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