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7#include <linux/if_ether.h>
8#include <linux/ip.h>
9#include "wilc_wfi_netdevice.h"
10#include "wilc_wlan_cfg.h"
11
12static inline bool is_wilc1000(u32 id)
13{
14 return (id & 0xfffff000) == 0x100000;
15}
16
17static 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
24static 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
31static 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
37static struct txq_entry_t *
38wilc_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
57static 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
74static 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
94static 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
108static 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
117static 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
133static 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
181out:
182 spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
183}
184
185static 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
242void wilc_enable_tcp_ack_filter(struct wilc_vif *vif, bool value)
243{
244 vif->ack_filter.enabled = value;
245}
246
247static 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
271 wilc_wlan_txq_add_to_head(vif, tqe);
272
273 return 1;
274}
275
276int wilc_wlan_txq_add_net_pkt(struct net_device *dev, void *priv, u8 *buffer,
277 u32 buffer_size,
278 void (*tx_complete_fn)(void *, int))
279{
280 struct txq_entry_t *tqe;
281 struct wilc_vif *vif = netdev_priv(dev);
282 struct wilc *wilc;
283
284 wilc = vif->wilc;
285
286 if (wilc->quit)
287 return 0;
288
289 tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
290
291 if (!tqe)
292 return 0;
293 tqe->type = WILC_NET_PKT;
294 tqe->buffer = buffer;
295 tqe->buffer_size = buffer_size;
296 tqe->tx_complete_func = tx_complete_fn;
297 tqe->priv = priv;
298
299 tqe->ack_idx = NOT_TCP_ACK;
300 if (vif->ack_filter.enabled)
301 tcp_process(dev, tqe);
302 wilc_wlan_txq_add_to_tail(dev, tqe);
303 return wilc->txq_entries;
304}
305
306int wilc_wlan_txq_add_mgmt_pkt(struct net_device *dev, void *priv, u8 *buffer,
307 u32 buffer_size,
308 void (*tx_complete_fn)(void *, int))
309{
310 struct txq_entry_t *tqe;
311 struct wilc_vif *vif = netdev_priv(dev);
312 struct wilc *wilc;
313
314 wilc = vif->wilc;
315
316 if (wilc->quit)
317 return 0;
318
319 tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
320
321 if (!tqe)
322 return 0;
323 tqe->type = WILC_MGMT_PKT;
324 tqe->buffer = buffer;
325 tqe->buffer_size = buffer_size;
326 tqe->tx_complete_func = tx_complete_fn;
327 tqe->priv = priv;
328 tqe->ack_idx = NOT_TCP_ACK;
329 wilc_wlan_txq_add_to_tail(dev, tqe);
330 return 1;
331}
332
333static struct txq_entry_t *wilc_wlan_txq_get_first(struct wilc *wilc)
334{
335 struct txq_entry_t *tqe = NULL;
336 unsigned long flags;
337
338 spin_lock_irqsave(&wilc->txq_spinlock, flags);
339
340 if (!list_empty(&wilc->txq_head.list))
341 tqe = list_first_entry(&wilc->txq_head.list, struct txq_entry_t,
342 list);
343
344 spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
345
346 return tqe;
347}
348
349static struct txq_entry_t *wilc_wlan_txq_get_next(struct wilc *wilc,
350 struct txq_entry_t *tqe)
351{
352 unsigned long flags;
353
354 spin_lock_irqsave(&wilc->txq_spinlock, flags);
355
356 if (!list_is_last(&tqe->list, &wilc->txq_head.list))
357 tqe = list_next_entry(tqe, list);
358 else
359 tqe = NULL;
360 spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
361
362 return tqe;
363}
364
365static void wilc_wlan_rxq_add(struct wilc *wilc, struct rxq_entry_t *rqe)
366{
367 if (wilc->quit)
368 return;
369
370 mutex_lock(&wilc->rxq_cs);
371 list_add_tail(&rqe->list, &wilc->rxq_head.list);
372 mutex_unlock(&wilc->rxq_cs);
373}
374
375static struct rxq_entry_t *wilc_wlan_rxq_remove(struct wilc *wilc)
376{
377 struct rxq_entry_t *rqe = NULL;
378
379 mutex_lock(&wilc->rxq_cs);
380 if (!list_empty(&wilc->rxq_head.list)) {
381 rqe = list_first_entry(&wilc->rxq_head.list, struct rxq_entry_t,
382 list);
383 list_del(&rqe->list);
384 }
385 mutex_unlock(&wilc->rxq_cs);
386 return rqe;
387}
388
389void chip_allow_sleep(struct wilc *wilc)
390{
391 u32 reg = 0;
392
393 wilc->hif_func->hif_read_reg(wilc, 0xf0, ®);
394
395 wilc->hif_func->hif_write_reg(wilc, 0xf0, reg & ~BIT(0));
396 wilc->hif_func->hif_write_reg(wilc, 0xfa, 0);
397}
398EXPORT_SYMBOL_GPL(chip_allow_sleep);
399
400void chip_wakeup(struct wilc *wilc)
401{
402 u32 reg, clk_status_reg;
403
404 if ((wilc->io_type & 0x1) == WILC_HIF_SPI) {
405 do {
406 wilc->hif_func->hif_read_reg(wilc, 1, ®);
407 wilc->hif_func->hif_write_reg(wilc, 1, reg | BIT(1));
408 wilc->hif_func->hif_write_reg(wilc, 1, reg & ~BIT(1));
409
410 do {
411 usleep_range(2000, 2500);
412 wilc_get_chipid(wilc, true);
413 } while (wilc_get_chipid(wilc, true) == 0);
414 } while (wilc_get_chipid(wilc, true) == 0);
415 } else if ((wilc->io_type & 0x1) == WILC_HIF_SDIO) {
416 wilc->hif_func->hif_write_reg(wilc, 0xfa, 1);
417 usleep_range(200, 400);
418 wilc->hif_func->hif_read_reg(wilc, 0xf0, ®);
419 do {
420 wilc->hif_func->hif_write_reg(wilc, 0xf0,
421 reg | BIT(0));
422 wilc->hif_func->hif_read_reg(wilc, 0xf1,
423 &clk_status_reg);
424
425 while ((clk_status_reg & 0x1) == 0) {
426 usleep_range(2000, 2500);
427
428 wilc->hif_func->hif_read_reg(wilc, 0xf1,
429 &clk_status_reg);
430 }
431 if ((clk_status_reg & 0x1) == 0) {
432 wilc->hif_func->hif_write_reg(wilc, 0xf0,
433 reg & (~BIT(0)));
434 }
435 } while ((clk_status_reg & 0x1) == 0);
436 }
437
438 if (wilc->chip_ps_state == WILC_CHIP_SLEEPING_MANUAL) {
439 if (wilc_get_chipid(wilc, false) < 0x1002b0) {
440 u32 val32;
441
442 wilc->hif_func->hif_read_reg(wilc, 0x1e1c, &val32);
443 val32 |= BIT(6);
444 wilc->hif_func->hif_write_reg(wilc, 0x1e1c, val32);
445
446 wilc->hif_func->hif_read_reg(wilc, 0x1e9c, &val32);
447 val32 |= BIT(6);
448 wilc->hif_func->hif_write_reg(wilc, 0x1e9c, val32);
449 }
450 }
451 wilc->chip_ps_state = WILC_CHIP_WAKEDUP;
452}
453EXPORT_SYMBOL_GPL(chip_wakeup);
454
455void wilc_chip_sleep_manually(struct wilc *wilc)
456{
457 if (wilc->chip_ps_state != WILC_CHIP_WAKEDUP)
458 return;
459 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
460
461 chip_allow_sleep(wilc);
462 wilc->hif_func->hif_write_reg(wilc, 0x10a8, 1);
463
464 wilc->chip_ps_state = WILC_CHIP_SLEEPING_MANUAL;
465 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
466}
467EXPORT_SYMBOL_GPL(wilc_chip_sleep_manually);
468
469void host_wakeup_notify(struct wilc *wilc)
470{
471 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
472 wilc->hif_func->hif_write_reg(wilc, 0x10b0, 1);
473 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
474}
475EXPORT_SYMBOL_GPL(host_wakeup_notify);
476
477void host_sleep_notify(struct wilc *wilc)
478{
479 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
480 wilc->hif_func->hif_write_reg(wilc, 0x10ac, 1);
481 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
482}
483EXPORT_SYMBOL_GPL(host_sleep_notify);
484
485int wilc_wlan_handle_txq(struct net_device *dev, u32 *txq_count)
486{
487 int i, entries = 0;
488 u32 sum;
489 u32 reg;
490 u32 offset = 0;
491 int vmm_sz = 0;
492 struct txq_entry_t *tqe;
493 int ret = 0;
494 int counter;
495 int timeout;
496 u32 vmm_table[WILC_VMM_TBL_SIZE];
497 struct wilc_vif *vif = netdev_priv(dev);
498 struct wilc *wilc = vif->wilc;
499 const struct wilc_hif_func *func;
500 u8 *txb = wilc->tx_buffer;
501
502 if (wilc->quit)
503 goto out;
504
505 mutex_lock(&wilc->txq_add_to_head_cs);
506 wilc_wlan_txq_filter_dup_tcp_ack(dev);
507 tqe = wilc_wlan_txq_get_first(wilc);
508 i = 0;
509 sum = 0;
510 do {
511 if (tqe && (i < (WILC_VMM_TBL_SIZE - 1))) {
512 if (tqe->type == WILC_CFG_PKT)
513 vmm_sz = ETH_CONFIG_PKT_HDR_OFFSET;
514
515 else if (tqe->type == WILC_NET_PKT)
516 vmm_sz = ETH_ETHERNET_HDR_OFFSET;
517
518 else
519 vmm_sz = HOST_HDR_OFFSET;
520
521 vmm_sz += tqe->buffer_size;
522
523 if (vmm_sz & 0x3)
524 vmm_sz = (vmm_sz + 4) & ~0x3;
525
526 if ((sum + vmm_sz) > WILC_TX_BUFF_SIZE)
527 break;
528
529 vmm_table[i] = vmm_sz / 4;
530 if (tqe->type == WILC_CFG_PKT)
531 vmm_table[i] |= BIT(10);
532 cpu_to_le32s(&vmm_table[i]);
533
534 i++;
535 sum += vmm_sz;
536 tqe = wilc_wlan_txq_get_next(wilc, tqe);
537 } else {
538 break;
539 }
540 } while (1);
541
542 if (i == 0)
543 goto out;
544 vmm_table[i] = 0x0;
545
546 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
547 counter = 0;
548 func = wilc->hif_func;
549 do {
550 ret = func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, ®);
551 if (!ret)
552 break;
553
554 if ((reg & 0x1) == 0)
555 break;
556
557 counter++;
558 if (counter > 200) {
559 counter = 0;
560 ret = func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, 0);
561 break;
562 }
563 } while (!wilc->quit);
564
565 if (!ret)
566 goto out_release_bus;
567
568 timeout = 200;
569 do {
570 ret = func->hif_block_tx(wilc,
571 WILC_VMM_TBL_RX_SHADOW_BASE,
572 (u8 *)vmm_table,
573 ((i + 1) * 4));
574 if (!ret)
575 break;
576
577 ret = func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x2);
578 if (!ret)
579 break;
580
581 do {
582 ret = func->hif_read_reg(wilc, WILC_HOST_VMM_CTL, ®);
583 if (!ret)
584 break;
585 if ((reg >> 2) & 0x1) {
586 entries = ((reg >> 3) & 0x3f);
587 break;
588 }
589 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
590 } while (--timeout);
591 if (timeout <= 0) {
592 ret = func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x0);
593 break;
594 }
595
596 if (!ret)
597 break;
598
599 if (entries == 0) {
600 ret = func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, ®);
601 if (!ret)
602 break;
603 reg &= ~BIT(0);
604 ret = func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, reg);
605 if (!ret)
606 break;
607 break;
608 }
609 break;
610 } while (1);
611
612 if (!ret)
613 goto out_release_bus;
614
615 if (entries == 0) {
616 ret = -ENOBUFS;
617 goto out_release_bus;
618 }
619
620 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
621
622 offset = 0;
623 i = 0;
624 do {
625 u32 header, buffer_offset;
626 char *bssid;
627
628 tqe = wilc_wlan_txq_remove_from_head(dev);
629 if (!tqe)
630 break;
631
632 if (vmm_table[i] == 0)
633 break;
634
635 le32_to_cpus(&vmm_table[i]);
636 vmm_sz = (vmm_table[i] & 0x3ff);
637 vmm_sz *= 4;
638 header = (tqe->type << 31) |
639 (tqe->buffer_size << 15) |
640 vmm_sz;
641 if (tqe->type == WILC_MGMT_PKT)
642 header |= BIT(30);
643 else
644 header &= ~BIT(30);
645
646 cpu_to_le32s(&header);
647 memcpy(&txb[offset], &header, 4);
648 if (tqe->type == WILC_CFG_PKT) {
649 buffer_offset = ETH_CONFIG_PKT_HDR_OFFSET;
650 } else if (tqe->type == WILC_NET_PKT) {
651 bssid = ((struct tx_complete_data *)(tqe->priv))->bssid;
652
653 buffer_offset = ETH_ETHERNET_HDR_OFFSET;
654 memcpy(&txb[offset + 8], bssid, 6);
655 } else {
656 buffer_offset = HOST_HDR_OFFSET;
657 }
658
659 memcpy(&txb[offset + buffer_offset],
660 tqe->buffer, tqe->buffer_size);
661 offset += vmm_sz;
662 i++;
663 tqe->status = 1;
664 if (tqe->tx_complete_func)
665 tqe->tx_complete_func(tqe->priv, tqe->status);
666 if (tqe->ack_idx != NOT_TCP_ACK &&
667 tqe->ack_idx < MAX_PENDING_ACKS)
668 vif->ack_filter.pending_acks[tqe->ack_idx].txqe = NULL;
669 kfree(tqe);
670 } while (--entries);
671
672 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
673
674 ret = func->hif_clear_int_ext(wilc, ENABLE_TX_VMM);
675 if (!ret)
676 goto out_release_bus;
677
678 ret = func->hif_block_tx_ext(wilc, 0, txb, offset);
679
680out_release_bus:
681 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
682
683out:
684 mutex_unlock(&wilc->txq_add_to_head_cs);
685
686 *txq_count = wilc->txq_entries;
687 return ret;
688}
689
690static void wilc_wlan_handle_rx_buff(struct wilc *wilc, u8 *buffer, int size)
691{
692 int offset = 0;
693 u32 header;
694 u32 pkt_len, pkt_offset, tp_len;
695 int is_cfg_packet;
696 u8 *buff_ptr;
697
698 do {
699 buff_ptr = buffer + offset;
700 memcpy(&header, buff_ptr, 4);
701 le32_to_cpus(&header);
702
703 is_cfg_packet = (header >> 31) & 0x1;
704 pkt_offset = (header >> 22) & 0x1ff;
705 tp_len = (header >> 11) & 0x7ff;
706 pkt_len = header & 0x7ff;
707
708 if (pkt_len == 0 || tp_len == 0)
709 break;
710
711 if (pkt_offset & IS_MANAGMEMENT) {
712 pkt_offset &= ~(IS_MANAGMEMENT |
713 IS_MANAGMEMENT_CALLBACK |
714 IS_MGMT_STATUS_SUCCES);
715 buff_ptr += HOST_HDR_OFFSET;
716 wilc_wfi_mgmt_rx(wilc, buff_ptr, pkt_len);
717 } else {
718 if (!is_cfg_packet) {
719 if (pkt_len > 0) {
720 wilc_frmw_to_host(wilc, buff_ptr,
721 pkt_len, pkt_offset);
722 }
723 } else {
724 struct wilc_cfg_rsp rsp;
725
726 buff_ptr += pkt_offset;
727
728 wilc_wlan_cfg_indicate_rx(wilc, buff_ptr,
729 pkt_len,
730 &rsp);
731 if (rsp.type == WILC_CFG_RSP) {
732 if (wilc->cfg_seq_no == rsp.seq_no)
733 complete(&wilc->cfg_event);
734 } else if (rsp.type == WILC_CFG_RSP_STATUS) {
735 wilc_mac_indicate(wilc);
736 }
737 }
738 }
739 offset += tp_len;
740 if (offset >= size)
741 break;
742 } while (1);
743}
744
745static void wilc_wlan_handle_rxq(struct wilc *wilc)
746{
747 int size;
748 u8 *buffer;
749 struct rxq_entry_t *rqe;
750
751 do {
752 if (wilc->quit) {
753 complete(&wilc->cfg_event);
754 break;
755 }
756 rqe = wilc_wlan_rxq_remove(wilc);
757 if (!rqe)
758 break;
759
760 buffer = rqe->buffer;
761 size = rqe->buffer_size;
762 wilc_wlan_handle_rx_buff(wilc, buffer, size);
763
764 kfree(rqe);
765 } while (1);
766}
767
768static void wilc_unknown_isr_ext(struct wilc *wilc)
769{
770 wilc->hif_func->hif_clear_int_ext(wilc, 0);
771}
772
773static void wilc_pllupdate_isr_ext(struct wilc *wilc, u32 int_stats)
774{
775 int trials = 10;
776
777 wilc->hif_func->hif_clear_int_ext(wilc, PLL_INT_CLR);
778
779 if (wilc->io_type == WILC_HIF_SDIO)
780 mdelay(WILC_PLL_TO_SDIO);
781 else
782 mdelay(WILC_PLL_TO_SPI);
783
784 while (!(is_wilc1000(wilc_get_chipid(wilc, true)) && --trials))
785 mdelay(1);
786}
787
788static void wilc_sleeptimer_isr_ext(struct wilc *wilc, u32 int_stats1)
789{
790 wilc->hif_func->hif_clear_int_ext(wilc, SLEEP_INT_CLR);
791}
792
793static void wilc_wlan_handle_isr_ext(struct wilc *wilc, u32 int_status)
794{
795 u32 offset = wilc->rx_buffer_offset;
796 u8 *buffer = NULL;
797 u32 size;
798 u32 retries = 0;
799 int ret = 0;
800 struct rxq_entry_t *rqe;
801
802 size = (int_status & 0x7fff) << 2;
803
804 while (!size && retries < 10) {
805 wilc->hif_func->hif_read_size(wilc, &size);
806 size = (size & 0x7fff) << 2;
807 retries++;
808 }
809
810 if (size <= 0)
811 return;
812
813 if (WILC_RX_BUFF_SIZE - offset < size)
814 offset = 0;
815
816 buffer = &wilc->rx_buffer[offset];
817
818 wilc->hif_func->hif_clear_int_ext(wilc, DATA_INT_CLR | ENABLE_RX_VMM);
819 ret = wilc->hif_func->hif_block_rx_ext(wilc, 0, buffer, size);
820 if (!ret)
821 return;
822
823 offset += size;
824 wilc->rx_buffer_offset = offset;
825 rqe = kmalloc(sizeof(*rqe), GFP_KERNEL);
826 if (!rqe)
827 return;
828
829 rqe->buffer = buffer;
830 rqe->buffer_size = size;
831 wilc_wlan_rxq_add(wilc, rqe);
832 wilc_wlan_handle_rxq(wilc);
833}
834
835void wilc_handle_isr(struct wilc *wilc)
836{
837 u32 int_status;
838
839 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
840 wilc->hif_func->hif_read_int(wilc, &int_status);
841
842 if (int_status & PLL_INT_EXT)
843 wilc_pllupdate_isr_ext(wilc, int_status);
844
845 if (int_status & DATA_INT_EXT)
846 wilc_wlan_handle_isr_ext(wilc, int_status);
847
848 if (int_status & SLEEP_INT_EXT)
849 wilc_sleeptimer_isr_ext(wilc, int_status);
850
851 if (!(int_status & (ALL_INT_EXT)))
852 wilc_unknown_isr_ext(wilc);
853
854 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
855}
856EXPORT_SYMBOL_GPL(wilc_handle_isr);
857
858int wilc_wlan_firmware_download(struct wilc *wilc, const u8 *buffer,
859 u32 buffer_size)
860{
861 u32 offset;
862 u32 addr, size, size2, blksz;
863 u8 *dma_buffer;
864 int ret = 0;
865
866 blksz = BIT(12);
867
868 dma_buffer = kmalloc(blksz, GFP_KERNEL);
869 if (!dma_buffer)
870 return -EIO;
871
872 offset = 0;
873 do {
874 memcpy(&addr, &buffer[offset], 4);
875 memcpy(&size, &buffer[offset + 4], 4);
876 le32_to_cpus(&addr);
877 le32_to_cpus(&size);
878 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
879 offset += 8;
880 while (((int)size) && (offset < buffer_size)) {
881 if (size <= blksz)
882 size2 = size;
883 else
884 size2 = blksz;
885
886 memcpy(dma_buffer, &buffer[offset], size2);
887 ret = wilc->hif_func->hif_block_tx(wilc, addr,
888 dma_buffer, size2);
889 if (!ret)
890 break;
891
892 addr += size2;
893 offset += size2;
894 size -= size2;
895 }
896 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
897
898 if (!ret) {
899 ret = -EIO;
900 goto fail;
901 }
902 } while (offset < buffer_size);
903
904fail:
905
906 kfree(dma_buffer);
907
908 return (ret < 0) ? ret : 0;
909}
910
911int wilc_wlan_start(struct wilc *wilc)
912{
913 u32 reg = 0;
914 int ret;
915 u32 chipid;
916
917 if (wilc->io_type == WILC_HIF_SDIO) {
918 reg = 0;
919 reg |= BIT(3);
920 } else if (wilc->io_type == WILC_HIF_SPI) {
921 reg = 1;
922 }
923 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
924 ret = wilc->hif_func->hif_write_reg(wilc, WILC_VMM_CORE_CFG, reg);
925 if (!ret) {
926 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
927 return -EIO;
928 }
929 reg = 0;
930 if (wilc->io_type == WILC_HIF_SDIO && wilc->dev_irq_num)
931 reg |= WILC_HAVE_SDIO_IRQ_GPIO;
932
933#ifdef WILC_DISABLE_PMU
934#else
935 reg |= WILC_HAVE_USE_PMU;
936#endif
937
938#ifdef WILC_SLEEP_CLK_SRC_XO
939 reg |= WILC_HAVE_SLEEP_CLK_SRC_XO;
940#elif defined WILC_SLEEP_CLK_SRC_RTC
941 reg |= WILC_HAVE_SLEEP_CLK_SRC_RTC;
942#endif
943
944#ifdef WILC_EXT_PA_INV_TX_RX
945 reg |= WILC_HAVE_EXT_PA_INV_TX_RX;
946#endif
947 reg |= WILC_HAVE_USE_IRQ_AS_HOST_WAKE;
948 reg |= WILC_HAVE_LEGACY_RF_SETTINGS;
949#ifdef XTAL_24
950 reg |= WILC_HAVE_XTAL_24;
951#endif
952#ifdef DISABLE_WILC_UART
953 reg |= WILC_HAVE_DISABLE_WILC_UART;
954#endif
955
956 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_1, reg);
957 if (!ret) {
958 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
959 return -EIO;
960 }
961
962 wilc->hif_func->hif_sync_ext(wilc, NUM_INT_EXT);
963
964 ret = wilc->hif_func->hif_read_reg(wilc, 0x1000, &chipid);
965 if (!ret) {
966 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
967 return -EIO;
968 }
969
970 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®);
971 if ((reg & BIT(10)) == BIT(10)) {
972 reg &= ~BIT(10);
973 wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
974 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®);
975 }
976
977 reg |= BIT(10);
978 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
979 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®);
980 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
981
982 return (ret < 0) ? ret : 0;
983}
984
985int wilc_wlan_stop(struct wilc *wilc)
986{
987 u32 reg = 0;
988 int ret;
989 u8 timeout = 10;
990
991 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
992
993 ret = wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®);
994 if (!ret) {
995 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
996 return ret;
997 }
998
999 reg &= ~BIT(10);
1000 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1001 if (!ret) {
1002 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
1003 return ret;
1004 }
1005
1006 do {
1007 ret = wilc->hif_func->hif_read_reg(wilc,
1008 WILC_GLB_RESET_0, ®);
1009 if (!ret) {
1010 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
1011 return ret;
1012 }
1013
1014 if ((reg & BIT(10))) {
1015 reg &= ~BIT(10);
1016 ret = wilc->hif_func->hif_write_reg(wilc,
1017 WILC_GLB_RESET_0,
1018 reg);
1019 timeout--;
1020 } else {
1021 ret = wilc->hif_func->hif_read_reg(wilc,
1022 WILC_GLB_RESET_0,
1023 ®);
1024 if (!ret) {
1025 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
1026 return ret;
1027 }
1028 break;
1029 }
1030
1031 } while (timeout);
1032 reg = (BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(8) | BIT(9) | BIT(26) |
1033 BIT(29) | BIT(30) | BIT(31));
1034
1035 wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1036 reg = (u32)~BIT(10);
1037
1038 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1039
1040 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
1041
1042 return ret;
1043}
1044
1045void wilc_wlan_cleanup(struct net_device *dev)
1046{
1047 struct txq_entry_t *tqe;
1048 struct rxq_entry_t *rqe;
1049 u32 reg = 0;
1050 int ret;
1051 struct wilc_vif *vif = netdev_priv(dev);
1052 struct wilc *wilc = vif->wilc;
1053
1054 wilc->quit = 1;
1055 do {
1056 tqe = wilc_wlan_txq_remove_from_head(dev);
1057 if (!tqe)
1058 break;
1059 if (tqe->tx_complete_func)
1060 tqe->tx_complete_func(tqe->priv, 0);
1061 kfree(tqe);
1062 } while (1);
1063
1064 do {
1065 rqe = wilc_wlan_rxq_remove(wilc);
1066 if (!rqe)
1067 break;
1068 kfree(rqe);
1069 } while (1);
1070
1071 kfree(wilc->rx_buffer);
1072 wilc->rx_buffer = NULL;
1073 kfree(wilc->tx_buffer);
1074 wilc->tx_buffer = NULL;
1075
1076 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
1077
1078 ret = wilc->hif_func->hif_read_reg(wilc, WILC_GP_REG_0, ®);
1079 if (!ret) {
1080 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
1081 return;
1082 }
1083
1084 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_0,
1085 (reg | ABORT_INT));
1086 if (!ret) {
1087 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
1088 return;
1089 }
1090
1091 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
1092 wilc->hif_func->hif_deinit(NULL);
1093}
1094
1095static int wilc_wlan_cfg_commit(struct wilc_vif *vif, int type,
1096 u32 drv_handler)
1097{
1098 struct wilc *wilc = vif->wilc;
1099 struct wilc_cfg_frame *cfg = &wilc->cfg_frame;
1100 int t_len = wilc->cfg_frame_offset + sizeof(struct wilc_cfg_cmd_hdr);
1101
1102 if (type == WILC_CFG_SET)
1103 cfg->hdr.cmd_type = 'W';
1104 else
1105 cfg->hdr.cmd_type = 'Q';
1106
1107 cfg->hdr.seq_no = wilc->cfg_seq_no % 256;
1108 cfg->hdr.total_len = cpu_to_le16(t_len);
1109 cfg->hdr.driver_handler = cpu_to_le32(drv_handler);
1110 wilc->cfg_seq_no = cfg->hdr.seq_no;
1111
1112 if (!wilc_wlan_txq_add_cfg_pkt(vif, (u8 *)&cfg->hdr, t_len))
1113 return -1;
1114
1115 return 0;
1116}
1117
1118int wilc_wlan_cfg_set(struct wilc_vif *vif, int start, u16 wid, u8 *buffer,
1119 u32 buffer_size, int commit, u32 drv_handler)
1120{
1121 u32 offset;
1122 int ret_size;
1123 struct wilc *wilc = vif->wilc;
1124
1125 mutex_lock(&wilc->cfg_cmd_lock);
1126
1127 if (start)
1128 wilc->cfg_frame_offset = 0;
1129
1130 offset = wilc->cfg_frame_offset;
1131 ret_size = wilc_wlan_cfg_set_wid(wilc->cfg_frame.frame, offset,
1132 wid, buffer, buffer_size);
1133 offset += ret_size;
1134 wilc->cfg_frame_offset = offset;
1135
1136 if (!commit) {
1137 mutex_unlock(&wilc->cfg_cmd_lock);
1138 return ret_size;
1139 }
1140
1141 netdev_dbg(vif->ndev, "%s: seqno[%d]\n", __func__, wilc->cfg_seq_no);
1142
1143 if (wilc_wlan_cfg_commit(vif, WILC_CFG_SET, drv_handler))
1144 ret_size = 0;
1145
1146 if (!wait_for_completion_timeout(&wilc->cfg_event,
1147 WILC_CFG_PKTS_TIMEOUT)) {
1148 netdev_dbg(vif->ndev, "%s: Timed Out\n", __func__);
1149 ret_size = 0;
1150 }
1151
1152 wilc->cfg_frame_offset = 0;
1153 wilc->cfg_seq_no += 1;
1154 mutex_unlock(&wilc->cfg_cmd_lock);
1155
1156 return ret_size;
1157}
1158
1159int wilc_wlan_cfg_get(struct wilc_vif *vif, int start, u16 wid, int commit,
1160 u32 drv_handler)
1161{
1162 u32 offset;
1163 int ret_size;
1164 struct wilc *wilc = vif->wilc;
1165
1166 mutex_lock(&wilc->cfg_cmd_lock);
1167
1168 if (start)
1169 wilc->cfg_frame_offset = 0;
1170
1171 offset = wilc->cfg_frame_offset;
1172 ret_size = wilc_wlan_cfg_get_wid(wilc->cfg_frame.frame, offset, wid);
1173 offset += ret_size;
1174 wilc->cfg_frame_offset = offset;
1175
1176 if (!commit) {
1177 mutex_unlock(&wilc->cfg_cmd_lock);
1178 return ret_size;
1179 }
1180
1181 if (wilc_wlan_cfg_commit(vif, WILC_CFG_QUERY, drv_handler))
1182 ret_size = 0;
1183
1184 if (!wait_for_completion_timeout(&wilc->cfg_event,
1185 WILC_CFG_PKTS_TIMEOUT)) {
1186 netdev_dbg(vif->ndev, "%s: Timed Out\n", __func__);
1187 ret_size = 0;
1188 }
1189 wilc->cfg_frame_offset = 0;
1190 wilc->cfg_seq_no += 1;
1191 mutex_unlock(&wilc->cfg_cmd_lock);
1192
1193 return ret_size;
1194}
1195
1196int wilc_wlan_cfg_get_val(struct wilc *wl, u16 wid, u8 *buffer, u32 buffer_size)
1197{
1198 return wilc_wlan_cfg_get_wid_value(wl, wid, buffer, buffer_size);
1199}
1200
1201int wilc_send_config_pkt(struct wilc_vif *vif, u8 mode, struct wid *wids,
1202 u32 count, u32 drv)
1203{
1204 int i;
1205 int ret = 0;
1206
1207 if (mode == WILC_GET_CFG) {
1208 for (i = 0; i < count; i++) {
1209 if (!wilc_wlan_cfg_get(vif, !i,
1210 wids[i].id,
1211 (i == count - 1),
1212 drv)) {
1213 ret = -ETIMEDOUT;
1214 break;
1215 }
1216 }
1217 for (i = 0; i < count; i++) {
1218 wids[i].size = wilc_wlan_cfg_get_val(vif->wilc,
1219 wids[i].id,
1220 wids[i].val,
1221 wids[i].size);
1222 }
1223 } else if (mode == WILC_SET_CFG) {
1224 for (i = 0; i < count; i++) {
1225 if (!wilc_wlan_cfg_set(vif, !i,
1226 wids[i].id,
1227 wids[i].val,
1228 wids[i].size,
1229 (i == count - 1),
1230 drv)) {
1231 ret = -ETIMEDOUT;
1232 break;
1233 }
1234 }
1235 }
1236
1237 return ret;
1238}
1239
1240static u32 init_chip(struct net_device *dev)
1241{
1242 u32 chipid;
1243 u32 reg, ret = 0;
1244 struct wilc_vif *vif = netdev_priv(dev);
1245 struct wilc *wilc = vif->wilc;
1246
1247 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
1248
1249 chipid = wilc_get_chipid(wilc, true);
1250
1251 if ((chipid & 0xfff) != 0xa0) {
1252 ret = wilc->hif_func->hif_read_reg(wilc, 0x1118, ®);
1253 if (!ret) {
1254 netdev_err(dev, "fail read reg 0x1118\n");
1255 goto release;
1256 }
1257 reg |= BIT(0);
1258 ret = wilc->hif_func->hif_write_reg(wilc, 0x1118, reg);
1259 if (!ret) {
1260 netdev_err(dev, "fail write reg 0x1118\n");
1261 goto release;
1262 }
1263 ret = wilc->hif_func->hif_write_reg(wilc, 0xc0000, 0x71);
1264 if (!ret) {
1265 netdev_err(dev, "fail write reg 0xc0000\n");
1266 goto release;
1267 }
1268 }
1269
1270release:
1271 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
1272
1273 return ret;
1274}
1275
1276u32 wilc_get_chipid(struct wilc *wilc, bool update)
1277{
1278 static u32 chipid;
1279 u32 tempchipid = 0;
1280 u32 rfrevid = 0;
1281
1282 if (chipid == 0 || update) {
1283 wilc->hif_func->hif_read_reg(wilc, 0x1000, &tempchipid);
1284 wilc->hif_func->hif_read_reg(wilc, 0x13f4, &rfrevid);
1285 if (!is_wilc1000(tempchipid)) {
1286 chipid = 0;
1287 return chipid;
1288 }
1289 if (tempchipid == 0x1002a0) {
1290 if (rfrevid != 0x1)
1291 tempchipid = 0x1002a1;
1292 } else if (tempchipid == 0x1002b0) {
1293 if (rfrevid == 0x4)
1294 tempchipid = 0x1002b1;
1295 else if (rfrevid != 0x3)
1296 tempchipid = 0x1002b2;
1297 }
1298
1299 chipid = tempchipid;
1300 }
1301 return chipid;
1302}
1303
1304int wilc_wlan_init(struct net_device *dev)
1305{
1306 int ret = 0;
1307 struct wilc_vif *vif = netdev_priv(dev);
1308 struct wilc *wilc;
1309
1310 wilc = vif->wilc;
1311
1312 wilc->quit = 0;
1313
1314 if (!wilc->hif_func->hif_init(wilc, false)) {
1315 ret = -EIO;
1316 goto fail;
1317 }
1318
1319 if (!wilc->tx_buffer)
1320 wilc->tx_buffer = kmalloc(WILC_TX_BUFF_SIZE, GFP_KERNEL);
1321
1322 if (!wilc->tx_buffer) {
1323 ret = -ENOBUFS;
1324 goto fail;
1325 }
1326
1327 if (!wilc->rx_buffer)
1328 wilc->rx_buffer = kmalloc(WILC_RX_BUFF_SIZE, GFP_KERNEL);
1329
1330 if (!wilc->rx_buffer) {
1331 ret = -ENOBUFS;
1332 goto fail;
1333 }
1334
1335 if (!init_chip(dev)) {
1336 ret = -EIO;
1337 goto fail;
1338 }
1339
1340 return 1;
1341
1342fail:
1343
1344 kfree(wilc->rx_buffer);
1345 wilc->rx_buffer = NULL;
1346 kfree(wilc->tx_buffer);
1347 wilc->tx_buffer = NULL;
1348
1349 return ret;
1350}
1351
