731 if (skb->dev != ndev) {
732 netdev_err(ndev, "Packet not destined to this device\n");
733 return NETDEV_TX_OK;
734 }
735
736 tx_data = kmalloc(sizeof(*tx_data), GFP_ATOMIC);
737 if (!tx_data) {
738 dev_kfree_skb(skb);
739 netif_wake_queue(ndev);
740 return NETDEV_TX_OK;
741 }
742
743 tx_data->buff = skb->data;
744 tx_data->size = skb->len;
745 tx_data->skb = skb;
746
747 vif->netstats.tx_packets++;
748 vif->netstats.tx_bytes += tx_data->size;
749 queue_count = wilc_wlan_txq_add_net_pkt(ndev, tx_data,
750 tx_data->buff, tx_data->size,
751 wilc_tx_complete);
752
753 if (queue_count > FLOW_CONTROL_UPPER_THRESHOLD) {
754 int srcu_idx;
755 struct wilc_vif *vif;
756
757 srcu_idx = srcu_read_lock(&wilc->srcu);
758 list_for_each_entry_rcu(vif, &wilc->vif_list, list) {
759 if (vif->mac_opened)
760 netif_stop_queue(vif->ndev);
761 }
762 srcu_read_unlock(&wilc->srcu, srcu_idx);
763 }
764
765 return NETDEV_TX_OK;
766}
767
768static int wilc_mac_close(struct net_device *ndev)
769{
770 struct wilc_vif *vif = netdev_priv(ndev);
771 struct wilc *wl = vif->wilc;
772
773 netdev_dbg(ndev, "Mac close\n");
774
775 if (wl->open_ifcs > 0)
776 wl->open_ifcs--;
777 else
778 return 0;
779
780 if (vif->ndev) {
781 netif_stop_queue(vif->ndev);
782
783 wilc_handle_disconnect(vif);
784 wilc_deinit_host_int(vif->ndev);
785 }
786
787 if (wl->open_ifcs == 0) {
788 netdev_dbg(ndev, "Deinitializing wilc1000\n");
789 wl->close = 1;
790 wilc_wlan_deinitialize(ndev);
791 }
792
793 vif->mac_opened = 0;
794
795 return 0;
796}
797
798void wilc_frmw_to_host(struct wilc *wilc, u8 *buff, u32 size,
799 u32 pkt_offset)
800{
801 unsigned int frame_len = 0;
802 int stats;
803 unsigned char *buff_to_send = NULL;
804 struct sk_buff *skb;
805 struct net_device *wilc_netdev;
806 struct wilc_vif *vif;
807
808 if (!wilc)
809 return;
810
811 wilc_netdev = get_if_handler(wilc, buff);
812 if (!wilc_netdev)
813 return;
814
815 buff += pkt_offset;
816 vif = netdev_priv(wilc_netdev);
817
818 if (size > 0) {
819 frame_len = size;
820 buff_to_send = buff;
821
822 skb = dev_alloc_skb(frame_len);
823 if (!skb)
824 return;
825
826 skb->dev = wilc_netdev;
827
828 skb_put_data(skb, buff_to_send, frame_len);
829
830 skb->protocol = eth_type_trans(skb, wilc_netdev);
831 vif->netstats.rx_packets++;
832 vif->netstats.rx_bytes += frame_len;
833 skb->ip_summed = CHECKSUM_UNNECESSARY;
834 stats = netif_rx(skb);
835 netdev_dbg(wilc_netdev, "netif_rx ret value is: %d\n", stats);
836 }
837}
838
839void wilc_wfi_mgmt_rx(struct wilc *wilc, u8 *buff, u32 size, bool is_auth)
840{
841 int srcu_idx;
842 struct wilc_vif *vif;
843
844 srcu_idx = srcu_read_lock(&wilc->srcu);
845 list_for_each_entry_rcu(vif, &wilc->vif_list, list) {
846 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buff;
847 u16 type = le16_to_cpup((__le16 *)buff);
848 u32 type_bit = BIT(type >> 4);
849 u32 auth_bit = BIT(IEEE80211_STYPE_AUTH >> 4);
850
851 if ((vif->mgmt_reg_stypes & auth_bit &&
852 ieee80211_is_auth(mgmt->frame_control)) &&
853 vif->iftype == WILC_STATION_MODE && is_auth) {
854 wilc_wfi_mgmt_frame_rx(vif, buff, size);
855 break;
856 }
857
858 if (vif->priv.p2p_listen_state &&
859 vif->mgmt_reg_stypes & type_bit)
860 wilc_wfi_p2p_rx(vif, buff, size);
861
862 if (vif->monitor_flag)
863 wilc_wfi_monitor_rx(wilc->monitor_dev, buff, size);
864 }
865 srcu_read_unlock(&wilc->srcu, srcu_idx);
866}
867
868static const struct net_device_ops wilc_netdev_ops = {
869 .ndo_init = mac_init_fn,
870 .ndo_open = wilc_mac_open,
871 .ndo_stop = wilc_mac_close,
872 .ndo_set_mac_address = wilc_set_mac_addr,
873 .ndo_start_xmit = wilc_mac_xmit,
874 .ndo_get_stats = mac_stats,
875 .ndo_set_rx_mode = wilc_set_multicast_list,
876};
877
878void wilc_netdev_cleanup(struct wilc *wilc)
879{
880 struct wilc_vif *vif;
881 int srcu_idx, ifc_cnt = 0;
882
883 if (!wilc)
884 return;
885
886 if (wilc->firmware) {
887 release_firmware(wilc->firmware);
888 wilc->firmware = NULL;
889 }
890
891 srcu_idx = srcu_read_lock(&wilc->srcu);
892 list_for_each_entry_rcu(vif, &wilc->vif_list, list) {
893 if (vif->ndev)
894 unregister_netdev(vif->ndev);
895 }
896 srcu_read_unlock(&wilc->srcu, srcu_idx);
897
898 wilc_wfi_deinit_mon_interface(wilc, false);
899 destroy_workqueue(wilc->hif_workqueue);
900
901 while (ifc_cnt < WILC_NUM_CONCURRENT_IFC) {
902 mutex_lock(&wilc->vif_mutex);
903 if (wilc->vif_num <= 0) {
904 mutex_unlock(&wilc->vif_mutex);
905 break;
906 }
907 vif = wilc_get_wl_to_vif(wilc);
908 if (!IS_ERR(vif))
909 list_del_rcu(&vif->list);
910
911 wilc->vif_num--;
912 mutex_unlock(&wilc->vif_mutex);
913 synchronize_srcu(&wilc->srcu);
914 ifc_cnt++;
915 }
916
917 wilc_wlan_cfg_deinit(wilc);
918 wlan_deinit_locks(wilc);
919 wiphy_unregister(wilc->wiphy);
920 wiphy_free(wilc->wiphy);
921}
922EXPORT_SYMBOL_GPL(wilc_netdev_cleanup);
923
924static u8 wilc_get_available_idx(struct wilc *wl)
925{
926 int idx = 0;
927 struct wilc_vif *vif;
928 int srcu_idx;
929
930 srcu_idx = srcu_read_lock(&wl->srcu);
931 list_for_each_entry_rcu(vif, &wl->vif_list, list) {
932 if (vif->idx == 0)
933 idx = 1;
934 else
935 idx = 0;
936 }
937 srcu_read_unlock(&wl->srcu, srcu_idx);
938 return idx;
939}
940
941struct wilc_vif *wilc_netdev_ifc_init(struct wilc *wl, const char *name,
942 int vif_type, enum nl80211_iftype type,
943 bool rtnl_locked)
944{
945 struct net_device *ndev;
946 struct wilc_vif *vif;
947 int ret;
948
949 ndev = alloc_etherdev(sizeof(*vif));
950 if (!ndev)
951 return ERR_PTR(-ENOMEM);
952
953 vif = netdev_priv(ndev);
954 ndev->ieee80211_ptr = &vif->priv.wdev;
955 strcpy(ndev->name, name);
956 vif->wilc = wl;
957 vif->ndev = ndev;
958 ndev->ml_priv = vif;
959
960 ndev->netdev_ops = &wilc_netdev_ops;
961
962 SET_NETDEV_DEV(ndev, wiphy_dev(wl->wiphy));
963
964 vif->priv.wdev.wiphy = wl->wiphy;
965 vif->priv.wdev.netdev = ndev;
966 vif->priv.wdev.iftype = type;
967 vif->priv.dev = ndev;
968
969 if (rtnl_locked)
970 ret = cfg80211_register_netdevice(ndev);
971 else
972 ret = register_netdev(ndev);
973
974 if (ret) {
975 ret = -EFAULT;
976 goto error;
977 }
978
979 wl->hif_workqueue = alloc_ordered_workqueue("%s-wq", WQ_MEM_RECLAIM,
980 ndev->name);
981 if (!wl->hif_workqueue) {
982 ret = -ENOMEM;
983 goto error;
984 }
985
986 ndev->needs_free_netdev = true;
987 vif->iftype = vif_type;
988 vif->idx = wilc_get_available_idx(wl);
989 vif->mac_opened = 0;
990 mutex_lock(&wl->vif_mutex);
991 list_add_tail_rcu(&vif->list, &wl->vif_list);
992 wl->vif_num += 1;
993 mutex_unlock(&wl->vif_mutex);
994 synchronize_srcu(&wl->srcu);
995
996 return vif;
997
998 error:
999 free_netdev(ndev);
1000 return ERR_PTR(ret);
1001}
1002
1003MODULE_LICENSE("GPL");
1004MODULE_FIRMWARE(WILC1000_FW(WILC1000_API_VER));