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/if_ether.h>
8 #include <linux/ip.h>
9 #include "wilc_wfi_netdevice.h"
10 #include "wilc_wlan_cfg.h"
11
12 static enum chip_ps_states chip_ps_state = CHIP_WAKEDUP;
13
is_wilc1000(u32 id)14 static inline bool is_wilc1000(u32 id)
15 {
16 return ((id & 0xfffff000) == 0x100000 ? true : false);
17 }
18
acquire_bus(struct wilc * wilc,enum bus_acquire acquire)19 static inline void acquire_bus(struct wilc *wilc, enum bus_acquire acquire)
20 {
21 mutex_lock(&wilc->hif_cs);
22 if (acquire == ACQUIRE_AND_WAKEUP)
23 chip_wakeup(wilc);
24 }
25
release_bus(struct wilc * wilc,enum bus_release release)26 static inline void release_bus(struct wilc *wilc, enum bus_release release)
27 {
28 if (release == RELEASE_ALLOW_SLEEP)
29 chip_allow_sleep(wilc);
30 mutex_unlock(&wilc->hif_cs);
31 }
32
wilc_wlan_txq_remove(struct wilc * wilc,struct txq_entry_t * tqe)33 static void wilc_wlan_txq_remove(struct wilc *wilc, struct txq_entry_t *tqe)
34 {
35 list_del(&tqe->list);
36 wilc->txq_entries -= 1;
37 }
38
39 static struct txq_entry_t *
wilc_wlan_txq_remove_from_head(struct net_device * dev)40 wilc_wlan_txq_remove_from_head(struct net_device *dev)
41 {
42 struct txq_entry_t *tqe = NULL;
43 unsigned long flags;
44 struct wilc_vif *vif = netdev_priv(dev);
45 struct wilc *wilc = vif->wilc;
46
47 spin_lock_irqsave(&wilc->txq_spinlock, flags);
48
49 if (!list_empty(&wilc->txq_head.list)) {
50 tqe = list_first_entry(&wilc->txq_head.list, struct txq_entry_t,
51 list);
52 list_del(&tqe->list);
53 wilc->txq_entries -= 1;
54 }
55 spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
56 return tqe;
57 }
58
wilc_wlan_txq_add_to_tail(struct net_device * dev,struct txq_entry_t * tqe)59 static void wilc_wlan_txq_add_to_tail(struct net_device *dev,
60 struct txq_entry_t *tqe)
61 {
62 unsigned long flags;
63 struct wilc_vif *vif = netdev_priv(dev);
64 struct wilc *wilc = vif->wilc;
65
66 spin_lock_irqsave(&wilc->txq_spinlock, flags);
67
68 list_add_tail(&tqe->list, &wilc->txq_head.list);
69 wilc->txq_entries += 1;
70
71 spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
72
73 complete(&wilc->txq_event);
74 }
75
wilc_wlan_txq_add_to_head(struct wilc_vif * vif,struct txq_entry_t * tqe)76 static int wilc_wlan_txq_add_to_head(struct wilc_vif *vif,
77 struct txq_entry_t *tqe)
78 {
79 unsigned long flags;
80 struct wilc *wilc = vif->wilc;
81
82 mutex_lock(&wilc->txq_add_to_head_cs);
83
84 spin_lock_irqsave(&wilc->txq_spinlock, flags);
85
86 list_add(&tqe->list, &wilc->txq_head.list);
87 wilc->txq_entries += 1;
88
89 spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
90 mutex_unlock(&wilc->txq_add_to_head_cs);
91 complete(&wilc->txq_event);
92
93 return 0;
94 }
95
96 struct ack_session_info;
97 struct ack_session_info {
98 u32 seq_num;
99 u32 bigger_ack_num;
100 u16 src_port;
101 u16 dst_port;
102 u16 status;
103 };
104
105 struct pending_acks_info {
106 u32 ack_num;
107 u32 session_index;
108 struct txq_entry_t *txqe;
109 };
110
111 #define NOT_TCP_ACK (-1)
112
113 #define MAX_TCP_SESSION 25
114 #define MAX_PENDING_ACKS 256
115 static struct ack_session_info ack_session_info[2 * MAX_TCP_SESSION];
116 static struct pending_acks_info pending_acks_info[MAX_PENDING_ACKS];
117
118 static u32 pending_base;
119 static u32 tcp_session;
120 static u32 pending_acks;
121
add_tcp_session(u32 src_prt,u32 dst_prt,u32 seq)122 static inline int add_tcp_session(u32 src_prt, u32 dst_prt, u32 seq)
123 {
124 if (tcp_session < 2 * MAX_TCP_SESSION) {
125 ack_session_info[tcp_session].seq_num = seq;
126 ack_session_info[tcp_session].bigger_ack_num = 0;
127 ack_session_info[tcp_session].src_port = src_prt;
128 ack_session_info[tcp_session].dst_port = dst_prt;
129 tcp_session++;
130 }
131 return 0;
132 }
133
update_tcp_session(u32 index,u32 ack)134 static inline int update_tcp_session(u32 index, u32 ack)
135 {
136 if (index < 2 * MAX_TCP_SESSION &&
137 ack > ack_session_info[index].bigger_ack_num)
138 ack_session_info[index].bigger_ack_num = ack;
139 return 0;
140 }
141
add_tcp_pending_ack(u32 ack,u32 session_index,struct txq_entry_t * txqe)142 static inline int add_tcp_pending_ack(u32 ack, u32 session_index,
143 struct txq_entry_t *txqe)
144 {
145 u32 i = pending_base + pending_acks;
146
147 if (i < MAX_PENDING_ACKS) {
148 pending_acks_info[i].ack_num = ack;
149 pending_acks_info[i].txqe = txqe;
150 pending_acks_info[i].session_index = session_index;
151 txqe->tcp_pending_ack_idx = i;
152 pending_acks++;
153 }
154 return 0;
155 }
156
tcp_process(struct net_device * dev,struct txq_entry_t * tqe)157 static inline void tcp_process(struct net_device *dev, struct txq_entry_t *tqe)
158 {
159 void *buffer = tqe->buffer;
160 const struct ethhdr *eth_hdr_ptr = buffer;
161 int i;
162 unsigned long flags;
163 struct wilc_vif *vif = netdev_priv(dev);
164 struct wilc *wilc = vif->wilc;
165
166 spin_lock_irqsave(&wilc->txq_spinlock, flags);
167
168 if (eth_hdr_ptr->h_proto == htons(ETH_P_IP)) {
169 const struct iphdr *ip_hdr_ptr = buffer + ETH_HLEN;
170
171 if (ip_hdr_ptr->protocol == IPPROTO_TCP) {
172 const struct tcphdr *tcp_hdr_ptr;
173 u32 IHL, total_length, data_offset;
174
175 IHL = ip_hdr_ptr->ihl << 2;
176 tcp_hdr_ptr = buffer + ETH_HLEN + IHL;
177 total_length = ntohs(ip_hdr_ptr->tot_len);
178
179 data_offset = tcp_hdr_ptr->doff << 2;
180 if (total_length == (IHL + data_offset)) {
181 u32 seq_no, ack_no;
182
183 seq_no = ntohl(tcp_hdr_ptr->seq);
184 ack_no = ntohl(tcp_hdr_ptr->ack_seq);
185 for (i = 0; i < tcp_session; i++) {
186 u32 j = ack_session_info[i].seq_num;
187
188 if (i < 2 * MAX_TCP_SESSION &&
189 j == seq_no) {
190 update_tcp_session(i, ack_no);
191 break;
192 }
193 }
194 if (i == tcp_session)
195 add_tcp_session(0, 0, seq_no);
196
197 add_tcp_pending_ack(ack_no, i, tqe);
198 }
199 }
200 }
201 spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
202 }
203
wilc_wlan_txq_filter_dup_tcp_ack(struct net_device * dev)204 static int wilc_wlan_txq_filter_dup_tcp_ack(struct net_device *dev)
205 {
206 struct wilc_vif *vif = netdev_priv(dev);
207 struct wilc *wilc = vif->wilc;
208 u32 i = 0;
209 u32 dropped = 0;
210 unsigned long flags;
211
212 spin_lock_irqsave(&wilc->txq_spinlock, flags);
213 for (i = pending_base; i < (pending_base + pending_acks); i++) {
214 u32 session_index;
215 u32 bigger_ack_num;
216
217 if (i >= MAX_PENDING_ACKS)
218 break;
219
220 session_index = pending_acks_info[i].session_index;
221
222 if (session_index >= 2 * MAX_TCP_SESSION)
223 break;
224
225 bigger_ack_num = ack_session_info[session_index].bigger_ack_num;
226
227 if (pending_acks_info[i].ack_num < bigger_ack_num) {
228 struct txq_entry_t *tqe;
229
230 tqe = pending_acks_info[i].txqe;
231 if (tqe) {
232 wilc_wlan_txq_remove(wilc, tqe);
233 tqe->status = 1;
234 if (tqe->tx_complete_func)
235 tqe->tx_complete_func(tqe->priv,
236 tqe->status);
237 kfree(tqe);
238 dropped++;
239 }
240 }
241 }
242 pending_acks = 0;
243 tcp_session = 0;
244
245 if (pending_base == 0)
246 pending_base = MAX_TCP_SESSION;
247 else
248 pending_base = 0;
249
250 spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
251
252 while (dropped > 0) {
253 wait_for_completion_timeout(&wilc->txq_event,
254 msecs_to_jiffies(1));
255 dropped--;
256 }
257
258 return 1;
259 }
260
261 static bool enabled;
262
wilc_enable_tcp_ack_filter(bool value)263 void wilc_enable_tcp_ack_filter(bool value)
264 {
265 enabled = value;
266 }
267
wilc_wlan_txq_add_cfg_pkt(struct wilc_vif * vif,u8 * buffer,u32 buffer_size)268 static int wilc_wlan_txq_add_cfg_pkt(struct wilc_vif *vif, u8 *buffer,
269 u32 buffer_size)
270 {
271 struct txq_entry_t *tqe;
272 struct wilc *wilc = vif->wilc;
273
274 netdev_dbg(vif->ndev, "Adding config packet ...\n");
275 if (wilc->quit) {
276 netdev_dbg(vif->ndev, "Return due to clear function\n");
277 complete(&wilc->cfg_event);
278 return 0;
279 }
280
281 tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
282 if (!tqe)
283 return 0;
284
285 tqe->type = WILC_CFG_PKT;
286 tqe->buffer = buffer;
287 tqe->buffer_size = buffer_size;
288 tqe->tx_complete_func = NULL;
289 tqe->priv = NULL;
290 tqe->tcp_pending_ack_idx = NOT_TCP_ACK;
291
292 if (wilc_wlan_txq_add_to_head(vif, tqe)) {
293 kfree(tqe);
294 return 0;
295 }
296
297 return 1;
298 }
299
wilc_wlan_txq_add_net_pkt(struct net_device * dev,void * priv,u8 * buffer,u32 buffer_size,wilc_tx_complete_func_t func)300 int wilc_wlan_txq_add_net_pkt(struct net_device *dev, void *priv, u8 *buffer,
301 u32 buffer_size, wilc_tx_complete_func_t func)
302 {
303 struct txq_entry_t *tqe;
304 struct wilc_vif *vif = netdev_priv(dev);
305 struct wilc *wilc;
306
307 wilc = vif->wilc;
308
309 if (wilc->quit)
310 return 0;
311
312 tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
313
314 if (!tqe)
315 return 0;
316 tqe->type = WILC_NET_PKT;
317 tqe->buffer = buffer;
318 tqe->buffer_size = buffer_size;
319 tqe->tx_complete_func = func;
320 tqe->priv = priv;
321
322 tqe->tcp_pending_ack_idx = NOT_TCP_ACK;
323 if (enabled)
324 tcp_process(dev, tqe);
325 wilc_wlan_txq_add_to_tail(dev, tqe);
326 return wilc->txq_entries;
327 }
328
wilc_wlan_txq_add_mgmt_pkt(struct net_device * dev,void * priv,u8 * buffer,u32 buffer_size,wilc_tx_complete_func_t func)329 int wilc_wlan_txq_add_mgmt_pkt(struct net_device *dev, void *priv, u8 *buffer,
330 u32 buffer_size, wilc_tx_complete_func_t func)
331 {
332 struct txq_entry_t *tqe;
333 struct wilc_vif *vif = netdev_priv(dev);
334 struct wilc *wilc;
335
336 wilc = vif->wilc;
337
338 if (wilc->quit)
339 return 0;
340
341 tqe = kmalloc(sizeof(*tqe), GFP_KERNEL);
342
343 if (!tqe)
344 return 0;
345 tqe->type = WILC_MGMT_PKT;
346 tqe->buffer = buffer;
347 tqe->buffer_size = buffer_size;
348 tqe->tx_complete_func = func;
349 tqe->priv = priv;
350 tqe->tcp_pending_ack_idx = NOT_TCP_ACK;
351 wilc_wlan_txq_add_to_tail(dev, tqe);
352 return 1;
353 }
354
wilc_wlan_txq_get_first(struct wilc * wilc)355 static struct txq_entry_t *wilc_wlan_txq_get_first(struct wilc *wilc)
356 {
357 struct txq_entry_t *tqe = NULL;
358 unsigned long flags;
359
360 spin_lock_irqsave(&wilc->txq_spinlock, flags);
361
362 if (!list_empty(&wilc->txq_head.list))
363 tqe = list_first_entry(&wilc->txq_head.list, struct txq_entry_t,
364 list);
365
366 spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
367
368 return tqe;
369 }
370
wilc_wlan_txq_get_next(struct wilc * wilc,struct txq_entry_t * tqe)371 static struct txq_entry_t *wilc_wlan_txq_get_next(struct wilc *wilc,
372 struct txq_entry_t *tqe)
373 {
374 unsigned long flags;
375
376 spin_lock_irqsave(&wilc->txq_spinlock, flags);
377
378 if (!list_is_last(&tqe->list, &wilc->txq_head.list))
379 tqe = list_next_entry(tqe, list);
380 else
381 tqe = NULL;
382 spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
383
384 return tqe;
385 }
386
wilc_wlan_rxq_add(struct wilc * wilc,struct rxq_entry_t * rqe)387 static void wilc_wlan_rxq_add(struct wilc *wilc, struct rxq_entry_t *rqe)
388 {
389 if (wilc->quit)
390 return;
391
392 mutex_lock(&wilc->rxq_cs);
393 list_add_tail(&rqe->list, &wilc->rxq_head.list);
394 mutex_unlock(&wilc->rxq_cs);
395 }
396
wilc_wlan_rxq_remove(struct wilc * wilc)397 static struct rxq_entry_t *wilc_wlan_rxq_remove(struct wilc *wilc)
398 {
399 struct rxq_entry_t *rqe = NULL;
400
401 mutex_lock(&wilc->rxq_cs);
402 if (!list_empty(&wilc->rxq_head.list)) {
403 rqe = list_first_entry(&wilc->rxq_head.list, struct rxq_entry_t,
404 list);
405 list_del(&rqe->list);
406 }
407 mutex_unlock(&wilc->rxq_cs);
408 return rqe;
409 }
410
chip_allow_sleep(struct wilc * wilc)411 void chip_allow_sleep(struct wilc *wilc)
412 {
413 u32 reg = 0;
414
415 wilc->hif_func->hif_read_reg(wilc, 0xf0, ®);
416
417 wilc->hif_func->hif_write_reg(wilc, 0xf0, reg & ~BIT(0));
418 wilc->hif_func->hif_write_reg(wilc, 0xfa, 0);
419 }
420 EXPORT_SYMBOL_GPL(chip_allow_sleep);
421
chip_wakeup(struct wilc * wilc)422 void chip_wakeup(struct wilc *wilc)
423 {
424 u32 reg, clk_status_reg;
425
426 if ((wilc->io_type & 0x1) == HIF_SPI) {
427 do {
428 wilc->hif_func->hif_read_reg(wilc, 1, ®);
429 wilc->hif_func->hif_write_reg(wilc, 1, reg | BIT(1));
430 wilc->hif_func->hif_write_reg(wilc, 1, reg & ~BIT(1));
431
432 do {
433 usleep_range(2 * 1000, 2 * 1000);
434 wilc_get_chipid(wilc, true);
435 } while (wilc_get_chipid(wilc, true) == 0);
436 } while (wilc_get_chipid(wilc, true) == 0);
437 } else if ((wilc->io_type & 0x1) == HIF_SDIO) {
438 wilc->hif_func->hif_write_reg(wilc, 0xfa, 1);
439 udelay(200);
440 wilc->hif_func->hif_read_reg(wilc, 0xf0, ®);
441 do {
442 wilc->hif_func->hif_write_reg(wilc, 0xf0,
443 reg | BIT(0));
444 wilc->hif_func->hif_read_reg(wilc, 0xf1,
445 &clk_status_reg);
446
447 while ((clk_status_reg & 0x1) == 0) {
448 usleep_range(2 * 1000, 2 * 1000);
449
450 wilc->hif_func->hif_read_reg(wilc, 0xf1,
451 &clk_status_reg);
452 }
453 if ((clk_status_reg & 0x1) == 0) {
454 wilc->hif_func->hif_write_reg(wilc, 0xf0,
455 reg & (~BIT(0)));
456 }
457 } while ((clk_status_reg & 0x1) == 0);
458 }
459
460 if (chip_ps_state == CHIP_SLEEPING_MANUAL) {
461 if (wilc_get_chipid(wilc, false) < 0x1002b0) {
462 u32 val32;
463
464 wilc->hif_func->hif_read_reg(wilc, 0x1e1c, &val32);
465 val32 |= BIT(6);
466 wilc->hif_func->hif_write_reg(wilc, 0x1e1c, val32);
467
468 wilc->hif_func->hif_read_reg(wilc, 0x1e9c, &val32);
469 val32 |= BIT(6);
470 wilc->hif_func->hif_write_reg(wilc, 0x1e9c, val32);
471 }
472 }
473 chip_ps_state = CHIP_WAKEDUP;
474 }
475 EXPORT_SYMBOL_GPL(chip_wakeup);
476
wilc_chip_sleep_manually(struct wilc * wilc)477 void wilc_chip_sleep_manually(struct wilc *wilc)
478 {
479 if (chip_ps_state != CHIP_WAKEDUP)
480 return;
481 acquire_bus(wilc, ACQUIRE_ONLY);
482
483 chip_allow_sleep(wilc);
484 wilc->hif_func->hif_write_reg(wilc, 0x10a8, 1);
485
486 chip_ps_state = CHIP_SLEEPING_MANUAL;
487 release_bus(wilc, RELEASE_ONLY);
488 }
489 EXPORT_SYMBOL_GPL(wilc_chip_sleep_manually);
490
host_wakeup_notify(struct wilc * wilc)491 void host_wakeup_notify(struct wilc *wilc)
492 {
493 acquire_bus(wilc, ACQUIRE_ONLY);
494 wilc->hif_func->hif_write_reg(wilc, 0x10b0, 1);
495 release_bus(wilc, RELEASE_ONLY);
496 }
497 EXPORT_SYMBOL_GPL(host_wakeup_notify);
498
host_sleep_notify(struct wilc * wilc)499 void host_sleep_notify(struct wilc *wilc)
500 {
501 acquire_bus(wilc, ACQUIRE_ONLY);
502 wilc->hif_func->hif_write_reg(wilc, 0x10ac, 1);
503 release_bus(wilc, RELEASE_ONLY);
504 }
505 EXPORT_SYMBOL_GPL(host_sleep_notify);
506
wilc_wlan_handle_txq(struct net_device * dev,u32 * txq_count)507 int wilc_wlan_handle_txq(struct net_device *dev, u32 *txq_count)
508 {
509 int i, entries = 0;
510 u32 sum;
511 u32 reg;
512 u32 offset = 0;
513 int vmm_sz = 0;
514 struct txq_entry_t *tqe;
515 int ret = 0;
516 int counter;
517 int timeout;
518 u32 vmm_table[WILC_VMM_TBL_SIZE];
519 struct wilc_vif *vif = netdev_priv(dev);
520 struct wilc *wilc = vif->wilc;
521 const struct wilc_hif_func *func;
522 u8 *txb = wilc->tx_buffer;
523
524 if (wilc->quit)
525 goto out;
526
527 mutex_lock(&wilc->txq_add_to_head_cs);
528 wilc_wlan_txq_filter_dup_tcp_ack(dev);
529 tqe = wilc_wlan_txq_get_first(wilc);
530 i = 0;
531 sum = 0;
532 do {
533 if (tqe && (i < (WILC_VMM_TBL_SIZE - 1))) {
534 if (tqe->type == WILC_CFG_PKT)
535 vmm_sz = ETH_CONFIG_PKT_HDR_OFFSET;
536
537 else if (tqe->type == WILC_NET_PKT)
538 vmm_sz = ETH_ETHERNET_HDR_OFFSET;
539
540 else
541 vmm_sz = HOST_HDR_OFFSET;
542
543 vmm_sz += tqe->buffer_size;
544
545 if (vmm_sz & 0x3)
546 vmm_sz = (vmm_sz + 4) & ~0x3;
547
548 if ((sum + vmm_sz) > LINUX_TX_SIZE)
549 break;
550
551 vmm_table[i] = vmm_sz / 4;
552 if (tqe->type == WILC_CFG_PKT)
553 vmm_table[i] |= BIT(10);
554 cpu_to_le32s(&vmm_table[i]);
555
556 i++;
557 sum += vmm_sz;
558 tqe = wilc_wlan_txq_get_next(wilc, tqe);
559 } else {
560 break;
561 }
562 } while (1);
563
564 if (i == 0)
565 goto out;
566 vmm_table[i] = 0x0;
567
568 acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
569 counter = 0;
570 func = wilc->hif_func;
571 do {
572 ret = func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, ®);
573 if (!ret)
574 break;
575
576 if ((reg & 0x1) == 0)
577 break;
578
579 counter++;
580 if (counter > 200) {
581 counter = 0;
582 ret = func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, 0);
583 break;
584 }
585 } while (!wilc->quit);
586
587 if (!ret)
588 goto out_release_bus;
589
590 timeout = 200;
591 do {
592 ret = func->hif_block_tx(wilc,
593 WILC_VMM_TBL_RX_SHADOW_BASE,
594 (u8 *)vmm_table,
595 ((i + 1) * 4));
596 if (!ret)
597 break;
598
599 ret = func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x2);
600 if (!ret)
601 break;
602
603 do {
604 ret = func->hif_read_reg(wilc, WILC_HOST_VMM_CTL, ®);
605 if (!ret)
606 break;
607 if ((reg >> 2) & 0x1) {
608 entries = ((reg >> 3) & 0x3f);
609 break;
610 }
611 release_bus(wilc, RELEASE_ALLOW_SLEEP);
612 } while (--timeout);
613 if (timeout <= 0) {
614 ret = func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x0);
615 break;
616 }
617
618 if (!ret)
619 break;
620
621 if (entries == 0) {
622 ret = func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, ®);
623 if (!ret)
624 break;
625 reg &= ~BIT(0);
626 ret = func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, reg);
627 if (!ret)
628 break;
629 break;
630 }
631 break;
632 } while (1);
633
634 if (!ret)
635 goto out_release_bus;
636
637 if (entries == 0) {
638 ret = WILC_TX_ERR_NO_BUF;
639 goto out_release_bus;
640 }
641
642 release_bus(wilc, RELEASE_ALLOW_SLEEP);
643
644 offset = 0;
645 i = 0;
646 do {
647 u32 header, buffer_offset;
648 char *bssid;
649
650 tqe = wilc_wlan_txq_remove_from_head(dev);
651 if (!tqe)
652 break;
653
654 if (vmm_table[i] == 0)
655 break;
656
657 le32_to_cpus(&vmm_table[i]);
658 vmm_sz = (vmm_table[i] & 0x3ff);
659 vmm_sz *= 4;
660 header = (tqe->type << 31) |
661 (tqe->buffer_size << 15) |
662 vmm_sz;
663 if (tqe->type == WILC_MGMT_PKT)
664 header |= BIT(30);
665 else
666 header &= ~BIT(30);
667
668 cpu_to_le32s(&header);
669 memcpy(&txb[offset], &header, 4);
670 if (tqe->type == WILC_CFG_PKT) {
671 buffer_offset = ETH_CONFIG_PKT_HDR_OFFSET;
672 } else if (tqe->type == WILC_NET_PKT) {
673 bssid = ((struct tx_complete_data *)(tqe->priv))->bssid;
674
675 buffer_offset = ETH_ETHERNET_HDR_OFFSET;
676 memcpy(&txb[offset + 8], bssid, 6);
677 } else {
678 buffer_offset = HOST_HDR_OFFSET;
679 }
680
681 memcpy(&txb[offset + buffer_offset],
682 tqe->buffer, tqe->buffer_size);
683 offset += vmm_sz;
684 i++;
685 tqe->status = 1;
686 if (tqe->tx_complete_func)
687 tqe->tx_complete_func(tqe->priv, tqe->status);
688 if (tqe->tcp_pending_ack_idx != NOT_TCP_ACK &&
689 tqe->tcp_pending_ack_idx < MAX_PENDING_ACKS)
690 pending_acks_info[tqe->tcp_pending_ack_idx].txqe = NULL;
691 kfree(tqe);
692 } while (--entries);
693
694 acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
695
696 ret = func->hif_clear_int_ext(wilc, ENABLE_TX_VMM);
697 if (!ret)
698 goto out_release_bus;
699
700 ret = func->hif_block_tx_ext(wilc, 0, txb, offset);
701
702 out_release_bus:
703 release_bus(wilc, RELEASE_ALLOW_SLEEP);
704
705 out:
706 mutex_unlock(&wilc->txq_add_to_head_cs);
707
708 *txq_count = wilc->txq_entries;
709 return ret;
710 }
711
wilc_wlan_handle_rx_buff(struct wilc * wilc,u8 * buffer,int size)712 static void wilc_wlan_handle_rx_buff(struct wilc *wilc, u8 *buffer, int size)
713 {
714 int offset = 0;
715 u32 header;
716 u32 pkt_len, pkt_offset, tp_len;
717 int is_cfg_packet;
718 u8 *buff_ptr;
719
720 do {
721 buff_ptr = buffer + offset;
722 memcpy(&header, buff_ptr, 4);
723 le32_to_cpus(&header);
724
725 is_cfg_packet = (header >> 31) & 0x1;
726 pkt_offset = (header >> 22) & 0x1ff;
727 tp_len = (header >> 11) & 0x7ff;
728 pkt_len = header & 0x7ff;
729
730 if (pkt_len == 0 || tp_len == 0)
731 break;
732
733 if (pkt_offset & IS_MANAGMEMENT) {
734 pkt_offset &= ~(IS_MANAGMEMENT |
735 IS_MANAGMEMENT_CALLBACK |
736 IS_MGMT_STATUS_SUCCES);
737 buff_ptr += HOST_HDR_OFFSET;
738 wilc_wfi_mgmt_rx(wilc, buff_ptr, pkt_len);
739 } else {
740 if (!is_cfg_packet) {
741 if (pkt_len > 0) {
742 wilc_frmw_to_linux(wilc, buff_ptr,
743 pkt_len,
744 pkt_offset);
745 }
746 } else {
747 struct wilc_cfg_rsp rsp;
748
749 buff_ptr += pkt_offset;
750
751 wilc_wlan_cfg_indicate_rx(wilc, buff_ptr,
752 pkt_len,
753 &rsp);
754 if (rsp.type == WILC_CFG_RSP) {
755 if (wilc->cfg_seq_no == rsp.seq_no)
756 complete(&wilc->cfg_event);
757 } else if (rsp.type == WILC_CFG_RSP_STATUS) {
758 wilc_mac_indicate(wilc);
759 }
760 }
761 }
762 offset += tp_len;
763 if (offset >= size)
764 break;
765 } while (1);
766 }
767
wilc_wlan_handle_rxq(struct wilc * wilc)768 static void wilc_wlan_handle_rxq(struct wilc *wilc)
769 {
770 int size;
771 u8 *buffer;
772 struct rxq_entry_t *rqe;
773
774 do {
775 if (wilc->quit) {
776 complete(&wilc->cfg_event);
777 break;
778 }
779 rqe = wilc_wlan_rxq_remove(wilc);
780 if (!rqe)
781 break;
782
783 buffer = rqe->buffer;
784 size = rqe->buffer_size;
785 wilc_wlan_handle_rx_buff(wilc, buffer, size);
786
787 kfree(rqe);
788 } while (1);
789 }
790
wilc_unknown_isr_ext(struct wilc * wilc)791 static void wilc_unknown_isr_ext(struct wilc *wilc)
792 {
793 wilc->hif_func->hif_clear_int_ext(wilc, 0);
794 }
795
wilc_pllupdate_isr_ext(struct wilc * wilc,u32 int_stats)796 static void wilc_pllupdate_isr_ext(struct wilc *wilc, u32 int_stats)
797 {
798 int trials = 10;
799
800 wilc->hif_func->hif_clear_int_ext(wilc, PLL_INT_CLR);
801
802 if (wilc->io_type == HIF_SDIO)
803 mdelay(WILC_PLL_TO_SDIO);
804 else
805 mdelay(WILC_PLL_TO_SPI);
806
807 while (!(is_wilc1000(wilc_get_chipid(wilc, true)) && --trials))
808 mdelay(1);
809 }
810
wilc_sleeptimer_isr_ext(struct wilc * wilc,u32 int_stats1)811 static void wilc_sleeptimer_isr_ext(struct wilc *wilc, u32 int_stats1)
812 {
813 wilc->hif_func->hif_clear_int_ext(wilc, SLEEP_INT_CLR);
814 }
815
wilc_wlan_handle_isr_ext(struct wilc * wilc,u32 int_status)816 static void wilc_wlan_handle_isr_ext(struct wilc *wilc, u32 int_status)
817 {
818 u32 offset = wilc->rx_buffer_offset;
819 u8 *buffer = NULL;
820 u32 size;
821 u32 retries = 0;
822 int ret = 0;
823 struct rxq_entry_t *rqe;
824
825 size = (int_status & 0x7fff) << 2;
826
827 while (!size && retries < 10) {
828 wilc->hif_func->hif_read_size(wilc, &size);
829 size = (size & 0x7fff) << 2;
830 retries++;
831 }
832
833 if (size <= 0)
834 return;
835
836 if (LINUX_RX_SIZE - offset < size)
837 offset = 0;
838
839 buffer = &wilc->rx_buffer[offset];
840
841 wilc->hif_func->hif_clear_int_ext(wilc, DATA_INT_CLR | ENABLE_RX_VMM);
842 ret = wilc->hif_func->hif_block_rx_ext(wilc, 0, buffer, size);
843 if (!ret)
844 return;
845
846 offset += size;
847 wilc->rx_buffer_offset = offset;
848 rqe = kmalloc(sizeof(*rqe), GFP_KERNEL);
849 if (!rqe)
850 return;
851
852 rqe->buffer = buffer;
853 rqe->buffer_size = size;
854 wilc_wlan_rxq_add(wilc, rqe);
855 wilc_wlan_handle_rxq(wilc);
856 }
857
wilc_handle_isr(struct wilc * wilc)858 void wilc_handle_isr(struct wilc *wilc)
859 {
860 u32 int_status;
861
862 acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
863 wilc->hif_func->hif_read_int(wilc, &int_status);
864
865 if (int_status & PLL_INT_EXT)
866 wilc_pllupdate_isr_ext(wilc, int_status);
867
868 if (int_status & DATA_INT_EXT)
869 wilc_wlan_handle_isr_ext(wilc, int_status);
870
871 if (int_status & SLEEP_INT_EXT)
872 wilc_sleeptimer_isr_ext(wilc, int_status);
873
874 if (!(int_status & (ALL_INT_EXT)))
875 wilc_unknown_isr_ext(wilc);
876
877 release_bus(wilc, RELEASE_ALLOW_SLEEP);
878 }
879 EXPORT_SYMBOL_GPL(wilc_handle_isr);
880
wilc_wlan_firmware_download(struct wilc * wilc,const u8 * buffer,u32 buffer_size)881 int wilc_wlan_firmware_download(struct wilc *wilc, const u8 *buffer,
882 u32 buffer_size)
883 {
884 u32 offset;
885 u32 addr, size, size2, blksz;
886 u8 *dma_buffer;
887 int ret = 0;
888
889 blksz = BIT(12);
890
891 dma_buffer = kmalloc(blksz, GFP_KERNEL);
892 if (!dma_buffer)
893 return -EIO;
894
895 offset = 0;
896 do {
897 memcpy(&addr, &buffer[offset], 4);
898 memcpy(&size, &buffer[offset + 4], 4);
899 le32_to_cpus(&addr);
900 le32_to_cpus(&size);
901 acquire_bus(wilc, ACQUIRE_ONLY);
902 offset += 8;
903 while (((int)size) && (offset < buffer_size)) {
904 if (size <= blksz)
905 size2 = size;
906 else
907 size2 = blksz;
908
909 memcpy(dma_buffer, &buffer[offset], size2);
910 ret = wilc->hif_func->hif_block_tx(wilc, addr,
911 dma_buffer, size2);
912 if (!ret)
913 break;
914
915 addr += size2;
916 offset += size2;
917 size -= size2;
918 }
919 release_bus(wilc, RELEASE_ONLY);
920
921 if (!ret) {
922 ret = -EIO;
923 goto fail;
924 }
925 } while (offset < buffer_size);
926
927 fail:
928
929 kfree(dma_buffer);
930
931 return (ret < 0) ? ret : 0;
932 }
933
wilc_wlan_start(struct wilc * wilc)934 int wilc_wlan_start(struct wilc *wilc)
935 {
936 u32 reg = 0;
937 int ret;
938 u32 chipid;
939
940 if (wilc->io_type == HIF_SDIO) {
941 reg = 0;
942 reg |= BIT(3);
943 } else if (wilc->io_type == HIF_SPI) {
944 reg = 1;
945 }
946 acquire_bus(wilc, ACQUIRE_ONLY);
947 ret = wilc->hif_func->hif_write_reg(wilc, WILC_VMM_CORE_CFG, reg);
948 if (!ret) {
949 release_bus(wilc, RELEASE_ONLY);
950 return -EIO;
951 }
952 reg = 0;
953 if (wilc->io_type == HIF_SDIO && wilc->dev_irq_num)
954 reg |= WILC_HAVE_SDIO_IRQ_GPIO;
955
956 #ifdef WILC_DISABLE_PMU
957 #else
958 reg |= WILC_HAVE_USE_PMU;
959 #endif
960
961 #ifdef WILC_SLEEP_CLK_SRC_XO
962 reg |= WILC_HAVE_SLEEP_CLK_SRC_XO;
963 #elif defined WILC_SLEEP_CLK_SRC_RTC
964 reg |= WILC_HAVE_SLEEP_CLK_SRC_RTC;
965 #endif
966
967 #ifdef WILC_EXT_PA_INV_TX_RX
968 reg |= WILC_HAVE_EXT_PA_INV_TX_RX;
969 #endif
970 reg |= WILC_HAVE_USE_IRQ_AS_HOST_WAKE;
971 reg |= WILC_HAVE_LEGACY_RF_SETTINGS;
972 #ifdef XTAL_24
973 reg |= WILC_HAVE_XTAL_24;
974 #endif
975 #ifdef DISABLE_WILC_UART
976 reg |= WILC_HAVE_DISABLE_WILC_UART;
977 #endif
978
979 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_1, reg);
980 if (!ret) {
981 release_bus(wilc, RELEASE_ONLY);
982 return -EIO;
983 }
984
985 wilc->hif_func->hif_sync_ext(wilc, NUM_INT_EXT);
986
987 ret = wilc->hif_func->hif_read_reg(wilc, 0x1000, &chipid);
988 if (!ret) {
989 release_bus(wilc, RELEASE_ONLY);
990 return -EIO;
991 }
992
993 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®);
994 if ((reg & BIT(10)) == BIT(10)) {
995 reg &= ~BIT(10);
996 wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
997 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®);
998 }
999
1000 reg |= BIT(10);
1001 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1002 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®);
1003 release_bus(wilc, RELEASE_ONLY);
1004
1005 return (ret < 0) ? ret : 0;
1006 }
1007
wilc_wlan_stop(struct wilc * wilc)1008 int wilc_wlan_stop(struct wilc *wilc)
1009 {
1010 u32 reg = 0;
1011 int ret;
1012 u8 timeout = 10;
1013
1014 acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
1015
1016 ret = wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®);
1017 if (!ret) {
1018 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1019 return ret;
1020 }
1021
1022 reg &= ~BIT(10);
1023 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1024 if (!ret) {
1025 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1026 return ret;
1027 }
1028
1029 do {
1030 ret = wilc->hif_func->hif_read_reg(wilc,
1031 WILC_GLB_RESET_0, ®);
1032 if (!ret) {
1033 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1034 return ret;
1035 }
1036
1037 if ((reg & BIT(10))) {
1038 reg &= ~BIT(10);
1039 ret = wilc->hif_func->hif_write_reg(wilc,
1040 WILC_GLB_RESET_0,
1041 reg);
1042 timeout--;
1043 } else {
1044 ret = wilc->hif_func->hif_read_reg(wilc,
1045 WILC_GLB_RESET_0,
1046 ®);
1047 if (!ret) {
1048 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1049 return ret;
1050 }
1051 break;
1052 }
1053
1054 } while (timeout);
1055 reg = (BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(8) | BIT(9) | BIT(26) |
1056 BIT(29) | BIT(30) | BIT(31));
1057
1058 wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1059 reg = (u32)~BIT(10);
1060
1061 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1062
1063 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1064
1065 return ret;
1066 }
1067
wilc_wlan_cleanup(struct net_device * dev)1068 void wilc_wlan_cleanup(struct net_device *dev)
1069 {
1070 struct txq_entry_t *tqe;
1071 struct rxq_entry_t *rqe;
1072 u32 reg = 0;
1073 int ret;
1074 struct wilc_vif *vif = netdev_priv(dev);
1075 struct wilc *wilc = vif->wilc;
1076
1077 wilc->quit = 1;
1078 do {
1079 tqe = wilc_wlan_txq_remove_from_head(dev);
1080 if (!tqe)
1081 break;
1082 if (tqe->tx_complete_func)
1083 tqe->tx_complete_func(tqe->priv, 0);
1084 kfree(tqe);
1085 } while (1);
1086
1087 do {
1088 rqe = wilc_wlan_rxq_remove(wilc);
1089 if (!rqe)
1090 break;
1091 kfree(rqe);
1092 } while (1);
1093
1094 kfree(wilc->rx_buffer);
1095 wilc->rx_buffer = NULL;
1096 kfree(wilc->tx_buffer);
1097 wilc->tx_buffer = NULL;
1098
1099 acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
1100
1101 ret = wilc->hif_func->hif_read_reg(wilc, WILC_GP_REG_0, ®);
1102 if (!ret)
1103 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1104
1105 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_0,
1106 (reg | ABORT_INT));
1107 if (!ret)
1108 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1109
1110 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1111 wilc->hif_func->hif_deinit(NULL);
1112 }
1113
wilc_wlan_cfg_commit(struct wilc_vif * vif,int type,u32 drv_handler)1114 static int wilc_wlan_cfg_commit(struct wilc_vif *vif, int type,
1115 u32 drv_handler)
1116 {
1117 struct wilc *wilc = vif->wilc;
1118 struct wilc_cfg_frame *cfg = &wilc->cfg_frame;
1119 int total_len = wilc->cfg_frame_offset + 4 + DRIVER_HANDLER_SIZE;
1120 int seq_no = wilc->cfg_seq_no % 256;
1121 int driver_handler = (u32)drv_handler;
1122
1123 if (type == WILC_CFG_SET)
1124 cfg->wid_header[0] = 'W';
1125 else
1126 cfg->wid_header[0] = 'Q';
1127 cfg->wid_header[1] = seq_no;
1128 cfg->wid_header[2] = (u8)total_len;
1129 cfg->wid_header[3] = (u8)(total_len >> 8);
1130 cfg->wid_header[4] = (u8)driver_handler;
1131 cfg->wid_header[5] = (u8)(driver_handler >> 8);
1132 cfg->wid_header[6] = (u8)(driver_handler >> 16);
1133 cfg->wid_header[7] = (u8)(driver_handler >> 24);
1134 wilc->cfg_seq_no = seq_no;
1135
1136 if (!wilc_wlan_txq_add_cfg_pkt(vif, &cfg->wid_header[0], total_len))
1137 return -1;
1138
1139 return 0;
1140 }
1141
wilc_wlan_cfg_set(struct wilc_vif * vif,int start,u16 wid,u8 * buffer,u32 buffer_size,int commit,u32 drv_handler)1142 int wilc_wlan_cfg_set(struct wilc_vif *vif, int start, u16 wid, u8 *buffer,
1143 u32 buffer_size, int commit, u32 drv_handler)
1144 {
1145 u32 offset;
1146 int ret_size;
1147 struct wilc *wilc = vif->wilc;
1148
1149 if (wilc->cfg_frame_in_use)
1150 return 0;
1151
1152 if (start)
1153 wilc->cfg_frame_offset = 0;
1154
1155 offset = wilc->cfg_frame_offset;
1156 ret_size = wilc_wlan_cfg_set_wid(wilc->cfg_frame.frame, offset,
1157 wid, buffer, buffer_size);
1158 offset += ret_size;
1159 wilc->cfg_frame_offset = offset;
1160
1161 if (!commit)
1162 return ret_size;
1163
1164 netdev_dbg(vif->ndev, "%s: seqno[%d]\n", __func__, wilc->cfg_seq_no);
1165 wilc->cfg_frame_in_use = 1;
1166
1167 if (wilc_wlan_cfg_commit(vif, WILC_CFG_SET, drv_handler))
1168 ret_size = 0;
1169
1170 if (!wait_for_completion_timeout(&wilc->cfg_event,
1171 msecs_to_jiffies(CFG_PKTS_TIMEOUT))) {
1172 netdev_dbg(vif->ndev, "%s: Timed Out\n", __func__);
1173 ret_size = 0;
1174 }
1175
1176 wilc->cfg_frame_in_use = 0;
1177 wilc->cfg_frame_offset = 0;
1178 wilc->cfg_seq_no += 1;
1179
1180 return ret_size;
1181 }
1182
wilc_wlan_cfg_get(struct wilc_vif * vif,int start,u16 wid,int commit,u32 drv_handler)1183 int wilc_wlan_cfg_get(struct wilc_vif *vif, int start, u16 wid, int commit,
1184 u32 drv_handler)
1185 {
1186 u32 offset;
1187 int ret_size;
1188 struct wilc *wilc = vif->wilc;
1189
1190 if (wilc->cfg_frame_in_use)
1191 return 0;
1192
1193 if (start)
1194 wilc->cfg_frame_offset = 0;
1195
1196 offset = wilc->cfg_frame_offset;
1197 ret_size = wilc_wlan_cfg_get_wid(wilc->cfg_frame.frame, offset, wid);
1198 offset += ret_size;
1199 wilc->cfg_frame_offset = offset;
1200
1201 if (!commit)
1202 return ret_size;
1203
1204 wilc->cfg_frame_in_use = 1;
1205
1206 if (wilc_wlan_cfg_commit(vif, WILC_CFG_QUERY, drv_handler))
1207 ret_size = 0;
1208
1209 if (!wait_for_completion_timeout(&wilc->cfg_event,
1210 msecs_to_jiffies(CFG_PKTS_TIMEOUT))) {
1211 netdev_dbg(vif->ndev, "%s: Timed Out\n", __func__);
1212 ret_size = 0;
1213 }
1214 wilc->cfg_frame_in_use = 0;
1215 wilc->cfg_frame_offset = 0;
1216 wilc->cfg_seq_no += 1;
1217
1218 return ret_size;
1219 }
1220
wilc_wlan_cfg_get_val(u16 wid,u8 * buffer,u32 buffer_size)1221 int wilc_wlan_cfg_get_val(u16 wid, u8 *buffer, u32 buffer_size)
1222 {
1223 return wilc_wlan_cfg_get_wid_value(wid, buffer, buffer_size);
1224 }
1225
wilc_send_config_pkt(struct wilc_vif * vif,u8 mode,struct wid * wids,u32 count,u32 drv)1226 int wilc_send_config_pkt(struct wilc_vif *vif, u8 mode, struct wid *wids,
1227 u32 count, u32 drv)
1228 {
1229 int i;
1230 int ret = 0;
1231
1232 if (mode == GET_CFG) {
1233 for (i = 0; i < count; i++) {
1234 if (!wilc_wlan_cfg_get(vif, !i,
1235 wids[i].id,
1236 (i == count - 1),
1237 drv)) {
1238 ret = -ETIMEDOUT;
1239 break;
1240 }
1241 }
1242 for (i = 0; i < count; i++) {
1243 wids[i].size = wilc_wlan_cfg_get_val(wids[i].id,
1244 wids[i].val,
1245 wids[i].size);
1246 }
1247 } else if (mode == SET_CFG) {
1248 for (i = 0; i < count; i++) {
1249 if (!wilc_wlan_cfg_set(vif, !i,
1250 wids[i].id,
1251 wids[i].val,
1252 wids[i].size,
1253 (i == count - 1),
1254 drv)) {
1255 ret = -ETIMEDOUT;
1256 break;
1257 }
1258 }
1259 }
1260
1261 return ret;
1262 }
1263
init_chip(struct net_device * dev)1264 static u32 init_chip(struct net_device *dev)
1265 {
1266 u32 chipid;
1267 u32 reg, ret = 0;
1268 struct wilc_vif *vif = netdev_priv(dev);
1269 struct wilc *wilc = vif->wilc;
1270
1271 acquire_bus(wilc, ACQUIRE_ONLY);
1272
1273 chipid = wilc_get_chipid(wilc, true);
1274
1275 if ((chipid & 0xfff) != 0xa0) {
1276 ret = wilc->hif_func->hif_read_reg(wilc, 0x1118, ®);
1277 if (!ret) {
1278 netdev_err(dev, "fail read reg 0x1118\n");
1279 return ret;
1280 }
1281 reg |= BIT(0);
1282 ret = wilc->hif_func->hif_write_reg(wilc, 0x1118, reg);
1283 if (!ret) {
1284 netdev_err(dev, "fail write reg 0x1118\n");
1285 return ret;
1286 }
1287 ret = wilc->hif_func->hif_write_reg(wilc, 0xc0000, 0x71);
1288 if (!ret) {
1289 netdev_err(dev, "fail write reg 0xc0000\n");
1290 return ret;
1291 }
1292 }
1293
1294 release_bus(wilc, RELEASE_ONLY);
1295
1296 return ret;
1297 }
1298
wilc_get_chipid(struct wilc * wilc,bool update)1299 u32 wilc_get_chipid(struct wilc *wilc, bool update)
1300 {
1301 static u32 chipid;
1302 u32 tempchipid = 0;
1303 u32 rfrevid = 0;
1304
1305 if (chipid == 0 || update) {
1306 wilc->hif_func->hif_read_reg(wilc, 0x1000, &tempchipid);
1307 wilc->hif_func->hif_read_reg(wilc, 0x13f4, &rfrevid);
1308 if (!is_wilc1000(tempchipid)) {
1309 chipid = 0;
1310 return chipid;
1311 }
1312 if (tempchipid == 0x1002a0) {
1313 if (rfrevid != 0x1)
1314 tempchipid = 0x1002a1;
1315 } else if (tempchipid == 0x1002b0) {
1316 if (rfrevid == 0x4)
1317 tempchipid = 0x1002b1;
1318 else if (rfrevid != 0x3)
1319 tempchipid = 0x1002b2;
1320 }
1321
1322 chipid = tempchipid;
1323 }
1324 return chipid;
1325 }
1326
wilc_wlan_init(struct net_device * dev)1327 int wilc_wlan_init(struct net_device *dev)
1328 {
1329 int ret = 0;
1330 struct wilc_vif *vif = netdev_priv(dev);
1331 struct wilc *wilc;
1332
1333 wilc = vif->wilc;
1334
1335 wilc->quit = 0;
1336
1337 if (!wilc->hif_func->hif_init(wilc, false)) {
1338 ret = -EIO;
1339 goto fail;
1340 }
1341
1342 if (!wilc_wlan_cfg_init()) {
1343 ret = -ENOBUFS;
1344 goto fail;
1345 }
1346
1347 if (!wilc->tx_buffer)
1348 wilc->tx_buffer = kmalloc(LINUX_TX_SIZE, GFP_KERNEL);
1349
1350 if (!wilc->tx_buffer) {
1351 ret = -ENOBUFS;
1352 goto fail;
1353 }
1354
1355 if (!wilc->rx_buffer)
1356 wilc->rx_buffer = kmalloc(LINUX_RX_SIZE, GFP_KERNEL);
1357
1358 if (!wilc->rx_buffer) {
1359 ret = -ENOBUFS;
1360 goto fail;
1361 }
1362
1363 if (!init_chip(dev)) {
1364 ret = -EIO;
1365 goto fail;
1366 }
1367
1368 return 1;
1369
1370 fail:
1371
1372 kfree(wilc->rx_buffer);
1373 wilc->rx_buffer = NULL;
1374 kfree(wilc->tx_buffer);
1375 wilc->tx_buffer = NULL;
1376
1377 return ret;
1378 }
1379
