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7#include <linux/if_ether.h>
8#include <linux/ip.h>
9#include "wilc_wfi_cfgoperations.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 tqe->vif = vif;
271
272 wilc_wlan_txq_add_to_head(vif, tqe);
273
274 return 1;
275}
276
277int 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
308int 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
336static 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
352static 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
368static 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
378static 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
392void 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}
401EXPORT_SYMBOL_GPL(chip_allow_sleep);
402
403void 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}
456EXPORT_SYMBOL_GPL(chip_wakeup);
457
458void wilc_chip_sleep_manually(struct wilc *wilc)
459{
460 if (wilc->chip_ps_state != WILC_CHIP_WAKEDUP)
461 return;
462 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
463
464 chip_allow_sleep(wilc);
465 wilc->hif_func->hif_write_reg(wilc, 0x10a8, 1);
466
467 wilc->chip_ps_state = WILC_CHIP_SLEEPING_MANUAL;
468 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
469}
470EXPORT_SYMBOL_GPL(wilc_chip_sleep_manually);
471
472void host_wakeup_notify(struct wilc *wilc)
473{
474 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
475 wilc->hif_func->hif_write_reg(wilc, 0x10b0, 1);
476 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
477}
478EXPORT_SYMBOL_GPL(host_wakeup_notify);
479
480void host_sleep_notify(struct wilc *wilc)
481{
482 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
483 wilc->hif_func->hif_write_reg(wilc, 0x10ac, 1);
484 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
485}
486EXPORT_SYMBOL_GPL(host_sleep_notify);
487
488int wilc_wlan_handle_txq(struct wilc *wilc, u32 *txq_count)
489{
490 int i, entries = 0;
491 u32 sum;
492 u32 reg;
493 u32 offset = 0;
494 int vmm_sz = 0;
495 struct txq_entry_t *tqe;
496 int ret = 0;
497 int counter;
498 int timeout;
499 u32 vmm_table[WILC_VMM_TBL_SIZE];
500 const struct wilc_hif_func *func;
501 u8 *txb = wilc->tx_buffer;
502 struct net_device *dev;
503 struct wilc_vif *vif;
504
505 if (wilc->quit)
506 goto out;
507
508 mutex_lock(&wilc->txq_add_to_head_cs);
509 tqe = wilc_wlan_txq_get_first(wilc);
510 if (!tqe)
511 goto out;
512 dev = tqe->vif->ndev;
513 wilc_wlan_txq_filter_dup_tcp_ack(dev);
514 i = 0;
515 sum = 0;
516 do {
517 if (tqe && (i < (WILC_VMM_TBL_SIZE - 1))) {
518 if (tqe->type == WILC_CFG_PKT)
519 vmm_sz = ETH_CONFIG_PKT_HDR_OFFSET;
520
521 else if (tqe->type == WILC_NET_PKT)
522 vmm_sz = ETH_ETHERNET_HDR_OFFSET;
523
524 else
525 vmm_sz = HOST_HDR_OFFSET;
526
527 vmm_sz += tqe->buffer_size;
528
529 if (vmm_sz & 0x3)
530 vmm_sz = (vmm_sz + 4) & ~0x3;
531
532 if ((sum + vmm_sz) > WILC_TX_BUFF_SIZE)
533 break;
534
535 vmm_table[i] = vmm_sz / 4;
536 if (tqe->type == WILC_CFG_PKT)
537 vmm_table[i] |= BIT(10);
538 cpu_to_le32s(&vmm_table[i]);
539
540 i++;
541 sum += vmm_sz;
542 tqe = wilc_wlan_txq_get_next(wilc, tqe);
543 } else {
544 break;
545 }
546 } while (1);
547
548 if (i == 0)
549 goto out;
550 vmm_table[i] = 0x0;
551
552 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
553 counter = 0;
554 func = wilc->hif_func;
555 do {
556 ret = func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, ®);
557 if (!ret)
558 break;
559
560 if ((reg & 0x1) == 0)
561 break;
562
563 counter++;
564 if (counter > 200) {
565 counter = 0;
566 ret = func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, 0);
567 break;
568 }
569 } while (!wilc->quit);
570
571 if (!ret)
572 goto out_release_bus;
573
574 timeout = 200;
575 do {
576 ret = func->hif_block_tx(wilc,
577 WILC_VMM_TBL_RX_SHADOW_BASE,
578 (u8 *)vmm_table,
579 ((i + 1) * 4));
580 if (!ret)
581 break;
582
583 ret = func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x2);
584 if (!ret)
585 break;
586
587 do {
588 ret = func->hif_read_reg(wilc, WILC_HOST_VMM_CTL, ®);
589 if (!ret)
590 break;
591 if ((reg >> 2) & 0x1) {
592 entries = ((reg >> 3) & 0x3f);
593 break;
594 }
595 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
596 } while (--timeout);
597 if (timeout <= 0) {
598 ret = func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x0);
599 break;
600 }
601
602 if (!ret)
603 break;
604
605 if (entries == 0) {
606 ret = func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, ®);
607 if (!ret)
608 break;
609 reg &= ~BIT(0);
610 ret = func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, reg);
611 if (!ret)
612 break;
613 break;
614 }
615 break;
616 } while (1);
617
618 if (!ret)
619 goto out_release_bus;
620
621 if (entries == 0) {
622 ret = -ENOBUFS;
623 goto out_release_bus;
624 }
625
626 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
627
628 offset = 0;
629 i = 0;
630 do {
631 u32 header, buffer_offset;
632 char *bssid;
633
634 tqe = wilc_wlan_txq_remove_from_head(dev);
635 if (!tqe)
636 break;
637
638 vif = tqe->vif;
639 if (vmm_table[i] == 0)
640 break;
641
642 le32_to_cpus(&vmm_table[i]);
643 vmm_sz = (vmm_table[i] & 0x3ff);
644 vmm_sz *= 4;
645 header = (tqe->type << 31) |
646 (tqe->buffer_size << 15) |
647 vmm_sz;
648 if (tqe->type == WILC_MGMT_PKT)
649 header |= BIT(30);
650 else
651 header &= ~BIT(30);
652
653 cpu_to_le32s(&header);
654 memcpy(&txb[offset], &header, 4);
655 if (tqe->type == WILC_CFG_PKT) {
656 buffer_offset = ETH_CONFIG_PKT_HDR_OFFSET;
657 } else if (tqe->type == WILC_NET_PKT) {
658 bssid = tqe->vif->bssid;
659 buffer_offset = ETH_ETHERNET_HDR_OFFSET;
660 memcpy(&txb[offset + 8], bssid, 6);
661 } else {
662 buffer_offset = HOST_HDR_OFFSET;
663 }
664
665 memcpy(&txb[offset + buffer_offset],
666 tqe->buffer, tqe->buffer_size);
667 offset += vmm_sz;
668 i++;
669 tqe->status = 1;
670 if (tqe->tx_complete_func)
671 tqe->tx_complete_func(tqe->priv, tqe->status);
672 if (tqe->ack_idx != NOT_TCP_ACK &&
673 tqe->ack_idx < MAX_PENDING_ACKS)
674 vif->ack_filter.pending_acks[tqe->ack_idx].txqe = NULL;
675 kfree(tqe);
676 } while (--entries);
677
678 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
679
680 ret = func->hif_clear_int_ext(wilc, ENABLE_TX_VMM);
681 if (!ret)
682 goto out_release_bus;
683
684 ret = func->hif_block_tx_ext(wilc, 0, txb, offset);
685
686out_release_bus:
687 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
688
689out:
690 mutex_unlock(&wilc->txq_add_to_head_cs);
691
692 *txq_count = wilc->txq_entries;
693 return ret;
694}
695
696static void wilc_wlan_handle_rx_buff(struct wilc *wilc, u8 *buffer, int size)
697{
698 int offset = 0;
699 u32 header;
700 u32 pkt_len, pkt_offset, tp_len;
701 int is_cfg_packet;
702 u8 *buff_ptr;
703
704 do {
705 buff_ptr = buffer + offset;
706 memcpy(&header, buff_ptr, 4);
707 le32_to_cpus(&header);
708
709 is_cfg_packet = (header >> 31) & 0x1;
710 pkt_offset = (header >> 22) & 0x1ff;
711 tp_len = (header >> 11) & 0x7ff;
712 pkt_len = header & 0x7ff;
713
714 if (pkt_len == 0 || tp_len == 0)
715 break;
716
717 if (pkt_offset & IS_MANAGMEMENT) {
718 buff_ptr += HOST_HDR_OFFSET;
719 wilc_wfi_mgmt_rx(wilc, buff_ptr, pkt_len);
720 } else {
721 if (!is_cfg_packet) {
722 if (pkt_len > 0) {
723 wilc_frmw_to_host(wilc, buff_ptr,
724 pkt_len, pkt_offset);
725 }
726 } else {
727 struct wilc_cfg_rsp rsp;
728
729 buff_ptr += pkt_offset;
730
731 wilc_wlan_cfg_indicate_rx(wilc, buff_ptr,
732 pkt_len,
733 &rsp);
734 if (rsp.type == WILC_CFG_RSP) {
735 if (wilc->cfg_seq_no == rsp.seq_no)
736 complete(&wilc->cfg_event);
737 } else if (rsp.type == WILC_CFG_RSP_STATUS) {
738 wilc_mac_indicate(wilc);
739 }
740 }
741 }
742 offset += tp_len;
743 if (offset >= size)
744 break;
745 } while (1);
746}
747
748static void wilc_wlan_handle_rxq(struct wilc *wilc)
749{
750 int size;
751 u8 *buffer;
752 struct rxq_entry_t *rqe;
753
754 do {
755 if (wilc->quit) {
756 complete(&wilc->cfg_event);
757 break;
758 }
759 rqe = wilc_wlan_rxq_remove(wilc);
760 if (!rqe)
761 break;
762
763 buffer = rqe->buffer;
764 size = rqe->buffer_size;
765 wilc_wlan_handle_rx_buff(wilc, buffer, size);
766
767 kfree(rqe);
768 } while (1);
769}
770
771static void wilc_unknown_isr_ext(struct wilc *wilc)
772{
773 wilc->hif_func->hif_clear_int_ext(wilc, 0);
774}
775
776static void wilc_pllupdate_isr_ext(struct wilc *wilc, u32 int_stats)
777{
778 int trials = 10;
779
780 wilc->hif_func->hif_clear_int_ext(wilc, PLL_INT_CLR);
781
782 if (wilc->io_type == WILC_HIF_SDIO)
783 mdelay(WILC_PLL_TO_SDIO);
784 else
785 mdelay(WILC_PLL_TO_SPI);
786
787 while (!(is_wilc1000(wilc_get_chipid(wilc, true)) && --trials))
788 mdelay(1);
789}
790
791static void wilc_sleeptimer_isr_ext(struct wilc *wilc, u32 int_stats1)
792{
793 wilc->hif_func->hif_clear_int_ext(wilc, SLEEP_INT_CLR);
794}
795
796static void wilc_wlan_handle_isr_ext(struct wilc *wilc, u32 int_status)
797{
798 u32 offset = wilc->rx_buffer_offset;
799 u8 *buffer = NULL;
800 u32 size;
801 u32 retries = 0;
802 int ret = 0;
803 struct rxq_entry_t *rqe;
804
805 size = (int_status & 0x7fff) << 2;
806
807 while (!size && retries < 10) {
808 wilc->hif_func->hif_read_size(wilc, &size);
809 size = (size & 0x7fff) << 2;
810 retries++;
811 }
812
813 if (size <= 0)
814 return;
815
816 if (WILC_RX_BUFF_SIZE - offset < size)
817 offset = 0;
818
819 buffer = &wilc->rx_buffer[offset];
820
821 wilc->hif_func->hif_clear_int_ext(wilc, DATA_INT_CLR | ENABLE_RX_VMM);
822 ret = wilc->hif_func->hif_block_rx_ext(wilc, 0, buffer, size);
823 if (!ret)
824 return;
825
826 offset += size;
827 wilc->rx_buffer_offset = offset;
828 rqe = kmalloc(sizeof(*rqe), GFP_KERNEL);
829 if (!rqe)
830 return;
831
832 rqe->buffer = buffer;
833 rqe->buffer_size = size;
834 wilc_wlan_rxq_add(wilc, rqe);
835 wilc_wlan_handle_rxq(wilc);
836}
837
838void wilc_handle_isr(struct wilc *wilc)
839{
840 u32 int_status;
841
842 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
843 wilc->hif_func->hif_read_int(wilc, &int_status);
844
845 if (int_status & PLL_INT_EXT)
846 wilc_pllupdate_isr_ext(wilc, int_status);
847
848 if (int_status & DATA_INT_EXT)
849 wilc_wlan_handle_isr_ext(wilc, int_status);
850
851 if (int_status & SLEEP_INT_EXT)
852 wilc_sleeptimer_isr_ext(wilc, int_status);
853
854 if (!(int_status & (ALL_INT_EXT)))
855 wilc_unknown_isr_ext(wilc);
856
857 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
858}
859EXPORT_SYMBOL_GPL(wilc_handle_isr);
860
861int wilc_wlan_firmware_download(struct wilc *wilc, const u8 *buffer,
862 u32 buffer_size)
863{
864 u32 offset;
865 u32 addr, size, size2, blksz;
866 u8 *dma_buffer;
867 int ret = 0;
868
869 blksz = BIT(12);
870
871 dma_buffer = kmalloc(blksz, GFP_KERNEL);
872 if (!dma_buffer)
873 return -EIO;
874
875 offset = 0;
876 do {
877 memcpy(&addr, &buffer[offset], 4);
878 memcpy(&size, &buffer[offset + 4], 4);
879 le32_to_cpus(&addr);
880 le32_to_cpus(&size);
881 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
882 offset += 8;
883 while (((int)size) && (offset < buffer_size)) {
884 if (size <= blksz)
885 size2 = size;
886 else
887 size2 = blksz;
888
889 memcpy(dma_buffer, &buffer[offset], size2);
890 ret = wilc->hif_func->hif_block_tx(wilc, addr,
891 dma_buffer, size2);
892 if (!ret)
893 break;
894
895 addr += size2;
896 offset += size2;
897 size -= size2;
898 }
899 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
900
901 if (!ret) {
902 ret = -EIO;
903 goto fail;
904 }
905 } while (offset < buffer_size);
906
907fail:
908
909 kfree(dma_buffer);
910
911 return (ret < 0) ? ret : 0;
912}
913
914int wilc_wlan_start(struct wilc *wilc)
915{
916 u32 reg = 0;
917 int ret;
918 u32 chipid;
919
920 if (wilc->io_type == WILC_HIF_SDIO) {
921 reg = 0;
922 reg |= BIT(3);
923 } else if (wilc->io_type == WILC_HIF_SPI) {
924 reg = 1;
925 }
926 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
927 ret = wilc->hif_func->hif_write_reg(wilc, WILC_VMM_CORE_CFG, reg);
928 if (!ret) {
929 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
930 return -EIO;
931 }
932 reg = 0;
933 if (wilc->io_type == WILC_HIF_SDIO && wilc->dev_irq_num)
934 reg |= WILC_HAVE_SDIO_IRQ_GPIO;
935
936#ifdef WILC_DISABLE_PMU
937#else
938 reg |= WILC_HAVE_USE_PMU;
939#endif
940
941#ifdef WILC_SLEEP_CLK_SRC_XO
942 reg |= WILC_HAVE_SLEEP_CLK_SRC_XO;
943#elif defined WILC_SLEEP_CLK_SRC_RTC
944 reg |= WILC_HAVE_SLEEP_CLK_SRC_RTC;
945#endif
946
947#ifdef WILC_EXT_PA_INV_TX_RX
948 reg |= WILC_HAVE_EXT_PA_INV_TX_RX;
949#endif
950 reg |= WILC_HAVE_USE_IRQ_AS_HOST_WAKE;
951 reg |= WILC_HAVE_LEGACY_RF_SETTINGS;
952#ifdef XTAL_24
953 reg |= WILC_HAVE_XTAL_24;
954#endif
955#ifdef DISABLE_WILC_UART
956 reg |= WILC_HAVE_DISABLE_WILC_UART;
957#endif
958
959 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_1, reg);
960 if (!ret) {
961 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
962 return -EIO;
963 }
964
965 wilc->hif_func->hif_sync_ext(wilc, NUM_INT_EXT);
966
967 ret = wilc->hif_func->hif_read_reg(wilc, 0x1000, &chipid);
968 if (!ret) {
969 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
970 return -EIO;
971 }
972
973 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®);
974 if ((reg & BIT(10)) == BIT(10)) {
975 reg &= ~BIT(10);
976 wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
977 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®);
978 }
979
980 reg |= BIT(10);
981 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
982 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®);
983 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
984
985 return (ret < 0) ? ret : 0;
986}
987
988int wilc_wlan_stop(struct wilc *wilc)
989{
990 u32 reg = 0;
991 int ret;
992 u8 timeout = 10;
993
994 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
995
996 ret = wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®);
997 if (!ret) {
998 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
999 return ret;
1000 }
1001
1002 reg &= ~BIT(10);
1003 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1004 if (!ret) {
1005 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
1006 return ret;
1007 }
1008
1009 do {
1010 ret = wilc->hif_func->hif_read_reg(wilc,
1011 WILC_GLB_RESET_0, ®);
1012 if (!ret) {
1013 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
1014 return ret;
1015 }
1016
1017 if ((reg & BIT(10))) {
1018 reg &= ~BIT(10);
1019 ret = wilc->hif_func->hif_write_reg(wilc,
1020 WILC_GLB_RESET_0,
1021 reg);
1022 timeout--;
1023 } else {
1024 ret = wilc->hif_func->hif_read_reg(wilc,
1025 WILC_GLB_RESET_0,
1026 ®);
1027 if (!ret) {
1028 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
1029 return ret;
1030 }
1031 break;
1032 }
1033
1034 } while (timeout);
1035 reg = (BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(8) | BIT(9) | BIT(26) |
1036 BIT(29) | BIT(30) | BIT(31));
1037
1038 wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1039 reg = (u32)~BIT(10);
1040
1041 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1042
1043 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
1044
1045 return ret;
1046}
1047
1048void wilc_wlan_cleanup(struct net_device *dev)
1049{
1050 struct txq_entry_t *tqe;
1051 struct rxq_entry_t *rqe;
1052 u32 reg = 0;
1053 int ret;
1054 struct wilc_vif *vif = netdev_priv(dev);
1055 struct wilc *wilc = vif->wilc;
1056
1057 wilc->quit = 1;
1058 do {
1059 tqe = wilc_wlan_txq_remove_from_head(dev);
1060 if (!tqe)
1061 break;
1062 if (tqe->tx_complete_func)
1063 tqe->tx_complete_func(tqe->priv, 0);
1064 kfree(tqe);
1065 } while (1);
1066
1067 do {
1068 rqe = wilc_wlan_rxq_remove(wilc);
1069 if (!rqe)
1070 break;
1071 kfree(rqe);
1072 } while (1);
1073
1074 kfree(wilc->rx_buffer);
1075 wilc->rx_buffer = NULL;
1076 kfree(wilc->tx_buffer);
1077 wilc->tx_buffer = NULL;
1078
1079 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
1080
1081 ret = wilc->hif_func->hif_read_reg(wilc, WILC_GP_REG_0, ®);
1082 if (!ret) {
1083 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
1084 return;
1085 }
1086
1087 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_0,
1088 (reg | ABORT_INT));
1089 if (!ret) {
1090 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
1091 return;
1092 }
1093
1094 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
1095 wilc->hif_func->hif_deinit(NULL);
1096}
1097
1098static int wilc_wlan_cfg_commit(struct wilc_vif *vif, int type,
1099 u32 drv_handler)
1100{
1101 struct wilc *wilc = vif->wilc;
1102 struct wilc_cfg_frame *cfg = &wilc->cfg_frame;
1103 int t_len = wilc->cfg_frame_offset + sizeof(struct wilc_cfg_cmd_hdr);
1104
1105 if (type == WILC_CFG_SET)
1106 cfg->hdr.cmd_type = 'W';
1107 else
1108 cfg->hdr.cmd_type = 'Q';
1109
1110 cfg->hdr.seq_no = wilc->cfg_seq_no % 256;
1111 cfg->hdr.total_len = cpu_to_le16(t_len);
1112 cfg->hdr.driver_handler = cpu_to_le32(drv_handler);
1113 wilc->cfg_seq_no = cfg->hdr.seq_no;
1114
1115 if (!wilc_wlan_txq_add_cfg_pkt(vif, (u8 *)&cfg->hdr, t_len))
1116 return -1;
1117
1118 return 0;
1119}
1120
1121int wilc_wlan_cfg_set(struct wilc_vif *vif, int start, u16 wid, u8 *buffer,
1122 u32 buffer_size, int commit, u32 drv_handler)
1123{
1124 u32 offset;
1125 int ret_size;
1126 struct wilc *wilc = vif->wilc;
1127
1128 mutex_lock(&wilc->cfg_cmd_lock);
1129
1130 if (start)
1131 wilc->cfg_frame_offset = 0;
1132
1133 offset = wilc->cfg_frame_offset;
1134 ret_size = wilc_wlan_cfg_set_wid(wilc->cfg_frame.frame, offset,
1135 wid, buffer, buffer_size);
1136 offset += ret_size;
1137 wilc->cfg_frame_offset = offset;
1138
1139 if (!commit) {
1140 mutex_unlock(&wilc->cfg_cmd_lock);
1141 return ret_size;
1142 }
1143
1144 netdev_dbg(vif->ndev, "%s: seqno[%d]\n", __func__, wilc->cfg_seq_no);
1145
1146 if (wilc_wlan_cfg_commit(vif, WILC_CFG_SET, drv_handler))
1147 ret_size = 0;
1148
1149 if (!wait_for_completion_timeout(&wilc->cfg_event,
1150 WILC_CFG_PKTS_TIMEOUT)) {
1151 netdev_dbg(vif->ndev, "%s: Timed Out\n", __func__);
1152 ret_size = 0;
1153 }
1154
1155 wilc->cfg_frame_offset = 0;
1156 wilc->cfg_seq_no += 1;
1157 mutex_unlock(&wilc->cfg_cmd_lock);
1158
1159 return ret_size;
1160}
1161
1162int wilc_wlan_cfg_get(struct wilc_vif *vif, int start, u16 wid, int commit,
1163 u32 drv_handler)
1164{
1165 u32 offset;
1166 int ret_size;
1167 struct wilc *wilc = vif->wilc;
1168
1169 mutex_lock(&wilc->cfg_cmd_lock);
1170
1171 if (start)
1172 wilc->cfg_frame_offset = 0;
1173
1174 offset = wilc->cfg_frame_offset;
1175 ret_size = wilc_wlan_cfg_get_wid(wilc->cfg_frame.frame, offset, wid);
1176 offset += ret_size;
1177 wilc->cfg_frame_offset = offset;
1178
1179 if (!commit) {
1180 mutex_unlock(&wilc->cfg_cmd_lock);
1181 return ret_size;
1182 }
1183
1184 if (wilc_wlan_cfg_commit(vif, WILC_CFG_QUERY, drv_handler))
1185 ret_size = 0;
1186
1187 if (!wait_for_completion_timeout(&wilc->cfg_event,
1188 WILC_CFG_PKTS_TIMEOUT)) {
1189 netdev_dbg(vif->ndev, "%s: Timed Out\n", __func__);
1190 ret_size = 0;
1191 }
1192 wilc->cfg_frame_offset = 0;
1193 wilc->cfg_seq_no += 1;
1194 mutex_unlock(&wilc->cfg_cmd_lock);
1195
1196 return ret_size;
1197}
1198
1199int wilc_wlan_cfg_get_val(struct wilc *wl, u16 wid, u8 *buffer, u32 buffer_size)
1200{
1201 return wilc_wlan_cfg_get_wid_value(wl, wid, buffer, buffer_size);
1202}
1203
1204int wilc_send_config_pkt(struct wilc_vif *vif, u8 mode, struct wid *wids,
1205 u32 count)
1206{
1207 int i;
1208 int ret = 0;
1209 u32 drv = wilc_get_vif_idx(vif);
1210
1211 if (mode == WILC_GET_CFG) {
1212 for (i = 0; i < count; i++) {
1213 if (!wilc_wlan_cfg_get(vif, !i,
1214 wids[i].id,
1215 (i == count - 1),
1216 drv)) {
1217 ret = -ETIMEDOUT;
1218 break;
1219 }
1220 }
1221 for (i = 0; i < count; i++) {
1222 wids[i].size = wilc_wlan_cfg_get_val(vif->wilc,
1223 wids[i].id,
1224 wids[i].val,
1225 wids[i].size);
1226 }
1227 } else if (mode == WILC_SET_CFG) {
1228 for (i = 0; i < count; i++) {
1229 if (!wilc_wlan_cfg_set(vif, !i,
1230 wids[i].id,
1231 wids[i].val,
1232 wids[i].size,
1233 (i == count - 1),
1234 drv)) {
1235 ret = -ETIMEDOUT;
1236 break;
1237 }
1238 }
1239 }
1240
1241 return ret;
1242}
1243
1244static u32 init_chip(struct net_device *dev)
1245{
1246 u32 chipid;
1247 u32 reg, ret = 0;
1248 struct wilc_vif *vif = netdev_priv(dev);
1249 struct wilc *wilc = vif->wilc;
1250
1251 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
1252
1253 chipid = wilc_get_chipid(wilc, true);
1254
1255 if ((chipid & 0xfff) != 0xa0) {
1256 ret = wilc->hif_func->hif_read_reg(wilc, 0x1118, ®);
1257 if (!ret) {
1258 netdev_err(dev, "fail read reg 0x1118\n");
1259 goto release;
1260 }
1261 reg |= BIT(0);
1262 ret = wilc->hif_func->hif_write_reg(wilc, 0x1118, reg);
1263 if (!ret) {
1264 netdev_err(dev, "fail write reg 0x1118\n");
1265 goto release;
1266 }
1267 ret = wilc->hif_func->hif_write_reg(wilc, 0xc0000, 0x71);
1268 if (!ret) {
1269 netdev_err(dev, "fail write reg 0xc0000\n");
1270 goto release;
1271 }
1272 }
1273
1274release:
1275 release_bus(wilc, WILC_BUS_RELEASE_ONLY);
1276
1277 return ret;
1278}
1279
1280u32 wilc_get_chipid(struct wilc *wilc, bool update)
1281{
1282 static u32 chipid;
1283 u32 tempchipid = 0;
1284 u32 rfrevid = 0;
1285
1286 if (chipid == 0 || update) {
1287 wilc->hif_func->hif_read_reg(wilc, 0x1000, &tempchipid);
1288 wilc->hif_func->hif_read_reg(wilc, 0x13f4, &rfrevid);
1289 if (!is_wilc1000(tempchipid)) {
1290 chipid = 0;
1291 return chipid;
1292 }
1293 if (tempchipid == 0x1002a0) {
1294 if (rfrevid != 0x1)
1295 tempchipid = 0x1002a1;
1296 } else if (tempchipid == 0x1002b0) {
1297 if (rfrevid == 0x4)
1298 tempchipid = 0x1002b1;
1299 else if (rfrevid != 0x3)
1300 tempchipid = 0x1002b2;
1301 }
1302
1303 chipid = tempchipid;
1304 }
1305 return chipid;
1306}
1307
1308int wilc_wlan_init(struct net_device *dev)
1309{
1310 int ret = 0;
1311 struct wilc_vif *vif = netdev_priv(dev);
1312 struct wilc *wilc;
1313
1314 wilc = vif->wilc;
1315
1316 wilc->quit = 0;
1317
1318 if (!wilc->hif_func->hif_init(wilc, false)) {
1319 ret = -EIO;
1320 goto fail;
1321 }
1322
1323 if (!wilc->tx_buffer)
1324 wilc->tx_buffer = kmalloc(WILC_TX_BUFF_SIZE, GFP_KERNEL);
1325
1326 if (!wilc->tx_buffer) {
1327 ret = -ENOBUFS;
1328 goto fail;
1329 }
1330
1331 if (!wilc->rx_buffer)
1332 wilc->rx_buffer = kmalloc(WILC_RX_BUFF_SIZE, GFP_KERNEL);
1333
1334 if (!wilc->rx_buffer) {
1335 ret = -ENOBUFS;
1336 goto fail;
1337 }
1338
1339 if (!init_chip(dev)) {
1340 ret = -EIO;
1341 goto fail;
1342 }
1343
1344 return 1;
1345
1346fail:
1347
1348 kfree(wilc->rx_buffer);
1349 wilc->rx_buffer = NULL;
1350 kfree(wilc->tx_buffer);
1351 wilc->tx_buffer = NULL;
1352
1353 return ret;
1354}
1355
