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21#include <linux/types.h>
22#include <linux/netdevice.h>
23
24#include <brcmu_utils.h>
25#include <brcmu_wifi.h>
26
27#include "core.h"
28#include "debug.h"
29#include "proto.h"
30#include "msgbuf.h"
31#include "commonring.h"
32#include "flowring.h"
33#include "bus.h"
34#include "tracepoint.h"
35
36
37#define MSGBUF_IOCTL_RESP_TIMEOUT 2000
38
39#define MSGBUF_TYPE_GEN_STATUS 0x1
40#define MSGBUF_TYPE_RING_STATUS 0x2
41#define MSGBUF_TYPE_FLOW_RING_CREATE 0x3
42#define MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT 0x4
43#define MSGBUF_TYPE_FLOW_RING_DELETE 0x5
44#define MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT 0x6
45#define MSGBUF_TYPE_FLOW_RING_FLUSH 0x7
46#define MSGBUF_TYPE_FLOW_RING_FLUSH_CMPLT 0x8
47#define MSGBUF_TYPE_IOCTLPTR_REQ 0x9
48#define MSGBUF_TYPE_IOCTLPTR_REQ_ACK 0xA
49#define MSGBUF_TYPE_IOCTLRESP_BUF_POST 0xB
50#define MSGBUF_TYPE_IOCTL_CMPLT 0xC
51#define MSGBUF_TYPE_EVENT_BUF_POST 0xD
52#define MSGBUF_TYPE_WL_EVENT 0xE
53#define MSGBUF_TYPE_TX_POST 0xF
54#define MSGBUF_TYPE_TX_STATUS 0x10
55#define MSGBUF_TYPE_RXBUF_POST 0x11
56#define MSGBUF_TYPE_RX_CMPLT 0x12
57#define MSGBUF_TYPE_LPBK_DMAXFER 0x13
58#define MSGBUF_TYPE_LPBK_DMAXFER_CMPLT 0x14
59
60#define NR_TX_PKTIDS 2048
61#define NR_RX_PKTIDS 1024
62
63#define BRCMF_IOCTL_REQ_PKTID 0xFFFE
64
65#define BRCMF_MSGBUF_MAX_PKT_SIZE 2048
66#define BRCMF_MSGBUF_RXBUFPOST_THRESHOLD 32
67#define BRCMF_MSGBUF_MAX_IOCTLRESPBUF_POST 8
68#define BRCMF_MSGBUF_MAX_EVENTBUF_POST 8
69
70#define BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_3 0x01
71#define BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT 5
72
73#define BRCMF_MSGBUF_TX_FLUSH_CNT1 32
74#define BRCMF_MSGBUF_TX_FLUSH_CNT2 96
75
76#define BRCMF_MSGBUF_DELAY_TXWORKER_THRS 96
77#define BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS 32
78#define BRCMF_MSGBUF_UPDATE_RX_PTR_THRS 48
79
80
81struct msgbuf_common_hdr {
82 u8 msgtype;
83 u8 ifidx;
84 u8 flags;
85 u8 rsvd0;
86 __le32 request_id;
87};
88
89struct msgbuf_buf_addr {
90 __le32 low_addr;
91 __le32 high_addr;
92};
93
94struct msgbuf_ioctl_req_hdr {
95 struct msgbuf_common_hdr msg;
96 __le32 cmd;
97 __le16 trans_id;
98 __le16 input_buf_len;
99 __le16 output_buf_len;
100 __le16 rsvd0[3];
101 struct msgbuf_buf_addr req_buf_addr;
102 __le32 rsvd1[2];
103};
104
105struct msgbuf_tx_msghdr {
106 struct msgbuf_common_hdr msg;
107 u8 txhdr[ETH_HLEN];
108 u8 flags;
109 u8 seg_cnt;
110 struct msgbuf_buf_addr metadata_buf_addr;
111 struct msgbuf_buf_addr data_buf_addr;
112 __le16 metadata_buf_len;
113 __le16 data_len;
114 __le32 rsvd0;
115};
116
117struct msgbuf_rx_bufpost {
118 struct msgbuf_common_hdr msg;
119 __le16 metadata_buf_len;
120 __le16 data_buf_len;
121 __le32 rsvd0;
122 struct msgbuf_buf_addr metadata_buf_addr;
123 struct msgbuf_buf_addr data_buf_addr;
124};
125
126struct msgbuf_rx_ioctl_resp_or_event {
127 struct msgbuf_common_hdr msg;
128 __le16 host_buf_len;
129 __le16 rsvd0[3];
130 struct msgbuf_buf_addr host_buf_addr;
131 __le32 rsvd1[4];
132};
133
134struct msgbuf_completion_hdr {
135 __le16 status;
136 __le16 flow_ring_id;
137};
138
139struct msgbuf_rx_event {
140 struct msgbuf_common_hdr msg;
141 struct msgbuf_completion_hdr compl_hdr;
142 __le16 event_data_len;
143 __le16 seqnum;
144 __le16 rsvd0[4];
145};
146
147struct msgbuf_ioctl_resp_hdr {
148 struct msgbuf_common_hdr msg;
149 struct msgbuf_completion_hdr compl_hdr;
150 __le16 resp_len;
151 __le16 trans_id;
152 __le32 cmd;
153 __le32 rsvd0;
154};
155
156struct msgbuf_tx_status {
157 struct msgbuf_common_hdr msg;
158 struct msgbuf_completion_hdr compl_hdr;
159 __le16 metadata_len;
160 __le16 tx_status;
161};
162
163struct msgbuf_rx_complete {
164 struct msgbuf_common_hdr msg;
165 struct msgbuf_completion_hdr compl_hdr;
166 __le16 metadata_len;
167 __le16 data_len;
168 __le16 data_offset;
169 __le16 flags;
170 __le32 rx_status_0;
171 __le32 rx_status_1;
172 __le32 rsvd0;
173};
174
175struct msgbuf_tx_flowring_create_req {
176 struct msgbuf_common_hdr msg;
177 u8 da[ETH_ALEN];
178 u8 sa[ETH_ALEN];
179 u8 tid;
180 u8 if_flags;
181 __le16 flow_ring_id;
182 u8 tc;
183 u8 priority;
184 __le16 int_vector;
185 __le16 max_items;
186 __le16 len_item;
187 struct msgbuf_buf_addr flow_ring_addr;
188};
189
190struct msgbuf_tx_flowring_delete_req {
191 struct msgbuf_common_hdr msg;
192 __le16 flow_ring_id;
193 __le16 reason;
194 __le32 rsvd0[7];
195};
196
197struct msgbuf_flowring_create_resp {
198 struct msgbuf_common_hdr msg;
199 struct msgbuf_completion_hdr compl_hdr;
200 __le32 rsvd0[3];
201};
202
203struct msgbuf_flowring_delete_resp {
204 struct msgbuf_common_hdr msg;
205 struct msgbuf_completion_hdr compl_hdr;
206 __le32 rsvd0[3];
207};
208
209struct msgbuf_flowring_flush_resp {
210 struct msgbuf_common_hdr msg;
211 struct msgbuf_completion_hdr compl_hdr;
212 __le32 rsvd0[3];
213};
214
215struct brcmf_msgbuf_work_item {
216 struct list_head queue;
217 u32 flowid;
218 int ifidx;
219 u8 sa[ETH_ALEN];
220 u8 da[ETH_ALEN];
221};
222
223struct brcmf_msgbuf {
224 struct brcmf_pub *drvr;
225
226 struct brcmf_commonring **commonrings;
227 struct brcmf_commonring **flowrings;
228 dma_addr_t *flowring_dma_handle;
229 u16 nrof_flowrings;
230
231 u16 rx_dataoffset;
232 u32 max_rxbufpost;
233 u16 rx_metadata_offset;
234 u32 rxbufpost;
235
236 u32 max_ioctlrespbuf;
237 u32 cur_ioctlrespbuf;
238 u32 max_eventbuf;
239 u32 cur_eventbuf;
240
241 void *ioctbuf;
242 dma_addr_t ioctbuf_handle;
243 u32 ioctbuf_phys_hi;
244 u32 ioctbuf_phys_lo;
245 int ioctl_resp_status;
246 u32 ioctl_resp_ret_len;
247 u32 ioctl_resp_pktid;
248
249 u16 data_seq_no;
250 u16 ioctl_seq_no;
251 u32 reqid;
252 wait_queue_head_t ioctl_resp_wait;
253 bool ctl_completed;
254
255 struct brcmf_msgbuf_pktids *tx_pktids;
256 struct brcmf_msgbuf_pktids *rx_pktids;
257 struct brcmf_flowring *flow;
258
259 struct workqueue_struct *txflow_wq;
260 struct work_struct txflow_work;
261 unsigned long *flow_map;
262 unsigned long *txstatus_done_map;
263
264 struct work_struct flowring_work;
265 spinlock_t flowring_work_lock;
266 struct list_head work_queue;
267};
268
269struct brcmf_msgbuf_pktid {
270 atomic_t allocated;
271 u16 data_offset;
272 struct sk_buff *skb;
273 dma_addr_t physaddr;
274};
275
276struct brcmf_msgbuf_pktids {
277 u32 array_size;
278 u32 last_allocated_idx;
279 enum dma_data_direction direction;
280 struct brcmf_msgbuf_pktid *array;
281};
282
283static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf);
284
285
286static struct brcmf_msgbuf_pktids *
287brcmf_msgbuf_init_pktids(u32 nr_array_entries,
288 enum dma_data_direction direction)
289{
290 struct brcmf_msgbuf_pktid *array;
291 struct brcmf_msgbuf_pktids *pktids;
292
293 array = kcalloc(nr_array_entries, sizeof(*array), GFP_KERNEL);
294 if (!array)
295 return NULL;
296
297 pktids = kzalloc(sizeof(*pktids), GFP_KERNEL);
298 if (!pktids) {
299 kfree(array);
300 return NULL;
301 }
302 pktids->array = array;
303 pktids->array_size = nr_array_entries;
304
305 return pktids;
306}
307
308
309static int
310brcmf_msgbuf_alloc_pktid(struct device *dev,
311 struct brcmf_msgbuf_pktids *pktids,
312 struct sk_buff *skb, u16 data_offset,
313 dma_addr_t *physaddr, u32 *idx)
314{
315 struct brcmf_msgbuf_pktid *array;
316 u32 count;
317
318 array = pktids->array;
319
320 *physaddr = dma_map_single(dev, skb->data + data_offset,
321 skb->len - data_offset, pktids->direction);
322
323 if (dma_mapping_error(dev, *physaddr)) {
324 brcmf_err("dma_map_single failed !!\n");
325 return -ENOMEM;
326 }
327
328 *idx = pktids->last_allocated_idx;
329
330 count = 0;
331 do {
332 (*idx)++;
333 if (*idx == pktids->array_size)
334 *idx = 0;
335 if (array[*idx].allocated.counter == 0)
336 if (atomic_cmpxchg(&array[*idx].allocated, 0, 1) == 0)
337 break;
338 count++;
339 } while (count < pktids->array_size);
340
341 if (count == pktids->array_size)
342 return -ENOMEM;
343
344 array[*idx].data_offset = data_offset;
345 array[*idx].physaddr = *physaddr;
346 array[*idx].skb = skb;
347
348 pktids->last_allocated_idx = *idx;
349
350 return 0;
351}
352
353
354static struct sk_buff *
355brcmf_msgbuf_get_pktid(struct device *dev, struct brcmf_msgbuf_pktids *pktids,
356 u32 idx)
357{
358 struct brcmf_msgbuf_pktid *pktid;
359 struct sk_buff *skb;
360
361 if (idx >= pktids->array_size) {
362 brcmf_err("Invalid packet id %d (max %d)\n", idx,
363 pktids->array_size);
364 return NULL;
365 }
366 if (pktids->array[idx].allocated.counter) {
367 pktid = &pktids->array[idx];
368 dma_unmap_single(dev, pktid->physaddr,
369 pktid->skb->len - pktid->data_offset,
370 pktids->direction);
371 skb = pktid->skb;
372 pktid->allocated.counter = 0;
373 return skb;
374 } else {
375 brcmf_err("Invalid packet id %d (not in use)\n", idx);
376 }
377
378 return NULL;
379}
380
381
382static void
383brcmf_msgbuf_release_array(struct device *dev,
384 struct brcmf_msgbuf_pktids *pktids)
385{
386 struct brcmf_msgbuf_pktid *array;
387 struct brcmf_msgbuf_pktid *pktid;
388 u32 count;
389
390 array = pktids->array;
391 count = 0;
392 do {
393 if (array[count].allocated.counter) {
394 pktid = &array[count];
395 dma_unmap_single(dev, pktid->physaddr,
396 pktid->skb->len - pktid->data_offset,
397 pktids->direction);
398 brcmu_pkt_buf_free_skb(pktid->skb);
399 }
400 count++;
401 } while (count < pktids->array_size);
402
403 kfree(array);
404 kfree(pktids);
405}
406
407
408static void brcmf_msgbuf_release_pktids(struct brcmf_msgbuf *msgbuf)
409{
410 if (msgbuf->rx_pktids)
411 brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
412 msgbuf->rx_pktids);
413 if (msgbuf->tx_pktids)
414 brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
415 msgbuf->tx_pktids);
416}
417
418
419static int brcmf_msgbuf_tx_ioctl(struct brcmf_pub *drvr, int ifidx,
420 uint cmd, void *buf, uint len)
421{
422 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
423 struct brcmf_commonring *commonring;
424 struct msgbuf_ioctl_req_hdr *request;
425 u16 buf_len;
426 void *ret_ptr;
427 int err;
428
429 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
430 brcmf_commonring_lock(commonring);
431 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
432 if (!ret_ptr) {
433 brcmf_err("Failed to reserve space in commonring\n");
434 brcmf_commonring_unlock(commonring);
435 return -ENOMEM;
436 }
437
438 msgbuf->reqid++;
439
440 request = (struct msgbuf_ioctl_req_hdr *)ret_ptr;
441 request->msg.msgtype = MSGBUF_TYPE_IOCTLPTR_REQ;
442 request->msg.ifidx = (u8)ifidx;
443 request->msg.flags = 0;
444 request->msg.request_id = cpu_to_le32(BRCMF_IOCTL_REQ_PKTID);
445 request->cmd = cpu_to_le32(cmd);
446 request->output_buf_len = cpu_to_le16(len);
447 request->trans_id = cpu_to_le16(msgbuf->reqid);
448
449 buf_len = min_t(u16, len, BRCMF_TX_IOCTL_MAX_MSG_SIZE);
450 request->input_buf_len = cpu_to_le16(buf_len);
451 request->req_buf_addr.high_addr = cpu_to_le32(msgbuf->ioctbuf_phys_hi);
452 request->req_buf_addr.low_addr = cpu_to_le32(msgbuf->ioctbuf_phys_lo);
453 if (buf)
454 memcpy(msgbuf->ioctbuf, buf, buf_len);
455 else
456 memset(msgbuf->ioctbuf, 0, buf_len);
457
458 err = brcmf_commonring_write_complete(commonring);
459 brcmf_commonring_unlock(commonring);
460
461 return err;
462}
463
464
465static int brcmf_msgbuf_ioctl_resp_wait(struct brcmf_msgbuf *msgbuf)
466{
467 return wait_event_timeout(msgbuf->ioctl_resp_wait,
468 msgbuf->ctl_completed,
469 msecs_to_jiffies(MSGBUF_IOCTL_RESP_TIMEOUT));
470}
471
472
473static void brcmf_msgbuf_ioctl_resp_wake(struct brcmf_msgbuf *msgbuf)
474{
475 msgbuf->ctl_completed = true;
476 if (waitqueue_active(&msgbuf->ioctl_resp_wait))
477 wake_up(&msgbuf->ioctl_resp_wait);
478}
479
480
481static int brcmf_msgbuf_query_dcmd(struct brcmf_pub *drvr, int ifidx,
482 uint cmd, void *buf, uint len)
483{
484 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
485 struct sk_buff *skb = NULL;
486 int timeout;
487 int err;
488
489 brcmf_dbg(MSGBUF, "ifidx=%d, cmd=%d, len=%d\n", ifidx, cmd, len);
490 msgbuf->ctl_completed = false;
491 err = brcmf_msgbuf_tx_ioctl(drvr, ifidx, cmd, buf, len);
492 if (err)
493 return err;
494
495 timeout = brcmf_msgbuf_ioctl_resp_wait(msgbuf);
496 if (!timeout) {
497 brcmf_err("Timeout on response for query command\n");
498 return -EIO;
499 }
500
501 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
502 msgbuf->rx_pktids,
503 msgbuf->ioctl_resp_pktid);
504 if (msgbuf->ioctl_resp_ret_len != 0) {
505 if (!skb)
506 return -EBADF;
507
508 memcpy(buf, skb->data, (len < msgbuf->ioctl_resp_ret_len) ?
509 len : msgbuf->ioctl_resp_ret_len);
510 }
511 brcmu_pkt_buf_free_skb(skb);
512
513 return msgbuf->ioctl_resp_status;
514}
515
516
517static int brcmf_msgbuf_set_dcmd(struct brcmf_pub *drvr, int ifidx,
518 uint cmd, void *buf, uint len)
519{
520 return brcmf_msgbuf_query_dcmd(drvr, ifidx, cmd, buf, len);
521}
522
523
524static int brcmf_msgbuf_hdrpull(struct brcmf_pub *drvr, bool do_fws,
525 u8 *ifidx, struct sk_buff *skb)
526{
527 return -ENODEV;
528}
529
530
531static void
532brcmf_msgbuf_remove_flowring(struct brcmf_msgbuf *msgbuf, u16 flowid)
533{
534 u32 dma_sz;
535 void *dma_buf;
536
537 brcmf_dbg(MSGBUF, "Removing flowring %d\n", flowid);
538
539 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
540 dma_buf = msgbuf->flowrings[flowid]->buf_addr;
541 dma_free_coherent(msgbuf->drvr->bus_if->dev, dma_sz, dma_buf,
542 msgbuf->flowring_dma_handle[flowid]);
543
544 brcmf_flowring_delete(msgbuf->flow, flowid);
545}
546
547
548static struct brcmf_msgbuf_work_item *
549brcmf_msgbuf_dequeue_work(struct brcmf_msgbuf *msgbuf)
550{
551 struct brcmf_msgbuf_work_item *work = NULL;
552 ulong flags;
553
554 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
555 if (!list_empty(&msgbuf->work_queue)) {
556 work = list_first_entry(&msgbuf->work_queue,
557 struct brcmf_msgbuf_work_item, queue);
558 list_del(&work->queue);
559 }
560 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
561
562 return work;
563}
564
565
566static u32
567brcmf_msgbuf_flowring_create_worker(struct brcmf_msgbuf *msgbuf,
568 struct brcmf_msgbuf_work_item *work)
569{
570 struct msgbuf_tx_flowring_create_req *create;
571 struct brcmf_commonring *commonring;
572 void *ret_ptr;
573 u32 flowid;
574 void *dma_buf;
575 u32 dma_sz;
576 u64 address;
577 int err;
578
579 flowid = work->flowid;
580 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
581 dma_buf = dma_alloc_coherent(msgbuf->drvr->bus_if->dev, dma_sz,
582 &msgbuf->flowring_dma_handle[flowid],
583 GFP_KERNEL);
584 if (!dma_buf) {
585 brcmf_err("dma_alloc_coherent failed\n");
586 brcmf_flowring_delete(msgbuf->flow, flowid);
587 return BRCMF_FLOWRING_INVALID_ID;
588 }
589
590 brcmf_commonring_config(msgbuf->flowrings[flowid],
591 BRCMF_H2D_TXFLOWRING_MAX_ITEM,
592 BRCMF_H2D_TXFLOWRING_ITEMSIZE, dma_buf);
593
594 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
595 brcmf_commonring_lock(commonring);
596 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
597 if (!ret_ptr) {
598 brcmf_err("Failed to reserve space in commonring\n");
599 brcmf_commonring_unlock(commonring);
600 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
601 return BRCMF_FLOWRING_INVALID_ID;
602 }
603
604 create = (struct msgbuf_tx_flowring_create_req *)ret_ptr;
605 create->msg.msgtype = MSGBUF_TYPE_FLOW_RING_CREATE;
606 create->msg.ifidx = work->ifidx;
607 create->msg.request_id = 0;
608 create->tid = brcmf_flowring_tid(msgbuf->flow, flowid);
609 create->flow_ring_id = cpu_to_le16(flowid +
610 BRCMF_NROF_H2D_COMMON_MSGRINGS);
611 memcpy(create->sa, work->sa, ETH_ALEN);
612 memcpy(create->da, work->da, ETH_ALEN);
613 address = (u64)msgbuf->flowring_dma_handle[flowid];
614 create->flow_ring_addr.high_addr = cpu_to_le32(address >> 32);
615 create->flow_ring_addr.low_addr = cpu_to_le32(address & 0xffffffff);
616 create->max_items = cpu_to_le16(BRCMF_H2D_TXFLOWRING_MAX_ITEM);
617 create->len_item = cpu_to_le16(BRCMF_H2D_TXFLOWRING_ITEMSIZE);
618
619 brcmf_dbg(MSGBUF, "Send Flow Create Req flow ID %d for peer %pM prio %d ifindex %d\n",
620 flowid, work->da, create->tid, work->ifidx);
621
622 err = brcmf_commonring_write_complete(commonring);
623 brcmf_commonring_unlock(commonring);
624 if (err) {
625 brcmf_err("Failed to write commonring\n");
626 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
627 return BRCMF_FLOWRING_INVALID_ID;
628 }
629
630 return flowid;
631}
632
633
634static void brcmf_msgbuf_flowring_worker(struct work_struct *work)
635{
636 struct brcmf_msgbuf *msgbuf;
637 struct brcmf_msgbuf_work_item *create;
638
639 msgbuf = container_of(work, struct brcmf_msgbuf, flowring_work);
640
641 while ((create = brcmf_msgbuf_dequeue_work(msgbuf))) {
642 brcmf_msgbuf_flowring_create_worker(msgbuf, create);
643 kfree(create);
644 }
645}
646
647
648static u32 brcmf_msgbuf_flowring_create(struct brcmf_msgbuf *msgbuf, int ifidx,
649 struct sk_buff *skb)
650{
651 struct brcmf_msgbuf_work_item *create;
652 struct ethhdr *eh = (struct ethhdr *)(skb->data);
653 u32 flowid;
654 ulong flags;
655
656 create = kzalloc(sizeof(*create), GFP_ATOMIC);
657 if (create == NULL)
658 return BRCMF_FLOWRING_INVALID_ID;
659
660 flowid = brcmf_flowring_create(msgbuf->flow, eh->h_dest,
661 skb->priority, ifidx);
662 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
663 kfree(create);
664 return flowid;
665 }
666
667 create->flowid = flowid;
668 create->ifidx = ifidx;
669 memcpy(create->sa, eh->h_source, ETH_ALEN);
670 memcpy(create->da, eh->h_dest, ETH_ALEN);
671
672 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
673 list_add_tail(&create->queue, &msgbuf->work_queue);
674 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
675 schedule_work(&msgbuf->flowring_work);
676
677 return flowid;
678}
679
680
681static void brcmf_msgbuf_txflow(struct brcmf_msgbuf *msgbuf, u8 flowid)
682{
683 struct brcmf_flowring *flow = msgbuf->flow;
684 struct brcmf_commonring *commonring;
685 void *ret_ptr;
686 u32 count;
687 struct sk_buff *skb;
688 dma_addr_t physaddr;
689 u32 pktid;
690 struct msgbuf_tx_msghdr *tx_msghdr;
691 u64 address;
692
693 commonring = msgbuf->flowrings[flowid];
694 if (!brcmf_commonring_write_available(commonring))
695 return;
696
697 brcmf_commonring_lock(commonring);
698
699 count = BRCMF_MSGBUF_TX_FLUSH_CNT2 - BRCMF_MSGBUF_TX_FLUSH_CNT1;
700 while (brcmf_flowring_qlen(flow, flowid)) {
701 skb = brcmf_flowring_dequeue(flow, flowid);
702 if (skb == NULL) {
703 brcmf_err("No SKB, but qlen %d\n",
704 brcmf_flowring_qlen(flow, flowid));
705 break;
706 }
707 skb_orphan(skb);
708 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
709 msgbuf->tx_pktids, skb, ETH_HLEN,
710 &physaddr, &pktid)) {
711 brcmf_flowring_reinsert(flow, flowid, skb);
712 brcmf_err("No PKTID available !!\n");
713 break;
714 }
715 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
716 if (!ret_ptr) {
717 brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
718 msgbuf->tx_pktids, pktid);
719 brcmf_flowring_reinsert(flow, flowid, skb);
720 break;
721 }
722 count++;
723
724 tx_msghdr = (struct msgbuf_tx_msghdr *)ret_ptr;
725
726 tx_msghdr->msg.msgtype = MSGBUF_TYPE_TX_POST;
727 tx_msghdr->msg.request_id = cpu_to_le32(pktid);
728 tx_msghdr->msg.ifidx = brcmf_flowring_ifidx_get(flow, flowid);
729 tx_msghdr->flags = BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_3;
730 tx_msghdr->flags |= (skb->priority & 0x07) <<
731 BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT;
732 tx_msghdr->seg_cnt = 1;
733 memcpy(tx_msghdr->txhdr, skb->data, ETH_HLEN);
734 tx_msghdr->data_len = cpu_to_le16(skb->len - ETH_HLEN);
735 address = (u64)physaddr;
736 tx_msghdr->data_buf_addr.high_addr = cpu_to_le32(address >> 32);
737 tx_msghdr->data_buf_addr.low_addr =
738 cpu_to_le32(address & 0xffffffff);
739 tx_msghdr->metadata_buf_len = 0;
740 tx_msghdr->metadata_buf_addr.high_addr = 0;
741 tx_msghdr->metadata_buf_addr.low_addr = 0;
742 atomic_inc(&commonring->outstanding_tx);
743 if (count >= BRCMF_MSGBUF_TX_FLUSH_CNT2) {
744 brcmf_commonring_write_complete(commonring);
745 count = 0;
746 }
747 }
748 if (count)
749 brcmf_commonring_write_complete(commonring);
750 brcmf_commonring_unlock(commonring);
751}
752
753
754static void brcmf_msgbuf_txflow_worker(struct work_struct *worker)
755{
756 struct brcmf_msgbuf *msgbuf;
757 u32 flowid;
758
759 msgbuf = container_of(worker, struct brcmf_msgbuf, txflow_work);
760 for_each_set_bit(flowid, msgbuf->flow_map, msgbuf->nrof_flowrings) {
761 clear_bit(flowid, msgbuf->flow_map);
762 brcmf_msgbuf_txflow(msgbuf, flowid);
763 }
764}
765
766
767static int brcmf_msgbuf_schedule_txdata(struct brcmf_msgbuf *msgbuf, u32 flowid,
768 bool force)
769{
770 struct brcmf_commonring *commonring;
771
772 set_bit(flowid, msgbuf->flow_map);
773 commonring = msgbuf->flowrings[flowid];
774 if ((force) || (atomic_read(&commonring->outstanding_tx) <
775 BRCMF_MSGBUF_DELAY_TXWORKER_THRS))
776 queue_work(msgbuf->txflow_wq, &msgbuf->txflow_work);
777
778 return 0;
779}
780
781
782static int brcmf_msgbuf_txdata(struct brcmf_pub *drvr, int ifidx,
783 u8 offset, struct sk_buff *skb)
784{
785 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
786 struct brcmf_flowring *flow = msgbuf->flow;
787 struct ethhdr *eh = (struct ethhdr *)(skb->data);
788 u32 flowid;
789 u32 queue_count;
790 bool force;
791
792 flowid = brcmf_flowring_lookup(flow, eh->h_dest, skb->priority, ifidx);
793 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
794 flowid = brcmf_msgbuf_flowring_create(msgbuf, ifidx, skb);
795 if (flowid == BRCMF_FLOWRING_INVALID_ID)
796 return -ENOMEM;
797 }
798 queue_count = brcmf_flowring_enqueue(flow, flowid, skb);
799 force = ((queue_count % BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) == 0);
800 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, force);
801
802 return 0;
803}
804
805
806static void
807brcmf_msgbuf_configure_addr_mode(struct brcmf_pub *drvr, int ifidx,
808 enum proto_addr_mode addr_mode)
809{
810 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
811
812 brcmf_flowring_configure_addr_mode(msgbuf->flow, ifidx, addr_mode);
813}
814
815
816static void
817brcmf_msgbuf_delete_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
818{
819 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
820
821 brcmf_flowring_delete_peer(msgbuf->flow, ifidx, peer);
822}
823
824
825static void
826brcmf_msgbuf_add_tdls_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
827{
828 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
829
830 brcmf_flowring_add_tdls_peer(msgbuf->flow, ifidx, peer);
831}
832
833
834static void
835brcmf_msgbuf_process_ioctl_complete(struct brcmf_msgbuf *msgbuf, void *buf)
836{
837 struct msgbuf_ioctl_resp_hdr *ioctl_resp;
838
839 ioctl_resp = (struct msgbuf_ioctl_resp_hdr *)buf;
840
841 msgbuf->ioctl_resp_status =
842 (s16)le16_to_cpu(ioctl_resp->compl_hdr.status);
843 msgbuf->ioctl_resp_ret_len = le16_to_cpu(ioctl_resp->resp_len);
844 msgbuf->ioctl_resp_pktid = le32_to_cpu(ioctl_resp->msg.request_id);
845
846 brcmf_msgbuf_ioctl_resp_wake(msgbuf);
847
848 if (msgbuf->cur_ioctlrespbuf)
849 msgbuf->cur_ioctlrespbuf--;
850 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
851}
852
853
854static void
855brcmf_msgbuf_process_txstatus(struct brcmf_msgbuf *msgbuf, void *buf)
856{
857 struct brcmf_commonring *commonring;
858 struct msgbuf_tx_status *tx_status;
859 u32 idx;
860 struct sk_buff *skb;
861 u16 flowid;
862
863 tx_status = (struct msgbuf_tx_status *)buf;
864 idx = le32_to_cpu(tx_status->msg.request_id);
865 flowid = le16_to_cpu(tx_status->compl_hdr.flow_ring_id);
866 flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
867 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
868 msgbuf->tx_pktids, idx);
869 if (!skb)
870 return;
871
872 set_bit(flowid, msgbuf->txstatus_done_map);
873 commonring = msgbuf->flowrings[flowid];
874 atomic_dec(&commonring->outstanding_tx);
875
876 brcmf_txfinalize(msgbuf->drvr, skb, tx_status->msg.ifidx, true);
877}
878
879
880static u32 brcmf_msgbuf_rxbuf_data_post(struct brcmf_msgbuf *msgbuf, u32 count)
881{
882 struct brcmf_commonring *commonring;
883 void *ret_ptr;
884 struct sk_buff *skb;
885 u16 alloced;
886 u32 pktlen;
887 dma_addr_t physaddr;
888 struct msgbuf_rx_bufpost *rx_bufpost;
889 u64 address;
890 u32 pktid;
891 u32 i;
892
893 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
894 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
895 count,
896 &alloced);
897 if (!ret_ptr) {
898 brcmf_dbg(MSGBUF, "Failed to reserve space in commonring\n");
899 return 0;
900 }
901
902 for (i = 0; i < alloced; i++) {
903 rx_bufpost = (struct msgbuf_rx_bufpost *)ret_ptr;
904 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
905
906 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
907
908 if (skb == NULL) {
909 brcmf_err("Failed to alloc SKB\n");
910 brcmf_commonring_write_cancel(commonring, alloced - i);
911 break;
912 }
913
914 pktlen = skb->len;
915 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
916 msgbuf->rx_pktids, skb, 0,
917 &physaddr, &pktid)) {
918 dev_kfree_skb_any(skb);
919 brcmf_err("No PKTID available !!\n");
920 brcmf_commonring_write_cancel(commonring, alloced - i);
921 break;
922 }
923
924 if (msgbuf->rx_metadata_offset) {
925 address = (u64)physaddr;
926 rx_bufpost->metadata_buf_len =
927 cpu_to_le16(msgbuf->rx_metadata_offset);
928 rx_bufpost->metadata_buf_addr.high_addr =
929 cpu_to_le32(address >> 32);
930 rx_bufpost->metadata_buf_addr.low_addr =
931 cpu_to_le32(address & 0xffffffff);
932
933 skb_pull(skb, msgbuf->rx_metadata_offset);
934 pktlen = skb->len;
935 physaddr += msgbuf->rx_metadata_offset;
936 }
937 rx_bufpost->msg.msgtype = MSGBUF_TYPE_RXBUF_POST;
938 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
939
940 address = (u64)physaddr;
941 rx_bufpost->data_buf_len = cpu_to_le16((u16)pktlen);
942 rx_bufpost->data_buf_addr.high_addr =
943 cpu_to_le32(address >> 32);
944 rx_bufpost->data_buf_addr.low_addr =
945 cpu_to_le32(address & 0xffffffff);
946
947 ret_ptr += brcmf_commonring_len_item(commonring);
948 }
949
950 if (i)
951 brcmf_commonring_write_complete(commonring);
952
953 return i;
954}
955
956
957static void
958brcmf_msgbuf_rxbuf_data_fill(struct brcmf_msgbuf *msgbuf)
959{
960 u32 fillbufs;
961 u32 retcount;
962
963 fillbufs = msgbuf->max_rxbufpost - msgbuf->rxbufpost;
964
965 while (fillbufs) {
966 retcount = brcmf_msgbuf_rxbuf_data_post(msgbuf, fillbufs);
967 if (!retcount)
968 break;
969 msgbuf->rxbufpost += retcount;
970 fillbufs -= retcount;
971 }
972}
973
974
975static void
976brcmf_msgbuf_update_rxbufpost_count(struct brcmf_msgbuf *msgbuf, u16 rxcnt)
977{
978 msgbuf->rxbufpost -= rxcnt;
979 if (msgbuf->rxbufpost <= (msgbuf->max_rxbufpost -
980 BRCMF_MSGBUF_RXBUFPOST_THRESHOLD))
981 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
982}
983
984
985static u32
986brcmf_msgbuf_rxbuf_ctrl_post(struct brcmf_msgbuf *msgbuf, bool event_buf,
987 u32 count)
988{
989 struct brcmf_commonring *commonring;
990 void *ret_ptr;
991 struct sk_buff *skb;
992 u16 alloced;
993 u32 pktlen;
994 dma_addr_t physaddr;
995 struct msgbuf_rx_ioctl_resp_or_event *rx_bufpost;
996 u64 address;
997 u32 pktid;
998 u32 i;
999
1000 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1001 brcmf_commonring_lock(commonring);
1002 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
1003 count,
1004 &alloced);
1005 if (!ret_ptr) {
1006 brcmf_err("Failed to reserve space in commonring\n");
1007 brcmf_commonring_unlock(commonring);
1008 return 0;
1009 }
1010
1011 for (i = 0; i < alloced; i++) {
1012 rx_bufpost = (struct msgbuf_rx_ioctl_resp_or_event *)ret_ptr;
1013 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
1014
1015 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
1016
1017 if (skb == NULL) {
1018 brcmf_err("Failed to alloc SKB\n");
1019 brcmf_commonring_write_cancel(commonring, alloced - i);
1020 break;
1021 }
1022
1023 pktlen = skb->len;
1024 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
1025 msgbuf->rx_pktids, skb, 0,
1026 &physaddr, &pktid)) {
1027 dev_kfree_skb_any(skb);
1028 brcmf_err("No PKTID available !!\n");
1029 brcmf_commonring_write_cancel(commonring, alloced - i);
1030 break;
1031 }
1032 if (event_buf)
1033 rx_bufpost->msg.msgtype = MSGBUF_TYPE_EVENT_BUF_POST;
1034 else
1035 rx_bufpost->msg.msgtype =
1036 MSGBUF_TYPE_IOCTLRESP_BUF_POST;
1037 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
1038
1039 address = (u64)physaddr;
1040 rx_bufpost->host_buf_len = cpu_to_le16((u16)pktlen);
1041 rx_bufpost->host_buf_addr.high_addr =
1042 cpu_to_le32(address >> 32);
1043 rx_bufpost->host_buf_addr.low_addr =
1044 cpu_to_le32(address & 0xffffffff);
1045
1046 ret_ptr += brcmf_commonring_len_item(commonring);
1047 }
1048
1049 if (i)
1050 brcmf_commonring_write_complete(commonring);
1051
1052 brcmf_commonring_unlock(commonring);
1053
1054 return i;
1055}
1056
1057
1058static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf)
1059{
1060 u32 count;
1061
1062 count = msgbuf->max_ioctlrespbuf - msgbuf->cur_ioctlrespbuf;
1063 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, false, count);
1064 msgbuf->cur_ioctlrespbuf += count;
1065}
1066
1067
1068static void brcmf_msgbuf_rxbuf_event_post(struct brcmf_msgbuf *msgbuf)
1069{
1070 u32 count;
1071
1072 count = msgbuf->max_eventbuf - msgbuf->cur_eventbuf;
1073 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, true, count);
1074 msgbuf->cur_eventbuf += count;
1075}
1076
1077
1078static void
1079brcmf_msgbuf_rx_skb(struct brcmf_msgbuf *msgbuf, struct sk_buff *skb,
1080 u8 ifidx)
1081{
1082 struct brcmf_if *ifp;
1083
1084
1085
1086
1087
1088
1089
1090 if (ifidx)
1091 (ifidx)++;
1092 ifp = msgbuf->drvr->iflist[ifidx];
1093 if (!ifp || !ifp->ndev) {
1094 brcmf_err("Received pkt for invalid ifidx %d\n", ifidx);
1095 brcmu_pkt_buf_free_skb(skb);
1096 return;
1097 }
1098 brcmf_netif_rx(ifp, skb);
1099}
1100
1101
1102static void brcmf_msgbuf_process_event(struct brcmf_msgbuf *msgbuf, void *buf)
1103{
1104 struct msgbuf_rx_event *event;
1105 u32 idx;
1106 u16 buflen;
1107 struct sk_buff *skb;
1108
1109 event = (struct msgbuf_rx_event *)buf;
1110 idx = le32_to_cpu(event->msg.request_id);
1111 buflen = le16_to_cpu(event->event_data_len);
1112
1113 if (msgbuf->cur_eventbuf)
1114 msgbuf->cur_eventbuf--;
1115 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1116
1117 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1118 msgbuf->rx_pktids, idx);
1119 if (!skb)
1120 return;
1121
1122 if (msgbuf->rx_dataoffset)
1123 skb_pull(skb, msgbuf->rx_dataoffset);
1124
1125 skb_trim(skb, buflen);
1126
1127 brcmf_msgbuf_rx_skb(msgbuf, skb, event->msg.ifidx);
1128}
1129
1130
1131static void
1132brcmf_msgbuf_process_rx_complete(struct brcmf_msgbuf *msgbuf, void *buf)
1133{
1134 struct msgbuf_rx_complete *rx_complete;
1135 struct sk_buff *skb;
1136 u16 data_offset;
1137 u16 buflen;
1138 u32 idx;
1139
1140 brcmf_msgbuf_update_rxbufpost_count(msgbuf, 1);
1141
1142 rx_complete = (struct msgbuf_rx_complete *)buf;
1143 data_offset = le16_to_cpu(rx_complete->data_offset);
1144 buflen = le16_to_cpu(rx_complete->data_len);
1145 idx = le32_to_cpu(rx_complete->msg.request_id);
1146
1147 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1148 msgbuf->rx_pktids, idx);
1149 if (!skb)
1150 return;
1151
1152 if (data_offset)
1153 skb_pull(skb, data_offset);
1154 else if (msgbuf->rx_dataoffset)
1155 skb_pull(skb, msgbuf->rx_dataoffset);
1156
1157 skb_trim(skb, buflen);
1158
1159 brcmf_msgbuf_rx_skb(msgbuf, skb, rx_complete->msg.ifidx);
1160}
1161
1162
1163static void
1164brcmf_msgbuf_process_flow_ring_create_response(struct brcmf_msgbuf *msgbuf,
1165 void *buf)
1166{
1167 struct msgbuf_flowring_create_resp *flowring_create_resp;
1168 u16 status;
1169 u16 flowid;
1170
1171 flowring_create_resp = (struct msgbuf_flowring_create_resp *)buf;
1172
1173 flowid = le16_to_cpu(flowring_create_resp->compl_hdr.flow_ring_id);
1174 flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
1175 status = le16_to_cpu(flowring_create_resp->compl_hdr.status);
1176
1177 if (status) {
1178 brcmf_err("Flowring creation failed, code %d\n", status);
1179 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1180 return;
1181 }
1182 brcmf_dbg(MSGBUF, "Flowring %d Create response status %d\n", flowid,
1183 status);
1184
1185 brcmf_flowring_open(msgbuf->flow, flowid);
1186
1187 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
1188}
1189
1190
1191static void
1192brcmf_msgbuf_process_flow_ring_delete_response(struct brcmf_msgbuf *msgbuf,
1193 void *buf)
1194{
1195 struct msgbuf_flowring_delete_resp *flowring_delete_resp;
1196 u16 status;
1197 u16 flowid;
1198
1199 flowring_delete_resp = (struct msgbuf_flowring_delete_resp *)buf;
1200
1201 flowid = le16_to_cpu(flowring_delete_resp->compl_hdr.flow_ring_id);
1202 flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
1203 status = le16_to_cpu(flowring_delete_resp->compl_hdr.status);
1204
1205 if (status) {
1206 brcmf_err("Flowring deletion failed, code %d\n", status);
1207 brcmf_flowring_delete(msgbuf->flow, flowid);
1208 return;
1209 }
1210 brcmf_dbg(MSGBUF, "Flowring %d Delete response status %d\n", flowid,
1211 status);
1212
1213 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1214}
1215
1216
1217static void brcmf_msgbuf_process_msgtype(struct brcmf_msgbuf *msgbuf, void *buf)
1218{
1219 struct msgbuf_common_hdr *msg;
1220
1221 msg = (struct msgbuf_common_hdr *)buf;
1222 switch (msg->msgtype) {
1223 case MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT:
1224 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT\n");
1225 brcmf_msgbuf_process_flow_ring_create_response(msgbuf, buf);
1226 break;
1227 case MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT:
1228 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT\n");
1229 brcmf_msgbuf_process_flow_ring_delete_response(msgbuf, buf);
1230 break;
1231 case MSGBUF_TYPE_IOCTLPTR_REQ_ACK:
1232 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTLPTR_REQ_ACK\n");
1233 break;
1234 case MSGBUF_TYPE_IOCTL_CMPLT:
1235 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTL_CMPLT\n");
1236 brcmf_msgbuf_process_ioctl_complete(msgbuf, buf);
1237 break;
1238 case MSGBUF_TYPE_WL_EVENT:
1239 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_WL_EVENT\n");
1240 brcmf_msgbuf_process_event(msgbuf, buf);
1241 break;
1242 case MSGBUF_TYPE_TX_STATUS:
1243 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_TX_STATUS\n");
1244 brcmf_msgbuf_process_txstatus(msgbuf, buf);
1245 break;
1246 case MSGBUF_TYPE_RX_CMPLT:
1247 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_RX_CMPLT\n");
1248 brcmf_msgbuf_process_rx_complete(msgbuf, buf);
1249 break;
1250 default:
1251 brcmf_err("Unsupported msgtype %d\n", msg->msgtype);
1252 break;
1253 }
1254}
1255
1256
1257static void brcmf_msgbuf_process_rx(struct brcmf_msgbuf *msgbuf,
1258 struct brcmf_commonring *commonring)
1259{
1260 void *buf;
1261 u16 count;
1262 u16 processed;
1263
1264again:
1265 buf = brcmf_commonring_get_read_ptr(commonring, &count);
1266 if (buf == NULL)
1267 return;
1268
1269 processed = 0;
1270 while (count) {
1271 brcmf_msgbuf_process_msgtype(msgbuf,
1272 buf + msgbuf->rx_dataoffset);
1273 buf += brcmf_commonring_len_item(commonring);
1274 processed++;
1275 if (processed == BRCMF_MSGBUF_UPDATE_RX_PTR_THRS) {
1276 brcmf_commonring_read_complete(commonring, processed);
1277 processed = 0;
1278 }
1279 count--;
1280 }
1281 if (processed)
1282 brcmf_commonring_read_complete(commonring, processed);
1283
1284 if (commonring->r_ptr == 0)
1285 goto again;
1286}
1287
1288
1289int brcmf_proto_msgbuf_rx_trigger(struct device *dev)
1290{
1291 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1292 struct brcmf_pub *drvr = bus_if->drvr;
1293 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1294 struct brcmf_commonring *commonring;
1295 void *buf;
1296 u32 flowid;
1297 int qlen;
1298
1299 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
1300 brcmf_msgbuf_process_rx(msgbuf, buf);
1301 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
1302 brcmf_msgbuf_process_rx(msgbuf, buf);
1303 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
1304 brcmf_msgbuf_process_rx(msgbuf, buf);
1305
1306 for_each_set_bit(flowid, msgbuf->txstatus_done_map,
1307 msgbuf->nrof_flowrings) {
1308 clear_bit(flowid, msgbuf->txstatus_done_map);
1309 commonring = msgbuf->flowrings[flowid];
1310 qlen = brcmf_flowring_qlen(msgbuf->flow, flowid);
1311 if ((qlen > BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) ||
1312 ((qlen) && (atomic_read(&commonring->outstanding_tx) <
1313 BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS)))
1314 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
1315 }
1316
1317 return 0;
1318}
1319
1320
1321void brcmf_msgbuf_delete_flowring(struct brcmf_pub *drvr, u8 flowid)
1322{
1323 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1324 struct msgbuf_tx_flowring_delete_req *delete;
1325 struct brcmf_commonring *commonring;
1326 void *ret_ptr;
1327 u8 ifidx;
1328 int err;
1329
1330 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1331 brcmf_commonring_lock(commonring);
1332 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
1333 if (!ret_ptr) {
1334 brcmf_err("FW unaware, flowring will be removed !!\n");
1335 brcmf_commonring_unlock(commonring);
1336 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1337 return;
1338 }
1339
1340 delete = (struct msgbuf_tx_flowring_delete_req *)ret_ptr;
1341
1342 ifidx = brcmf_flowring_ifidx_get(msgbuf->flow, flowid);
1343
1344 delete->msg.msgtype = MSGBUF_TYPE_FLOW_RING_DELETE;
1345 delete->msg.ifidx = ifidx;
1346 delete->msg.request_id = 0;
1347
1348 delete->flow_ring_id = cpu_to_le16(flowid +
1349 BRCMF_NROF_H2D_COMMON_MSGRINGS);
1350 delete->reason = 0;
1351
1352 brcmf_dbg(MSGBUF, "Send Flow Delete Req flow ID %d, ifindex %d\n",
1353 flowid, ifidx);
1354
1355 err = brcmf_commonring_write_complete(commonring);
1356 brcmf_commonring_unlock(commonring);
1357 if (err) {
1358 brcmf_err("Failed to submit RING_DELETE, flowring will be removed\n");
1359 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1360 }
1361}
1362
1363#ifdef DEBUG
1364static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
1365{
1366 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
1367 struct brcmf_pub *drvr = bus_if->drvr;
1368 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1369 struct brcmf_commonring *commonring;
1370 u16 i;
1371 struct brcmf_flowring_ring *ring;
1372 struct brcmf_flowring_hash *hash;
1373
1374 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1375 seq_printf(seq, "h2d_ctl_submit: rp %4u, wp %4u, depth %4u\n",
1376 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1377 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
1378 seq_printf(seq, "h2d_rx_submit: rp %4u, wp %4u, depth %4u\n",
1379 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1380 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
1381 seq_printf(seq, "d2h_ctl_cmplt: rp %4u, wp %4u, depth %4u\n",
1382 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1383 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
1384 seq_printf(seq, "d2h_tx_cmplt: rp %4u, wp %4u, depth %4u\n",
1385 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1386 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
1387 seq_printf(seq, "d2h_rx_cmplt: rp %4u, wp %4u, depth %4u\n",
1388 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1389
1390 seq_printf(seq, "\nh2d_flowrings: depth %u\n",
1391 BRCMF_H2D_TXFLOWRING_MAX_ITEM);
1392 seq_puts(seq, "Active flowrings:\n");
1393 hash = msgbuf->flow->hash;
1394 for (i = 0; i < msgbuf->flow->nrofrings; i++) {
1395 if (!msgbuf->flow->rings[i])
1396 continue;
1397 ring = msgbuf->flow->rings[i];
1398 if (ring->status != RING_OPEN)
1399 continue;
1400 commonring = msgbuf->flowrings[i];
1401 hash = &msgbuf->flow->hash[ring->hash_id];
1402 seq_printf(seq, "id %3u: rp %4u, wp %4u, qlen %4u, blocked %u\n"
1403 " ifidx %u, fifo %u, da %pM\n",
1404 i, commonring->r_ptr, commonring->w_ptr,
1405 skb_queue_len(&ring->skblist), ring->blocked,
1406 hash->ifidx, hash->fifo, hash->mac);
1407 }
1408
1409 return 0;
1410}
1411#else
1412static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
1413{
1414 return 0;
1415}
1416#endif
1417
1418int brcmf_proto_msgbuf_attach(struct brcmf_pub *drvr)
1419{
1420 struct brcmf_bus_msgbuf *if_msgbuf;
1421 struct brcmf_msgbuf *msgbuf;
1422 u64 address;
1423 u32 count;
1424
1425 if_msgbuf = drvr->bus_if->msgbuf;
1426 msgbuf = kzalloc(sizeof(*msgbuf), GFP_KERNEL);
1427 if (!msgbuf)
1428 goto fail;
1429
1430 msgbuf->txflow_wq = create_singlethread_workqueue("msgbuf_txflow");
1431 if (msgbuf->txflow_wq == NULL) {
1432 brcmf_err("workqueue creation failed\n");
1433 goto fail;
1434 }
1435 INIT_WORK(&msgbuf->txflow_work, brcmf_msgbuf_txflow_worker);
1436 count = BITS_TO_LONGS(if_msgbuf->nrof_flowrings);
1437 count = count * sizeof(unsigned long);
1438 msgbuf->flow_map = kzalloc(count, GFP_KERNEL);
1439 if (!msgbuf->flow_map)
1440 goto fail;
1441
1442 msgbuf->txstatus_done_map = kzalloc(count, GFP_KERNEL);
1443 if (!msgbuf->txstatus_done_map)
1444 goto fail;
1445
1446 msgbuf->drvr = drvr;
1447 msgbuf->ioctbuf = dma_alloc_coherent(drvr->bus_if->dev,
1448 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1449 &msgbuf->ioctbuf_handle,
1450 GFP_KERNEL);
1451 if (!msgbuf->ioctbuf)
1452 goto fail;
1453 address = (u64)msgbuf->ioctbuf_handle;
1454 msgbuf->ioctbuf_phys_hi = address >> 32;
1455 msgbuf->ioctbuf_phys_lo = address & 0xffffffff;
1456
1457 drvr->proto->hdrpull = brcmf_msgbuf_hdrpull;
1458 drvr->proto->query_dcmd = brcmf_msgbuf_query_dcmd;
1459 drvr->proto->set_dcmd = brcmf_msgbuf_set_dcmd;
1460 drvr->proto->txdata = brcmf_msgbuf_txdata;
1461 drvr->proto->configure_addr_mode = brcmf_msgbuf_configure_addr_mode;
1462 drvr->proto->delete_peer = brcmf_msgbuf_delete_peer;
1463 drvr->proto->add_tdls_peer = brcmf_msgbuf_add_tdls_peer;
1464 drvr->proto->pd = msgbuf;
1465
1466 init_waitqueue_head(&msgbuf->ioctl_resp_wait);
1467
1468 msgbuf->commonrings =
1469 (struct brcmf_commonring **)if_msgbuf->commonrings;
1470 msgbuf->flowrings = (struct brcmf_commonring **)if_msgbuf->flowrings;
1471 msgbuf->nrof_flowrings = if_msgbuf->nrof_flowrings;
1472 msgbuf->flowring_dma_handle = kzalloc(msgbuf->nrof_flowrings *
1473 sizeof(*msgbuf->flowring_dma_handle), GFP_KERNEL);
1474 if (!msgbuf->flowring_dma_handle)
1475 goto fail;
1476
1477 msgbuf->rx_dataoffset = if_msgbuf->rx_dataoffset;
1478 msgbuf->max_rxbufpost = if_msgbuf->max_rxbufpost;
1479
1480 msgbuf->max_ioctlrespbuf = BRCMF_MSGBUF_MAX_IOCTLRESPBUF_POST;
1481 msgbuf->max_eventbuf = BRCMF_MSGBUF_MAX_EVENTBUF_POST;
1482
1483 msgbuf->tx_pktids = brcmf_msgbuf_init_pktids(NR_TX_PKTIDS,
1484 DMA_TO_DEVICE);
1485 if (!msgbuf->tx_pktids)
1486 goto fail;
1487 msgbuf->rx_pktids = brcmf_msgbuf_init_pktids(NR_RX_PKTIDS,
1488 DMA_FROM_DEVICE);
1489 if (!msgbuf->rx_pktids)
1490 goto fail;
1491
1492 msgbuf->flow = brcmf_flowring_attach(drvr->bus_if->dev,
1493 if_msgbuf->nrof_flowrings);
1494 if (!msgbuf->flow)
1495 goto fail;
1496
1497
1498 brcmf_dbg(MSGBUF, "Feeding buffers, rx data %d, rx event %d, rx ioctl resp %d\n",
1499 msgbuf->max_rxbufpost, msgbuf->max_eventbuf,
1500 msgbuf->max_ioctlrespbuf);
1501 count = 0;
1502 do {
1503 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
1504 if (msgbuf->max_rxbufpost != msgbuf->rxbufpost)
1505 msleep(10);
1506 else
1507 break;
1508 count++;
1509 } while (count < 10);
1510 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1511 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
1512
1513 INIT_WORK(&msgbuf->flowring_work, brcmf_msgbuf_flowring_worker);
1514 spin_lock_init(&msgbuf->flowring_work_lock);
1515 INIT_LIST_HEAD(&msgbuf->work_queue);
1516
1517 brcmf_debugfs_add_entry(drvr, "msgbuf_stats", brcmf_msgbuf_stats_read);
1518
1519 return 0;
1520
1521fail:
1522 if (msgbuf) {
1523 kfree(msgbuf->flow_map);
1524 kfree(msgbuf->txstatus_done_map);
1525 brcmf_msgbuf_release_pktids(msgbuf);
1526 kfree(msgbuf->flowring_dma_handle);
1527 if (msgbuf->ioctbuf)
1528 dma_free_coherent(drvr->bus_if->dev,
1529 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1530 msgbuf->ioctbuf,
1531 msgbuf->ioctbuf_handle);
1532 kfree(msgbuf);
1533 }
1534 return -ENOMEM;
1535}
1536
1537
1538void brcmf_proto_msgbuf_detach(struct brcmf_pub *drvr)
1539{
1540 struct brcmf_msgbuf *msgbuf;
1541 struct brcmf_msgbuf_work_item *work;
1542
1543 brcmf_dbg(TRACE, "Enter\n");
1544 if (drvr->proto->pd) {
1545 msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1546 cancel_work_sync(&msgbuf->flowring_work);
1547 while (!list_empty(&msgbuf->work_queue)) {
1548 work = list_first_entry(&msgbuf->work_queue,
1549 struct brcmf_msgbuf_work_item,
1550 queue);
1551 list_del(&work->queue);
1552 kfree(work);
1553 }
1554 kfree(msgbuf->flow_map);
1555 kfree(msgbuf->txstatus_done_map);
1556 if (msgbuf->txflow_wq)
1557 destroy_workqueue(msgbuf->txflow_wq);
1558
1559 brcmf_flowring_detach(msgbuf->flow);
1560 dma_free_coherent(drvr->bus_if->dev,
1561 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1562 msgbuf->ioctbuf, msgbuf->ioctbuf_handle);
1563 brcmf_msgbuf_release_pktids(msgbuf);
1564 kfree(msgbuf->flowring_dma_handle);
1565 kfree(msgbuf);
1566 drvr->proto->pd = NULL;
1567 }
1568}
1569
