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
isr_uh_routine(int irq,void * user_data)26 static 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
isr_bh_routine(int irq,void * userdata)37 static 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
init_irq(struct net_device * dev)51 static 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
deinit_irq(struct net_device * dev)70 static 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
wilc_mac_indicate(struct wilc * wilc)80 void 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
get_if_handler(struct wilc * wilc,u8 * mac_header)93 static 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->mode == WILC_STATION_MODE)
101 if (ether_addr_equal_unaligned(h->addr2, vif->bssid)) {
102 ndev = vif->ndev;
103 goto out;
104 }
105 if (vif->mode == WILC_AP_MODE)
106 if (ether_addr_equal_unaligned(h->addr1, vif->bssid)) {
107 ndev = vif->ndev;
108 goto out;
109 }
110 }
111 out:
112 return ndev;
113 }
114
wilc_wlan_set_bssid(struct net_device * wilc_netdev,const u8 * bssid,u8 mode)115 void 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->mode = mode;
126 }
127
wilc_wlan_get_num_conn_ifcs(struct wilc * wilc)128 int 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
wilc_txq_task(void * vp)143 static 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
wilc_wlan_get_firmware(struct net_device * dev)179 static 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
wilc_start_firmware(struct net_device * dev)204 static 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
wilc1000_firmware_download(struct net_device * dev)221 static 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
wilc_init_fw_config(struct net_device * dev,struct wilc_vif * vif)245 static 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
412 fail:
413 return -EINVAL;
414 }
415
wlan_deinitialize_threads(struct net_device * dev)416 static 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
wilc_wlan_deinitialize(struct net_device * dev)431 static 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
wlan_initialize_threads(struct net_device * dev)466 static 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 = 0;
476 return PTR_ERR(wilc->txq_thread);
477 }
478 wait_for_completion(&wilc->txq_thread_started);
479
480 return 0;
481 }
482
wilc_wlan_initialize(struct net_device * dev,struct wilc_vif * vif)483 static 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
543 fail_fw_start:
544 wilc_wlan_stop(wl, vif);
545
546 fail_irq_enable:
547 if (!wl->dev_irq_num &&
548 wl->hif_func->disable_interrupt)
549 wl->hif_func->disable_interrupt(wl);
550 fail_irq_init:
551 if (wl->dev_irq_num)
552 deinit_irq(dev);
553 fail_threads:
554 wlan_deinitialize_threads(dev);
555 fail_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
mac_init_fn(struct net_device * ndev)564 static 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
wilc_mac_open(struct net_device * ndev)572 static 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
mac_stats(struct net_device * dev)628 static 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
wilc_set_mac_addr(struct net_device * dev,void * p)635 static 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
wilc_set_multicast_list(struct net_device * dev)677 static 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
wilc_tx_complete(void * priv,int status)716 static 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
wilc_mac_xmit(struct sk_buff * skb,struct net_device * ndev)724 netdev_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
wilc_mac_close(struct net_device * ndev)768 static 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_deinit_host_int(vif->ndev);
784 }
785
786 if (wl->open_ifcs == 0) {
787 netdev_dbg(ndev, "Deinitializing wilc1000\n");
788 wl->close = 1;
789 wilc_wlan_deinitialize(ndev);
790 }
791
792 vif->mac_opened = 0;
793
794 return 0;
795 }
796
wilc_frmw_to_host(struct wilc * wilc,u8 * buff,u32 size,u32 pkt_offset)797 void wilc_frmw_to_host(struct wilc *wilc, u8 *buff, u32 size,
798 u32 pkt_offset)
799 {
800 unsigned int frame_len = 0;
801 int stats;
802 unsigned char *buff_to_send = NULL;
803 struct sk_buff *skb;
804 struct net_device *wilc_netdev;
805 struct wilc_vif *vif;
806
807 if (!wilc)
808 return;
809
810 wilc_netdev = get_if_handler(wilc, buff);
811 if (!wilc_netdev)
812 return;
813
814 buff += pkt_offset;
815 vif = netdev_priv(wilc_netdev);
816
817 if (size > 0) {
818 frame_len = size;
819 buff_to_send = buff;
820
821 skb = dev_alloc_skb(frame_len);
822 if (!skb)
823 return;
824
825 skb->dev = wilc_netdev;
826
827 skb_put_data(skb, buff_to_send, frame_len);
828
829 skb->protocol = eth_type_trans(skb, wilc_netdev);
830 vif->netstats.rx_packets++;
831 vif->netstats.rx_bytes += frame_len;
832 skb->ip_summed = CHECKSUM_UNNECESSARY;
833 stats = netif_rx(skb);
834 netdev_dbg(wilc_netdev, "netif_rx ret value is: %d\n", stats);
835 }
836 }
837
wilc_wfi_mgmt_rx(struct wilc * wilc,u8 * buff,u32 size)838 void wilc_wfi_mgmt_rx(struct wilc *wilc, u8 *buff, u32 size)
839 {
840 int srcu_idx;
841 struct wilc_vif *vif;
842
843 srcu_idx = srcu_read_lock(&wilc->srcu);
844 list_for_each_entry_rcu(vif, &wilc->vif_list, list) {
845 u16 type = le16_to_cpup((__le16 *)buff);
846 u32 type_bit = BIT(type >> 4);
847
848 if (vif->priv.p2p_listen_state &&
849 vif->mgmt_reg_stypes & type_bit)
850 wilc_wfi_p2p_rx(vif, buff, size);
851
852 if (vif->monitor_flag)
853 wilc_wfi_monitor_rx(wilc->monitor_dev, buff, size);
854 }
855 srcu_read_unlock(&wilc->srcu, srcu_idx);
856 }
857
858 static const struct net_device_ops wilc_netdev_ops = {
859 .ndo_init = mac_init_fn,
860 .ndo_open = wilc_mac_open,
861 .ndo_stop = wilc_mac_close,
862 .ndo_set_mac_address = wilc_set_mac_addr,
863 .ndo_start_xmit = wilc_mac_xmit,
864 .ndo_get_stats = mac_stats,
865 .ndo_set_rx_mode = wilc_set_multicast_list,
866 };
867
wilc_netdev_cleanup(struct wilc * wilc)868 void wilc_netdev_cleanup(struct wilc *wilc)
869 {
870 struct wilc_vif *vif;
871 int srcu_idx, ifc_cnt = 0;
872
873 if (!wilc)
874 return;
875
876 if (wilc->firmware) {
877 release_firmware(wilc->firmware);
878 wilc->firmware = NULL;
879 }
880
881 srcu_idx = srcu_read_lock(&wilc->srcu);
882 list_for_each_entry_rcu(vif, &wilc->vif_list, list) {
883 if (vif->ndev)
884 unregister_netdev(vif->ndev);
885 }
886 srcu_read_unlock(&wilc->srcu, srcu_idx);
887
888 wilc_wfi_deinit_mon_interface(wilc, false);
889 destroy_workqueue(wilc->hif_workqueue);
890
891 while (ifc_cnt < WILC_NUM_CONCURRENT_IFC) {
892 mutex_lock(&wilc->vif_mutex);
893 if (wilc->vif_num <= 0) {
894 mutex_unlock(&wilc->vif_mutex);
895 break;
896 }
897 vif = wilc_get_wl_to_vif(wilc);
898 if (!IS_ERR(vif))
899 list_del_rcu(&vif->list);
900
901 wilc->vif_num--;
902 mutex_unlock(&wilc->vif_mutex);
903 synchronize_srcu(&wilc->srcu);
904 ifc_cnt++;
905 }
906
907 wilc_wlan_cfg_deinit(wilc);
908 wlan_deinit_locks(wilc);
909 wiphy_unregister(wilc->wiphy);
910 wiphy_free(wilc->wiphy);
911 }
912 EXPORT_SYMBOL_GPL(wilc_netdev_cleanup);
913
wilc_get_available_idx(struct wilc * wl)914 static u8 wilc_get_available_idx(struct wilc *wl)
915 {
916 int idx = 0;
917 struct wilc_vif *vif;
918 int srcu_idx;
919
920 srcu_idx = srcu_read_lock(&wl->srcu);
921 list_for_each_entry_rcu(vif, &wl->vif_list, list) {
922 if (vif->idx == 0)
923 idx = 1;
924 else
925 idx = 0;
926 }
927 srcu_read_unlock(&wl->srcu, srcu_idx);
928 return idx;
929 }
930
wilc_netdev_ifc_init(struct wilc * wl,const char * name,int vif_type,enum nl80211_iftype type,bool rtnl_locked)931 struct wilc_vif *wilc_netdev_ifc_init(struct wilc *wl, const char *name,
932 int vif_type, enum nl80211_iftype type,
933 bool rtnl_locked)
934 {
935 struct net_device *ndev;
936 struct wilc_vif *vif;
937 int ret;
938
939 ndev = alloc_etherdev(sizeof(*vif));
940 if (!ndev)
941 return ERR_PTR(-ENOMEM);
942
943 vif = netdev_priv(ndev);
944 ndev->ieee80211_ptr = &vif->priv.wdev;
945 strcpy(ndev->name, name);
946 vif->wilc = wl;
947 vif->ndev = ndev;
948 ndev->ml_priv = vif;
949
950 ndev->netdev_ops = &wilc_netdev_ops;
951
952 SET_NETDEV_DEV(ndev, wiphy_dev(wl->wiphy));
953
954 vif->priv.wdev.wiphy = wl->wiphy;
955 vif->priv.wdev.netdev = ndev;
956 vif->priv.wdev.iftype = type;
957 vif->priv.dev = ndev;
958
959 if (rtnl_locked)
960 ret = cfg80211_register_netdevice(ndev);
961 else
962 ret = register_netdev(ndev);
963
964 if (ret) {
965 ret = -EFAULT;
966 goto error;
967 }
968
969 wl->hif_workqueue = alloc_ordered_workqueue("%s-wq", WQ_MEM_RECLAIM,
970 ndev->name);
971 if (!wl->hif_workqueue) {
972 ret = -ENOMEM;
973 goto error;
974 }
975
976 ndev->needs_free_netdev = true;
977 vif->iftype = vif_type;
978 vif->idx = wilc_get_available_idx(wl);
979 vif->mac_opened = 0;
980 mutex_lock(&wl->vif_mutex);
981 list_add_tail_rcu(&vif->list, &wl->vif_list);
982 wl->vif_num += 1;
983 mutex_unlock(&wl->vif_mutex);
984 synchronize_srcu(&wl->srcu);
985
986 return vif;
987
988 error:
989 free_netdev(ndev);
990 return ERR_PTR(ret);
991 }
992
993 MODULE_LICENSE("GPL");
994 MODULE_FIRMWARE(WILC1000_FW(WILC1000_API_VER));
995