This source file includes following definitions.
- is_wilc1000
- acquire_bus
- release_bus
- wilc_wlan_txq_remove
- wilc_wlan_txq_remove_from_head
- wilc_wlan_txq_add_to_tail
- wilc_wlan_txq_add_to_head
- add_tcp_session
- update_tcp_session
- add_tcp_pending_ack
- tcp_process
- wilc_wlan_txq_filter_dup_tcp_ack
- wilc_enable_tcp_ack_filter
- wilc_wlan_txq_add_cfg_pkt
- wilc_wlan_txq_add_net_pkt
- wilc_wlan_txq_add_mgmt_pkt
- wilc_wlan_txq_get_first
- wilc_wlan_txq_get_next
- wilc_wlan_rxq_add
- wilc_wlan_rxq_remove
- chip_allow_sleep
- chip_wakeup
- host_wakeup_notify
- host_sleep_notify
- wilc_wlan_handle_txq
- wilc_wlan_handle_rx_buff
- wilc_wlan_handle_rxq
- wilc_unknown_isr_ext
- wilc_wlan_handle_isr_ext
- wilc_handle_isr
- wilc_wlan_firmware_download
- wilc_wlan_start
- wilc_wlan_stop
- wilc_wlan_cleanup
- wilc_wlan_cfg_commit
- wilc_wlan_cfg_set
- wilc_wlan_cfg_get
- wilc_send_config_pkt
- init_chip
- wilc_get_chipid
- wilc_wlan_init
1
2
3
4
5
6
7 #include <linux/if_ether.h>
8 #include <linux/ip.h>
9 #include "wilc_wfi_cfgoperations.h"
10 #include "wilc_wlan_cfg.h"
11
12 static inline bool is_wilc1000(u32 id)
13 {
14 return (id & 0xfffff000) == 0x100000;
15 }
16
17 static inline void acquire_bus(struct wilc *wilc, enum bus_acquire acquire)
18 {
19 mutex_lock(&wilc->hif_cs);
20 if (acquire == WILC_BUS_ACQUIRE_AND_WAKEUP)
21 chip_wakeup(wilc);
22 }
23
24 static inline void release_bus(struct wilc *wilc, enum bus_release release)
25 {
26 if (release == WILC_BUS_RELEASE_ALLOW_SLEEP)
27 chip_allow_sleep(wilc);
28 mutex_unlock(&wilc->hif_cs);
29 }
30
31 static void wilc_wlan_txq_remove(struct wilc *wilc, struct txq_entry_t *tqe)
32 {
33 list_del(&tqe->list);
34 wilc->txq_entries -= 1;
35 }
36
37 static struct txq_entry_t *
38 wilc_wlan_txq_remove_from_head(struct net_device *dev)
39 {
40 struct txq_entry_t *tqe = NULL;
41 unsigned long flags;
42 struct wilc_vif *vif = netdev_priv(dev);
43 struct wilc *wilc = vif->wilc;
44
45 spin_lock_irqsave(&wilc->txq_spinlock, flags);
46
47 if (!list_empty(&wilc->txq_head.list)) {
48 tqe = list_first_entry(&wilc->txq_head.list, struct txq_entry_t,
49 list);
50 list_del(&tqe->list);
51 wilc->txq_entries -= 1;
52 }
53 spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
54 return tqe;
55 }
56
57 static void wilc_wlan_txq_add_to_tail(struct net_device *dev,
58 struct txq_entry_t *tqe)
59 {
60 unsigned long flags;
61 struct wilc_vif *vif = netdev_priv(dev);
62 struct wilc *wilc = vif->wilc;
63
64 spin_lock_irqsave(&wilc->txq_spinlock, flags);
65
66 list_add_tail(&tqe->list, &wilc->txq_head.list);
67 wilc->txq_entries += 1;
68
69 spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
70
71 complete(&wilc->txq_event);
72 }
73
74 static void wilc_wlan_txq_add_to_head(struct wilc_vif *vif,
75 struct txq_entry_t *tqe)
76 {
77 unsigned long flags;
78 struct wilc *wilc = vif->wilc;
79
80 mutex_lock(&wilc->txq_add_to_head_cs);
81
82 spin_lock_irqsave(&wilc->txq_spinlock, flags);
83
84 list_add(&tqe->list, &wilc->txq_head.list);
85 wilc->txq_entries += 1;
86
87 spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
88 mutex_unlock(&wilc->txq_add_to_head_cs);
89 complete(&wilc->txq_event);
90 }
91
92 #define NOT_TCP_ACK (-1)
93
94 static inline void add_tcp_session(struct wilc_vif *vif, u32 src_prt,
95 u32 dst_prt, u32 seq)
96 {
97 struct tcp_ack_filter *f = &vif->ack_filter;
98
99 if (f->tcp_session < 2 * MAX_TCP_SESSION) {
100 f->ack_session_info[f->tcp_session].seq_num = seq;
101 f->ack_session_info[f->tcp_session].bigger_ack_num = 0;
102 f->ack_session_info[f->tcp_session].src_port = src_prt;
103 f->ack_session_info[f->tcp_session].dst_port = dst_prt;
104 f->tcp_session++;
105 }
106 }
107
108 static inline void update_tcp_session(struct wilc_vif *vif, u32 index, u32 ack)
109 {
110 struct tcp_ack_filter *f = &vif->ack_filter;
111
112 if (index < 2 * MAX_TCP_SESSION &&
113 ack > f->ack_session_info[index].bigger_ack_num)
114 f->ack_session_info[index].bigger_ack_num = ack;
115 }
116
117 static inline void add_tcp_pending_ack(struct wilc_vif *vif, u32 ack,
118 u32 session_index,
119 struct txq_entry_t *txqe)
120 {
121 struct tcp_ack_filter *f = &vif->ack_filter;
122 u32 i = f->pending_base + f->pending_acks_idx;
123
124 if (i < MAX_PENDING_ACKS) {
125 f->pending_acks[i].ack_num = ack;
126 f->pending_acks[i].txqe = txqe;
127 f->pending_acks[i].session_index = session_index;
128 txqe->ack_idx = i;
129 f->pending_acks_idx++;
130 }
131 }
132
133 static inline void tcp_process(struct net_device *dev, struct txq_entry_t *tqe)
134 {
135 void *buffer = tqe->buffer;
136 const struct ethhdr *eth_hdr_ptr = buffer;
137 int i;
138 unsigned long flags;
139 struct wilc_vif *vif = netdev_priv(dev);
140 struct wilc *wilc = vif->wilc;
141 struct tcp_ack_filter *f = &vif->ack_filter;
142 const struct iphdr *ip_hdr_ptr;
143 const struct tcphdr *tcp_hdr_ptr;
144 u32 ihl, total_length, data_offset;
145
146 spin_lock_irqsave(&wilc->txq_spinlock, flags);
147
148 if (eth_hdr_ptr->h_proto != htons(ETH_P_IP))
149 goto out;
150
151 ip_hdr_ptr = buffer + ETH_HLEN;
152
153 if (ip_hdr_ptr->protocol != IPPROTO_TCP)
154 goto out;
155
156 ihl = ip_hdr_ptr->ihl << 2;
157 tcp_hdr_ptr = buffer + ETH_HLEN + ihl;
158 total_length = ntohs(ip_hdr_ptr->tot_len);
159
160 data_offset = tcp_hdr_ptr->doff << 2;
161 if (total_length == (ihl + data_offset)) {
162 u32 seq_no, ack_no;
163
164 seq_no = ntohl(tcp_hdr_ptr->seq);
165 ack_no = ntohl(tcp_hdr_ptr->ack_seq);
166 for (i = 0; i < f->tcp_session; i++) {
167 u32 j = f->ack_session_info[i].seq_num;
168
169 if (i < 2 * MAX_TCP_SESSION &&
170 j == seq_no) {
171 update_tcp_session(vif, i, ack_no);
172 break;
173 }
174 }
175 if (i == f->tcp_session)
176 add_tcp_session(vif, 0, 0, seq_no);
177
178 add_tcp_pending_ack(vif, ack_no, i, tqe);
179 }
180
181 out:
182 spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
183 }
184
185 static void wilc_wlan_txq_filter_dup_tcp_ack(struct net_device *dev)
186 {
187 struct wilc_vif *vif = netdev_priv(dev);
188 struct wilc *wilc = vif->wilc;
189 struct tcp_ack_filter *f = &vif->ack_filter;
190 u32 i = 0;
191 u32 dropped = 0;
192 unsigned long flags;
193
194 spin_lock_irqsave(&wilc->txq_spinlock, flags);
195 for (i = f->pending_base;
196 i < (f->pending_base + f->pending_acks_idx); i++) {
197 u32 index;
198 u32 bigger_ack_num;
199
200 if (i >= MAX_PENDING_ACKS)
201 break;
202
203 index = f->pending_acks[i].session_index;
204
205 if (index >= 2 * MAX_TCP_SESSION)
206 break;
207
208 bigger_ack_num = f->ack_session_info[index].bigger_ack_num;
209
210 if (f->pending_acks[i].ack_num < bigger_ack_num) {
211 struct txq_entry_t *tqe;
212
213 tqe = f->pending_acks[i].txqe;
214 if (tqe) {
215 wilc_wlan_txq_remove(wilc, tqe);
216 tqe->status = 1;
217 if (tqe->tx_complete_func)
218 tqe->tx_complete_func(tqe->priv,
219 tqe->status);
220 kfree(tqe);
221 dropped++;
222 }
223 }
224 }
225 f->pending_acks_idx = 0;
226 f->tcp_session = 0;
227
228 if (f->pending_base == 0)
229 f->pending_base = MAX_TCP_SESSION;
230 else
231 f->pending_base = 0;
232
233 spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
234
235 while (dropped > 0) {
236 wait_for_completion_timeout(&wilc->txq_event,
237 msecs_to_jiffies(1));
238 dropped--;
239 }
240 }
241
242 void wilc_enable_tcp_ack_filter(struct wilc_vif *vif, bool value)
243 {
244 vif->ack_filter.enabled = value;
245 }
246
247 static int wilc_wlan_txq_add_cfg_pkt(struct wilc_vif *vif, u8 *buffer,
248 u32 buffer_size)
249 {
250 struct txq_entry_t *tqe;
251 struct wilc *wilc = vif->wilc;
252
253 netdev_dbg(vif->ndev, "Adding config packet ...\n");
254 if (wilc->quit) {
255 netdev_dbg(vif->ndev, "Return due to clear function\n");
256 complete(&wilc->cfg_event);
257 return 0;
258 }
259
260 tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
261 if (!tqe)
262 return 0;
263
264 tqe->type = WILC_CFG_PKT;
265 tqe->buffer = buffer;
266 tqe->buffer_size = buffer_size;
267 tqe->tx_complete_func = NULL;
268 tqe->priv = NULL;
269 tqe->ack_idx = NOT_TCP_ACK;
270 tqe->vif = vif;
271
272 wilc_wlan_txq_add_to_head(vif, tqe);
273
274 return 1;
275 }
276
277 int wilc_wlan_txq_add_net_pkt(struct net_device *dev, void *priv, u8 *buffer,
278 u32 buffer_size,
279 void (*tx_complete_fn)(void *, int))
280 {
281 struct txq_entry_t *tqe;
282 struct wilc_vif *vif = netdev_priv(dev);
283 struct wilc *wilc;
284
285 wilc = vif->wilc;
286
287 if (wilc->quit)
288 return 0;
289
290 tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
291
292 if (!tqe)
293 return 0;
294 tqe->type = WILC_NET_PKT;
295 tqe->buffer = buffer;
296 tqe->buffer_size = buffer_size;
297 tqe->tx_complete_func = tx_complete_fn;
298 tqe->priv = priv;
299 tqe->vif = vif;
300
301 tqe->ack_idx = NOT_TCP_ACK;
302 if (vif->ack_filter.enabled)
303 tcp_process(dev, tqe);
304 wilc_wlan_txq_add_to_tail(dev, tqe);
305 return wilc->txq_entries;
306 }
307
308 int wilc_wlan_txq_add_mgmt_pkt(struct net_device *dev, void *priv, u8 *buffer,
309 u32 buffer_size,
310 void (*tx_complete_fn)(void *, int))
311 {
312 struct txq_entry_t *tqe;
313 struct wilc_vif *vif = netdev_priv(dev);
314 struct wilc *wilc;
315
316 wilc = vif->wilc;
317
318 if (wilc->quit)
319 return 0;
320
321 tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
322
323 if (!tqe)
324 return 0;
325 tqe->type = WILC_MGMT_PKT;
326 tqe->buffer = buffer;
327 tqe->buffer_size = buffer_size;
328 tqe->tx_complete_func = tx_complete_fn;
329 tqe->priv = priv;
330 tqe->ack_idx = NOT_TCP_ACK;
331 tqe->vif = vif;
332 wilc_wlan_txq_add_to_tail(dev, tqe);
333 return 1;
334 }
335
336 static struct txq_entry_t *wilc_wlan_txq_get_first(struct wilc *wilc)
337 {
338 struct txq_entry_t *tqe = NULL;
339 unsigned long flags;
340
341 spin_lock_irqsave(&wilc->txq_spinlock, flags);
342
343 if (!list_empty(&wilc->txq_head.list))
344 tqe = list_first_entry(&wilc->txq_head.list, struct txq_entry_t,
345 list);
346
347 spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
348
349 return tqe;
350 }
351
352 static struct txq_entry_t *wilc_wlan_txq_get_next(struct wilc *wilc,
353 struct txq_entry_t *tqe)
354 {
355 unsigned long flags;
356
357 spin_lock_irqsave(&wilc->txq_spinlock, flags);
358
359 if (!list_is_last(&tqe->list, &wilc->txq_head.list))
360 tqe = list_next_entry(tqe, list);
361 else
362 tqe = NULL;
363 spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
364
365 return tqe;
366 }
367
368 static void wilc_wlan_rxq_add(struct wilc *wilc, struct rxq_entry_t *rqe)
369 {
370 if (wilc->quit)
371 return;
372
373 mutex_lock(&wilc->rxq_cs);
374 list_add_tail(&rqe->list, &wilc->rxq_head.list);
375 mutex_unlock(&wilc->rxq_cs);
376 }
377
378 static struct rxq_entry_t *wilc_wlan_rxq_remove(struct wilc *wilc)
379 {
380 struct rxq_entry_t *rqe = NULL;
381
382 mutex_lock(&wilc->rxq_cs);
383 if (!list_empty(&wilc->rxq_head.list)) {
384 rqe = list_first_entry(&wilc->rxq_head.list, struct rxq_entry_t,
385 list);
386 list_del(&rqe->list);
387 }
388 mutex_unlock(&wilc->rxq_cs);
389 return rqe;
390 }
391
392 void chip_allow_sleep(struct wilc *wilc)
393 {
394 u32 reg = 0;
395
396 wilc->hif_func->hif_read_reg(wilc, 0xf0, ®);
397
398 wilc->hif_func->hif_write_reg(wilc, 0xf0, reg & ~BIT(0));
399 wilc->hif_func->hif_write_reg(wilc, 0xfa, 0);
400 }
401 EXPORT_SYMBOL_GPL(chip_allow_sleep);
402
403 void chip_wakeup(struct wilc *wilc)
404 {
405 u32 reg, clk_status_reg;
406
407 if ((wilc->io_type & 0x1) == WILC_HIF_SPI) {
408 do {
409 wilc->hif_func->hif_read_reg(wilc, 1, ®);
410 wilc->hif_func->hif_write_reg(wilc, 1, reg | BIT(1));
411 wilc->hif_func->hif_write_reg(wilc, 1, reg & ~BIT(1));
412
413 do {
414 usleep_range(2000, 2500);
415 wilc_get_chipid(wilc, true);
416 } while (wilc_get_chipid(wilc, true) == 0);
417 } while (wilc_get_chipid(wilc, true) == 0);
418 } else if ((wilc->io_type & 0x1) == WILC_HIF_SDIO) {
419 wilc->hif_func->hif_write_reg(wilc, 0xfa, 1);
420 usleep_range(200, 400);
421 wilc->hif_func->hif_read_reg(wilc, 0xf0, ®);
422 do {
423 wilc->hif_func->hif_write_reg(wilc, 0xf0,
424 reg | BIT(0));
425 wilc->hif_func->hif_read_reg(wilc, 0xf1,
426 &clk_status_reg);
427
428 while ((clk_status_reg & 0x1) == 0) {
429 usleep_range(2000, 2500);
430
431 wilc->hif_func->hif_read_reg(wilc, 0xf1,
432 &clk_status_reg);
433 }
434 if ((clk_status_reg & 0x1) == 0) {
435 wilc->hif_func->hif_write_reg(wilc, 0xf0,
436 reg & (~BIT(0)));
437 }
438 } while ((clk_status_reg & 0x1) == 0);
439 }
440
441 if (wilc->chip_ps_state == WILC_CHIP_SLEEPING_MANUAL) {
442 if (wilc_get_chipid(wilc, false) < 0x1002b0) {
443 u32 val32;
444
445 wilc->hif_func->hif_read_reg(wilc, 0x1e1c, &val32);
446 val32 |= BIT(6);
447 wilc->hif_func->hif_write_reg(wilc, 0x1e1c, val32);
448
449 wilc->hif_func->hif_read_reg(wilc, 0x1e9c, &val32);
450 val32 |= BIT(6);
451 wilc->hif_func->hif_write_reg(wilc, 0x1e9c, val32);
452 }
453 }
454 wilc->chip_ps_state = WILC_CHIP_WAKEDUP;
455 }
456 EXPORT_SYMBOL_GPL(chip_wakeup);
457
458 void host_wakeup_notify(struct wilc *wilc)
459 {
460 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
461 wilc->hif_func->hif_write_reg(wilc, 0x10b0, 1);
462 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
463 }
464 EXPORT_SYMBOL_GPL(host_wakeup_notify);
465
466 void host_sleep_notify(struct wilc *wilc)
467 {
468 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
469 wilc->hif_func->hif_write_reg(wilc, 0x10ac, 1);
470 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
471 }
472 EXPORT_SYMBOL_GPL(host_sleep_notify);
473
474 int wilc_wlan_handle_txq(struct wilc *wilc, u32 *txq_count)
475 {
476 int i, entries = 0;
477 u32 sum;
478 u32 reg;
479 u32 offset = 0;
480 int vmm_sz = 0;
481 struct txq_entry_t *tqe;
482 int ret = 0;
483 int counter;
484 int timeout;
485 u32 vmm_table[WILC_VMM_TBL_SIZE];
486 const struct wilc_hif_func *func;
487 u8 *txb = wilc->tx_buffer;
488 struct net_device *dev;
489 struct wilc_vif *vif;
490
491 if (wilc->quit)
492 goto out;
493
494 mutex_lock(&wilc->txq_add_to_head_cs);
495 tqe = wilc_wlan_txq_get_first(wilc);
496 if (!tqe)
497 goto out;
498 dev = tqe->vif->ndev;
499 wilc_wlan_txq_filter_dup_tcp_ack(dev);
500 i = 0;
501 sum = 0;
502 do {
503 if (tqe && (i < (WILC_VMM_TBL_SIZE - 1))) {
504 if (tqe->type == WILC_CFG_PKT)
505 vmm_sz = ETH_CONFIG_PKT_HDR_OFFSET;
506
507 else if (tqe->type == WILC_NET_PKT)
508 vmm_sz = ETH_ETHERNET_HDR_OFFSET;
509
510 else
511 vmm_sz = HOST_HDR_OFFSET;
512
513 vmm_sz += tqe->buffer_size;
514
515 if (vmm_sz & 0x3)
516 vmm_sz = (vmm_sz + 4) & ~0x3;
517
518 if ((sum + vmm_sz) > WILC_TX_BUFF_SIZE)
519 break;
520
521 vmm_table[i] = vmm_sz / 4;
522 if (tqe->type == WILC_CFG_PKT)
523 vmm_table[i] |= BIT(10);
524 cpu_to_le32s(&vmm_table[i]);
525
526 i++;
527 sum += vmm_sz;
528 tqe = wilc_wlan_txq_get_next(wilc, tqe);
529 } else {
530 break;
531 }
532 } while (1);
533
534 if (i == 0)
535 goto out;
536 vmm_table[i] = 0x0;
537
538 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
539 counter = 0;
540 func = wilc->hif_func;
541 do {
542 ret = func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, ®);
543 if (!ret)
544 break;
545
546 if ((reg & 0x1) == 0)
547 break;
548
549 counter++;
550 if (counter > 200) {
551 counter = 0;
552 ret = func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, 0);
553 break;
554 }
555 } while (!wilc->quit);
556
557 if (!ret)
558 goto out_release_bus;
559
560 timeout = 200;
561 do {
562 ret = func->hif_block_tx(wilc,
563 WILC_VMM_TBL_RX_SHADOW_BASE,
564 (u8 *)vmm_table,
565 ((i + 1) * 4));
566 if (!ret)
567 break;
568
569 ret = func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x2);
570 if (!ret)
571 break;
572
573 do {
574 ret = func->hif_read_reg(wilc, WILC_HOST_VMM_CTL, ®);
575 if (!ret)
576 break;
577 if ((reg >> 2) & 0x1) {
578 entries = ((reg >> 3) & 0x3f);
579 break;
580 }
581 } while (--timeout);
582 if (timeout <= 0) {
583 ret = func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x0);
584 break;
585 }
586
587 if (!ret)
588 break;
589
590 if (entries == 0) {
591 ret = func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, ®);
592 if (!ret)
593 break;
594 reg &= ~BIT(0);
595 ret = func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, reg);
596 if (!ret)
597 break;
598 break;
599 }
600 break;
601 } while (1);
602
603 if (!ret)
604 goto out_release_bus;
605
606 if (entries == 0) {
607 ret = -ENOBUFS;
608 goto out_release_bus;
609 }
610
611 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
612
613 offset = 0;
614 i = 0;
615 do {
616 u32 header, buffer_offset;
617 char *bssid;
618
619 tqe = wilc_wlan_txq_remove_from_head(dev);
620 if (!tqe)
621 break;
622
623 vif = tqe->vif;
624 if (vmm_table[i] == 0)
625 break;
626
627 le32_to_cpus(&vmm_table[i]);
628 vmm_sz = (vmm_table[i] & 0x3ff);
629 vmm_sz *= 4;
630 header = (tqe->type << 31) |
631 (tqe->buffer_size << 15) |
632 vmm_sz;
633 if (tqe->type == WILC_MGMT_PKT)
634 header |= BIT(30);
635 else
636 header &= ~BIT(30);
637
638 cpu_to_le32s(&header);
639 memcpy(&txb[offset], &header, 4);
640 if (tqe->type == WILC_CFG_PKT) {
641 buffer_offset = ETH_CONFIG_PKT_HDR_OFFSET;
642 } else if (tqe->type == WILC_NET_PKT) {
643 bssid = tqe->vif->bssid;
644 buffer_offset = ETH_ETHERNET_HDR_OFFSET;
645 memcpy(&txb[offset + 8], bssid, 6);
646 } else {
647 buffer_offset = HOST_HDR_OFFSET;
648 }
649
650 memcpy(&txb[offset + buffer_offset],
651 tqe->buffer, tqe->buffer_size);
652 offset += vmm_sz;
653 i++;
654 tqe->status = 1;
655 if (tqe->tx_complete_func)
656 tqe->tx_complete_func(tqe->priv, tqe->status);
657 if (tqe->ack_idx != NOT_TCP_ACK &&
658 tqe->ack_idx < MAX_PENDING_ACKS)
659 vif->ack_filter.pending_acks[tqe->ack_idx].txqe = NULL;
660 kfree(tqe);
661 } while (--entries);
662
663 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
664
665 ret = func->hif_clear_int_ext(wilc, ENABLE_TX_VMM);
666 if (!ret)
667 goto out_release_bus;
668
669 ret = func->hif_block_tx_ext(wilc, 0, txb, offset);
670
671 out_release_bus:
672 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
673
674 out:
675 mutex_unlock(&wilc->txq_add_to_head_cs);
676
677 *txq_count = wilc->txq_entries;
678 return ret;
679 }
680
681 static void wilc_wlan_handle_rx_buff(struct wilc *wilc, u8 *buffer, int size)
682 {
683 int offset = 0;
684 u32 header;
685 u32 pkt_len, pkt_offset, tp_len;
686 int is_cfg_packet;
687 u8 *buff_ptr;
688
689 do {
690 buff_ptr = buffer + offset;
691 header = get_unaligned_le32(buff_ptr);
692
693 is_cfg_packet = (header >> 31) & 0x1;
694 pkt_offset = (header >> 22) & 0x1ff;
695 tp_len = (header >> 11) & 0x7ff;
696 pkt_len = header & 0x7ff;
697
698 if (pkt_len == 0 || tp_len == 0)
699 break;
700
701 if (pkt_offset & IS_MANAGMEMENT) {
702 buff_ptr += HOST_HDR_OFFSET;
703 wilc_wfi_mgmt_rx(wilc, buff_ptr, pkt_len);
704 } else {
705 if (!is_cfg_packet) {
706 if (pkt_len > 0) {
707 wilc_frmw_to_host(wilc, buff_ptr,
708 pkt_len, pkt_offset);
709 }
710 } else {
711 struct wilc_cfg_rsp rsp;
712
713 buff_ptr += pkt_offset;
714
715 wilc_wlan_cfg_indicate_rx(wilc, buff_ptr,
716 pkt_len,
717 &rsp);
718 if (rsp.type == WILC_CFG_RSP) {
719 if (wilc->cfg_seq_no == rsp.seq_no)
720 complete(&wilc->cfg_event);
721 } else if (rsp.type == WILC_CFG_RSP_STATUS) {
722 wilc_mac_indicate(wilc);
723 }
724 }
725 }
726 offset += tp_len;
727 if (offset >= size)
728 break;
729 } while (1);
730 }
731
732 static void wilc_wlan_handle_rxq(struct wilc *wilc)
733 {
734 int size;
735 u8 *buffer;
736 struct rxq_entry_t *rqe;
737
738 do {
739 if (wilc->quit) {
740 complete(&wilc->cfg_event);
741 break;
742 }
743 rqe = wilc_wlan_rxq_remove(wilc);
744 if (!rqe)
745 break;
746
747 buffer = rqe->buffer;
748 size = rqe->buffer_size;
749 wilc_wlan_handle_rx_buff(wilc, buffer, size);
750
751 kfree(rqe);
752 } while (1);
753 }
754
755 static void wilc_unknown_isr_ext(struct wilc *wilc)
756 {
757 wilc->hif_func->hif_clear_int_ext(wilc, 0);
758 }
759
760 static void wilc_wlan_handle_isr_ext(struct wilc *wilc, u32 int_status)
761 {
762 u32 offset = wilc->rx_buffer_offset;
763 u8 *buffer = NULL;
764 u32 size;
765 u32 retries = 0;
766 int ret = 0;
767 struct rxq_entry_t *rqe;
768
769 size = (int_status & 0x7fff) << 2;
770
771 while (!size && retries < 10) {
772 wilc->hif_func->hif_read_size(wilc, &size);
773 size = (size & 0x7fff) << 2;
774 retries++;
775 }
776
777 if (size <= 0)
778 return;
779
780 if (WILC_RX_BUFF_SIZE - offset < size)
781 offset = 0;
782
783 buffer = &wilc->rx_buffer[offset];
784
785 wilc->hif_func->hif_clear_int_ext(wilc, DATA_INT_CLR | ENABLE_RX_VMM);
786 ret = wilc->hif_func->hif_block_rx_ext(wilc, 0, buffer, size);
787 if (!ret)
788 return;
789
790 offset += size;
791 wilc->rx_buffer_offset = offset;
792 rqe = kmalloc(sizeof(*rqe), GFP_KERNEL);
793 if (!rqe)
794 return;
795
796 rqe->buffer = buffer;
797 rqe->buffer_size = size;
798 wilc_wlan_rxq_add(wilc, rqe);
799 wilc_wlan_handle_rxq(wilc);
800 }
801
802 void wilc_handle_isr(struct wilc *wilc)
803 {
804 u32 int_status;
805
806 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
807 wilc->hif_func->hif_read_int(wilc, &int_status);
808
809 if (int_status & DATA_INT_EXT)
810 wilc_wlan_handle_isr_ext(wilc, int_status);
811
812 if (!(int_status & (ALL_INT_EXT)))
813 wilc_unknown_isr_ext(wilc);
814
815 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
816 }
817 EXPORT_SYMBOL_GPL(wilc_handle_isr);
818
819 int wilc_wlan_firmware_download(struct wilc *wilc, const u8 *buffer,
820 u32 buffer_size)
821 {
822 u32 offset;
823 u32 addr, size, size2, blksz;
824 u8 *dma_buffer;
825 int ret = 0;
826
827 blksz = BIT(12);
828
829 dma_buffer = kmalloc(blksz, GFP_KERNEL);
830 if (!dma_buffer)
831 return -EIO;
832
833 offset = 0;
834 do {
835 addr = get_unaligned_le32(&buffer[offset]);
836 size = get_unaligned_le32(&buffer[offset + 4]);
837 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
838 offset += 8;
839 while (((int)size) && (offset < buffer_size)) {
840 if (size <= blksz)
841 size2 = size;
842 else
843 size2 = blksz;
844
845 memcpy(dma_buffer, &buffer[offset], size2);
846 ret = wilc->hif_func->hif_block_tx(wilc, addr,
847 dma_buffer, size2);
848 if (!ret)
849 break;
850
851 addr += size2;
852 offset += size2;
853 size -= size2;
854 }
855 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
856
857 if (!ret) {
858 ret = -EIO;
859 goto fail;
860 }
861 } while (offset < buffer_size);
862
863 fail:
864
865 kfree(dma_buffer);
866
867 return (ret < 0) ? ret : 0;
868 }
869
870 int wilc_wlan_start(struct wilc *wilc)
871 {
872 u32 reg = 0;
873 int ret;
874 u32 chipid;
875
876 if (wilc->io_type == WILC_HIF_SDIO) {
877 reg = 0;
878 reg |= BIT(3);
879 } else if (wilc->io_type == WILC_HIF_SPI) {
880 reg = 1;
881 }
882 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
883 ret = wilc->hif_func->hif_write_reg(wilc, WILC_VMM_CORE_CFG, reg);
884 if (!ret) {
885 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
886 return -EIO;
887 }
888 reg = 0;
889 if (wilc->io_type == WILC_HIF_SDIO && wilc->dev_irq_num)
890 reg |= WILC_HAVE_SDIO_IRQ_GPIO;
891
892 #ifdef WILC_DISABLE_PMU
893 #else
894 reg |= WILC_HAVE_USE_PMU;
895 #endif
896
897 #ifdef WILC_SLEEP_CLK_SRC_XO
898 reg |= WILC_HAVE_SLEEP_CLK_SRC_XO;
899 #elif defined WILC_SLEEP_CLK_SRC_RTC
900 reg |= WILC_HAVE_SLEEP_CLK_SRC_RTC;
901 #endif
902
903 #ifdef WILC_EXT_PA_INV_TX_RX
904 reg |= WILC_HAVE_EXT_PA_INV_TX_RX;
905 #endif
906 reg |= WILC_HAVE_USE_IRQ_AS_HOST_WAKE;
907 reg |= WILC_HAVE_LEGACY_RF_SETTINGS;
908 #ifdef XTAL_24
909 reg |= WILC_HAVE_XTAL_24;
910 #endif
911 #ifdef DISABLE_WILC_UART
912 reg |= WILC_HAVE_DISABLE_WILC_UART;
913 #endif
914
915 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_1, reg);
916 if (!ret) {
917 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
918 return -EIO;
919 }
920
921 wilc->hif_func->hif_sync_ext(wilc, NUM_INT_EXT);
922
923 ret = wilc->hif_func->hif_read_reg(wilc, 0x1000, &chipid);
924 if (!ret) {
925 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
926 return -EIO;
927 }
928
929 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®);
930 if ((reg & BIT(10)) == BIT(10)) {
931 reg &= ~BIT(10);
932 wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
933 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®);
934 }
935
936 reg |= BIT(10);
937 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
938 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®);
939 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
940
941 return (ret < 0) ? ret : 0;
942 }
943
944 int wilc_wlan_stop(struct wilc *wilc, struct wilc_vif *vif)
945 {
946 u32 reg = 0;
947 int ret;
948
949 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
950
951 ret = wilc->hif_func->hif_read_reg(wilc, WILC_GP_REG_0, ®);
952 if (!ret) {
953 netdev_err(vif->ndev, "Error while reading reg\n");
954 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
955 return -EIO;
956 }
957
958 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_0,
959 (reg | WILC_ABORT_REQ_BIT));
960 if (!ret) {
961 netdev_err(vif->ndev, "Error while writing reg\n");
962 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
963 return -EIO;
964 }
965
966 ret = wilc->hif_func->hif_read_reg(wilc, WILC_FW_HOST_COMM, ®);
967 if (!ret) {
968 netdev_err(vif->ndev, "Error while reading reg\n");
969 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
970 return -EIO;
971 }
972 reg = BIT(0);
973
974 ret = wilc->hif_func->hif_write_reg(wilc, WILC_FW_HOST_COMM, reg);
975 if (!ret) {
976 netdev_err(vif->ndev, "Error while writing reg\n");
977 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
978 return -EIO;
979 }
980
981 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
982
983 return 0;
984 }
985
986 void wilc_wlan_cleanup(struct net_device *dev)
987 {
988 struct txq_entry_t *tqe;
989 struct rxq_entry_t *rqe;
990 struct wilc_vif *vif = netdev_priv(dev);
991 struct wilc *wilc = vif->wilc;
992
993 wilc->quit = 1;
994 do {
995 tqe = wilc_wlan_txq_remove_from_head(dev);
996 if (!tqe)
997 break;
998 if (tqe->tx_complete_func)
999 tqe->tx_complete_func(tqe->priv, 0);
1000 kfree(tqe);
1001 } while (1);
1002
1003 do {
1004 rqe = wilc_wlan_rxq_remove(wilc);
1005 if (!rqe)
1006 break;
1007 kfree(rqe);
1008 } while (1);
1009
1010 kfree(wilc->rx_buffer);
1011 wilc->rx_buffer = NULL;
1012 kfree(wilc->tx_buffer);
1013 wilc->tx_buffer = NULL;
1014 wilc->hif_func->hif_deinit(NULL);
1015 }
1016
1017 static int wilc_wlan_cfg_commit(struct wilc_vif *vif, int type,
1018 u32 drv_handler)
1019 {
1020 struct wilc *wilc = vif->wilc;
1021 struct wilc_cfg_frame *cfg = &wilc->cfg_frame;
1022 int t_len = wilc->cfg_frame_offset + sizeof(struct wilc_cfg_cmd_hdr);
1023
1024 if (type == WILC_CFG_SET)
1025 cfg->hdr.cmd_type = 'W';
1026 else
1027 cfg->hdr.cmd_type = 'Q';
1028
1029 cfg->hdr.seq_no = wilc->cfg_seq_no % 256;
1030 cfg->hdr.total_len = cpu_to_le16(t_len);
1031 cfg->hdr.driver_handler = cpu_to_le32(drv_handler);
1032 wilc->cfg_seq_no = cfg->hdr.seq_no;
1033
1034 if (!wilc_wlan_txq_add_cfg_pkt(vif, (u8 *)&cfg->hdr, t_len))
1035 return -1;
1036
1037 return 0;
1038 }
1039
1040 int wilc_wlan_cfg_set(struct wilc_vif *vif, int start, u16 wid, u8 *buffer,
1041 u32 buffer_size, int commit, u32 drv_handler)
1042 {
1043 u32 offset;
1044 int ret_size;
1045 struct wilc *wilc = vif->wilc;
1046
1047 mutex_lock(&wilc->cfg_cmd_lock);
1048
1049 if (start)
1050 wilc->cfg_frame_offset = 0;
1051
1052 offset = wilc->cfg_frame_offset;
1053 ret_size = wilc_wlan_cfg_set_wid(wilc->cfg_frame.frame, offset,
1054 wid, buffer, buffer_size);
1055 offset += ret_size;
1056 wilc->cfg_frame_offset = offset;
1057
1058 if (!commit) {
1059 mutex_unlock(&wilc->cfg_cmd_lock);
1060 return ret_size;
1061 }
1062
1063 netdev_dbg(vif->ndev, "%s: seqno[%d]\n", __func__, wilc->cfg_seq_no);
1064
1065 if (wilc_wlan_cfg_commit(vif, WILC_CFG_SET, drv_handler))
1066 ret_size = 0;
1067
1068 if (!wait_for_completion_timeout(&wilc->cfg_event,
1069 WILC_CFG_PKTS_TIMEOUT)) {
1070 netdev_dbg(vif->ndev, "%s: Timed Out\n", __func__);
1071 ret_size = 0;
1072 }
1073
1074 wilc->cfg_frame_offset = 0;
1075 wilc->cfg_seq_no += 1;
1076 mutex_unlock(&wilc->cfg_cmd_lock);
1077
1078 return ret_size;
1079 }
1080
1081 int wilc_wlan_cfg_get(struct wilc_vif *vif, int start, u16 wid, int commit,
1082 u32 drv_handler)
1083 {
1084 u32 offset;
1085 int ret_size;
1086 struct wilc *wilc = vif->wilc;
1087
1088 mutex_lock(&wilc->cfg_cmd_lock);
1089
1090 if (start)
1091 wilc->cfg_frame_offset = 0;
1092
1093 offset = wilc->cfg_frame_offset;
1094 ret_size = wilc_wlan_cfg_get_wid(wilc->cfg_frame.frame, offset, wid);
1095 offset += ret_size;
1096 wilc->cfg_frame_offset = offset;
1097
1098 if (!commit) {
1099 mutex_unlock(&wilc->cfg_cmd_lock);
1100 return ret_size;
1101 }
1102
1103 if (wilc_wlan_cfg_commit(vif, WILC_CFG_QUERY, drv_handler))
1104 ret_size = 0;
1105
1106 if (!wait_for_completion_timeout(&wilc->cfg_event,
1107 WILC_CFG_PKTS_TIMEOUT)) {
1108 netdev_dbg(vif->ndev, "%s: Timed Out\n", __func__);
1109 ret_size = 0;
1110 }
1111 wilc->cfg_frame_offset = 0;
1112 wilc->cfg_seq_no += 1;
1113 mutex_unlock(&wilc->cfg_cmd_lock);
1114
1115 return ret_size;
1116 }
1117
1118 int wilc_send_config_pkt(struct wilc_vif *vif, u8 mode, struct wid *wids,
1119 u32 count)
1120 {
1121 int i;
1122 int ret = 0;
1123 u32 drv = wilc_get_vif_idx(vif);
1124
1125 if (mode == WILC_GET_CFG) {
1126 for (i = 0; i < count; i++) {
1127 if (!wilc_wlan_cfg_get(vif, !i,
1128 wids[i].id,
1129 (i == count - 1),
1130 drv)) {
1131 ret = -ETIMEDOUT;
1132 break;
1133 }
1134 }
1135 for (i = 0; i < count; i++) {
1136 wids[i].size = wilc_wlan_cfg_get_val(vif->wilc,
1137 wids[i].id,
1138 wids[i].val,
1139 wids[i].size);
1140 }
1141 } else if (mode == WILC_SET_CFG) {
1142 for (i = 0; i < count; i++) {
1143 if (!wilc_wlan_cfg_set(vif, !i,
1144 wids[i].id,
1145 wids[i].val,
1146 wids[i].size,
1147 (i == count - 1),
1148 drv)) {
1149 ret = -ETIMEDOUT;
1150 break;
1151 }
1152 }
1153 }
1154
1155 return ret;
1156 }
1157
1158 static u32 init_chip(struct net_device *dev)
1159 {
1160 u32 chipid;
1161 u32 reg, ret = 0;
1162 struct wilc_vif *vif = netdev_priv(dev);
1163 struct wilc *wilc = vif->wilc;
1164
1165 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
1166
1167 chipid = wilc_get_chipid(wilc, true);
1168
1169 if ((chipid & 0xfff) != 0xa0) {
1170 ret = wilc->hif_func->hif_read_reg(wilc, 0x1118, ®);
1171 if (!ret) {
1172 netdev_err(dev, "fail read reg 0x1118\n");
1173 goto release;
1174 }
1175 reg |= BIT(0);
1176 ret = wilc->hif_func->hif_write_reg(wilc, 0x1118, reg);
1177 if (!ret) {
1178 netdev_err(dev, "fail write reg 0x1118\n");
1179 goto release;
1180 }
1181 ret = wilc->hif_func->hif_write_reg(wilc, 0xc0000, 0x71);
1182 if (!ret) {
1183 netdev_err(dev, "fail write reg 0xc0000\n");
1184 goto release;
1185 }
1186 }
1187
1188 release:
1189 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
1190
1191 return ret;
1192 }
1193
1194 u32 wilc_get_chipid(struct wilc *wilc, bool update)
1195 {
1196 static u32 chipid;
1197 u32 tempchipid = 0;
1198 u32 rfrevid = 0;
1199
1200 if (chipid == 0 || update) {
1201 wilc->hif_func->hif_read_reg(wilc, 0x1000, &tempchipid);
1202 wilc->hif_func->hif_read_reg(wilc, 0x13f4, &rfrevid);
1203 if (!is_wilc1000(tempchipid)) {
1204 chipid = 0;
1205 return chipid;
1206 }
1207 if (tempchipid == 0x1002a0) {
1208 if (rfrevid != 0x1)
1209 tempchipid = 0x1002a1;
1210 } else if (tempchipid == 0x1002b0) {
1211 if (rfrevid == 0x4)
1212 tempchipid = 0x1002b1;
1213 else if (rfrevid != 0x3)
1214 tempchipid = 0x1002b2;
1215 }
1216
1217 chipid = tempchipid;
1218 }
1219 return chipid;
1220 }
1221
1222 int wilc_wlan_init(struct net_device *dev)
1223 {
1224 int ret = 0;
1225 struct wilc_vif *vif = netdev_priv(dev);
1226 struct wilc *wilc;
1227
1228 wilc = vif->wilc;
1229
1230 wilc->quit = 0;
1231
1232 if (!wilc->hif_func->hif_init(wilc, false)) {
1233 ret = -EIO;
1234 goto fail;
1235 }
1236
1237 if (!wilc->tx_buffer)
1238 wilc->tx_buffer = kmalloc(WILC_TX_BUFF_SIZE, GFP_KERNEL);
1239
1240 if (!wilc->tx_buffer) {
1241 ret = -ENOBUFS;
1242 goto fail;
1243 }
1244
1245 if (!wilc->rx_buffer)
1246 wilc->rx_buffer = kmalloc(WILC_RX_BUFF_SIZE, GFP_KERNEL);
1247
1248 if (!wilc->rx_buffer) {
1249 ret = -ENOBUFS;
1250 goto fail;
1251 }
1252
1253 if (!init_chip(dev)) {
1254 ret = -EIO;
1255 goto fail;
1256 }
1257
1258 return 1;
1259
1260 fail:
1261
1262 kfree(wilc->rx_buffer);
1263 wilc->rx_buffer = NULL;
1264 kfree(wilc->tx_buffer);
1265 wilc->tx_buffer = NULL;
1266
1267 return ret;
1268 }